mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-24 11:49:48 +00:00
97795ba6c3
Regression since 53f2ef2c4a.
Fixes ticket #5017.
Signed-off-by: Marton Balint <cus@passwd.hu>
3252 lines
122 KiB
C
3252 lines
122 KiB
C
/*
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* MXF demuxer.
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* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* References
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* SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
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* SMPTE 377M MXF File Format Specifications
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* SMPTE 378M Operational Pattern 1a
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* SMPTE 379M MXF Generic Container
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* SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
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* SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container
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* SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container
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*
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* Principle
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* Search for Track numbers which will identify essence element KLV packets.
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* Search for SourcePackage which define tracks which contains Track numbers.
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* Material Package contains tracks with reference to SourcePackage tracks.
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* Search for Descriptors (Picture, Sound) which contains codec info and parameters.
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* Assign Descriptors to correct Tracks.
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*
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* Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) then add MetaDataSet to MXFContext.
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* Metadata parsing resolves Strong References to objects.
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*
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* Simple demuxer, only OP1A supported and some files might not work at all.
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* Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1
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*/
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#include <inttypes.h>
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#include "libavutil/aes.h"
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#include "libavutil/avassert.h"
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#include "libavutil/mathematics.h"
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#include "libavcodec/bytestream.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/timecode.h"
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#include "avformat.h"
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#include "internal.h"
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#include "mxf.h"
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typedef enum {
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Header,
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BodyPartition,
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Footer
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} MXFPartitionType;
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typedef enum {
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OP1a = 1,
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OP1b,
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OP1c,
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OP2a,
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OP2b,
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OP2c,
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OP3a,
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OP3b,
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OP3c,
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OPAtom,
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OPSONYOpt, /* FATE sample, violates the spec in places */
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} MXFOP;
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typedef struct MXFPartition {
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int closed;
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int complete;
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MXFPartitionType type;
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uint64_t previous_partition;
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int index_sid;
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int body_sid;
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int64_t this_partition;
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int64_t essence_offset; ///< absolute offset of essence
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int64_t essence_length;
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int32_t kag_size;
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int64_t header_byte_count;
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int64_t index_byte_count;
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int pack_length;
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int64_t pack_ofs; ///< absolute offset of pack in file, including run-in
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} MXFPartition;
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typedef struct MXFCryptoContext {
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UID uid;
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enum MXFMetadataSetType type;
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UID source_container_ul;
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} MXFCryptoContext;
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typedef struct MXFStructuralComponent {
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UID uid;
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enum MXFMetadataSetType type;
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UID source_package_uid;
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UID data_definition_ul;
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int64_t duration;
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int64_t start_position;
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int source_track_id;
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} MXFStructuralComponent;
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typedef struct MXFSequence {
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UID uid;
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enum MXFMetadataSetType type;
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UID data_definition_ul;
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UID *structural_components_refs;
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int structural_components_count;
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int64_t duration;
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uint8_t origin;
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} MXFSequence;
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typedef struct MXFTrack {
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UID uid;
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enum MXFMetadataSetType type;
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int drop_frame;
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int start_frame;
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struct AVRational rate;
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AVTimecode tc;
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} MXFTimecodeComponent;
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typedef struct {
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UID uid;
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enum MXFMetadataSetType type;
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UID input_segment_ref;
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} MXFPulldownComponent;
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typedef struct {
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UID uid;
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enum MXFMetadataSetType type;
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UID *structural_components_refs;
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int structural_components_count;
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int64_t duration;
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} MXFEssenceGroup;
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typedef struct {
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UID uid;
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enum MXFMetadataSetType type;
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char *name;
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char *value;
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} MXFTaggedValue;
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typedef struct {
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UID uid;
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enum MXFMetadataSetType type;
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MXFSequence *sequence; /* mandatory, and only one */
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UID sequence_ref;
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int track_id;
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uint8_t track_number[4];
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AVRational edit_rate;
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int intra_only;
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uint64_t sample_count;
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int64_t original_duration; /* st->duration in SampleRate/EditRate units */
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} MXFTrack;
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typedef struct MXFDescriptor {
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UID uid;
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enum MXFMetadataSetType type;
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UID essence_container_ul;
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UID essence_codec_ul;
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UID codec_ul;
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AVRational sample_rate;
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AVRational aspect_ratio;
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int width;
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int height; /* Field height, not frame height */
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int frame_layout; /* See MXFFrameLayout enum */
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#define MXF_TFF 1
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#define MXF_BFF 2
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int field_dominance;
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int channels;
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int bits_per_sample;
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int64_t duration; /* ContainerDuration optional property */
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unsigned int component_depth;
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unsigned int horiz_subsampling;
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unsigned int vert_subsampling;
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UID *sub_descriptors_refs;
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int sub_descriptors_count;
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int linked_track_id;
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uint8_t *extradata;
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int extradata_size;
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enum AVPixelFormat pix_fmt;
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} MXFDescriptor;
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typedef struct MXFIndexTableSegment {
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UID uid;
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enum MXFMetadataSetType type;
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int edit_unit_byte_count;
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int index_sid;
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int body_sid;
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AVRational index_edit_rate;
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uint64_t index_start_position;
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uint64_t index_duration;
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int8_t *temporal_offset_entries;
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int *flag_entries;
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uint64_t *stream_offset_entries;
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int nb_index_entries;
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} MXFIndexTableSegment;
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typedef struct MXFPackage {
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UID uid;
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enum MXFMetadataSetType type;
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UID package_uid;
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UID package_ul;
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UID *tracks_refs;
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int tracks_count;
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MXFDescriptor *descriptor; /* only one */
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UID descriptor_ref;
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char *name;
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UID *comment_refs;
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int comment_count;
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} MXFPackage;
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typedef struct MXFMetadataSet {
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UID uid;
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enum MXFMetadataSetType type;
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} MXFMetadataSet;
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/* decoded index table */
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typedef struct MXFIndexTable {
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int index_sid;
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int body_sid;
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int nb_ptses; /* number of PTSes or total duration of index */
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int64_t first_dts; /* DTS = EditUnit + first_dts */
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int64_t *ptses; /* maps EditUnit -> PTS */
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int nb_segments;
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MXFIndexTableSegment **segments; /* sorted by IndexStartPosition */
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AVIndexEntry *fake_index; /* used for calling ff_index_search_timestamp() */
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int8_t *offsets; /* temporal offsets for display order to stored order conversion */
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} MXFIndexTable;
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typedef struct MXFContext {
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MXFPartition *partitions;
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unsigned partitions_count;
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MXFOP op;
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UID *packages_refs;
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int packages_count;
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MXFMetadataSet **metadata_sets;
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int metadata_sets_count;
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AVFormatContext *fc;
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struct AVAES *aesc;
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uint8_t *local_tags;
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int local_tags_count;
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uint64_t footer_partition;
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KLVPacket current_klv_data;
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int current_klv_index;
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int run_in;
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MXFPartition *current_partition;
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int parsing_backward;
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int64_t last_forward_tell;
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int last_forward_partition;
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int current_edit_unit;
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int nb_index_tables;
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MXFIndexTable *index_tables;
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int edit_units_per_packet; ///< how many edit units to read at a time (PCM, OPAtom)
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} MXFContext;
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enum MXFWrappingScheme {
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Frame,
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Clip,
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};
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/* NOTE: klv_offset is not set (-1) for local keys */
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typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset);
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typedef struct MXFMetadataReadTableEntry {
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const UID key;
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MXFMetadataReadFunc *read;
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int ctx_size;
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enum MXFMetadataSetType type;
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} MXFMetadataReadTableEntry;
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static int mxf_read_close(AVFormatContext *s);
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/* partial keys to match */
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static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 };
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static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 };
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static const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 };
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static const uint8_t mxf_system_item_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 };
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static const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 };
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/* complete keys to match */
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static const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 };
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static const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 };
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static const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 };
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static const uint8_t mxf_random_index_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
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static const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 };
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static const uint8_t mxf_avid_project_name[] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf };
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static const uint8_t mxf_jp2k_rsiz[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 };
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static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
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static const uint8_t mxf_indirect_value_utf16be[] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
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#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
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static void mxf_free_metadataset(MXFMetadataSet **ctx, int freectx)
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{
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MXFIndexTableSegment *seg;
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switch ((*ctx)->type) {
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case Descriptor:
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av_freep(&((MXFDescriptor *)*ctx)->extradata);
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break;
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case MultipleDescriptor:
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av_freep(&((MXFDescriptor *)*ctx)->sub_descriptors_refs);
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break;
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case Sequence:
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av_freep(&((MXFSequence *)*ctx)->structural_components_refs);
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break;
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case EssenceGroup:
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av_freep(&((MXFEssenceGroup *)*ctx)->structural_components_refs);
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break;
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case SourcePackage:
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case MaterialPackage:
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av_freep(&((MXFPackage *)*ctx)->tracks_refs);
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av_freep(&((MXFPackage *)*ctx)->name);
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av_freep(&((MXFPackage *)*ctx)->comment_refs);
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break;
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case TaggedValue:
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av_freep(&((MXFTaggedValue *)*ctx)->name);
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av_freep(&((MXFTaggedValue *)*ctx)->value);
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break;
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case IndexTableSegment:
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seg = (MXFIndexTableSegment *)*ctx;
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av_freep(&seg->temporal_offset_entries);
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av_freep(&seg->flag_entries);
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av_freep(&seg->stream_offset_entries);
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default:
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break;
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}
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if (freectx)
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av_freep(ctx);
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}
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static int64_t klv_decode_ber_length(AVIOContext *pb)
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{
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uint64_t size = avio_r8(pb);
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if (size & 0x80) { /* long form */
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int bytes_num = size & 0x7f;
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/* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
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if (bytes_num > 8)
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return AVERROR_INVALIDDATA;
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size = 0;
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while (bytes_num--)
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size = size << 8 | avio_r8(pb);
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}
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return size;
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}
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static int mxf_read_sync(AVIOContext *pb, const uint8_t *key, unsigned size)
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{
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int i, b;
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for (i = 0; i < size && !avio_feof(pb); i++) {
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b = avio_r8(pb);
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if (b == key[0])
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i = 0;
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else if (b != key[i])
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i = -1;
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}
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return i == size;
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}
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static int klv_read_packet(KLVPacket *klv, AVIOContext *pb)
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{
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if (!mxf_read_sync(pb, mxf_klv_key, 4))
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return AVERROR_INVALIDDATA;
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klv->offset = avio_tell(pb) - 4;
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memcpy(klv->key, mxf_klv_key, 4);
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avio_read(pb, klv->key + 4, 12);
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klv->length = klv_decode_ber_length(pb);
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return klv->length == -1 ? -1 : 0;
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}
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static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
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{
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int i;
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for (i = 0; i < s->nb_streams; i++) {
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MXFTrack *track = s->streams[i]->priv_data;
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/* SMPTE 379M 7.3 */
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if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number)))
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return i;
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}
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/* return 0 if only one stream, for OP Atom files with 0 as track number */
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return s->nb_streams == 1 ? 0 : -1;
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}
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/* XXX: use AVBitStreamFilter */
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static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
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{
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const uint8_t *buf_ptr, *end_ptr;
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uint8_t *data_ptr;
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int i;
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if (length > 61444) /* worst case PAL 1920 samples 8 channels */
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return AVERROR_INVALIDDATA;
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length = av_get_packet(pb, pkt, length);
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if (length < 0)
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return length;
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data_ptr = pkt->data;
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end_ptr = pkt->data + length;
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buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */
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for (; end_ptr - buf_ptr >= st->codec->channels * 4; ) {
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for (i = 0; i < st->codec->channels; i++) {
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uint32_t sample = bytestream_get_le32(&buf_ptr);
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if (st->codec->bits_per_coded_sample == 24)
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bytestream_put_le24(&data_ptr, (sample >> 4) & 0xffffff);
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else
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bytestream_put_le16(&data_ptr, (sample >> 12) & 0xffff);
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}
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buf_ptr += 32 - st->codec->channels*4; // always 8 channels stored SMPTE 331M
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}
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av_shrink_packet(pkt, data_ptr - pkt->data);
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return 0;
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}
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static int mxf_decrypt_triplet(AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
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{
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static const uint8_t checkv[16] = {0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b, 0x43, 0x48, 0x55, 0x4b};
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MXFContext *mxf = s->priv_data;
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AVIOContext *pb = s->pb;
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int64_t end = avio_tell(pb) + klv->length;
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int64_t size;
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uint64_t orig_size;
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uint64_t plaintext_size;
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uint8_t ivec[16];
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uint8_t tmpbuf[16];
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int index;
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if (!mxf->aesc && s->key && s->keylen == 16) {
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mxf->aesc = av_aes_alloc();
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if (!mxf->aesc)
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return AVERROR(ENOMEM);
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av_aes_init(mxf->aesc, s->key, 128, 1);
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}
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|
// crypto context
|
|
avio_skip(pb, klv_decode_ber_length(pb));
|
|
// plaintext offset
|
|
klv_decode_ber_length(pb);
|
|
plaintext_size = avio_rb64(pb);
|
|
// source klv key
|
|
klv_decode_ber_length(pb);
|
|
avio_read(pb, klv->key, 16);
|
|
if (!IS_KLV_KEY(klv, mxf_essence_element_key))
|
|
return AVERROR_INVALIDDATA;
|
|
index = mxf_get_stream_index(s, klv);
|
|
if (index < 0)
|
|
return AVERROR_INVALIDDATA;
|
|
// source size
|
|
klv_decode_ber_length(pb);
|
|
orig_size = avio_rb64(pb);
|
|
if (orig_size < plaintext_size)
|
|
return AVERROR_INVALIDDATA;
|
|
// enc. code
|
|
size = klv_decode_ber_length(pb);
|
|
if (size < 32 || size - 32 < orig_size)
|
|
return AVERROR_INVALIDDATA;
|
|
avio_read(pb, ivec, 16);
|
|
avio_read(pb, tmpbuf, 16);
|
|
if (mxf->aesc)
|
|
av_aes_crypt(mxf->aesc, tmpbuf, tmpbuf, 1, ivec, 1);
|
|
if (memcmp(tmpbuf, checkv, 16))
|
|
av_log(s, AV_LOG_ERROR, "probably incorrect decryption key\n");
|
|
size -= 32;
|
|
size = av_get_packet(pb, pkt, size);
|
|
if (size < 0)
|
|
return size;
|
|
else if (size < plaintext_size)
|
|
return AVERROR_INVALIDDATA;
|
|
size -= plaintext_size;
|
|
if (mxf->aesc)
|
|
av_aes_crypt(mxf->aesc, &pkt->data[plaintext_size],
|
|
&pkt->data[plaintext_size], size >> 4, ivec, 1);
|
|
av_shrink_packet(pkt, orig_size);
|
|
pkt->stream_index = index;
|
|
avio_skip(pb, end - avio_tell(pb));
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_primer_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFContext *mxf = arg;
|
|
int item_num = avio_rb32(pb);
|
|
int item_len = avio_rb32(pb);
|
|
|
|
if (item_len != 18) {
|
|
avpriv_request_sample(pb, "Primer pack item length %d", item_len);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
if (item_num > 65536) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "item_num %d is too large\n", item_num);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (mxf->local_tags)
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple primer packs\n");
|
|
av_free(mxf->local_tags);
|
|
mxf->local_tags_count = 0;
|
|
mxf->local_tags = av_calloc(item_num, item_len);
|
|
if (!mxf->local_tags)
|
|
return AVERROR(ENOMEM);
|
|
mxf->local_tags_count = item_num;
|
|
avio_read(pb, mxf->local_tags, item_num*item_len);
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_partition_pack(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFContext *mxf = arg;
|
|
MXFPartition *partition, *tmp_part;
|
|
UID op;
|
|
uint64_t footer_partition;
|
|
uint32_t nb_essence_containers;
|
|
|
|
tmp_part = av_realloc_array(mxf->partitions, mxf->partitions_count + 1, sizeof(*mxf->partitions));
|
|
if (!tmp_part)
|
|
return AVERROR(ENOMEM);
|
|
mxf->partitions = tmp_part;
|
|
|
|
if (mxf->parsing_backward) {
|
|
/* insert the new partition pack in the middle
|
|
* this makes the entries in mxf->partitions sorted by offset */
|
|
memmove(&mxf->partitions[mxf->last_forward_partition+1],
|
|
&mxf->partitions[mxf->last_forward_partition],
|
|
(mxf->partitions_count - mxf->last_forward_partition)*sizeof(*mxf->partitions));
|
|
partition = mxf->current_partition = &mxf->partitions[mxf->last_forward_partition];
|
|
} else {
|
|
mxf->last_forward_partition++;
|
|
partition = mxf->current_partition = &mxf->partitions[mxf->partitions_count];
|
|
}
|
|
|
|
memset(partition, 0, sizeof(*partition));
|
|
mxf->partitions_count++;
|
|
partition->pack_length = avio_tell(pb) - klv_offset + size;
|
|
partition->pack_ofs = klv_offset;
|
|
|
|
switch(uid[13]) {
|
|
case 2:
|
|
partition->type = Header;
|
|
break;
|
|
case 3:
|
|
partition->type = BodyPartition;
|
|
break;
|
|
case 4:
|
|
partition->type = Footer;
|
|
break;
|
|
default:
|
|
av_log(mxf->fc, AV_LOG_ERROR, "unknown partition type %i\n", uid[13]);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* consider both footers to be closed (there is only Footer and CompleteFooter) */
|
|
partition->closed = partition->type == Footer || !(uid[14] & 1);
|
|
partition->complete = uid[14] > 2;
|
|
avio_skip(pb, 4);
|
|
partition->kag_size = avio_rb32(pb);
|
|
partition->this_partition = avio_rb64(pb);
|
|
partition->previous_partition = avio_rb64(pb);
|
|
footer_partition = avio_rb64(pb);
|
|
partition->header_byte_count = avio_rb64(pb);
|
|
partition->index_byte_count = avio_rb64(pb);
|
|
partition->index_sid = avio_rb32(pb);
|
|
avio_skip(pb, 8);
|
|
partition->body_sid = avio_rb32(pb);
|
|
if (avio_read(pb, op, sizeof(UID)) != sizeof(UID)) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "Failed reading UID\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
nb_essence_containers = avio_rb32(pb);
|
|
|
|
if (partition->this_partition &&
|
|
partition->previous_partition == partition->this_partition) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"PreviousPartition equal to ThisPartition %"PRIx64"\n",
|
|
partition->previous_partition);
|
|
/* override with the actual previous partition offset */
|
|
if (!mxf->parsing_backward && mxf->last_forward_partition > 1) {
|
|
MXFPartition *prev =
|
|
mxf->partitions + mxf->last_forward_partition - 2;
|
|
partition->previous_partition = prev->this_partition;
|
|
}
|
|
/* if no previous body partition are found point to the header
|
|
* partition */
|
|
if (partition->previous_partition == partition->this_partition)
|
|
partition->previous_partition = 0;
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"Overriding PreviousPartition with %"PRIx64"\n",
|
|
partition->previous_partition);
|
|
}
|
|
|
|
/* some files don'thave FooterPartition set in every partition */
|
|
if (footer_partition) {
|
|
if (mxf->footer_partition && mxf->footer_partition != footer_partition) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"inconsistent FooterPartition value: %"PRIu64" != %"PRIu64"\n",
|
|
mxf->footer_partition, footer_partition);
|
|
} else {
|
|
mxf->footer_partition = footer_partition;
|
|
}
|
|
}
|
|
|
|
av_log(mxf->fc, AV_LOG_TRACE,
|
|
"PartitionPack: ThisPartition = 0x%"PRIX64
|
|
", PreviousPartition = 0x%"PRIX64", "
|
|
"FooterPartition = 0x%"PRIX64", IndexSID = %i, BodySID = %i\n",
|
|
partition->this_partition,
|
|
partition->previous_partition, footer_partition,
|
|
partition->index_sid, partition->body_sid);
|
|
|
|
/* sanity check PreviousPartition if set */
|
|
//NOTE: this isn't actually enough, see mxf_seek_to_previous_partition()
|
|
if (partition->previous_partition &&
|
|
mxf->run_in + partition->previous_partition >= klv_offset) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"PreviousPartition points to this partition or forward\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (op[12] == 1 && op[13] == 1) mxf->op = OP1a;
|
|
else if (op[12] == 1 && op[13] == 2) mxf->op = OP1b;
|
|
else if (op[12] == 1 && op[13] == 3) mxf->op = OP1c;
|
|
else if (op[12] == 2 && op[13] == 1) mxf->op = OP2a;
|
|
else if (op[12] == 2 && op[13] == 2) mxf->op = OP2b;
|
|
else if (op[12] == 2 && op[13] == 3) mxf->op = OP2c;
|
|
else if (op[12] == 3 && op[13] == 1) mxf->op = OP3a;
|
|
else if (op[12] == 3 && op[13] == 2) mxf->op = OP3b;
|
|
else if (op[12] == 3 && op[13] == 3) mxf->op = OP3c;
|
|
else if (op[12] == 64&& op[13] == 1) mxf->op = OPSONYOpt;
|
|
else if (op[12] == 0x10) {
|
|
/* SMPTE 390m: "There shall be exactly one essence container"
|
|
* The following block deals with files that violate this, namely:
|
|
* 2011_DCPTEST_24FPS.V.mxf - two ECs, OP1a
|
|
* abcdefghiv016f56415e.mxf - zero ECs, OPAtom, output by Avid AirSpeed */
|
|
if (nb_essence_containers != 1) {
|
|
MXFOP op = nb_essence_containers ? OP1a : OPAtom;
|
|
|
|
/* only nag once */
|
|
if (!mxf->op)
|
|
av_log(mxf->fc, AV_LOG_WARNING,
|
|
"\"OPAtom\" with %"PRIu32" ECs - assuming %s\n",
|
|
nb_essence_containers,
|
|
op == OP1a ? "OP1a" : "OPAtom");
|
|
|
|
mxf->op = op;
|
|
} else
|
|
mxf->op = OPAtom;
|
|
} else {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "unknown operational pattern: %02xh %02xh - guessing OP1a\n", op[12], op[13]);
|
|
mxf->op = OP1a;
|
|
}
|
|
|
|
if (partition->kag_size <= 0 || partition->kag_size > (1 << 20)) {
|
|
av_log(mxf->fc, AV_LOG_WARNING, "invalid KAGSize %"PRId32" - guessing ",
|
|
partition->kag_size);
|
|
|
|
if (mxf->op == OPSONYOpt)
|
|
partition->kag_size = 512;
|
|
else
|
|
partition->kag_size = 1;
|
|
|
|
av_log(mxf->fc, AV_LOG_WARNING, "%"PRId32"\n", partition->kag_size);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_add_metadata_set(MXFContext *mxf, void *metadata_set)
|
|
{
|
|
MXFMetadataSet **tmp;
|
|
|
|
tmp = av_realloc_array(mxf->metadata_sets, mxf->metadata_sets_count + 1, sizeof(*mxf->metadata_sets));
|
|
if (!tmp)
|
|
return AVERROR(ENOMEM);
|
|
mxf->metadata_sets = tmp;
|
|
mxf->metadata_sets[mxf->metadata_sets_count] = metadata_set;
|
|
mxf->metadata_sets_count++;
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_cryptographic_context(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFCryptoContext *cryptocontext = arg;
|
|
if (size != 16)
|
|
return AVERROR_INVALIDDATA;
|
|
if (IS_KLV_KEY(uid, mxf_crypto_source_container_ul))
|
|
avio_read(pb, cryptocontext->source_container_ul, 16);
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_strong_ref_array(AVIOContext *pb, UID **refs, int *count)
|
|
{
|
|
*count = avio_rb32(pb);
|
|
*refs = av_calloc(*count, sizeof(UID));
|
|
if (!*refs) {
|
|
*count = 0;
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
avio_skip(pb, 4); /* useless size of objects, always 16 according to specs */
|
|
avio_read(pb, (uint8_t *)*refs, *count * sizeof(UID));
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_content_storage(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFContext *mxf = arg;
|
|
switch (tag) {
|
|
case 0x1901:
|
|
if (mxf->packages_refs)
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "Multiple packages_refs\n");
|
|
av_free(mxf->packages_refs);
|
|
return mxf_read_strong_ref_array(pb, &mxf->packages_refs, &mxf->packages_count);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_source_clip(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFStructuralComponent *source_clip = arg;
|
|
switch(tag) {
|
|
case 0x0202:
|
|
source_clip->duration = avio_rb64(pb);
|
|
break;
|
|
case 0x1201:
|
|
source_clip->start_position = avio_rb64(pb);
|
|
break;
|
|
case 0x1101:
|
|
/* UMID, only get last 16 bytes */
|
|
avio_skip(pb, 16);
|
|
avio_read(pb, source_clip->source_package_uid, 16);
|
|
break;
|
|
case 0x1102:
|
|
source_clip->source_track_id = avio_rb32(pb);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_timecode_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFTimecodeComponent *mxf_timecode = arg;
|
|
switch(tag) {
|
|
case 0x1501:
|
|
mxf_timecode->start_frame = avio_rb64(pb);
|
|
break;
|
|
case 0x1502:
|
|
mxf_timecode->rate = (AVRational){avio_rb16(pb), 1};
|
|
break;
|
|
case 0x1503:
|
|
mxf_timecode->drop_frame = avio_r8(pb);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_pulldown_component(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFPulldownComponent *mxf_pulldown = arg;
|
|
switch(tag) {
|
|
case 0x0d01:
|
|
avio_read(pb, mxf_pulldown->input_segment_ref, 16);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_track(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFTrack *track = arg;
|
|
switch(tag) {
|
|
case 0x4801:
|
|
track->track_id = avio_rb32(pb);
|
|
break;
|
|
case 0x4804:
|
|
avio_read(pb, track->track_number, 4);
|
|
break;
|
|
case 0x4b01:
|
|
track->edit_rate.num = avio_rb32(pb);
|
|
track->edit_rate.den = avio_rb32(pb);
|
|
break;
|
|
case 0x4803:
|
|
avio_read(pb, track->sequence_ref, 16);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_sequence(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFSequence *sequence = arg;
|
|
switch(tag) {
|
|
case 0x0202:
|
|
sequence->duration = avio_rb64(pb);
|
|
break;
|
|
case 0x0201:
|
|
avio_read(pb, sequence->data_definition_ul, 16);
|
|
break;
|
|
case 0x4b02:
|
|
sequence->origin = avio_r8(pb);
|
|
break;
|
|
case 0x1001:
|
|
return mxf_read_strong_ref_array(pb, &sequence->structural_components_refs,
|
|
&sequence->structural_components_count);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_essence_group(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFEssenceGroup *essence_group = arg;
|
|
switch (tag) {
|
|
case 0x0202:
|
|
essence_group->duration = avio_rb64(pb);
|
|
break;
|
|
case 0x0501:
|
|
return mxf_read_strong_ref_array(pb, &essence_group->structural_components_refs,
|
|
&essence_group->structural_components_count);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int mxf_read_utf16_string(AVIOContext *pb, int size, char** str, int be)
|
|
{
|
|
int ret;
|
|
size_t buf_size;
|
|
|
|
if (size < 0)
|
|
return AVERROR(EINVAL);
|
|
|
|
buf_size = size + size / 2 + 1;
|
|
*str = av_malloc(buf_size);
|
|
if (!*str)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if (be)
|
|
ret = avio_get_str16be(pb, size, *str, buf_size);
|
|
else
|
|
ret = avio_get_str16le(pb, size, *str, buf_size);
|
|
|
|
if (ret < 0) {
|
|
av_freep(str);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define READ_STR16(type, big_endian) \
|
|
static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \
|
|
{ \
|
|
return mxf_read_utf16_string(pb, size, str, big_endian); \
|
|
}
|
|
READ_STR16(be, 1)
|
|
READ_STR16(le, 0)
|
|
#undef READ_STR16
|
|
|
|
static int mxf_read_package(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFPackage *package = arg;
|
|
switch(tag) {
|
|
case 0x4403:
|
|
return mxf_read_strong_ref_array(pb, &package->tracks_refs,
|
|
&package->tracks_count);
|
|
case 0x4401:
|
|
/* UMID */
|
|
avio_read(pb, package->package_ul, 16);
|
|
avio_read(pb, package->package_uid, 16);
|
|
break;
|
|
case 0x4701:
|
|
avio_read(pb, package->descriptor_ref, 16);
|
|
break;
|
|
case 0x4402:
|
|
return mxf_read_utf16be_string(pb, size, &package->name);
|
|
case 0x4406:
|
|
return mxf_read_strong_ref_array(pb, &package->comment_refs,
|
|
&package->comment_count);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_index_entry_array(AVIOContext *pb, MXFIndexTableSegment *segment)
|
|
{
|
|
int i, length;
|
|
|
|
segment->nb_index_entries = avio_rb32(pb);
|
|
|
|
length = avio_rb32(pb);
|
|
|
|
if (!(segment->temporal_offset_entries=av_calloc(segment->nb_index_entries, sizeof(*segment->temporal_offset_entries))) ||
|
|
!(segment->flag_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->flag_entries))) ||
|
|
!(segment->stream_offset_entries = av_calloc(segment->nb_index_entries, sizeof(*segment->stream_offset_entries)))) {
|
|
av_freep(&segment->temporal_offset_entries);
|
|
av_freep(&segment->flag_entries);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
for (i = 0; i < segment->nb_index_entries; i++) {
|
|
segment->temporal_offset_entries[i] = avio_r8(pb);
|
|
avio_r8(pb); /* KeyFrameOffset */
|
|
segment->flag_entries[i] = avio_r8(pb);
|
|
segment->stream_offset_entries[i] = avio_rb64(pb);
|
|
avio_skip(pb, length - 11);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_index_table_segment(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFIndexTableSegment *segment = arg;
|
|
switch(tag) {
|
|
case 0x3F05:
|
|
segment->edit_unit_byte_count = avio_rb32(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "EditUnitByteCount %d\n", segment->edit_unit_byte_count);
|
|
break;
|
|
case 0x3F06:
|
|
segment->index_sid = avio_rb32(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "IndexSID %d\n", segment->index_sid);
|
|
break;
|
|
case 0x3F07:
|
|
segment->body_sid = avio_rb32(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "BodySID %d\n", segment->body_sid);
|
|
break;
|
|
case 0x3F0A:
|
|
av_log(NULL, AV_LOG_TRACE, "IndexEntryArray found\n");
|
|
return mxf_read_index_entry_array(pb, segment);
|
|
case 0x3F0B:
|
|
segment->index_edit_rate.num = avio_rb32(pb);
|
|
segment->index_edit_rate.den = avio_rb32(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "IndexEditRate %d/%d\n", segment->index_edit_rate.num,
|
|
segment->index_edit_rate.den);
|
|
break;
|
|
case 0x3F0C:
|
|
segment->index_start_position = avio_rb64(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "IndexStartPosition %"PRId64"\n", segment->index_start_position);
|
|
break;
|
|
case 0x3F0D:
|
|
segment->index_duration = avio_rb64(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "IndexDuration %"PRId64"\n", segment->index_duration);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void mxf_read_pixel_layout(AVIOContext *pb, MXFDescriptor *descriptor)
|
|
{
|
|
int code, value, ofs = 0;
|
|
char layout[16] = {0}; /* not for printing, may end up not terminated on purpose */
|
|
|
|
do {
|
|
code = avio_r8(pb);
|
|
value = avio_r8(pb);
|
|
av_log(NULL, AV_LOG_TRACE, "pixel layout: code %#x\n", code);
|
|
|
|
if (ofs <= 14) {
|
|
layout[ofs++] = code;
|
|
layout[ofs++] = value;
|
|
} else
|
|
break; /* don't read byte by byte on sneaky files filled with lots of non-zeroes */
|
|
} while (code != 0); /* SMPTE 377M E.2.46 */
|
|
|
|
ff_mxf_decode_pixel_layout(layout, &descriptor->pix_fmt);
|
|
}
|
|
|
|
static int mxf_read_generic_descriptor(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFDescriptor *descriptor = arg;
|
|
switch(tag) {
|
|
case 0x3F01:
|
|
return mxf_read_strong_ref_array(pb, &descriptor->sub_descriptors_refs,
|
|
&descriptor->sub_descriptors_count);
|
|
case 0x3002: /* ContainerDuration */
|
|
descriptor->duration = avio_rb64(pb);
|
|
break;
|
|
case 0x3004:
|
|
avio_read(pb, descriptor->essence_container_ul, 16);
|
|
break;
|
|
case 0x3005:
|
|
avio_read(pb, descriptor->codec_ul, 16);
|
|
break;
|
|
case 0x3006:
|
|
descriptor->linked_track_id = avio_rb32(pb);
|
|
break;
|
|
case 0x3201: /* PictureEssenceCoding */
|
|
avio_read(pb, descriptor->essence_codec_ul, 16);
|
|
break;
|
|
case 0x3203:
|
|
descriptor->width = avio_rb32(pb);
|
|
break;
|
|
case 0x3202:
|
|
descriptor->height = avio_rb32(pb);
|
|
break;
|
|
case 0x320C:
|
|
descriptor->frame_layout = avio_r8(pb);
|
|
break;
|
|
case 0x320E:
|
|
descriptor->aspect_ratio.num = avio_rb32(pb);
|
|
descriptor->aspect_ratio.den = avio_rb32(pb);
|
|
break;
|
|
case 0x3212:
|
|
descriptor->field_dominance = avio_r8(pb);
|
|
break;
|
|
case 0x3301:
|
|
descriptor->component_depth = avio_rb32(pb);
|
|
break;
|
|
case 0x3302:
|
|
descriptor->horiz_subsampling = avio_rb32(pb);
|
|
break;
|
|
case 0x3308:
|
|
descriptor->vert_subsampling = avio_rb32(pb);
|
|
break;
|
|
case 0x3D03:
|
|
descriptor->sample_rate.num = avio_rb32(pb);
|
|
descriptor->sample_rate.den = avio_rb32(pb);
|
|
break;
|
|
case 0x3D06: /* SoundEssenceCompression */
|
|
avio_read(pb, descriptor->essence_codec_ul, 16);
|
|
break;
|
|
case 0x3D07:
|
|
descriptor->channels = avio_rb32(pb);
|
|
break;
|
|
case 0x3D01:
|
|
descriptor->bits_per_sample = avio_rb32(pb);
|
|
break;
|
|
case 0x3401:
|
|
mxf_read_pixel_layout(pb, descriptor);
|
|
break;
|
|
default:
|
|
/* Private uid used by SONY C0023S01.mxf */
|
|
if (IS_KLV_KEY(uid, mxf_sony_mpeg4_extradata)) {
|
|
if (descriptor->extradata)
|
|
av_log(NULL, AV_LOG_WARNING, "Duplicate sony_mpeg4_extradata\n");
|
|
av_free(descriptor->extradata);
|
|
descriptor->extradata_size = 0;
|
|
descriptor->extradata = av_malloc(size);
|
|
if (!descriptor->extradata)
|
|
return AVERROR(ENOMEM);
|
|
descriptor->extradata_size = size;
|
|
avio_read(pb, descriptor->extradata, size);
|
|
}
|
|
if (IS_KLV_KEY(uid, mxf_jp2k_rsiz)) {
|
|
uint32_t rsiz = avio_rb16(pb);
|
|
if (rsiz == FF_PROFILE_JPEG2000_DCINEMA_2K ||
|
|
rsiz == FF_PROFILE_JPEG2000_DCINEMA_4K)
|
|
descriptor->pix_fmt = AV_PIX_FMT_XYZ12;
|
|
}
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_indirect_value(void *arg, AVIOContext *pb, int size)
|
|
{
|
|
MXFTaggedValue *tagged_value = arg;
|
|
uint8_t key[17];
|
|
|
|
if (size <= 17)
|
|
return 0;
|
|
|
|
avio_read(pb, key, 17);
|
|
/* TODO: handle other types of of indirect values */
|
|
if (memcmp(key, mxf_indirect_value_utf16le, 17) == 0) {
|
|
return mxf_read_utf16le_string(pb, size - 17, &tagged_value->value);
|
|
} else if (memcmp(key, mxf_indirect_value_utf16be, 17) == 0) {
|
|
return mxf_read_utf16be_string(pb, size - 17, &tagged_value->value);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_tagged_value(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFTaggedValue *tagged_value = arg;
|
|
switch (tag){
|
|
case 0x5001:
|
|
return mxf_read_utf16be_string(pb, size, &tagged_value->name);
|
|
case 0x5003:
|
|
return mxf_read_indirect_value(tagged_value, pb, size);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Match an uid independently of the version byte and up to len common bytes
|
|
* Returns: boolean
|
|
*/
|
|
static int mxf_match_uid(const UID key, const UID uid, int len)
|
|
{
|
|
int i;
|
|
for (i = 0; i < len; i++) {
|
|
if (i != 7 && key[i] != uid[i])
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static const MXFCodecUL *mxf_get_codec_ul(const MXFCodecUL *uls, UID *uid)
|
|
{
|
|
while (uls->uid[0]) {
|
|
if(mxf_match_uid(uls->uid, *uid, uls->matching_len))
|
|
break;
|
|
uls++;
|
|
}
|
|
return uls;
|
|
}
|
|
|
|
static void *mxf_resolve_strong_ref(MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
|
|
{
|
|
int i;
|
|
|
|
if (!strong_ref)
|
|
return NULL;
|
|
for (i = 0; i < mxf->metadata_sets_count; i++) {
|
|
if (!memcmp(*strong_ref, mxf->metadata_sets[i]->uid, 16) &&
|
|
(type == AnyType || mxf->metadata_sets[i]->type == type)) {
|
|
return mxf->metadata_sets[i];
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static const MXFCodecUL mxf_picture_essence_container_uls[] = {
|
|
// video essence container uls
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14, AV_CODEC_ID_H264 }, /* H264 Frame wrapped */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14, AV_CODEC_ID_VC1 }, /* VC-1 Frame wrapped */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MPEG-ES Frame wrapped */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* Type D-10 mapping of 40Mbps 525/60-I */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14, AV_CODEC_ID_DVVIDEO }, /* DV 625 25mbps */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14, AV_CODEC_ID_RAWVIDEO }, /* Uncompressed Picture */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14, AV_CODEC_ID_RAWVIDEO }, /* Legacy ?? Uncompressed Picture */
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
|
|
};
|
|
|
|
/* EC ULs for intra-only formats */
|
|
static const MXFCodecUL mxf_intra_only_essence_container_uls[] = {
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, /* MXF-GC SMPTE D-10 Mappings */
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
|
|
};
|
|
|
|
/* intra-only PictureEssenceCoding ULs, where no corresponding EC UL exists */
|
|
static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14, AV_CODEC_ID_H264 }, /* H.264/MPEG-4 AVC Intra Profiles */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14, AV_CODEC_ID_JPEG2000 }, /* JPEG2000 Codestream */
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
|
|
};
|
|
|
|
/* actual coded width for AVC-Intra to allow selecting correct SPS/PPS */
|
|
static const MXFCodecUL mxf_intra_only_picture_coded_width[] = {
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 },
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, 0 },
|
|
};
|
|
|
|
static const MXFCodecUL mxf_sound_essence_container_uls[] = {
|
|
// sound essence container uls
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14, AV_CODEC_ID_MP2 }, /* MPEG-ES Frame wrapped, 0x40 ??? stream id */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE }, /* D-10 Mapping 50Mbps PAL Extended Template */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, /* 0001GL00.MXF.A1.mxf_opatom.mxf */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14, AV_CODEC_ID_AAC }, /* MPEG2 AAC ADTS (legacy) */
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
|
|
};
|
|
|
|
static const MXFCodecUL mxf_data_essence_container_uls[] = {
|
|
{ { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, 0 },
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
|
|
};
|
|
|
|
static const char* const mxf_data_essence_descriptor[] = {
|
|
"vbi_vanc_smpte_436M",
|
|
};
|
|
|
|
static int mxf_get_sorted_table_segments(MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
|
|
{
|
|
int i, j, nb_segments = 0;
|
|
MXFIndexTableSegment **unsorted_segments;
|
|
int last_body_sid = -1, last_index_sid = -1, last_index_start = -1;
|
|
|
|
/* count number of segments, allocate arrays and copy unsorted segments */
|
|
for (i = 0; i < mxf->metadata_sets_count; i++)
|
|
if (mxf->metadata_sets[i]->type == IndexTableSegment)
|
|
nb_segments++;
|
|
|
|
if (!nb_segments)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
if (!(unsorted_segments = av_calloc(nb_segments, sizeof(*unsorted_segments))) ||
|
|
!(*sorted_segments = av_calloc(nb_segments, sizeof(**sorted_segments)))) {
|
|
av_freep(sorted_segments);
|
|
av_free(unsorted_segments);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
for (i = j = 0; i < mxf->metadata_sets_count; i++)
|
|
if (mxf->metadata_sets[i]->type == IndexTableSegment)
|
|
unsorted_segments[j++] = (MXFIndexTableSegment*)mxf->metadata_sets[i];
|
|
|
|
*nb_sorted_segments = 0;
|
|
|
|
/* sort segments by {BodySID, IndexSID, IndexStartPosition}, remove duplicates while we're at it */
|
|
for (i = 0; i < nb_segments; i++) {
|
|
int best = -1, best_body_sid = -1, best_index_sid = -1, best_index_start = -1;
|
|
uint64_t best_index_duration = 0;
|
|
|
|
for (j = 0; j < nb_segments; j++) {
|
|
MXFIndexTableSegment *s = unsorted_segments[j];
|
|
|
|
/* Require larger BosySID, IndexSID or IndexStartPosition then the previous entry. This removes duplicates.
|
|
* We want the smallest values for the keys than what we currently have, unless this is the first such entry this time around.
|
|
* If we come across an entry with the same IndexStartPosition but larger IndexDuration, then we'll prefer it over the one we currently have.
|
|
*/
|
|
if ((i == 0 || s->body_sid > last_body_sid || s->index_sid > last_index_sid || s->index_start_position > last_index_start) &&
|
|
(best == -1 || s->body_sid < best_body_sid || s->index_sid < best_index_sid || s->index_start_position < best_index_start ||
|
|
(s->index_start_position == best_index_start && s->index_duration > best_index_duration))) {
|
|
best = j;
|
|
best_body_sid = s->body_sid;
|
|
best_index_sid = s->index_sid;
|
|
best_index_start = s->index_start_position;
|
|
best_index_duration = s->index_duration;
|
|
}
|
|
}
|
|
|
|
/* no suitable entry found -> we're done */
|
|
if (best == -1)
|
|
break;
|
|
|
|
(*sorted_segments)[(*nb_sorted_segments)++] = unsorted_segments[best];
|
|
last_body_sid = best_body_sid;
|
|
last_index_sid = best_index_sid;
|
|
last_index_start = best_index_start;
|
|
}
|
|
|
|
av_free(unsorted_segments);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Computes the absolute file offset of the given essence container offset
|
|
*/
|
|
static int mxf_absolute_bodysid_offset(MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
|
|
{
|
|
int x;
|
|
int64_t offset_in = offset; /* for logging */
|
|
|
|
for (x = 0; x < mxf->partitions_count; x++) {
|
|
MXFPartition *p = &mxf->partitions[x];
|
|
|
|
if (p->body_sid != body_sid)
|
|
continue;
|
|
|
|
if (offset < p->essence_length || !p->essence_length) {
|
|
*offset_out = p->essence_offset + offset;
|
|
return 0;
|
|
}
|
|
|
|
offset -= p->essence_length;
|
|
}
|
|
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"failed to find absolute offset of %"PRIX64" in BodySID %i - partial file?\n",
|
|
offset_in, body_sid);
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/**
|
|
* Returns the end position of the essence container with given BodySID, or zero if unknown
|
|
*/
|
|
static int64_t mxf_essence_container_end(MXFContext *mxf, int body_sid)
|
|
{
|
|
int x;
|
|
int64_t ret = 0;
|
|
|
|
for (x = 0; x < mxf->partitions_count; x++) {
|
|
MXFPartition *p = &mxf->partitions[x];
|
|
|
|
if (p->body_sid != body_sid)
|
|
continue;
|
|
|
|
if (!p->essence_length)
|
|
return 0;
|
|
|
|
ret = p->essence_offset + p->essence_length;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* EditUnit -> absolute offset */
|
|
static int mxf_edit_unit_absolute_offset(MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag)
|
|
{
|
|
int i;
|
|
int64_t offset_temp = 0;
|
|
|
|
for (i = 0; i < index_table->nb_segments; i++) {
|
|
MXFIndexTableSegment *s = index_table->segments[i];
|
|
|
|
edit_unit = FFMAX(edit_unit, s->index_start_position); /* clamp if trying to seek before start */
|
|
|
|
if (edit_unit < s->index_start_position + s->index_duration) {
|
|
int64_t index = edit_unit - s->index_start_position;
|
|
|
|
if (s->edit_unit_byte_count)
|
|
offset_temp += s->edit_unit_byte_count * index;
|
|
else if (s->nb_index_entries) {
|
|
if (s->nb_index_entries == 2 * s->index_duration + 1)
|
|
index *= 2; /* Avid index */
|
|
|
|
if (index < 0 || index >= s->nb_index_entries) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" IndexEntryArray too small\n",
|
|
index_table->index_sid, s->index_start_position);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
offset_temp = s->stream_offset_entries[index];
|
|
} else {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "IndexSID %i segment at %"PRId64" missing EditUnitByteCount and IndexEntryArray\n",
|
|
index_table->index_sid, s->index_start_position);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (edit_unit_out)
|
|
*edit_unit_out = edit_unit;
|
|
|
|
return mxf_absolute_bodysid_offset(mxf, index_table->body_sid, offset_temp, offset_out);
|
|
} else {
|
|
/* EditUnitByteCount == 0 for VBR indexes, which is fine since they use explicit StreamOffsets */
|
|
offset_temp += s->edit_unit_byte_count * s->index_duration;
|
|
}
|
|
}
|
|
|
|
if (nag)
|
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to map EditUnit %"PRId64" in IndexSID %i to an offset\n", edit_unit, index_table->index_sid);
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
static int mxf_compute_ptses_fake_index(MXFContext *mxf, MXFIndexTable *index_table)
|
|
{
|
|
int i, j, x;
|
|
int8_t max_temporal_offset = -128;
|
|
uint8_t *flags;
|
|
|
|
/* first compute how many entries we have */
|
|
for (i = 0; i < index_table->nb_segments; i++) {
|
|
MXFIndexTableSegment *s = index_table->segments[i];
|
|
|
|
if (!s->nb_index_entries) {
|
|
index_table->nb_ptses = 0;
|
|
return 0; /* no TemporalOffsets */
|
|
}
|
|
|
|
index_table->nb_ptses += s->index_duration;
|
|
}
|
|
|
|
/* paranoid check */
|
|
if (index_table->nb_ptses <= 0)
|
|
return 0;
|
|
|
|
if (!(index_table->ptses = av_calloc(index_table->nb_ptses, sizeof(int64_t))) ||
|
|
!(index_table->fake_index = av_calloc(index_table->nb_ptses, sizeof(AVIndexEntry))) ||
|
|
!(index_table->offsets = av_calloc(index_table->nb_ptses, sizeof(int8_t))) ||
|
|
!(flags = av_calloc(index_table->nb_ptses, sizeof(uint8_t)))) {
|
|
av_freep(&index_table->ptses);
|
|
av_freep(&index_table->fake_index);
|
|
av_freep(&index_table->offsets);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
/* we may have a few bad TemporalOffsets
|
|
* make sure the corresponding PTSes don't have the bogus value 0 */
|
|
for (x = 0; x < index_table->nb_ptses; x++)
|
|
index_table->ptses[x] = AV_NOPTS_VALUE;
|
|
|
|
/**
|
|
* We have this:
|
|
*
|
|
* x TemporalOffset
|
|
* 0: 0
|
|
* 1: 1
|
|
* 2: 1
|
|
* 3: -2
|
|
* 4: 1
|
|
* 5: 1
|
|
* 6: -2
|
|
*
|
|
* We want to transform it into this:
|
|
*
|
|
* x DTS PTS
|
|
* 0: -1 0
|
|
* 1: 0 3
|
|
* 2: 1 1
|
|
* 3: 2 2
|
|
* 4: 3 6
|
|
* 5: 4 4
|
|
* 6: 5 5
|
|
*
|
|
* We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses,
|
|
* then settings mxf->first_dts = -max(TemporalOffset[x]).
|
|
* The latter makes DTS <= PTS.
|
|
*/
|
|
for (i = x = 0; i < index_table->nb_segments; i++) {
|
|
MXFIndexTableSegment *s = index_table->segments[i];
|
|
int index_delta = 1;
|
|
int n = s->nb_index_entries;
|
|
|
|
if (s->nb_index_entries == 2 * s->index_duration + 1) {
|
|
index_delta = 2; /* Avid index */
|
|
/* ignore the last entry - it's the size of the essence container */
|
|
n--;
|
|
}
|
|
|
|
for (j = 0; j < n; j += index_delta, x++) {
|
|
int offset = s->temporal_offset_entries[j] / index_delta;
|
|
int index = x + offset;
|
|
|
|
if (x >= index_table->nb_ptses) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"x >= nb_ptses - IndexEntryCount %i < IndexDuration %"PRId64"?\n",
|
|
s->nb_index_entries, s->index_duration);
|
|
break;
|
|
}
|
|
|
|
flags[x] = !(s->flag_entries[j] & 0x30) ? AVINDEX_KEYFRAME : 0;
|
|
|
|
if (index < 0 || index >= index_table->nb_ptses) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"index entry %i + TemporalOffset %i = %i, which is out of bounds\n",
|
|
x, offset, index);
|
|
continue;
|
|
}
|
|
|
|
index_table->offsets[x] = offset;
|
|
index_table->ptses[index] = x;
|
|
max_temporal_offset = FFMAX(max_temporal_offset, offset);
|
|
}
|
|
}
|
|
|
|
/* calculate the fake index table in display order */
|
|
for (x = 0; x < index_table->nb_ptses; x++) {
|
|
index_table->fake_index[x].timestamp = x;
|
|
if (index_table->ptses[x] != AV_NOPTS_VALUE)
|
|
index_table->fake_index[index_table->ptses[x]].flags = flags[x];
|
|
}
|
|
av_freep(&flags);
|
|
|
|
index_table->first_dts = -max_temporal_offset;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Sorts and collects index table segments into index tables.
|
|
* Also computes PTSes if possible.
|
|
*/
|
|
static int mxf_compute_index_tables(MXFContext *mxf)
|
|
{
|
|
int i, j, k, ret, nb_sorted_segments;
|
|
MXFIndexTableSegment **sorted_segments = NULL;
|
|
|
|
if ((ret = mxf_get_sorted_table_segments(mxf, &nb_sorted_segments, &sorted_segments)) ||
|
|
nb_sorted_segments <= 0) {
|
|
av_log(mxf->fc, AV_LOG_WARNING, "broken or empty index\n");
|
|
return 0;
|
|
}
|
|
|
|
/* sanity check and count unique BodySIDs/IndexSIDs */
|
|
for (i = 0; i < nb_sorted_segments; i++) {
|
|
if (i == 0 || sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid)
|
|
mxf->nb_index_tables++;
|
|
else if (sorted_segments[i-1]->body_sid != sorted_segments[i]->body_sid) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "found inconsistent BodySID\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto finish_decoding_index;
|
|
}
|
|
}
|
|
|
|
mxf->index_tables = av_mallocz_array(mxf->nb_index_tables,
|
|
sizeof(*mxf->index_tables));
|
|
if (!mxf->index_tables) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate index tables\n");
|
|
ret = AVERROR(ENOMEM);
|
|
goto finish_decoding_index;
|
|
}
|
|
|
|
/* distribute sorted segments to index tables */
|
|
for (i = j = 0; i < nb_sorted_segments; i++) {
|
|
if (i != 0 && sorted_segments[i-1]->index_sid != sorted_segments[i]->index_sid) {
|
|
/* next IndexSID */
|
|
j++;
|
|
}
|
|
|
|
mxf->index_tables[j].nb_segments++;
|
|
}
|
|
|
|
for (i = j = 0; j < mxf->nb_index_tables; i += mxf->index_tables[j++].nb_segments) {
|
|
MXFIndexTable *t = &mxf->index_tables[j];
|
|
|
|
t->segments = av_mallocz_array(t->nb_segments,
|
|
sizeof(*t->segments));
|
|
|
|
if (!t->segments) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to allocate IndexTableSegment"
|
|
" pointer array\n");
|
|
ret = AVERROR(ENOMEM);
|
|
goto finish_decoding_index;
|
|
}
|
|
|
|
if (sorted_segments[i]->index_start_position)
|
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i starts at EditUnit %"PRId64" - seeking may not work as expected\n",
|
|
sorted_segments[i]->index_sid, sorted_segments[i]->index_start_position);
|
|
|
|
memcpy(t->segments, &sorted_segments[i], t->nb_segments * sizeof(MXFIndexTableSegment*));
|
|
t->index_sid = sorted_segments[i]->index_sid;
|
|
t->body_sid = sorted_segments[i]->body_sid;
|
|
|
|
if ((ret = mxf_compute_ptses_fake_index(mxf, t)) < 0)
|
|
goto finish_decoding_index;
|
|
|
|
/* fix zero IndexDurations */
|
|
for (k = 0; k < t->nb_segments; k++) {
|
|
if (t->segments[k]->index_duration)
|
|
continue;
|
|
|
|
if (t->nb_segments > 1)
|
|
av_log(mxf->fc, AV_LOG_WARNING, "IndexSID %i segment %i has zero IndexDuration and there's more than one segment\n",
|
|
t->index_sid, k);
|
|
|
|
if (mxf->fc->nb_streams <= 0) {
|
|
av_log(mxf->fc, AV_LOG_WARNING, "no streams?\n");
|
|
break;
|
|
}
|
|
|
|
/* assume the first stream's duration is reasonable
|
|
* leave index_duration = 0 on further segments in case we have any (unlikely)
|
|
*/
|
|
t->segments[k]->index_duration = mxf->fc->streams[0]->duration;
|
|
break;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
finish_decoding_index:
|
|
av_free(sorted_segments);
|
|
return ret;
|
|
}
|
|
|
|
static int mxf_is_intra_only(MXFDescriptor *descriptor)
|
|
{
|
|
return mxf_get_codec_ul(mxf_intra_only_essence_container_uls,
|
|
&descriptor->essence_container_ul)->id != AV_CODEC_ID_NONE ||
|
|
mxf_get_codec_ul(mxf_intra_only_picture_essence_coding_uls,
|
|
&descriptor->essence_codec_ul)->id != AV_CODEC_ID_NONE;
|
|
}
|
|
|
|
static int mxf_uid_to_str(UID uid, char **str)
|
|
{
|
|
int i;
|
|
char *p;
|
|
p = *str = av_mallocz(sizeof(UID) * 2 + 4 + 1);
|
|
if (!p)
|
|
return AVERROR(ENOMEM);
|
|
for (i = 0; i < sizeof(UID); i++) {
|
|
snprintf(p, 2 + 1, "%.2x", uid[i]);
|
|
p += 2;
|
|
if (i == 3 || i == 5 || i == 7 || i == 9) {
|
|
snprintf(p, 1 + 1, "-");
|
|
p++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_umid_to_str(UID ul, UID uid, char **str)
|
|
{
|
|
int i;
|
|
char *p;
|
|
p = *str = av_mallocz(sizeof(UID) * 4 + 2 + 1);
|
|
if (!p)
|
|
return AVERROR(ENOMEM);
|
|
snprintf(p, 2 + 1, "0x");
|
|
p += 2;
|
|
for (i = 0; i < sizeof(UID); i++) {
|
|
snprintf(p, 2 + 1, "%.2X", ul[i]);
|
|
p += 2;
|
|
|
|
}
|
|
for (i = 0; i < sizeof(UID); i++) {
|
|
snprintf(p, 2 + 1, "%.2X", uid[i]);
|
|
p += 2;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_add_umid_metadata(AVDictionary **pm, const char *key, MXFPackage* package)
|
|
{
|
|
char *str;
|
|
int ret;
|
|
if (!package)
|
|
return 0;
|
|
if ((ret = mxf_umid_to_str(package->package_ul, package->package_uid, &str)) < 0)
|
|
return ret;
|
|
av_dict_set(pm, key, str, AV_DICT_DONT_STRDUP_VAL);
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_add_timecode_metadata(AVDictionary **pm, const char *key, AVTimecode *tc)
|
|
{
|
|
char buf[AV_TIMECODE_STR_SIZE];
|
|
av_dict_set(pm, key, av_timecode_make_string(tc, buf, 0), 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static MXFTimecodeComponent* mxf_resolve_timecode_component(MXFContext *mxf, UID *strong_ref)
|
|
{
|
|
MXFStructuralComponent *component = NULL;
|
|
MXFPulldownComponent *pulldown = NULL;
|
|
|
|
component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
|
|
if (!component)
|
|
return NULL;
|
|
|
|
switch (component->type) {
|
|
case TimecodeComponent:
|
|
return (MXFTimecodeComponent*)component;
|
|
case PulldownComponent: /* timcode component may be located on a pulldown component */
|
|
pulldown = (MXFPulldownComponent*)component;
|
|
return mxf_resolve_strong_ref(mxf, &pulldown->input_segment_ref, TimecodeComponent);
|
|
default:
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static MXFPackage* mxf_resolve_source_package(MXFContext *mxf, UID package_uid)
|
|
{
|
|
MXFPackage *package = NULL;
|
|
int i;
|
|
|
|
for (i = 0; i < mxf->packages_count; i++) {
|
|
package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], SourcePackage);
|
|
if (!package)
|
|
continue;
|
|
|
|
if (!memcmp(package->package_uid, package_uid, 16))
|
|
return package;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static MXFDescriptor* mxf_resolve_multidescriptor(MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
|
|
{
|
|
MXFDescriptor *sub_descriptor = NULL;
|
|
int i;
|
|
|
|
if (!descriptor)
|
|
return NULL;
|
|
|
|
if (descriptor->type == MultipleDescriptor) {
|
|
for (i = 0; i < descriptor->sub_descriptors_count; i++) {
|
|
sub_descriptor = mxf_resolve_strong_ref(mxf, &descriptor->sub_descriptors_refs[i], Descriptor);
|
|
|
|
if (!sub_descriptor) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve sub descriptor strong ref\n");
|
|
continue;
|
|
}
|
|
if (sub_descriptor->linked_track_id == track_id) {
|
|
return sub_descriptor;
|
|
}
|
|
}
|
|
} else if (descriptor->type == Descriptor)
|
|
return descriptor;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static MXFStructuralComponent* mxf_resolve_essence_group_choice(MXFContext *mxf, MXFEssenceGroup *essence_group)
|
|
{
|
|
MXFStructuralComponent *component = NULL;
|
|
MXFPackage *package = NULL;
|
|
MXFDescriptor *descriptor = NULL;
|
|
int i;
|
|
|
|
if (!essence_group || !essence_group->structural_components_count)
|
|
return NULL;
|
|
|
|
/* essence groups contains multiple representations of the same media,
|
|
this return the first components with a valid Descriptor typically index 0 */
|
|
for (i =0; i < essence_group->structural_components_count; i++){
|
|
component = mxf_resolve_strong_ref(mxf, &essence_group->structural_components_refs[i], SourceClip);
|
|
if (!component)
|
|
continue;
|
|
|
|
if (!(package = mxf_resolve_source_package(mxf, component->source_package_uid)))
|
|
continue;
|
|
|
|
descriptor = mxf_resolve_strong_ref(mxf, &package->descriptor_ref, Descriptor);
|
|
if (descriptor)
|
|
return component;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static MXFStructuralComponent* mxf_resolve_sourceclip(MXFContext *mxf, UID *strong_ref)
|
|
{
|
|
MXFStructuralComponent *component = NULL;
|
|
|
|
component = mxf_resolve_strong_ref(mxf, strong_ref, AnyType);
|
|
if (!component)
|
|
return NULL;
|
|
switch (component->type) {
|
|
case SourceClip:
|
|
return component;
|
|
case EssenceGroup:
|
|
return mxf_resolve_essence_group_choice(mxf, (MXFEssenceGroup*) component);
|
|
default:
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int mxf_parse_package_comments(MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
|
|
{
|
|
MXFTaggedValue *tag;
|
|
int size, i;
|
|
char *key = NULL;
|
|
|
|
for (i = 0; i < package->comment_count; i++) {
|
|
tag = mxf_resolve_strong_ref(mxf, &package->comment_refs[i], TaggedValue);
|
|
if (!tag || !tag->name || !tag->value)
|
|
continue;
|
|
|
|
size = strlen(tag->name) + 8 + 1;
|
|
key = av_mallocz(size);
|
|
if (!key)
|
|
return AVERROR(ENOMEM);
|
|
|
|
snprintf(key, size, "comment_%s", tag->name);
|
|
av_dict_set(pm, key, tag->value, AV_DICT_DONT_STRDUP_KEY);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_parse_physical_source_package(MXFContext *mxf, MXFTrack *source_track, AVStream *st)
|
|
{
|
|
MXFPackage *physical_package = NULL;
|
|
MXFTrack *physical_track = NULL;
|
|
MXFStructuralComponent *sourceclip = NULL;
|
|
MXFTimecodeComponent *mxf_tc = NULL;
|
|
int i, j, k;
|
|
AVTimecode tc;
|
|
int flags;
|
|
int64_t start_position;
|
|
|
|
for (i = 0; i < source_track->sequence->structural_components_count; i++) {
|
|
sourceclip = mxf_resolve_strong_ref(mxf, &source_track->sequence->structural_components_refs[i], SourceClip);
|
|
if (!sourceclip)
|
|
continue;
|
|
|
|
if (!(physical_package = mxf_resolve_source_package(mxf, sourceclip->source_package_uid)))
|
|
break;
|
|
|
|
mxf_add_umid_metadata(&st->metadata, "reel_umid", physical_package);
|
|
|
|
/* the name of physical source package is name of the reel or tape */
|
|
if (physical_package->name && physical_package->name[0])
|
|
av_dict_set(&st->metadata, "reel_name", physical_package->name, 0);
|
|
|
|
/* the source timecode is calculated by adding the start_position of the sourceclip from the file source package track
|
|
* to the start_frame of the timecode component located on one of the tracks of the physical source package.
|
|
*/
|
|
for (j = 0; j < physical_package->tracks_count; j++) {
|
|
if (!(physical_track = mxf_resolve_strong_ref(mxf, &physical_package->tracks_refs[j], Track))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
|
|
continue;
|
|
}
|
|
|
|
if (!(physical_track->sequence = mxf_resolve_strong_ref(mxf, &physical_track->sequence_ref, Sequence))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
|
|
continue;
|
|
}
|
|
|
|
if (physical_track->edit_rate.num <= 0 ||
|
|
physical_track->edit_rate.den <= 0) {
|
|
av_log(mxf->fc, AV_LOG_WARNING,
|
|
"Invalid edit rate (%d/%d) found on structural"
|
|
" component #%d, defaulting to 25/1\n",
|
|
physical_track->edit_rate.num,
|
|
physical_track->edit_rate.den, i);
|
|
physical_track->edit_rate = (AVRational){25, 1};
|
|
}
|
|
|
|
for (k = 0; k < physical_track->sequence->structural_components_count; k++) {
|
|
if (!(mxf_tc = mxf_resolve_timecode_component(mxf, &physical_track->sequence->structural_components_refs[k])))
|
|
continue;
|
|
|
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
|
|
/* scale sourceclip start_position to match physical track edit rate */
|
|
start_position = av_rescale_q(sourceclip->start_position,
|
|
physical_track->edit_rate,
|
|
source_track->edit_rate);
|
|
|
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, start_position + mxf_tc->start_frame, mxf->fc) == 0) {
|
|
mxf_add_timecode_metadata(&st->metadata, "timecode", &tc);
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_parse_structural_metadata(MXFContext *mxf)
|
|
{
|
|
MXFPackage *material_package = NULL;
|
|
int i, j, k, ret;
|
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "metadata sets count %d\n", mxf->metadata_sets_count);
|
|
/* TODO: handle multiple material packages (OP3x) */
|
|
for (i = 0; i < mxf->packages_count; i++) {
|
|
material_package = mxf_resolve_strong_ref(mxf, &mxf->packages_refs[i], MaterialPackage);
|
|
if (material_package) break;
|
|
}
|
|
if (!material_package) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
mxf_add_umid_metadata(&mxf->fc->metadata, "material_package_umid", material_package);
|
|
if (material_package->name && material_package->name[0])
|
|
av_dict_set(&mxf->fc->metadata, "material_package_name", material_package->name, 0);
|
|
mxf_parse_package_comments(mxf, &mxf->fc->metadata, material_package);
|
|
|
|
for (i = 0; i < material_package->tracks_count; i++) {
|
|
MXFPackage *source_package = NULL;
|
|
MXFTrack *material_track = NULL;
|
|
MXFTrack *source_track = NULL;
|
|
MXFTrack *temp_track = NULL;
|
|
MXFDescriptor *descriptor = NULL;
|
|
MXFStructuralComponent *component = NULL;
|
|
MXFTimecodeComponent *mxf_tc = NULL;
|
|
UID *essence_container_ul = NULL;
|
|
const MXFCodecUL *codec_ul = NULL;
|
|
const MXFCodecUL *container_ul = NULL;
|
|
const MXFCodecUL *pix_fmt_ul = NULL;
|
|
AVStream *st;
|
|
AVTimecode tc;
|
|
int flags;
|
|
|
|
if (!(material_track = mxf_resolve_strong_ref(mxf, &material_package->tracks_refs[i], Track))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track strong ref\n");
|
|
continue;
|
|
}
|
|
|
|
if ((component = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, TimecodeComponent))) {
|
|
mxf_tc = (MXFTimecodeComponent*)component;
|
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
|
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
|
|
mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
|
|
}
|
|
}
|
|
|
|
if (!(material_track->sequence = mxf_resolve_strong_ref(mxf, &material_track->sequence_ref, Sequence))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve material track sequence strong ref\n");
|
|
continue;
|
|
}
|
|
|
|
for (j = 0; j < material_track->sequence->structural_components_count; j++) {
|
|
component = mxf_resolve_strong_ref(mxf, &material_track->sequence->structural_components_refs[j], TimecodeComponent);
|
|
if (!component)
|
|
continue;
|
|
|
|
mxf_tc = (MXFTimecodeComponent*)component;
|
|
flags = mxf_tc->drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0;
|
|
if (av_timecode_init(&tc, mxf_tc->rate, flags, mxf_tc->start_frame, mxf->fc) == 0) {
|
|
mxf_add_timecode_metadata(&mxf->fc->metadata, "timecode", &tc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* TODO: handle multiple source clips */
|
|
for (j = 0; j < material_track->sequence->structural_components_count; j++) {
|
|
component = mxf_resolve_sourceclip(mxf, &material_track->sequence->structural_components_refs[j]);
|
|
if (!component)
|
|
continue;
|
|
|
|
source_package = mxf_resolve_source_package(mxf, component->source_package_uid);
|
|
if (!source_package) {
|
|
av_log(mxf->fc, AV_LOG_TRACE, "material track %d: no corresponding source package found\n", material_track->track_id);
|
|
break;
|
|
}
|
|
for (k = 0; k < source_package->tracks_count; k++) {
|
|
if (!(temp_track = mxf_resolve_strong_ref(mxf, &source_package->tracks_refs[k], Track))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track strong ref\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail_and_free;
|
|
}
|
|
if (temp_track->track_id == component->source_track_id) {
|
|
source_track = temp_track;
|
|
break;
|
|
}
|
|
}
|
|
if (!source_track) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id);
|
|
break;
|
|
}
|
|
}
|
|
if (!source_track || !component)
|
|
continue;
|
|
|
|
if (!(source_track->sequence = mxf_resolve_strong_ref(mxf, &source_track->sequence_ref, Sequence))) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not resolve source track sequence strong ref\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail_and_free;
|
|
}
|
|
|
|
/* 0001GL00.MXF.A1.mxf_opatom.mxf has the same SourcePackageID as 0001GL.MXF.V1.mxf_opatom.mxf
|
|
* This would result in both files appearing to have two streams. Work around this by sanity checking DataDefinition */
|
|
if (memcmp(material_track->sequence->data_definition_ul, source_track->sequence->data_definition_ul, 16)) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "material track %d: DataDefinition mismatch\n", material_track->track_id);
|
|
continue;
|
|
}
|
|
|
|
st = avformat_new_stream(mxf->fc, NULL);
|
|
if (!st) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "could not allocate stream\n");
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail_and_free;
|
|
}
|
|
st->id = source_track->track_id;
|
|
st->priv_data = source_track;
|
|
|
|
source_package->descriptor = mxf_resolve_strong_ref(mxf, &source_package->descriptor_ref, AnyType);
|
|
descriptor = mxf_resolve_multidescriptor(mxf, source_package->descriptor, source_track->track_id);
|
|
|
|
/* A SourceClip from a EssenceGroup may only be a single frame of essence data. The clips duration is then how many
|
|
* frames its suppose to repeat for. Descriptor->duration, if present, contains the real duration of the essence data */
|
|
if (descriptor && descriptor->duration != AV_NOPTS_VALUE)
|
|
source_track->original_duration = st->duration = FFMIN(descriptor->duration, component->duration);
|
|
else
|
|
source_track->original_duration = st->duration = component->duration;
|
|
|
|
if (st->duration == -1)
|
|
st->duration = AV_NOPTS_VALUE;
|
|
st->start_time = component->start_position;
|
|
if (material_track->edit_rate.num <= 0 ||
|
|
material_track->edit_rate.den <= 0) {
|
|
av_log(mxf->fc, AV_LOG_WARNING,
|
|
"Invalid edit rate (%d/%d) found on stream #%d, "
|
|
"defaulting to 25/1\n",
|
|
material_track->edit_rate.num,
|
|
material_track->edit_rate.den, st->index);
|
|
material_track->edit_rate = (AVRational){25, 1};
|
|
}
|
|
avpriv_set_pts_info(st, 64, material_track->edit_rate.den, material_track->edit_rate.num);
|
|
|
|
/* ensure SourceTrack EditRate == MaterialTrack EditRate since only
|
|
* the former is accessible via st->priv_data */
|
|
source_track->edit_rate = material_track->edit_rate;
|
|
|
|
PRINT_KEY(mxf->fc, "data definition ul", source_track->sequence->data_definition_ul);
|
|
codec_ul = mxf_get_codec_ul(ff_mxf_data_definition_uls, &source_track->sequence->data_definition_ul);
|
|
st->codec->codec_type = codec_ul->id;
|
|
|
|
if (!descriptor) {
|
|
av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index);
|
|
continue;
|
|
}
|
|
PRINT_KEY(mxf->fc, "essence codec ul", descriptor->essence_codec_ul);
|
|
PRINT_KEY(mxf->fc, "essence container ul", descriptor->essence_container_ul);
|
|
essence_container_ul = &descriptor->essence_container_ul;
|
|
/* HACK: replacing the original key with mxf_encrypted_essence_container
|
|
* is not allowed according to s429-6, try to find correct information anyway */
|
|
if (IS_KLV_KEY(essence_container_ul, mxf_encrypted_essence_container)) {
|
|
av_log(mxf->fc, AV_LOG_INFO, "broken encrypted mxf file\n");
|
|
for (k = 0; k < mxf->metadata_sets_count; k++) {
|
|
MXFMetadataSet *metadata = mxf->metadata_sets[k];
|
|
if (metadata->type == CryptoContext) {
|
|
essence_container_ul = &((MXFCryptoContext *)metadata)->source_container_ul;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* TODO: drop PictureEssenceCoding and SoundEssenceCompression, only check EssenceContainer */
|
|
codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->essence_codec_ul);
|
|
st->codec->codec_id = (enum AVCodecID)codec_ul->id;
|
|
if (st->codec->codec_id == AV_CODEC_ID_NONE) {
|
|
codec_ul = mxf_get_codec_ul(ff_mxf_codec_uls, &descriptor->codec_ul);
|
|
st->codec->codec_id = (enum AVCodecID)codec_ul->id;
|
|
}
|
|
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "%s: Universal Label: ",
|
|
avcodec_get_name(st->codec->codec_id));
|
|
for (k = 0; k < 16; k++) {
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "%.2x",
|
|
descriptor->essence_codec_ul[k]);
|
|
if (!(k+1 & 19) || k == 5)
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, ".");
|
|
}
|
|
av_log(mxf->fc, AV_LOG_VERBOSE, "\n");
|
|
|
|
mxf_add_umid_metadata(&st->metadata, "file_package_umid", source_package);
|
|
if (source_package->name && source_package->name[0])
|
|
av_dict_set(&st->metadata, "file_package_name", source_package->name, 0);
|
|
|
|
mxf_parse_physical_source_package(mxf, source_track, st);
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
source_track->intra_only = mxf_is_intra_only(descriptor);
|
|
container_ul = mxf_get_codec_ul(mxf_picture_essence_container_uls, essence_container_ul);
|
|
if (st->codec->codec_id == AV_CODEC_ID_NONE)
|
|
st->codec->codec_id = container_ul->id;
|
|
st->codec->width = descriptor->width;
|
|
st->codec->height = descriptor->height; /* Field height, not frame height */
|
|
switch (descriptor->frame_layout) {
|
|
case FullFrame:
|
|
st->codec->field_order = AV_FIELD_PROGRESSIVE;
|
|
break;
|
|
case OneField:
|
|
/* Every other line is stored and needs to be duplicated. */
|
|
av_log(mxf->fc, AV_LOG_INFO, "OneField frame layout isn't currently supported\n");
|
|
break; /* The correct thing to do here is fall through, but by breaking we might be
|
|
able to decode some streams at half the vertical resolution, rather than not al all.
|
|
It's also for compatibility with the old behavior. */
|
|
case MixedFields:
|
|
break;
|
|
case SegmentedFrame:
|
|
st->codec->field_order = AV_FIELD_PROGRESSIVE;
|
|
case SeparateFields:
|
|
switch (descriptor->field_dominance) {
|
|
case MXF_TFF:
|
|
st->codec->field_order = AV_FIELD_TT;
|
|
break;
|
|
case MXF_BFF:
|
|
st->codec->field_order = AV_FIELD_BB;
|
|
break;
|
|
default:
|
|
avpriv_request_sample(mxf->fc,
|
|
"Field dominance %d support",
|
|
descriptor->field_dominance);
|
|
case 0: // we already have many samples with field_dominance == unknown
|
|
break;
|
|
}
|
|
/* Turn field height into frame height. */
|
|
st->codec->height *= 2;
|
|
break;
|
|
default:
|
|
av_log(mxf->fc, AV_LOG_INFO, "Unknown frame layout type: %d\n", descriptor->frame_layout);
|
|
}
|
|
if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO) {
|
|
st->codec->pix_fmt = descriptor->pix_fmt;
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
|
|
pix_fmt_ul = mxf_get_codec_ul(ff_mxf_pixel_format_uls,
|
|
&descriptor->essence_codec_ul);
|
|
st->codec->pix_fmt = (enum AVPixelFormat)pix_fmt_ul->id;
|
|
if (st->codec->pix_fmt == AV_PIX_FMT_NONE) {
|
|
st->codec->codec_tag = mxf_get_codec_ul(ff_mxf_codec_tag_uls,
|
|
&descriptor->essence_codec_ul)->id;
|
|
if (!st->codec->codec_tag) {
|
|
/* support files created before RP224v10 by defaulting to UYVY422
|
|
if subsampling is 4:2:2 and component depth is 8-bit */
|
|
if (descriptor->horiz_subsampling == 2 &&
|
|
descriptor->vert_subsampling == 1 &&
|
|
descriptor->component_depth == 8) {
|
|
st->codec->pix_fmt = AV_PIX_FMT_UYVY422;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
st->need_parsing = AVSTREAM_PARSE_HEADERS;
|
|
if (material_track->sequence->origin) {
|
|
av_dict_set_int(&st->metadata, "material_track_origin", material_track->sequence->origin, 0);
|
|
}
|
|
if (source_track->sequence->origin) {
|
|
av_dict_set_int(&st->metadata, "source_track_origin", source_track->sequence->origin, 0);
|
|
}
|
|
if (descriptor->aspect_ratio.num && descriptor->aspect_ratio.den)
|
|
st->display_aspect_ratio = descriptor->aspect_ratio;
|
|
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
container_ul = mxf_get_codec_ul(mxf_sound_essence_container_uls, essence_container_ul);
|
|
/* Only overwrite existing codec ID if it is unset or A-law, which is the default according to SMPTE RP 224. */
|
|
if (st->codec->codec_id == AV_CODEC_ID_NONE || (st->codec->codec_id == AV_CODEC_ID_PCM_ALAW && (enum AVCodecID)container_ul->id != AV_CODEC_ID_NONE))
|
|
st->codec->codec_id = (enum AVCodecID)container_ul->id;
|
|
st->codec->channels = descriptor->channels;
|
|
st->codec->bits_per_coded_sample = descriptor->bits_per_sample;
|
|
|
|
if (descriptor->sample_rate.den > 0) {
|
|
st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den;
|
|
avpriv_set_pts_info(st, 64, descriptor->sample_rate.den, descriptor->sample_rate.num);
|
|
} else {
|
|
av_log(mxf->fc, AV_LOG_WARNING, "invalid sample rate (%d/%d) "
|
|
"found for stream #%d, time base forced to 1/48000\n",
|
|
descriptor->sample_rate.num, descriptor->sample_rate.den,
|
|
st->index);
|
|
avpriv_set_pts_info(st, 64, 1, 48000);
|
|
}
|
|
|
|
/* if duration is set, rescale it from EditRate to SampleRate */
|
|
if (st->duration != AV_NOPTS_VALUE)
|
|
st->duration = av_rescale_q(st->duration,
|
|
av_inv_q(material_track->edit_rate),
|
|
st->time_base);
|
|
|
|
/* TODO: implement AV_CODEC_ID_RAWAUDIO */
|
|
if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
|
|
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S24LE;
|
|
else if (descriptor->bits_per_sample == 32)
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S32LE;
|
|
} else if (st->codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
|
|
if (descriptor->bits_per_sample > 16 && descriptor->bits_per_sample <= 24)
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S24BE;
|
|
else if (descriptor->bits_per_sample == 32)
|
|
st->codec->codec_id = AV_CODEC_ID_PCM_S32BE;
|
|
} else if (st->codec->codec_id == AV_CODEC_ID_MP2) {
|
|
st->need_parsing = AVSTREAM_PARSE_FULL;
|
|
}
|
|
} else if (st->codec->codec_type == AVMEDIA_TYPE_DATA) {
|
|
int codec_id = mxf_get_codec_ul(mxf_data_essence_container_uls,
|
|
essence_container_ul)->id;
|
|
if (codec_id >= 0 &&
|
|
codec_id < FF_ARRAY_ELEMS(mxf_data_essence_descriptor)) {
|
|
av_dict_set(&st->metadata, "data_type",
|
|
mxf_data_essence_descriptor[codec_id], 0);
|
|
}
|
|
}
|
|
if (descriptor->extradata) {
|
|
if (!ff_alloc_extradata(st->codec, descriptor->extradata_size)) {
|
|
memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size);
|
|
}
|
|
} else if (st->codec->codec_id == AV_CODEC_ID_H264) {
|
|
int coded_width = mxf_get_codec_ul(mxf_intra_only_picture_coded_width,
|
|
&descriptor->essence_codec_ul)->id;
|
|
if (coded_width)
|
|
st->codec->width = coded_width;
|
|
ret = ff_generate_avci_extradata(st);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
if (st->codec->codec_type != AVMEDIA_TYPE_DATA && (*essence_container_ul)[15] > 0x01) {
|
|
/* TODO: decode timestamps */
|
|
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
fail_and_free:
|
|
return ret;
|
|
}
|
|
|
|
static int mxf_timestamp_to_str(uint64_t timestamp, char **str)
|
|
{
|
|
struct tm time = { 0 };
|
|
time.tm_year = (timestamp >> 48) - 1900;
|
|
time.tm_mon = (timestamp >> 40 & 0xFF) - 1;
|
|
time.tm_mday = (timestamp >> 32 & 0xFF);
|
|
time.tm_hour = (timestamp >> 24 & 0xFF);
|
|
time.tm_min = (timestamp >> 16 & 0xFF);
|
|
time.tm_sec = (timestamp >> 8 & 0xFF);
|
|
|
|
/* msvcrt versions of strftime calls the invalid parameter handler
|
|
* (aborting the process if one isn't set) if the parameters are out
|
|
* of range. */
|
|
time.tm_mon = av_clip(time.tm_mon, 0, 11);
|
|
time.tm_mday = av_clip(time.tm_mday, 1, 31);
|
|
time.tm_hour = av_clip(time.tm_hour, 0, 23);
|
|
time.tm_min = av_clip(time.tm_min, 0, 59);
|
|
time.tm_sec = av_clip(time.tm_sec, 0, 59);
|
|
|
|
*str = av_mallocz(32);
|
|
if (!*str)
|
|
return AVERROR(ENOMEM);
|
|
if (!strftime(*str, 32, "%Y-%m-%d %H:%M:%S", &time))
|
|
(*str)[0] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define SET_STR_METADATA(pb, name, str) do { \
|
|
if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \
|
|
return ret; \
|
|
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
|
|
} while (0)
|
|
|
|
#define SET_UID_METADATA(pb, name, var, str) do { \
|
|
avio_read(pb, var, 16); \
|
|
if ((ret = mxf_uid_to_str(var, &str)) < 0) \
|
|
return ret; \
|
|
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
|
|
} while (0)
|
|
|
|
#define SET_TS_METADATA(pb, name, var, str) do { \
|
|
var = avio_rb64(pb); \
|
|
if ((ret = mxf_timestamp_to_str(var, &str)) < 0) \
|
|
return ret; \
|
|
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
|
|
} while (0)
|
|
|
|
static int mxf_read_identification_metadata(void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
|
|
{
|
|
MXFContext *mxf = arg;
|
|
AVFormatContext *s = mxf->fc;
|
|
int ret;
|
|
UID uid = { 0 };
|
|
char *str = NULL;
|
|
uint64_t ts;
|
|
switch (tag) {
|
|
case 0x3C01:
|
|
SET_STR_METADATA(pb, "company_name", str);
|
|
break;
|
|
case 0x3C02:
|
|
SET_STR_METADATA(pb, "product_name", str);
|
|
break;
|
|
case 0x3C04:
|
|
SET_STR_METADATA(pb, "product_version", str);
|
|
break;
|
|
case 0x3C05:
|
|
SET_UID_METADATA(pb, "product_uid", uid, str);
|
|
break;
|
|
case 0x3C06:
|
|
SET_TS_METADATA(pb, "modification_date", ts, str);
|
|
break;
|
|
case 0x3C08:
|
|
SET_STR_METADATA(pb, "application_platform", str);
|
|
break;
|
|
case 0x3C09:
|
|
SET_UID_METADATA(pb, "generation_uid", uid, str);
|
|
break;
|
|
case 0x3C0A:
|
|
SET_UID_METADATA(pb, "uid", uid, str);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_preface_metadata(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
|
|
{
|
|
MXFContext *mxf = arg;
|
|
AVFormatContext *s = mxf->fc;
|
|
int ret;
|
|
char *str = NULL;
|
|
|
|
if (tag >= 0x8000 && (IS_KLV_KEY(uid, mxf_avid_project_name))) {
|
|
SET_STR_METADATA(pb, "project_name", str);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }, mxf_read_primer_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x02,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x03,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x01,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x02,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x03,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x02,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }, mxf_read_partition_pack },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2f,0x00 }, mxf_read_preface_metadata },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x30,0x00 }, mxf_read_identification_metadata },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_content_storage, 0, AnyType },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_package, sizeof(MXFPackage), SourcePackage },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_package, sizeof(MXFPackage), MaterialPackage },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0f,0x00 }, mxf_read_sequence, sizeof(MXFSequence), Sequence },
|
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x05,0x00 }, mxf_read_essence_group, sizeof(MXFEssenceGroup), EssenceGroup},
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_source_clip, sizeof(MXFStructuralComponent), SourceClip },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3f,0x00 }, mxf_read_tagged_value, sizeof(MXFTaggedValue), TaggedValue },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), MultipleDescriptor },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* VANC/VBI - SMPTE 436M */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5e,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2AudioDescriptor */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Static Track */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_track, sizeof(MXFTrack), Track }, /* Generic Track */
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x14,0x00 }, mxf_read_timecode_component, sizeof(MXFTimecodeComponent), TimecodeComponent },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0c,0x00 }, mxf_read_pulldown_component, sizeof(MXFPulldownComponent), PulldownComponent },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x04,0x01,0x02,0x02,0x00,0x00 }, mxf_read_cryptographic_context, sizeof(MXFCryptoContext), CryptoContext },
|
|
{ { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }, mxf_read_index_table_segment, sizeof(MXFIndexTableSegment), IndexTableSegment },
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, 0, AnyType },
|
|
};
|
|
|
|
static int mxf_metadataset_init(MXFMetadataSet *ctx, enum MXFMetadataSetType type)
|
|
{
|
|
switch (type){
|
|
case MultipleDescriptor:
|
|
case Descriptor:
|
|
((MXFDescriptor*)ctx)->pix_fmt = AV_PIX_FMT_NONE;
|
|
((MXFDescriptor*)ctx)->duration = AV_NOPTS_VALUE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_local_tags(MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
|
|
{
|
|
AVIOContext *pb = mxf->fc->pb;
|
|
MXFMetadataSet *ctx = ctx_size ? av_mallocz(ctx_size) : mxf;
|
|
uint64_t klv_end = avio_tell(pb) + klv->length;
|
|
|
|
if (!ctx)
|
|
return AVERROR(ENOMEM);
|
|
mxf_metadataset_init(ctx, type);
|
|
while (avio_tell(pb) + 4 < klv_end && !avio_feof(pb)) {
|
|
int ret;
|
|
int tag = avio_rb16(pb);
|
|
int size = avio_rb16(pb); /* KLV specified by 0x53 */
|
|
uint64_t next = avio_tell(pb) + size;
|
|
UID uid = {0};
|
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x size %d\n", tag, size);
|
|
if (!size) { /* ignore empty tag, needed for some files with empty UMID tag */
|
|
av_log(mxf->fc, AV_LOG_ERROR, "local tag %#04x with 0 size\n", tag);
|
|
continue;
|
|
}
|
|
if (tag > 0x7FFF) { /* dynamic tag */
|
|
int i;
|
|
for (i = 0; i < mxf->local_tags_count; i++) {
|
|
int local_tag = AV_RB16(mxf->local_tags+i*18);
|
|
if (local_tag == tag) {
|
|
memcpy(uid, mxf->local_tags+i*18+2, 16);
|
|
av_log(mxf->fc, AV_LOG_TRACE, "local tag %#04x\n", local_tag);
|
|
PRINT_KEY(mxf->fc, "uid", uid);
|
|
}
|
|
}
|
|
}
|
|
if (ctx_size && tag == 0x3C0A) {
|
|
avio_read(pb, ctx->uid, 16);
|
|
} else if ((ret = read_child(ctx, pb, tag, size, uid, -1)) < 0) {
|
|
mxf_free_metadataset(&ctx, !!ctx_size);
|
|
return ret;
|
|
}
|
|
|
|
/* Accept the 64k local set limit being exceeded (Avid). Don't accept
|
|
* it extending past the end of the KLV though (zzuf5.mxf). */
|
|
if (avio_tell(pb) > klv_end) {
|
|
if (ctx_size) {
|
|
ctx->type = type;
|
|
mxf_free_metadataset(&ctx, !!ctx_size);
|
|
}
|
|
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"local tag %#04x extends past end of local set @ %#"PRIx64"\n",
|
|
tag, klv->offset);
|
|
return AVERROR_INVALIDDATA;
|
|
} else if (avio_tell(pb) <= next) /* only seek forward, else this can loop for a long time */
|
|
avio_seek(pb, next, SEEK_SET);
|
|
}
|
|
if (ctx_size) ctx->type = type;
|
|
return ctx_size ? mxf_add_metadata_set(mxf, ctx) : 0;
|
|
}
|
|
|
|
/**
|
|
* Matches any partition pack key, in other words:
|
|
* - HeaderPartition
|
|
* - BodyPartition
|
|
* - FooterPartition
|
|
* @return non-zero if the key is a partition pack key, zero otherwise
|
|
*/
|
|
static int mxf_is_partition_pack_key(UID key)
|
|
{
|
|
//NOTE: this is a little lax since it doesn't constraint key[14]
|
|
return !memcmp(key, mxf_header_partition_pack_key, 13) &&
|
|
key[13] >= 2 && key[13] <= 4;
|
|
}
|
|
|
|
/**
|
|
* Parses a metadata KLV
|
|
* @return <0 on error, 0 otherwise
|
|
*/
|
|
static int mxf_parse_klv(MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read,
|
|
int ctx_size, enum MXFMetadataSetType type)
|
|
{
|
|
AVFormatContext *s = mxf->fc;
|
|
int res;
|
|
if (klv.key[5] == 0x53) {
|
|
res = mxf_read_local_tags(mxf, &klv, read, ctx_size, type);
|
|
} else {
|
|
uint64_t next = avio_tell(s->pb) + klv.length;
|
|
res = read(mxf, s->pb, 0, klv.length, klv.key, klv.offset);
|
|
|
|
/* only seek forward, else this can loop for a long time */
|
|
if (avio_tell(s->pb) > next) {
|
|
av_log(s, AV_LOG_ERROR, "read past end of KLV @ %#"PRIx64"\n",
|
|
klv.offset);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
avio_seek(s->pb, next, SEEK_SET);
|
|
}
|
|
if (res < 0) {
|
|
av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
|
|
return res;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Seeks to the previous partition and parses it, if possible
|
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going
|
|
*/
|
|
static int mxf_seek_to_previous_partition(MXFContext *mxf)
|
|
{
|
|
AVIOContext *pb = mxf->fc->pb;
|
|
KLVPacket klv;
|
|
int64_t current_partition_ofs;
|
|
int ret;
|
|
|
|
if (!mxf->current_partition ||
|
|
mxf->run_in + mxf->current_partition->previous_partition <= mxf->last_forward_tell)
|
|
return 0; /* we've parsed all partitions */
|
|
|
|
/* seek to previous partition */
|
|
current_partition_ofs = mxf->current_partition->pack_ofs; //includes run-in
|
|
avio_seek(pb, mxf->run_in + mxf->current_partition->previous_partition, SEEK_SET);
|
|
mxf->current_partition = NULL;
|
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "seeking to previous partition\n");
|
|
|
|
/* Make sure this is actually a PartitionPack, and if so parse it.
|
|
* See deadlock2.mxf
|
|
*/
|
|
if ((ret = klv_read_packet(&klv, pb)) < 0) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "failed to read PartitionPack KLV\n");
|
|
return ret;
|
|
}
|
|
|
|
if (!mxf_is_partition_pack_key(klv.key)) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition @ %" PRIx64 " isn't a PartitionPack\n", klv.offset);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
/* We can't just check ofs >= current_partition_ofs because PreviousPartition
|
|
* can point to just before the current partition, causing klv_read_packet()
|
|
* to sync back up to it. See deadlock3.mxf
|
|
*/
|
|
if (klv.offset >= current_partition_ofs) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "PreviousPartition for PartitionPack @ %"
|
|
PRIx64 " indirectly points to itself\n", current_partition_ofs);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((ret = mxf_parse_klv(mxf, klv, mxf_read_partition_pack, 0, 0)) < 0)
|
|
return ret;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Called when essence is encountered
|
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going
|
|
*/
|
|
static int mxf_parse_handle_essence(MXFContext *mxf)
|
|
{
|
|
AVIOContext *pb = mxf->fc->pb;
|
|
int64_t ret;
|
|
|
|
if (mxf->parsing_backward) {
|
|
return mxf_seek_to_previous_partition(mxf);
|
|
} else {
|
|
if (!mxf->footer_partition) {
|
|
av_log(mxf->fc, AV_LOG_TRACE, "no FooterPartition\n");
|
|
return 0;
|
|
}
|
|
|
|
av_log(mxf->fc, AV_LOG_TRACE, "seeking to FooterPartition\n");
|
|
|
|
/* remember where we were so we don't end up seeking further back than this */
|
|
mxf->last_forward_tell = avio_tell(pb);
|
|
|
|
if (!pb->seekable) {
|
|
av_log(mxf->fc, AV_LOG_INFO, "file is not seekable - not parsing FooterPartition\n");
|
|
return -1;
|
|
}
|
|
|
|
/* seek to FooterPartition and parse backward */
|
|
if ((ret = avio_seek(pb, mxf->run_in + mxf->footer_partition, SEEK_SET)) < 0) {
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"failed to seek to FooterPartition @ 0x%" PRIx64
|
|
" (%"PRId64") - partial file?\n",
|
|
mxf->run_in + mxf->footer_partition, ret);
|
|
return ret;
|
|
}
|
|
|
|
mxf->current_partition = NULL;
|
|
mxf->parsing_backward = 1;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* Called when the next partition or EOF is encountered
|
|
* @return <= 0 if we should stop parsing, > 0 if we should keep going
|
|
*/
|
|
static int mxf_parse_handle_partition_or_eof(MXFContext *mxf)
|
|
{
|
|
return mxf->parsing_backward ? mxf_seek_to_previous_partition(mxf) : 1;
|
|
}
|
|
|
|
/**
|
|
* Figures out the proper offset and length of the essence container in each partition
|
|
*/
|
|
static void mxf_compute_essence_containers(MXFContext *mxf)
|
|
{
|
|
int x;
|
|
|
|
/* everything is already correct */
|
|
if (mxf->op == OPAtom)
|
|
return;
|
|
|
|
for (x = 0; x < mxf->partitions_count; x++) {
|
|
MXFPartition *p = &mxf->partitions[x];
|
|
|
|
if (!p->body_sid)
|
|
continue; /* BodySID == 0 -> no essence */
|
|
|
|
if (x >= mxf->partitions_count - 1)
|
|
break; /* FooterPartition - can't compute length (and we don't need to) */
|
|
|
|
/* essence container spans to the next partition */
|
|
p->essence_length = mxf->partitions[x+1].this_partition - p->essence_offset;
|
|
|
|
if (p->essence_length < 0) {
|
|
/* next ThisPartition < essence_offset */
|
|
p->essence_length = 0;
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"partition %i: bad ThisPartition = %"PRIX64"\n",
|
|
x+1, mxf->partitions[x+1].this_partition);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int64_t round_to_kag(int64_t position, int kag_size)
|
|
{
|
|
/* TODO: account for run-in? the spec isn't clear whether KAG should account for it */
|
|
/* NOTE: kag_size may be any integer between 1 - 2^10 */
|
|
int64_t ret = (position / kag_size) * kag_size;
|
|
return ret == position ? ret : ret + kag_size;
|
|
}
|
|
|
|
static int is_pcm(enum AVCodecID codec_id)
|
|
{
|
|
/* we only care about "normal" PCM codecs until we get samples */
|
|
return codec_id >= AV_CODEC_ID_PCM_S16LE && codec_id < AV_CODEC_ID_PCM_S24DAUD;
|
|
}
|
|
|
|
/**
|
|
* Deal with the case where for some audio atoms EditUnitByteCount is
|
|
* very small (2, 4..). In those cases we should read more than one
|
|
* sample per call to mxf_read_packet().
|
|
*/
|
|
static void mxf_handle_small_eubc(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
|
|
/* assuming non-OPAtom == frame wrapped
|
|
* no sane writer would wrap 2 byte PCM packets with 20 byte headers.. */
|
|
if (mxf->op != OPAtom)
|
|
return;
|
|
|
|
/* expect PCM with exactly one index table segment and a small (< 32) EUBC */
|
|
if (s->nb_streams != 1 ||
|
|
s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO ||
|
|
!is_pcm(s->streams[0]->codec->codec_id) ||
|
|
mxf->nb_index_tables != 1 ||
|
|
mxf->index_tables[0].nb_segments != 1 ||
|
|
mxf->index_tables[0].segments[0]->edit_unit_byte_count >= 32)
|
|
return;
|
|
|
|
/* arbitrarily default to 48 kHz PAL audio frame size */
|
|
/* TODO: We could compute this from the ratio between the audio
|
|
* and video edit rates for 48 kHz NTSC we could use the
|
|
* 1802-1802-1802-1802-1801 pattern. */
|
|
mxf->edit_units_per_packet = 1920;
|
|
}
|
|
|
|
/**
|
|
* Deal with the case where OPAtom files does not have any IndexTableSegments.
|
|
*/
|
|
static int mxf_handle_missing_index_segment(MXFContext *mxf)
|
|
{
|
|
AVFormatContext *s = mxf->fc;
|
|
AVStream *st = NULL;
|
|
MXFIndexTableSegment *segment = NULL;
|
|
MXFPartition *p = NULL;
|
|
int essence_partition_count = 0;
|
|
int i, ret;
|
|
|
|
if (mxf->op != OPAtom)
|
|
return 0;
|
|
|
|
/* TODO: support raw video without a index if they exist */
|
|
if (s->nb_streams != 1 || s->streams[0]->codec->codec_type != AVMEDIA_TYPE_AUDIO || !is_pcm(s->streams[0]->codec->codec_id))
|
|
return 0;
|
|
|
|
/* check if file already has a IndexTableSegment */
|
|
for (i = 0; i < mxf->metadata_sets_count; i++) {
|
|
if (mxf->metadata_sets[i]->type == IndexTableSegment)
|
|
return 0;
|
|
}
|
|
|
|
/* find the essence partition */
|
|
for (i = 0; i < mxf->partitions_count; i++) {
|
|
/* BodySID == 0 -> no essence */
|
|
if (!mxf->partitions[i].body_sid)
|
|
continue;
|
|
|
|
p = &mxf->partitions[i];
|
|
essence_partition_count++;
|
|
}
|
|
|
|
/* only handle files with a single essence partition */
|
|
if (essence_partition_count != 1)
|
|
return 0;
|
|
|
|
if (!(segment = av_mallocz(sizeof(*segment))))
|
|
return AVERROR(ENOMEM);
|
|
|
|
if ((ret = mxf_add_metadata_set(mxf, segment))) {
|
|
mxf_free_metadataset((MXFMetadataSet**)&segment, 1);
|
|
return ret;
|
|
}
|
|
|
|
st = s->streams[0];
|
|
segment->type = IndexTableSegment;
|
|
/* stream will be treated as small EditUnitByteCount */
|
|
segment->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
|
|
segment->index_start_position = 0;
|
|
segment->index_duration = s->streams[0]->duration;
|
|
segment->index_sid = p->index_sid;
|
|
segment->body_sid = p->body_sid;
|
|
return 0;
|
|
}
|
|
|
|
static void mxf_read_random_index_pack(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
uint32_t length;
|
|
int64_t file_size, max_rip_length, min_rip_length;
|
|
KLVPacket klv;
|
|
|
|
if (!s->pb->seekable)
|
|
return;
|
|
|
|
file_size = avio_size(s->pb);
|
|
|
|
/* S377m says to check the RIP length for "silly" values, without defining "silly".
|
|
* The limit below assumes a file with nothing but partition packs and a RIP.
|
|
* Before changing this, consider that a muxer may place each sample in its own partition.
|
|
*
|
|
* 105 is the size of the smallest possible PartitionPack
|
|
* 12 is the size of each RIP entry
|
|
* 28 is the size of the RIP header and footer, assuming an 8-byte BER
|
|
*/
|
|
max_rip_length = ((file_size - mxf->run_in) / 105) * 12 + 28;
|
|
max_rip_length = FFMIN(max_rip_length, INT_MAX); //2 GiB and up is also silly
|
|
|
|
/* We're only interested in RIPs with at least two entries.. */
|
|
min_rip_length = 16+1+24+4;
|
|
|
|
/* See S377m section 11 */
|
|
avio_seek(s->pb, file_size - 4, SEEK_SET);
|
|
length = avio_rb32(s->pb);
|
|
|
|
if (length < min_rip_length || length > max_rip_length)
|
|
goto end;
|
|
avio_seek(s->pb, file_size - length, SEEK_SET);
|
|
if (klv_read_packet(&klv, s->pb) < 0 ||
|
|
!IS_KLV_KEY(klv.key, mxf_random_index_pack_key) ||
|
|
klv.length != length - 20)
|
|
goto end;
|
|
|
|
avio_skip(s->pb, klv.length - 12);
|
|
mxf->footer_partition = avio_rb64(s->pb);
|
|
|
|
/* sanity check */
|
|
if (mxf->run_in + mxf->footer_partition >= file_size) {
|
|
av_log(s, AV_LOG_WARNING, "bad FooterPartition in RIP - ignoring\n");
|
|
mxf->footer_partition = 0;
|
|
}
|
|
|
|
end:
|
|
avio_seek(s->pb, mxf->run_in, SEEK_SET);
|
|
}
|
|
|
|
static int mxf_read_header(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
KLVPacket klv;
|
|
int64_t essence_offset = 0;
|
|
int ret;
|
|
|
|
mxf->last_forward_tell = INT64_MAX;
|
|
mxf->edit_units_per_packet = 1;
|
|
|
|
if (!mxf_read_sync(s->pb, mxf_header_partition_pack_key, 14)) {
|
|
av_log(s, AV_LOG_ERROR, "could not find header partition pack key\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avio_seek(s->pb, -14, SEEK_CUR);
|
|
mxf->fc = s;
|
|
mxf->run_in = avio_tell(s->pb);
|
|
|
|
mxf_read_random_index_pack(s);
|
|
|
|
while (!avio_feof(s->pb)) {
|
|
const MXFMetadataReadTableEntry *metadata;
|
|
|
|
if (klv_read_packet(&klv, s->pb) < 0) {
|
|
/* EOF - seek to previous partition or stop */
|
|
if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
|
|
break;
|
|
else
|
|
continue;
|
|
}
|
|
|
|
PRINT_KEY(s, "read header", klv.key);
|
|
av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
|
|
if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key) ||
|
|
IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
|
|
IS_KLV_KEY(klv.key, mxf_avid_essence_element_key) ||
|
|
IS_KLV_KEY(klv.key, mxf_system_item_key)) {
|
|
|
|
if (!mxf->current_partition) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "found essence prior to first PartitionPack\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if (!mxf->current_partition->essence_offset) {
|
|
/* for OP1a we compute essence_offset
|
|
* for OPAtom we point essence_offset after the KL (usually op1a_essence_offset + 20 or 25)
|
|
* TODO: for OP1a we could eliminate this entire if statement, always stopping parsing at op1a_essence_offset
|
|
* for OPAtom we still need the actual essence_offset though (the KL's length can vary)
|
|
*/
|
|
int64_t op1a_essence_offset =
|
|
round_to_kag(mxf->current_partition->this_partition +
|
|
mxf->current_partition->pack_length, mxf->current_partition->kag_size) +
|
|
round_to_kag(mxf->current_partition->header_byte_count, mxf->current_partition->kag_size) +
|
|
round_to_kag(mxf->current_partition->index_byte_count, mxf->current_partition->kag_size);
|
|
|
|
if (mxf->op == OPAtom) {
|
|
/* point essence_offset to the actual data
|
|
* OPAtom has all the essence in one big KLV
|
|
*/
|
|
mxf->current_partition->essence_offset = avio_tell(s->pb);
|
|
mxf->current_partition->essence_length = klv.length;
|
|
} else {
|
|
/* NOTE: op1a_essence_offset may be less than to klv.offset (C0023S01.mxf) */
|
|
mxf->current_partition->essence_offset = op1a_essence_offset;
|
|
}
|
|
}
|
|
|
|
if (!essence_offset)
|
|
essence_offset = klv.offset;
|
|
|
|
/* seek to footer, previous partition or stop */
|
|
if (mxf_parse_handle_essence(mxf) <= 0)
|
|
break;
|
|
continue;
|
|
} else if (mxf_is_partition_pack_key(klv.key) && mxf->current_partition) {
|
|
/* next partition pack - keep going, seek to previous partition or stop */
|
|
if(mxf_parse_handle_partition_or_eof(mxf) <= 0)
|
|
break;
|
|
else if (mxf->parsing_backward)
|
|
continue;
|
|
/* we're still parsing forward. proceed to parsing this partition pack */
|
|
}
|
|
|
|
for (metadata = mxf_metadata_read_table; metadata->read; metadata++) {
|
|
if (IS_KLV_KEY(klv.key, metadata->key)) {
|
|
if ((ret = mxf_parse_klv(mxf, klv, metadata->read, metadata->ctx_size, metadata->type)) < 0)
|
|
goto fail;
|
|
break;
|
|
}
|
|
}
|
|
if (!metadata->read) {
|
|
av_log(s, AV_LOG_VERBOSE, "Dark key " PRIxUID "\n",
|
|
UID_ARG(klv.key));
|
|
avio_skip(s->pb, klv.length);
|
|
}
|
|
}
|
|
/* FIXME avoid seek */
|
|
if (!essence_offset) {
|
|
av_log(s, AV_LOG_ERROR, "no essence\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
avio_seek(s->pb, essence_offset, SEEK_SET);
|
|
|
|
mxf_compute_essence_containers(mxf);
|
|
|
|
/* we need to do this before computing the index tables
|
|
* to be able to fill in zero IndexDurations with st->duration */
|
|
if ((ret = mxf_parse_structural_metadata(mxf)) < 0)
|
|
goto fail;
|
|
|
|
mxf_handle_missing_index_segment(mxf);
|
|
if ((ret = mxf_compute_index_tables(mxf)) < 0)
|
|
goto fail;
|
|
|
|
if (mxf->nb_index_tables > 1) {
|
|
/* TODO: look up which IndexSID to use via EssenceContainerData */
|
|
av_log(mxf->fc, AV_LOG_INFO, "got %i index tables - only the first one (IndexSID %i) will be used\n",
|
|
mxf->nb_index_tables, mxf->index_tables[0].index_sid);
|
|
} else if (mxf->nb_index_tables == 0 && mxf->op == OPAtom) {
|
|
av_log(mxf->fc, AV_LOG_ERROR, "cannot demux OPAtom without an index\n");
|
|
ret = AVERROR_INVALIDDATA;
|
|
goto fail;
|
|
}
|
|
|
|
mxf_handle_small_eubc(s);
|
|
|
|
return 0;
|
|
fail:
|
|
mxf_read_close(s);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Sets mxf->current_edit_unit based on what offset we're currently at.
|
|
* @return next_ofs if OK, <0 on error
|
|
*/
|
|
static int64_t mxf_set_current_edit_unit(MXFContext *mxf, int64_t current_offset)
|
|
{
|
|
int64_t last_ofs = -1, next_ofs = -1;
|
|
MXFIndexTable *t = &mxf->index_tables[0];
|
|
|
|
/* this is called from the OP1a demuxing logic, which means there
|
|
* may be no index tables */
|
|
if (mxf->nb_index_tables <= 0)
|
|
return -1;
|
|
|
|
/* find mxf->current_edit_unit so that the next edit unit starts ahead of current_offset */
|
|
while (mxf->current_edit_unit >= 0) {
|
|
if (mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + 1, NULL, &next_ofs, 0) < 0)
|
|
return -1;
|
|
|
|
if (next_ofs <= last_ofs) {
|
|
/* large next_ofs didn't change or current_edit_unit wrapped
|
|
* around this fixes the infinite loop on zzuf3.mxf */
|
|
av_log(mxf->fc, AV_LOG_ERROR,
|
|
"next_ofs didn't change. not deriving packet timestamps\n");
|
|
return -1;
|
|
}
|
|
|
|
if (next_ofs > current_offset)
|
|
break;
|
|
|
|
last_ofs = next_ofs;
|
|
mxf->current_edit_unit++;
|
|
}
|
|
|
|
/* not checking mxf->current_edit_unit >= t->nb_ptses here since CBR files may lack IndexEntryArrays */
|
|
if (mxf->current_edit_unit < 0)
|
|
return -1;
|
|
|
|
return next_ofs;
|
|
}
|
|
|
|
static int mxf_compute_sample_count(MXFContext *mxf, int stream_index,
|
|
uint64_t *sample_count)
|
|
{
|
|
int i, total = 0, size = 0;
|
|
AVStream *st = mxf->fc->streams[stream_index];
|
|
MXFTrack *track = st->priv_data;
|
|
AVRational time_base = av_inv_q(track->edit_rate);
|
|
AVRational sample_rate = av_inv_q(st->time_base);
|
|
const MXFSamplesPerFrame *spf = NULL;
|
|
|
|
if ((sample_rate.num / sample_rate.den) == 48000)
|
|
spf = ff_mxf_get_samples_per_frame(mxf->fc, time_base);
|
|
if (!spf) {
|
|
int remainder = (sample_rate.num * time_base.num) %
|
|
(time_base.den * sample_rate.den);
|
|
*sample_count = av_q2d(av_mul_q((AVRational){mxf->current_edit_unit, 1},
|
|
av_mul_q(sample_rate, time_base)));
|
|
if (remainder)
|
|
av_log(mxf->fc, AV_LOG_WARNING,
|
|
"seeking detected on stream #%d with time base (%d/%d) and "
|
|
"sample rate (%d/%d), audio pts won't be accurate.\n",
|
|
stream_index, time_base.num, time_base.den,
|
|
sample_rate.num, sample_rate.den);
|
|
return 0;
|
|
}
|
|
|
|
while (spf->samples_per_frame[size]) {
|
|
total += spf->samples_per_frame[size];
|
|
size++;
|
|
}
|
|
|
|
av_assert2(size);
|
|
|
|
*sample_count = (mxf->current_edit_unit / size) * (uint64_t)total;
|
|
for (i = 0; i < mxf->current_edit_unit % size; i++) {
|
|
*sample_count += spf->samples_per_frame[i];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_set_audio_pts(MXFContext *mxf, AVCodecContext *codec,
|
|
AVPacket *pkt)
|
|
{
|
|
MXFTrack *track = mxf->fc->streams[pkt->stream_index]->priv_data;
|
|
int64_t bits_per_sample = codec->bits_per_coded_sample;
|
|
|
|
if (!bits_per_sample)
|
|
bits_per_sample = av_get_bits_per_sample(codec->codec_id);
|
|
|
|
pkt->pts = track->sample_count;
|
|
|
|
if ( codec->channels <= 0
|
|
|| bits_per_sample <= 0
|
|
|| codec->channels * (int64_t)bits_per_sample < 8)
|
|
return AVERROR(EINVAL);
|
|
track->sample_count += pkt->size / (codec->channels * (int64_t)bits_per_sample / 8);
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_packet_old(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
KLVPacket klv;
|
|
MXFContext *mxf = s->priv_data;
|
|
int ret;
|
|
|
|
while ((ret = klv_read_packet(&klv, s->pb)) == 0) {
|
|
PRINT_KEY(s, "read packet", klv.key);
|
|
av_log(s, AV_LOG_TRACE, "size %"PRIu64" offset %#"PRIx64"\n", klv.length, klv.offset);
|
|
if (IS_KLV_KEY(klv.key, mxf_encrypted_triplet_key)) {
|
|
ret = mxf_decrypt_triplet(s, pkt, &klv);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "invalid encoded triplet\n");
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
if (IS_KLV_KEY(klv.key, mxf_essence_element_key) ||
|
|
IS_KLV_KEY(klv.key, mxf_avid_essence_element_key)) {
|
|
int index = mxf_get_stream_index(s, &klv);
|
|
int64_t next_ofs, next_klv;
|
|
AVStream *st;
|
|
MXFTrack *track;
|
|
AVCodecContext *codec;
|
|
|
|
if (index < 0) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"error getting stream index %"PRIu32"\n",
|
|
AV_RB32(klv.key + 12));
|
|
goto skip;
|
|
}
|
|
|
|
st = s->streams[index];
|
|
track = st->priv_data;
|
|
|
|
if (s->streams[index]->discard == AVDISCARD_ALL)
|
|
goto skip;
|
|
|
|
next_klv = avio_tell(s->pb) + klv.length;
|
|
next_ofs = mxf_set_current_edit_unit(mxf, klv.offset);
|
|
|
|
if (next_ofs >= 0 && next_klv > next_ofs) {
|
|
/* if this check is hit then it's possible OPAtom was treated as OP1a
|
|
* truncate the packet since it's probably very large (>2 GiB is common) */
|
|
avpriv_request_sample(s,
|
|
"OPAtom misinterpreted as OP1a? "
|
|
"KLV for edit unit %i extending into "
|
|
"next edit unit",
|
|
mxf->current_edit_unit);
|
|
klv.length = next_ofs - avio_tell(s->pb);
|
|
}
|
|
|
|
/* check for 8 channels AES3 element */
|
|
if (klv.key[12] == 0x06 && klv.key[13] == 0x01 && klv.key[14] == 0x10) {
|
|
ret = mxf_get_d10_aes3_packet(s->pb, s->streams[index],
|
|
pkt, klv.length);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "error reading D-10 aes3 frame\n");
|
|
return ret;
|
|
}
|
|
} else {
|
|
ret = av_get_packet(s->pb, pkt, klv.length);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
pkt->stream_index = index;
|
|
pkt->pos = klv.offset;
|
|
|
|
codec = st->codec;
|
|
|
|
if (codec->codec_type == AVMEDIA_TYPE_VIDEO && next_ofs >= 0) {
|
|
/* mxf->current_edit_unit good - see if we have an
|
|
* index table to derive timestamps from */
|
|
MXFIndexTable *t = &mxf->index_tables[0];
|
|
|
|
if (mxf->nb_index_tables >= 1 && mxf->current_edit_unit < t->nb_ptses) {
|
|
pkt->dts = mxf->current_edit_unit + t->first_dts;
|
|
pkt->pts = t->ptses[mxf->current_edit_unit];
|
|
} else if (track->intra_only) {
|
|
/* intra-only -> PTS = EditUnit.
|
|
* let utils.c figure out DTS since it can be < PTS if low_delay = 0 (Sony IMX30) */
|
|
pkt->pts = mxf->current_edit_unit;
|
|
}
|
|
} else if (codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
ret = mxf_set_audio_pts(mxf, codec, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
/* seek for truncated packets */
|
|
avio_seek(s->pb, next_klv, SEEK_SET);
|
|
|
|
return 0;
|
|
} else
|
|
skip:
|
|
avio_skip(s->pb, klv.length);
|
|
}
|
|
return avio_feof(s->pb) ? AVERROR_EOF : ret;
|
|
}
|
|
|
|
static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
int ret, size;
|
|
int64_t ret64, pos, next_pos;
|
|
AVStream *st;
|
|
MXFIndexTable *t;
|
|
int edit_units;
|
|
|
|
if (mxf->op != OPAtom)
|
|
return mxf_read_packet_old(s, pkt);
|
|
|
|
// If we have no streams then we basically are at EOF
|
|
if (s->nb_streams < 1)
|
|
return AVERROR_EOF;
|
|
|
|
/* OPAtom - clip wrapped demuxing */
|
|
/* NOTE: mxf_read_header() makes sure nb_index_tables > 0 for OPAtom */
|
|
st = s->streams[0];
|
|
t = &mxf->index_tables[0];
|
|
|
|
if (mxf->current_edit_unit >= st->duration)
|
|
return AVERROR_EOF;
|
|
|
|
edit_units = FFMIN(mxf->edit_units_per_packet, st->duration - mxf->current_edit_unit);
|
|
|
|
if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit, NULL, &pos, 1)) < 0)
|
|
return ret;
|
|
|
|
/* compute size by finding the next edit unit or the end of the essence container
|
|
* not pretty, but it works */
|
|
if ((ret = mxf_edit_unit_absolute_offset(mxf, t, mxf->current_edit_unit + edit_units, NULL, &next_pos, 0)) < 0 &&
|
|
(next_pos = mxf_essence_container_end(mxf, t->body_sid)) <= 0) {
|
|
av_log(s, AV_LOG_ERROR, "unable to compute the size of the last packet\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((size = next_pos - pos) <= 0) {
|
|
av_log(s, AV_LOG_ERROR, "bad size: %i\n", size);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
|
|
if ((ret64 = avio_seek(s->pb, pos, SEEK_SET)) < 0)
|
|
return ret64;
|
|
|
|
if ((size = av_get_packet(s->pb, pkt, size)) < 0)
|
|
return size;
|
|
|
|
pkt->stream_index = 0;
|
|
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && t->ptses &&
|
|
mxf->current_edit_unit >= 0 && mxf->current_edit_unit < t->nb_ptses) {
|
|
pkt->dts = mxf->current_edit_unit + t->first_dts;
|
|
pkt->pts = t->ptses[mxf->current_edit_unit];
|
|
} else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
int ret = mxf_set_audio_pts(mxf, st->codec, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
mxf->current_edit_unit += edit_units;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_read_close(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
int i;
|
|
|
|
av_freep(&mxf->packages_refs);
|
|
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
s->streams[i]->priv_data = NULL;
|
|
|
|
for (i = 0; i < mxf->metadata_sets_count; i++) {
|
|
mxf_free_metadataset(mxf->metadata_sets + i, 1);
|
|
}
|
|
av_freep(&mxf->partitions);
|
|
av_freep(&mxf->metadata_sets);
|
|
av_freep(&mxf->aesc);
|
|
av_freep(&mxf->local_tags);
|
|
|
|
if (mxf->index_tables) {
|
|
for (i = 0; i < mxf->nb_index_tables; i++) {
|
|
av_freep(&mxf->index_tables[i].segments);
|
|
av_freep(&mxf->index_tables[i].ptses);
|
|
av_freep(&mxf->index_tables[i].fake_index);
|
|
av_freep(&mxf->index_tables[i].offsets);
|
|
}
|
|
}
|
|
av_freep(&mxf->index_tables);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mxf_probe(AVProbeData *p) {
|
|
const uint8_t *bufp = p->buf;
|
|
const uint8_t *end = p->buf + p->buf_size;
|
|
|
|
if (p->buf_size < sizeof(mxf_header_partition_pack_key))
|
|
return 0;
|
|
|
|
/* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */
|
|
end -= sizeof(mxf_header_partition_pack_key);
|
|
|
|
for (; bufp < end;) {
|
|
if (!((bufp[13] - 1) & 0xF2)){
|
|
if (AV_RN32(bufp ) == AV_RN32(mxf_header_partition_pack_key ) &&
|
|
AV_RN32(bufp+ 4) == AV_RN32(mxf_header_partition_pack_key+ 4) &&
|
|
AV_RN32(bufp+ 8) == AV_RN32(mxf_header_partition_pack_key+ 8) &&
|
|
AV_RN16(bufp+12) == AV_RN16(mxf_header_partition_pack_key+12))
|
|
return AVPROBE_SCORE_MAX;
|
|
bufp ++;
|
|
} else
|
|
bufp += 10;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* rudimentary byte seek */
|
|
/* XXX: use MXF Index */
|
|
static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
|
|
{
|
|
AVStream *st = s->streams[stream_index];
|
|
int64_t seconds;
|
|
MXFContext* mxf = s->priv_data;
|
|
int64_t seekpos;
|
|
int i, ret;
|
|
MXFIndexTable *t;
|
|
MXFTrack *source_track = st->priv_data;
|
|
|
|
/* if audio then truncate sample_time to EditRate */
|
|
if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
|
|
sample_time = av_rescale_q(sample_time, st->time_base,
|
|
av_inv_q(source_track->edit_rate));
|
|
|
|
if (mxf->nb_index_tables <= 0) {
|
|
if (!s->bit_rate)
|
|
return AVERROR_INVALIDDATA;
|
|
if (sample_time < 0)
|
|
sample_time = 0;
|
|
seconds = av_rescale(sample_time, st->time_base.num, st->time_base.den);
|
|
|
|
seekpos = avio_seek(s->pb, (s->bit_rate * seconds) >> 3, SEEK_SET);
|
|
if (seekpos < 0)
|
|
return seekpos;
|
|
|
|
ff_update_cur_dts(s, st, sample_time);
|
|
mxf->current_edit_unit = sample_time;
|
|
} else {
|
|
t = &mxf->index_tables[0];
|
|
|
|
/* clamp above zero, else ff_index_search_timestamp() returns negative
|
|
* this also means we allow seeking before the start */
|
|
sample_time = FFMAX(sample_time, 0);
|
|
|
|
if (t->fake_index) {
|
|
/* The first frames may not be keyframes in presentation order, so
|
|
* we have to advance the target to be able to find the first
|
|
* keyframe backwards... */
|
|
if (!(flags & AVSEEK_FLAG_ANY) &&
|
|
(flags & AVSEEK_FLAG_BACKWARD) &&
|
|
t->ptses[0] != AV_NOPTS_VALUE &&
|
|
sample_time < t->ptses[0] &&
|
|
(t->fake_index[t->ptses[0]].flags & AVINDEX_KEYFRAME))
|
|
sample_time = t->ptses[0];
|
|
|
|
/* behave as if we have a proper index */
|
|
if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
|
|
return sample_time;
|
|
/* get the stored order index from the display order index */
|
|
sample_time += t->offsets[sample_time];
|
|
} else {
|
|
/* no IndexEntryArray (one or more CBR segments)
|
|
* make sure we don't seek past the end */
|
|
sample_time = FFMIN(sample_time, source_track->original_duration - 1);
|
|
}
|
|
|
|
if ((ret = mxf_edit_unit_absolute_offset(mxf, t, sample_time, &sample_time, &seekpos, 1)) < 0)
|
|
return ret;
|
|
|
|
ff_update_cur_dts(s, st, sample_time);
|
|
mxf->current_edit_unit = sample_time;
|
|
avio_seek(s->pb, seekpos, SEEK_SET);
|
|
}
|
|
|
|
// Update all tracks sample count
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *cur_st = s->streams[i];
|
|
MXFTrack *cur_track = cur_st->priv_data;
|
|
uint64_t current_sample_count = 0;
|
|
if (cur_st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
ret = mxf_compute_sample_count(mxf, i, ¤t_sample_count);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
cur_track->sample_count = current_sample_count;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_mxf_demuxer = {
|
|
.name = "mxf",
|
|
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
|
|
.flags = AVFMT_SEEK_TO_PTS,
|
|
.priv_data_size = sizeof(MXFContext),
|
|
.read_probe = mxf_probe,
|
|
.read_header = mxf_read_header,
|
|
.read_packet = mxf_read_packet,
|
|
.read_close = mxf_read_close,
|
|
.read_seek = mxf_read_seek,
|
|
};
|