mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-30 15:00:29 +00:00
a78f6b8cb9
* qatar/master: (38 commits) v210enc: remove redundant check for pix_fmt wavpack: allow user to disable CRC checking v210enc: Use Bytestream2 functions cafdec: Check return value of avio_seek and avoid modifying state if it fails yop: Check return value of avio_seek and avoid modifying state if it fails tta: Check return value of avio_seek and avoid modifying state if it fails tmv: Check return value of avio_seek and avoid modifying state if it fails r3d: Check return value of avio_seek and avoid modifying state if it fails nsvdec: Check return value of avio_seek and avoid modifying state if it fails mpc8: Check return value of avio_seek and avoid modifying state if it fails jvdec: Check return value of avio_seek and avoid modifying state if it fails filmstripdec: Check return value of avio_seek and avoid modifying state if it fails ffmdec: Check return value of avio_seek and avoid modifying state if it fails dv: Check return value of avio_seek and avoid modifying state if it fails bink: Check return value of avio_seek and avoid modifying state if it fails Check AVCodec.pix_fmts in avcodec_open2() svq3: Prevent illegal reads while parsing extradata. remove ParseContext1 vc1: use ff_parse_close mpegvideo parser: move specific fields into private context ... Conflicts: libavcodec/4xm.c libavcodec/aacdec.c libavcodec/h264.c libavcodec/h264.h libavcodec/h264_cabac.c libavcodec/h264_cavlc.c libavcodec/mpeg4video_parser.c libavcodec/svq3.c libavcodec/v210enc.c libavformat/cafdec.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
116 lines
4.5 KiB
C
116 lines
4.5 KiB
C
/*
|
|
* Constants for DV codec
|
|
* Copyright (c) 2002 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Constants for DV codec.
|
|
*/
|
|
|
|
#ifndef AVCODEC_DVDATA_H
|
|
#define AVCODEC_DVDATA_H
|
|
|
|
#include "libavutil/rational.h"
|
|
#include "avcodec.h"
|
|
|
|
typedef struct DVwork_chunk {
|
|
uint16_t buf_offset;
|
|
uint16_t mb_coordinates[5];
|
|
} DVwork_chunk;
|
|
|
|
/*
|
|
* DVprofile is used to express the differences between various
|
|
* DV flavors. For now it's primarily used for differentiating
|
|
* 525/60 and 625/50, but the plans are to use it for various
|
|
* DV specs as well (e.g. SMPTE314M vs. IEC 61834).
|
|
*/
|
|
typedef struct DVprofile {
|
|
int dsf; /* value of the dsf in the DV header */
|
|
int video_stype; /* stype for VAUX source pack */
|
|
int frame_size; /* total size of one frame in bytes */
|
|
int difseg_size; /* number of DIF segments per DIF channel */
|
|
int n_difchan; /* number of DIF channels per frame */
|
|
AVRational time_base; /* 1/framerate */
|
|
int ltc_divisor; /* FPS from the LTS standpoint */
|
|
int height; /* picture height in pixels */
|
|
int width; /* picture width in pixels */
|
|
AVRational sar[2]; /* sample aspect ratios for 4:3 and 16:9 */
|
|
DVwork_chunk *work_chunks; /* each thread gets its own chunk of frame to work on */
|
|
uint32_t *idct_factor; /* set of iDCT factor tables */
|
|
enum PixelFormat pix_fmt; /* picture pixel format */
|
|
int bpm; /* blocks per macroblock */
|
|
const uint8_t *block_sizes; /* AC block sizes, in bits */
|
|
int audio_stride; /* size of audio_shuffle table */
|
|
int audio_min_samples[3]; /* min amount of audio samples */
|
|
/* for 48kHz, 44.1kHz and 32kHz */
|
|
int audio_samples_dist[5]; /* how many samples are supposed to be */
|
|
/* in each frame in a 5 frames window */
|
|
const uint8_t (*audio_shuffle)[9]; /* PCM shuffling table */
|
|
} DVprofile;
|
|
|
|
enum dv_section_type {
|
|
dv_sect_header = 0x1f,
|
|
dv_sect_subcode = 0x3f,
|
|
dv_sect_vaux = 0x56,
|
|
dv_sect_audio = 0x76,
|
|
dv_sect_video = 0x96,
|
|
};
|
|
|
|
enum dv_pack_type {
|
|
dv_header525 = 0x3f, /* see dv_write_pack for important details on */
|
|
dv_header625 = 0xbf, /* these two packs */
|
|
dv_timecode = 0x13,
|
|
dv_audio_source = 0x50,
|
|
dv_audio_control = 0x51,
|
|
dv_audio_recdate = 0x52,
|
|
dv_audio_rectime = 0x53,
|
|
dv_video_source = 0x60,
|
|
dv_video_control = 0x61,
|
|
dv_video_recdate = 0x62,
|
|
dv_video_rectime = 0x63,
|
|
dv_unknown_pack = 0xff,
|
|
};
|
|
|
|
#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
|
|
#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
|
|
#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))
|
|
|
|
/* minimum number of bytes to read from a DV stream in order to
|
|
determine the profile */
|
|
#define DV_PROFILE_BYTES (6*80) /* 6 DIF blocks */
|
|
|
|
/**
|
|
* largest possible DV frame, in bytes (1080i50)
|
|
*/
|
|
#define DV_MAX_FRAME_SIZE 576000
|
|
|
|
/**
|
|
* maximum number of blocks per macroblock in any DV format
|
|
*/
|
|
#define DV_MAX_BPM 8
|
|
|
|
const DVprofile* avpriv_dv_frame_profile(const DVprofile *sys,
|
|
const uint8_t* frame, unsigned buf_size);
|
|
const DVprofile* avpriv_dv_frame_profile2(AVCodecContext* codec, const DVprofile *sys,
|
|
const uint8_t* frame, unsigned buf_size);
|
|
const DVprofile* avpriv_dv_codec_profile(AVCodecContext* codec);
|
|
|
|
#endif /* AVCODEC_DVDATA_H */
|