mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-12-05 01:56:41 +00:00
b008ac18bb
* qatar/master: docs: use -bsf:[vas] instead of -[vas]bsf. mpegaudiodec: Prevent premature clipping of mp3 input buffer. lavf: move the packet keyframe setting code. oggenc: free comment header for all codecs lcl: error out if uncompressed input buffer is smaller than framesize. mjpeg: abort decoding if packet is too large. golomb: use HAVE_BITS_REMAINING() macro to prevent infloop on EOF. get_bits: add HAVE_BITS_REMAINING macro. lavf/output-example: use new audio encoding API correctly. lavf/output-example: more proper usage of the new API. tiff: Prevent overreads in the type_sizes array. tiff: Make the TIFF_LONG and TIFF_SHORT types unsigned. apetag: do not leak memory if avio_read() fails apetag: propagate errors. SBR DSP x86: implement SSE sbr_hf_g_filt SBR DSP x86: implement SSE sbr_sum_square_sse SBR DSP: use intptr_t for the ixh parameter. Conflicts: doc/bitstream_filters.texi doc/examples/muxing.c doc/ffmpeg.texi libavcodec/golomb.h libavcodec/x86/Makefile libavformat/oggenc.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/*
|
|
* APE tag handling
|
|
* Copyright (c) 2007 Benjamin Zores <ben@geexbox.org>
|
|
* based upon libdemac from Dave Chapman.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/dict.h"
|
|
#include "avformat.h"
|
|
#include "apetag.h"
|
|
|
|
#define APE_TAG_VERSION 2000
|
|
#define APE_TAG_FOOTER_BYTES 32
|
|
#define APE_TAG_FLAG_CONTAINS_HEADER (1 << 31)
|
|
#define APE_TAG_FLAG_IS_HEADER (1 << 29)
|
|
#define APE_TAG_FLAG_IS_BINARY (1 << 1)
|
|
|
|
static int ape_tag_read_field(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
uint8_t key[1024], *value;
|
|
uint32_t size, flags;
|
|
int i, c;
|
|
|
|
size = avio_rl32(pb); /* field size */
|
|
flags = avio_rl32(pb); /* field flags */
|
|
for (i = 0; i < sizeof(key) - 1; i++) {
|
|
c = avio_r8(pb);
|
|
if (c < 0x20 || c > 0x7E)
|
|
break;
|
|
else
|
|
key[i] = c;
|
|
}
|
|
key[i] = 0;
|
|
if (c != 0) {
|
|
av_log(s, AV_LOG_WARNING, "Invalid APE tag key '%s'.\n", key);
|
|
return -1;
|
|
}
|
|
if (size >= UINT_MAX)
|
|
return -1;
|
|
if (flags & APE_TAG_FLAG_IS_BINARY) {
|
|
uint8_t filename[1024];
|
|
AVStream *st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
avio_get_str(pb, INT_MAX, filename, sizeof(filename));
|
|
st->codec->extradata = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
|
|
if (!st->codec->extradata)
|
|
return AVERROR(ENOMEM);
|
|
if (avio_read(pb, st->codec->extradata, size) != size) {
|
|
av_freep(&st->codec->extradata);
|
|
return AVERROR(EIO);
|
|
}
|
|
st->codec->extradata_size = size;
|
|
av_dict_set(&st->metadata, key, filename, 0);
|
|
st->codec->codec_type = AVMEDIA_TYPE_ATTACHMENT;
|
|
} else {
|
|
value = av_malloc(size+1);
|
|
if (!value)
|
|
return AVERROR(ENOMEM);
|
|
c = avio_read(pb, value, size);
|
|
if (c < 0) {
|
|
av_free(value);
|
|
return c;
|
|
}
|
|
value[c] = 0;
|
|
av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void ff_ape_parse_tag(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
int file_size = avio_size(pb);
|
|
uint32_t val, fields, tag_bytes;
|
|
uint8_t buf[8];
|
|
int i;
|
|
|
|
if (file_size < APE_TAG_FOOTER_BYTES)
|
|
return;
|
|
|
|
avio_seek(pb, file_size - APE_TAG_FOOTER_BYTES, SEEK_SET);
|
|
|
|
avio_read(pb, buf, 8); /* APETAGEX */
|
|
if (strncmp(buf, "APETAGEX", 8)) {
|
|
return;
|
|
}
|
|
|
|
val = avio_rl32(pb); /* APE tag version */
|
|
if (val > APE_TAG_VERSION) {
|
|
av_log(s, AV_LOG_ERROR, "Unsupported tag version. (>=%d)\n", APE_TAG_VERSION);
|
|
return;
|
|
}
|
|
|
|
tag_bytes = avio_rl32(pb); /* tag size */
|
|
if (tag_bytes - APE_TAG_FOOTER_BYTES > (1024 * 1024 * 16)) {
|
|
av_log(s, AV_LOG_ERROR, "Tag size is way too big\n");
|
|
return;
|
|
}
|
|
|
|
fields = avio_rl32(pb); /* number of fields */
|
|
if (fields > 65536) {
|
|
av_log(s, AV_LOG_ERROR, "Too many tag fields (%d)\n", fields);
|
|
return;
|
|
}
|
|
|
|
val = avio_rl32(pb); /* flags */
|
|
if (val & APE_TAG_FLAG_IS_HEADER) {
|
|
av_log(s, AV_LOG_ERROR, "APE Tag is a header\n");
|
|
return;
|
|
}
|
|
|
|
avio_seek(pb, file_size - tag_bytes, SEEK_SET);
|
|
|
|
for (i=0; i<fields; i++)
|
|
if (ape_tag_read_field(s) < 0) break;
|
|
}
|