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Code Issues Releases Activity

avformat/rpl: Allow a file to have audio, but not video

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Signed-off-by: Cameron Cawley <ccawley2011@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Cameron Cawley 2019-06-14 20:51:34 +01:00 committed by Michael Niedermayer
parent dcf3f8b368
commit 1f8336fd98
1 changed files with 45 additions and 35 deletions
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80
libavformat/rpl.c
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@ -124,7 +124,7 @@ static int rpl_read_header(AVFormatContext *s)
uint32_t i;
int32_t audio_format, chunk_catalog_offset, number_of_chunks;
int32_t video_format, audio_format, chunk_catalog_offset, number_of_chunks;
AVRational fps;
char line[RPL_LINE_LENGTH];
@ -144,38 +144,46 @@ static int rpl_read_header(AVFormatContext *s)
av_dict_set(&s->metadata, "author" , line, 0);
// video headers
vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codecpar->codec_tag = read_line_and_int(pb, &error); // video format
vst->codecpar->width = read_line_and_int(pb, &error); // video width
vst->codecpar->height = read_line_and_int(pb, &error); // video height
vst->codecpar->bits_per_coded_sample = read_line_and_int(pb, &error); // video bits per sample
video_format = read_line_and_int(pb, &error);
if (video_format) {
vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codecpar->codec_tag = video_format;
vst->codecpar->width = read_line_and_int(pb, &error); // video width
vst->codecpar->height = read_line_and_int(pb, &error); // video height
vst->codecpar->bits_per_coded_sample = read_line_and_int(pb, &error); // video bits per sample
// Figure out the video codec
switch (vst->codecpar->codec_tag) {
#if 0
case 122:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE122;
break;
#endif
case 124:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE124;
// The header is wrong here, at least sometimes
vst->codecpar->bits_per_coded_sample = 16;
break;
case 130:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE130;
break;
default:
avpriv_report_missing_feature(s, "Video format %s",
av_fourcc2str(vst->codecpar->codec_tag));
vst->codecpar->codec_id = AV_CODEC_ID_NONE;
}
} else {
for (i = 0; i < 3; i++)
error |= read_line(pb, line, sizeof(line));
}
error |= read_line(pb, line, sizeof(line)); // video frames per second
fps = read_fps(line, &error);
avpriv_set_pts_info(vst, 32, fps.den, fps.num);
// Figure out the video codec
switch (vst->codecpar->codec_tag) {
#if 0
case 122:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE122;
break;
#endif
case 124:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE124;
// The header is wrong here, at least sometimes
vst->codecpar->bits_per_coded_sample = 16;
break;
case 130:
vst->codecpar->codec_id = AV_CODEC_ID_ESCAPE130;
break;
default:
avpriv_report_missing_feature(s, "Video format %s",
av_fourcc2str(vst->codecpar->codec_tag));
vst->codecpar->codec_id = AV_CODEC_ID_NONE;
}
if (vst)
avpriv_set_pts_info(vst, 32, fps.den, fps.num);
// Audio headers
@ -246,7 +254,7 @@ static int rpl_read_header(AVFormatContext *s)
}
rpl->frames_per_chunk = read_line_and_int(pb, &error); // video frames per chunk
if (rpl->frames_per_chunk > 1 && vst->codecpar->codec_tag != 124)
if (vst && rpl->frames_per_chunk > 1 && vst->codecpar->codec_tag != 124)
av_log(s, AV_LOG_WARNING,
"Don't know how to split frames for video format %s. "
"Video stream will be broken!\n", av_fourcc2str(vst->codecpar->codec_tag));
@ -261,7 +269,8 @@ static int rpl_read_header(AVFormatContext *s)
read_line_and_int(pb, &error); // (file index)
error |= read_line(pb, line, sizeof(line)); // offset to "helpful" sprite
error |= read_line(pb, line, sizeof(line)); // size of "helpful" sprite
error |= read_line(pb, line, sizeof(line)); // offset to key frame list
if (vst)
error |= read_line(pb, line, sizeof(line)); // offset to key frame list
// Read the index
avio_seek(pb, chunk_catalog_offset, SEEK_SET);
@ -274,8 +283,9 @@ static int rpl_read_header(AVFormatContext *s)
error = -1;
continue;
}
av_add_index_entry(vst, offset, i * rpl->frames_per_chunk,
video_size, rpl->frames_per_chunk, 0);
if (vst)
av_add_index_entry(vst, offset, i * rpl->frames_per_chunk,
video_size, rpl->frames_per_chunk, 0);
if (ast)
av_add_index_entry(ast, offset + video_size, total_audio_size,
audio_size, audio_size * 8, 0);