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cdxl: fix audio for some samples 

There may be extra padding at and of chunk.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
This commit is contained in:
Paul B Mahol 2012-02-16 21:48:57 +00:00 committed by Justin Ruggles
parent f02edc4c06
commit 6d10c5bfc0
1 changed files with 11 additions and 7 deletions
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18
libavformat/cdxl.c
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@ -62,9 +62,8 @@ static int cdxl_read_packet(AVFormatContext *s, AVPacket *pkt)
{
CDXLDemuxContext *cdxl = s->priv_data;
AVIOContext *pb = s->pb;
uint32_t current_size;
uint16_t audio_size, palette_size;
int32_t video_size;
uint32_t current_size, video_size, image_size;
uint16_t audio_size, palette_size, width, height;
int64_t pos;
int ret;
@ -81,14 +80,17 @@ static int cdxl_read_packet(AVFormatContext *s, AVPacket *pkt)
}
current_size = AV_RB32(&cdxl->header[2]);
width = AV_RB16(&cdxl->header[14]);
height = AV_RB16(&cdxl->header[16]);
palette_size = AV_RB16(&cdxl->header[20]);
audio_size = AV_RB16(&cdxl->header[22]);
image_size = FFALIGN(width, 16) * height * cdxl->header[19] / 8;
video_size = palette_size + image_size;
if (palette_size > 512)
return AVERROR_INVALIDDATA;
if (current_size < audio_size + palette_size + CDXL_HEADER_SIZE)
if (current_size < (uint64_t)audio_size + video_size + CDXL_HEADER_SIZE)
return AVERROR_INVALIDDATA;
video_size = current_size - audio_size - CDXL_HEADER_SIZE;
if (cdxl->read_chunk && audio_size) {
if (cdxl->audio_stream_index == -1) {
@ -121,8 +123,8 @@ static int cdxl_read_packet(AVFormatContext *s, AVPacket *pkt)
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_tag = 0;
st->codec->codec_id = CODEC_ID_CDXL;
st->codec->width = AV_RB16(&cdxl->header[14]);
st->codec->height = AV_RB16(&cdxl->header[16]);
st->codec->width = width;
st->codec->height = height;
cdxl->video_stream_index = st->index;
avpriv_set_pts_info(st, 63, cdxl->fps.den, cdxl->fps.num);
}
@ -141,6 +143,8 @@ static int cdxl_read_packet(AVFormatContext *s, AVPacket *pkt)
cdxl->read_chunk = audio_size;
}
if (!cdxl->read_chunk)
avio_skip(pb, current_size - audio_size - video_size - CDXL_HEADER_SIZE);
return ret;
}