xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-24 12:09:55 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

theora alpha3 support (with maintaining backward compatibility, maybe we should remove all backward compatibility codes after final theora release?)

Browse Source 
Originally committed as revision 2527 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Alex Beregszaszi 2003-11-23 18:49:53 +00:00
parent 9a7ad92531
commit 105c3d2521
1 changed files with 15 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
libavcodec/vp3.c
View File

@ -2765,7 +2765,9 @@ static int vp3_decode_frame(AVCodecContext *avctx,
{
s->last_quality_index = s->quality_index;
s->quality_index = get_bits(&gb, 6);
if ( s->keyframe)
if (s->theora >= 0x030300)
skip_bits1(&gb);
if (s->keyframe)
{
if (get_bits1(&gb))
av_log(s->avctx, AV_LOG_ERROR, "Theora: warning, unsupported keyframe coding type?!\n");
@ -2924,9 +2926,12 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext gb)
av_log(avctx, AV_LOG_INFO, "Theora bitstream version %d.%d.%d\n",
major, minor, micro);
/* FIXME: endianess? */
s->theora = (major << 16) | (minor << 8) | micro;
/* 3.3.0 aka alpha3 has the same frame orientation as original vp3 */
/* but previous versions have the image flipped relative to vp3 */
if ((major <= 3) && (minor < 3))
if (s->theora < 0x030300)
{
s->flipped_image = 1;
av_log(avctx, AV_LOG_DEBUG, "Old (<alpha3) Theora bitstream, flipped image\n");
@ -2946,12 +2951,19 @@ static int theora_decode_header(AVCodecContext *avctx, GetBitContext gb)
skip_bits(&gb, 24); /* aspect numerator */
skip_bits(&gb, 24); /* aspect denumerator */
skip_bits(&gb, 5); /* keyframe frequency force */
if (s->theora < 0x030300)
skip_bits(&gb, 5); /* keyframe frequency force */
skip_bits(&gb, 8); /* colorspace */
skip_bits(&gb, 24); /* bitrate */
skip_bits(&gb, 6); /* last(?) quality index */
if (s->theora >= 0x030300)
{
skip_bits(&gb, 5); /* keyframe frequency force */
skip_bits(&gb, 5); /* spare bits */
}
// align_get_bits(&gb);
avctx->width = s->width;