diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2005-03-05 03:36:32 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2005-03-05 03:36:32 +0000 |
| commit | 8c787559a2cd9ac02b5b3f561cc1bc25ef3b3a59 (patch) | |
| tree | 5330eb8c40ea9ef1f368a848eb453c1424c01476 /libavcodec | |
| parent | a18030bb622872aa46cf82ed4094fa178e1d1635 (diff) | |
mpeg-es bitrate parsing
Originally committed as revision 4005 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/parser.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/libavcodec/parser.c b/libavcodec/parser.c index 421a95f039..331589585f 100644 --- a/libavcodec/parser.c +++ b/libavcodec/parser.c @@ -292,7 +292,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s, int frame_rate_index, ext_type, bytes_left; int frame_rate_ext_n, frame_rate_ext_d; int picture_structure, top_field_first, repeat_first_field, progressive_frame; - int horiz_size_ext, vert_size_ext; + int horiz_size_ext, vert_size_ext, bit_rate_ext; s->repeat_pict = 0; buf_end = buf + buf_size; @@ -306,13 +306,14 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s, } break; case SEQ_START_CODE: - if (bytes_left >= 4) { + if (bytes_left >= 7) { pc->width = (buf[0] << 4) | (buf[1] >> 4); pc->height = ((buf[1] & 0x0f) << 8) | buf[2]; avcodec_set_dimensions(avctx, pc->width, pc->height); frame_rate_index = buf[3] & 0xf; pc->frame_rate = avctx->frame_rate = frame_rate_tab[frame_rate_index]; avctx->frame_rate_base = MPEG1_FRAME_RATE_BASE; + avctx->bit_rate = ((buf[4]<<10) | (buf[5]<<2) | (buf[6]>>6))*400; avctx->codec_id = CODEC_ID_MPEG1VIDEO; avctx->sub_id = 1; } @@ -325,6 +326,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s, if (bytes_left >= 6) { horiz_size_ext = ((buf[1] & 1) << 1) | (buf[2] >> 7); vert_size_ext = (buf[2] >> 5) & 3; + bit_rate_ext = ((buf[2] & 0x1F)<<7) | (buf[3]>>1); frame_rate_ext_n = (buf[5] >> 5) & 3; frame_rate_ext_d = (buf[5] & 0x1f); pc->progressive_sequence = buf[1] & (1 << 3); @@ -332,6 +334,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s, pc->width |=(horiz_size_ext << 12); pc->height |=( vert_size_ext << 12); + avctx->bit_rate += (bit_rate_ext << 18) * 400; avcodec_set_dimensions(avctx, pc->width, pc->height); avctx->frame_rate = pc->frame_rate * (frame_rate_ext_n + 1); avctx->frame_rate_base = MPEG1_FRAME_RATE_BASE * (frame_rate_ext_d + 1); |