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codecparsers: VC1: Compute framerate and bitrate in simple/main profiles

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This commit is contained in:
Thibault Saunier 2011-10-05 08:26:31 -03:00
parent 2b5e7c1f0f
commit 446e0a5216
1 changed files with 29 additions and 23 deletions
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52
gst-libs/gst/codecparsers/gstvc1parser.c
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@ -564,6 +564,33 @@ get_unary (GstBitReader * br, gint stop, gint len)
return i;
}
static inline void
calculate_framerate_bitrate (GstVC1SeqHdr * seqhdr)
{
/* Calulate bitrate and framerate */
if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 30) {
seqhdr->framerate = 0;
seqhdr->bitrate = 0;
} else if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 30) {
seqhdr->framerate = 2;
seqhdr->bitrate = 1952;
} else if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 31) {
seqhdr->framerate = 6;
seqhdr->bitrate = 2016;
} else {
if (seqhdr->frmrtq_postproc == 7) {
seqhdr->framerate = 30;
} else {
seqhdr->framerate = 2 + (seqhdr->frmrtq_postproc * 4);
}
if (seqhdr->bitrtq_postproc == 31) {
seqhdr->bitrate = 2016;
} else {
seqhdr->bitrate = 32 + (seqhdr->bitrtq_postproc * 64);
}
}
}
static GstVC1ParserResult
parse_hrd_param_flag (GstBitReader * br, GstVC1HrdParam * hrd_param)
{
@ -612,34 +639,12 @@ parse_sequence_header_advanced (GstVC1SeqHdr * seqhdr, GstBitReader * br)
READ_UINT8 (br, seqhdr->colordiff_format, 2);
READ_UINT8 (br, seqhdr->frmrtq_postproc, 3);
READ_UINT8 (br, seqhdr->bitrtq_postproc, 5);
calculate_framerate_bitrate (seqhdr);
GST_DEBUG ("level %u, colordiff_format %u , frmrtq_postproc %u,"
" bitrtq_postproc %u", advanced->level, seqhdr->colordiff_format,
seqhdr->frmrtq_postproc, seqhdr->bitrtq_postproc);
/* Calulate bitrate and framerate */
if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 30) {
seqhdr->framerate = 0;
seqhdr->bitrate = 0;
} else if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 30) {
seqhdr->framerate = 2;
seqhdr->bitrate = 1952;
} else if (seqhdr->frmrtq_postproc == 0 && seqhdr->bitrtq_postproc == 31) {
seqhdr->framerate = 6;
seqhdr->bitrate = 2016;
} else {
if (seqhdr->frmrtq_postproc == 7) {
seqhdr->framerate = 30;
} else {
seqhdr->framerate = 2 + (seqhdr->frmrtq_postproc * 4);
}
if (seqhdr->bitrtq_postproc == 31) {
seqhdr->bitrate = 2016;
} else {
seqhdr->bitrate = 32 + (seqhdr->bitrtq_postproc * 64);
}
}
if (gst_bit_reader_get_remaining (br) < 32)
goto failed;
@ -1293,6 +1298,7 @@ gst_vc1_parse_sequence_header (const guint8 * data, gsize size,
seqhdr->frmrtq_postproc = gst_bit_reader_get_bits_uint8_unchecked (&br, 3);
seqhdr->bitrtq_postproc = gst_bit_reader_get_bits_uint8_unchecked (&br, 5);
simplehdr->loop_filter = gst_bit_reader_get_bits_uint8_unchecked (&br, 1);
calculate_framerate_bitrate (seqhdr);
/* Skipping reserved3 bit */
gst_bit_reader_skip_unchecked (&br, 1);