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codecparsers: VC1: Handle interlaced frames properly

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This commit is contained in:
Thibault Saunier 2011-10-10 10:14:12 -03:00
parent 7a689b6805
commit 88766dc738
2 changed files with 99 additions and 26 deletions
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101
gst-libs/gst/codecparsers/gstvc1parser.c
View file

@ -994,6 +994,12 @@ parse_frame_header_advanced (GstBitReader * br, GstVC1FrameHdr * framehdr,
switch (framehdr->ptype) {
case GST_VC1_PICTURE_TYPE_I:
case GST_VC1_PICTURE_TYPE_BI:
if (pic->fcm == GST_VC1_FRAME_INTERLACE) {
if (!bitplane_decoding (br, bitplanes ? bitplanes->fieldtx : NULL,
seqhdr, &pic->fieldtx))
goto failed;
}
if (!bitplane_decoding (br, bitplanes ? bitplanes->acpred : NULL,
seqhdr, &pic->acpred))
goto failed;
@ -1032,7 +1038,14 @@ parse_frame_header_advanced (GstBitReader * br, GstVC1FrameHdr * framehdr,
else
pic->mvrange = 0;
READ_UINT8 (br, pic->mvmode, 1);
if (pic->fcm == GST_VC1_FRAME_INTERLACE) {
if (entrypthdr->extended_dmv)
pic->dmvrange = get_unary (br, 0, 3);
READ_UINT8 (br, pic->intcomp, 1);
} else {
READ_UINT8 (br, pic->mvmode, 1);
}
if (!bitplane_decoding (br, bitplanes ? bitplanes->directmb : NULL,
seqhdr, &pic->directmb))
@ -1042,8 +1055,20 @@ parse_frame_header_advanced (GstBitReader * br, GstVC1FrameHdr * framehdr,
seqhdr, &pic->skipmb))
goto failed;
READ_UINT8 (br, pic->mvtab, 2);
READ_UINT8 (br, pic->cbptab, 2);
if (pic->fcm == GST_VC1_FRAME_INTERLACE) {
if (gst_bit_reader_get_remaining (br) < 11)
goto failed;
pic->mbmodetab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->imvtab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->icbptab = gst_bit_reader_get_bits_uint8_unchecked (br, 3);
pic->mvbptab2 = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->mvbptab4 = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
} else {
READ_UINT8 (br, pic->mvtab, 2);
READ_UINT8 (br, pic->cbptab, 2);
}
if (framehdr->dquant) {
parse_vopdquant (br, framehdr, framehdr->dquant);
@ -1072,33 +1097,61 @@ parse_frame_header_advanced (GstBitReader * br, GstVC1FrameHdr * framehdr,
else
pic->mvrange = 0;
mvmodeidx = framehdr->pquant > 12;
pic->mvmode = vc1_mvmode_table[mvmodeidx][get_unary (br, 1, 4)];
if (pic->fcm == GST_VC1_FRAME_INTERLACE) {
if (entrypthdr->extended_dmv)
pic->dmvrange = get_unary (br, 0, 3);
if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) {
pic->mvmode2 = vc1_mvmode2_table[mvmodeidx][get_unary (br, 1, 3)];
READ_UINT8 (br, pic->lumscale, 6);
READ_UINT8 (br, pic->lumshift, 6);
GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift);
}
READ_UINT8 (br, pic->mvswitch4, 1);
READ_UINT8 (br, pic->intcomp, 1);
if (pic->mvmode == GST_VC1_MVMODE_MIXED_MV ||
(pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP &&
pic->mvmode2 == GST_VC1_MVMODE_MIXED_MV)) {
if (!bitplane_decoding (br, bitplanes ? bitplanes->mvtypemb : NULL,
seqhdr, &pic->mvtypemb))
goto failed;
GST_DEBUG ("mvtypemb %u", pic->mvtypemb);
if (pic->intcomp) {
READ_UINT8 (br, pic->lumscale, 6);
READ_UINT8 (br, pic->lumshift, 6);
}
} else {
mvmodeidx = framehdr->pquant > 12;
pic->mvmode = vc1_mvmode_table[mvmodeidx][get_unary (br, 1, 4)];
if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) {
pic->mvmode2 = vc1_mvmode2_table[mvmodeidx][get_unary (br, 1, 3)];
READ_UINT8 (br, pic->lumscale, 6);
READ_UINT8 (br, pic->lumshift, 6);
GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift);
}
if (pic->mvmode == GST_VC1_MVMODE_MIXED_MV ||
(pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP &&
pic->mvmode2 == GST_VC1_MVMODE_MIXED_MV)) {
if (!bitplane_decoding (br, bitplanes ? bitplanes->mvtypemb : NULL,
seqhdr, &pic->mvtypemb))
goto failed;
GST_DEBUG ("mvtypemb %u", pic->mvtypemb);
}
}
if (!bitplane_decoding (br, bitplanes ? bitplanes->skipmb : NULL,
seqhdr, &pic->skipmb))
goto failed;
if (gst_bit_reader_get_remaining (br) < 4)
goto failed;
pic->mvtab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->cbptab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
if (pic->fcm == GST_VC1_FRAME_INTERLACE) {
if (gst_bit_reader_get_remaining (br) < 9)
goto failed;
pic->mbmodetab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->imvtab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->icbptab = gst_bit_reader_get_bits_uint8_unchecked (br, 3);
pic->mvbptab2 = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
if (pic->mvswitch4)
READ_UINT8 (br, pic->mvbptab4, 2);
} else {
if (gst_bit_reader_get_remaining (br) < 4)
goto failed;
pic->mvtab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
pic->cbptab = gst_bit_reader_get_bits_uint8_unchecked (br, 2);
}
if (framehdr->dquant) {
parse_vopdquant (br, framehdr, framehdr->dquant);
@ -1891,6 +1944,7 @@ void
gst_vc1_bitplanes_free_1 (GstVC1BitPlanes * bitplanes)
{
g_free (bitplanes->acpred);
g_free (bitplanes->fieldtx);
g_free (bitplanes->overflags);
g_free (bitplanes->mvtypemb);
g_free (bitplanes->skipmb);
@ -1920,6 +1974,8 @@ gst_vc1_bitplanes_ensure_size (GstVC1BitPlanes * bitplanes,
bitplanes->size = seqhdr->mb_height * seqhdr->mb_stride;
bitplanes->acpred =
g_realloc_n (bitplanes->acpred, bitplanes->size, sizeof (guint8));
bitplanes->fieldtx =
g_realloc_n (bitplanes->fieldtx, bitplanes->size, sizeof (guint8));
bitplanes->overflags =
g_realloc_n (bitplanes->overflags, bitplanes->size, sizeof (guint8));
bitplanes->mvtypemb =
@ -1931,6 +1987,7 @@ gst_vc1_bitplanes_ensure_size (GstVC1BitPlanes * bitplanes,
} else {
bitplanes->size = seqhdr->mb_height * seqhdr->mb_stride;
bitplanes->acpred = g_malloc0 (bitplanes->size * sizeof (guint8));
bitplanes->fieldtx = g_malloc0 (bitplanes->size * sizeof (guint8));
bitplanes->overflags = g_malloc0 (bitplanes->size * sizeof (guint8));
bitplanes->mvtypemb = g_malloc0 (bitplanes->size * sizeof (guint8));
bitplanes->skipmb = g_malloc0 (bitplanes->size * sizeof (guint8));

24
gst-libs/gst/codecparsers/gstvc1parser.h
View file

@ -209,15 +209,15 @@ struct _GstVC1AdvancedSeqHdr
{
GstVC1Level level;
guint8 frmrtq_postproc;
guint8 bitrtq_postproc;
guint8 frmrtq_postproc;
guint8 bitrtq_postproc;
guint8 postprocflag;
guint16 max_coded_width;
guint16 max_coded_height;
guint8 pulldown;
guint8 interlace;
guint8 tfcntrflag;
guint8 finterpflag;
guint8 finterpflag;
guint8 psf;
guint8 display_ext;
guint16 disp_horiz_size;
@ -236,7 +236,7 @@ struct _GstVC1AdvancedSeqHdr
guint8 transfer_char;
guint8 matrix_coef;
guint8 hrd_param_flag;
guint8 colordiff_format;
guint8 colordiff_format;
GstVC1HrdParam hrd_param;
@ -426,11 +426,27 @@ struct _GstVC1PicAdvanced
guint8 mvtypemb;
guint8 skipmb;
guint8 directmb;
/* For interlaced pictures only */
guint8 fieldtx;
/* P and B pictures */
guint8 intcomp;
guint8 dmvrange;
guint8 mbmodetab;
guint8 imvtab;
guint8 icbptab;
guint8 mvbptab2;
guint8 mvbptab4; /* If 4mvswitch in ppic */
/* P picture */
guint8 mvswitch4;
};
struct _GstVC1BitPlanes
{
guint8 *acpred;
guint8 *fieldtx;
guint8 *overflags;
guint8 *mvtypemb;
guint8 *skipmb;