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codecparsers: vc1: fix MVMODE and MVMODE2 parsing.

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Gwenole Beauchesne 2011-10-07 13:59:29 +02:00 committed by Thibault Saunier
parent b23f7eb38d
commit 4280a61a23
1 changed files with 22 additions and 21 deletions
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43
gst-libs/gst/codecparsers/gstvc1parser.c
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@ -119,32 +119,36 @@ const guint8 vc1_pquant_table[3][32] = {
14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31} 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 29, 31}
}; };
const guint8 mvmode_table[2][5] = { static const guint8 vc1_mvmode_table[2][5] = {
{ /* Table 47: P Picture High rate (PQUANT <= 12) MVMODE code table */
GST_VC1_MVMODE_1MV_HPEL_BILINEAR,
GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_MIXED_MV,
GST_VC1_MVMODE_INTENSITY_COMP},
{ {
GST_VC1_MVMODE_1MV, GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_MIXED_MV, GST_VC1_MVMODE_MIXED_MV,
GST_VC1_MVMODE_1MV_HPEL, GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_INTENSITY_COMP, GST_VC1_MVMODE_INTENSITY_COMP,
GST_VC1_MVMODE_1MV_HPEL_BILINEAR} GST_VC1_MVMODE_1MV_HPEL_BILINEAR},
}; /* Table 46: P Picture Low rate (PQUANT > 12) MVMODE code table */
const guint8 mvmode2_table[2][4] = {
{ {
GST_VC1_MVMODE_1MV_HPEL_BILINEAR, GST_VC1_MVMODE_1MV_HPEL_BILINEAR,
GST_VC1_MVMODE_1MV, GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_1MV_HPEL, GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_MIXED_MV}, GST_VC1_MVMODE_INTENSITY_COMP,
GST_VC1_MVMODE_MIXED_MV}
};
static const guint8 vc1_mvmode2_table[2][4] = {
/* Table 50: P Picture High rate (PQUANT <= 12) MVMODE2 code table */
{ {
GST_VC1_MVMODE_1MV, GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_MIXED_MV, GST_VC1_MVMODE_MIXED_MV,
GST_VC1_MVMODE_1MV_HPEL, GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_1MV_HPEL_BILINEAR} GST_VC1_MVMODE_1MV_HPEL_BILINEAR},
/* Table 49: P Picture Low rate (PQUANT > 12) MVMODE2 code table */
{
GST_VC1_MVMODE_1MV_HPEL_BILINEAR,
GST_VC1_MVMODE_1MV,
GST_VC1_MVMODE_1MV_HPEL,
GST_VC1_MVMODE_MIXED_MV}
}; };
/* Table 40: BFRACTION VLC Table */ /* Table 40: BFRACTION VLC Table */
@ -1056,15 +1060,13 @@ parse_frame_header_advanced (GstBitReader * br, GstVC1FrameHdr * framehdr,
else else
pic->mvrange = 0; pic->mvrange = 0;
mvmodeidx = framehdr->pquant > 12 ? 0 : 1; mvmodeidx = framehdr->pquant > 12;
pic->mvmode = mvmode_table[mvmodeidx][get_unary (br, 1, 4)]; pic->mvmode = vc1_mvmode_table[mvmodeidx][get_unary (br, 1, 4)];
if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) { if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) {
pic->mvmode2 = vc1_mvmode2_table[mvmodeidx][get_unary (br, 1, 3)];
pic->mvmode2 = mvmode2_table[mvmodeidx][get_unary (br, 1, 4)];
READ_UINT8 (br, pic->lumscale, 6); READ_UINT8 (br, pic->lumscale, 6);
READ_UINT8 (br, pic->lumshift, 6); READ_UINT8 (br, pic->lumshift, 6);
GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift); GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift);
} }
@ -1238,11 +1240,10 @@ parse_frame_header (GstBitReader * br, GstVC1FrameHdr * framehdr,
case GST_VC1_PICTURE_TYPE_P: case GST_VC1_PICTURE_TYPE_P:
mvmodeidx = framehdr->pquant > 12; mvmodeidx = framehdr->pquant > 12;
pic->mvmode = vc1_mvmode_table[mvmodeidx][get_unary (br, 1, 4)];
pic->mvmode = mvmode_table[mvmodeidx][get_unary (br, 1, 4)];
if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) { if (pic->mvmode == GST_VC1_MVMODE_INTENSITY_COMP) {
pic->mvmode2 = mvmode2_table[mvmodeidx][get_unary (br, 1, 4)]; pic->mvmode2 = vc1_mvmode2_table[mvmodeidx][get_unary (br, 1, 3)];
READ_UINT8 (br, pic->lumscale, 6); READ_UINT8 (br, pic->lumscale, 6);
READ_UINT8 (br, pic->lumshift, 6); READ_UINT8 (br, pic->lumshift, 6);
GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift); GST_DEBUG ("lumscale %u lumshift %u", pic->lumscale, pic->lumshift);