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rv20 (h263) b frame decoding support

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Originally committed as revision 2561 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2003-12-04 18:34:47 +00:00
parent 6952f12338
commit b40cd4e0e4
7 changed files with 321 additions and 63 deletions
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43
libavcodec/h263data.h
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@@ -29,6 +29,49 @@ const uint8_t inter_MCBPC_bits[28] = {
11, 13, 13, 13,/* inter4Q*/
};
static const uint8_t h263_mbtype_b_tab[15][2] = {
{1, 1},
{3, 3},
{1, 5},
{4, 4},
{5, 4},
{6, 6},
{2, 4},
{3, 4},
{7, 6},
{4, 6},
{5, 6},
{1, 6},
{1,10},
{1, 7},
{1, 8},
};
static const int h263_mb_type_b_map[15]= {
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_DIRECT2 | MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0,
MB_TYPE_L0 | MB_TYPE_CBP,
MB_TYPE_L0 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L1,
MB_TYPE_L1 | MB_TYPE_CBP,
MB_TYPE_L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_CBP,
MB_TYPE_L0L1 | MB_TYPE_CBP | MB_TYPE_QUANT,
0, //stuffing
MB_TYPE_INTRA | MB_TYPE_CBP,
MB_TYPE_INTRA | MB_TYPE_CBP | MB_TYPE_QUANT,
};
const uint8_t cbpc_b_tab[4][2] = {
{0, 1},
{2, 2},
{7, 3},
{6, 3},
};
const uint8_t cbpy_tab[16][2] =
{
{3,4}, {5,5}, {4,5}, {9,4}, {3,5}, {7,4}, {2,6}, {11,4},