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- samples from mplayer ftp in the "adv" profile seem to have profile=2,

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which isn't the advanced one; and indeed, using adv. profile parser fails.
Using normal parser works, and that's what is done
- attempt at taking care of stride for NORM2 bitplane decoding
- duplication of much code from msmpeg4.c; this code isn't yet used, but
goes down as far as the block layer (mainly Transform Type stuff, the
remains are wild editing without checking). Unusable yet, and lacks the AC
decoding (but a step further in bitstream parsing)
patch by anonymous

Originally committed as revision 3931 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
anonymous 2005-02-04 02:20:38 +00:00 committed by Michael Niedermayer
parent 44f1698a38
commit 7cc84d241b
2 changed files with 708 additions and 297 deletions
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945
libavcodec/vc9.c
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60
libavcodec/vc9data.h
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@ -6,9 +6,6 @@
#ifndef VC9DATA_H
#define VC9DATA_H
/* Set a method for reading VLC in NORM6 bitplane decoding */
#define VLC_NORM6_METH0D 1
/* bfraction is fractional, we scale to the GCD 3*5*7*8 = 840 */
const int16_t vc9_bfraction_lut[23] = {
420 /*1/2*/, 280 /*1/3*/, 560 /*2/3*/, 210 /*1/4*/,
@ -74,7 +71,6 @@ static const uint8_t vc9_norm2_bits[4] = {
1, 3, 3, 2
};
#if VLC_NORM6_METH0D == 1
static const uint16_t vc9_norm6_codes[64] = {
0x001, 0x002, 0x003, 0x000, 0x004, 0x001, 0x002, 0x047, 0x005, 0x003, 0x004, 0x04B, 0x005, 0x04D, 0x04E, 0x30E,
0x006, 0x006, 0x007, 0x053, 0x008, 0x055, 0x056, 0x30D, 0x009, 0x059, 0x05A, 0x30C, 0x05C, 0x30B, 0x30A, 0x037,
@ -155,39 +151,6 @@ static const uint8_t vc9_norm6_spec[64][5] = {
{62, 3, 5, 2, 4 },
{63, 3, 5, 1, 1 },
};
#endif
//Mechanical way, handling sparse/incomplete tables
#if VLC_NORM6_METH0D == 2
//(2,5) is VLC+FLC, (3,5) double VLC
static const uint8_t vc9_norm6_first[24][2] = {
{ 1, 1}, { 2, 4}, { 3, 4}, { 0, 8},
{ 4, 4}, { 1, 8}, { 2, 8}, { 5, 4},
{ 3, 8}, { 4, 8}, { 5, 8}, { 6, 4},
{ 6, 8}, { 7, 8}, { 8, 8}, { 9, 8},
{ 7, 4}, { 10, 8}, { 11, 8}, { 12, 8},
{ 13, 8}, { 14, 8}, { 2, 5}, { 3, 5}
};
static const uint8_t vc9_norm6_second[22][2] = {
{ 14, 8}, { 13, 8}, { 12, 8}, { 11, 8},
{ 10, 8}, { 7, 4}, { 9, 8}, { 8, 8},
{ 7, 8}, { 6, 8}, { 6, 4}, { 5, 8},
{ 4, 8}, { 3, 8}, { 5, 4}, { 2, 8},
{ 1, 8}, { 4, 4}, { 0, 8}, { 3, 4},
{ 2, 4}, { 1, 1}
};
static const uint8_t vc9_norm6_flc_val[20] = {
7, 11, 13, 14, 19, 21, 22, 25,
26, 28, 35, 37, 38, 41, 42, 44,
49, 50, 52, 56
};
static const uint8_t vc9_norm6_second_val[22] = {
15, 23, 27, 29, 30, 31, 39, 43,
45, 46, 47, 51, 53, 54, 55, 57,
58, 59, 60, 61, 62, 63
};
#endif
/* 4MV Block pattern VLC tables */
static const uint8_t vc9_4mv_block_pattern_codes[4][16] = {
@ -329,6 +292,29 @@ static const uint8_t vc9_ttmb_bits[3][16] = {
}
};
/* TTBLK (Transform Type per Block) tables */
static const uint8_t vc9_ttblk_codes[3][8] = {
{ 0, 1, 3, 5, 16, 17, 18, 19},
{ 3, 0, 1, 2, 3, 5, 8, 9},
{ 1, 0, 1, 4, 6, 7, 10, 11}
};
static const uint8_t vc9_ttblk_bits[3][8] = {
{ 2, 2, 2, 3, 5, 5, 5, 5},
{ 2, 3, 3, 3, 3, 3, 4, 4},
{ 2, 3, 3, 3, 3, 3, 4, 4}
};
/* SUBBLKPAT tables, p93-94, reordered */
static const uint8_t vc9_subblkpat_codes[3][15] = {
{ 14, 12, 7, 11, 9, 26, 2, 10, 27, 8, 0, 6, 1, 15, 1},
{ 14, 0, 8, 15, 10, 4, 23, 13, 5, 9, 25, 3, 24, 22, 1},
{ 5, 6, 2, 2, 8, 0, 28, 3, 1, 3, 29, 1, 19, 18, 15}
};
static const uint8_t vc9_subblkpat_bits[3][15] = {
{ 5, 5, 5, 5, 5, 6, 4, 5, 6, 5, 4, 5, 4, 5, 1},
{ 4, 3, 4, 4, 4, 5, 5, 4, 5, 4, 5, 4, 5, 5, 2},
{ 3, 3, 4, 3, 4, 5, 5, 3, 5, 4, 5, 4, 5, 5, 4}
};
/* MV differential tables, p265 */
static const uint16_t vc9_mv_diff_codes[4][73] = {