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ffmpeg.wasm-core
Commit 3c715383 authored by Diego Biurrun's avatar Diego Biurrun
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vc1: Move init code shared between decoder and parser to common code file. 

This fixes standalone compilation of the VC-1 parser.
parent 1e9d55e4
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Showing with 375 additions and 369 deletions
libavcodec/vc1.c
View file @ 3c715383
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libavcodec/vc1.h
View file @ 3c715383
......@@ -28,6 +28,8 @@
#include "intrax8.h"
#include "vc1dsp.h"
#define AC_VLC_BITS 9
/** Markers used in VC-1 AP frame data */
//@{
enum VC1Code {
......
libavcodec/vc1acdata.h
View file @ 3c715383
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libavcodec/vc1data.c
View file @ 3c715383
......@@ -1129,3 +1129,7 @@ const uint16_t ff_vc1_b_field_mvpred_scales[7][4] = {
{ 26, 17, 12, 10 }, // ZONE1OFFSET_X
{ 7, 4, 3, 3 } // ZONE1OFFSET_Y
};
const int ff_vc1_ac_sizes[AC_MODES] = {
186, 169, 133, 149, 103, 103, 163, 175
};
libavcodec/vc1data.h
View file @ 3c715383
......@@ -200,4 +200,9 @@ extern const int32_t ff_vc1_dqscale[63];
extern const uint16_t ff_vc1_field_mvpred_scales[2][7][4];
/* B Interlaced field picture backward MV predictor scaling values for first field (Table 115) */
extern const uint16_t ff_vc1_b_field_mvpred_scales[7][4];
#define AC_MODES 8
extern const int ff_vc1_ac_sizes[AC_MODES];
#endif /* AVCODEC_VC1DATA_H */
libavcodec/vc1dec.c
View file @ 3c715383
......@@ -45,154 +45,12 @@
#define MB_INTRA_VLC_BITS 9
#define DC_VLC_BITS 9
#define AC_VLC_BITS 9
static const uint16_t vlc_offs[] = {
0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436,
2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8342,
9304, 9988, 10630, 11234, 12174, 13006, 13560, 14232, 14786, 15432, 16350, 17522,
20372, 21818, 22330, 22394, 23166, 23678, 23742, 24820, 25332, 25396, 26460, 26980,
27048, 27592, 27600, 27608, 27616, 27624, 28224, 28258, 28290, 28802, 28834, 28866,
29378, 29412, 29444, 29960, 29994, 30026, 30538, 30572, 30604, 31120, 31154, 31186,
31714, 31746, 31778, 32306, 32340, 32372
};
// offset tables for interlaced picture MVDATA decoding
static const int offset_table1[9] = { 0, 1, 2, 4, 8, 16, 32, 64, 128 };
static const int offset_table2[9] = { 0, 1, 3, 7, 15, 31, 63, 127, 255 };
/**
* Init VC-1 specific tables and VC1Context members
* @param v The VC1Context to initialize
* @return Status
*/
int ff_vc1_init_common(VC1Context *v)
{
static int done = 0;
int i = 0;
static VLC_TYPE vlc_table[32372][2];
v->hrd_rate = v->hrd_buffer = NULL;
/* VLC tables */
if (!done) {
INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23,
ff_vc1_bfraction_bits, 1, 1,
ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS);
INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4,
ff_vc1_norm2_bits, 1, 1,
ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS);
INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64,
ff_vc1_norm6_bits, 1, 1,
ff_vc1_norm6_codes, 2, 2, 556);
INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7,
ff_vc1_imode_bits, 1, 1,
ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS);
for (i = 0; i < 3; i++) {
ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 0]];
ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i * 3 + 1] - vlc_offs[i * 3 + 0];
init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16,
ff_vc1_ttmb_bits[i], 1, 1,
ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 1]];
ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i * 3 + 2] - vlc_offs[i * 3 + 1];
init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8,
ff_vc1_ttblk_bits[i], 1, 1,
ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 2]];
ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i * 3 + 3] - vlc_offs[i * 3 + 2];
init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15,
ff_vc1_subblkpat_bits[i], 1, 1,
ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
}
for (i = 0; i < 4; i++) {
ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 9]];
ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i * 3 + 10] - vlc_offs[i * 3 + 9];
init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16,
ff_vc1_4mv_block_pattern_bits[i], 1, 1,
ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 10]];
ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i * 3 + 11] - vlc_offs[i * 3 + 10];
init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64,
ff_vc1_cbpcy_p_bits[i], 1, 1,
ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 11]];
ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i * 3 + 12] - vlc_offs[i * 3 + 11];
init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73,
ff_vc1_mv_diff_bits[i], 1, 1,
ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
}
for (i = 0; i < 8; i++) {
ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i * 2 + 21]];
ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i * 2 + 22] - vlc_offs[i * 2 + 21];
init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i],
&vc1_ac_tables[i][0][1], 8, 4,
&vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC);
/* initialize interlaced MVDATA tables (2-Ref) */
ff_vc1_2ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 2 + 22]];
ff_vc1_2ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 2 + 23] - vlc_offs[i * 2 + 22];
init_vlc(&ff_vc1_2ref_mvdata_vlc[i], VC1_2REF_MVDATA_VLC_BITS, 126,
ff_vc1_2ref_mvdata_bits[i], 1, 1,
ff_vc1_2ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
}
for (i = 0; i < 4; i++) {
/* initialize 4MV MBMODE VLC tables for interlaced frame P picture */
ff_vc1_intfr_4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 37]];
ff_vc1_intfr_4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 38] - vlc_offs[i * 3 + 37];
init_vlc(&ff_vc1_intfr_4mv_mbmode_vlc[i], VC1_INTFR_4MV_MBMODE_VLC_BITS, 15,
ff_vc1_intfr_4mv_mbmode_bits[i], 1, 1,
ff_vc1_intfr_4mv_mbmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
/* initialize NON-4MV MBMODE VLC tables for the same */
ff_vc1_intfr_non4mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 38]];
ff_vc1_intfr_non4mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 39] - vlc_offs[i * 3 + 38];
init_vlc(&ff_vc1_intfr_non4mv_mbmode_vlc[i], VC1_INTFR_NON4MV_MBMODE_VLC_BITS, 9,
ff_vc1_intfr_non4mv_mbmode_bits[i], 1, 1,
ff_vc1_intfr_non4mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
/* initialize interlaced MVDATA tables (1-Ref) */
ff_vc1_1ref_mvdata_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 39]];
ff_vc1_1ref_mvdata_vlc[i].table_allocated = vlc_offs[i * 3 + 40] - vlc_offs[i * 3 + 39];
init_vlc(&ff_vc1_1ref_mvdata_vlc[i], VC1_1REF_MVDATA_VLC_BITS, 72,
ff_vc1_1ref_mvdata_bits[i], 1, 1,
ff_vc1_1ref_mvdata_codes[i], 4, 4, INIT_VLC_USE_NEW_STATIC);
}
for (i = 0; i < 4; i++) {
/* Initialize 2MV Block pattern VLC tables */
ff_vc1_2mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i + 49]];
ff_vc1_2mv_block_pattern_vlc[i].table_allocated = vlc_offs[i + 50] - vlc_offs[i + 49];
init_vlc(&ff_vc1_2mv_block_pattern_vlc[i], VC1_2MV_BLOCK_PATTERN_VLC_BITS, 4,
ff_vc1_2mv_block_pattern_bits[i], 1, 1,
ff_vc1_2mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
}
for (i = 0; i < 8; i++) {
/* Initialize interlaced CBPCY VLC tables (Table 124 - Table 131) */
ff_vc1_icbpcy_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 53]];
ff_vc1_icbpcy_vlc[i].table_allocated = vlc_offs[i * 3 + 54] - vlc_offs[i * 3 + 53];
init_vlc(&ff_vc1_icbpcy_vlc[i], VC1_ICBPCY_VLC_BITS, 63,
ff_vc1_icbpcy_p_bits[i], 1, 1,
ff_vc1_icbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);
/* Initialize interlaced field picture MBMODE VLC tables */
ff_vc1_if_mmv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 54]];
ff_vc1_if_mmv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 55] - vlc_offs[i * 3 + 54];
init_vlc(&ff_vc1_if_mmv_mbmode_vlc[i], VC1_IF_MMV_MBMODE_VLC_BITS, 8,
ff_vc1_if_mmv_mbmode_bits[i], 1, 1,
ff_vc1_if_mmv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
ff_vc1_if_1mv_mbmode_vlc[i].table = &vlc_table[vlc_offs[i * 3 + 55]];
ff_vc1_if_1mv_mbmode_vlc[i].table_allocated = vlc_offs[i * 3 + 56] - vlc_offs[i * 3 + 55];
init_vlc(&ff_vc1_if_1mv_mbmode_vlc[i], VC1_IF_1MV_MBMODE_VLC_BITS, 6,
ff_vc1_if_1mv_mbmode_bits[i], 1, 1,
ff_vc1_if_1mv_mbmode_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
}
done = 1;
}
/* Other defaults */
v->pq = -1;
v->mvrange = 0; /* 7.1.1.18, p80 */
return 0;
}
/***********************************************************************/
/**
* @name VC-1 Bitplane decoding
......@@ -2620,7 +2478,7 @@ static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip,
int index, escape, run = 0, level = 0, lst = 0;
index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3);
if (index != vc1_ac_sizes[codingset] - 1) {
if (index != ff_vc1_ac_sizes[codingset] - 1) {
run = vc1_index_decode_table[codingset][index][0];
level = vc1_index_decode_table[codingset][index][1];
lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
......
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