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-rw-r--r--libavcodec/adpcm.c141
1 files changed, 134 insertions, 7 deletions
diff --git a/libavcodec/adpcm.c b/libavcodec/adpcm.c
index 527d1a341d..cfde5f58b9 100644
--- a/libavcodec/adpcm.c
+++ b/libavcodec/adpcm.c
@@ -82,6 +82,11 @@ static const int8_t xa_adpcm_table[5][2] = {
{ 122, -60 }
};
+static const int16_t afc_coeffs[2][16] = {
+ { 0, 2048, 0, 1024, 4096, 3584, 3072, 4608, 4200, 4800, 5120, 2048, 1024, -1024, -1024, -2048 },
+ { 0, 0, 2048, 1024, -2048, -1536, -1024, -2560, -2248, -2300, -3072, -2048, -1024, 1024, 0, 0 }
+};
+
static const int16_t ea_adpcm_table[] = {
0, 240, 460, 392,
0, 0, -208, -220,
@@ -90,6 +95,128 @@ static const int16_t ea_adpcm_table[] = {
0, -1, -3, -4
};
+/*
+ * Dumped from the binaries:
+ * - FantasticJourney.exe - 0x794D2, DGROUP:0x47A4D2
+ * - BigRaceUSA.exe - 0x9B8AA, DGROUP:0x49C4AA
+ * - Timeshock!.exe - 0x8506A, DGROUP:0x485C6A
+ */
+static const int8_t ima_cunning_index_table[9] = {
+ -1, -1, -1, -1, 1, 2, 3, 4, -1
+};
+
+/*
+ * Dumped from the binaries:
+ * - FantasticJourney.exe - 0x79458, DGROUP:0x47A458
+ * - BigRaceUSA.exe - 0x9B830, DGROUP:0x49C430
+ * - Timeshock!.exe - 0x84FF0, DGROUP:0x485BF0
+ */
+static const int16_t ima_cunning_step_table[61] = {
+ 1, 1, 1, 1, 2, 2, 3, 3, 4, 5,
+ 6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
+ 32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
+ 192, 224, 256, 320, 384, 448, 512, 640, 768, 896,
+ 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120,
+ 6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0
+};
+
+static const int8_t adpcm_index_table2[4] = {
+ -1, 2,
+ -1, 2,
+};
+
+static const int8_t adpcm_index_table3[8] = {
+ -1, -1, 1, 2,
+ -1, -1, 1, 2,
+};
+
+static const int8_t adpcm_index_table5[32] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
+ -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
+};
+
+static const int8_t * const adpcm_index_tables[4] = {
+ &adpcm_index_table2[0],
+ &adpcm_index_table3[0],
+ &ff_adpcm_index_table[0],
+ &adpcm_index_table5[0],
+};
+
+static const int16_t mtaf_stepsize[32][16] = {
+ { 1, 5, 9, 13, 16, 20, 24, 28,
+ -1, -5, -9, -13, -16, -20, -24, -28, },
+ { 2, 6, 11, 15, 20, 24, 29, 33,
+ -2, -6, -11, -15, -20, -24, -29, -33, },
+ { 2, 7, 13, 18, 23, 28, 34, 39,
+ -2, -7, -13, -18, -23, -28, -34, -39, },
+ { 3, 9, 15, 21, 28, 34, 40, 46,
+ -3, -9, -15, -21, -28, -34, -40, -46, },
+ { 3, 11, 18, 26, 33, 41, 48, 56,
+ -3, -11, -18, -26, -33, -41, -48, -56, },
+ { 4, 13, 22, 31, 40, 49, 58, 67,
+ -4, -13, -22, -31, -40, -49, -58, -67, },
+ { 5, 16, 26, 37, 48, 59, 69, 80,
+ -5, -16, -26, -37, -48, -59, -69, -80, },
+ { 6, 19, 31, 44, 57, 70, 82, 95,
+ -6, -19, -31, -44, -57, -70, -82, -95, },
+ { 7, 22, 38, 53, 68, 83, 99, 114,
+ -7, -22, -38, -53, -68, -83, -99, -114, },
+ { 9, 27, 45, 63, 81, 99, 117, 135,
+ -9, -27, -45, -63, -81, -99, -117, -135, },
+ { 10, 32, 53, 75, 96, 118, 139, 161,
+ -10, -32, -53, -75, -96, -118, -139, -161, },
+ { 12, 38, 64, 90, 115, 141, 167, 193,
+ -12, -38, -64, -90, -115, -141, -167, -193, },
+ { 15, 45, 76, 106, 137, 167, 198, 228,
+ -15, -45, -76, -106, -137, -167, -198, -228, },
+ { 18, 54, 91, 127, 164, 200, 237, 273,
+ -18, -54, -91, -127, -164, -200, -237, -273, },
+ { 21, 65, 108, 152, 195, 239, 282, 326,
+ -21, -65, -108, -152, -195, -239, -282, -326, },
+ { 25, 77, 129, 181, 232, 284, 336, 388,
+ -25, -77, -129, -181, -232, -284, -336, -388, },
+ { 30, 92, 153, 215, 276, 338, 399, 461,
+ -30, -92, -153, -215, -276, -338, -399, -461, },
+ { 36, 109, 183, 256, 329, 402, 476, 549,
+ -36, -109, -183, -256, -329, -402, -476, -549, },
+ { 43, 130, 218, 305, 392, 479, 567, 654,
+ -43, -130, -218, -305, -392, -479, -567, -654, },
+ { 52, 156, 260, 364, 468, 572, 676, 780,
+ -52, -156, -260, -364, -468, -572, -676, -780, },
+ { 62, 186, 310, 434, 558, 682, 806, 930,
+ -62, -186, -310, -434, -558, -682, -806, -930, },
+ { 73, 221, 368, 516, 663, 811, 958, 1106,
+ -73, -221, -368, -516, -663, -811, -958, -1106, },
+ { 87, 263, 439, 615, 790, 966, 1142, 1318,
+ -87, -263, -439, -615, -790, -966, -1142, -1318, },
+ { 104, 314, 523, 733, 942, 1152, 1361, 1571,
+ -104, -314, -523, -733, -942, -1152, -1361, -1571, },
+ { 124, 374, 623, 873, 1122, 1372, 1621, 1871,
+ -124, -374, -623, -873, -1122, -1372, -1621, -1871, },
+ { 148, 445, 743, 1040, 1337, 1634, 1932, 2229,
+ -148, -445, -743, -1040, -1337, -1634, -1932, -2229, },
+ { 177, 531, 885, 1239, 1593, 1947, 2301, 2655,
+ -177, -531, -885, -1239, -1593, -1947, -2301, -2655, },
+ { 210, 632, 1053, 1475, 1896, 2318, 2739, 3161,
+ -210, -632, -1053, -1475, -1896, -2318, -2739, -3161, },
+ { 251, 753, 1255, 1757, 2260, 2762, 3264, 3766,
+ -251, -753, -1255, -1757, -2260, -2762, -3264, -3766, },
+ { 299, 897, 1495, 2093, 2692, 3290, 3888, 4486,
+ -299, -897, -1495, -2093, -2692, -3290, -3888, -4486, },
+ { 356, 1068, 1781, 2493, 3206, 3918, 4631, 5343,
+ -356, -1068, -1781, -2493, -3206, -3918, -4631, -5343, },
+ { 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
+ -424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
+};
+
+static const int16_t oki_step_table[49] = {
+ 16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
+ 41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
+ 107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
+ 279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
+ 724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
+};
+
// padded to zero where table size is less then 16
static const int8_t swf_index_tables[4][16] = {
/*2*/ { -1, 2 },
@@ -335,8 +462,8 @@ static inline int16_t adpcm_ima_cunning_expand_nibble(ADPCMChannelStatus *c, int
nibble = sign_extend(nibble & 0xF, 4);
- step = ff_adpcm_ima_cunning_step_table[c->step_index];
- step_index = c->step_index + ff_adpcm_ima_cunning_index_table[abs(nibble)];
+ step = ima_cunning_step_table[c->step_index];
+ step_index = c->step_index + ima_cunning_index_table[abs(nibble)];
step_index = av_clip(step_index, 0, 60);
predictor = c->predictor + step * nibble;
@@ -354,7 +481,7 @@ static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitC
shift = bps - 1;
nibble = get_bits_le(gb, bps),
step = ff_adpcm_step_table[c->step_index];
- step_index = c->step_index + ff_adpcm_index_tables[bps - 2][nibble];
+ step_index = c->step_index + adpcm_index_tables[bps - 2][nibble];
step_index = av_clip(step_index, 0, 88);
sign = nibble & (1 << shift);
@@ -419,7 +546,7 @@ static inline int16_t adpcm_ima_oki_expand_nibble(ADPCMChannelStatus *c, int nib
{
int step_index, predictor, sign, delta, diff, step;
- step = ff_adpcm_oki_step_table[c->step_index];
+ step = oki_step_table[c->step_index];
step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
step_index = av_clip(step_index, 0, 48);
@@ -493,7 +620,7 @@ static inline int16_t adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, uint8_t
static inline int16_t adpcm_mtaf_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
{
- c->predictor += ff_adpcm_mtaf_stepsize[c->step][nibble];
+ c->predictor += mtaf_stepsize[c->step][nibble];
c->predictor = av_clip_int16(c->predictor);
c->step += ff_adpcm_index_table[nibble];
c->step = av_clip_uintp2(c->step, 5);
@@ -1836,8 +1963,8 @@ static int adpcm_decode_frame(AVCodecContext *avctx, void *data,
int byte = bytestream2_get_byteu(&gb);
int scale = 1 << (byte >> 4);
int index = byte & 0xf;
- int factor1 = ff_adpcm_afc_coeffs[0][index];
- int factor2 = ff_adpcm_afc_coeffs[1][index];
+ int factor1 = afc_coeffs[0][index];
+ int factor2 = afc_coeffs[1][index];
/* Decode 16 samples. */
for (int n = 0; n < 16; n++) {
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