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Minor cleanup

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bnnm 2019-08-12 20:13:53 +02:00
parent 9a4c80cdd5
commit d57b986523
2 changed files with 79 additions and 81 deletions
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8
src/coding/coding.h
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@ -109,10 +109,10 @@ void decode_ea_xas_v0(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspa
void decode_ea_xas_v1(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int channel); void decode_ea_xas_v1(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int channel);
/* sdx2_decoder */ /* sdx2_decoder */
void decode_sdx2(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do); void decode_sdx2(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do);
void decode_sdx2_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do); void decode_sdx2_int(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do);
void decode_cbd2(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do); void decode_cbd2(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do);
void decode_cbd2_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do); void decode_cbd2_int(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do);
/* ws_decoder */ /* ws_decoder */
void decode_ws(VGMSTREAM * vgmstream, int channel, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do); void decode_ws(VGMSTREAM * vgmstream, int channel, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do);

150
src/coding/sdx2_decoder.c
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@ -5,114 +5,112 @@
/* SDX2 - 2:1 Squareroot-delta-exact compression */ /* SDX2 - 2:1 Squareroot-delta-exact compression */
/* CBD2 - 2:1 Cuberoot-delta-exact compression (from the unreleased 3DO M2) */ /* CBD2 - 2:1 Cuberoot-delta-exact compression (from the unreleased 3DO M2) */
/* for (i=-128;i<128;i++) squares[i+128]=i<0?(-i*i)*2:(i*i)*2; */ /* for (i=-128;i<128;i++) { squares[i+128] = i<0?(-i*i)*2:(i*i)*2; } */
static int16_t squares[256] = { static int16_t squares[256] = {
-32768,-32258,-31752,-31250,-30752,-30258,-29768,-29282,-28800,-28322,-27848, -32768,-32258,-31752,-31250,-30752,-30258,-29768,-29282,-28800,-28322,-27848,
-27378,-26912,-26450,-25992,-25538,-25088,-24642,-24200,-23762,-23328,-22898, -27378,-26912,-26450,-25992,-25538,-25088,-24642,-24200,-23762,-23328,-22898,
-22472,-22050,-21632,-21218,-20808,-20402,-20000,-19602,-19208,-18818,-18432, -22472,-22050,-21632,-21218,-20808,-20402,-20000,-19602,-19208,-18818,-18432,
-18050,-17672,-17298,-16928,-16562,-16200,-15842,-15488,-15138,-14792,-14450, -18050,-17672,-17298,-16928,-16562,-16200,-15842,-15488,-15138,-14792,-14450,
-14112,-13778,-13448,-13122,-12800,-12482,-12168,-11858,-11552,-11250,-10952, -14112,-13778,-13448,-13122,-12800,-12482,-12168,-11858,-11552,-11250,-10952,
-10658,-10368,-10082, -9800, -9522, -9248, -8978, -8712, -8450, -8192, -7938, -10658,-10368,-10082, -9800, -9522, -9248, -8978, -8712, -8450, -8192, -7938,
-7688, -7442, -7200, -6962, -6728, -6498, -6272, -6050, -5832, -5618, -5408, -7688, -7442, -7200, -6962, -6728, -6498, -6272, -6050, -5832, -5618, -5408,
-5202, -5000, -4802, -4608, -4418, -4232, -4050, -3872, -3698, -3528, -3362, -5202, -5000, -4802, -4608, -4418, -4232, -4050, -3872, -3698, -3528, -3362,
-3200, -3042, -2888, -2738, -2592, -2450, -2312, -2178, -2048, -1922, -1800, -3200, -3042, -2888, -2738, -2592, -2450, -2312, -2178, -2048, -1922, -1800,
-1682, -1568, -1458, -1352, -1250, -1152, -1058, -968, -882, -800, -722, -1682, -1568, -1458, -1352, -1250, -1152, -1058, -968, -882, -800, -722,
-648, -578, -512, -450, -392, -338, -288, -242, -200, -162, -128, -648, -578, -512, -450, -392, -338, -288, -242, -200, -162, -128,
-98, -72, -50, -32, -18, -8, -2, 0, 2, 8, 18, -98, -72, -50, -32, -18, -8, -2, 0, 2, 8, 18,
32, 50, 72, 98, 128, 162, 200, 242, 288, 338, 392, 32, 50, 72, 98, 128, 162, 200, 242, 288, 338, 392,
450, 512, 578, 648, 722, 800, 882, 968, 1058, 1152, 1250, 450, 512, 578, 648, 722, 800, 882, 968, 1058, 1152, 1250,
1352, 1458, 1568, 1682, 1800, 1922, 2048, 2178, 2312, 2450, 2592, 1352, 1458, 1568, 1682, 1800, 1922, 2048, 2178, 2312, 2450, 2592,
2738, 2888, 3042, 3200, 3362, 3528, 3698, 3872, 4050, 4232, 4418, 2738, 2888, 3042, 3200, 3362, 3528, 3698, 3872, 4050, 4232, 4418,
4608, 4802, 5000, 5202, 5408, 5618, 5832, 6050, 6272, 6498, 6728, 4608, 4802, 5000, 5202, 5408, 5618, 5832, 6050, 6272, 6498, 6728,
6962, 7200, 7442, 7688, 7938, 8192, 8450, 8712, 8978, 9248, 9522, 6962, 7200, 7442, 7688, 7938, 8192, 8450, 8712, 8978, 9248, 9522,
9800, 10082, 10368, 10658, 10952, 11250, 11552, 11858, 12168, 12482, 12800, 9800, 10082, 10368, 10658, 10952, 11250, 11552, 11858, 12168, 12482, 12800,
13122, 13448, 13778, 14112, 14450, 14792, 15138, 15488, 15842, 16200, 16562, 13122, 13448, 13778, 14112, 14450, 14792, 15138, 15488, 15842, 16200, 16562,
16928, 17298, 17672, 18050, 18432, 18818, 19208, 19602, 20000, 20402, 20808, 16928, 17298, 17672, 18050, 18432, 18818, 19208, 19602, 20000, 20402, 20808,
21218, 21632, 22050, 22472, 22898, 23328, 23762, 24200, 24642, 25088, 25538, 21218, 21632, 22050, 22472, 22898, 23328, 23762, 24200, 24642, 25088, 25538,
25992, 26450, 26912, 27378, 27848, 28322, 28800, 29282, 29768, 30258, 30752, 25992, 26450, 26912, 27378, 27848, 28322, 28800, 29282, 29768, 30258, 30752,
31250, 31752, 32258 31250, 31752, 32258
}; };
//for (i=-128;i<128;i++) /* for (i=-128;i<128;i++) { double j = (i/2)/2.0; cubes[i+128] = floor(j*j*j); } */
//{ static int16_t cubes[256] = {
// double j = (i/2)/2.0; -32768,-31256,-31256,-29791,-29791,-28373,-28373,-27000,-27000,-25672,-25672,
// cubes[i+128]=floor(j*j*j); -24389,-24389,-23149,-23149,-21952,-21952,-20797,-20797,-19683,-19683,-18610,
//} -18610,-17576,-17576,-16581,-16581,-15625,-15625,-14706,-14706,-13824,-13824,
static int16_t cubes[256]={ -12978,-12978,-12167,-12167,-11391,-11391,-10648,-10648, -9938, -9938, -9261,
-32768,-31256,-31256,-29791,-29791,-28373,-28373,-27000,-27000,-25672,-25672, -9261, -8615, -8615, -8000, -8000, -7415, -7415, -6859, -6859, -6332, -6332,
-24389,-24389,-23149,-23149,-21952,-21952,-20797,-20797,-19683,-19683,-18610, -5832, -5832, -5359, -5359, -4913, -4913, -4492, -4492, -4096, -4096, -3724,
-18610,-17576,-17576,-16581,-16581,-15625,-15625,-14706,-14706,-13824,-13824, -3724, -3375, -3375, -3049, -3049, -2744, -2744, -2460, -2460, -2197, -2197,
-12978,-12978,-12167,-12167,-11391,-11391,-10648,-10648, -9938, -9938, -9261, -1953, -1953, -1728, -1728, -1521, -1521, -1331, -1331, -1158, -1158, -1000,
-9261, -8615, -8615, -8000, -8000, -7415, -7415, -6859, -6859, -6332, -6332, -1000, -857, -857, -729, -729, -614, -614, -512, -512, -422, -422,
-5832, -5832, -5359, -5359, -4913, -4913, -4492, -4492, -4096, -4096, -3724, -343, -343, -275, -275, -216, -216, -166, -166, -125, -125, -91,
-3724, -3375, -3375, -3049, -3049, -2744, -2744, -2460, -2460, -2197, -2197, -91, -64, -64, -43, -43, -27, -27, -16, -16, -8, -8,
-1953, -1953, -1728, -1728, -1521, -1521, -1331, -1331, -1158, -1158, -1000, -3, -3, -1, -1, 0, 0, 0, 0, 0, 0, 0,
-1000, -857, -857, -729, -729, -614, -614, -512, -512, -422, -422, 1, 1, 3, 3, 8, 8, 16, 16, 27, 27, 43,
-343, -343, -275, -275, -216, -216, -166, -166, -125, -125, -91, 43, 64, 64, 91, 91, 125, 125, 166, 166, 216, 216,
-91, -64, -64, -43, -43, -27, -27, -16, -16, -8, -8, 275, 275, 343, 343, 422, 422, 512, 512, 614, 614, 729,
-3, -3, -1, -1, 0, 0, 0, 0, 0, 0, 0, 729, 857, 857, 1000, 1000, 1158, 1158, 1331, 1331, 1521, 1521,
1, 1, 3, 3, 8, 8, 16, 16, 27, 27, 43, 1728, 1728, 1953, 1953, 2197, 2197, 2460, 2460, 2744, 2744, 3049,
43, 64, 64, 91, 91, 125, 125, 166, 166, 216, 216, 3049, 3375, 3375, 3724, 3724, 4096, 4096, 4492, 4492, 4913, 4913,
275, 275, 343, 343, 422, 422, 512, 512, 614, 614, 729, 5359, 5359, 5832, 5832, 6332, 6332, 6859, 6859, 7415, 7415, 8000,
729, 857, 857, 1000, 1000, 1158, 1158, 1331, 1331, 1521, 1521, 8000, 8615, 8615, 9261, 9261, 9938, 9938, 10648, 10648, 11391, 11391,
1728, 1728, 1953, 1953, 2197, 2197, 2460, 2460, 2744, 2744, 3049, 12167, 12167, 12978, 12978, 13824, 13824, 14706, 14706, 15625, 15625, 16581,
3049, 3375, 3375, 3724, 3724, 4096, 4096, 4492, 4492, 4913, 4913, 16581, 17576, 17576, 18610, 18610, 19683, 19683, 20797, 20797, 21952, 21952,
5359, 5359, 5832, 5832, 6332, 6332, 6859, 6859, 7415, 7415, 8000, 23149, 23149, 24389, 24389, 25672, 25672, 27000, 27000, 28373, 28373, 29791,
8000, 8615, 8615, 9261, 9261, 9938, 9938, 10648, 10648, 11391, 11391, 29791, 31256, 31256
12167, 12167, 12978, 12978, 13824, 13824, 14706, 14706, 15625, 15625, 16581, };
16581, 17576, 17576, 18610, 18610, 19683, 19683, 20797, 20797, 21952, 21952,
23149, 23149, 24389, 24389, 25672, 25672, 27000, 27000, 28373, 28373, 29791,
29791, 31256, 31256};
static void decode_delta_exact(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int16_t * table) {
int32_t hist = stream->adpcm_history1_32; static void decode_delta_exact(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int16_t * table) {
int32_t hist = stream->adpcm_history1_32;
int i; int i;
int32_t sample_count; int32_t sample_count = 0;
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) { for (i=first_sample; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
int8_t sample_byte = read_8bit(stream->offset+i,stream->streamfile); int8_t sample_byte = read_8bit(stream->offset+i,stream->streamfile);
int16_t sample; int16_t sample;
if (!(sample_byte & 1)) hist = 0; if (!(sample_byte & 1)) hist = 0;
sample = hist + table[sample_byte+128]; sample = hist + table[sample_byte+128];
hist = outbuf[sample_count] = clamp16(sample); hist = outbuf[sample_count] = clamp16(sample);
} }
stream->adpcm_history1_32=hist;
stream->adpcm_history1_32 = hist;
} }
static void decode_delta_exact_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int16_t * table) { static void decode_delta_exact_int(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do, int16_t * table) {
int32_t hist = stream->adpcm_history1_32;
int32_t hist = stream->adpcm_history1_32; int i;
int32_t sample_count = 0;
int i; for (i=first_sample; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
int32_t sample_count;
for (i=first_sample,sample_count=0; i<first_sample+samples_to_do; i++,sample_count+=channelspacing) {
int8_t sample_byte = read_8bit(stream->offset+i*channelspacing,stream->streamfile); int8_t sample_byte = read_8bit(stream->offset+i*channelspacing,stream->streamfile);
int16_t sample; int16_t sample;
if (!(sample_byte & 1)) hist = 0; if (!(sample_byte & 1)) hist = 0;
sample = hist + table[sample_byte+128]; sample = hist + table[sample_byte+128];
hist = outbuf[sample_count] = clamp16(sample); hist = outbuf[sample_count] = clamp16(sample);
} }
stream->adpcm_history1_32=hist;
stream->adpcm_history1_32 = hist;
} }
void decode_sdx2(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) { void decode_sdx2(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
decode_delta_exact(stream, outbuf, channelspacing, first_sample, samples_to_do, squares); decode_delta_exact(stream, outbuf, channelspacing, first_sample, samples_to_do, squares);
} }
void decode_sdx2_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) { void decode_sdx2_int(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
decode_delta_exact_int(stream, outbuf, channelspacing, first_sample, samples_to_do, squares); decode_delta_exact_int(stream, outbuf, channelspacing, first_sample, samples_to_do, squares);
} }
void decode_cbd2(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) { void decode_cbd2(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
decode_delta_exact(stream, outbuf, channelspacing, first_sample, samples_to_do, cubes); decode_delta_exact(stream, outbuf, channelspacing, first_sample, samples_to_do, cubes);
} }
void decode_cbd2_int(VGMSTREAMCHANNEL * stream, sample * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) { void decode_cbd2_int(VGMSTREAMCHANNEL * stream, sample_t * outbuf, int channelspacing, int32_t first_sample, int32_t samples_to_do) {
decode_delta_exact_int(stream, outbuf, channelspacing, first_sample, samples_to_do, cubes); decode_delta_exact_int(stream, outbuf, channelspacing, first_sample, samples_to_do, cubes);
} }