mirror of
https://github.com/ericonr/sndio.git
synced 2024-02-18 04:45:21 -06:00
move conversion code dsp.c
This commit is contained in:
parent
f3ef9df7b4
commit
1602b19c78
@ -245,7 +245,7 @@ slot_new(char *path, int mode, struct aparams *par, int hdr,
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case ENC_ALAW:
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case ENC_ALAW:
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log_puts("alaw");
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log_puts("alaw");
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break;
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break;
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case ENC_F32LE:
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case ENC_FLOAT:
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log_puts("f32le");
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log_puts("f32le");
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break;
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break;
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}
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}
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@ -308,16 +308,7 @@ slot_init(struct slot *s)
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0, dev_pchan - 1,
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0, dev_pchan - 1,
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0, dev_pchan - 1);
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0, dev_pchan - 1);
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if (s->wav.enc != ENC_PCM || !aparams_native(&s->wav.par)) {
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if (s->wav.enc != ENC_PCM || !aparams_native(&s->wav.par)) {
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switch (s->wav.enc) {
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dec_init(&s->conv, &s->wav.par, slot_nch);
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case ENC_PCM:
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dec_init(&s->conv, &s->wav.par, slot_nch);
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break;
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case ENC_ALAW:
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case ENC_ULAW:
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case ENC_F32LE:
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/* nothing */
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break;
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};
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s->convbuf =
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s->convbuf =
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xmalloc(s->round * slot_nch * sizeof(adata_t));
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xmalloc(s->round * slot_nch * sizeof(adata_t));
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}
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}
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@ -475,13 +466,13 @@ play_filt_dec(struct slot *s, void *in, void *out, int todo)
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dec_do(&s->conv, in, tmp, todo);
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dec_do(&s->conv, in, tmp, todo);
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break;
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break;
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case ENC_ULAW:
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case ENC_ULAW:
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wav_dec_ulaw(in, tmp, todo * s->wav.nch);
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dec_do_ulaw(&s->conv, in, tmp, todo);
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break;
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break;
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case ENC_ALAW:
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case ENC_ALAW:
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wav_dec_alaw(in, tmp, todo * s->wav.nch);
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dec_do_alaw(&s->conv, in, tmp, todo);
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break;
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break;
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case ENC_F32LE:
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case ENC_FLOAT:
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wav_dec_f32le(in, tmp, todo * s->wav.nch);
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dec_do_float(&s->conv, in, tmp, todo);
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break;
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break;
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}
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}
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}
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}
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183
aucat/dsp.c
183
aucat/dsp.c
@ -38,6 +38,76 @@ int aparams_ctltovol[128] = {
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26008, 27029, 28090, 29193, 30339, 31530, 32768
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26008, 27029, 28090, 29193, 30339, 31530, 32768
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};
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};
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short wav_ulawmap[256] = {
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-32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
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-23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
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-15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
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-11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
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|
-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
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-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
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-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
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-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
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-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
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-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
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-876, -844, -812, -780, -748, -716, -684, -652,
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-620, -588, -556, -524, -492, -460, -428, -396,
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-372, -356, -340, -324, -308, -292, -276, -260,
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-244, -228, -212, -196, -180, -164, -148, -132,
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-120, -112, -104, -96, -88, -80, -72, -64,
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-56, -48, -40, -32, -24, -16, -8, 0,
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32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
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|
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
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15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
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11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
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|
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
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5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
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3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
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|
2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
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|
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
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|
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
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|
876, 844, 812, 780, 748, 716, 684, 652,
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|
620, 588, 556, 524, 492, 460, 428, 396,
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|
372, 356, 340, 324, 308, 292, 276, 260,
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|
244, 228, 212, 196, 180, 164, 148, 132,
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120, 112, 104, 96, 88, 80, 72, 64,
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56, 48, 40, 32, 24, 16, 8, 0
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};
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short wav_alawmap[256] = {
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-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
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|
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
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|
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
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|
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
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|
-22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
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-30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
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-11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
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-15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
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-344, -328, -376, -360, -280, -264, -312, -296,
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-472, -456, -504, -488, -408, -392, -440, -424,
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-88, -72, -120, -104, -24, -8, -56, -40,
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|
-216, -200, -248, -232, -152, -136, -184, -168,
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|
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
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-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
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-688, -656, -752, -720, -560, -528, -624, -592,
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-944, -912, -1008, -976, -816, -784, -880, -848,
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5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
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7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
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2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
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3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
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22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
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30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
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11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
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15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
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|
344, 328, 376, 360, 280, 264, 312, 296,
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|
472, 456, 504, 488, 408, 392, 440, 424,
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|
88, 72, 120, 104, 24, 8, 56, 40,
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|
216, 200, 248, 232, 152, 136, 184, 168,
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|
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
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|
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
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|
688, 656, 752, 720, 560, 528, 624, 592,
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944, 912, 1008, 976, 816, 784, 880, 848
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};
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/*
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/*
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* Generate a string corresponding to the encoding in par,
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* Generate a string corresponding to the encoding in par,
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* return the length of the resulting string.
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* return the length of the resulting string.
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@ -522,6 +592,119 @@ dec_do(struct conv *p, unsigned char *in, unsigned char *out, int todo)
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}
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}
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}
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}
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/*
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* convert a 32-bit float to adata_t, clipping to -1:1, boundaries
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* excluded
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*/
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static inline int
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f32_to_adata(unsigned int x)
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{
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unsigned int s, e, m, y;
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s = (x >> 31);
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e = (x >> 23) & 0xff;
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m = (x << 8) | 0x80000000;
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if (e < 127 - 24)
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y = 0;
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else if (e > 127 - 1)
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y = ADATA_UNIT - 1;
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else
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y = m >> (127 + (32 - ADATA_BITS) - e);
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return (y ^ -s) + s;
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}
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/*
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* convert samples from little endian ieee 754 floats to adata_t
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*/
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void
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dec_do_float(struct conv *p, unsigned char *in, unsigned char *out, int todo)
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{
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unsigned int f;
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unsigned int i;
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unsigned int s = 0xdeadbeef;
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unsigned char *idata;
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int ibnext;
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int isnext;
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adata_t *odata;
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#ifdef DEBUG
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if (log_level >= 4) {
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log_puts("dec_float: copying ");
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log_putu(todo);
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log_puts(" frames\n");
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}
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#endif
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/*
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* Partially copy structures into local variables, to avoid
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* unnecessary indirections; this also allows the compiler to
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* order local variables more "cache-friendly".
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*/
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idata = in;
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odata = (adata_t *)out;
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ibnext = p->bnext;
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isnext = p->snext;
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/*
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* Start conversion.
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*/
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idata += p->bfirst;
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for (f = todo * p->nch; f > 0; f--) {
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for (i = 4; i > 0; i--) {
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s <<= 8;
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s |= *idata;
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idata += ibnext;
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}
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idata += isnext;
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*odata++ = f32_to_adata(s);
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}
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}
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/*
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* convert samples from ulaw to adata_t
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*/
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void
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dec_do_ulaw(struct conv *p, unsigned char *in, unsigned char *out, int todo)
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{
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unsigned int f;
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unsigned char *idata;
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adata_t *odata;
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#ifdef DEBUG
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if (log_level >= 4) {
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log_puts("dec_ulaw: copying ");
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log_putu(todo);
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log_puts(" frames\n");
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}
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#endif
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idata = in;
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odata = (adata_t *)out;
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for (f = todo * p->nch; f > 0; f--)
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*odata++ = wav_ulawmap[*idata++] << (ADATA_BITS - 16);
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}
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/*
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* convert samples from alaw to adata_t
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*/
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void
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dec_do_alaw(struct conv *p, unsigned char *in, unsigned char *out, int todo)
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{
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unsigned int f;
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unsigned char *idata;
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adata_t *odata;
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#ifdef DEBUG
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if (log_level >= 4) {
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log_puts("dec_alaw: copying ");
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log_putu(todo);
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log_puts(" frames\n");
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}
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#endif
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idata = in;
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odata = (adata_t *)out;
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for (f = todo * p->nch; f > 0; f--)
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*odata++ = wav_alawmap[*idata++] << (ADATA_BITS - 16);
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}
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/*
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/*
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* initialize decoder from foreign to native encoding
|
* initialize decoder from foreign to native encoding
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*/
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*/
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|
@ -153,6 +153,9 @@ void enc_do(struct conv *, unsigned char *, unsigned char *, int);
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void enc_sil_do(struct conv *, unsigned char *, int);
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void enc_sil_do(struct conv *, unsigned char *, int);
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void enc_init(struct conv *, struct aparams *, int);
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void enc_init(struct conv *, struct aparams *, int);
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void dec_do(struct conv *, unsigned char *, unsigned char *, int);
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void dec_do(struct conv *, unsigned char *, unsigned char *, int);
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void dec_do_float(struct conv *, unsigned char *, unsigned char *, int);
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void dec_do_alaw(struct conv *, unsigned char *, unsigned char *, int);
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void dec_do_ulaw(struct conv *, unsigned char *, unsigned char *, int);
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void dec_init(struct conv *, struct aparams *, int);
|
void dec_init(struct conv *, struct aparams *, int);
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void cmap_add(struct cmap *, void *, void *, int, int);
|
void cmap_add(struct cmap *, void *, void *, int, int);
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void cmap_copy(struct cmap *, void *, void *, int, int);
|
void cmap_copy(struct cmap *, void *, void *, int, int);
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|
133
aucat/wav.c
133
aucat/wav.c
@ -90,76 +90,6 @@ char wav_guid[14] = {
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0x9B, 0x71
|
0x9B, 0x71
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};
|
};
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|
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short wav_ulawmap[256] = {
|
|
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-32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
|
|
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-23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
|
|
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-15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
|
|
||||||
-11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
|
|
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-7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
|
|
||||||
-5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
|
|
||||||
-3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
|
|
||||||
-2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
|
|
||||||
-1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
|
|
||||||
-1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
|
|
||||||
-876, -844, -812, -780, -748, -716, -684, -652,
|
|
||||||
-620, -588, -556, -524, -492, -460, -428, -396,
|
|
||||||
-372, -356, -340, -324, -308, -292, -276, -260,
|
|
||||||
-244, -228, -212, -196, -180, -164, -148, -132,
|
|
||||||
-120, -112, -104, -96, -88, -80, -72, -64,
|
|
||||||
-56, -48, -40, -32, -24, -16, -8, 0,
|
|
||||||
32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
|
|
||||||
23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
|
|
||||||
15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
|
|
||||||
11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
|
|
||||||
7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
|
|
||||||
5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
|
|
||||||
3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
|
|
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2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
|
|
||||||
1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
|
|
||||||
1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
|
|
||||||
876, 844, 812, 780, 748, 716, 684, 652,
|
|
||||||
620, 588, 556, 524, 492, 460, 428, 396,
|
|
||||||
372, 356, 340, 324, 308, 292, 276, 260,
|
|
||||||
244, 228, 212, 196, 180, 164, 148, 132,
|
|
||||||
120, 112, 104, 96, 88, 80, 72, 64,
|
|
||||||
56, 48, 40, 32, 24, 16, 8, 0
|
|
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};
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|
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short wav_alawmap[256] = {
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|
||||||
-5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
|
|
||||||
-7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
|
|
||||||
-2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
|
|
||||||
-3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
|
|
||||||
-22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
|
|
||||||
-30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
|
|
||||||
-11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
|
|
||||||
-15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
|
|
||||||
-344, -328, -376, -360, -280, -264, -312, -296,
|
|
||||||
-472, -456, -504, -488, -408, -392, -440, -424,
|
|
||||||
-88, -72, -120, -104, -24, -8, -56, -40,
|
|
||||||
-216, -200, -248, -232, -152, -136, -184, -168,
|
|
||||||
-1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
|
|
||||||
-1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
|
|
||||||
-688, -656, -752, -720, -560, -528, -624, -592,
|
|
||||||
-944, -912, -1008, -976, -816, -784, -880, -848,
|
|
||||||
5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
|
|
||||||
7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
|
|
||||||
2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
|
|
||||||
3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
|
|
||||||
22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
|
|
||||||
30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
|
|
||||||
11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
|
|
||||||
15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
|
|
||||||
344, 328, 376, 360, 280, 264, 312, 296,
|
|
||||||
472, 456, 504, 488, 408, 392, 440, 424,
|
|
||||||
88, 72, 120, 104, 24, 8, 56, 40,
|
|
||||||
216, 200, 248, 232, 152, 136, 184, 168,
|
|
||||||
1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
|
|
||||||
1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
|
|
||||||
688, 656, 752, 720, 560, 528, 624, 592,
|
|
||||||
944, 912, 1008, 976, 816, 784, 880, 848
|
|
||||||
};
|
|
||||||
|
|
||||||
static inline unsigned int
|
static inline unsigned int
|
||||||
le16_get(le16_t *p)
|
le16_get(le16_t *p)
|
||||||
{
|
{
|
||||||
@ -191,65 +121,6 @@ le32_set(le32_t *p, unsigned int v)
|
|||||||
p->ld[3] = v >> 24;
|
p->ld[3] = v >> 24;
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
|
||||||
* convert a 32-bit float to adata_t, clipping to -1:1, boundaries
|
|
||||||
* excluded
|
|
||||||
*/
|
|
||||||
static inline int
|
|
||||||
f32_to_adata(unsigned int x)
|
|
||||||
{
|
|
||||||
unsigned int s, e, m, y;
|
|
||||||
|
|
||||||
s = (x >> 31);
|
|
||||||
e = (x >> 23) & 0xff;
|
|
||||||
m = (x << 8) | 0x80000000;
|
|
||||||
if (e < 127 - 24)
|
|
||||||
y = 0;
|
|
||||||
else if (e > 127 - 1)
|
|
||||||
y = ADATA_UNIT - 1;
|
|
||||||
else
|
|
||||||
y = m >> (127 + (32 - ADATA_BITS) - e);
|
|
||||||
return (y ^ -s) + s;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* convert samples from little endian ieee 754 floats to adata_t
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
wav_dec_f32le(unsigned char *in, adata_t *out, int count)
|
|
||||||
{
|
|
||||||
while (count > 0) {
|
|
||||||
*out = f32_to_adata(le32_get((le32_t *)in));
|
|
||||||
in += 4;
|
|
||||||
out++;
|
|
||||||
count--;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* convert samples from ulaw to adata_t
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
wav_dec_ulaw(unsigned char *in, adata_t *out, int count)
|
|
||||||
{
|
|
||||||
while (count > 0) {
|
|
||||||
*out++ = (adata_t)(wav_ulawmap[*in++]) << (ADATA_BITS - 16);
|
|
||||||
count--;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* convert samples from alaw to adata_t
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
wav_dec_alaw(unsigned char *in, adata_t *out, int count)
|
|
||||||
{
|
|
||||||
while (count > 0) {
|
|
||||||
*out++ = (adata_t)(wav_alawmap[*in++]) << (ADATA_BITS - 16);
|
|
||||||
count--;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
static int
|
static int
|
||||||
wav_readfmt(struct wav *w, unsigned int csize)
|
wav_readfmt(struct wav *w, unsigned int csize)
|
||||||
{
|
{
|
||||||
@ -326,7 +197,7 @@ wav_readfmt(struct wav *w, unsigned int csize)
|
|||||||
w->par.msb = 0;
|
w->par.msb = 0;
|
||||||
break;
|
break;
|
||||||
case WAV_FMT_FLOAT:
|
case WAV_FMT_FLOAT:
|
||||||
w->enc = ENC_F32LE;
|
w->enc = ENC_FLOAT;
|
||||||
if (bits != 32) {
|
if (bits != 32) {
|
||||||
log_puts("only 32-bit float supported\n");
|
log_puts("only 32-bit float supported\n");
|
||||||
return 0;
|
return 0;
|
||||||
@ -334,7 +205,7 @@ wav_readfmt(struct wav *w, unsigned int csize)
|
|||||||
w->par.bits = 32;
|
w->par.bits = 32;
|
||||||
w->par.bps = 4;
|
w->par.bps = 4;
|
||||||
w->par.le = 1;
|
w->par.le = 1;
|
||||||
w->par.sig = 1;
|
w->par.sig = 0;
|
||||||
w->par.msb = 0;
|
w->par.msb = 0;
|
||||||
break;
|
break;
|
||||||
default:
|
default:
|
||||||
|
@ -25,7 +25,7 @@ struct wav {
|
|||||||
#define ENC_PCM 0 /* simple integers (fixed point) */
|
#define ENC_PCM 0 /* simple integers (fixed point) */
|
||||||
#define ENC_ULAW 1 /* 8-bit mu-law */
|
#define ENC_ULAW 1 /* 8-bit mu-law */
|
||||||
#define ENC_ALAW 2 /* 8-bit a-law */
|
#define ENC_ALAW 2 /* 8-bit a-law */
|
||||||
#define ENC_F32LE 3 /* IEEE 754 32-bit floats */
|
#define ENC_FLOAT 3 /* IEEE 754 32-bit floats */
|
||||||
int enc; /* one of above */
|
int enc; /* one of above */
|
||||||
int rate; /* file sample rate */
|
int rate; /* file sample rate */
|
||||||
int nch; /* file channel count */
|
int nch; /* file channel count */
|
||||||
|
Loading…
Reference in New Issue
Block a user