54 0, 1, 2, 3, 4, 5, 6, 7,
55 8, 9, 10, 11, 12, 13, 14, 16,
56 17, 19, 21, 23, 25, 28, 31, 34,
57 37, 41, 45, 50, 55, 60, 66, 73,
58 80, 88, 97, 107, 118, 130, 143, 157,
59 173, 190, 209, 230, 253, 279, 307, 337,
60 371, 408, 449, 494, 544, 598, 658, 724,
61 796, 876, 963, 1060, 1166, 1282, 1411, 1552,
62 1707, 1878, 2066, 2272, 2499, 2749, 3024, 3327,
63 3660, 4026, 4428, 4871, 5358, 5894, 6484, 7132,
64 7845, 8630, 9493, 10442, 11487, 12635, 13899, 15289,
65 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767,
69 0, 1, 2, 3, 4, 5, 6, 7,
70 8, 9, 10, 11, 12, 13, 14, 15,
71 16, 17, 18, 19, 20, 21, 22, 23,
72 24, 25, 26, 27, 28, 29, 30, 31,
73 32, 33, 34, 35, 36, 37, 38, 39,
74 40, 41, 42, 43, 47, 51, 56, 61,
75 66, 72, 79, 86, 94, 102, 112, 122,
76 133, 145, 158, 173, 189, 206, 225, 245,
77 267, 292, 318, 348, 379, 414, 452, 493,
78 538, 587, 640, 699, 763, 832, 908, 991,
79 1081, 1180, 1288, 1405, 1534, 1673, 1826, 1993,
80 2175, 2373, 2590, 2826, 3084, 3365, 3672, 4008,
81 4373, 4772, 5208, 5683, 6202, 6767, 7385, 8059,
82 8794, 9597, 10472, 11428, 12471, 13609, 14851, 16206,
83 17685, 19298, 21060, 22981, 25078, 27367, 29864, 32589,
84 -29973, -26728, -23186, -19322, -15105, -10503, -5481, -1,
85 1, 1, 5481, 10503, 15105, 19322, 23186, 26728,
86 29973, -32589, -29864, -27367, -25078, -22981, -21060, -19298,
87 -17685, -16206, -14851, -13609, -12471, -11428, -10472, -9597,
88 -8794, -8059, -7385, -6767, -6202, -5683, -5208, -4772,
89 -4373, -4008, -3672, -3365, -3084, -2826, -2590, -2373,
90 -2175, -1993, -1826, -1673, -1534, -1405, -1288, -1180,
91 -1081, -991, -908, -832, -763, -699, -640, -587,
92 -538, -493, -452, -414, -379, -348, -318, -292,
93 -267, -245, -225, -206, -189, -173, -158, -145,
94 -133, -122, -112, -102, -94, -86, -79, -72,
95 -66, -61, -56, -51, -47, -43, -42, -41,
96 -40, -39, -38, -37, -36, -35, -34, -33,
97 -32, -31, -30, -29, -28, -27, -26, -25,
98 -24, -23, -22, -21, -20, -19, -18, -17,
99 -16, -15, -14, -13, -12, -11, -10, -9,
100 -8, -7, -6, -5, -4, -3, -2, -1
105 0x0, 0x1, 0x2, 0x3, 0x6, 0xA, 0xF, 0x15,
106 -0x15, -0xF, -0xA, -0x6, -0x3, -0x2, -0x1, 0x0
110 0x0, 0x1, 0x2, 0x3, 0x6, 0xA, 0xF, 0x15,
111 0x0, -0x1, -0x2, -0x3, -0x6, -0xA, -0xF, -0x15
115 0x000, 0x008, 0x010, 0x020, 0x030, 0x040, 0x050, 0x060, 0x070, 0x080,
116 0x090, 0x0A0, 0x0B0, 0x0C0, 0x0D0, 0x0E0, 0x0F0, 0x100, 0x110, 0x120,
117 0x130, 0x140, 0x150, 0x160, 0x170, 0x180, 0x190, 0x1A0, 0x1B0, 0x1C0,
118 0x1D0, 0x1E0, 0x1F0, 0x200, 0x208, 0x210, 0x218, 0x220, 0x228, 0x230,
119 0x238, 0x240, 0x248, 0x250, 0x258, 0x260, 0x268, 0x270, 0x278, 0x280,
120 0x288, 0x290, 0x298, 0x2A0, 0x2A8, 0x2B0, 0x2B8, 0x2C0, 0x2C8, 0x2D0,
121 0x2D8, 0x2E0, 0x2E8, 0x2F0, 0x2F8, 0x300, 0x308, 0x310, 0x318, 0x320,
122 0x328, 0x330, 0x338, 0x340, 0x348, 0x350, 0x358, 0x360, 0x368, 0x370,
123 0x378, 0x380, 0x388, 0x390, 0x398, 0x3A0, 0x3A8, 0x3B0, 0x3B8, 0x3C0,
124 0x3C8, 0x3D0, 0x3D8, 0x3E0, 0x3E8, 0x3F0, 0x3F8, 0x400, 0x440, 0x480,
125 0x4C0, 0x500, 0x540, 0x580, 0x5C0, 0x600, 0x640, 0x680, 0x6C0, 0x700,
126 0x740, 0x780, 0x7C0, 0x800, 0x900, 0xA00, 0xB00, 0xC00, 0xD00, 0xE00,
127 0xF00, 0x1000, 0x1400, 0x1800, 0x1C00, 0x2000, 0x3000, 0x4000
141 s->sample[0] =
s->sample[1] = 0;
147 for (
i = 0;
i < 128;
i++) {
158 s->sample[0] =
s->sample[1] = 0x80;
162 s->sample[0] =
s->sample[1] = 0x80;
173 for (
i = -128;
i < 128;
i++) {
185 for (
i = 0;
i < 127;
i++) {
211 int *got_frame_ptr,
AVPacket *avpkt)
213 int buf_size = avpkt->
size;
219 int16_t *output_samples, *samples_end;
222 if (stereo && (buf_size & 1))
261 output_samples = (int16_t *)
frame->data[0];
262 samples_end = output_samples +
out;
277 while (output_samples < samples_end) {
278 predictor[ch] +=
s->array[bytestream2_get_byteu(&gb)];
296 while (output_samples < samples_end) {
308 int shift[2] = { 4, 4 };
314 while (output_samples < samples_end) {
315 int diff = bytestream2_get_byteu(&gb);
321 shift[ch] -= (2 * n);
340 uint8_t *output_samples_u8 =
frame->data[0],
341 *samples_end_u8 = output_samples_u8 +
out;
342 while (output_samples_u8 < samples_end_u8) {
343 int n = bytestream2_get_byteu(&gb);
345 s->sample[0] +=
s->sol_table[n >> 4];
347 *output_samples_u8++ =
s->sample[0];
349 s->sample[stereo] +=
s->sol_table[n & 0x0F];
351 *output_samples_u8++ =
s->sample[stereo];
354 while (output_samples < samples_end) {
355 int n = bytestream2_get_byteu(&gb);
359 *output_samples++ =
s->sample[ch];
367 while (output_samples < samples_end) {
368 int8_t n = bytestream2_get_byteu(&gb);
372 s->sample[ch] +=
s->array[n + 128];
374 *output_samples++ =
s->sample[ch];
382 while (output_samples < samples_end) {
383 uint8_t n = bytestream2_get_byteu(&gb);
385 *output_samples++ =
s->sample[idx] += (unsigned)
s->array[n];
394 while (output_samples < samples_end) {
395 uint8_t n = bytestream2_get_byteu(&gb);
400 *output_samples++ =
s->sample[idx];
412 #define DPCM_DECODER(id_, name_, long_name_) \
413 const FFCodec ff_ ## name_ ## _decoder = { \
415 .p.long_name = NULL_IF_CONFIG_SMALL(long_name_), \
416 .p.type = AVMEDIA_TYPE_AUDIO, \
418 .p.capabilities = AV_CODEC_CAP_DR1, \
419 .priv_data_size = sizeof(DPCMContext), \
420 .init = dpcm_decode_init, \
421 FF_CODEC_DECODE_CB(dpcm_decode_frame), \
422 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE, \