54 0, 1, 2, 3, 4, 5, 6, 7,
55 8, 9, 10, 11, 12, 13, 14, 15,
56 16, 17, 18, 19, 20, 21, 22, 23,
57 24, 25, 26, 27, 28, 29, 30, 31,
58 32, 33, 34, 35, 36, 37, 38, 39,
59 40, 41, 42, 43, 47, 51, 56, 61,
60 66, 72, 79, 86, 94, 102, 112, 122,
61 133, 145, 158, 173, 189, 206, 225, 245,
62 267, 292, 318, 348, 379, 414, 452, 493,
63 538, 587, 640, 699, 763, 832, 908, 991,
64 1081, 1180, 1288, 1405, 1534, 1673, 1826, 1993,
65 2175, 2373, 2590, 2826, 3084, 3365, 3672, 4008,
66 4373, 4772, 5208, 5683, 6202, 6767, 7385, 8059,
67 8794, 9597, 10472, 11428, 12471, 13609, 14851, 16206,
68 17685, 19298, 21060, 22981, 25078, 27367, 29864, 32589,
69 -29973, -26728, -23186, -19322, -15105, -10503, -5481, -1,
70 1, 1, 5481, 10503, 15105, 19322, 23186, 26728,
71 29973, -32589, -29864, -27367, -25078, -22981, -21060, -19298,
72 -17685, -16206, -14851, -13609, -12471, -11428, -10472, -9597,
73 -8794, -8059, -7385, -6767, -6202, -5683, -5208, -4772,
74 -4373, -4008, -3672, -3365, -3084, -2826, -2590, -2373,
75 -2175, -1993, -1826, -1673, -1534, -1405, -1288, -1180,
76 -1081, -991, -908, -832, -763, -699, -640, -587,
77 -538, -493, -452, -414, -379, -348, -318, -292,
78 -267, -245, -225, -206, -189, -173, -158, -145,
79 -133, -122, -112, -102, -94, -86, -79, -72,
80 -66, -61, -56, -51, -47, -43, -42, -41,
81 -40, -39, -38, -37, -36, -35, -34, -33,
82 -32, -31, -30, -29, -28, -27, -26, -25,
83 -24, -23, -22, -21, -20, -19, -18, -17,
84 -16, -15, -14, -13, -12, -11, -10, -9,
85 -8, -7, -6, -5, -4, -3, -2, -1
90 0x0, 0x1, 0x2, 0x3, 0x6, 0xA, 0xF, 0x15,
91 -0x15, -0xF, -0xA, -0x6, -0x3, -0x2, -0x1, 0x0
95 0x0, 0x1, 0x2, 0x3, 0x6, 0xA, 0xF, 0x15,
96 0x0, -0x1, -0x2, -0x3, -0x6, -0xA, -0xF, -0x15
100 0x000, 0x008, 0x010, 0x020, 0x030, 0x040, 0x050, 0x060, 0x070, 0x080,
101 0x090, 0x0A0, 0x0B0, 0x0C0, 0x0D0, 0x0E0, 0x0F0, 0x100, 0x110, 0x120,
102 0x130, 0x140, 0x150, 0x160, 0x170, 0x180, 0x190, 0x1A0, 0x1B0, 0x1C0,
103 0x1D0, 0x1E0, 0x1F0, 0x200, 0x208, 0x210, 0x218, 0x220, 0x228, 0x230,
104 0x238, 0x240, 0x248, 0x250, 0x258, 0x260, 0x268, 0x270, 0x278, 0x280,
105 0x288, 0x290, 0x298, 0x2A0, 0x2A8, 0x2B0, 0x2B8, 0x2C0, 0x2C8, 0x2D0,
106 0x2D8, 0x2E0, 0x2E8, 0x2F0, 0x2F8, 0x300, 0x308, 0x310, 0x318, 0x320,
107 0x328, 0x330, 0x338, 0x340, 0x348, 0x350, 0x358, 0x360, 0x368, 0x370,
108 0x378, 0x380, 0x388, 0x390, 0x398, 0x3A0, 0x3A8, 0x3B0, 0x3B8, 0x3C0,
109 0x3C8, 0x3D0, 0x3D8, 0x3E0, 0x3E8, 0x3F0, 0x3F8, 0x400, 0x440, 0x480,
110 0x4C0, 0x500, 0x540, 0x580, 0x5C0, 0x600, 0x640, 0x680, 0x6C0, 0x700,
111 0x740, 0x780, 0x7C0, 0x800, 0x900, 0xA00, 0xB00, 0xC00, 0xD00, 0xE00,
112 0xF00, 0x1000, 0x1400, 0x1800, 0x1C00, 0x2000, 0x3000, 0x4000
133 for (i = 0; i < 128; i++) {
175 int *got_frame_ptr,
AVPacket *avpkt)
177 const uint8_t *buf = avpkt->
data;
178 int buf_size = avpkt->
size;
179 const uint8_t *buf_end = buf + buf_size;
185 int16_t *output_samples;
187 if (stereo && (buf_size & 1)) {
221 output_samples = (int16_t *)s->
frame.
data[0];
229 predictor[1] = (int16_t)(bytestream_get_byte(&buf) << 8);
230 predictor[0] = (int16_t)(bytestream_get_byte(&buf) << 8);
232 predictor[0] = (int16_t)bytestream_get_le16(&buf);
236 while (buf < buf_end) {
238 predictor[ch] = av_clip_int16(predictor[ch]);
239 *output_samples++ = predictor[ch];
249 for (ch = 0; ch < s->
channels; ch++) {
250 predictor[ch] = (int16_t)bytestream_get_le16(&buf);
251 *output_samples++ = predictor[ch];
255 while (buf < buf_end) {
257 predictor[ch] = av_clip_int16(predictor[ch]);
258 *output_samples++ = predictor[ch];
267 int shift[2] = { 4, 4 };
269 for (ch = 0; ch < s->
channels; ch++)
270 predictor[ch] = (int16_t)bytestream_get_le16(&buf);
273 while (buf < buf_end) {
275 int16_t diff = (n & 0xFC) << 8;
279 shift[ch] -= (2 * (n & 3));
285 predictor[ch] += diff;
287 predictor[ch] = av_clip_int16(predictor[ch]);
288 *output_samples++ = predictor[ch];
297 uint8_t *output_samples_u8 = s->
frame.
data[0];
298 while (buf < buf_end) {
303 *output_samples_u8++ = s->
sample[0];
307 *output_samples_u8++ = s->
sample[stereo];
310 while (buf < buf_end) {
315 *output_samples++ = s->
sample[ch];
329 #define DPCM_DECODER(id_, name_, long_name_) \
330 AVCodec ff_ ## name_ ## _decoder = { \
332 .type = AVMEDIA_TYPE_AUDIO, \
334 .priv_data_size = sizeof(DPCMContext), \
335 .init = dpcm_decode_init, \
336 .decode = dpcm_decode_frame, \
337 .capabilities = CODEC_CAP_DR1, \
338 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \