FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/adpcm.c
Date: 2025-05-15 14:57:22
Exec Total Coverage
Lines: 557 734 75.9%
Functions: 16 21 76.2%
Branches: 454 709 64.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2001-2003 The FFmpeg project
3 *
4 * first version by Francois Revol (revol@free.fr)
5 * fringe ADPCM codecs (e.g., DK3, DK4, Westwood)
6 * by Mike Melanson (melanson@pcisys.net)
7 * CD-ROM XA ADPCM codec by BERO
8 * EA ADPCM decoder by Robin Kay (komadori@myrealbox.com)
9 * EA ADPCM R1/R2/R3 decoder by Peter Ross (pross@xvid.org)
10 * EA IMA EACS decoder by Peter Ross (pross@xvid.org)
11 * EA IMA SEAD decoder by Peter Ross (pross@xvid.org)
12 * EA ADPCM XAS decoder by Peter Ross (pross@xvid.org)
13 * MAXIS EA ADPCM decoder by Robert Marston (rmarston@gmail.com)
14 * THP ADPCM decoder by Marco Gerards (mgerards@xs4all.nl)
15 * Argonaut Games ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
16 * Simon & Schuster Interactive ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
17 * Ubisoft ADPCM decoder by Zane van Iperen (zane@zanevaniperen.com)
18 * High Voltage Software ALP decoder by Zane van Iperen (zane@zanevaniperen.com)
19 * Cunning Developments decoder by Zane van Iperen (zane@zanevaniperen.com)
20 *
21 * This file is part of FFmpeg.
22 *
23 * FFmpeg is free software; you can redistribute it and/or
24 * modify it under the terms of the GNU Lesser General Public
25 * License as published by the Free Software Foundation; either
26 * version 2.1 of the License, or (at your option) any later version.
27 *
28 * FFmpeg is distributed in the hope that it will be useful,
29 * but WITHOUT ANY WARRANTY; without even the implied warranty of
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
31 * Lesser General Public License for more details.
32 *
33 * You should have received a copy of the GNU Lesser General Public
34 * License along with FFmpeg; if not, write to the Free Software
35 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
36 */
37
38 #include "config_components.h"
39
40 #include "avcodec.h"
41 #include "get_bits.h"
42 #include "bytestream.h"
43 #include "adpcm.h"
44 #include "adpcm_data.h"
45 #include "codec_internal.h"
46 #include "decode.h"
47
48 /**
49 * @file
50 * ADPCM decoders
51 * Features and limitations:
52 *
53 * Reference documents:
54 * http://wiki.multimedia.cx/index.php?title=Category:ADPCM_Audio_Codecs
55 * http://www.pcisys.net/~melanson/codecs/simpleaudio.html [dead]
56 * http://www.geocities.com/SiliconValley/8682/aud3.txt [dead]
57 * http://openquicktime.sourceforge.net/
58 * XAnim sources (xa_codec.c) http://xanim.polter.net/
59 * http://www.cs.ucla.edu/~leec/mediabench/applications.html [dead]
60 * SoX source code http://sox.sourceforge.net/
61 *
62 * CD-ROM XA:
63 * http://ku-www.ss.titech.ac.jp/~yatsushi/xaadpcm.html [dead]
64 * vagpack & depack http://homepages.compuserve.de/bITmASTER32/psx-index.html [dead]
65 * readstr http://www.geocities.co.jp/Playtown/2004/
66 */
67
68 #define CASE_0(codec_id, ...)
69 #define CASE_1(codec_id, ...) \
70 case codec_id: \
71 { __VA_ARGS__ } \
72 break;
73 #define CASE_2(enabled, codec_id, ...) \
74 CASE_ ## enabled(codec_id, __VA_ARGS__)
75 #define CASE_3(config, codec_id, ...) \
76 CASE_2(config, codec_id, __VA_ARGS__)
77 #define CASE(codec, ...) \
78 CASE_3(CONFIG_ ## codec ## _DECODER, AV_CODEC_ID_ ## codec, __VA_ARGS__)
79
80 /* These are for CD-ROM XA ADPCM */
81 static const int8_t xa_adpcm_table[5][2] = {
82 { 0, 0 },
83 { 60, 0 },
84 { 115, -52 },
85 { 98, -55 },
86 { 122, -60 }
87 };
88
89 static const int16_t afc_coeffs[2][16] = {
90 { 0, 2048, 0, 1024, 4096, 3584, 3072, 4608, 4200, 4800, 5120, 2048, 1024, -1024, -1024, -2048 },
91 { 0, 0, 2048, 1024, -2048, -1536, -1024, -2560, -2248, -2300, -3072, -2048, -1024, 1024, 0, 0 }
92 };
93
94 static const int16_t ea_adpcm_table[] = {
95 0, 240, 460, 392,
96 0, 0, -208, -220,
97 0, 1, 3, 4,
98 7, 8, 10, 11,
99 0, -1, -3, -4
100 };
101
102 /*
103 * Dumped from the binaries:
104 * - FantasticJourney.exe - 0x794D2, DGROUP:0x47A4D2
105 * - BigRaceUSA.exe - 0x9B8AA, DGROUP:0x49C4AA
106 * - Timeshock!.exe - 0x8506A, DGROUP:0x485C6A
107 */
108 static const int8_t ima_cunning_index_table[9] = {
109 -1, -1, -1, -1, 1, 2, 3, 4, -1
110 };
111
112 /*
113 * Dumped from the binaries:
114 * - FantasticJourney.exe - 0x79458, DGROUP:0x47A458
115 * - BigRaceUSA.exe - 0x9B830, DGROUP:0x49C430
116 * - Timeshock!.exe - 0x84FF0, DGROUP:0x485BF0
117 */
118 static const int16_t ima_cunning_step_table[61] = {
119 1, 1, 1, 1, 2, 2, 3, 3, 4, 5,
120 6, 7, 8, 10, 12, 14, 16, 20, 24, 28,
121 32, 40, 48, 56, 64, 80, 96, 112, 128, 160,
122 192, 224, 256, 320, 384, 448, 512, 640, 768, 896,
123 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, 4096, 5120,
124 6144, 7168, 8192, 10240, 12288, 14336, 16384, 20480, 24576, 28672, 0
125 };
126
127 static const int8_t adpcm_index_table2[4] = {
128 -1, 2,
129 -1, 2,
130 };
131
132 static const int8_t adpcm_index_table3[8] = {
133 -1, -1, 1, 2,
134 -1, -1, 1, 2,
135 };
136
137 static const int8_t adpcm_index_table5[32] = {
138 -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
139 -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16,
140 };
141
142 static const int8_t * const adpcm_index_tables[4] = {
143 &adpcm_index_table2[0],
144 &adpcm_index_table3[0],
145 &ff_adpcm_index_table[0],
146 &adpcm_index_table5[0],
147 };
148
149 static const int16_t mtaf_stepsize[32][16] = {
150 { 1, 5, 9, 13, 16, 20, 24, 28,
151 -1, -5, -9, -13, -16, -20, -24, -28, },
152 { 2, 6, 11, 15, 20, 24, 29, 33,
153 -2, -6, -11, -15, -20, -24, -29, -33, },
154 { 2, 7, 13, 18, 23, 28, 34, 39,
155 -2, -7, -13, -18, -23, -28, -34, -39, },
156 { 3, 9, 15, 21, 28, 34, 40, 46,
157 -3, -9, -15, -21, -28, -34, -40, -46, },
158 { 3, 11, 18, 26, 33, 41, 48, 56,
159 -3, -11, -18, -26, -33, -41, -48, -56, },
160 { 4, 13, 22, 31, 40, 49, 58, 67,
161 -4, -13, -22, -31, -40, -49, -58, -67, },
162 { 5, 16, 26, 37, 48, 59, 69, 80,
163 -5, -16, -26, -37, -48, -59, -69, -80, },
164 { 6, 19, 31, 44, 57, 70, 82, 95,
165 -6, -19, -31, -44, -57, -70, -82, -95, },
166 { 7, 22, 38, 53, 68, 83, 99, 114,
167 -7, -22, -38, -53, -68, -83, -99, -114, },
168 { 9, 27, 45, 63, 81, 99, 117, 135,
169 -9, -27, -45, -63, -81, -99, -117, -135, },
170 { 10, 32, 53, 75, 96, 118, 139, 161,
171 -10, -32, -53, -75, -96, -118, -139, -161, },
172 { 12, 38, 64, 90, 115, 141, 167, 193,
173 -12, -38, -64, -90, -115, -141, -167, -193, },
174 { 15, 45, 76, 106, 137, 167, 198, 228,
175 -15, -45, -76, -106, -137, -167, -198, -228, },
176 { 18, 54, 91, 127, 164, 200, 237, 273,
177 -18, -54, -91, -127, -164, -200, -237, -273, },
178 { 21, 65, 108, 152, 195, 239, 282, 326,
179 -21, -65, -108, -152, -195, -239, -282, -326, },
180 { 25, 77, 129, 181, 232, 284, 336, 388,
181 -25, -77, -129, -181, -232, -284, -336, -388, },
182 { 30, 92, 153, 215, 276, 338, 399, 461,
183 -30, -92, -153, -215, -276, -338, -399, -461, },
184 { 36, 109, 183, 256, 329, 402, 476, 549,
185 -36, -109, -183, -256, -329, -402, -476, -549, },
186 { 43, 130, 218, 305, 392, 479, 567, 654,
187 -43, -130, -218, -305, -392, -479, -567, -654, },
188 { 52, 156, 260, 364, 468, 572, 676, 780,
189 -52, -156, -260, -364, -468, -572, -676, -780, },
190 { 62, 186, 310, 434, 558, 682, 806, 930,
191 -62, -186, -310, -434, -558, -682, -806, -930, },
192 { 73, 221, 368, 516, 663, 811, 958, 1106,
193 -73, -221, -368, -516, -663, -811, -958, -1106, },
194 { 87, 263, 439, 615, 790, 966, 1142, 1318,
195 -87, -263, -439, -615, -790, -966, -1142, -1318, },
196 { 104, 314, 523, 733, 942, 1152, 1361, 1571,
197 -104, -314, -523, -733, -942, -1152, -1361, -1571, },
198 { 124, 374, 623, 873, 1122, 1372, 1621, 1871,
199 -124, -374, -623, -873, -1122, -1372, -1621, -1871, },
200 { 148, 445, 743, 1040, 1337, 1634, 1932, 2229,
201 -148, -445, -743, -1040, -1337, -1634, -1932, -2229, },
202 { 177, 531, 885, 1239, 1593, 1947, 2301, 2655,
203 -177, -531, -885, -1239, -1593, -1947, -2301, -2655, },
204 { 210, 632, 1053, 1475, 1896, 2318, 2739, 3161,
205 -210, -632, -1053, -1475, -1896, -2318, -2739, -3161, },
206 { 251, 753, 1255, 1757, 2260, 2762, 3264, 3766,
207 -251, -753, -1255, -1757, -2260, -2762, -3264, -3766, },
208 { 299, 897, 1495, 2093, 2692, 3290, 3888, 4486,
209 -299, -897, -1495, -2093, -2692, -3290, -3888, -4486, },
210 { 356, 1068, 1781, 2493, 3206, 3918, 4631, 5343,
211 -356, -1068, -1781, -2493, -3206, -3918, -4631, -5343, },
212 { 424, 1273, 2121, 2970, 3819, 4668, 5516, 6365,
213 -424, -1273, -2121, -2970, -3819, -4668, -5516, -6365, },
214 };
215
216 static const int16_t oki_step_table[49] = {
217 16, 17, 19, 21, 23, 25, 28, 31, 34, 37,
218 41, 45, 50, 55, 60, 66, 73, 80, 88, 97,
219 107, 118, 130, 143, 157, 173, 190, 209, 230, 253,
220 279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
221 724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552
222 };
223
224 // padded to zero where table size is less then 16
225 static const int8_t swf_index_tables[4][16] = {
226 /*2*/ { -1, 2 },
227 /*3*/ { -1, -1, 2, 4 },
228 /*4*/ { -1, -1, -1, -1, 2, 4, 6, 8 },
229 /*5*/ { -1, -1, -1, -1, -1, -1, -1, -1, 1, 2, 4, 6, 8, 10, 13, 16 }
230 };
231
232 static const int8_t zork_index_table[8] = {
233 -1, -1, -1, 1, 4, 7, 10, 12,
234 };
235
236 static const int8_t mtf_index_table[16] = {
237 8, 6, 4, 2, -1, -1, -1, -1,
238 -1, -1, -1, -1, 2, 4, 6, 8,
239 };
240
241 /* end of tables */
242
243 typedef struct ADPCMDecodeContext {
244 ADPCMChannelStatus status[14];
245 int vqa_version; /**< VQA version. Used for ADPCM_IMA_WS */
246 int has_status; /**< Status flag. Reset to 0 after a flush. */
247 } ADPCMDecodeContext;
248
249 static void adpcm_flush(AVCodecContext *avctx);
250
251 187 static av_cold int adpcm_decode_init(AVCodecContext * avctx)
252 {
253 187 ADPCMDecodeContext *c = avctx->priv_data;
254 187 unsigned int min_channels = 1;
255 187 unsigned int max_channels = 2;
256
257 187 adpcm_flush(avctx);
258
259
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 187 switch(avctx->codec->id) {
260 3 case AV_CODEC_ID_ADPCM_IMA_AMV:
261 3 max_channels = 1;
262 3 break;
263 23 case AV_CODEC_ID_ADPCM_AFC:
264 case AV_CODEC_ID_ADPCM_EA_R1:
265 case AV_CODEC_ID_ADPCM_EA_R2:
266 case AV_CODEC_ID_ADPCM_EA_R3:
267 case AV_CODEC_ID_ADPCM_EA_XAS:
268 case AV_CODEC_ID_ADPCM_MS:
269 23 max_channels = 6;
270 23 break;
271 ✗ case AV_CODEC_ID_ADPCM_MTAF:
272 ✗ min_channels = 2;
273 ✗ max_channels = 8;
274 ✗ if (avctx->ch_layout.nb_channels & 1) {
275 ✗ avpriv_request_sample(avctx, "channel count %d", avctx->ch_layout.nb_channels);
276 ✗ return AVERROR_PATCHWELCOME;
277 }
278 ✗ break;
279 2 case AV_CODEC_ID_ADPCM_DTK:
280 2 min_channels = 2;
281 2 break;
282 ✗ case AV_CODEC_ID_ADPCM_PSX:
283 ✗ max_channels = 8;
284 ✗ if (avctx->ch_layout.nb_channels <= 0 ||
285 ✗ avctx->block_align % (16 * avctx->ch_layout.nb_channels))
286 ✗ return AVERROR_INVALIDDATA;
287 ✗ break;
288 8 case AV_CODEC_ID_ADPCM_IMA_DAT4:
289 case AV_CODEC_ID_ADPCM_THP:
290 case AV_CODEC_ID_ADPCM_THP_LE:
291 8 max_channels = 14;
292 8 break;
293 }
294
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 187 if (avctx->ch_layout.nb_channels < min_channels ||
295
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 187 avctx->ch_layout.nb_channels > max_channels) {
296 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n");
297 ✗ return AVERROR(EINVAL);
298 }
299
300
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 187 switch(avctx->codec->id) {
301 9 case AV_CODEC_ID_ADPCM_IMA_WAV:
302
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 9 if (avctx->bits_per_coded_sample < 2 || avctx->bits_per_coded_sample > 5)
303 ✗ return AVERROR_INVALIDDATA;
304 9 break;
305 6 case AV_CODEC_ID_ADPCM_ARGO:
306
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 6 if (avctx->bits_per_coded_sample != 4 ||
307
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 6 avctx->block_align != 17 * avctx->ch_layout.nb_channels)
308 ✗ return AVERROR_INVALIDDATA;
309 6 break;
310 1 case AV_CODEC_ID_ADPCM_IMA_XBOX:
311
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 1 if (avctx->bits_per_coded_sample != 4)
312 ✗ return AVERROR_INVALIDDATA;
313 1 break;
314 ✗ case AV_CODEC_ID_ADPCM_ZORK:
315 ✗ if (avctx->bits_per_coded_sample != 8)
316 ✗ return AVERROR_INVALIDDATA;
317 ✗ break;
318 171 default:
319 171 break;
320 }
321
322
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 187 switch (avctx->codec->id) {
323 87 case AV_CODEC_ID_ADPCM_AICA:
324 case AV_CODEC_ID_ADPCM_IMA_CUNNING:
325 case AV_CODEC_ID_ADPCM_IMA_DAT4:
326 case AV_CODEC_ID_ADPCM_IMA_QT:
327 case AV_CODEC_ID_ADPCM_IMA_WAV:
328 case AV_CODEC_ID_ADPCM_IMA_XBOX:
329 case AV_CODEC_ID_ADPCM_4XM:
330 case AV_CODEC_ID_ADPCM_XA:
331 case AV_CODEC_ID_ADPCM_XMD:
332 case AV_CODEC_ID_ADPCM_EA_R1:
333 case AV_CODEC_ID_ADPCM_EA_R2:
334 case AV_CODEC_ID_ADPCM_EA_R3:
335 case AV_CODEC_ID_ADPCM_EA_XAS:
336 case AV_CODEC_ID_ADPCM_THP:
337 case AV_CODEC_ID_ADPCM_THP_LE:
338 case AV_CODEC_ID_ADPCM_AFC:
339 case AV_CODEC_ID_ADPCM_DTK:
340 case AV_CODEC_ID_ADPCM_PSX:
341 case AV_CODEC_ID_ADPCM_MTAF:
342 case AV_CODEC_ID_ADPCM_ARGO:
343 case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
344 87 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
345 87 break;
346 8 case AV_CODEC_ID_ADPCM_IMA_WS:
347
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 8 avctx->sample_fmt = c->vqa_version == 3 ? AV_SAMPLE_FMT_S16P :
348 AV_SAMPLE_FMT_S16;
349 8 break;
350 11 case AV_CODEC_ID_ADPCM_MS:
351
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 11 avctx->sample_fmt = avctx->ch_layout.nb_channels > 2 ? AV_SAMPLE_FMT_S16P :
352 AV_SAMPLE_FMT_S16;
353 11 break;
354 81 default:
355 81 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
356 }
357 187 return 0;
358 }
359
360 ✗ static inline int16_t adpcm_agm_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
361 {
362 int delta, pred, step, add;
363
364 ✗ pred = c->predictor;
365 ✗ delta = nibble & 7;
366 ✗ step = c->step;
367 ✗ add = (delta * 2 + 1) * step;
368 ✗ if (add < 0)
369 ✗ add = add + 7;
370
371 ✗ if ((nibble & 8) == 0)
372 ✗ pred = av_clip(pred + (add >> 3), -32767, 32767);
373 else
374 ✗ pred = av_clip(pred - (add >> 3), -32767, 32767);
375
376 ✗ switch (delta) {
377 ✗ case 7:
378 ✗ step *= 0x99;
379 ✗ break;
380 ✗ case 6:
381 ✗ c->step = av_clip(c->step * 2, 127, 24576);
382 ✗ c->predictor = pred;
383 ✗ return pred;
384 ✗ case 5:
385 ✗ step *= 0x66;
386 ✗ break;
387 ✗ case 4:
388 ✗ step *= 0x4d;
389 ✗ break;
390 ✗ default:
391 ✗ step *= 0x39;
392 ✗ break;
393 }
394
395 ✗ if (step < 0)
396 ✗ step += 0x3f;
397
398 ✗ c->step = step >> 6;
399 ✗ c->step = av_clip(c->step, 127, 24576);
400 ✗ c->predictor = pred;
401 ✗ return pred;
402 }
403
404 10317674 static inline int16_t adpcm_ima_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift)
405 {
406 int step_index;
407 int predictor;
408 int sign, delta, diff, step;
409
410 10317674 step = ff_adpcm_step_table[c->step_index];
411 10317674 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
412 10317674 step_index = av_clip(step_index, 0, 88);
413
414 10317674 sign = nibble & 8;
415 10317674 delta = nibble & 7;
416 /* perform direct multiplication instead of series of jumps proposed by
417 * the reference ADPCM implementation since modern CPUs can do the mults
418 * quickly enough */
419 10317674 diff = ((2 * delta + 1) * step) >> shift;
420 10317674 predictor = c->predictor;
421
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 10317674 if (sign) predictor -= diff;
422 5206600 else predictor += diff;
423
424 10317674 c->predictor = av_clip_int16(predictor);
425 10317674 c->step_index = step_index;
426
427 10317674 return (int16_t)c->predictor;
428 }
429
430 679344 static inline int16_t adpcm_ima_alp_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int shift)
431 {
432 int step_index;
433 int predictor;
434 int sign, delta, diff, step;
435
436 679344 step = ff_adpcm_step_table[c->step_index];
437 679344 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
438 679344 step_index = av_clip(step_index, 0, 88);
439
440 679344 sign = nibble & 8;
441 679344 delta = nibble & 7;
442 679344 diff = (delta * step) >> shift;
443 679344 predictor = c->predictor;
444
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 679344 if (sign) predictor -= diff;
445 339502 else predictor += diff;
446
447 679344 c->predictor = av_clip_int16(predictor);
448 679344 c->step_index = step_index;
449
450 679344 return (int16_t)c->predictor;
451 }
452
453 ✗ static inline int16_t adpcm_ima_mtf_expand_nibble(ADPCMChannelStatus *c, int nibble)
454 {
455 int step_index, step, delta, predictor;
456
457 ✗ step = ff_adpcm_step_table[c->step_index];
458
459 ✗ delta = step * (2 * nibble - 15);
460 ✗ predictor = c->predictor + delta;
461
462 ✗ step_index = c->step_index + mtf_index_table[(unsigned)nibble];
463 ✗ c->predictor = av_clip_int16(predictor >> 4);
464 ✗ c->step_index = av_clip(step_index, 0, 88);
465
466 ✗ return (int16_t)c->predictor;
467 }
468
469 386028 static inline int16_t adpcm_ima_cunning_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
470 {
471 int step_index;
472 int predictor;
473 int step;
474
475 386028 nibble = sign_extend(nibble & 0xF, 4);
476
477 386028 step = ima_cunning_step_table[c->step_index];
478 386028 step_index = c->step_index + ima_cunning_index_table[abs(nibble)];
479 386028 step_index = av_clip(step_index, 0, 60);
480
481 386028 predictor = c->predictor + step * nibble;
482
483 386028 c->predictor = av_clip_int16(predictor);
484 386028 c->step_index = step_index;
485
486 386028 return c->predictor;
487 }
488
489 ✗ static inline int16_t adpcm_ima_wav_expand_nibble(ADPCMChannelStatus *c, GetBitContext *gb, int bps)
490 {
491 int nibble, step_index, predictor, sign, delta, diff, step, shift;
492
493 ✗ shift = bps - 1;
494 ✗ nibble = get_bits_le(gb, bps),
495 ✗ step = ff_adpcm_step_table[c->step_index];
496 ✗ step_index = c->step_index + adpcm_index_tables[bps - 2][nibble];
497 ✗ step_index = av_clip(step_index, 0, 88);
498
499 ✗ sign = nibble & (1 << shift);
500 ✗ delta = av_zero_extend(nibble, shift);
501 ✗ diff = ((2 * delta + 1) * step) >> shift;
502 ✗ predictor = c->predictor;
503 ✗ if (sign) predictor -= diff;
504 ✗ else predictor += diff;
505
506 ✗ c->predictor = av_clip_int16(predictor);
507 ✗ c->step_index = step_index;
508
509 ✗ return (int16_t)c->predictor;
510 }
511
512 4696090 static inline int adpcm_ima_qt_expand_nibble(ADPCMChannelStatus *c, int nibble)
513 {
514 int step_index;
515 int predictor;
516 int diff, step;
517
518 4696090 step = ff_adpcm_step_table[c->step_index];
519 4696090 step_index = c->step_index + ff_adpcm_index_table[nibble];
520 4696090 step_index = av_clip(step_index, 0, 88);
521
522 4696090 diff = step >> 3;
523
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 4696090 if (nibble & 4) diff += step;
524
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 4696090 if (nibble & 2) diff += step >> 1;
525
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 4696090 if (nibble & 1) diff += step >> 2;
526
527
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 4696090 if (nibble & 8)
528 2338238 predictor = c->predictor - diff;
529 else
530 2357852 predictor = c->predictor + diff;
531
532 4696090 c->predictor = av_clip_int16(predictor);
533 4696090 c->step_index = step_index;
534
535 4696090 return c->predictor;
536 }
537
538 2233434 static inline int16_t adpcm_ms_expand_nibble(ADPCMChannelStatus *c, int nibble)
539 {
540 int predictor;
541
542 2233434 predictor = (((c->sample1) * (c->coeff1)) + ((c->sample2) * (c->coeff2))) / 64;
543
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 2233434 predictor += ((nibble & 0x08)?(nibble - 0x10):(nibble)) * c->idelta;
544
545 2233434 c->sample2 = c->sample1;
546 2233434 c->sample1 = av_clip_int16(predictor);
547 2233434 c->idelta = (ff_adpcm_AdaptationTable[(int)nibble] * c->idelta) >> 8;
548
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 2233434 if (c->idelta < 16) c->idelta = 16;
549
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 2233434 if (c->idelta > INT_MAX/768) {
550 ✗ av_log(NULL, AV_LOG_WARNING, "idelta overflow\n");
551 ✗ c->idelta = INT_MAX/768;
552 }
553
554 2233434 return c->sample1;
555 }
556
557 55124 static inline int16_t adpcm_ima_oki_expand_nibble(ADPCMChannelStatus *c, int nibble)
558 {
559 int step_index, predictor, sign, delta, diff, step;
560
561 55124 step = oki_step_table[c->step_index];
562 55124 step_index = c->step_index + ff_adpcm_index_table[(unsigned)nibble];
563 55124 step_index = av_clip(step_index, 0, 48);
564
565 55124 sign = nibble & 8;
566 55124 delta = nibble & 7;
567 55124 diff = ((2 * delta + 1) * step) >> 3;
568 55124 predictor = c->predictor;
569
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 55124 if (sign) predictor -= diff;
570 29772 else predictor += diff;
571
572 55124 c->predictor = av_clip_intp2(predictor, 11);
573 55124 c->step_index = step_index;
574
575 55124 return c->predictor * 16;
576 }
577
578 524192 static inline int16_t adpcm_ct_expand_nibble(ADPCMChannelStatus *c, int8_t nibble)
579 {
580 int sign, delta, diff;
581 int new_step;
582
583 524192 sign = nibble & 8;
584 524192 delta = nibble & 7;
585 /* perform direct multiplication instead of series of jumps proposed by
586 * the reference ADPCM implementation since modern CPUs can do the mults
587 * quickly enough */
588 524192 diff = ((2 * delta + 1) * c->step) >> 3;
589 /* predictor update is not so trivial: predictor is multiplied on 254/256 before updating */
590
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 524192 c->predictor = ((c->predictor * 254) >> 8) + (sign ? -diff : diff);
591 524192 c->predictor = av_clip_int16(c->predictor);
592 /* calculate new step and clamp it to range 511..32767 */
593 524192 new_step = (ff_adpcm_AdaptationTable[nibble & 7] * c->step) >> 8;
594 524192 c->step = av_clip(new_step, 511, 32767);
595
596 524192 return (int16_t)c->predictor;
597 }
598
599 313380 static inline int16_t adpcm_sbpro_expand_nibble(ADPCMChannelStatus *c, int8_t nibble, int size, int shift)
600 {
601 int sign, delta, diff;
602
603 313380 sign = nibble & (1<<(size-1));
604 313380 delta = nibble & ((1<<(size-1))-1);
605 313380 diff = delta << (7 + c->step + shift);
606
607 /* clamp result */
608
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 313380 c->predictor = av_clip(c->predictor + (sign ? -diff : diff), -16384,16256);
609
610 /* calculate new step */
611
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 313380 if (delta >= (2*size - 3) && c->step < 3)
612 75080 c->step++;
613
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 238300 else if (delta == 0 && c->step > 0)
614 75080 c->step--;
615
616 313380 return (int16_t) c->predictor;
617 }
618
619 1105920 static inline int16_t adpcm_yamaha_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
620 {
621
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 1105920 if(!c->step) {
622 5 c->predictor = 0;
623 5 c->step = 127;
624 }
625
626 1105920 c->predictor += (c->step * ff_adpcm_yamaha_difflookup[nibble]) / 8;
627 1105920 c->predictor = av_clip_int16(c->predictor);
628 1105920 c->step = (c->step * ff_adpcm_yamaha_indexscale[nibble]) >> 8;
629 1105920 c->step = av_clip(c->step, 127, 24576);
630 1105920 return c->predictor;
631 }
632
633 ✗ static inline int16_t adpcm_mtaf_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
634 {
635 ✗ c->predictor += mtaf_stepsize[c->step][nibble];
636 ✗ c->predictor = av_clip_int16(c->predictor);
637 ✗ c->step += ff_adpcm_index_table[nibble];
638 ✗ c->step = av_clip_uintp2(c->step, 5);
639 ✗ return c->predictor;
640 }
641
642 ✗ static inline int16_t adpcm_zork_expand_nibble(ADPCMChannelStatus *c, uint8_t nibble)
643 {
644 ✗ int16_t index = c->step_index;
645 ✗ uint32_t lookup_sample = ff_adpcm_step_table[index];
646 ✗ int32_t sample = 0;
647
648 ✗ if (nibble & 0x40)
649 ✗ sample += lookup_sample;
650 ✗ if (nibble & 0x20)
651 ✗ sample += lookup_sample >> 1;
652 ✗ if (nibble & 0x10)
653 ✗ sample += lookup_sample >> 2;
654 ✗ if (nibble & 0x08)
655 ✗ sample += lookup_sample >> 3;
656 ✗ if (nibble & 0x04)
657 ✗ sample += lookup_sample >> 4;
658 ✗ if (nibble & 0x02)
659 ✗ sample += lookup_sample >> 5;
660 ✗ if (nibble & 0x01)
661 ✗ sample += lookup_sample >> 6;
662 ✗ if (nibble & 0x80)
663 ✗ sample = -sample;
664
665 ✗ sample += c->predictor;
666 ✗ sample = av_clip_int16(sample);
667
668 ✗ index += zork_index_table[(nibble >> 4) & 7];
669 ✗ index = av_clip(index, 0, 88);
670
671 ✗ c->predictor = sample;
672 ✗ c->step_index = index;
673
674 ✗ return sample;
675 }
676
677 666 static int xa_decode(AVCodecContext *avctx, int16_t *out0, int16_t *out1,
678 const uint8_t *in, ADPCMChannelStatus *left,
679 ADPCMChannelStatus *right, int channels, int sample_offset)
680 {
681 int i, j;
682 int shift,filter,f0,f1;
683 int s_1,s_2;
684 int d,s,t;
685
686 666 out0 += sample_offset;
687
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 666 if (channels == 1)
688 ✗ out1 = out0 + 28;
689 else
690 666 out1 += sample_offset;
691
692
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 3330 for(i=0;i<4;i++) {
693 2664 shift = 12 - (in[4+i*2] & 15);
694 2664 filter = in[4+i*2] >> 4;
695
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 2664 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table)) {
696 ✗ avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
697 ✗ filter=0;
698 }
699
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 2664 if (shift < 0) {
700 ✗ avpriv_request_sample(avctx, "unknown XA-ADPCM shift %d", shift);
701 ✗ shift = 0;
702 }
703 2664 f0 = xa_adpcm_table[filter][0];
704 2664 f1 = xa_adpcm_table[filter][1];
705
706 2664 s_1 = left->sample1;
707 2664 s_2 = left->sample2;
708
709
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 77256 for(j=0;j<28;j++) {
710 74592 d = in[16+i+j*4];
711
712 74592 t = sign_extend(d, 4);
713 74592 s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
714 74592 s_2 = s_1;
715 74592 s_1 = av_clip_int16(s);
716 74592 out0[j] = s_1;
717 }
718
719
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 2664 if (channels == 2) {
720 2664 left->sample1 = s_1;
721 2664 left->sample2 = s_2;
722 2664 s_1 = right->sample1;
723 2664 s_2 = right->sample2;
724 }
725
726 2664 shift = 12 - (in[5+i*2] & 15);
727 2664 filter = in[5+i*2] >> 4;
728
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 2664 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table) || shift < 0) {
729 ✗ avpriv_request_sample(avctx, "unknown XA-ADPCM filter %d", filter);
730 ✗ filter=0;
731 }
732
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 2664 if (shift < 0) {
733 ✗ avpriv_request_sample(avctx, "unknown XA-ADPCM shift %d", shift);
734 ✗ shift = 0;
735 }
736
737 2664 f0 = xa_adpcm_table[filter][0];
738 2664 f1 = xa_adpcm_table[filter][1];
739
740
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 77256 for(j=0;j<28;j++) {
741 74592 d = in[16+i+j*4];
742
743 74592 t = sign_extend(d >> 4, 4);
744 74592 s = t*(1<<shift) + ((s_1*f0 + s_2*f1+32)>>6);
745 74592 s_2 = s_1;
746 74592 s_1 = av_clip_int16(s);
747 74592 out1[j] = s_1;
748 }
749
750
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 2664 if (channels == 2) {
751 2664 right->sample1 = s_1;
752 2664 right->sample2 = s_2;
753 } else {
754 ✗ left->sample1 = s_1;
755 ✗ left->sample2 = s_2;
756 }
757
758 2664 out0 += 28 * (3 - channels);
759 2664 out1 += 28 * (3 - channels);
760 }
761
762 666 return 0;
763 }
764
765 195 static void adpcm_swf_decode(AVCodecContext *avctx, const uint8_t *buf, int buf_size, int16_t *samples)
766 {
767 195 ADPCMDecodeContext *c = avctx->priv_data;
768 GetBitContext gb;
769 const int8_t *table;
770 195 int channels = avctx->ch_layout.nb_channels;
771 int k0, signmask, nb_bits, count;
772 195 int size = buf_size*8;
773 int i;
774
775 195 init_get_bits(&gb, buf, size);
776
777 //read bits & initial values
778 195 nb_bits = get_bits(&gb, 2)+2;
779 195 table = swf_index_tables[nb_bits-2];
780 195 k0 = 1 << (nb_bits-2);
781 195 signmask = 1 << (nb_bits-1);
782
783
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 390 while (get_bits_count(&gb) <= size - 22 * channels) {
784
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 585 for (i = 0; i < channels; i++) {
785 390 *samples++ = c->status[i].predictor = get_sbits(&gb, 16);
786 390 c->status[i].step_index = get_bits(&gb, 6);
787 }
788
789
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 798720 for (count = 0; get_bits_count(&gb) <= size - nb_bits * channels && count < 4095; count++) {
790 int i;
791
792
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 2395575 for (i = 0; i < channels; i++) {
793 // similar to IMA adpcm
794 1597050 int delta = get_bits(&gb, nb_bits);
795 1597050 int step = ff_adpcm_step_table[c->status[i].step_index];
796 1597050 int vpdiff = 0; // vpdiff = (delta+0.5)*step/4
797 1597050 int k = k0;
798
799 do {
800
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 4791150 if (delta & k)
801 1979561 vpdiff += step;
802 4791150 step >>= 1;
803 4791150 k >>= 1;
804
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 4791150 } while(k);
805 1597050 vpdiff += step;
806
807
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 1597050 if (delta & signmask)
808 803527 c->status[i].predictor -= vpdiff;
809 else
810 793523 c->status[i].predictor += vpdiff;
811
812 1597050 c->status[i].step_index += table[delta & (~signmask)];
813
814 1597050 c->status[i].step_index = av_clip(c->status[i].step_index, 0, 88);
815 1597050 c->status[i].predictor = av_clip_int16(c->status[i].predictor);
816
817 1597050 *samples++ = c->status[i].predictor;
818 }
819 }
820 }
821 195 }
822
823 18335520 int16_t ff_adpcm_argo_expand_nibble(ADPCMChannelStatus *cs, int nibble, int shift, int flag)
824 {
825 18335520 int sample = sign_extend(nibble, 4) * (1 << shift);
826
827
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 18335520 if (flag)
828 9806208 sample += (8 * cs->sample1) - (4 * cs->sample2);
829 else
830 8529312 sample += 4 * cs->sample1;
831
832 18335520 sample = av_clip_int16(sample >> 2);
833
834 18335520 cs->sample2 = cs->sample1;
835 18335520 cs->sample1 = sample;
836
837 18335520 return sample;
838 }
839
840 /**
841 * Get the number of samples (per channel) that will be decoded from the packet.
842 * In one case, this is actually the maximum number of samples possible to
843 * decode with the given buf_size.
844 *
845 * @param[out] coded_samples set to the number of samples as coded in the
846 * packet, or 0 if the codec does not encode the
847 * number of samples in each frame.
848 * @param[out] approx_nb_samples set to non-zero if the number of samples
849 * returned is an approximation.
850 */
851 37698 static int get_nb_samples(AVCodecContext *avctx, GetByteContext *gb,
852 int buf_size, int *coded_samples, int *approx_nb_samples)
853 {
854 37698 ADPCMDecodeContext *s = avctx->priv_data;
855 37698 int nb_samples = 0;
856 37698 int ch = avctx->ch_layout.nb_channels;
857 37698 int has_coded_samples = 0;
858 int header_size;
859
860 37698 *coded_samples = 0;
861 37698 *approx_nb_samples = 0;
862
863
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 37698 if(ch <= 0)
864 ✗ return 0;
865
866
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 37698 switch (avctx->codec->id) {
867 /* constant, only check buf_size */
868 600 case AV_CODEC_ID_ADPCM_EA_XAS:
869
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 600 if (buf_size < 76 * ch)
870 ✗ return 0;
871 600 nb_samples = 128;
872 600 break;
873 26342 case AV_CODEC_ID_ADPCM_IMA_QT:
874
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 26342 if (buf_size < 34 * ch)
875 ✗ return 0;
876 26342 nb_samples = 64;
877 26342 break;
878 /* simple 4-bit adpcm */
879 1195 case AV_CODEC_ID_ADPCM_CT:
880 case AV_CODEC_ID_ADPCM_IMA_APC:
881 case AV_CODEC_ID_ADPCM_IMA_CUNNING:
882 case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
883 case AV_CODEC_ID_ADPCM_IMA_OKI:
884 case AV_CODEC_ID_ADPCM_IMA_WS:
885 case AV_CODEC_ID_ADPCM_YAMAHA:
886 case AV_CODEC_ID_ADPCM_AICA:
887 case AV_CODEC_ID_ADPCM_IMA_SSI:
888 case AV_CODEC_ID_ADPCM_IMA_APM:
889 case AV_CODEC_ID_ADPCM_IMA_ALP:
890 case AV_CODEC_ID_ADPCM_IMA_MTF:
891 1195 nb_samples = buf_size * 2 / ch;
892 1195 break;
893 }
894
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 37698 if (nb_samples)
895 28137 return nb_samples;
896
897 /* simple 4-bit adpcm, with header */
898 9561 header_size = 0;
899
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 9561 switch (avctx->codec->id) {
900 145 case AV_CODEC_ID_ADPCM_4XM:
901 case AV_CODEC_ID_ADPCM_AGM:
902 case AV_CODEC_ID_ADPCM_IMA_ACORN:
903 case AV_CODEC_ID_ADPCM_IMA_DAT4:
904 case AV_CODEC_ID_ADPCM_IMA_MOFLEX:
905 145 case AV_CODEC_ID_ADPCM_IMA_ISS: header_size = 4 * ch; break;
906 350 case AV_CODEC_ID_ADPCM_IMA_SMJPEG: header_size = 4 * ch; break;
907 }
908
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 9561 if (header_size > 0)
909 495 return (buf_size - header_size) * 2 / ch;
910
911 /* more complex formats */
912
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 9066 switch (avctx->codec->id) {
913 163 case AV_CODEC_ID_ADPCM_IMA_AMV:
914 163 bytestream2_skip(gb, 4);
915 163 has_coded_samples = 1;
916 163 *coded_samples = bytestream2_get_le32u(gb);
917 163 nb_samples = FFMIN((buf_size - 8) * 2, *coded_samples);
918 163 bytestream2_seek(gb, -8, SEEK_CUR);
919 163 break;
920 158 case AV_CODEC_ID_ADPCM_EA:
921 /* Stereo is 30 bytes per block */
922 /* Mono is 15 bytes per block */
923 158 has_coded_samples = 1;
924 158 *coded_samples = bytestream2_get_le32(gb);
925 158 *coded_samples -= *coded_samples % 28;
926
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 158 nb_samples = (buf_size - 12) / (ch == 2 ? 30 : 15) * 28;
927 158 break;
928 47 case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
929 47 has_coded_samples = 1;
930 47 *coded_samples = bytestream2_get_le32(gb);
931 47 nb_samples = (buf_size - (4 + 8 * ch)) * 2 / ch;
932 47 break;
933 39 case AV_CODEC_ID_ADPCM_EA_MAXIS_XA:
934 39 nb_samples = (buf_size - ch) / ch * 2;
935 39 break;
936 400 case AV_CODEC_ID_ADPCM_EA_R1:
937 case AV_CODEC_ID_ADPCM_EA_R2:
938 case AV_CODEC_ID_ADPCM_EA_R3:
939 /* maximum number of samples */
940 /* has internal offsets and a per-frame switch to signal raw 16-bit */
941 400 has_coded_samples = 1;
942
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 400 switch (avctx->codec->id) {
943 95 case AV_CODEC_ID_ADPCM_EA_R1:
944 95 header_size = 4 + 9 * ch;
945 95 *coded_samples = bytestream2_get_le32(gb);
946 95 break;
947 180 case AV_CODEC_ID_ADPCM_EA_R2:
948 180 header_size = 4 + 5 * ch;
949 180 *coded_samples = bytestream2_get_le32(gb);
950 180 break;
951 125 case AV_CODEC_ID_ADPCM_EA_R3:
952 125 header_size = 4 + 5 * ch;
953 125 *coded_samples = bytestream2_get_be32(gb);
954 125 break;
955 }
956 400 *coded_samples -= *coded_samples % 28;
957 400 nb_samples = (buf_size - header_size) * 2 / ch;
958 400 nb_samples -= nb_samples % 28;
959 400 *approx_nb_samples = 1;
960 400 break;
961 642 case AV_CODEC_ID_ADPCM_IMA_DK3:
962
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 642 if (avctx->block_align > 0)
963 642 buf_size = FFMIN(buf_size, avctx->block_align);
964 642 nb_samples = ((buf_size - 16) * 2 / 3 * 4) / ch;
965 642 break;
966 649 case AV_CODEC_ID_ADPCM_IMA_DK4:
967
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 649 if (avctx->block_align > 0)
968 649 buf_size = FFMIN(buf_size, avctx->block_align);
969
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 649 if (buf_size < 4 * ch)
970 ✗ return AVERROR_INVALIDDATA;
971 649 nb_samples = 1 + (buf_size - 4 * ch) * 2 / ch;
972 649 break;
973 1000 case AV_CODEC_ID_ADPCM_IMA_RAD:
974
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 1000 if (avctx->block_align > 0)
975 1000 buf_size = FFMIN(buf_size, avctx->block_align);
976 1000 nb_samples = (buf_size - 4 * ch) * 2 / ch;
977 1000 break;
978
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 1668 CASE(ADPCM_IMA_WAV,
979 int bsize = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
980 int bsamples = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
981 if (avctx->block_align > 0)
982 buf_size = FFMIN(buf_size, avctx->block_align);
983 if (buf_size < 4 * ch)
984 return AVERROR_INVALIDDATA;
985 nb_samples = 1 + (buf_size - 4 * ch) / (bsize * ch) * bsamples;
986 ) /* End of CASE */
987 ✗ CASE(ADPCM_IMA_XBOX,
988 int bsize = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
989 int bsamples = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
990 if (avctx->block_align > 0)
991 buf_size = FFMIN(buf_size, avctx->block_align);
992 if (buf_size < 4 * ch)
993 return AVERROR_INVALIDDATA;
994 nb_samples = (buf_size - 4 * ch) / (bsize * ch) * bsamples + 1;
995 ) /* End of CASE */
996 2950 case AV_CODEC_ID_ADPCM_MS:
997
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 2950 if (avctx->block_align > 0)
998 2950 buf_size = FFMIN(buf_size, avctx->block_align);
999 2950 nb_samples = (buf_size - 6 * ch) * 2 / ch;
1000 2950 break;
1001 ✗ case AV_CODEC_ID_ADPCM_MTAF:
1002 ✗ if (avctx->block_align > 0)
1003 ✗ buf_size = FFMIN(buf_size, avctx->block_align);
1004 ✗ nb_samples = (buf_size - 16 * (ch / 2)) * 2 / ch;
1005 ✗ break;
1006 57 case AV_CODEC_ID_ADPCM_SBPRO_2:
1007 case AV_CODEC_ID_ADPCM_SBPRO_3:
1008 case AV_CODEC_ID_ADPCM_SBPRO_4:
1009 {
1010 int samples_per_byte;
1011
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 57 switch (avctx->codec->id) {
1012 13 case AV_CODEC_ID_ADPCM_SBPRO_2: samples_per_byte = 4; break;
1013 18 case AV_CODEC_ID_ADPCM_SBPRO_3: samples_per_byte = 3; break;
1014 26 case AV_CODEC_ID_ADPCM_SBPRO_4: samples_per_byte = 2; break;
1015 }
1016
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 57 if (!s->status[0].step_index) {
1017
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 3 if (buf_size < ch)
1018 ✗ return AVERROR_INVALIDDATA;
1019 3 nb_samples++;
1020 3 buf_size -= ch;
1021 }
1022 57 nb_samples += buf_size * samples_per_byte / ch;
1023 57 break;
1024 }
1025 195 case AV_CODEC_ID_ADPCM_SWF:
1026 {
1027 195 int buf_bits = buf_size * 8 - 2;
1028 195 int nbits = (bytestream2_get_byte(gb) >> 6) + 2;
1029 195 int block_hdr_size = 22 * ch;
1030 195 int block_size = block_hdr_size + nbits * ch * 4095;
1031 195 int nblocks = buf_bits / block_size;
1032 195 int bits_left = buf_bits - nblocks * block_size;
1033 195 nb_samples = nblocks * 4096;
1034
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 195 if (bits_left >= block_hdr_size)
1035 ✗ nb_samples += 1 + (bits_left - block_hdr_size) / (nbits * ch);
1036 195 break;
1037 }
1038 71 case AV_CODEC_ID_ADPCM_THP:
1039 case AV_CODEC_ID_ADPCM_THP_LE:
1040
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 71 if (avctx->extradata) {
1041 ✗ nb_samples = buf_size * 14 / (8 * ch);
1042 ✗ break;
1043 }
1044 71 has_coded_samples = 1;
1045 71 bytestream2_skip(gb, 4); // channel size
1046 142 *coded_samples = (avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE) ?
1047
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 142 bytestream2_get_le32(gb) :
1048 71 bytestream2_get_be32(gb);
1049 71 buf_size -= 8 + 36 * ch;
1050 71 buf_size /= ch;
1051 71 nb_samples = buf_size / 8 * 14;
1052
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 71 if (buf_size % 8 > 1)
1053 ✗ nb_samples += (buf_size % 8 - 1) * 2;
1054 71 *approx_nb_samples = 1;
1055 71 break;
1056 12 case AV_CODEC_ID_ADPCM_AFC:
1057 12 nb_samples = buf_size / (9 * ch) * 16;
1058 12 break;
1059 37 case AV_CODEC_ID_ADPCM_XA:
1060 37 nb_samples = (buf_size / 128) * 224 / ch;
1061 37 break;
1062 ✗ case AV_CODEC_ID_ADPCM_XMD:
1063 ✗ nb_samples = buf_size / (21 * ch) * 32;
1064 ✗ break;
1065 32 case AV_CODEC_ID_ADPCM_DTK:
1066 case AV_CODEC_ID_ADPCM_PSX:
1067 32 nb_samples = buf_size / (16 * ch) * 28;
1068 32 break;
1069 946 case AV_CODEC_ID_ADPCM_ARGO:
1070 946 nb_samples = buf_size / avctx->block_align * 32;
1071 946 break;
1072 ✗ case AV_CODEC_ID_ADPCM_ZORK:
1073 ✗ nb_samples = buf_size / ch;
1074 ✗ break;
1075 }
1076
1077 /* validate coded sample count */
1078
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 9066 if (has_coded_samples && (*coded_samples <= 0 || *coded_samples > nb_samples))
1079 ✗ return AVERROR_INVALIDDATA;
1080
1081 9066 return nb_samples;
1082 }
1083
1084 37698 static int adpcm_decode_frame(AVCodecContext *avctx, AVFrame *frame,
1085 int *got_frame_ptr, AVPacket *avpkt)
1086 {
1087 37698 const uint8_t *buf = avpkt->data;
1088 37698 int buf_size = avpkt->size;
1089 37698 ADPCMDecodeContext *c = avctx->priv_data;
1090 37698 int channels = avctx->ch_layout.nb_channels;
1091 int16_t *samples;
1092 int16_t **samples_p;
1093 int st; /* stereo */
1094 int nb_samples, coded_samples, approx_nb_samples, ret;
1095 GetByteContext gb;
1096
1097 37698 bytestream2_init(&gb, buf, buf_size);
1098 37698 nb_samples = get_nb_samples(avctx, &gb, buf_size, &coded_samples, &approx_nb_samples);
1099
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 37698 if (nb_samples <= 0) {
1100 ✗ av_log(avctx, AV_LOG_ERROR, "invalid number of samples in packet\n");
1101 ✗ return AVERROR_INVALIDDATA;
1102 }
1103
1104 /* get output buffer */
1105 37698 frame->nb_samples = nb_samples;
1106
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 37698 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
1107 ✗ return ret;
1108 37698 samples = (int16_t *)frame->data[0];
1109 37698 samples_p = (int16_t **)frame->extended_data;
1110
1111 /* use coded_samples when applicable */
1112 /* it is always <= nb_samples, so the output buffer will be large enough */
1113
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 37698 if (coded_samples) {
1114
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 839 if (!approx_nb_samples && coded_samples != nb_samples)
1115 ✗ av_log(avctx, AV_LOG_WARNING, "mismatch in coded sample count\n");
1116 839 frame->nb_samples = nb_samples = coded_samples;
1117 }
1118
1119 37698 st = channels == 2 ? 1 : 0;
1120
1121
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 37698 switch(avctx->codec->id) {
1122
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 1466726 CASE(ADPCM_IMA_QT,
1123 /* In QuickTime, IMA is encoded by chunks of 34 bytes (=64 samples).
1124 Channel data is interleaved per-chunk. */
1125 for (int channel = 0; channel < channels; channel++) {
1126 ADPCMChannelStatus *cs = &c->status[channel];
1127 int predictor;
1128 int step_index;
1129 /* (pppppp) (piiiiiii) */
1130
1131 /* Bits 15-7 are the _top_ 9 bits of the 16-bit initial predictor value */
1132 predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1133 step_index = predictor & 0x7F;
1134 predictor &= ~0x7F;
1135
1136 if (cs->step_index == step_index) {
1137 int diff = predictor - cs->predictor;
1138 if (diff < 0)
1139 diff = - diff;
1140 if (diff > 0x7f)
1141 goto update;
1142 } else {
1143 update:
1144 cs->step_index = step_index;
1145 cs->predictor = predictor;
1146 }
1147
1148 if (cs->step_index > 88u){
1149 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1150 channel, cs->step_index);
1151 return AVERROR_INVALIDDATA;
1152 }
1153
1154 samples = samples_p[channel];
1155
1156 for (int m = 0; m < 64; m += 2) {
1157 int byte = bytestream2_get_byteu(&gb);
1158 samples[m ] = adpcm_ima_qt_expand_nibble(cs, byte & 0x0F);
1159 samples[m + 1] = adpcm_ima_qt_expand_nibble(cs, byte >> 4 );
1160 }
1161 }
1162 ) /* End of CASE */
1163
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 1528416 CASE(ADPCM_IMA_WAV,
1164 for (int i = 0; i < channels; i++) {
1165 ADPCMChannelStatus *cs = &c->status[i];
1166 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
1167
1168 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1169 if (cs->step_index > 88u){
1170 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1171 i, cs->step_index);
1172 return AVERROR_INVALIDDATA;
1173 }
1174 }
1175
1176 if (avctx->bits_per_coded_sample != 4) {
1177 int samples_per_block = ff_adpcm_ima_block_samples[avctx->bits_per_coded_sample - 2];
1178 int block_size = ff_adpcm_ima_block_sizes[avctx->bits_per_coded_sample - 2];
1179 uint8_t temp[20 + AV_INPUT_BUFFER_PADDING_SIZE] = { 0 };
1180 GetBitContext g;
1181
1182 for (int n = 0; n < (nb_samples - 1) / samples_per_block; n++) {
1183 for (int i = 0; i < channels; i++) {
1184 ADPCMChannelStatus *cs = &c->status[i];
1185 samples = &samples_p[i][1 + n * samples_per_block];
1186 for (int j = 0; j < block_size; j++) {
1187 temp[j] = buf[4 * channels + block_size * n * channels +
1188 (j % 4) + (j / 4) * (channels * 4) + i * 4];
1189 }
1190 ret = init_get_bits8(&g, (const uint8_t *)&temp, block_size);
1191 if (ret < 0)
1192 return ret;
1193 for (int m = 0; m < samples_per_block; m++) {
1194 samples[m] = adpcm_ima_wav_expand_nibble(cs, &g,
1195 avctx->bits_per_coded_sample);
1196 }
1197 }
1198 }
1199 bytestream2_skip(&gb, avctx->block_align - channels * 4);
1200 } else {
1201 for (int n = 0; n < (nb_samples - 1) / 8; n++) {
1202 for (int i = 0; i < channels; i++) {
1203 ADPCMChannelStatus *cs = &c->status[i];
1204 samples = &samples_p[i][1 + n * 8];
1205 for (int m = 0; m < 8; m += 2) {
1206 int v = bytestream2_get_byteu(&gb);
1207 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1208 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1209 }
1210 }
1211 }
1212 }
1213 ) /* End of CASE */
1214 ✗ CASE(ADPCM_IMA_XBOX,
1215 for (int i = 0; i < channels; i++) {
1216 ADPCMChannelStatus *cs = &c->status[i];
1217 cs->predictor = samples_p[i][0] = sign_extend(bytestream2_get_le16u(&gb), 16);
1218
1219 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1220 if (cs->step_index > 88u) {
1221 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1222 i, cs->step_index);
1223 return AVERROR_INVALIDDATA;
1224 }
1225 }
1226
1227 for (int n = 0; n < (nb_samples-1) / 8; n++) {
1228 for (int i = 0; i < channels; i++) {
1229 ADPCMChannelStatus *cs = &c->status[i];
1230 samples = &samples_p[i][1 + n * 8];
1231 for (int m = 0; m < 8; m += 2) {
1232 int v = bytestream2_get_byteu(&gb);
1233 samples[m ] = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1234 samples[m + 1] = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1235 }
1236 }
1237 }
1238 frame->nb_samples--;
1239 ) /* End of CASE */
1240
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 38406 CASE(ADPCM_4XM,
1241 for (int i = 0; i < channels; i++)
1242 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1243
1244 for (int i = 0; i < channels; i++) {
1245 c->status[i].step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1246 if (c->status[i].step_index > 88u) {
1247 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1248 i, c->status[i].step_index);
1249 return AVERROR_INVALIDDATA;
1250 }
1251 }
1252
1253 for (int i = 0; i < channels; i++) {
1254 ADPCMChannelStatus *cs = &c->status[i];
1255 samples = (int16_t *)frame->data[i];
1256 for (int n = nb_samples >> 1; n > 0; n--) {
1257 int v = bytestream2_get_byteu(&gb);
1258 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 4);
1259 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 4);
1260 }
1261 }
1262 ) /* End of CASE */
1263 ✗ CASE(ADPCM_AGM,
1264 for (int i = 0; i < channels; i++)
1265 c->status[i].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1266 for (int i = 0; i < channels; i++)
1267 c->status[i].step = sign_extend(bytestream2_get_le16u(&gb), 16);
1268
1269 for (int n = 0; n < nb_samples >> (1 - st); n++) {
1270 int v = bytestream2_get_byteu(&gb);
1271 *samples++ = adpcm_agm_expand_nibble(&c->status[0], v & 0xF);
1272 *samples++ = adpcm_agm_expand_nibble(&c->status[st], v >> 4 );
1273 }
1274 ) /* End of CASE */
1275
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 1119667 CASE(ADPCM_MS,
1276 int block_predictor;
1277
1278 if (avctx->ch_layout.nb_channels > 2) {
1279 for (int channel = 0; channel < avctx->ch_layout.nb_channels; channel++) {
1280 samples = samples_p[channel];
1281 block_predictor = bytestream2_get_byteu(&gb);
1282 if (block_predictor > 6) {
1283 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[%d] = %d\n",
1284 channel, block_predictor);
1285 return AVERROR_INVALIDDATA;
1286 }
1287 c->status[channel].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1288 c->status[channel].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1289 c->status[channel].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1290 c->status[channel].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1291 c->status[channel].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1292 *samples++ = c->status[channel].sample2;
1293 *samples++ = c->status[channel].sample1;
1294 for (int n = (nb_samples - 2) >> 1; n > 0; n--) {
1295 int byte = bytestream2_get_byteu(&gb);
1296 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte >> 4 );
1297 *samples++ = adpcm_ms_expand_nibble(&c->status[channel], byte & 0x0F);
1298 }
1299 }
1300 } else {
1301 block_predictor = bytestream2_get_byteu(&gb);
1302 if (block_predictor > 6) {
1303 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[0] = %d\n",
1304 block_predictor);
1305 return AVERROR_INVALIDDATA;
1306 }
1307 c->status[0].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1308 c->status[0].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1309 if (st) {
1310 block_predictor = bytestream2_get_byteu(&gb);
1311 if (block_predictor > 6) {
1312 av_log(avctx, AV_LOG_ERROR, "ERROR: block_predictor[1] = %d\n",
1313 block_predictor);
1314 return AVERROR_INVALIDDATA;
1315 }
1316 c->status[1].coeff1 = ff_adpcm_AdaptCoeff1[block_predictor];
1317 c->status[1].coeff2 = ff_adpcm_AdaptCoeff2[block_predictor];
1318 }
1319 c->status[0].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1320 if (st){
1321 c->status[1].idelta = sign_extend(bytestream2_get_le16u(&gb), 16);
1322 }
1323
1324 c->status[0].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1325 if (st) c->status[1].sample1 = sign_extend(bytestream2_get_le16u(&gb), 16);
1326 c->status[0].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1327 if (st) c->status[1].sample2 = sign_extend(bytestream2_get_le16u(&gb), 16);
1328
1329 *samples++ = c->status[0].sample2;
1330 if (st) *samples++ = c->status[1].sample2;
1331 *samples++ = c->status[0].sample1;
1332 if (st) *samples++ = c->status[1].sample1;
1333 for (int n = (nb_samples - 2) >> (1 - st); n > 0; n--) {
1334 int byte = bytestream2_get_byteu(&gb);
1335 *samples++ = adpcm_ms_expand_nibble(&c->status[0 ], byte >> 4 );
1336 *samples++ = adpcm_ms_expand_nibble(&c->status[st], byte & 0x0F);
1337 }
1338 }
1339 ) /* End of CASE */
1340 ✗ CASE(ADPCM_MTAF,
1341 for (int channel = 0; channel < channels; channel += 2) {
1342 bytestream2_skipu(&gb, 4);
1343 c->status[channel ].step = bytestream2_get_le16u(&gb) & 0x1f;
1344 c->status[channel + 1].step = bytestream2_get_le16u(&gb) & 0x1f;
1345 c->status[channel ].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1346 bytestream2_skipu(&gb, 2);
1347 c->status[channel + 1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1348 bytestream2_skipu(&gb, 2);
1349 for (int n = 0; n < nb_samples; n += 2) {
1350 int v = bytestream2_get_byteu(&gb);
1351 samples_p[channel][n ] = adpcm_mtaf_expand_nibble(&c->status[channel], v & 0x0F);
1352 samples_p[channel][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel], v >> 4 );
1353 }
1354 for (int n = 0; n < nb_samples; n += 2) {
1355 int v = bytestream2_get_byteu(&gb);
1356 samples_p[channel + 1][n ] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v & 0x0F);
1357 samples_p[channel + 1][n + 1] = adpcm_mtaf_expand_nibble(&c->status[channel + 1], v >> 4 );
1358 }
1359 }
1360 ) /* End of CASE */
1361
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 1325907 CASE(ADPCM_IMA_DK4,
1362 for (int channel = 0; channel < channels; channel++) {
1363 ADPCMChannelStatus *cs = &c->status[channel];
1364 cs->predictor = *samples++ = sign_extend(bytestream2_get_le16u(&gb), 16);
1365 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1366 if (cs->step_index > 88u){
1367 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1368 channel, cs->step_index);
1369 return AVERROR_INVALIDDATA;
1370 }
1371 }
1372 for (int n = (nb_samples - 1) >> (1 - st); n > 0; n--) {
1373 int v = bytestream2_get_byteu(&gb);
1374 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v >> 4 , 3);
1375 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1376 }
1377 ) /* End of CASE */
1378
1379 /* DK3 ADPCM support macro */
1380 #define DK3_GET_NEXT_NIBBLE() \
1381 if (decode_top_nibble_next) { \
1382 nibble = last_byte >> 4; \
1383 decode_top_nibble_next = 0; \
1384 } else { \
1385 last_byte = bytestream2_get_byteu(&gb); \
1386 nibble = last_byte & 0x0F; \
1387 decode_top_nibble_next = 1; \
1388 }
1389
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 869910 CASE(ADPCM_IMA_DK3,
1390 int last_byte = 0;
1391 int nibble;
1392 int decode_top_nibble_next = 0;
1393 int diff_channel;
1394 const int16_t *samples_end = samples + channels * nb_samples;
1395
1396 bytestream2_skipu(&gb, 10);
1397 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1398 c->status[1].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1399 c->status[0].step_index = bytestream2_get_byteu(&gb);
1400 c->status[1].step_index = bytestream2_get_byteu(&gb);
1401 if (c->status[0].step_index > 88u || c->status[1].step_index > 88u){
1402 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i/%i\n",
1403 c->status[0].step_index, c->status[1].step_index);
1404 return AVERROR_INVALIDDATA;
1405 }
1406 /* sign extend the predictors */
1407 diff_channel = c->status[1].predictor;
1408
1409 while (samples < samples_end) {
1410
1411 /* for this algorithm, c->status[0] is the sum channel and
1412 * c->status[1] is the diff channel */
1413
1414 /* process the first predictor of the sum channel */
1415 DK3_GET_NEXT_NIBBLE();
1416 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1417
1418 /* process the diff channel predictor */
1419 DK3_GET_NEXT_NIBBLE();
1420 adpcm_ima_expand_nibble(&c->status[1], nibble, 3);
1421
1422 /* process the first pair of stereo PCM samples */
1423 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1424 *samples++ = c->status[0].predictor + c->status[1].predictor;
1425 *samples++ = c->status[0].predictor - c->status[1].predictor;
1426
1427 /* process the second predictor of the sum channel */
1428 DK3_GET_NEXT_NIBBLE();
1429 adpcm_ima_expand_nibble(&c->status[0], nibble, 3);
1430
1431 /* process the second pair of stereo PCM samples */
1432 diff_channel = (diff_channel + c->status[1].predictor) / 2;
1433 *samples++ = c->status[0].predictor + c->status[1].predictor;
1434 *samples++ = c->status[0].predictor - c->status[1].predictor;
1435 }
1436
1437 if ((bytestream2_tell(&gb) & 1))
1438 bytestream2_skip(&gb, 1);
1439 ) /* End of CASE */
1440
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 60690 CASE(ADPCM_IMA_ISS,
1441 for (int channel = 0; channel < channels; channel++) {
1442 ADPCMChannelStatus *cs = &c->status[channel];
1443 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1444 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1445 if (cs->step_index > 88u){
1446 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1447 channel, cs->step_index);
1448 return AVERROR_INVALIDDATA;
1449 }
1450 }
1451
1452 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1453 int v1, v2;
1454 int v = bytestream2_get_byteu(&gb);
1455 /* nibbles are swapped for mono */
1456 if (st) {
1457 v1 = v >> 4;
1458 v2 = v & 0x0F;
1459 } else {
1460 v2 = v >> 4;
1461 v1 = v & 0x0F;
1462 }
1463 *samples++ = adpcm_ima_expand_nibble(&c->status[0 ], v1, 3);
1464 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v2, 3);
1465 }
1466 ) /* End of CASE */
1467 ✗ CASE(ADPCM_IMA_MOFLEX,
1468 for (int channel = 0; channel < channels; channel++) {
1469 ADPCMChannelStatus *cs = &c->status[channel];
1470 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1471 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1472 if (cs->step_index > 88u){
1473 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1474 channel, cs->step_index);
1475 return AVERROR_INVALIDDATA;
1476 }
1477 }
1478
1479 for (int subframe = 0; subframe < nb_samples / 256; subframe++) {
1480 for (int channel = 0; channel < channels; channel++) {
1481 samples = samples_p[channel] + 256 * subframe;
1482 for (int n = 0; n < 256; n += 2) {
1483 int v = bytestream2_get_byteu(&gb);
1484 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1485 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1486 }
1487 }
1488 }
1489 ) /* End of CASE */
1490 ✗ CASE(ADPCM_IMA_DAT4,
1491 for (int channel = 0; channel < channels; channel++) {
1492 ADPCMChannelStatus *cs = &c->status[channel];
1493 samples = samples_p[channel];
1494 bytestream2_skip(&gb, 4);
1495 for (int n = 0; n < nb_samples; n += 2) {
1496 int v = bytestream2_get_byteu(&gb);
1497 *samples++ = adpcm_ima_expand_nibble(cs, v >> 4 , 3);
1498 *samples++ = adpcm_ima_expand_nibble(cs, v & 0x0F, 3);
1499 }
1500 }
1501 ) /* End of CASE */
1502
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 732239 CASE(ADPCM_IMA_APC,
1503 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1504 int v = bytestream2_get_byteu(&gb);
1505 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4 , 3);
1506 *samples++ = adpcm_ima_expand_nibble(&c->status[st], v & 0x0F, 3);
1507 }
1508 ) /* End of CASE */
1509
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 514727 CASE(ADPCM_IMA_SSI,
1510 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1511 int v = bytestream2_get_byteu(&gb);
1512 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0], v >> 4 );
1513 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0x0F);
1514 }
1515 ) /* End of CASE */
1516
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 529026 CASE(ADPCM_IMA_APM,
1517 for (int n = nb_samples / 2; n > 0; n--) {
1518 for (int channel = 0; channel < channels; channel++) {
1519 int v = bytestream2_get_byteu(&gb);
1520 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[channel], v >> 4 );
1521 samples[st] = adpcm_ima_qt_expand_nibble(&c->status[channel], v & 0x0F);
1522 }
1523 samples += channels;
1524 }
1525 ) /* End of CASE */
1526
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 512129 CASE(ADPCM_IMA_ALP,
1527 for (int n = nb_samples / 2; n > 0; n--) {
1528 for (int channel = 0; channel < channels; channel++) {
1529 int v = bytestream2_get_byteu(&gb);
1530 *samples++ = adpcm_ima_alp_expand_nibble(&c->status[channel], v >> 4 , 2);
1531 samples[st] = adpcm_ima_alp_expand_nibble(&c->status[channel], v & 0x0F, 2);
1532 }
1533 samples += channels;
1534 }
1535 ) /* End of CASE */
1536
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 193104 CASE(ADPCM_IMA_CUNNING,
1537 for (int channel = 0; channel < channels; channel++) {
1538 int16_t *smp = samples_p[channel];
1539 for (int n = 0; n < nb_samples / 2; n++) {
1540 int v = bytestream2_get_byteu(&gb);
1541 *smp++ = adpcm_ima_cunning_expand_nibble(&c->status[channel], v & 0x0F);
1542 *smp++ = adpcm_ima_cunning_expand_nibble(&c->status[channel], v >> 4);
1543 }
1544 }
1545 ) /* End of CASE */
1546
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 27616 CASE(ADPCM_IMA_OKI,
1547 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1548 int v = bytestream2_get_byteu(&gb);
1549 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[0], v >> 4 );
1550 *samples++ = adpcm_ima_oki_expand_nibble(&c->status[st], v & 0x0F);
1551 }
1552 ) /* End of CASE */
1553
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 83000 CASE(ADPCM_IMA_RAD,
1554 for (int channel = 0; channel < channels; channel++) {
1555 ADPCMChannelStatus *cs = &c->status[channel];
1556 cs->step_index = sign_extend(bytestream2_get_le16u(&gb), 16);
1557 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1558 if (cs->step_index > 88u){
1559 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1560 channel, cs->step_index);
1561 return AVERROR_INVALIDDATA;
1562 }
1563 }
1564 for (int n = 0; n < nb_samples / 2; n++) {
1565 int byte[2];
1566
1567 byte[0] = bytestream2_get_byteu(&gb);
1568 if (st)
1569 byte[1] = bytestream2_get_byteu(&gb);
1570 for (int channel = 0; channel < channels; channel++) {
1571 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] & 0x0F, 3);
1572 }
1573 for (int channel = 0; channel < channels; channel++) {
1574 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], byte[channel] >> 4 , 3);
1575 }
1576 }
1577 ) /* End of CASE */
1578
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 474397 CASE(ADPCM_IMA_WS,
1579 if (c->vqa_version == 3) {
1580 for (int channel = 0; channel < channels; channel++) {
1581 int16_t *smp = samples_p[channel];
1582
1583 for (int n = nb_samples / 2; n > 0; n--) {
1584 int v = bytestream2_get_byteu(&gb);
1585 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1586 *smp++ = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1587 }
1588 }
1589 } else {
1590 for (int n = nb_samples / 2; n > 0; n--) {
1591 for (int channel = 0; channel < channels; channel++) {
1592 int v = bytestream2_get_byteu(&gb);
1593 *samples++ = adpcm_ima_expand_nibble(&c->status[channel], v & 0x0F, 3);
1594 samples[st] = adpcm_ima_expand_nibble(&c->status[channel], v >> 4 , 3);
1595 }
1596 samples += channels;
1597 }
1598 }
1599 bytestream2_seek(&gb, 0, SEEK_END);
1600 ) /* End of CASE */
1601 ✗ CASE(ADPCM_XMD,
1602 int bytes_remaining, block = 0;
1603 while (bytestream2_get_bytes_left(&gb) >= 21 * channels) {
1604 for (int channel = 0; channel < channels; channel++) {
1605 int16_t *out = samples_p[channel] + block * 32;
1606 int16_t history[2];
1607 uint16_t scale;
1608
1609 history[1] = sign_extend(bytestream2_get_le16(&gb), 16);
1610 history[0] = sign_extend(bytestream2_get_le16(&gb), 16);
1611 scale = bytestream2_get_le16(&gb);
1612
1613 out[0] = history[1];
1614 out[1] = history[0];
1615
1616 for (int n = 0; n < 15; n++) {
1617 unsigned byte = bytestream2_get_byte(&gb);
1618 int32_t nibble[2];
1619
1620 nibble[0] = sign_extend(byte & 15, 4);
1621 nibble[1] = sign_extend(byte >> 4, 4);
1622
1623 out[2+n*2] = nibble[0]*scale + ((history[0]*3667 - history[1]*1642) >> 11);
1624 history[1] = history[0];
1625 history[0] = out[2+n*2];
1626
1627 out[2+n*2+1] = nibble[1]*scale + ((history[0]*3667 - history[1]*1642) >> 11);
1628 history[1] = history[0];
1629 history[0] = out[2+n*2+1];
1630 }
1631 }
1632
1633 block++;
1634 }
1635 bytes_remaining = bytestream2_get_bytes_left(&gb);
1636 if (bytes_remaining > 0) {
1637 bytestream2_skip(&gb, bytes_remaining);
1638 }
1639 ) /* End of CASE */
1640
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 703 CASE(ADPCM_XA,
1641 int16_t *out0 = samples_p[0];
1642 int16_t *out1 = samples_p[1];
1643 int samples_per_block = 28 * (3 - channels) * 4;
1644 int sample_offset = 0;
1645 int bytes_remaining;
1646 while (bytestream2_get_bytes_left(&gb) >= 128) {
1647 if ((ret = xa_decode(avctx, out0, out1, buf + bytestream2_tell(&gb),
1648 &c->status[0], &c->status[1],
1649 channels, sample_offset)) < 0)
1650 return ret;
1651 bytestream2_skipu(&gb, 128);
1652 sample_offset += samples_per_block;
1653 }
1654 /* Less than a full block of data left, e.g. when reading from
1655 * 2324 byte per sector XA; the remainder is padding */
1656 bytes_remaining = bytestream2_get_bytes_left(&gb);
1657 if (bytes_remaining > 0) {
1658 bytestream2_skip(&gb, bytes_remaining);
1659 }
1660 ) /* End of CASE */
1661
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 69231 CASE(ADPCM_IMA_EA_EACS,
1662 for (int i = 0; i <= st; i++) {
1663 c->status[i].step_index = bytestream2_get_le32u(&gb);
1664 if (c->status[i].step_index > 88u) {
1665 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1666 i, c->status[i].step_index);
1667 return AVERROR_INVALIDDATA;
1668 }
1669 }
1670 for (int i = 0; i <= st; i++) {
1671 c->status[i].predictor = bytestream2_get_le32u(&gb);
1672 if (FFABS((int64_t)c->status[i].predictor) > (1<<16))
1673 return AVERROR_INVALIDDATA;
1674 }
1675
1676 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1677 int byte = bytestream2_get_byteu(&gb);
1678 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 3);
1679 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 3);
1680 }
1681 ) /* End of CASE */
1682
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 71441 CASE(ADPCM_IMA_EA_SEAD,
1683 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1684 int byte = bytestream2_get_byteu(&gb);
1685 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte >> 4, 6);
1686 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte & 0x0F, 6);
1687 }
1688 ) /* End of CASE */
1689
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 240742 CASE(ADPCM_EA,
1690 int previous_left_sample, previous_right_sample;
1691 int current_left_sample, current_right_sample;
1692 int next_left_sample, next_right_sample;
1693 int coeff1l, coeff2l, coeff1r, coeff2r;
1694 int shift_left, shift_right;
1695
1696 /* Each EA ADPCM frame has a 12-byte header followed by 30-byte (stereo) or 15-byte (mono) pieces,
1697 each coding 28 stereo/mono samples. */
1698
1699 if (channels != 2 && channels != 1)
1700 return AVERROR_INVALIDDATA;
1701
1702 current_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1703 previous_left_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1704 current_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1705 previous_right_sample = sign_extend(bytestream2_get_le16u(&gb), 16);
1706
1707 for (int count1 = 0; count1 < nb_samples / 28; count1++) {
1708 int byte = bytestream2_get_byteu(&gb);
1709 coeff1l = ea_adpcm_table[ byte >> 4 ];
1710 coeff2l = ea_adpcm_table[(byte >> 4 ) + 4];
1711 coeff1r = ea_adpcm_table[ byte & 0x0F];
1712 coeff2r = ea_adpcm_table[(byte & 0x0F) + 4];
1713
1714 if (channels == 2){
1715 byte = bytestream2_get_byteu(&gb);
1716 shift_left = 20 - (byte >> 4);
1717 shift_right = 20 - (byte & 0x0F);
1718 } else{
1719 /* Mono packs the shift into the coefficient byte's lower nibble instead */
1720 shift_left = 20 - (byte & 0x0F);
1721 }
1722
1723 for (int count2 = 0; count2 < (channels == 2 ? 28 : 14); count2++) {
1724 byte = bytestream2_get_byteu(&gb);
1725 next_left_sample = sign_extend(byte >> 4, 4) * (1 << shift_left);
1726
1727 next_left_sample = (next_left_sample +
1728 (current_left_sample * coeff1l) +
1729 (previous_left_sample * coeff2l) + 0x80) >> 8;
1730
1731 previous_left_sample = current_left_sample;
1732 current_left_sample = av_clip_int16(next_left_sample);
1733 *samples++ = current_left_sample;
1734
1735 if (channels == 2){
1736 next_right_sample = sign_extend(byte, 4) * (1 << shift_right);
1737
1738 next_right_sample = (next_right_sample +
1739 (current_right_sample * coeff1r) +
1740 (previous_right_sample * coeff2r) + 0x80) >> 8;
1741
1742 previous_right_sample = current_right_sample;
1743 current_right_sample = av_clip_int16(next_right_sample);
1744 *samples++ = current_right_sample;
1745 } else {
1746 next_left_sample = sign_extend(byte, 4) * (1 << shift_left);
1747
1748 next_left_sample = (next_left_sample +
1749 (current_left_sample * coeff1l) +
1750 (previous_left_sample * coeff2l) + 0x80) >> 8;
1751
1752 previous_left_sample = current_left_sample;
1753 current_left_sample = av_clip_int16(next_left_sample);
1754
1755 *samples++ = current_left_sample;
1756 }
1757 }
1758 }
1759 bytestream2_skip(&gb, channels == 2 ? 2 : 3); // Skip terminating NULs
1760 ) /* End of CASE */
1761
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 4095 CASE(ADPCM_EA_MAXIS_XA,
1762 int coeff[2][2], shift[2];
1763
1764 for (int channel = 0; channel < channels; channel++) {
1765 int byte = bytestream2_get_byteu(&gb);
1766 for (int i = 0; i < 2; i++)
1767 coeff[channel][i] = ea_adpcm_table[(byte >> 4) + 4*i];
1768 shift[channel] = 20 - (byte & 0x0F);
1769 }
1770 for (int count1 = 0; count1 < nb_samples / 2; count1++) {
1771 int byte[2];
1772
1773 byte[0] = bytestream2_get_byteu(&gb);
1774 if (st) byte[1] = bytestream2_get_byteu(&gb);
1775 for (int i = 4; i >= 0; i-=4) { /* Pairwise samples LL RR (st) or LL LL (mono) */
1776 for (int channel = 0; channel < channels; channel++) {
1777 int sample = sign_extend(byte[channel] >> i, 4) * (1 << shift[channel]);
1778 sample = (sample +
1779 c->status[channel].sample1 * coeff[channel][0] +
1780 c->status[channel].sample2 * coeff[channel][1] + 0x80) >> 8;
1781 c->status[channel].sample2 = c->status[channel].sample1;
1782 c->status[channel].sample1 = av_clip_int16(sample);
1783 *samples++ = c->status[channel].sample1;
1784 }
1785 }
1786 }
1787 bytestream2_seek(&gb, 0, SEEK_END);
1788 ) /* End of CASE */
1789 #if CONFIG_ADPCM_EA_R1_DECODER || CONFIG_ADPCM_EA_R2_DECODER || CONFIG_ADPCM_EA_R3_DECODER
1790 400 case AV_CODEC_ID_ADPCM_EA_R1:
1791 case AV_CODEC_ID_ADPCM_EA_R2:
1792 case AV_CODEC_ID_ADPCM_EA_R3: {
1793 /* channel numbering
1794 2chan: 0=fl, 1=fr
1795 4chan: 0=fl, 1=rl, 2=fr, 3=rr
1796 6chan: 0=fl, 1=c, 2=fr, 3=rl, 4=rr, 5=sub */
1797 400 const int big_endian = avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R3;
1798 int previous_sample, current_sample, next_sample;
1799 int coeff1, coeff2;
1800 int shift;
1801 uint16_t *samplesC;
1802 400 int count = 0;
1803 int offsets[6];
1804
1805
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 1200 for (unsigned channel = 0; channel < channels; channel++)
1806
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 800 offsets[channel] = (big_endian ? bytestream2_get_be32(&gb) :
1807 550 bytestream2_get_le32(&gb)) +
1808 800 (channels + 1) * 4;
1809
1810
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 1200 for (unsigned channel = 0; channel < channels; channel++) {
1811 int count1;
1812
1813 800 bytestream2_seek(&gb, offsets[channel], SEEK_SET);
1814 800 samplesC = samples_p[channel];
1815
1816
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 800 if (avctx->codec->id == AV_CODEC_ID_ADPCM_EA_R1) {
1817 190 current_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1818 190 previous_sample = sign_extend(bytestream2_get_le16(&gb), 16);
1819 } else {
1820 610 current_sample = c->status[channel].predictor;
1821 610 previous_sample = c->status[channel].prev_sample;
1822 }
1823
1824
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 41992 for (count1 = 0; count1 < nb_samples / 28; count1++) {
1825 41192 int byte = bytestream2_get_byte(&gb);
1826
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 41192 if (byte == 0xEE) { /* only seen in R2 and R3 */
1827 12 current_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1828 12 previous_sample = sign_extend(bytestream2_get_be16(&gb), 16);
1829
1830
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 348 for (int count2 = 0; count2 < 28; count2++)
1831 336 *samplesC++ = sign_extend(bytestream2_get_be16(&gb), 16);
1832 } else {
1833 41180 coeff1 = ea_adpcm_table[ byte >> 4 ];
1834 41180 coeff2 = ea_adpcm_table[(byte >> 4) + 4];
1835 41180 shift = 20 - (byte & 0x0F);
1836
1837
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 1194220 for (int count2 = 0; count2 < 28; count2++) {
1838
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 1153040 if (count2 & 1)
1839 576520 next_sample = (unsigned)sign_extend(byte, 4) << shift;
1840 else {
1841 576520 byte = bytestream2_get_byte(&gb);
1842 576520 next_sample = (unsigned)sign_extend(byte >> 4, 4) << shift;
1843 }
1844
1845 1153040 next_sample += (current_sample * coeff1) +
1846 1153040 (previous_sample * coeff2);
1847 1153040 next_sample = av_clip_int16(next_sample >> 8);
1848
1849 1153040 previous_sample = current_sample;
1850 1153040 current_sample = next_sample;
1851 1153040 *samplesC++ = current_sample;
1852 }
1853 }
1854 }
1855
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 800 if (!count) {
1856 400 count = count1;
1857
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 400 } else if (count != count1) {
1858 ✗ av_log(avctx, AV_LOG_WARNING, "per-channel sample count mismatch\n");
1859 ✗ count = FFMAX(count, count1);
1860 }
1861
1862
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 800 if (avctx->codec->id != AV_CODEC_ID_ADPCM_EA_R1) {
1863 610 c->status[channel].predictor = current_sample;
1864 610 c->status[channel].prev_sample = previous_sample;
1865 }
1866 }
1867
1868 400 frame->nb_samples = count * 28;
1869 400 bytestream2_seek(&gb, 0, SEEK_END);
1870 400 break;
1871 }
1872 #endif /* CONFIG_ADPCM_EA_Rx_DECODER */
1873
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 53400 CASE(ADPCM_EA_XAS,
1874 for (int channel=0; channel < channels; channel++) {
1875 int coeff[2][4], shift[4];
1876 int16_t *s = samples_p[channel];
1877 for (int n = 0; n < 4; n++, s += 32) {
1878 int val = sign_extend(bytestream2_get_le16u(&gb), 16);
1879 for (int i = 0; i < 2; i++)
1880 coeff[i][n] = ea_adpcm_table[(val&0x0F)+4*i];
1881 s[0] = val & ~0x0F;
1882
1883 val = sign_extend(bytestream2_get_le16u(&gb), 16);
1884 shift[n] = 20 - (val & 0x0F);
1885 s[1] = val & ~0x0F;
1886 }
1887
1888 for (int m = 2; m < 32; m += 2) {
1889 s = &samples_p[channel][m];
1890 for (int n = 0; n < 4; n++, s += 32) {
1891 int level, pred;
1892 int byte = bytestream2_get_byteu(&gb);
1893
1894 level = sign_extend(byte >> 4, 4) * (1 << shift[n]);
1895 pred = s[-1] * coeff[0][n] + s[-2] * coeff[1][n];
1896 s[0] = av_clip_int16((level + pred + 0x80) >> 8);
1897
1898 level = sign_extend(byte, 4) * (1 << shift[n]);
1899 pred = s[0] * coeff[0][n] + s[-1] * coeff[1][n];
1900 s[1] = av_clip_int16((level + pred + 0x80) >> 8);
1901 }
1902 }
1903 }
1904 ) /* End of CASE */
1905 ✗ CASE(ADPCM_IMA_ACORN,
1906 for (int channel = 0; channel < channels; channel++) {
1907 ADPCMChannelStatus *cs = &c->status[channel];
1908 cs->predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1909 cs->step_index = bytestream2_get_le16u(&gb) & 0xFF;
1910 if (cs->step_index > 88u){
1911 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index[%d] = %i\n",
1912 channel, cs->step_index);
1913 return AVERROR_INVALIDDATA;
1914 }
1915 }
1916 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1917 int byte = bytestream2_get_byteu(&gb);
1918 *samples++ = adpcm_ima_expand_nibble(&c->status[0], byte & 0x0F, 3);
1919 *samples++ = adpcm_ima_expand_nibble(&c->status[st], byte >> 4, 3);
1920 }
1921 ) /* End of CASE */
1922
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 112470 CASE(ADPCM_IMA_AMV,
1923 av_assert0(channels == 1);
1924
1925 /*
1926 * Header format:
1927 * int16_t predictor;
1928 * uint8_t step_index;
1929 * uint8_t reserved;
1930 * uint32_t frame_size;
1931 *
1932 * Some implementations have step_index as 16-bits, but others
1933 * only use the lower 8 and store garbage in the upper 8.
1934 */
1935 c->status[0].predictor = sign_extend(bytestream2_get_le16u(&gb), 16);
1936 c->status[0].step_index = bytestream2_get_byteu(&gb);
1937 bytestream2_skipu(&gb, 5);
1938 if (c->status[0].step_index > 88u) {
1939 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1940 c->status[0].step_index);
1941 return AVERROR_INVALIDDATA;
1942 }
1943
1944 for (int n = nb_samples >> 1; n > 0; n--) {
1945 int v = bytestream2_get_byteu(&gb);
1946
1947 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4, 3);
1948 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v & 0xf, 3);
1949 }
1950
1951 if (nb_samples & 1) {
1952 int v = bytestream2_get_byteu(&gb);
1953 *samples++ = adpcm_ima_expand_nibble(&c->status[0], v >> 4, 3);
1954
1955 if (v & 0x0F) {
1956 /* Holds true on all the http://samples.mplayerhq.hu/amv samples. */
1957 av_log(avctx, AV_LOG_WARNING, "Last nibble set on packet with odd sample count.\n");
1958 av_log(avctx, AV_LOG_WARNING, "Sample will be skipped.\n");
1959 }
1960 }
1961 ) /* End of CASE */
1962
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 90300 CASE(ADPCM_IMA_SMJPEG,
1963 for (int i = 0; i < channels; i++) {
1964 c->status[i].predictor = sign_extend(bytestream2_get_be16u(&gb), 16);
1965 c->status[i].step_index = bytestream2_get_byteu(&gb);
1966 bytestream2_skipu(&gb, 1);
1967 if (c->status[i].step_index > 88u) {
1968 av_log(avctx, AV_LOG_ERROR, "ERROR: step_index = %i\n",
1969 c->status[i].step_index);
1970 return AVERROR_INVALIDDATA;
1971 }
1972 }
1973
1974 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1975 int v = bytestream2_get_byteu(&gb);
1976
1977 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[0 ], v >> 4 );
1978 *samples++ = adpcm_ima_qt_expand_nibble(&c->status[st], v & 0xf);
1979 }
1980 ) /* End of CASE */
1981
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 262224 CASE(ADPCM_CT,
1982 for (int n = nb_samples >> (1 - st); n > 0; n--) {
1983 int v = bytestream2_get_byteu(&gb);
1984 *samples++ = adpcm_ct_expand_nibble(&c->status[0 ], v >> 4 );
1985 *samples++ = adpcm_ct_expand_nibble(&c->status[st], v & 0x0F);
1986 }
1987 ) /* End of CASE */
1988 #if CONFIG_ADPCM_SBPRO_2_DECODER || CONFIG_ADPCM_SBPRO_3_DECODER || \
1989 CONFIG_ADPCM_SBPRO_4_DECODER
1990 57 case AV_CODEC_ID_ADPCM_SBPRO_4:
1991 case AV_CODEC_ID_ADPCM_SBPRO_3:
1992 case AV_CODEC_ID_ADPCM_SBPRO_2:
1993
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 57 if (!c->status[0].step_index) {
1994 /* the first byte is a raw sample */
1995 3 *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1996
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 3 if (st)
1997 ✗ *samples++ = 128 * (bytestream2_get_byteu(&gb) - 0x80);
1998 3 c->status[0].step_index = 1;
1999 3 nb_samples--;
2000 }
2001
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 57 if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_4) {
2002
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 52256 for (int n = nb_samples >> (1 - st); n > 0; n--) {
2003 52230 int byte = bytestream2_get_byteu(&gb);
2004 104460 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2005 52230 byte >> 4, 4, 0);
2006 52230 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
2007 52230 byte & 0x0F, 4, 0);
2008 }
2009
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 31 } else if (avctx->codec->id == AV_CODEC_ID_ADPCM_SBPRO_3) {
2010
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 34838 for (int n = (nb_samples<<st) / 3; n > 0; n--) {
2011 34820 int byte = bytestream2_get_byteu(&gb);
2012 69640 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2013 34820 byte >> 5 , 3, 0);
2014 69640 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2015 34820 (byte >> 2) & 0x07, 3, 0);
2016 34820 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2017 34820 byte & 0x03, 2, 0);
2018 }
2019 } else {
2020
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 26128 for (int n = nb_samples >> (2 - st); n > 0; n--) {
2021 26115 int byte = bytestream2_get_byteu(&gb);
2022 52230 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2023 26115 byte >> 6 , 2, 2);
2024 52230 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
2025 26115 (byte >> 4) & 0x03, 2, 2);
2026 52230 *samples++ = adpcm_sbpro_expand_nibble(&c->status[0],
2027 26115 (byte >> 2) & 0x03, 2, 2);
2028 26115 *samples++ = adpcm_sbpro_expand_nibble(&c->status[st],
2029 26115 byte & 0x03, 2, 2);
2030 }
2031 }
2032 57 break;
2033 #endif /* CONFIG_ADPCM_SBPRO_x_DECODER */
2034 195 CASE(ADPCM_SWF,
2035 adpcm_swf_decode(avctx, buf, buf_size, samples);
2036 bytestream2_seek(&gb, 0, SEEK_END);
2037 ) /* End of CASE */
2038
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 553096 CASE(ADPCM_YAMAHA,
2039 for (int n = nb_samples >> (1 - st); n > 0; n--) {
2040 int v = bytestream2_get_byteu(&gb);
2041 *samples++ = adpcm_yamaha_expand_nibble(&c->status[0 ], v & 0x0F);
2042 *samples++ = adpcm_yamaha_expand_nibble(&c->status[st], v >> 4 );
2043 }
2044 ) /* End of CASE */
2045 ✗ CASE(ADPCM_AICA,
2046 for (int channel = 0; channel < channels; channel++) {
2047 samples = samples_p[channel];
2048 for (int n = nb_samples >> 1; n > 0; n--) {
2049 int v = bytestream2_get_byteu(&gb);
2050 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v & 0x0F);
2051 *samples++ = adpcm_yamaha_expand_nibble(&c->status[channel], v >> 4 );
2052 }
2053 }
2054 ) /* End of CASE */
2055
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 457008 CASE(ADPCM_AFC,
2056 int samples_per_block;
2057 int blocks;
2058
2059 if (avctx->extradata && avctx->extradata_size == 1 && avctx->extradata[0]) {
2060 samples_per_block = avctx->extradata[0] / 16;
2061 blocks = nb_samples / avctx->extradata[0];
2062 } else {
2063 samples_per_block = nb_samples / 16;
2064 blocks = 1;
2065 }
2066
2067 for (int m = 0; m < blocks; m++) {
2068 for (int channel = 0; channel < channels; channel++) {
2069 int prev1 = c->status[channel].sample1;
2070 int prev2 = c->status[channel].sample2;
2071
2072 samples = samples_p[channel] + m * 16;
2073 /* Read in every sample for this channel. */
2074 for (int i = 0; i < samples_per_block; i++) {
2075 int byte = bytestream2_get_byteu(&gb);
2076 int scale = 1 << (byte >> 4);
2077 int index = byte & 0xf;
2078 int factor1 = afc_coeffs[0][index];
2079 int factor2 = afc_coeffs[1][index];
2080
2081 /* Decode 16 samples. */
2082 for (int n = 0; n < 16; n++) {
2083 int32_t sampledat;
2084
2085 if (n & 1) {
2086 sampledat = sign_extend(byte, 4);
2087 } else {
2088 byte = bytestream2_get_byteu(&gb);
2089 sampledat = sign_extend(byte >> 4, 4);
2090 }
2091
2092 sampledat = ((prev1 * factor1 + prev2 * factor2) >> 11) +
2093 sampledat * scale;
2094 *samples = av_clip_int16(sampledat);
2095 prev2 = prev1;
2096 prev1 = *samples++;
2097 }
2098 }
2099
2100 c->status[channel].sample1 = prev1;
2101 c->status[channel].sample2 = prev2;
2102 }
2103 }
2104 bytestream2_seek(&gb, 0, SEEK_END);
2105 ) /* End of CASE */
2106 #if CONFIG_ADPCM_THP_DECODER || CONFIG_ADPCM_THP_LE_DECODER
2107 71 case AV_CODEC_ID_ADPCM_THP:
2108 case AV_CODEC_ID_ADPCM_THP_LE:
2109 {
2110 int table[14][16];
2111
2112 #define THP_GET16(g) \
2113 sign_extend( \
2114 avctx->codec->id == AV_CODEC_ID_ADPCM_THP_LE ? \
2115 bytestream2_get_le16u(&(g)) : \
2116 bytestream2_get_be16u(&(g)), 16)
2117
2118
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 71 if (avctx->extradata) {
2119 GetByteContext tb;
2120 ✗ if (avctx->extradata_size < 32 * channels) {
2121 ✗ av_log(avctx, AV_LOG_ERROR, "Missing coeff table\n");
2122 ✗ return AVERROR_INVALIDDATA;
2123 }
2124
2125 ✗ bytestream2_init(&tb, avctx->extradata, avctx->extradata_size);
2126 ✗ for (int i = 0; i < channels; i++)
2127 ✗ for (int n = 0; n < 16; n++)
2128 ✗ table[i][n] = THP_GET16(tb);
2129 } else {
2130
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 213 for (int i = 0; i < channels; i++)
2131
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 2414 for (int n = 0; n < 16; n++)
2132
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 2272 table[i][n] = THP_GET16(gb);
2133
2134
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 71 if (!c->has_status) {
2135 /* Initialize the previous sample. */
2136
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 3 for (int i = 0; i < channels; i++) {
2137
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 2 c->status[i].sample1 = THP_GET16(gb);
2138
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 2 c->status[i].sample2 = THP_GET16(gb);
2139 }
2140 1 c->has_status = 1;
2141 } else {
2142 70 bytestream2_skip(&gb, channels * 4);
2143 }
2144 }
2145
2146
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 213 for (int ch = 0; ch < channels; ch++) {
2147 142 samples = samples_p[ch];
2148
2149 /* Read in every sample for this channel. */
2150
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 10982 for (int i = 0; i < (nb_samples + 13) / 14; i++) {
2151 10840 int byte = bytestream2_get_byteu(&gb);
2152 10840 int index = (byte >> 4) & 7;
2153 10840 unsigned int exp = byte & 0x0F;
2154 10840 int64_t factor1 = table[ch][index * 2];
2155 10840 int64_t factor2 = table[ch][index * 2 + 1];
2156
2157 /* Decode 14 samples. */
2158
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 162600 for (int n = 0; n < 14 && (i * 14 + n < nb_samples); n++) {
2159 int32_t sampledat;
2160
2161
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 151760 if (n & 1) {
2162 75880 sampledat = sign_extend(byte, 4);
2163 } else {
2164 75880 byte = bytestream2_get_byteu(&gb);
2165 75880 sampledat = sign_extend(byte >> 4, 4);
2166 }
2167
2168 151760 sampledat = ((c->status[ch].sample1 * factor1
2169 151760 + c->status[ch].sample2 * factor2) >> 11) + sampledat * (1 << exp);
2170 151760 *samples = av_clip_int16(sampledat);
2171 151760 c->status[ch].sample2 = c->status[ch].sample1;
2172 151760 c->status[ch].sample1 = *samples++;
2173 }
2174 }
2175 }
2176 71 break;
2177 }
2178 #endif /* CONFIG_ADPCM_THP(_LE)_DECODER */
2179
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 59488 CASE(ADPCM_DTK,
2180 for (int channel = 0; channel < channels; channel++) {
2181 samples = samples_p[channel];
2182
2183 /* Read in every sample for this channel. */
2184 for (int i = 0; i < nb_samples / 28; i++) {
2185 int byte, header;
2186 if (channel)
2187 bytestream2_skipu(&gb, 1);
2188 header = bytestream2_get_byteu(&gb);
2189 bytestream2_skipu(&gb, 3 - channel);
2190
2191 /* Decode 28 samples. */
2192 for (int n = 0; n < 28; n++) {
2193 int32_t sampledat, prev;
2194
2195 switch (header >> 4) {
2196 case 1:
2197 prev = (c->status[channel].sample1 * 0x3c);
2198 break;
2199 case 2:
2200 prev = (c->status[channel].sample1 * 0x73) - (c->status[channel].sample2 * 0x34);
2201 break;
2202 case 3:
2203 prev = (c->status[channel].sample1 * 0x62) - (c->status[channel].sample2 * 0x37);
2204 break;
2205 default:
2206 prev = 0;
2207 }
2208
2209 prev = av_clip_intp2((prev + 0x20) >> 6, 21);
2210
2211 byte = bytestream2_get_byteu(&gb);
2212 if (!channel)
2213 sampledat = sign_extend(byte, 4);
2214 else
2215 sampledat = sign_extend(byte >> 4, 4);
2216
2217 sampledat = ((sampledat * (1 << 12)) >> (header & 0xf)) * (1 << 6) + prev;
2218 *samples++ = av_clip_int16(sampledat >> 6);
2219 c->status[channel].sample2 = c->status[channel].sample1;
2220 c->status[channel].sample1 = sampledat;
2221 }
2222 }
2223 if (!channel)
2224 bytestream2_seek(&gb, 0, SEEK_SET);
2225 }
2226 ) /* End of CASE */
2227 ✗ CASE(ADPCM_PSX,
2228 for (int block = 0; block < avpkt->size / FFMAX(avctx->block_align, 16 * channels); block++) {
2229 int nb_samples_per_block = 28 * FFMAX(avctx->block_align, 16 * channels) / (16 * channels);
2230 for (int channel = 0; channel < channels; channel++) {
2231 samples = samples_p[channel] + block * nb_samples_per_block;
2232 av_assert0((block + 1) * nb_samples_per_block <= nb_samples);
2233
2234 /* Read in every sample for this channel. */
2235 for (int i = 0; i < nb_samples_per_block / 28; i++) {
2236 int filter, shift, flag, byte;
2237
2238 filter = bytestream2_get_byteu(&gb);
2239 shift = filter & 0xf;
2240 filter = filter >> 4;
2241 if (filter >= FF_ARRAY_ELEMS(xa_adpcm_table))
2242 return AVERROR_INVALIDDATA;
2243 flag = bytestream2_get_byteu(&gb) & 0x7;
2244
2245 /* Decode 28 samples. */
2246 for (int n = 0; n < 28; n++) {
2247 int sample = 0, scale;
2248
2249 if (n & 1) {
2250 scale = sign_extend(byte >> 4, 4);
2251 } else {
2252 byte = bytestream2_get_byteu(&gb);
2253 scale = sign_extend(byte, 4);
2254 }
2255
2256 if (flag < 0x07) {
2257 scale = scale * (1 << 12);
2258 sample = (int)((scale >> shift) + (c->status[channel].sample1 * xa_adpcm_table[filter][0] + c->status[channel].sample2 * xa_adpcm_table[filter][1]) / 64);
2259 }
2260 *samples++ = av_clip_int16(sample);
2261 c->status[channel].sample2 = c->status[channel].sample1;
2262 c->status[channel].sample1 = sample;
2263 }
2264 }
2265 }
2266 }
2267 ) /* End of CASE */
2268
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 825193 CASE(ADPCM_ARGO,
2269 /*
2270 * The format of each block:
2271 * uint8_t left_control;
2272 * uint4_t left_samples[nb_samples];
2273 * ---- and if stereo ----
2274 * uint8_t right_control;
2275 * uint4_t right_samples[nb_samples];
2276 *
2277 * Format of the control byte:
2278 * MSB [SSSSRDRR] LSB
2279 * S = (Shift Amount - 2)
2280 * D = Decoder flag.
2281 * R = Reserved
2282 *
2283 * Each block relies on the previous two samples of each channel.
2284 * They should be 0 initially.
2285 */
2286 for (int block = 0; block < avpkt->size / avctx->block_align; block++) {
2287 for (int channel = 0; channel < avctx->ch_layout.nb_channels; channel++) {
2288 ADPCMChannelStatus *cs = c->status + channel;
2289 int control, shift;
2290
2291 samples = samples_p[channel] + block * 32;
2292
2293 /* Get the control byte and decode the samples, 2 at a time. */
2294 control = bytestream2_get_byteu(&gb);
2295 shift = (control >> 4) + 2;
2296
2297 for (int n = 0; n < 16; n++) {
2298 int sample = bytestream2_get_byteu(&gb);
2299 *samples++ = ff_adpcm_argo_expand_nibble(cs, sample >> 4, shift, control & 0x04);
2300 *samples++ = ff_adpcm_argo_expand_nibble(cs, sample >> 0, shift, control & 0x04);
2301 }
2302 }
2303 }
2304 ) /* End of CASE */
2305 ✗ CASE(ADPCM_ZORK,
2306 for (int n = 0; n < nb_samples * channels; n++) {
2307 int v = bytestream2_get_byteu(&gb);
2308 *samples++ = adpcm_zork_expand_nibble(&c->status[n % channels], v);
2309 }
2310 ) /* End of CASE */
2311 ✗ CASE(ADPCM_IMA_MTF,
2312 for (int n = nb_samples / 2; n > 0; n--) {
2313 for (int channel = 0; channel < channels; channel++) {
2314 int v = bytestream2_get_byteu(&gb);
2315 *samples++ = adpcm_ima_mtf_expand_nibble(&c->status[channel], v >> 4);
2316 samples[st] = adpcm_ima_mtf_expand_nibble(&c->status[channel], v & 0x0F);
2317 }
2318 samples += channels;
2319 }
2320 ) /* End of CASE */
2321 ✗ default:
2322 ✗ av_assert0(0); // unsupported codec_id should not happen
2323 }
2324
2325
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 37698 if (avpkt->size && bytestream2_tell(&gb) == 0) {
2326 ✗ av_log(avctx, AV_LOG_ERROR, "Nothing consumed\n");
2327 ✗ return AVERROR_INVALIDDATA;
2328 }
2329
2330 37698 *got_frame_ptr = 1;
2331
2332
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 37698 if (avpkt->size < bytestream2_tell(&gb)) {
2333 ✗ av_log(avctx, AV_LOG_ERROR, "Overread of %d < %d\n", avpkt->size, bytestream2_tell(&gb));
2334 ✗ return avpkt->size;
2335 }
2336
2337 37698 return bytestream2_tell(&gb);
2338 }
2339
2340 187 static void adpcm_flush(AVCodecContext *avctx)
2341 {
2342 187 ADPCMDecodeContext *c = avctx->priv_data;
2343
2344 /* Just nuke the entire state and re-init. */
2345 187 memset(c, 0, sizeof(ADPCMDecodeContext));
2346
2347
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 187 switch(avctx->codec_id) {
2348 2 case AV_CODEC_ID_ADPCM_CT:
2349 2 c->status[0].step = c->status[1].step = 511;
2350 2 break;
2351
2352 3 case AV_CODEC_ID_ADPCM_IMA_APC:
2353
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 3 if (avctx->extradata && avctx->extradata_size >= 8) {
2354 2 c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata ), 18);
2355 2 c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18);
2356 }
2357 3 break;
2358
2359 6 case AV_CODEC_ID_ADPCM_IMA_APM:
2360
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 6 if (avctx->extradata && avctx->extradata_size >= 28) {
2361 6 c->status[0].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 16), 18);
2362 6 c->status[0].step_index = av_clip(AV_RL32(avctx->extradata + 20), 0, 88);
2363 6 c->status[1].predictor = av_clip_intp2(AV_RL32(avctx->extradata + 4), 18);
2364 6 c->status[1].step_index = av_clip(AV_RL32(avctx->extradata + 8), 0, 88);
2365 }
2366 6 break;
2367
2368 8 case AV_CODEC_ID_ADPCM_IMA_WS:
2369
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 8 if (avctx->extradata && avctx->extradata_size >= 2)
2370 5 c->vqa_version = AV_RL16(avctx->extradata);
2371 8 break;
2372 168 default:
2373 /* Other codecs may want to handle this during decoding. */
2374 168 c->has_status = 0;
2375 168 return;
2376 }
2377
2378 19 c->has_status = 1;
2379 }
2380
2381
2382 static const enum AVSampleFormat sample_fmts_s16[] = { AV_SAMPLE_FMT_S16,
2383 AV_SAMPLE_FMT_NONE };
2384 static const enum AVSampleFormat sample_fmts_s16p[] = { AV_SAMPLE_FMT_S16P,
2385 AV_SAMPLE_FMT_NONE };
2386 static const enum AVSampleFormat sample_fmts_both[] = { AV_SAMPLE_FMT_S16,
2387 AV_SAMPLE_FMT_S16P,
2388 AV_SAMPLE_FMT_NONE };
2389
2390 #define ADPCM_DECODER_0(id_, sample_fmts_, name_, long_name_)
2391 #define ADPCM_DECODER_1(id_, sample_fmts_, name_, long_name_) \
2392 const FFCodec ff_ ## name_ ## _decoder = { \
2393 .p.name = #name_, \
2394 CODEC_LONG_NAME(long_name_), \
2395 .p.type = AVMEDIA_TYPE_AUDIO, \
2396 .p.id = id_, \
2397 .p.capabilities = AV_CODEC_CAP_DR1, \
2398 CODEC_SAMPLEFMTS_ARRAY(sample_fmts_), \
2399 .priv_data_size = sizeof(ADPCMDecodeContext), \
2400 .init = adpcm_decode_init, \
2401 FF_CODEC_DECODE_CB(adpcm_decode_frame), \
2402 .flush = adpcm_flush, \
2403 };
2404 #define ADPCM_DECODER_2(enabled, codec_id, name, sample_fmts, long_name) \
2405 ADPCM_DECODER_ ## enabled(codec_id, name, sample_fmts, long_name)
2406 #define ADPCM_DECODER_3(config, codec_id, name, sample_fmts, long_name) \
2407 ADPCM_DECODER_2(config, codec_id, name, sample_fmts, long_name)
2408 #define ADPCM_DECODER(codec, name, sample_fmts, long_name) \
2409 ADPCM_DECODER_3(CONFIG_ ## codec ## _DECODER, AV_CODEC_ID_ ## codec, \
2410 name, sample_fmts, long_name)
2411
2412 /* Note: Do not forget to add new entries to the Makefile as well. */
2413 ADPCM_DECODER(ADPCM_4XM, sample_fmts_s16p, adpcm_4xm, "ADPCM 4X Movie")
2414 ADPCM_DECODER(ADPCM_AFC, sample_fmts_s16p, adpcm_afc, "ADPCM Nintendo Gamecube AFC")
2415 ADPCM_DECODER(ADPCM_AGM, sample_fmts_s16, adpcm_agm, "ADPCM AmuseGraphics Movie")
2416 ADPCM_DECODER(ADPCM_AICA, sample_fmts_s16p, adpcm_aica, "ADPCM Yamaha AICA")
2417 ADPCM_DECODER(ADPCM_ARGO, sample_fmts_s16p, adpcm_argo, "ADPCM Argonaut Games")
2418 ADPCM_DECODER(ADPCM_CT, sample_fmts_s16, adpcm_ct, "ADPCM Creative Technology")
2419 ADPCM_DECODER(ADPCM_DTK, sample_fmts_s16p, adpcm_dtk, "ADPCM Nintendo Gamecube DTK")
2420 ADPCM_DECODER(ADPCM_EA, sample_fmts_s16, adpcm_ea, "ADPCM Electronic Arts")
2421 ADPCM_DECODER(ADPCM_EA_MAXIS_XA, sample_fmts_s16, adpcm_ea_maxis_xa, "ADPCM Electronic Arts Maxis CDROM XA")
2422 ADPCM_DECODER(ADPCM_EA_R1, sample_fmts_s16p, adpcm_ea_r1, "ADPCM Electronic Arts R1")
2423 ADPCM_DECODER(ADPCM_EA_R2, sample_fmts_s16p, adpcm_ea_r2, "ADPCM Electronic Arts R2")
2424 ADPCM_DECODER(ADPCM_EA_R3, sample_fmts_s16p, adpcm_ea_r3, "ADPCM Electronic Arts R3")
2425 ADPCM_DECODER(ADPCM_EA_XAS, sample_fmts_s16p, adpcm_ea_xas, "ADPCM Electronic Arts XAS")
2426 ADPCM_DECODER(ADPCM_IMA_ACORN, sample_fmts_s16, adpcm_ima_acorn, "ADPCM IMA Acorn Replay")
2427 ADPCM_DECODER(ADPCM_IMA_AMV, sample_fmts_s16, adpcm_ima_amv, "ADPCM IMA AMV")
2428 ADPCM_DECODER(ADPCM_IMA_APC, sample_fmts_s16, adpcm_ima_apc, "ADPCM IMA CRYO APC")
2429 ADPCM_DECODER(ADPCM_IMA_APM, sample_fmts_s16, adpcm_ima_apm, "ADPCM IMA Ubisoft APM")
2430 ADPCM_DECODER(ADPCM_IMA_CUNNING, sample_fmts_s16p, adpcm_ima_cunning, "ADPCM IMA Cunning Developments")
2431 ADPCM_DECODER(ADPCM_IMA_DAT4, sample_fmts_s16, adpcm_ima_dat4, "ADPCM IMA Eurocom DAT4")
2432 ADPCM_DECODER(ADPCM_IMA_DK3, sample_fmts_s16, adpcm_ima_dk3, "ADPCM IMA Duck DK3")
2433 ADPCM_DECODER(ADPCM_IMA_DK4, sample_fmts_s16, adpcm_ima_dk4, "ADPCM IMA Duck DK4")
2434 ADPCM_DECODER(ADPCM_IMA_EA_EACS, sample_fmts_s16, adpcm_ima_ea_eacs, "ADPCM IMA Electronic Arts EACS")
2435 ADPCM_DECODER(ADPCM_IMA_EA_SEAD, sample_fmts_s16, adpcm_ima_ea_sead, "ADPCM IMA Electronic Arts SEAD")
2436 ADPCM_DECODER(ADPCM_IMA_ISS, sample_fmts_s16, adpcm_ima_iss, "ADPCM IMA Funcom ISS")
2437 ADPCM_DECODER(ADPCM_IMA_MOFLEX, sample_fmts_s16p, adpcm_ima_moflex, "ADPCM IMA MobiClip MOFLEX")
2438 ADPCM_DECODER(ADPCM_IMA_MTF, sample_fmts_s16, adpcm_ima_mtf, "ADPCM IMA Capcom's MT Framework")
2439 ADPCM_DECODER(ADPCM_IMA_OKI, sample_fmts_s16, adpcm_ima_oki, "ADPCM IMA Dialogic OKI")
2440 ADPCM_DECODER(ADPCM_IMA_QT, sample_fmts_s16p, adpcm_ima_qt, "ADPCM IMA QuickTime")
2441 ADPCM_DECODER(ADPCM_IMA_RAD, sample_fmts_s16, adpcm_ima_rad, "ADPCM IMA Radical")
2442 ADPCM_DECODER(ADPCM_IMA_SSI, sample_fmts_s16, adpcm_ima_ssi, "ADPCM IMA Simon & Schuster Interactive")
2443 ADPCM_DECODER(ADPCM_IMA_SMJPEG, sample_fmts_s16, adpcm_ima_smjpeg, "ADPCM IMA Loki SDL MJPEG")
2444 ADPCM_DECODER(ADPCM_IMA_ALP, sample_fmts_s16, adpcm_ima_alp, "ADPCM IMA High Voltage Software ALP")
2445 ADPCM_DECODER(ADPCM_IMA_WAV, sample_fmts_s16p, adpcm_ima_wav, "ADPCM IMA WAV")
2446 ADPCM_DECODER(ADPCM_IMA_WS, sample_fmts_both, adpcm_ima_ws, "ADPCM IMA Westwood")
2447 ADPCM_DECODER(ADPCM_IMA_XBOX, sample_fmts_s16p, adpcm_ima_xbox, "ADPCM IMA Xbox")
2448 ADPCM_DECODER(ADPCM_MS, sample_fmts_both, adpcm_ms, "ADPCM Microsoft")
2449 ADPCM_DECODER(ADPCM_MTAF, sample_fmts_s16p, adpcm_mtaf, "ADPCM MTAF")
2450 ADPCM_DECODER(ADPCM_PSX, sample_fmts_s16p, adpcm_psx, "ADPCM Playstation")
2451 ADPCM_DECODER(ADPCM_SBPRO_2, sample_fmts_s16, adpcm_sbpro_2, "ADPCM Sound Blaster Pro 2-bit")
2452 ADPCM_DECODER(ADPCM_SBPRO_3, sample_fmts_s16, adpcm_sbpro_3, "ADPCM Sound Blaster Pro 2.6-bit")
2453 ADPCM_DECODER(ADPCM_SBPRO_4, sample_fmts_s16, adpcm_sbpro_4, "ADPCM Sound Blaster Pro 4-bit")
2454 ADPCM_DECODER(ADPCM_SWF, sample_fmts_s16, adpcm_swf, "ADPCM Shockwave Flash")
2455 ADPCM_DECODER(ADPCM_THP_LE, sample_fmts_s16p, adpcm_thp_le, "ADPCM Nintendo THP (little-endian)")
2456 ADPCM_DECODER(ADPCM_THP, sample_fmts_s16p, adpcm_thp, "ADPCM Nintendo THP")
2457 ADPCM_DECODER(ADPCM_XA, sample_fmts_s16p, adpcm_xa, "ADPCM CDROM XA")
2458 ADPCM_DECODER(ADPCM_XMD, sample_fmts_s16p, adpcm_xmd, "ADPCM Konami XMD")
2459 ADPCM_DECODER(ADPCM_YAMAHA, sample_fmts_s16, adpcm_yamaha, "ADPCM Yamaha")
2460 ADPCM_DECODER(ADPCM_ZORK, sample_fmts_s16, adpcm_zork, "ADPCM Zork")
2461