FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/takdec.c
Date: 2026-05-02 03:33:10
Exec Total Coverage
Lines: 352 525 67.0%
Functions: 12 13 92.3%
Branches: 181 329 55.0%
Line Branch Exec Source
1 /*
2 * TAK decoder
3 * Copyright (c) 2012 Paul B Mahol
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * TAK (Tom's lossless Audio Kompressor) decoder
25 * @author Paul B Mahol
26 */
27
28 #include "libavutil/attributes.h"
29 #include "libavutil/internal.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/mem_internal.h"
32 #include "libavutil/samplefmt.h"
33
34 #define CACHED_BITSTREAM_READER !ARCH_X86_32
35 #define BITSTREAM_READER_LE
36 #include "audiodsp.h"
37 #include "thread.h"
38 #include "avcodec.h"
39 #include "codec_internal.h"
40 #include "unary.h"
41 #include "tak.h"
42 #include "takdsp.h"
43
44 #define MAX_SUBFRAMES 8 ///< max number of subframes per channel
45 #define MAX_PREDICTORS 256
46
47 typedef struct MCDParam {
48 int8_t present; ///< decorrelation parameter availability for this channel
49 int8_t index; ///< index into array of decorrelation types
50 int8_t chan1;
51 int8_t chan2;
52 } MCDParam;
53
54 typedef struct TAKDecContext {
55 AVCodecContext *avctx; ///< parent AVCodecContext
56 AudioDSPContext adsp;
57 TAKDSPContext tdsp;
58 TAKStreamInfo ti;
59 GetBitContext gb; ///< bitstream reader initialized to start at the current frame
60
61 int uval;
62 int nb_samples; ///< number of samples in the current frame
63 uint8_t *decode_buffer;
64 unsigned int decode_buffer_size;
65 int32_t *decoded[TAK_MAX_CHANNELS]; ///< decoded samples for each channel
66
67 int8_t lpc_mode[TAK_MAX_CHANNELS];
68 int8_t sample_shift[TAK_MAX_CHANNELS]; ///< shift applied to every sample in the channel
69 int16_t predictors[MAX_PREDICTORS];
70 int nb_subframes; ///< number of subframes in the current frame
71 int16_t subframe_len[MAX_SUBFRAMES]; ///< subframe length in samples
72 int subframe_scale;
73
74 int8_t dmode; ///< channel decorrelation type in the current frame
75
76 MCDParam mcdparams[TAK_MAX_CHANNELS]; ///< multichannel decorrelation parameters
77
78 int8_t coding_mode[128];
79 DECLARE_ALIGNED(16, int16_t, filter)[MAX_PREDICTORS];
80 DECLARE_ALIGNED(16, int16_t, residues)[544];
81 } TAKDecContext;
82
83 static const int8_t mc_dmodes[] = { 1, 3, 4, 6, };
84
85 static const uint16_t predictor_sizes[] = {
86 4, 8, 12, 16, 24, 32, 48, 64, 80, 96, 128, 160, 192, 224, 256, 0,
87 };
88
89 static const struct CParam {
90 int init;
91 int escape;
92 int scale;
93 int aescape;
94 int bias;
95 } xcodes[50] = {
96 { 0x01, 0x0000001, 0x0000001, 0x0000003, 0x0000008 },
97 { 0x02, 0x0000003, 0x0000001, 0x0000007, 0x0000006 },
98 { 0x03, 0x0000005, 0x0000002, 0x000000E, 0x000000D },
99 { 0x03, 0x0000003, 0x0000003, 0x000000D, 0x0000018 },
100 { 0x04, 0x000000B, 0x0000004, 0x000001C, 0x0000019 },
101 { 0x04, 0x0000006, 0x0000006, 0x000001A, 0x0000030 },
102 { 0x05, 0x0000016, 0x0000008, 0x0000038, 0x0000032 },
103 { 0x05, 0x000000C, 0x000000C, 0x0000034, 0x0000060 },
104 { 0x06, 0x000002C, 0x0000010, 0x0000070, 0x0000064 },
105 { 0x06, 0x0000018, 0x0000018, 0x0000068, 0x00000C0 },
106 { 0x07, 0x0000058, 0x0000020, 0x00000E0, 0x00000C8 },
107 { 0x07, 0x0000030, 0x0000030, 0x00000D0, 0x0000180 },
108 { 0x08, 0x00000B0, 0x0000040, 0x00001C0, 0x0000190 },
109 { 0x08, 0x0000060, 0x0000060, 0x00001A0, 0x0000300 },
110 { 0x09, 0x0000160, 0x0000080, 0x0000380, 0x0000320 },
111 { 0x09, 0x00000C0, 0x00000C0, 0x0000340, 0x0000600 },
112 { 0x0A, 0x00002C0, 0x0000100, 0x0000700, 0x0000640 },
113 { 0x0A, 0x0000180, 0x0000180, 0x0000680, 0x0000C00 },
114 { 0x0B, 0x0000580, 0x0000200, 0x0000E00, 0x0000C80 },
115 { 0x0B, 0x0000300, 0x0000300, 0x0000D00, 0x0001800 },
116 { 0x0C, 0x0000B00, 0x0000400, 0x0001C00, 0x0001900 },
117 { 0x0C, 0x0000600, 0x0000600, 0x0001A00, 0x0003000 },
118 { 0x0D, 0x0001600, 0x0000800, 0x0003800, 0x0003200 },
119 { 0x0D, 0x0000C00, 0x0000C00, 0x0003400, 0x0006000 },
120 { 0x0E, 0x0002C00, 0x0001000, 0x0007000, 0x0006400 },
121 { 0x0E, 0x0001800, 0x0001800, 0x0006800, 0x000C000 },
122 { 0x0F, 0x0005800, 0x0002000, 0x000E000, 0x000C800 },
123 { 0x0F, 0x0003000, 0x0003000, 0x000D000, 0x0018000 },
124 { 0x10, 0x000B000, 0x0004000, 0x001C000, 0x0019000 },
125 { 0x10, 0x0006000, 0x0006000, 0x001A000, 0x0030000 },
126 { 0x11, 0x0016000, 0x0008000, 0x0038000, 0x0032000 },
127 { 0x11, 0x000C000, 0x000C000, 0x0034000, 0x0060000 },
128 { 0x12, 0x002C000, 0x0010000, 0x0070000, 0x0064000 },
129 { 0x12, 0x0018000, 0x0018000, 0x0068000, 0x00C0000 },
130 { 0x13, 0x0058000, 0x0020000, 0x00E0000, 0x00C8000 },
131 { 0x13, 0x0030000, 0x0030000, 0x00D0000, 0x0180000 },
132 { 0x14, 0x00B0000, 0x0040000, 0x01C0000, 0x0190000 },
133 { 0x14, 0x0060000, 0x0060000, 0x01A0000, 0x0300000 },
134 { 0x15, 0x0160000, 0x0080000, 0x0380000, 0x0320000 },
135 { 0x15, 0x00C0000, 0x00C0000, 0x0340000, 0x0600000 },
136 { 0x16, 0x02C0000, 0x0100000, 0x0700000, 0x0640000 },
137 { 0x16, 0x0180000, 0x0180000, 0x0680000, 0x0C00000 },
138 { 0x17, 0x0580000, 0x0200000, 0x0E00000, 0x0C80000 },
139 { 0x17, 0x0300000, 0x0300000, 0x0D00000, 0x1800000 },
140 { 0x18, 0x0B00000, 0x0400000, 0x1C00000, 0x1900000 },
141 { 0x18, 0x0600000, 0x0600000, 0x1A00000, 0x3000000 },
142 { 0x19, 0x1600000, 0x0800000, 0x3800000, 0x3200000 },
143 { 0x19, 0x0C00000, 0x0C00000, 0x3400000, 0x6000000 },
144 { 0x1A, 0x2C00000, 0x1000000, 0x7000000, 0x6400000 },
145 { 0x1A, 0x1800000, 0x1800000, 0x6800000, 0xC000000 },
146 };
147
148 41 static int set_bps_params(AVCodecContext *avctx)
149 {
150
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 41 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 41 switch (avctx->bits_per_raw_sample) {
151 ✗ case 8:
152 ✗ avctx->sample_fmt = AV_SAMPLE_FMT_U8P;
153 ✗ break;
154 41 case 16:
155 41 avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
156 41 break;
157 ✗ case 24:
158 ✗ avctx->sample_fmt = AV_SAMPLE_FMT_S32P;
159 ✗ break;
160 ✗ default:
161 ✗ av_log(avctx, AV_LOG_ERROR, "invalid/unsupported bits per sample: %d\n",
162 avctx->bits_per_raw_sample);
163 ✗ return AVERROR_INVALIDDATA;
164 }
165
166 41 return 0;
167 }
168
169 2 static void set_sample_rate_params(AVCodecContext *avctx)
170 {
171 2 TAKDecContext *s = avctx->priv_data;
172 int shift;
173
174
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (avctx->sample_rate < 11025) {
175 ✗ shift = 3;
176
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 } else if (avctx->sample_rate < 22050) {
177 ✗ shift = 2;
178
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 } else if (avctx->sample_rate < 44100) {
179 ✗ shift = 1;
180 } else {
181 2 shift = 0;
182 }
183 2 s->uval = FFALIGN(avctx->sample_rate + 511LL >> 9, 4) << shift;
184 2 s->subframe_scale = FFALIGN(avctx->sample_rate + 511LL >> 9, 4) << 1;
185 2 }
186
187 2 static av_cold int tak_decode_init(AVCodecContext *avctx)
188 {
189 2 TAKDecContext *s = avctx->priv_data;
190
191 2 ff_audiodsp_init(&s->adsp);
192 2 ff_takdsp_init(&s->tdsp);
193
194 2 s->avctx = avctx;
195 2 avctx->bits_per_raw_sample = avctx->bits_per_coded_sample;
196
197 2 set_sample_rate_params(avctx);
198
199 2 return set_bps_params(avctx);
200 }
201
202 124 static void decode_lpc(int32_t *coeffs, int mode, int length)
203 {
204 int i;
205
206
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 124 times.
 124 if (length < 2)
207 ✗ return;
208
209
2/2
✓ Branch 0 taken 117 times.
✓ Branch 1 taken 7 times.
 124 if (mode == 1) {
210 117 unsigned a1 = *coeffs++;
211
2/2
✓ Branch 0 taken 431059 times.
✓ Branch 1 taken 117 times.
 431176 for (i = 0; i < length - 1 >> 1; i++) {
212 431059 *coeffs += a1;
213 431059 coeffs[1] += (unsigned)*coeffs;
214 431059 a1 = coeffs[1];
215 431059 coeffs += 2;
216 }
217
2/2
✓ Branch 0 taken 39 times.
✓ Branch 1 taken 78 times.
 117 if (length - 1 & 1)
218 39 *coeffs += a1;
219
1/2
✓ Branch 0 taken 7 times.
✗ Branch 1 not taken.
 7 } else if (mode == 2) {
220 7 unsigned a1 = coeffs[1];
221 7 unsigned a2 = a1 + *coeffs;
222 7 coeffs[1] = a2;
223
1/2
✓ Branch 0 taken 7 times.
✗ Branch 1 not taken.
 7 if (length > 2) {
224 7 coeffs += 2;
225
2/2
✓ Branch 0 taken 251 times.
✓ Branch 1 taken 7 times.
 258 for (i = 0; i < length - 2 >> 1; i++) {
226 251 unsigned a3 = *coeffs + a1;
227 251 unsigned a4 = a3 + a2;
228 251 *coeffs = a4;
229 251 a1 = coeffs[1] + a3;
230 251 a2 = a1 + a4;
231 251 coeffs[1] = a2;
232 251 coeffs += 2;
233 }
234
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 7 times.
 7 if (length & 1)
235 ✗ *coeffs += a1 + a2;
236 }
237 ✗ } else if (mode == 3) {
238 ✗ unsigned a1 = coeffs[1];
239 ✗ unsigned a2 = a1 + *coeffs;
240 ✗ coeffs[1] = a2;
241 ✗ if (length > 2) {
242 ✗ unsigned a3 = coeffs[2];
243 ✗ unsigned a4 = a3 + a1;
244 ✗ unsigned a5 = a4 + a2;
245 ✗ coeffs[2] = a5;
246 ✗ coeffs += 3;
247 ✗ for (i = 0; i < length - 3; i++) {
248 ✗ a3 += *coeffs;
249 ✗ a4 += a3;
250 ✗ a5 += a4;
251 ✗ *coeffs = a5;
252 ✗ coeffs++;
253 }
254 }
255 }
256 }
257
258 3970 static int decode_segment(TAKDecContext *s, int8_t mode, int32_t *decoded, int len)
259 {
260 struct CParam code;
261 3970 GetBitContext *gb = &s->gb;
262 int i;
263
264
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3970 times.
 3970 if (!mode) {
265 ✗ memset(decoded, 0, len * sizeof(*decoded));
266 ✗ return 0;
267 }
268
269
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 3970 times.
 3970 if (mode > FF_ARRAY_ELEMS(xcodes))
270 ✗ return AVERROR_INVALIDDATA;
271 3970 code = xcodes[mode - 1];
272
273
2/2
✓ Branch 0 taken 859872 times.
✓ Branch 1 taken 3970 times.
 863842 for (i = 0; i < len; i++) {
274 859872 unsigned x = get_bits_long(gb, code.init);
275
4/4
✓ Branch 0 taken 404333 times.
✓ Branch 1 taken 455539 times.
✓ Branch 3 taken 186781 times.
✓ Branch 4 taken 217552 times.
 859872 if (x >= code.escape && get_bits1(gb)) {
276 186781 x |= 1 << code.init;
277
2/2
✓ Branch 0 taken 138466 times.
✓ Branch 1 taken 48315 times.
 186781 if (x >= code.aescape) {
278 138466 unsigned scale = get_unary(gb, 1, 9);
279
2/2
✓ Branch 0 taken 164 times.
✓ Branch 1 taken 138302 times.
 138466 if (scale == 9) {
280 164 int scale_bits = get_bits(gb, 3);
281
2/2
✓ Branch 0 taken 109 times.
✓ Branch 1 taken 55 times.
 164 if (scale_bits > 0) {
282
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 109 times.
 109 if (scale_bits == 7) {
283 ✗ scale_bits += get_bits(gb, 5);
284 ✗ if (scale_bits > 29)
285 ✗ return AVERROR_INVALIDDATA;
286 }
287 109 scale = get_bits_long(gb, scale_bits) + 1;
288 109 x += code.scale * scale;
289 }
290 164 x += code.bias;
291 } else
292 138302 x += code.scale * scale - code.escape;
293 } else
294 48315 x -= code.escape;
295 }
296 859872 decoded[i] = (x >> 1) ^ -(x & 1);
297 }
298
299 3970 return 0;
300 }
301
302 346 static int decode_residues(TAKDecContext *s, int32_t *decoded, int length)
303 {
304 346 GetBitContext *gb = &s->gb;
305 int i, mode, ret;
306
307
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 346 times.
 346 if (length > s->nb_samples)
308 ✗ return AVERROR_INVALIDDATA;
309
310
2/2
✓ Branch 1 taken 252 times.
✓ Branch 2 taken 94 times.
 346 if (get_bits1(gb)) {
311 int wlength, rval;
312
313 252 wlength = length / s->uval;
314
315 252 rval = length - (wlength * s->uval);
316
317
2/2
✓ Branch 0 taken 210 times.
✓ Branch 1 taken 42 times.
 252 if (rval < s->uval / 2)
318 210 rval += s->uval;
319 else
320 42 wlength++;
321
322
2/4
✓ Branch 0 taken 252 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 252 times.
 252 if (wlength <= 1 || wlength > 128)
323 ✗ return AVERROR_INVALIDDATA;
324
325 252 s->coding_mode[0] = mode = get_bits(gb, 6);
326
327
2/2
✓ Branch 0 taken 8799 times.
✓ Branch 1 taken 252 times.
 9051 for (i = 1; i < wlength; i++) {
328 8799 int c = get_unary(gb, 1, 6);
329
330
4/5
✗ Branch 0 not taken.
✓ Branch 1 taken 238 times.
✓ Branch 2 taken 1625 times.
✓ Branch 3 taken 1761 times.
✓ Branch 4 taken 5175 times.
 8799 switch (c) {
331 ✗ case 6:
332 ✗ mode = get_bits(gb, 6);
333 ✗ break;
334 238 case 5:
335 case 4:
336 case 3: {
337 /* mode += sign ? (1 - c) : (c - 1) */
338 238 int sign = get_bits1(gb);
339 238 mode += (-sign ^ (c - 1)) + sign;
340 238 break;
341 }
342 1625 case 2:
343 1625 mode++;
344 1625 break;
345 1761 case 1:
346 1761 mode--;
347 1761 break;
348 }
349 8799 s->coding_mode[i] = mode;
350 }
351
352 252 i = 0;
353
2/2
✓ Branch 0 taken 3876 times.
✓ Branch 1 taken 252 times.
 4128 while (i < wlength) {
354 3876 int len = 0;
355
356 3876 mode = s->coding_mode[i];
357 do {
358
2/2
✓ Branch 0 taken 252 times.
✓ Branch 1 taken 8799 times.
 9051 if (i >= wlength - 1)
359 252 len += rval;
360 else
361 8799 len += s->uval;
362 9051 i++;
363
364
2/2
✓ Branch 0 taken 252 times.
✓ Branch 1 taken 8799 times.
 9051 if (i == wlength)
365 252 break;
366
2/2
✓ Branch 0 taken 5175 times.
✓ Branch 1 taken 3624 times.
 8799 } while (s->coding_mode[i] == mode);
367
368
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 3876 times.
 3876 if ((ret = decode_segment(s, mode, decoded, len)) < 0)
369 ✗ return ret;
370 3876 decoded += len;
371 }
372 } else {
373 94 mode = get_bits(gb, 6);
374
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 94 times.
 94 if ((ret = decode_segment(s, mode, decoded, length)) < 0)
375 ✗ return ret;
376 }
377
378 346 return 0;
379 }
380
381 382 static int get_bits_esc4(GetBitContext *gb)
382 {
383
2/2
✓ Branch 1 taken 25 times.
✓ Branch 2 taken 357 times.
 382 if (get_bits1(gb))
384 25 return get_bits(gb, 4) + 1;
385 else
386 357 return 0;
387 }
388
389 268 static int decode_subframe(TAKDecContext *s, int32_t *decoded,
390 int subframe_size, int prev_subframe_size)
391 {
392 268 GetBitContext *gb = &s->gb;
393 268 int x, y, i, j, ret = 0;
394 int dshift, size, filter_quant, filter_order;
395 int tfilter[MAX_PREDICTORS];
396
397
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 268 times.
 268 if (!get_bits1(gb))
398 ✗ return decode_residues(s, decoded, subframe_size);
399
400 268 filter_order = predictor_sizes[get_bits(gb, 4)];
401
402
3/4
✓ Branch 0 taken 190 times.
✓ Branch 1 taken 78 times.
✓ Branch 3 taken 190 times.
✗ Branch 4 not taken.
 268 if (prev_subframe_size > 0 && get_bits1(gb)) {
403
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 190 times.
 190 if (filter_order > prev_subframe_size)
404 ✗ return AVERROR_INVALIDDATA;
405
406 190 decoded -= filter_order;
407 190 subframe_size += filter_order;
408
409
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 190 times.
 190 if (filter_order > subframe_size)
410 ✗ return AVERROR_INVALIDDATA;
411 } else {
412 int lpc_mode;
413
414
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 78 times.
 78 if (filter_order > subframe_size)
415 ✗ return AVERROR_INVALIDDATA;
416
417 78 lpc_mode = get_bits(gb, 2);
418
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 78 times.
 78 if (lpc_mode > 2)
419 ✗ return AVERROR_INVALIDDATA;
420
421
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 78 times.
 78 if ((ret = decode_residues(s, decoded, filter_order)) < 0)
422 ✗ return ret;
423
424
2/2
✓ Branch 0 taken 46 times.
✓ Branch 1 taken 32 times.
 78 if (lpc_mode)
425 46 decode_lpc(decoded, lpc_mode, filter_order);
426 }
427
428 268 dshift = get_bits_esc4(gb);
429 268 size = get_bits1(gb) + 6;
430
431 268 filter_quant = 10;
432
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 268 times.
 268 if (get_bits1(gb)) {
433 ✗ filter_quant -= get_bits(gb, 3) + 1;
434 ✗ if (filter_quant < 3)
435 ✗ return AVERROR_INVALIDDATA;
436 }
437
438
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 268 times.
 268 if (get_bits_left(gb) < 2*10 + 2*size)
439 ✗ return AVERROR_INVALIDDATA;
440
441 268 s->predictors[0] = get_sbits(gb, 10);
442 268 s->predictors[1] = get_sbits(gb, 10);
443 268 s->predictors[2] = get_sbits(gb, size) * (1 << (10 - size));
444 268 s->predictors[3] = get_sbits(gb, size) * (1 << (10 - size));
445
2/2
✓ Branch 0 taken 245 times.
✓ Branch 1 taken 23 times.
 268 if (filter_order > 4) {
446 245 int tmp = size - get_bits1(gb);
447
448
2/2
✓ Branch 0 taken 8868 times.
✓ Branch 1 taken 245 times.
 9113 for (i = 4; i < filter_order; i++) {
449
2/2
✓ Branch 0 taken 2217 times.
✓ Branch 1 taken 6651 times.
 8868 if (!(i & 3))
450 2217 x = tmp - get_bits(gb, 2);
451 8868 s->predictors[i] = get_sbits(gb, x) * (1 << (10 - size));
452 }
453 }
454
455 268 tfilter[0] = s->predictors[0] * 64;
456
2/2
✓ Branch 0 taken 9672 times.
✓ Branch 1 taken 268 times.
 9940 for (i = 1; i < filter_order; i++) {
457 9672 uint32_t *p1 = &tfilter[0];
458 9672 uint32_t *p2 = &tfilter[i - 1];
459
460
2/2
✓ Branch 0 taken 206508 times.
✓ Branch 1 taken 9672 times.
 216180 for (j = 0; j < (i + 1) / 2; j++) {
461 206508 x = *p1 + ((int32_t)(s->predictors[i] * *p2 + 256) >> 9);
462 206508 *p2 += (int32_t)(s->predictors[i] * *p1 + 256) >> 9;
463 206508 *p1++ = x;
464 206508 p2--;
465 }
466
467 9672 tfilter[i] = s->predictors[i] * 64;
468 }
469
470 268 x = 1 << (32 - (15 - filter_quant));
471 268 y = 1 << ((15 - filter_quant) - 1);
472
2/2
✓ Branch 0 taken 4970 times.
✓ Branch 1 taken 268 times.
 5238 for (i = 0, j = filter_order - 1; i < filter_order / 2; i++, j--) {
473 4970 s->filter[j] = x - ((tfilter[i] + y) >> (15 - filter_quant));
474 4970 s->filter[i] = x - ((tfilter[j] + y) >> (15 - filter_quant));
475 }
476
477
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 268 times.
 268 if ((ret = decode_residues(s, &decoded[filter_order],
478 subframe_size - filter_order)) < 0)
479 ✗ return ret;
480
481
2/2
✓ Branch 0 taken 9940 times.
✓ Branch 1 taken 268 times.
 10208 for (i = 0; i < filter_order; i++)
482 9940 s->residues[i] = *decoded++ >> dshift;
483
484 268 y = FF_ARRAY_ELEMS(s->residues) - filter_order;
485 268 x = subframe_size - filter_order;
486
2/2
✓ Branch 0 taken 1892 times.
✓ Branch 1 taken 268 times.
 2160 while (x > 0) {
487 1892 int tmp = FFMIN(y, x);
488
489
2/2
✓ Branch 0 taken 855940 times.
✓ Branch 1 taken 1892 times.
 857832 for (i = 0; i < tmp; i++) {
490 855940 int v = 1 << (filter_quant - 1);
491
492
2/2
✓ Branch 0 taken 703880 times.
✓ Branch 1 taken 152060 times.
 855940 if (filter_order & -16)
493 703880 v += (unsigned)s->adsp.scalarproduct_int16(&s->residues[i], s->filter,
494 filter_order & -16);
495
2/2
✓ Branch 0 taken 495532 times.
✓ Branch 1 taken 855940 times.
 1351472 for (j = filter_order & -16; j < filter_order; j += 4) {
496 495532 v += s->residues[i + j + 3] * (unsigned)s->filter[j + 3] +
497 495532 s->residues[i + j + 2] * (unsigned)s->filter[j + 2] +
498 495532 s->residues[i + j + 1] * (unsigned)s->filter[j + 1] +
499 495532 s->residues[i + j ] * (unsigned)s->filter[j ];
500 }
501 855940 v = (av_clip_intp2(v >> filter_quant, 13) * (1 << dshift)) - (unsigned)*decoded;
502 855940 *decoded++ = v;
503 855940 s->residues[filter_order + i] = v >> dshift;
504 }
505
506 1892 x -= tmp;
507
2/2
✓ Branch 0 taken 1624 times.
✓ Branch 1 taken 268 times.
 1892 if (x > 0)
508 1624 memcpy(s->residues, &s->residues[y], 2 * filter_order);
509 }
510
511 268 return 0;
512 }
513
514 78 static int decode_channel(TAKDecContext *s, int chan)
515 {
516 78 AVCodecContext *avctx = s->avctx;
517 78 GetBitContext *gb = &s->gb;
518 78 int32_t *decoded = s->decoded[chan];
519 78 int left = s->nb_samples - 1;
520 78 int i = 0, ret, prev = 0;
521
522 78 s->sample_shift[chan] = get_bits_esc4(gb);
523
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 78 times.
 78 if (s->sample_shift[chan] >= avctx->bits_per_raw_sample)
524 ✗ return AVERROR_INVALIDDATA;
525
526 78 *decoded++ = get_sbits(gb, avctx->bits_per_raw_sample - s->sample_shift[chan]);
527 78 s->lpc_mode[chan] = get_bits(gb, 2);
528 78 s->nb_subframes = get_bits(gb, 3) + 1;
529
530
2/2
✓ Branch 0 taken 69 times.
✓ Branch 1 taken 9 times.
 78 if (s->nb_subframes > 1) {
531
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 69 times.
 69 if (get_bits_left(gb) < (s->nb_subframes - 1) * 6)
532 ✗ return AVERROR_INVALIDDATA;
533
534
2/2
✓ Branch 0 taken 190 times.
✓ Branch 1 taken 69 times.
 259 for (; i < s->nb_subframes - 1; i++) {
535 190 int v = get_bits(gb, 6);
536
537 190 s->subframe_len[i] = (v - prev) * s->subframe_scale;
538
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 190 times.
 190 if (s->subframe_len[i] <= 0)
539 ✗ return AVERROR_INVALIDDATA;
540
541 190 left -= s->subframe_len[i];
542 190 prev = v;
543 }
544
545
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 69 times.
 69 if (left <= 0)
546 ✗ return AVERROR_INVALIDDATA;
547 }
548 78 s->subframe_len[i] = left;
549
550 78 prev = 0;
551
2/2
✓ Branch 0 taken 268 times.
✓ Branch 1 taken 78 times.
 346 for (i = 0; i < s->nb_subframes; i++) {
552
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 268 times.
 268 if ((ret = decode_subframe(s, decoded, s->subframe_len[i], prev)) < 0)
553 ✗ return ret;
554 268 decoded += s->subframe_len[i];
555 268 prev = s->subframe_len[i];
556 }
557
558 78 return 0;
559 }
560
561 39 static int decorrelate(TAKDecContext *s, int c1, int c2, int length)
562 {
563 39 GetBitContext *gb = &s->gb;
564
2/2
✓ Branch 0 taken 30 times.
✓ Branch 1 taken 9 times.
 39 int32_t *p1 = s->decoded[c1] + (s->dmode > 5);
565
2/2
✓ Branch 0 taken 30 times.
✓ Branch 1 taken 9 times.
 39 int32_t *p2 = s->decoded[c2] + (s->dmode > 5);
566 39 int32_t bp1 = p1[0];
567 39 int32_t bp2 = p2[0];
568 int i;
569 int dshift, dfactor;
570
571 39 length += s->dmode < 6;
572
573
6/8
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 2 times.
✓ Branch 3 taken 4 times.
✓ Branch 4 taken 2 times.
✓ Branch 5 taken 13 times.
✓ Branch 6 taken 17 times.
✗ Branch 7 not taken.
 39 switch (s->dmode) {
574 1 case 1: /* left/side */
575 1 s->tdsp.decorrelate_ls(p1, p2, length);
576 1 break;
577 ✗ case 2: /* side/right */
578 ✗ s->tdsp.decorrelate_sr(p1, p2, length);
579 ✗ break;
580 2 case 3: /* side/mid */
581 2 s->tdsp.decorrelate_sm(p1, p2, length);
582 2 break;
583 4 case 4: /* side/left with scale factor */
584 4 FFSWAP(int32_t*, p1, p2);
585 4 FFSWAP(int32_t, bp1, bp2);
586 av_fallthrough;
587 6 case 5: /* side/right with scale factor */
588 6 dshift = get_bits_esc4(gb);
589 6 dfactor = get_sbits(gb, 10);
590 6 s->tdsp.decorrelate_sf(p1, p2, length, dshift, dfactor);
591 6 break;
592 13 case 6:
593 13 FFSWAP(int32_t*, p1, p2);
594 av_fallthrough;
595 30 case 7: {
596 int length2, order_half, filter_order, dval1, dval2;
597 int tmp, x, code_size;
598
599
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 30 times.
 30 if (length < 256)
600 ✗ return AVERROR_INVALIDDATA;
601
602 30 dshift = get_bits_esc4(gb);
603 30 filter_order = 8 << get_bits1(gb);
604 30 dval1 = get_bits1(gb);
605 30 dval2 = get_bits1(gb);
606
607
2/2
✓ Branch 0 taken 336 times.
✓ Branch 1 taken 30 times.
 366 for (i = 0; i < filter_order; i++) {
608
2/2
✓ Branch 0 taken 84 times.
✓ Branch 1 taken 252 times.
 336 if (!(i & 3))
609 84 code_size = 14 - get_bits(gb, 3);
610 336 s->filter[i] = get_sbits(gb, code_size);
611 }
612
613 30 order_half = filter_order / 2;
614 30 length2 = length - (filter_order - 1);
615
616 /* decorrelate beginning samples */
617
2/2
✓ Branch 0 taken 21 times.
✓ Branch 1 taken 9 times.
 30 if (dval1) {
618
2/2
✓ Branch 0 taken 120 times.
✓ Branch 1 taken 21 times.
 141 for (i = 0; i < order_half; i++) {
619 120 int32_t a = p1[i];
620 120 int32_t b = p2[i];
621 120 p1[i] = a + b;
622 }
623 }
624
625 /* decorrelate ending samples */
626
2/2
✓ Branch 0 taken 18 times.
✓ Branch 1 taken 12 times.
 30 if (dval2) {
627
2/2
✓ Branch 0 taken 78 times.
✓ Branch 1 taken 18 times.
 96 for (i = length2 + order_half; i < length; i++) {
628 78 int32_t a = p1[i];
629 78 int32_t b = p2[i];
630 78 p1[i] = a + b;
631 }
632 }
633
634
635
2/2
✓ Branch 0 taken 336 times.
✓ Branch 1 taken 30 times.
 366 for (i = 0; i < filter_order; i++)
636 336 s->residues[i] = *p2++ >> dshift;
637
638 30 p1 += order_half;
639 30 x = FF_ARRAY_ELEMS(s->residues) - filter_order;
640
2/2
✓ Branch 0 taken 630 times.
✓ Branch 1 taken 30 times.
 660 for (; length2 > 0; length2 -= tmp) {
641 630 tmp = FFMIN(length2, x);
642
643
2/2
✓ Branch 0 taken 330384 times.
✓ Branch 1 taken 630 times.
 331014 for (i = 0; i < tmp - (tmp == length2); i++)
644 330384 s->residues[filter_order + i] = *p2++ >> dshift;
645
646
2/2
✓ Branch 0 taken 330414 times.
✓ Branch 1 taken 630 times.
 331044 for (i = 0; i < tmp; i++) {
647 330414 int v = 1 << 9;
648
649
2/2
✓ Branch 0 taken 132108 times.
✓ Branch 1 taken 198306 times.
 330414 if (filter_order == 16) {
650 132108 v += s->adsp.scalarproduct_int16(&s->residues[i], s->filter,
651 filter_order);
652 } else {
653 198306 v += s->residues[i + 7] * s->filter[7] +
654 198306 s->residues[i + 6] * s->filter[6] +
655 198306 s->residues[i + 5] * s->filter[5] +
656 198306 s->residues[i + 4] * s->filter[4] +
657 198306 s->residues[i + 3] * s->filter[3] +
658 198306 s->residues[i + 2] * s->filter[2] +
659 198306 s->residues[i + 1] * s->filter[1] +
660 198306 s->residues[i ] * s->filter[0];
661 }
662
663 330414 v = av_clip_intp2(v >> 10, 13) * (1U << dshift) - *p1;
664 330414 *p1++ = v;
665 }
666
667 630 memmove(s->residues, &s->residues[tmp], 2 * filter_order);
668 }
669 30 break;
670 }
671 }
672
673
3/4
✓ Branch 0 taken 39 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 9 times.
✓ Branch 3 taken 30 times.
 39 if (s->dmode > 0 && s->dmode < 6) {
674 9 p1[0] = bp1;
675 9 p2[0] = bp2;
676 }
677
678 39 return 0;
679 }
680
681 39 static int tak_decode_frame(AVCodecContext *avctx, AVFrame *frame,
682 int *got_frame_ptr, AVPacket *pkt)
683 {
684 39 TAKDecContext *s = avctx->priv_data;
685 39 GetBitContext *gb = &s->gb;
686 int chan, i, ret, hsize;
687
688
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (pkt->size < TAK_MIN_FRAME_HEADER_BYTES)
689 ✗ return AVERROR_INVALIDDATA;
690
691
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if ((ret = init_get_bits8(gb, pkt->data, pkt->size)) < 0)
692 ✗ return ret;
693
694
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if ((ret = ff_tak_decode_frame_header(avctx, gb, &s->ti, 0)) < 0)
695 ✗ return ret;
696
697 39 hsize = get_bits_count(gb) / 8;
698
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (avctx->err_recognition & (AV_EF_CRCCHECK|AV_EF_COMPLIANT)) {
699 ✗ if (ff_tak_check_crc(pkt->data, hsize)) {
700 ✗ av_log(avctx, AV_LOG_ERROR, "CRC error\n");
701 ✗ if (avctx->err_recognition & AV_EF_EXPLODE)
702 ✗ return AVERROR_INVALIDDATA;
703 }
704 }
705
706
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.codec != TAK_CODEC_MONO_STEREO &&
707 ✗ s->ti.codec != TAK_CODEC_MULTICHANNEL) {
708 ✗ avpriv_report_missing_feature(avctx, "TAK codec type %d", s->ti.codec);
709 ✗ return AVERROR_PATCHWELCOME;
710 }
711
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.data_type) {
712 ✗ av_log(avctx, AV_LOG_ERROR,
713 "unsupported data type: %d\n", s->ti.data_type);
714 ✗ return AVERROR_INVALIDDATA;
715 }
716
2/4
✓ Branch 0 taken 39 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 39 times.
 39 if (s->ti.codec == TAK_CODEC_MONO_STEREO && s->ti.channels > 2) {
717 ✗ av_log(avctx, AV_LOG_ERROR,
718 "invalid number of channels: %d\n", s->ti.channels);
719 ✗ return AVERROR_INVALIDDATA;
720 }
721
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.channels > 6) {
722 ✗ av_log(avctx, AV_LOG_ERROR,
723 "unsupported number of channels: %d\n", s->ti.channels);
724 ✗ return AVERROR_INVALIDDATA;
725 }
726
727
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.frame_samples <= 0) {
728 ✗ av_log(avctx, AV_LOG_ERROR, "unsupported/invalid number of samples\n");
729 ✗ return AVERROR_INVALIDDATA;
730 }
731
732 39 avctx->bits_per_raw_sample = s->ti.bps;
733
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if ((ret = set_bps_params(avctx)) < 0)
734 ✗ return ret;
735
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.sample_rate != avctx->sample_rate) {
736 ✗ avctx->sample_rate = s->ti.sample_rate;
737 ✗ set_sample_rate_params(avctx);
738 }
739
740 39 av_channel_layout_uninit(&avctx->ch_layout);
741
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->ti.ch_layout) {
742 ✗ av_channel_layout_from_mask(&avctx->ch_layout, s->ti.ch_layout);
743 } else {
744 39 avctx->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
745 39 avctx->ch_layout.nb_channels = s->ti.channels;
746 }
747
748 78 s->nb_samples = s->ti.last_frame_samples ? s->ti.last_frame_samples
749
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 38 times.
 39 : s->ti.frame_samples;
750
751 39 frame->nb_samples = s->nb_samples;
752
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if ((ret = ff_thread_get_buffer(avctx, frame, 0)) < 0)
753 ✗ return ret;
754 39 ff_thread_finish_setup(avctx);
755
756
1/2
✓ Branch 0 taken 39 times.
✗ Branch 1 not taken.
 39 if (avctx->bits_per_raw_sample <= 16) {
757 39 int buf_size = av_samples_get_buffer_size(NULL, avctx->ch_layout.nb_channels,
758 s->nb_samples,
759 AV_SAMPLE_FMT_S32P, 0);
760
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (buf_size < 0)
761 ✗ return buf_size;
762 39 av_fast_malloc(&s->decode_buffer, &s->decode_buffer_size, buf_size);
763
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (!s->decode_buffer)
764 ✗ return AVERROR(ENOMEM);
765 39 ret = av_samples_fill_arrays((uint8_t **)s->decoded, NULL,
766 39 s->decode_buffer, avctx->ch_layout.nb_channels,
767 s->nb_samples, AV_SAMPLE_FMT_S32P, 0);
768
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (ret < 0)
769 ✗ return ret;
770 } else {
771 ✗ for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++)
772 ✗ s->decoded[chan] = (int32_t *)frame->extended_data[chan];
773 }
774
775
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->nb_samples < 16) {
776 ✗ for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++) {
777 ✗ int32_t *decoded = s->decoded[chan];
778 ✗ for (i = 0; i < s->nb_samples; i++)
779 ✗ decoded[i] = get_sbits(gb, avctx->bits_per_raw_sample);
780 }
781 } else {
782
1/2
✓ Branch 0 taken 39 times.
✗ Branch 1 not taken.
 39 if (s->ti.codec == TAK_CODEC_MONO_STEREO) {
783
2/2
✓ Branch 0 taken 78 times.
✓ Branch 1 taken 39 times.
 117 for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++)
784
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 78 times.
 78 if (ret = decode_channel(s, chan))
785 ✗ return ret;
786
787
1/2
✓ Branch 0 taken 39 times.
✗ Branch 1 not taken.
 39 if (avctx->ch_layout.nb_channels == 2) {
788 39 s->nb_subframes = get_bits(gb, 1) + 1;
789
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (s->nb_subframes > 1) {
790 ✗ s->subframe_len[1] = get_bits(gb, 6);
791 }
792
793 39 s->dmode = get_bits(gb, 3);
794
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if (ret = decorrelate(s, 0, 1, s->nb_samples - 1))
795 ✗ return ret;
796 }
797 ✗ } else if (s->ti.codec == TAK_CODEC_MULTICHANNEL) {
798 ✗ if (get_bits1(gb)) {
799 ✗ int ch_mask = 0;
800
801 ✗ chan = get_bits(gb, 4) + 1;
802 ✗ if (chan > avctx->ch_layout.nb_channels)
803 ✗ return AVERROR_INVALIDDATA;
804
805 ✗ for (i = 0; i < chan; i++) {
806 ✗ int nbit = get_bits(gb, 4);
807
808 ✗ if (nbit >= avctx->ch_layout.nb_channels)
809 ✗ return AVERROR_INVALIDDATA;
810
811 ✗ if (ch_mask & 1 << nbit)
812 ✗ return AVERROR_INVALIDDATA;
813
814 ✗ s->mcdparams[i].present = get_bits1(gb);
815 ✗ if (s->mcdparams[i].present) {
816 ✗ s->mcdparams[i].index = get_bits(gb, 2);
817 ✗ s->mcdparams[i].chan2 = get_bits(gb, 4);
818 ✗ if (s->mcdparams[i].chan2 >= avctx->ch_layout.nb_channels) {
819 ✗ av_log(avctx, AV_LOG_ERROR,
820 "invalid channel 2 (%d) for %d channel(s)\n",
821 ✗ s->mcdparams[i].chan2, avctx->ch_layout.nb_channels);
822 ✗ return AVERROR_INVALIDDATA;
823 }
824 ✗ if (s->mcdparams[i].index == 1) {
825 ✗ if ((nbit == s->mcdparams[i].chan2) ||
826 ✗ (ch_mask & 1 << s->mcdparams[i].chan2))
827 ✗ return AVERROR_INVALIDDATA;
828
829 ✗ ch_mask |= 1 << s->mcdparams[i].chan2;
830 ✗ } else if (!(ch_mask & 1 << s->mcdparams[i].chan2)) {
831 ✗ return AVERROR_INVALIDDATA;
832 }
833 }
834 ✗ s->mcdparams[i].chan1 = nbit;
835
836 ✗ ch_mask |= 1 << nbit;
837 }
838 } else {
839 ✗ chan = avctx->ch_layout.nb_channels;
840 ✗ for (i = 0; i < chan; i++) {
841 ✗ s->mcdparams[i].present = 0;
842 ✗ s->mcdparams[i].chan1 = i;
843 }
844 }
845
846 ✗ for (i = 0; i < chan; i++) {
847 ✗ if (s->mcdparams[i].present && s->mcdparams[i].index == 1)
848 ✗ if (ret = decode_channel(s, s->mcdparams[i].chan2))
849 ✗ return ret;
850
851 ✗ if (ret = decode_channel(s, s->mcdparams[i].chan1))
852 ✗ return ret;
853
854 ✗ if (s->mcdparams[i].present) {
855 ✗ s->dmode = mc_dmodes[s->mcdparams[i].index];
856 ✗ if (ret = decorrelate(s,
857 ✗ s->mcdparams[i].chan2,
858 ✗ s->mcdparams[i].chan1,
859 ✗ s->nb_samples - 1))
860 ✗ return ret;
861 }
862 }
863 }
864
865
2/2
✓ Branch 0 taken 78 times.
✓ Branch 1 taken 39 times.
 117 for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++) {
866 78 int32_t *decoded = s->decoded[chan];
867
868
1/2
✓ Branch 0 taken 78 times.
✗ Branch 1 not taken.
 78 if (s->lpc_mode[chan])
869 78 decode_lpc(decoded, s->lpc_mode[chan], s->nb_samples);
870
871
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 78 times.
 78 if (s->sample_shift[chan] > 0)
872 ✗ for (i = 0; i < s->nb_samples; i++)
873 ✗ decoded[i] *= 1U << s->sample_shift[chan];
874 }
875 }
876
877 39 align_get_bits(gb);
878 39 skip_bits(gb, 24);
879
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 if (get_bits_left(gb) < 0)
880 ✗ av_log(avctx, AV_LOG_DEBUG, "overread\n");
881
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 39 times.
 39 else if (get_bits_left(gb) > 0)
882 ✗ av_log(avctx, AV_LOG_DEBUG, "underread\n");
883
884
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
 39 if (avctx->err_recognition & (AV_EF_CRCCHECK | AV_EF_COMPLIANT)) {
885 ✗ if (ff_tak_check_crc(pkt->data + hsize,
886 ✗ get_bits_count(gb) / 8 - hsize)) {
887 ✗ av_log(avctx, AV_LOG_ERROR, "CRC error\n");
888 ✗ if (avctx->err_recognition & AV_EF_EXPLODE)
889 ✗ return AVERROR_INVALIDDATA;
890 }
891 }
892
893 /* convert to output buffer */
894
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 39 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 39 switch (avctx->sample_fmt) {
895 ✗ case AV_SAMPLE_FMT_U8P:
896 ✗ for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++) {
897 ✗ uint8_t *samples = (uint8_t *)frame->extended_data[chan];
898 ✗ int32_t *decoded = s->decoded[chan];
899 ✗ for (i = 0; i < s->nb_samples; i++)
900 ✗ samples[i] = decoded[i] + 0x80U;
901 }
902 ✗ break;
903 39 case AV_SAMPLE_FMT_S16P:
904
2/2
✓ Branch 0 taken 78 times.
✓ Branch 1 taken 39 times.
 117 for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++) {
905 78 int16_t *samples = (int16_t *)frame->extended_data[chan];
906 78 int32_t *decoded = s->decoded[chan];
907
2/2
✓ Branch 0 taken 859950 times.
✓ Branch 1 taken 78 times.
 860028 for (i = 0; i < s->nb_samples; i++)
908 859950 samples[i] = decoded[i];
909 }
910 39 break;
911 ✗ case AV_SAMPLE_FMT_S32P:
912 ✗ for (chan = 0; chan < avctx->ch_layout.nb_channels; chan++) {
913 ✗ int32_t *samples = (int32_t *)frame->extended_data[chan];
914 ✗ for (i = 0; i < s->nb_samples; i++)
915 ✗ samples[i] *= 1U << 8;
916 }
917 ✗ break;
918 }
919
920 39 *got_frame_ptr = 1;
921
922 39 return pkt->size;
923 }
924
925 #if HAVE_THREADS
926 ✗ static int update_thread_context(AVCodecContext *dst,
927 const AVCodecContext *src)
928 {
929 ✗ TAKDecContext *tsrc = src->priv_data;
930 ✗ TAKDecContext *tdst = dst->priv_data;
931
932 ✗ if (dst == src)
933 ✗ return 0;
934 ✗ memcpy(&tdst->ti, &tsrc->ti, sizeof(TAKStreamInfo));
935 ✗ return 0;
936 }
937 #endif
938
939 2 static av_cold int tak_decode_close(AVCodecContext *avctx)
940 {
941 2 TAKDecContext *s = avctx->priv_data;
942
943 2 av_freep(&s->decode_buffer);
944
945 2 return 0;
946 }
947
948 const FFCodec ff_tak_decoder = {
949 .p.name = "tak",
950 CODEC_LONG_NAME("TAK (Tom's lossless Audio Kompressor)"),
951 .p.type = AVMEDIA_TYPE_AUDIO,
952 .p.id = AV_CODEC_ID_TAK,
953 .priv_data_size = sizeof(TAKDecContext),
954 .init = tak_decode_init,
955 .close = tak_decode_close,
956 FF_CODEC_DECODE_CB(tak_decode_frame),
957 UPDATE_THREAD_CONTEXT(update_thread_context),
958 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_CHANNEL_CONF,
959 };
960