GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/wavpack.c Lines: 586 1075 54.5 %
Date: 2020-09-25 14:59:26 Branches: 377 714 52.8 %

Line Branch Exec Source
1
/*
2
 * WavPack lossless audio decoder
3
 * Copyright (c) 2006,2011 Konstantin Shishkov
4
 * Copyright (c) 2020 David Bryant
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg is distributed in the hope that it will be useful,
14
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22
23
#include "libavutil/buffer.h"
24
#include "libavutil/channel_layout.h"
25
26
#define BITSTREAM_READER_LE
27
#include "avcodec.h"
28
#include "bytestream.h"
29
#include "get_bits.h"
30
#include "internal.h"
31
#include "thread.h"
32
#include "unary.h"
33
#include "wavpack.h"
34
#include "dsd.h"
35
36
/**
37
 * @file
38
 * WavPack lossless audio decoder
39
 */
40
41
#define DSD_BYTE_READY(low,high) (!(((low) ^ (high)) & 0xff000000))
42
43
#define PTABLE_BITS 8
44
#define PTABLE_BINS (1<<PTABLE_BITS)
45
#define PTABLE_MASK (PTABLE_BINS-1)
46
47
#define UP   0x010000fe
48
#define DOWN 0x00010000
49
#define DECAY 8
50
51
#define PRECISION 20
52
#define VALUE_ONE (1 << PRECISION)
53
#define PRECISION_USE 12
54
55
#define RATE_S 20
56
57
#define MAX_HISTORY_BITS    5
58
#define MAX_HISTORY_BINS    (1 << MAX_HISTORY_BITS)
59
#define MAX_BIN_BYTES       1280    // for value_lookup, per bin (2k - 512 - 256)
60
61
typedef enum {
62
    MODULATION_PCM,     // pulse code modulation
63
    MODULATION_DSD      // pulse density modulation (aka DSD)
64
} Modulation;
65
66
typedef struct WavpackFrameContext {
67
    AVCodecContext *avctx;
68
    int frame_flags;
69
    int stereo, stereo_in;
70
    int joint;
71
    uint32_t CRC;
72
    GetBitContext gb;
73
    int got_extra_bits;
74
    uint32_t crc_extra_bits;
75
    GetBitContext gb_extra_bits;
76
    int samples;
77
    int terms;
78
    Decorr decorr[MAX_TERMS];
79
    int zero, one, zeroes;
80
    int extra_bits;
81
    int and, or, shift;
82
    int post_shift;
83
    int hybrid, hybrid_bitrate;
84
    int hybrid_maxclip, hybrid_minclip;
85
    int float_flag;
86
    int float_shift;
87
    int float_max_exp;
88
    WvChannel ch[2];
89
90
    GetByteContext gbyte;
91
    int ptable [PTABLE_BINS];
92
    uint8_t value_lookup_buffer[MAX_HISTORY_BINS*MAX_BIN_BYTES];
93
    uint16_t summed_probabilities[MAX_HISTORY_BINS][256];
94
    uint8_t probabilities[MAX_HISTORY_BINS][256];
95
    uint8_t *value_lookup[MAX_HISTORY_BINS];
96
} WavpackFrameContext;
97
98
#define WV_MAX_FRAME_DECODERS 14
99
100
typedef struct WavpackContext {
101
    AVCodecContext *avctx;
102
103
    WavpackFrameContext *fdec[WV_MAX_FRAME_DECODERS];
104
    int fdec_num;
105
106
    int block;
107
    int samples;
108
    int ch_offset;
109
110
    AVFrame *frame;
111
    ThreadFrame curr_frame, prev_frame;
112
    Modulation modulation;
113
114
    AVBufferRef *dsd_ref;
115
    DSDContext *dsdctx;
116
    int dsd_channels;
117
} WavpackContext;
118
119
#define LEVEL_DECAY(a)  (((a) + 0x80) >> 8)
120
121
28282042
static av_always_inline unsigned get_tail(GetBitContext *gb, int k)
122
{
123
    int p, e, res;
124
125
28282042
    if (k < 1)
126
3083218
        return 0;
127
25198824
    p   = av_log2(k);
128
25198824
    e   = (1 << (p + 1)) - k - 1;
129
25198824
    res = get_bitsz(gb, p);
130
25198824
    if (res >= e)
131
15873859
        res = (res << 1) - e + get_bits1(gb);
132
25198824
    return res;
133
}
134
135
34605992
static int update_error_limit(WavpackFrameContext *ctx)
136
{
137
    int i, br[2], sl[2];
138
139
94481518
    for (i = 0; i <= ctx->stereo_in; i++) {
140
59875526
        if (ctx->ch[i].bitrate_acc > UINT_MAX - ctx->ch[i].bitrate_delta)
141
            return AVERROR_INVALIDDATA;
142
59875526
        ctx->ch[i].bitrate_acc += ctx->ch[i].bitrate_delta;
143
59875526
        br[i]                   = ctx->ch[i].bitrate_acc >> 16;
144
59875526
        sl[i]                   = LEVEL_DECAY(ctx->ch[i].slow_level);
145
    }
146

34605992
    if (ctx->stereo_in && ctx->hybrid_bitrate) {
147
25269534
        int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
148
25269534
        if (balance > br[0]) {
149
7996128
            br[1] = br[0] * 2;
150
7996128
            br[0] = 0;
151
17273406
        } else if (-balance > br[0]) {
152
2254389
            br[0]  *= 2;
153
2254389
            br[1]   = 0;
154
        } else {
155
15019017
            br[1] = br[0] + balance;
156
15019017
            br[0] = br[0] - balance;
157
        }
158
    }
159
94481518
    for (i = 0; i <= ctx->stereo_in; i++) {
160
59875526
        if (ctx->hybrid_bitrate) {
161
59875526
            if (sl[i] - br[i] > -0x100)
162
59872999
                ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
163
            else
164
2527
                ctx->ch[i].error_limit = 0;
165
        } else {
166
            ctx->ch[i].error_limit = wp_exp2(br[i]);
167
        }
168
    }
169
170
34605992
    return 0;
171
}
172
173
350697957
static int wv_get_value(WavpackFrameContext *ctx, GetBitContext *gb,
174
                        int channel, int *last)
175
{
176
    int t, t2;
177
    int sign, base, add, ret;
178
350697957
    WvChannel *c = &ctx->ch[channel];
179
180
350697957
    *last = 0;
181
182

350697957
    if ((ctx->ch[0].median[0] < 2U) && (ctx->ch[1].median[0] < 2U) &&
183

263970432
        !ctx->zero && !ctx->one) {
184
263766715
        if (ctx->zeroes) {
185
263562435
            ctx->zeroes--;
186
263562435
            if (ctx->zeroes) {
187
263457446
                c->slow_level -= LEVEL_DECAY(c->slow_level);
188
263457446
                return 0;
189
            }
190
        } else {
191
204280
            t = get_unary_0_33(gb);
192
204280
            if (t >= 2) {
193

70184
                if (t >= 32 || get_bits_left(gb) < t - 1)
194
                    goto error;
195
70184
                t = get_bits_long(gb, t - 1) | (1 << (t - 1));
196
            } else {
197
134096
                if (get_bits_left(gb) < 0)
198
                    goto error;
199
            }
200
204280
            ctx->zeroes = t;
201
204280
            if (ctx->zeroes) {
202
111011
                memset(ctx->ch[0].median, 0, sizeof(ctx->ch[0].median));
203
111011
                memset(ctx->ch[1].median, 0, sizeof(ctx->ch[1].median));
204
111011
                c->slow_level -= LEVEL_DECAY(c->slow_level);
205
111011
                return 0;
206
            }
207
        }
208
    }
209
210
87129500
    if (ctx->zero) {
211
36018736
        t         = 0;
212
36018736
        ctx->zero = 0;
213
    } else {
214
51110764
        t = get_unary_0_33(gb);
215
51110764
        if (get_bits_left(gb) < 0)
216
            goto error;
217
51110764
        if (t == 16) {
218
20139
            t2 = get_unary_0_33(gb);
219
20139
            if (t2 < 2) {
220
4854
                if (get_bits_left(gb) < 0)
221
                    goto error;
222
4854
                t += t2;
223
            } else {
224

15285
                if (t2 >= 32 || get_bits_left(gb) < t2 - 1)
225
                    goto error;
226
15285
                t += get_bits_long(gb, t2 - 1) | (1 << (t2 - 1));
227
            }
228
        }
229
230
51110764
        if (ctx->one) {
231
15090662
            ctx->one = t & 1;
232
15090662
            t        = (t >> 1) + 1;
233
        } else {
234
36020102
            ctx->one = t & 1;
235
36020102
            t      >>= 1;
236
        }
237
51110764
        ctx->zero = !ctx->one;
238
    }
239
240

87129500
    if (ctx->hybrid && !channel) {
241
34605992
        if (update_error_limit(ctx) < 0)
242
            goto error;
243
    }
244
245
87129500
    if (!t) {
246
62106315
        base = 0;
247
62106315
        add  = GET_MED(0) - 1;
248
62106315
        DEC_MED(0);
249
25023185
    } else if (t == 1) {
250
17844678
        base = GET_MED(0);
251
17844678
        add  = GET_MED(1) - 1;
252
17844678
        INC_MED(0);
253
17844678
        DEC_MED(1);
254
7178507
    } else if (t == 2) {
255
5062511
        base = GET_MED(0) + GET_MED(1);
256
5062511
        add  = GET_MED(2) - 1;
257
5062511
        INC_MED(0);
258
5062511
        INC_MED(1);
259
5062511
        DEC_MED(2);
260
    } else {
261
2115996
        base = GET_MED(0) + GET_MED(1) + GET_MED(2) * (t - 2U);
262
2115996
        add  = GET_MED(2) - 1;
263
2115996
        INC_MED(0);
264
2115996
        INC_MED(1);
265
2115996
        INC_MED(2);
266
    }
267
87129500
    if (!c->error_limit) {
268
28282042
        if (add >= 0x2000000U) {
269
            av_log(ctx->avctx, AV_LOG_ERROR, "k %d is too large\n", add);
270
            goto error;
271
        }
272
28282042
        ret = base + get_tail(gb, add);
273
28282042
        if (get_bits_left(gb) <= 0)
274
            goto error;
275
    } else {
276
58847458
        int mid = (base * 2U + add + 1) >> 1;
277
84266731
        while (add > c->error_limit) {
278
25419273
            if (get_bits_left(gb) <= 0)
279
                goto error;
280
25419273
            if (get_bits1(gb)) {
281
10905078
                add -= (mid - (unsigned)base);
282
10905078
                base = mid;
283
            } else
284
14514195
                add = mid - (unsigned)base - 1;
285
25419273
            mid = (base * 2U + add + 1) >> 1;
286
        }
287
58847458
        ret = mid;
288
    }
289
87129500
    sign = get_bits1(gb);
290
87129500
    if (ctx->hybrid_bitrate)
291
59874831
        c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);
292
87129500
    return sign ? ~ret : ret;
293
294
error:
295
    ret = get_bits_left(gb);
296
    if (ret <= 0) {
297
        av_log(ctx->avctx, AV_LOG_ERROR, "Too few bits (%d) left\n", ret);
298
    }
299
    *last = 1;
300
    return 0;
301
}
302
303
347523471
static inline int wv_get_value_integer(WavpackFrameContext *s, uint32_t *crc,
304
                                       unsigned S)
305
{
306
    unsigned bit;
307
308
347523471
    if (s->extra_bits) {
309
352800
        S *= 1 << s->extra_bits;
310
311
352800
        if (s->got_extra_bits &&
312
352800
            get_bits_left(&s->gb_extra_bits) >= s->extra_bits) {
313
352800
            S   |= get_bits_long(&s->gb_extra_bits, s->extra_bits);
314
352800
            *crc = *crc * 9 + (S & 0xffff) * 3 + ((unsigned)S >> 16);
315
        }
316
    }
317
318
347523471
    bit = (S & s->and) | s->or;
319
347523471
    bit = ((S + bit) << s->shift) - bit;
320
321
347523471
    if (s->hybrid)
322
320166556
        bit = av_clip(bit, s->hybrid_minclip, s->hybrid_maxclip);
323
324
347523471
    return bit << s->post_shift;
325
}
326
327
3174484
static float wv_get_value_float(WavpackFrameContext *s, uint32_t *crc, int S)
328
{
329
    union {
330
        float    f;
331
        uint32_t u;
332
    } value;
333
334
    unsigned int sign;
335
3174484
    int exp = s->float_max_exp;
336
337
3174484
    if (s->got_extra_bits) {
338
828900
        const int max_bits  = 1 + 23 + 8 + 1;
339
828900
        const int left_bits = get_bits_left(&s->gb_extra_bits);
340
341
828900
        if (left_bits + 8 * AV_INPUT_BUFFER_PADDING_SIZE < max_bits)
342
            return 0.0;
343
    }
344
345
3174484
    if (S) {
346
3174479
        S  *= 1U << s->float_shift;
347
3174479
        sign = S < 0;
348
3174479
        if (sign)
349
1588502
            S = -(unsigned)S;
350
3174479
        if (S >= 0x1000000U) {
351
            if (s->got_extra_bits && get_bits1(&s->gb_extra_bits))
352
                S = get_bits(&s->gb_extra_bits, 23);
353
            else
354
                S = 0;
355
            exp = 255;
356
3174479
        } else if (exp) {
357
3174479
            int shift = 23 - av_log2(S);
358
3174479
            exp = s->float_max_exp;
359
3174479
            if (exp <= shift)
360
                shift = --exp;
361
3174479
            exp -= shift;
362
363
3174479
            if (shift) {
364
3130357
                S <<= shift;
365
3130357
                if ((s->float_flag & WV_FLT_SHIFT_ONES) ||
366
3130357
                    (s->got_extra_bits &&
367

817921
                     (s->float_flag & WV_FLT_SHIFT_SAME) &&
368
                     get_bits1(&s->gb_extra_bits))) {
369
                    S |= (1 << shift) - 1;
370
3130357
                } else if (s->got_extra_bits &&
371
817921
                           (s->float_flag & WV_FLT_SHIFT_SENT)) {
372
817921
                    S |= get_bits(&s->gb_extra_bits, shift);
373
                }
374
            }
375
        } else {
376
            exp = s->float_max_exp;
377
        }
378
3174479
        S &= 0x7fffff;
379
    } else {
380
5
        sign = 0;
381
5
        exp  = 0;
382

5
        if (s->got_extra_bits && (s->float_flag & WV_FLT_ZERO_SENT)) {
383
2
            if (get_bits1(&s->gb_extra_bits)) {
384
2
                S = get_bits(&s->gb_extra_bits, 23);
385
2
                if (s->float_max_exp >= 25)
386
2
                    exp = get_bits(&s->gb_extra_bits, 8);
387
2
                sign = get_bits1(&s->gb_extra_bits);
388
            } else {
389
                if (s->float_flag & WV_FLT_ZERO_SIGN)
390
                    sign = get_bits1(&s->gb_extra_bits);
391
            }
392
        }
393
    }
394
395
3174484
    *crc = *crc * 27 + S * 9 + exp * 3 + sign;
396
397
3174484
    value.u = (sign << 31) | (exp << 23) | S;
398
3174484
    return value.f;
399
}
400
401
static inline int wv_check_crc(WavpackFrameContext *s, uint32_t crc,
402
                               uint32_t crc_extra_bits)
403
{
404
    if (crc != s->CRC) {
405
        av_log(s->avctx, AV_LOG_ERROR, "CRC error\n");
406
        return AVERROR_INVALIDDATA;
407
    }
408
    if (s->got_extra_bits && crc_extra_bits != s->crc_extra_bits) {
409
        av_log(s->avctx, AV_LOG_ERROR, "Extra bits CRC error\n");
410
        return AVERROR_INVALIDDATA;
411
    }
412
413
    return 0;
414
}
415
416
static void init_ptable(int *table, int rate_i, int rate_s)
417
{
418
    int value = 0x808000, rate = rate_i << 8;
419
420
    for (int c = (rate + 128) >> 8; c--;)
421
        value += (DOWN - value) >> DECAY;
422
423
    for (int i = 0; i < PTABLE_BINS/2; i++) {
424
        table[i] = value;
425
        table[PTABLE_BINS-1-i] = 0x100ffff - value;
426
427
        if (value > 0x010000) {
428
            rate += (rate * rate_s + 128) >> 8;
429
430
            for (int c = (rate + 64) >> 7; c--;)
431
                value += (DOWN - value) >> DECAY;
432
        }
433
    }
434
}
435
436
typedef struct {
437
    int32_t value, fltr0, fltr1, fltr2, fltr3, fltr4, fltr5, fltr6, factor;
438
    unsigned int byte;
439
} DSDfilters;
440
441
static int wv_unpack_dsd_high(WavpackFrameContext *s, uint8_t *dst_left, uint8_t *dst_right)
442
{
443
    uint32_t checksum = 0xFFFFFFFF;
444
    uint8_t *dst_l = dst_left, *dst_r = dst_right;
445
    int total_samples = s->samples, stereo = dst_r ? 1 : 0;
446
    DSDfilters filters[2], *sp = filters;
447
    int rate_i, rate_s;
448
    uint32_t low, high, value;
449
450
    if (bytestream2_get_bytes_left(&s->gbyte) < (stereo ? 20 : 13))
451
        return AVERROR_INVALIDDATA;
452
453
    rate_i = bytestream2_get_byte(&s->gbyte);
454
    rate_s = bytestream2_get_byte(&s->gbyte);
455
456
    if (rate_s != RATE_S)
457
        return AVERROR_INVALIDDATA;
458
459
    init_ptable(s->ptable, rate_i, rate_s);
460
461
    for (int channel = 0; channel < stereo + 1; channel++) {
462
        DSDfilters *sp = filters + channel;
463
464
        sp->fltr1 = bytestream2_get_byte(&s->gbyte) << (PRECISION - 8);
465
        sp->fltr2 = bytestream2_get_byte(&s->gbyte) << (PRECISION - 8);
466
        sp->fltr3 = bytestream2_get_byte(&s->gbyte) << (PRECISION - 8);
467
        sp->fltr4 = bytestream2_get_byte(&s->gbyte) << (PRECISION - 8);
468
        sp->fltr5 = bytestream2_get_byte(&s->gbyte) << (PRECISION - 8);
469
        sp->fltr6 = 0;
470
        sp->factor = bytestream2_get_byte(&s->gbyte) & 0xff;
471
        sp->factor |= (bytestream2_get_byte(&s->gbyte) << 8) & 0xff00;
472
        sp->factor = (int32_t)((uint32_t)sp->factor << 16) >> 16;
473
    }
474
475
    value = bytestream2_get_be32(&s->gbyte);
476
    high = 0xffffffff;
477
    low = 0x0;
478
479
    while (total_samples--) {
480
        int bitcount = 8;
481
482
        sp[0].value = sp[0].fltr1 - sp[0].fltr5 + ((sp[0].fltr6 * sp[0].factor) >> 2);
483
484
        if (stereo)
485
            sp[1].value = sp[1].fltr1 - sp[1].fltr5 + ((sp[1].fltr6 * sp[1].factor) >> 2);
486
487
        while (bitcount--) {
488
            int32_t *pp = s->ptable + ((sp[0].value >> (PRECISION - PRECISION_USE)) & PTABLE_MASK);
489
            uint32_t split = low + ((high - low) >> 8) * (*pp >> 16);
490
491
            if (value <= split) {
492
                high = split;
493
                *pp += (UP - *pp) >> DECAY;
494
                sp[0].fltr0 = -1;
495
            } else {
496
                low = split + 1;
497
                *pp += (DOWN - *pp) >> DECAY;
498
                sp[0].fltr0 = 0;
499
            }
500
501
            while (DSD_BYTE_READY(high, low) && bytestream2_get_bytes_left(&s->gbyte)) {
502
                value = (value << 8) | bytestream2_get_byte(&s->gbyte);
503
                high = (high << 8) | 0xff;
504
                low <<= 8;
505
            }
506
507
            sp[0].value += sp[0].fltr6 * 8;
508
            sp[0].byte = (sp[0].byte << 1) | (sp[0].fltr0 & 1);
509
            sp[0].factor += (((sp[0].value ^ sp[0].fltr0) >> 31) | 1) &
510
                ((sp[0].value ^ (sp[0].value - (sp[0].fltr6 * 16))) >> 31);
511
            sp[0].fltr1 += ((sp[0].fltr0 & VALUE_ONE) - sp[0].fltr1) >> 6;
512
            sp[0].fltr2 += ((sp[0].fltr0 & VALUE_ONE) - sp[0].fltr2) >> 4;
513
            sp[0].fltr3 += (sp[0].fltr2 - sp[0].fltr3) >> 4;
514
            sp[0].fltr4 += (sp[0].fltr3 - sp[0].fltr4) >> 4;
515
            sp[0].value = (sp[0].fltr4 - sp[0].fltr5) >> 4;
516
            sp[0].fltr5 += sp[0].value;
517
            sp[0].fltr6 += (sp[0].value - sp[0].fltr6) >> 3;
518
            sp[0].value = sp[0].fltr1 - sp[0].fltr5 + ((sp[0].fltr6 * sp[0].factor) >> 2);
519
520
            if (!stereo)
521
                continue;
522
523
            pp = s->ptable + ((sp[1].value >> (PRECISION - PRECISION_USE)) & PTABLE_MASK);
524
            split = low + ((high - low) >> 8) * (*pp >> 16);
525
526
            if (value <= split) {
527
                high = split;
528
                *pp += (UP - *pp) >> DECAY;
529
                sp[1].fltr0 = -1;
530
            } else {
531
                low = split + 1;
532
                *pp += (DOWN - *pp) >> DECAY;
533
                sp[1].fltr0 = 0;
534
            }
535
536
            while (DSD_BYTE_READY(high, low) && bytestream2_get_bytes_left(&s->gbyte)) {
537
                value = (value << 8) | bytestream2_get_byte(&s->gbyte);
538
                high = (high << 8) | 0xff;
539
                low <<= 8;
540
            }
541
542
            sp[1].value += sp[1].fltr6 * 8;
543
            sp[1].byte = (sp[1].byte << 1) | (sp[1].fltr0 & 1);
544
            sp[1].factor += (((sp[1].value ^ sp[1].fltr0) >> 31) | 1) &
545
                ((sp[1].value ^ (sp[1].value - (sp[1].fltr6 * 16))) >> 31);
546
            sp[1].fltr1 += ((sp[1].fltr0 & VALUE_ONE) - sp[1].fltr1) >> 6;
547
            sp[1].fltr2 += ((sp[1].fltr0 & VALUE_ONE) - sp[1].fltr2) >> 4;
548
            sp[1].fltr3 += (sp[1].fltr2 - sp[1].fltr3) >> 4;
549
            sp[1].fltr4 += (sp[1].fltr3 - sp[1].fltr4) >> 4;
550
            sp[1].value = (sp[1].fltr4 - sp[1].fltr5) >> 4;
551
            sp[1].fltr5 += sp[1].value;
552
            sp[1].fltr6 += (sp[1].value - sp[1].fltr6) >> 3;
553
            sp[1].value = sp[1].fltr1 - sp[1].fltr5 + ((sp[1].fltr6 * sp[1].factor) >> 2);
554
        }
555
556
        checksum += (checksum << 1) + (*dst_l = sp[0].byte & 0xff);
557
        sp[0].factor -= (sp[0].factor + 512) >> 10;
558
        dst_l += 4;
559
560
        if (stereo) {
561
            checksum += (checksum << 1) + (*dst_r = filters[1].byte & 0xff);
562
            filters[1].factor -= (filters[1].factor + 512) >> 10;
563
            dst_r += 4;
564
        }
565
    }
566
567
    if (wv_check_crc(s, checksum, 0)) {
568
        if (s->avctx->err_recognition & AV_EF_CRCCHECK)
569
            return AVERROR_INVALIDDATA;
570
571
        memset(dst_left, 0x69, s->samples * 4);
572
573
        if (dst_r)
574
            memset(dst_right, 0x69, s->samples * 4);
575
    }
576
577
    return 0;
578
}
579
580
static int wv_unpack_dsd_fast(WavpackFrameContext *s, uint8_t *dst_left, uint8_t *dst_right)
581
{
582
    uint8_t *dst_l = dst_left, *dst_r = dst_right;
583
    uint8_t history_bits, max_probability;
584
    int total_summed_probabilities  = 0;
585
    int total_samples               = s->samples;
586
    uint8_t *vlb                    = s->value_lookup_buffer;
587
    int history_bins, p0, p1, chan;
588
    uint32_t checksum               = 0xFFFFFFFF;
589
    uint32_t low, high, value;
590
591
    if (!bytestream2_get_bytes_left(&s->gbyte))
592
        return AVERROR_INVALIDDATA;
593
594
    history_bits = bytestream2_get_byte(&s->gbyte);
595
596
    if (!bytestream2_get_bytes_left(&s->gbyte) || history_bits > MAX_HISTORY_BITS)
597
        return AVERROR_INVALIDDATA;
598
599
    history_bins = 1 << history_bits;
600
    max_probability = bytestream2_get_byte(&s->gbyte);
601
602
    if (max_probability < 0xff) {
603
        uint8_t *outptr = (uint8_t *)s->probabilities;
604
        uint8_t *outend = outptr + sizeof(*s->probabilities) * history_bins;
605
606
        while (outptr < outend && bytestream2_get_bytes_left(&s->gbyte)) {
607
            int code = bytestream2_get_byte(&s->gbyte);
608
609
            if (code > max_probability) {
610
                int zcount = code - max_probability;
611
612
                while (outptr < outend && zcount--)
613
                    *outptr++ = 0;
614
            } else if (code) {
615
                *outptr++ = code;
616
            }
617
            else {
618
                break;
619
            }
620
        }
621
622
        if (outptr < outend ||
623
            (bytestream2_get_bytes_left(&s->gbyte) && bytestream2_get_byte(&s->gbyte)))
624
                return AVERROR_INVALIDDATA;
625
    } else if (bytestream2_get_bytes_left(&s->gbyte) > (int)sizeof(*s->probabilities) * history_bins) {
626
        bytestream2_get_buffer(&s->gbyte, (uint8_t *)s->probabilities,
627
            sizeof(*s->probabilities) * history_bins);
628
    } else {
629
        return AVERROR_INVALIDDATA;
630
    }
631
632
    for (p0 = 0; p0 < history_bins; p0++) {
633
        int32_t sum_values = 0;
634
635
        for (int i = 0; i < 256; i++)
636
            s->summed_probabilities[p0][i] = sum_values += s->probabilities[p0][i];
637
638
        if (sum_values) {
639
            total_summed_probabilities += sum_values;
640
641
            if (total_summed_probabilities > history_bins * MAX_BIN_BYTES)
642
                return AVERROR_INVALIDDATA;
643
644
            s->value_lookup[p0] = vlb;
645
646
            for (int i = 0; i < 256; i++) {
647
                int c = s->probabilities[p0][i];
648
649
                while (c--)
650
                    *vlb++ = i;
651
            }
652
        }
653
    }
654
655
    if (bytestream2_get_bytes_left(&s->gbyte) < 4)
656
        return AVERROR_INVALIDDATA;
657
658
    chan = p0 = p1 = 0;
659
    low = 0; high = 0xffffffff;
660
    value = bytestream2_get_be32(&s->gbyte);
661
662
    if (dst_r)
663
        total_samples *= 2;
664
665
    while (total_samples--) {
666
        unsigned int mult, index, code;
667
668
        if (!s->summed_probabilities[p0][255])
669
            return AVERROR_INVALIDDATA;
670
671
        mult = (high - low) / s->summed_probabilities[p0][255];
672
673
        if (!mult) {
674
            if (bytestream2_get_bytes_left(&s->gbyte) >= 4)
675
                value = bytestream2_get_be32(&s->gbyte);
676
677
            low = 0;
678
            high = 0xffffffff;
679
            mult = high / s->summed_probabilities[p0][255];
680
681
            if (!mult)
682
                return AVERROR_INVALIDDATA;
683
        }
684
685
        index = (value - low) / mult;
686
687
        if (index >= s->summed_probabilities[p0][255])
688
            return AVERROR_INVALIDDATA;
689
690
        if (!dst_r) {
691
            if ((*dst_l = code = s->value_lookup[p0][index]))
692
                low += s->summed_probabilities[p0][code-1] * mult;
693
694
            dst_l += 4;
695
        } else {
696
            if ((code = s->value_lookup[p0][index]))
697
                low += s->summed_probabilities[p0][code-1] * mult;
698
699
            if (chan) {
700
                *dst_r = code;
701
                dst_r += 4;
702
            }
703
            else {
704
                *dst_l = code;
705
                dst_l += 4;
706
            }
707
708
            chan ^= 1;
709
        }
710
711
        high = low + s->probabilities[p0][code] * mult - 1;
712
        checksum += (checksum << 1) + code;
713
714
        if (!dst_r) {
715
            p0 = code & (history_bins-1);
716
        } else {
717
            p0 = p1;
718
            p1 = code & (history_bins-1);
719
        }
720
721
        while (DSD_BYTE_READY(high, low) && bytestream2_get_bytes_left(&s->gbyte)) {
722
            value = (value << 8) | bytestream2_get_byte(&s->gbyte);
723
            high = (high << 8) | 0xff;
724
            low <<= 8;
725
        }
726
    }
727
728
    if (wv_check_crc(s, checksum, 0)) {
729
        if (s->avctx->err_recognition & AV_EF_CRCCHECK)
730
            return AVERROR_INVALIDDATA;
731
732
        memset(dst_left, 0x69, s->samples * 4);
733
734
        if (dst_r)
735
            memset(dst_right, 0x69, s->samples * 4);
736
    }
737
738
    return 0;
739
}
740
741
static int wv_unpack_dsd_copy(WavpackFrameContext *s, uint8_t *dst_left, uint8_t *dst_right)
742
{
743
    uint8_t *dst_l = dst_left, *dst_r = dst_right;
744
    int total_samples           = s->samples;
745
    uint32_t checksum           = 0xFFFFFFFF;
746
747
    if (bytestream2_get_bytes_left(&s->gbyte) != total_samples * (dst_r ? 2 : 1))
748
        return AVERROR_INVALIDDATA;
749
750
    while (total_samples--) {
751
        checksum += (checksum << 1) + (*dst_l = bytestream2_get_byte(&s->gbyte));
752
        dst_l += 4;
753
754
        if (dst_r) {
755
            checksum += (checksum << 1) + (*dst_r = bytestream2_get_byte(&s->gbyte));
756
            dst_r += 4;
757
        }
758
    }
759
760
    if (wv_check_crc(s, checksum, 0)) {
761
        if (s->avctx->err_recognition & AV_EF_CRCCHECK)
762
            return AVERROR_INVALIDDATA;
763
764
        memset(dst_left, 0x69, s->samples * 4);
765
766
        if (dst_r)
767
            memset(dst_right, 0x69, s->samples * 4);
768
    }
769
770
    return 0;
771
}
772
773
7590
static inline int wv_unpack_stereo(WavpackFrameContext *s, GetBitContext *gb,
774
                                   void *dst_l, void *dst_r, const int type)
775
{
776
7590
    int i, j, count = 0;
777
    int last, t;
778
    int A, B, L, L2, R, R2;
779
7590
    int pos                 = 0;
780
7590
    uint32_t crc            = 0xFFFFFFFF;
781
7590
    uint32_t crc_extra_bits = 0xFFFFFFFF;
782
7590
    int16_t *dst16_l        = dst_l;
783
7590
    int16_t *dst16_r        = dst_r;
784
7590
    int32_t *dst32_l        = dst_l;
785
7590
    int32_t *dst32_r        = dst_r;
786
7590
    float *dstfl_l          = dst_l;
787
7590
    float *dstfl_r          = dst_r;
788
789
7590
    s->one = s->zero = s->zeroes = 0;
790
    do {
791
167543298
        L = wv_get_value(s, gb, 0, &last);
792
167543298
        if (last)
793
            break;
794
167543298
        R = wv_get_value(s, gb, 1, &last);
795
167543298
        if (last)
796
            break;
797
1041492548
        for (i = 0; i < s->terms; i++) {
798
873949250
            t = s->decorr[i].value;
799
873949250
            if (t > 0) {
800
857209178
                if (t > 8) {
801
486031480
                    if (t & 1) {
802
157246340
                        A = 2U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
803
157246340
                        B = 2U * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1];
804
                    } else {
805
328785140
                        A = (int)(3U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
806
328785140
                        B = (int)(3U * s->decorr[i].samplesB[0] - s->decorr[i].samplesB[1]) >> 1;
807
                    }
808
486031480
                    s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
809
486031480
                    s->decorr[i].samplesB[1] = s->decorr[i].samplesB[0];
810
486031480
                    j                        = 0;
811
                } else {
812
371177698
                    A = s->decorr[i].samplesA[pos];
813
371177698
                    B = s->decorr[i].samplesB[pos];
814
371177698
                    j = (pos + t) & 7;
815
                }
816
857209178
                if (type != AV_SAMPLE_FMT_S16P) {
817
21296280
                    L2 = L + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
818
21296280
                    R2 = R + ((s->decorr[i].weightB * (int64_t)B + 512) >> 10);
819
                } else {
820
835912898
                    L2 = L + (unsigned)((int)(s->decorr[i].weightA * (unsigned)A + 512) >> 10);
821
835912898
                    R2 = R + (unsigned)((int)(s->decorr[i].weightB * (unsigned)B + 512) >> 10);
822
                }
823

857209178
                if (A && L)
824
189144006
                    s->decorr[i].weightA -= ((((L ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
825

857209178
                if (B && R)
826
187155846
                    s->decorr[i].weightB -= ((((R ^ B) >> 30) & 2) - 1) * s->decorr[i].delta;
827
857209178
                s->decorr[i].samplesA[j] = L = L2;
828
857209178
                s->decorr[i].samplesB[j] = R = R2;
829
16740072
            } else if (t == -1) {
830
3724236
                if (type != AV_SAMPLE_FMT_S16P)
831
                    L2 = L + ((s->decorr[i].weightA * (int64_t)s->decorr[i].samplesA[0] + 512) >> 10);
832
                else
833
3724236
                    L2 = L + (unsigned)((int)(s->decorr[i].weightA * (unsigned)s->decorr[i].samplesA[0] + 512) >> 10);
834


3724236
                UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, s->decorr[i].samplesA[0], L);
835
3724236
                L = L2;
836
3724236
                if (type != AV_SAMPLE_FMT_S16P)
837
                    R2 = R + ((s->decorr[i].weightB * (int64_t)L2 + 512) >> 10);
838
                else
839
3724236
                    R2 = R + (unsigned)((int)(s->decorr[i].weightB * (unsigned)L2 + 512) >> 10);
840


3724236
                UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, L2, R);
841
3724236
                R                        = R2;
842
3724236
                s->decorr[i].samplesA[0] = R;
843
            } else {
844
13015836
                if (type != AV_SAMPLE_FMT_S16P)
845
815850
                    R2 = R + ((s->decorr[i].weightB * (int64_t)s->decorr[i].samplesB[0] + 512) >> 10);
846
                else
847
12199986
                    R2 = R + (unsigned)((int)(s->decorr[i].weightB * (unsigned)s->decorr[i].samplesB[0] + 512) >> 10);
848


13015836
                UPDATE_WEIGHT_CLIP(s->decorr[i].weightB, s->decorr[i].delta, s->decorr[i].samplesB[0], R);
849
13015836
                R = R2;
850
851
13015836
                if (t == -3) {
852
10657190
                    R2                       = s->decorr[i].samplesA[0];
853
10657190
                    s->decorr[i].samplesA[0] = R;
854
                }
855
856
13015836
                if (type != AV_SAMPLE_FMT_S16P)
857
815850
                    L2 = L + ((s->decorr[i].weightA * (int64_t)R2 + 512) >> 10);
858
                else
859
12199986
                    L2 = L + (unsigned)((int)(s->decorr[i].weightA * (unsigned)R2 + 512) >> 10);
860


13015836
                UPDATE_WEIGHT_CLIP(s->decorr[i].weightA, s->decorr[i].delta, R2, L);
861
13015836
                L                        = L2;
862
13015836
                s->decorr[i].samplesB[0] = L;
863
            }
864
        }
865
866
167543298
        if (type == AV_SAMPLE_FMT_S16P) {
867
163120872
            if (FFABS((int64_t)L) + FFABS((int64_t)R) > (1<<19)) {
868
1
                av_log(s->avctx, AV_LOG_ERROR, "sample %d %d too large\n", L, R);
869
1
                return AVERROR_INVALIDDATA;
870
            }
871
        }
872
873
167543297
        pos = (pos + 1) & 7;
874
167543297
        if (s->joint)
875
161271851
            L += (unsigned)(R -= (unsigned)(L >> 1));
876
167543297
        crc = (crc * 3 + L) * 3 + R;
877
878
167543297
        if (type == AV_SAMPLE_FMT_FLTP) {
879
1371242
            *dstfl_l++ = wv_get_value_float(s, &crc_extra_bits, L);
880
1371242
            *dstfl_r++ = wv_get_value_float(s, &crc_extra_bits, R);
881
166172055
        } else if (type == AV_SAMPLE_FMT_S32P) {
882
3051184
            *dst32_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
883
3051184
            *dst32_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
884
        } else {
885
163120871
            *dst16_l++ = wv_get_value_integer(s, &crc_extra_bits, L);
886
163120871
            *dst16_r++ = wv_get_value_integer(s, &crc_extra_bits, R);
887
        }
888
167543297
        count++;
889

167543297
    } while (!last && count < s->samples);
890
891

7589
    if (last && count < s->samples) {
892
        int size = av_get_bytes_per_sample(type);
893
        memset((uint8_t*)dst_l + count*size, 0, (s->samples-count)*size);
894
        memset((uint8_t*)dst_r + count*size, 0, (s->samples-count)*size);
895
    }
896
897

7589
    if ((s->avctx->err_recognition & AV_EF_CRCCHECK) &&
898
        wv_check_crc(s, crc, crc_extra_bits))
899
        return AVERROR_INVALIDDATA;
900
901
7589
    return 0;
902
}
903
904
689
static inline int wv_unpack_mono(WavpackFrameContext *s, GetBitContext *gb,
905
                                 void *dst, const int type)
906
{
907
689
    int i, j, count = 0;
908
    int last, t;
909
    int A, S, T;
910
689
    int pos                  = 0;
911
689
    uint32_t crc             = 0xFFFFFFFF;
912
689
    uint32_t crc_extra_bits  = 0xFFFFFFFF;
913
689
    int16_t *dst16           = dst;
914
689
    int32_t *dst32           = dst;
915
689
    float *dstfl             = dst;
916
917
689
    s->one = s->zero = s->zeroes = 0;
918
    do {
919
15611361
        T = wv_get_value(s, gb, 0, &last);
920
15611361
        S = 0;
921
15611361
        if (last)
922
            break;
923
120488278
        for (i = 0; i < s->terms; i++) {
924
104876917
            t = s->decorr[i].value;
925
104876917
            if (t > 8) {
926
44372416
                if (t & 1)
927
11939195
                    A =  2U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1];
928
                else
929
32433221
                    A = (int)(3U * s->decorr[i].samplesA[0] - s->decorr[i].samplesA[1]) >> 1;
930
44372416
                s->decorr[i].samplesA[1] = s->decorr[i].samplesA[0];
931
44372416
                j                        = 0;
932
            } else {
933
60504501
                A = s->decorr[i].samplesA[pos];
934
60504501
                j = (pos + t) & 7;
935
            }
936
104876917
            if (type != AV_SAMPLE_FMT_S16P)
937
29647840
                S = T + ((s->decorr[i].weightA * (int64_t)A + 512) >> 10);
938
            else
939
75229077
                S = T + (unsigned)((int)(s->decorr[i].weightA * (unsigned)A + 512) >> 10);
940

104876917
            if (A && T)
941
92156442
                s->decorr[i].weightA -= ((((T ^ A) >> 30) & 2) - 1) * s->decorr[i].delta;
942
104876917
            s->decorr[i].samplesA[j] = T = S;
943
        }
944
15611361
        pos = (pos + 1) & 7;
945
15611361
        crc = crc * 3 + S;
946
947
15611361
        if (type == AV_SAMPLE_FMT_FLTP) {
948
432000
            *dstfl++ = wv_get_value_float(s, &crc_extra_bits, S);
949
15179361
        } else if (type == AV_SAMPLE_FMT_S32P) {
950
4691168
            *dst32++ = wv_get_value_integer(s, &crc_extra_bits, S);
951
        } else {
952
10488193
            *dst16++ = wv_get_value_integer(s, &crc_extra_bits, S);
953
        }
954
15611361
        count++;
955

15611361
    } while (!last && count < s->samples);
956
957

689
    if (last && count < s->samples) {
958
        int size = av_get_bytes_per_sample(type);
959
        memset((uint8_t*)dst + count*size, 0, (s->samples-count)*size);
960
    }
961
962
689
    if (s->avctx->err_recognition & AV_EF_CRCCHECK) {
963
        int ret = wv_check_crc(s, crc, crc_extra_bits);
964
        if (ret < 0 && s->avctx->err_recognition & AV_EF_EXPLODE)
965
            return ret;
966
    }
967
968
689
    return 0;
969
}
970
971
118
static av_cold int wv_alloc_frame_context(WavpackContext *c)
972
{
973
118
    if (c->fdec_num == WV_MAX_FRAME_DECODERS)
974
        return -1;
975
976
118
    c->fdec[c->fdec_num] = av_mallocz(sizeof(**c->fdec));
977
118
    if (!c->fdec[c->fdec_num])
978
        return -1;
979
118
    c->fdec_num++;
980
118
    c->fdec[c->fdec_num - 1]->avctx = c->avctx;
981
982
118
    return 0;
983
}
984
985
7547
static int wv_dsd_reset(WavpackContext *s, int channels)
986
{
987
    int i;
988
989
7547
    s->dsdctx = NULL;
990
7547
    s->dsd_channels = 0;
991
7547
    av_buffer_unref(&s->dsd_ref);
992
993
7547
    if (!channels)
994
7547
        return 0;
995
996
    if (channels > INT_MAX / sizeof(*s->dsdctx))
997
        return AVERROR(EINVAL);
998
999
    s->dsd_ref = av_buffer_allocz(channels * sizeof(*s->dsdctx));
1000
    if (!s->dsd_ref)
1001
        return AVERROR(ENOMEM);
1002
    s->dsdctx = (DSDContext*)s->dsd_ref->data;
1003
    s->dsd_channels = channels;
1004
1005
    for (i = 0; i < channels; i++)
1006
        memset(s->dsdctx[i].buf, 0x69, sizeof(s->dsdctx[i].buf));
1007
1008
    return 0;
1009
}
1010
1011
#if HAVE_THREADS
1012
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
1013
{
1014
    WavpackContext *fsrc = src->priv_data;
1015
    WavpackContext *fdst = dst->priv_data;
1016
    int ret;
1017
1018
    if (dst == src)
1019
        return 0;
1020
1021
    ff_thread_release_buffer(dst, &fdst->curr_frame);
1022
    if (fsrc->curr_frame.f->data[0]) {
1023
        if ((ret = ff_thread_ref_frame(&fdst->curr_frame, &fsrc->curr_frame)) < 0)
1024
            return ret;
1025
    }
1026
1027
    av_buffer_unref(&fdst->dsd_ref);
1028
    fdst->dsdctx = NULL;
1029
    fdst->dsd_channels = 0;
1030
    if (fsrc->dsd_ref) {
1031
        fdst->dsd_ref = av_buffer_ref(fsrc->dsd_ref);
1032
        if (!fdst->dsd_ref)
1033
            return AVERROR(ENOMEM);
1034
        fdst->dsdctx = (DSDContext*)fdst->dsd_ref->data;
1035
        fdst->dsd_channels = fsrc->dsd_channels;
1036
    }
1037
1038
    return 0;
1039
}
1040
#endif
1041
1042
64
static av_cold int wavpack_decode_init(AVCodecContext *avctx)
1043
{
1044
64
    WavpackContext *s = avctx->priv_data;
1045
1046
64
    s->avctx = avctx;
1047
1048
64
    s->fdec_num = 0;
1049
1050
64
    s->curr_frame.f = av_frame_alloc();
1051
64
    s->prev_frame.f = av_frame_alloc();
1052
1053

64
    if (!s->curr_frame.f || !s->prev_frame.f)
1054
        return AVERROR(ENOMEM);
1055
1056
64
    ff_init_dsd_data();
1057
1058
64
    return 0;
1059
}
1060
1061
64
static av_cold int wavpack_decode_end(AVCodecContext *avctx)
1062
{
1063
64
    WavpackContext *s = avctx->priv_data;
1064
1065
182
    for (int i = 0; i < s->fdec_num; i++)
1066
118
        av_freep(&s->fdec[i]);
1067
64
    s->fdec_num = 0;
1068
1069
64
    ff_thread_release_buffer(avctx, &s->curr_frame);
1070
64
    av_frame_free(&s->curr_frame.f);
1071
1072
64
    ff_thread_release_buffer(avctx, &s->prev_frame);
1073
64
    av_frame_free(&s->prev_frame.f);
1074
1075
64
    av_buffer_unref(&s->dsd_ref);
1076
1077
64
    return 0;
1078
}
1079
1080
8279
static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
1081
                                const uint8_t *buf, int buf_size)
1082
{
1083
8279
    WavpackContext *wc = avctx->priv_data;
1084
    WavpackFrameContext *s;
1085
    GetByteContext gb;
1086
    enum AVSampleFormat sample_fmt;
1087
8279
    void *samples_l = NULL, *samples_r = NULL;
1088
    int ret;
1089
8279
    int got_terms   = 0, got_weights = 0, got_samples = 0,
1090
8279
        got_entropy = 0, got_pcm     = 0, got_float   = 0, got_hybrid = 0;
1091
8279
    int got_dsd = 0;
1092
    int i, j, id, size, ssize, weights, t;
1093
8279
    int bpp, chan = 0, orig_bpp, sample_rate = 0, rate_x = 1, dsd_mode = 0;
1094
    int multiblock;
1095
8279
    uint64_t chmask = 0;
1096
1097

8279
    if (block_no >= wc->fdec_num && wv_alloc_frame_context(wc) < 0) {
1098
        av_log(avctx, AV_LOG_ERROR, "Error creating frame decode context\n");
1099
        return AVERROR_INVALIDDATA;
1100
    }
1101
1102
8279
    s = wc->fdec[block_no];
1103
8279
    if (!s) {
1104
        av_log(avctx, AV_LOG_ERROR, "Context for block %d is not present\n",
1105
               block_no);
1106
        return AVERROR_INVALIDDATA;
1107
    }
1108
1109
8279
    memset(s->decorr, 0, MAX_TERMS * sizeof(Decorr));
1110
8279
    memset(s->ch, 0, sizeof(s->ch));
1111
8279
    s->extra_bits     = 0;
1112
8279
    s->and            = s->or = s->shift = 0;
1113
8279
    s->got_extra_bits = 0;
1114
1115
8279
    bytestream2_init(&gb, buf, buf_size);
1116
1117
8279
    s->samples = bytestream2_get_le32(&gb);
1118
8279
    if (s->samples != wc->samples) {
1119
        av_log(avctx, AV_LOG_ERROR, "Mismatching number of samples in "
1120
               "a sequence: %d and %d\n", wc->samples, s->samples);
1121
        return AVERROR_INVALIDDATA;
1122
    }
1123
8279
    s->frame_flags = bytestream2_get_le32(&gb);
1124
1125
8279
    if (s->frame_flags & (WV_FLOAT_DATA | WV_DSD_DATA))
1126
67
        sample_fmt = AV_SAMPLE_FMT_FLTP;
1127
8212
    else if ((s->frame_flags & 0x03) <= 1)
1128
7886
        sample_fmt = AV_SAMPLE_FMT_S16P;
1129
    else
1130
326
        sample_fmt          = AV_SAMPLE_FMT_S32P;
1131
1132

8279
    if (wc->ch_offset && avctx->sample_fmt != sample_fmt)
1133
        return AVERROR_INVALIDDATA;
1134
1135
8279
    bpp            = av_get_bytes_per_sample(sample_fmt);
1136
8279
    orig_bpp       = ((s->frame_flags & 0x03) + 1) << 3;
1137
8279
    multiblock     = (s->frame_flags & WV_SINGLE_BLOCK) != WV_SINGLE_BLOCK;
1138
1139
8279
    s->stereo         = !(s->frame_flags & WV_MONO);
1140
8279
    s->stereo_in      =  (s->frame_flags & WV_FALSE_STEREO) ? 0 : s->stereo;
1141
8279
    s->joint          =   s->frame_flags & WV_JOINT_STEREO;
1142
8279
    s->hybrid         =   s->frame_flags & WV_HYBRID_MODE;
1143
8279
    s->hybrid_bitrate =   s->frame_flags & WV_HYBRID_BITRATE;
1144
8279
    s->post_shift     = bpp * 8 - orig_bpp + ((s->frame_flags >> 13) & 0x1f);
1145

8279
    if (s->post_shift < 0 || s->post_shift > 31) {
1146
        return AVERROR_INVALIDDATA;
1147
    }
1148
8279
    s->hybrid_maxclip =  ((1LL << (orig_bpp - 1)) - 1);
1149
8279
    s->hybrid_minclip = ((-1UL << (orig_bpp - 1)));
1150
8279
    s->CRC            = bytestream2_get_le32(&gb);
1151
1152
    // parse metadata blocks
1153
57813
    while (bytestream2_get_bytes_left(&gb)) {
1154
49534
        id   = bytestream2_get_byte(&gb);
1155
49534
        size = bytestream2_get_byte(&gb);
1156
49534
        if (id & WP_IDF_LONG)
1157
8305
            size |= (bytestream2_get_le16u(&gb)) << 8;
1158
49534
        size <<= 1; // size is specified in words
1159
49534
        ssize  = size;
1160
49534
        if (id & WP_IDF_ODD)
1161
8738
            size--;
1162
49534
        if (size < 0) {
1163
            av_log(avctx, AV_LOG_ERROR,
1164
                   "Got incorrect block %02X with size %i\n", id, size);
1165
            break;
1166
        }
1167
49534
        if (bytestream2_get_bytes_left(&gb) < ssize) {
1168
            av_log(avctx, AV_LOG_ERROR,
1169
                   "Block size %i is out of bounds\n", size);
1170
            break;
1171
        }
1172



49534
        switch (id & WP_IDF_MASK) {
1173
8279
        case WP_ID_DECTERMS:
1174
8279
            if (size > MAX_TERMS) {
1175
                av_log(avctx, AV_LOG_ERROR, "Too many decorrelation terms\n");
1176
                s->terms = 0;
1177
                bytestream2_skip(&gb, ssize);
1178
                continue;
1179
            }
1180
8279
            s->terms = size;
1181
52618
            for (i = 0; i < s->terms; i++) {
1182
44339
                uint8_t val = bytestream2_get_byte(&gb);
1183
44339
                s->decorr[s->terms - i - 1].value = (val & 0x1F) - 5;
1184
44339
                s->decorr[s->terms - i - 1].delta =  val >> 5;
1185
            }
1186
8279
            got_terms = 1;
1187
8279
            break;
1188
8279
        case WP_ID_DECWEIGHTS:
1189
8279
            if (!got_terms) {
1190
                av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
1191
                continue;
1192
            }
1193
8279
            weights = size >> s->stereo_in;
1194

8279
            if (weights > MAX_TERMS || weights > s->terms) {
1195
                av_log(avctx, AV_LOG_ERROR, "Too many decorrelation weights\n");
1196
                bytestream2_skip(&gb, ssize);
1197
                continue;
1198
            }
1199
22850
            for (i = 0; i < weights; i++) {
1200
14571
                t = (int8_t)bytestream2_get_byte(&gb);
1201
14571
                s->decorr[s->terms - i - 1].weightA = t * (1 << 3);
1202
14571
                if (s->decorr[s->terms - i - 1].weightA > 0)
1203
9857
                    s->decorr[s->terms - i - 1].weightA +=
1204
9857
                        (s->decorr[s->terms - i - 1].weightA + 64) >> 7;
1205
14571
                if (s->stereo_in) {
1206
9956
                    t = (int8_t)bytestream2_get_byte(&gb);
1207
9956
                    s->decorr[s->terms - i - 1].weightB = t * (1 << 3);
1208
9956
                    if (s->decorr[s->terms - i - 1].weightB > 0)
1209
6850
                        s->decorr[s->terms - i - 1].weightB +=
1210
6850
                            (s->decorr[s->terms - i - 1].weightB + 64) >> 7;
1211
                }
1212
            }
1213
8279
            got_weights = 1;
1214
8279
            break;
1215
8279
        case WP_ID_DECSAMPLES:
1216
8279
            if (!got_terms) {
1217
                av_log(avctx, AV_LOG_ERROR, "No decorrelation terms met\n");
1218
                continue;
1219
            }
1220
8279
            t = 0;
1221

16552
            for (i = s->terms - 1; (i >= 0) && (t < size); i--) {
1222
8273
                if (s->decorr[i].value > 8) {
1223
8056
                    s->decorr[i].samplesA[0] =
1224
8056
                        wp_exp2(bytestream2_get_le16(&gb));
1225
8056
                    s->decorr[i].samplesA[1] =
1226
8056
                        wp_exp2(bytestream2_get_le16(&gb));
1227
1228
8056
                    if (s->stereo_in) {
1229
7452
                        s->decorr[i].samplesB[0] =
1230
7452
                            wp_exp2(bytestream2_get_le16(&gb));
1231
7452
                        s->decorr[i].samplesB[1] =
1232
7452
                            wp_exp2(bytestream2_get_le16(&gb));
1233
7452
                        t                       += 4;
1234
                    }
1235
8056
                    t += 4;
1236
217
                } else if (s->decorr[i].value < 0) {
1237
                    s->decorr[i].samplesA[0] =
1238
                        wp_exp2(bytestream2_get_le16(&gb));
1239
                    s->decorr[i].samplesB[0] =
1240
                        wp_exp2(bytestream2_get_le16(&gb));
1241
                    t                       += 4;
1242
                } else {
1243
592
                    for (j = 0; j < s->decorr[i].value; j++) {
1244
375
                        s->decorr[i].samplesA[j] =
1245
375
                            wp_exp2(bytestream2_get_le16(&gb));
1246
375
                        if (s->stereo_in) {
1247
221
                            s->decorr[i].samplesB[j] =
1248
221
                                wp_exp2(bytestream2_get_le16(&gb));
1249
                        }
1250
                    }
1251
217
                    t += s->decorr[i].value * 2 * (s->stereo_in + 1);
1252
                }
1253
            }
1254
8279
            got_samples = 1;
1255
8279
            break;
1256
8279
        case WP_ID_ENTROPY:
1257
8279
            if (size != 6 * (s->stereo_in + 1)) {
1258
                av_log(avctx, AV_LOG_ERROR,
1259
                       "Entropy vars size should be %i, got %i.\n",
1260
                       6 * (s->stereo_in + 1), size);
1261
                bytestream2_skip(&gb, ssize);
1262
                continue;
1263
            }
1264
24148
            for (j = 0; j <= s->stereo_in; j++)
1265
63476
                for (i = 0; i < 3; i++) {
1266
47607
                    s->ch[j].median[i] = wp_exp2(bytestream2_get_le16(&gb));
1267
                }
1268
8279
            got_entropy = 1;
1269
8279
            break;
1270
7458
        case WP_ID_HYBRID:
1271
7458
            if (s->hybrid_bitrate) {
1272
21982
                for (i = 0; i <= s->stereo_in; i++) {
1273
14524
                    s->ch[i].slow_level = wp_exp2(bytestream2_get_le16(&gb));
1274
14524
                    size               -= 2;
1275
                }
1276
            }
1277
21982
            for (i = 0; i < (s->stereo_in + 1); i++) {
1278
14524
                s->ch[i].bitrate_acc = bytestream2_get_le16(&gb) << 16;
1279
14524
                size                -= 2;
1280
            }
1281
7458
            if (size > 0) {
1282
                for (i = 0; i < (s->stereo_in + 1); i++) {
1283
                    s->ch[i].bitrate_delta =
1284
                        wp_exp2((int16_t)bytestream2_get_le16(&gb));
1285
                }
1286
            } else {
1287
21982
                for (i = 0; i < (s->stereo_in + 1); i++)
1288
14524
                    s->ch[i].bitrate_delta = 0;
1289
            }
1290
7458
            got_hybrid = 1;
1291
7458
            break;
1292
168
        case WP_ID_INT32INFO: {
1293
            uint8_t val[4];
1294
168
            if (size != 4) {
1295
                av_log(avctx, AV_LOG_ERROR,
1296
                       "Invalid INT32INFO, size = %i\n",
1297
                       size);
1298
                bytestream2_skip(&gb, ssize - 4);
1299
                continue;
1300
            }
1301
168
            bytestream2_get_buffer(&gb, val, 4);
1302
168
            if (val[0] > 30) {
1303
                av_log(avctx, AV_LOG_ERROR,
1304
                       "Invalid INT32INFO, extra_bits = %d (> 30)\n", val[0]);
1305
                continue;
1306
168
            } else if (val[0]) {
1307
8
                s->extra_bits = val[0];
1308
160
            } else if (val[1]) {
1309
160
                s->shift = val[1];
1310
            } else if (val[2]) {
1311
                s->and   = s->or = 1;
1312
                s->shift = val[2];
1313
            } else if (val[3]) {
1314
                s->and   = 1;
1315
                s->shift = val[3];
1316
            }
1317
168
            if (s->shift > 31) {
1318
                av_log(avctx, AV_LOG_ERROR,
1319
                       "Invalid INT32INFO, shift = %d (> 31)\n", s->shift);
1320
                s->and = s->or = s->shift = 0;
1321
                continue;
1322
            }
1323
            /* original WavPack decoder forces 32-bit lossy sound to be treated
1324
             * as 24-bit one in order to have proper clipping */
1325


168
            if (s->hybrid && bpp == 4 && s->post_shift < 8 && s->shift > 8) {
1326
                s->post_shift      += 8;
1327
                s->shift           -= 8;
1328
                s->hybrid_maxclip >>= 8;
1329
                s->hybrid_minclip >>= 8;
1330
            }
1331
168
            break;
1332
        }
1333
67
        case WP_ID_FLOATINFO:
1334
67
            if (size != 4) {
1335
                av_log(avctx, AV_LOG_ERROR,
1336
                       "Invalid FLOATINFO, size = %i\n", size);
1337
                bytestream2_skip(&gb, ssize);
1338
                continue;
1339
            }
1340
67
            s->float_flag    = bytestream2_get_byte(&gb);
1341
67
            s->float_shift   = bytestream2_get_byte(&gb);
1342
67
            s->float_max_exp = bytestream2_get_byte(&gb);
1343
67
            if (s->float_shift > 31) {
1344
                av_log(avctx, AV_LOG_ERROR,
1345
                       "Invalid FLOATINFO, shift = %d (> 31)\n", s->float_shift);
1346
                s->float_shift = 0;
1347
                continue;
1348
            }
1349
67
            got_float        = 1;
1350
67
            bytestream2_skip(&gb, 1);
1351
67
            break;
1352
8279
        case WP_ID_DATA:
1353
8279
            if ((ret = init_get_bits8(&s->gb, gb.buffer, size)) < 0)
1354
                return ret;
1355
8279
            bytestream2_skip(&gb, size);
1356
8279
            got_pcm      = 1;
1357
8279
            break;
1358
        case WP_ID_DSD_DATA:
1359
            if (size < 2) {
1360
                av_log(avctx, AV_LOG_ERROR, "Invalid DSD_DATA, size = %i\n",
1361
                       size);
1362
                bytestream2_skip(&gb, ssize);
1363
                continue;
1364
            }
1365
            rate_x = bytestream2_get_byte(&gb);
1366
            if (rate_x > 30)
1367
                return AVERROR_INVALIDDATA;
1368
            rate_x = 1 << rate_x;
1369
            dsd_mode = bytestream2_get_byte(&gb);
1370
            if (dsd_mode && dsd_mode != 1 && dsd_mode != 3) {
1371
                av_log(avctx, AV_LOG_ERROR, "Invalid DSD encoding mode: %d\n",
1372
                    dsd_mode);
1373
                return AVERROR_INVALIDDATA;
1374
            }
1375
            bytestream2_init(&s->gbyte, gb.buffer, size-2);
1376
            bytestream2_skip(&gb, size-2);
1377
            got_dsd      = 1;
1378
            break;
1379
26
        case WP_ID_EXTRABITS:
1380
26
            if (size <= 4) {
1381
                av_log(avctx, AV_LOG_ERROR, "Invalid EXTRABITS, size = %i\n",
1382
                       size);
1383
                bytestream2_skip(&gb, size);
1384
                continue;
1385
            }
1386
26
            if ((ret = init_get_bits8(&s->gb_extra_bits, gb.buffer, size)) < 0)
1387
                return ret;
1388
26
            s->crc_extra_bits  = get_bits_long(&s->gb_extra_bits, 32);
1389
26
            bytestream2_skip(&gb, size);
1390
26
            s->got_extra_bits  = 1;
1391
26
            break;
1392
297
        case WP_ID_CHANINFO:
1393
297
            if (size <= 1) {
1394
                av_log(avctx, AV_LOG_ERROR,
1395
                       "Insufficient channel information\n");
1396
                return AVERROR_INVALIDDATA;
1397
            }
1398
297
            chan = bytestream2_get_byte(&gb);
1399

297
            switch (size - 2) {
1400
23
            case 0:
1401
23
                chmask = bytestream2_get_byte(&gb);
1402
23
                break;
1403
274
            case 1:
1404
274
                chmask = bytestream2_get_le16(&gb);
1405
274
                break;
1406
            case 2:
1407
                chmask = bytestream2_get_le24(&gb);
1408
                break;
1409
            case 3:
1410
                chmask = bytestream2_get_le32(&gb);
1411
                break;
1412
            case 4:
1413
                size = bytestream2_get_byte(&gb);
1414
                chan  |= (bytestream2_get_byte(&gb) & 0xF) << 8;
1415
                chan  += 1;
1416
                if (avctx->channels != chan)
1417
                    av_log(avctx, AV_LOG_WARNING, "%i channels signalled"
1418
                           " instead of %i.\n", chan, avctx->channels);
1419
                chmask = bytestream2_get_le24(&gb);
1420
                break;
1421
            case 5:
1422
                size = bytestream2_get_byte(&gb);
1423
                chan  |= (bytestream2_get_byte(&gb) & 0xF) << 8;
1424
                chan  += 1;
1425
                if (avctx->channels != chan)
1426
                    av_log(avctx, AV_LOG_WARNING, "%i channels signalled"
1427
                           " instead of %i.\n", chan, avctx->channels);
1428
                chmask = bytestream2_get_le32(&gb);
1429
                break;
1430
            default:
1431
                av_log(avctx, AV_LOG_ERROR, "Invalid channel info size %d\n",
1432
                       size);
1433
                chan   = avctx->channels;
1434
                chmask = avctx->channel_layout;
1435
            }
1436
297
            break;
1437
        case WP_ID_SAMPLE_RATE:
1438
            if (size != 3) {
1439
                av_log(avctx, AV_LOG_ERROR, "Invalid custom sample rate.\n");
1440
                return AVERROR_INVALIDDATA;
1441
            }
1442
            sample_rate = bytestream2_get_le24(&gb);
1443
            break;
1444
123
        default:
1445
123
            bytestream2_skip(&gb, size);
1446
        }
1447
49534
        if (id & WP_IDF_ODD)
1448
8738
            bytestream2_skip(&gb, 1);
1449
    }
1450
1451
8279
    if (got_pcm) {
1452
8279
        if (!got_terms) {
1453
            av_log(avctx, AV_LOG_ERROR, "No block with decorrelation terms\n");
1454
            return AVERROR_INVALIDDATA;
1455
        }
1456
8279
        if (!got_weights) {
1457
            av_log(avctx, AV_LOG_ERROR, "No block with decorrelation weights\n");
1458
            return AVERROR_INVALIDDATA;
1459
        }
1460
8279
        if (!got_samples) {
1461
            av_log(avctx, AV_LOG_ERROR, "No block with decorrelation samples\n");
1462
            return AVERROR_INVALIDDATA;
1463
        }
1464
8279
        if (!got_entropy) {
1465
            av_log(avctx, AV_LOG_ERROR, "No block with entropy info\n");
1466
            return AVERROR_INVALIDDATA;
1467
        }
1468

8279
        if (s->hybrid && !got_hybrid) {
1469
            av_log(avctx, AV_LOG_ERROR, "Hybrid config not found\n");
1470
            return AVERROR_INVALIDDATA;
1471
        }
1472

8279
        if (!got_float && sample_fmt == AV_SAMPLE_FMT_FLTP) {
1473
            av_log(avctx, AV_LOG_ERROR, "Float information not found\n");
1474
            return AVERROR_INVALIDDATA;
1475
        }
1476

8279
        if (s->got_extra_bits && sample_fmt != AV_SAMPLE_FMT_FLTP) {
1477
8
            const int size   = get_bits_left(&s->gb_extra_bits);
1478
8
            const int wanted = s->samples * s->extra_bits << s->stereo_in;
1479
8
            if (size < wanted) {
1480
                av_log(avctx, AV_LOG_ERROR, "Too small EXTRABITS\n");
1481
                s->got_extra_bits = 0;
1482
            }
1483
        }
1484
    }
1485
1486

8279
    if (!got_pcm && !got_dsd) {
1487
        av_log(avctx, AV_LOG_ERROR, "Packed samples not found\n");
1488
        return AVERROR_INVALIDDATA;
1489
    }
1490
1491

8279
    if ((got_pcm && wc->modulation != MODULATION_PCM) ||
1492
        (got_dsd && wc->modulation != MODULATION_DSD)) {
1493
            av_log(avctx, AV_LOG_ERROR, "Invalid PCM/DSD mix encountered\n");
1494
            return AVERROR_INVALIDDATA;
1495
    }
1496
1497
8279
    if (!wc->ch_offset) {
1498
7547
        int      new_channels = avctx->channels;
1499
7547
        uint64_t new_chmask   = avctx->channel_layout;
1500
        int new_samplerate;
1501
7547
        int sr = (s->frame_flags >> 23) & 0xf;
1502
7547
        if (sr == 0xf) {
1503
            if (!sample_rate) {
1504
                av_log(avctx, AV_LOG_ERROR, "Custom sample rate missing.\n");
1505
                return AVERROR_INVALIDDATA;
1506
            }
1507
            new_samplerate = sample_rate;
1508
        } else
1509
7547
            new_samplerate = wv_rates[sr];
1510
1511
7547
        if (new_samplerate * (uint64_t)rate_x > INT_MAX)
1512
            return AVERROR_INVALIDDATA;
1513
7547
        new_samplerate *= rate_x;
1514
1515
7547
        if (multiblock) {
1516
297
            if (chan)
1517
297
                new_channels = chan;
1518
297
            if (chmask)
1519
297
                new_chmask = chmask;
1520
        } else {
1521
7250
            new_channels = s->stereo ? 2 : 1;
1522
7250
            new_chmask   = s->stereo ? AV_CH_LAYOUT_STEREO :
1523
                                       AV_CH_LAYOUT_MONO;
1524
        }
1525
1526

15094
        if (new_chmask &&
1527
7547
            av_get_channel_layout_nb_channels(new_chmask) != new_channels) {
1528
            av_log(avctx, AV_LOG_ERROR, "Channel mask does not match the channel count\n");
1529
            return AVERROR_INVALIDDATA;
1530
        }
1531
1532
        /* clear DSD state if stream properties change */
1533
7547
        if (new_channels   != wc->dsd_channels      ||
1534
            new_chmask     != avctx->channel_layout ||
1535
            new_samplerate != avctx->sample_rate    ||
1536
            !!got_dsd      != !!wc->dsdctx) {
1537
7547
            ret = wv_dsd_reset(wc, got_dsd ? new_channels : 0);
1538
7547
            if (ret < 0) {
1539
                av_log(avctx, AV_LOG_ERROR, "Error reinitializing the DSD context\n");
1540
                return ret;
1541
            }
1542
7547
            ff_thread_release_buffer(avctx, &wc->curr_frame);
1543
        }
1544
7547
        avctx->channels            = new_channels;
1545
7547
        avctx->channel_layout      = new_chmask;
1546
7547
        avctx->sample_rate         = new_samplerate;
1547
7547
        avctx->sample_fmt          = sample_fmt;
1548
7547
        avctx->bits_per_raw_sample = orig_bpp;
1549
1550
7547
        ff_thread_release_buffer(avctx, &wc->prev_frame);
1551
7547
        FFSWAP(ThreadFrame, wc->curr_frame, wc->prev_frame);
1552
1553
        /* get output buffer */
1554
7547
        wc->curr_frame.f->nb_samples = s->samples;
1555
7547
        if ((ret = ff_thread_get_buffer(avctx, &wc->curr_frame, AV_GET_BUFFER_FLAG_REF)) < 0)
1556
            return ret;
1557
1558
7547
        wc->frame = wc->curr_frame.f;
1559
7547
        ff_thread_finish_setup(avctx);
1560
    }
1561
1562
8279
    if (wc->ch_offset + s->stereo >= avctx->channels) {
1563
        av_log(avctx, AV_LOG_WARNING, "Too many channels coded in a packet.\n");
1564
        return ((avctx->err_recognition & AV_EF_EXPLODE) || !wc->ch_offset) ? AVERROR_INVALIDDATA : 0;
1565
    }
1566
1567
8279
    samples_l = wc->frame->extended_data[wc->ch_offset];
1568
8279
    if (s->stereo)
1569
7632
        samples_r = wc->frame->extended_data[wc->ch_offset + 1];
1570
1571
8279
    wc->ch_offset += 1 + s->stereo;
1572
1573
8279
    if (s->stereo_in) {
1574
7590
        if (got_dsd) {
1575
            if (dsd_mode == 3) {
1576
                ret = wv_unpack_dsd_high(s, samples_l, samples_r);
1577
            } else if (dsd_mode == 1) {
1578
                ret = wv_unpack_dsd_fast(s, samples_l, samples_r);
1579
            } else {
1580
                ret = wv_unpack_dsd_copy(s, samples_l, samples_r);
1581
            }
1582
        } else {
1583
7590
            ret = wv_unpack_stereo(s, &s->gb, samples_l, samples_r, avctx->sample_fmt);
1584
        }
1585
7590
        if (ret < 0)
1586
1
            return ret;
1587
    } else {
1588
689
        if (got_dsd) {
1589
            if (dsd_mode == 3) {
1590
                ret = wv_unpack_dsd_high(s, samples_l, NULL);
1591
            } else if (dsd_mode == 1) {
1592
                ret = wv_unpack_dsd_fast(s, samples_l, NULL);
1593
            } else {
1594
                ret = wv_unpack_dsd_copy(s, samples_l, NULL);
1595
            }
1596
        } else {
1597
689
            ret = wv_unpack_mono(s, &s->gb, samples_l, avctx->sample_fmt);
1598
        }
1599
689
        if (ret < 0)
1600
            return ret;
1601
1602
689
        if (s->stereo)
1603
42
            memcpy(samples_r, samples_l, bpp * s->samples);
1604
    }
1605
1606
8278
    return 0;
1607
}
1608
1609
static void wavpack_decode_flush(AVCodecContext *avctx)
1610
{
1611
    WavpackContext *s = avctx->priv_data;
1612
1613
    wv_dsd_reset(s, 0);
1614
}
1615
1616
static int dsd_channel(AVCodecContext *avctx, void *frmptr, int jobnr, int threadnr)
1617
{
1618
    WavpackContext *s  = avctx->priv_data;
1619
    AVFrame *frame = frmptr;
1620
1621
    ff_dsd2pcm_translate (&s->dsdctx [jobnr], s->samples, 0,
1622
        (uint8_t *)frame->extended_data[jobnr], 4,
1623
        (float *)frame->extended_data[jobnr], 1);
1624
1625
    return 0;
1626
}
1627
1628
7547
static int wavpack_decode_frame(AVCodecContext *avctx, void *data,
1629
                                int *got_frame_ptr, AVPacket *avpkt)
1630
{
1631
7547
    WavpackContext *s  = avctx->priv_data;
1632
7547
    const uint8_t *buf = avpkt->data;
1633
7547
    int buf_size       = avpkt->size;
1634
    int frame_size, ret, frame_flags;
1635
1636
7547
    if (avpkt->size <= WV_HEADER_SIZE)
1637
        return AVERROR_INVALIDDATA;
1638
1639
7547
    s->frame     = NULL;
1640
7547
    s->block     = 0;
1641
7547
    s->ch_offset = 0;
1642
1643
    /* determine number of samples */
1644
7547
    s->samples  = AV_RL32(buf + 20);
1645
7547
    frame_flags = AV_RL32(buf + 24);
1646

7547
    if (s->samples <= 0 || s->samples > WV_MAX_SAMPLES) {
1647
        av_log(avctx, AV_LOG_ERROR, "Invalid number of samples: %d\n",
1648
               s->samples);
1649
        return AVERROR_INVALIDDATA;
1650
    }
1651
1652
7547
    s->modulation = (frame_flags & WV_DSD_DATA) ? MODULATION_DSD : MODULATION_PCM;
1653
1654
15825
    while (buf_size > WV_HEADER_SIZE) {
1655
8279
        frame_size = AV_RL32(buf + 4) - 12;
1656
8279
        buf       += 20;
1657
8279
        buf_size  -= 20;
1658

8279
        if (frame_size <= 0 || frame_size > buf_size) {
1659
            av_log(avctx, AV_LOG_ERROR,
1660
                   "Block %d has invalid size (size %d vs. %d bytes left)\n",
1661
                   s->block, frame_size, buf_size);
1662
            ret = AVERROR_INVALIDDATA;
1663
            goto error;
1664
        }
1665
8279
        if ((ret = wavpack_decode_block(avctx, s->block, buf, frame_size)) < 0)
1666
1
            goto error;
1667
8278
        s->block++;
1668
8278
        buf      += frame_size;
1669
8278
        buf_size -= frame_size;
1670
    }
1671
1672
7546
    if (s->ch_offset != avctx->channels) {
1673
        av_log(avctx, AV_LOG_ERROR, "Not enough channels coded in a packet.\n");
1674
        ret = AVERROR_INVALIDDATA;
1675
        goto error;
1676
    }
1677
1678
7546
    ff_thread_await_progress(&s->prev_frame, INT_MAX, 0);
1679
7546
    ff_thread_release_buffer(avctx, &s->prev_frame);
1680
1681
7546
    if (s->modulation == MODULATION_DSD)
1682
        avctx->execute2(avctx, dsd_channel, s->frame, NULL, avctx->channels);
1683
1684
7546
    ff_thread_report_progress(&s->curr_frame, INT_MAX, 0);
1685
1686
7546
    if ((ret = av_frame_ref(data, s->frame)) < 0)
1687
        return ret;
1688
1689
7546
    *got_frame_ptr = 1;
1690
1691
7546
    return avpkt->size;
1692
1693
1
error:
1694
1
    if (s->frame) {
1695
1
        ff_thread_await_progress(&s->prev_frame, INT_MAX, 0);
1696
1
        ff_thread_release_buffer(avctx, &s->prev_frame);
1697
1
        ff_thread_report_progress(&s->curr_frame, INT_MAX, 0);
1698
    }
1699
1700
1
    return ret;
1701
}
1702
1703
AVCodec ff_wavpack_decoder = {
1704
    .name           = "wavpack",
1705
    .long_name      = NULL_IF_CONFIG_SMALL("WavPack"),
1706
    .type           = AVMEDIA_TYPE_AUDIO,
1707
    .id             = AV_CODEC_ID_WAVPACK,
1708
    .priv_data_size = sizeof(WavpackContext),
1709
    .init           = wavpack_decode_init,
1710
    .close          = wavpack_decode_end,
1711
    .decode         = wavpack_decode_frame,
1712
    .flush          = wavpack_decode_flush,
1713
    .update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context),
1714
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
1715
                      AV_CODEC_CAP_SLICE_THREADS,
1716
    .caps_internal  = FF_CODEC_CAP_ALLOCATE_PROGRESS,
1717
};