GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/dnxhddec.c Lines: 312 389 80.2 %
Date: 2020-07-11 02:49:52 Branches: 156 217 71.9 %

Line Branch Exec Source
1
/*
2
 * VC3/DNxHD decoder.
3
 * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4
 * Copyright (c) 2011 MirriAd Ltd
5
 * Copyright (c) 2015 Christophe Gisquet
6
 *
7
 * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>
8
 * Slice multithreading and MB interlaced support added by Christophe Gisquet
9
 *
10
 * This file is part of FFmpeg.
11
 *
12
 * FFmpeg is free software; you can redistribute it and/or
13
 * modify it under the terms of the GNU Lesser General Public
14
 * License as published by the Free Software Foundation; either
15
 * version 2.1 of the License, or (at your option) any later version.
16
 *
17
 * FFmpeg is distributed in the hope that it will be useful,
18
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20
 * Lesser General Public License for more details.
21
 *
22
 * You should have received a copy of the GNU Lesser General Public
23
 * License along with FFmpeg; if not, write to the Free Software
24
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25
 */
26
27
#include "libavutil/imgutils.h"
28
#include "avcodec.h"
29
#include "blockdsp.h"
30
#define  UNCHECKED_BITSTREAM_READER 1
31
#include "get_bits.h"
32
#include "dnxhddata.h"
33
#include "idctdsp.h"
34
#include "internal.h"
35
#include "profiles.h"
36
#include "thread.h"
37
38
typedef struct RowContext {
39
    DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
40
    int luma_scale[64];
41
    int chroma_scale[64];
42
    GetBitContext gb;
43
    int last_dc[3];
44
    int last_qscale;
45
    int errors;
46
    /** -1:not set yet  0:off=RGB  1:on=YUV  2:variable */
47
    int format;
48
} RowContext;
49
50
typedef struct DNXHDContext {
51
    AVCodecContext *avctx;
52
    RowContext *rows;
53
    BlockDSPContext bdsp;
54
    const uint8_t* buf;
55
    int buf_size;
56
    int64_t cid;                        ///< compression id
57
    unsigned int width, height;
58
    enum AVPixelFormat pix_fmt;
59
    unsigned int mb_width, mb_height;
60
    uint32_t mb_scan_index[512];
61
    int data_offset;                    // End of mb_scan_index, where macroblocks start
62
    int cur_field;                      ///< current interlaced field
63
    VLC ac_vlc, dc_vlc, run_vlc;
64
    IDCTDSPContext idsp;
65
    ScanTable scantable;
66
    const CIDEntry *cid_table;
67
    int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
68
    int is_444;
69
    int alpha;
70
    int lla;
71
    int mbaff;
72
    int act;
73
    int (*decode_dct_block)(const struct DNXHDContext *ctx,
74
                            RowContext *row, int n);
75
} DNXHDContext;
76
77
#define DNXHD_VLC_BITS 9
78
#define DNXHD_DC_VLC_BITS 7
79
80
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
81
                                    RowContext *row, int n);
82
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
83
                                     RowContext *row, int n);
84
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
85
                                         RowContext *row, int n);
86
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
87
                                     RowContext *row, int n);
88
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
89
                                         RowContext *row, int n);
90
91
149
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
92
{
93
149
    DNXHDContext *ctx = avctx->priv_data;
94
95
149
    ctx->avctx = avctx;
96
149
    ctx->cid = -1;
97
149
    if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
98
77
        avctx->colorspace = AVCOL_SPC_BT709;
99
    }
100
101
149
    avctx->coded_width  = FFALIGN(avctx->width,  16);
102
149
    avctx->coded_height = FFALIGN(avctx->height, 16);
103
104
149
    ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
105
149
    if (!ctx->rows)
106
        return AVERROR(ENOMEM);
107
108
149
    return 0;
109
}
110
111
502
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
112
{
113
502
    if (cid != ctx->cid) {
114
        int index;
115
116
148
        if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
117
            av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
118
            return AVERROR(ENOSYS);
119
        }
120
148
        if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
121
4
            ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
122
            av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
123
            return AVERROR_INVALIDDATA;
124
        }
125
148
        ctx->cid_table = &ff_dnxhd_cid_table[index];
126
148
        av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
127
128
148
        ff_free_vlc(&ctx->ac_vlc);
129
148
        ff_free_vlc(&ctx->dc_vlc);
130
148
        ff_free_vlc(&ctx->run_vlc);
131
132
148
        init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
133
                 ctx->cid_table->ac_bits, 1, 1,
134
                 ctx->cid_table->ac_codes, 2, 2, 0);
135
148
        init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
136
                 ctx->cid_table->dc_bits, 1, 1,
137
                 ctx->cid_table->dc_codes, 1, 1, 0);
138
148
        init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
139
                 ctx->cid_table->run_bits, 1, 1,
140
                 ctx->cid_table->run_codes, 2, 2, 0);
141
142
148
        ctx->cid = cid;
143
    }
144
502
    return 0;
145
}
146
147
502
static int dnxhd_get_profile(int cid)
148
{
149

502
    switch(cid) {
150
2
    case 1270:
151
2
        return FF_PROFILE_DNXHR_444;
152
2
    case 1271:
153
2
        return FF_PROFILE_DNXHR_HQX;
154
120
    case 1272:
155
120
        return FF_PROFILE_DNXHR_HQ;
156
48
    case 1273:
157
48
        return FF_PROFILE_DNXHR_SQ;
158
111
    case 1274:
159
111
        return FF_PROFILE_DNXHR_LB;
160
    }
161
219
    return FF_PROFILE_DNXHD;
162
}
163
164
502
static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
165
                               const uint8_t *buf, int buf_size,
166
                               int first_field)
167
{
168
    int i, cid, ret;
169
502
    int old_bit_depth = ctx->bit_depth, bitdepth;
170
    uint64_t header_prefix;
171
502
    if (buf_size < 0x280) {
172
        av_log(ctx->avctx, AV_LOG_ERROR,
173
               "buffer too small (%d < 640).\n", buf_size);
174
        return AVERROR_INVALIDDATA;
175
    }
176
177
502
    header_prefix = ff_dnxhd_parse_header_prefix(buf);
178
502
    if (header_prefix == 0) {
179
        av_log(ctx->avctx, AV_LOG_ERROR,
180
               "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
181
               buf[0], buf[1], buf[2], buf[3], buf[4]);
182
        return AVERROR_INVALIDDATA;
183
    }
184
502
    if (buf[5] & 2) { /* interlaced */
185
134
        ctx->cur_field = buf[5] & 1;
186
134
        frame->interlaced_frame = 1;
187
134
        frame->top_field_first  = first_field ^ ctx->cur_field;
188
134
        av_log(ctx->avctx, AV_LOG_DEBUG,
189
134
               "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
190
    } else {
191
368
        ctx->cur_field = 0;
192
    }
193
502
    ctx->mbaff = (buf[0x6] >> 5) & 1;
194
502
    ctx->alpha = buf[0x7] & 1;
195
502
    ctx->lla   = (buf[0x7] >> 1) & 1;
196
502
    if (ctx->alpha)
197
        avpriv_request_sample(ctx->avctx, "alpha");
198
199
502
    ctx->height = AV_RB16(buf + 0x18);
200
502
    ctx->width  = AV_RB16(buf + 0x1a);
201
202

502
    switch(buf[0x21] >> 5) {
203
432
    case 1: bitdepth = 8; break;
204
68
    case 2: bitdepth = 10; break;
205
2
    case 3: bitdepth = 12; break;
206
    default:
207
        av_log(ctx->avctx, AV_LOG_ERROR,
208
               "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
209
        return AVERROR_INVALIDDATA;
210
    }
211
212
502
    cid = AV_RB32(buf + 0x28);
213
214
502
    ctx->avctx->profile = dnxhd_get_profile(cid);
215
216
502
    if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
217
        return ret;
218

502
    if (ctx->mbaff && ctx->cid_table->cid != 1260)
219
        av_log(ctx->avctx, AV_LOG_WARNING,
220
               "Adaptive MB interlace flag in an unsupported profile.\n");
221
222

502
    switch ((buf[0x2C] >> 1) & 3) {
223
502
    case 0: frame->colorspace = AVCOL_SPC_BT709;       break;
224
    case 1: frame->colorspace = AVCOL_SPC_BT2020_NCL;  break;
225
    case 2: frame->colorspace = AVCOL_SPC_BT2020_CL;   break;
226
    case 3: frame->colorspace = AVCOL_SPC_UNSPECIFIED; break;
227
    }
228
229
502
    ctx->act = buf[0x2C] & 1;
230

502
    if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
231
        av_log(ctx->avctx, AV_LOG_WARNING,
232
               "Adaptive color transform in an unsupported profile.\n");
233
234
502
    ctx->is_444 = (buf[0x2C] >> 6) & 1;
235
502
    if (ctx->is_444) {
236
2
        if (bitdepth == 8) {
237
            avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
238
            return AVERROR_INVALIDDATA;
239
2
        } else if (bitdepth == 10) {
240
2
            ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
241
2
            ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
242
2
                                    : AV_PIX_FMT_GBRP10;
243
        } else {
244
            ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
245
            ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
246
                                    : AV_PIX_FMT_GBRP12;
247
        }
248
500
    } else if (bitdepth == 12) {
249
2
        ctx->decode_dct_block = dnxhd_decode_dct_block_12;
250
2
        ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
251
498
    } else if (bitdepth == 10) {
252
66
        if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
253
            ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
254
        else
255
66
            ctx->decode_dct_block = dnxhd_decode_dct_block_10;
256
66
        ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
257
    } else {
258
432
        ctx->decode_dct_block = dnxhd_decode_dct_block_8;
259
432
        ctx->pix_fmt = AV_PIX_FMT_YUV422P;
260
    }
261
262
502
    ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
263
502
    if (ctx->bit_depth != old_bit_depth) {
264
148
        ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
265
148
        ff_idctdsp_init(&ctx->idsp, ctx->avctx);
266
148
        ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
267
                          ff_zigzag_direct);
268
    }
269
270
    // make sure profile size constraints are respected
271
    // DNx100 allows 1920->1440 and 1280->960 subsampling
272
502
    if (ctx->width != ctx->cid_table->width &&
273
285
        ctx->cid_table->width != DNXHD_VARIABLE) {
274
2
        av_reduce(&ctx->avctx->sample_aspect_ratio.num,
275
2
                  &ctx->avctx->sample_aspect_ratio.den,
276
2
                  ctx->width, ctx->cid_table->width, 255);
277
2
        ctx->width = ctx->cid_table->width;
278
    }
279
280
502
    if (buf_size < ctx->cid_table->coding_unit_size) {
281
        av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
282
               buf_size, ctx->cid_table->coding_unit_size);
283
        return AVERROR_INVALIDDATA;
284
    }
285
286
502
    ctx->mb_width  = (ctx->width + 15)>> 4;
287
502
    ctx->mb_height = AV_RB16(buf + 0x16c);
288
289

502
    if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
290
134
        ctx->height <<= 1;
291
292
502
    av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
293
502
           ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
294
           ctx->bit_depth, ctx->mbaff, ctx->act);
295
296
    // Newer format supports variable mb_scan_index sizes
297

502
    if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
298
108
        ctx->data_offset = 0x170 + (ctx->mb_height << 2);
299
    } else {
300
394
        if (ctx->mb_height > 68) {
301
            av_log(ctx->avctx, AV_LOG_ERROR,
302
                   "mb height too big: %d\n", ctx->mb_height);
303
            return AVERROR_INVALIDDATA;
304
        }
305
394
        ctx->data_offset = 0x280;
306
    }
307
502
    if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
308
        av_log(ctx->avctx, AV_LOG_ERROR,
309
                "mb height too big: %d\n", ctx->mb_height);
310
        return AVERROR_INVALIDDATA;
311
    }
312
313
502
    if (buf_size < ctx->data_offset) {
314
        av_log(ctx->avctx, AV_LOG_ERROR,
315
               "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
316
        return AVERROR_INVALIDDATA;
317
    }
318
319
502
    if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
320
        av_log(ctx->avctx, AV_LOG_ERROR,
321
               "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
322
        return AVERROR_INVALIDDATA;
323
    }
324
325
30675
    for (i = 0; i < ctx->mb_height; i++) {
326
30173
        ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
327
        ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
328
                i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
329
30173
        if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
330
            av_log(ctx->avctx, AV_LOG_ERROR,
331
                   "invalid mb scan index (%"PRIu32" vs %u).\n",
332
                   ctx->mb_scan_index[i], buf_size - ctx->data_offset);
333
            return AVERROR_INVALIDDATA;
334
        }
335
    }
336
337
502
    return 0;
338
}
339
340
34743936
static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
341
                                                   RowContext *row,
342
                                                   int n,
343
                                                   int index_bits,
344
                                                   int level_bias,
345
                                                   int level_shift,
346
                                                   int dc_shift)
347
{
348
    int i, j, index1, index2, len, flags;
349
    int level, component, sign;
350
    const int *scale;
351
    const uint8_t *weight_matrix;
352
34743936
    const uint8_t *ac_info = ctx->cid_table->ac_info;
353
34743936
    int16_t *block = row->blocks[n];
354
34743936
    const int eob_index     = ctx->cid_table->eob_index;
355
34743936
    int ret = 0;
356
34743936
    OPEN_READER(bs, &row->gb);
357
358
34743936
    ctx->bdsp.clear_block(block);
359
360
34743936
    if (!ctx->is_444) {
361
34591296
        if (n & 2) {
362
17295648
            component     = 1 + (n & 1);
363
17295648
            scale = row->chroma_scale;
364
17295648
            weight_matrix = ctx->cid_table->chroma_weight;
365
        } else {
366
17295648
            component     = 0;
367
17295648
            scale = row->luma_scale;
368
17295648
            weight_matrix = ctx->cid_table->luma_weight;
369
        }
370
    } else {
371
152640
        component = (n >> 1) % 3;
372
152640
        if (component) {
373
101760
            scale = row->chroma_scale;
374
101760
            weight_matrix = ctx->cid_table->chroma_weight;
375
        } else {
376
50880
            scale = row->luma_scale;
377
50880
            weight_matrix = ctx->cid_table->luma_weight;
378
        }
379
    }
380
381
34743936
    UPDATE_CACHE(bs, &row->gb);
382
34743936
    GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
383
34743936
    if (len < 0) {
384
        ret = len;
385
        goto error;
386
    }
387
34743936
    if (len) {
388
32365764
        level = GET_CACHE(bs, &row->gb);
389
32365764
        LAST_SKIP_BITS(bs, &row->gb, len);
390
32365764
        sign  = ~level >> 31;
391
32365764
        level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
392
32365764
        row->last_dc[component] += level * (1 << dc_shift);
393
    }
394
34743936
    block[0] = row->last_dc[component];
395
396
34743936
    i = 0;
397
398
34743936
    UPDATE_CACHE(bs, &row->gb);
399
34743936
    GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
400
            DNXHD_VLC_BITS, 2);
401
402
176938926
    while (index1 != eob_index) {
403
142194990
        level = ac_info[2*index1+0];
404
142194990
        flags = ac_info[2*index1+1];
405
406
142194990
        sign = SHOW_SBITS(bs, &row->gb, 1);
407
142194990
        SKIP_BITS(bs, &row->gb, 1);
408
409
142194990
        if (flags & 1) {
410
2609257
            level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
411
2609257
            SKIP_BITS(bs, &row->gb, index_bits);
412
        }
413
414
142194990
        if (flags & 2) {
415
46521250
            UPDATE_CACHE(bs, &row->gb);
416
46521250
            GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
417
                    DNXHD_VLC_BITS, 2);
418
46521250
            i += ctx->cid_table->run[index2];
419
        }
420
421
142194990
        if (++i > 63) {
422
            av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
423
            ret = -1;
424
            break;
425
        }
426
427
142194990
        j     = ctx->scantable.permutated[i];
428
142194990
        level *= scale[i];
429
142194990
        level += scale[i] >> 1;
430

142194990
        if (level_bias < 32 || weight_matrix[i] != level_bias)
431
117255903
            level += level_bias; // 1<<(level_shift-1)
432
142194990
        level >>= level_shift;
433
434
142194990
        block[j] = (level ^ sign) - sign;
435
436
142194990
        UPDATE_CACHE(bs, &row->gb);
437
142194990
        GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
438
                DNXHD_VLC_BITS, 2);
439
    }
440
34743936
error:
441
34743936
    CLOSE_READER(bs, &row->gb);
442
34743936
    return ret;
443
}
444
445
32375616
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
446
                                    RowContext *row, int n)
447
{
448
32375616
    return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
449
}
450
451
2085120
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
452
                                     RowContext *row, int n)
453
{
454
2085120
    return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
455
}
456
457
152640
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
458
                                         RowContext *row, int n)
459
{
460
152640
    return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
461
}
462
463
130560
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
464
                                     RowContext *row, int n)
465
{
466
130560
    return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
467
}
468
469
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
470
                                         RowContext *row, int n)
471
{
472
    return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
473
}
474
475
4336632
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
476
                                   AVFrame *frame, int x, int y)
477
{
478
4336632
    int shift1 = ctx->bit_depth >= 10;
479
4336632
    int dct_linesize_luma   = frame->linesize[0];
480
4336632
    int dct_linesize_chroma = frame->linesize[1];
481
    uint8_t *dest_y, *dest_u, *dest_v;
482
    int dct_y_offset, dct_x_offset;
483
    int qscale, i, act;
484
4336632
    int interlaced_mb = 0;
485
486
4336632
    if (ctx->mbaff) {
487
12240
        interlaced_mb = get_bits1(&row->gb);
488
12240
        qscale = get_bits(&row->gb, 10);
489
    } else {
490
4324392
        qscale = get_bits(&row->gb, 11);
491
    }
492
4336632
    act = get_bits1(&row->gb);
493
4336632
    if (act) {
494
12720
        if (!ctx->act) {
495
            static int act_warned;
496
            if (!act_warned) {
497
                act_warned = 1;
498
                av_log(ctx->avctx, AV_LOG_ERROR,
499
                       "ACT flag set, in violation of frame header.\n");
500
            }
501
12720
        } else if (row->format == -1) {
502
2
            row->format = act;
503
12718
        } else if (row->format != act) {
504
            row->format = 2; // Variable
505
        }
506
    }
507
508
4336632
    if (qscale != row->last_qscale) {
509
23037300
        for (i = 0; i < 64; i++) {
510
22682880
            row->luma_scale[i]   = qscale * ctx->cid_table->luma_weight[i];
511
22682880
            row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
512
        }
513
354420
        row->last_qscale = qscale;
514
    }
515
516
39080568
    for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
517
34743936
        if (ctx->decode_dct_block(ctx, row, i) < 0)
518
            return AVERROR_INVALIDDATA;
519
    }
520
521
4336632
    if (frame->interlaced_frame) {
522
546720
        dct_linesize_luma   <<= 1;
523
546720
        dct_linesize_chroma <<= 1;
524
    }
525
526
4336632
    dest_y = frame->data[0] + ((y * dct_linesize_luma)   << 4) + (x << (4 + shift1));
527
4336632
    dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
528
4336632
    dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
529
530

4336632
    if (frame->interlaced_frame && ctx->cur_field) {
531
273360
        dest_y += frame->linesize[0];
532
273360
        dest_u += frame->linesize[1];
533
273360
        dest_v += frame->linesize[2];
534
    }
535
4336632
    if (interlaced_mb) {
536
3224
        dct_linesize_luma   <<= 1;
537
3224
        dct_linesize_chroma <<= 1;
538
    }
539
540
4336632
    dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
541
4336632
    dct_x_offset = 8 << shift1;
542
4336632
    if (!ctx->is_444) {
543
4323912
        ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
544
4323912
        ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
545
4323912
        ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[4]);
546
4323912
        ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
547
548
4323912
        if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
549
4323912
            dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
550
4323912
            ctx->idsp.idct_put(dest_u,                dct_linesize_chroma, row->blocks[2]);
551
4323912
            ctx->idsp.idct_put(dest_v,                dct_linesize_chroma, row->blocks[3]);
552
4323912
            ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
553
4323912
            ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
554
        }
555
    } else {
556
12720
        ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
557
12720
        ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
558
12720
        ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[6]);
559
12720
        ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
560
561
12720
        if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
562
12720
            dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
563
12720
            ctx->idsp.idct_put(dest_u,                               dct_linesize_chroma, row->blocks[2]);
564
12720
            ctx->idsp.idct_put(dest_u + dct_x_offset,                dct_linesize_chroma, row->blocks[3]);
565
12720
            ctx->idsp.idct_put(dest_u + dct_y_offset,                dct_linesize_chroma, row->blocks[8]);
566
12720
            ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
567
12720
            ctx->idsp.idct_put(dest_v,                               dct_linesize_chroma, row->blocks[4]);
568
12720
            ctx->idsp.idct_put(dest_v + dct_x_offset,                dct_linesize_chroma, row->blocks[5]);
569
12720
            ctx->idsp.idct_put(dest_v + dct_y_offset,                dct_linesize_chroma, row->blocks[10]);
570
12720
            ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
571
        }
572
    }
573
574
4336632
    return 0;
575
}
576
577
30173
static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
578
                            int rownb, int threadnb)
579
{
580
30173
    const DNXHDContext *ctx = avctx->priv_data;
581
30173
    uint32_t offset = ctx->mb_scan_index[rownb];
582
30173
    RowContext *row = ctx->rows + threadnb;
583
    int x, ret;
584
585
30173
    row->last_dc[0] =
586
30173
    row->last_dc[1] =
587
30173
    row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
588
30173
    ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
589
30173
    if (ret < 0) {
590
        row->errors++;
591
        return ret;
592
    }
593
4366805
    for (x = 0; x < ctx->mb_width; x++) {
594
4336632
        int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
595
4336632
        if (ret < 0) {
596
            row->errors++;
597
            return ret;
598
        }
599
    }
600
601
30173
    return 0;
602
}
603
604
435
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
605
                              int *got_frame, AVPacket *avpkt)
606
{
607
435
    const uint8_t *buf = avpkt->data;
608
435
    int buf_size = avpkt->size;
609
435
    DNXHDContext *ctx = avctx->priv_data;
610
435
    ThreadFrame frame = { .f = data };
611
435
    AVFrame *picture = data;
612
435
    int first_field = 1;
613
    int ret, i;
614
615
    ff_dlog(avctx, "frame size %d\n", buf_size);
616
617
870
    for (i = 0; i < avctx->thread_count; i++)
618
435
        ctx->rows[i].format = -1;
619
620
435
decode_coding_unit:
621
502
    if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
622
        return ret;
623
624

502
    if ((avctx->width || avctx->height) &&
625

456
        (ctx->width != avctx->width || ctx->height != avctx->height)) {
626
2
        av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
627
               avctx->width, avctx->height, ctx->width, ctx->height);
628
2
        first_field = 1;
629
    }
630

502
    if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
631
        av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
632
               av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
633
        first_field = 1;
634
    }
635
636
502
    avctx->pix_fmt = ctx->pix_fmt;
637
502
    ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
638
502
    if (ret < 0)
639
        return ret;
640
641
502
    if (first_field) {
642
435
        if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
643
            return ret;
644
435
        picture->pict_type = AV_PICTURE_TYPE_I;
645
435
        picture->key_frame = 1;
646
    }
647
648
502
    ctx->buf_size = buf_size - ctx->data_offset;
649
502
    ctx->buf = buf + ctx->data_offset;
650
502
    avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
651
652

502
    if (first_field && picture->interlaced_frame) {
653
67
        buf      += ctx->cid_table->coding_unit_size;
654
67
        buf_size -= ctx->cid_table->coding_unit_size;
655
67
        first_field = 0;
656
67
        goto decode_coding_unit;
657
    }
658
659
435
    ret = 0;
660
870
    for (i = 0; i < avctx->thread_count; i++) {
661
435
        ret += ctx->rows[i].errors;
662
435
        ctx->rows[i].errors = 0;
663
    }
664
665
435
    if (ctx->act) {
666
        static int act_warned;
667
2
        int format = ctx->rows[0].format;
668
2
        for (i = 1; i < avctx->thread_count; i++) {
669
            if (ctx->rows[i].format != format &&
670
                ctx->rows[i].format != -1 /* not run */) {
671
                format = 2;
672
                break;
673
            }
674
        }
675

2
        switch (format) {
676
        case -1:
677
        case 2:
678
            if (!act_warned) {
679
                act_warned = 1;
680
                av_log(ctx->avctx, AV_LOG_ERROR,
681
                       "Unsupported: variable ACT flag.\n");
682
            }
683
            break;
684
        case 0:
685
            ctx->pix_fmt = ctx->bit_depth==10
686
                         ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
687
            break;
688
2
        case 1:
689
4
            ctx->pix_fmt = ctx->bit_depth==10
690
2
                         ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
691
2
            break;
692
        }
693
433
    }
694
435
    avctx->pix_fmt = ctx->pix_fmt;
695
435
    if (ret) {
696
        av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
697
        return AVERROR_INVALIDDATA;
698
    }
699
700
435
    *got_frame = 1;
701
435
    return avpkt->size;
702
}
703
704
149
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
705
{
706
149
    DNXHDContext *ctx = avctx->priv_data;
707
708
149
    ff_free_vlc(&ctx->ac_vlc);
709
149
    ff_free_vlc(&ctx->dc_vlc);
710
149
    ff_free_vlc(&ctx->run_vlc);
711
712
149
    av_freep(&ctx->rows);
713
714
149
    return 0;
715
}
716
717
AVCodec ff_dnxhd_decoder = {
718
    .name           = "dnxhd",
719
    .long_name      = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
720
    .type           = AVMEDIA_TYPE_VIDEO,
721
    .id             = AV_CODEC_ID_DNXHD,
722
    .priv_data_size = sizeof(DNXHDContext),
723
    .init           = dnxhd_decode_init,
724
    .close          = dnxhd_decode_close,
725
    .decode         = dnxhd_decode_frame,
726
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
727
                      AV_CODEC_CAP_SLICE_THREADS,
728
    .profiles       = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
729
};