GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/dnxhddec.c Lines: 310 392 79.1 %
Date: 2019-11-22 03:34:36 Branches: 155 214 72.4 %

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 "libavutil/timer.h"
29
#include "avcodec.h"
30
#include "blockdsp.h"
31
#define  UNCHECKED_BITSTREAM_READER 1
32
#include "get_bits.h"
33
#include "dnxhddata.h"
34
#include "idctdsp.h"
35
#include "internal.h"
36
#include "profiles.h"
37
#include "thread.h"
38
39
typedef struct RowContext {
40
    DECLARE_ALIGNED(32, int16_t, blocks)[12][64];
41
    int luma_scale[64];
42
    int chroma_scale[64];
43
    GetBitContext gb;
44
    int last_dc[3];
45
    int last_qscale;
46
    int errors;
47
    /** -1:not set yet  0:off=RGB  1:on=YUV  2:variable */
48
    int format;
49
} RowContext;
50
51
typedef struct DNXHDContext {
52
    AVCodecContext *avctx;
53
    RowContext *rows;
54
    BlockDSPContext bdsp;
55
    const uint8_t* buf;
56
    int buf_size;
57
    int64_t cid;                        ///< compression id
58
    unsigned int width, height;
59
    enum AVPixelFormat pix_fmt;
60
    unsigned int mb_width, mb_height;
61
    uint32_t mb_scan_index[512];
62
    int data_offset;                    // End of mb_scan_index, where macroblocks start
63
    int cur_field;                      ///< current interlaced field
64
    VLC ac_vlc, dc_vlc, run_vlc;
65
    IDCTDSPContext idsp;
66
    ScanTable scantable;
67
    const CIDEntry *cid_table;
68
    int bit_depth; // 8, 10, 12 or 0 if not initialized at all.
69
    int is_444;
70
    int alpha;
71
    int lla;
72
    int mbaff;
73
    int act;
74
    int (*decode_dct_block)(const struct DNXHDContext *ctx,
75
                            RowContext *row, int n);
76
} DNXHDContext;
77
78
#define DNXHD_VLC_BITS 9
79
#define DNXHD_DC_VLC_BITS 7
80
81
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
82
                                    RowContext *row, int n);
83
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
84
                                     RowContext *row, int n);
85
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
86
                                         RowContext *row, int n);
87
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
88
                                     RowContext *row, int n);
89
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
90
                                         RowContext *row, int n);
91
92
149
static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
93
{
94
149
    DNXHDContext *ctx = avctx->priv_data;
95
96
149
    ctx->avctx = avctx;
97
149
    ctx->cid = -1;
98
149
    if (avctx->colorspace == AVCOL_SPC_UNSPECIFIED) {
99
73
        avctx->colorspace = AVCOL_SPC_BT709;
100
    }
101
102
149
    avctx->coded_width  = FFALIGN(avctx->width,  16);
103
149
    avctx->coded_height = FFALIGN(avctx->height, 16);
104
105
149
    ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
106
149
    if (!ctx->rows)
107
        return AVERROR(ENOMEM);
108
109
149
    return 0;
110
}
111
112
502
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
113
{
114
502
    if (cid != ctx->cid) {
115
        int index;
116
117
148
        if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
118
            av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
119
            return AVERROR(ENOSYS);
120
        }
121
148
        if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
122
4
            ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
123
            av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
124
            return AVERROR_INVALIDDATA;
125
        }
126
148
        ctx->cid_table = &ff_dnxhd_cid_table[index];
127
148
        av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
128
129
148
        ff_free_vlc(&ctx->ac_vlc);
130
148
        ff_free_vlc(&ctx->dc_vlc);
131
148
        ff_free_vlc(&ctx->run_vlc);
132
133
148
        init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
134
                 ctx->cid_table->ac_bits, 1, 1,
135
                 ctx->cid_table->ac_codes, 2, 2, 0);
136
148
        init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
137
                 ctx->cid_table->dc_bits, 1, 1,
138
                 ctx->cid_table->dc_codes, 1, 1, 0);
139
148
        init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
140
                 ctx->cid_table->run_bits, 1, 1,
141
                 ctx->cid_table->run_codes, 2, 2, 0);
142
143
148
        ctx->cid = cid;
144
    }
145
502
    return 0;
146
}
147
148
static av_cold int dnxhd_decode_init_thread_copy(AVCodecContext *avctx)
149
{
150
    DNXHDContext *ctx = avctx->priv_data;
151
152
    ctx->avctx = avctx;
153
    // make sure VLC tables will be loaded when cid is parsed
154
    ctx->cid = -1;
155
156
    ctx->rows = av_mallocz_array(avctx->thread_count, sizeof(RowContext));
157
    if (!ctx->rows)
158
        return AVERROR(ENOMEM);
159
160
    return 0;
161
}
162
163
502
static int dnxhd_get_profile(int cid)
164
{
165

502
    switch(cid) {
166
2
    case 1270:
167
2
        return FF_PROFILE_DNXHR_444;
168
2
    case 1271:
169
2
        return FF_PROFILE_DNXHR_HQX;
170
120
    case 1272:
171
120
        return FF_PROFILE_DNXHR_HQ;
172
48
    case 1273:
173
48
        return FF_PROFILE_DNXHR_SQ;
174
111
    case 1274:
175
111
        return FF_PROFILE_DNXHR_LB;
176
    }
177
219
    return FF_PROFILE_DNXHD;
178
}
179
180
502
static int dnxhd_decode_header(DNXHDContext *ctx, AVFrame *frame,
181
                               const uint8_t *buf, int buf_size,
182
                               int first_field)
183
{
184
    int i, cid, ret;
185
502
    int old_bit_depth = ctx->bit_depth, bitdepth;
186
    uint64_t header_prefix;
187
502
    if (buf_size < 0x280) {
188
        av_log(ctx->avctx, AV_LOG_ERROR,
189
               "buffer too small (%d < 640).\n", buf_size);
190
        return AVERROR_INVALIDDATA;
191
    }
192
193
502
    header_prefix = ff_dnxhd_parse_header_prefix(buf);
194
502
    if (header_prefix == 0) {
195
        av_log(ctx->avctx, AV_LOG_ERROR,
196
               "unknown header 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
197
               buf[0], buf[1], buf[2], buf[3], buf[4]);
198
        return AVERROR_INVALIDDATA;
199
    }
200
502
    if (buf[5] & 2) { /* interlaced */
201
134
        ctx->cur_field = buf[5] & 1;
202
134
        frame->interlaced_frame = 1;
203
134
        frame->top_field_first  = first_field ^ ctx->cur_field;
204
134
        av_log(ctx->avctx, AV_LOG_DEBUG,
205
134
               "interlaced %d, cur field %d\n", buf[5] & 3, ctx->cur_field);
206
    } else {
207
368
        ctx->cur_field = 0;
208
    }
209
502
    ctx->mbaff = (buf[0x6] >> 5) & 1;
210
502
    ctx->alpha = buf[0x7] & 1;
211
502
    ctx->lla   = (buf[0x7] >> 1) & 1;
212
502
    if (ctx->alpha)
213
        avpriv_request_sample(ctx->avctx, "alpha");
214
215
502
    ctx->height = AV_RB16(buf + 0x18);
216
502
    ctx->width  = AV_RB16(buf + 0x1a);
217
218

502
    switch(buf[0x21] >> 5) {
219
432
    case 1: bitdepth = 8; break;
220
68
    case 2: bitdepth = 10; break;
221
2
    case 3: bitdepth = 12; break;
222
    default:
223
        av_log(ctx->avctx, AV_LOG_ERROR,
224
               "Unknown bitdepth indicator (%d)\n", buf[0x21] >> 5);
225
        return AVERROR_INVALIDDATA;
226
    }
227
228
502
    cid = AV_RB32(buf + 0x28);
229
230
502
    ctx->avctx->profile = dnxhd_get_profile(cid);
231
232
502
    if ((ret = dnxhd_init_vlc(ctx, cid, bitdepth)) < 0)
233
        return ret;
234

502
    if (ctx->mbaff && ctx->cid_table->cid != 1260)
235
        av_log(ctx->avctx, AV_LOG_WARNING,
236
               "Adaptive MB interlace flag in an unsupported profile.\n");
237
238
502
    ctx->act = buf[0x2C] & 7;
239

502
    if (ctx->act && ctx->cid_table->cid != 1256 && ctx->cid_table->cid != 1270)
240
        av_log(ctx->avctx, AV_LOG_WARNING,
241
               "Adaptive color transform in an unsupported profile.\n");
242
243
502
    ctx->is_444 = (buf[0x2C] >> 6) & 1;
244
502
    if (ctx->is_444) {
245
2
        if (bitdepth == 8) {
246
            avpriv_request_sample(ctx->avctx, "4:4:4 8 bits");
247
            return AVERROR_INVALIDDATA;
248
2
        } else if (bitdepth == 10) {
249
2
            ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
250
2
            ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P10
251
2
                                    : AV_PIX_FMT_GBRP10;
252
        } else {
253
            ctx->decode_dct_block = dnxhd_decode_dct_block_12_444;
254
            ctx->pix_fmt = ctx->act ? AV_PIX_FMT_YUV444P12
255
                                    : AV_PIX_FMT_GBRP12;
256
        }
257
500
    } else if (bitdepth == 12) {
258
2
        ctx->decode_dct_block = dnxhd_decode_dct_block_12;
259
2
        ctx->pix_fmt = AV_PIX_FMT_YUV422P12;
260
498
    } else if (bitdepth == 10) {
261
66
        if (ctx->avctx->profile == FF_PROFILE_DNXHR_HQX)
262
            ctx->decode_dct_block = dnxhd_decode_dct_block_10_444;
263
        else
264
66
            ctx->decode_dct_block = dnxhd_decode_dct_block_10;
265
66
        ctx->pix_fmt = AV_PIX_FMT_YUV422P10;
266
    } else {
267
432
        ctx->decode_dct_block = dnxhd_decode_dct_block_8;
268
432
        ctx->pix_fmt = AV_PIX_FMT_YUV422P;
269
    }
270
271
502
    ctx->avctx->bits_per_raw_sample = ctx->bit_depth = bitdepth;
272
502
    if (ctx->bit_depth != old_bit_depth) {
273
148
        ff_blockdsp_init(&ctx->bdsp, ctx->avctx);
274
148
        ff_idctdsp_init(&ctx->idsp, ctx->avctx);
275
148
        ff_init_scantable(ctx->idsp.idct_permutation, &ctx->scantable,
276
                          ff_zigzag_direct);
277
    }
278
279
    // make sure profile size constraints are respected
280
    // DNx100 allows 1920->1440 and 1280->960 subsampling
281
502
    if (ctx->width != ctx->cid_table->width &&
282
285
        ctx->cid_table->width != DNXHD_VARIABLE) {
283
2
        av_reduce(&ctx->avctx->sample_aspect_ratio.num,
284
2
                  &ctx->avctx->sample_aspect_ratio.den,
285
2
                  ctx->width, ctx->cid_table->width, 255);
286
2
        ctx->width = ctx->cid_table->width;
287
    }
288
289
502
    if (buf_size < ctx->cid_table->coding_unit_size) {
290
        av_log(ctx->avctx, AV_LOG_ERROR, "incorrect frame size (%d < %u).\n",
291
               buf_size, ctx->cid_table->coding_unit_size);
292
        return AVERROR_INVALIDDATA;
293
    }
294
295
502
    ctx->mb_width  = (ctx->width + 15)>> 4;
296
502
    ctx->mb_height = AV_RB16(buf + 0x16c);
297
298

502
    if ((ctx->height + 15) >> 4 == ctx->mb_height && frame->interlaced_frame)
299
134
        ctx->height <<= 1;
300
301
502
    av_log(ctx->avctx, AV_LOG_VERBOSE, "%dx%d, 4:%s %d bits, MBAFF=%d ACT=%d\n",
302
502
           ctx->width, ctx->height, ctx->is_444 ? "4:4" : "2:2",
303
           ctx->bit_depth, ctx->mbaff, ctx->act);
304
305
    // Newer format supports variable mb_scan_index sizes
306

502
    if (ctx->mb_height > 68 && ff_dnxhd_check_header_prefix_hr(header_prefix)) {
307
108
        ctx->data_offset = 0x170 + (ctx->mb_height << 2);
308
    } else {
309
394
        if (ctx->mb_height > 68) {
310
            av_log(ctx->avctx, AV_LOG_ERROR,
311
                   "mb height too big: %d\n", ctx->mb_height);
312
            return AVERROR_INVALIDDATA;
313
        }
314
394
        ctx->data_offset = 0x280;
315
    }
316
502
    if ((ctx->mb_height << frame->interlaced_frame) > (ctx->height + 15) >> 4) {
317
        av_log(ctx->avctx, AV_LOG_ERROR,
318
                "mb height too big: %d\n", ctx->mb_height);
319
        return AVERROR_INVALIDDATA;
320
    }
321
322
502
    if (buf_size < ctx->data_offset) {
323
        av_log(ctx->avctx, AV_LOG_ERROR,
324
               "buffer too small (%d < %d).\n", buf_size, ctx->data_offset);
325
        return AVERROR_INVALIDDATA;
326
    }
327
328
502
    if (ctx->mb_height > FF_ARRAY_ELEMS(ctx->mb_scan_index)) {
329
        av_log(ctx->avctx, AV_LOG_ERROR,
330
               "mb_height too big (%d > %"SIZE_SPECIFIER").\n", ctx->mb_height, FF_ARRAY_ELEMS(ctx->mb_scan_index));
331
        return AVERROR_INVALIDDATA;
332
    }
333
334
30675
    for (i = 0; i < ctx->mb_height; i++) {
335
30173
        ctx->mb_scan_index[i] = AV_RB32(buf + 0x170 + (i << 2));
336
        ff_dlog(ctx->avctx, "mb scan index %d, pos %d: %"PRIu32"\n",
337
                i, 0x170 + (i << 2), ctx->mb_scan_index[i]);
338
30173
        if (buf_size - ctx->data_offset < ctx->mb_scan_index[i]) {
339
            av_log(ctx->avctx, AV_LOG_ERROR,
340
                   "invalid mb scan index (%"PRIu32" vs %u).\n",
341
                   ctx->mb_scan_index[i], buf_size - ctx->data_offset);
342
            return AVERROR_INVALIDDATA;
343
        }
344
    }
345
346
502
    return 0;
347
}
348
349
34743936
static av_always_inline int dnxhd_decode_dct_block(const DNXHDContext *ctx,
350
                                                   RowContext *row,
351
                                                   int n,
352
                                                   int index_bits,
353
                                                   int level_bias,
354
                                                   int level_shift,
355
                                                   int dc_shift)
356
{
357
    int i, j, index1, index2, len, flags;
358
    int level, component, sign;
359
    const int *scale;
360
    const uint8_t *weight_matrix;
361
34743936
    const uint8_t *ac_info = ctx->cid_table->ac_info;
362
34743936
    int16_t *block = row->blocks[n];
363
34743936
    const int eob_index     = ctx->cid_table->eob_index;
364
34743936
    int ret = 0;
365
34743936
    OPEN_READER(bs, &row->gb);
366
367
34743936
    ctx->bdsp.clear_block(block);
368
369
34743936
    if (!ctx->is_444) {
370
34591296
        if (n & 2) {
371
17295648
            component     = 1 + (n & 1);
372
17295648
            scale = row->chroma_scale;
373
17295648
            weight_matrix = ctx->cid_table->chroma_weight;
374
        } else {
375
17295648
            component     = 0;
376
17295648
            scale = row->luma_scale;
377
17295648
            weight_matrix = ctx->cid_table->luma_weight;
378
        }
379
    } else {
380
152640
        component = (n >> 1) % 3;
381
152640
        if (component) {
382
101760
            scale = row->chroma_scale;
383
101760
            weight_matrix = ctx->cid_table->chroma_weight;
384
        } else {
385
50880
            scale = row->luma_scale;
386
50880
            weight_matrix = ctx->cid_table->luma_weight;
387
        }
388
    }
389
390
34743936
    UPDATE_CACHE(bs, &row->gb);
391
34743936
    GET_VLC(len, bs, &row->gb, ctx->dc_vlc.table, DNXHD_DC_VLC_BITS, 1);
392
34743936
    if (len < 0) {
393
        ret = len;
394
        goto error;
395
    }
396
34743936
    if (len) {
397
32365764
        level = GET_CACHE(bs, &row->gb);
398
32365764
        LAST_SKIP_BITS(bs, &row->gb, len);
399
32365764
        sign  = ~level >> 31;
400
32365764
        level = (NEG_USR32(sign ^ level, len) ^ sign) - sign;
401
32365764
        row->last_dc[component] += level * (1 << dc_shift);
402
    }
403
34743936
    block[0] = row->last_dc[component];
404
405
34743936
    i = 0;
406
407
34743936
    UPDATE_CACHE(bs, &row->gb);
408
34743936
    GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
409
            DNXHD_VLC_BITS, 2);
410
411
176938926
    while (index1 != eob_index) {
412
142194990
        level = ac_info[2*index1+0];
413
142194990
        flags = ac_info[2*index1+1];
414
415
142194990
        sign = SHOW_SBITS(bs, &row->gb, 1);
416
142194990
        SKIP_BITS(bs, &row->gb, 1);
417
418
142194990
        if (flags & 1) {
419
2609257
            level += SHOW_UBITS(bs, &row->gb, index_bits) << 7;
420
2609257
            SKIP_BITS(bs, &row->gb, index_bits);
421
        }
422
423
142194990
        if (flags & 2) {
424
46521250
            UPDATE_CACHE(bs, &row->gb);
425
46521250
            GET_VLC(index2, bs, &row->gb, ctx->run_vlc.table,
426
                    DNXHD_VLC_BITS, 2);
427
46521250
            i += ctx->cid_table->run[index2];
428
        }
429
430
142194990
        if (++i > 63) {
431
            av_log(ctx->avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", n, i);
432
            ret = -1;
433
            break;
434
        }
435
436
142194990
        j     = ctx->scantable.permutated[i];
437
142194990
        level *= scale[i];
438
142194990
        level += scale[i] >> 1;
439

142194990
        if (level_bias < 32 || weight_matrix[i] != level_bias)
440
117255903
            level += level_bias; // 1<<(level_shift-1)
441
142194990
        level >>= level_shift;
442
443
142194990
        block[j] = (level ^ sign) - sign;
444
445
142194990
        UPDATE_CACHE(bs, &row->gb);
446
142194990
        GET_VLC(index1, bs, &row->gb, ctx->ac_vlc.table,
447
                DNXHD_VLC_BITS, 2);
448
    }
449
34743936
error:
450
34743936
    CLOSE_READER(bs, &row->gb);
451
34743936
    return ret;
452
}
453
454
32375616
static int dnxhd_decode_dct_block_8(const DNXHDContext *ctx,
455
                                    RowContext *row, int n)
456
{
457
32375616
    return dnxhd_decode_dct_block(ctx, row, n, 4, 32, 6, 0);
458
}
459
460
2085120
static int dnxhd_decode_dct_block_10(const DNXHDContext *ctx,
461
                                     RowContext *row, int n)
462
{
463
2085120
    return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 0);
464
}
465
466
152640
static int dnxhd_decode_dct_block_10_444(const DNXHDContext *ctx,
467
                                         RowContext *row, int n)
468
{
469
152640
    return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 6, 0);
470
}
471
472
130560
static int dnxhd_decode_dct_block_12(const DNXHDContext *ctx,
473
                                     RowContext *row, int n)
474
{
475
130560
    return dnxhd_decode_dct_block(ctx, row, n, 6, 8, 4, 2);
476
}
477
478
static int dnxhd_decode_dct_block_12_444(const DNXHDContext *ctx,
479
                                         RowContext *row, int n)
480
{
481
    return dnxhd_decode_dct_block(ctx, row, n, 6, 32, 4, 2);
482
}
483
484
4336632
static int dnxhd_decode_macroblock(const DNXHDContext *ctx, RowContext *row,
485
                                   AVFrame *frame, int x, int y)
486
{
487
4336632
    int shift1 = ctx->bit_depth >= 10;
488
4336632
    int dct_linesize_luma   = frame->linesize[0];
489
4336632
    int dct_linesize_chroma = frame->linesize[1];
490
    uint8_t *dest_y, *dest_u, *dest_v;
491
    int dct_y_offset, dct_x_offset;
492
    int qscale, i, act;
493
4336632
    int interlaced_mb = 0;
494
495
4336632
    if (ctx->mbaff) {
496
12240
        interlaced_mb = get_bits1(&row->gb);
497
12240
        qscale = get_bits(&row->gb, 10);
498
    } else {
499
4324392
        qscale = get_bits(&row->gb, 11);
500
    }
501
4336632
    act = get_bits1(&row->gb);
502
4336632
    if (act) {
503
12720
        if (!ctx->act) {
504
            static int act_warned;
505
            if (!act_warned) {
506
                act_warned = 1;
507
                av_log(ctx->avctx, AV_LOG_ERROR,
508
                       "ACT flag set, in violation of frame header.\n");
509
            }
510
12720
        } else if (row->format == -1) {
511
2
            row->format = act;
512
12718
        } else if (row->format != act) {
513
            row->format = 2; // Variable
514
        }
515
    }
516
517
4336632
    if (qscale != row->last_qscale) {
518
23037300
        for (i = 0; i < 64; i++) {
519
22682880
            row->luma_scale[i]   = qscale * ctx->cid_table->luma_weight[i];
520
22682880
            row->chroma_scale[i] = qscale * ctx->cid_table->chroma_weight[i];
521
        }
522
354420
        row->last_qscale = qscale;
523
    }
524
525
39080568
    for (i = 0; i < 8 + 4 * ctx->is_444; i++) {
526
34743936
        if (ctx->decode_dct_block(ctx, row, i) < 0)
527
            return AVERROR_INVALIDDATA;
528
    }
529
530
4336632
    if (frame->interlaced_frame) {
531
546720
        dct_linesize_luma   <<= 1;
532
546720
        dct_linesize_chroma <<= 1;
533
    }
534
535
4336632
    dest_y = frame->data[0] + ((y * dct_linesize_luma)   << 4) + (x << (4 + shift1));
536
4336632
    dest_u = frame->data[1] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
537
4336632
    dest_v = frame->data[2] + ((y * dct_linesize_chroma) << 4) + (x << (3 + shift1 + ctx->is_444));
538
539

4336632
    if (frame->interlaced_frame && ctx->cur_field) {
540
273360
        dest_y += frame->linesize[0];
541
273360
        dest_u += frame->linesize[1];
542
273360
        dest_v += frame->linesize[2];
543
    }
544
4336632
    if (interlaced_mb) {
545
3224
        dct_linesize_luma   <<= 1;
546
3224
        dct_linesize_chroma <<= 1;
547
    }
548
549
4336632
    dct_y_offset = interlaced_mb ? frame->linesize[0] : (dct_linesize_luma << 3);
550
4336632
    dct_x_offset = 8 << shift1;
551
4336632
    if (!ctx->is_444) {
552
4323912
        ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
553
4323912
        ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
554
4323912
        ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[4]);
555
4323912
        ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[5]);
556
557
4323912
        if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
558
4323912
            dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
559
4323912
            ctx->idsp.idct_put(dest_u,                dct_linesize_chroma, row->blocks[2]);
560
4323912
            ctx->idsp.idct_put(dest_v,                dct_linesize_chroma, row->blocks[3]);
561
4323912
            ctx->idsp.idct_put(dest_u + dct_y_offset, dct_linesize_chroma, row->blocks[6]);
562
4323912
            ctx->idsp.idct_put(dest_v + dct_y_offset, dct_linesize_chroma, row->blocks[7]);
563
        }
564
    } else {
565
12720
        ctx->idsp.idct_put(dest_y,                               dct_linesize_luma, row->blocks[0]);
566
12720
        ctx->idsp.idct_put(dest_y + dct_x_offset,                dct_linesize_luma, row->blocks[1]);
567
12720
        ctx->idsp.idct_put(dest_y + dct_y_offset,                dct_linesize_luma, row->blocks[6]);
568
12720
        ctx->idsp.idct_put(dest_y + dct_y_offset + dct_x_offset, dct_linesize_luma, row->blocks[7]);
569
570
12720
        if (!(ctx->avctx->flags & AV_CODEC_FLAG_GRAY)) {
571
12720
            dct_y_offset = interlaced_mb ? frame->linesize[1] : (dct_linesize_chroma << 3);
572
12720
            ctx->idsp.idct_put(dest_u,                               dct_linesize_chroma, row->blocks[2]);
573
12720
            ctx->idsp.idct_put(dest_u + dct_x_offset,                dct_linesize_chroma, row->blocks[3]);
574
12720
            ctx->idsp.idct_put(dest_u + dct_y_offset,                dct_linesize_chroma, row->blocks[8]);
575
12720
            ctx->idsp.idct_put(dest_u + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[9]);
576
12720
            ctx->idsp.idct_put(dest_v,                               dct_linesize_chroma, row->blocks[4]);
577
12720
            ctx->idsp.idct_put(dest_v + dct_x_offset,                dct_linesize_chroma, row->blocks[5]);
578
12720
            ctx->idsp.idct_put(dest_v + dct_y_offset,                dct_linesize_chroma, row->blocks[10]);
579
12720
            ctx->idsp.idct_put(dest_v + dct_y_offset + dct_x_offset, dct_linesize_chroma, row->blocks[11]);
580
        }
581
    }
582
583
4336632
    return 0;
584
}
585
586
30173
static int dnxhd_decode_row(AVCodecContext *avctx, void *data,
587
                            int rownb, int threadnb)
588
{
589
30173
    const DNXHDContext *ctx = avctx->priv_data;
590
30173
    uint32_t offset = ctx->mb_scan_index[rownb];
591
30173
    RowContext *row = ctx->rows + threadnb;
592
    int x, ret;
593
594
30173
    row->last_dc[0] =
595
30173
    row->last_dc[1] =
596
30173
    row->last_dc[2] = 1 << (ctx->bit_depth + 2); // for levels +2^(bitdepth-1)
597
30173
    ret = init_get_bits8(&row->gb, ctx->buf + offset, ctx->buf_size - offset);
598
30173
    if (ret < 0) {
599
        row->errors++;
600
        return ret;
601
    }
602
4366805
    for (x = 0; x < ctx->mb_width; x++) {
603
        //START_TIMER;
604
4336632
        int ret = dnxhd_decode_macroblock(ctx, row, data, x, rownb);
605
4336632
        if (ret < 0) {
606
            row->errors++;
607
            return ret;
608
        }
609
        //STOP_TIMER("decode macroblock");
610
    }
611
612
30173
    return 0;
613
}
614
615
435
static int dnxhd_decode_frame(AVCodecContext *avctx, void *data,
616
                              int *got_frame, AVPacket *avpkt)
617
{
618
435
    const uint8_t *buf = avpkt->data;
619
435
    int buf_size = avpkt->size;
620
435
    DNXHDContext *ctx = avctx->priv_data;
621
435
    ThreadFrame frame = { .f = data };
622
435
    AVFrame *picture = data;
623
435
    int first_field = 1;
624
    int ret, i;
625
626
    ff_dlog(avctx, "frame size %d\n", buf_size);
627
628
870
    for (i = 0; i < avctx->thread_count; i++)
629
435
        ctx->rows[i].format = -1;
630
631
435
decode_coding_unit:
632
502
    if ((ret = dnxhd_decode_header(ctx, picture, buf, buf_size, first_field)) < 0)
633
        return ret;
634
635

502
    if ((avctx->width || avctx->height) &&
636

456
        (ctx->width != avctx->width || ctx->height != avctx->height)) {
637
2
        av_log(avctx, AV_LOG_WARNING, "frame size changed: %dx%d -> %ux%u\n",
638
               avctx->width, avctx->height, ctx->width, ctx->height);
639
2
        first_field = 1;
640
    }
641

502
    if (avctx->pix_fmt != AV_PIX_FMT_NONE && avctx->pix_fmt != ctx->pix_fmt) {
642
        av_log(avctx, AV_LOG_WARNING, "pix_fmt changed: %s -> %s\n",
643
               av_get_pix_fmt_name(avctx->pix_fmt), av_get_pix_fmt_name(ctx->pix_fmt));
644
        first_field = 1;
645
    }
646
647
502
    avctx->pix_fmt = ctx->pix_fmt;
648
502
    ret = ff_set_dimensions(avctx, ctx->width, ctx->height);
649
502
    if (ret < 0)
650
        return ret;
651
652
502
    if (first_field) {
653
435
        if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
654
            return ret;
655
435
        picture->pict_type = AV_PICTURE_TYPE_I;
656
435
        picture->key_frame = 1;
657
    }
658
659
502
    ctx->buf_size = buf_size - ctx->data_offset;
660
502
    ctx->buf = buf + ctx->data_offset;
661
502
    avctx->execute2(avctx, dnxhd_decode_row, picture, NULL, ctx->mb_height);
662
663

502
    if (first_field && picture->interlaced_frame) {
664
67
        buf      += ctx->cid_table->coding_unit_size;
665
67
        buf_size -= ctx->cid_table->coding_unit_size;
666
67
        first_field = 0;
667
67
        goto decode_coding_unit;
668
    }
669
670
435
    ret = 0;
671
870
    for (i = 0; i < avctx->thread_count; i++) {
672
435
        ret += ctx->rows[i].errors;
673
435
        ctx->rows[i].errors = 0;
674
    }
675
676
435
    if (ctx->act) {
677
        static int act_warned;
678
2
        int format = ctx->rows[0].format;
679
2
        for (i = 1; i < avctx->thread_count; i++) {
680
            if (ctx->rows[i].format != format &&
681
                ctx->rows[i].format != -1 /* not run */) {
682
                format = 2;
683
                break;
684
            }
685
        }
686

2
        switch (format) {
687
        case -1:
688
        case 2:
689
            if (!act_warned) {
690
                act_warned = 1;
691
                av_log(ctx->avctx, AV_LOG_ERROR,
692
                       "Unsupported: variable ACT flag.\n");
693
            }
694
            break;
695
        case 0:
696
            ctx->pix_fmt = ctx->bit_depth==10
697
                         ? AV_PIX_FMT_GBRP10 : AV_PIX_FMT_GBRP12;
698
            break;
699
2
        case 1:
700
4
            ctx->pix_fmt = ctx->bit_depth==10
701
2
                         ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV444P12;
702
2
            break;
703
        }
704
433
    }
705
435
    avctx->pix_fmt = ctx->pix_fmt;
706
435
    if (ret) {
707
        av_log(ctx->avctx, AV_LOG_ERROR, "%d lines with errors\n", ret);
708
        return AVERROR_INVALIDDATA;
709
    }
710
711
435
    *got_frame = 1;
712
435
    return avpkt->size;
713
}
714
715
149
static av_cold int dnxhd_decode_close(AVCodecContext *avctx)
716
{
717
149
    DNXHDContext *ctx = avctx->priv_data;
718
719
149
    ff_free_vlc(&ctx->ac_vlc);
720
149
    ff_free_vlc(&ctx->dc_vlc);
721
149
    ff_free_vlc(&ctx->run_vlc);
722
723
149
    av_freep(&ctx->rows);
724
725
149
    return 0;
726
}
727
728
AVCodec ff_dnxhd_decoder = {
729
    .name           = "dnxhd",
730
    .long_name      = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
731
    .type           = AVMEDIA_TYPE_VIDEO,
732
    .id             = AV_CODEC_ID_DNXHD,
733
    .priv_data_size = sizeof(DNXHDContext),
734
    .init           = dnxhd_decode_init,
735
    .close          = dnxhd_decode_close,
736
    .decode         = dnxhd_decode_frame,
737
    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
738
                      AV_CODEC_CAP_SLICE_THREADS,
739
    .init_thread_copy = ONLY_IF_THREADS_ENABLED(dnxhd_decode_init_thread_copy),
740
    .profiles       = NULL_IF_CONFIG_SMALL(ff_dnxhd_profiles),
741
};