FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/proresdec.c
Date: 2025-03-08 20:38:41
Exec Total Coverage
Lines: 342 425 80.5%
Functions: 14 16 87.5%
Branches: 179 259 69.1%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2010-2011 Maxim Poliakovski
3 * Copyright (c) 2010-2011 Elvis Presley
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Known FOURCCs: 'apch' (HQ), 'apcn' (SD), 'apcs' (LT), 'apco' (Proxy), 'ap4h' (4444), 'ap4x' (4444 XQ)
25 */
26
27 //#define DEBUG
28
29 #include "config_components.h"
30
31 #include "libavutil/internal.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/mem_internal.h"
34
35 #include "avcodec.h"
36 #include "codec_internal.h"
37 #include "decode.h"
38 #include "get_bits.h"
39 #include "hwaccel_internal.h"
40 #include "hwconfig.h"
41 #include "idctdsp.h"
42 #include "profiles.h"
43 #include "proresdec.h"
44 #include "proresdata.h"
45 #include "thread.h"
46
47 #define ALPHA_SHIFT_16_TO_10(alpha_val) (alpha_val >> 6)
48 #define ALPHA_SHIFT_8_TO_10(alpha_val) ((alpha_val << 2) | (alpha_val >> 6))
49 #define ALPHA_SHIFT_16_TO_12(alpha_val) (alpha_val >> 4)
50 #define ALPHA_SHIFT_8_TO_12(alpha_val) ((alpha_val << 4) | (alpha_val >> 4))
51
52 5100 static void inline unpack_alpha(GetBitContext *gb, uint16_t *dst, int num_coeffs,
53 const int num_bits, const int decode_precision) {
54 5100 const int mask = (1 << num_bits) - 1;
55 int i, idx, val, alpha_val;
56
57 5100 idx = 0;
58 5100 alpha_val = mask;
59 do {
60 do {
61
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 58400 if (get_bits1(gb)) {
62 43404 val = get_bits(gb, num_bits);
63 } else {
64 int sign;
65
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 14996 val = get_bits(gb, num_bits == 16 ? 7 : 4);
66 14996 sign = val & 1;
67 14996 val = (val + 2) >> 1;
68
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 14996 if (sign)
69 ✗ val = -val;
70 }
71 58400 alpha_val = (alpha_val + val) & mask;
72
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 58400 if (num_bits == 16) {
73
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 58400 if (decode_precision == 10) {
74 ✗ dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val);
75 } else { /* 12b */
76 58400 dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val);
77 }
78 } else {
79 ✗ if (decode_precision == 10) {
80 ✗ dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val);
81 } else { /* 12b */
82 ✗ dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);
83 }
84 }
85
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 58400 if (idx >= num_coeffs)
86 36 break;
87
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 58364 } while (get_bits_left(gb)>0 && get_bits1(gb));
88 37552 val = get_bits(gb, 4);
89
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 37552 if (!val)
90 35779 val = get_bits(gb, 11);
91
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 37552 if (idx + val > num_coeffs)
92 140 val = num_coeffs - idx;
93
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 37552 if (num_bits == 16) {
94
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 10423952 for (i = 0; i < val; i++) {
95
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 10386400 if (decode_precision == 10) {
96 ✗ dst[idx++] = ALPHA_SHIFT_16_TO_10(alpha_val);
97 } else { /* 12b */
98 10386400 dst[idx++] = ALPHA_SHIFT_16_TO_12(alpha_val);
99 }
100 }
101 } else {
102 ✗ for (i = 0; i < val; i++) {
103 ✗ if (decode_precision == 10) {
104 ✗ dst[idx++] = ALPHA_SHIFT_8_TO_10(alpha_val);
105 } else { /* 12b */
106 ✗ dst[idx++] = ALPHA_SHIFT_8_TO_12(alpha_val);
107 }
108 }
109 }
110
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 37552 } while (idx < num_coeffs);
111 5100 }
112
113 ✗ static void unpack_alpha_10(GetBitContext *gb, uint16_t *dst, int num_coeffs,
114 const int num_bits)
115 {
116 ✗ if (num_bits == 16) {
117 ✗ unpack_alpha(gb, dst, num_coeffs, 16, 10);
118 } else { /* 8 bits alpha */
119 ✗ unpack_alpha(gb, dst, num_coeffs, 8, 10);
120 }
121 ✗ }
122
123 5100 static void unpack_alpha_12(GetBitContext *gb, uint16_t *dst, int num_coeffs,
124 const int num_bits)
125 {
126
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 5100 if (num_bits == 16) {
127 5100 unpack_alpha(gb, dst, num_coeffs, 16, 12);
128 } else { /* 8 bits alpha */
129 ✗ unpack_alpha(gb, dst, num_coeffs, 8, 12);
130 }
131 5100 }
132
133 73 static av_cold int decode_init(AVCodecContext *avctx)
134 {
135 73 ProresContext *ctx = avctx->priv_data;
136
137 73 avctx->bits_per_raw_sample = 10;
138
139
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 73 switch (avctx->codec_tag) {
140 14 case MKTAG('a','p','c','o'):
141 14 avctx->profile = AV_PROFILE_PRORES_PROXY;
142 14 break;
143 2 case MKTAG('a','p','c','s'):
144 2 avctx->profile = AV_PROFILE_PRORES_LT;
145 2 break;
146 21 case MKTAG('a','p','c','n'):
147 21 avctx->profile = AV_PROFILE_PRORES_STANDARD;
148 21 break;
149 12 case MKTAG('a','p','c','h'):
150 12 avctx->profile = AV_PROFILE_PRORES_HQ;
151 12 break;
152 24 case MKTAG('a','p','4','h'):
153 24 avctx->profile = AV_PROFILE_PRORES_4444;
154 24 avctx->bits_per_raw_sample = 12;
155 24 break;
156 ✗ case MKTAG('a','p','4','x'):
157 ✗ avctx->profile = AV_PROFILE_PRORES_XQ;
158 ✗ avctx->bits_per_raw_sample = 12;
159 ✗ break;
160 ✗ default:
161 ✗ avctx->profile = AV_PROFILE_UNKNOWN;
162 ✗ av_log(avctx, AV_LOG_WARNING, "Unknown prores profile %d\n", avctx->codec_tag);
163 }
164
165 146 ctx->unpack_alpha = avctx->bits_per_raw_sample == 10 ?
166
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 73 unpack_alpha_10 : unpack_alpha_12;
167
168 73 av_log(avctx, AV_LOG_DEBUG,
169 "Auto bitdepth precision. Use %db decoding based on codec tag.\n",
170 avctx->bits_per_raw_sample);
171
172 73 ff_blockdsp_init(&ctx->bdsp);
173 73 ff_proresdsp_init(&ctx->prodsp, avctx->bits_per_raw_sample);
174
175 73 ff_permute_scantable(ctx->progressive_scan, ff_prores_progressive_scan,
176 73 ctx->prodsp.idct_permutation);
177 73 ff_permute_scantable(ctx->interlaced_scan, ff_prores_interlaced_scan,
178 73 ctx->prodsp.idct_permutation);
179
180 73 ctx->pix_fmt = AV_PIX_FMT_NONE;
181
182 73 return 0;
183 }
184
185 1061 static int decode_frame_header(ProresContext *ctx, const uint8_t *buf,
186 const int data_size, AVCodecContext *avctx)
187 {
188 int hdr_size, width, height, flags;
189 int version;
190 const uint8_t *ptr;
191 enum AVPixelFormat pix_fmt;
192
193 1061 hdr_size = AV_RB16(buf);
194 ff_dlog(avctx, "header size %d\n", hdr_size);
195
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 1061 if (hdr_size > data_size) {
196 ✗ av_log(avctx, AV_LOG_ERROR, "error, wrong header size\n");
197 ✗ return AVERROR_INVALIDDATA;
198 }
199
200 1061 version = AV_RB16(buf + 2);
201 ff_dlog(avctx, "%.4s version %d\n", buf+4, version);
202
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 1061 if (version > 1) {
203 ✗ av_log(avctx, AV_LOG_ERROR, "unsupported version: %d\n", version);
204 ✗ return AVERROR_PATCHWELCOME;
205 }
206
207 1061 width = AV_RB16(buf + 8);
208 1061 height = AV_RB16(buf + 10);
209
210
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 1061 if (width != avctx->width || height != avctx->height) {
211 int ret;
212
213 ✗ av_log(avctx, AV_LOG_WARNING, "picture resolution change: %dx%d -> %dx%d\n",
214 avctx->width, avctx->height, width, height);
215 ✗ if ((ret = ff_set_dimensions(avctx, width, height)) < 0)
216 ✗ return ret;
217 }
218
219 1061 ctx->frame_type = (buf[12] >> 2) & 3;
220 1061 ctx->alpha_info = buf[17] & 0xf;
221
222
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 1061 if (ctx->alpha_info > 2) {
223 ✗ av_log(avctx, AV_LOG_ERROR, "Invalid alpha mode %d\n", ctx->alpha_info);
224 ✗ return AVERROR_INVALIDDATA;
225 }
226
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 1061 if (avctx->skip_alpha) ctx->alpha_info = 0;
227
228 ff_dlog(avctx, "frame type %d\n", ctx->frame_type);
229
230
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 1061 if (ctx->frame_type == 0) {
231 633 ctx->scan = ctx->progressive_scan; // permuted
232 } else {
233 428 ctx->scan = ctx->interlaced_scan; // permuted
234 428 ctx->frame->flags |= AV_FRAME_FLAG_INTERLACED;
235
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 428 if (ctx->frame_type == 1)
236 408 ctx->frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
237 }
238
239
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 1061 if (ctx->alpha_info) {
240
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 5 if (avctx->bits_per_raw_sample == 10) {
241 ✗ pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P10 : AV_PIX_FMT_YUVA422P10;
242 } else { /* 12b */
243
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 5 pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUVA444P12 : AV_PIX_FMT_YUVA422P12;
244 }
245 } else {
246
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 1056 if (avctx->bits_per_raw_sample == 10) {
247
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 643 pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_YUV422P10;
248 } else { /* 12b */
249
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 413 pix_fmt = (buf[12] & 0xC0) == 0xC0 ? AV_PIX_FMT_YUV444P12 : AV_PIX_FMT_YUV422P12;
250 }
251 }
252
253
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 1061 if (pix_fmt != ctx->pix_fmt) {
254 #define HWACCEL_MAX (CONFIG_PRORES_VIDEOTOOLBOX_HWACCEL)
255 #if HWACCEL_MAX
256 enum AVPixelFormat pix_fmts[HWACCEL_MAX + 2], *fmtp = pix_fmts;
257 int ret;
258
259 ctx->pix_fmt = pix_fmt;
260
261 #if CONFIG_PRORES_VIDEOTOOLBOX_HWACCEL
262 *fmtp++ = AV_PIX_FMT_VIDEOTOOLBOX;
263 #endif
264 *fmtp++ = ctx->pix_fmt;
265 *fmtp = AV_PIX_FMT_NONE;
266
267 if ((ret = ff_get_format(avctx, pix_fmts)) < 0)
268 return ret;
269
270 avctx->pix_fmt = ret;
271 #else
272 70 avctx->pix_fmt = ctx->pix_fmt = pix_fmt;
273 #endif
274 }
275
276 1061 ctx->frame->color_primaries = buf[14];
277 1061 ctx->frame->color_trc = buf[15];
278 1061 ctx->frame->colorspace = buf[16];
279 1061 ctx->frame->color_range = AVCOL_RANGE_MPEG;
280
281 1061 ptr = buf + 20;
282 1061 flags = buf[19];
283 ff_dlog(avctx, "flags %x\n", flags);
284
285
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 1061 if (flags & 2) {
286
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 1061 if(buf + data_size - ptr < 64) {
287 ✗ av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
288 ✗ return AVERROR_INVALIDDATA;
289 }
290 1061 ff_permute_scantable(ctx->qmat_luma, ctx->prodsp.idct_permutation, ptr);
291 1061 ptr += 64;
292 } else {
293 ✗ memset(ctx->qmat_luma, 4, 64);
294 }
295
296
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 1061 if (flags & 1) {
297
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 1061 if(buf + data_size - ptr < 64) {
298 ✗ av_log(avctx, AV_LOG_ERROR, "Header truncated\n");
299 ✗ return AVERROR_INVALIDDATA;
300 }
301 1061 ff_permute_scantable(ctx->qmat_chroma, ctx->prodsp.idct_permutation, ptr);
302 } else {
303 ✗ memcpy(ctx->qmat_chroma, ctx->qmat_luma, 64);
304 }
305
306 1061 return hdr_size;
307 }
308
309 1489 static int decode_picture_header(AVCodecContext *avctx, const uint8_t *buf, const int buf_size)
310 {
311 1489 ProresContext *ctx = avctx->priv_data;
312 int i, hdr_size, slice_count;
313 unsigned pic_data_size;
314 int log2_slice_mb_width, log2_slice_mb_height;
315 int slice_mb_count, mb_x, mb_y;
316 const uint8_t *data_ptr, *index_ptr;
317
318 1489 hdr_size = buf[0] >> 3;
319
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 1489 if (hdr_size < 8 || hdr_size > buf_size) {
320 ✗ av_log(avctx, AV_LOG_ERROR, "error, wrong picture header size\n");
321 ✗ return AVERROR_INVALIDDATA;
322 }
323
324 1489 pic_data_size = AV_RB32(buf + 1);
325
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 1489 if (pic_data_size > buf_size) {
326 ✗ av_log(avctx, AV_LOG_ERROR, "error, wrong picture data size\n");
327 ✗ return AVERROR_INVALIDDATA;
328 }
329
330 1489 log2_slice_mb_width = buf[7] >> 4;
331 1489 log2_slice_mb_height = buf[7] & 0xF;
332
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 1489 if (log2_slice_mb_width > 3 || log2_slice_mb_height) {
333 ✗ av_log(avctx, AV_LOG_ERROR, "unsupported slice resolution: %dx%d\n",
334 1 << log2_slice_mb_width, 1 << log2_slice_mb_height);
335 ✗ return AVERROR_INVALIDDATA;
336 }
337
338 1489 ctx->mb_width = (avctx->width + 15) >> 4;
339
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 1489 if (ctx->frame_type)
340 856 ctx->mb_height = (avctx->height + 31) >> 5;
341 else
342 633 ctx->mb_height = (avctx->height + 15) >> 4;
343
344 // QT ignores the written value
345 // slice_count = AV_RB16(buf + 5);
346 1489 slice_count = ctx->mb_height * ((ctx->mb_width >> log2_slice_mb_width) +
347 1489 av_popcount(ctx->mb_width & (1 << log2_slice_mb_width) - 1));
348
349
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 1489 if (ctx->slice_count != slice_count || !ctx->slices) {
350 70 av_freep(&ctx->slices);
351 70 ctx->slice_count = 0;
352 70 ctx->slices = av_calloc(slice_count, sizeof(*ctx->slices));
353
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 70 if (!ctx->slices)
354 ✗ return AVERROR(ENOMEM);
355 70 ctx->slice_count = slice_count;
356 }
357
358
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 1489 if (!slice_count)
359 ✗ return AVERROR(EINVAL);
360
361
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 1489 if (hdr_size + slice_count*2 > buf_size) {
362 ✗ av_log(avctx, AV_LOG_ERROR, "error, wrong slice count\n");
363 ✗ return AVERROR_INVALIDDATA;
364 }
365
366 // parse slice information
367 1489 index_ptr = buf + hdr_size;
368 1489 data_ptr = index_ptr + slice_count*2;
369
370 1489 slice_mb_count = 1 << log2_slice_mb_width;
371 1489 mb_x = 0;
372 1489 mb_y = 0;
373
374
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 89359 for (i = 0; i < slice_count; i++) {
375 87870 SliceContext *slice = &ctx->slices[i];
376
377 87870 slice->data = data_ptr;
378 87870 data_ptr += AV_RB16(index_ptr + i*2);
379
380
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 118515 while (ctx->mb_width - mb_x < slice_mb_count)
381 30645 slice_mb_count >>= 1;
382
383 87870 slice->mb_x = mb_x;
384 87870 slice->mb_y = mb_y;
385 87870 slice->mb_count = slice_mb_count;
386 87870 slice->data_size = data_ptr - slice->data;
387
388
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 87870 if (slice->data_size < 6) {
389 ✗ av_log(avctx, AV_LOG_ERROR, "error, wrong slice data size\n");
390 ✗ return AVERROR_INVALIDDATA;
391 }
392
393 87870 mb_x += slice_mb_count;
394
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 87870 if (mb_x == ctx->mb_width) {
395 16977 slice_mb_count = 1 << log2_slice_mb_width;
396 16977 mb_x = 0;
397 16977 mb_y++;
398 }
399
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 87870 if (data_ptr > buf + buf_size) {
400 ✗ av_log(avctx, AV_LOG_ERROR, "error, slice out of bounds\n");
401 ✗ return AVERROR_INVALIDDATA;
402 }
403 }
404
405
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 1489 if (mb_x || mb_y != ctx->mb_height) {
406 ✗ av_log(avctx, AV_LOG_ERROR, "error wrong mb count y %d h %d\n",
407 mb_y, ctx->mb_height);
408 ✗ return AVERROR_INVALIDDATA;
409 }
410
411 1489 return pic_data_size;
412 }
413
414 #define DECODE_CODEWORD(val, codebook, SKIP) \
415 do { \
416 unsigned int rice_order, exp_order, switch_bits; \
417 unsigned int q, buf, bits; \
418 \
419 UPDATE_CACHE_32(re, gb); /* We really need 32 bits */ \
420 buf = GET_CACHE(re, gb); \
421 \
422 /* number of bits to switch between rice and exp golomb */ \
423 switch_bits = codebook & 3; \
424 rice_order = codebook >> 5; \
425 exp_order = (codebook >> 2) & 7; \
426 \
427 q = 31 - av_log2(buf); \
428 \
429 if (q > switch_bits) { /* exp golomb */ \
430 bits = exp_order - switch_bits + (q<<1); \
431 if (bits > 31) \
432 return AVERROR_INVALIDDATA; \
433 val = SHOW_UBITS(re, gb, bits) - (1 << exp_order) + \
434 ((switch_bits + 1) << rice_order); \
435 SKIP(re, gb, bits); \
436 } else if (rice_order) { \
437 SKIP_BITS(re, gb, q+1); \
438 val = (q << rice_order) + SHOW_UBITS(re, gb, rice_order); \
439 SKIP(re, gb, rice_order); \
440 } else { \
441 val = q; \
442 SKIP(re, gb, q+1); \
443 } \
444 } while (0)
445
446 #define TOSIGNED(x) (((x) >> 1) ^ (-((x) & 1)))
447
448 #define FIRST_DC_CB 0xB8
449
450 static const uint8_t dc_codebook[7] = { 0x04, 0x28, 0x28, 0x4D, 0x4D, 0x70, 0x70};
451
452 262098 static av_always_inline int decode_dc_coeffs(GetBitContext *gb, int16_t *out,
453 int blocks_per_slice)
454 {
455 int16_t prev_dc;
456 int code, i, sign;
457
458 262098 OPEN_READER(re, gb);
459
460
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 262098 DECODE_CODEWORD(code, FIRST_DC_CB, LAST_SKIP_BITS);
461 262098 prev_dc = TOSIGNED(code);
462 262098 out[0] = prev_dc;
463
464 262098 out += 64; // dc coeff for the next block
465
466 262098 code = 5;
467 262098 sign = 0;
468
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 5213076 for (i = 1; i < blocks_per_slice; i++, out += 64) {
469
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 4950978 DECODE_CODEWORD(code, dc_codebook[FFMIN(code, 6U)], LAST_SKIP_BITS);
470
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 4950978 if(code) sign ^= -(code & 1);
471 1852456 else sign = 0;
472 4950978 prev_dc += (((code + 1) >> 1) ^ sign) - sign;
473 4950978 out[0] = prev_dc;
474 }
475 262098 CLOSE_READER(re, gb);
476 262098 return 0;
477 }
478
479 // adaptive codebook switching lut according to previous run/level values
480 static const uint8_t run_to_cb[16] = { 0x06, 0x06, 0x05, 0x05, 0x04, 0x29, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x28, 0x28, 0x4C };
481 static const uint8_t lev_to_cb[10] = { 0x04, 0x0A, 0x05, 0x06, 0x04, 0x28, 0x28, 0x28, 0x28, 0x4C };
482
483 262098 static av_always_inline int decode_ac_coeffs(AVCodecContext *avctx, GetBitContext *gb,
484 int16_t *out, int blocks_per_slice)
485 {
486 262098 const ProresContext *ctx = avctx->priv_data;
487 int block_mask, sign;
488 unsigned pos, run, level;
489 int max_coeffs, i, bits_left;
490 262098 int log2_block_count = av_log2(blocks_per_slice);
491
492 262098 OPEN_READER(re, gb);
493 262098 UPDATE_CACHE_32(re, gb);
494 262098 run = 4;
495 262098 level = 2;
496
497 262098 max_coeffs = 64 << log2_block_count;
498 262098 block_mask = blocks_per_slice - 1;
499
500 262098 for (pos = block_mask;;) {
501 84950870 bits_left = gb->size_in_bits - re_index;
502
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 84950870 if (bits_left <= 0 || (bits_left < 32 && !SHOW_UBITS(re, gb, bits_left)))
503 break;
504
505
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 84688772 DECODE_CODEWORD(run, run_to_cb[FFMIN(run, 15)], LAST_SKIP_BITS);
506 84688772 pos += run + 1;
507
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 84688772 if (pos >= max_coeffs) {
508 ✗ av_log(avctx, AV_LOG_ERROR, "ac tex damaged %d, %d\n", pos, max_coeffs);
509 ✗ return AVERROR_INVALIDDATA;
510 }
511
512
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 84688772 DECODE_CODEWORD(level, lev_to_cb[FFMIN(level, 9)], SKIP_BITS);
513 84688772 level += 1;
514
515 84688772 i = pos >> log2_block_count;
516
517 84688772 sign = SHOW_SBITS(re, gb, 1);
518 84688772 SKIP_BITS(re, gb, 1);
519 84688772 out[((pos & block_mask) << 6) + ctx->scan[i]] = ((level ^ sign) - sign);
520 }
521
522 262098 CLOSE_READER(re, gb);
523 262098 return 0;
524 }
525
526 87870 static int decode_slice_luma(AVCodecContext *avctx, SliceContext *slice,
527 uint16_t *dst, int dst_stride,
528 const uint8_t *buf, unsigned buf_size,
529 const int16_t *qmat)
530 {
531 87870 const ProresContext *ctx = avctx->priv_data;
532 87870 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
533 int16_t *block;
534 GetBitContext gb;
535 87870 int i, blocks_per_slice = slice->mb_count<<2;
536 int ret;
537
538
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 2296434 for (i = 0; i < blocks_per_slice; i++)
539 2208564 ctx->bdsp.clear_block(blocks+(i<<6));
540
541 87870 init_get_bits(&gb, buf, buf_size << 3);
542
543
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 87870 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
544 ✗ return ret;
545
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 87870 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
546 ✗ return ret;
547
548 87870 block = blocks;
549
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 640011 for (i = 0; i < slice->mb_count; i++) {
550 552141 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
551 552141 ctx->prodsp.idct_put(dst +8, dst_stride, block+(1<<6), qmat);
552 552141 ctx->prodsp.idct_put(dst+4*dst_stride , dst_stride, block+(2<<6), qmat);
553 552141 ctx->prodsp.idct_put(dst+4*dst_stride+8, dst_stride, block+(3<<6), qmat);
554 552141 block += 4*64;
555 552141 dst += 16;
556 }
557 87870 return 0;
558 }
559
560 174228 static int decode_slice_chroma(AVCodecContext *avctx, SliceContext *slice,
561 uint16_t *dst, int dst_stride,
562 const uint8_t *buf, unsigned buf_size,
563 const int16_t *qmat, int log2_blocks_per_mb)
564 {
565 174228 ProresContext *ctx = avctx->priv_data;
566 174228 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
567 int16_t *block;
568 GetBitContext gb;
569 174228 int i, j, blocks_per_slice = slice->mb_count << log2_blocks_per_mb;
570 int ret;
571
572
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 3178740 for (i = 0; i < blocks_per_slice; i++)
573 3004512 ctx->bdsp.clear_block(blocks+(i<<6));
574
575 174228 init_get_bits(&gb, buf, buf_size << 3);
576
577
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 174228 if ((ret = decode_dc_coeffs(&gb, blocks, blocks_per_slice)) < 0)
578 ✗ return ret;
579
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 174228 if ((ret = decode_ac_coeffs(avctx, &gb, blocks, blocks_per_slice)) < 0)
580 ✗ return ret;
581
582 174228 block = blocks;
583
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 1268790 for (i = 0; i < slice->mb_count; i++) {
584
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 2596818 for (j = 0; j < log2_blocks_per_mb; j++) {
585 1502256 ctx->prodsp.idct_put(dst, dst_stride, block+(0<<6), qmat);
586 1502256 ctx->prodsp.idct_put(dst+4*dst_stride, dst_stride, block+(1<<6), qmat);
587 1502256 block += 2*64;
588 1502256 dst += 8;
589 }
590 }
591 174228 return 0;
592 }
593
594 /**
595 * Decode alpha slice plane.
596 */
597 5100 static void decode_slice_alpha(const ProresContext *ctx,
598 uint16_t *dst, int dst_stride,
599 const uint8_t *buf, int buf_size,
600 int blocks_per_slice)
601 {
602 GetBitContext gb;
603 int i;
604 5100 LOCAL_ALIGNED_32(int16_t, blocks, [8*4*64]);
605 int16_t *block;
606
607
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 168300 for (i = 0; i < blocks_per_slice<<2; i++)
608 163200 ctx->bdsp.clear_block(blocks+(i<<6));
609
610 5100 init_get_bits(&gb, buf, buf_size << 3);
611
612
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 5100 if (ctx->alpha_info == 2) {
613 5100 ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 16);
614 } else {
615 ✗ ctx->unpack_alpha(&gb, blocks, blocks_per_slice * 4 * 64, 8);
616 }
617
618 5100 block = blocks;
619
620
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 86700 for (i = 0; i < 16; i++) {
621 81600 memcpy(dst, block, 16 * blocks_per_slice * sizeof(*dst));
622 81600 dst += dst_stride >> 1;
623 81600 block += 16 * blocks_per_slice;
624 }
625 5100 }
626
627 87870 static int decode_slice_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
628 {
629 87870 const ProresContext *ctx = avctx->priv_data;
630 87870 SliceContext *slice = &ctx->slices[jobnr];
631 87870 const uint8_t *buf = slice->data;
632 87870 AVFrame *pic = ctx->frame;
633 int i, hdr_size, qscale, log2_chroma_blocks_per_mb;
634 int luma_stride, chroma_stride;
635 int y_data_size, u_data_size, v_data_size, a_data_size, offset;
636 uint8_t *dest_y, *dest_u, *dest_v;
637 87870 LOCAL_ALIGNED_16(int16_t, qmat_luma_scaled, [64]);
638 87870 LOCAL_ALIGNED_16(int16_t, qmat_chroma_scaled,[64]);
639 int mb_x_shift;
640 int ret;
641 uint16_t val_no_chroma;
642
643 87870 slice->ret = -1;
644 //av_log(avctx, AV_LOG_INFO, "slice %d mb width %d mb x %d y %d\n",
645 // jobnr, slice->mb_count, slice->mb_x, slice->mb_y);
646
647 // slice header
648 87870 hdr_size = buf[0] >> 3;
649 87870 qscale = av_clip(buf[1], 1, 224);
650
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 87870 qscale = qscale > 128 ? qscale - 96 << 2: qscale;
651 87870 y_data_size = AV_RB16(buf + 2);
652 87870 u_data_size = AV_RB16(buf + 4);
653 87870 v_data_size = slice->data_size - y_data_size - u_data_size - hdr_size;
654
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 87870 if (hdr_size > 7) v_data_size = AV_RB16(buf + 6);
655 87870 a_data_size = slice->data_size - y_data_size - u_data_size -
656 87870 v_data_size - hdr_size;
657
658
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 87870 if (y_data_size < 0 || u_data_size < 0 || v_data_size < 0
659
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 87870 || hdr_size+y_data_size+u_data_size+v_data_size > slice->data_size){
660 ✗ av_log(avctx, AV_LOG_ERROR, "invalid plane data size\n");
661 ✗ return AVERROR_INVALIDDATA;
662 }
663
664 87870 buf += hdr_size;
665
666
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 5711550 for (i = 0; i < 64; i++) {
667 5623680 qmat_luma_scaled [i] = ctx->qmat_luma [i] * qscale;
668 5623680 qmat_chroma_scaled[i] = ctx->qmat_chroma[i] * qscale;
669 }
670
671
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 87870 if (ctx->frame_type == 0) {
672 44622 luma_stride = pic->linesize[0];
673 44622 chroma_stride = pic->linesize[1];
674 } else {
675 43248 luma_stride = pic->linesize[0] << 1;
676 43248 chroma_stride = pic->linesize[1] << 1;
677 }
678
679
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 87870 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P10 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P10 ||
680
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 87870 avctx->pix_fmt == AV_PIX_FMT_YUV444P12 || avctx->pix_fmt == AV_PIX_FMT_YUVA444P12) {
681 32946 mb_x_shift = 5;
682 32946 log2_chroma_blocks_per_mb = 2;
683 } else {
684 54924 mb_x_shift = 4;
685 54924 log2_chroma_blocks_per_mb = 1;
686 }
687
688 87870 offset = (slice->mb_y << 4) * luma_stride + (slice->mb_x << 5);
689 87870 dest_y = pic->data[0] + offset;
690 87870 dest_u = pic->data[1] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
691 87870 dest_v = pic->data[2] + (slice->mb_y << 4) * chroma_stride + (slice->mb_x << mb_x_shift);
692
693
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 87870 if (ctx->frame_type && ctx->first_field ^ !!(ctx->frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST)) {
694 21624 dest_y += pic->linesize[0];
695 21624 dest_u += pic->linesize[1];
696 21624 dest_v += pic->linesize[2];
697 21624 offset += pic->linesize[3];
698 }
699
700 87870 ret = decode_slice_luma(avctx, slice, (uint16_t*)dest_y, luma_stride,
701 buf, y_data_size, qmat_luma_scaled);
702
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 87870 if (ret < 0)
703 ✗ return ret;
704
705
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 87870 if (!(avctx->flags & AV_CODEC_FLAG_GRAY) && (u_data_size + v_data_size) > 0) {
706 87114 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_u, chroma_stride,
707 buf + y_data_size, u_data_size,
708 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
709
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 87114 if (ret < 0)
710 ✗ return ret;
711
712 87114 ret = decode_slice_chroma(avctx, slice, (uint16_t*)dest_v, chroma_stride,
713 87114 buf + y_data_size + u_data_size, v_data_size,
714 qmat_chroma_scaled, log2_chroma_blocks_per_mb);
715
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 87114 if (ret < 0)
716 ✗ return ret;
717 }
718 else {
719 756 size_t mb_max_x = slice->mb_count << (mb_x_shift - 1);
720 size_t i, j;
721
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 756 if (avctx->bits_per_raw_sample == 10) {
722 756 val_no_chroma = 511;
723 } else { /* 12b */
724 ✗ val_no_chroma = 511 * 4;
725 }
726
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 12852 for (i = 0; i < 16; ++i)
727
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 634176 for (j = 0; j < mb_max_x; ++j) {
728 622080 *(uint16_t*)(dest_u + (i * chroma_stride) + (j << 1)) = val_no_chroma;
729 622080 *(uint16_t*)(dest_v + (i * chroma_stride) + (j << 1)) = val_no_chroma;
730 }
731 }
732
733 /* decode alpha plane if available */
734
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 87870 if (ctx->alpha_info && pic->data[3] && a_data_size) {
735 5100 uint8_t *dest_a = pic->data[3] + offset;
736 5100 decode_slice_alpha(ctx, (uint16_t*)dest_a, luma_stride,
737 5100 buf + y_data_size + u_data_size + v_data_size,
738 5100 a_data_size, slice->mb_count);
739 }
740
741 87870 slice->ret = 0;
742 87870 return 0;
743 }
744
745 1489 static int decode_picture(AVCodecContext *avctx)
746 {
747 1489 ProresContext *ctx = avctx->priv_data;
748 int i;
749 1489 int error = 0;
750
751 1489 avctx->execute2(avctx, decode_slice_thread, NULL, NULL, ctx->slice_count);
752
753
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 89359 for (i = 0; i < ctx->slice_count; i++)
754 87870 error += ctx->slices[i].ret < 0;
755
756
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 1489 if (error)
757 ✗ ctx->frame->decode_error_flags = FF_DECODE_ERROR_INVALID_BITSTREAM;
758
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 1489 if (error < ctx->slice_count)
759 1489 return 0;
760
761 ✗ return ctx->slices[0].ret;
762 }
763
764 1061 static int decode_frame(AVCodecContext *avctx, AVFrame *frame,
765 int *got_frame, AVPacket *avpkt)
766 {
767 1061 ProresContext *ctx = avctx->priv_data;
768 1061 const uint8_t *buf = avpkt->data;
769 1061 int buf_size = avpkt->size;
770 int frame_hdr_size, pic_size, ret;
771
772
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 1061 if (buf_size < 28 || AV_RL32(buf + 4) != AV_RL32("icpf")) {
773 ✗ av_log(avctx, AV_LOG_ERROR, "invalid frame header\n");
774 ✗ return AVERROR_INVALIDDATA;
775 }
776
777 1061 ctx->frame = frame;
778 1061 ctx->first_field = 1;
779
780 1061 buf += 8;
781 1061 buf_size -= 8;
782
783 1061 frame_hdr_size = decode_frame_header(ctx, buf, buf_size, avctx);
784
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 1061 if (frame_hdr_size < 0)
785 ✗ return frame_hdr_size;
786
787 1061 buf += frame_hdr_size;
788 1061 buf_size -= frame_hdr_size;
789
790
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 1061 if ((ret = ff_thread_get_buffer(avctx, frame, 0)) < 0)
791 ✗ return ret;
792 1061 ff_thread_finish_setup(avctx);
793
794 if (HWACCEL_MAX && avctx->hwaccel) {
795 const FFHWAccel *hwaccel = ffhwaccel(avctx->hwaccel);
796 ret = hwaccel->start_frame(avctx, NULL, 0);
797 if (ret < 0)
798 return ret;
799 ret = hwaccel->decode_slice(avctx, avpkt->data, avpkt->size);
800 if (ret < 0)
801 return ret;
802 ret = hwaccel->end_frame(avctx);
803 if (ret < 0)
804 return ret;
805 goto finish;
806 }
807
808 1061 decode_picture:
809 1489 pic_size = decode_picture_header(avctx, buf, buf_size);
810
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 1489 if (pic_size < 0) {
811 ✗ av_log(avctx, AV_LOG_ERROR, "error decoding picture header\n");
812 ✗ return pic_size;
813 }
814
815
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 1489 if ((ret = decode_picture(avctx)) < 0) {
816 ✗ av_log(avctx, AV_LOG_ERROR, "error decoding picture\n");
817 ✗ return ret;
818 }
819
820 1489 buf += pic_size;
821 1489 buf_size -= pic_size;
822
823
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 1489 if (ctx->frame_type && buf_size > 0 && ctx->first_field) {
824 428 ctx->first_field = 0;
825 428 goto decode_picture;
826 }
827
828 1061 finish:
829 1061 *got_frame = 1;
830
831 1061 return avpkt->size;
832 }
833
834 73 static av_cold int decode_close(AVCodecContext *avctx)
835 {
836 73 ProresContext *ctx = avctx->priv_data;
837
838 73 av_freep(&ctx->slices);
839
840 73 return 0;
841 }
842
843 #if HAVE_THREADS
844 ✗ static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src)
845 {
846 ✗ ProresContext *csrc = src->priv_data;
847 ✗ ProresContext *cdst = dst->priv_data;
848
849 ✗ cdst->pix_fmt = csrc->pix_fmt;
850
851 ✗ return 0;
852 }
853 #endif
854
855 const FFCodec ff_prores_decoder = {
856 .p.name = "prores",
857 CODEC_LONG_NAME("Apple ProRes (iCodec Pro)"),
858 .p.type = AVMEDIA_TYPE_VIDEO,
859 .p.id = AV_CODEC_ID_PRORES,
860 .priv_data_size = sizeof(ProresContext),
861 .init = decode_init,
862 .close = decode_close,
863 FF_CODEC_DECODE_CB(decode_frame),
864 UPDATE_THREAD_CONTEXT(update_thread_context),
865 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_SLICE_THREADS | AV_CODEC_CAP_FRAME_THREADS,
866 .p.profiles = NULL_IF_CONFIG_SMALL(ff_prores_profiles),
867 #if HWACCEL_MAX
868 .hw_configs = (const AVCodecHWConfigInternal *const []) {
869 #if CONFIG_PRORES_VIDEOTOOLBOX_HWACCEL
870 HWACCEL_VIDEOTOOLBOX(prores),
871 #endif
872 NULL
873 },
874 #endif
875 };
876