FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/svq3.c
Date: 2026-01-14 03:33:33
Exec Total Coverage
Lines: 687 830 82.8%
Functions: 18 19 94.7%
Branches: 437 565 77.3%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2003 The FFmpeg Project
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /*
22 * How to use this decoder:
23 * SVQ3 data is transported within Apple Quicktime files. Quicktime files
24 * have stsd atoms to describe media trak properties. A stsd atom for a
25 * video trak contains 1 or more ImageDescription atoms. These atoms begin
26 * with the 4-byte length of the atom followed by the codec fourcc. Some
27 * decoders need information in this atom to operate correctly. Such
28 * is the case with SVQ3. In order to get the best use out of this decoder,
29 * the calling app must make the SVQ3 ImageDescription atom available
30 * via the AVCodecContext's extradata[_size] field:
31 *
32 * AVCodecContext.extradata = pointer to ImageDescription, first characters
33 * are expected to be 'S', 'V', 'Q', and '3', NOT the 4-byte atom length
34 * AVCodecContext.extradata_size = size of ImageDescription atom memory
35 * buffer (which will be the same as the ImageDescription atom size field
36 * from the QT file, minus 4 bytes since the length is missing)
37 *
38 * You will know you have these parameters passed correctly when the decoder
39 * correctly decodes this file:
40 * http://samples.mplayerhq.hu/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov
41 */
42
43 #include <inttypes.h>
44
45 #include "libavutil/attributes.h"
46 #include "libavutil/crc.h"
47 #include "libavutil/mem.h"
48 #include "libavutil/mem_internal.h"
49
50 #include "codec_internal.h"
51 #include "decode.h"
52 #include "avcodec.h"
53 #include "mpegutils.h"
54 #include "h264data.h"
55 #include "h264dsp.h"
56 #include "h264pred.h"
57 #include "h264_parse.h"
58 #include "golomb.h"
59 #include "hpeldsp.h"
60 #include "mathops.h"
61 #include "rectangle.h"
62 #include "tpeldsp.h"
63 #include "videodsp.h"
64
65 #if CONFIG_ZLIB
66 #include <zlib.h>
67 #endif
68
69 /**
70 * @file
71 * svq3 decoder.
72 */
73
74 #define NUM_PICS 3
75
76 typedef struct SVQ3Frame {
77 AVFrame *f;
78
79 int16_t (*motion_val[2])[2];
80
81 uint32_t *mb_type;
82 } SVQ3Frame;
83
84 typedef struct SVQ3Context {
85 AVCodecContext *avctx;
86
87 H264DSPContext h264dsp;
88 H264PredContext hpc;
89 HpelDSPContext hdsp;
90 TpelDSPContext tdsp;
91 VideoDSPContext vdsp;
92
93 SVQ3Frame *cur_pic;
94 SVQ3Frame *next_pic;
95 SVQ3Frame *last_pic;
96 GetBitContext gb;
97 GetBitContext gb_slice;
98 uint8_t *slice_buf;
99 unsigned slice_buf_size;
100 int halfpel_flag;
101 int thirdpel_flag;
102 int has_watermark;
103 uint32_t watermark_key;
104 int adaptive_quant;
105 int h_edge_pos;
106 int v_edge_pos;
107 int slice_num;
108 int qscale;
109 int cbp;
110 int frame_num;
111 int frame_num_offset;
112 int prev_frame_num_offset;
113 int prev_frame_num;
114
115 enum AVPictureType pict_type;
116 enum AVPictureType slice_type;
117 int low_delay;
118
119 int mb_x, mb_y;
120 int mb_xy;
121 int mb_width, mb_height;
122 int mb_stride, mb_num;
123 int b_stride;
124
125 uint32_t *mb2br_xy;
126
127 int chroma_pred_mode;
128 int intra16x16_pred_mode;
129
130 int8_t intra4x4_pred_mode_cache[5 * 8];
131 int8_t (*intra4x4_pred_mode);
132
133 unsigned int top_samples_available;
134 unsigned int left_samples_available;
135
136 uint8_t *edge_emu_buffer;
137
138 DECLARE_ALIGNED(16, int16_t, mv_cache)[2][5 * 8][2];
139 DECLARE_ALIGNED(8, int8_t, ref_cache)[2][5 * 8];
140 DECLARE_ALIGNED(16, int16_t, mb)[16 * 48 * 2];
141 DECLARE_ALIGNED(16, int16_t, mb_luma_dc)[3][16 * 2];
142 DECLARE_ALIGNED(8, uint8_t, non_zero_count_cache)[15 * 8];
143 uint32_t dequant4_coeff[QP_MAX_NUM + 1][16];
144 int block_offset[2 * (16 * 3)];
145 SVQ3Frame frames[NUM_PICS];
146
147 uint32_t *mb_type_buf;
148 int16_t (*motion_val_buf)[2];
149 } SVQ3Context;
150
151 #define FULLPEL_MODE 1
152 #define HALFPEL_MODE 2
153 #define THIRDPEL_MODE 3
154 #define PREDICT_MODE 4
155
156 /* dual scan (from some older H.264 draft)
157 * o-->o-->o o
158 * | /|
159 * o o o / o
160 * | / | |/ |
161 * o o o o
162 * /
163 * o-->o-->o-->o
164 */
165 static const uint8_t svq3_scan[16] = {
166 0 + 0 * 4, 1 + 0 * 4, 2 + 0 * 4, 2 + 1 * 4,
167 2 + 2 * 4, 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4,
168 0 + 1 * 4, 0 + 2 * 4, 1 + 1 * 4, 1 + 2 * 4,
169 0 + 3 * 4, 1 + 3 * 4, 2 + 3 * 4, 3 + 3 * 4,
170 };
171
172 static const uint8_t luma_dc_zigzag_scan[16] = {
173 0 * 16 + 0 * 64, 1 * 16 + 0 * 64, 2 * 16 + 0 * 64, 0 * 16 + 2 * 64,
174 3 * 16 + 0 * 64, 0 * 16 + 1 * 64, 1 * 16 + 1 * 64, 2 * 16 + 1 * 64,
175 1 * 16 + 2 * 64, 2 * 16 + 2 * 64, 3 * 16 + 2 * 64, 0 * 16 + 3 * 64,
176 3 * 16 + 1 * 64, 1 * 16 + 3 * 64, 2 * 16 + 3 * 64, 3 * 16 + 3 * 64,
177 };
178
179 static const uint8_t svq3_pred_0[25][2] = {
180 { 0, 0 },
181 { 1, 0 }, { 0, 1 },
182 { 0, 2 }, { 1, 1 }, { 2, 0 },
183 { 3, 0 }, { 2, 1 }, { 1, 2 }, { 0, 3 },
184 { 0, 4 }, { 1, 3 }, { 2, 2 }, { 3, 1 }, { 4, 0 },
185 { 4, 1 }, { 3, 2 }, { 2, 3 }, { 1, 4 },
186 { 2, 4 }, { 3, 3 }, { 4, 2 },
187 { 4, 3 }, { 3, 4 },
188 { 4, 4 }
189 };
190
191 static const int8_t svq3_pred_1[6][6][5] = {
192 { { 2, -1, -1, -1, -1 }, { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 },
193 { 2, 1, -1, -1, -1 }, { 1, 2, -1, -1, -1 }, { 1, 2, -1, -1, -1 } },
194 { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 4, 3 }, { 0, 1, 2, 4, 3 },
195 { 0, 2, 1, 4, 3 }, { 2, 0, 1, 3, 4 }, { 0, 4, 2, 1, 3 } },
196 { { 2, 0, -1, -1, -1 }, { 2, 1, 0, 4, 3 }, { 1, 2, 4, 0, 3 },
197 { 2, 1, 0, 4, 3 }, { 2, 1, 4, 3, 0 }, { 1, 2, 4, 0, 3 } },
198 { { 2, 0, -1, -1, -1 }, { 2, 0, 1, 4, 3 }, { 1, 2, 0, 4, 3 },
199 { 2, 1, 0, 4, 3 }, { 2, 1, 3, 4, 0 }, { 2, 4, 1, 0, 3 } },
200 { { 0, 2, -1, -1, -1 }, { 0, 2, 1, 3, 4 }, { 1, 2, 3, 0, 4 },
201 { 2, 0, 1, 3, 4 }, { 2, 1, 3, 0, 4 }, { 2, 0, 4, 3, 1 } },
202 { { 0, 2, -1, -1, -1 }, { 0, 2, 4, 1, 3 }, { 1, 4, 2, 0, 3 },
203 { 4, 2, 0, 1, 3 }, { 2, 0, 1, 4, 3 }, { 4, 2, 1, 0, 3 } },
204 };
205
206 static const struct {
207 uint8_t run;
208 uint8_t level;
209 } svq3_dct_tables[2][16] = {
210 { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 2, 1 }, { 0, 2 }, { 3, 1 }, { 4, 1 }, { 5, 1 },
211 { 0, 3 }, { 1, 2 }, { 2, 2 }, { 6, 1 }, { 7, 1 }, { 8, 1 }, { 9, 1 }, { 0, 4 } },
212 { { 0, 0 }, { 0, 1 }, { 1, 1 }, { 0, 2 }, { 2, 1 }, { 0, 3 }, { 0, 4 }, { 0, 5 },
213 { 3, 1 }, { 4, 1 }, { 1, 2 }, { 1, 3 }, { 0, 6 }, { 0, 7 }, { 0, 8 }, { 0, 9 } }
214 };
215
216 static const uint32_t svq3_dequant_coeff[32] = {
217 3881, 4351, 4890, 5481, 6154, 6914, 7761, 8718,
218 9781, 10987, 12339, 13828, 15523, 17435, 19561, 21873,
219 24552, 27656, 30847, 34870, 38807, 43747, 49103, 54683,
220 61694, 68745, 77615, 89113, 100253, 109366, 126635, 141533
221 };
222
223 2537 static void svq3_luma_dc_dequant_idct_c(int16_t *output, int16_t *input, int qp)
224 {
225 2537 const unsigned qmul = svq3_dequant_coeff[qp];
226 #define stride 16
227 int i;
228 int temp[16];
229 static const uint8_t x_offset[4] = { 0, 1 * stride, 4 * stride, 5 * stride };
230
231
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 12685 for (i = 0; i < 4; i++) {
232 10148 const int z0 = 13 * (input[4 * i + 0] + input[4 * i + 2]);
233 10148 const int z1 = 13 * (input[4 * i + 0] - input[4 * i + 2]);
234 10148 const int z2 = 7 * input[4 * i + 1] - 17 * input[4 * i + 3];
235 10148 const int z3 = 17 * input[4 * i + 1] + 7 * input[4 * i + 3];
236
237 10148 temp[4 * i + 0] = z0 + z3;
238 10148 temp[4 * i + 1] = z1 + z2;
239 10148 temp[4 * i + 2] = z1 - z2;
240 10148 temp[4 * i + 3] = z0 - z3;
241 }
242
243
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 12685 for (i = 0; i < 4; i++) {
244 10148 const int offset = x_offset[i];
245 10148 const int z0 = 13 * (temp[4 * 0 + i] + temp[4 * 2 + i]);
246 10148 const int z1 = 13 * (temp[4 * 0 + i] - temp[4 * 2 + i]);
247 10148 const int z2 = 7 * temp[4 * 1 + i] - 17 * temp[4 * 3 + i];
248 10148 const int z3 = 17 * temp[4 * 1 + i] + 7 * temp[4 * 3 + i];
249
250 10148 output[stride * 0 + offset] = (int)((z0 + z3) * qmul + 0x80000) >> 20;
251 10148 output[stride * 2 + offset] = (int)((z1 + z2) * qmul + 0x80000) >> 20;
252 10148 output[stride * 8 + offset] = (int)((z1 - z2) * qmul + 0x80000) >> 20;
253 10148 output[stride * 10 + offset] = (int)((z0 - z3) * qmul + 0x80000) >> 20;
254 }
255 2537 }
256 #undef stride
257
258 4013303 static void svq3_add_idct_c(uint8_t *dst, int16_t *block,
259 int stride, int qp, int dc)
260 {
261 4013303 const int qmul = svq3_dequant_coeff[qp];
262 int i;
263
264
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 4013303 if (dc) {
265
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 998979 dc = 13 * 13 * (dc == 1 ? 1538U* block[0]
266 972885 : qmul * (block[0] >> 3) / 2);
267 998979 block[0] = 0;
268 }
269
270
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 20066515 for (i = 0; i < 4; i++) {
271 16053212 const int z0 = 13 * (block[0 + 4 * i] + block[2 + 4 * i]);
272 16053212 const int z1 = 13 * (block[0 + 4 * i] - block[2 + 4 * i]);
273 16053212 const int z2 = 7 * block[1 + 4 * i] - 17 * block[3 + 4 * i];
274 16053212 const int z3 = 17 * block[1 + 4 * i] + 7 * block[3 + 4 * i];
275
276 16053212 block[0 + 4 * i] = z0 + z3;
277 16053212 block[1 + 4 * i] = z1 + z2;
278 16053212 block[2 + 4 * i] = z1 - z2;
279 16053212 block[3 + 4 * i] = z0 - z3;
280 }
281
282
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 20066515 for (i = 0; i < 4; i++) {
283 16053212 const unsigned z0 = 13 * (block[i + 4 * 0] + block[i + 4 * 2]);
284 16053212 const unsigned z1 = 13 * (block[i + 4 * 0] - block[i + 4 * 2]);
285 16053212 const unsigned z2 = 7 * block[i + 4 * 1] - 17 * block[i + 4 * 3];
286 16053212 const unsigned z3 = 17 * block[i + 4 * 1] + 7 * block[i + 4 * 3];
287 16053212 const int rr = (dc + 0x80000u);
288
289 16053212 dst[i + stride * 0] = av_clip_uint8(dst[i + stride * 0] + ((int)((z0 + z3) * qmul + rr) >> 20));
290 16053212 dst[i + stride * 1] = av_clip_uint8(dst[i + stride * 1] + ((int)((z1 + z2) * qmul + rr) >> 20));
291 16053212 dst[i + stride * 2] = av_clip_uint8(dst[i + stride * 2] + ((int)((z1 - z2) * qmul + rr) >> 20));
292 16053212 dst[i + stride * 3] = av_clip_uint8(dst[i + stride * 3] + ((int)((z0 - z3) * qmul + rr) >> 20));
293 }
294
295 4013303 memset(block, 0, 16 * sizeof(int16_t));
296 4013303 }
297
298 3881601 static inline int svq3_decode_block(GetBitContext *gb, int16_t *block,
299 int index, const int type)
300 {
301 static const uint8_t *const scan_patterns[4] = {
302 luma_dc_zigzag_scan, ff_zigzag_scan, svq3_scan, ff_h264_chroma_dc_scan
303 };
304
305 int run, level, sign, limit;
306 unsigned vlc;
307 3881601 const int intra = 3 * type >> 2;
308 3881601 const uint8_t *const scan = scan_patterns[type];
309
310
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 5001417 for (limit = (16 >> intra); index < 16; index = limit, limit += 8) {
311
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 9818534 for (; (vlc = get_interleaved_ue_golomb(gb)) != 0; index++) {
312
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 5377025 if ((int32_t)vlc < 0)
313 ✗ return -1;
314
315
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 5377025 sign = (vlc & 1) ? 0 : -1;
316 5377025 vlc = vlc + 1 >> 1;
317
318
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 5377025 if (type == 3) {
319
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 249633 if (vlc < 3) {
320 169007 run = 0;
321 169007 level = vlc;
322
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 80626 } else if (vlc < 4) {
323 34201 run = 1;
324 34201 level = 1;
325 } else {
326 46425 run = vlc & 0x3;
327 46425 level = (vlc + 9 >> 2) - run;
328 }
329 } else {
330
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 5127392 if (vlc < 16U) {
331 5034991 run = svq3_dct_tables[intra][vlc].run;
332 5034991 level = svq3_dct_tables[intra][vlc].level;
333
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 92401 } else if (intra) {
334 8622 run = vlc & 0x7;
335
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 8622 level = (vlc >> 3) + ((run == 0) ? 8 : ((run < 2) ? 2 : ((run < 5) ? 0 : -1)));
336 } else {
337 83779 run = vlc & 0xF;
338
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 83779 level = (vlc >> 4) + ((run == 0) ? 4 : ((run < 3) ? 2 : ((run < 10) ? 1 : 0)));
339 }
340 }
341
342
343
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 5377025 if ((index += run) >= limit)
344 ✗ return -1;
345
346 5377025 block[scan[index]] = (level ^ sign) - sign;
347 }
348
349
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 4441509 if (type != 2) {
350 3321693 break;
351 }
352 }
353
354 3881601 return 0;
355 }
356
357 static av_always_inline int
358 556385 svq3_fetch_diagonal_mv(const SVQ3Context *s, const int16_t **C,
359 int i, int list, int part_width)
360 {
361 556385 const int topright_ref = s->ref_cache[list][i - 8 + part_width];
362
363
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 556385 if (topright_ref != PART_NOT_AVAILABLE) {
364 474936 *C = s->mv_cache[list][i - 8 + part_width];
365 474936 return topright_ref;
366 } else {
367 81449 *C = s->mv_cache[list][i - 8 - 1];
368 81449 return s->ref_cache[list][i - 8 - 1];
369 }
370 }
371
372 /**
373 * Get the predicted MV.
374 * @param n the block index
375 * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4)
376 * @param mx the x component of the predicted motion vector
377 * @param my the y component of the predicted motion vector
378 */
379 556385 static av_always_inline void svq3_pred_motion(const SVQ3Context *s, int n,
380 int part_width, int list,
381 int ref, int *const mx, int *const my)
382 {
383 556385 const int index8 = scan8[n];
384 556385 const int top_ref = s->ref_cache[list][index8 - 8];
385 556385 const int left_ref = s->ref_cache[list][index8 - 1];
386 556385 const int16_t *const A = s->mv_cache[list][index8 - 1];
387 556385 const int16_t *const B = s->mv_cache[list][index8 - 8];
388 const int16_t *C;
389 int diagonal_ref, match_count;
390
391 /* mv_cache
392 * B . . A T T T T
393 * U . . L . . , .
394 * U . . L . . . .
395 * U . . L . . , .
396 * . . . L . . . .
397 */
398
399 556385 diagonal_ref = svq3_fetch_diagonal_mv(s, &C, index8, list, part_width);
400 556385 match_count = (diagonal_ref == ref) + (top_ref == ref) + (left_ref == ref);
401
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 556385 if (match_count > 1) { //most common
402 532596 *mx = mid_pred(A[0], B[0], C[0]);
403 532596 *my = mid_pred(A[1], B[1], C[1]);
404
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 23789 } else if (match_count == 1) {
405
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 23789 if (left_ref == ref) {
406 23789 *mx = A[0];
407 23789 *my = A[1];
408 ✗ } else if (top_ref == ref) {
409 ✗ *mx = B[0];
410 ✗ *my = B[1];
411 } else {
412 ✗ *mx = C[0];
413 ✗ *my = C[1];
414 }
415 } else {
416 ✗ if (top_ref == PART_NOT_AVAILABLE &&
417 ✗ diagonal_ref == PART_NOT_AVAILABLE &&
418 left_ref != PART_NOT_AVAILABLE) {
419 ✗ *mx = A[0];
420 ✗ *my = A[1];
421 } else {
422 ✗ *mx = mid_pred(A[0], B[0], C[0]);
423 ✗ *my = mid_pred(A[1], B[1], C[1]);
424 }
425 }
426 556385 }
427
428 911391 static inline void svq3_mc_dir_part(SVQ3Context *s,
429 int x, int y, int width, int height,
430 int mx, int my, int dxy,
431 int thirdpel, int dir, int avg)
432 {
433
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 911391 const SVQ3Frame *pic = (dir == 0) ? s->last_pic : s->next_pic;
434 uint8_t *src, *dest;
435 911391 int i, emu = 0;
436 911391 int blocksize = 2 - (width >> 3); // 16->0, 8->1, 4->2
437 911391 int linesize = s->cur_pic->f->linesize[0];
438 911391 int uvlinesize = s->cur_pic->f->linesize[1];
439
440 911391 mx += x;
441 911391 my += y;
442
443
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 911391 if (mx < 0 || mx >= s->h_edge_pos - width - 1 ||
444
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 870282 my < 0 || my >= s->v_edge_pos - height - 1) {
445 88682 emu = 1;
446 88682 mx = av_clip(mx, -16, s->h_edge_pos - width + 15);
447 88682 my = av_clip(my, -16, s->v_edge_pos - height + 15);
448 }
449
450 /* form component predictions */
451 911391 dest = s->cur_pic->f->data[0] + x + y * linesize;
452 911391 src = pic->f->data[0] + mx + my * linesize;
453
454
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 911391 if (emu) {
455 88682 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
456 linesize, linesize,
457 width + 1, height + 1,
458 mx, my, s->h_edge_pos, s->v_edge_pos);
459 88682 src = s->edge_emu_buffer;
460 }
461
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 911391 if (thirdpel)
462 (avg ? s->tdsp.avg_tpel_pixels_tab
463
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 182 : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src, linesize,
464 width, height);
465 else
466 (avg ? s->hdsp.avg_pixels_tab
467
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 911209 : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src, linesize,
468 height);
469
470
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 911391 if (!(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {
471 911391 mx = mx + (mx < (int) x) >> 1;
472 911391 my = my + (my < (int) y) >> 1;
473 911391 width = width >> 1;
474 911391 height = height >> 1;
475 911391 blocksize++;
476
477
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✓ Branch 1 taken 911391 times.
 2734173 for (i = 1; i < 3; i++) {
478 1822782 dest = s->cur_pic->f->data[i] + (x >> 1) + (y >> 1) * uvlinesize;
479 1822782 src = pic->f->data[i] + mx + my * uvlinesize;
480
481
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 1822782 if (emu) {
482 177364 s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src,
483 uvlinesize, uvlinesize,
484 width + 1, height + 1,
485 177364 mx, my, (s->h_edge_pos >> 1),
486 177364 s->v_edge_pos >> 1);
487 177364 src = s->edge_emu_buffer;
488 }
489
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 1822782 if (thirdpel)
490 (avg ? s->tdsp.avg_tpel_pixels_tab
491
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 364 : s->tdsp.put_tpel_pixels_tab)[dxy](dest, src,
492 uvlinesize,
493 width, height);
494 else
495 (avg ? s->hdsp.avg_pixels_tab
496
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 1822418 : s->hdsp.put_pixels_tab)[blocksize][dxy](dest, src,
497 uvlinesize,
498 height);
499 }
500 }
501 911391 }
502
503 438837 static inline int svq3_mc_dir(SVQ3Context *s, int size, int mode,
504 int dir, int avg)
505 {
506 int i, j, k, mx, my, dx, dy, x, y;
507 // 0->16x16,1->8x16,2->16x8,3->8x8,4->4x8,5->8x4,6->4x4
508
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 438837 const int part_width = ((size & 5) == 4) ? 4 : 16 >> (size & 1);
509 438837 const int part_height = 16 >> ((unsigned)(size + 1) / 3);
510
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 438837 const int extra_width = (mode == PREDICT_MODE) ? -16 * 6 : 0;
511 438837 const int h_edge_pos = 6 * (s->h_edge_pos - part_width) - extra_width;
512 438837 const int v_edge_pos = 6 * (s->v_edge_pos - part_height) - extra_width;
513
514
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 917158 for (i = 0; i < 16; i += part_height)
515
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 1035744 for (j = 0; j < 16; j += part_width) {
516 557423 const int b_xy = (4 * s->mb_x + (j >> 2)) +
517 557423 (4 * s->mb_y + (i >> 2)) * s->b_stride;
518 int dxy;
519 557423 x = 16 * s->mb_x + j;
520 557423 y = 16 * s->mb_y + i;
521 557423 k = (j >> 2 & 1) + (i >> 1 & 2) +
522 557423 (j >> 1 & 4) + (i & 8);
523
524
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 557423 if (mode != PREDICT_MODE) {
525 556385 svq3_pred_motion(s, k, part_width >> 2, dir, 1, &mx, &my);
526 } else {
527 1038 mx = s->next_pic->motion_val[0][b_xy][0] * 2;
528 1038 my = s->next_pic->motion_val[0][b_xy][1] * 2;
529
530
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 1038 if (dir == 0) {
531 519 mx = mx * s->frame_num_offset /
532 519 s->prev_frame_num_offset + 1 >> 1;
533 519 my = my * s->frame_num_offset /
534 519 s->prev_frame_num_offset + 1 >> 1;
535 } else {
536 519 mx = mx * (s->frame_num_offset - s->prev_frame_num_offset) /
537 519 s->prev_frame_num_offset + 1 >> 1;
538 519 my = my * (s->frame_num_offset - s->prev_frame_num_offset) /
539 519 s->prev_frame_num_offset + 1 >> 1;
540 }
541 }
542
543 /* clip motion vector prediction to frame border */
544 557423 mx = av_clip(mx, extra_width - 6 * x, h_edge_pos - 6 * x);
545 557423 my = av_clip(my, extra_width - 6 * y, v_edge_pos - 6 * y);
546
547 /* get (optional) motion vector differential */
548
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 557423 if (mode == PREDICT_MODE) {
549 1038 dx = dy = 0;
550 } else {
551 556385 dy = get_interleaved_se_golomb(&s->gb_slice);
552 556385 dx = get_interleaved_se_golomb(&s->gb_slice);
553
554
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 556385 if (dx != (int16_t)dx || dy != (int16_t)dy) {
555 ✗ av_log(s->avctx, AV_LOG_ERROR, "invalid MV vlc\n");
556 ✗ return -1;
557 }
558 }
559
560 /* compute motion vector */
561
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 557423 if (mode == THIRDPEL_MODE) {
562 int fx, fy;
563 182 mx = (mx + 1 >> 1) + dx;
564 182 my = (my + 1 >> 1) + dy;
565 182 fx = (unsigned)(mx + 0x30000) / 3 - 0x10000;
566 182 fy = (unsigned)(my + 0x30000) / 3 - 0x10000;
567 182 dxy = (mx - 3 * fx) + 4 * (my - 3 * fy);
568
569 182 svq3_mc_dir_part(s, x, y, part_width, part_height,
570 fx, fy, dxy, 1, dir, avg);
571 182 mx += mx;
572 182 my += my;
573
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 557241 } else if (mode == HALFPEL_MODE || mode == PREDICT_MODE) {
574 276152 mx = (unsigned)(mx + 1 + 0x30000) / 3 + dx - 0x10000;
575 276152 my = (unsigned)(my + 1 + 0x30000) / 3 + dy - 0x10000;
576 276152 dxy = (mx & 1) + 2 * (my & 1);
577
578 276152 svq3_mc_dir_part(s, x, y, part_width, part_height,
579 mx >> 1, my >> 1, dxy, 0, dir, avg);
580 276152 mx *= 3;
581 276152 my *= 3;
582 } else {
583 281089 mx = (unsigned)(mx + 3 + 0x60000) / 6 + dx - 0x10000;
584 281089 my = (unsigned)(my + 3 + 0x60000) / 6 + dy - 0x10000;
585
586 281089 svq3_mc_dir_part(s, x, y, part_width, part_height,
587 mx, my, 0, 0, dir, avg);
588 281089 mx *= 6;
589 281089 my *= 6;
590 }
591
592 /* update mv_cache */
593
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 557423 if (mode != PREDICT_MODE) {
594 556385 int32_t mv = pack16to32(mx, my);
595
596
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 556385 if (part_height == 8 && i < 8) {
597 78777 AV_WN32A(s->mv_cache[dir][scan8[k] + 1 * 8], mv);
598
599
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✓ Branch 3 taken 39349 times.
 78777 if (part_width == 8 && j < 8)
600 39349 AV_WN32A(s->mv_cache[dir][scan8[k] + 1 + 1 * 8], mv);
601 }
602
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 556385 if (part_width == 8 && j < 8)
603 78810 AV_WN32A(s->mv_cache[dir][scan8[k] + 1], mv);
604
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 556385 if (part_width == 4 || part_height == 4)
605 184 AV_WN32A(s->mv_cache[dir][scan8[k]], mv);
606 }
607
608 /* write back motion vectors */
609 557423 fill_rectangle(s->cur_pic->motion_val[dir][b_xy],
610 part_width >> 2, part_height >> 2, s->b_stride,
611 pack16to32(mx, my), 4);
612 }
613
614 438837 return 0;
615 }
616
617 488580 static av_always_inline void hl_decode_mb_idct_luma(SVQ3Context *s,
618 int mb_type, const int *block_offset,
619 int linesize, uint8_t *dest_y)
620 {
621 int i;
622
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 488580 if (!IS_INTRA4x4(mb_type)) {
623
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 7489639 for (i = 0; i < 16; i++)
624
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 7049072 if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) {
625 2480354 uint8_t *const ptr = dest_y + block_offset[i];
626 2480354 svq3_add_idct_c(ptr, s->mb + i * 16, linesize,
627 2480354 s->qscale, IS_INTRA(mb_type) ? 1 : 0);
628 }
629 }
630 488580 }
631
632 50550 static av_always_inline void hl_decode_mb_predict_luma(SVQ3Context *s,
633 int mb_type,
634 const int *block_offset,
635 int linesize,
636 uint8_t *dest_y)
637 {
638 int i;
639 50550 int qscale = s->qscale;
640
641
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 50550 if (IS_INTRA4x4(mb_type)) {
642
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 816221 for (i = 0; i < 16; i++) {
643 768208 uint8_t *const ptr = dest_y + block_offset[i];
644 768208 const int dir = s->intra4x4_pred_mode_cache[scan8[i]];
645
646 uint8_t *topright;
647 int nnz;
648
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 768208 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
649 av_assert2(s->mb_y || linesize <= block_offset[i]);
650 52949 topright = ptr + 4 - linesize;
651 } else
652 715259 topright = NULL;
653
654 768208 s->hpc.pred4x4[dir](ptr, topright, linesize);
655 768208 nnz = s->non_zero_count_cache[scan8[i]];
656
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 768208 if (nnz) {
657 560064 svq3_add_idct_c(ptr, s->mb + i * 16, linesize, qscale, 0);
658 }
659 }
660 } else {
661 2537 s->hpc.pred16x16[s->intra16x16_pred_mode](dest_y, linesize);
662 2537 svq3_luma_dc_dequant_idct_c(s->mb, s->mb_luma_dc[0], qscale);
663 }
664 50550 }
665
666 488580 static void hl_decode_mb(SVQ3Context *s)
667 {
668 488580 const int mb_x = s->mb_x;
669 488580 const int mb_y = s->mb_y;
670 488580 const int mb_xy = s->mb_xy;
671 488580 const int mb_type = s->cur_pic->mb_type[mb_xy];
672 uint8_t *dest_y, *dest_cb, *dest_cr;
673 int linesize, uvlinesize;
674 int i, j;
675 488580 const int *block_offset = &s->block_offset[0];
676 488580 const int block_h = 16 >> 1;
677
678 488580 linesize = s->cur_pic->f->linesize[0];
679 488580 uvlinesize = s->cur_pic->f->linesize[1];
680
681 488580 dest_y = s->cur_pic->f->data[0] + (mb_x + mb_y * linesize) * 16;
682 488580 dest_cb = s->cur_pic->f->data[1] + mb_x * 8 + mb_y * uvlinesize * block_h;
683 488580 dest_cr = s->cur_pic->f->data[2] + mb_x * 8 + mb_y * uvlinesize * block_h;
684
685 488580 s->vdsp.prefetch(dest_y + (s->mb_x & 3) * 4 * linesize + 64, linesize, 4);
686 488580 s->vdsp.prefetch(dest_cb + (s->mb_x & 7) * uvlinesize + 64, dest_cr - dest_cb, 2);
687
688
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 488580 if (IS_INTRA(mb_type)) {
689 50550 s->hpc.pred8x8[s->chroma_pred_mode](dest_cb, uvlinesize);
690 50550 s->hpc.pred8x8[s->chroma_pred_mode](dest_cr, uvlinesize);
691
692 50550 hl_decode_mb_predict_luma(s, mb_type, block_offset, linesize, dest_y);
693 }
694
695 488580 hl_decode_mb_idct_luma(s, mb_type, block_offset, linesize, dest_y);
696
697
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 488580 if (s->cbp & 0x30) {
698 159250 uint8_t *dest[2] = { dest_cb, dest_cr };
699 159250 s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 1,
700 159250 s->dequant4_coeff[4][0]);
701 159250 s->h264dsp.h264_chroma_dc_dequant_idct(s->mb + 16 * 16 * 2,
702 159250 s->dequant4_coeff[4][0]);
703
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✓ Branch 1 taken 159250 times.
 477750 for (j = 1; j < 3; j++) {
704
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✓ Branch 1 taken 318500 times.
 1592500 for (i = j * 16; i < j * 16 + 4; i++)
705
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✓ Branch 1 taken 542368 times.
✓ Branch 2 taken 430517 times.
✓ Branch 3 taken 301115 times.
 1274000 if (s->non_zero_count_cache[scan8[i]] || s->mb[i * 16]) {
706 972885 uint8_t *const ptr = dest[j - 1] + block_offset[i];
707 972885 svq3_add_idct_c(ptr, s->mb + i * 16,
708 972885 uvlinesize, ff_h264_chroma_qp[0][s->qscale + 12] - 12, 2);
709 }
710 }
711 }
712 488580 }
713
714 842400 static int svq3_decode_mb(SVQ3Context *s, unsigned int mb_type)
715 {
716 int i, j, k, m, dir, mode;
717 842400 int cbp = 0;
718 uint32_t vlc;
719 int8_t *top, *left;
720 842400 const int mb_xy = s->mb_xy;
721 842400 const int b_xy = 4 * s->mb_x + 4 * s->mb_y * s->b_stride;
722
723
2/2
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 842400 s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
724
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✓ Branch 1 taken 800265 times.
 842400 s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
725
726
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✓ Branch 1 taken 488520 times.
 842400 if (mb_type == 0) { /* SKIP */
727
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✓ Branch 1 taken 353006 times.
 353880 if (s->pict_type == AV_PICTURE_TYPE_P ||
728
2/2
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✓ Branch 1 taken 393 times.
 874 s->next_pic->mb_type[mb_xy] == -1) {
729 353487 svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16,
730 0, 0, 0, 0, 0, 0);
731
732
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✓ Branch 1 taken 353006 times.
 353487 if (s->pict_type == AV_PICTURE_TYPE_B)
733 481 svq3_mc_dir_part(s, 16 * s->mb_x, 16 * s->mb_y, 16, 16,
734 0, 0, 0, 0, 1, 1);
735
736 353487 mb_type = MB_TYPE_SKIP;
737 } else {
738 393 mb_type = FFMIN(s->next_pic->mb_type[mb_xy], 6);
739
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 393 if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 0, 0) < 0)
740 ✗ return -1;
741
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 393 if (svq3_mc_dir(s, mb_type, PREDICT_MODE, 1, 1) < 0)
742 ✗ return -1;
743
744 393 mb_type = MB_TYPE_16x16;
745 }
746
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 488520 } else if (mb_type < 8) { /* INTER */
747
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✓ Branch 1 taken 437137 times.
✓ Branch 3 taken 129 times.
✓ Branch 4 taken 704 times.
 437970 if (s->thirdpel_flag && s->halfpel_flag == !get_bits1(&s->gb_slice))
748 129 mode = THIRDPEL_MODE;
749
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✗ Branch 1 not taken.
 437841 else if (s->halfpel_flag &&
750
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✓ Branch 2 taken 240785 times.
 437841 s->thirdpel_flag == !get_bits1(&s->gb_slice))
751 197056 mode = HALFPEL_MODE;
752 else
753 240785 mode = FULLPEL_MODE;
754
755 /* fill caches */
756 /* note ref_cache should contain here:
757 * ????????
758 * ???11111
759 * N??11111
760 * N??11111
761 * N??11111
762 */
763
764
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✓ Branch 1 taken 184 times.
 438338 for (m = 0; m < 2; m++) {
765
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✓ Branch 1 taken 16750 times.
✓ Branch 2 taken 421404 times.
✗ Branch 3 not taken.
 438154 if (s->mb_x > 0 && s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6] != -1) {
766
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 2107020 for (i = 0; i < 4; i++)
767 1685616 AV_COPY32(s->mv_cache[m][scan8[0] - 1 + i * 8],
768 s->cur_pic->motion_val[m][b_xy - 1 + i * s->b_stride]);
769 } else {
770
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 83750 for (i = 0; i < 4; i++)
771 67000 AV_ZERO32(s->mv_cache[m][scan8[0] - 1 + i * 8]);
772 }
773
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✓ Branch 1 taken 22890 times.
 438154 if (s->mb_y > 0) {
774 415264 memcpy(s->mv_cache[m][scan8[0] - 1 * 8],
775 415264 s->cur_pic->motion_val[m][b_xy - s->b_stride],
776 4 * 2 * sizeof(int16_t));
777 415264 memset(&s->ref_cache[m][scan8[0] - 1 * 8],
778
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 415264 (s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1, 4);
779
780
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 415264 if (s->mb_x < s->mb_width - 1) {
781 397026 AV_COPY32(s->mv_cache[m][scan8[0] + 4 - 1 * 8],
782 s->cur_pic->motion_val[m][b_xy - s->b_stride + 4]);
783 397026 s->ref_cache[m][scan8[0] + 4 - 1 * 8] =
784
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 397026 (s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride + 1] + 6] == -1 ||
785
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✓ Branch 1 taken 397026 times.
 397026 s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride]] == -1) ? PART_NOT_AVAILABLE : 1;
786 } else
787 18238 s->ref_cache[m][scan8[0] + 4 - 1 * 8] = PART_NOT_AVAILABLE;
788
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✓ Branch 1 taken 15833 times.
 415264 if (s->mb_x > 0) {
789 399431 AV_COPY32(s->mv_cache[m][scan8[0] - 1 - 1 * 8],
790 s->cur_pic->motion_val[m][b_xy - s->b_stride - 1]);
791 399431 s->ref_cache[m][scan8[0] - 1 - 1 * 8] =
792
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 399431 (s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] == -1) ? PART_NOT_AVAILABLE : 1;
793 } else
794 15833 s->ref_cache[m][scan8[0] - 1 - 1 * 8] = PART_NOT_AVAILABLE;
795 } else
796 22890 memset(&s->ref_cache[m][scan8[0] - 1 * 8 - 1],
797 PART_NOT_AVAILABLE, 8);
798
799
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✓ Branch 1 taken 368 times.
 438154 if (s->pict_type != AV_PICTURE_TYPE_B)
800 437786 break;
801 }
802
803 /* decode motion vector(s) and form prediction(s) */
804
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✓ Branch 1 taken 184 times.
 437970 if (s->pict_type == AV_PICTURE_TYPE_P) {
805
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 437786 if (svq3_mc_dir(s, mb_type - 1, mode, 0, 0) < 0)
806 ✗ return -1;
807 } else { /* AV_PICTURE_TYPE_B */
808
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✓ Branch 1 taken 50 times.
 184 if (mb_type != 2) {
809
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 134 if (svq3_mc_dir(s, 0, mode, 0, 0) < 0)
810 ✗ return -1;
811 } else {
812
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 250 for (i = 0; i < 4; i++)
813 200 memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride],
814 0, 4 * 2 * sizeof(int16_t));
815 }
816
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 184 if (mb_type != 1) {
817
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 131 if (svq3_mc_dir(s, 0, mode, 1, mb_type == 3) < 0)
818 ✗ return -1;
819 } else {
820
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 265 for (i = 0; i < 4; i++)
821 212 memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride],
822 0, 4 * 2 * sizeof(int16_t));
823 }
824 }
825
826 437970 mb_type = MB_TYPE_16x16;
827
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 50550 } else if (mb_type == 8 || mb_type == 33) { /* INTRA4x4 */
828 48013 int8_t *i4x4 = s->intra4x4_pred_mode + s->mb2br_xy[s->mb_xy];
829 48013 int8_t *i4x4_cache = s->intra4x4_pred_mode_cache;
830
831 48013 memset(s->intra4x4_pred_mode_cache, -1, 8 * 5 * sizeof(int8_t));
832
833
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✗ Branch 1 not taken.
 48013 if (mb_type == 8) {
834
2/2
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 48013 if (s->mb_x > 0) {
835
2/2
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 220070 for (i = 0; i < 4; i++)
836 176056 s->intra4x4_pred_mode_cache[scan8[0] - 1 + i * 8] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - 1] + 6 - i];
837
1/2
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 44014 if (s->intra4x4_pred_mode_cache[scan8[0] - 1] == -1)
838 ✗ s->left_samples_available = 0x5F5F;
839 }
840
2/2
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 48013 if (s->mb_y > 0) {
841 45104 s->intra4x4_pred_mode_cache[4 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 0];
842 45104 s->intra4x4_pred_mode_cache[5 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 1];
843 45104 s->intra4x4_pred_mode_cache[6 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 2];
844 45104 s->intra4x4_pred_mode_cache[7 + 8 * 0] = s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride] + 3];
845
846
1/2
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 45104 if (s->intra4x4_pred_mode_cache[4 + 8 * 0] == -1)
847 ✗ s->top_samples_available = 0x33FF;
848 }
849
850 /* decode prediction codes for luma blocks */
851
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 432117 for (i = 0; i < 16; i += 2) {
852 384104 vlc = get_interleaved_ue_golomb(&s->gb_slice);
853
854
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 384104 if (vlc >= 25U) {
855 ✗ av_log(s->avctx, AV_LOG_ERROR,
856 "luma prediction:%"PRIu32"\n", vlc);
857 ✗ return -1;
858 }
859
860 384104 left = &s->intra4x4_pred_mode_cache[scan8[i] - 1];
861 384104 top = &s->intra4x4_pred_mode_cache[scan8[i] - 8];
862
863 384104 left[1] = svq3_pred_1[top[0] + 1][left[0] + 1][svq3_pred_0[vlc][0]];
864 384104 left[2] = svq3_pred_1[top[1] + 1][left[1] + 1][svq3_pred_0[vlc][1]];
865
866
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 384104 if (left[1] == -1 || left[2] == -1) {
867 ✗ av_log(s->avctx, AV_LOG_ERROR, "weird prediction\n");
868 ✗ return -1;
869 }
870 }
871 } else { /* mb_type == 33, DC_128_PRED block type */
872 ✗ for (i = 0; i < 4; i++)
873 ✗ memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_PRED, 4);
874 }
875
876 48013 AV_COPY32(i4x4, i4x4_cache + 4 + 8 * 4);
877 48013 i4x4[4] = i4x4_cache[7 + 8 * 3];
878 48013 i4x4[5] = i4x4_cache[7 + 8 * 2];
879 48013 i4x4[6] = i4x4_cache[7 + 8 * 1];
880
881
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 48013 if (mb_type == 8) {
882 48013 ff_h264_check_intra4x4_pred_mode(s->intra4x4_pred_mode_cache,
883 48013 s->avctx, s->top_samples_available,
884 48013 s->left_samples_available);
885
886
2/2
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 48013 s->top_samples_available = (s->mb_y == 0) ? 0x33FF : 0xFFFF;
887
2/2
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✓ Branch 1 taken 44014 times.
 48013 s->left_samples_available = (s->mb_x == 0) ? 0x5F5F : 0xFFFF;
888 } else {
889 ✗ for (i = 0; i < 4; i++)
890 ✗ memset(&s->intra4x4_pred_mode_cache[scan8[0] + 8 * i], DC_128_PRED, 4);
891
892 ✗ s->top_samples_available = 0x33FF;
893 ✗ s->left_samples_available = 0x5F5F;
894 }
895
896 48013 mb_type = MB_TYPE_INTRA4x4;
897 } else { /* INTRA16x16 */
898 2537 dir = ff_h264_i_mb_type_info[mb_type - 8].pred_mode;
899 2537 dir = (dir >> 1) ^ 3 * (dir & 1) ^ 1;
900
901
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 2537 if ((s->intra16x16_pred_mode = ff_h264_check_intra_pred_mode(s->avctx, s->top_samples_available,
902 2537 s->left_samples_available, dir, 0)) < 0) {
903 ✗ av_log(s->avctx, AV_LOG_ERROR, "ff_h264_check_intra_pred_mode < 0\n");
904 ✗ return s->intra16x16_pred_mode;
905 }
906
907 2537 cbp = ff_h264_i_mb_type_info[mb_type - 8].cbp;
908 2537 mb_type = MB_TYPE_INTRA16x16;
909 }
910
911
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 842400 if (!IS_INTER(mb_type) && s->pict_type != AV_PICTURE_TYPE_I) {
912
2/2
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 1924335 for (i = 0; i < 4; i++)
913 1539468 memset(s->cur_pic->motion_val[0][b_xy + i * s->b_stride],
914 0, 4 * 2 * sizeof(int16_t));
915
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✓ Branch 1 taken 384364 times.
 384867 if (s->pict_type == AV_PICTURE_TYPE_B) {
916
2/2
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✓ Branch 1 taken 503 times.
 2515 for (i = 0; i < 4; i++)
917 2012 memset(s->cur_pic->motion_val[1][b_xy + i * s->b_stride],
918 0, 4 * 2 * sizeof(int16_t));
919 }
920 }
921
2/2
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✓ Branch 1 taken 48013 times.
 842400 if (!IS_INTRA4x4(mb_type)) {
922 794387 memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy], DC_PRED, 8);
923 }
924
4/4
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✓ Branch 2 taken 481 times.
✓ Branch 3 taken 353006 times.
 842400 if (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B) {
925 489394 memset(s->non_zero_count_cache + 8, 0, 14 * 8 * sizeof(uint8_t));
926 }
927
928
2/2
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✓ Branch 1 taken 2537 times.
 842400 if (!IS_INTRA16x16(mb_type) &&
929
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✓ Branch 3 taken 353006 times.
 839863 (!IS_SKIP(mb_type) || s->pict_type == AV_PICTURE_TYPE_B)) {
930
1/2
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✓ Branch 2 taken 486857 times.
 486857 if ((vlc = get_interleaved_ue_golomb(&s->gb_slice)) >= 48U){
931 ✗ av_log(s->avctx, AV_LOG_ERROR, "cbp_vlc=%"PRIu32"\n", vlc);
932 ✗ return -1;
933 }
934
935 486857 cbp = IS_INTRA(mb_type) ? ff_h264_golomb_to_intra4x4_cbp[vlc]
936
2/2
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✓ Branch 1 taken 438844 times.
 486857 : ff_h264_golomb_to_inter_cbp[vlc];
937 }
938
2/2
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✓ Branch 1 taken 2537 times.
 842400 if (IS_INTRA16x16(mb_type) ||
939
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✓ Branch 5 taken 1728 times.
 839863 (s->pict_type != AV_PICTURE_TYPE_I && s->adaptive_quant && cbp)) {
940 3233 s->qscale += get_interleaved_se_golomb(&s->gb_slice);
941
942
1/2
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✓ Branch 1 taken 3233 times.
 3233 if (s->qscale > 31u) {
943 ✗ av_log(s->avctx, AV_LOG_ERROR, "qscale:%d\n", s->qscale);
944 ✗ return -1;
945 }
946 }
947
2/2
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✓ Branch 1 taken 839863 times.
 842400 if (IS_INTRA16x16(mb_type)) {
948 2537 AV_ZERO128(s->mb_luma_dc[0] + 0);
949 2537 AV_ZERO128(s->mb_luma_dc[0] + 8);
950
1/2
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✓ Branch 2 taken 2537 times.
 2537 if (svq3_decode_block(&s->gb_slice, s->mb_luma_dc[0], 0, 1)) {
951 ✗ av_log(s->avctx, AV_LOG_ERROR,
952 "error while decoding intra luma dc\n");
953 ✗ return -1;
954 }
955 }
956
957
2/2
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 842400 if (cbp) {
958 333556 const int index = IS_INTRA16x16(mb_type) ? 1 : 0;
959
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✓ Branch 3 taken 292950 times.
 333556 const int type = ((s->qscale < 24 && IS_INTRA4x4(mb_type)) ? 2 : 1);
960
961
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 1667780 for (i = 0; i < 4; i++)
962
2/2
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 1334224 if ((cbp & (1 << i))) {
963
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 3772745 for (j = 0; j < 4; j++) {
964 3022068 k = index ? (1 * (j & 1) + 2 * (i & 1) +
965 3872 2 * (j & 2) + 4 * (i & 2))
966
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✓ Branch 1 taken 3014324 times.
 3018196 : (4 * i + j);
967 3018196 s->non_zero_count_cache[scan8[k]] = 1;
968
969
1/2
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✓ Branch 2 taken 3018196 times.
 3018196 if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], index, type)) {
970 ✗ av_log(s->avctx, AV_LOG_ERROR,
971 "error while decoding block\n");
972 ✗ return -1;
973 }
974 }
975 }
976
977
2/2
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 333556 if ((cbp & 0x30)) {
978
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 477750 for (i = 1; i < 3; ++i)
979
1/2
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 318500 if (svq3_decode_block(&s->gb_slice, &s->mb[16 * 16 * i], 0, 3)) {
980 ✗ av_log(s->avctx, AV_LOG_ERROR,
981 "error while decoding chroma dc block\n");
982 ✗ return -1;
983 }
984
985
2/2
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 159250 if ((cbp & 0x20)) {
986
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 203388 for (i = 1; i < 3; i++) {
987
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 677960 for (j = 0; j < 4; j++) {
988 542368 k = 16 * i + j;
989 542368 s->non_zero_count_cache[scan8[k]] = 1;
990
991
1/2
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 542368 if (svq3_decode_block(&s->gb_slice, &s->mb[16 * k], 1, 1)) {
992 ✗ av_log(s->avctx, AV_LOG_ERROR,
993 "error while decoding chroma ac block\n");
994 ✗ return -1;
995 }
996 }
997 }
998 }
999 }
1000 }
1001
1002 842400 s->cbp = cbp;
1003 842400 s->cur_pic->mb_type[mb_xy] = mb_type;
1004
1005
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 842400 if (IS_INTRA(mb_type))
1006 50550 s->chroma_pred_mode = ff_h264_check_intra_pred_mode(s->avctx, s->top_samples_available,
1007 50550 s->left_samples_available, DC_PRED8x8, 1);
1008
1009 842400 return 0;
1010 }
1011
1012 2809 static int svq3_decode_slice_header(AVCodecContext *avctx)
1013 {
1014 2809 SVQ3Context *s = avctx->priv_data;
1015 2809 const int mb_xy = s->mb_xy;
1016 int i, header;
1017 unsigned slice_id;
1018
1019 2809 header = get_bits(&s->gb, 8);
1020
1021
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 2809 if (((header & 0x9F) != 1 && (header & 0x9F) != 2) || (header & 0x60) == 0) {
1022 /* TODO: what? */
1023 ✗ av_log(avctx, AV_LOG_ERROR, "unsupported slice header (%02X)\n", header);
1024 ✗ return -1;
1025 } else {
1026 int slice_bits, slice_bytes, slice_length;
1027 2809 int length = header >> 5 & 3;
1028
1029 2809 slice_length = show_bits(&s->gb, 8 * length);
1030 2809 slice_bits = slice_length * 8;
1031 2809 slice_bytes = slice_length + length - 1;
1032
1033 2809 skip_bits(&s->gb, 8);
1034
1035 2809 av_fast_padded_malloc(&s->slice_buf, &s->slice_buf_size, slice_bytes);
1036
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 2809 if (!s->slice_buf)
1037 ✗ return AVERROR(ENOMEM);
1038
1039
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 2809 if (slice_bytes * 8LL > get_bits_left(&s->gb)) {
1040 ✗ av_log(avctx, AV_LOG_ERROR, "slice after bitstream end\n");
1041 ✗ return AVERROR_INVALIDDATA;
1042 }
1043 2809 memcpy(s->slice_buf, s->gb.buffer + s->gb.index / 8, slice_bytes);
1044
1045
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 2809 if (length > 0) {
1046 2809 memmove(s->slice_buf, &s->slice_buf[slice_length], length - 1);
1047 }
1048
1049
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 2809 if (s->watermark_key) {
1050 10 uint32_t header = AV_RL32(&s->slice_buf[1]);
1051 10 AV_WL32(&s->slice_buf[1], header ^ s->watermark_key);
1052 }
1053 2809 init_get_bits(&s->gb_slice, s->slice_buf, slice_bits);
1054
1055 2809 skip_bits_long(&s->gb, slice_bytes * 8);
1056 }
1057
1058
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 2809 if ((slice_id = get_interleaved_ue_golomb(&s->gb_slice)) >= 3) {
1059 ✗ av_log(s->avctx, AV_LOG_ERROR, "illegal slice type %u \n", slice_id);
1060 ✗ return -1;
1061 }
1062
1063 2809 s->slice_type = ff_h264_golomb_to_pict_type[slice_id];
1064
1065
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 2809 if ((header & 0x9F) == 2) {
1066 ✗ i = (s->mb_num < 64) ? 6 : (1 + av_log2(s->mb_num - 1));
1067 ✗ get_bits(&s->gb_slice, i);
1068
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 2809 } else if (get_bits1(&s->gb_slice)) {
1069 ✗ avpriv_report_missing_feature(s->avctx, "Media key encryption");
1070 ✗ return AVERROR_PATCHWELCOME;
1071 }
1072
1073 2809 s->slice_num = get_bits(&s->gb_slice, 8);
1074 2809 s->qscale = get_bits(&s->gb_slice, 5);
1075 2809 s->adaptive_quant = get_bits1(&s->gb_slice);
1076
1077 /* unknown fields */
1078 2809 skip_bits1(&s->gb_slice);
1079
1080
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 2809 if (s->has_watermark)
1081 10 skip_bits1(&s->gb_slice);
1082
1083 2809 skip_bits1(&s->gb_slice);
1084 2809 skip_bits(&s->gb_slice, 2);
1085
1086
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 2809 if (skip_1stop_8data_bits(&s->gb_slice) < 0)
1087 ✗ return AVERROR_INVALIDDATA;
1088
1089 /* reset intra predictors and invalidate motion vector references */
1090
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 2809 if (s->mb_x > 0) {
1091 ✗ memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - 1] + 3,
1092 -1, 4 * sizeof(int8_t));
1093 ✗ memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - s->mb_x],
1094 ✗ -1, 8 * sizeof(int8_t) * s->mb_x);
1095 }
1096
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 2809 if (s->mb_y > 0) {
1097 ✗ memset(s->intra4x4_pred_mode + s->mb2br_xy[mb_xy - s->mb_stride],
1098 ✗ -1, 8 * sizeof(int8_t) * (s->mb_width - s->mb_x));
1099
1100 ✗ if (s->mb_x > 0)
1101 ✗ s->intra4x4_pred_mode[s->mb2br_xy[mb_xy - s->mb_stride - 1] + 3] = -1;
1102 }
1103
1104 2809 return 0;
1105 }
1106
1107 8 static void init_dequant4_coeff_table(SVQ3Context *s)
1108 {
1109 int q, x;
1110 8 const int max_qp = 51;
1111
1112
2/2
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✓ Branch 1 taken 8 times.
 424 for (q = 0; q < max_qp + 1; q++) {
1113 416 int shift = ff_h264_quant_div6[q] + 2;
1114 416 int idx = ff_h264_quant_rem6[q];
1115
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 7072 for (x = 0; x < 16; x++)
1116 6656 s->dequant4_coeff[q][(x >> 2) | ((x << 2) & 0xF)] =
1117 6656 ((uint32_t)ff_h264_dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] * 16) << shift;
1118 }
1119 8 }
1120
1121 8 static av_cold int svq3_decode_extradata(AVCodecContext *avctx, SVQ3Context *s,
1122 int seqh_offset)
1123 {
1124 8 const uint8_t *extradata = avctx->extradata + seqh_offset;
1125 8 unsigned int size = AV_RB32(extradata + 4);
1126 GetBitContext gb;
1127 int ret;
1128
1129
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 8 if (size > avctx->extradata_size - seqh_offset - 8)
1130 ✗ return AVERROR_INVALIDDATA;
1131 8 extradata += 8;
1132 8 init_get_bits(&gb, extradata, size * 8);
1133
1134 /* 'frame size code' and optional 'width, height' */
1135 8 int frame_size_code = get_bits(&gb, 3);
1136 int w, h;
1137
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 8 switch (frame_size_code) {
1138 ✗ case 0:
1139 ✗ w = 160;
1140 ✗ h = 120;
1141 ✗ break;
1142 ✗ case 1:
1143 ✗ w = 128;
1144 ✗ h = 96;
1145 ✗ break;
1146 ✗ case 2:
1147 ✗ w = 176;
1148 ✗ h = 144;
1149 ✗ break;
1150 ✗ case 3:
1151 ✗ w = 352;
1152 ✗ h = 288;
1153 ✗ break;
1154 ✗ case 4:
1155 ✗ w = 704;
1156 ✗ h = 576;
1157 ✗ break;
1158 ✗ case 5:
1159 ✗ w = 240;
1160 ✗ h = 180;
1161 ✗ break;
1162 6 case 6:
1163 6 w = 320;
1164 6 h = 240;
1165 6 break;
1166 2 case 7:
1167 2 w = get_bits(&gb, 12);
1168 2 h = get_bits(&gb, 12);
1169 2 break;
1170 }
1171 8 ret = ff_set_dimensions(avctx, w, h);
1172
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 8 if (ret < 0)
1173 ✗ return ret;
1174
1175 8 s->halfpel_flag = get_bits1(&gb);
1176 8 s->thirdpel_flag = get_bits1(&gb);
1177
1178 /* unknown fields */
1179 8 int unk0 = get_bits1(&gb);
1180 8 int unk1 = get_bits1(&gb);
1181 8 int unk2 = get_bits1(&gb);
1182 8 int unk3 = get_bits1(&gb);
1183
1184 8 s->low_delay = get_bits1(&gb);
1185 8 avctx->has_b_frames = !s->low_delay;
1186
1187 /* unknown field */
1188 8 int unk4 = get_bits1(&gb);
1189
1190 8 av_log(avctx, AV_LOG_DEBUG, "Unknown fields %d %d %d %d %d\n",
1191 unk0, unk1, unk2, unk3, unk4);
1192
1193
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 8 if (skip_1stop_8data_bits(&gb) < 0)
1194 ✗ return AVERROR_INVALIDDATA;
1195
1196 8 s->has_watermark = get_bits1(&gb);
1197
1198
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 8 if (!s->has_watermark)
1199 6 return 0;
1200
1201 #if CONFIG_ZLIB
1202 2 unsigned watermark_width = get_interleaved_ue_golomb(&gb);
1203 2 unsigned watermark_height = get_interleaved_ue_golomb(&gb);
1204 2 int u1 = get_interleaved_ue_golomb(&gb);
1205 2 int u2 = get_bits(&gb, 8);
1206 2 int u3 = get_bits(&gb, 2);
1207 2 int u4 = get_interleaved_ue_golomb(&gb);
1208 2 unsigned long buf_len = watermark_width *
1209 2 watermark_height * 4;
1210 2 int offset = get_bits_count(&gb) + 7 >> 3;
1211
1212
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 4 if (watermark_height <= 0 ||
1213 2 get_bits_left(&gb) <= 0 ||
1214
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 2 (uint64_t)watermark_width * 4 > UINT_MAX / watermark_height)
1215 ✗ return AVERROR_INVALIDDATA;
1216
1217 2 av_log(avctx, AV_LOG_DEBUG, "watermark size: %ux%u\n",
1218 watermark_width, watermark_height);
1219 2 av_log(avctx, AV_LOG_DEBUG,
1220 "u1: %x u2: %x u3: %x compressed data size: %d offset: %d\n",
1221 u1, u2, u3, u4, offset);
1222
1223 2 uint8_t *buf = av_malloc(buf_len);
1224
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 2 if (!buf)
1225 ✗ return AVERROR(ENOMEM);
1226
1227
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 2 if (uncompress(buf, &buf_len, extradata + offset,
1228 2 size - offset) != Z_OK) {
1229 ✗ av_log(avctx, AV_LOG_ERROR,
1230 "could not uncompress watermark logo\n");
1231 ✗ av_free(buf);
1232 ✗ return AVERROR_EXTERNAL;
1233 }
1234 2 s->watermark_key = av_bswap16(av_crc(av_crc_get_table(AV_CRC_16_CCITT), 0, buf, buf_len));
1235
1236 2 s->watermark_key = s->watermark_key << 16 | s->watermark_key;
1237 2 av_log(avctx, AV_LOG_DEBUG,
1238 "watermark key %#"PRIx32"\n", s->watermark_key);
1239 2 av_free(buf);
1240
1241 2 return 0;
1242 #else
1243 av_log(avctx, AV_LOG_ERROR,
1244 "this svq3 file contains watermark which need zlib support compiled in\n");
1245 return AVERROR(ENOSYS);
1246 #endif
1247 }
1248
1249 8 static av_cold int svq3_decode_init(AVCodecContext *avctx)
1250 {
1251 8 SVQ3Context *s = avctx->priv_data;
1252 int m, x, y;
1253 unsigned char *extradata;
1254 int ret;
1255
1256 8 s->cur_pic = &s->frames[0];
1257 8 s->last_pic = &s->frames[1];
1258 8 s->next_pic = &s->frames[2];
1259
1260 8 s->cur_pic->f = av_frame_alloc();
1261 8 s->last_pic->f = av_frame_alloc();
1262 8 s->next_pic->f = av_frame_alloc();
1263
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 8 if (!s->cur_pic->f || !s->last_pic->f || !s->next_pic->f)
1264 ✗ return AVERROR(ENOMEM);
1265
1266 8 ff_h264dsp_init(&s->h264dsp, 8, 1);
1267 8 ff_h264_pred_init(&s->hpc, AV_CODEC_ID_SVQ3, 8, 1);
1268 8 ff_videodsp_init(&s->vdsp, 8);
1269
1270
1271 8 avctx->bits_per_raw_sample = 8;
1272
1273 8 ff_hpeldsp_init(&s->hdsp, avctx->flags);
1274 8 ff_tpeldsp_init(&s->tdsp);
1275
1276 8 avctx->pix_fmt = AV_PIX_FMT_YUVJ420P;
1277 8 avctx->color_range = AVCOL_RANGE_JPEG;
1278
1279 8 s->avctx = avctx;
1280 8 s->halfpel_flag = 1;
1281 8 s->thirdpel_flag = 1;
1282 8 s->has_watermark = 0;
1283
1284 /* prowl for the "SEQH" marker in the extradata */
1285 8 extradata = (unsigned char *)avctx->extradata;
1286
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 8 if (extradata) {
1287
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 72 for (m = 0; m + 8 < avctx->extradata_size; m++) {
1288
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 72 if (!memcmp(extradata, "SEQH", 4)) {
1289 /* if a match was found, parse the extra data */
1290 8 ret = svq3_decode_extradata(avctx, s, m);
1291
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 8 if (ret < 0)
1292 ✗ return ret;
1293 8 break;
1294 }
1295 64 extradata++;
1296 }
1297 }
1298
1299 8 s->mb_width = (avctx->width + 15) / 16;
1300 8 s->mb_height = (avctx->height + 15) / 16;
1301 8 s->mb_stride = s->mb_width + 1;
1302 8 s->mb_num = s->mb_width * s->mb_height;
1303 8 s->b_stride = 4 * s->mb_width;
1304 8 s->h_edge_pos = s->mb_width * 16;
1305 8 s->v_edge_pos = s->mb_height * 16;
1306
1307 8 const unsigned big_mb_num = s->mb_stride * (s->mb_height + 2) + 1;
1308
1309 8 s->mb_type_buf = av_calloc(big_mb_num, NUM_PICS * sizeof(*s->mb_type_buf));
1310
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 8 if (!s->mb_type_buf)
1311 ✗ return AVERROR(ENOMEM);
1312 8 uint32_t *mb_type_buf = s->mb_type_buf + 2 * s->mb_stride + 1;
1313
1314 8 const unsigned b4_stride = s->mb_width * 4 + 1;
1315 8 const unsigned b4_array_size = b4_stride * s->mb_height * 4;
1316 8 const unsigned motion_val_buf_size = b4_array_size + 4;
1317
1318 8 s->motion_val_buf = av_calloc(motion_val_buf_size,
1319 NUM_PICS * 2 * sizeof(*s->motion_val_buf));
1320
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 8 if (!s->motion_val_buf)
1321 ✗ return AVERROR(ENOMEM);
1322 8 int16_t (*motion_val_buf)[2] = s->motion_val_buf + 4;
1323
1324
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 32 for (size_t i = 0; i < NUM_PICS; ++i) {
1325 24 SVQ3Frame *const pic = &s->frames[i];
1326
1327 24 pic->mb_type = mb_type_buf;
1328 24 mb_type_buf += big_mb_num;
1329
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 72 for (size_t j = 0; j < FF_ARRAY_ELEMS(pic->motion_val); ++j) {
1330 48 pic->motion_val[j] = motion_val_buf;
1331 48 motion_val_buf += motion_val_buf_size;
1332 }
1333 }
1334
1335 8 s->intra4x4_pred_mode = av_mallocz(s->mb_stride * 2 * 8);
1336
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 8 if (!s->intra4x4_pred_mode)
1337 ✗ return AVERROR(ENOMEM);
1338
1339 8 s->mb2br_xy = av_mallocz(s->mb_stride * (s->mb_height + 1) *
1340 sizeof(*s->mb2br_xy));
1341
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 8 if (!s->mb2br_xy)
1342 ✗ return AVERROR(ENOMEM);
1343
1344
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 128 for (y = 0; y < s->mb_height; y++)
1345
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 2460 for (x = 0; x < s->mb_width; x++) {
1346 2340 const int mb_xy = x + y * s->mb_stride;
1347
1348 2340 s->mb2br_xy[mb_xy] = 8 * (mb_xy % (2 * s->mb_stride));
1349 }
1350
1351 8 init_dequant4_coeff_table(s);
1352
1353 8 return 0;
1354 }
1355
1356 2809 static int get_buffer(AVCodecContext *avctx, SVQ3Frame *pic)
1357 {
1358 2809 SVQ3Context *s = avctx->priv_data;
1359 2809 int ret = ff_get_buffer(avctx, pic->f,
1360 2809 (s->pict_type != AV_PICTURE_TYPE_B) ?
1361 AV_GET_BUFFER_FLAG_REF : 0);
1362
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 2809 if (ret < 0)
1363 ✗ return ret;
1364
1365
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 2809 if (!s->edge_emu_buffer) {
1366 4 s->edge_emu_buffer = av_calloc(pic->f->linesize[0], 17);
1367
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 4 if (!s->edge_emu_buffer)
1368 ✗ return AVERROR(ENOMEM);
1369 }
1370
1371 2809 return 0;
1372 }
1373
1374 ✗ static av_cold int alloc_dummy_frame(AVCodecContext *avctx, SVQ3Frame *pic)
1375 {
1376 ✗ av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n");
1377 ✗ av_frame_unref(pic->f);
1378 ✗ int ret = get_buffer(avctx, pic);
1379 ✗ if (ret < 0)
1380 ✗ return ret;
1381
1382 ✗ memset(pic->f->data[0], 0, avctx->height * pic->f->linesize[0]);
1383 ✗ memset(pic->f->data[1], 0x80, (avctx->height / 2) *
1384 ✗ pic->f->linesize[1]);
1385 ✗ memset(pic->f->data[2], 0x80, (avctx->height / 2) *
1386 ✗ pic->f->linesize[2]);
1387
1388 ✗ return 0;
1389 }
1390
1391 2815 static int svq3_decode_frame(AVCodecContext *avctx, AVFrame *rframe,
1392 int *got_frame, AVPacket *avpkt)
1393 {
1394 2815 SVQ3Context *s = avctx->priv_data;
1395 2815 int buf_size = avpkt->size;
1396 int left;
1397 int ret, m, i;
1398
1399 /* special case for last picture */
1400
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 2815 if (buf_size == 0) {
1401
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 6 if (s->next_pic->f->data[0] && !s->low_delay) {
1402 3 av_frame_move_ref(rframe, s->next_pic->f);
1403 3 *got_frame = 1;
1404 }
1405 6 return 0;
1406 }
1407
1408 2809 s->mb_x = s->mb_y = s->mb_xy = 0;
1409
1410 2809 ret = init_get_bits8(&s->gb, avpkt->data, avpkt->size);
1411
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 2809 if (ret < 0)
1412 ✗ return ret;
1413
1414 2809 ret = svq3_decode_slice_header(avctx);
1415
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 2809 if (ret < 0)
1416 ✗ return ret;
1417
1418
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 2809 if (avpkt->size < s->mb_width * s->mb_height / 8)
1419 ✗ return AVERROR_INVALIDDATA;
1420
1421 2809 s->pict_type = s->slice_type;
1422
1423
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 2809 if (s->pict_type != AV_PICTURE_TYPE_B)
1424 2805 FFSWAP(SVQ3Frame*, s->next_pic, s->last_pic);
1425
1426 2809 av_frame_unref(s->cur_pic->f);
1427
1428 /* for skipping the frame */
1429 2809 s->cur_pic->f->pict_type = s->pict_type;
1430
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 2809 if (s->pict_type == AV_PICTURE_TYPE_I)
1431 64 s->cur_pic->f->flags |= AV_FRAME_FLAG_KEY;
1432 else
1433 2745 s->cur_pic->f->flags &= ~AV_FRAME_FLAG_KEY;
1434
1435 2809 ret = get_buffer(avctx, s->cur_pic);
1436
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 2809 if (ret < 0)
1437 ✗ return ret;
1438
1439
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 47753 for (i = 0; i < 16; i++) {
1440 44944 s->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * s->cur_pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
1441 44944 s->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * s->cur_pic->f->linesize[0] * ((scan8[i] - scan8[0]) >> 3);
1442 }
1443
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 47753 for (i = 0; i < 16; i++) {
1444 44944 s->block_offset[16 + i] =
1445 44944 s->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 4 * s->cur_pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
1446 44944 s->block_offset[48 + 16 + i] =
1447 44944 s->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7)) + 8 * s->cur_pic->f->linesize[1] * ((scan8[i] - scan8[0]) >> 3);
1448 }
1449
1450
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 2809 if (s->pict_type != AV_PICTURE_TYPE_I) {
1451
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 2745 if (!s->last_pic->f->data[0]) {
1452 ✗ ret = alloc_dummy_frame(avctx, s->last_pic);
1453 ✗ if (ret < 0)
1454 ✗ return ret;
1455 }
1456
1457
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 2745 if (s->pict_type == AV_PICTURE_TYPE_B && !s->next_pic->f->data[0]) {
1458 ✗ ret = alloc_dummy_frame(avctx, s->next_pic);
1459 ✗ if (ret < 0)
1460 ✗ return ret;
1461 }
1462 }
1463
1464
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 2809 if (avctx->debug & FF_DEBUG_PICT_INFO)
1465 ✗ av_log(s->avctx, AV_LOG_DEBUG,
1466 "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",
1467 ✗ av_get_picture_type_char(s->pict_type),
1468 s->halfpel_flag, s->thirdpel_flag,
1469 s->adaptive_quant, s->qscale, s->slice_num);
1470
1471
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 2809 if (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B ||
1472
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 2809 avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I ||
1473
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 2809 avctx->skip_frame >= AVDISCARD_ALL)
1474 ✗ return 0;
1475
1476
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 2809 if (s->pict_type == AV_PICTURE_TYPE_B) {
1477 4 s->frame_num_offset = s->slice_num - s->prev_frame_num;
1478
1479
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 4 if (s->frame_num_offset < 0)
1480 ✗ s->frame_num_offset += 256;
1481
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 4 if (s->frame_num_offset == 0 ||
1482
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 4 s->frame_num_offset >= s->prev_frame_num_offset) {
1483 ✗ av_log(s->avctx, AV_LOG_ERROR, "error in B-frame picture id\n");
1484 ✗ return -1;
1485 }
1486 } else {
1487 2805 s->prev_frame_num = s->frame_num;
1488 2805 s->frame_num = s->slice_num;
1489 2805 s->prev_frame_num_offset = s->frame_num - s->prev_frame_num;
1490
1491
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 2805 if (s->prev_frame_num_offset < 0)
1492 10 s->prev_frame_num_offset += 256;
1493 }
1494
1495
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 8427 for (m = 0; m < 2; m++) {
1496 int i;
1497
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 28090 for (i = 0; i < 4; i++) {
1498 int j;
1499
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 134832 for (j = -1; j < 4; j++)
1500 112360 s->ref_cache[m][scan8[0] + 8 * i + j] = 1;
1501
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 22472 if (i < 3)
1502 16854 s->ref_cache[m][scan8[0] + 8 * i + j] = PART_NOT_AVAILABLE;
1503 }
1504 }
1505
1506
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 44944 for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {
1507
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 884535 for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {
1508 unsigned mb_type;
1509 842400 s->mb_xy = s->mb_x + s->mb_y * s->mb_stride;
1510
1511
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 842400 if ((get_bits_left(&s->gb_slice)) <= 7) {
1512
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 7694 if (((get_bits_count(&s->gb_slice) & 7) == 0 ||
1513 3847 show_bits(&s->gb_slice, get_bits_left(&s->gb_slice) & 7) == 0)) {
1514
1515 ✗ ret = svq3_decode_slice_header(avctx);
1516 ✗ if (ret < 0)
1517 ✗ return ret;
1518 }
1519
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 3847 if (s->slice_type != s->pict_type) {
1520 ✗ avpriv_request_sample(avctx, "non constant slice type");
1521 }
1522 /* TODO: support s->mb_skip_run */
1523 }
1524
1525 842400 mb_type = get_interleaved_ue_golomb(&s->gb_slice);
1526
1527
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 842400 if (s->pict_type == AV_PICTURE_TYPE_I)
1528 19170 mb_type += 8;
1529
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 823230 else if (s->pict_type == AV_PICTURE_TYPE_B && mb_type >= 4)
1530 22 mb_type += 4;
1531
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 842400 if (mb_type > 33 || svq3_decode_mb(s, mb_type)) {
1532 ✗ av_log(s->avctx, AV_LOG_ERROR,
1533 "error while decoding MB %d %d\n", s->mb_x, s->mb_y);
1534 ✗ return -1;
1535 }
1536
1537
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 842400 if (mb_type != 0 || s->cbp)
1538 488580 hl_decode_mb(s);
1539
1540
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 842400 if (s->pict_type != AV_PICTURE_TYPE_B && !s->low_delay)
1541 841320 s->cur_pic->mb_type[s->mb_x + s->mb_y * s->mb_stride] =
1542
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 841320 (s->pict_type == AV_PICTURE_TYPE_P && mb_type < 8) ? (mb_type - 1) : -1;
1543 }
1544
1545 42135 ff_draw_horiz_band(avctx, s->cur_pic->f,
1546 42075 s->last_pic->f->data[0] ? s->last_pic->f : NULL,
1547
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 42135 16 * s->mb_y, 16, PICT_FRAME, 0,
1548 s->low_delay);
1549 }
1550
1551 2809 left = buf_size*8 - get_bits_count(&s->gb_slice);
1552
1553
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 2809 if (s->mb_y != s->mb_height || s->mb_x != s->mb_width) {
1554 ✗ av_log(avctx, AV_LOG_INFO, "frame num %"PRId64" incomplete pic x %d y %d left %d\n", avctx->frame_num, s->mb_y, s->mb_x, left);
1555 //av_hex_dump(stderr, buf+buf_size-8, 8);
1556 }
1557
1558
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 2809 if (left < 0) {
1559 ✗ av_log(avctx, AV_LOG_ERROR, "frame num %"PRId64" left %d\n", avctx->frame_num, left);
1560 ✗ return -1;
1561 }
1562
1563
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 2809 if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay)
1564 4 ret = av_frame_ref(rframe, s->cur_pic->f);
1565
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 2805 else if (s->last_pic->f->data[0])
1566 2801 ret = av_frame_ref(rframe, s->last_pic->f);
1567
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 2809 if (ret < 0)
1568 ✗ return ret;
1569
1570 /* Do not output the last pic after seeking. */
1571
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 2809 if (s->last_pic->f->data[0] || s->low_delay)
1572 2805 *got_frame = 1;
1573
1574
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 2809 if (s->pict_type != AV_PICTURE_TYPE_B) {
1575 2805 FFSWAP(SVQ3Frame*, s->cur_pic, s->next_pic);
1576 } else {
1577 4 av_frame_unref(s->cur_pic->f);
1578 }
1579
1580 2809 return buf_size;
1581 }
1582
1583 8 static av_cold int svq3_decode_end(AVCodecContext *avctx)
1584 {
1585 8 SVQ3Context *s = avctx->priv_data;
1586
1587
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 32 for (int i = 0; i < NUM_PICS; i++)
1588 24 av_frame_free(&s->frames[i].f);
1589 8 av_freep(&s->motion_val_buf);
1590 8 av_freep(&s->mb_type_buf);
1591 8 av_freep(&s->slice_buf);
1592 8 av_freep(&s->intra4x4_pred_mode);
1593 8 av_freep(&s->edge_emu_buffer);
1594 8 av_freep(&s->mb2br_xy);
1595
1596 8 return 0;
1597 }
1598
1599 const FFCodec ff_svq3_decoder = {
1600 .p.name = "svq3",
1601 CODEC_LONG_NAME("Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3"),
1602 .p.type = AVMEDIA_TYPE_VIDEO,
1603 .p.id = AV_CODEC_ID_SVQ3,
1604 .priv_data_size = sizeof(SVQ3Context),
1605 .init = svq3_decode_init,
1606 .close = svq3_decode_end,
1607 FF_CODEC_DECODE_CB(svq3_decode_frame),
1608 .p.capabilities = AV_CODEC_CAP_DRAW_HORIZ_BAND |
1609 AV_CODEC_CAP_DR1 |
1610 AV_CODEC_CAP_DELAY,
1611 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
1612 };
1613