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1 | /* |
2 | * Apple ProRes encoder | |
3 | * | |
4 | * Copyright (c) 2012 Konstantin Shishkov | |
5 | * | |
6 | * This encoder appears to be based on Anatoliy Wassermans considering | |
7 | * similarities in the bugs. | |
8 | * | |
9 | * This file is part of FFmpeg. | |
10 | * | |
11 | * FFmpeg is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU Lesser General Public | |
13 | * License as published by the Free Software Foundation; either | |
14 | * version 2.1 of the License, or (at your option) any later version. | |
15 | * | |
16 | * FFmpeg is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
19 | * Lesser General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU Lesser General Public | |
22 | * License along with FFmpeg; if not, write to the Free Software | |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
24 | */ | |
25 | ||
26 | #include "libavutil/opt.h" | |
27 | #include "libavutil/pixdesc.h" | |
28 | #include "avcodec.h" | |
29 | #include "fdctdsp.h" | |
30 | #include "put_bits.h" | |
31 | #include "bytestream.h" | |
32 | #include "internal.h" | |
33 | #include "proresdata.h" | |
34 | ||
35 | #define CFACTOR_Y422 2 | |
36 | #define CFACTOR_Y444 3 | |
37 | ||
38 | #define MAX_MBS_PER_SLICE 8 | |
39 | ||
40 | #define MAX_PLANES 4 | |
41 | ||
42 | enum { | |
43 | PRORES_PROFILE_AUTO = -1, | |
44 | PRORES_PROFILE_PROXY = 0, | |
45 | PRORES_PROFILE_LT, | |
46 | PRORES_PROFILE_STANDARD, | |
47 | PRORES_PROFILE_HQ, | |
48 | PRORES_PROFILE_4444, | |
49 | }; | |
50 | ||
51 | enum { | |
52 | QUANT_MAT_PROXY = 0, | |
53 | QUANT_MAT_LT, | |
54 | QUANT_MAT_STANDARD, | |
55 | QUANT_MAT_HQ, | |
56 | QUANT_MAT_DEFAULT, | |
57 | }; | |
58 | ||
59 | static const uint8_t prores_quant_matrices[][64] = { | |
60 | { // proxy | |
61 | 4, 7, 9, 11, 13, 14, 15, 63, | |
62 | 7, 7, 11, 12, 14, 15, 63, 63, | |
63 | 9, 11, 13, 14, 15, 63, 63, 63, | |
64 | 11, 11, 13, 14, 63, 63, 63, 63, | |
65 | 11, 13, 14, 63, 63, 63, 63, 63, | |
66 | 13, 14, 63, 63, 63, 63, 63, 63, | |
67 | 13, 63, 63, 63, 63, 63, 63, 63, | |
68 | 63, 63, 63, 63, 63, 63, 63, 63, | |
69 | }, | |
70 | { // LT | |
71 | 4, 5, 6, 7, 9, 11, 13, 15, | |
72 | 5, 5, 7, 8, 11, 13, 15, 17, | |
73 | 6, 7, 9, 11, 13, 15, 15, 17, | |
74 | 7, 7, 9, 11, 13, 15, 17, 19, | |
75 | 7, 9, 11, 13, 14, 16, 19, 23, | |
76 | 9, 11, 13, 14, 16, 19, 23, 29, | |
77 | 9, 11, 13, 15, 17, 21, 28, 35, | |
78 | 11, 13, 16, 17, 21, 28, 35, 41, | |
79 | }, | |
80 | { // standard | |
81 | 4, 4, 5, 5, 6, 7, 7, 9, | |
82 | 4, 4, 5, 6, 7, 7, 9, 9, | |
83 | 5, 5, 6, 7, 7, 9, 9, 10, | |
84 | 5, 5, 6, 7, 7, 9, 9, 10, | |
85 | 5, 6, 7, 7, 8, 9, 10, 12, | |
86 | 6, 7, 7, 8, 9, 10, 12, 15, | |
87 | 6, 7, 7, 9, 10, 11, 14, 17, | |
88 | 7, 7, 9, 10, 11, 14, 17, 21, | |
89 | }, | |
90 | { // high quality | |
91 | 4, 4, 4, 4, 4, 4, 4, 4, | |
92 | 4, 4, 4, 4, 4, 4, 4, 4, | |
93 | 4, 4, 4, 4, 4, 4, 4, 4, | |
94 | 4, 4, 4, 4, 4, 4, 4, 5, | |
95 | 4, 4, 4, 4, 4, 4, 5, 5, | |
96 | 4, 4, 4, 4, 4, 5, 5, 6, | |
97 | 4, 4, 4, 4, 5, 5, 6, 7, | |
98 | 4, 4, 4, 4, 5, 6, 7, 7, | |
99 | }, | |
100 | { // codec default | |
101 | 4, 4, 4, 4, 4, 4, 4, 4, | |
102 | 4, 4, 4, 4, 4, 4, 4, 4, | |
103 | 4, 4, 4, 4, 4, 4, 4, 4, | |
104 | 4, 4, 4, 4, 4, 4, 4, 4, | |
105 | 4, 4, 4, 4, 4, 4, 4, 4, | |
106 | 4, 4, 4, 4, 4, 4, 4, 4, | |
107 | 4, 4, 4, 4, 4, 4, 4, 4, | |
108 | 4, 4, 4, 4, 4, 4, 4, 4, | |
109 | }, | |
110 | }; | |
111 | ||
112 | #define NUM_MB_LIMITS 4 | |
113 | static const int prores_mb_limits[NUM_MB_LIMITS] = { | |
114 | 1620, // up to 720x576 | |
115 | 2700, // up to 960x720 | |
116 | 6075, // up to 1440x1080 | |
117 | 9216, // up to 2048x1152 | |
118 | }; | |
119 | ||
120 | static const struct prores_profile { | |
121 | const char *full_name; | |
122 | uint32_t tag; | |
123 | int min_quant; | |
124 | int max_quant; | |
125 | int br_tab[NUM_MB_LIMITS]; | |
126 | int quant; | |
127 | } prores_profile_info[5] = { | |
128 | { | |
129 | .full_name = "proxy", | |
130 | .tag = MKTAG('a', 'p', 'c', 'o'), | |
131 | .min_quant = 4, | |
132 | .max_quant = 8, | |
133 | .br_tab = { 300, 242, 220, 194 }, | |
134 | .quant = QUANT_MAT_PROXY, | |
135 | }, | |
136 | { | |
137 | .full_name = "LT", | |
138 | .tag = MKTAG('a', 'p', 'c', 's'), | |
139 | .min_quant = 1, | |
140 | .max_quant = 9, | |
141 | .br_tab = { 720, 560, 490, 440 }, | |
142 | .quant = QUANT_MAT_LT, | |
143 | }, | |
144 | { | |
145 | .full_name = "standard", | |
146 | .tag = MKTAG('a', 'p', 'c', 'n'), | |
147 | .min_quant = 1, | |
148 | .max_quant = 6, | |
149 | .br_tab = { 1050, 808, 710, 632 }, | |
150 | .quant = QUANT_MAT_STANDARD, | |
151 | }, | |
152 | { | |
153 | .full_name = "high quality", | |
154 | .tag = MKTAG('a', 'p', 'c', 'h'), | |
155 | .min_quant = 1, | |
156 | .max_quant = 6, | |
157 | .br_tab = { 1566, 1216, 1070, 950 }, | |
158 | .quant = QUANT_MAT_HQ, | |
159 | }, | |
160 | { | |
161 | .full_name = "4444", | |
162 | .tag = MKTAG('a', 'p', '4', 'h'), | |
163 | .min_quant = 1, | |
164 | .max_quant = 6, | |
165 | .br_tab = { 2350, 1828, 1600, 1425 }, | |
166 | .quant = QUANT_MAT_HQ, | |
167 | } | |
168 | }; | |
169 | ||
170 | #define TRELLIS_WIDTH 16 | |
171 | #define SCORE_LIMIT INT_MAX / 2 | |
172 | ||
173 | struct TrellisNode { | |
174 | int prev_node; | |
175 | int quant; | |
176 | int bits; | |
177 | int score; | |
178 | }; | |
179 | ||
180 | #define MAX_STORED_Q 16 | |
181 | ||
182 | typedef struct ProresThreadData { | |
183 | DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE]; | |
184 | DECLARE_ALIGNED(16, uint16_t, emu_buf)[16 * 16]; | |
185 | int16_t custom_q[64]; | |
186 | struct TrellisNode *nodes; | |
187 | } ProresThreadData; | |
188 | ||
189 | typedef struct ProresContext { | |
190 | AVClass *class; | |
191 | DECLARE_ALIGNED(16, int16_t, blocks)[MAX_PLANES][64 * 4 * MAX_MBS_PER_SLICE]; | |
192 | DECLARE_ALIGNED(16, uint16_t, emu_buf)[16*16]; | |
193 | int16_t quants[MAX_STORED_Q][64]; | |
194 | int16_t custom_q[64]; | |
195 | const uint8_t *quant_mat; | |
196 | const uint8_t *scantable; | |
197 | ||
198 | void (*fdct)(FDCTDSPContext *fdsp, const uint16_t *src, | |
199 | int linesize, int16_t *block); | |
200 | FDCTDSPContext fdsp; | |
201 | ||
202 | int mb_width, mb_height; | |
203 | int mbs_per_slice; | |
204 | int num_chroma_blocks, chroma_factor; | |
205 | int slices_width; | |
206 | int slices_per_picture; | |
207 | int pictures_per_frame; // 1 for progressive, 2 for interlaced | |
208 | int cur_picture_idx; | |
209 | int num_planes; | |
210 | int bits_per_mb; | |
211 | int force_quant; | |
212 | int alpha_bits; | |
213 | int warn; | |
214 | ||
215 | char *vendor; | |
216 | int quant_sel; | |
217 | ||
218 | int frame_size_upper_bound; | |
219 | ||
220 | int profile; | |
221 | const struct prores_profile *profile_info; | |
222 | ||
223 | int *slice_q; | |
224 | ||
225 | ProresThreadData *tdata; | |
226 | } ProresContext; | |
227 | ||
228 | static void get_slice_data(ProresContext *ctx, const uint16_t *src, | |
229 | int linesize, int x, int y, int w, int h, | |
230 | int16_t *blocks, uint16_t *emu_buf, | |
231 | int mbs_per_slice, int blocks_per_mb, int is_chroma) | |
232 | { | |
233 | const uint16_t *esrc; | |
234 | const int mb_width = 4 * blocks_per_mb; | |
235 | int elinesize; | |
236 | int i, j, k; | |
237 | ||
238 | for (i = 0; i < mbs_per_slice; i++, src += mb_width) { | |
239 | if (x >= w) { | |
240 | memset(blocks, 0, 64 * (mbs_per_slice - i) * blocks_per_mb | |
241 | * sizeof(*blocks)); | |
242 | return; | |
243 | } | |
244 | if (x + mb_width <= w && y + 16 <= h) { | |
245 | esrc = src; | |
246 | elinesize = linesize; | |
247 | } else { | |
248 | int bw, bh, pix; | |
249 | ||
250 | esrc = emu_buf; | |
251 | elinesize = 16 * sizeof(*emu_buf); | |
252 | ||
253 | bw = FFMIN(w - x, mb_width); | |
254 | bh = FFMIN(h - y, 16); | |
255 | ||
256 | for (j = 0; j < bh; j++) { | |
257 | memcpy(emu_buf + j * 16, | |
258 | (const uint8_t*)src + j * linesize, | |
259 | bw * sizeof(*src)); | |
260 | pix = emu_buf[j * 16 + bw - 1]; | |
261 | for (k = bw; k < mb_width; k++) | |
262 | emu_buf[j * 16 + k] = pix; | |
263 | } | |
264 | for (; j < 16; j++) | |
265 | memcpy(emu_buf + j * 16, | |
266 | emu_buf + (bh - 1) * 16, | |
267 | mb_width * sizeof(*emu_buf)); | |
268 | } | |
269 | if (!is_chroma) { | |
270 | ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks); | |
271 | blocks += 64; | |
272 | if (blocks_per_mb > 2) { | |
273 | ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks); | |
274 | blocks += 64; | |
275 | } | |
276 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks); | |
277 | blocks += 64; | |
278 | if (blocks_per_mb > 2) { | |
279 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks); | |
280 | blocks += 64; | |
281 | } | |
282 | } else { | |
283 | ctx->fdct(&ctx->fdsp, esrc, elinesize, blocks); | |
284 | blocks += 64; | |
285 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4, elinesize, blocks); | |
286 | blocks += 64; | |
287 | if (blocks_per_mb > 2) { | |
288 | ctx->fdct(&ctx->fdsp, esrc + 8, elinesize, blocks); | |
289 | blocks += 64; | |
290 | ctx->fdct(&ctx->fdsp, esrc + elinesize * 4 + 8, elinesize, blocks); | |
291 | blocks += 64; | |
292 | } | |
293 | } | |
294 | ||
295 | x += mb_width; | |
296 | } | |
297 | } | |
298 | ||
299 | static void get_alpha_data(ProresContext *ctx, const uint16_t *src, | |
300 | int linesize, int x, int y, int w, int h, | |
301 | int16_t *blocks, int mbs_per_slice, int abits) | |
302 | { | |
303 | const int slice_width = 16 * mbs_per_slice; | |
304 | int i, j, copy_w, copy_h; | |
305 | ||
306 | copy_w = FFMIN(w - x, slice_width); | |
307 | copy_h = FFMIN(h - y, 16); | |
308 | for (i = 0; i < copy_h; i++) { | |
309 | memcpy(blocks, src, copy_w * sizeof(*src)); | |
310 | if (abits == 8) | |
311 | for (j = 0; j < copy_w; j++) | |
312 | blocks[j] >>= 2; | |
313 | else | |
314 | for (j = 0; j < copy_w; j++) | |
315 | blocks[j] = (blocks[j] << 6) | (blocks[j] >> 4); | |
316 | for (j = copy_w; j < slice_width; j++) | |
317 | blocks[j] = blocks[copy_w - 1]; | |
318 | blocks += slice_width; | |
319 | src += linesize >> 1; | |
320 | } | |
321 | for (; i < 16; i++) { | |
322 | memcpy(blocks, blocks - slice_width, slice_width * sizeof(*blocks)); | |
323 | blocks += slice_width; | |
324 | } | |
325 | } | |
326 | ||
327 | /** | |
328 | * Write an unsigned rice/exp golomb codeword. | |
329 | */ | |
330 | static inline void encode_vlc_codeword(PutBitContext *pb, unsigned codebook, int val) | |
331 | { | |
332 | unsigned int rice_order, exp_order, switch_bits, switch_val; | |
333 | int exponent; | |
334 | ||
335 | /* number of prefix bits to switch between Rice and expGolomb */ | |
336 | switch_bits = (codebook & 3) + 1; | |
337 | rice_order = codebook >> 5; /* rice code order */ | |
338 | exp_order = (codebook >> 2) & 7; /* exp golomb code order */ | |
339 | ||
340 | switch_val = switch_bits << rice_order; | |
341 | ||
342 | if (val >= switch_val) { | |
343 | val -= switch_val - (1 << exp_order); | |
344 | exponent = av_log2(val); | |
345 | ||
346 | put_bits(pb, exponent - exp_order + switch_bits, 0); | |
347 | put_bits(pb, exponent + 1, val); | |
348 | } else { | |
349 | exponent = val >> rice_order; | |
350 | ||
351 | if (exponent) | |
352 | put_bits(pb, exponent, 0); | |
353 | put_bits(pb, 1, 1); | |
354 | if (rice_order) | |
355 | put_sbits(pb, rice_order, val); | |
356 | } | |
357 | } | |
358 | ||
359 | #define GET_SIGN(x) ((x) >> 31) | |
360 | #define MAKE_CODE(x) (((x) << 1) ^ GET_SIGN(x)) | |
361 | ||
362 | static void encode_dcs(PutBitContext *pb, int16_t *blocks, | |
363 | int blocks_per_slice, int scale) | |
364 | { | |
365 | int i; | |
366 | int codebook = 3, code, dc, prev_dc, delta, sign, new_sign; | |
367 | ||
368 | prev_dc = (blocks[0] - 0x4000) / scale; | |
369 | encode_vlc_codeword(pb, FIRST_DC_CB, MAKE_CODE(prev_dc)); | |
370 | sign = 0; | |
371 | codebook = 3; | |
372 | blocks += 64; | |
373 | ||
374 | for (i = 1; i < blocks_per_slice; i++, blocks += 64) { | |
375 | dc = (blocks[0] - 0x4000) / scale; | |
376 | delta = dc - prev_dc; | |
377 | new_sign = GET_SIGN(delta); | |
378 | delta = (delta ^ sign) - sign; | |
379 | code = MAKE_CODE(delta); | |
380 | encode_vlc_codeword(pb, ff_prores_dc_codebook[codebook], code); | |
381 | codebook = (code + (code & 1)) >> 1; | |
382 | codebook = FFMIN(codebook, 3); | |
383 | sign = new_sign; | |
384 | prev_dc = dc; | |
385 | } | |
386 | } | |
387 | ||
388 | static void encode_acs(PutBitContext *pb, int16_t *blocks, | |
389 | int blocks_per_slice, | |
390 | int plane_size_factor, | |
391 | const uint8_t *scan, const int16_t *qmat) | |
392 | { | |
393 | int idx, i; | |
394 | int run, level, run_cb, lev_cb; | |
395 | int max_coeffs, abs_level; | |
396 | ||
397 | max_coeffs = blocks_per_slice << 6; | |
398 | run_cb = ff_prores_run_to_cb_index[4]; | |
399 | lev_cb = ff_prores_lev_to_cb_index[2]; | |
400 | run = 0; | |
401 | ||
402 | for (i = 1; i < 64; i++) { | |
403 | for (idx = scan[i]; idx < max_coeffs; idx += 64) { | |
404 | level = blocks[idx] / qmat[scan[i]]; | |
405 | if (level) { | |
406 | abs_level = FFABS(level); | |
407 | encode_vlc_codeword(pb, ff_prores_ac_codebook[run_cb], run); | |
408 | encode_vlc_codeword(pb, ff_prores_ac_codebook[lev_cb], | |
409 | abs_level - 1); | |
410 | put_sbits(pb, 1, GET_SIGN(level)); | |
411 | ||
412 | run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)]; | |
413 | lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)]; | |
414 | run = 0; | |
415 | } else { | |
416 | run++; | |
417 | } | |
418 | } | |
419 | } | |
420 | } | |
421 | ||
422 | static int encode_slice_plane(ProresContext *ctx, PutBitContext *pb, | |
423 | const uint16_t *src, int linesize, | |
424 | int mbs_per_slice, int16_t *blocks, | |
425 | int blocks_per_mb, int plane_size_factor, | |
426 | const int16_t *qmat) | |
427 | { | |
428 | int blocks_per_slice, saved_pos; | |
429 | ||
430 | saved_pos = put_bits_count(pb); | |
431 | blocks_per_slice = mbs_per_slice * blocks_per_mb; | |
432 | ||
433 | encode_dcs(pb, blocks, blocks_per_slice, qmat[0]); | |
434 | encode_acs(pb, blocks, blocks_per_slice, plane_size_factor, | |
435 | ctx->scantable, qmat); | |
436 | flush_put_bits(pb); | |
437 | ||
438 | return (put_bits_count(pb) - saved_pos) >> 3; | |
439 | } | |
440 | ||
441 | static void put_alpha_diff(PutBitContext *pb, int cur, int prev, int abits) | |
442 | { | |
443 | const int mask = (1 << abits) - 1; | |
444 | const int dbits = (abits == 8) ? 4 : 7; | |
445 | const int dsize = 1 << dbits - 1; | |
446 | int diff = cur - prev; | |
447 | ||
448 | diff &= mask; | |
449 | if (diff >= (1 << abits) - dsize) | |
450 | diff -= 1 << abits; | |
451 | if (diff < -dsize || diff > dsize || !diff) { | |
452 | put_bits(pb, 1, 1); | |
453 | put_bits(pb, abits, diff); | |
454 | } else { | |
455 | put_bits(pb, 1, 0); | |
456 | put_bits(pb, dbits - 1, FFABS(diff) - 1); | |
457 | put_bits(pb, 1, diff < 0); | |
458 | } | |
459 | } | |
460 | ||
461 | static void put_alpha_run(PutBitContext *pb, int run) | |
462 | { | |
463 | if (run) { | |
464 | put_bits(pb, 1, 0); | |
465 | if (run < 0x10) | |
466 | put_bits(pb, 4, run); | |
467 | else | |
468 | put_bits(pb, 15, run); | |
469 | } else { | |
470 | put_bits(pb, 1, 1); | |
471 | } | |
472 | } | |
473 | ||
474 | // todo alpha quantisation for high quants | |
475 | static int encode_alpha_plane(ProresContext *ctx, PutBitContext *pb, | |
476 | int mbs_per_slice, uint16_t *blocks, | |
477 | int quant) | |
478 | { | |
479 | const int abits = ctx->alpha_bits; | |
480 | const int mask = (1 << abits) - 1; | |
481 | const int num_coeffs = mbs_per_slice * 256; | |
482 | int saved_pos = put_bits_count(pb); | |
483 | int prev = mask, cur; | |
484 | int idx = 0; | |
485 | int run = 0; | |
486 | ||
487 | cur = blocks[idx++]; | |
488 | put_alpha_diff(pb, cur, prev, abits); | |
489 | prev = cur; | |
490 | do { | |
491 | cur = blocks[idx++]; | |
492 | if (cur != prev) { | |
493 | put_alpha_run (pb, run); | |
494 | put_alpha_diff(pb, cur, prev, abits); | |
495 | prev = cur; | |
496 | run = 0; | |
497 | } else { | |
498 | run++; | |
499 | } | |
500 | } while (idx < num_coeffs); | |
501 | if (run) | |
502 | put_alpha_run(pb, run); | |
503 | flush_put_bits(pb); | |
504 | return (put_bits_count(pb) - saved_pos) >> 3; | |
505 | } | |
506 | ||
507 | static int encode_slice(AVCodecContext *avctx, const AVFrame *pic, | |
508 | PutBitContext *pb, | |
509 | int sizes[4], int x, int y, int quant, | |
510 | int mbs_per_slice) | |
511 | { | |
512 | ProresContext *ctx = avctx->priv_data; | |
513 | int i, xp, yp; | |
514 | int total_size = 0; | |
515 | const uint16_t *src; | |
516 | int slice_width_factor = av_log2(mbs_per_slice); | |
517 | int num_cblocks, pwidth, linesize, line_add; | |
518 | int plane_factor, is_chroma; | |
519 | uint16_t *qmat; | |
520 | ||
521 | if (ctx->pictures_per_frame == 1) | |
522 | line_add = 0; | |
523 | else | |
524 | line_add = ctx->cur_picture_idx ^ !pic->top_field_first; | |
525 | ||
526 | if (ctx->force_quant) { | |
527 | qmat = ctx->quants[0]; | |
528 | } else if (quant < MAX_STORED_Q) { | |
529 | qmat = ctx->quants[quant]; | |
530 | } else { | |
531 | qmat = ctx->custom_q; | |
532 | for (i = 0; i < 64; i++) | |
533 | qmat[i] = ctx->quant_mat[i] * quant; | |
534 | } | |
535 | ||
536 | for (i = 0; i < ctx->num_planes; i++) { | |
537 | is_chroma = (i == 1 || i == 2); | |
538 | plane_factor = slice_width_factor + 2; | |
539 | if (is_chroma) | |
540 | plane_factor += ctx->chroma_factor - 3; | |
541 | if (!is_chroma || ctx->chroma_factor == CFACTOR_Y444) { | |
542 | xp = x << 4; | |
543 | yp = y << 4; | |
544 | num_cblocks = 4; | |
545 | pwidth = avctx->width; | |
546 | } else { | |
547 | xp = x << 3; | |
548 | yp = y << 4; | |
549 | num_cblocks = 2; | |
550 | pwidth = avctx->width >> 1; | |
551 | } | |
552 | ||
553 | linesize = pic->linesize[i] * ctx->pictures_per_frame; | |
554 | src = (const uint16_t*)(pic->data[i] + yp * linesize + | |
555 | line_add * pic->linesize[i]) + xp; | |
556 | ||
557 | if (i < 3) { | |
558 | get_slice_data(ctx, src, linesize, xp, yp, | |
559 | pwidth, avctx->height / ctx->pictures_per_frame, | |
560 | ctx->blocks[0], ctx->emu_buf, | |
561 | mbs_per_slice, num_cblocks, is_chroma); | |
562 | sizes[i] = encode_slice_plane(ctx, pb, src, linesize, | |
563 | mbs_per_slice, ctx->blocks[0], | |
564 | num_cblocks, plane_factor, | |
565 | qmat); | |
566 | } else { | |
567 | get_alpha_data(ctx, src, linesize, xp, yp, | |
568 | pwidth, avctx->height / ctx->pictures_per_frame, | |
569 | ctx->blocks[0], mbs_per_slice, ctx->alpha_bits); | |
570 | sizes[i] = encode_alpha_plane(ctx, pb, mbs_per_slice, | |
571 | ctx->blocks[0], quant); | |
572 | } | |
573 | total_size += sizes[i]; | |
574 | if (put_bits_left(pb) < 0) { | |
575 | av_log(avctx, AV_LOG_ERROR, | |
576 | "Underestimated required buffer size.\n"); | |
577 | return AVERROR_BUG; | |
578 | } | |
579 | } | |
580 | return total_size; | |
581 | } | |
582 | ||
583 | static inline int estimate_vlc(unsigned codebook, int val) | |
584 | { | |
585 | unsigned int rice_order, exp_order, switch_bits, switch_val; | |
586 | int exponent; | |
587 | ||
588 | /* number of prefix bits to switch between Rice and expGolomb */ | |
589 | switch_bits = (codebook & 3) + 1; | |
590 | rice_order = codebook >> 5; /* rice code order */ | |
591 | exp_order = (codebook >> 2) & 7; /* exp golomb code order */ | |
592 | ||
593 | switch_val = switch_bits << rice_order; | |
594 | ||
595 | if (val >= switch_val) { | |
596 | val -= switch_val - (1 << exp_order); | |
597 | exponent = av_log2(val); | |
598 | ||
599 | return exponent * 2 - exp_order + switch_bits + 1; | |
600 | } else { | |
601 | return (val >> rice_order) + rice_order + 1; | |
602 | } | |
603 | } | |
604 | ||
605 | static int estimate_dcs(int *error, int16_t *blocks, int blocks_per_slice, | |
606 | int scale) | |
607 | { | |
608 | int i; | |
609 | int codebook = 3, code, dc, prev_dc, delta, sign, new_sign; | |
610 | int bits; | |
611 | ||
612 | prev_dc = (blocks[0] - 0x4000) / scale; | |
613 | bits = estimate_vlc(FIRST_DC_CB, MAKE_CODE(prev_dc)); | |
614 | sign = 0; | |
615 | codebook = 3; | |
616 | blocks += 64; | |
617 | *error += FFABS(blocks[0] - 0x4000) % scale; | |
618 | ||
619 | for (i = 1; i < blocks_per_slice; i++, blocks += 64) { | |
620 | dc = (blocks[0] - 0x4000) / scale; | |
621 | *error += FFABS(blocks[0] - 0x4000) % scale; | |
622 | delta = dc - prev_dc; | |
623 | new_sign = GET_SIGN(delta); | |
624 | delta = (delta ^ sign) - sign; | |
625 | code = MAKE_CODE(delta); | |
626 | bits += estimate_vlc(ff_prores_dc_codebook[codebook], code); | |
627 | codebook = (code + (code & 1)) >> 1; | |
628 | codebook = FFMIN(codebook, 3); | |
629 | sign = new_sign; | |
630 | prev_dc = dc; | |
631 | } | |
632 | ||
633 | return bits; | |
634 | } | |
635 | ||
636 | static int estimate_acs(int *error, int16_t *blocks, int blocks_per_slice, | |
637 | int plane_size_factor, | |
638 | const uint8_t *scan, const int16_t *qmat) | |
639 | { | |
640 | int idx, i; | |
641 | int run, level, run_cb, lev_cb; | |
642 | int max_coeffs, abs_level; | |
643 | int bits = 0; | |
644 | ||
645 | max_coeffs = blocks_per_slice << 6; | |
646 | run_cb = ff_prores_run_to_cb_index[4]; | |
647 | lev_cb = ff_prores_lev_to_cb_index[2]; | |
648 | run = 0; | |
649 | ||
650 | for (i = 1; i < 64; i++) { | |
651 | for (idx = scan[i]; idx < max_coeffs; idx += 64) { | |
652 | level = blocks[idx] / qmat[scan[i]]; | |
653 | *error += FFABS(blocks[idx]) % qmat[scan[i]]; | |
654 | if (level) { | |
655 | abs_level = FFABS(level); | |
656 | bits += estimate_vlc(ff_prores_ac_codebook[run_cb], run); | |
657 | bits += estimate_vlc(ff_prores_ac_codebook[lev_cb], | |
658 | abs_level - 1) + 1; | |
659 | ||
660 | run_cb = ff_prores_run_to_cb_index[FFMIN(run, 15)]; | |
661 | lev_cb = ff_prores_lev_to_cb_index[FFMIN(abs_level, 9)]; | |
662 | run = 0; | |
663 | } else { | |
664 | run++; | |
665 | } | |
666 | } | |
667 | } | |
668 | ||
669 | return bits; | |
670 | } | |
671 | ||
672 | static int estimate_slice_plane(ProresContext *ctx, int *error, int plane, | |
673 | const uint16_t *src, int linesize, | |
674 | int mbs_per_slice, | |
675 | int blocks_per_mb, int plane_size_factor, | |
676 | const int16_t *qmat, ProresThreadData *td) | |
677 | { | |
678 | int blocks_per_slice; | |
679 | int bits; | |
680 | ||
681 | blocks_per_slice = mbs_per_slice * blocks_per_mb; | |
682 | ||
683 | bits = estimate_dcs(error, td->blocks[plane], blocks_per_slice, qmat[0]); | |
684 | bits += estimate_acs(error, td->blocks[plane], blocks_per_slice, | |
685 | plane_size_factor, ctx->scantable, qmat); | |
686 | ||
687 | return FFALIGN(bits, 8); | |
688 | } | |
689 | ||
690 | static int est_alpha_diff(int cur, int prev, int abits) | |
691 | { | |
692 | const int mask = (1 << abits) - 1; | |
693 | const int dbits = (abits == 8) ? 4 : 7; | |
694 | const int dsize = 1 << dbits - 1; | |
695 | int diff = cur - prev; | |
696 | ||
697 | diff &= mask; | |
698 | if (diff >= (1 << abits) - dsize) | |
699 | diff -= 1 << abits; | |
700 | if (diff < -dsize || diff > dsize || !diff) | |
701 | return abits + 1; | |
702 | else | |
703 | return dbits + 1; | |
704 | } | |
705 | ||
706 | static int estimate_alpha_plane(ProresContext *ctx, int *error, | |
707 | const uint16_t *src, int linesize, | |
708 | int mbs_per_slice, int quant, | |
709 | int16_t *blocks) | |
710 | { | |
711 | const int abits = ctx->alpha_bits; | |
712 | const int mask = (1 << abits) - 1; | |
713 | const int num_coeffs = mbs_per_slice * 256; | |
714 | int prev = mask, cur; | |
715 | int idx = 0; | |
716 | int run = 0; | |
717 | int bits; | |
718 | ||
719 | *error = 0; | |
720 | cur = blocks[idx++]; | |
721 | bits = est_alpha_diff(cur, prev, abits); | |
722 | prev = cur; | |
723 | do { | |
724 | cur = blocks[idx++]; | |
725 | if (cur != prev) { | |
726 | if (!run) | |
727 | bits++; | |
728 | else if (run < 0x10) | |
729 | bits += 4; | |
730 | else | |
731 | bits += 15; | |
732 | bits += est_alpha_diff(cur, prev, abits); | |
733 | prev = cur; | |
734 | run = 0; | |
735 | } else { | |
736 | run++; | |
737 | } | |
738 | } while (idx < num_coeffs); | |
739 | ||
740 | if (run) { | |
741 | if (run < 0x10) | |
742 | bits += 4; | |
743 | else | |
744 | bits += 15; | |
745 | } | |
746 | ||
747 | return bits; | |
748 | } | |
749 | ||
750 | static int find_slice_quant(AVCodecContext *avctx, const AVFrame *pic, | |
751 | int trellis_node, int x, int y, int mbs_per_slice, | |
752 | ProresThreadData *td) | |
753 | { | |
754 | ProresContext *ctx = avctx->priv_data; | |
755 | int i, q, pq, xp, yp; | |
756 | const uint16_t *src; | |
757 | int slice_width_factor = av_log2(mbs_per_slice); | |
758 | int num_cblocks[MAX_PLANES], pwidth; | |
759 | int plane_factor[MAX_PLANES], is_chroma[MAX_PLANES]; | |
760 | const int min_quant = ctx->profile_info->min_quant; | |
761 | const int max_quant = ctx->profile_info->max_quant; | |
762 | int error, bits, bits_limit; | |
763 | int mbs, prev, cur, new_score; | |
764 | int slice_bits[TRELLIS_WIDTH], slice_score[TRELLIS_WIDTH]; | |
765 | int overquant; | |
766 | uint16_t *qmat; | |
767 | int linesize[4], line_add; | |
768 | ||
769 | if (ctx->pictures_per_frame == 1) | |
770 | line_add = 0; | |
771 | else | |
772 | line_add = ctx->cur_picture_idx ^ !pic->top_field_first; | |
773 | mbs = x + mbs_per_slice; | |
774 | ||
775 | for (i = 0; i < ctx->num_planes; i++) { | |
776 | is_chroma[i] = (i == 1 || i == 2); | |
777 | plane_factor[i] = slice_width_factor + 2; | |
778 | if (is_chroma[i]) | |
779 | plane_factor[i] += ctx->chroma_factor - 3; | |
780 | if (!is_chroma[i] || ctx->chroma_factor == CFACTOR_Y444) { | |
781 | xp = x << 4; | |
782 | yp = y << 4; | |
783 | num_cblocks[i] = 4; | |
784 | pwidth = avctx->width; | |
785 | } else { | |
786 | xp = x << 3; | |
787 | yp = y << 4; | |
788 | num_cblocks[i] = 2; | |
789 | pwidth = avctx->width >> 1; | |
790 | } | |
791 | ||
792 | linesize[i] = pic->linesize[i] * ctx->pictures_per_frame; | |
793 | src = (const uint16_t*)(pic->data[i] + yp * linesize[i] + | |
794 | line_add * pic->linesize[i]) + xp; | |
795 | ||
796 | if (i < 3) { | |
797 | get_slice_data(ctx, src, linesize[i], xp, yp, | |
798 | pwidth, avctx->height / ctx->pictures_per_frame, | |
799 | td->blocks[i], td->emu_buf, | |
800 | mbs_per_slice, num_cblocks[i], is_chroma[i]); | |
801 | } else { | |
802 | get_alpha_data(ctx, src, linesize[i], xp, yp, | |
803 | pwidth, avctx->height / ctx->pictures_per_frame, | |
804 | td->blocks[i], mbs_per_slice, ctx->alpha_bits); | |
805 | } | |
806 | } | |
807 | ||
808 | for (q = min_quant; q < max_quant + 2; q++) { | |
809 | td->nodes[trellis_node + q].prev_node = -1; | |
810 | td->nodes[trellis_node + q].quant = q; | |
811 | } | |
812 | ||
813 | // todo: maybe perform coarser quantising to fit into frame size when needed | |
814 | for (q = min_quant; q <= max_quant; q++) { | |
815 | bits = 0; | |
816 | error = 0; | |
817 | for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) { | |
818 | bits += estimate_slice_plane(ctx, &error, i, | |
819 | src, linesize[i], | |
820 | mbs_per_slice, | |
821 | num_cblocks[i], plane_factor[i], | |
822 | ctx->quants[q], td); | |
823 | } | |
824 | if (ctx->alpha_bits) | |
825 | bits += estimate_alpha_plane(ctx, &error, src, linesize[3], | |
826 | mbs_per_slice, q, td->blocks[3]); | |
827 | if (bits > 65000 * 8) { | |
828 | error = SCORE_LIMIT; | |
829 | break; | |
830 | } | |
831 | slice_bits[q] = bits; | |
832 | slice_score[q] = error; | |
833 | } | |
834 | if (slice_bits[max_quant] <= ctx->bits_per_mb * mbs_per_slice) { | |
835 | slice_bits[max_quant + 1] = slice_bits[max_quant]; | |
836 | slice_score[max_quant + 1] = slice_score[max_quant] + 1; | |
837 | overquant = max_quant; | |
838 | } else { | |
839 | for (q = max_quant + 1; q < 128; q++) { | |
840 | bits = 0; | |
841 | error = 0; | |
842 | if (q < MAX_STORED_Q) { | |
843 | qmat = ctx->quants[q]; | |
844 | } else { | |
845 | qmat = td->custom_q; | |
846 | for (i = 0; i < 64; i++) | |
847 | qmat[i] = ctx->quant_mat[i] * q; | |
848 | } | |
849 | for (i = 0; i < ctx->num_planes - !!ctx->alpha_bits; i++) { | |
850 | bits += estimate_slice_plane(ctx, &error, i, | |
851 | src, linesize[i], | |
852 | mbs_per_slice, | |
853 | num_cblocks[i], plane_factor[i], | |
854 | qmat, td); | |
855 | } | |
856 | if (ctx->alpha_bits) | |
857 | bits += estimate_alpha_plane(ctx, &error, src, linesize[3], | |
858 | mbs_per_slice, q, td->blocks[3]); | |
859 | if (bits <= ctx->bits_per_mb * mbs_per_slice) | |
860 | break; | |
861 | } | |
862 | ||
863 | slice_bits[max_quant + 1] = bits; | |
864 | slice_score[max_quant + 1] = error; | |
865 | overquant = q; | |
866 | } | |
867 | td->nodes[trellis_node + max_quant + 1].quant = overquant; | |
868 | ||
869 | bits_limit = mbs * ctx->bits_per_mb; | |
870 | for (pq = min_quant; pq < max_quant + 2; pq++) { | |
871 | prev = trellis_node - TRELLIS_WIDTH + pq; | |
872 | ||
873 | for (q = min_quant; q < max_quant + 2; q++) { | |
874 | cur = trellis_node + q; | |
875 | ||
876 | bits = td->nodes[prev].bits + slice_bits[q]; | |
877 | error = slice_score[q]; | |
878 | if (bits > bits_limit) | |
879 | error = SCORE_LIMIT; | |
880 | ||
881 | if (td->nodes[prev].score < SCORE_LIMIT && error < SCORE_LIMIT) | |
882 | new_score = td->nodes[prev].score + error; | |
883 | else | |
884 | new_score = SCORE_LIMIT; | |
885 | if (td->nodes[cur].prev_node == -1 || | |
886 | td->nodes[cur].score >= new_score) { | |
887 | ||
888 | td->nodes[cur].bits = bits; | |
889 | td->nodes[cur].score = new_score; | |
890 | td->nodes[cur].prev_node = prev; | |
891 | } | |
892 | } | |
893 | } | |
894 | ||
895 | error = td->nodes[trellis_node + min_quant].score; | |
896 | pq = trellis_node + min_quant; | |
897 | for (q = min_quant + 1; q < max_quant + 2; q++) { | |
898 | if (td->nodes[trellis_node + q].score <= error) { | |
899 | error = td->nodes[trellis_node + q].score; | |
900 | pq = trellis_node + q; | |
901 | } | |
902 | } | |
903 | ||
904 | return pq; | |
905 | } | |
906 | ||
907 | static int find_quant_thread(AVCodecContext *avctx, void *arg, | |
908 | int jobnr, int threadnr) | |
909 | { | |
910 | ProresContext *ctx = avctx->priv_data; | |
911 | ProresThreadData *td = ctx->tdata + threadnr; | |
912 | int mbs_per_slice = ctx->mbs_per_slice; | |
913 | int x, y = jobnr, mb, q = 0; | |
914 | ||
915 | for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) { | |
916 | while (ctx->mb_width - x < mbs_per_slice) | |
917 | mbs_per_slice >>= 1; | |
918 | q = find_slice_quant(avctx, avctx->coded_frame, | |
919 | (mb + 1) * TRELLIS_WIDTH, x, y, | |
920 | mbs_per_slice, td); | |
921 | } | |
922 | ||
923 | for (x = ctx->slices_width - 1; x >= 0; x--) { | |
924 | ctx->slice_q[x + y * ctx->slices_width] = td->nodes[q].quant; | |
925 | q = td->nodes[q].prev_node; | |
926 | } | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
931 | static int encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
932 | const AVFrame *pic, int *got_packet) | |
933 | { | |
934 | ProresContext *ctx = avctx->priv_data; | |
935 | uint8_t *orig_buf, *buf, *slice_hdr, *slice_sizes, *tmp; | |
936 | uint8_t *picture_size_pos; | |
937 | PutBitContext pb; | |
938 | int x, y, i, mb, q = 0; | |
939 | int sizes[4] = { 0 }; | |
940 | int slice_hdr_size = 2 + 2 * (ctx->num_planes - 1); | |
941 | int frame_size, picture_size, slice_size; | |
942 | int pkt_size, ret; | |
943 | int max_slice_size = (ctx->frame_size_upper_bound - 200) / (ctx->pictures_per_frame * ctx->slices_per_picture + 1); | |
944 | uint8_t frame_flags; | |
945 | ||
946 | *avctx->coded_frame = *pic; | |
947 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; | |
948 | avctx->coded_frame->key_frame = 1; | |
949 | ||
950 | pkt_size = ctx->frame_size_upper_bound; | |
951 | ||
952 | if ((ret = ff_alloc_packet2(avctx, pkt, pkt_size + FF_MIN_BUFFER_SIZE)) < 0) | |
953 | return ret; | |
954 | ||
955 | orig_buf = pkt->data; | |
956 | ||
957 | // frame atom | |
958 | orig_buf += 4; // frame size | |
959 | bytestream_put_be32 (&orig_buf, FRAME_ID); // frame container ID | |
960 | buf = orig_buf; | |
961 | ||
962 | // frame header | |
963 | tmp = buf; | |
964 | buf += 2; // frame header size will be stored here | |
965 | bytestream_put_be16 (&buf, 0); // version 1 | |
966 | bytestream_put_buffer(&buf, ctx->vendor, 4); | |
967 | bytestream_put_be16 (&buf, avctx->width); | |
968 | bytestream_put_be16 (&buf, avctx->height); | |
969 | ||
970 | frame_flags = ctx->chroma_factor << 6; | |
971 | if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) | |
972 | frame_flags |= pic->top_field_first ? 0x04 : 0x08; | |
973 | bytestream_put_byte (&buf, frame_flags); | |
974 | ||
975 | bytestream_put_byte (&buf, 0); // reserved | |
976 | bytestream_put_byte (&buf, avctx->color_primaries); | |
977 | bytestream_put_byte (&buf, avctx->color_trc); | |
978 | bytestream_put_byte (&buf, avctx->colorspace); | |
979 | bytestream_put_byte (&buf, 0x40 | (ctx->alpha_bits >> 3)); | |
980 | bytestream_put_byte (&buf, 0); // reserved | |
981 | if (ctx->quant_sel != QUANT_MAT_DEFAULT) { | |
982 | bytestream_put_byte (&buf, 0x03); // matrix flags - both matrices are present | |
983 | // luma quantisation matrix | |
984 | for (i = 0; i < 64; i++) | |
985 | bytestream_put_byte(&buf, ctx->quant_mat[i]); | |
986 | // chroma quantisation matrix | |
987 | for (i = 0; i < 64; i++) | |
988 | bytestream_put_byte(&buf, ctx->quant_mat[i]); | |
989 | } else { | |
990 | bytestream_put_byte (&buf, 0x00); // matrix flags - default matrices are used | |
991 | } | |
992 | bytestream_put_be16 (&tmp, buf - orig_buf); // write back frame header size | |
993 | ||
994 | for (ctx->cur_picture_idx = 0; | |
995 | ctx->cur_picture_idx < ctx->pictures_per_frame; | |
996 | ctx->cur_picture_idx++) { | |
997 | // picture header | |
998 | picture_size_pos = buf + 1; | |
999 | bytestream_put_byte (&buf, 0x40); // picture header size (in bits) | |
1000 | buf += 4; // picture data size will be stored here | |
1001 | bytestream_put_be16 (&buf, ctx->slices_per_picture); | |
1002 | bytestream_put_byte (&buf, av_log2(ctx->mbs_per_slice) << 4); // slice width and height in MBs | |
1003 | ||
1004 | // seek table - will be filled during slice encoding | |
1005 | slice_sizes = buf; | |
1006 | buf += ctx->slices_per_picture * 2; | |
1007 | ||
1008 | // slices | |
1009 | if (!ctx->force_quant) { | |
1010 | ret = avctx->execute2(avctx, find_quant_thread, NULL, NULL, | |
1011 | ctx->mb_height); | |
1012 | if (ret) | |
1013 | return ret; | |
1014 | } | |
1015 | ||
1016 | for (y = 0; y < ctx->mb_height; y++) { | |
1017 | int mbs_per_slice = ctx->mbs_per_slice; | |
1018 | for (x = mb = 0; x < ctx->mb_width; x += mbs_per_slice, mb++) { | |
1019 | q = ctx->force_quant ? ctx->force_quant | |
1020 | : ctx->slice_q[mb + y * ctx->slices_width]; | |
1021 | ||
1022 | while (ctx->mb_width - x < mbs_per_slice) | |
1023 | mbs_per_slice >>= 1; | |
1024 | ||
1025 | bytestream_put_byte(&buf, slice_hdr_size << 3); | |
1026 | slice_hdr = buf; | |
1027 | buf += slice_hdr_size - 1; | |
1028 | if (pkt_size <= buf - orig_buf + 2 * max_slice_size) { | |
1029 | uint8_t *start = pkt->data; | |
1030 | // Recompute new size according to max_slice_size | |
1031 | // and deduce delta | |
1032 | int delta = 200 + (ctx->pictures_per_frame * | |
1033 | ctx->slices_per_picture + 1) * | |
1034 | max_slice_size - pkt_size; | |
1035 | ||
1036 | delta = FFMAX(delta, 2 * max_slice_size); | |
1037 | ctx->frame_size_upper_bound += delta; | |
1038 | ||
1039 | if (!ctx->warn) { | |
1040 | avpriv_request_sample(avctx, | |
1041 | "Packet too small: is %i," | |
1042 | " needs %i (slice: %i). " | |
1043 | "Correct allocation", | |
1044 | pkt_size, delta, max_slice_size); | |
1045 | ctx->warn = 1; | |
1046 | } | |
1047 | ||
1048 | ret = av_grow_packet(pkt, delta); | |
1049 | if (ret < 0) | |
1050 | return ret; | |
1051 | ||
1052 | pkt_size += delta; | |
1053 | // restore pointers | |
1054 | orig_buf = pkt->data + (orig_buf - start); | |
1055 | buf = pkt->data + (buf - start); | |
1056 | picture_size_pos = pkt->data + (picture_size_pos - start); | |
1057 | slice_sizes = pkt->data + (slice_sizes - start); | |
1058 | slice_hdr = pkt->data + (slice_hdr - start); | |
1059 | tmp = pkt->data + (tmp - start); | |
1060 | } | |
1061 | init_put_bits(&pb, buf, (pkt_size - (buf - orig_buf)) * 8); | |
1062 | ret = encode_slice(avctx, pic, &pb, sizes, x, y, q, | |
1063 | mbs_per_slice); | |
1064 | if (ret < 0) | |
1065 | return ret; | |
1066 | ||
1067 | bytestream_put_byte(&slice_hdr, q); | |
1068 | slice_size = slice_hdr_size + sizes[ctx->num_planes - 1]; | |
1069 | for (i = 0; i < ctx->num_planes - 1; i++) { | |
1070 | bytestream_put_be16(&slice_hdr, sizes[i]); | |
1071 | slice_size += sizes[i]; | |
1072 | } | |
1073 | bytestream_put_be16(&slice_sizes, slice_size); | |
1074 | buf += slice_size - slice_hdr_size; | |
1075 | if (max_slice_size < slice_size) | |
1076 | max_slice_size = slice_size; | |
1077 | } | |
1078 | } | |
1079 | ||
1080 | picture_size = buf - (picture_size_pos - 1); | |
1081 | bytestream_put_be32(&picture_size_pos, picture_size); | |
1082 | } | |
1083 | ||
1084 | orig_buf -= 8; | |
1085 | frame_size = buf - orig_buf; | |
1086 | bytestream_put_be32(&orig_buf, frame_size); | |
1087 | ||
1088 | pkt->size = frame_size; | |
1089 | pkt->flags |= AV_PKT_FLAG_KEY; | |
1090 | *got_packet = 1; | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | static av_cold int encode_close(AVCodecContext *avctx) | |
1096 | { | |
1097 | ProresContext *ctx = avctx->priv_data; | |
1098 | int i; | |
1099 | ||
1100 | av_freep(&avctx->coded_frame); | |
1101 | ||
1102 | if (ctx->tdata) { | |
1103 | for (i = 0; i < avctx->thread_count; i++) | |
f6fa7814 | 1104 | av_freep(&ctx->tdata[i].nodes); |
2ba45a60 DM |
1105 | } |
1106 | av_freep(&ctx->tdata); | |
1107 | av_freep(&ctx->slice_q); | |
1108 | ||
1109 | return 0; | |
1110 | } | |
1111 | ||
1112 | static void prores_fdct(FDCTDSPContext *fdsp, const uint16_t *src, | |
1113 | int linesize, int16_t *block) | |
1114 | { | |
1115 | int x, y; | |
1116 | const uint16_t *tsrc = src; | |
1117 | ||
1118 | for (y = 0; y < 8; y++) { | |
1119 | for (x = 0; x < 8; x++) | |
1120 | block[y * 8 + x] = tsrc[x]; | |
1121 | tsrc += linesize >> 1; | |
1122 | } | |
1123 | fdsp->fdct(block); | |
1124 | } | |
1125 | ||
1126 | static av_cold int encode_init(AVCodecContext *avctx) | |
1127 | { | |
1128 | ProresContext *ctx = avctx->priv_data; | |
1129 | int mps; | |
1130 | int i, j; | |
1131 | int min_quant, max_quant; | |
1132 | int interlaced = !!(avctx->flags & CODEC_FLAG_INTERLACED_DCT); | |
1133 | ||
1134 | avctx->bits_per_raw_sample = 10; | |
1135 | avctx->coded_frame = av_frame_alloc(); | |
1136 | if (!avctx->coded_frame) | |
1137 | return AVERROR(ENOMEM); | |
1138 | ||
1139 | ctx->fdct = prores_fdct; | |
1140 | ctx->scantable = interlaced ? ff_prores_interlaced_scan | |
1141 | : ff_prores_progressive_scan; | |
1142 | ff_fdctdsp_init(&ctx->fdsp, avctx); | |
1143 | ||
1144 | mps = ctx->mbs_per_slice; | |
1145 | if (mps & (mps - 1)) { | |
1146 | av_log(avctx, AV_LOG_ERROR, | |
1147 | "there should be an integer power of two MBs per slice\n"); | |
1148 | return AVERROR(EINVAL); | |
1149 | } | |
1150 | if (ctx->profile == PRORES_PROFILE_AUTO) { | |
f6fa7814 DM |
1151 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); |
1152 | ctx->profile = (desc->flags & AV_PIX_FMT_FLAG_ALPHA || | |
1153 | !(desc->log2_chroma_w + desc->log2_chroma_h)) | |
2ba45a60 DM |
1154 | ? PRORES_PROFILE_4444 : PRORES_PROFILE_HQ; |
1155 | av_log(avctx, AV_LOG_INFO, "Autoselected %s. It can be overridden " | |
1156 | "through -profile option.\n", ctx->profile == PRORES_PROFILE_4444 | |
f6fa7814 | 1157 | ? "4:4:4:4 profile because of the used input colorspace" |
2ba45a60 DM |
1158 | : "HQ profile to keep best quality"); |
1159 | } | |
1160 | if (av_pix_fmt_desc_get(avctx->pix_fmt)->flags & AV_PIX_FMT_FLAG_ALPHA) { | |
1161 | if (ctx->profile != PRORES_PROFILE_4444) { | |
1162 | // force alpha and warn | |
1163 | av_log(avctx, AV_LOG_WARNING, "Profile selected will not " | |
1164 | "encode alpha. Override with -profile if needed.\n"); | |
1165 | ctx->alpha_bits = 0; | |
1166 | } | |
1167 | if (ctx->alpha_bits & 7) { | |
1168 | av_log(avctx, AV_LOG_ERROR, "alpha bits should be 0, 8 or 16\n"); | |
1169 | return AVERROR(EINVAL); | |
1170 | } | |
1171 | } else { | |
1172 | ctx->alpha_bits = 0; | |
1173 | } | |
1174 | ||
1175 | ctx->chroma_factor = avctx->pix_fmt == AV_PIX_FMT_YUV422P10 | |
1176 | ? CFACTOR_Y422 | |
1177 | : CFACTOR_Y444; | |
1178 | ctx->profile_info = prores_profile_info + ctx->profile; | |
1179 | ctx->num_planes = 3 + !!ctx->alpha_bits; | |
1180 | ||
1181 | ctx->mb_width = FFALIGN(avctx->width, 16) >> 4; | |
1182 | ||
1183 | if (interlaced) | |
1184 | ctx->mb_height = FFALIGN(avctx->height, 32) >> 5; | |
1185 | else | |
1186 | ctx->mb_height = FFALIGN(avctx->height, 16) >> 4; | |
1187 | ||
1188 | ctx->slices_width = ctx->mb_width / mps; | |
1189 | ctx->slices_width += av_popcount(ctx->mb_width - ctx->slices_width * mps); | |
1190 | ctx->slices_per_picture = ctx->mb_height * ctx->slices_width; | |
1191 | ctx->pictures_per_frame = 1 + interlaced; | |
1192 | ||
1193 | if (ctx->quant_sel == -1) | |
1194 | ctx->quant_mat = prores_quant_matrices[ctx->profile_info->quant]; | |
1195 | else | |
1196 | ctx->quant_mat = prores_quant_matrices[ctx->quant_sel]; | |
1197 | ||
1198 | if (strlen(ctx->vendor) != 4) { | |
1199 | av_log(avctx, AV_LOG_ERROR, "vendor ID should be 4 bytes\n"); | |
1200 | return AVERROR_INVALIDDATA; | |
1201 | } | |
1202 | ||
1203 | ctx->force_quant = avctx->global_quality / FF_QP2LAMBDA; | |
1204 | if (!ctx->force_quant) { | |
1205 | if (!ctx->bits_per_mb) { | |
1206 | for (i = 0; i < NUM_MB_LIMITS - 1; i++) | |
1207 | if (prores_mb_limits[i] >= ctx->mb_width * ctx->mb_height * | |
1208 | ctx->pictures_per_frame) | |
1209 | break; | |
1210 | ctx->bits_per_mb = ctx->profile_info->br_tab[i]; | |
1211 | } else if (ctx->bits_per_mb < 128) { | |
1212 | av_log(avctx, AV_LOG_ERROR, "too few bits per MB, please set at least 128\n"); | |
1213 | return AVERROR_INVALIDDATA; | |
1214 | } | |
1215 | ||
1216 | min_quant = ctx->profile_info->min_quant; | |
1217 | max_quant = ctx->profile_info->max_quant; | |
1218 | for (i = min_quant; i < MAX_STORED_Q; i++) { | |
1219 | for (j = 0; j < 64; j++) | |
1220 | ctx->quants[i][j] = ctx->quant_mat[j] * i; | |
1221 | } | |
1222 | ||
1223 | ctx->slice_q = av_malloc(ctx->slices_per_picture * sizeof(*ctx->slice_q)); | |
1224 | if (!ctx->slice_q) { | |
1225 | encode_close(avctx); | |
1226 | return AVERROR(ENOMEM); | |
1227 | } | |
1228 | ||
1229 | ctx->tdata = av_mallocz(avctx->thread_count * sizeof(*ctx->tdata)); | |
1230 | if (!ctx->tdata) { | |
1231 | encode_close(avctx); | |
1232 | return AVERROR(ENOMEM); | |
1233 | } | |
1234 | ||
1235 | for (j = 0; j < avctx->thread_count; j++) { | |
1236 | ctx->tdata[j].nodes = av_malloc((ctx->slices_width + 1) | |
1237 | * TRELLIS_WIDTH | |
1238 | * sizeof(*ctx->tdata->nodes)); | |
1239 | if (!ctx->tdata[j].nodes) { | |
1240 | encode_close(avctx); | |
1241 | return AVERROR(ENOMEM); | |
1242 | } | |
1243 | for (i = min_quant; i < max_quant + 2; i++) { | |
1244 | ctx->tdata[j].nodes[i].prev_node = -1; | |
1245 | ctx->tdata[j].nodes[i].bits = 0; | |
1246 | ctx->tdata[j].nodes[i].score = 0; | |
1247 | } | |
1248 | } | |
1249 | } else { | |
1250 | int ls = 0; | |
1251 | ||
1252 | if (ctx->force_quant > 64) { | |
1253 | av_log(avctx, AV_LOG_ERROR, "too large quantiser, maximum is 64\n"); | |
1254 | return AVERROR_INVALIDDATA; | |
1255 | } | |
1256 | ||
1257 | for (j = 0; j < 64; j++) { | |
1258 | ctx->quants[0][j] = ctx->quant_mat[j] * ctx->force_quant; | |
1259 | ls += av_log2((1 << 11) / ctx->quants[0][j]) * 2 + 1; | |
1260 | } | |
1261 | ||
1262 | ctx->bits_per_mb = ls * 8; | |
1263 | if (ctx->chroma_factor == CFACTOR_Y444) | |
1264 | ctx->bits_per_mb += ls * 4; | |
1265 | } | |
1266 | ||
1267 | ctx->frame_size_upper_bound = (ctx->pictures_per_frame * | |
1268 | ctx->slices_per_picture + 1) * | |
1269 | (2 + 2 * ctx->num_planes + | |
1270 | (mps * ctx->bits_per_mb) / 8) | |
1271 | + 200; | |
1272 | ||
1273 | if (ctx->alpha_bits) { | |
1274 | // The alpha plane is run-coded and might exceed the bit budget. | |
1275 | ctx->frame_size_upper_bound += (ctx->pictures_per_frame * | |
1276 | ctx->slices_per_picture + 1) * | |
1277 | /* num pixels per slice */ (ctx->mbs_per_slice * 256 * | |
1278 | /* bits per pixel */ (1 + ctx->alpha_bits + 1) + 7 >> 3); | |
1279 | } | |
1280 | ||
1281 | avctx->codec_tag = ctx->profile_info->tag; | |
1282 | ||
1283 | av_log(avctx, AV_LOG_DEBUG, | |
1284 | "profile %d, %d slices, interlacing: %s, %d bits per MB\n", | |
1285 | ctx->profile, ctx->slices_per_picture * ctx->pictures_per_frame, | |
1286 | interlaced ? "yes" : "no", ctx->bits_per_mb); | |
1287 | av_log(avctx, AV_LOG_DEBUG, "frame size upper bound: %d\n", | |
1288 | ctx->frame_size_upper_bound); | |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
1293 | #define OFFSET(x) offsetof(ProresContext, x) | |
1294 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | |
1295 | ||
1296 | static const AVOption options[] = { | |
1297 | { "mbs_per_slice", "macroblocks per slice", OFFSET(mbs_per_slice), | |
1298 | AV_OPT_TYPE_INT, { .i64 = 8 }, 1, MAX_MBS_PER_SLICE, VE }, | |
1299 | { "profile", NULL, OFFSET(profile), AV_OPT_TYPE_INT, | |
1300 | { .i64 = PRORES_PROFILE_AUTO }, | |
1301 | PRORES_PROFILE_AUTO, PRORES_PROFILE_4444, VE, "profile" }, | |
1302 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_AUTO }, | |
1303 | 0, 0, VE, "profile" }, | |
1304 | { "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_PROXY }, | |
1305 | 0, 0, VE, "profile" }, | |
1306 | { "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_LT }, | |
1307 | 0, 0, VE, "profile" }, | |
1308 | { "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_STANDARD }, | |
1309 | 0, 0, VE, "profile" }, | |
1310 | { "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_HQ }, | |
1311 | 0, 0, VE, "profile" }, | |
1312 | { "4444", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRORES_PROFILE_4444 }, | |
1313 | 0, 0, VE, "profile" }, | |
1314 | { "vendor", "vendor ID", OFFSET(vendor), | |
1315 | AV_OPT_TYPE_STRING, { .str = "Lavc" }, CHAR_MIN, CHAR_MAX, VE }, | |
1316 | { "bits_per_mb", "desired bits per macroblock", OFFSET(bits_per_mb), | |
1317 | AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8192, VE }, | |
1318 | { "quant_mat", "quantiser matrix", OFFSET(quant_sel), AV_OPT_TYPE_INT, | |
1319 | { .i64 = -1 }, -1, QUANT_MAT_DEFAULT, VE, "quant_mat" }, | |
1320 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, | |
1321 | 0, 0, VE, "quant_mat" }, | |
1322 | { "proxy", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_PROXY }, | |
1323 | 0, 0, VE, "quant_mat" }, | |
1324 | { "lt", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_LT }, | |
1325 | 0, 0, VE, "quant_mat" }, | |
1326 | { "standard", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_STANDARD }, | |
1327 | 0, 0, VE, "quant_mat" }, | |
1328 | { "hq", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_HQ }, | |
1329 | 0, 0, VE, "quant_mat" }, | |
1330 | { "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = QUANT_MAT_DEFAULT }, | |
1331 | 0, 0, VE, "quant_mat" }, | |
1332 | { "alpha_bits", "bits for alpha plane", OFFSET(alpha_bits), AV_OPT_TYPE_INT, | |
1333 | { .i64 = 16 }, 0, 16, VE }, | |
1334 | { NULL } | |
1335 | }; | |
1336 | ||
1337 | static const AVClass proresenc_class = { | |
1338 | .class_name = "ProRes encoder", | |
1339 | .item_name = av_default_item_name, | |
1340 | .option = options, | |
1341 | .version = LIBAVUTIL_VERSION_INT, | |
1342 | }; | |
1343 | ||
1344 | AVCodec ff_prores_ks_encoder = { | |
1345 | .name = "prores_ks", | |
1346 | .long_name = NULL_IF_CONFIG_SMALL("Apple ProRes (iCodec Pro)"), | |
1347 | .type = AVMEDIA_TYPE_VIDEO, | |
1348 | .id = AV_CODEC_ID_PRORES, | |
1349 | .priv_data_size = sizeof(ProresContext), | |
1350 | .init = encode_init, | |
1351 | .close = encode_close, | |
1352 | .encode2 = encode_frame, | |
1353 | .capabilities = CODEC_CAP_SLICE_THREADS, | |
1354 | .pix_fmts = (const enum AVPixelFormat[]) { | |
1355 | AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, | |
1356 | AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE | |
1357 | }, | |
1358 | .priv_class = &proresenc_class, | |
1359 | }; |