8cf54c5dc778133ada37b5ff19f6d2a87a4fc12c
[libav.git] / libavcodec / dnxhdenc.c
1 /*
2 * VC3/DNxHD encoder
3 * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
4 *
5 * VC-3 encoder funded by the British Broadcasting Corporation
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 //#define DEBUG
25 #define RC_VARIANCE 1 // use variance or ssd for fast rc
26
27 #include "avcodec.h"
28 #include "dsputil.h"
29 #include "mpegvideo.h"
30 #include "dnxhdenc.h"
31
32 int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
33
34 #define LAMBDA_FRAC_BITS 10
35
36 static av_always_inline void dnxhd_get_pixels_8x4(DCTELEM *restrict block, const uint8_t *pixels, int line_size)
37 {
38 int i;
39 for (i = 0; i < 4; i++) {
40 block[0] = pixels[0]; block[1] = pixels[1];
41 block[2] = pixels[2]; block[3] = pixels[3];
42 block[4] = pixels[4]; block[5] = pixels[5];
43 block[6] = pixels[6]; block[7] = pixels[7];
44 pixels += line_size;
45 block += 8;
46 }
47 memcpy(block , block- 8, sizeof(*block)*8);
48 memcpy(block+ 8, block-16, sizeof(*block)*8);
49 memcpy(block+16, block-24, sizeof(*block)*8);
50 memcpy(block+24, block-32, sizeof(*block)*8);
51 }
52
53 static int dnxhd_init_vlc(DNXHDEncContext *ctx)
54 {
55 int i, j, level, run;
56 int max_level = 1<<(ctx->cid_table->bit_depth+2);
57
58 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_codes, max_level*4*sizeof(*ctx->vlc_codes), fail);
59 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->vlc_bits , max_level*4*sizeof(*ctx->vlc_bits ), fail);
60 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_codes, 63*2 , fail);
61 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_bits , 63 , fail);
62
63 ctx->vlc_codes += max_level*2;
64 ctx->vlc_bits += max_level*2;
65 for (level = -max_level; level < max_level; level++) {
66 for (run = 0; run < 2; run++) {
67 int index = (level<<1)|run;
68 int sign, offset = 0, alevel = level;
69
70 MASK_ABS(sign, alevel);
71 if (alevel > 64) {
72 offset = (alevel-1)>>6;
73 alevel -= offset<<6;
74 }
75 for (j = 0; j < 257; j++) {
76 if (ctx->cid_table->ac_level[j] == alevel &&
77 (!offset || (ctx->cid_table->ac_index_flag[j] && offset)) &&
78 (!run || (ctx->cid_table->ac_run_flag [j] && run))) {
79 assert(!ctx->vlc_codes[index]);
80 if (alevel) {
81 ctx->vlc_codes[index] = (ctx->cid_table->ac_codes[j]<<1)|(sign&1);
82 ctx->vlc_bits [index] = ctx->cid_table->ac_bits[j]+1;
83 } else {
84 ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j];
85 ctx->vlc_bits [index] = ctx->cid_table->ac_bits [j];
86 }
87 break;
88 }
89 }
90 assert(!alevel || j < 257);
91 if (offset) {
92 ctx->vlc_codes[index] = (ctx->vlc_codes[index]<<ctx->cid_table->index_bits)|offset;
93 ctx->vlc_bits [index]+= ctx->cid_table->index_bits;
94 }
95 }
96 }
97 for (i = 0; i < 62; i++) {
98 int run = ctx->cid_table->run[i];
99 assert(run < 63);
100 ctx->run_codes[run] = ctx->cid_table->run_codes[i];
101 ctx->run_bits [run] = ctx->cid_table->run_bits[i];
102 }
103 return 0;
104 fail:
105 return -1;
106 }
107
108 static int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias)
109 {
110 // init first elem to 1 to avoid div by 0 in convert_matrix
111 uint16_t weight_matrix[64] = {1,}; // convert_matrix needs uint16_t*
112 int qscale, i;
113
114 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l, (ctx->m.avctx->qmax+1) * 64 * sizeof(int) , fail);
115 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c, (ctx->m.avctx->qmax+1) * 64 * sizeof(int) , fail);
116 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);
117 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16, (ctx->m.avctx->qmax+1) * 64 * 2 * sizeof(uint16_t), fail);
118
119 for (i = 1; i < 64; i++) {
120 int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];
121 weight_matrix[j] = ctx->cid_table->luma_weight[i];
122 }
123 ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_l, ctx->qmatrix_l16, weight_matrix,
124 ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);
125 for (i = 1; i < 64; i++) {
126 int j = ctx->m.dsp.idct_permutation[ff_zigzag_direct[i]];
127 weight_matrix[j] = ctx->cid_table->chroma_weight[i];
128 }
129 ff_convert_matrix(&ctx->m.dsp, ctx->qmatrix_c, ctx->qmatrix_c16, weight_matrix,
130 ctx->m.intra_quant_bias, 1, ctx->m.avctx->qmax, 1);
131 for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {
132 for (i = 0; i < 64; i++) {
133 ctx->qmatrix_l [qscale] [i] <<= 2; ctx->qmatrix_c [qscale] [i] <<= 2;
134 ctx->qmatrix_l16[qscale][0][i] <<= 2; ctx->qmatrix_l16[qscale][1][i] <<= 2;
135 ctx->qmatrix_c16[qscale][0][i] <<= 2; ctx->qmatrix_c16[qscale][1][i] <<= 2;
136 }
137 }
138 return 0;
139 fail:
140 return -1;
141 }
142
143 static int dnxhd_init_rc(DNXHDEncContext *ctx)
144 {
145 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_rc, 8160*ctx->m.avctx->qmax*sizeof(RCEntry), fail);
146 if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)
147 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_cmp, ctx->m.mb_num*sizeof(RCCMPEntry), fail);
148
149 ctx->frame_bits = (ctx->cid_table->coding_unit_size - 640 - 4) * 8;
150 ctx->qscale = 1;
151 ctx->lambda = 2<<LAMBDA_FRAC_BITS; // qscale 2
152 return 0;
153 fail:
154 return -1;
155 }
156
157 static int dnxhd_encode_init(AVCodecContext *avctx)
158 {
159 DNXHDEncContext *ctx = avctx->priv_data;
160 int i, index;
161
162 ctx->cid = ff_dnxhd_find_cid(avctx);
163 if (!ctx->cid || avctx->pix_fmt != PIX_FMT_YUV422P) {
164 av_log(avctx, AV_LOG_ERROR, "video parameters incompatible with DNxHD\n");
165 return -1;
166 }
167 av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid);
168
169 index = ff_dnxhd_get_cid_table(ctx->cid);
170 ctx->cid_table = &ff_dnxhd_cid_table[index];
171
172 ctx->m.avctx = avctx;
173 ctx->m.mb_intra = 1;
174 ctx->m.h263_aic = 1;
175
176 ctx->get_pixels_8x4_sym = dnxhd_get_pixels_8x4;
177
178 dsputil_init(&ctx->m.dsp, avctx);
179 ff_dct_common_init(&ctx->m);
180 #if HAVE_MMX
181 ff_dnxhd_init_mmx(ctx);
182 #endif
183 if (!ctx->m.dct_quantize)
184 ctx->m.dct_quantize = dct_quantize_c;
185
186 ctx->m.mb_height = (avctx->height + 15) / 16;
187 ctx->m.mb_width = (avctx->width + 15) / 16;
188
189 if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
190 ctx->interlaced = 1;
191 ctx->m.mb_height /= 2;
192 }
193
194 ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width;
195
196 if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
197 ctx->m.intra_quant_bias = avctx->intra_quant_bias;
198 if (dnxhd_init_qmat(ctx, ctx->m.intra_quant_bias, 0) < 0) // XXX tune lbias/cbias
199 return -1;
200
201 if (dnxhd_init_vlc(ctx) < 0)
202 return -1;
203 if (dnxhd_init_rc(ctx) < 0)
204 return -1;
205
206 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size, ctx->m.mb_height*sizeof(uint32_t), fail);
207 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs, ctx->m.mb_height*sizeof(uint32_t), fail);
208 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits, ctx->m.mb_num *sizeof(uint16_t), fail);
209 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale, ctx->m.mb_num *sizeof(uint8_t) , fail);
210
211 ctx->frame.key_frame = 1;
212 ctx->frame.pict_type = FF_I_TYPE;
213 ctx->m.avctx->coded_frame = &ctx->frame;
214
215 if (avctx->thread_count > MAX_THREADS) {
216 av_log(avctx, AV_LOG_ERROR, "too many threads\n");
217 return -1;
218 }
219
220 ctx->thread[0] = ctx;
221 for (i = 1; i < avctx->thread_count; i++) {
222 ctx->thread[i] = av_malloc(sizeof(DNXHDEncContext));
223 memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));
224 }
225
226 return 0;
227 fail: //for FF_ALLOCZ_OR_GOTO
228 return -1;
229 }
230
231 static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)
232 {
233 DNXHDEncContext *ctx = avctx->priv_data;
234 const uint8_t header_prefix[5] = { 0x00,0x00,0x02,0x80,0x01 };
235
236 memset(buf, 0, 640);
237
238 memcpy(buf, header_prefix, 5);
239 buf[5] = ctx->interlaced ? ctx->cur_field+2 : 0x01;
240 buf[6] = 0x80; // crc flag off
241 buf[7] = 0xa0; // reserved
242 AV_WB16(buf + 0x18, avctx->height>>ctx->interlaced); // ALPF
243 AV_WB16(buf + 0x1a, avctx->width); // SPL
244 AV_WB16(buf + 0x1d, avctx->height>>ctx->interlaced); // NAL
245
246 buf[0x21] = 0x38; // FIXME 8 bit per comp
247 buf[0x22] = 0x88 + (ctx->interlaced<<2);
248 AV_WB32(buf + 0x28, ctx->cid); // CID
249 buf[0x2c] = ctx->interlaced ? 0 : 0x80;
250
251 buf[0x5f] = 0x01; // UDL
252
253 buf[0x167] = 0x02; // reserved
254 AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS
255 buf[0x16d] = ctx->m.mb_height; // Ns
256 buf[0x16f] = 0x10; // reserved
257
258 ctx->msip = buf + 0x170;
259 return 0;
260 }
261
262 static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff)
263 {
264 int nbits;
265 if (diff < 0) {
266 nbits = av_log2_16bit(-2*diff);
267 diff--;
268 } else {
269 nbits = av_log2_16bit(2*diff);
270 }
271 put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits,
272 (ctx->cid_table->dc_codes[nbits]<<nbits) + (diff & ((1 << nbits) - 1)));
273 }
274
275 static av_always_inline void dnxhd_encode_block(DNXHDEncContext *ctx, DCTELEM *block, int last_index, int n)
276 {
277 int last_non_zero = 0;
278 int slevel, i, j;
279
280 dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]);
281 ctx->m.last_dc[n] = block[0];
282
283 for (i = 1; i <= last_index; i++) {
284 j = ctx->m.intra_scantable.permutated[i];
285 slevel = block[j];
286 if (slevel) {
287 int run_level = i - last_non_zero - 1;
288 int rlevel = (slevel<<1)|!!run_level;
289 put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);
290 if (run_level)
291 put_bits(&ctx->m.pb, ctx->run_bits[run_level], ctx->run_codes[run_level]);
292 last_non_zero = i;
293 }
294 }
295 put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB
296 }
297
298 static av_always_inline void dnxhd_unquantize_c(DNXHDEncContext *ctx, DCTELEM *block, int n, int qscale, int last_index)
299 {
300 const uint8_t *weight_matrix;
301 int level;
302 int i;
303
304 weight_matrix = (n&2) ? ctx->cid_table->chroma_weight : ctx->cid_table->luma_weight;
305
306 for (i = 1; i <= last_index; i++) {
307 int j = ctx->m.intra_scantable.permutated[i];
308 level = block[j];
309 if (level) {
310 if (level < 0) {
311 level = (1-2*level) * qscale * weight_matrix[i];
312 if (weight_matrix[i] != 32)
313 level += 32;
314 level >>= 6;
315 level = -level;
316 } else {
317 level = (2*level+1) * qscale * weight_matrix[i];
318 if (weight_matrix[i] != 32)
319 level += 32;
320 level >>= 6;
321 }
322 block[j] = level;
323 }
324 }
325 }
326
327 static av_always_inline int dnxhd_ssd_block(DCTELEM *qblock, DCTELEM *block)
328 {
329 int score = 0;
330 int i;
331 for (i = 0; i < 64; i++)
332 score += (block[i]-qblock[i])*(block[i]-qblock[i]);
333 return score;
334 }
335
336 static av_always_inline int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, DCTELEM *block, int last_index)
337 {
338 int last_non_zero = 0;
339 int bits = 0;
340 int i, j, level;
341 for (i = 1; i <= last_index; i++) {
342 j = ctx->m.intra_scantable.permutated[i];
343 level = block[j];
344 if (level) {
345 int run_level = i - last_non_zero - 1;
346 bits += ctx->vlc_bits[(level<<1)|!!run_level]+ctx->run_bits[run_level];
347 last_non_zero = i;
348 }
349 }
350 return bits;
351 }
352
353 static av_always_inline void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)
354 {
355 const uint8_t *ptr_y = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize) + (mb_x << 4);
356 const uint8_t *ptr_u = ctx->thread[0]->src[1] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3);
357 const uint8_t *ptr_v = ctx->thread[0]->src[2] + ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << 3);
358 DSPContext *dsp = &ctx->m.dsp;
359
360 dsp->get_pixels(ctx->blocks[0], ptr_y , ctx->m.linesize);
361 dsp->get_pixels(ctx->blocks[1], ptr_y + 8, ctx->m.linesize);
362 dsp->get_pixels(ctx->blocks[2], ptr_u , ctx->m.uvlinesize);
363 dsp->get_pixels(ctx->blocks[3], ptr_v , ctx->m.uvlinesize);
364
365 if (mb_y+1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) {
366 if (ctx->interlaced) {
367 ctx->get_pixels_8x4_sym(ctx->blocks[4], ptr_y + ctx->dct_y_offset , ctx->m.linesize);
368 ctx->get_pixels_8x4_sym(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize);
369 ctx->get_pixels_8x4_sym(ctx->blocks[6], ptr_u + ctx->dct_uv_offset , ctx->m.uvlinesize);
370 ctx->get_pixels_8x4_sym(ctx->blocks[7], ptr_v + ctx->dct_uv_offset , ctx->m.uvlinesize);
371 } else {
372 dsp->clear_block(ctx->blocks[4]); dsp->clear_block(ctx->blocks[5]);
373 dsp->clear_block(ctx->blocks[6]); dsp->clear_block(ctx->blocks[7]);
374 }
375 } else {
376 dsp->get_pixels(ctx->blocks[4], ptr_y + ctx->dct_y_offset , ctx->m.linesize);
377 dsp->get_pixels(ctx->blocks[5], ptr_y + ctx->dct_y_offset + 8, ctx->m.linesize);
378 dsp->get_pixels(ctx->blocks[6], ptr_u + ctx->dct_uv_offset , ctx->m.uvlinesize);
379 dsp->get_pixels(ctx->blocks[7], ptr_v + ctx->dct_uv_offset , ctx->m.uvlinesize);
380 }
381 }
382
383 static av_always_inline int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)
384 {
385 if (i&2) {
386 ctx->m.q_intra_matrix16 = ctx->qmatrix_c16;
387 ctx->m.q_intra_matrix = ctx->qmatrix_c;
388 return 1 + (i&1);
389 } else {
390 ctx->m.q_intra_matrix16 = ctx->qmatrix_l16;
391 ctx->m.q_intra_matrix = ctx->qmatrix_l;
392 return 0;
393 }
394 }
395
396 static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
397 {
398 DNXHDEncContext *ctx = avctx->priv_data;
399 int mb_y = jobnr, mb_x;
400 int qscale = ctx->qscale;
401 LOCAL_ALIGNED_16(DCTELEM, block, [64]);
402 ctx = ctx->thread[threadnr];
403
404 ctx->m.last_dc[0] =
405 ctx->m.last_dc[1] =
406 ctx->m.last_dc[2] = 1024;
407
408 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
409 unsigned mb = mb_y * ctx->m.mb_width + mb_x;
410 int ssd = 0;
411 int ac_bits = 0;
412 int dc_bits = 0;
413 int i;
414
415 dnxhd_get_blocks(ctx, mb_x, mb_y);
416
417 for (i = 0; i < 8; i++) {
418 DCTELEM *src_block = ctx->blocks[i];
419 int overflow, nbits, diff, last_index;
420 int n = dnxhd_switch_matrix(ctx, i);
421
422 memcpy(block, src_block, 64*sizeof(*block));
423 last_index = ctx->m.dct_quantize((MpegEncContext*)ctx, block, i, qscale, &overflow);
424 ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index);
425
426 diff = block[0] - ctx->m.last_dc[n];
427 if (diff < 0) nbits = av_log2_16bit(-2*diff);
428 else nbits = av_log2_16bit( 2*diff);
429 dc_bits += ctx->cid_table->dc_bits[nbits] + nbits;
430
431 ctx->m.last_dc[n] = block[0];
432
433 if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) {
434 dnxhd_unquantize_c(ctx, block, i, qscale, last_index);
435 ctx->m.dsp.idct(block);
436 ssd += dnxhd_ssd_block(block, src_block);
437 }
438 }
439 ctx->mb_rc[qscale][mb].ssd = ssd;
440 ctx->mb_rc[qscale][mb].bits = ac_bits+dc_bits+12+8*ctx->vlc_bits[0];
441 }
442 return 0;
443 }
444
445 static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
446 {
447 DNXHDEncContext *ctx = avctx->priv_data;
448 int mb_y = jobnr, mb_x;
449 ctx = ctx->thread[threadnr];
450 init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr], ctx->slice_size[jobnr]);
451
452 ctx->m.last_dc[0] =
453 ctx->m.last_dc[1] =
454 ctx->m.last_dc[2] = 1024;
455 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
456 unsigned mb = mb_y * ctx->m.mb_width + mb_x;
457 int qscale = ctx->mb_qscale[mb];
458 int i;
459
460 put_bits(&ctx->m.pb, 12, qscale<<1);
461
462 dnxhd_get_blocks(ctx, mb_x, mb_y);
463
464 for (i = 0; i < 8; i++) {
465 DCTELEM *block = ctx->blocks[i];
466 int last_index, overflow;
467 int n = dnxhd_switch_matrix(ctx, i);
468 last_index = ctx->m.dct_quantize((MpegEncContext*)ctx, block, i, qscale, &overflow);
469 //START_TIMER;
470 dnxhd_encode_block(ctx, block, last_index, n);
471 //STOP_TIMER("encode_block");
472 }
473 }
474 if (put_bits_count(&ctx->m.pb)&31)
475 put_bits(&ctx->m.pb, 32-(put_bits_count(&ctx->m.pb)&31), 0);
476 flush_put_bits(&ctx->m.pb);
477 return 0;
478 }
479
480 static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)
481 {
482 int mb_y, mb_x;
483 int offset = 0;
484 for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {
485 int thread_size;
486 ctx->slice_offs[mb_y] = offset;
487 ctx->slice_size[mb_y] = 0;
488 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
489 unsigned mb = mb_y * ctx->m.mb_width + mb_x;
490 ctx->slice_size[mb_y] += ctx->mb_bits[mb];
491 }
492 ctx->slice_size[mb_y] = (ctx->slice_size[mb_y]+31)&~31;
493 ctx->slice_size[mb_y] >>= 3;
494 thread_size = ctx->slice_size[mb_y];
495 offset += thread_size;
496 }
497 }
498
499 static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg, int jobnr, int threadnr)
500 {
501 DNXHDEncContext *ctx = avctx->priv_data;
502 int mb_y = jobnr, mb_x;
503 ctx = ctx->thread[threadnr];
504 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {
505 unsigned mb = mb_y * ctx->m.mb_width + mb_x;
506 uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y<<4) * ctx->m.linesize) + (mb_x<<4);
507 int sum = ctx->m.dsp.pix_sum(pix, ctx->m.linesize);
508 int varc = (ctx->m.dsp.pix_norm1(pix, ctx->m.linesize) - (((unsigned)(sum*sum))>>8)+128)>>8;
509 ctx->mb_cmp[mb].value = varc;
510 ctx->mb_cmp[mb].mb = mb;
511 }
512 return 0;
513 }
514
515 static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)
516 {
517 int lambda, up_step, down_step;
518 int last_lower = INT_MAX, last_higher = 0;
519 int x, y, q;
520
521 for (q = 1; q < avctx->qmax; q++) {
522 ctx->qscale = q;
523 avctx->execute2(avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
524 }
525 up_step = down_step = 2<<LAMBDA_FRAC_BITS;
526 lambda = ctx->lambda;
527
528 for (;;) {
529 int bits = 0;
530 int end = 0;
531 if (lambda == last_higher) {
532 lambda++;
533 end = 1; // need to set final qscales/bits
534 }
535 for (y = 0; y < ctx->m.mb_height; y++) {
536 for (x = 0; x < ctx->m.mb_width; x++) {
537 unsigned min = UINT_MAX;
538 int qscale = 1;
539 int mb = y*ctx->m.mb_width+x;
540 for (q = 1; q < avctx->qmax; q++) {
541 unsigned score = ctx->mb_rc[q][mb].bits*lambda+(ctx->mb_rc[q][mb].ssd<<LAMBDA_FRAC_BITS);
542 if (score < min) {
543 min = score;
544 qscale = q;
545 }
546 }
547 bits += ctx->mb_rc[qscale][mb].bits;
548 ctx->mb_qscale[mb] = qscale;
549 ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits;
550 }
551 bits = (bits+31)&~31; // padding
552 if (bits > ctx->frame_bits)
553 break;
554 }
555 //dprintf(ctx->m.avctx, "lambda %d, up %u, down %u, bits %d, frame %d\n",
556 // lambda, last_higher, last_lower, bits, ctx->frame_bits);
557 if (end) {
558 if (bits > ctx->frame_bits)
559 return -1;
560 break;
561 }
562 if (bits < ctx->frame_bits) {
563 last_lower = FFMIN(lambda, last_lower);
564 if (last_higher != 0)
565 lambda = (lambda+last_higher)>>1;
566 else
567 lambda -= down_step;
568 down_step *= 5; // XXX tune ?
569 up_step = 1<<LAMBDA_FRAC_BITS;
570 lambda = FFMAX(1, lambda);
571 if (lambda == last_lower)
572 break;
573 } else {
574 last_higher = FFMAX(lambda, last_higher);
575 if (last_lower != INT_MAX)
576 lambda = (lambda+last_lower)>>1;
577 else if ((int64_t)lambda + up_step > INT_MAX)
578 return -1;
579 else
580 lambda += up_step;
581 up_step = FFMIN((int64_t)up_step*5, INT_MAX);
582 down_step = 1<<LAMBDA_FRAC_BITS;
583 }
584 }
585 //dprintf(ctx->m.avctx, "out lambda %d\n", lambda);
586 ctx->lambda = lambda;
587 return 0;
588 }
589
590 static int dnxhd_find_qscale(DNXHDEncContext *ctx)
591 {
592 int bits = 0;
593 int up_step = 1;
594 int down_step = 1;
595 int last_higher = 0;
596 int last_lower = INT_MAX;
597 int qscale;
598 int x, y;
599
600 qscale = ctx->qscale;
601 for (;;) {
602 bits = 0;
603 ctx->qscale = qscale;
604 // XXX avoid recalculating bits
605 ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread, NULL, NULL, ctx->m.mb_height);
606 for (y = 0; y < ctx->m.mb_height; y++) {
607 for (x = 0; x < ctx->m.mb_width; x++)
608 bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;
609 bits = (bits+31)&~31; // padding
610 if (bits > ctx->frame_bits)
611 break;
612 }
613 //dprintf(ctx->m.avctx, "%d, qscale %d, bits %d, frame %d, higher %d, lower %d\n",
614 // ctx->m.avctx->frame_number, qscale, bits, ctx->frame_bits, last_higher, last_lower);
615 if (bits < ctx->frame_bits) {
616 if (qscale == 1)
617 return 1;
618 if (last_higher == qscale - 1) {
619 qscale = last_higher;
620 break;
621 }
622 last_lower = FFMIN(qscale, last_lower);
623 if (last_higher != 0)
624 qscale = (qscale+last_higher)>>1;
625 else
626 qscale -= down_step++;
627 if (qscale < 1)
628 qscale = 1;
629 up_step = 1;
630 } else {
631 if (last_lower == qscale + 1)
632 break;
633 last_higher = FFMAX(qscale, last_higher);
634 if (last_lower != INT_MAX)
635 qscale = (qscale+last_lower)>>1;
636 else
637 qscale += up_step++;
638 down_step = 1;
639 if (qscale >= ctx->m.avctx->qmax)
640 return -1;
641 }
642 }
643 //dprintf(ctx->m.avctx, "out qscale %d\n", qscale);
644 ctx->qscale = qscale;
645 return 0;
646 }
647
648 #define BUCKET_BITS 8
649 #define RADIX_PASSES 4
650 #define NBUCKETS (1 << BUCKET_BITS)
651
652 static inline int get_bucket(int value, int shift)
653 {
654 value >>= shift;
655 value &= NBUCKETS - 1;
656 return NBUCKETS - 1 - value;
657 }
658
659 static void radix_count(const RCCMPEntry *data, int size, int buckets[RADIX_PASSES][NBUCKETS])
660 {
661 int i, j;
662 memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);
663 for (i = 0; i < size; i++) {
664 int v = data[i].value;
665 for (j = 0; j < RADIX_PASSES; j++) {
666 buckets[j][get_bucket(v, 0)]++;
667 v >>= BUCKET_BITS;
668 }
669 assert(!v);
670 }
671 for (j = 0; j < RADIX_PASSES; j++) {
672 int offset = size;
673 for (i = NBUCKETS - 1; i >= 0; i--)
674 buckets[j][i] = offset -= buckets[j][i];
675 assert(!buckets[j][0]);
676 }
677 }
678
679 static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data, int size, int buckets[NBUCKETS], int pass)
680 {
681 int shift = pass * BUCKET_BITS;
682 int i;
683 for (i = 0; i < size; i++) {
684 int v = get_bucket(data[i].value, shift);
685 int pos = buckets[v]++;
686 dst[pos] = data[i];
687 }
688 }
689
690 static void radix_sort(RCCMPEntry *data, int size)
691 {
692 int buckets[RADIX_PASSES][NBUCKETS];
693 RCCMPEntry *tmp = av_malloc(sizeof(*tmp) * size);
694 radix_count(data, size, buckets);
695 radix_sort_pass(tmp, data, size, buckets[0], 0);
696 radix_sort_pass(data, tmp, size, buckets[1], 1);
697 if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {
698 radix_sort_pass(tmp, data, size, buckets[2], 2);
699 radix_sort_pass(data, tmp, size, buckets[3], 3);
700 }
701 av_free(tmp);
702 }
703
704 static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)
705 {
706 int max_bits = 0;
707 int ret, x, y;
708 if ((ret = dnxhd_find_qscale(ctx)) < 0)
709 return -1;
710 for (y = 0; y < ctx->m.mb_height; y++) {
711 for (x = 0; x < ctx->m.mb_width; x++) {
712 int mb = y*ctx->m.mb_width+x;
713 int delta_bits;
714 ctx->mb_qscale[mb] = ctx->qscale;
715 ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;
716 max_bits += ctx->mb_rc[ctx->qscale][mb].bits;
717 if (!RC_VARIANCE) {
718 delta_bits = ctx->mb_rc[ctx->qscale][mb].bits-ctx->mb_rc[ctx->qscale+1][mb].bits;
719 ctx->mb_cmp[mb].mb = mb;
720 ctx->mb_cmp[mb].value = delta_bits ?
721 ((ctx->mb_rc[ctx->qscale][mb].ssd-ctx->mb_rc[ctx->qscale+1][mb].ssd)*100)/delta_bits
722 : INT_MIN; //avoid increasing qscale
723 }
724 }
725 max_bits += 31; //worst padding
726 }
727 if (!ret) {
728 if (RC_VARIANCE)
729 avctx->execute2(avctx, dnxhd_mb_var_thread, NULL, NULL, ctx->m.mb_height);
730 radix_sort(ctx->mb_cmp, ctx->m.mb_num);
731 for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {
732 int mb = ctx->mb_cmp[x].mb;
733 max_bits -= ctx->mb_rc[ctx->qscale][mb].bits - ctx->mb_rc[ctx->qscale+1][mb].bits;
734 ctx->mb_qscale[mb] = ctx->qscale+1;
735 ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale+1][mb].bits;
736 }
737 }
738 return 0;
739 }
740
741 static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)
742 {
743 int i;
744
745 for (i = 0; i < 3; i++) {
746 ctx->frame.data[i] = frame->data[i];
747 ctx->frame.linesize[i] = frame->linesize[i];
748 }
749
750 for (i = 0; i < ctx->m.avctx->thread_count; i++) {
751 ctx->thread[i]->m.linesize = ctx->frame.linesize[0]<<ctx->interlaced;
752 ctx->thread[i]->m.uvlinesize = ctx->frame.linesize[1]<<ctx->interlaced;
753 ctx->thread[i]->dct_y_offset = ctx->m.linesize *8;
754 ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;
755 }
756
757 ctx->frame.interlaced_frame = frame->interlaced_frame;
758 ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;
759 }
760
761 static int dnxhd_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data)
762 {
763 DNXHDEncContext *ctx = avctx->priv_data;
764 int first_field = 1;
765 int offset, i, ret;
766
767 if (buf_size < ctx->cid_table->frame_size) {
768 av_log(avctx, AV_LOG_ERROR, "output buffer is too small to compress picture\n");
769 return -1;
770 }
771
772 dnxhd_load_picture(ctx, data);
773
774 encode_coding_unit:
775 for (i = 0; i < 3; i++) {
776 ctx->src[i] = ctx->frame.data[i];
777 if (ctx->interlaced && ctx->cur_field)
778 ctx->src[i] += ctx->frame.linesize[i];
779 }
780
781 dnxhd_write_header(avctx, buf);
782
783 if (avctx->mb_decision == FF_MB_DECISION_RD)
784 ret = dnxhd_encode_rdo(avctx, ctx);
785 else
786 ret = dnxhd_encode_fast(avctx, ctx);
787 if (ret < 0) {
788 av_log(avctx, AV_LOG_ERROR,
789 "picture could not fit ratecontrol constraints, increase qmax\n");
790 return -1;
791 }
792
793 dnxhd_setup_threads_slices(ctx);
794
795 offset = 0;
796 for (i = 0; i < ctx->m.mb_height; i++) {
797 AV_WB32(ctx->msip + i * 4, offset);
798 offset += ctx->slice_size[i];
799 assert(!(ctx->slice_size[i] & 3));
800 }
801
802 avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);
803
804 assert(640 + offset + 4 <= ctx->cid_table->coding_unit_size);
805 memset(buf + 640 + offset, 0, ctx->cid_table->coding_unit_size - 4 - offset - 640);
806
807 AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF
808
809 if (ctx->interlaced && first_field) {
810 first_field = 0;
811 ctx->cur_field ^= 1;
812 buf += ctx->cid_table->coding_unit_size;
813 buf_size -= ctx->cid_table->coding_unit_size;
814 goto encode_coding_unit;
815 }
816
817 ctx->frame.quality = ctx->qscale*FF_QP2LAMBDA;
818
819 return ctx->cid_table->frame_size;
820 }
821
822 static int dnxhd_encode_end(AVCodecContext *avctx)
823 {
824 DNXHDEncContext *ctx = avctx->priv_data;
825 int max_level = 1<<(ctx->cid_table->bit_depth+2);
826 int i;
827
828 av_free(ctx->vlc_codes-max_level*2);
829 av_free(ctx->vlc_bits -max_level*2);
830 av_freep(&ctx->run_codes);
831 av_freep(&ctx->run_bits);
832
833 av_freep(&ctx->mb_bits);
834 av_freep(&ctx->mb_qscale);
835 av_freep(&ctx->mb_rc);
836 av_freep(&ctx->mb_cmp);
837 av_freep(&ctx->slice_size);
838 av_freep(&ctx->slice_offs);
839
840 av_freep(&ctx->qmatrix_c);
841 av_freep(&ctx->qmatrix_l);
842 av_freep(&ctx->qmatrix_c16);
843 av_freep(&ctx->qmatrix_l16);
844
845 for (i = 1; i < avctx->thread_count; i++)
846 av_freep(&ctx->thread[i]);
847
848 return 0;
849 }
850
851 AVCodec dnxhd_encoder = {
852 "dnxhd",
853 AVMEDIA_TYPE_VIDEO,
854 CODEC_ID_DNXHD,
855 sizeof(DNXHDEncContext),
856 dnxhd_encode_init,
857 dnxhd_encode_picture,
858 dnxhd_encode_end,
859 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV422P, PIX_FMT_NONE},
860 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),
861 };