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vp8_scalable_patterns
1 /*
2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11
12 /*
13 * This is an example demonstrating how to implement a multi-layer VP8
14 * encoding scheme based on temporal scalability for video applications
15 * that benefit from a scalable bitstream.
16 */
17 #include <stdio.h>
18 #include <stdlib.h>
19 #include <stdarg.h>
20 #include <string.h>
21 #define VPX_CODEC_DISABLE_COMPAT 1
22 #include "vpx/vpx_encoder.h"
23 #include "vpx/vp8cx.h"
24 #define interface (vpx_codec_vp8_cx())
25 #define fourcc 0x30385056
26
27 #define IVF_FILE_HDR_SZ (32)
28 #define IVF_FRAME_HDR_SZ (12)
29
30 static void mem_put_le16(char *mem, unsigned int val) {
31 mem[0] = val;
32 mem[1] = val>>8;
33 }
34
35 static void mem_put_le32(char *mem, unsigned int val) {
36 mem[0] = val;
37 mem[1] = val>>8;
38 mem[2] = val>>16;
39 mem[3] = val>>24;
40 }
41
42 static void die(const char *fmt, ...) {
43 va_list ap;
44
45 va_start(ap, fmt);
46 vprintf(fmt, ap);
47 if(fmt[strlen(fmt)-1] != '\n')
48 printf("\n");
49 exit(EXIT_FAILURE);
50 }
51
52 static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
53 const char *detail = vpx_codec_error_detail(ctx);
54
55 printf("%s: %s\n", s, vpx_codec_error(ctx));
56 if(detail)
57 printf(" %s\n",detail);
58 exit(EXIT_FAILURE);
59 }
60
61 static int read_frame(FILE *f, vpx_image_t *img) {
62 size_t nbytes, to_read;
63 int res = 1;
64
65 to_read = img->w*img->h*3/2;
66 nbytes = fread(img->planes[0], 1, to_read, f);
67 if(nbytes != to_read) {
68 res = 0;
69 if(nbytes > 0)
70 printf("Warning: Read partial frame. Check your width & height!\n");
71 }
72 return res;
73 }
74
75 static void write_ivf_file_header(FILE *outfile,
76 const vpx_codec_enc_cfg_t *cfg,
77 int frame_cnt) {
78 char header[32];
79
80 if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
81 return;
82 header[0] = 'D';
83 header[1] = 'K';
84 header[2] = 'I';
85 header[3] = 'F';
86 mem_put_le16(header+4, 0); /* version */
87 mem_put_le16(header+6, 32); /* headersize */
88 mem_put_le32(header+8, fourcc); /* headersize */
89 mem_put_le16(header+12, cfg->g_w); /* width */
90 mem_put_le16(header+14, cfg->g_h); /* height */
91 mem_put_le32(header+16, cfg->g_timebase.den); /* rate */
92 mem_put_le32(header+20, cfg->g_timebase.num); /* scale */
93 mem_put_le32(header+24, frame_cnt); /* length */
94 mem_put_le32(header+28, 0); /* unused */
95
96 (void) fwrite(header, 1, 32, outfile);
97 }
98
99
100 static void write_ivf_frame_header(FILE *outfile,
101 const vpx_codec_cx_pkt_t *pkt)
102 {
103 char header[12];
104 vpx_codec_pts_t pts;
105
106 if(pkt->kind != VPX_CODEC_CX_FRAME_PKT)
107 return;
108
109 pts = pkt->data.frame.pts;
110 mem_put_le32(header, pkt->data.frame.sz);
111 mem_put_le32(header+4, pts&0xFFFFFFFF);
112 mem_put_le32(header+8, pts >> 32);
113
114 (void) fwrite(header, 1, 12, outfile);
115 }
116
117 static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3};
118
119 int main(int argc, char **argv) {
120 FILE *infile, *outfile[VPX_TS_MAX_LAYERS];
121 vpx_codec_ctx_t codec;
122 vpx_codec_enc_cfg_t cfg;
123 int frame_cnt = 0;
124 vpx_image_t raw;
125 vpx_codec_err_t res;
126 unsigned int width;
127 unsigned int height;
128 int frame_avail;
129 int got_data;
130 int flags = 0;
131 int i;
132 int pts = 0; /* PTS starts at 0 */
133 int frame_duration = 1; /* 1 timebase tick per frame */
134
135 int layering_mode = 0;
136 int frames_in_layer[VPX_TS_MAX_LAYERS] = {0};
137 int layer_flags[VPX_TS_MAX_PERIODICITY] = {0};
138 int flag_periodicity;
139 int max_intra_size_pct;
140
141 /* Check usage and arguments */
142 if (argc < 9)
143 die("Usage: %s <infile> <outfile> <width> <height> <rate_num> "
144 " <rate_den> <mode> <Rate_0> ... <Rate_nlayers-1>\n", argv[0]);
145
146 width = strtol (argv[3], NULL, 0);
147 height = strtol (argv[4], NULL, 0);
148 if (width < 16 || width%2 || height <16 || height%2)
149 die ("Invalid resolution: %d x %d", width, height);
150
151 if (!sscanf(argv[7], "%d", &layering_mode))
152 die ("Invalid mode %s", argv[7]);
153 if (layering_mode<0 || layering_mode>11)
154 die ("Invalid mode (0..11) %s", argv[7]);
155
156 if (argc != 8+mode_to_num_layers[layering_mode])
157 die ("Invalid number of arguments");
158
159 if (!vpx_img_alloc (&raw, VPX_IMG_FMT_I420, width, height, 32))
160 die ("Failed to allocate image", width, height);
161
162 printf("Using %s\n",vpx_codec_iface_name(interface));
163
164 /* Populate encoder configuration */
165 res = vpx_codec_enc_config_default(interface, &cfg, 0);
166 if(res) {
167 printf("Failed to get config: %s\n", vpx_codec_err_to_string(res));
168 return EXIT_FAILURE;
169 }
170
171 /* Update the default configuration with our settings */
172 cfg.g_w = width;
173 cfg.g_h = height;
174
175 /* Timebase format e.g. 30fps: numerator=1, demoninator=30 */
176 if (!sscanf (argv[5], "%d", &cfg.g_timebase.num ))
177 die ("Invalid timebase numerator %s", argv[5]);
178 if (!sscanf (argv[6], "%d", &cfg.g_timebase.den ))
179 die ("Invalid timebase denominator %s", argv[6]);
180
181 for (i=8; i<8+mode_to_num_layers[layering_mode]; i++)
182 if (!sscanf(argv[i], "%ud", &cfg.ts_target_bitrate[i-8]))
183 die ("Invalid data rate %s", argv[i]);
184
185 /* Real time parameters */
186 cfg.rc_dropframe_thresh = 0;
187 cfg.rc_end_usage = VPX_CBR;
188 cfg.rc_resize_allowed = 0;
189 cfg.rc_min_quantizer = 2;
190 cfg.rc_max_quantizer = 56;
191 cfg.rc_undershoot_pct = 100;
192 cfg.rc_overshoot_pct = 15;
193 cfg.rc_buf_initial_sz = 500;
194 cfg.rc_buf_optimal_sz = 600;
195 cfg.rc_buf_sz = 1000;
196
197 /* Enable error resilient mode */
198 cfg.g_error_resilient = 1;
199 cfg.g_lag_in_frames = 0;
200 cfg.kf_mode = VPX_KF_DISABLED;
201
202 /* Disable automatic keyframe placement */
203 cfg.kf_min_dist = cfg.kf_max_dist = 3000;
204
205 /* Default setting for bitrate: used in special case of 1 layer (case 0). */
206 cfg.rc_target_bitrate = cfg.ts_target_bitrate[0];
207
208 /* Temporal scaling parameters: */
209 /* NOTE: The 3 prediction frames cannot be used interchangeably due to
210 * differences in the way they are handled throughout the code. The
211 * frames should be allocated to layers in the order LAST, GF, ARF.
212 * Other combinations work, but may produce slightly inferior results.
213 */
214 switch (layering_mode)
215 {
216 case 0:
217 {
218 /* 1-layer */
219 int ids[1] = {0};
220 cfg.ts_number_layers = 1;
221 cfg.ts_periodicity = 1;
222 cfg.ts_rate_decimator[0] = 1;
223 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
224
225 flag_periodicity = cfg.ts_periodicity;
226
227 // Update L only.
228 layer_flags[0] = VPX_EFLAG_FORCE_KF |
229 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
230 break;
231 }
232 case 1:
233 {
234 /* 2-layers, 2-frame period */
235 int ids[2] = {0,1};
236 cfg.ts_number_layers = 2;
237 cfg.ts_periodicity = 2;
238 cfg.ts_rate_decimator[0] = 2;
239 cfg.ts_rate_decimator[1] = 1;
240 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
241
242 flag_periodicity = cfg.ts_periodicity;
243 #if 1
244 /* 0=L, 1=GF, Intra-layer prediction enabled */
245 layer_flags[0] = VPX_EFLAG_FORCE_KF |
246 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
247 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
248 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
249 VP8_EFLAG_NO_REF_ARF;
250 #else
251 /* 0=L, 1=GF, Intra-layer prediction disabled */
252 layer_flags[0] = VPX_EFLAG_FORCE_KF |
253 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
254 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
255 layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
256 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST;
257 #endif
258 break;
259 }
260
261 case 2:
262 {
263 /* 2-layers, 3-frame period */
264 int ids[3] = {0,1,1};
265 cfg.ts_number_layers = 2;
266 cfg.ts_periodicity = 3;
267 cfg.ts_rate_decimator[0] = 3;
268 cfg.ts_rate_decimator[1] = 1;
269 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
270
271 flag_periodicity = cfg.ts_periodicity;
272
273 /* 0=L, 1=GF, Intra-layer prediction enabled */
274 layer_flags[0] = VPX_EFLAG_FORCE_KF |
275 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
276 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
277 layer_flags[1] =
278 layer_flags[2] = VP8_EFLAG_NO_REF_GF |
279 VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
280 VP8_EFLAG_NO_UPD_LAST;
281 break;
282 }
283
284 case 3:
285 {
286 /* 3-layers, 6-frame period */
287 int ids[6] = {0,2,2,1,2,2};
288 cfg.ts_number_layers = 3;
289 cfg.ts_periodicity = 6;
290 cfg.ts_rate_decimator[0] = 6;
291 cfg.ts_rate_decimator[1] = 3;
292 cfg.ts_rate_decimator[2] = 1;
293 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
294
295 flag_periodicity = cfg.ts_periodicity;
296
297 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */
298 layer_flags[0] = VPX_EFLAG_FORCE_KF |
299 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
300 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
301 layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
302 VP8_EFLAG_NO_UPD_LAST;
303 layer_flags[1] =
304 layer_flags[2] =
305 layer_flags[4] =
306 layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST;
307 break;
308 }
309
310 case 4:
311 {
312 /* 3-layers, 4-frame period */
313 int ids[4] = {0,2,1,2};
314 cfg.ts_number_layers = 3;
315 cfg.ts_periodicity = 4;
316 cfg.ts_rate_decimator[0] = 4;
317 cfg.ts_rate_decimator[1] = 2;
318 cfg.ts_rate_decimator[2] = 1;
319 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
320
321 flag_periodicity = cfg.ts_periodicity;
322
323 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled */
324 layer_flags[0] = VPX_EFLAG_FORCE_KF |
325 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
326 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
327 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
328 VP8_EFLAG_NO_UPD_ARF |
329 VP8_EFLAG_NO_UPD_LAST;
330 layer_flags[1] =
331 layer_flags[3] = VP8_EFLAG_NO_REF_ARF |
332 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
333 VP8_EFLAG_NO_UPD_ARF;
334 break;
335 }
336
337 case 5:
338 {
339 /* 3-layers, 4-frame period */
340 int ids[4] = {0,2,1,2};
341 cfg.ts_number_layers = 3;
342 cfg.ts_periodicity = 4;
343 cfg.ts_rate_decimator[0] = 4;
344 cfg.ts_rate_decimator[1] = 2;
345 cfg.ts_rate_decimator[2] = 1;
346 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
347
348 flag_periodicity = cfg.ts_periodicity;
349
350 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1,
351 * disabled in layer 2
352 */
353 layer_flags[0] = VPX_EFLAG_FORCE_KF |
354 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
355 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
356 layer_flags[2] = VP8_EFLAG_NO_REF_ARF |
357 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
358 layer_flags[1] =
359 layer_flags[3] = VP8_EFLAG_NO_REF_ARF |
360 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
361 VP8_EFLAG_NO_UPD_ARF;
362 break;
363 }
364
365 case 6:
366 {
367 /* 3-layers, 4-frame period */
368 int ids[4] = {0,2,1,2};
369 cfg.ts_number_layers = 3;
370 cfg.ts_periodicity = 4;
371 cfg.ts_rate_decimator[0] = 4;
372 cfg.ts_rate_decimator[1] = 2;
373 cfg.ts_rate_decimator[2] = 1;
374 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
375
376 flag_periodicity = cfg.ts_periodicity;
377
378 /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */
379 layer_flags[0] = VPX_EFLAG_FORCE_KF |
380 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
381 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
382 layer_flags[2] = VP8_EFLAG_NO_REF_ARF |
383 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
384 layer_flags[1] =
385 layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
386 break;
387 }
388
389 case 7:
390 {
391 /* NOTE: Probably of academic interest only */
392
393 /* 5-layers, 16-frame period */
394 int ids[16] = {0,4,3,4,2,4,3,4,1,4,3,4,2,4,3,4};
395 cfg.ts_number_layers = 5;
396 cfg.ts_periodicity = 16;
397 cfg.ts_rate_decimator[0] = 16;
398 cfg.ts_rate_decimator[1] = 8;
399 cfg.ts_rate_decimator[2] = 4;
400 cfg.ts_rate_decimator[3] = 2;
401 cfg.ts_rate_decimator[4] = 1;
402 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
403
404 flag_periodicity = cfg.ts_periodicity;
405
406 layer_flags[0] = VPX_EFLAG_FORCE_KF;
407 layer_flags[1] =
408 layer_flags[3] =
409 layer_flags[5] =
410 layer_flags[7] =
411 layer_flags[9] =
412 layer_flags[11] =
413 layer_flags[13] =
414 layer_flags[15] = VP8_EFLAG_NO_UPD_LAST |
415 VP8_EFLAG_NO_UPD_GF |
416 VP8_EFLAG_NO_UPD_ARF;
417 layer_flags[2] =
418 layer_flags[6] =
419 layer_flags[10] =
420 layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF;
421 layer_flags[4] =
422 layer_flags[12] = VP8_EFLAG_NO_REF_LAST |
423 VP8_EFLAG_NO_UPD_ARF;
424 layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF;
425 break;
426 }
427
428 case 8:
429 {
430 /* 2-layers, with sync point at first frame of layer 1. */
431 int ids[2] = {0,1};
432 cfg.ts_number_layers = 2;
433 cfg.ts_periodicity = 2;
434 cfg.ts_rate_decimator[0] = 2;
435 cfg.ts_rate_decimator[1] = 1;
436 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
437
438 flag_periodicity = 8;
439
440 /* 0=L, 1=GF */
441 // ARF is used as predictor for all frames, and is only updated on
442 // key frame. Sync point every 8 frames.
443
444 // Layer 0: predict from L and ARF, update L and G.
445 layer_flags[0] = VPX_EFLAG_FORCE_KF |
446 VP8_EFLAG_NO_REF_GF |
447 VP8_EFLAG_NO_UPD_ARF;
448
449 // Layer 1: sync point: predict from L and ARF, and update G.
450 layer_flags[1] = VP8_EFLAG_NO_REF_GF |
451 VP8_EFLAG_NO_UPD_LAST |
452 VP8_EFLAG_NO_UPD_ARF;
453
454 // Layer 0, predict from L and ARF, update L.
455 layer_flags[2] = VP8_EFLAG_NO_REF_GF |
456 VP8_EFLAG_NO_UPD_GF |
457 VP8_EFLAG_NO_UPD_ARF;
458
459 // Layer 1: predict from L, G and ARF, and update G.
460 layer_flags[3] = VP8_EFLAG_NO_UPD_ARF |
461 VP8_EFLAG_NO_UPD_LAST |
462 VP8_EFLAG_NO_UPD_ENTROPY;
463
464 // Layer 0
465 layer_flags[4] = layer_flags[2];
466
467 // Layer 1
468 layer_flags[5] = layer_flags[3];
469
470 // Layer 0
471 layer_flags[6] = layer_flags[4];
472
473 // Layer 1
474 layer_flags[7] = layer_flags[5];
475 break;
476 }
477
478 case 9:
479 {
480 /* 3-layers */
481 // Sync points for layer 1 and 2 every 8 frames.
482
483 int ids[4] = {0,2,1,2};
484 cfg.ts_number_layers = 3;
485 cfg.ts_periodicity = 4;
486 cfg.ts_rate_decimator[0] = 4;
487 cfg.ts_rate_decimator[1] = 2;
488 cfg.ts_rate_decimator[2] = 1;
489 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
490
491 flag_periodicity = 8;
492
493 /* 0=L, 1=GF, 2=ARF */
494 layer_flags[0] = VPX_EFLAG_FORCE_KF |
495 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
496 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
497 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
498 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
499 layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
500 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
501 layer_flags[3] =
502 layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
503 layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
504 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
505 layer_flags[6] = VP8_EFLAG_NO_REF_ARF |
506 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
507 layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
508 VP8_EFLAG_NO_UPD_ARF |
509 VP8_EFLAG_NO_UPD_ENTROPY;
510 break;
511 }
512 case 10:
513 {
514 // 3-layers structure where ARF is used as predictor for all frames,
515 // and is only updated on key frame.
516 // Sync points for layer 1 and 2 every 8 frames.
517
518 int ids[4] = {0,2,1,2};
519 cfg.ts_number_layers = 3;
520 cfg.ts_periodicity = 4;
521 cfg.ts_rate_decimator[0] = 4;
522 cfg.ts_rate_decimator[1] = 2;
523 cfg.ts_rate_decimator[2] = 1;
524 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
525
526 flag_periodicity = 8;
527
528 /* 0=L, 1=GF, 2=ARF */
529
530 // Layer 0: predict from L and ARF; update L and G.
531 layer_flags[0] = VPX_EFLAG_FORCE_KF |
532 VP8_EFLAG_NO_UPD_ARF |
533 VP8_EFLAG_NO_REF_GF;
534
535 // Layer 2: sync point: predict from L and ARF; update none.
536 layer_flags[1] = VP8_EFLAG_NO_REF_GF |
537 VP8_EFLAG_NO_UPD_GF |
538 VP8_EFLAG_NO_UPD_ARF |
539 VP8_EFLAG_NO_UPD_LAST |
540 VP8_EFLAG_NO_UPD_ENTROPY;
541
542 // Layer 1: sync point: predict from L and ARF; update G.
543 layer_flags[2] = VP8_EFLAG_NO_REF_GF |
544 VP8_EFLAG_NO_UPD_ARF |
545 VP8_EFLAG_NO_UPD_LAST;
546
547 // Layer 2: predict from L, G, ARF; update none.
548 layer_flags[3] = VP8_EFLAG_NO_UPD_GF |
549 VP8_EFLAG_NO_UPD_ARF |
550 VP8_EFLAG_NO_UPD_LAST |
551 VP8_EFLAG_NO_UPD_ENTROPY;
552
553 // Layer 0: predict from L and ARF; update L.
554 layer_flags[4] = VP8_EFLAG_NO_UPD_GF |
555 VP8_EFLAG_NO_UPD_ARF |
556 VP8_EFLAG_NO_REF_GF;
557
558 // Layer 2: predict from L, G, ARF; update none.
559 layer_flags[5] = layer_flags[3];
560
561 // Layer 1: predict from L, G, ARF; update G.
562 layer_flags[6] = VP8_EFLAG_NO_UPD_ARF |
563 VP8_EFLAG_NO_UPD_LAST;
564
565 // Layer 2: predict from L, G, ARF; update none.
566 layer_flags[7] = layer_flags[3];
567 break;
568 }
569 case 11:
570 default:
571 {
572 // 3-layers structure as in case 10, but no sync/refresh points for
573 // layer 1 and 2.
574
575 int ids[4] = {0,2,1,2};
576 cfg.ts_number_layers = 3;
577 cfg.ts_periodicity = 4;
578 cfg.ts_rate_decimator[0] = 4;
579 cfg.ts_rate_decimator[1] = 2;
580 cfg.ts_rate_decimator[2] = 1;
581 memcpy(cfg.ts_layer_id, ids, sizeof(ids));
582
583 flag_periodicity = 8;
584
585 /* 0=L, 1=GF, 2=ARF */
586
587 // Layer 0: predict from L and ARF; update L.
588 layer_flags[0] = VP8_EFLAG_NO_UPD_GF |
589 VP8_EFLAG_NO_UPD_ARF |
590 VP8_EFLAG_NO_REF_GF;
591 layer_flags[4] = layer_flags[0];
592
593 // Layer 1: predict from L, G, ARF; update G.
594 layer_flags[2] = VP8_EFLAG_NO_UPD_ARF |
595 VP8_EFLAG_NO_UPD_LAST;
596 layer_flags[6] = layer_flags[2];
597
598 // Layer 2: predict from L, G, ARF; update none.
599 layer_flags[1] = VP8_EFLAG_NO_UPD_GF |
600 VP8_EFLAG_NO_UPD_ARF |
601 VP8_EFLAG_NO_UPD_LAST |
602 VP8_EFLAG_NO_UPD_ENTROPY;
603 layer_flags[3] = layer_flags[1];
604 layer_flags[5] = layer_flags[1];
605 layer_flags[7] = layer_flags[1];
606 break;
607 }
608 }
609
610 /* Open input file */
611 if(!(infile = fopen(argv[1], "rb")))
612 die("Failed to open %s for reading", argv[1]);
613
614 /* Open an output file for each stream */
615 for (i=0; i<cfg.ts_number_layers; i++)
616 {
617 char file_name[512];
618 sprintf (file_name, "%s_%d.ivf", argv[2], i);
619 if (!(outfile[i] = fopen(file_name, "wb")))
620 die("Failed to open %s for writing", file_name);
621 write_ivf_file_header(outfile[i], &cfg, 0);
622 }
623
624 /* Initialize codec */
625 if (vpx_codec_enc_init (&codec, interface, &cfg, 0))
626 die_codec (&codec, "Failed to initialize encoder");
627
628 /* Cap CPU & first I-frame size */
629 vpx_codec_control (&codec, VP8E_SET_CPUUSED, -6);
630 vpx_codec_control (&codec, VP8E_SET_STATIC_THRESHOLD, 1);
631 vpx_codec_control (&codec, VP8E_SET_NOISE_SENSITIVITY, 1);
632 vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1);
633
634 max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5)
635 * ((double) cfg.g_timebase.den / cfg.g_timebase.num)
636 / 10.0);
637 /* printf ("max_intra_size_pct=%d\n", max_intra_size_pct); */
638
639 vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT,
640 max_intra_size_pct);
641
642 frame_avail = 1;
643 while (frame_avail || got_data) {
644 vpx_codec_iter_t iter = NULL;
645 const vpx_codec_cx_pkt_t *pkt;
646
647 flags = layer_flags[frame_cnt % flag_periodicity];
648
649 frame_avail = read_frame(infile, &raw);
650 if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts,
651 1, flags, VPX_DL_REALTIME))
652 die_codec(&codec, "Failed to encode frame");
653
654 /* Reset KF flag */
655 if (layering_mode != 7)
656 layer_flags[0] &= ~VPX_EFLAG_FORCE_KF;
657
658 got_data = 0;
659 while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
660 got_data = 1;
661 switch (pkt->kind) {
662 case VPX_CODEC_CX_FRAME_PKT:
663 for (i=cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
664 i<cfg.ts_number_layers; i++)
665 {
666 write_ivf_frame_header(outfile[i], pkt);
667 (void) fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz,
668 outfile[i]);
669 frames_in_layer[i]++;
670 }
671 break;
672 default:
673 break;
674 }
675 }
676 frame_cnt++;
677 pts += frame_duration;
678 }
679 fclose (infile);
680
681 printf ("Processed %d frames.\n",frame_cnt-1);
682 if (vpx_codec_destroy(&codec))
683 die_codec (&codec, "Failed to destroy codec");
684
685 /* Try to rewrite the output file headers with the actual frame count */
686 for (i=0; i<cfg.ts_number_layers; i++)
687 {
688 if (!fseek(outfile[i], 0, SEEK_SET))
689 write_ivf_file_header (outfile[i], &cfg, frames_in_layer[i]);
690 fclose (outfile[i]);
691 }
692
693 return EXIT_SUCCESS;
694 }
vpx_codec_enc_cfg::rc_buf_initial_sz
unsigned int rc_buf_initial_sz
Decoder Buffer Initial Size.
Definition: vpx_encoder.h:539
vpx_codec_enc_cfg::ts_number_layers
unsigned int ts_number_layers
Number of coding layers.
Definition: vpx_encoder.h:630
VP8E_SET_CPUUSED
control function to set vp8 encoder cpuused
Definition: vp8cx.h:151
VP8_EFLAG_NO_REF_LAST
#define VP8_EFLAG_NO_REF_LAST
Don&#39;t reference the last frame.
Definition: vp8cx.h:57
VP8_EFLAG_NO_UPD_GF
#define VP8_EFLAG_NO_UPD_GF
Don&#39;t update the golden frame.
Definition: vp8cx.h:91
vpx_image
Image Descriptor.
Definition: vpx_image.h:99
vpx_encoder.h
Describes the encoder algorithm interface to applications.
vpx_codec_iface_name
const char * vpx_codec_iface_name(vpx_codec_iface_t *iface)
Return the name for a given interface.
vpx_codec_err_to_string
const char * vpx_codec_err_to_string(vpx_codec_err_t err)
Convert error number to printable string.
VPX_TS_MAX_LAYERS
#define VPX_TS_MAX_LAYERS
Definition: vpx_encoder.h:40
vpx_codec_enc_cfg::g_timebase
struct vpx_rational g_timebase
Stream timebase units.
Definition: vpx_encoder.h:345
VPX_CBR
Definition: vpx_encoder.h:239
vpx_codec_enc_cfg::rc_buf_sz
unsigned int rc_buf_sz
Decoder Buffer Size.
Definition: vpx_encoder.h:529
VP8_EFLAG_NO_REF_GF
#define VP8_EFLAG_NO_REF_GF
Don&#39;t reference the golden frame.
Definition: vp8cx.h:66
vpx_codec_enc_cfg::kf_mode
enum vpx_kf_mode kf_mode
Keyframe placement mode.
Definition: vpx_encoder.h:594
vpx_rational::den
int den
Definition: vpx_encoder.h:224
vpx_codec_encode
vpx_codec_err_t vpx_codec_encode(vpx_codec_ctx_t *ctx, const vpx_image_t *img, vpx_codec_pts_t pts, unsigned long duration, vpx_enc_frame_flags_t flags, unsigned long deadline)
Encode a frame.
vpx_codec_enc_cfg::rc_max_quantizer
unsigned int rc_max_quantizer
Maximum (Worst Quality) Quantizer.
Definition: vpx_encoder.h:481
vpx_codec_enc_cfg::rc_min_quantizer
unsigned int rc_min_quantizer
Minimum (Best Quality) Quantizer.
Definition: vpx_encoder.h:470
vpx_codec_enc_cfg::kf_max_dist
unsigned int kf_max_dist
Keyframe maximum interval.
Definition: vpx_encoder.h:614
vpx_codec_enc_cfg::g_lag_in_frames
unsigned int g_lag_in_frames
Allow lagged encoding.
Definition: vpx_encoder.h:377
vpx_codec_enc_cfg
Encoder configuration structure.
Definition: vpx_encoder.h:277
VP8E_SET_MAX_INTRA_BITRATE_PCT
Max data rate for Intra frames.
Definition: vp8cx.h:188
vpx_codec_cx_pkt
Encoder output packet.
Definition: vpx_encoder.h:181
vpx_codec_enc_cfg::rc_overshoot_pct
unsigned int rc_overshoot_pct
Rate control adaptation overshoot control.
Definition: vpx_encoder.h:512
vpx_codec_enc_cfg::ts_rate_decimator
unsigned int ts_rate_decimator[5]
Frame rate decimation factor for each layer.
Definition: vpx_encoder.h:643
vpx_codec_enc_cfg::rc_buf_optimal_sz
unsigned int rc_buf_optimal_sz
Decoder Buffer Optimal Size.
Definition: vpx_encoder.h:549
vpx_codec_enc_cfg::kf_min_dist
unsigned int kf_min_dist
Keyframe minimum interval.
Definition: vpx_encoder.h:604
VPX_RC_LAST_PASS
Definition: vpx_encoder.h:232
vpx_codec_enc_cfg::ts_layer_id
unsigned int ts_layer_id[16]
Template defining the membership of frames to coding layers.
Definition: vpx_encoder.h:661
vpx_codec_cx_pkt::frame
struct vpx_codec_cx_pkt::@1::@2 frame
vpx_img_alloc
vpx_image_t * vpx_img_alloc(vpx_image_t *img, vpx_img_fmt_t fmt, unsigned int d_w, unsigned int d_h, unsigned int align)
Open a descriptor, allocating storage for the underlying image.
VPX_IMG_FMT_I420
Definition: vpx_image.h:56
vpx_codec_enc_cfg::g_w
unsigned int g_w
Width of the frame.
Definition: vpx_encoder.h:320
vpx_codec_enc_cfg::ts_target_bitrate
unsigned int ts_target_bitrate[5]
Target bitrate for each layer.
Definition: vpx_encoder.h:636
vpx_codec_enc_cfg::rc_undershoot_pct
unsigned int rc_undershoot_pct
Rate control adaptation undershoot control.
Definition: vpx_encoder.h:499
vpx_codec_enc_cfg::g_h
unsigned int g_h
Height of the frame.
Definition: vpx_encoder.h:330
vpx_codec_cx_pkt::kind
enum vpx_codec_cx_pkt_kind kind
Definition: vpx_encoder.h:182
vpx_codec_enc_cfg::rc_dropframe_thresh
unsigned int rc_dropframe_thresh
Temporal resampling configuration, if supported by the codec.
Definition: vpx_encoder.h:400
VP8_EFLAG_NO_UPD_LAST
#define VP8_EFLAG_NO_UPD_LAST
Don&#39;t update the last frame.
Definition: vp8cx.h:83
vpx_image::planes
unsigned char * planes[4]
Definition: vpx_image.h:127
VP8E_SET_TOKEN_PARTITIONS
Definition: vp8cx.h:156
vpx_codec_enc_cfg::rc_target_bitrate
unsigned int rc_target_bitrate
Target data rate.
Definition: vpx_encoder.h:454
VPX_DL_REALTIME
#define VPX_DL_REALTIME
Definition: vpx_encoder.h:804
vpx_rational::num
int num
Definition: vpx_encoder.h:223
VP8E_SET_NOISE_SENSITIVITY
Definition: vp8cx.h:153
vpx_codec_enc_config_default
vpx_codec_err_t vpx_codec_enc_config_default(vpx_codec_iface_t *iface, vpx_codec_enc_cfg_t *cfg, unsigned int usage)
Get a default configuration.
vpx_codec_enc_cfg::g_pass
enum vpx_enc_pass g_pass
Multi-pass Encoding Mode.
Definition: vpx_encoder.h:362
vpx_codec_error_detail
const char * vpx_codec_error_detail(vpx_codec_ctx_t *ctx)
Retrieve detailed error information for codec context.
vp8cx.h
Provides definitions for using the VP8 encoder algorithm within the vpx Codec Interface.
vpx_codec_enc_init
#define vpx_codec_enc_init(ctx, iface, cfg, flags)
Convenience macro for vpx_codec_enc_init_ver()
Definition: vpx_encoder.h:702
vpx_codec_enc_cfg::rc_resize_allowed
unsigned int rc_resize_allowed
Enable/disable spatial resampling, if supported by the codec.
Definition: vpx_encoder.h:410
vpx_image::h
unsigned int h
Definition: vpx_image.h:104
vpx_codec_err_t
vpx_codec_err_t
Algorithm return codes.
Definition: vpx_codec.h:89
vpx_codec_get_cx_data
const vpx_codec_cx_pkt_t * vpx_codec_get_cx_data(vpx_codec_ctx_t *ctx, vpx_codec_iter_t *iter)
Encoded data iterator.
vpx_codec_cx_pkt::data
union vpx_codec_cx_pkt::@1 data
VPX_KF_DISABLED
Definition: vpx_encoder.h:256
vpx_codec_pts_t
int64_t vpx_codec_pts_t
Time Stamp Type.
Definition: vpx_encoder.h:112
VPX_TS_MAX_PERIODICITY
#define VPX_TS_MAX_PERIODICITY
Definition: vpx_encoder.h:37
vpx_codec_control
#define vpx_codec_control(ctx, id, data)
vpx_codec_control wrapper macro
Definition: vpx_codec.h:398
vpx_codec_enc_cfg::ts_periodicity
unsigned int ts_periodicity
Length of the sequence defining frame layer membership.
Definition: vpx_encoder.h:652
VP8_EFLAG_NO_REF_ARF
#define VP8_EFLAG_NO_REF_ARF
Don&#39;t reference the alternate reference frame.
Definition: vp8cx.h:75
vpx_codec_destroy
vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx)
Destroy a codec instance.
vpx_image::w
unsigned int w
Definition: vpx_image.h:103
VP8E_SET_STATIC_THRESHOLD
Definition: vp8cx.h:155
vpx_codec_error
const char * vpx_codec_error(vpx_codec_ctx_t *ctx)
Retrieve error synopsis for codec context.
VPX_EFLAG_FORCE_KF
#define VPX_EFLAG_FORCE_KF
Definition: vpx_encoder.h:268
vpx_codec_iter_t
const void * vpx_codec_iter_t
Iterator.
Definition: vpx_codec.h:190
VPX_CODEC_CX_FRAME_PKT
Definition: vpx_encoder.h:169
vpx_codec_enc_cfg::g_error_resilient
vpx_codec_er_flags_t g_error_resilient
Enable error resilient modes.
Definition: vpx_encoder.h:354
VP8_EFLAG_NO_UPD_ARF
#define VP8_EFLAG_NO_UPD_ARF
Don&#39;t update the alternate reference frame.
Definition: vp8cx.h:99
VP8_EFLAG_NO_UPD_ENTROPY
#define VP8_EFLAG_NO_UPD_ENTROPY
Disable entropy update.
Definition: vp8cx.h:123
vpx_codec_enc_cfg::rc_end_usage
enum vpx_rc_mode rc_end_usage
Rate control algorithm to use.
Definition: vpx_encoder.h:439
VPX_RC_ONE_PASS
Definition: vpx_encoder.h:230
vpx_codec_ctx
Codec context structure.
Definition: vpx_codec.h:201