1 /*
2 * Copyright (c) 2010 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 * This is an example demonstrating multi-resolution encoding in VP8.
13 * High-resolution input video is down-sampled to lower-resolutions. The
14 * encoder then encodes the video and outputs multiple bitstreams with
15 * different resolutions.
16 *
17 * This test also allows for settings temporal layers for each spatial layer.
18 * Different number of temporal layers per spatial stream may be used.
19 * Currently up to 3 temporal layers per spatial stream (encoder) are supported
20 * in this test.
21 */
22
23 #include "./vpx_config.h"
24
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <stdarg.h>
28 #include <string.h>
29 #include <math.h>
30 #include <assert.h>
31 #include <sys/time.h>
32 #include "vpx_ports/vpx_timer.h"
33 #include "vpx/vpx_encoder.h"
34 #include "vpx/vp8cx.h"
35 #include "vpx_ports/mem_ops.h"
36 #include "../tools_common.h"
37 #define interface (vpx_codec_vp8_cx())
38 #define fourcc 0x30385056
39
usage_exit(void)40 void usage_exit(void) { exit(EXIT_FAILURE); }
41
42 /*
43 * The input video frame is downsampled several times to generate a multi-level
44 * hierarchical structure. NUM_ENCODERS is defined as the number of encoding
45 * levels required. For example, if the size of input video is 1280x720,
46 * NUM_ENCODERS is 3, and down-sampling factor is 2, the encoder outputs 3
47 * bitstreams with resolution of 1280x720(level 0), 640x360(level 1), and
48 * 320x180(level 2) respectively.
49 */
50
51 /* Number of encoders (spatial resolutions) used in this test. */
52 #define NUM_ENCODERS 3
53
54 /* Maximum number of temporal layers allowed for this test. */
55 #define MAX_NUM_TEMPORAL_LAYERS 3
56
57 /* This example uses the scaler function in libyuv. */
58 #include "third_party/libyuv/include/libyuv/basic_types.h"
59 #include "third_party/libyuv/include/libyuv/scale.h"
60 #include "third_party/libyuv/include/libyuv/cpu_id.h"
61
62 int (*read_frame_p)(FILE *f, vpx_image_t *img);
63
mulres_read_frame(FILE * f,vpx_image_t * img)64 static int mulres_read_frame(FILE *f, vpx_image_t *img) {
65 size_t nbytes, to_read;
66 int res = 1;
67
68 to_read = img->w * img->h * 3 / 2;
69 nbytes = fread(img->planes[0], 1, to_read, f);
70 if (nbytes != to_read) {
71 res = 0;
72 if (nbytes > 0)
73 printf("Warning: Read partial frame. Check your width & height!\n");
74 }
75 return res;
76 }
77
mulres_read_frame_by_row(FILE * f,vpx_image_t * img)78 static int mulres_read_frame_by_row(FILE *f, vpx_image_t *img) {
79 size_t nbytes, to_read;
80 int res = 1;
81 int plane;
82
83 for (plane = 0; plane < 3; plane++) {
84 unsigned char *ptr;
85 int w = (plane ? (1 + img->d_w) / 2 : img->d_w);
86 int h = (plane ? (1 + img->d_h) / 2 : img->d_h);
87 int r;
88
89 /* Determine the correct plane based on the image format. The for-loop
90 * always counts in Y,U,V order, but this may not match the order of
91 * the data on disk.
92 */
93 switch (plane) {
94 case 1:
95 ptr = img->planes[img->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_V
96 : VPX_PLANE_U];
97 break;
98 case 2:
99 ptr = img->planes[img->fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_U
100 : VPX_PLANE_V];
101 break;
102 default: ptr = img->planes[plane];
103 }
104
105 for (r = 0; r < h; r++) {
106 to_read = w;
107
108 nbytes = fread(ptr, 1, to_read, f);
109 if (nbytes != to_read) {
110 res = 0;
111 if (nbytes > 0)
112 printf("Warning: Read partial frame. Check your width & height!\n");
113 break;
114 }
115
116 ptr += img->stride[plane];
117 }
118 if (!res) break;
119 }
120
121 return res;
122 }
123
write_ivf_file_header(FILE * outfile,const vpx_codec_enc_cfg_t * cfg,int frame_cnt)124 static void write_ivf_file_header(FILE *outfile, const vpx_codec_enc_cfg_t *cfg,
125 int frame_cnt) {
126 char header[32];
127
128 if (cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS) return;
129 header[0] = 'D';
130 header[1] = 'K';
131 header[2] = 'I';
132 header[3] = 'F';
133 mem_put_le16(header + 4, 0); /* version */
134 mem_put_le16(header + 6, 32); /* headersize */
135 mem_put_le32(header + 8, fourcc); /* headersize */
136 mem_put_le16(header + 12, cfg->g_w); /* width */
137 mem_put_le16(header + 14, cfg->g_h); /* height */
138 mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
139 mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
140 mem_put_le32(header + 24, frame_cnt); /* length */
141 mem_put_le32(header + 28, 0); /* unused */
142
143 (void)fwrite(header, 1, 32, outfile);
144 }
145
write_ivf_frame_header(FILE * outfile,const vpx_codec_cx_pkt_t * pkt)146 static void write_ivf_frame_header(FILE *outfile,
147 const vpx_codec_cx_pkt_t *pkt) {
148 char header[12];
149 vpx_codec_pts_t pts;
150
151 if (pkt->kind != VPX_CODEC_CX_FRAME_PKT) return;
152
153 pts = pkt->data.frame.pts;
154 mem_put_le32(header, (int)pkt->data.frame.sz);
155 mem_put_le32(header + 4, pts & 0xFFFFFFFF);
156 mem_put_le32(header + 8, pts >> 32);
157
158 (void)fwrite(header, 1, 12, outfile);
159 }
160
161 /* Temporal scaling parameters */
162 /* This sets all the temporal layer parameters given |num_temporal_layers|,
163 * including the target bit allocation across temporal layers. Bit allocation
164 * parameters will be passed in as user parameters in another version.
165 */
set_temporal_layer_pattern(int num_temporal_layers,vpx_codec_enc_cfg_t * cfg,int bitrate,int * layer_flags)166 static void set_temporal_layer_pattern(int num_temporal_layers,
167 vpx_codec_enc_cfg_t *cfg, int bitrate,
168 int *layer_flags) {
169 assert(num_temporal_layers <= MAX_NUM_TEMPORAL_LAYERS);
170 switch (num_temporal_layers) {
171 case 1: {
172 /* 1-layer */
173 cfg->ts_number_layers = 1;
174 cfg->ts_periodicity = 1;
175 cfg->ts_rate_decimator[0] = 1;
176 cfg->ts_layer_id[0] = 0;
177 cfg->ts_target_bitrate[0] = bitrate;
178
179 // Update L only.
180 layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
181 break;
182 }
183
184 case 2: {
185 /* 2-layers, with sync point at first frame of layer 1. */
186 cfg->ts_number_layers = 2;
187 cfg->ts_periodicity = 2;
188 cfg->ts_rate_decimator[0] = 2;
189 cfg->ts_rate_decimator[1] = 1;
190 cfg->ts_layer_id[0] = 0;
191 cfg->ts_layer_id[1] = 1;
192 // Use 60/40 bit allocation as example.
193 cfg->ts_target_bitrate[0] = (int)(0.6f * bitrate);
194 cfg->ts_target_bitrate[1] = bitrate;
195
196 /* 0=L, 1=GF */
197 // ARF is used as predictor for all frames, and is only updated on
198 // key frame. Sync point every 8 frames.
199
200 // Layer 0: predict from L and ARF, update L and G.
201 layer_flags[0] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF;
202
203 // Layer 1: sync point: predict from L and ARF, and update G.
204 layer_flags[1] =
205 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
206
207 // Layer 0, predict from L and ARF, update L.
208 layer_flags[2] =
209 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
210
211 // Layer 1: predict from L, G and ARF, and update G.
212 layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
213 VP8_EFLAG_NO_UPD_ENTROPY;
214
215 // Layer 0
216 layer_flags[4] = layer_flags[2];
217
218 // Layer 1
219 layer_flags[5] = layer_flags[3];
220
221 // Layer 0
222 layer_flags[6] = layer_flags[4];
223
224 // Layer 1
225 layer_flags[7] = layer_flags[5];
226 break;
227 }
228
229 case 3:
230 default: {
231 // 3-layers structure where ARF is used as predictor for all frames,
232 // and is only updated on key frame.
233 // Sync points for layer 1 and 2 every 8 frames.
234 cfg->ts_number_layers = 3;
235 cfg->ts_periodicity = 4;
236 cfg->ts_rate_decimator[0] = 4;
237 cfg->ts_rate_decimator[1] = 2;
238 cfg->ts_rate_decimator[2] = 1;
239 cfg->ts_layer_id[0] = 0;
240 cfg->ts_layer_id[1] = 2;
241 cfg->ts_layer_id[2] = 1;
242 cfg->ts_layer_id[3] = 2;
243 // Use 45/20/35 bit allocation as example.
244 cfg->ts_target_bitrate[0] = (int)(0.45f * bitrate);
245 cfg->ts_target_bitrate[1] = (int)(0.65f * bitrate);
246 cfg->ts_target_bitrate[2] = bitrate;
247
248 /* 0=L, 1=GF, 2=ARF */
249
250 // Layer 0: predict from L and ARF; update L and G.
251 layer_flags[0] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF;
252
253 // Layer 2: sync point: predict from L and ARF; update none.
254 layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
255 VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
256 VP8_EFLAG_NO_UPD_ENTROPY;
257
258 // Layer 1: sync point: predict from L and ARF; update G.
259 layer_flags[2] =
260 VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
261
262 // Layer 2: predict from L, G, ARF; update none.
263 layer_flags[3] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
264 VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY;
265
266 // Layer 0: predict from L and ARF; update L.
267 layer_flags[4] =
268 VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF;
269
270 // Layer 2: predict from L, G, ARF; update none.
271 layer_flags[5] = layer_flags[3];
272
273 // Layer 1: predict from L, G, ARF; update G.
274 layer_flags[6] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
275
276 // Layer 2: predict from L, G, ARF; update none.
277 layer_flags[7] = layer_flags[3];
278 break;
279 }
280 }
281 }
282
283 /* The periodicity of the pattern given the number of temporal layers. */
284 static int periodicity_to_num_layers[MAX_NUM_TEMPORAL_LAYERS] = { 1, 8, 8 };
285
main(int argc,char ** argv)286 int main(int argc, char **argv) {
287 FILE *infile, *outfile[NUM_ENCODERS];
288 FILE *downsampled_input[NUM_ENCODERS - 1];
289 char filename[50];
290 vpx_codec_ctx_t codec[NUM_ENCODERS];
291 vpx_codec_enc_cfg_t cfg[NUM_ENCODERS];
292 int frame_cnt = 0;
293 vpx_image_t raw[NUM_ENCODERS];
294 vpx_codec_err_t res[NUM_ENCODERS];
295
296 int i;
297 int width;
298 int height;
299 int length_frame;
300 int frame_avail;
301 int got_data;
302 int flags = 0;
303 int layer_id = 0;
304
305 int layer_flags[VPX_TS_MAX_PERIODICITY * NUM_ENCODERS] = { 0 };
306 int flag_periodicity;
307
308 /*Currently, only realtime mode is supported in multi-resolution encoding.*/
309 int arg_deadline = VPX_DL_REALTIME;
310
311 /* Set show_psnr to 1/0 to show/not show PSNR. Choose show_psnr=0 if you
312 don't need to know PSNR, which will skip PSNR calculation and save
313 encoding time. */
314 int show_psnr = 0;
315 int key_frame_insert = 0;
316 uint64_t psnr_sse_total[NUM_ENCODERS] = { 0 };
317 uint64_t psnr_samples_total[NUM_ENCODERS] = { 0 };
318 double psnr_totals[NUM_ENCODERS][4] = { { 0, 0 } };
319 int psnr_count[NUM_ENCODERS] = { 0 };
320
321 int64_t cx_time = 0;
322
323 /* Set the required target bitrates for each resolution level.
324 * If target bitrate for highest-resolution level is set to 0,
325 * (i.e. target_bitrate[0]=0), we skip encoding at that level.
326 */
327 unsigned int target_bitrate[NUM_ENCODERS] = { 1000, 500, 100 };
328
329 /* Enter the frame rate of the input video */
330 int framerate = 30;
331
332 /* Set down-sampling factor for each resolution level.
333 dsf[0] controls down sampling from level 0 to level 1;
334 dsf[1] controls down sampling from level 1 to level 2;
335 dsf[2] is not used. */
336 vpx_rational_t dsf[NUM_ENCODERS] = { { 2, 1 }, { 2, 1 }, { 1, 1 } };
337
338 /* Set the number of temporal layers for each encoder/resolution level,
339 * starting from highest resoln down to lowest resoln. */
340 unsigned int num_temporal_layers[NUM_ENCODERS] = { 3, 3, 3 };
341
342 if (argc != (7 + 3 * NUM_ENCODERS))
343 die("Usage: %s <width> <height> <frame_rate> <infile> <outfile(s)> "
344 "<rate_encoder(s)> <temporal_layer(s)> <key_frame_insert> <output "
345 "psnr?> \n",
346 argv[0]);
347
348 printf("Using %s\n", vpx_codec_iface_name(interface));
349
350 width = (int)strtol(argv[1], NULL, 0);
351 height = (int)strtol(argv[2], NULL, 0);
352 framerate = (int)strtol(argv[3], NULL, 0);
353
354 if (width < 16 || width % 2 || height < 16 || height % 2)
355 die("Invalid resolution: %dx%d", width, height);
356
357 /* Open input video file for encoding */
358 if (!(infile = fopen(argv[4], "rb")))
359 die("Failed to open %s for reading", argv[4]);
360
361 /* Open output file for each encoder to output bitstreams */
362 for (i = 0; i < NUM_ENCODERS; i++) {
363 if (!target_bitrate[i]) {
364 outfile[i] = NULL;
365 continue;
366 }
367
368 if (!(outfile[i] = fopen(argv[i + 5], "wb")))
369 die("Failed to open %s for writing", argv[i + 4]);
370 }
371
372 // Bitrates per spatial layer: overwrite default rates above.
373 for (i = 0; i < NUM_ENCODERS; i++) {
374 target_bitrate[i] = (int)strtol(argv[NUM_ENCODERS + 5 + i], NULL, 0);
375 }
376
377 // Temporal layers per spatial layers: overwrite default settings above.
378 for (i = 0; i < NUM_ENCODERS; i++) {
379 num_temporal_layers[i] =
380 (int)strtol(argv[2 * NUM_ENCODERS + 5 + i], NULL, 0);
381 if (num_temporal_layers[i] < 1 || num_temporal_layers[i] > 3)
382 die("Invalid temporal layers: %d, Must be 1, 2, or 3. \n",
383 num_temporal_layers[i]);
384 }
385
386 /* Open file to write out each spatially downsampled input stream. */
387 for (i = 0; i < NUM_ENCODERS - 1; i++) {
388 // Highest resoln is encoder 0.
389 if (sprintf(filename, "ds%d.yuv", NUM_ENCODERS - i) < 0) {
390 return EXIT_FAILURE;
391 }
392 downsampled_input[i] = fopen(filename, "wb");
393 }
394
395 key_frame_insert = (int)strtol(argv[3 * NUM_ENCODERS + 5], NULL, 0);
396
397 show_psnr = (int)strtol(argv[3 * NUM_ENCODERS + 6], NULL, 0);
398
399 /* Populate default encoder configuration */
400 for (i = 0; i < NUM_ENCODERS; i++) {
401 res[i] = vpx_codec_enc_config_default(interface, &cfg[i], 0);
402 if (res[i]) {
403 printf("Failed to get config: %s\n", vpx_codec_err_to_string(res[i]));
404 return EXIT_FAILURE;
405 }
406 }
407
408 /*
409 * Update the default configuration according to needs of the application.
410 */
411 /* Highest-resolution encoder settings */
412 cfg[0].g_w = width;
413 cfg[0].g_h = height;
414 cfg[0].rc_dropframe_thresh = 0;
415 cfg[0].rc_end_usage = VPX_CBR;
416 cfg[0].rc_resize_allowed = 0;
417 cfg[0].rc_min_quantizer = 2;
418 cfg[0].rc_max_quantizer = 56;
419 cfg[0].rc_undershoot_pct = 100;
420 cfg[0].rc_overshoot_pct = 15;
421 cfg[0].rc_buf_initial_sz = 500;
422 cfg[0].rc_buf_optimal_sz = 600;
423 cfg[0].rc_buf_sz = 1000;
424 cfg[0].g_error_resilient = 1; /* Enable error resilient mode */
425 cfg[0].g_lag_in_frames = 0;
426
427 /* Disable automatic keyframe placement */
428 /* Note: These 3 settings are copied to all levels. But, except the lowest
429 * resolution level, all other levels are set to VPX_KF_DISABLED internally.
430 */
431 cfg[0].kf_mode = VPX_KF_AUTO;
432 cfg[0].kf_min_dist = 3000;
433 cfg[0].kf_max_dist = 3000;
434
435 cfg[0].rc_target_bitrate = target_bitrate[0]; /* Set target bitrate */
436 cfg[0].g_timebase.num = 1; /* Set fps */
437 cfg[0].g_timebase.den = framerate;
438
439 /* Other-resolution encoder settings */
440 for (i = 1; i < NUM_ENCODERS; i++) {
441 memcpy(&cfg[i], &cfg[0], sizeof(vpx_codec_enc_cfg_t));
442
443 cfg[i].rc_target_bitrate = target_bitrate[i];
444
445 /* Note: Width & height of other-resolution encoders are calculated
446 * from the highest-resolution encoder's size and the corresponding
447 * down_sampling_factor.
448 */
449 {
450 unsigned int iw = cfg[i - 1].g_w * dsf[i - 1].den + dsf[i - 1].num - 1;
451 unsigned int ih = cfg[i - 1].g_h * dsf[i - 1].den + dsf[i - 1].num - 1;
452 cfg[i].g_w = iw / dsf[i - 1].num;
453 cfg[i].g_h = ih / dsf[i - 1].num;
454 }
455
456 /* Make width & height to be multiplier of 2. */
457 // Should support odd size ???
458 if ((cfg[i].g_w) % 2) cfg[i].g_w++;
459 if ((cfg[i].g_h) % 2) cfg[i].g_h++;
460 }
461
462 // Set the number of threads per encode/spatial layer.
463 // (1, 1, 1) means no encoder threading.
464 cfg[0].g_threads = 1;
465 cfg[1].g_threads = 1;
466 cfg[2].g_threads = 1;
467
468 /* Allocate image for each encoder */
469 for (i = 0; i < NUM_ENCODERS; i++)
470 if (!vpx_img_alloc(&raw[i], VPX_IMG_FMT_I420, cfg[i].g_w, cfg[i].g_h, 32))
471 die("Failed to allocate image (%dx%d)", cfg[i].g_w, cfg[i].g_h);
472
473 if (raw[0].stride[VPX_PLANE_Y] == (int)raw[0].d_w)
474 read_frame_p = mulres_read_frame;
475 else
476 read_frame_p = mulres_read_frame_by_row;
477
478 for (i = 0; i < NUM_ENCODERS; i++)
479 if (outfile[i]) write_ivf_file_header(outfile[i], &cfg[i], 0);
480
481 /* Temporal layers settings */
482 for (i = 0; i < NUM_ENCODERS; i++) {
483 set_temporal_layer_pattern(num_temporal_layers[i], &cfg[i],
484 cfg[i].rc_target_bitrate,
485 &layer_flags[i * VPX_TS_MAX_PERIODICITY]);
486 }
487
488 /* Initialize multi-encoder */
489 if (vpx_codec_enc_init_multi(&codec[0], interface, &cfg[0], NUM_ENCODERS,
490 (show_psnr ? VPX_CODEC_USE_PSNR : 0), &dsf[0]))
491 die_codec(&codec[0], "Failed to initialize encoder");
492
493 /* The extra encoding configuration parameters can be set as follows. */
494 /* Set encoding speed */
495 for (i = 0; i < NUM_ENCODERS; i++) {
496 int speed = -6;
497 /* Lower speed for the lowest resolution. */
498 if (i == NUM_ENCODERS - 1) speed = -4;
499 if (vpx_codec_control(&codec[i], VP8E_SET_CPUUSED, speed))
500 die_codec(&codec[i], "Failed to set cpu_used");
501 }
502
503 /* Set static threshold = 1 for all encoders */
504 for (i = 0; i < NUM_ENCODERS; i++) {
505 if (vpx_codec_control(&codec[i], VP8E_SET_STATIC_THRESHOLD, 1))
506 die_codec(&codec[i], "Failed to set static threshold");
507 }
508
509 /* Set NOISE_SENSITIVITY to do TEMPORAL_DENOISING */
510 /* Enable denoising for the highest-resolution encoder. */
511 if (vpx_codec_control(&codec[0], VP8E_SET_NOISE_SENSITIVITY, 1))
512 die_codec(&codec[0], "Failed to set noise_sensitivity");
513 if (vpx_codec_control(&codec[1], VP8E_SET_NOISE_SENSITIVITY, 1))
514 die_codec(&codec[1], "Failed to set noise_sensitivity");
515 for (i = 2; i < NUM_ENCODERS; i++) {
516 if (vpx_codec_control(&codec[i], VP8E_SET_NOISE_SENSITIVITY, 0))
517 die_codec(&codec[i], "Failed to set noise_sensitivity");
518 }
519
520 /* Set the number of token partitions */
521 for (i = 0; i < NUM_ENCODERS; i++) {
522 if (vpx_codec_control(&codec[i], VP8E_SET_TOKEN_PARTITIONS, 1))
523 die_codec(&codec[i], "Failed to set static threshold");
524 }
525
526 /* Set the max intra target bitrate */
527 for (i = 0; i < NUM_ENCODERS; i++) {
528 unsigned int max_intra_size_pct =
529 (int)(((double)cfg[0].rc_buf_optimal_sz * 0.5) * framerate / 10);
530 if (vpx_codec_control(&codec[i], VP8E_SET_MAX_INTRA_BITRATE_PCT,
531 max_intra_size_pct))
532 die_codec(&codec[i], "Failed to set static threshold");
533 // printf("%d %d \n",i,max_intra_size_pct);
534 }
535
536 frame_avail = 1;
537 got_data = 0;
538
539 while (frame_avail || got_data) {
540 struct vpx_usec_timer timer;
541 vpx_codec_iter_t iter[NUM_ENCODERS] = { NULL };
542 const vpx_codec_cx_pkt_t *pkt[NUM_ENCODERS];
543
544 flags = 0;
545 frame_avail = read_frame_p(infile, &raw[0]);
546
547 if (frame_avail) {
548 for (i = 1; i < NUM_ENCODERS; i++) {
549 /*Scale the image down a number of times by downsampling factor*/
550 /* FilterMode 1 or 2 give better psnr than FilterMode 0. */
551 I420Scale(
552 raw[i - 1].planes[VPX_PLANE_Y], raw[i - 1].stride[VPX_PLANE_Y],
553 raw[i - 1].planes[VPX_PLANE_U], raw[i - 1].stride[VPX_PLANE_U],
554 raw[i - 1].planes[VPX_PLANE_V], raw[i - 1].stride[VPX_PLANE_V],
555 raw[i - 1].d_w, raw[i - 1].d_h, raw[i].planes[VPX_PLANE_Y],
556 raw[i].stride[VPX_PLANE_Y], raw[i].planes[VPX_PLANE_U],
557 raw[i].stride[VPX_PLANE_U], raw[i].planes[VPX_PLANE_V],
558 raw[i].stride[VPX_PLANE_V], raw[i].d_w, raw[i].d_h, 1);
559 /* Write out down-sampled input. */
560 length_frame = cfg[i].g_w * cfg[i].g_h * 3 / 2;
561 if (fwrite(raw[i].planes[0], 1, length_frame,
562 downsampled_input[NUM_ENCODERS - i - 1]) !=
563 (unsigned int)length_frame) {
564 return EXIT_FAILURE;
565 }
566 }
567 }
568
569 /* Set the flags (reference and update) for all the encoders.*/
570 for (i = 0; i < NUM_ENCODERS; i++) {
571 layer_id = cfg[i].ts_layer_id[frame_cnt % cfg[i].ts_periodicity];
572 flags = 0;
573 flag_periodicity = periodicity_to_num_layers[num_temporal_layers[i] - 1];
574 flags = layer_flags[i * VPX_TS_MAX_PERIODICITY +
575 frame_cnt % flag_periodicity];
576 // Key frame flag for first frame.
577 if (frame_cnt == 0) {
578 flags |= VPX_EFLAG_FORCE_KF;
579 }
580 if (frame_cnt > 0 && frame_cnt == key_frame_insert) {
581 flags = VPX_EFLAG_FORCE_KF;
582 }
583
584 vpx_codec_control(&codec[i], VP8E_SET_FRAME_FLAGS, flags);
585 vpx_codec_control(&codec[i], VP8E_SET_TEMPORAL_LAYER_ID, layer_id);
586 }
587
588 /* Encode each frame at multi-levels */
589 /* Note the flags must be set to 0 in the encode call if they are set
590 for each frame with the vpx_codec_control(), as done above. */
591 vpx_usec_timer_start(&timer);
592 if (vpx_codec_encode(&codec[0], frame_avail ? &raw[0] : NULL, frame_cnt, 1,
593 0, arg_deadline)) {
594 die_codec(&codec[0], "Failed to encode frame");
595 }
596 vpx_usec_timer_mark(&timer);
597 cx_time += vpx_usec_timer_elapsed(&timer);
598
599 for (i = NUM_ENCODERS - 1; i >= 0; i--) {
600 got_data = 0;
601 while ((pkt[i] = vpx_codec_get_cx_data(&codec[i], &iter[i]))) {
602 got_data = 1;
603 switch (pkt[i]->kind) {
604 case VPX_CODEC_CX_FRAME_PKT:
605 write_ivf_frame_header(outfile[i], pkt[i]);
606 (void)fwrite(pkt[i]->data.frame.buf, 1, pkt[i]->data.frame.sz,
607 outfile[i]);
608 break;
609 case VPX_CODEC_PSNR_PKT:
610 if (show_psnr) {
611 int j;
612
613 psnr_sse_total[i] += pkt[i]->data.psnr.sse[0];
614 psnr_samples_total[i] += pkt[i]->data.psnr.samples[0];
615 for (j = 0; j < 4; j++) {
616 psnr_totals[i][j] += pkt[i]->data.psnr.psnr[j];
617 }
618 psnr_count[i]++;
619 }
620
621 break;
622 default: break;
623 }
624 fflush(stdout);
625 }
626 }
627 frame_cnt++;
628 }
629 printf("\n");
630 printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
631 frame_cnt, 1000 * (float)cx_time / (double)(frame_cnt * 1000000),
632 1000000 * (double)frame_cnt / (double)cx_time);
633
634 fclose(infile);
635
636 printf("Processed %ld frames.\n", (long int)frame_cnt - 1);
637 for (i = 0; i < NUM_ENCODERS; i++) {
638 /* Calculate PSNR and print it out */
639 if ((show_psnr) && (psnr_count[i] > 0)) {
640 int j;
641 double ovpsnr =
642 sse_to_psnr(psnr_samples_total[i], 255.0, psnr_sse_total[i]);
643
644 fprintf(stderr, "\n ENC%d PSNR (Overall/Avg/Y/U/V)", i);
645
646 fprintf(stderr, " %.3lf", ovpsnr);
647 for (j = 0; j < 4; j++) {
648 fprintf(stderr, " %.3lf", psnr_totals[i][j] / psnr_count[i]);
649 }
650 }
651
652 if (vpx_codec_destroy(&codec[i]))
653 die_codec(&codec[i], "Failed to destroy codec");
654
655 vpx_img_free(&raw[i]);
656
657 if (!outfile[i]) continue;
658
659 /* Try to rewrite the file header with the actual frame count */
660 if (!fseek(outfile[i], 0, SEEK_SET))
661 write_ivf_file_header(outfile[i], &cfg[i], frame_cnt - 1);
662 fclose(outfile[i]);
663 }
664
665 return EXIT_SUCCESS;
666 }
667