2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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.
12 * This is an example demonstrating how to implement a multi-layer
13 * VP9 encoding scheme based on spatial scalability for video applications
14 * that benefit from a scalable bitstream.
23 #include "../tools_common.h"
24 #include "../video_writer.h"
26 #include "vpx/svc_context.h"
27 #include "vpx/vp8cx.h"
28 #include "vpx/vpx_encoder.h"
29 #include "../vpxstats.h"
31 static const arg_def_t skip_frames_arg =
32 ARG_DEF("s", "skip-frames", 1, "input frames to skip");
33 static const arg_def_t frames_arg =
34 ARG_DEF("f", "frames", 1, "number of frames to encode");
35 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
36 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
37 static const arg_def_t timebase_arg =
38 ARG_DEF("t", "timebase", 1, "timebase (num/den)");
39 static const arg_def_t bitrate_arg = ARG_DEF(
40 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
41 static const arg_def_t spatial_layers_arg =
42 ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
43 static const arg_def_t temporal_layers_arg =
44 ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
45 static const arg_def_t kf_dist_arg =
46 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
47 static const arg_def_t scale_factors_arg =
48 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
49 static const arg_def_t passes_arg =
50 ARG_DEF("p", "passes", 1, "Number of passes (1/2)");
51 static const arg_def_t pass_arg =
52 ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)");
53 static const arg_def_t fpf_name_arg =
54 ARG_DEF(NULL, "fpf", 1, "First pass statistics file name");
55 static const arg_def_t min_q_arg =
56 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
57 static const arg_def_t max_q_arg =
58 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
59 static const arg_def_t min_bitrate_arg =
60 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
61 static const arg_def_t max_bitrate_arg =
62 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
63 static const arg_def_t lag_in_frame_arg =
64 ARG_DEF(NULL, "lag-in-frames", 1, "Number of frame to input before "
65 "generating any outputs");
66 static const arg_def_t rc_end_usage_arg =
67 ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
69 #if CONFIG_VP9_HIGHBITDEPTH
70 static const struct arg_enum_list bitdepth_enum[] = {
77 static const arg_def_t bitdepth_arg =
78 ARG_DEF_ENUM("d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ",
80 #endif // CONFIG_VP9_HIGHBITDEPTH
83 static const arg_def_t *svc_args[] = {
84 &frames_arg, &width_arg, &height_arg,
85 &timebase_arg, &bitrate_arg, &skip_frames_arg, &spatial_layers_arg,
86 &kf_dist_arg, &scale_factors_arg, &passes_arg, &pass_arg,
87 &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg,
88 &max_bitrate_arg, &temporal_layers_arg, &lag_in_frame_arg,
89 #if CONFIG_VP9_HIGHBITDEPTH
92 &rc_end_usage_arg, NULL
95 static const uint32_t default_frames_to_skip = 0;
96 static const uint32_t default_frames_to_code = 60 * 60;
97 static const uint32_t default_width = 1920;
98 static const uint32_t default_height = 1080;
99 static const uint32_t default_timebase_num = 1;
100 static const uint32_t default_timebase_den = 60;
101 static const uint32_t default_bitrate = 1000;
102 static const uint32_t default_spatial_layers = 5;
103 static const uint32_t default_temporal_layers = 1;
104 static const uint32_t default_kf_dist = 100;
107 const char *input_filename;
108 const char *output_filename;
109 uint32_t frames_to_code;
110 uint32_t frames_to_skip;
111 struct VpxInputContext input_ctx;
117 static const char *exec_name;
119 void usage_exit(void) {
120 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
122 fprintf(stderr, "Options:\n");
123 arg_show_usage(stderr, svc_args);
127 static void parse_command_line(int argc, const char **argv_,
128 AppInput *app_input, SvcContext *svc_ctx,
129 vpx_codec_enc_cfg_t *enc_cfg) {
130 struct arg arg = {0};
137 const char *fpf_file_name = NULL;
138 unsigned int min_bitrate = 0;
139 unsigned int max_bitrate = 0;
140 char string_options[1024] = {0};
142 // initialize SvcContext with parameters that will be passed to vpx_svc_init
143 svc_ctx->log_level = SVC_LOG_DEBUG;
144 svc_ctx->spatial_layers = default_spatial_layers;
145 svc_ctx->temporal_layers = default_temporal_layers;
147 // start with default encoder configuration
148 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
150 die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
152 // update enc_cfg with app default values
153 enc_cfg->g_w = default_width;
154 enc_cfg->g_h = default_height;
155 enc_cfg->g_timebase.num = default_timebase_num;
156 enc_cfg->g_timebase.den = default_timebase_den;
157 enc_cfg->rc_target_bitrate = default_bitrate;
158 enc_cfg->kf_min_dist = default_kf_dist;
159 enc_cfg->kf_max_dist = default_kf_dist;
160 enc_cfg->rc_end_usage = VPX_CQ;
162 // initialize AppInput with default values
163 app_input->frames_to_code = default_frames_to_code;
164 app_input->frames_to_skip = default_frames_to_skip;
166 // process command line options
167 argv = argv_dup(argc - 1, argv_ + 1);
168 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
171 if (arg_match(&arg, &frames_arg, argi)) {
172 app_input->frames_to_code = arg_parse_uint(&arg);
173 } else if (arg_match(&arg, &width_arg, argi)) {
174 enc_cfg->g_w = arg_parse_uint(&arg);
175 } else if (arg_match(&arg, &height_arg, argi)) {
176 enc_cfg->g_h = arg_parse_uint(&arg);
177 } else if (arg_match(&arg, &timebase_arg, argi)) {
178 enc_cfg->g_timebase = arg_parse_rational(&arg);
179 } else if (arg_match(&arg, &bitrate_arg, argi)) {
180 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
181 } else if (arg_match(&arg, &skip_frames_arg, argi)) {
182 app_input->frames_to_skip = arg_parse_uint(&arg);
183 } else if (arg_match(&arg, &spatial_layers_arg, argi)) {
184 svc_ctx->spatial_layers = arg_parse_uint(&arg);
185 } else if (arg_match(&arg, &temporal_layers_arg, argi)) {
186 svc_ctx->temporal_layers = arg_parse_uint(&arg);
187 } else if (arg_match(&arg, &kf_dist_arg, argi)) {
188 enc_cfg->kf_min_dist = arg_parse_uint(&arg);
189 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
190 } else if (arg_match(&arg, &scale_factors_arg, argi)) {
191 snprintf(string_options, sizeof(string_options), "%s scale-factors=%s",
192 string_options, arg.val);
193 } else if (arg_match(&arg, &passes_arg, argi)) {
194 passes = arg_parse_uint(&arg);
195 if (passes < 1 || passes > 2) {
196 die("Error: Invalid number of passes (%d)\n", passes);
198 } else if (arg_match(&arg, &pass_arg, argi)) {
199 pass = arg_parse_uint(&arg);
200 if (pass < 1 || pass > 2) {
201 die("Error: Invalid pass selected (%d)\n", pass);
203 } else if (arg_match(&arg, &fpf_name_arg, argi)) {
204 fpf_file_name = arg.val;
205 } else if (arg_match(&arg, &min_q_arg, argi)) {
206 snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s",
207 string_options, arg.val);
208 } else if (arg_match(&arg, &max_q_arg, argi)) {
209 snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s",
210 string_options, arg.val);
211 } else if (arg_match(&arg, &min_bitrate_arg, argi)) {
212 min_bitrate = arg_parse_uint(&arg);
213 } else if (arg_match(&arg, &max_bitrate_arg, argi)) {
214 max_bitrate = arg_parse_uint(&arg);
215 } else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
216 enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
217 } else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
218 enc_cfg->rc_end_usage = arg_parse_uint(&arg);
219 #if CONFIG_VP9_HIGHBITDEPTH
220 } else if (arg_match(&arg, &bitdepth_arg, argi)) {
221 enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
222 switch (enc_cfg->g_bit_depth) {
224 enc_cfg->g_input_bit_depth = 8;
225 enc_cfg->g_profile = 0;
228 enc_cfg->g_input_bit_depth = 10;
229 enc_cfg->g_profile = 2;
232 enc_cfg->g_input_bit_depth = 12;
233 enc_cfg->g_profile = 2;
236 die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
239 #endif // CONFIG_VP9_HIGHBITDEPTH
245 // There will be a space in front of the string options
246 if (strlen(string_options) > 0)
247 vpx_svc_set_options(svc_ctx, string_options + 1);
249 if (passes == 0 || passes == 1) {
251 fprintf(stderr, "pass is ignored since there's only one pass\n");
253 enc_cfg->g_pass = VPX_RC_ONE_PASS;
256 die("pass must be specified when passes is 2\n");
259 if (fpf_file_name == NULL) {
260 die("fpf must be specified when passes is 2\n");
264 enc_cfg->g_pass = VPX_RC_FIRST_PASS;
265 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) {
266 fatal("Failed to open statistics store");
269 enc_cfg->g_pass = VPX_RC_LAST_PASS;
270 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) {
271 fatal("Failed to open statistics store");
273 enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats);
275 app_input->passes = passes;
276 app_input->pass = pass;
279 if (enc_cfg->rc_target_bitrate > 0) {
280 if (min_bitrate > 0) {
281 enc_cfg->rc_2pass_vbr_minsection_pct =
282 min_bitrate * 100 / enc_cfg->rc_target_bitrate;
284 if (max_bitrate > 0) {
285 enc_cfg->rc_2pass_vbr_maxsection_pct =
286 max_bitrate * 100 / enc_cfg->rc_target_bitrate;
290 // Check for unrecognized options
291 for (argi = argv; *argi; ++argi)
292 if (argi[0][0] == '-' && strlen(argi[0]) > 1)
293 die("Error: Unrecognized option %s\n", *argi);
295 if (argv[0] == NULL || argv[1] == 0) {
298 app_input->input_filename = argv[0];
299 app_input->output_filename = argv[1];
302 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
304 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
307 "Codec %s\nframes: %d, skip: %d\n"
309 "width %d, height: %d,\n"
310 "num: %d, den: %d, bitrate: %d,\n"
312 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
313 app_input->frames_to_skip,
314 svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h,
315 enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
316 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
319 int main(int argc, const char **argv) {
320 AppInput app_input = {0};
321 VpxVideoWriter *writer = NULL;
322 VpxVideoInfo info = {0};
323 vpx_codec_ctx_t codec;
324 vpx_codec_enc_cfg_t enc_cfg;
327 uint32_t frame_cnt = 0;
330 int pts = 0; /* PTS starts at 0 */
331 int frame_duration = 1; /* 1 timebase tick per frame */
333 int end_of_stream = 0;
334 int frames_received = 0;
336 memset(&svc_ctx, 0, sizeof(svc_ctx));
337 svc_ctx.log_print = 1;
339 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
341 // Allocate image buffer
342 #if CONFIG_VP9_HIGHBITDEPTH
343 if (!vpx_img_alloc(&raw, enc_cfg.g_input_bit_depth == 8 ?
344 VPX_IMG_FMT_I420 : VPX_IMG_FMT_I42016,
345 enc_cfg.g_w, enc_cfg.g_h, 32)) {
346 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
349 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
350 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
352 #endif // CONFIG_VP9_HIGHBITDEPTH
354 if (!(infile = fopen(app_input.input_filename, "rb")))
355 die("Failed to open %s for reading\n", app_input.input_filename);
358 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
360 die("Failed to initialize encoder\n");
362 info.codec_fourcc = VP9_FOURCC;
363 info.time_base.numerator = enc_cfg.g_timebase.num;
364 info.time_base.denominator = enc_cfg.g_timebase.den;
366 if (!(app_input.passes == 2 && app_input.pass == 1)) {
367 // We don't save the bitstream for the 1st pass on two pass rate control
368 writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF,
371 die("Failed to open %s for writing\n", app_input.output_filename);
374 // skip initial frames
375 for (i = 0; i < app_input.frames_to_skip; ++i)
376 vpx_img_read(&raw, infile);
379 while (!end_of_stream) {
380 vpx_codec_iter_t iter = NULL;
381 const vpx_codec_cx_pkt_t *cx_pkt;
382 if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) {
383 // We need one extra vpx_svc_encode call at end of stream to flush
384 // encoder and get remaining data
388 res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw),
389 pts, frame_duration, VPX_DL_GOOD_QUALITY);
390 printf("%s", vpx_svc_get_message(&svc_ctx));
391 if (res != VPX_CODEC_OK) {
392 die_codec(&codec, "Failed to encode frame");
395 while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) {
396 switch (cx_pkt->kind) {
397 case VPX_CODEC_CX_FRAME_PKT: {
398 if (cx_pkt->data.frame.sz > 0)
399 vpx_video_writer_write_frame(writer,
400 cx_pkt->data.frame.buf,
401 cx_pkt->data.frame.sz,
402 cx_pkt->data.frame.pts);
404 printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
405 !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
406 (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
410 case VPX_CODEC_STATS_PKT: {
411 stats_write(&app_input.rc_stats,
412 cx_pkt->data.twopass_stats.buf,
413 cx_pkt->data.twopass_stats.sz);
422 if (!end_of_stream) {
424 pts += frame_duration;
428 printf("Processed %d frames\n", frame_cnt);
431 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
433 if (app_input.passes == 2)
434 stats_close(&app_input.rc_stats, 1);
437 vpx_video_writer_close(writer);
442 // display average size, psnr
443 printf("%s", vpx_svc_dump_statistics(&svc_ctx));
445 vpx_svc_release(&svc_ctx);