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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 * 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. | |
15 */ | |
16 | |
17 #include <stdarg.h> | |
18 #include <stdlib.h> | |
19 #include <string.h> | |
20 #include <time.h> | |
21 | |
22 #include "./args.h" | |
23 #include "./tools_common.h" | |
24 #include "./video_writer.h" | |
25 | |
26 #include "vpx/svc_context.h" | |
27 #include "vpx/vp8cx.h" | |
28 #include "vpx/vpx_encoder.h" | |
29 #include "./vpxstats.h" | |
30 | |
31 static const struct arg_enum_list encoding_mode_enum[] = { | |
32 {"i", INTER_LAYER_PREDICTION_I}, | |
33 {"alt-ip", ALT_INTER_LAYER_PREDICTION_IP}, | |
34 {"ip", INTER_LAYER_PREDICTION_IP}, | |
35 {"gf", USE_GOLDEN_FRAME}, | |
36 {NULL, 0} | |
37 }; | |
38 | |
39 static const arg_def_t encoding_mode_arg = ARG_DEF_ENUM( | |
40 "m", "encoding-mode", 1, "Encoding mode algorithm", encoding_mode_enum); | |
41 static const arg_def_t skip_frames_arg = | |
42 ARG_DEF("s", "skip-frames", 1, "input frames to skip"); | |
43 static const arg_def_t frames_arg = | |
44 ARG_DEF("f", "frames", 1, "number of frames to encode"); | |
45 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width"); | |
46 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height"); | |
47 static const arg_def_t timebase_arg = | |
48 ARG_DEF("t", "timebase", 1, "timebase (num/den)"); | |
49 static const arg_def_t bitrate_arg = ARG_DEF( | |
50 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second"); | |
51 static const arg_def_t layers_arg = | |
52 ARG_DEF("l", "layers", 1, "number of SVC layers"); | |
53 static const arg_def_t kf_dist_arg = | |
54 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes"); | |
55 static const arg_def_t scale_factors_arg = | |
56 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)"); | |
57 static const arg_def_t quantizers_arg = | |
58 ARG_DEF("q", "quantizers", 1, "quantizers for non key frames, also will " | |
59 "be applied to key frames if -qn is not specified (lowest to " | |
60 "highest layer)"); | |
61 static const arg_def_t quantizers_keyframe_arg = | |
62 ARG_DEF("qn", "quantizers-keyframe", 1, "quantizers for key frames (lowest " | |
63 "to highest layer)"); | |
64 static const arg_def_t passes_arg = | |
65 ARG_DEF("p", "passes", 1, "Number of passes (1/2)"); | |
66 static const arg_def_t pass_arg = | |
67 ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)"); | |
68 static const arg_def_t fpf_name_arg = | |
69 ARG_DEF(NULL, "fpf", 1, "First pass statistics file name"); | |
70 static const arg_def_t min_q_arg = | |
71 ARG_DEF(NULL, "min-q", 1, "Minimum quantizer"); | |
72 static const arg_def_t max_q_arg = | |
73 ARG_DEF(NULL, "max-q", 1, "Maximum quantizer"); | |
74 static const arg_def_t min_bitrate_arg = | |
75 ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate"); | |
76 static const arg_def_t max_bitrate_arg = | |
77 ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate"); | |
78 | |
79 static const arg_def_t *svc_args[] = { | |
80 &encoding_mode_arg, &frames_arg, &width_arg, &height_arg, | |
81 &timebase_arg, &bitrate_arg, &skip_frames_arg, &layers_arg, | |
82 &kf_dist_arg, &scale_factors_arg, &quantizers_arg, | |
83 &quantizers_keyframe_arg, &passes_arg, &pass_arg, | |
84 &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg, | |
85 &max_bitrate_arg, NULL | |
86 }; | |
87 | |
88 static const SVC_ENCODING_MODE default_encoding_mode = | |
89 INTER_LAYER_PREDICTION_IP; | |
90 static const uint32_t default_frames_to_skip = 0; | |
91 static const uint32_t default_frames_to_code = 60 * 60; | |
92 static const uint32_t default_width = 1920; | |
93 static const uint32_t default_height = 1080; | |
94 static const uint32_t default_timebase_num = 1; | |
95 static const uint32_t default_timebase_den = 60; | |
96 static const uint32_t default_bitrate = 1000; | |
97 static const uint32_t default_spatial_layers = 5; | |
98 static const uint32_t default_kf_dist = 100; | |
99 | |
100 typedef struct { | |
101 const char *input_filename; | |
102 const char *output_filename; | |
103 uint32_t frames_to_code; | |
104 uint32_t frames_to_skip; | |
105 struct VpxInputContext input_ctx; | |
106 stats_io_t rc_stats; | |
107 int passes; | |
108 int pass; | |
109 } AppInput; | |
110 | |
111 static const char *exec_name; | |
112 | |
113 void usage_exit() { | |
114 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n", | |
115 exec_name); | |
116 fprintf(stderr, "Options:\n"); | |
117 arg_show_usage(stderr, svc_args); | |
118 exit(EXIT_FAILURE); | |
119 } | |
120 | |
121 static void parse_command_line(int argc, const char **argv_, | |
122 AppInput *app_input, SvcContext *svc_ctx, | |
123 vpx_codec_enc_cfg_t *enc_cfg) { | |
124 struct arg arg = {0}; | |
125 char **argv = NULL; | |
126 char **argi = NULL; | |
127 char **argj = NULL; | |
128 vpx_codec_err_t res; | |
129 int passes = 0; | |
130 int pass = 0; | |
131 const char *fpf_file_name = NULL; | |
132 unsigned int min_bitrate = 0; | |
133 unsigned int max_bitrate = 0; | |
134 | |
135 // initialize SvcContext with parameters that will be passed to vpx_svc_init | |
136 svc_ctx->log_level = SVC_LOG_DEBUG; | |
137 svc_ctx->spatial_layers = default_spatial_layers; | |
138 svc_ctx->encoding_mode = default_encoding_mode; | |
139 | |
140 // start with default encoder configuration | |
141 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0); | |
142 if (res) { | |
143 die("Failed to get config: %s\n", vpx_codec_err_to_string(res)); | |
144 } | |
145 // update enc_cfg with app default values | |
146 enc_cfg->g_w = default_width; | |
147 enc_cfg->g_h = default_height; | |
148 enc_cfg->g_timebase.num = default_timebase_num; | |
149 enc_cfg->g_timebase.den = default_timebase_den; | |
150 enc_cfg->rc_target_bitrate = default_bitrate; | |
151 enc_cfg->kf_min_dist = default_kf_dist; | |
152 enc_cfg->kf_max_dist = default_kf_dist; | |
153 | |
154 // initialize AppInput with default values | |
155 app_input->frames_to_code = default_frames_to_code; | |
156 app_input->frames_to_skip = default_frames_to_skip; | |
157 | |
158 // process command line options | |
159 argv = argv_dup(argc - 1, argv_ + 1); | |
160 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) { | |
161 arg.argv_step = 1; | |
162 | |
163 if (arg_match(&arg, &encoding_mode_arg, argi)) { | |
164 svc_ctx->encoding_mode = arg_parse_enum_or_int(&arg); | |
165 } else if (arg_match(&arg, &frames_arg, argi)) { | |
166 app_input->frames_to_code = arg_parse_uint(&arg); | |
167 } else if (arg_match(&arg, &width_arg, argi)) { | |
168 enc_cfg->g_w = arg_parse_uint(&arg); | |
169 } else if (arg_match(&arg, &height_arg, argi)) { | |
170 enc_cfg->g_h = arg_parse_uint(&arg); | |
171 } else if (arg_match(&arg, &timebase_arg, argi)) { | |
172 enc_cfg->g_timebase = arg_parse_rational(&arg); | |
173 } else if (arg_match(&arg, &bitrate_arg, argi)) { | |
174 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg); | |
175 } else if (arg_match(&arg, &skip_frames_arg, argi)) { | |
176 app_input->frames_to_skip = arg_parse_uint(&arg); | |
177 } else if (arg_match(&arg, &layers_arg, argi)) { | |
178 svc_ctx->spatial_layers = arg_parse_uint(&arg); | |
179 } else if (arg_match(&arg, &kf_dist_arg, argi)) { | |
180 enc_cfg->kf_min_dist = arg_parse_uint(&arg); | |
181 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist; | |
182 } else if (arg_match(&arg, &scale_factors_arg, argi)) { | |
183 vpx_svc_set_scale_factors(svc_ctx, arg.val); | |
184 } else if (arg_match(&arg, &quantizers_arg, argi)) { | |
185 vpx_svc_set_quantizers(svc_ctx, arg.val, 0); | |
186 } else if (arg_match(&arg, &quantizers_keyframe_arg, argi)) { | |
187 vpx_svc_set_quantizers(svc_ctx, arg.val, 1); | |
188 } else if (arg_match(&arg, &passes_arg, argi)) { | |
189 passes = arg_parse_uint(&arg); | |
190 if (passes < 1 || passes > 2) { | |
191 die("Error: Invalid number of passes (%d)\n", passes); | |
192 } | |
193 } else if (arg_match(&arg, &pass_arg, argi)) { | |
194 pass = arg_parse_uint(&arg); | |
195 if (pass < 1 || pass > 2) { | |
196 die("Error: Invalid pass selected (%d)\n", pass); | |
197 } | |
198 } else if (arg_match(&arg, &fpf_name_arg, argi)) { | |
199 fpf_file_name = arg.val; | |
200 } else if (arg_match(&arg, &min_q_arg, argi)) { | |
201 enc_cfg->rc_min_quantizer = arg_parse_uint(&arg); | |
202 } else if (arg_match(&arg, &max_q_arg, argi)) { | |
203 enc_cfg->rc_max_quantizer = arg_parse_uint(&arg); | |
204 } else if (arg_match(&arg, &min_bitrate_arg, argi)) { | |
205 min_bitrate = arg_parse_uint(&arg); | |
206 } else if (arg_match(&arg, &max_bitrate_arg, argi)) { | |
207 max_bitrate = arg_parse_uint(&arg); | |
208 } else { | |
209 ++argj; | |
210 } | |
211 } | |
212 | |
213 if (passes == 0 || passes == 1) { | |
214 if (pass) { | |
215 fprintf(stderr, "pass is ignored since there's only one pass\n"); | |
216 } | |
217 enc_cfg->g_pass = VPX_RC_ONE_PASS; | |
218 } else { | |
219 if (pass == 0) { | |
220 die("pass must be specified when passes is 2\n"); | |
221 } | |
222 | |
223 if (fpf_file_name == NULL) { | |
224 die("fpf must be specified when passes is 2\n"); | |
225 } | |
226 | |
227 if (pass == 1) { | |
228 enc_cfg->g_pass = VPX_RC_FIRST_PASS; | |
229 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) { | |
230 fatal("Failed to open statistics store"); | |
231 } | |
232 } else { | |
233 enc_cfg->g_pass = VPX_RC_LAST_PASS; | |
234 if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) { | |
235 fatal("Failed to open statistics store"); | |
236 } | |
237 enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats); | |
238 } | |
239 app_input->passes = passes; | |
240 app_input->pass = pass; | |
241 } | |
242 | |
243 if (enc_cfg->rc_target_bitrate > 0) { | |
244 if (min_bitrate > 0) { | |
245 enc_cfg->rc_2pass_vbr_minsection_pct = | |
246 min_bitrate * 100 / enc_cfg->rc_target_bitrate; | |
247 } | |
248 if (max_bitrate > 0) { | |
249 enc_cfg->rc_2pass_vbr_maxsection_pct = | |
250 max_bitrate * 100 / enc_cfg->rc_target_bitrate; | |
251 } | |
252 } | |
253 | |
254 // Check for unrecognized options | |
255 for (argi = argv; *argi; ++argi) | |
256 if (argi[0][0] == '-' && strlen(argi[0]) > 1) | |
257 die("Error: Unrecognized option %s\n", *argi); | |
258 | |
259 if (argv[0] == NULL || argv[1] == 0) { | |
260 usage_exit(); | |
261 } | |
262 app_input->input_filename = argv[0]; | |
263 app_input->output_filename = argv[1]; | |
264 free(argv); | |
265 | |
266 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 || | |
267 enc_cfg->g_h % 2) | |
268 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h); | |
269 | |
270 printf( | |
271 "Codec %s\nframes: %d, skip: %d\n" | |
272 "mode: %d, layers: %d\n" | |
273 "width %d, height: %d,\n" | |
274 "num: %d, den: %d, bitrate: %d,\n" | |
275 "gop size: %d\n", | |
276 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code, | |
277 app_input->frames_to_skip, svc_ctx->encoding_mode, | |
278 svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h, | |
279 enc_cfg->g_timebase.num, enc_cfg->g_timebase.den, | |
280 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist); | |
281 } | |
282 | |
283 int main(int argc, const char **argv) { | |
284 AppInput app_input = {0}; | |
285 VpxVideoWriter *writer = NULL; | |
286 VpxVideoInfo info = {0}; | |
287 vpx_codec_ctx_t codec; | |
288 vpx_codec_enc_cfg_t enc_cfg; | |
289 SvcContext svc_ctx; | |
290 uint32_t i; | |
291 uint32_t frame_cnt = 0; | |
292 vpx_image_t raw; | |
293 vpx_codec_err_t res; | |
294 int pts = 0; /* PTS starts at 0 */ | |
295 int frame_duration = 1; /* 1 timebase tick per frame */ | |
296 FILE *infile = NULL; | |
297 int end_of_stream = 0; | |
298 | |
299 memset(&svc_ctx, 0, sizeof(svc_ctx)); | |
300 svc_ctx.log_print = 1; | |
301 exec_name = argv[0]; | |
302 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg); | |
303 | |
304 // Allocate image buffer | |
305 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) | |
306 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); | |
307 | |
308 if (!(infile = fopen(app_input.input_filename, "rb"))) | |
309 die("Failed to open %s for reading\n", app_input.input_filename); | |
310 | |
311 // Initialize codec | |
312 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) != | |
313 VPX_CODEC_OK) | |
314 die("Failed to initialize encoder\n"); | |
315 | |
316 info.codec_fourcc = VP9_FOURCC; | |
317 info.time_base.numerator = enc_cfg.g_timebase.num; | |
318 info.time_base.denominator = enc_cfg.g_timebase.den; | |
319 if (vpx_svc_get_layer_resolution(&svc_ctx, svc_ctx.spatial_layers - 1, | |
320 (unsigned int *)&info.frame_width, | |
321 (unsigned int *)&info.frame_height) != | |
322 VPX_CODEC_OK) { | |
323 die("Failed to get output resolution"); | |
324 } | |
325 | |
326 if (!(app_input.passes == 2 && app_input.pass == 1)) { | |
327 // We don't save the bitstream for the 1st pass on two pass rate control | |
328 writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF, | |
329 &info); | |
330 if (!writer) | |
331 die("Failed to open %s for writing\n", app_input.output_filename); | |
332 } | |
333 | |
334 // skip initial frames | |
335 for (i = 0; i < app_input.frames_to_skip; ++i) | |
336 vpx_img_read(&raw, infile); | |
337 | |
338 // Encode frames | |
339 while (!end_of_stream) { | |
340 if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) { | |
341 // We need one extra vpx_svc_encode call at end of stream to flush | |
342 // encoder and get remaining data | |
343 end_of_stream = 1; | |
344 } | |
345 | |
346 res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw), | |
347 pts, frame_duration, VPX_DL_GOOD_QUALITY); | |
348 printf("%s", vpx_svc_get_message(&svc_ctx)); | |
349 if (res != VPX_CODEC_OK) { | |
350 die_codec(&codec, "Failed to encode frame"); | |
351 } | |
352 if (!(app_input.passes == 2 && app_input.pass == 1)) { | |
353 if (vpx_svc_get_frame_size(&svc_ctx) > 0) { | |
354 vpx_video_writer_write_frame(writer, | |
355 vpx_svc_get_buffer(&svc_ctx), | |
356 vpx_svc_get_frame_size(&svc_ctx), | |
357 pts); | |
358 } | |
359 } | |
360 if (vpx_svc_get_rc_stats_buffer_size(&svc_ctx) > 0) { | |
361 stats_write(&app_input.rc_stats, | |
362 vpx_svc_get_rc_stats_buffer(&svc_ctx), | |
363 vpx_svc_get_rc_stats_buffer_size(&svc_ctx)); | |
364 } | |
365 if (!end_of_stream) { | |
366 ++frame_cnt; | |
367 pts += frame_duration; | |
368 } | |
369 } | |
370 | |
371 printf("Processed %d frames\n", frame_cnt); | |
372 | |
373 fclose(infile); | |
374 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); | |
375 | |
376 if (app_input.passes == 2) | |
377 stats_close(&app_input.rc_stats, 1); | |
378 | |
379 if (writer) { | |
380 vpx_video_writer_close(writer); | |
381 } | |
382 | |
383 vpx_img_free(&raw); | |
384 | |
385 // display average size, psnr | |
386 printf("%s", vpx_svc_dump_statistics(&svc_ctx)); | |
387 | |
388 vpx_svc_release(&svc_ctx); | |
389 | |
390 return EXIT_SUCCESS; | |
391 } | |
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