| OLD | NEW |
|---|
| (Empty) |
| 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 | |
| 30 static const struct arg_enum_list encoding_mode_enum[] = { | |
| 31 {"i", INTER_LAYER_PREDICTION_I}, | |
| 32 {"alt-ip", ALT_INTER_LAYER_PREDICTION_IP}, | |
| 33 {"ip", INTER_LAYER_PREDICTION_IP}, | |
| 34 {"gf", USE_GOLDEN_FRAME}, | |
| 35 {NULL, 0} | |
| 36 }; | |
| 37 | |
| 38 static const arg_def_t encoding_mode_arg = ARG_DEF_ENUM( | |
| 39 "m", "encoding-mode", 1, "Encoding mode algorithm", encoding_mode_enum); | |
| 40 static const arg_def_t skip_frames_arg = | |
| 41 ARG_DEF("s", "skip-frames", 1, "input frames to skip"); | |
| 42 static const arg_def_t frames_arg = | |
| 43 ARG_DEF("f", "frames", 1, "number of frames to encode"); | |
| 44 static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width"); | |
| 45 static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height"); | |
| 46 static const arg_def_t timebase_arg = | |
| 47 ARG_DEF("t", "timebase", 1, "timebase (num/den)"); | |
| 48 static const arg_def_t bitrate_arg = ARG_DEF( | |
| 49 "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second"); | |
| 50 static const arg_def_t layers_arg = | |
| 51 ARG_DEF("l", "layers", 1, "number of SVC layers"); | |
| 52 static const arg_def_t kf_dist_arg = | |
| 53 ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes"); | |
| 54 static const arg_def_t scale_factors_arg = | |
| 55 ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)"); | |
| 56 static const arg_def_t quantizers_arg = | |
| 57 ARG_DEF("q", "quantizers", 1, "quantizers (lowest to highest layer)"); | |
| 58 | |
| 59 static const arg_def_t *svc_args[] = { | |
| 60 &encoding_mode_arg, &frames_arg, &width_arg, &height_arg, | |
| 61 &timebase_arg, &bitrate_arg, &skip_frames_arg, &layers_arg, | |
| 62 &kf_dist_arg, &scale_factors_arg, &quantizers_arg, NULL | |
| 63 }; | |
| 64 | |
| 65 static const SVC_ENCODING_MODE default_encoding_mode = | |
| 66 INTER_LAYER_PREDICTION_IP; | |
| 67 static const uint32_t default_frames_to_skip = 0; | |
| 68 static const uint32_t default_frames_to_code = 60 * 60; | |
| 69 static const uint32_t default_width = 1920; | |
| 70 static const uint32_t default_height = 1080; | |
| 71 static const uint32_t default_timebase_num = 1; | |
| 72 static const uint32_t default_timebase_den = 60; | |
| 73 static const uint32_t default_bitrate = 1000; | |
| 74 static const uint32_t default_spatial_layers = 5; | |
| 75 static const uint32_t default_kf_dist = 100; | |
| 76 | |
| 77 typedef struct { | |
| 78 const char *input_filename; | |
| 79 const char *output_filename; | |
| 80 uint32_t frames_to_code; | |
| 81 uint32_t frames_to_skip; | |
| 82 } AppInput; | |
| 83 | |
| 84 static const char *exec_name; | |
| 85 | |
| 86 void usage_exit() { | |
| 87 fprintf(stderr, "Usage: %s <options> input_filename output_filename\n", | |
| 88 exec_name); | |
| 89 fprintf(stderr, "Options:\n"); | |
| 90 arg_show_usage(stderr, svc_args); | |
| 91 exit(EXIT_FAILURE); | |
| 92 } | |
| 93 | |
| 94 static void parse_command_line(int argc, const char **argv_, | |
| 95 AppInput *app_input, SvcContext *svc_ctx, | |
| 96 vpx_codec_enc_cfg_t *enc_cfg) { | |
| 97 struct arg arg = {0}; | |
| 98 char **argv = NULL; | |
| 99 char **argi = NULL; | |
| 100 char **argj = NULL; | |
| 101 vpx_codec_err_t res; | |
| 102 | |
| 103 // initialize SvcContext with parameters that will be passed to vpx_svc_init | |
| 104 svc_ctx->log_level = SVC_LOG_DEBUG; | |
| 105 svc_ctx->spatial_layers = default_spatial_layers; | |
| 106 svc_ctx->encoding_mode = default_encoding_mode; | |
| 107 | |
| 108 // start with default encoder configuration | |
| 109 res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0); | |
| 110 if (res) { | |
| 111 die("Failed to get config: %s\n", vpx_codec_err_to_string(res)); | |
| 112 } | |
| 113 // update enc_cfg with app default values | |
| 114 enc_cfg->g_w = default_width; | |
| 115 enc_cfg->g_h = default_height; | |
| 116 enc_cfg->g_timebase.num = default_timebase_num; | |
| 117 enc_cfg->g_timebase.den = default_timebase_den; | |
| 118 enc_cfg->rc_target_bitrate = default_bitrate; | |
| 119 enc_cfg->kf_min_dist = default_kf_dist; | |
| 120 enc_cfg->kf_max_dist = default_kf_dist; | |
| 121 | |
| 122 // initialize AppInput with default values | |
| 123 app_input->frames_to_code = default_frames_to_code; | |
| 124 app_input->frames_to_skip = default_frames_to_skip; | |
| 125 | |
| 126 // process command line options | |
| 127 argv = argv_dup(argc - 1, argv_ + 1); | |
| 128 for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) { | |
| 129 arg.argv_step = 1; | |
| 130 | |
| 131 if (arg_match(&arg, &encoding_mode_arg, argi)) { | |
| 132 svc_ctx->encoding_mode = arg_parse_enum_or_int(&arg); | |
| 133 } else if (arg_match(&arg, &frames_arg, argi)) { | |
| 134 app_input->frames_to_code = arg_parse_uint(&arg); | |
| 135 } else if (arg_match(&arg, &width_arg, argi)) { | |
| 136 enc_cfg->g_w = arg_parse_uint(&arg); | |
| 137 } else if (arg_match(&arg, &height_arg, argi)) { | |
| 138 enc_cfg->g_h = arg_parse_uint(&arg); | |
| 139 } else if (arg_match(&arg, &timebase_arg, argi)) { | |
| 140 enc_cfg->g_timebase = arg_parse_rational(&arg); | |
| 141 } else if (arg_match(&arg, &bitrate_arg, argi)) { | |
| 142 enc_cfg->rc_target_bitrate = arg_parse_uint(&arg); | |
| 143 } else if (arg_match(&arg, &skip_frames_arg, argi)) { | |
| 144 app_input->frames_to_skip = arg_parse_uint(&arg); | |
| 145 } else if (arg_match(&arg, &layers_arg, argi)) { | |
| 146 svc_ctx->spatial_layers = arg_parse_uint(&arg); | |
| 147 } else if (arg_match(&arg, &kf_dist_arg, argi)) { | |
| 148 enc_cfg->kf_min_dist = arg_parse_uint(&arg); | |
| 149 enc_cfg->kf_max_dist = enc_cfg->kf_min_dist; | |
| 150 } else if (arg_match(&arg, &scale_factors_arg, argi)) { | |
| 151 vpx_svc_set_scale_factors(svc_ctx, arg.val); | |
| 152 } else if (arg_match(&arg, &quantizers_arg, argi)) { | |
| 153 vpx_svc_set_quantizers(svc_ctx, arg.val); | |
| 154 } else { | |
| 155 ++argj; | |
| 156 } | |
| 157 } | |
| 158 | |
| 159 // Check for unrecognized options | |
| 160 for (argi = argv; *argi; ++argi) | |
| 161 if (argi[0][0] == '-' && strlen(argi[0]) > 1) | |
| 162 die("Error: Unrecognized option %s\n", *argi); | |
| 163 | |
| 164 if (argv[0] == NULL || argv[1] == 0) { | |
| 165 usage_exit(); | |
| 166 } | |
| 167 app_input->input_filename = argv[0]; | |
| 168 app_input->output_filename = argv[1]; | |
| 169 free(argv); | |
| 170 | |
| 171 if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 || | |
| 172 enc_cfg->g_h % 2) | |
| 173 die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h); | |
| 174 | |
| 175 printf( | |
| 176 "Codec %s\nframes: %d, skip: %d\n" | |
| 177 "mode: %d, layers: %d\n" | |
| 178 "width %d, height: %d,\n" | |
| 179 "num: %d, den: %d, bitrate: %d,\n" | |
| 180 "gop size: %d\n", | |
| 181 vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code, | |
| 182 app_input->frames_to_skip, svc_ctx->encoding_mode, | |
| 183 svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h, | |
| 184 enc_cfg->g_timebase.num, enc_cfg->g_timebase.den, | |
| 185 enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist); | |
| 186 } | |
| 187 | |
| 188 int main(int argc, const char **argv) { | |
| 189 AppInput app_input = {0}; | |
| 190 VpxVideoWriter *writer = NULL; | |
| 191 VpxVideoInfo info = {0}; | |
| 192 vpx_codec_ctx_t codec; | |
| 193 vpx_codec_enc_cfg_t enc_cfg; | |
| 194 SvcContext svc_ctx; | |
| 195 uint32_t i; | |
| 196 uint32_t frame_cnt = 0; | |
| 197 vpx_image_t raw; | |
| 198 vpx_codec_err_t res; | |
| 199 int pts = 0; /* PTS starts at 0 */ | |
| 200 int frame_duration = 1; /* 1 timebase tick per frame */ | |
| 201 FILE *infile = NULL; | |
| 202 | |
| 203 memset(&svc_ctx, 0, sizeof(svc_ctx)); | |
| 204 svc_ctx.log_print = 1; | |
| 205 exec_name = argv[0]; | |
| 206 parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg); | |
| 207 | |
| 208 // Allocate image buffer | |
| 209 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) | |
| 210 die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); | |
| 211 | |
| 212 if (!(infile = fopen(app_input.input_filename, "rb"))) | |
| 213 die("Failed to open %s for reading\n", app_input.input_filename); | |
| 214 | |
| 215 // Initialize codec | |
| 216 if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) != | |
| 217 VPX_CODEC_OK) | |
| 218 die("Failed to initialize encoder\n"); | |
| 219 | |
| 220 info.codec_fourcc = VP9_FOURCC; | |
| 221 info.time_base.numerator = enc_cfg.g_timebase.num; | |
| 222 info.time_base.denominator = enc_cfg.g_timebase.den; | |
| 223 if (vpx_svc_get_layer_resolution(&svc_ctx, svc_ctx.spatial_layers - 1, | |
| 224 (unsigned int *)&info.frame_width, | |
| 225 (unsigned int *)&info.frame_height) != | |
| 226 VPX_CODEC_OK) { | |
| 227 die("Failed to get output resolution"); | |
| 228 } | |
| 229 writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF, | |
| 230 &info); | |
| 231 if (!writer) | |
| 232 die("Failed to open %s for writing\n", app_input.output_filename); | |
| 233 | |
| 234 // skip initial frames | |
| 235 for (i = 0; i < app_input.frames_to_skip; ++i) | |
| 236 vpx_img_read(&raw, infile); | |
| 237 | |
| 238 // Encode frames | |
| 239 while (frame_cnt < app_input.frames_to_code) { | |
| 240 if (!vpx_img_read(&raw, infile)) | |
| 241 break; | |
| 242 | |
| 243 res = vpx_svc_encode(&svc_ctx, &codec, &raw, pts, frame_duration, | |
| 244 VPX_DL_REALTIME); | |
| 245 printf("%s", vpx_svc_get_message(&svc_ctx)); | |
| 246 if (res != VPX_CODEC_OK) { | |
| 247 die_codec(&codec, "Failed to encode frame"); | |
| 248 } | |
| 249 if (vpx_svc_get_frame_size(&svc_ctx) > 0) { | |
| 250 vpx_video_writer_write_frame(writer, | |
| 251 vpx_svc_get_buffer(&svc_ctx), | |
| 252 vpx_svc_get_frame_size(&svc_ctx), | |
| 253 pts); | |
| 254 } | |
| 255 ++frame_cnt; | |
| 256 pts += frame_duration; | |
| 257 } | |
| 258 | |
| 259 printf("Processed %d frames\n", frame_cnt); | |
| 260 | |
| 261 fclose(infile); | |
| 262 if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); | |
| 263 | |
| 264 vpx_video_writer_close(writer); | |
| 265 | |
| 266 vpx_img_free(&raw); | |
| 267 | |
| 268 // display average size, psnr | |
| 269 printf("%s", vpx_svc_dump_statistics(&svc_ctx)); | |
| 270 | |
| 271 vpx_svc_release(&svc_ctx); | |
| 272 | |
| 273 return EXIT_SUCCESS; | |
| 274 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 181493009:
libvpx: Pull from upstream (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/deps/third_party/libvpx/