ref: e8860693eaaa606f865ab3166ae09fba32235beb
dir: /examples/vp9_spatial_svc_encoder.c/
/* * Copyright (c) 2012 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ /* * This is an example demonstrating how to implement a multi-layer * VP9 encoding scheme based on spatial scalability for video applications * that benefit from a scalable bitstream. */ #include <stdarg.h> #include <stdlib.h> #include <string.h> #include <time.h> #include "./args.h" #include "./tools_common.h" #include "./video_writer.h" #include "vpx/svc_context.h" #include "vpx/vp8cx.h" #include "vpx/vpx_encoder.h" #include "./vpxstats.h" static const arg_def_t skip_frames_arg = ARG_DEF("s", "skip-frames", 1, "input frames to skip"); static const arg_def_t frames_arg = ARG_DEF("f", "frames", 1, "number of frames to encode"); static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width"); static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height"); static const arg_def_t timebase_arg = ARG_DEF("t", "timebase", 1, "timebase (num/den)"); static const arg_def_t bitrate_arg = ARG_DEF( "b", "target-bitrate", 1, "encoding bitrate, in kilobits per second"); static const arg_def_t spatial_layers_arg = ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers"); static const arg_def_t temporal_layers_arg = ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers"); static const arg_def_t kf_dist_arg = ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes"); static const arg_def_t scale_factors_arg = ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)"); static const arg_def_t passes_arg = ARG_DEF("p", "passes", 1, "Number of passes (1/2)"); static const arg_def_t pass_arg = ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)"); static const arg_def_t fpf_name_arg = ARG_DEF(NULL, "fpf", 1, "First pass statistics file name"); static const arg_def_t min_q_arg = ARG_DEF(NULL, "min-q", 1, "Minimum quantizer"); static const arg_def_t max_q_arg = ARG_DEF(NULL, "max-q", 1, "Maximum quantizer"); static const arg_def_t min_bitrate_arg = ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate"); static const arg_def_t max_bitrate_arg = ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate"); static const arg_def_t lag_in_frame_arg = ARG_DEF(NULL, "lag-in-frames", 1, "Number of frame to input before " "generating any outputs"); static const arg_def_t rc_end_usage_arg = ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q"); #if CONFIG_VP9_HIGHBITDEPTH static const struct arg_enum_list bitdepth_enum[] = { {"8", VPX_BITS_8}, {"10", VPX_BITS_10}, {"12", VPX_BITS_12}, {NULL, 0} }; static const arg_def_t bitdepth_arg = ARG_DEF_ENUM("d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ", bitdepth_enum); #endif // CONFIG_VP9_HIGHBITDEPTH static const arg_def_t *svc_args[] = { &frames_arg, &width_arg, &height_arg, &timebase_arg, &bitrate_arg, &skip_frames_arg, &spatial_layers_arg, &kf_dist_arg, &scale_factors_arg, &passes_arg, &pass_arg, &fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg, &max_bitrate_arg, &temporal_layers_arg, &lag_in_frame_arg, #if CONFIG_VP9_HIGHBITDEPTH &bitdepth_arg, #endif &rc_end_usage_arg, NULL }; static const uint32_t default_frames_to_skip = 0; static const uint32_t default_frames_to_code = 60 * 60; static const uint32_t default_width = 1920; static const uint32_t default_height = 1080; static const uint32_t default_timebase_num = 1; static const uint32_t default_timebase_den = 60; static const uint32_t default_bitrate = 1000; static const uint32_t default_spatial_layers = 5; static const uint32_t default_temporal_layers = 1; static const uint32_t default_kf_dist = 100; typedef struct { const char *input_filename; const char *output_filename; uint32_t frames_to_code; uint32_t frames_to_skip; struct VpxInputContext input_ctx; stats_io_t rc_stats; int passes; int pass; } AppInput; static const char *exec_name; void usage_exit() { fprintf(stderr, "Usage: %s <options> input_filename output_filename\n", exec_name); fprintf(stderr, "Options:\n"); arg_show_usage(stderr, svc_args); exit(EXIT_FAILURE); } static void parse_command_line(int argc, const char **argv_, AppInput *app_input, SvcContext *svc_ctx, vpx_codec_enc_cfg_t *enc_cfg) { struct arg arg = {0}; char **argv = NULL; char **argi = NULL; char **argj = NULL; vpx_codec_err_t res; int passes = 0; int pass = 0; const char *fpf_file_name = NULL; unsigned int min_bitrate = 0; unsigned int max_bitrate = 0; char string_options[1024] = {0}; // initialize SvcContext with parameters that will be passed to vpx_svc_init svc_ctx->log_level = SVC_LOG_DEBUG; svc_ctx->spatial_layers = default_spatial_layers; svc_ctx->temporal_layers = default_temporal_layers; // start with default encoder configuration res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0); if (res) { die("Failed to get config: %s\n", vpx_codec_err_to_string(res)); } // update enc_cfg with app default values enc_cfg->g_w = default_width; enc_cfg->g_h = default_height; enc_cfg->g_timebase.num = default_timebase_num; enc_cfg->g_timebase.den = default_timebase_den; enc_cfg->rc_target_bitrate = default_bitrate; enc_cfg->kf_min_dist = default_kf_dist; enc_cfg->kf_max_dist = default_kf_dist; enc_cfg->rc_end_usage = VPX_CQ; // initialize AppInput with default values app_input->frames_to_code = default_frames_to_code; app_input->frames_to_skip = default_frames_to_skip; // process command line options argv = argv_dup(argc - 1, argv_ + 1); for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) { arg.argv_step = 1; if (arg_match(&arg, &frames_arg, argi)) { app_input->frames_to_code = arg_parse_uint(&arg); } else if (arg_match(&arg, &width_arg, argi)) { enc_cfg->g_w = arg_parse_uint(&arg); } else if (arg_match(&arg, &height_arg, argi)) { enc_cfg->g_h = arg_parse_uint(&arg); } else if (arg_match(&arg, &timebase_arg, argi)) { enc_cfg->g_timebase = arg_parse_rational(&arg); } else if (arg_match(&arg, &bitrate_arg, argi)) { enc_cfg->rc_target_bitrate = arg_parse_uint(&arg); } else if (arg_match(&arg, &skip_frames_arg, argi)) { app_input->frames_to_skip = arg_parse_uint(&arg); } else if (arg_match(&arg, &spatial_layers_arg, argi)) { svc_ctx->spatial_layers = arg_parse_uint(&arg); } else if (arg_match(&arg, &temporal_layers_arg, argi)) { svc_ctx->temporal_layers = arg_parse_uint(&arg); } else if (arg_match(&arg, &kf_dist_arg, argi)) { enc_cfg->kf_min_dist = arg_parse_uint(&arg); enc_cfg->kf_max_dist = enc_cfg->kf_min_dist; } else if (arg_match(&arg, &scale_factors_arg, argi)) { snprintf(string_options, sizeof(string_options), "%s scale-factors=%s", string_options, arg.val); } else if (arg_match(&arg, &passes_arg, argi)) { passes = arg_parse_uint(&arg); if (passes < 1 || passes > 2) { die("Error: Invalid number of passes (%d)\n", passes); } } else if (arg_match(&arg, &pass_arg, argi)) { pass = arg_parse_uint(&arg); if (pass < 1 || pass > 2) { die("Error: Invalid pass selected (%d)\n", pass); } } else if (arg_match(&arg, &fpf_name_arg, argi)) { fpf_file_name = arg.val; } else if (arg_match(&arg, &min_q_arg, argi)) { snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s", string_options, arg.val); } else if (arg_match(&arg, &max_q_arg, argi)) { snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s", string_options, arg.val); } else if (arg_match(&arg, &min_bitrate_arg, argi)) { min_bitrate = arg_parse_uint(&arg); } else if (arg_match(&arg, &max_bitrate_arg, argi)) { max_bitrate = arg_parse_uint(&arg); } else if (arg_match(&arg, &lag_in_frame_arg, argi)) { enc_cfg->g_lag_in_frames = arg_parse_uint(&arg); } else if (arg_match(&arg, &rc_end_usage_arg, argi)) { enc_cfg->rc_end_usage = arg_parse_uint(&arg); #if CONFIG_VP9_HIGHBITDEPTH } else if (arg_match(&arg, &bitdepth_arg, argi)) { enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg); switch (enc_cfg->g_bit_depth) { case VPX_BITS_8: enc_cfg->g_input_bit_depth = 8; enc_cfg->g_profile = 0; break; case VPX_BITS_10: enc_cfg->g_input_bit_depth = 10; enc_cfg->g_profile = 2; break; case VPX_BITS_12: enc_cfg->g_input_bit_depth = 12; enc_cfg->g_profile = 2; break; default: die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth); break; } #endif // CONFIG_VP9_HIGHBITDEPTH } else { ++argj; } } // There will be a space in front of the string options if (strlen(string_options) > 0) vpx_svc_set_options(svc_ctx, string_options + 1); if (passes == 0 || passes == 1) { if (pass) { fprintf(stderr, "pass is ignored since there's only one pass\n"); } enc_cfg->g_pass = VPX_RC_ONE_PASS; } else { if (pass == 0) { die("pass must be specified when passes is 2\n"); } if (fpf_file_name == NULL) { die("fpf must be specified when passes is 2\n"); } if (pass == 1) { enc_cfg->g_pass = VPX_RC_FIRST_PASS; if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) { fatal("Failed to open statistics store"); } } else { enc_cfg->g_pass = VPX_RC_LAST_PASS; if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) { fatal("Failed to open statistics store"); } enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats); } app_input->passes = passes; app_input->pass = pass; } if (enc_cfg->rc_target_bitrate > 0) { if (min_bitrate > 0) { enc_cfg->rc_2pass_vbr_minsection_pct = min_bitrate * 100 / enc_cfg->rc_target_bitrate; } if (max_bitrate > 0) { enc_cfg->rc_2pass_vbr_maxsection_pct = max_bitrate * 100 / enc_cfg->rc_target_bitrate; } } // Check for unrecognized options for (argi = argv; *argi; ++argi) if (argi[0][0] == '-' && strlen(argi[0]) > 1) die("Error: Unrecognized option %s\n", *argi); if (argv[0] == NULL || argv[1] == 0) { usage_exit(); } app_input->input_filename = argv[0]; app_input->output_filename = argv[1]; free(argv); if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 || enc_cfg->g_h % 2) die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h); printf( "Codec %s\nframes: %d, skip: %d\n" "layers: %d\n" "width %d, height: %d,\n" "num: %d, den: %d, bitrate: %d,\n" "gop size: %d\n", vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code, app_input->frames_to_skip, svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h, enc_cfg->g_timebase.num, enc_cfg->g_timebase.den, enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist); } int main(int argc, const char **argv) { AppInput app_input = {0}; VpxVideoWriter *writer = NULL; VpxVideoInfo info = {0}; vpx_codec_ctx_t codec; vpx_codec_enc_cfg_t enc_cfg; SvcContext svc_ctx; uint32_t i; uint32_t frame_cnt = 0; vpx_image_t raw; vpx_codec_err_t res; int pts = 0; /* PTS starts at 0 */ int frame_duration = 1; /* 1 timebase tick per frame */ FILE *infile = NULL; int end_of_stream = 0; int frames_received = 0; memset(&svc_ctx, 0, sizeof(svc_ctx)); svc_ctx.log_print = 1; exec_name = argv[0]; parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg); // Allocate image buffer #if CONFIG_VP9_HIGHBITDEPTH if (!vpx_img_alloc(&raw, enc_cfg.g_input_bit_depth == 8 ? VPX_IMG_FMT_I420 : VPX_IMG_FMT_I42016, enc_cfg.g_w, enc_cfg.g_h, 32)) { die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); } #else if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) { die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h); } #endif // CONFIG_VP9_HIGHBITDEPTH if (!(infile = fopen(app_input.input_filename, "rb"))) die("Failed to open %s for reading\n", app_input.input_filename); // Initialize codec if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) != VPX_CODEC_OK) die("Failed to initialize encoder\n"); info.codec_fourcc = VP9_FOURCC; info.time_base.numerator = enc_cfg.g_timebase.num; info.time_base.denominator = enc_cfg.g_timebase.den; if (!(app_input.passes == 2 && app_input.pass == 1)) { // We don't save the bitstream for the 1st pass on two pass rate control writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF, &info); if (!writer) die("Failed to open %s for writing\n", app_input.output_filename); } // skip initial frames for (i = 0; i < app_input.frames_to_skip; ++i) vpx_img_read(&raw, infile); // Encode frames while (!end_of_stream) { vpx_codec_iter_t iter = NULL; const vpx_codec_cx_pkt_t *cx_pkt; if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) { // We need one extra vpx_svc_encode call at end of stream to flush // encoder and get remaining data end_of_stream = 1; } res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw), pts, frame_duration, VPX_DL_GOOD_QUALITY); printf("%s", vpx_svc_get_message(&svc_ctx)); if (res != VPX_CODEC_OK) { die_codec(&codec, "Failed to encode frame"); } while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) { switch (cx_pkt->kind) { case VPX_CODEC_CX_FRAME_PKT: { if (cx_pkt->data.frame.sz > 0) vpx_video_writer_write_frame(writer, cx_pkt->data.frame.buf, cx_pkt->data.frame.sz, cx_pkt->data.frame.pts); printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received, !!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY), (int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts); ++frames_received; break; } case VPX_CODEC_STATS_PKT: { stats_write(&app_input.rc_stats, cx_pkt->data.twopass_stats.buf, cx_pkt->data.twopass_stats.sz); break; } default: { break; } } } if (!end_of_stream) { ++frame_cnt; pts += frame_duration; } } printf("Processed %d frames\n", frame_cnt); fclose(infile); if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); if (app_input.passes == 2) stats_close(&app_input.rc_stats, 1); if (writer) { vpx_video_writer_close(writer); } vpx_img_free(&raw); // display average size, psnr printf("%s", vpx_svc_dump_statistics(&svc_ctx)); vpx_svc_release(&svc_ctx); return EXIT_SUCCESS; }