920 строки
35 KiB
C
920 строки
35 KiB
C
/*
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* Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/*
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* This is an example demonstrating how to implement a multi-layer
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* VP9 encoding scheme based on spatial scalability for video applications
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* that benefit from a scalable bitstream.
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*/
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#include <math.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "../args.h"
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#include "../tools_common.h"
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#include "../video_writer.h"
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#include "../vpx_ports/vpx_timer.h"
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#include "vpx/svc_context.h"
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#include "vpx/vp8cx.h"
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#include "vpx/vpx_encoder.h"
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#include "../vpxstats.h"
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#include "vp9/encoder/vp9_encoder.h"
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#define OUTPUT_RC_STATS 1
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static const arg_def_t skip_frames_arg =
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ARG_DEF("s", "skip-frames", 1, "input frames to skip");
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static const arg_def_t frames_arg =
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ARG_DEF("f", "frames", 1, "number of frames to encode");
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static const arg_def_t threads_arg =
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ARG_DEF("th", "threads", 1, "number of threads to use");
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#if OUTPUT_RC_STATS
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static const arg_def_t output_rc_stats_arg =
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ARG_DEF("rcstat", "output_rc_stats", 1, "output rc stats");
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#endif
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static const arg_def_t width_arg = ARG_DEF("w", "width", 1, "source width");
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static const arg_def_t height_arg = ARG_DEF("h", "height", 1, "source height");
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static const arg_def_t timebase_arg =
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ARG_DEF("t", "timebase", 1, "timebase (num/den)");
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static const arg_def_t bitrate_arg = ARG_DEF(
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"b", "target-bitrate", 1, "encoding bitrate, in kilobits per second");
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static const arg_def_t spatial_layers_arg =
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ARG_DEF("sl", "spatial-layers", 1, "number of spatial SVC layers");
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static const arg_def_t temporal_layers_arg =
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ARG_DEF("tl", "temporal-layers", 1, "number of temporal SVC layers");
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static const arg_def_t temporal_layering_mode_arg =
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ARG_DEF("tlm", "temporal-layering-mode", 1, "temporal layering scheme."
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"VP9E_TEMPORAL_LAYERING_MODE");
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static const arg_def_t kf_dist_arg =
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ARG_DEF("k", "kf-dist", 1, "number of frames between keyframes");
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static const arg_def_t scale_factors_arg =
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ARG_DEF("r", "scale-factors", 1, "scale factors (lowest to highest layer)");
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static const arg_def_t passes_arg =
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ARG_DEF("p", "passes", 1, "Number of passes (1/2)");
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static const arg_def_t pass_arg =
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ARG_DEF(NULL, "pass", 1, "Pass to execute (1/2)");
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static const arg_def_t fpf_name_arg =
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ARG_DEF(NULL, "fpf", 1, "First pass statistics file name");
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static const arg_def_t min_q_arg =
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ARG_DEF(NULL, "min-q", 1, "Minimum quantizer");
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static const arg_def_t max_q_arg =
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ARG_DEF(NULL, "max-q", 1, "Maximum quantizer");
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static const arg_def_t min_bitrate_arg =
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ARG_DEF(NULL, "min-bitrate", 1, "Minimum bitrate");
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static const arg_def_t max_bitrate_arg =
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ARG_DEF(NULL, "max-bitrate", 1, "Maximum bitrate");
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static const arg_def_t lag_in_frame_arg =
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ARG_DEF(NULL, "lag-in-frames", 1, "Number of frame to input before "
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"generating any outputs");
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static const arg_def_t rc_end_usage_arg =
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ARG_DEF(NULL, "rc-end-usage", 1, "0 - 3: VBR, CBR, CQ, Q");
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static const arg_def_t speed_arg =
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ARG_DEF("sp", "speed", 1, "speed configuration");
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static const arg_def_t aqmode_arg =
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ARG_DEF("aq", "aqmode", 1, "aq-mode off/on");
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#if CONFIG_VP9_HIGHBITDEPTH
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static const struct arg_enum_list bitdepth_enum[] = {
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{"8", VPX_BITS_8},
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{"10", VPX_BITS_10},
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{"12", VPX_BITS_12},
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{NULL, 0}
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};
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static const arg_def_t bitdepth_arg =
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ARG_DEF_ENUM("d", "bit-depth", 1, "Bit depth for codec 8, 10 or 12. ",
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bitdepth_enum);
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#endif // CONFIG_VP9_HIGHBITDEPTH
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static const arg_def_t *svc_args[] = {
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&frames_arg, &width_arg, &height_arg,
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&timebase_arg, &bitrate_arg, &skip_frames_arg, &spatial_layers_arg,
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&kf_dist_arg, &scale_factors_arg, &passes_arg, &pass_arg,
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&fpf_name_arg, &min_q_arg, &max_q_arg, &min_bitrate_arg,
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&max_bitrate_arg, &temporal_layers_arg, &temporal_layering_mode_arg,
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&lag_in_frame_arg, &threads_arg, &aqmode_arg,
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#if OUTPUT_RC_STATS
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&output_rc_stats_arg,
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#endif
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#if CONFIG_VP9_HIGHBITDEPTH
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&bitdepth_arg,
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#endif
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&speed_arg,
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&rc_end_usage_arg, NULL
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};
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static const uint32_t default_frames_to_skip = 0;
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static const uint32_t default_frames_to_code = 60 * 60;
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static const uint32_t default_width = 1920;
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static const uint32_t default_height = 1080;
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static const uint32_t default_timebase_num = 1;
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static const uint32_t default_timebase_den = 60;
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static const uint32_t default_bitrate = 1000;
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static const uint32_t default_spatial_layers = 5;
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static const uint32_t default_temporal_layers = 1;
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static const uint32_t default_kf_dist = 100;
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static const uint32_t default_temporal_layering_mode = 0;
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static const uint32_t default_output_rc_stats = 0;
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static const int32_t default_speed = -1; // -1 means use library default.
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static const uint32_t default_threads = 0; // zero means use library default.
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typedef struct {
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const char *input_filename;
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const char *output_filename;
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uint32_t frames_to_code;
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uint32_t frames_to_skip;
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struct VpxInputContext input_ctx;
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stats_io_t rc_stats;
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int passes;
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int pass;
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} AppInput;
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static const char *exec_name;
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void usage_exit(void) {
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fprintf(stderr, "Usage: %s <options> input_filename output_filename\n",
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exec_name);
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fprintf(stderr, "Options:\n");
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arg_show_usage(stderr, svc_args);
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exit(EXIT_FAILURE);
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}
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static void parse_command_line(int argc, const char **argv_,
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AppInput *app_input, SvcContext *svc_ctx,
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vpx_codec_enc_cfg_t *enc_cfg) {
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struct arg arg = {0};
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char **argv = NULL;
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char **argi = NULL;
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char **argj = NULL;
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vpx_codec_err_t res;
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int passes = 0;
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int pass = 0;
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const char *fpf_file_name = NULL;
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unsigned int min_bitrate = 0;
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unsigned int max_bitrate = 0;
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char string_options[1024] = {0};
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// initialize SvcContext with parameters that will be passed to vpx_svc_init
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svc_ctx->log_level = SVC_LOG_DEBUG;
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svc_ctx->spatial_layers = default_spatial_layers;
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svc_ctx->temporal_layers = default_temporal_layers;
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svc_ctx->temporal_layering_mode = default_temporal_layering_mode;
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#if OUTPUT_RC_STATS
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svc_ctx->output_rc_stat = default_output_rc_stats;
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#endif
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svc_ctx->speed = default_speed;
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svc_ctx->threads = default_threads;
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// start with default encoder configuration
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res = vpx_codec_enc_config_default(vpx_codec_vp9_cx(), enc_cfg, 0);
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if (res) {
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die("Failed to get config: %s\n", vpx_codec_err_to_string(res));
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}
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// update enc_cfg with app default values
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enc_cfg->g_w = default_width;
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enc_cfg->g_h = default_height;
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enc_cfg->g_timebase.num = default_timebase_num;
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enc_cfg->g_timebase.den = default_timebase_den;
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enc_cfg->rc_target_bitrate = default_bitrate;
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enc_cfg->kf_min_dist = default_kf_dist;
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enc_cfg->kf_max_dist = default_kf_dist;
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enc_cfg->rc_end_usage = VPX_CQ;
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// initialize AppInput with default values
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app_input->frames_to_code = default_frames_to_code;
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app_input->frames_to_skip = default_frames_to_skip;
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// process command line options
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argv = argv_dup(argc - 1, argv_ + 1);
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for (argi = argj = argv; (*argj = *argi); argi += arg.argv_step) {
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arg.argv_step = 1;
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if (arg_match(&arg, &frames_arg, argi)) {
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app_input->frames_to_code = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &width_arg, argi)) {
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enc_cfg->g_w = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &height_arg, argi)) {
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enc_cfg->g_h = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &timebase_arg, argi)) {
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enc_cfg->g_timebase = arg_parse_rational(&arg);
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} else if (arg_match(&arg, &bitrate_arg, argi)) {
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enc_cfg->rc_target_bitrate = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &skip_frames_arg, argi)) {
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app_input->frames_to_skip = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &spatial_layers_arg, argi)) {
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svc_ctx->spatial_layers = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &temporal_layers_arg, argi)) {
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svc_ctx->temporal_layers = arg_parse_uint(&arg);
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#if OUTPUT_RC_STATS
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} else if (arg_match(&arg, &output_rc_stats_arg, argi)) {
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svc_ctx->output_rc_stat = arg_parse_uint(&arg);
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#endif
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} else if (arg_match(&arg, &speed_arg, argi)) {
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svc_ctx->speed = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &aqmode_arg, argi)) {
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svc_ctx->aqmode = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &threads_arg, argi)) {
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svc_ctx->threads = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &temporal_layering_mode_arg, argi)) {
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svc_ctx->temporal_layering_mode =
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enc_cfg->temporal_layering_mode = arg_parse_int(&arg);
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if (svc_ctx->temporal_layering_mode) {
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enc_cfg->g_error_resilient = 1;
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}
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} else if (arg_match(&arg, &kf_dist_arg, argi)) {
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enc_cfg->kf_min_dist = arg_parse_uint(&arg);
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enc_cfg->kf_max_dist = enc_cfg->kf_min_dist;
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} else if (arg_match(&arg, &scale_factors_arg, argi)) {
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snprintf(string_options, sizeof(string_options), "%s scale-factors=%s",
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string_options, arg.val);
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} else if (arg_match(&arg, &passes_arg, argi)) {
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passes = arg_parse_uint(&arg);
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if (passes < 1 || passes > 2) {
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die("Error: Invalid number of passes (%d)\n", passes);
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}
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} else if (arg_match(&arg, &pass_arg, argi)) {
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pass = arg_parse_uint(&arg);
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if (pass < 1 || pass > 2) {
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die("Error: Invalid pass selected (%d)\n", pass);
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}
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} else if (arg_match(&arg, &fpf_name_arg, argi)) {
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fpf_file_name = arg.val;
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} else if (arg_match(&arg, &min_q_arg, argi)) {
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snprintf(string_options, sizeof(string_options), "%s min-quantizers=%s",
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string_options, arg.val);
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} else if (arg_match(&arg, &max_q_arg, argi)) {
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snprintf(string_options, sizeof(string_options), "%s max-quantizers=%s",
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string_options, arg.val);
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} else if (arg_match(&arg, &min_bitrate_arg, argi)) {
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min_bitrate = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &max_bitrate_arg, argi)) {
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max_bitrate = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &lag_in_frame_arg, argi)) {
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enc_cfg->g_lag_in_frames = arg_parse_uint(&arg);
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} else if (arg_match(&arg, &rc_end_usage_arg, argi)) {
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enc_cfg->rc_end_usage = arg_parse_uint(&arg);
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#if CONFIG_VP9_HIGHBITDEPTH
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} else if (arg_match(&arg, &bitdepth_arg, argi)) {
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enc_cfg->g_bit_depth = arg_parse_enum_or_int(&arg);
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switch (enc_cfg->g_bit_depth) {
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case VPX_BITS_8:
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enc_cfg->g_input_bit_depth = 8;
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enc_cfg->g_profile = 0;
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break;
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case VPX_BITS_10:
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enc_cfg->g_input_bit_depth = 10;
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enc_cfg->g_profile = 2;
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break;
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case VPX_BITS_12:
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enc_cfg->g_input_bit_depth = 12;
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enc_cfg->g_profile = 2;
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break;
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default:
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die("Error: Invalid bit depth selected (%d)\n", enc_cfg->g_bit_depth);
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break;
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}
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#endif // CONFIG_VP9_HIGHBITDEPTH
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} else {
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++argj;
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}
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}
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// There will be a space in front of the string options
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if (strlen(string_options) > 0)
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vpx_svc_set_options(svc_ctx, string_options + 1);
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if (passes == 0 || passes == 1) {
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if (pass) {
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fprintf(stderr, "pass is ignored since there's only one pass\n");
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}
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enc_cfg->g_pass = VPX_RC_ONE_PASS;
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} else {
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if (pass == 0) {
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die("pass must be specified when passes is 2\n");
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}
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if (fpf_file_name == NULL) {
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die("fpf must be specified when passes is 2\n");
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}
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if (pass == 1) {
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enc_cfg->g_pass = VPX_RC_FIRST_PASS;
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if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 0)) {
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fatal("Failed to open statistics store");
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}
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} else {
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enc_cfg->g_pass = VPX_RC_LAST_PASS;
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if (!stats_open_file(&app_input->rc_stats, fpf_file_name, 1)) {
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fatal("Failed to open statistics store");
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}
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enc_cfg->rc_twopass_stats_in = stats_get(&app_input->rc_stats);
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}
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app_input->passes = passes;
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app_input->pass = pass;
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}
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if (enc_cfg->rc_target_bitrate > 0) {
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if (min_bitrate > 0) {
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enc_cfg->rc_2pass_vbr_minsection_pct =
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min_bitrate * 100 / enc_cfg->rc_target_bitrate;
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}
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if (max_bitrate > 0) {
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enc_cfg->rc_2pass_vbr_maxsection_pct =
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max_bitrate * 100 / enc_cfg->rc_target_bitrate;
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}
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}
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// Check for unrecognized options
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for (argi = argv; *argi; ++argi)
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if (argi[0][0] == '-' && strlen(argi[0]) > 1)
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die("Error: Unrecognized option %s\n", *argi);
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if (argv[0] == NULL || argv[1] == 0) {
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usage_exit();
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}
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app_input->input_filename = argv[0];
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app_input->output_filename = argv[1];
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free(argv);
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if (enc_cfg->g_w < 16 || enc_cfg->g_w % 2 || enc_cfg->g_h < 16 ||
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enc_cfg->g_h % 2)
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die("Invalid resolution: %d x %d\n", enc_cfg->g_w, enc_cfg->g_h);
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printf(
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"Codec %s\nframes: %d, skip: %d\n"
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"layers: %d\n"
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"width %d, height: %d,\n"
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"num: %d, den: %d, bitrate: %d,\n"
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"gop size: %d\n",
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vpx_codec_iface_name(vpx_codec_vp9_cx()), app_input->frames_to_code,
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app_input->frames_to_skip,
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svc_ctx->spatial_layers, enc_cfg->g_w, enc_cfg->g_h,
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enc_cfg->g_timebase.num, enc_cfg->g_timebase.den,
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enc_cfg->rc_target_bitrate, enc_cfg->kf_max_dist);
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}
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#if OUTPUT_RC_STATS
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// For rate control encoding stats.
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struct RateControlStats {
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// Number of input frames per layer.
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int layer_input_frames[VPX_MAX_LAYERS];
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// Total (cumulative) number of encoded frames per layer.
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int layer_tot_enc_frames[VPX_MAX_LAYERS];
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// Number of encoded non-key frames per layer.
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int layer_enc_frames[VPX_MAX_LAYERS];
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// Framerate per layer (cumulative).
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double layer_framerate[VPX_MAX_LAYERS];
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// Target average frame size per layer (per-frame-bandwidth per layer).
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double layer_pfb[VPX_MAX_LAYERS];
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// Actual average frame size per layer.
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double layer_avg_frame_size[VPX_MAX_LAYERS];
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// Average rate mismatch per layer (|target - actual| / target).
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double layer_avg_rate_mismatch[VPX_MAX_LAYERS];
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// Actual encoding bitrate per layer (cumulative).
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double layer_encoding_bitrate[VPX_MAX_LAYERS];
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// Average of the short-time encoder actual bitrate.
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// TODO(marpan): Should we add these short-time stats for each layer?
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double avg_st_encoding_bitrate;
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// Variance of the short-time encoder actual bitrate.
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double variance_st_encoding_bitrate;
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// Window (number of frames) for computing short-time encoding bitrate.
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int window_size;
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// Number of window measurements.
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int window_count;
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};
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// Note: these rate control stats assume only 1 key frame in the
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// sequence (i.e., first frame only).
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static void set_rate_control_stats(struct RateControlStats *rc,
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vpx_codec_enc_cfg_t *cfg) {
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unsigned int sl, tl;
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// Set the layer (cumulative) framerate and the target layer (non-cumulative)
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// per-frame-bandwidth, for the rate control encoding stats below.
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const double framerate = cfg->g_timebase.den / cfg->g_timebase.num;
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for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
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for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
|
|
const int layer = sl * cfg->ts_number_layers + tl;
|
|
const int tlayer0 = sl * cfg->ts_number_layers;
|
|
if (cfg->ts_number_layers == 1)
|
|
rc->layer_framerate[layer] = framerate;
|
|
else
|
|
rc->layer_framerate[layer] =
|
|
framerate / cfg->ts_rate_decimator[tl];
|
|
if (tl > 0) {
|
|
rc->layer_pfb[layer] = 1000.0 *
|
|
(cfg->layer_target_bitrate[layer] -
|
|
cfg->layer_target_bitrate[layer - 1]) /
|
|
(rc->layer_framerate[layer] -
|
|
rc->layer_framerate[layer - 1]);
|
|
} else {
|
|
rc->layer_pfb[tlayer0] = 1000.0 *
|
|
cfg->layer_target_bitrate[tlayer0] /
|
|
rc->layer_framerate[tlayer0];
|
|
}
|
|
rc->layer_input_frames[layer] = 0;
|
|
rc->layer_enc_frames[layer] = 0;
|
|
rc->layer_tot_enc_frames[layer] = 0;
|
|
rc->layer_encoding_bitrate[layer] = 0.0;
|
|
rc->layer_avg_frame_size[layer] = 0.0;
|
|
rc->layer_avg_rate_mismatch[layer] = 0.0;
|
|
}
|
|
}
|
|
rc->window_count = 0;
|
|
rc->window_size = 15;
|
|
rc->avg_st_encoding_bitrate = 0.0;
|
|
rc->variance_st_encoding_bitrate = 0.0;
|
|
}
|
|
|
|
static void printout_rate_control_summary(struct RateControlStats *rc,
|
|
vpx_codec_enc_cfg_t *cfg,
|
|
int frame_cnt) {
|
|
unsigned int sl, tl;
|
|
int tot_num_frames = 0;
|
|
double perc_fluctuation = 0.0;
|
|
printf("Total number of processed frames: %d\n\n", frame_cnt - 1);
|
|
printf("Rate control layer stats for sl%d tl%d layer(s):\n\n",
|
|
cfg->ss_number_layers, cfg->ts_number_layers);
|
|
for (sl = 0; sl < cfg->ss_number_layers; ++sl) {
|
|
for (tl = 0; tl < cfg->ts_number_layers; ++tl) {
|
|
const int layer = sl * cfg->ts_number_layers + tl;
|
|
const int num_dropped = (tl > 0) ?
|
|
(rc->layer_input_frames[layer] - rc->layer_enc_frames[layer]) :
|
|
(rc->layer_input_frames[layer] - rc->layer_enc_frames[layer] - 1);
|
|
if (!sl)
|
|
tot_num_frames += rc->layer_input_frames[layer];
|
|
rc->layer_encoding_bitrate[layer] = 0.001 * rc->layer_framerate[layer] *
|
|
rc->layer_encoding_bitrate[layer] / tot_num_frames;
|
|
rc->layer_avg_frame_size[layer] = rc->layer_avg_frame_size[layer] /
|
|
rc->layer_enc_frames[layer];
|
|
rc->layer_avg_rate_mismatch[layer] =
|
|
100.0 * rc->layer_avg_rate_mismatch[layer] /
|
|
rc->layer_enc_frames[layer];
|
|
printf("For layer#: sl%d tl%d \n", sl, tl);
|
|
printf("Bitrate (target vs actual): %d %f.0 kbps\n",
|
|
cfg->layer_target_bitrate[layer],
|
|
rc->layer_encoding_bitrate[layer]);
|
|
printf("Average frame size (target vs actual): %f %f bits\n",
|
|
rc->layer_pfb[layer], rc->layer_avg_frame_size[layer]);
|
|
printf("Average rate_mismatch: %f\n",
|
|
rc->layer_avg_rate_mismatch[layer]);
|
|
printf("Number of input frames, encoded (non-key) frames, "
|
|
"and percent dropped frames: %d %d %f.0 \n",
|
|
rc->layer_input_frames[layer], rc->layer_enc_frames[layer],
|
|
100.0 * num_dropped / rc->layer_input_frames[layer]);
|
|
printf("\n");
|
|
}
|
|
}
|
|
rc->avg_st_encoding_bitrate = rc->avg_st_encoding_bitrate / rc->window_count;
|
|
rc->variance_st_encoding_bitrate =
|
|
rc->variance_st_encoding_bitrate / rc->window_count -
|
|
(rc->avg_st_encoding_bitrate * rc->avg_st_encoding_bitrate);
|
|
perc_fluctuation = 100.0 * sqrt(rc->variance_st_encoding_bitrate) /
|
|
rc->avg_st_encoding_bitrate;
|
|
printf("Short-time stats, for window of %d frames: \n", rc->window_size);
|
|
printf("Average, rms-variance, and percent-fluct: %f %f %f \n",
|
|
rc->avg_st_encoding_bitrate,
|
|
sqrt(rc->variance_st_encoding_bitrate),
|
|
perc_fluctuation);
|
|
if (frame_cnt != tot_num_frames)
|
|
die("Error: Number of input frames not equal to output encoded frames != "
|
|
"%d tot_num_frames = %d\n", frame_cnt, tot_num_frames);
|
|
}
|
|
|
|
vpx_codec_err_t parse_superframe_index(const uint8_t *data,
|
|
size_t data_sz,
|
|
uint32_t sizes[8], int *count) {
|
|
// A chunk ending with a byte matching 0xc0 is an invalid chunk unless
|
|
// it is a super frame index. If the last byte of real video compression
|
|
// data is 0xc0 the encoder must add a 0 byte. If we have the marker but
|
|
// not the associated matching marker byte at the front of the index we have
|
|
// an invalid bitstream and need to return an error.
|
|
|
|
uint8_t marker;
|
|
|
|
marker = *(data + data_sz - 1);
|
|
*count = 0;
|
|
|
|
|
|
if ((marker & 0xe0) == 0xc0) {
|
|
const uint32_t frames = (marker & 0x7) + 1;
|
|
const uint32_t mag = ((marker >> 3) & 0x3) + 1;
|
|
const size_t index_sz = 2 + mag * frames;
|
|
|
|
// This chunk is marked as having a superframe index but doesn't have
|
|
// enough data for it, thus it's an invalid superframe index.
|
|
if (data_sz < index_sz)
|
|
return VPX_CODEC_CORRUPT_FRAME;
|
|
|
|
{
|
|
const uint8_t marker2 = *(data + data_sz - index_sz);
|
|
|
|
// This chunk is marked as having a superframe index but doesn't have
|
|
// the matching marker byte at the front of the index therefore it's an
|
|
// invalid chunk.
|
|
if (marker != marker2)
|
|
return VPX_CODEC_CORRUPT_FRAME;
|
|
}
|
|
|
|
{
|
|
// Found a valid superframe index.
|
|
uint32_t i, j;
|
|
const uint8_t *x = &data[data_sz - index_sz + 1];
|
|
|
|
for (i = 0; i < frames; ++i) {
|
|
uint32_t this_sz = 0;
|
|
|
|
for (j = 0; j < mag; ++j)
|
|
this_sz |= (*x++) << (j * 8);
|
|
sizes[i] = this_sz;
|
|
}
|
|
*count = frames;
|
|
}
|
|
}
|
|
return VPX_CODEC_OK;
|
|
}
|
|
#endif
|
|
|
|
// Example pattern for spatial layers and 2 temporal layers used in the
|
|
// bypass/flexible mode. The pattern corresponds to the pattern
|
|
// VP9E_TEMPORAL_LAYERING_MODE_0101 (temporal_layering_mode == 2) used in
|
|
// non-flexible mode.
|
|
void set_frame_flags_bypass_mode(int sl, int tl, int num_spatial_layers,
|
|
int is_key_frame,
|
|
vpx_svc_ref_frame_config_t *ref_frame_config) {
|
|
for (sl = 0; sl < num_spatial_layers; ++sl) {
|
|
if (!tl) {
|
|
if (!sl) {
|
|
ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF |
|
|
VP8_EFLAG_NO_REF_ARF |
|
|
VP8_EFLAG_NO_UPD_GF |
|
|
VP8_EFLAG_NO_UPD_ARF;
|
|
} else {
|
|
if (is_key_frame) {
|
|
ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_LAST |
|
|
VP8_EFLAG_NO_REF_ARF |
|
|
VP8_EFLAG_NO_UPD_GF |
|
|
VP8_EFLAG_NO_UPD_ARF;
|
|
} else {
|
|
ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF |
|
|
VP8_EFLAG_NO_UPD_GF |
|
|
VP8_EFLAG_NO_UPD_ARF;
|
|
}
|
|
}
|
|
} else if (tl == 1) {
|
|
if (!sl) {
|
|
ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_GF |
|
|
VP8_EFLAG_NO_REF_ARF |
|
|
VP8_EFLAG_NO_UPD_LAST |
|
|
VP8_EFLAG_NO_UPD_GF;
|
|
} else {
|
|
ref_frame_config->frame_flags[sl] = VP8_EFLAG_NO_REF_ARF |
|
|
VP8_EFLAG_NO_UPD_LAST |
|
|
VP8_EFLAG_NO_UPD_GF;
|
|
}
|
|
}
|
|
if (tl == 0) {
|
|
ref_frame_config->lst_fb_idx[sl] = sl;
|
|
if (sl)
|
|
ref_frame_config->gld_fb_idx[sl] = sl - 1;
|
|
else
|
|
ref_frame_config->gld_fb_idx[sl] = 0;
|
|
ref_frame_config->alt_fb_idx[sl] = 0;
|
|
} else if (tl == 1) {
|
|
ref_frame_config->lst_fb_idx[sl] = sl;
|
|
ref_frame_config->gld_fb_idx[sl] = num_spatial_layers + sl - 1;
|
|
ref_frame_config->alt_fb_idx[sl] = num_spatial_layers + sl;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
#if OUTPUT_RC_STATS
|
|
VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS] = {NULL};
|
|
struct RateControlStats rc;
|
|
vpx_svc_layer_id_t layer_id;
|
|
vpx_svc_ref_frame_config_t ref_frame_config;
|
|
int sl, tl;
|
|
double sum_bitrate = 0.0;
|
|
double sum_bitrate2 = 0.0;
|
|
double framerate = 30.0;
|
|
#endif
|
|
struct vpx_usec_timer timer;
|
|
int64_t cx_time = 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");
|
|
|
|
#if OUTPUT_RC_STATS
|
|
if (svc_ctx.output_rc_stat) {
|
|
set_rate_control_stats(&rc, &enc_cfg);
|
|
framerate = enc_cfg.g_timebase.den / enc_cfg.g_timebase.num;
|
|
}
|
|
#endif
|
|
|
|
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);
|
|
}
|
|
#if OUTPUT_RC_STATS
|
|
// For now, just write temporal layer streams.
|
|
// TODO(wonkap): do spatial by re-writing superframe.
|
|
if (svc_ctx.output_rc_stat) {
|
|
for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
|
|
char file_name[PATH_MAX];
|
|
|
|
snprintf(file_name, sizeof(file_name), "%s_t%d.ivf",
|
|
app_input.output_filename, tl);
|
|
outfile[tl] = vpx_video_writer_open(file_name, kContainerIVF, &info);
|
|
if (!outfile[tl])
|
|
die("Failed to open %s for writing", file_name);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// skip initial frames
|
|
for (i = 0; i < app_input.frames_to_skip; ++i)
|
|
vpx_img_read(&raw, infile);
|
|
|
|
if (svc_ctx.speed != -1)
|
|
vpx_codec_control(&codec, VP8E_SET_CPUUSED, svc_ctx.speed);
|
|
if (svc_ctx.threads)
|
|
vpx_codec_control(&codec, VP9E_SET_TILE_COLUMNS, (svc_ctx.threads >> 1));
|
|
if (svc_ctx.speed >= 5 && svc_ctx.aqmode == 1)
|
|
vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);
|
|
|
|
|
|
// 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;
|
|
}
|
|
|
|
// For BYPASS/FLEXIBLE mode, set the frame flags (reference and updates)
|
|
// and the buffer indices for each spatial layer of the current
|
|
// (super)frame to be encoded. The temporal layer_id for the current frame
|
|
// also needs to be set.
|
|
// TODO(marpan): Should rename the "VP9E_TEMPORAL_LAYERING_MODE_BYPASS"
|
|
// mode to "VP9E_LAYERING_MODE_BYPASS".
|
|
if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
|
|
layer_id.spatial_layer_id = 0;
|
|
// Example for 2 temporal layers.
|
|
if (frame_cnt % 2 == 0)
|
|
layer_id.temporal_layer_id = 0;
|
|
else
|
|
layer_id.temporal_layer_id = 1;
|
|
// Note that we only set the temporal layer_id, since we are calling
|
|
// the encode for the whole superframe. The encoder will internally loop
|
|
// over all the spatial layers for the current superframe.
|
|
vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
|
|
set_frame_flags_bypass_mode(sl, layer_id.temporal_layer_id,
|
|
svc_ctx.spatial_layers,
|
|
frame_cnt == 0,
|
|
&ref_frame_config);
|
|
vpx_codec_control(&codec, VP9E_SET_SVC_REF_FRAME_CONFIG,
|
|
&ref_frame_config);
|
|
// Keep track of input frames, to account for frame drops in rate control
|
|
// stats/metrics.
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
|
|
layer_id.temporal_layer_id];
|
|
}
|
|
}
|
|
|
|
vpx_usec_timer_start(&timer);
|
|
res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw),
|
|
pts, frame_duration, svc_ctx.speed >= 5 ?
|
|
VPX_DL_REALTIME : VPX_DL_GOOD_QUALITY);
|
|
vpx_usec_timer_mark(&timer);
|
|
cx_time += vpx_usec_timer_elapsed(&timer);
|
|
|
|
printf("%s", vpx_svc_get_message(&svc_ctx));
|
|
fflush(stdout);
|
|
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: {
|
|
SvcInternal_t *const si = (SvcInternal_t *)svc_ctx.internal;
|
|
if (cx_pkt->data.frame.sz > 0) {
|
|
#if OUTPUT_RC_STATS
|
|
uint32_t sizes[8];
|
|
int count = 0;
|
|
#endif
|
|
vpx_video_writer_write_frame(writer,
|
|
cx_pkt->data.frame.buf,
|
|
cx_pkt->data.frame.sz,
|
|
cx_pkt->data.frame.pts);
|
|
#if OUTPUT_RC_STATS
|
|
// TODO(marpan/wonkap): Put this (to line728) in separate function.
|
|
if (svc_ctx.output_rc_stat) {
|
|
vpx_codec_control(&codec, VP9E_GET_SVC_LAYER_ID, &layer_id);
|
|
parse_superframe_index(cx_pkt->data.frame.buf,
|
|
cx_pkt->data.frame.sz, sizes, &count);
|
|
// Note computing input_layer_frames here won't account for frame
|
|
// drops in rate control stats.
|
|
// TODO(marpan): Fix this for non-bypass mode so we can get stats
|
|
// for dropped frames.
|
|
if (svc_ctx.temporal_layering_mode !=
|
|
VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
++rc.layer_input_frames[sl * enc_cfg.ts_number_layers +
|
|
layer_id.temporal_layer_id];
|
|
}
|
|
}
|
|
for (tl = layer_id.temporal_layer_id;
|
|
tl < enc_cfg.ts_number_layers; ++tl) {
|
|
vpx_video_writer_write_frame(outfile[tl],
|
|
cx_pkt->data.frame.buf,
|
|
cx_pkt->data.frame.sz,
|
|
cx_pkt->data.frame.pts);
|
|
}
|
|
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
for (tl = layer_id.temporal_layer_id;
|
|
tl < enc_cfg.ts_number_layers; ++tl) {
|
|
const int layer = sl * enc_cfg.ts_number_layers + tl;
|
|
++rc.layer_tot_enc_frames[layer];
|
|
rc.layer_encoding_bitrate[layer] += 8.0 * sizes[sl];
|
|
// Keep count of rate control stats per layer, for non-key
|
|
// frames.
|
|
if (tl == layer_id.temporal_layer_id &&
|
|
!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
|
|
rc.layer_avg_frame_size[layer] += 8.0 * sizes[sl];
|
|
rc.layer_avg_rate_mismatch[layer] +=
|
|
fabs(8.0 * sizes[sl] - rc.layer_pfb[layer]) /
|
|
rc.layer_pfb[layer];
|
|
++rc.layer_enc_frames[layer];
|
|
}
|
|
}
|
|
}
|
|
|
|
// Update for short-time encoding bitrate states, for moving
|
|
// window of size rc->window, shifted by rc->window / 2.
|
|
// Ignore first window segment, due to key frame.
|
|
if (frame_cnt > rc.window_size) {
|
|
tl = layer_id.temporal_layer_id;
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
sum_bitrate += 0.001 * 8.0 * sizes[sl] * framerate;
|
|
}
|
|
if (frame_cnt % rc.window_size == 0) {
|
|
rc.window_count += 1;
|
|
rc.avg_st_encoding_bitrate += sum_bitrate / rc.window_size;
|
|
rc.variance_st_encoding_bitrate +=
|
|
(sum_bitrate / rc.window_size) *
|
|
(sum_bitrate / rc.window_size);
|
|
sum_bitrate = 0.0;
|
|
}
|
|
}
|
|
|
|
// Second shifted window.
|
|
if (frame_cnt > rc.window_size + rc.window_size / 2) {
|
|
tl = layer_id.temporal_layer_id;
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
sum_bitrate2 += 0.001 * 8.0 * sizes[sl] * framerate;
|
|
}
|
|
|
|
if (frame_cnt > 2 * rc.window_size &&
|
|
frame_cnt % rc.window_size == 0) {
|
|
rc.window_count += 1;
|
|
rc.avg_st_encoding_bitrate += sum_bitrate2 / rc.window_size;
|
|
rc.variance_st_encoding_bitrate +=
|
|
(sum_bitrate2 / rc.window_size) *
|
|
(sum_bitrate2 / rc.window_size);
|
|
sum_bitrate2 = 0.0;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
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);
|
|
if (enc_cfg.ss_number_layers == 1 && enc_cfg.ts_number_layers == 1)
|
|
si->bytes_sum[0] += (int)cx_pkt->data.frame.sz;
|
|
++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;
|
|
}
|
|
}
|
|
|
|
// Compensate for the extra frame count for the bypass mode.
|
|
if (svc_ctx.temporal_layering_mode == VP9E_TEMPORAL_LAYERING_MODE_BYPASS) {
|
|
for (sl = 0; sl < enc_cfg.ss_number_layers; ++sl) {
|
|
const int layer = sl * enc_cfg.ts_number_layers +
|
|
layer_id.temporal_layer_id;
|
|
--rc.layer_input_frames[layer];
|
|
}
|
|
}
|
|
|
|
printf("Processed %d frames\n", frame_cnt);
|
|
fclose(infile);
|
|
#if OUTPUT_RC_STATS
|
|
if (svc_ctx.output_rc_stat) {
|
|
printout_rate_control_summary(&rc, &enc_cfg, frame_cnt);
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
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);
|
|
}
|
|
#if OUTPUT_RC_STATS
|
|
if (svc_ctx.output_rc_stat) {
|
|
for (tl = 0; tl < enc_cfg.ts_number_layers; ++tl) {
|
|
vpx_video_writer_close(outfile[tl]);
|
|
}
|
|
}
|
|
#endif
|
|
printf("Frame cnt and encoding time/FPS stats for encoding: %d %f %f \n",
|
|
frame_cnt,
|
|
1000 * (float)cx_time / (double)(frame_cnt * 1000000),
|
|
1000000 * (double)frame_cnt / (double)cx_time);
|
|
vpx_img_free(&raw);
|
|
// display average size, psnr
|
|
printf("%s", vpx_svc_dump_statistics(&svc_ctx));
|
|
vpx_svc_release(&svc_ctx);
|
|
return EXIT_SUCCESS;
|
|
}
|