440 строки
15 KiB
C
440 строки
15 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 <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/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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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 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 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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#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,
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#if CONFIG_VP9_HIGHBITDEPTH
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&bitdepth_arg,
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#endif
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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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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() {
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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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// 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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} 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, 1024, "%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, 1024, "%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, 1024, "%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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#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(&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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int main(int argc, const char **argv) {
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AppInput app_input = {0};
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VpxVideoWriter *writer = NULL;
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VpxVideoInfo info = {0};
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vpx_codec_ctx_t codec;
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vpx_codec_enc_cfg_t enc_cfg;
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SvcContext svc_ctx;
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uint32_t i;
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uint32_t frame_cnt = 0;
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vpx_image_t raw;
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vpx_codec_err_t res;
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int pts = 0; /* PTS starts at 0 */
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int frame_duration = 1; /* 1 timebase tick per frame */
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FILE *infile = NULL;
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int end_of_stream = 0;
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int frames_received = 0;
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memset(&svc_ctx, 0, sizeof(svc_ctx));
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svc_ctx.log_print = 1;
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exec_name = argv[0];
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parse_command_line(argc, argv, &app_input, &svc_ctx, &enc_cfg);
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// Allocate image buffer
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#if CONFIG_VP9_HIGHBITDEPTH
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if (!vpx_img_alloc(&raw, enc_cfg.g_input_bit_depth == 8 ?
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VPX_IMG_FMT_I420 : VPX_IMG_FMT_I42016,
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enc_cfg.g_w, enc_cfg.g_h, 32)) {
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die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
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}
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#else
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if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, enc_cfg.g_w, enc_cfg.g_h, 32)) {
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die("Failed to allocate image %dx%d\n", enc_cfg.g_w, enc_cfg.g_h);
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}
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#endif // CONFIG_VP9_HIGHBITDEPTH
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if (!(infile = fopen(app_input.input_filename, "rb")))
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die("Failed to open %s for reading\n", app_input.input_filename);
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// Initialize codec
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if (vpx_svc_init(&svc_ctx, &codec, vpx_codec_vp9_cx(), &enc_cfg) !=
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VPX_CODEC_OK)
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die("Failed to initialize encoder\n");
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info.codec_fourcc = VP9_FOURCC;
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info.time_base.numerator = enc_cfg.g_timebase.num;
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info.time_base.denominator = enc_cfg.g_timebase.den;
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if (!(app_input.passes == 2 && app_input.pass == 1)) {
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// We don't save the bitstream for the 1st pass on two pass rate control
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writer = vpx_video_writer_open(app_input.output_filename, kContainerIVF,
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&info);
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if (!writer)
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die("Failed to open %s for writing\n", app_input.output_filename);
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}
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// skip initial frames
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for (i = 0; i < app_input.frames_to_skip; ++i)
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vpx_img_read(&raw, infile);
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// Encode frames
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while (!end_of_stream) {
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vpx_codec_iter_t iter = NULL;
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const vpx_codec_cx_pkt_t *cx_pkt;
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if (frame_cnt >= app_input.frames_to_code || !vpx_img_read(&raw, infile)) {
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// We need one extra vpx_svc_encode call at end of stream to flush
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// encoder and get remaining data
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end_of_stream = 1;
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}
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res = vpx_svc_encode(&svc_ctx, &codec, (end_of_stream ? NULL : &raw),
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pts, frame_duration, VPX_DL_GOOD_QUALITY);
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printf("%s", vpx_svc_get_message(&svc_ctx));
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if (res != VPX_CODEC_OK) {
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die_codec(&codec, "Failed to encode frame");
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}
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while ((cx_pkt = vpx_codec_get_cx_data(&codec, &iter)) != NULL) {
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switch (cx_pkt->kind) {
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case VPX_CODEC_CX_FRAME_PKT: {
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if (cx_pkt->data.frame.sz > 0)
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vpx_video_writer_write_frame(writer,
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cx_pkt->data.frame.buf,
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cx_pkt->data.frame.sz,
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cx_pkt->data.frame.pts);
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printf("SVC frame: %d, kf: %d, size: %d, pts: %d\n", frames_received,
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!!(cx_pkt->data.frame.flags & VPX_FRAME_IS_KEY),
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(int)cx_pkt->data.frame.sz, (int)cx_pkt->data.frame.pts);
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++frames_received;
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break;
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}
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case VPX_CODEC_STATS_PKT: {
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stats_write(&app_input.rc_stats,
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cx_pkt->data.twopass_stats.buf,
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cx_pkt->data.twopass_stats.sz);
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break;
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}
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default: {
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break;
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}
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}
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}
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if (!end_of_stream) {
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++frame_cnt;
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pts += frame_duration;
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}
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}
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printf("Processed %d frames\n", frame_cnt);
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fclose(infile);
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if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec");
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if (app_input.passes == 2)
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stats_close(&app_input.rc_stats, 1);
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if (writer) {
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vpx_video_writer_close(writer);
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|
}
|
|
|
|
vpx_img_free(&raw);
|
|
|
|
// display average size, psnr
|
|
printf("%s", vpx_svc_dump_statistics(&svc_ctx));
|
|
|
|
vpx_svc_release(&svc_ctx);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|