667 lines
25 KiB
C
667 lines
25 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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// This is an example demonstrating how to implement a multi-layer VP9
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// encoding scheme based on temporal scalability for video applications
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// that benefit from a scalable bitstream.
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define VPX_CODEC_DISABLE_COMPAT 1
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#include "./vpx_config.h"
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#include "vpx_ports/vpx_timer.h"
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#include "vpx/vp8cx.h"
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#include "vpx/vpx_encoder.h"
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#include "./tools_common.h"
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#include "./video_writer.h"
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static const char *exec_name;
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void usage_exit() {
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exit(EXIT_FAILURE);
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}
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static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3};
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// For rate control encoding stats.
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struct RateControlMetrics {
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// Number of input frames per layer.
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int layer_input_frames[VPX_TS_MAX_LAYERS];
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// Total (cumulative) number of encoded frames per layer.
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int layer_tot_enc_frames[VPX_TS_MAX_LAYERS];
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// Number of encoded non-key frames per layer.
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int layer_enc_frames[VPX_TS_MAX_LAYERS];
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// Framerate per layer layer (cumulative).
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double layer_framerate[VPX_TS_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_TS_MAX_LAYERS];
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// Actual average frame size per layer.
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double layer_avg_frame_size[VPX_TS_MAX_LAYERS];
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// Average rate mismatch per layer (|target - actual| / target).
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double layer_avg_rate_mismatch[VPX_TS_MAX_LAYERS];
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// Actual encoding bitrate per layer (cumulative).
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double layer_encoding_bitrate[VPX_TS_MAX_LAYERS];
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};
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// Note: these rate control metrics assume only 1 key frame in the
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// sequence (i.e., first frame only). So for temporal pattern# 7
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// (which has key frame for every frame on base layer), the metrics
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// computation will be off/wrong.
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// TODO(marpan): Update these metrics to account for multiple key frames
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// in the stream.
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static void set_rate_control_metrics(struct RateControlMetrics *rc,
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vpx_codec_enc_cfg_t *cfg) {
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unsigned int i = 0;
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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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rc->layer_framerate[0] = framerate / cfg->ts_rate_decimator[0];
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rc->layer_pfb[0] = 1000.0 * cfg->ts_target_bitrate[0] /
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rc->layer_framerate[0];
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for (i = 0; i < cfg->ts_number_layers; ++i) {
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if (i > 0) {
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rc->layer_framerate[i] = framerate / cfg->ts_rate_decimator[i];
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rc->layer_pfb[i] = 1000.0 *
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(cfg->ts_target_bitrate[i] - cfg->ts_target_bitrate[i - 1]) /
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(rc->layer_framerate[i] - rc->layer_framerate[i - 1]);
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}
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rc->layer_input_frames[i] = 0;
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rc->layer_enc_frames[i] = 0;
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rc->layer_tot_enc_frames[i] = 0;
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rc->layer_encoding_bitrate[i] = 0.0;
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rc->layer_avg_frame_size[i] = 0.0;
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rc->layer_avg_rate_mismatch[i] = 0.0;
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}
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}
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static void printout_rate_control_summary(struct RateControlMetrics *rc,
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vpx_codec_enc_cfg_t *cfg,
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int frame_cnt) {
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unsigned int i = 0;
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int tot_num_frames = 0;
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printf("Total number of processed frames: %d\n\n", frame_cnt -1);
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printf("Rate control layer stats for %d layer(s):\n\n",
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cfg->ts_number_layers);
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for (i = 0; i < cfg->ts_number_layers; ++i) {
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const int num_dropped = (i > 0) ?
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(rc->layer_input_frames[i] - rc->layer_enc_frames[i]) :
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(rc->layer_input_frames[i] - rc->layer_enc_frames[i] - 1);
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tot_num_frames += rc->layer_input_frames[i];
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rc->layer_encoding_bitrate[i] = 0.001 * rc->layer_framerate[i] *
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rc->layer_encoding_bitrate[i] / tot_num_frames;
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rc->layer_avg_frame_size[i] = rc->layer_avg_frame_size[i] /
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rc->layer_enc_frames[i];
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rc->layer_avg_rate_mismatch[i] = 100.0 * rc->layer_avg_rate_mismatch[i] /
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rc->layer_enc_frames[i];
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printf("For layer#: %d \n", i);
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printf("Bitrate (target vs actual): %d %f \n", cfg->ts_target_bitrate[i],
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rc->layer_encoding_bitrate[i]);
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printf("Average frame size (target vs actual): %f %f \n", rc->layer_pfb[i],
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rc->layer_avg_frame_size[i]);
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printf("Average rate_mismatch: %f \n", rc->layer_avg_rate_mismatch[i]);
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printf("Number of input frames, encoded (non-key) frames, "
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"and perc dropped frames: %d %d %f \n", rc->layer_input_frames[i],
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rc->layer_enc_frames[i],
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100.0 * num_dropped / rc->layer_input_frames[i]);
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printf("\n");
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}
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if ((frame_cnt - 1) != tot_num_frames)
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die("Error: Number of input frames not equal to output! \n");
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}
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// Temporal scaling parameters:
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// NOTE: The 3 prediction frames cannot be used interchangeably due to
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// differences in the way they are handled throughout the code. The
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// frames should be allocated to layers in the order LAST, GF, ARF.
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// Other combinations work, but may produce slightly inferior results.
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static void set_temporal_layer_pattern(int layering_mode,
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vpx_codec_enc_cfg_t *cfg,
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int *layer_flags,
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int *flag_periodicity) {
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switch (layering_mode) {
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case 0: {
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// 1-layer.
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int ids[1] = {0};
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cfg->ts_periodicity = 1;
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*flag_periodicity = 1;
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cfg->ts_number_layers = 1;
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cfg->ts_rate_decimator[0] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// Update L only.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF;
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break;
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}
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case 1: {
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// 2-layers, 2-frame period.
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int ids[2] = {0, 1};
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cfg->ts_periodicity = 2;
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*flag_periodicity = 2;
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cfg->ts_number_layers = 2;
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cfg->ts_rate_decimator[0] = 2;
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cfg->ts_rate_decimator[1] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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#if 1
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// 0=L, 1=GF, Intra-layer prediction enabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
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layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_REF_ARF;
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#else
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// 0=L, 1=GF, Intra-layer prediction disabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
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layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST;
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#endif
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break;
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}
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case 2: {
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// 2-layers, 3-frame period.
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int ids[3] = {0, 1, 1};
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cfg->ts_periodicity = 3;
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*flag_periodicity = 3;
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cfg->ts_number_layers = 2;
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cfg->ts_rate_decimator[0] = 3;
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cfg->ts_rate_decimator[1] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, Intra-layer prediction enabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[1] =
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layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
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VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
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break;
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}
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case 3: {
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// 3-layers, 6-frame period.
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int ids[6] = {0, 2, 2, 1, 2, 2};
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cfg->ts_periodicity = 6;
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*flag_periodicity = 6;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 6;
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cfg->ts_rate_decimator[1] = 3;
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cfg->ts_rate_decimator[2] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
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VP8_EFLAG_NO_UPD_LAST;
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layer_flags[1] =
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layer_flags[2] =
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layer_flags[4] =
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layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST;
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break;
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}
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case 4: {
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// 3-layers, 4-frame period.
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int ids[4] = {0, 2, 1, 2};
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cfg->ts_periodicity = 4;
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*flag_periodicity = 4;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 4;
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cfg->ts_rate_decimator[1] = 2;
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cfg->ts_rate_decimator[2] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
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VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
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layer_flags[1] =
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layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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break;
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}
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case 5: {
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// 3-layers, 4-frame period.
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int ids[4] = {0, 2, 1, 2};
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cfg->ts_periodicity = 4;
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*flag_periodicity = 4;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 4;
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cfg->ts_rate_decimator[1] = 2;
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cfg->ts_rate_decimator[2] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1, disabled
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// in layer 2.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_ARF;
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layer_flags[1] =
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layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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break;
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}
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case 6: {
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// 3-layers, 4-frame period.
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int ids[4] = {0, 2, 1, 2};
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cfg->ts_periodicity = 4;
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*flag_periodicity = 4;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 4;
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cfg->ts_rate_decimator[1] = 2;
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cfg->ts_rate_decimator[2] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_ARF;
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layer_flags[1] =
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layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
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break;
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}
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case 7: {
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// NOTE: Probably of academic interest only.
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// 5-layers, 16-frame period.
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int ids[16] = {0, 4, 3, 4, 2, 4, 3, 4, 1, 4, 3, 4, 2, 4, 3, 4};
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cfg->ts_periodicity = 16;
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*flag_periodicity = 16;
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cfg->ts_number_layers = 5;
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cfg->ts_rate_decimator[0] = 16;
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cfg->ts_rate_decimator[1] = 8;
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cfg->ts_rate_decimator[2] = 4;
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cfg->ts_rate_decimator[3] = 2;
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cfg->ts_rate_decimator[4] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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layer_flags[0] = VPX_EFLAG_FORCE_KF;
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layer_flags[1] =
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layer_flags[3] =
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layer_flags[5] =
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layer_flags[7] =
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layer_flags[9] =
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layer_flags[11] =
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layer_flags[13] =
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layer_flags[15] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF;
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layer_flags[2] =
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layer_flags[6] =
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layer_flags[10] =
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layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF;
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layer_flags[4] =
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layer_flags[12] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF;
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break;
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}
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case 8: {
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// 2-layers, with sync point at first frame of layer 1.
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int ids[2] = {0, 1};
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cfg->ts_periodicity = 2;
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*flag_periodicity = 8;
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cfg->ts_number_layers = 2;
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cfg->ts_rate_decimator[0] = 2;
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cfg->ts_rate_decimator[1] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF.
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// ARF is used as predictor for all frames, and is only updated on
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// key frame. Sync point every 8 frames.
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// Layer 0: predict from L and ARF, update L and G.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_UPD_ARF;
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// Layer 1: sync point: predict from L and ARF, and update G.
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layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_ARF;
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// Layer 0, predict from L and ARF, update L.
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layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF;
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// Layer 1: predict from L, G and ARF, and update G.
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layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_ENTROPY;
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// Layer 0.
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layer_flags[4] = layer_flags[2];
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// Layer 1.
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layer_flags[5] = layer_flags[3];
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// Layer 0.
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layer_flags[6] = layer_flags[4];
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// Layer 1.
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layer_flags[7] = layer_flags[5];
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break;
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}
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case 9: {
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// 3-layers: Sync points for layer 1 and 2 every 8 frames.
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int ids[4] = {0, 2, 1, 2};
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cfg->ts_periodicity = 4;
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*flag_periodicity = 8;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 4;
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cfg->ts_rate_decimator[1] = 2;
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cfg->ts_rate_decimator[2] = 1;
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memcpy(cfg->ts_layer_id, ids, sizeof(ids));
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// 0=L, 1=GF, 2=ARF.
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layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
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VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
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layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
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VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[3] =
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layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
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layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
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VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
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layer_flags[6] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_ARF;
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layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_ENTROPY;
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break;
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}
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case 10: {
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// 3-layers structure where ARF is used as predictor for all frames,
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// and is only updated on key frame.
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// Sync points for layer 1 and 2 every 8 frames.
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int ids[4] = {0, 2, 1, 2};
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cfg->ts_periodicity = 4;
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*flag_periodicity = 8;
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cfg->ts_number_layers = 3;
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cfg->ts_rate_decimator[0] = 4;
|
|
cfg->ts_rate_decimator[1] = 2;
|
|
cfg->ts_rate_decimator[2] = 1;
|
|
memcpy(cfg->ts_layer_id, ids, sizeof(ids));
|
|
// 0=L, 1=GF, 2=ARF.
|
|
// Layer 0: predict from L and ARF; update L and G.
|
|
layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_REF_GF;
|
|
// Layer 2: sync point: predict from L and ARF; update none.
|
|
layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF |
|
|
VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
|
|
VP8_EFLAG_NO_UPD_ENTROPY;
|
|
// Layer 1: sync point: predict from L and ARF; update G.
|
|
layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_UPD_LAST;
|
|
// Layer 2: predict from L, G, ARF; update none.
|
|
layer_flags[3] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY;
|
|
// Layer 0: predict from L and ARF; update L.
|
|
layer_flags[4] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_REF_GF;
|
|
// Layer 2: predict from L, G, ARF; update none.
|
|
layer_flags[5] = layer_flags[3];
|
|
// Layer 1: predict from L, G, ARF; update G.
|
|
layer_flags[6] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
|
|
// Layer 2: predict from L, G, ARF; update none.
|
|
layer_flags[7] = layer_flags[3];
|
|
break;
|
|
}
|
|
case 11:
|
|
default: {
|
|
// 3-layers structure as in case 10, but no sync/refresh points for
|
|
// layer 1 and 2.
|
|
int ids[4] = {0, 2, 1, 2};
|
|
cfg->ts_periodicity = 4;
|
|
*flag_periodicity = 8;
|
|
cfg->ts_number_layers = 3;
|
|
cfg->ts_rate_decimator[0] = 4;
|
|
cfg->ts_rate_decimator[1] = 2;
|
|
cfg->ts_rate_decimator[2] = 1;
|
|
memcpy(cfg->ts_layer_id, ids, sizeof(ids));
|
|
// 0=L, 1=GF, 2=ARF.
|
|
// Layer 0: predict from L and ARF; update L.
|
|
layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_REF_GF;
|
|
layer_flags[4] = layer_flags[0];
|
|
// Layer 1: predict from L, G, ARF; update G.
|
|
layer_flags[2] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
|
|
layer_flags[6] = layer_flags[2];
|
|
// Layer 2: predict from L, G, ARF; update none.
|
|
layer_flags[1] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
|
|
VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY;
|
|
layer_flags[3] = layer_flags[1];
|
|
layer_flags[5] = layer_flags[1];
|
|
layer_flags[7] = layer_flags[1];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
VpxVideoWriter *outfile[VPX_TS_MAX_LAYERS];
|
|
vpx_codec_ctx_t codec;
|
|
vpx_codec_enc_cfg_t cfg;
|
|
int frame_cnt = 0;
|
|
vpx_image_t raw;
|
|
vpx_codec_err_t res;
|
|
unsigned int width;
|
|
unsigned int height;
|
|
int speed;
|
|
int frame_avail;
|
|
int got_data;
|
|
int flags = 0;
|
|
unsigned int i;
|
|
int pts = 0; // PTS starts at 0.
|
|
int frame_duration = 1; // 1 timebase tick per frame.
|
|
int layering_mode = 0;
|
|
int layer_flags[VPX_TS_MAX_PERIODICITY] = {0};
|
|
int flag_periodicity = 1;
|
|
int max_intra_size_pct;
|
|
vpx_svc_layer_id_t layer_id = {0, 0};
|
|
const VpxInterface *encoder = NULL;
|
|
FILE *infile = NULL;
|
|
struct RateControlMetrics rc;
|
|
int64_t cx_time = 0;
|
|
|
|
exec_name = argv[0];
|
|
// Check usage and arguments.
|
|
if (argc < 11) {
|
|
die("Usage: %s <infile> <outfile> <codec_type(vp8/vp9)> <width> <height> "
|
|
"<rate_num> <rate_den> <speed> <frame_drop_threshold> <mode> "
|
|
"<Rate_0> ... <Rate_nlayers-1> \n", argv[0]);
|
|
}
|
|
|
|
encoder = get_vpx_encoder_by_name(argv[3]);
|
|
if (!encoder)
|
|
die("Unsupported codec.");
|
|
|
|
printf("Using %s\n", vpx_codec_iface_name(encoder->interface()));
|
|
|
|
width = strtol(argv[4], NULL, 0);
|
|
height = strtol(argv[5], NULL, 0);
|
|
if (width < 16 || width % 2 || height < 16 || height % 2) {
|
|
die("Invalid resolution: %d x %d", width, height);
|
|
}
|
|
|
|
layering_mode = strtol(argv[10], NULL, 0);
|
|
if (layering_mode < 0 || layering_mode > 12) {
|
|
die("Invalid layering mode (0..12) %s", argv[10]);
|
|
}
|
|
|
|
if (argc != 11 + mode_to_num_layers[layering_mode]) {
|
|
die("Invalid number of arguments");
|
|
}
|
|
|
|
if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, width, height, 32)) {
|
|
die("Failed to allocate image", width, height);
|
|
}
|
|
|
|
// Populate encoder configuration.
|
|
res = vpx_codec_enc_config_default(encoder->interface(), &cfg, 0);
|
|
if (res) {
|
|
printf("Failed to get config: %s\n", vpx_codec_err_to_string(res));
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
// Update the default configuration with our settings.
|
|
cfg.g_w = width;
|
|
cfg.g_h = height;
|
|
|
|
// Timebase format e.g. 30fps: numerator=1, demoninator = 30.
|
|
cfg.g_timebase.num = strtol(argv[6], NULL, 0);
|
|
cfg.g_timebase.den = strtol(argv[7], NULL, 0);
|
|
|
|
speed = strtol(argv[8], NULL, 0);
|
|
if (speed < 0) {
|
|
die("Invalid speed setting: must be positive");
|
|
}
|
|
|
|
for (i = 11; (int)i < 11 + mode_to_num_layers[layering_mode]; ++i) {
|
|
cfg.ts_target_bitrate[i - 11] = strtol(argv[i], NULL, 0);
|
|
}
|
|
|
|
// Real time parameters.
|
|
cfg.rc_dropframe_thresh = strtol(argv[9], NULL, 0);
|
|
cfg.rc_end_usage = VPX_CBR;
|
|
cfg.rc_resize_allowed = 0;
|
|
cfg.rc_min_quantizer = 2;
|
|
cfg.rc_max_quantizer = 56;
|
|
cfg.rc_undershoot_pct = 50;
|
|
cfg.rc_overshoot_pct = 50;
|
|
cfg.rc_buf_initial_sz = 500;
|
|
cfg.rc_buf_optimal_sz = 600;
|
|
cfg.rc_buf_sz = 1000;
|
|
|
|
// Enable error resilient mode.
|
|
cfg.g_error_resilient = 1;
|
|
cfg.g_lag_in_frames = 0;
|
|
cfg.kf_mode = VPX_KF_DISABLED;
|
|
|
|
// Disable automatic keyframe placement.
|
|
cfg.kf_min_dist = cfg.kf_max_dist = 3000;
|
|
|
|
set_temporal_layer_pattern(layering_mode,
|
|
&cfg,
|
|
layer_flags,
|
|
&flag_periodicity);
|
|
|
|
set_rate_control_metrics(&rc, &cfg);
|
|
|
|
// Target bandwidth for the whole stream.
|
|
// Set to ts_target_bitrate for highest layer (total bitrate).
|
|
cfg.rc_target_bitrate = cfg.ts_target_bitrate[cfg.ts_number_layers - 1];
|
|
|
|
// Open input file.
|
|
if (!(infile = fopen(argv[1], "rb"))) {
|
|
die("Failed to open %s for reading", argv[1]);
|
|
}
|
|
|
|
// Open an output file for each stream.
|
|
for (i = 0; i < cfg.ts_number_layers; ++i) {
|
|
char file_name[PATH_MAX];
|
|
VpxVideoInfo info;
|
|
info.codec_fourcc = encoder->fourcc;
|
|
info.frame_width = cfg.g_w;
|
|
info.frame_height = cfg.g_h;
|
|
info.time_base.numerator = cfg.g_timebase.num;
|
|
info.time_base.denominator = cfg.g_timebase.den;
|
|
|
|
snprintf(file_name, sizeof(file_name), "%s_%d.ivf", argv[2], i);
|
|
outfile[i] = vpx_video_writer_open(file_name, kContainerIVF, &info);
|
|
if (!outfile[i])
|
|
die("Failed to open %s for writing", file_name);
|
|
}
|
|
// No spatial layers in this encoder.
|
|
cfg.ss_number_layers = 1;
|
|
|
|
// Initialize codec.
|
|
if (vpx_codec_enc_init(&codec, encoder->interface(), &cfg, 0))
|
|
die_codec(&codec, "Failed to initialize encoder");
|
|
|
|
if (strncmp(encoder->name, "vp8", 3) == 0) {
|
|
vpx_codec_control(&codec, VP8E_SET_CPUUSED, -speed);
|
|
vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, 1);
|
|
} else if (strncmp(encoder->name, "vp9", 3) == 0) {
|
|
vpx_codec_control(&codec, VP8E_SET_CPUUSED, speed);
|
|
vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);
|
|
vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, 0);
|
|
if (vpx_codec_control(&codec, VP9E_SET_SVC, 1)) {
|
|
die_codec(&codec, "Failed to set SVC");
|
|
}
|
|
}
|
|
vpx_codec_control(&codec, VP8E_SET_STATIC_THRESHOLD, 1);
|
|
vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1);
|
|
// This controls the maximum target size of the key frame.
|
|
// For generating smaller key frames, use a smaller max_intra_size_pct
|
|
// value, like 100 or 200.
|
|
max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5)
|
|
* ((double) cfg.g_timebase.den / cfg.g_timebase.num) / 10.0);
|
|
// For low-quality key frame.
|
|
max_intra_size_pct = 200;
|
|
vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT, max_intra_size_pct);
|
|
|
|
frame_avail = 1;
|
|
while (frame_avail || got_data) {
|
|
struct vpx_usec_timer timer;
|
|
vpx_codec_iter_t iter = NULL;
|
|
const vpx_codec_cx_pkt_t *pkt;
|
|
// Update the temporal layer_id. No spatial layers in this test.
|
|
layer_id.spatial_layer_id = 0;
|
|
layer_id.temporal_layer_id =
|
|
cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
|
|
if (strncmp(encoder->name, "vp9", 3) == 0) {
|
|
vpx_codec_control(&codec, VP9E_SET_SVC_LAYER_ID, &layer_id);
|
|
}
|
|
flags = layer_flags[frame_cnt % flag_periodicity];
|
|
frame_avail = vpx_img_read(&raw, infile);
|
|
if (frame_avail)
|
|
++rc.layer_input_frames[layer_id.temporal_layer_id];
|
|
vpx_usec_timer_start(&timer);
|
|
if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts, 1, flags,
|
|
VPX_DL_REALTIME)) {
|
|
die_codec(&codec, "Failed to encode frame");
|
|
}
|
|
vpx_usec_timer_mark(&timer);
|
|
cx_time += vpx_usec_timer_elapsed(&timer);
|
|
// Reset KF flag.
|
|
if (layering_mode != 7) {
|
|
layer_flags[0] &= ~VPX_EFLAG_FORCE_KF;
|
|
}
|
|
got_data = 0;
|
|
while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
|
|
got_data = 1;
|
|
switch (pkt->kind) {
|
|
case VPX_CODEC_CX_FRAME_PKT:
|
|
for (i = cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
|
|
i < cfg.ts_number_layers; ++i) {
|
|
vpx_video_writer_write_frame(outfile[i], pkt->data.frame.buf,
|
|
pkt->data.frame.sz, pts);
|
|
++rc.layer_tot_enc_frames[i];
|
|
rc.layer_encoding_bitrate[i] += 8.0 * pkt->data.frame.sz;
|
|
// Keep count of rate control stats per layer (for non-key frames).
|
|
if (i == cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity] &&
|
|
!(pkt->data.frame.flags & VPX_FRAME_IS_KEY)) {
|
|
rc.layer_avg_frame_size[i] += 8.0 * pkt->data.frame.sz;
|
|
rc.layer_avg_rate_mismatch[i] +=
|
|
fabs(8.0 * pkt->data.frame.sz - rc.layer_pfb[i]) /
|
|
rc.layer_pfb[i];
|
|
++rc.layer_enc_frames[i];
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
++frame_cnt;
|
|
pts += frame_duration;
|
|
}
|
|
fclose(infile);
|
|
printout_rate_control_summary(&rc, &cfg, frame_cnt);
|
|
printf("\n");
|
|
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);
|
|
|
|
if (vpx_codec_destroy(&codec))
|
|
die_codec(&codec, "Failed to destroy codec");
|
|
|
|
// Try to rewrite the output file headers with the actual frame count.
|
|
for (i = 0; i < cfg.ts_number_layers; ++i)
|
|
vpx_video_writer_close(outfile[i]);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|