/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ /* * This is an example demonstrating multi-resolution encoding in VP8. * High-resolution input video is down-sampled to lower-resolutions. The * encoder then encodes the video and outputs multiple bitstreams with * different resolutions. * * This test also allows for settings temporal layers for each spatial layer. * Different number of temporal layers per spatial stream may be used. * Currently up to 3 temporal layers per spatial stream (encoder) are supported * in this test. */ #include "./vpx_config.h" #include <stdio.h>#include <stdlib.h>#include <stdarg.h>#include <string.h>#include <math.h>#include <assert.h>#include <sys/time.h>#if USE_POSIX_MMAP#include <sys/types.h>#include <sys/stat.h>#include <sys/mman.h>#include <fcntl.h>#include <unistd.h>#endif#include "vpx_ports/vpx_timer.h"#define VPX_CODEC_DISABLE_COMPAT 1#include "vpx/vpx_encoder.h"#include "vpx/vp8cx.h"#include "vpx_ports/mem_ops.h"#include "./tools_common.h"#define interface (vpx_codec_vp8_cx())#define fourcc 0x30385056 void usage_exit() { exit(EXIT_FAILURE);} /* * The input video frame is downsampled several times to generate a multi-level * hierarchical structure. NUM_ENCODERS is defined as the number of encoding * levels required. For example, if the size of input video is 1280x720, * NUM_ENCODERS is 3, and down-sampling factor is 2, the encoder outputs 3 * bitstreams with resolution of 1280x720(level 0), 640x360(level 1), and * 320x180(level 2) respectively. */ /* Number of encoders (spatial resolutions) used in this test. */#define NUM_ENCODERS 3 /* Maximum number of temporal layers allowed for this test. */#define MAX_NUM_TEMPORAL_LAYERS 3 /* This example uses the scaler function in libyuv. */#include "third_party/libyuv/include/libyuv/basic_types.h"#include "third_party/libyuv/include/libyuv/scale.h"#include "third_party/libyuv/include/libyuv/cpu_id.h" int (*read_frame_p)(FILE *f, vpx_image_t *img); static int read_frame(FILE *f, vpx_image_t *img) { size_t nbytes, to_read; int res = 1; to_read = img->w*img->h*3/2; nbytes = fread(img->planes[0], 1, to_read, f); if(nbytes != to_read) { res = 0; if(nbytes > 0) printf("Warning: Read partial frame. Check your width & height!\n"); } return res;} static int read_frame_by_row(FILE *f, vpx_image_t *img) { size_t nbytes, to_read; int res = 1; int plane; for (plane = 0; plane < 3; plane++) { unsigned char *ptr; int w = (plane ? (1 + img->d_w) / 2 : img->d_w); int h = (plane ? (1 + img->d_h) / 2 : img->d_h); int r; /* Determine the correct plane based on the image format. The for-loop * always counts in Y,U,V order, but this may not match the order of * the data on disk. */ switch (plane) { case 1: ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12? VPX_PLANE_V : VPX_PLANE_U]; break; case 2: ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12?VPX_PLANE_U : VPX_PLANE_V]; break; default: ptr = img->planes[plane]; } for (r = 0; r < h; r++) { to_read = w; nbytes = fread(ptr, 1, to_read, f); if(nbytes != to_read) { res = 0; if(nbytes > 0) printf("Warning: Read partial frame. Check your width & height!\n"); break; } ptr += img->stride[plane]; } if (!res) break; } return res;} static void write_ivf_file_header(FILE *outfile, const vpx_codec_enc_cfg_t *cfg, int frame_cnt) { char header[32]; if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS) return; header[0] = 'D'; header[1] = 'K'; header[2] = 'I'; header[3] = 'F'; mem_put_le16(header+4, 0); /* version */ mem_put_le16(header+6, 32); /* headersize */ mem_put_le32(header+8, fourcc); /* headersize */ mem_put_le16(header+12, cfg->g_w); /* width */ mem_put_le16(header+14, cfg->g_h); /* height */ mem_put_le32(header+16, cfg->g_timebase.den); /* rate */ mem_put_le32(header+20, cfg->g_timebase.num); /* scale */ mem_put_le32(header+24, frame_cnt); /* length */ mem_put_le32(header+28, 0); /* unused */ (void) fwrite(header, 1, 32, outfile);} static void write_ivf_frame_header(FILE *outfile, const vpx_codec_cx_pkt_t *pkt){ char header[12]; vpx_codec_pts_t pts; if(pkt->kind != VPX_CODEC_CX_FRAME_PKT) return; pts = pkt->data.frame.pts; mem_put_le32(header, pkt->data.frame.sz); mem_put_le32(header+4, pts&0xFFFFFFFF); mem_put_le32(header+8, pts >> 32); (void) fwrite(header, 1, 12, outfile);} /* Temporal scaling parameters *//* This sets all the temporal layer parameters given |num_temporal_layers|, * including the target bit allocation across temporal layers. Bit allocation * parameters will be passed in as user parameters in another version. */static void set_temporal_layer_pattern(int num_temporal_layers, vpx_codec_enc_cfg_t *cfg, int bitrate, int *layer_flags){ assert(num_temporal_layers <= MAX_NUM_TEMPORAL_LAYERS); switch (num_temporal_layers) { case 1: { /* 1-layer */ cfg->ts_number_layers = 1; cfg->ts_periodicity = 1; cfg->ts_rate_decimator[0] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_target_bitrate[0] = bitrate; // Update L only. layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; break; } case 2: { /* 2-layers, with sync point at first frame of layer 1. */ cfg->ts_number_layers = 2; cfg->ts_periodicity = 2; cfg->ts_rate_decimator[0] = 2; cfg->ts_rate_decimator[1] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_layer_id[1] = 1; // Use 60/40 bit allocation as example. cfg->ts_target_bitrate[0] = 0.6f * bitrate; cfg->ts_target_bitrate[1] = bitrate; /* 0=L, 1=GF */ // ARF is used as predictor for all frames, and is only updated on // key frame. Sync point every 8 frames. // Layer 0: predict from L and ARF, update L and G. layer_flags[0] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF; // Layer 1: sync point: predict from L and ARF, and update G. layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; // Layer 0, predict from L and ARF, update L. layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; // Layer 1: predict from L, G and ARF, and update G. layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY; // Layer 0 layer_flags[4] = layer_flags[2]; // Layer 1 layer_flags[5] = layer_flags[3]; // Layer 0 layer_flags[6] = layer_flags[4]; // Layer 1 layer_flags[7] = layer_flags[5]; break; } case 3: default: { // 3-layers structure where ARF is used as predictor for all frames, // and is only updated on key frame. // Sync points for layer 1 and 2 every 8 frames. cfg->ts_number_layers = 3; cfg->ts_periodicity = 4; cfg->ts_rate_decimator[0] = 4; cfg->ts_rate_decimator[1] = 2; cfg->ts_rate_decimator[2] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_layer_id[1] = 2; cfg->ts_layer_id[2] = 1; cfg->ts_layer_id[3] = 2; // Use 40/20/40 bit allocation as example. cfg->ts_target_bitrate[0] = 0.4f * bitrate; cfg->ts_target_bitrate[1] = 0.6f * bitrate; cfg->ts_target_bitrate[2] = bitrate; /* 0=L, 1=GF, 2=ARF */ // Layer 0: predict from L and ARF; update L and G. layer_flags[0] = 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; } }} /* The periodicity of the pattern given the number of temporal layers. */static int periodicity_to_num_layers[MAX_NUM_TEMPORAL_LAYERS] = {1, 8, 8}; int main(int argc, char **argv){ FILE *infile, *outfile[NUM_ENCODERS]; FILE *downsampled_input[NUM_ENCODERS - 1]; char filename[50]; vpx_codec_ctx_t codec[NUM_ENCODERS]; vpx_codec_enc_cfg_t cfg[NUM_ENCODERS]; int frame_cnt = 0; vpx_image_t raw[NUM_ENCODERS]; vpx_codec_err_t res[NUM_ENCODERS]; int i; long width; long height; int length_frame; int frame_avail; int got_data; int flags = 0; int layer_id = 0; int layer_flags[VPX_TS_MAX_PERIODICITY * NUM_ENCODERS] = {0}; int flag_periodicity; /*Currently, only realtime mode is supported in multi-resolution encoding.*/ int arg_deadline = VPX_DL_REALTIME; /* Set show_psnr to 1/0 to show/not show PSNR. Choose show_psnr=0 if you don't need to know PSNR, which will skip PSNR calculation and save encoding time. */ int show_psnr = 0; int key_frame_insert = 0; uint64_t psnr_sse_total[NUM_ENCODERS] = {0}; uint64_t psnr_samples_total[NUM_ENCODERS] = {0}; double psnr_totals[NUM_ENCODERS][4] = {{0,0}}; int psnr_count[NUM_ENCODERS] = {0}; double cx_time = 0; struct timeval tv1, tv2, difftv; /* Set the required target bitrates for each resolution level. * If target bitrate for highest-resolution level is set to 0, * (i.e. target_bitrate[0]=0), we skip encoding at that level. */ unsigned int target_bitrate[NUM_ENCODERS]={1000, 500, 100}; /* Enter the frame rate of the input video */ int framerate = 30; /* Set down-sampling factor for each resolution level. dsf[0] controls down sampling from level 0 to level 1; dsf[1] controls down sampling from level 1 to level 2; dsf[2] is not used. */ vpx_rational_t dsf[NUM_ENCODERS] = {{2, 1}, {2, 1}, {1, 1}}; /* Set the number of temporal layers for each encoder/resolution level, * starting from highest resoln down to lowest resoln. */ unsigned int num_temporal_layers[NUM_ENCODERS] = {3, 3, 3}; if(argc!= (7 + 3 * NUM_ENCODERS)) die("Usage: %s <width> <height> <frame_rate> <infile> <outfile(s)> " "<rate_encoder(s)> <temporal_layer(s)> <key_frame_insert> <output psnr?> \n", argv[0]); printf("Using %s\n",vpx_codec_iface_name(interface)); width = strtol(argv[1], NULL, 0); height = strtol(argv[2], NULL, 0); framerate = strtol(argv[3], NULL, 0); if(width < 16 || width%2 || height <16 || height%2) die("Invalid resolution: %ldx%ld", width, height); /* Open input video file for encoding */ if(!(infile = fopen(argv[4], "rb"))) die("Failed to open %s for reading", argv[4]); /* Open output file for each encoder to output bitstreams */ for (i=0; i< NUM_ENCODERS; i++) { if(!target_bitrate[i]) { outfile[i] = NULL; continue; } if(!(outfile[i] = fopen(argv[i+5], "wb"))) die("Failed to open %s for writing", argv[i+4]); } // Bitrates per spatial layer: overwrite default rates above. for (i=0; i< NUM_ENCODERS; i++) { target_bitrate[i] = strtol(argv[NUM_ENCODERS + 5 + i], NULL, 0); } // Temporal layers per spatial layers: overwrite default settings above. for (i=0; i< NUM_ENCODERS; i++) { num_temporal_layers[i] = strtol(argv[2 * NUM_ENCODERS + 5 + i], NULL, 0); if (num_temporal_layers[i] < 1 || num_temporal_layers[i] > 3) die("Invalid temporal layers: %d, Must be 1, 2, or 3. \n", num_temporal_layers); } /* Open file to write out each spatially downsampled input stream. */ for (i=0; i< NUM_ENCODERS - 1; i++) { // Highest resoln is encoder 0. if (sprintf(filename,"ds%d.yuv",NUM_ENCODERS - i) < 0) { return EXIT_FAILURE; } downsampled_input[i] = fopen(filename,"wb"); } key_frame_insert = strtol(argv[3 * NUM_ENCODERS + 5], NULL, 0); show_psnr = strtol(argv[3 * NUM_ENCODERS + 6], NULL, 0); /* Populate default encoder configuration */ for (i=0; i< NUM_ENCODERS; i++) { res[i] = vpx_codec_enc_config_default(interface, &cfg[i], 0); if(res[i]) { printf("Failed to get config: %s\n", vpx_codec_err_to_string(res[i])); return EXIT_FAILURE; } } /* * Update the default configuration according to needs of the application. */ /* Highest-resolution encoder settings */ cfg[0].g_w = width; cfg[0].g_h = height; cfg[0].rc_dropframe_thresh = 0; cfg[0].rc_end_usage = VPX_CBR; cfg[0].rc_resize_allowed = 0; cfg[0].rc_min_quantizer = 2; cfg[0].rc_max_quantizer = 56; cfg[0].rc_undershoot_pct = 100; cfg[0].rc_overshoot_pct = 15; cfg[0].rc_buf_initial_sz = 500; cfg[0].rc_buf_optimal_sz = 600; cfg[0].rc_buf_sz = 1000; cfg[0].g_error_resilient = 1; /* Enable error resilient mode */ cfg[0].g_lag_in_frames = 0; /* Disable automatic keyframe placement */ /* Note: These 3 settings are copied to all levels. But, except the lowest * resolution level, all other levels are set to VPX_KF_DISABLED internally. */ cfg[0].kf_mode = VPX_KF_AUTO; cfg[0].kf_min_dist = 3000; cfg[0].kf_max_dist = 3000; cfg[0].rc_target_bitrate = target_bitrate[0]; /* Set target bitrate */ cfg[0].g_timebase.num = 1; /* Set fps */ cfg[0].g_timebase.den = framerate; /* Other-resolution encoder settings */ for (i=1; i< NUM_ENCODERS; i++) { memcpy(&cfg[i], &cfg[0], sizeof(vpx_codec_enc_cfg_t)); cfg[i].rc_target_bitrate = target_bitrate[i]; /* Note: Width & height of other-resolution encoders are calculated * from the highest-resolution encoder's size and the corresponding * down_sampling_factor. */ { unsigned int iw = cfg[i-1].g_w*dsf[i-1].den + dsf[i-1].num - 1; unsigned int ih = cfg[i-1].g_h*dsf[i-1].den + dsf[i-1].num - 1; cfg[i].g_w = iw/dsf[i-1].num; cfg[i].g_h = ih/dsf[i-1].num; } Lines 1–500 of 737. Load more
/* * Copyright (c) 2010 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ /* * This is an example demonstrating multi-resolution encoding in VP8. * High-resolution input video is down-sampled to lower-resolutions. The * encoder then encodes the video and outputs multiple bitstreams with * different resolutions. * * This test also allows for settings temporal layers for each spatial layer. * Different number of temporal layers per spatial stream may be used. * Currently up to 3 temporal layers per spatial stream (encoder) are supported * in this test. */ #include "./vpx_config.h" #include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #include <math.h> #include <assert.h> #include <sys/time.h> #if USE_POSIX_MMAP #include <sys/types.h> #include <sys/stat.h> #include <sys/mman.h> #include <fcntl.h> #include <unistd.h> #endif #include "vpx_ports/vpx_timer.h" #define VPX_CODEC_DISABLE_COMPAT 1 #include "vpx/vpx_encoder.h" #include "vpx/vp8cx.h" #include "vpx_ports/mem_ops.h" #include "./tools_common.h" #define interface (vpx_codec_vp8_cx()) #define fourcc 0x30385056 void usage_exit() { exit(EXIT_FAILURE); } /* * The input video frame is downsampled several times to generate a multi-level * hierarchical structure. NUM_ENCODERS is defined as the number of encoding * levels required. For example, if the size of input video is 1280x720, * NUM_ENCODERS is 3, and down-sampling factor is 2, the encoder outputs 3 * bitstreams with resolution of 1280x720(level 0), 640x360(level 1), and * 320x180(level 2) respectively. */ /* Number of encoders (spatial resolutions) used in this test. */ #define NUM_ENCODERS 3 /* Maximum number of temporal layers allowed for this test. */ #define MAX_NUM_TEMPORAL_LAYERS 3 /* This example uses the scaler function in libyuv. */ #include "third_party/libyuv/include/libyuv/basic_types.h" #include "third_party/libyuv/include/libyuv/scale.h" #include "third_party/libyuv/include/libyuv/cpu_id.h" int (*read_frame_p)(FILE *f, vpx_image_t *img); static int read_frame(FILE *f, vpx_image_t *img) { size_t nbytes, to_read; int res = 1; to_read = img->w*img->h*3/2; nbytes = fread(img->planes[0], 1, to_read, f); if(nbytes != to_read) { res = 0; if(nbytes > 0) printf("Warning: Read partial frame. Check your width & height!\n"); } return res; } static int read_frame_by_row(FILE *f, vpx_image_t *img) { size_t nbytes, to_read; int res = 1; int plane; for (plane = 0; plane < 3; plane++) { unsigned char *ptr; int w = (plane ? (1 + img->d_w) / 2 : img->d_w); int h = (plane ? (1 + img->d_h) / 2 : img->d_h); int r; /* Determine the correct plane based on the image format. The for-loop * always counts in Y,U,V order, but this may not match the order of * the data on disk. */ switch (plane) { case 1: ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12? VPX_PLANE_V : VPX_PLANE_U]; break; case 2: ptr = img->planes[img->fmt==VPX_IMG_FMT_YV12?VPX_PLANE_U : VPX_PLANE_V]; break; default: ptr = img->planes[plane]; } for (r = 0; r < h; r++) { to_read = w; nbytes = fread(ptr, 1, to_read, f); if(nbytes != to_read) { res = 0; if(nbytes > 0) printf("Warning: Read partial frame. Check your width & height!\n"); break; } ptr += img->stride[plane]; } if (!res) break; } return res; } static void write_ivf_file_header(FILE *outfile, const vpx_codec_enc_cfg_t *cfg, int frame_cnt) { char header[32]; if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS) return; header[0] = 'D'; header[1] = 'K'; header[2] = 'I'; header[3] = 'F'; mem_put_le16(header+4, 0); /* version */ mem_put_le16(header+6, 32); /* headersize */ mem_put_le32(header+8, fourcc); /* headersize */ mem_put_le16(header+12, cfg->g_w); /* width */ mem_put_le16(header+14, cfg->g_h); /* height */ mem_put_le32(header+16, cfg->g_timebase.den); /* rate */ mem_put_le32(header+20, cfg->g_timebase.num); /* scale */ mem_put_le32(header+24, frame_cnt); /* length */ mem_put_le32(header+28, 0); /* unused */ (void) fwrite(header, 1, 32, outfile); } static void write_ivf_frame_header(FILE *outfile, const vpx_codec_cx_pkt_t *pkt) { char header[12]; vpx_codec_pts_t pts; if(pkt->kind != VPX_CODEC_CX_FRAME_PKT) return; pts = pkt->data.frame.pts; mem_put_le32(header, pkt->data.frame.sz); mem_put_le32(header+4, pts&0xFFFFFFFF); mem_put_le32(header+8, pts >> 32); (void) fwrite(header, 1, 12, outfile); } /* Temporal scaling parameters */ /* This sets all the temporal layer parameters given |num_temporal_layers|, * including the target bit allocation across temporal layers. Bit allocation * parameters will be passed in as user parameters in another version. */ static void set_temporal_layer_pattern(int num_temporal_layers, vpx_codec_enc_cfg_t *cfg, int bitrate, int *layer_flags) { assert(num_temporal_layers <= MAX_NUM_TEMPORAL_LAYERS); switch (num_temporal_layers) { case 1: { /* 1-layer */ cfg->ts_number_layers = 1; cfg->ts_periodicity = 1; cfg->ts_rate_decimator[0] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_target_bitrate[0] = bitrate; // Update L only. layer_flags[0] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; break; } case 2: { /* 2-layers, with sync point at first frame of layer 1. */ cfg->ts_number_layers = 2; cfg->ts_periodicity = 2; cfg->ts_rate_decimator[0] = 2; cfg->ts_rate_decimator[1] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_layer_id[1] = 1; // Use 60/40 bit allocation as example. cfg->ts_target_bitrate[0] = 0.6f * bitrate; cfg->ts_target_bitrate[1] = bitrate; /* 0=L, 1=GF */ // ARF is used as predictor for all frames, and is only updated on // key frame. Sync point every 8 frames. // Layer 0: predict from L and ARF, update L and G. layer_flags[0] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_ARF; // Layer 1: sync point: predict from L and ARF, and update G. layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; // Layer 0, predict from L and ARF, update L. layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; // Layer 1: predict from L, G and ARF, and update G. layer_flags[3] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ENTROPY; // Layer 0 layer_flags[4] = layer_flags[2]; // Layer 1 layer_flags[5] = layer_flags[3]; // Layer 0 layer_flags[6] = layer_flags[4]; // Layer 1 layer_flags[7] = layer_flags[5]; break; } case 3: default: { // 3-layers structure where ARF is used as predictor for all frames, // and is only updated on key frame. // Sync points for layer 1 and 2 every 8 frames. cfg->ts_number_layers = 3; cfg->ts_periodicity = 4; cfg->ts_rate_decimator[0] = 4; cfg->ts_rate_decimator[1] = 2; cfg->ts_rate_decimator[2] = 1; cfg->ts_layer_id[0] = 0; cfg->ts_layer_id[1] = 2; cfg->ts_layer_id[2] = 1; cfg->ts_layer_id[3] = 2; // Use 40/20/40 bit allocation as example. cfg->ts_target_bitrate[0] = 0.4f * bitrate; cfg->ts_target_bitrate[1] = 0.6f * bitrate; cfg->ts_target_bitrate[2] = bitrate; /* 0=L, 1=GF, 2=ARF */ // Layer 0: predict from L and ARF; update L and G. layer_flags[0] = 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; } } } /* The periodicity of the pattern given the number of temporal layers. */ static int periodicity_to_num_layers[MAX_NUM_TEMPORAL_LAYERS] = {1, 8, 8}; int main(int argc, char **argv) { FILE *infile, *outfile[NUM_ENCODERS]; FILE *downsampled_input[NUM_ENCODERS - 1]; char filename[50]; vpx_codec_ctx_t codec[NUM_ENCODERS]; vpx_codec_enc_cfg_t cfg[NUM_ENCODERS]; int frame_cnt = 0; vpx_image_t raw[NUM_ENCODERS]; vpx_codec_err_t res[NUM_ENCODERS]; int i; long width; long height; int length_frame; int frame_avail; int got_data; int flags = 0; int layer_id = 0; int layer_flags[VPX_TS_MAX_PERIODICITY * NUM_ENCODERS] = {0}; int flag_periodicity; /*Currently, only realtime mode is supported in multi-resolution encoding.*/ int arg_deadline = VPX_DL_REALTIME; /* Set show_psnr to 1/0 to show/not show PSNR. Choose show_psnr=0 if you don't need to know PSNR, which will skip PSNR calculation and save encoding time. */ int show_psnr = 0; int key_frame_insert = 0; uint64_t psnr_sse_total[NUM_ENCODERS] = {0}; uint64_t psnr_samples_total[NUM_ENCODERS] = {0}; double psnr_totals[NUM_ENCODERS][4] = {{0,0}}; int psnr_count[NUM_ENCODERS] = {0}; double cx_time = 0; struct timeval tv1, tv2, difftv; /* Set the required target bitrates for each resolution level. * If target bitrate for highest-resolution level is set to 0, * (i.e. target_bitrate[0]=0), we skip encoding at that level. */ unsigned int target_bitrate[NUM_ENCODERS]={1000, 500, 100}; /* Enter the frame rate of the input video */ int framerate = 30; /* Set down-sampling factor for each resolution level. dsf[0] controls down sampling from level 0 to level 1; dsf[1] controls down sampling from level 1 to level 2; dsf[2] is not used. */ vpx_rational_t dsf[NUM_ENCODERS] = {{2, 1}, {2, 1}, {1, 1}}; /* Set the number of temporal layers for each encoder/resolution level, * starting from highest resoln down to lowest resoln. */ unsigned int num_temporal_layers[NUM_ENCODERS] = {3, 3, 3}; if(argc!= (7 + 3 * NUM_ENCODERS)) die("Usage: %s <width> <height> <frame_rate> <infile> <outfile(s)> " "<rate_encoder(s)> <temporal_layer(s)> <key_frame_insert> <output psnr?> \n", argv[0]); printf("Using %s\n",vpx_codec_iface_name(interface)); width = strtol(argv[1], NULL, 0); height = strtol(argv[2], NULL, 0); framerate = strtol(argv[3], NULL, 0); if(width < 16 || width%2 || height <16 || height%2) die("Invalid resolution: %ldx%ld", width, height); /* Open input video file for encoding */ if(!(infile = fopen(argv[4], "rb"))) die("Failed to open %s for reading", argv[4]); /* Open output file for each encoder to output bitstreams */ for (i=0; i< NUM_ENCODERS; i++) { if(!target_bitrate[i]) { outfile[i] = NULL; continue; } if(!(outfile[i] = fopen(argv[i+5], "wb"))) die("Failed to open %s for writing", argv[i+4]); } // Bitrates per spatial layer: overwrite default rates above. for (i=0; i< NUM_ENCODERS; i++) { target_bitrate[i] = strtol(argv[NUM_ENCODERS + 5 + i], NULL, 0); } // Temporal layers per spatial layers: overwrite default settings above. for (i=0; i< NUM_ENCODERS; i++) { num_temporal_layers[i] = strtol(argv[2 * NUM_ENCODERS + 5 + i], NULL, 0); if (num_temporal_layers[i] < 1 || num_temporal_layers[i] > 3) die("Invalid temporal layers: %d, Must be 1, 2, or 3. \n", num_temporal_layers); } /* Open file to write out each spatially downsampled input stream. */ for (i=0; i< NUM_ENCODERS - 1; i++) { // Highest resoln is encoder 0. if (sprintf(filename,"ds%d.yuv",NUM_ENCODERS - i) < 0) { return EXIT_FAILURE; } downsampled_input[i] = fopen(filename,"wb"); } key_frame_insert = strtol(argv[3 * NUM_ENCODERS + 5], NULL, 0); show_psnr = strtol(argv[3 * NUM_ENCODERS + 6], NULL, 0); /* Populate default encoder configuration */ for (i=0; i< NUM_ENCODERS; i++) { res[i] = vpx_codec_enc_config_default(interface, &cfg[i], 0); if(res[i]) { printf("Failed to get config: %s\n", vpx_codec_err_to_string(res[i])); return EXIT_FAILURE; } } /* * Update the default configuration according to needs of the application. */ /* Highest-resolution encoder settings */ cfg[0].g_w = width; cfg[0].g_h = height; cfg[0].rc_dropframe_thresh = 0; cfg[0].rc_end_usage = VPX_CBR; cfg[0].rc_resize_allowed = 0; cfg[0].rc_min_quantizer = 2; cfg[0].rc_max_quantizer = 56; cfg[0].rc_undershoot_pct = 100; cfg[0].rc_overshoot_pct = 15; cfg[0].rc_buf_initial_sz = 500; cfg[0].rc_buf_optimal_sz = 600; cfg[0].rc_buf_sz = 1000; cfg[0].g_error_resilient = 1; /* Enable error resilient mode */ cfg[0].g_lag_in_frames = 0; /* Disable automatic keyframe placement */ /* Note: These 3 settings are copied to all levels. But, except the lowest * resolution level, all other levels are set to VPX_KF_DISABLED internally. */ cfg[0].kf_mode = VPX_KF_AUTO; cfg[0].kf_min_dist = 3000; cfg[0].kf_max_dist = 3000; cfg[0].rc_target_bitrate = target_bitrate[0]; /* Set target bitrate */ cfg[0].g_timebase.num = 1; /* Set fps */ cfg[0].g_timebase.den = framerate; /* Other-resolution encoder settings */ for (i=1; i< NUM_ENCODERS; i++) { memcpy(&cfg[i], &cfg[0], sizeof(vpx_codec_enc_cfg_t)); cfg[i].rc_target_bitrate = target_bitrate[i]; /* Note: Width & height of other-resolution encoders are calculated * from the highest-resolution encoder's size and the corresponding * down_sampling_factor. */ { unsigned int iw = cfg[i-1].g_w*dsf[i-1].den + dsf[i-1].num - 1; unsigned int ih = cfg[i-1].g_h*dsf[i-1].den + dsf[i-1].num - 1; cfg[i].g_w = iw/dsf[i-1].num; cfg[i].g_h = ih/dsf[i-1].num; }