ref: 33afddadb9af6569bd8296ef1d48d0511b651e9d
dir: /vp8_scalable_patterns.c/
/* * Copyright (c) 2012 The WebM project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ /* * This is an example demonstrating how to implement a multi-layer VP8 * encoding scheme based on temporal scalability for video applications * that benefit from a scalable bitstream. */ #include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #define VPX_CODEC_DISABLE_COMPAT 1 #include "vpx/vpx_encoder.h" #include "vpx/vp8cx.h" #define interface (vpx_codec_vp8_cx()) #define fourcc 0x30385056 #define IVF_FILE_HDR_SZ (32) #define IVF_FRAME_HDR_SZ (12) static void mem_put_le16(char *mem, unsigned int val) { mem[0] = val; mem[1] = val>>8; } static void mem_put_le32(char *mem, unsigned int val) { mem[0] = val; mem[1] = val>>8; mem[2] = val>>16; mem[3] = val>>24; } static void die(const char *fmt, ...) { va_list ap; va_start(ap, fmt); vprintf(fmt, ap); if(fmt[strlen(fmt)-1] != '\n') printf("\n"); exit(EXIT_FAILURE); } static void die_codec(vpx_codec_ctx_t *ctx, const char *s) { const char *detail = vpx_codec_error_detail(ctx); printf("%s: %s\n", s, vpx_codec_error(ctx)); if(detail) printf(" %s\n",detail); exit(EXIT_FAILURE); } 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 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); } static int mode_to_num_layers[12] = {1, 2, 2, 3, 3, 3, 3, 5, 2, 3, 3, 3}; int main(int argc, char **argv) { FILE *infile, *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 frame_avail; int got_data; int flags = 0; int i; int pts = 0; /* PTS starts at 0 */ int frame_duration = 1; /* 1 timebase tick per frame */ int layering_mode = 0; int frames_in_layer[VPX_TS_MAX_LAYERS] = {0}; int layer_flags[VPX_TS_MAX_PERIODICITY] = {0}; int flag_periodicity; int max_intra_size_pct; /* Check usage and arguments */ if (argc < 9) die("Usage: %s <infile> <outfile> <width> <height> <rate_num> " " <rate_den> <mode> <Rate_0> ... <Rate_nlayers-1>\n", argv[0]); width = strtol (argv[3], NULL, 0); height = strtol (argv[4], NULL, 0); if (width < 16 || width%2 || height <16 || height%2) die ("Invalid resolution: %d x %d", width, height); if (!sscanf(argv[7], "%d", &layering_mode)) die ("Invalid mode %s", argv[7]); if (layering_mode<0 || layering_mode>11) die ("Invalid mode (0..11) %s", argv[7]); if (argc != 8+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); printf("Using %s\n",vpx_codec_iface_name(interface)); /* Populate encoder configuration */ res = vpx_codec_enc_config_default(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 */ if (!sscanf (argv[5], "%d", &cfg.g_timebase.num )) die ("Invalid timebase numerator %s", argv[5]); if (!sscanf (argv[6], "%d", &cfg.g_timebase.den )) die ("Invalid timebase denominator %s", argv[6]); for (i=8; i<8+mode_to_num_layers[layering_mode]; i++) if (!sscanf(argv[i], "%ud", &cfg.ts_target_bitrate[i-8])) die ("Invalid data rate %s", argv[i]); /* Real time parameters */ cfg.rc_dropframe_thresh = 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 = 100; cfg.rc_overshoot_pct = 15; 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; /* Default setting for bitrate: used in special case of 1 layer (case 0). */ cfg.rc_target_bitrate = cfg.ts_target_bitrate[0]; /* Temporal scaling parameters: */ /* NOTE: The 3 prediction frames cannot be used interchangeably due to * differences in the way they are handled throughout the code. The * frames should be allocated to layers in the order LAST, GF, ARF. * Other combinations work, but may produce slightly inferior results. */ switch (layering_mode) { case 0: { /* 1-layer */ int ids[1] = {0}; cfg.ts_number_layers = 1; cfg.ts_periodicity = 1; cfg.ts_rate_decimator[0] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; // Update L only. layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; break; } case 1: { /* 2-layers, 2-frame period */ int ids[2] = {0,1}; cfg.ts_number_layers = 2; cfg.ts_periodicity = 2; cfg.ts_rate_decimator[0] = 2; cfg.ts_rate_decimator[1] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; #if 1 /* 0=L, 1=GF, Intra-layer prediction enabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_REF_ARF; #else /* 0=L, 1=GF, Intra-layer prediction disabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF; layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST; #endif break; } case 2: { /* 2-layers, 3-frame period */ int ids[3] = {0,1,1}; cfg.ts_number_layers = 2; cfg.ts_periodicity = 3; cfg.ts_rate_decimator[0] = 3; cfg.ts_rate_decimator[1] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; /* 0=L, 1=GF, Intra-layer prediction enabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[1] = layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; break; } case 3: { /* 3-layers, 6-frame period */ int ids[6] = {0,2,2,1,2,2}; cfg.ts_number_layers = 3; cfg.ts_periodicity = 6; cfg.ts_rate_decimator[0] = 6; cfg.ts_rate_decimator[1] = 3; cfg.ts_rate_decimator[2] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; layer_flags[1] = layer_flags[2] = layer_flags[4] = layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST; break; } case 4: { /* 3-layers, 4-frame period */ int ids[4] = {0,2,1,2}; 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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; /* 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST; layer_flags[1] = layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; break; } case 5: { /* 3-layers, 4-frame period */ int ids[4] = {0,2,1,2}; 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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1, * disabled in layer 2 */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; layer_flags[1] = layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; break; } case 6: { /* 3-layers, 4-frame period */ int ids[4] = {0,2,1,2}; 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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; /* 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[2] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; layer_flags[1] = layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; break; } case 7: { /* NOTE: Probably of academic interest only */ /* 5-layers, 16-frame period */ int ids[16] = {0,4,3,4,2,4,3,4,1,4,3,4,2,4,3,4}; cfg.ts_number_layers = 5; cfg.ts_periodicity = 16; cfg.ts_rate_decimator[0] = 16; cfg.ts_rate_decimator[1] = 8; cfg.ts_rate_decimator[2] = 4; cfg.ts_rate_decimator[3] = 2; cfg.ts_rate_decimator[4] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = cfg.ts_periodicity; layer_flags[0] = VPX_EFLAG_FORCE_KF; layer_flags[1] = layer_flags[3] = layer_flags[5] = layer_flags[7] = layer_flags[9] = layer_flags[11] = layer_flags[13] = layer_flags[15] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[2] = layer_flags[6] = layer_flags[10] = layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF; layer_flags[4] = layer_flags[12] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_UPD_ARF; layer_flags[8] = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF; break; } case 8: { /* 2-layers, with sync point at first frame of layer 1. */ int ids[2] = {0,1}; cfg.ts_number_layers = 2; cfg.ts_periodicity = 2; cfg.ts_rate_decimator[0] = 2; cfg.ts_rate_decimator[1] = 1; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = 8; /* 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] = VPX_EFLAG_FORCE_KF | 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 9: { /* 3-layers */ // Sync points for layer 1 and 2 every 8 frames. int ids[4] = {0,2,1,2}; 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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = 8; /* 0=L, 1=GF, 2=ARF */ layer_flags[0] = VPX_EFLAG_FORCE_KF | VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; layer_flags[3] = layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF; layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF; layer_flags[6] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF; layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_ENTROPY; break; } case 10: { // 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. int ids[4] = {0,2,1,2}; 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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = 8; /* 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_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; memcpy(cfg.ts_layer_id, ids, sizeof(ids)); flag_periodicity = 8; /* 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; } } /* 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[512]; sprintf (file_name, "%s_%d.ivf", argv[2], i); if (!(outfile[i] = fopen(file_name, "wb"))) die("Failed to open %s for writing", file_name); write_ivf_file_header(outfile[i], &cfg, 0); } /* Initialize codec */ if (vpx_codec_enc_init (&codec, interface, &cfg, 0)) die_codec (&codec, "Failed to initialize encoder"); /* Cap CPU & first I-frame size */ vpx_codec_control (&codec, VP8E_SET_CPUUSED, -6); vpx_codec_control (&codec, VP8E_SET_STATIC_THRESHOLD, 1); vpx_codec_control (&codec, VP8E_SET_NOISE_SENSITIVITY, 1); vpx_codec_control(&codec, VP8E_SET_TOKEN_PARTITIONS, 1); max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5) * ((double) cfg.g_timebase.den / cfg.g_timebase.num) / 10.0); /* printf ("max_intra_size_pct=%d\n", max_intra_size_pct); */ vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT, max_intra_size_pct); frame_avail = 1; while (frame_avail || got_data) { vpx_codec_iter_t iter = NULL; const vpx_codec_cx_pkt_t *pkt; flags = layer_flags[frame_cnt % flag_periodicity]; frame_avail = read_frame(infile, &raw); if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts, 1, flags, VPX_DL_REALTIME)) die_codec(&codec, "Failed to encode frame"); /* 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++) { write_ivf_frame_header(outfile[i], pkt); (void) fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz, outfile[i]); frames_in_layer[i]++; } break; default: break; } } frame_cnt++; pts += frame_duration; } fclose (infile); printf ("Processed %d frames.\n",frame_cnt-1); 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++) { if (!fseek(outfile[i], 0, SEEK_SET)) write_ivf_file_header (outfile[i], &cfg, frames_in_layer[i]); fclose (outfile[i]); } return EXIT_SUCCESS; }