vp8_scalable_patterns

00001 /*
00002  *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
00003  *
00004  *  Use of this source code is governed by a BSD-style license
00005  *  that can be found in the LICENSE file in the root of the source
00006  *  tree. An additional intellectual property rights grant can be found
00007  *  in the file PATENTS.  All contributing project authors may
00008  *  be found in the AUTHORS file in the root of the source tree.
00009  */
00010 
00011 
00012 /*
00013  * This is an example demonstrating how to implement a multi-layer VP8
00014  * encoding scheme based on temporal scalability for video applications
00015  * that benefit from a scalable bitstream.
00016  */
00017 #include <stdio.h>
00018 #include <stdlib.h>
00019 #include <stdarg.h>
00020 #include <string.h>
00021 #define VPX_CODEC_DISABLE_COMPAT 1
00022 #include "vpx/vpx_encoder.h"
00023 #include "vpx/vp8cx.h"
00024 #define interface (vpx_codec_vp8_cx())
00025 #define fourcc    0x30385056
00026 
00027 #define IVF_FILE_HDR_SZ  (32)
00028 #define IVF_FRAME_HDR_SZ (12)
00029 
00030 static void mem_put_le16(char *mem, unsigned int val) {
00031     mem[0] = val;
00032     mem[1] = val>>8;
00033 }
00034 
00035 static void mem_put_le32(char *mem, unsigned int val) {
00036     mem[0] = val;
00037     mem[1] = val>>8;
00038     mem[2] = val>>16;
00039     mem[3] = val>>24;
00040 }
00041 
00042 static void die(const char *fmt, ...) {
00043     va_list ap;
00044 
00045     va_start(ap, fmt);
00046     vprintf(fmt, ap);
00047     if(fmt[strlen(fmt)-1] != '\n')
00048         printf("\n");
00049     exit(EXIT_FAILURE);
00050 }
00051 
00052 static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
00053     const char *detail = vpx_codec_error_detail(ctx);
00054 
00055     printf("%s: %s\n", s, vpx_codec_error(ctx));
00056     if(detail)
00057         printf("    %s\n",detail);
00058     exit(EXIT_FAILURE);
00059 }
00060 
00061 static int read_frame(FILE *f, vpx_image_t *img) {
00062     size_t nbytes, to_read;
00063     int    res = 1;
00064 
00065     to_read = img->w*img->h*3/2;
00066     nbytes = fread(img->planes[0], 1, to_read, f);
00067     if(nbytes != to_read) {
00068         res = 0;
00069         if(nbytes > 0)
00070             printf("Warning: Read partial frame. Check your width & height!\n");
00071     }
00072     return res;
00073 }
00074 
00075 static void write_ivf_file_header(FILE *outfile,
00076                                   const vpx_codec_enc_cfg_t *cfg,
00077                                   int frame_cnt) {
00078     char header[32];
00079 
00080     if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
00081         return;
00082     header[0] = 'D';
00083     header[1] = 'K';
00084     header[2] = 'I';
00085     header[3] = 'F';
00086     mem_put_le16(header+4,  0);                   /* version */
00087     mem_put_le16(header+6,  32);                  /* headersize */
00088     mem_put_le32(header+8,  fourcc);              /* headersize */
00089     mem_put_le16(header+12, cfg->g_w);            /* width */
00090     mem_put_le16(header+14, cfg->g_h);            /* height */
00091     mem_put_le32(header+16, cfg->g_timebase.den); /* rate */
00092     mem_put_le32(header+20, cfg->g_timebase.num); /* scale */
00093     mem_put_le32(header+24, frame_cnt);           /* length */
00094     mem_put_le32(header+28, 0);                   /* unused */
00095 
00096     if(fwrite(header, 1, 32, outfile));
00097 }
00098 
00099 
00100 static void write_ivf_frame_header(FILE *outfile,
00101                                    const vpx_codec_cx_pkt_t *pkt)
00102 {
00103     char             header[12];
00104     vpx_codec_pts_t  pts;
00105 
00106     if(pkt->kind != VPX_CODEC_CX_FRAME_PKT)
00107         return;
00108 
00109     pts = pkt->data.frame.pts;
00110     mem_put_le32(header, pkt->data.frame.sz);
00111     mem_put_le32(header+4, pts&0xFFFFFFFF);
00112     mem_put_le32(header+8, pts >> 32);
00113 
00114     if(fwrite(header, 1, 12, outfile));
00115 }
00116 
00117 static int mode_to_num_layers[9] = {2, 2, 3, 3, 3, 3, 5, 2, 3};
00118 
00119 int main(int argc, char **argv) {
00120     FILE                *infile, *outfile[VPX_TS_MAX_LAYERS];
00121     vpx_codec_ctx_t      codec;
00122     vpx_codec_enc_cfg_t  cfg;
00123     int                  frame_cnt = 0;
00124     vpx_image_t          raw;
00125     vpx_codec_err_t      res;
00126     unsigned int         width;
00127     unsigned int         height;
00128     int                  frame_avail;
00129     int                  got_data;
00130     int                  flags = 0;
00131     int                  i;
00132     int                  pts = 0;              // PTS starts at 0
00133     int                  frame_duration = 1;   // 1 timebase tick per frame
00134 
00135     int                  layering_mode = 0;
00136     int                  frames_in_layer[VPX_TS_MAX_LAYERS] = {0};
00137     int                  layer_flags[VPX_TS_MAX_PERIODICITY] = {0};
00138     int                  flag_periodicity;
00139     int                  max_intra_size_pct;
00140 
00141     // Check usage and arguments
00142     if (argc < 9)
00143         die("Usage: %s <infile> <outfile> <width> <height> <rate_num> "
00144             " <rate_den> <mode> <Rate_0> ... <Rate_nlayers-1>\n", argv[0]);
00145 
00146     width  = strtol (argv[3], NULL, 0);
00147     height = strtol (argv[4], NULL, 0);
00148     if (width < 16 || width%2 || height <16 || height%2)
00149         die ("Invalid resolution: %d x %d", width, height);
00150 
00151     if (!sscanf(argv[7], "%d", &layering_mode))
00152         die ("Invalid mode %s", argv[7]);
00153     if (layering_mode<0 || layering_mode>8)
00154         die ("Invalid mode (0..8) %s", argv[7]);
00155 
00156     if (argc != 8+mode_to_num_layers[layering_mode])
00157         die ("Invalid number of arguments");
00158 
00159     if (!vpx_img_alloc (&raw, VPX_IMG_FMT_I420, width, height, 1))
00160         die ("Failed to allocate image", width, height);
00161 
00162     printf("Using %s\n",vpx_codec_iface_name(interface));
00163 
00164     // Populate encoder configuration
00165     res = vpx_codec_enc_config_default(interface, &cfg, 0);
00166     if(res) {
00167         printf("Failed to get config: %s\n", vpx_codec_err_to_string(res));
00168         return EXIT_FAILURE;
00169     }
00170 
00171     // Update the default configuration with our settings
00172     cfg.g_w = width;
00173     cfg.g_h = height;
00174 
00175     // Timebase format e.g. 30fps: numerator=1, demoninator=30
00176     if (!sscanf (argv[5], "%d", &cfg.g_timebase.num ))
00177         die ("Invalid timebase numerator %s", argv[5]);
00178     if (!sscanf (argv[6], "%d", &cfg.g_timebase.den ))
00179         die ("Invalid timebase denominator %s", argv[6]);
00180 
00181     for (i=8; i<8+mode_to_num_layers[layering_mode]; i++)
00182         if (!sscanf(argv[i], "%d", &cfg.ts_target_bitrate[i-8]))
00183             die ("Invalid data rate %s", argv[i]);
00184 
00185     // Real time parameters
00186     cfg.rc_dropframe_thresh = 0;  // 30
00187     cfg.rc_end_usage        = VPX_CBR;
00188     cfg.rc_resize_allowed   = 0;
00189     cfg.rc_min_quantizer    = 8;
00190     cfg.rc_max_quantizer    = 56;
00191     cfg.rc_undershoot_pct   = 100;
00192     cfg.rc_overshoot_pct    = 15;
00193     cfg.rc_buf_initial_sz   = 500;
00194     cfg.rc_buf_optimal_sz   = 600;
00195     cfg.rc_buf_sz           = 1000;
00196 
00197     // Enable error resilient mode
00198     cfg.g_error_resilient = 1;
00199     cfg.g_lag_in_frames   = 0;
00200     cfg.kf_mode           = VPX_KF_DISABLED;
00201 
00202     // Disable automatic keyframe placement
00203     cfg.kf_min_dist = cfg.kf_max_dist = 1000;
00204 
00205     // Temporal scaling parameters:
00206     // NOTE: The 3 prediction frames cannot be used interchangeably due to
00207     // differences in the way they are handled throughout the code. The
00208     // frames should be allocated to layers in the order LAST, GF, ARF.
00209     // Other combinations work, but may produce slightly inferior results.
00210     switch (layering_mode)
00211     {
00212 
00213     case 0:
00214     {
00215         // 2-layers, 2-frame period
00216         int ids[2] = {0,1};
00217         cfg.ts_number_layers     = 2;
00218         cfg.ts_periodicity       = 2;
00219         cfg.ts_rate_decimator[0] = 2;
00220         cfg.ts_rate_decimator[1] = 1;
00221         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00222 
00223         flag_periodicity = cfg.ts_periodicity;
00224 #if 1
00225         // 0=L, 1=GF, Intra-layer prediction enabled
00226         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00227                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
00228                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
00229         layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
00230                          VP8_EFLAG_NO_REF_ARF;
00231 #else
00232         // 0=L, 1=GF, Intra-layer prediction disabled
00233         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00234                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF |
00235                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF;
00236         layer_flags[1] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST |
00237                          VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_REF_LAST;
00238 #endif
00239         break;
00240     }
00241 
00242     case 1:
00243     {
00244         // 2-layers, 3-frame period
00245         int ids[3] = {0,1,1};
00246         cfg.ts_number_layers     = 2;
00247         cfg.ts_periodicity       = 3;
00248         cfg.ts_rate_decimator[0] = 3;
00249         cfg.ts_rate_decimator[1] = 1;
00250         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00251 
00252         flag_periodicity = cfg.ts_periodicity;
00253 
00254         // 0=L, 1=GF, Intra-layer prediction enabled
00255         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00256                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00257                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00258         layer_flags[1] =
00259         layer_flags[2] = VP8_EFLAG_NO_REF_GF  |
00260                          VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
00261                                                 VP8_EFLAG_NO_UPD_LAST;
00262         break;
00263     }
00264 
00265     case 2:
00266     {
00267         // 3-layers, 6-frame period
00268         int ids[6] = {0,2,2,1,2,2};
00269         cfg.ts_number_layers     = 3;
00270         cfg.ts_periodicity       = 6;
00271         cfg.ts_rate_decimator[0] = 6;
00272         cfg.ts_rate_decimator[1] = 3;
00273         cfg.ts_rate_decimator[2] = 1;
00274         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00275 
00276         flag_periodicity = cfg.ts_periodicity;
00277 
00278         // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled
00279         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00280                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00281                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00282         layer_flags[3] = VP8_EFLAG_NO_REF_ARF | VP8_EFLAG_NO_UPD_ARF |
00283                                                 VP8_EFLAG_NO_UPD_LAST;
00284         layer_flags[1] =
00285         layer_flags[2] =
00286         layer_flags[4] =
00287         layer_flags[5] = VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_LAST;
00288         break;
00289     }
00290 
00291     case 3:
00292     {
00293         // 3-layers, 4-frame period
00294         int ids[4] = {0,2,1,2};
00295         cfg.ts_number_layers     = 3;
00296         cfg.ts_periodicity       = 4;
00297         cfg.ts_rate_decimator[0] = 4;
00298         cfg.ts_rate_decimator[1] = 2;
00299         cfg.ts_rate_decimator[2] = 1;
00300         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00301 
00302         flag_periodicity = cfg.ts_periodicity;
00303 
00304         // 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled
00305         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00306                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00307                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00308         layer_flags[2] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00309                          VP8_EFLAG_NO_UPD_ARF |
00310                          VP8_EFLAG_NO_UPD_LAST;
00311         layer_flags[1] =
00312         layer_flags[3] = VP8_EFLAG_NO_REF_ARF |
00313                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
00314                          VP8_EFLAG_NO_UPD_ARF;
00315         break;
00316     }
00317 
00318     case 4:
00319     {
00320         // 3-layers, 4-frame period
00321         int ids[4] = {0,2,1,2};
00322         cfg.ts_number_layers     = 3;
00323         cfg.ts_periodicity       = 4;
00324         cfg.ts_rate_decimator[0] = 4;
00325         cfg.ts_rate_decimator[1] = 2;
00326         cfg.ts_rate_decimator[2] = 1;
00327         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00328 
00329         flag_periodicity = cfg.ts_periodicity;
00330 
00331         // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1,
00332         // disabled in layer 2
00333         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00334                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00335                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00336         layer_flags[2] = VP8_EFLAG_NO_REF_ARF |
00337                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
00338         layer_flags[1] =
00339         layer_flags[3] = VP8_EFLAG_NO_REF_ARF |
00340                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
00341                          VP8_EFLAG_NO_UPD_ARF;
00342         break;
00343     }
00344 
00345     case 5:
00346     {
00347         // 3-layers, 4-frame period
00348         int ids[4] = {0,2,1,2};
00349         cfg.ts_number_layers     = 3;
00350         cfg.ts_periodicity       = 4;
00351         cfg.ts_rate_decimator[0] = 4;
00352         cfg.ts_rate_decimator[1] = 2;
00353         cfg.ts_rate_decimator[2] = 1;
00354         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00355 
00356         flag_periodicity = cfg.ts_periodicity;
00357 
00358         // 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled
00359         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00360                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00361                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00362         layer_flags[2] = VP8_EFLAG_NO_REF_ARF |
00363                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
00364         layer_flags[1] =
00365         layer_flags[3] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
00366         break;
00367     }
00368 
00369     case 6:
00370     {
00371         // NOTE: Probably of academic interest only
00372 
00373         // 5-layers, 16-frame period
00374         int ids[16] = {0,4,3,4,2,4,3,4,1,4,3,4,2,4,3,4};
00375         cfg.ts_number_layers     = 5;
00376         cfg.ts_periodicity       = 16;
00377         cfg.ts_rate_decimator[0] = 16;
00378         cfg.ts_rate_decimator[1] = 8;
00379         cfg.ts_rate_decimator[2] = 4;
00380         cfg.ts_rate_decimator[3] = 2;
00381         cfg.ts_rate_decimator[4] = 1;
00382         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00383 
00384         flag_periodicity = cfg.ts_periodicity;
00385 
00386         layer_flags[0]  = VPX_EFLAG_FORCE_KF;
00387         layer_flags[1]  =
00388         layer_flags[3]  =
00389         layer_flags[5]  =
00390         layer_flags[7]  =
00391         layer_flags[9]  =
00392         layer_flags[11] =
00393         layer_flags[13] =
00394         layer_flags[15] = VP8_EFLAG_NO_UPD_LAST |
00395                           VP8_EFLAG_NO_UPD_GF   |
00396                           VP8_EFLAG_NO_UPD_ARF;
00397         layer_flags[2]  =
00398         layer_flags[6]  =
00399         layer_flags[10] =
00400         layer_flags[14] = VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_GF;
00401         layer_flags[4]  =
00402         layer_flags[12] = VP8_EFLAG_NO_REF_LAST |
00403                           VP8_EFLAG_NO_UPD_ARF;
00404         layer_flags[8]  = VP8_EFLAG_NO_REF_LAST | VP8_EFLAG_NO_REF_GF;
00405         break;
00406     }
00407 
00408     case 7:
00409     {
00410         // 2-layers
00411         int ids[2] = {0,1};
00412         cfg.ts_number_layers     = 2;
00413         cfg.ts_periodicity       = 2;
00414         cfg.ts_rate_decimator[0] = 2;
00415         cfg.ts_rate_decimator[1] = 1;
00416         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00417 
00418         flag_periodicity = 8;
00419 
00420         // 0=L, 1=GF
00421         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00422                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00423                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00424         layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00425                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
00426         layer_flags[2] =
00427         layer_flags[4] =
00428         layer_flags[6] = VP8_EFLAG_NO_REF_GF  | VP8_EFLAG_NO_REF_ARF |
00429                          VP8_EFLAG_NO_UPD_GF  | VP8_EFLAG_NO_UPD_ARF;
00430         layer_flags[3] =
00431         layer_flags[5] = VP8_EFLAG_NO_REF_ARF |
00432                          VP8_EFLAG_NO_UPD_ARF | VP8_EFLAG_NO_UPD_LAST;
00433         layer_flags[7] = VP8_EFLAG_NO_REF_ARF |
00434                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
00435                          VP8_EFLAG_NO_UPD_ARF |
00436                          VP8_EFLAG_NO_UPD_ENTROPY;
00437         break;
00438     }
00439 
00440     case 8:
00441     default:
00442     {
00443         // 3-layers
00444         int ids[4] = {0,2,1,2};
00445         cfg.ts_number_layers     = 3;
00446         cfg.ts_periodicity       = 4;
00447         cfg.ts_rate_decimator[0] = 4;
00448         cfg.ts_rate_decimator[1] = 2;
00449         cfg.ts_rate_decimator[2] = 1;
00450         memcpy(cfg.ts_layer_id, ids, sizeof(ids));
00451 
00452         flag_periodicity = 8;
00453 
00454         // 0=L, 1=GF, 2=ARF
00455         layer_flags[0] = VPX_EFLAG_FORCE_KF  |
00456                          VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00457                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00458         layer_flags[1] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00459                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
00460         layer_flags[2] = VP8_EFLAG_NO_REF_GF   | VP8_EFLAG_NO_REF_ARF |
00461                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
00462         layer_flags[3] =
00463         layer_flags[5] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF;
00464         layer_flags[4] = VP8_EFLAG_NO_REF_GF | VP8_EFLAG_NO_REF_ARF |
00465                          VP8_EFLAG_NO_UPD_GF | VP8_EFLAG_NO_UPD_ARF;
00466         layer_flags[6] = VP8_EFLAG_NO_REF_ARF |
00467                          VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_ARF;
00468         layer_flags[7] = VP8_EFLAG_NO_UPD_LAST | VP8_EFLAG_NO_UPD_GF |
00469                          VP8_EFLAG_NO_UPD_ARF |
00470                          VP8_EFLAG_NO_UPD_ENTROPY;
00471         break;
00472     }
00473     }
00474 
00475     // Open input file
00476     if(!(infile = fopen(argv[1], "rb")))
00477         die("Failed to open %s for reading", argv[1]);
00478 
00479     // Open an output file for each stream
00480     for (i=0; i<cfg.ts_number_layers; i++)
00481     {
00482         char file_name[512];
00483         sprintf (file_name, "%s_%d.ivf", argv[2], i);
00484         if (!(outfile[i] = fopen(file_name, "wb")))
00485             die("Failed to open %s for writing", file_name);
00486         write_ivf_file_header(outfile[i], &cfg, 0);
00487     }
00488 
00489     // Initialize codec
00490     if (vpx_codec_enc_init (&codec, interface, &cfg, 0))
00491         die_codec (&codec, "Failed to initialize encoder");
00492 
00493     // Cap CPU & first I-frame size
00494     vpx_codec_control (&codec, VP8E_SET_CPUUSED,                -6);
00495     vpx_codec_control (&codec, VP8E_SET_STATIC_THRESHOLD,      800);
00496     vpx_codec_control (&codec, VP8E_SET_NOISE_SENSITIVITY,       2);
00497 
00498     max_intra_size_pct = (int) (((double)cfg.rc_buf_optimal_sz * 0.5)
00499                          * ((double) cfg.g_timebase.den / cfg.g_timebase.num)
00500                          / 10.0);
00501     //printf ("max_intra_size_pct=%d\n", max_intra_size_pct);
00502 
00503     vpx_codec_control(&codec, VP8E_SET_MAX_INTRA_BITRATE_PCT,
00504                       max_intra_size_pct);
00505     //    vpx_codec_control (&codec, VP8E_SET_TOKEN_PARTITIONS,
00506     //                      static_cast<vp8e_token_partitions>(_tokenPartitions));
00507 
00508     frame_avail = 1;
00509     while (frame_avail || got_data) {
00510         vpx_codec_iter_t iter = NULL;
00511         const vpx_codec_cx_pkt_t *pkt;
00512 
00513         flags = layer_flags[frame_cnt % flag_periodicity];
00514 
00515         frame_avail = read_frame(infile, &raw);
00516         if (vpx_codec_encode(&codec, frame_avail? &raw : NULL, pts,
00517                             1, flags, VPX_DL_REALTIME))
00518             die_codec(&codec, "Failed to encode frame");
00519 
00520         // Reset KF flag
00521         if (layering_mode != 6)
00522             layer_flags[0] &= ~VPX_EFLAG_FORCE_KF;
00523 
00524         got_data = 0;
00525         while ( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
00526             got_data = 1;
00527             switch (pkt->kind) {
00528             case VPX_CODEC_CX_FRAME_PKT:
00529                 for (i=cfg.ts_layer_id[frame_cnt % cfg.ts_periodicity];
00530                                               i<cfg.ts_number_layers; i++)
00531                 {
00532                     write_ivf_frame_header(outfile[i], pkt);
00533                     if (fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz,
00534                               outfile[i]));
00535                     frames_in_layer[i]++;
00536                 }
00537                 break;
00538             default:
00539                 break;
00540             }
00541             printf (pkt->kind == VPX_CODEC_CX_FRAME_PKT
00542                     && (pkt->data.frame.flags & VPX_FRAME_IS_KEY)? "K":".");
00543             fflush (stdout);
00544         }
00545         frame_cnt++;
00546         pts += frame_duration;
00547     }
00548     printf ("\n");
00549     fclose (infile);
00550 
00551     printf ("Processed %d frames.\n",frame_cnt-1);
00552     if (vpx_codec_destroy(&codec))
00553             die_codec (&codec, "Failed to destroy codec");
00554 
00555     // Try to rewrite the output file headers with the actual frame count
00556     for (i=0; i<cfg.ts_number_layers; i++)
00557     {
00558         if (!fseek(outfile[i], 0, SEEK_SET))
00559             write_ivf_file_header (outfile[i], &cfg, frames_in_layer[i]);
00560         fclose (outfile[i]);
00561     }
00562 
00563     return EXIT_SUCCESS;
00564 }
00565