<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>WebM VP8 Codec SDK: vp8_scalable_patterns</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.7.4 -->
<div id="top">
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">WebM VP8 Codec SDK</div>
</td>
</tr>
</tbody>
</table>
</div>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li class="current"><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="samples.html">Sample Code</a> </li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">vp8_scalable_patterns </div> </div>
</div>
<div class="contents">
<div class="textblock"><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2010 The WebM project authors. All Rights Reserved.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Use of this source code is governed by a BSD-style license</span>
<a name="l00005"></a>00005 <span class="comment"> * that can be found in the LICENSE file in the root of the source</span>
<a name="l00006"></a>00006 <span class="comment"> * tree. An additional intellectual property rights grant can be found</span>
<a name="l00007"></a>00007 <span class="comment"> * in the file PATENTS. All contributing project authors may</span>
<a name="l00008"></a>00008 <span class="comment"> * be found in the AUTHORS file in the root of the source tree.</span>
<a name="l00009"></a>00009 <span class="comment"> */</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011
<a name="l00012"></a>00012 <span class="comment">/*</span>
<a name="l00013"></a>00013 <span class="comment"> * This is an example demonstrating how to implement a multi-layer VP8</span>
<a name="l00014"></a>00014 <span class="comment"> * encoding scheme based on temporal scalability for video applications</span>
<a name="l00015"></a>00015 <span class="comment"> * that benefit from a scalable bitstream.</span>
<a name="l00016"></a>00016 <span class="comment"> */</span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <stdio.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <stdlib.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <stdarg.h></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <string.h></span>
<a name="l00021"></a>00021 <span class="preprocessor">#define VPX_CODEC_DISABLE_COMPAT 1</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="vpx__encoder_8h.html" title="Describes the encoder algorithm interface to applications.">vpx/vpx_encoder.h</a>"</span>
<a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="vp8cx_8h.html" title="Provides definitions for using the VP8 encoder algorithm within the vpx Codec Interface.">vpx/vp8cx.h</a>"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#define interface (vpx_codec_vp8_cx())</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span><span class="preprocessor">#define fourcc 0x30385056</span>
<a name="l00026"></a>00026 <span class="preprocessor"></span>
<a name="l00027"></a>00027 <span class="preprocessor">#define IVF_FILE_HDR_SZ (32)</span>
<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define IVF_FRAME_HDR_SZ (12)</span>
<a name="l00029"></a>00029 <span class="preprocessor"></span>
<a name="l00030"></a>00030 <span class="keyword">static</span> <span class="keywordtype">void</span> mem_put_le16(<span class="keywordtype">char</span> *mem, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> val) {
<a name="l00031"></a>00031 mem[0] = val;
<a name="l00032"></a>00032 mem[1] = val>>8;
<a name="l00033"></a>00033 }
<a name="l00034"></a>00034
<a name="l00035"></a>00035 <span class="keyword">static</span> <span class="keywordtype">void</span> mem_put_le32(<span class="keywordtype">char</span> *mem, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> val) {
<a name="l00036"></a>00036 mem[0] = val;
<a name="l00037"></a>00037 mem[1] = val>>8;
<a name="l00038"></a>00038 mem[2] = val>>16;
<a name="l00039"></a>00039 mem[3] = val>>24;
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">static</span> <span class="keywordtype">void</span> die(<span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...) {
<a name="l00043"></a>00043 va_list ap;
<a name="l00044"></a>00044
<a name="l00045"></a>00045 va_start(ap, fmt);
<a name="l00046"></a>00046 vprintf(fmt, ap);
<a name="l00047"></a>00047 <span class="keywordflow">if</span>(fmt[strlen(fmt)-1] != <span class="charliteral">'\n'</span>)
<a name="l00048"></a>00048 printf(<span class="stringliteral">"\n"</span>);
<a name="l00049"></a>00049 exit(EXIT_FAILURE);
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 <span class="keyword">static</span> <span class="keywordtype">void</span> die_codec(<a class="code" href="structvpx__codec__ctx.html" title="Codec context structure.">vpx_codec_ctx_t</a> *ctx, <span class="keyword">const</span> <span class="keywordtype">char</span> *s) {
<a name="l00053"></a>00053 <span class="keyword">const</span> <span class="keywordtype">char</span> *detail = <a class="code" href="group__codec.html#ga29273cb552ed1a437fe263c4a0a54300" title="Retrieve detailed error information for codec context.">vpx_codec_error_detail</a>(ctx);
<a name="l00054"></a>00054
<a name="l00055"></a>00055 printf(<span class="stringliteral">"%s: %s\n"</span>, s, <a class="code" href="group__codec.html#ga4d265df00d42b36a4f0e3eb83fc22c5e" title="Retrieve error synopsis for codec context.">vpx_codec_error</a>(ctx));
<a name="l00056"></a>00056 <span class="keywordflow">if</span>(detail)
<a name="l00057"></a>00057 printf(<span class="stringliteral">" %s\n"</span>,detail);
<a name="l00058"></a>00058 exit(EXIT_FAILURE);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keyword">static</span> <span class="keywordtype">int</span> read_frame(FILE *f, <a class="code" href="structvpx__image.html" title="Image Descriptor.">vpx_image_t</a> *img) {
<a name="l00062"></a>00062 <span class="keywordtype">size_t</span> nbytes, to_read;
<a name="l00063"></a>00063 <span class="keywordtype">int</span> res = 1;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 to_read = img-><a class="code" href="structvpx__image.html#ac7b7d569142f878155b28141653adcd6">w</a>*img-><a class="code" href="structvpx__image.html#a9d1070804dfe08cd5becd68d597fee69">h</a>*3/2;
<a name="l00066"></a>00066 nbytes = fread(img-><a class="code" href="structvpx__image.html#ab6258308ba7a5f4a113348120e20e2ce">planes</a>[0], 1, to_read, f);
<a name="l00067"></a>00067 <span class="keywordflow">if</span>(nbytes != to_read) {
<a name="l00068"></a>00068 res = 0;
<a name="l00069"></a>00069 <span class="keywordflow">if</span>(nbytes > 0)
<a name="l00070"></a>00070 printf(<span class="stringliteral">"Warning: Read partial frame. Check your width & height!\n"</span>);
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072 <span class="keywordflow">return</span> res;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="keyword">static</span> <span class="keywordtype">void</span> write_ivf_file_header(FILE *outfile,
<a name="l00076"></a>00076 <span class="keyword">const</span> <a class="code" href="structvpx__codec__enc__cfg.html" title="Encoder configuration structure.">vpx_codec_enc_cfg_t</a> *cfg,
<a name="l00077"></a>00077 <span class="keywordtype">int</span> frame_cnt) {
<a name="l00078"></a>00078 <span class="keywordtype">char</span> header[32];
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="keywordflow">if</span>(cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a70d62d87aae7d1168746577f14a6dccf" title="Multi-pass Encoding Mode.">g_pass</a> != <a class="code" href="group__encoder.html#gga476c5417f9c15a1dc5d3f68fa44c493fa7b6943a41868e8e26a77e9500f139ca1">VPX_RC_ONE_PASS</a> && cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a70d62d87aae7d1168746577f14a6dccf" title="Multi-pass Encoding Mode.">g_pass</a> != <a class="code" href="group__encoder.html#gga476c5417f9c15a1dc5d3f68fa44c493fa65da543b956d6a9b1f301ab8cc90d3a7">VPX_RC_LAST_PASS</a>)
<a name="l00081"></a>00081 <span class="keywordflow">return</span>;
<a name="l00082"></a>00082 header[0] = <span class="charliteral">'D'</span>;
<a name="l00083"></a>00083 header[1] = <span class="charliteral">'K'</span>;
<a name="l00084"></a>00084 header[2] = <span class="charliteral">'I'</span>;
<a name="l00085"></a>00085 header[3] = <span class="charliteral">'F'</span>;
<a name="l00086"></a>00086 mem_put_le16(header+4, 0); <span class="comment">/* version */</span>
<a name="l00087"></a>00087 mem_put_le16(header+6, 32); <span class="comment">/* headersize */</span>
<a name="l00088"></a>00088 mem_put_le32(header+8, fourcc); <span class="comment">/* headersize */</span>
<a name="l00089"></a>00089 mem_put_le16(header+12, cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a5c165f5b41ca1158f2883983a2b7709c" title="Width of the frame.">g_w</a>); <span class="comment">/* width */</span>
<a name="l00090"></a>00090 mem_put_le16(header+14, cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a4132bd89ce85bce7c08f2cc3b6f2b82e" title="Height of the frame.">g_h</a>); <span class="comment">/* height */</span>
<a name="l00091"></a>00091 mem_put_le32(header+16, cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a6498d378e4c29ef3e22258289e481087" title="Stream timebase units.">g_timebase</a>.<a class="code" href="structvpx__rational.html#a29dd2ab4001377b3aa21885ef969759f">den</a>); <span class="comment">/* rate */</span>
<a name="l00092"></a>00092 mem_put_le32(header+20, cfg-><a class="code" href="structvpx__codec__enc__cfg.html#a6498d378e4c29ef3e22258289e481087" title="Stream timebase units.">g_timebase</a>.<a class="code" href="structvpx__rational.html#ae7774f21a22c9bef3aa73156c79f4731">num</a>); <span class="comment">/* scale */</span>
<a name="l00093"></a>00093 mem_put_le32(header+24, frame_cnt); <span class="comment">/* length */</span>
<a name="l00094"></a>00094 mem_put_le32(header+28, 0); <span class="comment">/* unused */</span>
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="keywordflow">if</span>(fwrite(header, 1, 32, outfile));
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keyword">static</span> <span class="keywordtype">void</span> write_ivf_frame_header(FILE *outfile,
<a name="l00101"></a>00101 <span class="keyword">const</span> <a class="code" href="structvpx__codec__cx__pkt.html" title="Encoder output packet.">vpx_codec_cx_pkt_t</a> *pkt)
<a name="l00102"></a>00102 {
<a name="l00103"></a>00103 <span class="keywordtype">char</span> header[12];
<a name="l00104"></a>00104 <a class="code" href="group__encoder.html#ga7e711b0a71c65aef8f0faea8bd57b05f" title="Time Stamp Type.">vpx_codec_pts_t</a> pts;
<a name="l00105"></a>00105
<a name="l00106"></a>00106 <span class="keywordflow">if</span>(pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a41f395b39516343c1329a4a85a0084f2">kind</a> != <a class="code" href="group__encoder.html#gga28a79375279536526552af3a83d2ed72a2261aae5594289400e812fb1e6b6b0cc">VPX_CODEC_CX_FRAME_PKT</a>)
<a name="l00107"></a>00107 <span class="keywordflow">return</span>;
<a name="l00108"></a>00108
<a name="l00109"></a>00109 pts = pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a7f97b060a23b7e89fe5b885c0074f696">data</a>.<a class="code" href="structvpx__codec__cx__pkt.html#a81e33bf4408a3983abb16492fee359ff">frame</a>.pts;
<a name="l00110"></a>00110 mem_put_le32(header, pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a7f97b060a23b7e89fe5b885c0074f696">data</a>.<a class="code" href="structvpx__codec__cx__pkt.html#a81e33bf4408a3983abb16492fee359ff">frame</a>.sz);
<a name="l00111"></a>00111 mem_put_le32(header+4, pts&0xFFFFFFFF);
<a name="l00112"></a>00112 mem_put_le32(header+8, pts >> 32);
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="keywordflow">if</span>(fwrite(header, 1, 12, outfile));
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 <span class="keyword">static</span> <span class="keywordtype">int</span> mode_to_num_layers[7] = {2, 2, 3, 3, 3, 3, 5};
<a name="l00118"></a>00118
<a name="l00119"></a>00119 <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv) {
<a name="l00120"></a>00120 FILE *infile, *outfile[MAX_LAYERS];
<a name="l00121"></a>00121 <a class="code" href="structvpx__codec__ctx.html" title="Codec context structure.">vpx_codec_ctx_t</a> codec;
<a name="l00122"></a>00122 <a class="code" href="structvpx__codec__enc__cfg.html" title="Encoder configuration structure.">vpx_codec_enc_cfg_t</a> cfg;
<a name="l00123"></a>00123 <span class="keywordtype">int</span> frame_cnt = 0;
<a name="l00124"></a>00124 <a class="code" href="structvpx__image.html" title="Image Descriptor.">vpx_image_t</a> raw;
<a name="l00125"></a>00125 <a class="code" href="group__codec.html#gada1084710837ad363b92f2379dd2b8d2" title="Algorithm return codes.">vpx_codec_err_t</a> res;
<a name="l00126"></a>00126 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> width;
<a name="l00127"></a>00127 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> height;
<a name="l00128"></a>00128 <span class="keywordtype">int</span> frame_avail;
<a name="l00129"></a>00129 <span class="keywordtype">int</span> got_data;
<a name="l00130"></a>00130 <span class="keywordtype">int</span> flags = 0;
<a name="l00131"></a>00131 <span class="keywordtype">int</span> i;
<a name="l00132"></a>00132 <span class="keywordtype">int</span> pts = 0; <span class="comment">// PTS starts at 0</span>
<a name="l00133"></a>00133 <span class="keywordtype">int</span> frame_duration = 1; <span class="comment">// 1 timebase tick per frame</span>
<a name="l00134"></a>00134
<a name="l00135"></a>00135 <span class="keywordtype">int</span> layering_mode = 0;
<a name="l00136"></a>00136 <span class="keywordtype">int</span> frames_in_layer[MAX_LAYERS] = {0};
<a name="l00137"></a>00137 <span class="keywordtype">int</span> layer_flags[MAX_PERIODICITY] = {0};
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// Check usage and arguments</span>
<a name="l00140"></a>00140 <span class="keywordflow">if</span> (argc < 9)
<a name="l00141"></a>00141 die(<span class="stringliteral">"Usage: %s <infile> <outfile> <width> <height> <rate_num> "</span>
<a name="l00142"></a>00142 <span class="stringliteral">" <rate_den> <mode> <Rate_0> ... <Rate_nlayers-1>\n"</span>, argv[0]);
<a name="l00143"></a>00143
<a name="l00144"></a>00144 width = strtol (argv[3], NULL, 0);
<a name="l00145"></a>00145 height = strtol (argv[4], NULL, 0);
<a name="l00146"></a>00146 <span class="keywordflow">if</span> (width < 16 || width%2 || height <16 || height%2)
<a name="l00147"></a>00147 die (<span class="stringliteral">"Invalid resolution: %d x %d"</span>, width, height);
<a name="l00148"></a>00148
<a name="l00149"></a>00149 <span class="keywordflow">if</span> (!sscanf(argv[7], <span class="stringliteral">"%d"</span>, &layering_mode))
<a name="l00150"></a>00150 die (<span class="stringliteral">"Invalid mode %s"</span>, argv[7]);
<a name="l00151"></a>00151 <span class="keywordflow">if</span> (layering_mode<0 || layering_mode>6)
<a name="l00152"></a>00152 die (<span class="stringliteral">"Invalid mode (0..6) %s"</span>, argv[7]);
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (argc != 8+mode_to_num_layers[layering_mode])
<a name="l00155"></a>00155 die (<span class="stringliteral">"Invalid number of arguments"</span>);
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordflow">if</span> (!<a class="code" href="vpx__image_8h.html#ab80398f28ca880368a922fa979eb66c1" title="Open a descriptor, allocating storage for the underlying image.">vpx_img_alloc</a> (&raw, <a class="code" href="vpx__image_8h.html#a7a30a7bff7400fb83ad45fede5077193af17ce49c9a6efd7c8c8ea8928d4ce26c">VPX_IMG_FMT_I420</a>, width, height, 1))
<a name="l00158"></a>00158 die (<span class="stringliteral">"Failed to allocate image"</span>, width, height);
<a name="l00159"></a>00159
<a name="l00160"></a>00160 printf(<span class="stringliteral">"Using %s\n"</span>,<a class="code" href="group__codec.html#ga9eee39f450d8cdcf5aba0e2bda6e5aa8" title="Return the name for a given interface.">vpx_codec_iface_name</a>(interface));
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="comment">// Populate encoder configuration</span>
<a name="l00163"></a>00163 res = <a class="code" href="group__encoder.html#ga9ab8c79623312e9c5d5405d66a788f59" title="Get a default configuration.">vpx_codec_enc_config_default</a>(interface, &cfg, 0);
<a name="l00164"></a>00164 <span class="keywordflow">if</span>(res) {
<a name="l00165"></a>00165 printf(<span class="stringliteral">"Failed to get config: %s\n"</span>, <a class="code" href="group__codec.html#gaaddf5c1f609ef18c7c8800d102fcefa6" title="Convert error number to printable string.">vpx_codec_err_to_string</a>(res));
<a name="l00166"></a>00166 <span class="keywordflow">return</span> EXIT_FAILURE;
<a name="l00167"></a>00167 }
<a name="l00168"></a>00168
<a name="l00169"></a>00169 <span class="comment">// Update the default configuration with our settings</span>
<a name="l00170"></a>00170 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a5c165f5b41ca1158f2883983a2b7709c" title="Width of the frame.">g_w</a> = width;
<a name="l00171"></a>00171 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4132bd89ce85bce7c08f2cc3b6f2b82e" title="Height of the frame.">g_h</a> = height;
<a name="l00172"></a>00172
<a name="l00173"></a>00173 <span class="comment">// Timebase format e.g. 30fps: numerator=1, demoninator=30</span>
<a name="l00174"></a>00174 <span class="keywordflow">if</span> (!sscanf (argv[5], <span class="stringliteral">"%d"</span>, &cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a6498d378e4c29ef3e22258289e481087" title="Stream timebase units.">g_timebase</a>.<a class="code" href="structvpx__rational.html#ae7774f21a22c9bef3aa73156c79f4731">num</a> ))
<a name="l00175"></a>00175 die (<span class="stringliteral">"Invalid timebase numerator %s"</span>, argv[5]);
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (!sscanf (argv[6], <span class="stringliteral">"%d"</span>, &cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a6498d378e4c29ef3e22258289e481087" title="Stream timebase units.">g_timebase</a>.<a class="code" href="structvpx__rational.html#a29dd2ab4001377b3aa21885ef969759f">den</a> ))
<a name="l00177"></a>00177 die (<span class="stringliteral">"Invalid timebase denominator %s"</span>, argv[6]);
<a name="l00178"></a>00178
<a name="l00179"></a>00179 <span class="keywordflow">for</span> (i=8; i<8+mode_to_num_layers[layering_mode]; i++)
<a name="l00180"></a>00180 <span class="keywordflow">if</span> (!sscanf(argv[i], <span class="stringliteral">"%d"</span>, &cfg.<a class="code" href="structvpx__codec__enc__cfg.html#aba7ceb7a90500a8f76aff89575737f3a" title="Target bitrate for each layer.">ts_target_bitrate</a>[i-8]))
<a name="l00181"></a>00181 die (<span class="stringliteral">"Invalid data rate %s"</span>, argv[i]);
<a name="l00182"></a>00182
<a name="l00183"></a>00183 <span class="comment">// Real time parameters</span>
<a name="l00184"></a>00184 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a619269f9a6904de58c4790e6806a3905" title="Temporal resampling configuration, if supported by the codec.">rc_dropframe_thresh</a> = 0;
<a name="l00185"></a>00185 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a99c415edb6c6f909a095a57c3430a116" title="Rate control algorithm to use.">rc_end_usage</a> = <a class="code" href="group__encoder.html#ggaf50e74d91be4cae6f70dfeba5b7410d2a8b02853cb35790d60cc171a11f6c268a">VPX_CBR</a>;
<a name="l00186"></a>00186 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a02a4e2f18fb0fdfff44df8b0d9a99d6c" title="Enable/disable spatial resampling, if supported by the codec.">rc_resize_allowed</a> = 0;
<a name="l00187"></a>00187 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a1324600e3c63faaa7717e85cf6509dd9" title="Minimum (Best Quality) Quantizer.">rc_min_quantizer</a> = 4;
<a name="l00188"></a>00188 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a8abdd985d317b720e142335887d737df" title="Maximum (Worst Quality) Quantizer.">rc_max_quantizer</a> = 63;
<a name="l00189"></a>00189 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad279fbb0a9fe9395340913161e28651a" title="Rate control adaptation undershoot control.">rc_undershoot_pct</a> = 98;
<a name="l00190"></a>00190 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4f2fbd015c1b1f395cc4a4b03d4ead5f" title="Rate control adaptation overshoot control.">rc_overshoot_pct</a> = 100;
<a name="l00191"></a>00191 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#aa9e4d6405994ef42d61d478cf6e0d5e0" title="Decoder Buffer Initial Size.">rc_buf_initial_sz</a> = 500;
<a name="l00192"></a>00192 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#aafde485867e040a58504ad796e79e47f" title="Decoder Buffer Optimal Size.">rc_buf_optimal_sz</a> = 600;
<a name="l00193"></a>00193 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a61866272bb588cd86d28834f420430f0" title="Decoder Buffer Size.">rc_buf_sz</a> = 1000;
<a name="l00194"></a>00194
<a name="l00195"></a>00195 <span class="comment">// Enable error resilient mode</span>
<a name="l00196"></a>00196 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4e17173b66ca0d7dfba9978625d7ba76" title="Enable error resilient modes.">g_error_resilient</a> = 1;
<a name="l00197"></a>00197 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a992668d9e30305f3f7ab2672ea31a890" title="Allow lagged encoding.">g_lag_in_frames</a> = 0;
<a name="l00198"></a>00198 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a491d67f061dcdb13f60c017563e9d788" title="Keyframe placement mode.">kf_mode</a> = <a class="code" href="group__encoder.html#gga9f461802aa4db35c04a8b23837987f40a56513f60cbf3434ca0092173005d0ab2">VPX_KF_DISABLED</a>;
<a name="l00199"></a>00199
<a name="l00200"></a>00200 <span class="comment">// Disable automatic keyframe placement</span>
<a name="l00201"></a>00201 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a0a7b5444ecb09745cbe8d5af17553846" title="Keyframe minimum interval.">kf_min_dist</a> = cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ae018440136e271743376730413d25a9b" title="Keyframe maximum interval.">kf_max_dist</a> = 1000;
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="comment">// Temporal scaling parameters:</span>
<a name="l00204"></a>00204 <span class="comment">// NOTE: The 3 prediction frames cannot be used interchangeably due to</span>
<a name="l00205"></a>00205 <span class="comment">// differences in the way they are handled throughout the code. The</span>
<a name="l00206"></a>00206 <span class="comment">// frames should be allocated to layers in the order LAST, GF, ARF.</span>
<a name="l00207"></a>00207 <span class="comment">// Other combinations work, but may produce slightly inferior results.</span>
<a name="l00208"></a>00208 <span class="keywordflow">switch</span> (layering_mode)
<a name="l00209"></a>00209 {
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <span class="keywordflow">case</span> 0:
<a name="l00212"></a>00212 {
<a name="l00213"></a>00213 <span class="comment">// 2-layers, 2-frame period</span>
<a name="l00214"></a>00214 <span class="keywordtype">int</span> ids[2] = {0,1};
<a name="l00215"></a>00215 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 2;
<a name="l00216"></a>00216 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 2;
<a name="l00217"></a>00217 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 2;
<a name="l00218"></a>00218 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 1;
<a name="l00219"></a>00219 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <span class="preprocessor">#if 1</span>
<a name="l00222"></a>00222 <span class="preprocessor"></span> <span class="comment">// 0=L, 1=GF, Intra-layer prediction enabled</span>
<a name="l00223"></a>00223 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00224"></a>00224 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00225"></a>00225 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a>;
<a name="l00226"></a>00226 layer_flags[1] = <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> | <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> |
<a name="l00227"></a>00227 <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a>;
<a name="l00228"></a>00228 <span class="preprocessor">#else</span>
<a name="l00229"></a>00229 <span class="preprocessor"></span> <span class="comment">// 0=L, 1=GF, Intra-layer prediction disabled</span>
<a name="l00230"></a>00230 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00231"></a>00231 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00232"></a>00232 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a>;
<a name="l00233"></a>00233 layer_flags[1] = <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> | <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> |
<a name="l00234"></a>00234 <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> | <a class="code" href="group__vp8__encoder.html#gafb51c67e5743275146bc1fc425727da3" title="Don't reference the last frame.">VP8_EFLAG_NO_REF_LAST</a>;
<a name="l00235"></a>00235 <span class="preprocessor">#endif</span>
<a name="l00236"></a>00236 <span class="preprocessor"></span> <span class="keywordflow">break</span>;
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="keywordflow">case</span> 1:
<a name="l00240"></a>00240 {
<a name="l00241"></a>00241 <span class="comment">// 2-layers, 3-frame period</span>
<a name="l00242"></a>00242 <span class="keywordtype">int</span> ids[3] = {0,1,1};
<a name="l00243"></a>00243 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 2;
<a name="l00244"></a>00244 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 3;
<a name="l00245"></a>00245 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 3;
<a name="l00246"></a>00246 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 1;
<a name="l00247"></a>00247 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <span class="comment">// 0=L, 1=GF, Intra-layer prediction enabled</span>
<a name="l00250"></a>00250 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00251"></a>00251 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00252"></a>00252 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00253"></a>00253 layer_flags[1] =
<a name="l00254"></a>00254 layer_flags[2] = <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> |
<a name="l00255"></a>00255 <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00256"></a>00256 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a>;
<a name="l00257"></a>00257 <span class="keywordflow">break</span>;
<a name="l00258"></a>00258 }
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="keywordflow">case</span> 2:
<a name="l00261"></a>00261 {
<a name="l00262"></a>00262 <span class="comment">// 3-layers, 6-frame period</span>
<a name="l00263"></a>00263 <span class="keywordtype">int</span> ids[6] = {0,2,2,1,2,2};
<a name="l00264"></a>00264 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 3;
<a name="l00265"></a>00265 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 6;
<a name="l00266"></a>00266 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 6;
<a name="l00267"></a>00267 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 3;
<a name="l00268"></a>00268 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[2] = 1;
<a name="l00269"></a>00269 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="comment">// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled</span>
<a name="l00272"></a>00272 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00273"></a>00273 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00274"></a>00274 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00275"></a>00275 layer_flags[3] = <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00276"></a>00276 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a>;
<a name="l00277"></a>00277 layer_flags[1] =
<a name="l00278"></a>00278 layer_flags[2] =
<a name="l00279"></a>00279 layer_flags[4] =
<a name="l00280"></a>00280 layer_flags[5] = <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a>;
<a name="l00281"></a>00281 <span class="keywordflow">break</span>;
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keywordflow">case</span> 3:
<a name="l00285"></a>00285 {
<a name="l00286"></a>00286 <span class="comment">// 3-layers, 4-frame period</span>
<a name="l00287"></a>00287 <span class="keywordtype">int</span> ids[4] = {0,2,1,2};
<a name="l00288"></a>00288 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 3;
<a name="l00289"></a>00289 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 4;
<a name="l00290"></a>00290 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 4;
<a name="l00291"></a>00291 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 2;
<a name="l00292"></a>00292 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[2] = 1;
<a name="l00293"></a>00293 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00294"></a>00294
<a name="l00295"></a>00295 <span class="comment">// 0=L, 1=GF, 2=ARF, Intra-layer prediction disabled</span>
<a name="l00296"></a>00296 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00297"></a>00297 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00298"></a>00298 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00299"></a>00299 layer_flags[2] = <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00300"></a>00300 <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00301"></a>00301 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a>;
<a name="l00302"></a>00302 layer_flags[1] =
<a name="l00303"></a>00303 layer_flags[3] = <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00304"></a>00304 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> | <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> |
<a name="l00305"></a>00305 <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00306"></a>00306 <span class="keywordflow">break</span>;
<a name="l00307"></a>00307 }
<a name="l00308"></a>00308
<a name="l00309"></a>00309 <span class="keywordflow">case</span> 4:
<a name="l00310"></a>00310 {
<a name="l00311"></a>00311 <span class="comment">// 3-layers, 4-frame period</span>
<a name="l00312"></a>00312 <span class="keywordtype">int</span> ids[4] = {0,2,1,2};
<a name="l00313"></a>00313 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 3;
<a name="l00314"></a>00314 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 4;
<a name="l00315"></a>00315 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 4;
<a name="l00316"></a>00316 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 2;
<a name="l00317"></a>00317 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[2] = 1;
<a name="l00318"></a>00318 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00319"></a>00319
<a name="l00320"></a>00320 <span class="comment">// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled in layer 1,</span>
<a name="l00321"></a>00321 <span class="comment">// disabled in layer 2</span>
<a name="l00322"></a>00322 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00323"></a>00323 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00324"></a>00324 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00325"></a>00325 layer_flags[2] = <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00326"></a>00326 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00327"></a>00327 layer_flags[1] =
<a name="l00328"></a>00328 layer_flags[3] = <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00329"></a>00329 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> | <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> |
<a name="l00330"></a>00330 <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00331"></a>00331 <span class="keywordflow">break</span>;
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <span class="keywordflow">case</span> 5:
<a name="l00335"></a>00335 {
<a name="l00336"></a>00336 <span class="comment">// 3-layers, 4-frame period</span>
<a name="l00337"></a>00337 <span class="keywordtype">int</span> ids[4] = {0,2,1,2};
<a name="l00338"></a>00338 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 3;
<a name="l00339"></a>00339 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 4;
<a name="l00340"></a>00340 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 4;
<a name="l00341"></a>00341 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 2;
<a name="l00342"></a>00342 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[2] = 1;
<a name="l00343"></a>00343 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00344"></a>00344
<a name="l00345"></a>00345 <span class="comment">// 0=L, 1=GF, 2=ARF, Intra-layer prediction enabled</span>
<a name="l00346"></a>00346 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a> |
<a name="l00347"></a>00347 <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> | <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00348"></a>00348 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00349"></a>00349 layer_flags[2] = <a class="code" href="group__vp8__encoder.html#ga650ab0baea12be91082226a5cc18776a" title="Don't reference the alternate reference frame.">VP8_EFLAG_NO_REF_ARF</a> |
<a name="l00350"></a>00350 <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> | <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a>;
<a name="l00351"></a>00351 layer_flags[1] =
<a name="l00352"></a>00352 layer_flags[3] = <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> | <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a>;
<a name="l00353"></a>00353 <span class="keywordflow">break</span>;
<a name="l00354"></a>00354 }
<a name="l00355"></a>00355
<a name="l00356"></a>00356 <span class="keywordflow">case</span> 6:
<a name="l00357"></a>00357 {
<a name="l00358"></a>00358 <span class="comment">// NOTE: Probably of academic interest only</span>
<a name="l00359"></a>00359
<a name="l00360"></a>00360 <span class="comment">// 5-layers, 16-frame period</span>
<a name="l00361"></a>00361 <span class="keywordtype">int</span> ids[16] = {0,4,3,4,2,4,3,4,1,4,3,4,2,4,3,4};
<a name="l00362"></a>00362 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a> = 5;
<a name="l00363"></a>00363 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a> = 16;
<a name="l00364"></a>00364 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[0] = 16;
<a name="l00365"></a>00365 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[1] = 8;
<a name="l00366"></a>00366 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[2] = 4;
<a name="l00367"></a>00367 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[3] = 2;
<a name="l00368"></a>00368 cfg.<a class="code" href="structvpx__codec__enc__cfg.html#ad40c30846ef8ef1d8684f10a491ec535" title="Frame rate decimation factor for each layer.">ts_rate_decimator</a>[4] = 1;
<a name="l00369"></a>00369 memcpy(cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>, ids, <span class="keyword">sizeof</span>(ids));
<a name="l00370"></a>00370
<a name="l00371"></a>00371 layer_flags[0] = <a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a>;
<a name="l00372"></a>00372 layer_flags[1] =
<a name="l00373"></a>00373 layer_flags[3] =
<a name="l00374"></a>00374 layer_flags[5] =
<a name="l00375"></a>00375 layer_flags[7] =
<a name="l00376"></a>00376 layer_flags[9] =
<a name="l00377"></a>00377 layer_flags[11] =
<a name="l00378"></a>00378 layer_flags[13] =
<a name="l00379"></a>00379 layer_flags[15] = <a class="code" href="group__vp8__encoder.html#ga602edb6b02a89cb2db7a16d6dffba583" title="Don't update the last frame.">VP8_EFLAG_NO_UPD_LAST</a> |
<a name="l00380"></a>00380 <a class="code" href="group__vp8__encoder.html#gab01d066c5236457d345ce1cab4c41d6b" title="Don't update the golden frame.">VP8_EFLAG_NO_UPD_GF</a> |
<a name="l00381"></a>00381 <a class="code" href="group__vp8__encoder.html#ga1cff46a5287e73a620660030d40b9e6c" title="Don't update the alternate reference frame.">VP8_EFLAG_NO_UPD_ARF</a> |
<a name="l00382"></a>00382 <a class="code" href="group__vp8__encoder.html#ga5b91ad179910d4efc23aef66c7b2148b" title="Disable entropy update.">VP8_EFLAG_NO_UPD_ENTROPY</a>;
<a name="l00383"></a>00383 layer_flags[2] =
<a name="l00384"></a>00384 layer_flags[6] =
<a name="l00385"></a>00385 layer_flags[10] =
<a name="l00386"></a>00386 layer_flags[14] = 0;
<a name="l00387"></a>00387 layer_flags[4] =
<a name="l00388"></a>00388 layer_flags[12] = <a class="code" href="group__vp8__encoder.html#gafb51c67e5743275146bc1fc425727da3" title="Don't reference the last frame.">VP8_EFLAG_NO_REF_LAST</a>;
<a name="l00389"></a>00389 layer_flags[8] = <a class="code" href="group__vp8__encoder.html#gafb51c67e5743275146bc1fc425727da3" title="Don't reference the last frame.">VP8_EFLAG_NO_REF_LAST</a> | <a class="code" href="group__vp8__encoder.html#gabb5e95343a2738abef44eca13059da33" title="Don't reference the golden frame.">VP8_EFLAG_NO_REF_GF</a> |
<a name="l00390"></a>00390 <a class="code" href="group__vp8__encoder.html#ga5b91ad179910d4efc23aef66c7b2148b" title="Disable entropy update.">VP8_EFLAG_NO_UPD_ENTROPY</a>;
<a name="l00391"></a>00391 <span class="keywordflow">break</span>;
<a name="l00392"></a>00392 }
<a name="l00393"></a>00393
<a name="l00394"></a>00394 <span class="keywordflow">default</span>:
<a name="l00395"></a>00395 <span class="keywordflow">break</span>;
<a name="l00396"></a>00396 }
<a name="l00397"></a>00397
<a name="l00398"></a>00398 <span class="comment">// Open input file</span>
<a name="l00399"></a>00399 <span class="keywordflow">if</span>(!(infile = fopen(argv[1], <span class="stringliteral">"rb"</span>)))
<a name="l00400"></a>00400 die(<span class="stringliteral">"Failed to open %s for reading"</span>, argv[1]);
<a name="l00401"></a>00401
<a name="l00402"></a>00402 <span class="comment">// Open an output file for each stream</span>
<a name="l00403"></a>00403 <span class="keywordflow">for</span> (i=0; i<cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a>; i++)
<a name="l00404"></a>00404 {
<a name="l00405"></a>00405 <span class="keywordtype">char</span> file_name[512];
<a name="l00406"></a>00406 sprintf (file_name, <span class="stringliteral">"%s_%d.ivf"</span>, argv[2], i);
<a name="l00407"></a>00407 <span class="keywordflow">if</span> (!(outfile[i] = fopen(file_name, <span class="stringliteral">"wb"</span>)))
<a name="l00408"></a>00408 die(<span class="stringliteral">"Failed to open %s for writing"</span>, file_name);
<a name="l00409"></a>00409 write_ivf_file_header(outfile[i], &cfg, 0);
<a name="l00410"></a>00410 }
<a name="l00411"></a>00411
<a name="l00412"></a>00412 <span class="comment">// Initialize codec</span>
<a name="l00413"></a>00413 <span class="keywordflow">if</span> (<a class="code" href="group__encoder.html#ga3d490a2a9a6acd7c9ef82a603155f3cf" title="Convenience macro for vpx_codec_enc_init_ver()">vpx_codec_enc_init</a> (&codec, interface, &cfg, 0))
<a name="l00414"></a>00414 die_codec (&codec, <span class="stringliteral">"Failed to initialize encoder"</span>);
<a name="l00415"></a>00415
<a name="l00416"></a>00416 <span class="comment">// Cap CPU & first I-frame size</span>
<a name="l00417"></a>00417 <a class="code" href="group__codec.html#gac1b91e04698c1bd4c0a2b8aa85b08cd2" title="vpx_codec_control wrapper macro">vpx_codec_control</a> (&codec, <a class="code" href="group__vp8__encoder.html#gga6deae3d561c838952552c3d3756322eca953ff0eaa2fcdc2ecd627e449b026853" title="control function to set vp8 encoder cpuused">VP8E_SET_CPUUSED</a>, -6);
<a name="l00418"></a>00418 <a class="code" href="group__codec.html#gac1b91e04698c1bd4c0a2b8aa85b08cd2" title="vpx_codec_control wrapper macro">vpx_codec_control</a> (&codec, <a class="code" href="group__vp8__encoder.html#gga6deae3d561c838952552c3d3756322eca09c69ff4a3aabdb307d4f24027dfc4c1" title="Max data rate for Intra frames.">VP8E_SET_MAX_INTRA_BITRATE_PCT</a>, 600);
<a name="l00419"></a>00419
<a name="l00420"></a>00420 frame_avail = 1;
<a name="l00421"></a>00421 <span class="keywordflow">while</span> (frame_avail || got_data) {
<a name="l00422"></a>00422 <a class="code" href="group__codec.html#ga6ea348f76b1f8a1fe50e14db684146c6" title="Iterator.">vpx_codec_iter_t</a> iter = NULL;
<a name="l00423"></a>00423 <span class="keyword">const</span> <a class="code" href="structvpx__codec__cx__pkt.html" title="Encoder output packet.">vpx_codec_cx_pkt_t</a> *pkt;
<a name="l00424"></a>00424
<a name="l00425"></a>00425 flags = layer_flags[frame_cnt % cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a>];
<a name="l00426"></a>00426
<a name="l00427"></a>00427 frame_avail = read_frame(infile, &raw);
<a name="l00428"></a>00428 <span class="keywordflow">if</span> (<a class="code" href="group__encoder.html#gaf990542e2aeb389f05fae3e9c7803639" title="Encode a frame.">vpx_codec_encode</a>(&codec, frame_avail? &raw : NULL, pts,
<a name="l00429"></a>00429 1, flags, <a class="code" href="group__encoder.html#ga04253cc9ec1146d72fa8bb86bcf32144">VPX_DL_REALTIME</a>))
<a name="l00430"></a>00430 die_codec(&codec, <span class="stringliteral">"Failed to encode frame"</span>);
<a name="l00431"></a>00431
<a name="l00432"></a>00432 <span class="comment">// Reset KF flag</span>
<a name="l00433"></a>00433 layer_flags[0] &= ~<a class="code" href="group__encoder.html#ga4c4f4e3cbb5225d2c6c050e2d1e948fa">VPX_EFLAG_FORCE_KF</a>;
<a name="l00434"></a>00434
<a name="l00435"></a>00435 got_data = 0;
<a name="l00436"></a>00436 <span class="keywordflow">while</span> ( (pkt = <a class="code" href="group__encoder.html#gae81cab25d66cf3bc59f1f75f8a5af720" title="Encoded data iterator.">vpx_codec_get_cx_data</a>(&codec, &iter)) ) {
<a name="l00437"></a>00437 got_data = 1;
<a name="l00438"></a>00438 <span class="keywordflow">switch</span> (pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a41f395b39516343c1329a4a85a0084f2">kind</a>) {
<a name="l00439"></a>00439 <span class="keywordflow">case</span> <a class="code" href="group__encoder.html#gga28a79375279536526552af3a83d2ed72a2261aae5594289400e812fb1e6b6b0cc">VPX_CODEC_CX_FRAME_PKT</a>:
<a name="l00440"></a>00440 <span class="keywordflow">for</span> (i=cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4d105d2470dbfb7210b33d298f1cf1f6" title="Template defining the membership of frames to coding layers.">ts_layer_id</a>[frame_cnt % cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a4ec338780115dd270acf0dac24193474" title="Length of the sequence defining frame layer membership.">ts_periodicity</a>];
<a name="l00441"></a>00441 i<cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a>; i++)
<a name="l00442"></a>00442 {
<a name="l00443"></a>00443 write_ivf_frame_header(outfile[i], pkt);
<a name="l00444"></a>00444 <span class="keywordflow">if</span> (fwrite(pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a7f97b060a23b7e89fe5b885c0074f696">data</a>.<a class="code" href="structvpx__codec__cx__pkt.html#a81e33bf4408a3983abb16492fee359ff">frame</a>.buf, 1, pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a7f97b060a23b7e89fe5b885c0074f696">data</a>.<a class="code" href="structvpx__codec__cx__pkt.html#a81e33bf4408a3983abb16492fee359ff">frame</a>.sz,
<a name="l00445"></a>00445 outfile[i]));
<a name="l00446"></a>00446 frames_in_layer[i]++;
<a name="l00447"></a>00447 }
<a name="l00448"></a>00448 <span class="keywordflow">break</span>;
<a name="l00449"></a>00449 <span class="keywordflow">default</span>:
<a name="l00450"></a>00450 <span class="keywordflow">break</span>;
<a name="l00451"></a>00451 }
<a name="l00452"></a>00452 printf (pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a41f395b39516343c1329a4a85a0084f2">kind</a> == <a class="code" href="group__encoder.html#gga28a79375279536526552af3a83d2ed72a2261aae5594289400e812fb1e6b6b0cc">VPX_CODEC_CX_FRAME_PKT</a>
<a name="l00453"></a>00453 && (pkt-><a class="code" href="structvpx__codec__cx__pkt.html#a7f97b060a23b7e89fe5b885c0074f696">data</a>.<a class="code" href="structvpx__codec__cx__pkt.html#a81e33bf4408a3983abb16492fee359ff">frame</a>.flags & <a class="code" href="group__encoder.html#ga7a896eb3bc74f33419e6a9812c60e4c9">VPX_FRAME_IS_KEY</a>)? <span class="stringliteral">"K"</span>:<span class="stringliteral">"."</span>);
<a name="l00454"></a>00454 fflush (stdout);
<a name="l00455"></a>00455 }
<a name="l00456"></a>00456 frame_cnt++;
<a name="l00457"></a>00457 pts += frame_duration;
<a name="l00458"></a>00458 }
<a name="l00459"></a>00459 printf (<span class="stringliteral">"\n"</span>);
<a name="l00460"></a>00460 fclose (infile);
<a name="l00461"></a>00461
<a name="l00462"></a>00462 printf (<span class="stringliteral">"Processed %d frames.\n"</span>,frame_cnt-1);
<a name="l00463"></a>00463 <span class="keywordflow">if</span> (<a class="code" href="group__codec.html#ga6ae21d96909660d0ac978b59a863f53b" title="Destroy a codec instance.">vpx_codec_destroy</a>(&codec))
<a name="l00464"></a>00464 die_codec (&codec, <span class="stringliteral">"Failed to destroy codec"</span>);
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="comment">// Try to rewrite the output file headers with the actual frame count</span>
<a name="l00467"></a>00467 <span class="keywordflow">for</span> (i=0; i<cfg.<a class="code" href="structvpx__codec__enc__cfg.html#a16d4549a30cbd585e3c3056ef873d8c7" title="Number of coding layers.">ts_number_layers</a>; i++)
<a name="l00468"></a>00468 {
<a name="l00469"></a>00469 <span class="keywordflow">if</span> (!fseek(outfile[i], 0, SEEK_SET))
<a name="l00470"></a>00470 write_ivf_file_header (outfile[i], &cfg, frames_in_layer[i]);
<a name="l00471"></a>00471 fclose (outfile[i]);
<a name="l00472"></a>00472 }
<a name="l00473"></a>00473
<a name="l00474"></a>00474 <span class="keywordflow">return</span> EXIT_SUCCESS;
<a name="l00475"></a>00475 }
<a name="l00476"></a>00476
</pre></div> </div></div>
<hr class="footer"/><address class="footer"><small>Generated on Mon Jan 30 2012 for WebM VP8 Codec SDK by 
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address>
</body>
</html>
