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  5. <title>WebM VP8 Codec SDK: vpxenc</title>
    6. 

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  14.       <li><a href="index.html"><span>Main&nbsp;Page</span></a></li>
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  21.   <div class="navpath"><a class="el" href="samples.html">Sample Code</a>
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    24. 

  24. <div class="contents">
    25. 

  25. 

  26. 

  27. <h1><a class="anchor" id="example_vpxenc">vpxenc </a></h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
    28. 

  28. <a name="l00002"></a>00002 <span class="comment"> *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.</span>
    29. 

  29. <a name="l00003"></a>00003 <span class="comment"> *</span>
    30. 

  30. <a name="l00004"></a>00004 <span class="comment"> *  Use of this source code is governed by a BSD-style license</span>
    31. 

  31. <a name="l00005"></a>00005 <span class="comment"> *  that can be found in the LICENSE file in the root of the source</span>
    32. 

  32. <a name="l00006"></a>00006 <span class="comment"> *  tree. An additional intellectual property rights grant can be found</span>
    33. 

  33. <a name="l00007"></a>00007 <span class="comment"> *  in the file PATENTS.  All contributing project authors may</span>
    34. 

  34. <a name="l00008"></a>00008 <span class="comment"> *  be found in the AUTHORS file in the root of the source tree.</span>
    35. 

  35. <a name="l00009"></a>00009 <span class="comment"> */</span>
    36. 

  36. <a name="l00010"></a>00010 
    37. 

  37. <a name="l00011"></a>00011 
    38. 

  38. <a name="l00012"></a>00012 <span class="comment">/* This is a simple program that encodes YV12 files and generates ivf</span>
    39. 

  39. <a name="l00013"></a>00013 <span class="comment"> * files using the new interface.</span>
    40. 

  40. <a name="l00014"></a>00014 <span class="comment"> */</span>
    41. 

  41. <a name="l00015"></a>00015 <span class="preprocessor">#if defined(_WIN32) || !CONFIG_OS_SUPPORT</span>
    42. 

  42. <a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#define USE_POSIX_MMAP 0</span>
    43. 

  43. <a name="l00017"></a>00017 <span class="preprocessor"></span><span class="preprocessor">#else</span>
    44. 

  44. <a name="l00018"></a>00018 <span class="preprocessor"></span><span class="preprocessor">#define USE_POSIX_MMAP 1</span>
    45. 

  45. <a name="l00019"></a>00019 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    46. 

  46. <a name="l00020"></a>00020 <span class="preprocessor"></span>
    47. 

  47. <a name="l00021"></a>00021 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
    48. 

  48. <a name="l00022"></a>00022 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
    49. 

  49. <a name="l00023"></a>00023 <span class="preprocessor">#include &lt;stdarg.h&gt;</span>
    50. 

  50. <a name="l00024"></a>00024 <span class="preprocessor">#include &lt;string.h&gt;</span>
    51. 

  51. <a name="l00025"></a>00025 <span class="preprocessor">#include &lt;limits.h&gt;</span>
    52. 

  52. <a name="l00026"></a>00026 <span class="preprocessor">#include &lt;assert.h&gt;</span>
    53. 

  53. <a name="l00027"></a>00027 <span class="preprocessor">#include &quot;<a class="code" href="vpx__encoder_8h.html" title="Describes the encoder algorithm interface to applications.">vpx/vpx_encoder.h</a>&quot;</span>
    54. 

  54. <a name="l00028"></a>00028 <span class="preprocessor">#if USE_POSIX_MMAP</span>
    55. 

  55. <a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#include &lt;sys/types.h&gt;</span>
    56. 

  56. <a name="l00030"></a>00030 <span class="preprocessor">#include &lt;sys/stat.h&gt;</span>
    57. 

  57. <a name="l00031"></a>00031 <span class="preprocessor">#include &lt;sys/mman.h&gt;</span>
    58. 

  58. <a name="l00032"></a>00032 <span class="preprocessor">#include &lt;fcntl.h&gt;</span>
    59. 

  59. <a name="l00033"></a>00033 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
    60. 

  60. <a name="l00034"></a>00034 <span class="preprocessor">#endif</span>
    61. 

  61. <a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#include &quot;vpx_version.h&quot;</span>
    62. 

  62. <a name="l00036"></a>00036 <span class="preprocessor">#include &quot;<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>&quot;</span>
    63. 

  63. <a name="l00037"></a>00037 <span class="preprocessor">#include &quot;vpx_ports/mem_ops.h&quot;</span>
    64. 

  64. <a name="l00038"></a>00038 <span class="preprocessor">#include &quot;vpx_ports/vpx_timer.h&quot;</span>
    65. 

  65. <a name="l00039"></a>00039 <span class="preprocessor">#include &quot;tools_common.h&quot;</span>
    66. 

  66. <a name="l00040"></a>00040 <span class="preprocessor">#include &quot;y4minput.h&quot;</span>
    67. 

  67. <a name="l00041"></a>00041 <span class="preprocessor">#include &quot;libmkv/EbmlWriter.h&quot;</span>
    68. 

  68. <a name="l00042"></a>00042 <span class="preprocessor">#include &quot;libmkv/EbmlIDs.h&quot;</span>
    69. 

  69. <a name="l00043"></a>00043 
    70. 

  70. <a name="l00044"></a>00044 <span class="comment">/* Need special handling of these functions on Windows */</span>
    71. 

  71. <a name="l00045"></a>00045 <span class="preprocessor">#if defined(_MSC_VER)</span>
    72. 

  72. <a name="l00046"></a>00046 <span class="preprocessor"></span><span class="comment">/* MSVS doesn&apos;t define off_t, and uses _f{seek,tell}i64 */</span>
    73. 

  73. <a name="l00047"></a>00047 <span class="keyword">typedef</span> __int64 off_t;
    74. 

  74. <a name="l00048"></a>00048 <span class="preprocessor">#define fseeko _fseeki64</span>
    75. 

  75. <a name="l00049"></a>00049 <span class="preprocessor"></span><span class="preprocessor">#define ftello _ftelli64</span>
    76. 

  76. <a name="l00050"></a>00050 <span class="preprocessor"></span><span class="preprocessor">#elif defined(_WIN32)</span>
    77. 

  77. <a name="l00051"></a>00051 <span class="preprocessor"></span><span class="comment">/* MinGW defines off_t, and uses f{seek,tell}o64 */</span>
    78. 

  78. <a name="l00052"></a>00052 <span class="preprocessor">#define fseeko fseeko64</span>
    79. 

  79. <a name="l00053"></a>00053 <span class="preprocessor"></span><span class="preprocessor">#define ftello ftello64</span>
    80. 

  80. <a name="l00054"></a>00054 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    81. 

  81. <a name="l00055"></a>00055 <span class="preprocessor"></span>
    82. 

  82. <a name="l00056"></a>00056 <span class="preprocessor">#if defined(_MSC_VER)</span>
    83. 

  83. <a name="l00057"></a>00057 <span class="preprocessor"></span><span class="preprocessor">#define LITERALU64(n) n</span>
    84. 

  84. <a name="l00058"></a>00058 <span class="preprocessor"></span><span class="preprocessor">#else</span>
    85. 

  85. <a name="l00059"></a>00059 <span class="preprocessor"></span><span class="preprocessor">#define LITERALU64(n) n##LLU</span>
    86. 

  86. <a name="l00060"></a>00060 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    87. 

  87. <a name="l00061"></a>00061 <span class="preprocessor"></span>
    88. 

  88. <a name="l00062"></a>00062 <span class="comment">/* We should use 32-bit file operations in WebM file format</span>
    89. 

  89. <a name="l00063"></a>00063 <span class="comment"> * when building ARM executable file (.axf) with RVCT */</span>
    90. 

  90. <a name="l00064"></a>00064 <span class="preprocessor">#if !CONFIG_OS_SUPPORT</span>
    91. 

  91. <a name="l00065"></a>00065 <span class="preprocessor"></span><span class="keyword">typedef</span> <span class="keywordtype">long</span> off_t;
    92. 

  92. <a name="l00066"></a>00066 <span class="preprocessor">#define fseeko fseek</span>
    93. 

  93. <a name="l00067"></a>00067 <span class="preprocessor"></span><span class="preprocessor">#define ftello ftell</span>
    94. 

  94. <a name="l00068"></a>00068 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
    95. 

  95. <a name="l00069"></a>00069 <span class="preprocessor"></span>
    96. 

  96. <a name="l00070"></a>00070 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *exec_name;
    97. 

  97. <a name="l00071"></a>00071 
    98. 

  98. <a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>codec_item
    99. 

  99. <a name="l00073"></a>00073 {
    100. 

  100. <a name="l00074"></a>00074     <span class="keywordtype">char</span> <span class="keyword">const</span>              *name;
    101. 

  101. <a name="l00075"></a>00075     <span class="keyword">const</span> <a class="code" href="group__codec.html#gad654f3da60151f5dfef70aca00ef1e9e" title="Codec interface structure.">vpx_codec_iface_t</a> *iface;
    102. 

  102. <a name="l00076"></a>00076     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>             fourcc;
    103. 

  103. <a name="l00077"></a>00077 } codecs[] =
    104. 

  104. <a name="l00078"></a>00078 {
    105. 

  105. <a name="l00079"></a>00079 <span class="preprocessor">#if CONFIG_VP8_ENCODER</span>
    106. 

  106. <a name="l00080"></a>00080 <span class="preprocessor"></span>    {<span class="stringliteral">&quot;vp8&quot;</span>,  &amp;vpx_codec_vp8_cx_algo, 0x30385056},
    107. 

  107. <a name="l00081"></a>00081 <span class="preprocessor">#endif</span>
    108. 

  108. <a name="l00082"></a>00082 <span class="preprocessor"></span>};
    109. 

  109. <a name="l00083"></a>00083 
    110. 

  110. <a name="l00084"></a>00084 <span class="keyword">static</span> <span class="keywordtype">void</span> usage_exit();
    111. 

  111. <a name="l00085"></a>00085 
    112. 

  112. <a name="l00086"></a>00086 <span class="keywordtype">void</span> die(<span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...)
    113. 

  113. <a name="l00087"></a>00087 {
    114. 

  114. <a name="l00088"></a>00088     va_list ap;
    115. 

  115. <a name="l00089"></a>00089     va_start(ap, fmt);
    116. 

  116. <a name="l00090"></a>00090     vfprintf(stderr, fmt, ap);
    117. 

  117. <a name="l00091"></a>00091     fprintf(stderr, <span class="stringliteral">&quot;\n&quot;</span>);
    118. 

  118. <a name="l00092"></a>00092     usage_exit();
    119. 

  119. <a name="l00093"></a>00093 }
    120. 

  120. <a name="l00094"></a>00094 
    121. 

  121. <a name="l00095"></a>00095 <span class="keyword">static</span> <span class="keywordtype">void</span> ctx_exit_on_error(<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)
    122. 

  122. <a name="l00096"></a>00096 {
    123. 

  123. <a name="l00097"></a>00097     <span class="keywordflow">if</span> (ctx-&gt;<a class="code" href="structvpx__codec__ctx.html#a6f448802b0675013fd8c5179675c30de">err</a>)
    124. 

  124. <a name="l00098"></a>00098     {
    125. 

  125. <a name="l00099"></a>00099         <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);
    126. 

  126. <a name="l00100"></a>00100 
    127. 

  127. <a name="l00101"></a>00101         fprintf(stderr, <span class="stringliteral">&quot;%s: %s\n&quot;</span>, s, <a class="code" href="group__codec.html#ga4d265df00d42b36a4f0e3eb83fc22c5e" title="Retrieve error synopsis for codec context.">vpx_codec_error</a>(ctx));
    128. 

  128. <a name="l00102"></a>00102 
    129. 

  129. <a name="l00103"></a>00103         <span class="keywordflow">if</span> (detail)
    130. 

  130. <a name="l00104"></a>00104             fprintf(stderr, <span class="stringliteral">&quot;    %s\n&quot;</span>, detail);
    131. 

  131. <a name="l00105"></a>00105 
    132. 

  132. <a name="l00106"></a>00106         exit(EXIT_FAILURE);
    133. 

  133. <a name="l00107"></a>00107     }
    134. 

  134. <a name="l00108"></a>00108 }
    135. 

  135. <a name="l00109"></a>00109 
    136. 

  136. <a name="l00110"></a>00110 <span class="comment">/* This structure is used to abstract the different ways of handling</span>
    137. 

  137. <a name="l00111"></a>00111 <span class="comment"> * first pass statistics.</span>
    138. 

  138. <a name="l00112"></a>00112 <span class="comment"> */</span>
    139. 

  139. <a name="l00113"></a>00113 <span class="keyword">typedef</span> <span class="keyword">struct</span>
    140. 

  140. <a name="l00114"></a>00114 {
    141. 

  141. <a name="l00115"></a>00115     <a class="code" href="structvpx__fixed__buf.html" title="Generic fixed size buffer structure.">vpx_fixed_buf_t</a> buf;
    142. 

  142. <a name="l00116"></a>00116     <span class="keywordtype">int</span>             pass;
    143. 

  143. <a name="l00117"></a>00117     FILE           *file;
    144. 

  144. <a name="l00118"></a>00118     <span class="keywordtype">char</span>           *buf_ptr;
    145. 

  145. <a name="l00119"></a>00119     <span class="keywordtype">size_t</span>          buf_alloc_sz;
    146. 

  146. <a name="l00120"></a>00120 } stats_io_t;
    147. 

  147. <a name="l00121"></a>00121 
    148. 

  148. <a name="l00122"></a>00122 <span class="keywordtype">int</span> stats_open_file(stats_io_t *stats, <span class="keyword">const</span> <span class="keywordtype">char</span> *fpf, <span class="keywordtype">int</span> pass)
    149. 

  149. <a name="l00123"></a>00123 {
    150. 

  150. <a name="l00124"></a>00124     <span class="keywordtype">int</span> res;
    151. 

  151. <a name="l00125"></a>00125 
    152. 

  152. <a name="l00126"></a>00126     stats-&gt;pass = pass;
    153. 

  153. <a name="l00127"></a>00127 
    154. 

  154. <a name="l00128"></a>00128     <span class="keywordflow">if</span> (pass == 0)
    155. 

  155. <a name="l00129"></a>00129     {
    156. 

  156. <a name="l00130"></a>00130         stats-&gt;file = fopen(fpf, <span class="stringliteral">&quot;wb&quot;</span>);
    157. 

  157. <a name="l00131"></a>00131         stats-&gt;buf.sz = 0;
    158. 

  158. <a name="l00132"></a>00132         stats-&gt;buf.buf = NULL,
    159. 

  159. <a name="l00133"></a>00133                    res = (stats-&gt;file != NULL);
    160. 

  160. <a name="l00134"></a>00134     }
    161. 

  161. <a name="l00135"></a>00135     <span class="keywordflow">else</span>
    162. 

  162. <a name="l00136"></a>00136     {
    163. 

  163. <a name="l00137"></a>00137 <span class="preprocessor">#if 0</span>
    164. 

  164. <a name="l00138"></a>00138 <span class="preprocessor"></span><span class="preprocessor">#elif USE_POSIX_MMAP</span>
    165. 

  165. <a name="l00139"></a>00139 <span class="preprocessor"></span>        <span class="keyword">struct </span>stat stat_buf;
    166. 

  166. <a name="l00140"></a>00140         <span class="keywordtype">int</span> fd;
    167. 

  167. <a name="l00141"></a>00141 
    168. 

  168. <a name="l00142"></a>00142         fd = open(fpf, O_RDONLY);
    169. 

  169. <a name="l00143"></a>00143         stats-&gt;file = fdopen(fd, <span class="stringliteral">&quot;rb&quot;</span>);
    170. 

  170. <a name="l00144"></a>00144         fstat(fd, &amp;stat_buf);
    171. 

  171. <a name="l00145"></a>00145         stats-&gt;buf.sz = stat_buf.st_size;
    172. 

  172. <a name="l00146"></a>00146         stats-&gt;buf.buf = mmap(NULL, stats-&gt;buf.sz, PROT_READ, MAP_PRIVATE,
    173. 

  173. <a name="l00147"></a>00147                               fd, 0);
    174. 

  174. <a name="l00148"></a>00148         res = (stats-&gt;buf.buf != NULL);
    175. 

  175. <a name="l00149"></a>00149 <span class="preprocessor">#else</span>
    176. 

  176. <a name="l00150"></a>00150 <span class="preprocessor"></span>        <span class="keywordtype">size_t</span> nbytes;
    177. 

  177. <a name="l00151"></a>00151 
    178. 

  178. <a name="l00152"></a>00152         stats-&gt;file = fopen(fpf, <span class="stringliteral">&quot;rb&quot;</span>);
    179. 

  179. <a name="l00153"></a>00153 
    180. 

  180. <a name="l00154"></a>00154         <span class="keywordflow">if</span> (fseek(stats-&gt;file, 0, SEEK_END))
    181. 

  181. <a name="l00155"></a>00155         {
    182. 

  182. <a name="l00156"></a>00156             fprintf(stderr, <span class="stringliteral">&quot;First-pass stats file must be seekable!\n&quot;</span>);
    183. 

  183. <a name="l00157"></a>00157             exit(EXIT_FAILURE);
    184. 

  184. <a name="l00158"></a>00158         }
    185. 

  185. <a name="l00159"></a>00159 
    186. 

  186. <a name="l00160"></a>00160         stats-&gt;buf.sz = stats-&gt;buf_alloc_sz = ftell(stats-&gt;file);
    187. 

  187. <a name="l00161"></a>00161         rewind(stats-&gt;file);
    188. 

  188. <a name="l00162"></a>00162 
    189. 

  189. <a name="l00163"></a>00163         stats-&gt;buf.buf = malloc(stats-&gt;buf_alloc_sz);
    190. 

  190. <a name="l00164"></a>00164 
    191. 

  191. <a name="l00165"></a>00165         <span class="keywordflow">if</span> (!stats-&gt;buf.buf)
    192. 

  192. <a name="l00166"></a>00166         {
    193. 

  193. <a name="l00167"></a>00167             fprintf(stderr, <span class="stringliteral">&quot;Failed to allocate first-pass stats buffer (%lu bytes)\n&quot;</span>,
    194. 

  194. <a name="l00168"></a>00168                     (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>)stats-&gt;buf_alloc_sz);
    195. 

  195. <a name="l00169"></a>00169             exit(EXIT_FAILURE);
    196. 

  196. <a name="l00170"></a>00170         }
    197. 

  197. <a name="l00171"></a>00171 
    198. 

  198. <a name="l00172"></a>00172         nbytes = fread(stats-&gt;buf.buf, 1, stats-&gt;buf.sz, stats-&gt;file);
    199. 

  199. <a name="l00173"></a>00173         res = (nbytes == stats-&gt;buf.sz);
    200. 

  200. <a name="l00174"></a>00174 <span class="preprocessor">#endif</span>
    201. 

  201. <a name="l00175"></a>00175 <span class="preprocessor"></span>    }
    202. 

  202. <a name="l00176"></a>00176 
    203. 

  203. <a name="l00177"></a>00177     <span class="keywordflow">return</span> res;
    204. 

  204. <a name="l00178"></a>00178 }
    205. 

  205. <a name="l00179"></a>00179 
    206. 

  206. <a name="l00180"></a>00180 <span class="keywordtype">int</span> stats_open_mem(stats_io_t *stats, <span class="keywordtype">int</span> pass)
    207. 

  207. <a name="l00181"></a>00181 {
    208. 

  208. <a name="l00182"></a>00182     <span class="keywordtype">int</span> res;
    209. 

  209. <a name="l00183"></a>00183     stats-&gt;pass = pass;
    210. 

  210. <a name="l00184"></a>00184 
    211. 

  211. <a name="l00185"></a>00185     <span class="keywordflow">if</span> (!pass)
    212. 

  212. <a name="l00186"></a>00186     {
    213. 

  213. <a name="l00187"></a>00187         stats-&gt;buf.sz = 0;
    214. 

  214. <a name="l00188"></a>00188         stats-&gt;buf_alloc_sz = 64 * 1024;
    215. 

  215. <a name="l00189"></a>00189         stats-&gt;buf.buf = malloc(stats-&gt;buf_alloc_sz);
    216. 

  216. <a name="l00190"></a>00190     }
    217. 

  217. <a name="l00191"></a>00191 
    218. 

  218. <a name="l00192"></a>00192     stats-&gt;buf_ptr = stats-&gt;buf.buf;
    219. 

  219. <a name="l00193"></a>00193     res = (stats-&gt;buf.buf != NULL);
    220. 

  220. <a name="l00194"></a>00194     <span class="keywordflow">return</span> res;
    221. 

  221. <a name="l00195"></a>00195 }
    222. 

  222. <a name="l00196"></a>00196 
    223. 

  223. <a name="l00197"></a>00197 
    224. 

  224. <a name="l00198"></a>00198 <span class="keywordtype">void</span> stats_close(stats_io_t *stats, <span class="keywordtype">int</span> last_pass)
    225. 

  225. <a name="l00199"></a>00199 {
    226. 

  226. <a name="l00200"></a>00200     <span class="keywordflow">if</span> (stats-&gt;file)
    227. 

  227. <a name="l00201"></a>00201     {
    228. 

  228. <a name="l00202"></a>00202         <span class="keywordflow">if</span> (stats-&gt;pass == last_pass)
    229. 

  229. <a name="l00203"></a>00203         {
    230. 

  230. <a name="l00204"></a>00204 <span class="preprocessor">#if 0</span>
    231. 

  231. <a name="l00205"></a>00205 <span class="preprocessor"></span><span class="preprocessor">#elif USE_POSIX_MMAP</span>
    232. 

  232. <a name="l00206"></a>00206 <span class="preprocessor"></span>            munmap(stats-&gt;buf.buf, stats-&gt;buf.sz);
    233. 

  233. <a name="l00207"></a>00207 <span class="preprocessor">#else</span>
    234. 

  234. <a name="l00208"></a>00208 <span class="preprocessor"></span>            free(stats-&gt;buf.buf);
    235. 

  235. <a name="l00209"></a>00209 <span class="preprocessor">#endif</span>
    236. 

  236. <a name="l00210"></a>00210 <span class="preprocessor"></span>        }
    237. 

  237. <a name="l00211"></a>00211 
    238. 

  238. <a name="l00212"></a>00212         fclose(stats-&gt;file);
    239. 

  239. <a name="l00213"></a>00213         stats-&gt;file = NULL;
    240. 

  240. <a name="l00214"></a>00214     }
    241. 

  241. <a name="l00215"></a>00215     <span class="keywordflow">else</span>
    242. 

  242. <a name="l00216"></a>00216     {
    243. 

  243. <a name="l00217"></a>00217         <span class="keywordflow">if</span> (stats-&gt;pass == last_pass)
    244. 

  244. <a name="l00218"></a>00218             free(stats-&gt;buf.buf);
    245. 

  245. <a name="l00219"></a>00219     }
    246. 

  246. <a name="l00220"></a>00220 }
    247. 

  247. <a name="l00221"></a>00221 
    248. 

  248. <a name="l00222"></a>00222 <span class="keywordtype">void</span> stats_write(stats_io_t *stats, <span class="keyword">const</span> <span class="keywordtype">void</span> *pkt, <span class="keywordtype">size_t</span> len)
    249. 

  249. <a name="l00223"></a>00223 {
    250. 

  250. <a name="l00224"></a>00224     <span class="keywordflow">if</span> (stats-&gt;file)
    251. 

  251. <a name="l00225"></a>00225     {
    252. 

  252. <a name="l00226"></a>00226         <span class="keywordflow">if</span>(fwrite(pkt, 1, len, stats-&gt;file));
    253. 

  253. <a name="l00227"></a>00227     }
    254. 

  254. <a name="l00228"></a>00228     <span class="keywordflow">else</span>
    255. 

  255. <a name="l00229"></a>00229     {
    256. 

  256. <a name="l00230"></a>00230         <span class="keywordflow">if</span> (stats-&gt;buf.sz + len &gt; stats-&gt;buf_alloc_sz)
    257. 

  257. <a name="l00231"></a>00231         {
    258. 

  258. <a name="l00232"></a>00232             <span class="keywordtype">size_t</span>  new_sz = stats-&gt;buf_alloc_sz + 64 * 1024;
    259. 

  259. <a name="l00233"></a>00233             <span class="keywordtype">char</span>   *new_ptr = realloc(stats-&gt;buf.buf, new_sz);
    260. 

  260. <a name="l00234"></a>00234 
    261. 

  261. <a name="l00235"></a>00235             <span class="keywordflow">if</span> (new_ptr)
    262. 

  262. <a name="l00236"></a>00236             {
    263. 

  263. <a name="l00237"></a>00237                 stats-&gt;buf_ptr = new_ptr + (stats-&gt;buf_ptr - (<span class="keywordtype">char</span> *)stats-&gt;buf.buf);
    264. 

  264. <a name="l00238"></a>00238                 stats-&gt;buf.buf = new_ptr;
    265. 

  265. <a name="l00239"></a>00239                 stats-&gt;buf_alloc_sz = new_sz;
    266. 

  266. <a name="l00240"></a>00240             }
    267. 

  267. <a name="l00241"></a>00241             <span class="keywordflow">else</span>
    268. 

  268. <a name="l00242"></a>00242             {
    269. 

  269. <a name="l00243"></a>00243                 fprintf(stderr,
    270. 

  270. <a name="l00244"></a>00244                         <span class="stringliteral">&quot;\nFailed to realloc firstpass stats buffer.\n&quot;</span>);
    271. 

  271. <a name="l00245"></a>00245                 exit(EXIT_FAILURE);
    272. 

  272. <a name="l00246"></a>00246             }
    273. 

  273. <a name="l00247"></a>00247         }
    274. 

  274. <a name="l00248"></a>00248 
    275. 

  275. <a name="l00249"></a>00249         memcpy(stats-&gt;buf_ptr, pkt, len);
    276. 

  276. <a name="l00250"></a>00250         stats-&gt;buf.sz += len;
    277. 

  277. <a name="l00251"></a>00251         stats-&gt;buf_ptr += len;
    278. 

  278. <a name="l00252"></a>00252     }
    279. 

  279. <a name="l00253"></a>00253 }
    280. 

  280. <a name="l00254"></a>00254 
    281. 

  281. <a name="l00255"></a>00255 <a class="code" href="structvpx__fixed__buf.html" title="Generic fixed size buffer structure.">vpx_fixed_buf_t</a> stats_get(stats_io_t *stats)
    282. 

  282. <a name="l00256"></a>00256 {
    283. 

  283. <a name="l00257"></a>00257     <span class="keywordflow">return</span> stats-&gt;buf;
    284. 

  284. <a name="l00258"></a>00258 }
    285. 

  285. <a name="l00259"></a>00259 
    286. 

  286. <a name="l00260"></a>00260 <span class="comment">/* Stereo 3D packed frame format */</span>
    287. 

  287. <a name="l00261"></a>00261 <span class="keyword">typedef</span> <span class="keyword">enum</span> stereo_format
    288. 

  288. <a name="l00262"></a>00262 {
    289. 

  289. <a name="l00263"></a>00263     STEREO_FORMAT_MONO       = 0,
    290. 

  290. <a name="l00264"></a>00264     STEREO_FORMAT_LEFT_RIGHT = 1,
    291. 

  291. <a name="l00265"></a>00265     STEREO_FORMAT_BOTTOM_TOP = 2,
    292. 

  292. <a name="l00266"></a>00266     STEREO_FORMAT_TOP_BOTTOM = 3,
    293. 

  293. <a name="l00267"></a>00267     STEREO_FORMAT_RIGHT_LEFT = 11
    294. 

  294. <a name="l00268"></a>00268 } stereo_format_t;
    295. 

  295. <a name="l00269"></a>00269 
    296. 

  296. <a name="l00270"></a>00270 <span class="keyword">enum</span> video_file_type
    297. 

  297. <a name="l00271"></a>00271 {
    298. 

  298. <a name="l00272"></a>00272     FILE_TYPE_RAW,
    299. 

  299. <a name="l00273"></a>00273     FILE_TYPE_IVF,
    300. 

  300. <a name="l00274"></a>00274     FILE_TYPE_Y4M
    301. 

  301. <a name="l00275"></a>00275 };
    302. 

  302. <a name="l00276"></a>00276 
    303. 

  303. <a name="l00277"></a>00277 <span class="keyword">struct </span>detect_buffer {
    304. 

  304. <a name="l00278"></a>00278     <span class="keywordtype">char</span> buf[4];
    305. 

  305. <a name="l00279"></a>00279     <span class="keywordtype">size_t</span> buf_read;
    306. 

  306. <a name="l00280"></a>00280     <span class="keywordtype">size_t</span> position;
    307. 

  307. <a name="l00281"></a>00281 };
    308. 

  308. <a name="l00282"></a>00282 
    309. 

  309. <a name="l00283"></a>00283 
    310. 

  310. <a name="l00284"></a>00284 <span class="preprocessor">#define IVF_FRAME_HDR_SZ (4+8) </span><span class="comment">/* 4 byte size + 8 byte timestamp */</span>
    311. 

  311. <a name="l00285"></a>00285 <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, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> file_type,
    312. 

  312. <a name="l00286"></a>00286                       y4m_input *y4m, <span class="keyword">struct</span> detect_buffer *detect)
    313. 

  313. <a name="l00287"></a>00287 {
    314. 

  314. <a name="l00288"></a>00288     <span class="keywordtype">int</span> plane = 0;
    315. 

  315. <a name="l00289"></a>00289     <span class="keywordtype">int</span> shortread = 0;
    316. 

  316. <a name="l00290"></a>00290 
    317. 

  317. <a name="l00291"></a>00291     <span class="keywordflow">if</span> (file_type == FILE_TYPE_Y4M)
    318. 

  318. <a name="l00292"></a>00292     {
    319. 

  319. <a name="l00293"></a>00293         <span class="keywordflow">if</span> (y4m_input_fetch_frame(y4m, f, img) &lt; 1)
    320. 

  320. <a name="l00294"></a>00294            <span class="keywordflow">return</span> 0;
    321. 

  321. <a name="l00295"></a>00295     }
    322. 

  322. <a name="l00296"></a>00296     <span class="keywordflow">else</span>
    323. 

  323. <a name="l00297"></a>00297     {
    324. 

  324. <a name="l00298"></a>00298         <span class="keywordflow">if</span> (file_type == FILE_TYPE_IVF)
    325. 

  325. <a name="l00299"></a>00299         {
    326. 

  326. <a name="l00300"></a>00300             <span class="keywordtype">char</span> junk[IVF_FRAME_HDR_SZ];
    327. 

  327. <a name="l00301"></a>00301 
    328. 

  328. <a name="l00302"></a>00302             <span class="comment">/* Skip the frame header. We know how big the frame should be. See</span>
    329. 

  329. <a name="l00303"></a>00303 <span class="comment">             * write_ivf_frame_header() for documentation on the frame header</span>
    330. 

  330. <a name="l00304"></a>00304 <span class="comment">             * layout.</span>
    331. 

  331. <a name="l00305"></a>00305 <span class="comment">             */</span>
    332. 

  332. <a name="l00306"></a>00306             <span class="keywordflow">if</span>(fread(junk, 1, IVF_FRAME_HDR_SZ, f));
    333. 

  333. <a name="l00307"></a>00307         }
    334. 

  334. <a name="l00308"></a>00308 
    335. 

  335. <a name="l00309"></a>00309         <span class="keywordflow">for</span> (plane = 0; plane &lt; 3; plane++)
    336. 

  336. <a name="l00310"></a>00310         {
    337. 

  337. <a name="l00311"></a>00311             <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *ptr;
    338. 

  338. <a name="l00312"></a>00312             <span class="keywordtype">int</span> w = (plane ? (1 + img-&gt;<a class="code" href="structvpx__image.html#a806bf23143bf00a0b3fdbd6ba030c483">d_w</a>) / 2 : img-&gt;<a class="code" href="structvpx__image.html#a806bf23143bf00a0b3fdbd6ba030c483">d_w</a>);
    339. 

  339. <a name="l00313"></a>00313             <span class="keywordtype">int</span> h = (plane ? (1 + img-&gt;<a class="code" href="structvpx__image.html#a31bc5f045d4f3c2b6bb0f57bb53078e7">d_h</a>) / 2 : img-&gt;<a class="code" href="structvpx__image.html#a31bc5f045d4f3c2b6bb0f57bb53078e7">d_h</a>);
    340. 

  340. <a name="l00314"></a>00314             <span class="keywordtype">int</span> r;
    341. 

  341. <a name="l00315"></a>00315 
    342. 

  342. <a name="l00316"></a>00316             <span class="comment">/* Determine the correct plane based on the image format. The for-loop</span>
    343. 

  343. <a name="l00317"></a>00317 <span class="comment">             * always counts in Y,U,V order, but this may not match the order of</span>
    344. 

  344. <a name="l00318"></a>00318 <span class="comment">             * the data on disk.</span>
    345. 

  345. <a name="l00319"></a>00319 <span class="comment">             */</span>
    346. 

  346. <a name="l00320"></a>00320             <span class="keywordflow">switch</span> (plane)
    347. 

  347. <a name="l00321"></a>00321             {
    348. 

  348. <a name="l00322"></a>00322             <span class="keywordflow">case</span> 1:
    349. 

  349. <a name="l00323"></a>00323                 ptr = img-&gt;<a class="code" href="structvpx__image.html#ab6258308ba7a5f4a113348120e20e2ce">planes</a>[img-&gt;<a class="code" href="structvpx__image.html#a1d734f8afa9200a21c2d9f6bcf8c04d8">fmt</a>==<a class="code" href="vpx__image_8h.html#a7a30a7bff7400fb83ad45fede5077193a6e4e8961bbcf96478c300dc4c3e1dc18">VPX_IMG_FMT_YV12</a>? <a class="code" href="vpx__image_8h.html#aca9436ec761457cc6d2e356e0ac2fd23">VPX_PLANE_V</a> : <a class="code" href="vpx__image_8h.html#a4770fc8fa60021a2229f25553152cf81">VPX_PLANE_U</a>];
    350. 

  350. <a name="l00324"></a>00324                 <span class="keywordflow">break</span>;
    351. 

  351. <a name="l00325"></a>00325             <span class="keywordflow">case</span> 2:
    352. 

  352. <a name="l00326"></a>00326                 ptr = img-&gt;<a class="code" href="structvpx__image.html#ab6258308ba7a5f4a113348120e20e2ce">planes</a>[img-&gt;<a class="code" href="structvpx__image.html#a1d734f8afa9200a21c2d9f6bcf8c04d8">fmt</a>==<a class="code" href="vpx__image_8h.html#a7a30a7bff7400fb83ad45fede5077193a6e4e8961bbcf96478c300dc4c3e1dc18">VPX_IMG_FMT_YV12</a>?<a class="code" href="vpx__image_8h.html#a4770fc8fa60021a2229f25553152cf81">VPX_PLANE_U</a> : <a class="code" href="vpx__image_8h.html#aca9436ec761457cc6d2e356e0ac2fd23">VPX_PLANE_V</a>];
    353. 

  353. <a name="l00327"></a>00327                 <span class="keywordflow">break</span>;
    354. 

  354. <a name="l00328"></a>00328             <span class="keywordflow">default</span>:
    355. 

  355. <a name="l00329"></a>00329                 ptr = img-&gt;<a class="code" href="structvpx__image.html#ab6258308ba7a5f4a113348120e20e2ce">planes</a>[plane];
    356. 

  356. <a name="l00330"></a>00330             }
    357. 

  357. <a name="l00331"></a>00331 
    358. 

  358. <a name="l00332"></a>00332             <span class="keywordflow">for</span> (r = 0; r &lt; h; r++)
    359. 

  359. <a name="l00333"></a>00333             {
    360. 

  360. <a name="l00334"></a>00334                 <span class="keywordtype">size_t</span> needed = w;
    361. 

  361. <a name="l00335"></a>00335                 <span class="keywordtype">size_t</span> buf_position = 0;
    362. 

  362. <a name="l00336"></a>00336                 <span class="keyword">const</span> <span class="keywordtype">size_t</span> left = detect-&gt;buf_read - detect-&gt;position;
    363. 

  363. <a name="l00337"></a>00337                 <span class="keywordflow">if</span> (left &gt; 0)
    364. 

  364. <a name="l00338"></a>00338                 {
    365. 

  365. <a name="l00339"></a>00339                     <span class="keyword">const</span> <span class="keywordtype">size_t</span> more = (left &lt; needed) ? left : needed;
    366. 

  366. <a name="l00340"></a>00340                     memcpy(ptr, detect-&gt;buf + detect-&gt;position, more);
    367. 

  367. <a name="l00341"></a>00341                     buf_position = more;
    368. 

  368. <a name="l00342"></a>00342                     needed -= more;
    369. 

  369. <a name="l00343"></a>00343                     detect-&gt;position += more;
    370. 

  370. <a name="l00344"></a>00344                 }
    371. 

  371. <a name="l00345"></a>00345                 <span class="keywordflow">if</span> (needed &gt; 0)
    372. 

  372. <a name="l00346"></a>00346                 {
    373. 

  373. <a name="l00347"></a>00347                     shortread |= (fread(ptr + buf_position, 1, needed, f) &lt; needed);
    374. 

  374. <a name="l00348"></a>00348                 }
    375. 

  375. <a name="l00349"></a>00349 
    376. 

  376. <a name="l00350"></a>00350                 ptr += img-&gt;<a class="code" href="structvpx__image.html#ac9c7b83e3eea44cb680956f90dc789cf">stride</a>[plane];
    377. 

  377. <a name="l00351"></a>00351             }
    378. 

  378. <a name="l00352"></a>00352         }
    379. 

  379. <a name="l00353"></a>00353     }
    380. 

  380. <a name="l00354"></a>00354 
    381. 

  381. <a name="l00355"></a>00355     <span class="keywordflow">return</span> !shortread;
    382. 

  382. <a name="l00356"></a>00356 }
    383. 

  383. <a name="l00357"></a>00357 
    384. 

  384. <a name="l00358"></a>00358 
    385. 

  385. <a name="l00359"></a>00359 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> file_is_y4m(FILE      *infile,
    386. 

  386. <a name="l00360"></a>00360                          y4m_input *y4m,
    387. 

  387. <a name="l00361"></a>00361                          <span class="keywordtype">char</span>       detect[4])
    388. 

  388. <a name="l00362"></a>00362 {
    389. 

  389. <a name="l00363"></a>00363     <span class="keywordflow">if</span>(memcmp(detect, <span class="stringliteral">&quot;YUV4&quot;</span>, 4) == 0)
    390. 

  390. <a name="l00364"></a>00364     {
    391. 

  391. <a name="l00365"></a>00365         <span class="keywordflow">return</span> 1;
    392. 

  392. <a name="l00366"></a>00366     }
    393. 

  393. <a name="l00367"></a>00367     <span class="keywordflow">return</span> 0;
    394. 

  394. <a name="l00368"></a>00368 }
    395. 

  395. <a name="l00369"></a>00369 
    396. 

  396. <a name="l00370"></a>00370 <span class="preprocessor">#define IVF_FILE_HDR_SZ (32)</span>
    397. 

  397. <a name="l00371"></a>00371 <span class="preprocessor"></span><span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> file_is_ivf(FILE *infile,
    398. 

  398. <a name="l00372"></a>00372                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *fourcc,
    399. 

  399. <a name="l00373"></a>00373                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *width,
    400. 

  400. <a name="l00374"></a>00374                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> *height,
    401. 

  401. <a name="l00375"></a>00375                          <span class="keyword">struct</span> detect_buffer *detect)
    402. 

  402. <a name="l00376"></a>00376 {
    403. 

  403. <a name="l00377"></a>00377     <span class="keywordtype">char</span> raw_hdr[IVF_FILE_HDR_SZ];
    404. 

  404. <a name="l00378"></a>00378     <span class="keywordtype">int</span> is_ivf = 0;
    405. 

  405. <a name="l00379"></a>00379 
    406. 

  406. <a name="l00380"></a>00380     <span class="keywordflow">if</span>(memcmp(detect-&gt;buf, <span class="stringliteral">&quot;DKIF&quot;</span>, 4) != 0)
    407. 

  407. <a name="l00381"></a>00381         <span class="keywordflow">return</span> 0;
    408. 

  408. <a name="l00382"></a>00382 
    409. 

  409. <a name="l00383"></a>00383     <span class="comment">/* See write_ivf_file_header() for more documentation on the file header</span>
    410. 

  410. <a name="l00384"></a>00384 <span class="comment">     * layout.</span>
    411. 

  411. <a name="l00385"></a>00385 <span class="comment">     */</span>
    412. 

  412. <a name="l00386"></a>00386     <span class="keywordflow">if</span> (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
    413. 

  413. <a name="l00387"></a>00387         == IVF_FILE_HDR_SZ - 4)
    414. 

  414. <a name="l00388"></a>00388     {
    415. 

  415. <a name="l00389"></a>00389         {
    416. 

  416. <a name="l00390"></a>00390             is_ivf = 1;
    417. 

  417. <a name="l00391"></a>00391 
    418. 

  418. <a name="l00392"></a>00392             <span class="keywordflow">if</span> (mem_get_le16(raw_hdr + 4) != 0)
    419. 

  419. <a name="l00393"></a>00393                 fprintf(stderr, <span class="stringliteral">&quot;Error: Unrecognized IVF version! This file may not&quot;</span>
    420. 

  420. <a name="l00394"></a>00394                         <span class="stringliteral">&quot; decode properly.&quot;</span>);
    421. 

  421. <a name="l00395"></a>00395 
    422. 

  422. <a name="l00396"></a>00396             *fourcc = mem_get_le32(raw_hdr + 8);
    423. 

  423. <a name="l00397"></a>00397         }
    424. 

  424. <a name="l00398"></a>00398     }
    425. 

  425. <a name="l00399"></a>00399 
    426. 

  426. <a name="l00400"></a>00400     <span class="keywordflow">if</span> (is_ivf)
    427. 

  427. <a name="l00401"></a>00401     {
    428. 

  428. <a name="l00402"></a>00402         *width = mem_get_le16(raw_hdr + 12);
    429. 

  429. <a name="l00403"></a>00403         *height = mem_get_le16(raw_hdr + 14);
    430. 

  430. <a name="l00404"></a>00404         detect-&gt;position = 4;
    431. 

  431. <a name="l00405"></a>00405     }
    432. 

  432. <a name="l00406"></a>00406 
    433. 

  433. <a name="l00407"></a>00407     <span class="keywordflow">return</span> is_ivf;
    434. 

  434. <a name="l00408"></a>00408 }
    435. 

  435. <a name="l00409"></a>00409 
    436. 

  436. <a name="l00410"></a>00410 
    437. 

  437. <a name="l00411"></a>00411 <span class="keyword">static</span> <span class="keywordtype">void</span> write_ivf_file_header(FILE *outfile,
    438. 

  438. <a name="l00412"></a>00412                                   <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,
    439. 

  439. <a name="l00413"></a>00413                                   <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> fourcc,
    440. 

  440. <a name="l00414"></a>00414                                   <span class="keywordtype">int</span> frame_cnt)
    441. 

  441. <a name="l00415"></a>00415 {
    442. 

  442. <a name="l00416"></a>00416     <span class="keywordtype">char</span> header[32];
    443. 

  443. <a name="l00417"></a>00417 
    444. 

  444. <a name="l00418"></a>00418     <span class="keywordflow">if</span> (cfg-&gt;<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> &amp;&amp; cfg-&gt;<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>)
    445. 

  445. <a name="l00419"></a>00419         <span class="keywordflow">return</span>;
    446. 

  446. <a name="l00420"></a>00420 
    447. 

  447. <a name="l00421"></a>00421     header[0] = <span class="charliteral">&apos;D&apos;</span>;
    448. 

  448. <a name="l00422"></a>00422     header[1] = <span class="charliteral">&apos;K&apos;</span>;
    449. 

  449. <a name="l00423"></a>00423     header[2] = <span class="charliteral">&apos;I&apos;</span>;
    450. 

  450. <a name="l00424"></a>00424     header[3] = <span class="charliteral">&apos;F&apos;</span>;
    451. 

  451. <a name="l00425"></a>00425     mem_put_le16(header + 4,  0);                 <span class="comment">/* version */</span>
    452. 

  452. <a name="l00426"></a>00426     mem_put_le16(header + 6,  32);                <span class="comment">/* headersize */</span>
    453. 

  453. <a name="l00427"></a>00427     mem_put_le32(header + 8,  fourcc);            <span class="comment">/* headersize */</span>
    454. 

  454. <a name="l00428"></a>00428     mem_put_le16(header + 12, cfg-&gt;<a class="code" href="structvpx__codec__enc__cfg.html#a5c165f5b41ca1158f2883983a2b7709c" title="Width of the frame.">g_w</a>);          <span class="comment">/* width */</span>
    455. 

  455. <a name="l00429"></a>00429     mem_put_le16(header + 14, cfg-&gt;<a class="code" href="structvpx__codec__enc__cfg.html#a4132bd89ce85bce7c08f2cc3b6f2b82e" title="Height of the frame.">g_h</a>);          <span class="comment">/* height */</span>
    456. 

  456. <a name="l00430"></a>00430     mem_put_le32(header + 16, cfg-&gt;<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>
    457. 

  457. <a name="l00431"></a>00431     mem_put_le32(header + 20, cfg-&gt;<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>
    458. 

  458. <a name="l00432"></a>00432     mem_put_le32(header + 24, frame_cnt);         <span class="comment">/* length */</span>
    459. 

  459. <a name="l00433"></a>00433     mem_put_le32(header + 28, 0);                 <span class="comment">/* unused */</span>
    460. 

  460. <a name="l00434"></a>00434 
    461. 

  461. <a name="l00435"></a>00435     <span class="keywordflow">if</span>(fwrite(header, 1, 32, outfile));
    462. 

  462. <a name="l00436"></a>00436 }
    463. 

  463. <a name="l00437"></a>00437 
    464. 

  464. <a name="l00438"></a>00438 
    465. 

  465. <a name="l00439"></a>00439 <span class="keyword">static</span> <span class="keywordtype">void</span> write_ivf_frame_header(FILE *outfile,
    466. 

  466. <a name="l00440"></a>00440                                    <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)
    467. 

  467. <a name="l00441"></a>00441 {
    468. 

  468. <a name="l00442"></a>00442     <span class="keywordtype">char</span>             header[12];
    469. 

  469. <a name="l00443"></a>00443     <a class="code" href="group__encoder.html#ga7e711b0a71c65aef8f0faea8bd57b05f" title="Time Stamp Type.">vpx_codec_pts_t</a>  pts;
    470. 

  470. <a name="l00444"></a>00444 
    471. 

  471. <a name="l00445"></a>00445     <span class="keywordflow">if</span> (pkt-&gt;<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>)
    472. 

  472. <a name="l00446"></a>00446         <span class="keywordflow">return</span>;
    473. 

  473. <a name="l00447"></a>00447 
    474. 

  474. <a name="l00448"></a>00448     pts = pkt-&gt;<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;
    475. 

  475. <a name="l00449"></a>00449     mem_put_le32(header, pkt-&gt;<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);
    476. 

  476. <a name="l00450"></a>00450     mem_put_le32(header + 4, pts &amp; 0xFFFFFFFF);
    477. 

  477. <a name="l00451"></a>00451     mem_put_le32(header + 8, pts &gt;&gt; 32);
    478. 

  478. <a name="l00452"></a>00452 
    479. 

  479. <a name="l00453"></a>00453     <span class="keywordflow">if</span>(fwrite(header, 1, 12, outfile));
    480. 

  480. <a name="l00454"></a>00454 }
    481. 

  481. <a name="l00455"></a>00455 
    482. 

  482. <a name="l00456"></a>00456 
    483. 

  483. <a name="l00457"></a>00457 <span class="keyword">typedef</span> off_t EbmlLoc;
    484. 

  484. <a name="l00458"></a>00458 
    485. 

  485. <a name="l00459"></a>00459 
    486. 

  486. <a name="l00460"></a>00460 <span class="keyword">struct </span>cue_entry
    487. 

  487. <a name="l00461"></a>00461 {
    488. 

  488. <a name="l00462"></a>00462     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> time;
    489. 

  489. <a name="l00463"></a>00463     uint64_t     loc;
    490. 

  490. <a name="l00464"></a>00464 };
    491. 

  491. <a name="l00465"></a>00465 
    492. 

  492. <a name="l00466"></a>00466 
    493. 

  493. <a name="l00467"></a>00467 <span class="keyword">struct </span>EbmlGlobal
    494. 

  494. <a name="l00468"></a>00468 {
    495. 

  495. <a name="l00469"></a>00469     <span class="keywordtype">int</span> debug;
    496. 

  496. <a name="l00470"></a>00470 
    497. 

  497. <a name="l00471"></a>00471     FILE    *stream;
    498. 

  498. <a name="l00472"></a>00472     int64_t last_pts_ms;
    499. 

  499. <a name="l00473"></a>00473     <a class="code" href="structvpx__rational.html" title="Rational Number.">vpx_rational_t</a>  framerate;
    500. 

  500. <a name="l00474"></a>00474 
    501. 

  501. <a name="l00475"></a>00475     <span class="comment">/* These pointers are to the start of an element */</span>
    502. 

  502. <a name="l00476"></a>00476     off_t    position_reference;
    503. 

  503. <a name="l00477"></a>00477     off_t    seek_info_pos;
    504. 

  504. <a name="l00478"></a>00478     off_t    segment_info_pos;
    505. 

  505. <a name="l00479"></a>00479     off_t    track_pos;
    506. 

  506. <a name="l00480"></a>00480     off_t    cue_pos;
    507. 

  507. <a name="l00481"></a>00481     off_t    cluster_pos;
    508. 

  508. <a name="l00482"></a>00482 
    509. 

  509. <a name="l00483"></a>00483     <span class="comment">/* This pointer is to a specific element to be serialized */</span>
    510. 

  510. <a name="l00484"></a>00484     off_t    track_id_pos;
    511. 

  511. <a name="l00485"></a>00485 
    512. 

  512. <a name="l00486"></a>00486     <span class="comment">/* These pointers are to the size field of the element */</span>
    513. 

  513. <a name="l00487"></a>00487     EbmlLoc  startSegment;
    514. 

  514. <a name="l00488"></a>00488     EbmlLoc  startCluster;
    515. 

  515. <a name="l00489"></a>00489 
    516. 

  516. <a name="l00490"></a>00490     uint32_t cluster_timecode;
    517. 

  517. <a name="l00491"></a>00491     <span class="keywordtype">int</span>      cluster_open;
    518. 

  518. <a name="l00492"></a>00492 
    519. 

  519. <a name="l00493"></a>00493     <span class="keyword">struct </span>cue_entry *cue_list;
    520. 

  520. <a name="l00494"></a>00494     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>      cues;
    521. 

  521. <a name="l00495"></a>00495 
    522. 

  522. <a name="l00496"></a>00496 };
    523. 

  523. <a name="l00497"></a>00497 
    524. 

  524. <a name="l00498"></a>00498 
    525. 

  525. <a name="l00499"></a>00499 <span class="keywordtype">void</span> Ebml_Write(EbmlGlobal *glob, <span class="keyword">const</span> <span class="keywordtype">void</span> *buffer_in, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> len)
    526. 

  526. <a name="l00500"></a>00500 {
    527. 

  527. <a name="l00501"></a>00501     <span class="keywordflow">if</span>(fwrite(buffer_in, 1, len, glob-&gt;stream));
    528. 

  528. <a name="l00502"></a>00502 }
    529. 

  529. <a name="l00503"></a>00503 
    530. 

  530. <a name="l00504"></a>00504 <span class="preprocessor">#define WRITE_BUFFER(s) \</span>
    531. 

  531. <a name="l00505"></a>00505 <span class="preprocessor">for(i = len-1; i&gt;=0; i--)\</span>
    532. 

  532. <a name="l00506"></a>00506 <span class="preprocessor">{ \</span>
    533. 

  533. <a name="l00507"></a>00507 <span class="preprocessor">    x = *(const s *)buffer_in &gt;&gt; (i * CHAR_BIT); \</span>
    534. 

  534. <a name="l00508"></a>00508 <span class="preprocessor">    Ebml_Write(glob, &amp;x, 1); \</span>
    535. 

  535. <a name="l00509"></a>00509 <span class="preprocessor">}</span>
    536. 

  536. <a name="l00510"></a>00510 <span class="preprocessor"></span><span class="keywordtype">void</span> Ebml_Serialize(EbmlGlobal *glob, <span class="keyword">const</span> <span class="keywordtype">void</span> *buffer_in, <span class="keywordtype">int</span> buffer_size, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> len)
    537. 

  537. <a name="l00511"></a>00511 {
    538. 

  538. <a name="l00512"></a>00512     <span class="keywordtype">char</span> x;
    539. 

  539. <a name="l00513"></a>00513     <span class="keywordtype">int</span> i;
    540. 

  540. <a name="l00514"></a>00514 
    541. 

  541. <a name="l00515"></a>00515     <span class="comment">/* buffer_size:</span>
    542. 

  542. <a name="l00516"></a>00516 <span class="comment">     * 1 - int8_t;</span>
    543. 

  543. <a name="l00517"></a>00517 <span class="comment">     * 2 - int16_t;</span>
    544. 

  544. <a name="l00518"></a>00518 <span class="comment">     * 3 - int32_t;</span>
    545. 

  545. <a name="l00519"></a>00519 <span class="comment">     * 4 - int64_t;</span>
    546. 

  546. <a name="l00520"></a>00520 <span class="comment">     */</span>
    547. 

  547. <a name="l00521"></a>00521     <span class="keywordflow">switch</span> (buffer_size)
    548. 

  548. <a name="l00522"></a>00522     {
    549. 

  549. <a name="l00523"></a>00523         <span class="keywordflow">case</span> 1:
    550. 

  550. <a name="l00524"></a>00524             WRITE_BUFFER(int8_t)
    551. 

  551. <a name="l00525"></a>00525             break;
    552. 

  552. <a name="l00526"></a>00526         case 2:
    553. 

  553. <a name="l00527"></a>00527             WRITE_BUFFER(int16_t)
    554. 

  554. <a name="l00528"></a>00528             break;
    555. 

  555. <a name="l00529"></a>00529         case 4:
    556. 

  556. <a name="l00530"></a>00530             WRITE_BUFFER(int32_t)
    557. 

  557. <a name="l00531"></a>00531             break;
    558. 

  558. <a name="l00532"></a>00532         case 8:
    559. 

  559. <a name="l00533"></a>00533             WRITE_BUFFER(int64_t)
    560. 

  560. <a name="l00534"></a>00534             break;
    561. 

  561. <a name="l00535"></a>00535         default:
    562. 

  562. <a name="l00536"></a>00536             break;
    563. 

  563. <a name="l00537"></a>00537     }
    564. 

  564. <a name="l00538"></a>00538 }
    565. 

  565. <a name="l00539"></a>00539 <span class="preprocessor">#undef WRITE_BUFFER</span>
    566. 

  566. <a name="l00540"></a>00540 <span class="preprocessor"></span>
    567. 

  567. <a name="l00541"></a>00541 <span class="comment">/* Need a fixed size serializer for the track ID. libmkv provides a 64 bit</span>
    568. 

  568. <a name="l00542"></a>00542 <span class="comment"> * one, but not a 32 bit one.</span>
    569. 

  569. <a name="l00543"></a>00543 <span class="comment"> */</span>
    570. 

  570. <a name="l00544"></a>00544 <span class="keyword">static</span> <span class="keywordtype">void</span> Ebml_SerializeUnsigned32(EbmlGlobal *glob, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> class_id, uint64_t ui)
    571. 

  571. <a name="l00545"></a>00545 {
    572. 

  572. <a name="l00546"></a>00546     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sizeSerialized = 4 | 0x80;
    573. 

  573. <a name="l00547"></a>00547     Ebml_WriteID(glob, class_id);
    574. 

  574. <a name="l00548"></a>00548     Ebml_Serialize(glob, &amp;sizeSerialized, <span class="keyword">sizeof</span>(sizeSerialized), 1);
    575. 

  575. <a name="l00549"></a>00549     Ebml_Serialize(glob, &amp;ui, <span class="keyword">sizeof</span>(ui), 4);
    576. 

  576. <a name="l00550"></a>00550 }
    577. 

  577. <a name="l00551"></a>00551 
    578. 

  578. <a name="l00552"></a>00552 
    579. 

  579. <a name="l00553"></a>00553 <span class="keyword">static</span> <span class="keywordtype">void</span>
    580. 

  580. <a name="l00554"></a>00554 Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc,
    581. 

  581. <a name="l00555"></a>00555                           <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> class_id)
    582. 

  582. <a name="l00556"></a>00556 {
    583. 

  583. <a name="l00557"></a>00557     <span class="comment">//todo this is always taking 8 bytes, this may need later optimization</span>
    584. 

  584. <a name="l00558"></a>00558     <span class="comment">//this is a key that says length unknown</span>
    585. 

  585. <a name="l00559"></a>00559     uint64_t unknownLen =  LITERALU64(0x01FFFFFFFFFFFFFF);
    586. 

  586. <a name="l00560"></a>00560 
    587. 

  587. <a name="l00561"></a>00561     Ebml_WriteID(glob, class_id);
    588. 

  588. <a name="l00562"></a>00562     *ebmlLoc = ftello(glob-&gt;stream);
    589. 

  589. <a name="l00563"></a>00563     Ebml_Serialize(glob, &amp;unknownLen, <span class="keyword">sizeof</span>(unknownLen), 8);
    590. 

  590. <a name="l00564"></a>00564 }
    591. 

  591. <a name="l00565"></a>00565 
    592. 

  592. <a name="l00566"></a>00566 <span class="keyword">static</span> <span class="keywordtype">void</span>
    593. 

  593. <a name="l00567"></a>00567 Ebml_EndSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc)
    594. 

  594. <a name="l00568"></a>00568 {
    595. 

  595. <a name="l00569"></a>00569     off_t pos;
    596. 

  596. <a name="l00570"></a>00570     uint64_t size;
    597. 

  597. <a name="l00571"></a>00571 
    598. 

  598. <a name="l00572"></a>00572     <span class="comment">/* Save the current stream pointer */</span>
    599. 

  599. <a name="l00573"></a>00573     pos = ftello(glob-&gt;stream);
    600. 

  600. <a name="l00574"></a>00574 
    601. 

  601. <a name="l00575"></a>00575     <span class="comment">/* Calculate the size of this element */</span>
    602. 

  602. <a name="l00576"></a>00576     size = pos - *ebmlLoc - 8;
    603. 

  603. <a name="l00577"></a>00577     size |=  LITERALU64(0x0100000000000000);
    604. 

  604. <a name="l00578"></a>00578 
    605. 

  605. <a name="l00579"></a>00579     <span class="comment">/* Seek back to the beginning of the element and write the new size */</span>
    606. 

  606. <a name="l00580"></a>00580     fseeko(glob-&gt;stream, *ebmlLoc, SEEK_SET);
    607. 

  607. <a name="l00581"></a>00581     Ebml_Serialize(glob, &amp;size, <span class="keyword">sizeof</span>(size), 8);
    608. 

  608. <a name="l00582"></a>00582 
    609. 

  609. <a name="l00583"></a>00583     <span class="comment">/* Reset the stream pointer */</span>
    610. 

  610. <a name="l00584"></a>00584     fseeko(glob-&gt;stream, pos, SEEK_SET);
    611. 

  611. <a name="l00585"></a>00585 }
    612. 

  612. <a name="l00586"></a>00586 
    613. 

  613. <a name="l00587"></a>00587 
    614. 

  614. <a name="l00588"></a>00588 <span class="keyword">static</span> <span class="keywordtype">void</span>
    615. 

  615. <a name="l00589"></a>00589 write_webm_seek_element(EbmlGlobal *ebml, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <span class="keywordtype">id</span>, off_t pos)
    616. 

  616. <a name="l00590"></a>00590 {
    617. 

  617. <a name="l00591"></a>00591     uint64_t offset = pos - ebml-&gt;position_reference;
    618. 

  618. <a name="l00592"></a>00592     EbmlLoc start;
    619. 

  619. <a name="l00593"></a>00593     Ebml_StartSubElement(ebml, &amp;start, Seek);
    620. 

  620. <a name="l00594"></a>00594     Ebml_SerializeBinary(ebml, SeekID, <span class="keywordtype">id</span>);
    621. 

  621. <a name="l00595"></a>00595     Ebml_SerializeUnsigned64(ebml, SeekPosition, offset);
    622. 

  622. <a name="l00596"></a>00596     Ebml_EndSubElement(ebml, &amp;start);
    623. 

  623. <a name="l00597"></a>00597 }
    624. 

  624. <a name="l00598"></a>00598 
    625. 

  625. <a name="l00599"></a>00599 
    626. 

  626. <a name="l00600"></a>00600 <span class="keyword">static</span> <span class="keywordtype">void</span>
    627. 

  627. <a name="l00601"></a>00601 write_webm_seek_info(EbmlGlobal *ebml)
    628. 

  628. <a name="l00602"></a>00602 {
    629. 

  629. <a name="l00603"></a>00603 
    630. 

  630. <a name="l00604"></a>00604     off_t pos;
    631. 

  631. <a name="l00605"></a>00605 
    632. 

  632. <a name="l00606"></a>00606     <span class="comment">/* Save the current stream pointer */<…
    633.

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