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<a href="buffersrc_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *</span>
<a name="l00003"></a>00003 <span class="comment"> * This file is part of FFmpeg.</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span>
<a name="l00006"></a>00006 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00007"></a>00007 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00008"></a>00008 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00013"></a>00013 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00016"></a>00016 <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span>
<a name="l00017"></a>00017 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00018"></a>00018 <span class="comment"> */</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#ifndef AVFILTER_BUFFERSRC_H</span>
<a name="l00021"></a>00021 <span class="preprocessor"></span><span class="preprocessor">#define AVFILTER_BUFFERSRC_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00023"></a>00023 <span class="comment">/**</span>
<a name="l00024"></a>00024 <span class="comment"> * @file</span>
<a name="l00025"></a>00025 <span class="comment"> * @ingroup lavfi_buffersrc</span>
<a name="l00026"></a>00026 <span class="comment"> * Memory buffer source API.</span>
<a name="l00027"></a>00027 <span class="comment"> */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include "<a class="code" href="libavcodec_2avcodec_8h.html" title="Libavcodec external API header.">libavcodec/avcodec.h</a>"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="avfilter_8h.html" title="Main libavfilter public API header.">avfilter.h</a>"</span>
<a name="l00031"></a>00031 <span class="comment"></span>
<a name="l00032"></a>00032 <span class="comment">/**</span>
<a name="l00033"></a>00033 <span class="comment"> * @defgroup lavfi_buffersrc Buffer source API</span>
<a name="l00034"></a>00034 <span class="comment"> * @ingroup lavfi</span>
<a name="l00035"></a>00035 <span class="comment"> * @{</span>
<a name="l00036"></a>00036 <span class="comment"> */</span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">enum</span> {
<a name="l00039"></a>00039 <span class="comment"></span>
<a name="l00040"></a>00040 <span class="comment"> /**</span>
<a name="l00041"></a>00041 <span class="comment"> * Do not check for format changes.</span>
<a name="l00042"></a>00042 <span class="comment"> */</span>
<a name="l00043"></a><a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a6efcf61145ec6d60d3a773fcd0797872">00043</a> <a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a6efcf61145ec6d60d3a773fcd0797872" title="Do not check for format changes.">AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT</a> = 1,
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="preprocessor">#if FF_API_AVFILTERBUFFER</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="comment"> /**</span>
<a name="l00047"></a>00047 <span class="comment"> * Ignored</span>
<a name="l00048"></a>00048 <span class="comment"> */</span>
<a name="l00049"></a>00049 AV_BUFFERSRC_FLAG_NO_COPY = 2,
<a name="l00050"></a>00050 <span class="preprocessor">#endif</span>
<a name="l00051"></a>00051 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00052"></a>00052 <span class="comment"> /**</span>
<a name="l00053"></a>00053 <span class="comment"> * Immediately push the frame to the output.</span>
<a name="l00054"></a>00054 <span class="comment"> */</span>
<a name="l00055"></a><a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a361be31bba170d5ec5bac19ce962ceb5">00055</a> <a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a361be31bba170d5ec5bac19ce962ceb5" title="Immediately push the frame to the output.">AV_BUFFERSRC_FLAG_PUSH</a> = 4,
<a name="l00056"></a>00056 <span class="comment"></span>
<a name="l00057"></a>00057 <span class="comment"> /**</span>
<a name="l00058"></a>00058 <span class="comment"> * Keep a reference to the frame.</span>
<a name="l00059"></a>00059 <span class="comment"> * If the frame if reference-counted, create a new reference; otherwise</span>
<a name="l00060"></a>00060 <span class="comment"> * copy the frame data.</span>
<a name="l00061"></a>00061 <span class="comment"> */</span>
<a name="l00062"></a><a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a24758c8f4deed09b04b1be6c2e66a14e">00062</a> <a class="code" href="group__lavfi__buffersrc.html#gga99fb83031ce9923c84392b4e92f956b5a24758c8f4deed09b04b1be6c2e66a14e" title="Keep a reference to the frame.">AV_BUFFERSRC_FLAG_KEEP_REF</a> = 8,
<a name="l00063"></a>00063
<a name="l00064"></a>00064 };
<a name="l00065"></a>00065 <span class="comment"></span>
<a name="l00066"></a>00066 <span class="comment">/**</span>
<a name="l00067"></a>00067 <span class="comment"> * Add buffer data in picref to buffer_src.</span>
<a name="l00068"></a>00068 <span class="comment"> *</span>
<a name="l00069"></a>00069 <span class="comment"> * @param buffer_src pointer to a buffer source context</span>
<a name="l00070"></a>00070 <span class="comment"> * @param picref a buffer reference, or NULL to mark EOF</span>
<a name="l00071"></a>00071 <span class="comment"> * @param flags a combination of AV_BUFFERSRC_FLAG_*</span>
<a name="l00072"></a>00072 <span class="comment"> * @return >= 0 in case of success, a negative AVERROR code</span>
<a name="l00073"></a>00073 <span class="comment"> * in case of failure</span>
<a name="l00074"></a>00074 <span class="comment"> */</span>
<a name="l00075"></a>00075 <span class="keywordtype">int</span> <a class="code" href="group__lavfi__buffersrc.html#ga77cbac27e90408ba6e3e34a9fa6558f0" title="Add buffer data in picref to buffer_src.">av_buffersrc_add_ref</a>(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *buffer_src,
<a name="l00076"></a>00076 AVFilterBufferRef *picref, <span class="keywordtype">int</span> flags);
<a name="l00077"></a>00077 <span class="comment"></span>
<a name="l00078"></a>00078 <span class="comment">/**</span>
<a name="l00079"></a>00079 <span class="comment"> * Get the number of failed requests.</span>
<a name="l00080"></a>00080 <span class="comment"> *</span>
<a name="l00081"></a>00081 <span class="comment"> * A failed request is when the request_frame method is called while no</span>
<a name="l00082"></a>00082 <span class="comment"> * frame is present in the buffer.</span>
<a name="l00083"></a>00083 <span class="comment"> * The number is reset when a frame is added.</span>
<a name="l00084"></a>00084 <span class="comment"> */</span>
<a name="l00085"></a>00085 <span class="keywordtype">unsigned</span> <a class="code" href="group__lavfi__buffersrc.html#ga996e96007a0fda870549ac3c4e1e0967" title="Get the number of failed requests.">av_buffersrc_get_nb_failed_requests</a>(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *buffer_src);
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="preprocessor">#if FF_API_AVFILTERBUFFER</span>
<a name="l00088"></a>00088 <span class="preprocessor"></span><span class="comment">/**</span>
<a name="l00089"></a>00089 <span class="comment"> * Add a buffer to a filtergraph.</span>
<a name="l00090"></a>00090 <span class="comment"> *</span>
<a name="l00091"></a>00091 <span class="comment"> * @param ctx an instance of the buffersrc filter</span>
<a name="l00092"></a>00092 <span class="comment"> * @param buf buffer containing frame data to be passed down the filtergraph.</span>
<a name="l00093"></a>00093 <span class="comment"> * This function will take ownership of buf, the user must not free it.</span>
<a name="l00094"></a>00094 <span class="comment"> * A NULL buf signals EOF -- i.e. no more frames will be sent to this filter.</span>
<a name="l00095"></a>00095 <span class="comment"> *</span>
<a name="l00096"></a>00096 <span class="comment"> * @deprecated use av_buffersrc_write_frame() or av_buffersrc_add_frame()</span>
<a name="l00097"></a>00097 <span class="comment"> */</span>
<a name="l00098"></a>00098 <a class="code" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a>
<a name="l00099"></a>00099 <span class="keywordtype">int</span> av_buffersrc_buffer(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *ctx, AVFilterBufferRef *buf);
<a name="l00100"></a>00100 <span class="preprocessor">#endif</span>
<a name="l00101"></a>00101 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00102"></a>00102 <span class="comment">/**</span>
<a name="l00103"></a>00103 <span class="comment"> * Add a frame to the buffer source.</span>
<a name="l00104"></a>00104 <span class="comment"> *</span>
<a name="l00105"></a>00105 <span class="comment"> * @param ctx an instance of the buffersrc filter</span>
<a name="l00106"></a>00106 <span class="comment"> * @param frame frame to be added. If the frame is reference counted, this</span>
<a name="l00107"></a>00107 <span class="comment"> * function will make a new reference to it. Otherwise the frame data will be</span>
<a name="l00108"></a>00108 <span class="comment"> * copied.</span>
<a name="l00109"></a>00109 <span class="comment"> *</span>
<a name="l00110"></a>00110 <span class="comment"> * @return 0 on success, a negative AVERROR on error</span>
<a name="l00111"></a>00111 <span class="comment"> *</span>
<a name="l00112"></a>00112 <span class="comment"> * This function is equivalent to av_buffersrc_add_frame_flags() with the</span>
<a name="l00113"></a>00113 <span class="comment"> * AV_BUFFERSRC_FLAG_KEEP_REF flag.</span>
<a name="l00114"></a>00114 <span class="comment"> */</span>
<a name="l00115"></a>00115 <span class="keywordtype">int</span> <a class="code" href="group__lavfi__buffersrc.html#ga98515c064f012e4d6c8a72830170935e" title="Add a frame to the buffer source.">av_buffersrc_write_frame</a>(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *ctx, <span class="keyword">const</span> <a class="code" href="structAVFrame.html" title="This structure describes decoded (raw) audio or video data.">AVFrame</a> *<a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a>);
<a name="l00116"></a>00116 <span class="comment"></span>
<a name="l00117"></a>00117 <span class="comment">/**</span>
<a name="l00118"></a>00118 <span class="comment"> * Add a frame to the buffer source.</span>
<a name="l00119"></a>00119 <span class="comment"> *</span>
<a name="l00120"></a>00120 <span class="comment"> * @param ctx an instance of the buffersrc filter</span>
<a name="l00121"></a>00121 <span class="comment"> * @param frame frame to be added. If the frame is reference counted, this</span>
<a name="l00122"></a>00122 <span class="comment"> * function will take ownership of the reference(s) and reset the frame.</span>
<a name="l00123"></a>00123 <span class="comment"> * Otherwise the frame data will be copied. If this function returns an error,</span>
<a name="l00124"></a>00124 <span class="comment"> * the input frame is not touched.</span>
<a name="l00125"></a>00125 <span class="comment"> *</span>
<a name="l00126"></a>00126 <span class="comment"> * @return 0 on success, a negative AVERROR on error.</span>
<a name="l00127"></a>00127 <span class="comment"> *</span>
<a name="l00128"></a>00128 <span class="comment"> * @note the difference between this function and av_buffersrc_write_frame() is</span>
<a name="l00129"></a>00129 <span class="comment"> * that av_buffersrc_write_frame() creates a new reference to the input frame,</span>
<a name="l00130"></a>00130 <span class="comment"> * while this function takes ownership of the reference passed to it.</span>
<a name="l00131"></a>00131 <span class="comment"> *</span>
<a name="l00132"></a>00132 <span class="comment"> * This function is equivalent to av_buffersrc_add_frame_flags() without the</span>
<a name="l00133"></a>00133 <span class="comment"> * AV_BUFFERSRC_FLAG_KEEP_REF flag.</span>
<a name="l00134"></a>00134 <span class="comment"> */</span>
<a name="l00135"></a>00135 <span class="keywordtype">int</span> <a class="code" href="group__lavfi__buffersrc.html#ga278eb115bf4c5bb98626427db06d032c" title="Add a frame to the buffer source.">av_buffersrc_add_frame</a>(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *ctx, <a class="code" href="structAVFrame.html" title="This structure describes decoded (raw) audio or video data.">AVFrame</a> *<a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a>);
<a name="l00136"></a>00136 <span class="comment"></span>
<a name="l00137"></a>00137 <span class="comment">/**</span>
<a name="l00138"></a>00138 <span class="comment"> * Add a frame to the buffer source.</span>
<a name="l00139"></a>00139 <span class="comment"> *</span>
<a name="l00140"></a>00140 <span class="comment"> * By default, if the frame is reference-counted, this function will take</span>
<a name="l00141"></a>00141 <span class="comment"> * ownership of the reference(s) and reset the frame. This can be controlled</span>
<a name="l00142"></a>00142 <span class="comment"> * using the flags.</span>
<a name="l00143"></a>00143 <span class="comment"> *</span>
<a name="l00144"></a>00144 <span class="comment"> * If this function returns an error, the input frame is not touched.</span>
<a name="l00145"></a>00145 <span class="comment"> *</span>
<a name="l00146"></a>00146 <span class="comment"> * @param buffer_src pointer to a buffer source context</span>
<a name="l00147"></a>00147 <span class="comment"> * @param frame a frame, or NULL to mark EOF</span>
<a name="l00148"></a>00148 <span class="comment"> * @param flags a combination of AV_BUFFERSRC_FLAG_*</span>
<a name="l00149"></a>00149 <span class="comment"> * @return >= 0 in case of success, a negative AVERROR code</span>
<a name="l00150"></a>00150 <span class="comment"> * in case of failure</span>
<a name="l00151"></a>00151 <span class="comment"> */</span>
<a name="l00152"></a>00152 <span class="keywordtype">int</span> <a class="code" href="group__lavfi__buffersrc.html#ga54133fc5421777515032c593bc00f191" title="Add a frame to the buffer source.">av_buffersrc_add_frame_flags</a>(<a class="code" href="structAVFilterContext.html" title="An instance of a filter.">AVFilterContext</a> *buffer_src,
<a name="l00153"></a>00153 <a class="code" href="structAVFrame.html" title="This structure describes decoded (raw) audio or video data.">AVFrame</a> *<a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a>, <span class="keywordtype">int</span> flags);
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment"></span>
<a name="l00156"></a>00156 <span class="comment">/**</span>
<a name="l00157"></a>00157 <span class="comment"> * @}</span>
<a name="l00158"></a>00158 <span class="comment"> */</span>
<a name="l00159"></a>00159
<a name="l00160"></a>00160 <span class="preprocessor">#endif </span><span class="comment">/* AVFILTER_BUFFERSRC_H */</span>
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