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<div class="title">demuxing_decoding.c</div> </div>
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<div class="fragment"><div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment"> * Copyright (c) 2012 Stefano Sabatini</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a copy</span></div>
<div class="line"><span class="comment"> * of this software and associated documentation files (the "Software"), to deal</span></div>
<div class="line"><span class="comment"> * in the Software without restriction, including without limitation the rights</span></div>
<div class="line"><span class="comment"> * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span></div>
<div class="line"><span class="comment"> * copies of the Software, and to permit persons to whom the Software is</span></div>
<div class="line"><span class="comment"> * furnished to do so, subject to the following conditions:</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * The above copyright notice and this permission notice shall be included in</span></div>
<div class="line"><span class="comment"> * all copies or substantial portions of the Software.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span></div>
<div class="line"><span class="comment"> * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL</span></div>
<div class="line"><span class="comment"> * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span></div>
<div class="line"><span class="comment"> * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN</span></div>
<div class="line"><span class="comment"> * THE SOFTWARE.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><span class="comment"></span></div>
<div class="line"><span class="comment">/**</span></div>
<div class="line"><span class="comment"> * @file</span></div>
<div class="line"><span class="comment"> * Demuxing and decoding example.</span></div>
<div class="line"><span class="comment"> *</span></div>
<div class="line"><span class="comment"> * Show how to use the libavformat and libavcodec API to demux and</span></div>
<div class="line"><span class="comment"> * decode audio and video data.</span></div>
<div class="line"><span class="comment"> * @example demuxing_decoding.c</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="imgutils_8h.html">libavutil/imgutils.h</a>></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="samplefmt_8h.html">libavutil/samplefmt.h</a>></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="timestamp_8h.html">libavutil/timestamp.h</a>></span></div>
<div class="line"><span class="preprocessor">#include <<a class="code" href="avformat_8h.html">libavformat/avformat.h</a>></span></div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <a name="_a0"></a><a class="code" href="structAVFormatContext.html">AVFormatContext</a> *<a name="a1"></a><a class="code" href="demuxing__decoding_8c.html#a409462acdf7aebe5bfbe1bcd811efa5d">fmt_ctx</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> <a name="_a2"></a><a class="code" href="structAVCodecContext.html">AVCodecContext</a> *<a name="a3"></a><a class="code" href="demuxing__decoding_8c.html#a2e10f5f24d4c8dd311b8eedc376accf5">video_dec_ctx</a> = NULL, *<a name="a4"></a><a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>;</div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a5"></a><a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <a name="a6"></a><a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>;</div>
<div class="line"><span class="keyword">static</span> <span class="keyword">enum</span> <a class="code" href="pixfmt_8h.html#a9a8e335cf3be472042bc9f0cf80cd4c5">AVPixelFormat</a> <a name="a7"></a><a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>;</div>
<div class="line"><span class="keyword">static</span> <a name="_a8"></a><a class="code" href="structAVStream.html">AVStream</a> *<a name="a9"></a><a class="code" href="demuxing__decoding_8c.html#a9decdb9a2529baa6bd2a855a12f1f0fc">video_stream</a> = NULL, *<a name="a10"></a><a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a name="a11"></a><a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a name="a12"></a><a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a name="a13"></a><a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> FILE *<a name="a14"></a><a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> FILE *<a name="a15"></a><a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a> = NULL;</div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> uint8_t *<a name="a16"></a><a class="code" href="demuxing__decoding_8c.html#a0b39e94f88658412ecadb5e2116baccc">video_dst_data</a>[4] = {NULL};</div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a17"></a><a class="code" href="demuxing__decoding_8c.html#a8dbcd4dc85b9345bde18395026d0ffe4">video_dst_linesize</a>[4];</div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a18"></a><a class="code" href="demuxing__decoding_8c.html#a849609cb135f2d344ff03e99610b43df">video_dst_bufsize</a>;</div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a19"></a><a class="code" href="demuxing__decoding_8c.html#af35f69f407b98b5244f837e25813bc11">video_stream_idx</a> = -1, <a name="a20"></a><a class="code" href="demuxing__decoding_8c.html#a16cd83c72f483b9fa2844c5516452798">audio_stream_idx</a> = -1;</div>
<div class="line"><span class="keyword">static</span> <a name="_a21"></a><a class="code" href="structAVFrame.html">AVFrame</a> *<a name="a22"></a><a class="code" href="demuxing__decoding_8c.html#ad7d33d579a8d4241a5e643e39287a209">frame</a> = NULL;</div>
<div class="line"><span class="keyword">static</span> <a name="_a23"></a><a class="code" href="structAVPacket.html">AVPacket</a> <a name="a24"></a><a class="code" href="demuxing__decoding_8c.html#a3d4c6562f0b27cf0cacbbea5c038c090">pkt</a>;</div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a25"></a><a class="code" href="demuxing__decoding_8c.html#ac9f496a4d3575928c5b94568bbedd753">video_frame_count</a> = 0;</div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a26"></a><a class="code" href="demuxing__decoding_8c.html#a48eccd48ea840bc45254f44995320463">audio_frame_count</a> = 0;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* Enable or disable frame reference counting. You are not supposed to support</span></div>
<div class="line"><span class="comment"> * both paths in your application but pick the one most appropriate to your</span></div>
<div class="line"><span class="comment"> * needs. Look for the use of refcount in this example to see what are the</span></div>
<div class="line"><span class="comment"> * differences of API usage between them. */</span></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a27"></a><a class="code" href="demuxing__decoding_8c.html#a6022c8a609170c7365fb96e83cb2df48">refcount</a> = 0;</div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a28"></a><a class="code" href="demuxing__decoding_8c.html#af8c0388188ed14c6585580b04d960a2c">decode_packet</a>(<span class="keywordtype">int</span> *got_frame, <span class="keywordtype">int</span> cached)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> ret = 0;</div>
<div class="line"> <span class="keywordtype">int</span> decoded = pkt.<a name="a29"></a><a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a>;</div>
<div class="line"></div>
<div class="line"> *got_frame = 0;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (pkt.<a name="a30"></a><a class="code" href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">stream_index</a> == <a class="code" href="demuxing__decoding_8c.html#af35f69f407b98b5244f837e25813bc11">video_stream_idx</a>) {</div>
<div class="line"> <span class="comment">/* decode video frame */</span></div>
<div class="line"> ret = <a name="a31"></a><a class="code" href="group__lavc__decoding.html#ga99ee61b6dcffb7817a275d39da58cc74">avcodec_decode_video2</a>(video_dec_ctx, frame, got_frame, &pkt);</div>
<div class="line"> <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Error decoding video frame (%s)\n"</span>, <a name="a32"></a><a class="code" href="group__lavu__error.html#gac4f6e109c242c81aeee21868d3f35e12">av_err2str</a>(ret));</div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (*got_frame) {</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (frame-><a name="a33"></a><a class="code" href="structAVFrame.html#a1e71ce60cedd5f3b6811714a9f7f9e0a">width</a> != <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a> || frame-><a name="a34"></a><a class="code" href="structAVFrame.html#a3f89733f429c98ba5bc64373fb0a3f13">height</a> != <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a> ||</div>
<div class="line"> frame-><a name="a35"></a><a class="code" href="structAVFrame.html#aed14fa772ce46881020fd1545c86432c">format</a> != <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>) {</div>
<div class="line"> <span class="comment">/* To handle this change, one could call av_image_alloc again and</span></div>
<div class="line"><span class="comment"> * decode the following frames into another rawvideo file. */</span></div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Error: Width, height and pixel format have to be "</span></div>
<div class="line"> <span class="stringliteral">"constant in a rawvideo file, but the width, height or "</span></div>
<div class="line"> <span class="stringliteral">"pixel format of the input video changed:\n"</span></div>
<div class="line"> <span class="stringliteral">"old: width = %d, height = %d, format = %s\n"</span></div>
<div class="line"> <span class="stringliteral">"new: width = %d, height = %d, format = %s\n"</span>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <a name="a36"></a><a class="code" href="pixdesc_8h.html#ab92e2a8a9b58c982560c49df9f01e47e">av_get_pix_fmt_name</a>(<a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>),</div>
<div class="line"> frame-><a class="code" href="structAVFrame.html#a1e71ce60cedd5f3b6811714a9f7f9e0a">width</a>, frame-><a class="code" href="structAVFrame.html#a3f89733f429c98ba5bc64373fb0a3f13">height</a>,</div>
<div class="line"> <a class="code" href="pixdesc_8h.html#ab92e2a8a9b58c982560c49df9f01e47e">av_get_pix_fmt_name</a>(frame-><a class="code" href="structAVFrame.html#aed14fa772ce46881020fd1545c86432c">format</a>));</div>
<div class="line"> <span class="keywordflow">return</span> -1;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> printf(<span class="stringliteral">"video_frame%s n:%d coded_n:%d pts:%s\n"</span>,</div>
<div class="line"> cached ? <span class="stringliteral">"(cached)"</span> : <span class="stringliteral">""</span>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#ac9f496a4d3575928c5b94568bbedd753">video_frame_count</a>++, frame-><a name="a37"></a><a class="code" href="structAVFrame.html#a02ca9bb7f500d3d850f8736f3cb29c6c">coded_picture_number</a>,</div>
<div class="line"> <a name="a38"></a><a class="code" href="timestamp_8h.html#ad344b91ede6b86fc0a530611293f42da">av_ts2timestr</a>(frame-><a name="a39"></a><a class="code" href="structAVFrame.html#a0452833e3ab6ddd7acbf82817a7818a4">pts</a>, &video_dec_ctx-><a name="a40"></a><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>));</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* copy decoded frame to destination buffer:</span></div>
<div class="line"><span class="comment"> * this is required since rawvideo expects non aligned data */</span></div>
<div class="line"> <a name="a41"></a><a class="code" href="group__lavu__picture.html#ga6b5a267e202daadf81cbde6584055d1e">av_image_copy</a>(<a class="code" href="demuxing__decoding_8c.html#a0b39e94f88658412ecadb5e2116baccc">video_dst_data</a>, <a class="code" href="demuxing__decoding_8c.html#a8dbcd4dc85b9345bde18395026d0ffe4">video_dst_linesize</a>,</div>
<div class="line"> (<span class="keyword">const</span> uint8_t **)(frame-><a name="a42"></a><a class="code" href="structAVFrame.html#a1d0f65014a8d1bf78cec8cbed2304992">data</a>), frame-><a name="a43"></a><a class="code" href="structAVFrame.html#aa52bfc6605f6a3059a0c3226cc0f6567">linesize</a>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* write to rawvideo file */</span></div>
<div class="line"> fwrite(<a class="code" href="demuxing__decoding_8c.html#a0b39e94f88658412ecadb5e2116baccc">video_dst_data</a>[0], 1, <a class="code" href="demuxing__decoding_8c.html#a849609cb135f2d344ff03e99610b43df">video_dst_bufsize</a>, <a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a>);</div>
<div class="line"> }</div>
<div class="line"> } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (pkt.<a class="code" href="structAVPacket.html#a0d1cb9b5a32b00fb6edc81ea3aae2a49">stream_index</a> == <a class="code" href="demuxing__decoding_8c.html#a16cd83c72f483b9fa2844c5516452798">audio_stream_idx</a>) {</div>
<div class="line"> <span class="comment">/* decode audio frame */</span></div>
<div class="line"> ret = <a name="a44"></a><a class="code" href="group__lavc__decoding.html#ga834bb1b062fbcc2de4cf7fb93f154a3e">avcodec_decode_audio4</a>(<a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>, frame, got_frame, &pkt);</div>
<div class="line"> <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Error decoding audio frame (%s)\n"</span>, <a class="code" href="group__lavu__error.html#gac4f6e109c242c81aeee21868d3f35e12">av_err2str</a>(ret));</div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line"> }</div>
<div class="line"> <span class="comment">/* Some audio decoders decode only part of the packet, and have to be</span></div>
<div class="line"><span class="comment"> * called again with the remainder of the packet data.</span></div>
<div class="line"><span class="comment"> * Sample: fate-suite/lossless-audio/luckynight-partial.shn</span></div>
<div class="line"><span class="comment"> * Also, some decoders might over-read the packet. */</span></div>
<div class="line"> decoded = <a name="a45"></a><a class="code" href="common_8h.html#a0f84cbd7fd810cd678157c98cbfad4b0">FFMIN</a>(ret, pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a>);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (*got_frame) {</div>
<div class="line"> <span class="keywordtype">size_t</span> unpadded_linesize = frame-><a name="a46"></a><a class="code" href="structAVFrame.html#a02f45ab8191aea1660159f1e464237ea">nb_samples</a> * <a name="a47"></a><a class="code" href="group__lavu__sampfmts.html#ga0c3c218e1dd570ad4917c69a35a6c77d">av_get_bytes_per_sample</a>(frame-><a class="code" href="structAVFrame.html#aed14fa772ce46881020fd1545c86432c">format</a>);</div>
<div class="line"> printf(<span class="stringliteral">"audio_frame%s n:%d nb_samples:%d pts:%s\n"</span>,</div>
<div class="line"> cached ? <span class="stringliteral">"(cached)"</span> : <span class="stringliteral">""</span>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a48eccd48ea840bc45254f44995320463">audio_frame_count</a>++, frame-><a class="code" href="structAVFrame.html#a02f45ab8191aea1660159f1e464237ea">nb_samples</a>,</div>
<div class="line"> <a class="code" href="timestamp_8h.html#ad344b91ede6b86fc0a530611293f42da">av_ts2timestr</a>(frame-><a class="code" href="structAVFrame.html#a0452833e3ab6ddd7acbf82817a7818a4">pts</a>, &<a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>-><a class="code" href="structAVCodecContext.html#ab7bfeb9fa5840aac090e2b0bd0ef7589">time_base</a>));</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Write the raw audio data samples of the first plane. This works</span></div>
<div class="line"><span class="comment"> * fine for packed formats (e.g. AV_SAMPLE_FMT_S16). However,</span></div>
<div class="line"><span class="comment"> * most audio decoders output planar audio, which uses a separate</span></div>
<div class="line"><span class="comment"> * plane of audio samples for each channel (e.g. AV_SAMPLE_FMT_S16P).</span></div>
<div class="line"><span class="comment"> * In other words, this code will write only the first audio channel</span></div>
<div class="line"><span class="comment"> * in these cases.</span></div>
<div class="line"><span class="comment"> * You should use libswresample or libavfilter to convert the frame</span></div>
<div class="line"><span class="comment"> * to packed data. */</span></div>
<div class="line"> fwrite(frame-><a name="a48"></a><a class="code" href="structAVFrame.html#afca04d808393822625e09b5ba91c6756">extended_data</a>[0], 1, unpadded_linesize, <a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a>);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* If we use frame reference counting, we own the data and need</span></div>
<div class="line"><span class="comment"> * to de-reference it when we don't use it anymore */</span></div>
<div class="line"> <span class="keywordflow">if</span> (*got_frame && <a class="code" href="demuxing__decoding_8c.html#a6022c8a609170c7365fb96e83cb2df48">refcount</a>)</div>
<div class="line"> <a name="a49"></a><a class="code" href="group__lavu__frame.html#ga0a2b687f9c1c5ed0089b01fd61227108">av_frame_unref</a>(frame);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> decoded;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a50"></a><a class="code" href="demuxing__decoding_8c.html#a85e44b1a7e74c90b84b2298caefb5f73">open_codec_context</a>(<span class="keywordtype">int</span> *stream_idx,</div>
<div class="line"> <a class="code" href="structAVFormatContext.html">AVFormatContext</a> *fmt_ctx, <span class="keyword">enum</span> <a class="code" href="group__lavu__misc.html#ga9a84bba4713dfced21a1a56163be1f48">AVMediaType</a> type)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> ret, stream_index;</div>
<div class="line"> <a class="code" href="structAVStream.html">AVStream</a> *st;</div>
<div class="line"> <a class="code" href="structAVCodecContext.html">AVCodecContext</a> *<a name="a51"></a><a class="code" href="filtering__audio_8c.html#ac2bf6798f37e95d3d2ff2d44e4ab3c12">dec_ctx</a> = NULL;</div>
<div class="line"> <a name="_a52"></a><a class="code" href="structAVCodec.html">AVCodec</a> *dec = NULL;</div>
<div class="line"> <a class="code" href="group__lavu__dict.html#ga1d7cc0833bee918994a600556410315f">AVDictionary</a> *opts = NULL;</div>
<div class="line"></div>
<div class="line"> ret = <a name="a53"></a><a class="code" href="group__lavf__decoding.html#gaa6fa468c922ff5c60a6021dcac09aff9">av_find_best_stream</a>(fmt_ctx, type, -1, -1, NULL, 0);</div>
<div class="line"> <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not find %s stream in input file '%s'\n"</span>,</div>
<div class="line"> <a name="a54"></a><a class="code" href="group__lavu__misc.html#gaf21645cfa855b2caf9699d7dc7b2d08e">av_get_media_type_string</a>(type), <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>);</div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line"> } <span class="keywordflow">else</span> {</div>
<div class="line"> stream_index = ret;</div>
<div class="line"> st = fmt_ctx-><a name="a55"></a><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[stream_index];</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* find decoder for the stream */</span></div>
<div class="line"> dec_ctx = st-><a name="a56"></a><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"> dec = <a name="a57"></a><a class="code" href="group__lavc__decoding.html#ga19a0ca553277f019dd5b0fec6e1f9dca">avcodec_find_decoder</a>(dec_ctx-><a name="a58"></a><a class="code" href="structAVCodecContext.html#adc5f65d6099fd8339c1580c091777223">codec_id</a>);</div>
<div class="line"> <span class="keywordflow">if</span> (!dec) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Failed to find %s codec\n"</span>,</div>
<div class="line"> <a class="code" href="group__lavu__misc.html#gaf21645cfa855b2caf9699d7dc7b2d08e">av_get_media_type_string</a>(type));</div>
<div class="line"> <span class="keywordflow">return</span> <a name="a59"></a><a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(EINVAL);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Init the decoders, with or without reference counting */</span></div>
<div class="line"> <a name="a60"></a><a class="code" href="group__lavu__dict.html#ga8d9c2de72b310cef8e6a28c9cd3acbbe">av_dict_set</a>(&opts, <span class="stringliteral">"refcounted_frames"</span>, <a class="code" href="demuxing__decoding_8c.html#a6022c8a609170c7365fb96e83cb2df48">refcount</a> ? <span class="stringliteral">"1"</span> : <span class="stringliteral">"0"</span>, 0);</div>
<div class="line"> <span class="keywordflow">if</span> ((ret = <a name="a61"></a><a class="code" href="group__lavc__core.html#ga11f785a188d7d9df71621001465b0f1d">avcodec_open2</a>(dec_ctx, dec, &opts)) < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Failed to open %s codec\n"</span>,</div>
<div class="line"> <a class="code" href="group__lavu__misc.html#gaf21645cfa855b2caf9699d7dc7b2d08e">av_get_media_type_string</a>(type));</div>
<div class="line"> <span class="keywordflow">return</span> ret;</div>
<div class="line"> }</div>
<div class="line"> *stream_idx = stream_index;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">int</span> <a name="a62"></a><a class="code" href="demuxing__decoding_8c.html#a5e068fc5e6dc5c59638ec235f7f6db89">get_format_from_sample_fmt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> **fmt,</div>
<div class="line"> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> i;</div>
<div class="line"> <span class="keyword">struct </span>sample_fmt_entry {</div>
<div class="line"> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sample_fmt; <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt_be, *fmt_le;</div>
<div class="line"> } sample_fmt_entries[] = {</div>
<div class="line"> { <a name="a63"></a><a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5adf0f66f21492f8fd5db6debb8b3f932a">AV_SAMPLE_FMT_U8</a>, <span class="stringliteral">"u8"</span>, <span class="stringliteral">"u8"</span> },</div>
<div class="line"> { <a name="a64"></a><a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5aea6132df57aebc3f76e10665395c46af">AV_SAMPLE_FMT_S16</a>, <span class="stringliteral">"s16be"</span>, <span class="stringliteral">"s16le"</span> },</div>
<div class="line"> { <a name="a65"></a><a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ab7ae6bb6718c07cd316778783a57a63b">AV_SAMPLE_FMT_S32</a>, <span class="stringliteral">"s32be"</span>, <span class="stringliteral">"s32le"</span> },</div>
<div class="line"> { <a name="a66"></a><a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5a5251d62cc3c7f18e56bc8e0c48a27903">AV_SAMPLE_FMT_FLT</a>, <span class="stringliteral">"f32be"</span>, <span class="stringliteral">"f32le"</span> },</div>
<div class="line"> { <a name="a67"></a><a class="code" href="group__lavu__sampfmts.html#ggaf9a51ca15301871723577c730b5865c5ae35a2a6a7593723d9fe4bcefb2876606">AV_SAMPLE_FMT_DBL</a>, <span class="stringliteral">"f64be"</span>, <span class="stringliteral">"f64le"</span> },</div>
<div class="line"> };</div>
<div class="line"> *fmt = NULL;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">for</span> (i = 0; i < <a name="a68"></a><a class="code" href="common_8h.html#a3508a98d3ee7e2c9a4841fe264cf70f7">FF_ARRAY_ELEMS</a>(sample_fmt_entries); i++) {</div>
<div class="line"> <span class="keyword">struct </span>sample_fmt_entry *entry = &sample_fmt_entries[i];</div>
<div class="line"> <span class="keywordflow">if</span> (sample_fmt == entry->sample_fmt) {</div>
<div class="line"> *fmt = <a name="a69"></a><a class="code" href="common_8h.html#a309bdca20f6a78431379fc69442d98ea">AV_NE</a>(entry->fmt_be, entry->fmt_le);</div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> fprintf(stderr,</div>
<div class="line"> <span class="stringliteral">"sample format %s is not supported as output format\n"</span>,</div>
<div class="line"> <a name="a70"></a><a class="code" href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a>(sample_fmt));</div>
<div class="line"> <span class="keywordflow">return</span> -1;</div>
<div class="line">}</div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> <a name="a71"></a><a class="code" href="demuxing__decoding_8c.html#a3c04138a5bfe5d72780bb7e82a18e627">main</a> (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)</div>
<div class="line">{</div>
<div class="line"> <span class="keywordtype">int</span> ret = 0, got_frame;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (argc != 4 && argc != 5) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"usage: %s [-refcount] input_file video_output_file audio_output_file\n"</span></div>
<div class="line"> <span class="stringliteral">"API example program to show how to read frames from an input file.\n"</span></div>
<div class="line"> <span class="stringliteral">"This program reads frames from a file, decodes them, and writes decoded\n"</span></div>
<div class="line"> <span class="stringliteral">"video frames to a rawvideo file named video_output_file, and decoded\n"</span></div>
<div class="line"> <span class="stringliteral">"audio frames to a rawaudio file named audio_output_file.\n\n"</span></div>
<div class="line"> <span class="stringliteral">"If the -refcount option is specified, the program use the\n"</span></div>
<div class="line"> <span class="stringliteral">"reference counting frame system which allows keeping a copy of\n"</span></div>
<div class="line"> <span class="stringliteral">"the data for longer than one decode call.\n"</span></div>
<div class="line"> <span class="stringliteral">"\n"</span>, argv[0]);</div>
<div class="line"> exit(1);</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">if</span> (argc == 5 && !strcmp(argv[1], <span class="stringliteral">"-refcount"</span>)) {</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a6022c8a609170c7365fb96e83cb2df48">refcount</a> = 1;</div>
<div class="line"> argv++;</div>
<div class="line"> }</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a> = argv[1];</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a> = argv[2];</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a> = argv[3];</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* register all formats and codecs */</span></div>
<div class="line"> <a name="a72"></a><a class="code" href="group__lavf__core.html#ga917265caec45ef5a0646356ed1a507e3">av_register_all</a>();</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* open input file, and allocate format context */</span></div>
<div class="line"> <span class="keywordflow">if</span> (<a name="a73"></a><a class="code" href="group__lavf__decoding.html#ga31d601155e9035d5b0e7efedc894ee49">avformat_open_input</a>(&fmt_ctx, <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>, NULL, NULL) < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not open source file %s\n"</span>, <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>);</div>
<div class="line"> exit(1);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* retrieve stream information */</span></div>
<div class="line"> <span class="keywordflow">if</span> (<a name="a74"></a><a class="code" href="group__lavf__decoding.html#gad42172e27cddafb81096939783b157bb">avformat_find_stream_info</a>(fmt_ctx, NULL) < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not find stream information\n"</span>);</div>
<div class="line"> exit(1);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#a85e44b1a7e74c90b84b2298caefb5f73">open_codec_context</a>(&<a class="code" href="demuxing__decoding_8c.html#af35f69f407b98b5244f837e25813bc11">video_stream_idx</a>, fmt_ctx, <a name="a75"></a><a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48ac1a46f59be5c6c2d3412ab172d6b8cf5">AVMEDIA_TYPE_VIDEO</a>) >= 0) {</div>
<div class="line"> video_stream = fmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[<a class="code" href="demuxing__decoding_8c.html#af35f69f407b98b5244f837e25813bc11">video_stream_idx</a>];</div>
<div class="line"> video_dec_ctx = video_stream-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"></div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a> = fopen(<a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a>, <span class="stringliteral">"wb"</span>);</div>
<div class="line"> <span class="keywordflow">if</span> (!<a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a>) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not open destination file %s\n"</span>, <a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a>);</div>
<div class="line"> ret = 1;</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* allocate image where the decoded image will be put */</span></div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a> = video_dec_ctx-><a name="a76"></a><a class="code" href="structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956">width</a>;</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a> = video_dec_ctx-><a name="a77"></a><a class="code" href="structAVCodecContext.html#a0449afd803eb107bd4dbc8b5ea22e363">height</a>;</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a> = video_dec_ctx-><a name="a78"></a><a class="code" href="structAVCodecContext.html#a0425c77b3d06d71e5db88b1d7e1b37f2">pix_fmt</a>;</div>
<div class="line"> ret = <a name="a79"></a><a class="code" href="group__lavu__picture.html#ga841e0a89a642e24141af1918a2c10448">av_image_alloc</a>(<a class="code" href="demuxing__decoding_8c.html#a0b39e94f88658412ecadb5e2116baccc">video_dst_data</a>, <a class="code" href="demuxing__decoding_8c.html#a8dbcd4dc85b9345bde18395026d0ffe4">video_dst_linesize</a>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>, <a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>, 1);</div>
<div class="line"> <span class="keywordflow">if</span> (ret < 0) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not allocate raw video buffer\n"</span>);</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"> }</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a849609cb135f2d344ff03e99610b43df">video_dst_bufsize</a> = ret;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#a85e44b1a7e74c90b84b2298caefb5f73">open_codec_context</a>(&<a class="code" href="demuxing__decoding_8c.html#a16cd83c72f483b9fa2844c5516452798">audio_stream_idx</a>, fmt_ctx, <a name="a80"></a><a class="code" href="group__lavu__misc.html#gga9a84bba4713dfced21a1a56163be1f48a7b4e33b8f30ac94d34ce8d9f7c33927a">AVMEDIA_TYPE_AUDIO</a>) >= 0) {</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a> = fmt_ctx-><a class="code" href="structAVFormatContext.html#acfefb6b6cf21e87a0dcbd1a547ba2348">streams</a>[<a class="code" href="demuxing__decoding_8c.html#a16cd83c72f483b9fa2844c5516452798">audio_stream_idx</a>];</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a> = <a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a>-><a class="code" href="structAVStream.html#a56f20051fb99339cc588cd3a07ab8c96">codec</a>;</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a> = fopen(<a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a>, <span class="stringliteral">"wb"</span>);</div>
<div class="line"> <span class="keywordflow">if</span> (!<a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a>) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not open destination file %s\n"</span>, <a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a>);</div>
<div class="line"> ret = 1;</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* dump input information to stderr */</span></div>
<div class="line"> <a name="a81"></a><a class="code" href="group__lavf__misc.html#gae2645941f2dc779c307eb6314fd39f10">av_dump_format</a>(fmt_ctx, 0, <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>, 0);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (!<a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a> && !video_stream) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not find audio or video stream in the input, aborting\n"</span>);</div>
<div class="line"> ret = 1;</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> frame = <a name="a82"></a><a class="code" href="group__lavu__frame.html#gac700017c5270c79c1e1befdeeb008b2f">av_frame_alloc</a>();</div>
<div class="line"> <span class="keywordflow">if</span> (!frame) {</div>
<div class="line"> fprintf(stderr, <span class="stringliteral">"Could not allocate frame\n"</span>);</div>
<div class="line"> ret = <a class="code" href="group__lavu__error.html#gae4bb6f165973d09584e0ec0f335f69ca">AVERROR</a>(ENOMEM);</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* initialize packet, set data to NULL, let the demuxer fill it */</span></div>
<div class="line"> <a name="a83"></a><a class="code" href="group__lavc__packet.html#gac9cb9756175b96e7441575803757fb73">av_init_packet</a>(&pkt);</div>
<div class="line"> pkt.<a name="a84"></a><a class="code" href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">data</a> = NULL;</div>
<div class="line"> pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a> = 0;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (video_stream)</div>
<div class="line"> printf(<span class="stringliteral">"Demuxing video from file '%s' into '%s'\n"</span>, <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>, <a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a>);</div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a>)</div>
<div class="line"> printf(<span class="stringliteral">"Demuxing audio from file '%s' into '%s'\n"</span>, <a class="code" href="demuxing__decoding_8c.html#ad3e56268ab4ce7a25e7a17c2e088a3c1">src_filename</a>, <a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* read frames from the file */</span></div>
<div class="line"> <span class="keywordflow">while</span> (<a name="a85"></a><a class="code" href="group__lavf__decoding.html#ga4fdb3084415a82e3810de6ee60e46a61">av_read_frame</a>(fmt_ctx, &pkt) >= 0) {</div>
<div class="line"> <a class="code" href="structAVPacket.html">AVPacket</a> orig_pkt = <a class="code" href="demuxing__decoding_8c.html#a3d4c6562f0b27cf0cacbbea5c038c090">pkt</a>;</div>
<div class="line"> <span class="keywordflow">do</span> {</div>
<div class="line"> ret = <a class="code" href="demuxing__decoding_8c.html#af8c0388188ed14c6585580b04d960a2c">decode_packet</a>(&got_frame, 0);</div>
<div class="line"> <span class="keywordflow">if</span> (ret < 0)</div>
<div class="line"> <span class="keywordflow">break</span>;</div>
<div class="line"> pkt.<a class="code" href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">data</a> += ret;</div>
<div class="line"> pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a> -= ret;</div>
<div class="line"> } <span class="keywordflow">while</span> (pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a> > 0);</div>
<div class="line"> <a name="a86"></a><a class="code" href="group__lavc__packet.html#ga63d5a489b419bd5d45cfd09091cbcbc2">av_packet_unref</a>(&orig_pkt);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* flush cached frames */</span></div>
<div class="line"> pkt.<a class="code" href="structAVPacket.html#aaf4fe58dfcc7c232c1f2268b539d8367">data</a> = NULL;</div>
<div class="line"> pkt.<a class="code" href="structAVPacket.html#a4d1ea19f63eb107111fd650ca514d1f4">size</a> = 0;</div>
<div class="line"> <span class="keywordflow">do</span> {</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#af8c0388188ed14c6585580b04d960a2c">decode_packet</a>(&got_frame, 1);</div>
<div class="line"> } <span class="keywordflow">while</span> (got_frame);</div>
<div class="line"></div>
<div class="line"> printf(<span class="stringliteral">"Demuxing succeeded.\n"</span>);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (video_stream) {</div>
<div class="line"> printf(<span class="stringliteral">"Play the output video file with the command:\n"</span></div>
<div class="line"> <span class="stringliteral">"ffplay -f rawvideo -pix_fmt %s -video_size %dx%d %s\n"</span>,</div>
<div class="line"> <a class="code" href="pixdesc_8h.html#ab92e2a8a9b58c982560c49df9f01e47e">av_get_pix_fmt_name</a>(<a class="code" href="demuxing__decoding_8c.html#a7331e302ea7bb48e0b605a069576e135">pix_fmt</a>), <a class="code" href="demuxing__decoding_8c.html#a2474a5474cbff19523a51eb1de01cda4">width</a>, <a class="code" href="demuxing__decoding_8c.html#ad12fc34ce789bce6c8a05d8a17138534">height</a>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a780830fc3afc836feb64d80eef4185b5">video_dst_filename</a>);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#ab269038fe8cd6f8fa4ccec9eaf939345">audio_stream</a>) {</div>
<div class="line"> <span class="keyword">enum</span> <a class="code" href="group__lavu__sampfmts.html#gaf9a51ca15301871723577c730b5865c5">AVSampleFormat</a> sfmt = <a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>-><a name="a87"></a><a class="code" href="structAVCodecContext.html#a1bdba69ea111e2a9d03fdaa7a46a4c45">sample_fmt</a>;</div>
<div class="line"> <span class="keywordtype">int</span> n_channels = <a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>-><a name="a88"></a><a class="code" href="structAVCodecContext.html#ac1e6c2cd1269caa7570575725c682a49">channels</a>;</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt;</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> (<a name="a89"></a><a class="code" href="group__lavu__sampfmts.html#ga06ba8a64dc4382c422789a5d0b6bf592">av_sample_fmt_is_planar</a>(sfmt)) {</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">char</span> *packed = <a class="code" href="group__lavu__sampfmts.html#ga31b9d149b2de9821a65f4f5612970838">av_get_sample_fmt_name</a>(sfmt);</div>
<div class="line"> printf(<span class="stringliteral">"Warning: the sample format the decoder produced is planar "</span></div>
<div class="line"> <span class="stringliteral">"(%s). This example will output the first channel only.\n"</span>,</div>
<div class="line"> packed ? packed : <span class="stringliteral">"?"</span>);</div>
<div class="line"> sfmt = <a name="a90"></a><a class="code" href="group__lavu__sampfmts.html#ga7817ec0eff4dc6fc0962f31e6d138bca">av_get_packed_sample_fmt</a>(sfmt);</div>
<div class="line"> n_channels = 1;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">if</span> ((ret = <a class="code" href="demuxing__decoding_8c.html#a5e068fc5e6dc5c59638ec235f7f6db89">get_format_from_sample_fmt</a>(&fmt, sfmt)) < 0)</div>
<div class="line"> <span class="keywordflow">goto</span> end;</div>
<div class="line"></div>
<div class="line"> printf(<span class="stringliteral">"Play the output audio file with the command:\n"</span></div>
<div class="line"> <span class="stringliteral">"ffplay -f %s -ac %d -ar %d %s\n"</span>,</div>
<div class="line"> fmt, n_channels, <a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>-><a name="a91"></a><a class="code" href="structAVCodecContext.html#a8ff0b000c463361e234af48d03aadfc0">sample_rate</a>,</div>
<div class="line"> <a class="code" href="demuxing__decoding_8c.html#a9f79f9440c018d4eb8448d849f35f467">audio_dst_filename</a>);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line">end:</div>
<div class="line"> <a name="a92"></a><a class="code" href="group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f">avcodec_close</a>(video_dec_ctx);</div>
<div class="line"> <a class="code" href="group__lavc__core.html#gaf4daa92361efb3523ef5afeb0b54077f">avcodec_close</a>(<a class="code" href="demuxing__decoding_8c.html#adecce4fda9b9d4fc0d6713d461755cfd">audio_dec_ctx</a>);</div>
<div class="line"> <a name="a93"></a><a class="code" href="group__lavf__decoding.html#gae804b99aec044690162b8b9b110236a4">avformat_close_input</a>(&fmt_ctx);</div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a>)</div>
<div class="line"> fclose(<a class="code" href="demuxing__decoding_8c.html#ac3ad9da7180c9a9baa85e968eb6937e3">video_dst_file</a>);</div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a>)</div>
<div class="line"> fclose(<a class="code" href="demuxing__decoding_8c.html#af0d7c67df6575ed6b3b7de4d843ed7a6">audio_dst_file</a>);</div>
<div class="line"> <a name="a94"></a><a class="code" href="group__lavu__frame.html#ga979d73f3228814aee56aeca0636e37cc">av_frame_free</a>(&frame);</div>
<div class="line"> <a name="a95"></a><a class="code" href="group__lavu__mem.html#ga0c9096f498624c525aa2315b8a20c411">av_free</a>(<a class="code" href="demuxing__decoding_8c.html#a0b39e94f88658412ecadb5e2116baccc">video_dst_data</a>[0]);</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">return</span> ret < 0;</div>
<div class="line">}</div>
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