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<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_c6ada2450b25ab5438a4dba6c9b890af.html">base</a></li> </ul>
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<div class="title">media_handler.cc</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2017 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/base/media_handler.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a name="l00012"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d"> 12</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d">MediaHandler::SetHandler</a>(<span class="keywordtype">size_t</span> output_stream_index,</div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  std::shared_ptr<MediaHandler> handler) {</div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  <span class="keywordflow">if</span> (output_handlers_.find(output_stream_index) != output_handlers_.end()) {</div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::ALREADY_EXISTS,</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="stringliteral">"The handler at the specified index already exists."</span>);</div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  }</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  output_handlers_[output_stream_index] =</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  std::make_pair(handler, handler->num_input_streams_++);</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  next_output_stream_index_ = output_stream_index + 1;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> }</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
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<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#aed0da512bbd998ec9d0a5c019ad17acb"> 24</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#aed0da512bbd998ec9d0a5c019ad17acb">MediaHandler::Initialize</a>() {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">if</span> (initialized_)</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> status = <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0e05325d62bfb66318301c1ed790a46e">InitializeInternal</a>();</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span>& pair : output_handlers_) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (!<a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a71df357be46c02dc0e71b2eabb034c10">ValidateOutputStreamIndex</a>(pair.first))</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::INVALID_ARGUMENT, <span class="stringliteral">"Invalid output stream index"</span>);</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  status = pair.second.first->Initialize();</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">if</span> (!status.ok())</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordflow">return</span> status;</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  }</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  initialized_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> }</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
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<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a69a31b8ec1b85fd4790c7c2013c69a73"> 41</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a69a31b8ec1b85fd4790c7c2013c69a73">MediaHandler::OnFlushRequest</a>(<span class="keywordtype">size_t</span> input_stream_index) {</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// The default implementation treats the output stream index to be identical</span></div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// to the input stream index, which is true for most handlers.</span></div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> output_stream_index = input_stream_index;</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ad5001bf12073101a949b062943769f5b">FlushDownstream</a>(output_stream_index);</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> }</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a71df357be46c02dc0e71b2eabb034c10"> 48</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a71df357be46c02dc0e71b2eabb034c10">MediaHandler::ValidateOutputStreamIndex</a>(<span class="keywordtype">size_t</span> stream_index)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">return</span> stream_index < num_input_streams_;</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> }</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
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<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca"> 52</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca">MediaHandler::Dispatch</a>(std::unique_ptr<StreamData> stream_data) {</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">size_t</span> output_stream_index = stream_data->stream_index;</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">auto</span> handler_it = output_handlers_.find(output_stream_index);</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">if</span> (handler_it == output_handlers_.end()) {</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::NOT_FOUND,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="stringliteral">"No output handler exist at the specified index."</span>);</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  }</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  stream_data->stream_index = handler_it->second.second;</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">return</span> handler_it->second.first->Process(std::move(stream_data));</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> }</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
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<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ad5001bf12073101a949b062943769f5b"> 63</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ad5001bf12073101a949b062943769f5b">MediaHandler::FlushDownstream</a>(<span class="keywordtype">size_t</span> output_stream_index) {</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">auto</span> handler_it = output_handlers_.find(output_stream_index);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (handler_it == output_handlers_.end()) {</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::NOT_FOUND,</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="stringliteral">"No output handler exist at the specified index."</span>);</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> handler_it->second.first->OnFlushRequest(handler_it->second.second);</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> }</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a71df357be46c02dc0e71b2eabb034c10"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a71df357be46c02dc0e71b2eabb034c10">shaka::media::MediaHandler::ValidateOutputStreamIndex</a></div><div class="ttdeci">virtual bool ValidateOutputStreamIndex(size_t stream_index) const </div><div class="ttdoc">Validate if the stream at the specified index actually exists. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00048">media_handler.cc:48</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a0e05325d62bfb66318301c1ed790a46e"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0e05325d62bfb66318301c1ed790a46e">shaka::media::MediaHandler::InitializeInternal</a></div><div class="ttdeci">virtual Status InitializeInternal()=0</div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_accd62dd4def920571f95f4e1a98ab7ca"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#accd62dd4def920571f95f4e1a98ab7ca">shaka::media::MediaHandler::Dispatch</a></div><div class="ttdeci">Status Dispatch(std::unique_ptr< StreamData > stream_data)</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00052">media_handler.cc:52</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a69a31b8ec1b85fd4790c7c2013c69a73"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a69a31b8ec1b85fd4790c7c2013c69a73">shaka::media::MediaHandler::OnFlushRequest</a></div><div class="ttdeci">virtual Status OnFlushRequest(size_t input_stream_index)</div><div class="ttdoc">Event handler for flush request at the specific input stream index. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00041">media_handler.cc:41</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_ad5001bf12073101a949b062943769f5b"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#ad5001bf12073101a949b062943769f5b">shaka::media::MediaHandler::FlushDownstream</a></div><div class="ttdeci">Status FlushDownstream(size_t output_stream_index)</div><div class="ttdoc">Flush the downstream connected at the specified output stream index. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00063">media_handler.cc:63</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1Status_html"><div class="ttname"><a href="../../d0/d93/classshaka_1_1media_1_1Status.html">shaka::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00085">status.h:85</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_a0fac1fe2d593e78d47244acdfa21759d"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#a0fac1fe2d593e78d47244acdfa21759d">shaka::media::MediaHandler::SetHandler</a></div><div class="ttdeci">Status SetHandler(size_t output_stream_index, std::shared_ptr< MediaHandler > handler)</div><div class="ttdoc">Connect downstream handler at the specified output stream index. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00012">media_handler.cc:12</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1MediaHandler_html_aed0da512bbd998ec9d0a5c019ad17acb"><div class="ttname"><a href="../../da/dfd/classshaka_1_1media_1_1MediaHandler.html#aed0da512bbd998ec9d0a5c019ad17acb">shaka::media::MediaHandler::Initialize</a></div><div class="ttdeci">Status Initialize()</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/de9/media__handler_8cc_source.html#l00024">media_handler.cc:24</a></div></div>
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