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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="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment">// Use of this source code is governed by a BSD-style</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment">// license that can be found in the LICENSE file or at</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/muxer.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/fourccs.h&quot;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/media_sample.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &quot;packager/media/base/media_stream.h&quot;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;Muxer::Muxer(<span class="keyword">const</span> MuxerOptions&amp; options)</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; : options_(options),</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; initialized_(false),</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; encryption_key_source_(NULL),</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; max_sd_pixels_(0),</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; clear_lead_in_seconds_(0),</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; crypto_period_duration_in_seconds_(0),</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; protection_scheme_(FOURCC_NULL),</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; cancelled_(false),</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; clock_(NULL) {}</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;Muxer::~Muxer() {}</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a246cda6ea92a24b2c5b504678143ed4e"> 29</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a246cda6ea92a24b2c5b504678143ed4e">Muxer::SetKeySource</a>(<a class="code" href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">KeySource</a>* encryption_key_source,</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; uint32_t max_sd_pixels,</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; <span class="keywordtype">double</span> clear_lead_in_seconds,</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keywordtype">double</span> crypto_period_duration_in_seconds,</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; FourCC protection_scheme) {</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; DCHECK(encryption_key_source);</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; encryption_key_source_ = encryption_key_source;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; max_sd_pixels_ = max_sd_pixels;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; clear_lead_in_seconds_ = clear_lead_in_seconds;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; crypto_period_duration_in_seconds_ = crypto_period_duration_in_seconds;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; protection_scheme_ = protection_scheme;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;}</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5"> 42</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5">Muxer::AddStream</a>(<a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">MediaStream</a>* stream) {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; DCHECK(stream);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; stream-&gt;<a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html#a05b7188c263dc71b00635415bbdfd37f">Connect</a>(<span class="keyword">this</span>);</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; streams_.push_back(stream);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;}</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4"> 48</a></span>&#160;<a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4">Muxer::Run</a>() {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; DCHECK(!streams_.empty());</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="comment">// Start the streams.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordflow">for</span> (std::vector&lt;MediaStream*&gt;::iterator it = streams_.begin();</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; it != streams_.end();</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; ++it) {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; status = (*it)-&gt;Start(MediaStream::kPull);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordflow">if</span> (!status.ok())</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; <span class="keywordflow">return</span> status;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; }</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; uint32_t current_stream_id = 0;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordflow">while</span> (status.ok()) {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordflow">if</span> (cancelled_)</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">return</span> <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a>(error::CANCELLED, <span class="stringliteral">&quot;muxer run cancelled&quot;</span>);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; scoped_refptr&lt;MediaSample&gt; sample;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; status = streams_[current_stream_id]-&gt;PullSample(&amp;sample);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">if</span> (!status.ok())</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; status = AddSample(streams_[current_stream_id], sample);</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; <span class="comment">// Switch to next stream if the current stream is ready for fragmentation.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">if</span> (status.error_code() == error::FRAGMENT_FINALIZED) {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; current_stream_id = (current_stream_id + 1) % streams_.size();</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; status.Clear();</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160; }</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="comment">// Finalize the muxer after reaching end of stream.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">return</span> status.error_code() == error::END_OF_STREAM ? Finalize() : status;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;}</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b"> 82</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b">Muxer::Cancel</a>() {</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160; cancelled_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160;}</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;</div>
<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148"> 86</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148">Muxer::SetMuxerListener</a>(scoped_ptr&lt;MuxerListener&gt; muxer_listener) {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; muxer_listener_ = muxer_listener.Pass();</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;}</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a"> 90</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a">Muxer::SetProgressListener</a>(</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; scoped_ptr&lt;ProgressListener&gt; progress_listener) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; progress_listener_ = progress_listener.Pass();</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> Muxer::AddSample(<span class="keyword">const</span> <a class="code" href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">MediaStream</a>* stream,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; scoped_refptr&lt;MediaSample&gt; sample) {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; DCHECK(std::find(streams_.begin(), streams_.end(), stream) != streams_.end());</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; <span class="keywordflow">if</span> (!initialized_) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <a class="code" href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">Status</a> status = Initialize();</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; <span class="keywordflow">if</span> (!status.ok())</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; <span class="keywordflow">return</span> status;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160; initialized_ = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">if</span> (sample-&gt;end_of_stream()) {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160; <span class="comment">// EOS sample should be sent only when the sample was pushed from Demuxer</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; <span class="comment">// to Muxer. In this case, there should be only one stream in Muxer.</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; DCHECK_EQ(1u, streams_.size());</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; <span class="keywordflow">return</span> Finalize();</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sample-&gt;is_encrypted()) {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Unable to multiplex encrypted media sample&quot;</span>;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> Status(error::INTERNAL_ERROR, <span class="stringliteral">&quot;Encrypted media sample.&quot;</span>);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160; }</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; <span class="keywordflow">return</span> DoAddSample(stream, sample);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160;}</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_aa8ea4384b819187c51f67ad901aca148"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa8ea4384b819187c51f67ad901aca148">edash_packager::media::Muxer::SetMuxerListener</a></div><div class="ttdeci">void SetMuxerListener(scoped_ptr&lt; MuxerListener &gt; muxer_listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00086">muxer.cc:86</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a246cda6ea92a24b2c5b504678143ed4e"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a246cda6ea92a24b2c5b504678143ed4e">edash_packager::media::Muxer::SetKeySource</a></div><div class="ttdeci">void SetKeySource(KeySource *encryption_key_source, uint32_t max_sd_pixels, double clear_lead_in_seconds, double crypto_period_duration_in_seconds, FourCC protection_scheme)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00029">muxer.cc:29</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Status_html"><div class="ttname"><a href="../../d2/d90/classedash__packager_1_1media_1_1Status.html">edash_packager::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00075">status.h:75</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a04959bfe66cdb16053326938df9d445a"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a04959bfe66cdb16053326938df9d445a">edash_packager::media::Muxer::SetProgressListener</a></div><div class="ttdeci">void SetProgressListener(scoped_ptr&lt; ProgressListener &gt; progress_listener)</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00090">muxer.cc:90</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1KeySource_html"><div class="ttname"><a href="../../d9/d8b/classedash__packager_1_1media_1_1KeySource.html">edash_packager::media::KeySource</a></div><div class="ttdoc">KeySource is responsible for encryption key acquisition. </div><div class="ttdef"><b>Definition:</b> <a href="../../dc/d3f/key__source_8h_source.html#l00031">key_source.h:31</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_aa2ef293cdb921d97bb39d038f29da8c4"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#aa2ef293cdb921d97bb39d038f29da8c4">edash_packager::media::Muxer::Run</a></div><div class="ttdeci">Status Run()</div><div class="ttdoc">Drive the remuxing from muxer side (pull). </div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00048">muxer.cc:48</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_a77c7a214383f64f822d479d226750bf5"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#a77c7a214383f64f822d479d226750bf5">edash_packager::media::Muxer::AddStream</a></div><div class="ttdeci">void AddStream(MediaStream *stream)</div><div class="ttdoc">Add video/audio stream. </div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00042">muxer.cc:42</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MediaStream_html_a05b7188c263dc71b00635415bbdfd37f"><div class="ttname"><a href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html#a05b7188c263dc71b00635415bbdfd37f">edash_packager::media::MediaStream::Connect</a></div><div class="ttdeci">void Connect(Muxer *muxer)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d15/media__stream_8cc_source.html#l00055">media_stream.cc:55</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1Muxer_html_abecb4fbe4bcd5257857e397f7f3d096b"><div class="ttname"><a href="../../d4/d1d/classedash__packager_1_1media_1_1Muxer.html#abecb4fbe4bcd5257857e397f7f3d096b">edash_packager::media::Muxer::Cancel</a></div><div class="ttdeci">void Cancel()</div><div class="ttdef"><b>Definition:</b> <a href="../../d9/db9/muxer_8cc_source.html#l00082">muxer.cc:82</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1MediaStream_html"><div class="ttname"><a href="../../d2/dfd/classedash__packager_1_1media_1_1MediaStream.html">edash_packager::media::MediaStream</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d93/media__stream_8h_source.html#l00026">media_stream.h:26</a></div></div>
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