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<div class="title">mp3-stream.hpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="preprocessor">#pragma once</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160; </div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="preprocessor">#include &lt;string&gt;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160; </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="preprocessor">#include &quot;audio/audio.hpp&quot;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="preprocessor">#include &quot;engine/file.hpp&quot;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160; </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceblit.html">blit</a> {</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno"><a class="line" href="classblit_1_1MP3Stream.html"> 10</a></span>&#160; <span class="keyword">class </span><a class="code" href="classblit_1_1MP3Stream.html">MP3Stream</a> final {</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160; <span class="keyword">public</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">enum</span> PlayFlags {</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160; from_start = (1 &lt;&lt; 0),</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160; loop = (1 &lt;&lt; 1)</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160; };</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160; </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160; <a class="code" href="classblit_1_1MP3Stream.html">MP3Stream</a>();</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; ~<a class="code" href="classblit_1_1MP3Stream.html">MP3Stream</a>();</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160; <span class="keywordtype">bool</span> load(std::string filename, <span class="keywordtype">bool</span> do_duration_calc = <span class="keyword">false</span>);</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160; <span class="keywordtype">void</span> play(<span class="keywordtype">int</span> channel, <span class="keywordtype">int</span> flags = 0);</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="keywordtype">void</span> pause();</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="keywordtype">void</span> restart();</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; <span class="keywordtype">bool</span> get_playing() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160; <span class="keywordtype">int</span> get_play_flags() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160; </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160; <span class="keywordtype">void</span> update();</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160; </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> get_current_sample() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160; <span class="keywordtype">int</span> get_duration_ms() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160; </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; <span class="keywordtype">void</span> decode(<span class="keywordtype">int</span> buf_index);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keywordtype">int</span> calc_duration();</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keywordtype">void</span> read(int32_t len);</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; <span class="keyword">static</span> <span class="keywordtype">void</span> static_callback(<a class="code" href="structblit_1_1AudioChannel.html">AudioChannel</a> &amp;channel);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; <span class="keywordtype">void</span> callback(<a class="code" href="structblit_1_1AudioChannel.html">AudioChannel</a> &amp;channel);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="comment">// file io</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <a class="code" href="classblit_1_1File.html">blit::File</a> file;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; uint32_t file_offset = 0;</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"> 48</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> file_buffer_size = 1024 * 4;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; uint8_t *file_buffer = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; int32_t file_buffer_filled = 0;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; <span class="keywordtype">int</span> channel = -1;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; <span class="keywordtype">int</span> play_flags = 0;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; <span class="comment">// decoding</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; <span class="keywordtype">void</span> *mp3dec = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keywordtype">bool</span> need_convert = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">int</span> audio_buf_size = 1152;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; int16_t audio_buf[2][audio_buf_size];</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; int16_t *current_sample = <span class="keyword">nullptr</span>, *end_sample = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <span class="keywordtype">int</span> data_size[2]{};</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordtype">int</span> cur_audio_buf = 0;</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> buffered_samples = 0;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; <span class="keywordtype">int</span> duration_ms = 0;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; };</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160;}</div>
<div class="ttc" id="aclassblit_1_1File_html"><div class="ttname"><a href="classblit_1_1File.html">blit::File</a></div><div class="ttdef"><b>Definition:</b> file.hpp:48</div></div>
<div class="ttc" id="aclassblit_1_1MP3Stream_html"><div class="ttname"><a href="classblit_1_1MP3Stream.html">blit::MP3Stream</a></div><div class="ttdef"><b>Definition:</b> mp3-stream.hpp:10</div></div>
<div class="ttc" id="anamespaceblit_html"><div class="ttname"><a href="namespaceblit.html">blit</a></div><div class="ttdef"><b>Definition:</b> audio.cpp:10</div></div>
<div class="ttc" id="astructblit_1_1AudioChannel_html"><div class="ttname"><a href="structblit_1_1AudioChannel.html">blit::AudioChannel</a></div><div class="ttdef"><b>Definition:</b> audio.hpp:64</div></div>
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