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https://github.com/mackron/miniaudio.git
synced 2026-04-22 00:06:59 +02:00
David Reid
349 lines
14 KiB
HTML
349 lines
14 KiB
HTML
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<title>miniaudio - A single file audio playback and capture library.</title>
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<meta name="description" content="miniaudio is a single file audio playback and capture library written in C.">
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<body style="margin:0; padding:0">
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<div style="background-color:#003800; color:#bfa792;">
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<div style="max-width:100%; width:100%; margin:0 auto;">
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<table class="header-link-table" style="border-collapse:collapse; border-spacing:0; padding:0; padding-right:1em;">
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<td style="padding:0.75em; width:100%; text-align:left;">
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<tr>
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<td style="vertical-align:bottom; padding:0em; padding-right:2em;"><a href="../../index.html"><img src="../../img/logo1_large_white.png" style="height:24px; min-width:100%;"></a></td>
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<td><a href="../manual/index.html">Documentation</a></td>
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<td><a href="index.html">Examples</a></td>
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</tr>
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</table>
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</td>
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<td style="padding:0.1em; width:25%; text-align:right; vertical-align:center;">
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<a href="https://www.reddit.com/r/miniaudio"><img src="../../img/reddit_white.svg" style="margin:0; padding:0; height:40px; width:40px;"></a>
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</td>
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<td style="padding:0.1em; width:25%; text-align:right; vertical-align:center;">
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<a href="https://discord.gg/9vpqbjU"><img src="../../img/Discord-Logo-White.svg" style="margin:0; padding:0; height:32px; width:32px;"></a>
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</td>
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<td style="padding:0.1em; width:25%; text-align:right; vertical-align:center;">
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<a href="https://twitter.com/mackron"><img src="../../img/twitter_white.png" style="margin:0; padding:0; height:32px; width:32px;"></a>
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</td>
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<td style="padding:0.1em; padding-right:1em; width:25%; text-align:right; vertical-align:center;">
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<a href="https://github.com/mackron/miniaudio"><img src="../../img/github_white.png" style="margin:0; padding:0; height:24px; width:24px;"></a>
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</td>
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</table>
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</div>
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</div>
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<div style="background-color:#fff; padding-bottom:0em; border-top:solid 1px #003800; background-color:#eee;">
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<table border="0" style="margin:0 auto; width:100%; border-collapse:collapse; border:solid 0px #000; table-layout:fixed;"><tr>
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<td valign="top" style="width:20em; padding:0; margin:0; border-right:solid 0px #000;"><div style="position:relative; height:100%; width:100%; border:solid 0px #000; padding:0; margin:0;">
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<a href="../index.html" class="doc-navigation">Documentation Home</a><a href="../manual/index.html" class="doc-navigation">Programming Manual</a><a href="index.html" class="doc-navigation ">Examples</a><a href="custom_backend.html" class="doc-navigation doc-navigation-l1 ">Custom Backend</a><a href="custom_decoder.html" class="doc-navigation doc-navigation-l1 ">Custom Decoder</a><a href="custom_decoder_engine.html" class="doc-navigation doc-navigation-l1 ">Custom Decoder Engine</a><a href="data_source_chaining.html" class="doc-navigation doc-navigation-l1 ">Data Source Chaining</a><a href="duplex_effect.html" class="doc-navigation doc-navigation-l1 ">Duplex Effect</a><a href="engine_advanced.html" class="doc-navigation doc-navigation-l1 ">Engine Advanced</a><a href="engine_effects.html" class="doc-navigation doc-navigation-l1 ">Engine Effects</a><a href="engine_hello_world.html" class="doc-navigation doc-navigation-l1 ">Engine Hello World</a><a href="engine_sdl.html" class="doc-navigation doc-navigation-l1 ">Engine Sdl</a><a href="engine_steamaudio.html" class="doc-navigation doc-navigation-l1 ">Engine Steamaudio</a><a href="node_graph.html" class="doc-navigation doc-navigation-l1 ">Node Graph</a><a href="resource_manager.html" class="doc-navigation doc-navigation-l1 ">Resource Manager</a><a href="resource_manager_advanced.html" class="doc-navigation doc-navigation-l1 ">Resource Manager Advanced</a><a href="simple_capture.html" class="doc-navigation doc-navigation-l1 ">Simple Capture</a><a href="simple_duplex.html" class="doc-navigation doc-navigation-l1 ">Simple Duplex</a><a href="simple_enumeration.html" class="doc-navigation doc-navigation-l1 ">Simple Enumeration</a><a href="simple_loopback.html" class="doc-navigation doc-navigation-l1 ">Simple Loopback</a><a href="simple_looping.html" class="doc-navigation doc-navigation-l1 ">Simple Looping</a><a href="simple_mixing.html" class="doc-navigation doc-navigation-l1 ">Simple Mixing</a><a href="simple_playback.html" class="doc-navigation doc-navigation-l1 doc-navigation-active">Simple Playback</a><a href="simple_playback_sine.html" class="doc-navigation doc-navigation-l1 ">Simple Playback Sine</a><a href="../api/index.html" class="doc-navigation" style="border-bottom:none;">API Reference</a></div></td><td valign="top" style="padding:1em; border-left:solid 1px #bbb;">
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<h1>Simple Playback</h1><p>
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Demonstrates how to load a sound file and play it back using the low-level API.
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</p>
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<p>
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The low-level API uses a callback to deliver audio between the application and miniaudio for playback or recording. When
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in playback mode, as in this example, the application sends raw audio data to miniaudio which is then played back through
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the default playback device as defined by the operating system.
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</p>
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<p>
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This example uses the <span style="font-family:monospace;">ma_decoder</span> API to load a sound and play it back. The decoder is entirely decoupled from the
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device and can be used independently of it. This example only plays back a single sound file, but it's possible to play
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back multiple files by simple loading multiple decoders and mixing them (do not create multiple devices to do this). See
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the simple_mixing example for how best to do this.</p>
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<div style="font-family:monospace; border:solid 1px #003800; border-left:solid 0.5em #003800; margin:1em 0em; width:100%;"><pre style="margin:0.5em 1em; padding:0; line-height:125%; overflow-x:auto;">
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<span style="color:#666666">#define</span> MINIAUDIO_IMPLEMENTATION
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<span style="color:#666666">#include</span> <span style="color:#cc3300">"../miniaudio.h"</span>
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<span style="color:#666666">#include</span> <span style="color:#cc3300"><stdio.h></span>
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<span style="color:#0033ff">void</span> data_callback(<span style="color:#0099cc">ma_device</span>* pDevice, <span style="color:#0033ff">void</span>* pOutput, <span style="color:#0033ff">const</span> <span style="color:#0033ff">void</span>* pInput, <span style="color:#0099cc">ma_uint32</span> frameCount)
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{
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<span style="color:#0099cc">ma_decoder</span>* pDecoder = (<span style="color:#0099cc">ma_decoder</span>*)pDevice->pUserData;
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<span style="color:#0033ff">if</span> (pDecoder == NULL) {
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<span style="color:#0033ff">return</span>;
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}
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ma_decoder_read_pcm_frames(pDecoder, pOutput, frameCount, NULL);
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(<span style="color:#0033ff">void</span>)pInput;
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}
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<span style="color:#0033ff">int</span> main(<span style="color:#0033ff">int</span> argc, <span style="color:#0033ff">char</span>** argv)
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{
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<span style="color:#0099cc">ma_result</span> result;
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<span style="color:#0099cc">ma_decoder</span> decoder;
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<span style="color:#0099cc">ma_device_config</span> deviceConfig;
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<span style="color:#0099cc">ma_device</span> device;
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<span style="color:#0033ff">if</span> (argc < 2) {
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printf(<span style="color:#cc3300">"No input file.\n"</span>);
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<span style="color:#0033ff">return</span> -1;
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}
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result = ma_decoder_init_file(argv[1], NULL, &decoder);
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<span style="color:#0033ff">if</span> (result != MA_SUCCESS) {
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printf(<span style="color:#cc3300">"Could not load file: %s\n"</span>, argv[1]);
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<span style="color:#0033ff">return</span> -2;
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}
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deviceConfig = ma_device_config_init(ma_device_type_playback);
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deviceConfig.playback.format = decoder.outputFormat;
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deviceConfig.playback.channels = decoder.outputChannels;
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deviceConfig.sampleRate = decoder.outputSampleRate;
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deviceConfig.dataCallback = data_callback;
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deviceConfig.pUserData = &decoder;
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<span style="color:#0033ff">if</span> (ma_device_init(NULL, &deviceConfig, &device) != MA_SUCCESS) {
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printf(<span style="color:#cc3300">"Failed to open playback device.\n"</span>);
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ma_decoder_uninit(&decoder);
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<span style="color:#0033ff">return</span> -3;
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}
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<span style="color:#0033ff">if</span> (ma_device_start(&device) != MA_SUCCESS) {
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printf(<span style="color:#cc3300">"Failed to start playback device.\n"</span>);
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ma_device_uninit(&device);
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ma_decoder_uninit(&decoder);
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<span style="color:#0033ff">return</span> -4;
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}
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printf(<span style="color:#cc3300">"Press Enter to quit..."</span>);
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getchar();
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ma_device_uninit(&device);
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ma_decoder_uninit(&decoder);
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<span style="color:#0033ff">return</span> 0;
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}
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</pre></div></td>
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</tr></table>
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</div>
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<table style="margin:0 auto; padding:1em 0px; text-align:center;">
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<tr>
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<td style="vertical-align:center;"><a style="padding:0;" href="https://www.reddit.com/r/miniaudio"><img src="../../img/reddit_white.svg" style="margin:0; padding:0; height:40px; width:40px;"></a></td>
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<td style="vertical-align:center;"><a style="padding:0;" href="https://discord.gg/9vpqbjU"><img src="../../img/Discord-Logo-White.svg" style="padding:0; height:32px; width:32px;"></a></td>
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<td style="vertical-align:center;"><a style="padding:0;" href="https://twitter.com/mackron"><img src="../../img/twitter_white.png" style="padding:0; height:32px; width:32px;"></a></td>
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<td style="vertical-align:center;"><a style="padding:0;" href="https://github.com/mackron/miniaudio"><img src="../../img/github_white.png" style="padding:0; height:24px; width:24px;"></a></td>
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</tr>
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</table>
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<div style="color:#e0d7cf; font-size:9pt; padding:2em 0px; text-align:center;">
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Copyright © 2022 David Reid<br/>
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Developed by David Reid - <a class="footer-link" href="mailto:mackron@gmail.com">mackron@gmail.com</a>
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</div>
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</body>
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