Initial audio support (switchbrew#43)

Initial audio support
MrKcyre · Feb 17, 2018 · 0e40828 · 0e40828
1 parent c22655e
commit 0e40828
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diff --git a/nx/include/switch.h b/nx/include/switch.h
@@ -32,6 +32,7 @@ extern "C" {
 #include "switch/services/acc.h"
 #include "switch/services/apm.h"
 #include "switch/services/applet.h"
+#include "switch/services/audout.h"
 #include "switch/services/bsd.h"
 #include "switch/services/fatal.h"
 #include "switch/services/usb.h"

diff --git a/nx/include/switch/services/audout.h b/nx/include/switch/services/audout.h
@@ -0,0 +1,61 @@
+/**
+ * @file audout.h
+ * @brief Audio output service.
+ * @author hexkyz
+ * @copyright libnx Authors
+ */
+#pragma once
+
+#include "../types.h"
+
+typedef enum {
+    PcmFormat_Invalid = 0,
+    PcmFormat_INT8 = 1,
+    PcmFormat_INT16 = 2,
+    PcmFormat_INT24 = 3,
+    PcmFormat_INT32 = 4,
+    PcmFormat_FLOAT = 5,
+    PcmFormat_ADPCM = 6,
+} PcmFormat;
+
+typedef enum {
+    AudioOutState_Started = 0,
+    AudioOutState_Stopped = 1,
+} AudioOutState;
+
+/// Audio output buffer format
+typedef struct AudioOutBuffer AudioOutBuffer;
+
+struct AudioOutBuffer
+{
+    AudioOutBuffer* next;       ///< Next buffer.
+    void* buffer;               ///< Sample buffer.
+    u64 buffer_size;            ///< Sample buffer size.
+    u64 data_size;              ///< Size of data inside the buffer.
+    u64 data_offset;            ///< Offset of data inside the buffer.
+};
+
+Result audoutInitialize(void);
+void audoutExit(void);
+
+Result audoutListAudioOuts(char *DeviceNames, u32 *DeviceNamesCount);
+Result audoutOpenAudioOut(const char *DeviceNameIn, char *DeviceNameOut, u32 SampleRateIn, u32 ChannelCountIn, u32 *SampleRateOut, u32 *ChannelCountOut, PcmFormat *Format, AudioOutState *State);
+Result audoutGetAudioOutState(AudioOutState *State);
+Result audoutStartAudioOut(void);
+Result audoutStopAudioOut(void);
+Result audoutAppendAudioOutBuffer(AudioOutBuffer *Buffer);
+Result audoutGetReleasedAudioOutBuffer(AudioOutBuffer *Buffer, u32 *ReleasedBuffersCount);
+Result audoutContainsAudioOutBuffer(AudioOutBuffer *Buffer, bool *ContainsBuffer);
+
+/**
+ * @brief Submits an audio sample data buffer for playing.
+ * @param source AudioOutBuffer containing the source sample data to be played.
+ * @param released AudioOutBuffer to receive the last played buffer.
+ */
+void audoutPlayBuffer(AudioOutBuffer *source, AudioOutBuffer *released);
+
+/// These return the state associated with the currently active audio output device.
+u32 audoutGetSampleRate(void);                      ///< Supported sample rate (48000Hz).
+u32 audoutGetChannelCount(void);                    ///< Supported channel count (2 channels).
+PcmFormat audoutGetPcmFormat(void);                 ///< Supported PCM format (INT16).
+AudioOutState audoutGetDeviceState(void);           ///< Initial device state (stopped).