Portaudio android opensles implementation

include/pa_opensles.h

@@ -0,0 +1,78 @@
+#ifndef PA_OPENSLES_H
+#define PA_OPENSLES_H
+
+/*
+ * $Id:
+ * PortAudio Portable Real-Time Audio Library
+ * Android OpenSLES-specific extensions
+ *
+ * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files
+ * (the "Software"), to deal in the Software without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * The text above constitutes the entire PortAudio license; however,
+ * the PortAudio community also makes the following non-binding requests:
+ *
+ * Any person wishing to distribute modifications to the Software is
+ * requested to send the modifications to the original developer so that
+ * they can be incorporated into the canonical version. It is also
+ * requested that these non-binding requests be included along with the
+ * license above.
+ */
+
+/** @file
+ @ingroup public_header
+ @brief Android OpenSLES-specific PortAudio API extension header file.
+*/
+
+#include <SLES/OpenSLES.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** The android stream type and recording preset as defined in
+ * OpenSLES_AndroidConfiguration.h
+ */
+typedef struct PaOpenslesStreamInfo {
+    SLint32 androidPlaybackStreamType;
+    SLint32 androidRecordingPreset;
+} PaOpenslesStreamInfo;
+
+/** Provide PA OpenSLES with native buffer information. This function must be called before Pa_Initialize.
+ * To have optimal latency, this function should be called. Otherwise PA OpenSLES will use non-optimal values
+ * as default.
+ * @param bufferSize the native buffersize as returned by AudioManager's PROPERTY_OUTPUT_FRAMES_PER_BUFFER. It is recommended you set the number of buffers to 1 if API>17 as well, and use the sample rate defined in AudioManager's android.media.property.OUTPUT_SAMPLE_RATE. All three together will enable the AUDIO_OUTPUT_FLAG_FAST flag.
+ */
+void PaOpenSLES_SetNativeBufferSize( unsigned long bufferSize );
+
+/** Provide PA OpenSLES with native buffer information. This function must be called before Pa_Initialize.
+ * To have optimal latency and enable the AUDIO_OUTPUT_FLAG_FAST flag, this function should be called. Otherwise PA OpenSLES will use non-optimal values (2) as default.
+ * @param The number of buffers can be reduced to 1 on API >17. Make sure you set the native buffer size when doing this, and use the sample rate defined in AudioManager's android.media.property.OUTPUT_SAMPLE_RATE.
+ */
+void PaOpenSLES_SetNumberOfBuffers( unsigned buffers );
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif