/*+
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    SDL - Simple DirectMedia Layer+
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    Copyright (C) 1997-2010 Sam Lantinga+
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+
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    This library is free software; you can redistribute it and/or+
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    modify it under the terms of the GNU Lesser General Public+
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    License as published by the Free Software Foundation; either+
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    version 2.1 of the License, or (at your option) any later version.+
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+
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    This library is distributed in the hope that it will be useful,+
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    but WITHOUT ANY WARRANTY; without even the implied warranty of+
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU+
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    Lesser General Public License for more details.+
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+
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    You should have received a copy of the GNU Lesser General Public+
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    License along with this library; if not, write to the Free Software+
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    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA+
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+
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    Sam Lantinga+
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    slouken@libsdl.org+
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*/+
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#include "SDL_config.h"+
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+
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/* Output audio to Android */+
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+
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#include "SDL_audio.h"+
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#include "../SDL_audio_c.h"+
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#include "SDL_androidaudio.h"+
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+
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#include "../../SDL_android.h"+
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+
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#include <android/log.h>+
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+
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static void * audioDevice;+
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+
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static int+
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AndroidAUD_OpenDevice(_THIS, const char *devname, int iscapture)+
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{+
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    SDL_AudioFormat test_format;+
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    int valid_datatype = 0;+
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    +
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    if (iscapture) {+
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    	//TODO: implement capture+
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    	SDL_SetError("Capture not supported on Android");+
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    	return 0;+
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    }+
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+
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    if (audioDevice != NULL) {+
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    	SDL_SetError("Only one audio device at a time please!");+
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    	return 0;+
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    }+
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+
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    audioDevice = this;+
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+
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    this->hidden = SDL_malloc(sizeof(*(this->hidden)));+
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    if (!this->hidden) {+
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        SDL_OutOfMemory();+
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        return 0;+
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    }+
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    SDL_memset(this->hidden, 0, (sizeof *this->hidden));+
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+
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    test_format = SDL_FirstAudioFormat(this->spec.format);+
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    while (test_format != 0) { // no "UNKNOWN" constant+
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        if ((test_format == AUDIO_U8) || (test_format == AUDIO_S16LSB)) {+
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            this->spec.format = test_format;+
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            break;+
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        }+
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        test_format = SDL_NextAudioFormat();+
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    }+
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    +
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    if (test_format == 0) {+
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    	// Didn't find a compatible format :(+
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    	SDL_SetError("No compatible audio format!");+
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    	return 0;+
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    }+
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+
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    if (this->spec.channels > 1) {+
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    	this->spec.channels = 2;+
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    } else {+
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    	this->spec.channels = 1;+
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    }+
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+
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    if (this->spec.freq < 8000) {+
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    	this->spec.freq = 8000;+
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    }+
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    if (this->spec.freq > 48000) {+
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    	this->spec.freq = 48000;+
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    }+
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+
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    // TODO: pass in/return a (Java) device ID, also whether we're opening for input or output+
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    this->spec.samples = Android_JNI_OpenAudioDevice(this->spec.freq, this->spec.format == AUDIO_U8 ? 0 : 1, this->spec.channels, this->spec.samples);+
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    SDL_CalculateAudioSpec(&this->spec);+
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+
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    if (this->spec.samples == 0) {+
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    	// Init failed?+
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    	SDL_SetError("Java-side initialization failed!");+
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    	return 0;+
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    }+
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+
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    return 1;+
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}+
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+
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static void+
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AndroidAUD_PlayDevice(_THIS)+
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{+
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    Android_JNI_WriteAudioBuffer();+
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}+
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+
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static Uint8 *+
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AndroidAUD_GetDeviceBuf(_THIS)+
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{+
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    return Android_JNI_GetAudioBuffer();+
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}+
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+
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static void+
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AndroidAUD_CloseDevice(_THIS)+
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{+
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    if (this->hidden != NULL) {+
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    	SDL_free(this->hidden);+
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    	this->hidden = NULL;+
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    }+
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	Android_JNI_CloseAudioDevice();+
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+
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    if (audioDevice == this) {+
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    	audioDevice = NULL;+
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    }+
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}+
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+
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static int+
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AndroidAUD_Init(SDL_AudioDriverImpl * impl)+
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{+
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    /* Set the function pointers */+
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    impl->OpenDevice = AndroidAUD_OpenDevice;+
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    impl->PlayDevice = AndroidAUD_PlayDevice;+
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    impl->GetDeviceBuf = AndroidAUD_GetDeviceBuf;+
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    impl->CloseDevice = AndroidAUD_CloseDevice;+
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+
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    /* and the capabilities */+
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    impl->ProvidesOwnCallbackThread = 1;+
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    impl->HasCaptureSupport = 0; //TODO+
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    impl->OnlyHasDefaultOutputDevice = 1;+
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    impl->OnlyHasDefaultInputDevice = 1;+
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+
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    return 1;   /* this audio target is available. */+
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}+
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+
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AudioBootStrap ANDROIDAUD_bootstrap = {+
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    "android", "SDL Android audio driver", AndroidAUD_Init, 0       /*1? */+
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};+
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+
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/* Called by the Java code to start the audio processing on a thread */+
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void+
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Android_RunAudioThread()+
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{+
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	SDL_RunAudio(audioDevice);+
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}+
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+
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/* vi: set ts=4 sw=4 expandtab: */+
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