GODOT IS OPEN SOURCE

1 files changed, 157 insertions, 0 deletions

diff --git a/platform/iphone/audio_driver_iphone.cpp b/platform/iphone/audio_driver_iphone.cpp
new file mode 100644
index 0000000000..d39b8f3c4d
--- /dev/null
+++ b/platform/iphone/audio_driver_iphone.cpp
@@ -0,0 +1,157 @@
+/*************************************************************************/
+/*  audio_driver_iphone.cpp                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* 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.                */
+/*************************************************************************/
+#include "audio_driver_iphone.h"
+
+Error AudioDriverIphone::init() {
+
+	active = false;
+	channels = 2;
+
+	AudioStreamBasicDescription strdesc;
+	strdesc.mFormatID = kAudioFormatLinearPCM;
+	strdesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kLinearPCMFormatFlagIsPacked;
+	strdesc.mChannelsPerFrame = channels;
+	strdesc.mSampleRate = 44100;
+	strdesc.mFramesPerPacket = 1;
+	strdesc.mBitsPerChannel = 16;
+	strdesc.mBytesPerFrame =
+		strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
+	strdesc.mBytesPerPacket =
+		strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
+
+	OSStatus result = noErr;
+	AURenderCallbackStruct callback;
+	AudioComponentDescription desc;
+	AudioComponent comp = NULL;
+	const AudioUnitElement output_bus = 0;
+	const AudioUnitElement bus = output_bus;
+	const AudioUnitScope scope = kAudioUnitScope_Input;
+
+	zeromem(&desc, sizeof(desc));
+	desc.componentType = kAudioUnitType_Output;
+	desc.componentSubType = kAudioUnitSubType_RemoteIO;  /* !!! FIXME: ? */
+	comp = AudioComponentFindNext(NULL, &desc);
+	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+
+	result = AudioComponentInstanceNew(comp, &audio_unit);
+	ERR_FAIL_COND_V(result != noErr, FAILED);
+	ERR_FAIL_COND_V(comp == NULL, FAILED);
+
+	result = AudioUnitSetProperty(audio_unit,
+								  kAudioUnitProperty_StreamFormat,
+								  scope, bus, &strdesc, sizeof(strdesc));
+	ERR_FAIL_COND_V(result != noErr, FAILED);
+
+	zeromem(&callback, sizeof(AURenderCallbackStruct));
+	callback.inputProc = &AudioDriverIphone::output_callback;
+	callback.inputProcRefCon = this;
+	result = AudioUnitSetProperty(audio_unit,
+								  kAudioUnitProperty_SetRenderCallback,
+								  scope, bus, &callback, sizeof(callback));
+	ERR_FAIL_COND_V(result != noErr, FAILED);
+
+	result = AudioUnitInitialize(audio_unit);
+	ERR_FAIL_COND_V(result != noErr, FAILED);
+
+	result = AudioOutputUnitStart(audio_unit);
+	ERR_FAIL_COND_V(result != noErr, FAILED);
+
+	const int samples = 1024;
+	samples_in = memnew_arr(int32_t, samples); // whatever
+	buffer_frames = samples / channels;
+
+	return FAILED;
+};
+
+OSStatus AudioDriverIphone::output_callback(void *inRefCon,
+			   AudioUnitRenderActionFlags * ioActionFlags,
+			   const AudioTimeStamp * inTimeStamp,
+			   UInt32 inBusNumber, UInt32 inNumberFrames,
+			   AudioBufferList * ioData) {
+
+
+	AudioBuffer *abuf;
+	AudioDriverIphone* ad = (AudioDriverIphone*)inRefCon;
+
+	if (!ad->active) {
+		for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
+			abuf = &ioData->mBuffers[i];
+			zeromem(abuf->mData, abuf->mDataByteSize);
+		};
+		return 0;
+	};
+
+	int frames_left;
+
+	for (unsigned int i = 0; i < ioData->mNumberBuffers; i++) {
+
+		abuf = &ioData->mBuffers[i];
+		frames_left = inNumberFrames;
+		int16_t* out = (int16_t*)abuf->mData;
+
+		while (frames_left) {
+
+			int frames = MIN(frames_left, ad->buffer_frames);
+			ad->lock();
+			ad->audio_server_process(frames, ad->samples_in);
+			ad->unlock();
+
+			for(int i = 0; i < frames * ad->channels; i++) {
+
+				out[i] = ad->samples_in[i]>>16;
+			}
+
+			frames_left -= frames;
+			out += frames * ad->channels;
+		};
+	};
+
+	return 0;
+};
+
+void AudioDriverIphone::start() {
+	active = true;
+};
+
+int AudioDriverIphone::get_mix_rate() const {
+	return 44100;
+};
+
+AudioDriverSW::OutputFormat AudioDriverIphone::get_output_format() const {
+	return OUTPUT_STEREO;
+};
+
+void AudioDriverIphone::lock() {};
+void AudioDriverIphone::unlock() {};
+
+void AudioDriverIphone::finish() {
+
+	memdelete_arr(samples_in);
+};
+