1 files changed, 368 insertions, 0 deletions

diff --git a/src/output/osx_plugin.c b/src/output/osx_plugin.c
new file mode 100644
index 000000000..65060cc8c
--- /dev/null
+++ b/src/output/osx_plugin.c
@@ -0,0 +1,368 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "../output_api.h"
+
+#ifdef HAVE_OSX
+
+#include <AudioUnit/AudioUnit.h>
+
+#include "../utils.h"
+#include "../log.h"
+
+typedef struct _OsxData {
+	AudioUnit au;
+	pthread_mutex_t mutex;
+	pthread_cond_t condition;
+	char *buffer;
+	size_t bufferSize;
+	size_t pos;
+	size_t len;
+	int started;
+} OsxData;
+
+static OsxData *newOsxData()
+{
+	OsxData *ret = xmalloc(sizeof(OsxData));
+
+	pthread_mutex_init(&ret->mutex, NULL);
+	pthread_cond_init(&ret->condition, NULL);
+
+	ret->pos = 0;
+	ret->len = 0;
+	ret->started = 0;
+	ret->buffer = NULL;
+	ret->bufferSize = 0;
+
+	return ret;
+}
+
+static int osx_testDefault()
+{
+	/*AudioUnit au;
+	   ComponentDescription desc;
+	   Component comp;
+
+	   desc.componentType = kAudioUnitType_Output;
+	   desc.componentSubType = kAudioUnitSubType_Output;
+	   desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+	   desc.componentFlags = 0;
+	   desc.componentFlagsMask = 0;
+
+	   comp = FindNextComponent(NULL, &desc);
+	   if(!comp) {
+	   ERROR("Unable to open default OS X defice\n");
+	   return -1;
+	   }
+
+	   if(OpenAComponent(comp, &au) != noErr) {
+	   ERROR("Unable to open default OS X defice\n");
+	   return -1;
+	   }
+
+	   CloseComponent(au); */
+
+	return 0;
+}
+
+static int osx_initDriver(struct audio_output *audioOutput,
+			  mpd_unused const struct audio_format *audio_format,
+			  ConfigParam * param)
+{
+	OsxData *od = newOsxData();
+
+	audioOutput->data = od;
+
+	return 0;
+}
+
+static void freeOsxData(OsxData * od)
+{
+	if (od->buffer)
+		free(od->buffer);
+	pthread_mutex_destroy(&od->mutex);
+	pthread_cond_destroy(&od->condition);
+	free(od);
+}
+
+static void osx_finishDriver(struct audio_output *audioOutput)
+{
+	OsxData *od = (OsxData *) audioOutput->data;
+	freeOsxData(od);
+}
+
+static void osx_dropBufferedAudio(struct audio_output *audioOutput)
+{
+	OsxData *od = (OsxData *) audioOutput->data;
+
+	pthread_mutex_lock(&od->mutex);
+	od->len = 0;
+	pthread_mutex_unlock(&od->mutex);
+}
+
+static void osx_closeDevice(struct audio_output *audioOutput)
+{
+	OsxData *od = (OsxData *) audioOutput->data;
+
+	pthread_mutex_lock(&od->mutex);
+	while (od->len) {
+		pthread_cond_wait(&od->condition, &od->mutex);
+	}
+	pthread_mutex_unlock(&od->mutex);
+
+	if (od->started) {
+		AudioOutputUnitStop(od->au);
+		od->started = 0;
+	}
+
+	CloseComponent(od->au);
+	AudioUnitUninitialize(od->au);
+}
+
+static OSStatus osx_render(void *vdata,
+			   AudioUnitRenderActionFlags * ioActionFlags,
+			   const AudioTimeStamp * inTimeStamp,
+			   UInt32 inBusNumber, UInt32 inNumberFrames,
+			   AudioBufferList * bufferList)
+{
+	OsxData *od = (OsxData *) vdata;
+	AudioBuffer *buffer = &bufferList->mBuffers[0];
+	size_t bufferSize = buffer->mDataByteSize;
+	size_t bytesToCopy;
+	int curpos = 0;
+
+	/*DEBUG("osx_render: enter : %i\n", (int)bufferList->mNumberBuffers);
+	   DEBUG("osx_render: ioActionFlags: %p\n", ioActionFlags);
+	   if(ioActionFlags) {
+	   if(*ioActionFlags & kAudioUnitRenderAction_PreRender) {
+	   DEBUG("prerender\n");
+	   }
+	   if(*ioActionFlags & kAudioUnitRenderAction_PostRender) {
+	   DEBUG("post render\n");
+	   }
+	   if(*ioActionFlags & kAudioUnitRenderAction_OutputIsSilence) {
+	   DEBUG("post render\n");
+	   }
+	   if(*ioActionFlags & kAudioOfflineUnitRenderAction_Preflight) {
+	   DEBUG("prefilight\n");
+	   }
+	   if(*ioActionFlags & kAudioOfflineUnitRenderAction_Render) {
+	   DEBUG("render\n");
+	   }
+	   if(*ioActionFlags & kAudioOfflineUnitRenderAction_Complete) {
+	   DEBUG("complete\n");
+	   }
+	   } */
+
+	/* while(bufferSize) {
+	   DEBUG("osx_render: lock\n"); */
+	pthread_mutex_lock(&od->mutex);
+	/*
+	   DEBUG("%i:%i\n", bufferSize, od->len);
+	   while(od->go && od->len < bufferSize && 
+	   od->len < od->bufferSize)
+	   {
+	   DEBUG("osx_render: wait\n");
+	   pthread_cond_wait(&od->condition, &od->mutex);
+	   }
+	 */
+
+	bytesToCopy = od->len < bufferSize ? od->len : bufferSize;
+	bufferSize = bytesToCopy;
+	od->len -= bytesToCopy;
+
+	if (od->pos + bytesToCopy > od->bufferSize) {
+		size_t bytes = od->bufferSize - od->pos;
+		memcpy(buffer->mData + curpos, od->buffer + od->pos, bytes);
+		od->pos = 0;
+		curpos += bytes;
+		bytesToCopy -= bytes;
+	}
+
+	memcpy(buffer->mData + curpos, od->buffer + od->pos, bytesToCopy);
+	od->pos += bytesToCopy;
+	curpos += bytesToCopy;
+
+	if (od->pos >= od->bufferSize)
+		od->pos = 0;
+	/* DEBUG("osx_render: unlock\n"); */
+	pthread_mutex_unlock(&od->mutex);
+	pthread_cond_signal(&od->condition);
+	/* } */
+
+	buffer->mDataByteSize = bufferSize;
+
+	if (!bufferSize) {
+		my_usleep(1000);
+	}
+
+	/* DEBUG("osx_render: leave\n"); */
+	return 0;
+}
+
+static int osx_openDevice(struct audio_output *audioOutput,
+			  struct audio_format *audioFormat)
+{
+	OsxData *od = (OsxData *) audioOutput->data;
+	ComponentDescription desc;
+	Component comp;
+	AURenderCallbackStruct callback;
+	AudioStreamBasicDescription streamDesc;
+
+	desc.componentType = kAudioUnitType_Output;
+	desc.componentSubType = kAudioUnitSubType_DefaultOutput;
+	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+	desc.componentFlags = 0;
+	desc.componentFlagsMask = 0;
+
+	comp = FindNextComponent(NULL, &desc);
+	if (comp == 0) {
+		ERROR("Error finding OS X component\n");
+		return -1;
+	}
+
+	if (OpenAComponent(comp, &od->au) != noErr) {
+		ERROR("Unable to open OS X component\n");
+		return -1;
+	}
+
+	if (AudioUnitInitialize(od->au) != 0) {
+		CloseComponent(od->au);
+		ERROR("Unable to initialize OS X audio unit\n");
+		return -1;
+	}
+
+	callback.inputProc = osx_render;
+	callback.inputProcRefCon = od;
+
+	if (AudioUnitSetProperty(od->au, kAudioUnitProperty_SetRenderCallback,
+				 kAudioUnitScope_Input, 0,
+				 &callback, sizeof(callback)) != 0) {
+		AudioUnitUninitialize(od->au);
+		CloseComponent(od->au);
+		ERROR("unable to set callback for OS X audio unit\n");
+		return -1;
+	}
+
+	streamDesc.mSampleRate = audioFormat->sample_rate;
+	streamDesc.mFormatID = kAudioFormatLinearPCM;
+	streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger;
+#ifdef WORDS_BIGENDIAN
+	streamDesc.mFormatFlags |= kLinearPCMFormatFlagIsBigEndian;
+#endif
+
+	streamDesc.mBytesPerPacket = audio_format_frame_size(audioFormat);
+	streamDesc.mFramesPerPacket = 1;
+	streamDesc.mBytesPerFrame = streamDesc.mBytesPerPacket;
+	streamDesc.mChannelsPerFrame = audioFormat->channels;
+	streamDesc.mBitsPerChannel = audioFormat->bits;
+
+	if (AudioUnitSetProperty(od->au, kAudioUnitProperty_StreamFormat,
+				 kAudioUnitScope_Input, 0,
+				 &streamDesc, sizeof(streamDesc)) != 0) {
+		AudioUnitUninitialize(od->au);
+		CloseComponent(od->au);
+		ERROR("Unable to set format on OS X device\n");
+		return -1;
+	}
+
+	/* create a buffer of 1s */
+	od->bufferSize = (audioFormat->sample_rate) *
+		audio_format_frame_size(audioFormat);
+	od->buffer = xrealloc(od->buffer, od->bufferSize);
+
+	od->pos = 0;
+	od->len = 0;
+
+	return 0;
+}
+
+static int osx_play(struct audio_output *audioOutput,
+		    const char *playChunk, size_t size)
+{
+	OsxData *od = (OsxData *) audioOutput->data;
+	size_t bytesToCopy;
+	size_t curpos;
+
+	/* DEBUG("osx_play: enter\n"); */
+
+	if (!od->started) {
+		int err;
+		od->started = 1;
+		err = AudioOutputUnitStart(od->au);
+		if (err) {
+			ERROR("unable to start audio output: %i\n", err);
+			return -1;
+		}
+	}
+
+	pthread_mutex_lock(&od->mutex);
+
+	while (size) {
+		/* DEBUG("osx_play: lock\n"); */
+		curpos = od->pos + od->len;
+		if (curpos >= od->bufferSize)
+			curpos -= od->bufferSize;
+
+		bytesToCopy = od->bufferSize < size ? od->bufferSize : size;
+
+		while (od->len > od->bufferSize - bytesToCopy) {
+			/* DEBUG("osx_play: wait\n"); */
+			pthread_cond_wait(&od->condition, &od->mutex);
+		}
+
+		bytesToCopy = od->bufferSize - od->len;
+		bytesToCopy = bytesToCopy < size ? bytesToCopy : size;
+		size -= bytesToCopy;
+		od->len += bytesToCopy;
+
+		if (curpos + bytesToCopy > od->bufferSize) {
+			size_t bytes = od->bufferSize - curpos;
+			memcpy(od->buffer + curpos, playChunk, bytes);
+			curpos = 0;
+			playChunk += bytes;
+			bytesToCopy -= bytes;
+		}
+
+		memcpy(od->buffer + curpos, playChunk, bytesToCopy);
+		curpos += bytesToCopy;
+		playChunk += bytesToCopy;
+
+	}
+	/* DEBUG("osx_play: unlock\n"); */
+	pthread_mutex_unlock(&od->mutex);
+
+	/* DEBUG("osx_play: leave\n"); */
+	return 0;
+}
+
+const struct audio_output_plugin osxPlugin = {
+	.name = "osx",
+	.test_default_device = osx_testDefault,
+	.init = osx_initDriver,
+	.finish = osx_finishDriver,
+	.open = osx_openDevice,
+	.play = osx_play,
+	.cancel = osx_dropBufferedAudio,
+	.close = osx_closeDevice,
+};
+
+#else
+
+DISABLED_AUDIO_OUTPUT_PLUGIN(osxPlugin)
+#endif