playing audio in OS X now works, but far from finished

still need to implement closing the audio device

git-svn-id: https://svn.musicpd.org/mpd/trunk@3086 09075e82-0dd4-0310-85a5-a0d7c8717e4f

1 files changed, 143 insertions, 186 deletions

diff --git a/src/audioOutputs/audioOutput_osx.c b/src/audioOutputs/audioOutput_osx.c
index ab31cc6f6..c14bdc17d 100644
--- a/src/audioOutputs/audioOutput_osx.c
+++ b/src/audioOutputs/audioOutput_osx.c
@@ -20,73 +20,28 @@
 
 #ifdef HAVE_OSX
 
-#include "../conf.h"
-#include "../log.h"
-
-#include <CoreAudio/AudioHardware.h>
+#include <AudioUnit/AudioUnit.h>
 #include <stdlib.h>
 #include <pthread.h>
 
-#define BUFFER_SIZE 1024
+#include "../log.h"
+
+#define BUFFER_SIZE 8192
 
 typedef struct _OsxData {
-	AudioDeviceID deviceID;
-	AudioStreamBasicDescription streamDesc;
+	AudioUnit au;
 	pthread_mutex_t	mutex;
 	pthread_cond_t condition;
-	Float32 buffer[BUFFER_SIZE];
+	char buffer[BUFFER_SIZE];
 	int pos;
 	int len;
 	int go;
 	int started;
 } OsxData;
 
-static void printError(OSStatus val) {
-	switch(val) {
-	case kAudioHardwareNoError:
-		ERROR("kAudioHardwareNoErr");
-		break;
-	case kAudioHardwareNotRunningError:
-		ERROR("kAudioHardwareNotRunningError");
-		break;
-	case kAudioHardwareUnspecifiedError:
-		ERROR("kAudioHardwareUnspecifiedError");
-		break;
-	case kAudioHardwareUnknownPropertyError:
-		ERROR("kAudioHardwareUnknownPropertyError");
-		break;
-	case kAudioHardwareBadPropertySizeError:
-		ERROR("kAudioHardwareBadPropertySizeError");
-		break;
-	case kAudioHardwareIllegalOperationError:
-		ERROR("kAudioHardwareIllegalOperationError");
-		break;
-	case kAudioHardwareBadDeviceError:
-		ERROR("kAudioHardwareBadDeviceError");
-		break;
-	case kAudioHardwareBadStreamError:
-		ERROR("kAudioHardwareBadStreamError");
-		break;
-	case kAudioHardwareUnsupportedOperationError:
-		ERROR("kAudioHardwareUnsupportedOperationError");
-		break;
-	case kAudioDeviceUnsupportedFormatError:
-		ERROR("kAudioDeviceUnsupportedFormatError");
-		break;
-	case kAudioDevicePermissionsError:
-		ERROR("kAudioDevicePermissionsError");
-		break;
-	default:
-		ERROR("unknown");
-		break;
-	}
-}
-
 static OsxData * newOsxData() {
 	OsxData * ret = malloc(sizeof(OsxData));
 
-	ret->deviceID = kAudioDeviceUnknown;
-
 	pthread_mutex_init(&ret->mutex, NULL);
 	pthread_cond_init(&ret->condition, NULL);
 
@@ -99,17 +54,28 @@ static OsxData * newOsxData() {
 }
 
 static int osx_testDefault() {
-	int err;
-	AudioDeviceID deviceID;
-	UInt32 propertySize = sizeof(deviceID);
-
-	err = AudioHardwareGetProperty(
-			kAudioHardwarePropertyDefaultOutputDevice,
-			&propertySize, &deviceID);
-	if(err || deviceID == kAudioDeviceUnknown) {
-		WARNING("Not able to get the default OS X device\n");
+	/*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;
 }
@@ -141,109 +107,132 @@ static void osx_closeDevice(AudioOutput * audioOutput) {
 	audioOutput->open = 0;
 }
 
-static OSStatus osx_IOProc(AudioDeviceID deviceID, 
-	const AudioTimeStamp * inNow, const AudioBufferList *inData,
-	const AudioTimeStamp * inInputTime, AudioBufferList *outData,
-	const AudioTimeStamp * inOutputTime, void * vdata)
+static OSStatus osx_render(void * vdata, 
+		AudioUnitRenderActionFlags *ioActionFlags, 
+		const AudioTimeStamp * inTimeStamp,
+		UInt32 inBusNumber, UInt32 inNumberFrames,
+		AudioBufferList *bufferList)
 {
 	OsxData * od = (OsxData *)vdata;
-	AudioBuffer * buffer = &outData->mBuffers[0];
-	int bufferSize = buffer->mDataByteSize/sizeof(Float32);
-	int floatsToCopy;
+	AudioBuffer * buffer = &bufferList->mBuffers[0];
+	int bufferSize = buffer->mDataByteSize;
+	int bytesToCopy;
 	int curpos = 0;
 
-	DEBUG("entering IOProc\n");
-
 	pthread_mutex_lock(&od->mutex);
 
 	while((od->go || od->len) && bufferSize) {
 		while(od->go && od->len < bufferSize && 
 				od->len < BUFFER_SIZE)
 		{
+			pthread_cond_signal(&od->condition);
 			pthread_cond_wait(&od->condition, &od->mutex);
 		}
 
-		floatsToCopy = od->len < bufferSize ? od->len : bufferSize;
-		bufferSize -= floatsToCopy;
+		bytesToCopy = od->len < bufferSize ? od->len : bufferSize;
+		bufferSize -= bytesToCopy;
+		od->len -= bytesToCopy;
 
-		if(od->pos+floatsToCopy > BUFFER_SIZE) {
-			int floats = BUFFER_SIZE-od->pos;
-			memcpy(buffer->mData+curpos, od->buffer+od->pos, 
-					floats*sizeof(Float32));
-			od->len -= floats;
+		if(od->pos+bytesToCopy > BUFFER_SIZE) {
+			int bytes = BUFFER_SIZE-od->pos;
+			memcpy(buffer->mData+curpos, od->buffer+od->pos, bytes);
 			od->pos = 0;
-			curpos += floats;
-			floatsToCopy -= floats;
+			curpos += bytes;
+			bytesToCopy -= bytes;
 		}
 
-		memcpy(buffer->mData+curpos, od->buffer+od->pos, 
-				floatsToCopy*sizeof(Float32));
-		od->len -= floatsToCopy;
-		od->pos += floatsToCopy;
-		curpos += floatsToCopy;
+		assert(bytesToCopy);
+		memcpy(buffer->mData+curpos, od->buffer+od->pos, bytesToCopy);
+		od->pos += bytesToCopy;
+		curpos += bytesToCopy;
+
+		if(od->pos >= BUFFER_SIZE) od->pos = 0;
 	}
 
 	if(bufferSize) {
-		memset(buffer->mData+curpos, 0, bufferSize*sizeof(Float32));
+		memset(buffer->mData+curpos, 0, bufferSize);
 	}
 
-	pthread_mutex_unlock(&od->mutex);
 	pthread_cond_signal(&od->condition);
-
-	DEBUG("exiting IOProc\n");
+	pthread_mutex_unlock(&od->mutex);
 
 	return 0;
 }
 
 static int osx_openDevice(AudioOutput * audioOutput) {
-	int err;
 	OsxData * od = (OsxData *)audioOutput->data;
-	UInt32 propertySize;
+	ComponentDescription desc;
+	Component comp;
+	AURenderCallbackStruct callback;
 	AudioFormat * audioFormat = &audioOutput->outAudioFormat;
-	UInt32 bufferByteCount = 8192;
-
-	propertySize = sizeof(od->deviceID);
-	err = AudioHardwareGetProperty(
-			kAudioHardwarePropertyDefaultOutputDevice,
-			&propertySize, &od->deviceID);
-	if(err || od->deviceID == kAudioDeviceUnknown) {
-		ERROR("Not able to get the default OS X device\n");
+	AudioStreamBasicDescription streamDesc;
+
+	desc.componentType = kAudioUnitType_Output;
+	desc.componentSubType = kAudioUnitSubType_DefaultOutput;
+	desc.componentManufacturer = kAudioUnitManufacturer_Apple;
+	desc.componentFlags = 0;
+	desc.componentFlagsMask = 0;
+
+	DEBUG("finding component\n");
+
+	comp = FindNextComponent(NULL, &desc);
+	if(comp == 0) {
+		ERROR("Error finding OS X component\n");
 		return -1;
 	}
 
-	od->streamDesc.mFormatID = kAudioFormatLinearPCM;
-	od->streamDesc.mSampleRate = audioFormat->sampleRate;
-	od->streamDesc.mFormatFlags = kLinearPCMFormatFlagIsFloat |
-				      kLinearPCMFormatFlagIsBigEndian |
-				      kLinearPCMFormatFlagIsPacked;
-	od->streamDesc.mBytesPerPacket = audioFormat->channels*sizeof(Float32);
-	od->streamDesc.mFramesPerPacket = 1;
-	od->streamDesc.mBytesPerFrame = audioFormat->channels*sizeof(Float32);
-	od->streamDesc.mChannelsPerFrame = audioFormat->channels;
-	od->streamDesc.mBitsPerChannel = 8 * sizeof(Float32);
-
-	audioFormat->bits = 16;
-
-	propertySize = sizeof(od->streamDesc);
-	err = AudioDeviceSetProperty(od->deviceID, 0, 0, false, 
-			kAudioDevicePropertyStreamFormat,
-			propertySize, &od->streamDesc);
-	if(err) {
-		ERROR("unable to set format %i:%i:% on osx device\n",
-				(int)audioFormat->sampleRate,
-				(int)audioFormat->bits,
-				(int)audioFormat->channels);
+	DEBUG("opening component\n");
+	if(OpenAComponent(comp, &od->au) != noErr) {
+		ERROR("Unable to open OS X component\n");
 		return -1;
 	}
 
-	propertySize = sizeof(UInt32);
-	err = AudioDeviceSetProperty(od->deviceID, 0, 0, false, 
-			kAudioDevicePropertyBufferSize,
-        		propertySize, &bufferByteCount);
+	DEBUG("initializing au\n");
+	if(AudioUnitInitialize(od->au) != 0) {
+		CloseComponent(od->au);
+		ERROR("Unable to initialuze OS X audio unit\n");
+		return -1;
+	}
+
+	callback.inputProc = osx_render;
+	callback.inputProcRefCon = od;
+
+	DEBUG("set callback\n");
+	if(AudioUnitSetProperty(od->au, kAudioUnitProperty_SetRenderCallback,
+				kAudioUnitScope_Input, 0,
+				&callback, sizeof(callback)) != 0)
+	{
+		AudioUnitUninitialize(od->au);
+		CloseComponent(od->au);
+		ERROR("unable to set callbak for OS X audio unit\n");
+		return -1;
+	}
 
-	err = AudioDeviceAddIOProc(od->deviceID, osx_IOProc, od);
+	streamDesc.mSampleRate = audioFormat->sampleRate;
+	streamDesc.mFormatID = kAudioFormatLinearPCM;
+	streamDesc.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger |
+			    kLinearPCMFormatFlagIsBigEndian;
+	streamDesc.mBytesPerPacket = audioFormat->channels*audioFormat->bits/8;
+	streamDesc.mFramesPerPacket = 1;
+	streamDesc.mBytesPerFrame = streamDesc.mBytesPerPacket;
+	streamDesc.mChannelsPerFrame = audioFormat->channels;
+	streamDesc.mBitsPerChannel = audioFormat->bits;
+
+	DEBUG("set format\n");
+	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;
+	}
+
+	DEBUG("start\n");
+	int err = AudioOutputUnitStart(od->au);
 	if(err) {
-		ERROR("error adding IOProc\n");
+		ERROR("unable to start audio output: %i\n", err);
 		return -1;
 	}
 
@@ -253,86 +242,54 @@ static int osx_openDevice(AudioOutput * audioOutput) {
 
 	audioOutput->open = 1;
 
+	DEBUG("opened OS X device\n");
 	return 0;
 }
 
-static void copyIntBufferToFloat(char * playChunk, int size, float * buffer,
-		int floats) 
-{
-	/* this is for 16-bit audio only */
-	SInt16 * sample;
-
-	while(floats) {
-		sample = (SInt16 *)playChunk;
-		*buffer = *sample/32767.0;
-		playChunk += 2;
-		buffer++;
-		floats--;
-	}
-}
-
 static int osx_play(AudioOutput * audioOutput, char * playChunk, int size) {
 	OsxData * od = (OsxData *)audioOutput->data;
-	int floatsToCopy;
-
-	size /= 2;
-
-	DEBUG("entering osx_play\n");
+	int bytesToCopy;
+	int curpos;
 
 	pthread_mutex_lock(&od->mutex);
 
-	DEBUG("entering while loop\n");
+	curpos = od->pos+od->len;
+	if(curpos >= BUFFER_SIZE) curpos -= BUFFER_SIZE;
+
 	while(size) {
-		DEBUG("iterating loop with size = %i\n", size);
-		while(od->len == BUFFER_SIZE) {
-			if(!od->started) {
-				OSStatus err = AudioDeviceStart(od->deviceID,
-							osx_IOProc);
-				DEBUG("start audio device\n");
-				if(err) {
-					printError(err);
-					ERROR(" error doing AudioDeviceStart "
-							"for osx device: %i\n",
-							(int)err);
-					pthread_mutex_unlock(&od->mutex);
-					return -1;
-				}
-				od->started = 1;
-				DEBUG("audio device started\n");
+		while(od->len >= BUFFER_SIZE) {
+			if(curpos!=od->pos) {
+				DEBUG("%i != %i\n", curpos, od->pos);
+				abort();
 			}
-
-			DEBUG("cond_wait\n");
+			pthread_cond_signal(&od->condition);
 			pthread_cond_wait(&od->condition, &od->mutex);
 		}
 
-		floatsToCopy = BUFFER_SIZE - od->len;
-		floatsToCopy = floatsToCopy < size ? floatsToCopy : size;
-		size -= floatsToCopy;
-
-		if(od->pos+floatsToCopy > BUFFER_SIZE) {
-			int floats = BUFFER_SIZE-od->pos;
-			copyIntBufferToFloat(playChunk, 
-					audioOutput->outAudioFormat.bits/8, 
-					od->buffer,
-					floats);
-			od->pos = 0;
-			od->len += floats;
-			playChunk += floats*sizeof(Float32);
+		bytesToCopy = BUFFER_SIZE - od->len;
+		bytesToCopy = bytesToCopy < size ? bytesToCopy : size;
+		size -= bytesToCopy;
+		od->len += bytesToCopy;
+
+		if(curpos+bytesToCopy > BUFFER_SIZE) {
+			int bytes = BUFFER_SIZE-curpos;
+			memcpy(od->buffer+curpos, playChunk, bytes);
+			curpos = 0;
+			playChunk += bytes;
+			bytesToCopy -= bytes;
 		}
 
-		copyIntBufferToFloat(playChunk, 
-				audioOutput->outAudioFormat.bits/8, 
-				od->buffer,
-				floatsToCopy);
-		od->pos += floatsToCopy;
-		od->len += floatsToCopy;
-		playChunk += floatsToCopy*sizeof(Float32);
+		assert(bytesToCopy);
+		memcpy(od->buffer+curpos, playChunk, bytesToCopy);
+		curpos += bytesToCopy;
+		playChunk += bytesToCopy;
+
+		if(curpos >= BUFFER_SIZE) curpos = 0;
 	}
 
-	pthread_mutex_unlock(&od->mutex);
 	pthread_cond_signal(&od->condition);
+	pthread_mutex_unlock(&od->mutex);
 
-	DEBUG("exiting osx_play\n");
 	return 0;
 }