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-rw-r--r--drumgizmo/output/coreaudio.cc246
-rw-r--r--drumgizmo/output/coreaudio.h56
2 files changed, 208 insertions, 94 deletions
diff --git a/drumgizmo/output/coreaudio.cc b/drumgizmo/output/coreaudio.cc
index 1da2cab..d818116 100644
--- a/drumgizmo/output/coreaudio.cc
+++ b/drumgizmo/output/coreaudio.cc
@@ -33,7 +33,21 @@
#include <hugin.hpp>
#include <assert.h>
-#if 0
+#include <CoreAudio/CoreAudio.h>
+#include <CoreServices/CoreServices.h>
+#include <AudioUnit/AudioUnit.h>
+#include <AudioUnit/AUComponent.h>
+
+struct RAII
+{
+ std::string id; // value from user arguments
+ AudioDeviceID device_id{kAudioDeviceUnknown};
+ std::uint32_t frames;
+ std::uint32_t samplerate;
+ AudioBufferList* input_list;
+ ComponentInstance audio_unit;
+};
+
static const char* errorString(OSStatus err)
{
const char* err_string = "unknown";
@@ -75,54 +89,114 @@ static const char* errorString(OSStatus err)
return err_string;
}
-#endif
-
-OSStatus CoreAudioOutputEngine::audioCallback(void *user_data,
- AudioUnitRenderActionFlags *action_flags,
- const AudioTimeStamp *timestamp,
- UInt32 bus_number,
- UInt32 number_frames,
- AudioBufferList *io_data)
+
+static std::vector<AudioDeviceID> getDeviceList()
{
- OSStatus err = noErr;
- CoreAudioOutputEngine *engine =
- static_cast<CoreAudioOutputEngine*>(user_data);
- (void)engine;
+ OSStatus err;
+ Boolean is_writable;
+
+ // Get number of devices in device list
+ UInt32 size;
+ err = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
+ &size, &is_writable);
+ if(err != noErr)
+ {
+ ERR(coreaudio, "Error kAudioHardwarePropertyDevices: %s",
+ errorString(err));
+ return {};
+ }
- // Despite the audio buffer list, playback render can only submit a
- // single buffer.
+ if(size == 0)
+ {
+ return {};
+ }
- if(!io_data)
+ std::size_t number_of_devices = size / sizeof(AudioDeviceID);
+
+ // Allocate vector for devices.
+ std::vector<AudioDeviceID> devices;
+ devices.resize(number_of_devices);
+
+ err = AudioHardwareGetProperty(kAudioHardwarePropertyDevices, &size,
+ devices.data());
+ if(err != noErr)
{
- ERR(coreaudio, "Unexpected number of buffers (io_data == nullptr)\n");
- return 0;
+ ERR(coreaudio, "Error kAudioHardwarePropertyDevices: %s",
+ errorString(err));
+ return {};
}
- if(io_data->mNumberBuffers != 1)
+ return devices;
+}
+
+static std::string getDeviceName(AudioDeviceID device_id)
+{
+ OSStatus err;
+
+ char device_name[256];
+ memset(device_name, 0, sizeof(device_name));
+ UInt32 size = sizeof(device_name) - 1; // leave space for terminating zero
+ err = AudioDeviceGetProperty(device_id, 0, false,
+ kAudioDevicePropertyDeviceName,
+ &size, device_name);
+ if(err != noErr)
{
- ERR(coreaudio, "Unexpected number of buffers (%d)\n",
- (int)io_data->mNumberBuffers);
- return 0;
+ ERR(coreaudio, "Error kAudioDevicePropertyDeviceName: %s",
+ errorString(err));
+ return "";
}
- float *samples = (float*)io_data->mBuffers[0].mData;
- auto size = io_data->mBuffers[0].mDataByteSize / sizeof(float);
+ return std::string(device_name);
+}
- static double p = 0.0;
- for(auto i = 0u; i < size; ++i)
+static std::string getDeviceUID(AudioDeviceID device_id)
+{
+ OSStatus err;
+ CFStringRef ui_name = nullptr;
+ UInt32 size = sizeof(CFStringRef);
+ err = AudioDeviceGetProperty(device_id, 0, false,
+ kAudioDevicePropertyDeviceUID,
+ &size, &ui_name);
+ if(err != noErr)
{
- samples[i] = 0.4 * sin(p += 0.02);
+ ERR(coreaudio, "Error kAudioDevicePropertyDeviceUID: %s",
+ errorString(err));
+
+ if(ui_name != nullptr)
+ {
+ CFRelease(ui_name);
+ }
+
+ return "";
}
- return err;
+ assert(ui_name != nullptr);
+
+ char internal_name[256];
+ memset(internal_name, 0, sizeof(internal_name));
+ size = sizeof(internal_name) - 1; // leave space for terminating zero
+ CFStringGetCString(ui_name, internal_name, size,
+ CFStringGetSystemEncoding());
+
+ if(ui_name != nullptr)
+ {
+ CFRelease(ui_name);
+ }
+
+ return std::string(internal_name);
}
CoreAudioOutputEngine::CoreAudioOutputEngine()
+ : raii(new struct RAII)
{
+ raii->samplerate = 44100;
+ raii->frames = 1024;
+ DEBUG(coreaudio, "!");
}
CoreAudioOutputEngine::~CoreAudioOutputEngine()
{
+ DEBUG(coreaudio, "!");
}
bool CoreAudioOutputEngine::init(const Channels& channels)
@@ -131,7 +205,6 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
AudioComponent comp;
AudioComponentDescription desc;
AudioStreamBasicDescription requestedDesc;
- AURenderCallbackStruct input;
UInt32 i_param_size, requestedEndian;
// Locate the default output audio unit
@@ -150,7 +223,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
}
// Open & initialize the default output audio unit
- result = AudioComponentInstanceNew(comp, &outputAudioUnit);
+ result = AudioComponentInstanceNew(comp, &raii->audio_unit);
if(result)
{
ERR(coreaudio,"AudioComponentInstanceNew() error => %d\n", (int)result);
@@ -158,22 +231,21 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
}
// Set the desired output device if not default
- if(outputDevice != kAudioObjectUnknown)
+ if(raii->device_id != kAudioObjectUnknown)
{
- result = AudioUnitSetProperty(outputAudioUnit,
+ result = AudioUnitSetProperty(raii->audio_unit,
kAudioOutputUnitProperty_CurrentDevice,
kAudioUnitScope_Global,
0,
- &outputDevice,
- sizeof(outputDevice));
+ &raii->device_id,
+ sizeof(raii->device_id));
if(result)
{
ERR(coreaudio, "AudioComponentSetDevice() error => %d\n", (int)result);
- AudioComponentInstanceDispose(outputAudioUnit);
+ AudioComponentInstanceDispose(raii->audio_unit);
return false;
}
}
- output_p=1;
// Request desired format of the audio unit. Let HAL do all
// conversion since it will probably be doing some internal
@@ -196,7 +268,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
//requestedDesc.mFormatFlags |= kAudioFormatFlagIsSignedInteger;
requestedDesc.mFormatFlags |=kAudioFormatFlagIsFloat;
requestedDesc.mChannelsPerFrame = channels.size();//device->output_channels;
- requestedDesc.mSampleRate = samplerate;//format->rate;
+ requestedDesc.mSampleRate = raii->samplerate;//format->rate;
requestedDesc.mBitsPerChannel = 32;//format->bits;
requestedDesc.mFramesPerPacket = 1;
requestedDesc.mBytesPerFrame =
@@ -204,7 +276,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
requestedDesc.mBytesPerPacket =
requestedDesc.mBytesPerFrame * requestedDesc.mFramesPerPacket;
- result = AudioUnitSetProperty(outputAudioUnit,
+ result = AudioUnitSetProperty(raii->audio_unit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
@@ -219,7 +291,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
// What format did we actually get?
i_param_size = sizeof(requestedDesc);
- result = AudioUnitGetProperty(outputAudioUnit,
+ result = AudioUnitGetProperty(raii->audio_unit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input,
0,
@@ -286,11 +358,11 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
// return false;
// }
//}
- if(requestedDesc.mSampleRate != samplerate)
+ if(requestedDesc.mSampleRate != raii->samplerate)
{
WARN(coreaudio,
"Could not set sample rate to exactly %d; using %g instead.\n",
- samplerate,(double)requestedDesc.mSampleRate);
+ raii->samplerate,(double)requestedDesc.mSampleRate);
}
// Set the channel mapping.
@@ -304,7 +376,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
// layout.mChannelLayoutTag = kAudioChannelLayoutTag_UseChannelBitmap;
// layout.mChannelBitmap = device->output_mask;
//
- // result = AudioUnitSetProperty(outputAudioUnit,
+ // result = AudioUnitSetProperty(raii->audio_unit,
// kAudioUnitProperty_AudioChannelLayout,
// kAudioUnitScope_Input, 0, &layout,
// sizeof(layout));
@@ -315,10 +387,11 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
//}
// Set the audio callback
- input.inputProc = (AURenderCallback)audioCallback;
+ AURenderCallbackStruct input;
+ input.inputProc = (AURenderCallback)render;
input.inputProcRefCon = this;
- result = AudioUnitSetProperty(outputAudioUnit,
+ result = AudioUnitSetProperty(raii->audio_unit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Input,
0, &input, sizeof(input));
@@ -328,7 +401,7 @@ bool CoreAudioOutputEngine::init(const Channels& channels)
return false;
}
- result = AudioUnitInitialize(outputAudioUnit);
+ result = AudioUnitInitialize(raii->audio_unit);
if(result)
{
ERR(coreaudio, "AudioUnitInitialize() error => %d\n",(int)result);
@@ -343,15 +416,34 @@ void CoreAudioOutputEngine::setParm(const std::string& parm,
{
if(parm == "id")
{
+ if(value == "list")
+ {
+ // Dump device list
+ auto device_list = getDeviceList();
+ std::cout << "[CoreAudioOutputEngine] Device list (" <<
+ device_list.size() << " devices):\n";
+ for(auto device_id : device_list)
+ {
+ auto device_name = getDeviceName(device_id);
+ auto device_uid = getDeviceUID(device_id);
+ std::cout << "[CoreAudioOutputEngine] - id: " << device_id <<
+ " device: '" << device_name <<
+ "' (uid: '" << device_uid << "')\n";
+ }
+
+ // Do not proceed
+ exit(0);
+ }
+
// Use the device pointed to by this ID.
- id = value;
+ raii->id = value;
}
else if(parm == "frames")
{
// try to apply hardware buffer size
try
{
- frames = std::stoi(value);
+ raii->frames = std::stoi(value);
}
catch(...)
{
@@ -363,7 +455,7 @@ void CoreAudioOutputEngine::setParm(const std::string& parm,
{
try
{
- samplerate = std::stoi(value);
+ raii->samplerate = std::stoi(value);
}
catch(...)
{
@@ -381,22 +473,22 @@ void CoreAudioOutputEngine::setParm(const std::string& parm,
bool CoreAudioOutputEngine::start()
{
- std::cout << __PRETTY_FUNCTION__ << std::endl;
- int err = AudioOutputUnitStart(au_hal);
- err = AudioOutputUnitStart(outputAudioUnit);
DEBUG(coreaudio, "Starting audio output unit\n");
- if(err){
-// pthread_mutex_unlock(&mutex);
+
+ int err = AudioOutputUnitStart(raii->audio_unit);
+ if(err)
+ {
ERR(coreaudio, "Failed to start audio output => %d\n",(int)err);
return false;
}
+
return true;
}
void CoreAudioOutputEngine::stop()
{
std::cout << __PRETTY_FUNCTION__ << std::endl;
- AudioOutputUnitStop(au_hal);
+ AudioOutputUnitStop(raii->audio_unit);
}
void CoreAudioOutputEngine::pre(size_t nsamples)
@@ -416,7 +508,12 @@ void CoreAudioOutputEngine::post(size_t nsamples)
size_t CoreAudioOutputEngine::getSamplerate() const
{
- return samplerate;
+ return raii->samplerate;
+}
+
+std::size_t CoreAudioOutputEngine::getBufferSize() const
+{
+ return raii->frames;
}
bool CoreAudioOutputEngine::isFreewheeling() const
@@ -424,3 +521,42 @@ bool CoreAudioOutputEngine::isFreewheeling() const
return false;
}
+OSStatus CoreAudioOutputEngine::render(void *user_data,
+ AudioUnitRenderActionFlags *action_flags,
+ const AudioTimeStamp *timestamp,
+ UInt32 bus_number,
+ UInt32 number_frames,
+ AudioBufferList *io_data)
+{
+ OSStatus err = noErr;
+ CoreAudioOutputEngine *engine =
+ static_cast<CoreAudioOutputEngine*>(user_data);
+ (void)engine;
+
+ // Despite the audio buffer list, playback render can only submit a
+ // single buffer.
+
+ if(!io_data)
+ {
+ ERR(coreaudio, "Unexpected number of buffers (io_data == nullptr)\n");
+ return 0;
+ }
+
+ if(io_data->mNumberBuffers != 1)
+ {
+ ERR(coreaudio, "Unexpected number of buffers (%d)\n",
+ (int)io_data->mNumberBuffers);
+ return 0;
+ }
+
+ float *samples = (float*)io_data->mBuffers[0].mData;
+ auto size = io_data->mBuffers[0].mDataByteSize / sizeof(float);
+
+ static double p = 0.0;
+ for(auto i = 0u; i < size; ++i)
+ {
+ samples[i] = 0.4 * sin(p += 0.02);
+ }
+
+ return err;
+}
diff --git a/drumgizmo/output/coreaudio.h b/drumgizmo/output/coreaudio.h
index 731ba47..69b371f 100644
--- a/drumgizmo/output/coreaudio.h
+++ b/drumgizmo/output/coreaudio.h
@@ -26,14 +26,15 @@
*/
#pragma once
+#include <memory>
+
#include <audiotypes.h>
-#include <CoreAudio/CoreAudio.h>
-#include <CoreServices/CoreServices.h>
-#include <AudioUnit/AudioUnit.h>
-#include <AudioUnit/AUComponent.h>
#include "audiooutputengine.h"
+struct AudioTimeStamp;
+struct AudioBufferList;
+
class CoreAudioOutputEngine
: public AudioOutputEngine
{
@@ -41,48 +42,25 @@ public:
CoreAudioOutputEngine();
~CoreAudioOutputEngine();
- // based on AudioOutputEngine
+ // From AudioOutputEngine:
bool init(const Channels& chan) override;
void setParm(const std::string& parm, const std::string& value) override;
bool start() override;
void stop() override;
- void pre(size_t nsamples) override;
- void run(int ch, sample_t* samples, size_t nsamples) override;
- void post(size_t nsamples) override;
+ void pre(std::size_t nsamples) override;
+ void run(int ch, sample_t* samples, std::size_t nsamples) override;
+ void post(std::size_t nsamples) override;
size_t getSamplerate() const override;
+ std::size_t getBufferSize() const override;
bool isFreewheeling() const override;
private:
- AudioDeviceID device_id{kAudioDeviceUnknown};
- std::string id;
- std::uint32_t frames{1024u};
- std::uint32_t samplerate{44100u};
- AudioUnit au_hal;
- AudioBufferList* input_list;
-
- // libao:
-static OSStatus audioCallback (void *inRefCon,
- AudioUnitRenderActionFlags *inActionFlags,
- const AudioTimeStamp *inTimeStamp,
- UInt32 inBusNumber,
- UInt32 inNumberFrames,
- AudioBufferList *ioData);
-
- AudioDeviceID outputDevice;
- ComponentInstance outputAudioUnit;
- int output_p;
-
- /* Keep track of whether the output stream has actually been
- started/stopped */
- Boolean started;
- Boolean isStopping;
-
- /* Our internal queue of samples waiting to be consumed by
- CoreAudio */
- void *buffer;
- unsigned int bufferByteCount;
- unsigned int firstValidByteOffset;
- unsigned int validByteCount;
+ std::unique_ptr<struct RAII> raii;
- unsigned int buffer_time;
+ static int render(void *user_data,
+ std::uint32_t *action_flags,
+ const AudioTimeStamp *timestamp,
+ std::uint32_t bus_number,
+ std::uint32_t number_frames,
+ AudioBufferList *io_data);
};