2013-08-29 05:02:48 +04:00
|
|
|
/**
|
|
|
|
* FreeRDP: A Remote Desktop Protocol Implementation
|
|
|
|
* Audio Output Virtual Channel
|
|
|
|
*
|
|
|
|
* Copyright 2013 Dell Software <Mike.McDonald@software.dell.com>
|
|
|
|
*
|
|
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
|
|
* you may not use this file except in compliance with the License.
|
|
|
|
* You may obtain a copy of the License at
|
|
|
|
*
|
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
*
|
|
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
|
|
* See the License for the specific language governing permissions and
|
|
|
|
* limitations under the License.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
|
|
#include "config.h"
|
|
|
|
#endif
|
2014-06-11 23:09:28 +04:00
|
|
|
|
2013-08-29 05:02:48 +04:00
|
|
|
#include <winpr/wtypes.h>
|
|
|
|
|
|
|
|
#include <freerdp/types.h>
|
|
|
|
#include <freerdp/codec/dsp.h>
|
|
|
|
|
|
|
|
#import <AudioToolbox/AudioToolbox.h>
|
|
|
|
|
|
|
|
#include "rdpsnd_main.h"
|
|
|
|
#include "TPCircularBuffer.h"
|
|
|
|
|
2013-08-29 05:37:45 +04:00
|
|
|
#define INPUT_BUFFER_SIZE 32768
|
|
|
|
#define CIRCULAR_BUFFER_SIZE (INPUT_BUFFER_SIZE * 4)
|
2013-08-29 05:02:48 +04:00
|
|
|
|
|
|
|
typedef struct rdpsnd_ios_plugin
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndDevicePlugin device;
|
|
|
|
AudioComponentInstance audio_unit;
|
|
|
|
TPCircularBuffer buffer;
|
|
|
|
BOOL is_opened;
|
|
|
|
BOOL is_playing;
|
2013-08-29 05:02:48 +04:00
|
|
|
} rdpsndIOSPlugin;
|
|
|
|
|
|
|
|
#define THIS(__ptr) ((rdpsndIOSPlugin*)__ptr)
|
|
|
|
|
|
|
|
static OSStatus rdpsnd_ios_render_cb(
|
2014-06-11 23:09:28 +04:00
|
|
|
void *inRefCon,
|
|
|
|
AudioUnitRenderActionFlags __unused *ioActionFlags,
|
|
|
|
const AudioTimeStamp __unused *inTimeStamp,
|
|
|
|
UInt32 inBusNumber,
|
|
|
|
UInt32 __unused inNumberFrames,
|
|
|
|
AudioBufferList *ioData
|
2013-08-29 05:02:48 +04:00
|
|
|
)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
if (inBusNumber != 0)
|
|
|
|
{
|
|
|
|
return noErr;
|
|
|
|
}
|
|
|
|
|
|
|
|
rdpsndIOSPlugin *p = THIS(inRefCon);
|
|
|
|
|
|
|
|
for (i = 0; i < ioData->mNumberBuffers; i++)
|
|
|
|
{
|
|
|
|
AudioBuffer* target_buffer = &ioData->mBuffers[i];
|
|
|
|
|
|
|
|
int32_t available_bytes = 0;
|
|
|
|
const void *buffer = TPCircularBufferTail(&p->buffer, &available_bytes);
|
|
|
|
if (buffer != NULL && available_bytes > 0)
|
|
|
|
{
|
|
|
|
const int bytes_to_copy = MIN((int32_t)target_buffer->mDataByteSize, available_bytes);
|
|
|
|
|
|
|
|
memcpy(target_buffer->mData, buffer, bytes_to_copy);
|
|
|
|
target_buffer->mDataByteSize = bytes_to_copy;
|
|
|
|
|
|
|
|
TPCircularBufferConsume(&p->buffer, bytes_to_copy);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
target_buffer->mDataByteSize = 0;
|
|
|
|
AudioOutputUnitStop(p->audio_unit);
|
|
|
|
p->is_playing = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return noErr;
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static BOOL rdpsnd_ios_format_supported(rdpsndDevicePlugin* __unused device, AUDIO_FORMAT* format)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
if (format->wFormatTag == WAVE_FORMAT_PCM)
|
|
|
|
{
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
2015-06-24 18:06:45 +03:00
|
|
|
static BOOL rdpsnd_ios_set_format(rdpsndDevicePlugin* __unused device, AUDIO_FORMAT* __unused format, int __unused latency)
|
2013-08-29 05:02:48 +04:00
|
|
|
{
|
2015-06-24 18:06:45 +03:00
|
|
|
return TRUE;
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
2015-06-24 18:06:45 +03:00
|
|
|
static BOOL rdpsnd_ios_set_volume(rdpsndDevicePlugin* __unused device, UINT32 __unused value)
|
2013-08-29 05:02:48 +04:00
|
|
|
{
|
2015-06-24 18:06:45 +03:00
|
|
|
return TRUE;
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void rdpsnd_ios_start(rdpsndDevicePlugin* device)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
|
|
|
|
|
|
|
/* If this device is not playing... */
|
|
|
|
if (!p->is_playing)
|
|
|
|
{
|
|
|
|
/* Start the device. */
|
|
|
|
int32_t available_bytes = 0;
|
|
|
|
TPCircularBufferTail(&p->buffer, &available_bytes);
|
|
|
|
if (available_bytes > 0)
|
|
|
|
{
|
|
|
|
p->is_playing = 1;
|
|
|
|
AudioOutputUnitStart(p->audio_unit);
|
|
|
|
}
|
|
|
|
}
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void rdpsnd_ios_stop(rdpsndDevicePlugin* __unused device)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
|
|
|
|
|
|
|
/* If the device is playing... */
|
|
|
|
if (p->is_playing)
|
|
|
|
{
|
|
|
|
/* Stop the device. */
|
|
|
|
AudioOutputUnitStop(p->audio_unit);
|
|
|
|
p->is_playing = 0;
|
|
|
|
|
|
|
|
/* Free all buffers. */
|
|
|
|
TPCircularBufferClear(&p->buffer);
|
|
|
|
}
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void rdpsnd_ios_play(rdpsndDevicePlugin* device, BYTE* data, int size)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
|
|
|
|
|
|
|
const BOOL ok = TPCircularBufferProduceBytes(&p->buffer, data, size);
|
|
|
|
if (!ok)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
rdpsnd_ios_start(device);
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
2015-06-24 18:06:45 +03:00
|
|
|
static BOOL rdpsnd_ios_open(rdpsndDevicePlugin* device, AUDIO_FORMAT* format, int __unused latency)
|
2013-08-29 05:02:48 +04:00
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
|
|
|
|
|
|
|
if (p->is_opened)
|
2015-06-24 18:06:45 +03:00
|
|
|
return TRUE;
|
2014-06-11 23:09:28 +04:00
|
|
|
|
|
|
|
/* Find the output audio unit. */
|
|
|
|
AudioComponentDescription desc;
|
|
|
|
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
|
|
|
|
desc.componentType = kAudioUnitType_Output;
|
|
|
|
desc.componentSubType = kAudioUnitSubType_RemoteIO;
|
|
|
|
desc.componentFlags = 0;
|
|
|
|
desc.componentFlagsMask = 0;
|
|
|
|
|
|
|
|
AudioComponent audioComponent = AudioComponentFindNext(NULL, &desc);
|
2015-06-24 18:06:45 +03:00
|
|
|
if (audioComponent == NULL)
|
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
|
|
|
|
/* Open the audio unit. */
|
|
|
|
OSStatus status = AudioComponentInstanceNew(audioComponent, &p->audio_unit);
|
2015-06-24 18:06:45 +03:00
|
|
|
if (status != 0)
|
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
|
|
|
|
/* Set the format for the AudioUnit. */
|
|
|
|
AudioStreamBasicDescription audioFormat = {0};
|
|
|
|
audioFormat.mSampleRate = format->nSamplesPerSec;
|
|
|
|
audioFormat.mFormatID = kAudioFormatLinearPCM;
|
|
|
|
audioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
|
|
|
|
audioFormat.mFramesPerPacket = 1; /* imminent property of the Linear PCM */
|
|
|
|
audioFormat.mChannelsPerFrame = format->nChannels;
|
|
|
|
audioFormat.mBitsPerChannel = format->wBitsPerSample;
|
|
|
|
audioFormat.mBytesPerFrame = (format->wBitsPerSample * format->nChannels) / 8;
|
|
|
|
audioFormat.mBytesPerPacket = audioFormat.mBytesPerFrame * audioFormat.mFramesPerPacket;
|
|
|
|
|
|
|
|
status = AudioUnitSetProperty(
|
|
|
|
p->audio_unit,
|
|
|
|
kAudioUnitProperty_StreamFormat,
|
|
|
|
kAudioUnitScope_Input,
|
|
|
|
0,
|
|
|
|
&audioFormat,
|
|
|
|
sizeof(audioFormat));
|
|
|
|
if (status != 0)
|
|
|
|
{
|
|
|
|
AudioComponentInstanceDispose(p->audio_unit);
|
|
|
|
p->audio_unit = NULL;
|
2015-06-24 18:06:45 +03:00
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Set up the AudioUnit callback. */
|
|
|
|
AURenderCallbackStruct callbackStruct = {0};
|
|
|
|
callbackStruct.inputProc = rdpsnd_ios_render_cb;
|
|
|
|
callbackStruct.inputProcRefCon = p;
|
|
|
|
status = AudioUnitSetProperty(
|
|
|
|
p->audio_unit,
|
|
|
|
kAudioUnitProperty_SetRenderCallback,
|
|
|
|
kAudioUnitScope_Input,
|
|
|
|
0,
|
|
|
|
&callbackStruct,
|
|
|
|
sizeof(callbackStruct));
|
|
|
|
if (status != 0)
|
|
|
|
{
|
|
|
|
AudioComponentInstanceDispose(p->audio_unit);
|
|
|
|
p->audio_unit = NULL;
|
2015-06-24 18:06:45 +03:00
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialize the AudioUnit. */
|
|
|
|
status = AudioUnitInitialize(p->audio_unit);
|
|
|
|
if (status != 0)
|
|
|
|
{
|
|
|
|
AudioComponentInstanceDispose(p->audio_unit);
|
|
|
|
p->audio_unit = NULL;
|
2015-06-24 18:06:45 +03:00
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate the circular buffer. */
|
|
|
|
const BOOL ok = TPCircularBufferInit(&p->buffer, CIRCULAR_BUFFER_SIZE);
|
|
|
|
if (!ok)
|
|
|
|
{
|
|
|
|
AudioUnitUninitialize(p->audio_unit);
|
|
|
|
AudioComponentInstanceDispose(p->audio_unit);
|
|
|
|
p->audio_unit = NULL;
|
2015-06-24 18:06:45 +03:00
|
|
|
return FALSE;
|
2014-06-11 23:09:28 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
p->is_opened = 1;
|
2015-06-24 18:06:45 +03:00
|
|
|
return TRUE;
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void rdpsnd_ios_close(rdpsndDevicePlugin* device)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
|
|
|
|
|
|
|
/* Make sure the device is stopped. */
|
|
|
|
rdpsnd_ios_stop(device);
|
|
|
|
|
|
|
|
/* If the device is open... */
|
|
|
|
if (p->is_opened)
|
|
|
|
{
|
|
|
|
/* Close the device. */
|
|
|
|
AudioUnitUninitialize(p->audio_unit);
|
|
|
|
AudioComponentInstanceDispose(p->audio_unit);
|
|
|
|
p->audio_unit = NULL;
|
|
|
|
p->is_opened = 0;
|
|
|
|
|
|
|
|
/* Destroy the circular buffer. */
|
|
|
|
TPCircularBufferCleanup(&p->buffer);
|
|
|
|
}
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void rdpsnd_ios_free(rdpsndDevicePlugin* device)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin *p = THIS(device);
|
2013-08-29 05:02:48 +04:00
|
|
|
|
2014-06-11 23:09:28 +04:00
|
|
|
/* Ensure the device is closed. */
|
|
|
|
rdpsnd_ios_close(device);
|
2013-08-29 05:02:48 +04:00
|
|
|
|
2014-06-11 23:09:28 +04:00
|
|
|
/* Free memory associated with the device. */
|
|
|
|
free(p);
|
2013-08-29 05:02:48 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef STATIC_CHANNELS
|
|
|
|
#define freerdp_rdpsnd_client_subsystem_entry ios_freerdp_rdpsnd_client_subsystem_entry
|
|
|
|
#endif
|
|
|
|
|
|
|
|
int freerdp_rdpsnd_client_subsystem_entry(PFREERDP_RDPSND_DEVICE_ENTRY_POINTS pEntryPoints)
|
|
|
|
{
|
2014-06-11 23:09:28 +04:00
|
|
|
rdpsndIOSPlugin* p = (rdpsndIOSPlugin*) calloc(1, sizeof(rdpsndIOSPlugin));
|
|
|
|
|
|
|
|
if (!p)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
p->device.Open = rdpsnd_ios_open;
|
|
|
|
p->device.FormatSupported = rdpsnd_ios_format_supported;
|
|
|
|
p->device.SetFormat = rdpsnd_ios_set_format;
|
|
|
|
p->device.SetVolume = rdpsnd_ios_set_volume;
|
|
|
|
p->device.Play = rdpsnd_ios_play;
|
|
|
|
p->device.Start = rdpsnd_ios_start;
|
|
|
|
p->device.Close = rdpsnd_ios_close;
|
|
|
|
p->device.Free = rdpsnd_ios_free;
|
|
|
|
|
|
|
|
pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, (rdpsndDevicePlugin*)p);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|