FreeRDP/channels/rdpsnd/client/mac/rdpsnd_mac.c

396 lines
10 KiB
C

/**
* FreeRDP: A Remote Desktop Protocol Implementation
* Audio Output Virtual Channel
*
* Copyright 2012 Laxmikant Rashinkar <LK.Rashinkar@gmail.com>
* Copyright 2015 Thincast Technologies GmbH
* Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
* Copyright 2016 Inuvika Inc.
* Copyright 2016 David PHAM-VAN <d.phamvan@inuvika.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
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <winpr/crt.h>
#include <freerdp/types.h>
#include <freerdp/codec/dsp.h>
#define __COREFOUNDATION_CFPLUGINCOM__ 1
#define IUNKNOWN_C_GUTS void *_reserved; void* QueryInterface; void* AddRef; void* Release
#include <AudioToolbox/AudioToolbox.h>
#include <AudioToolbox/AudioQueue.h>
#include "rdpsnd_main.h"
#define MAC_AUDIO_QUEUE_NUM_BUFFERS 10
#define MAC_AUDIO_QUEUE_BUFFER_SIZE 32768
struct rdpsnd_mac_plugin
{
rdpsndDevicePlugin device;
BOOL isOpen;
BOOL isPlaying;
UINT32 latency;
AUDIO_FORMAT format;
size_t lastAudioBufferIndex;
size_t audioBufferIndex;
AudioQueueRef audioQueue;
AudioStreamBasicDescription audioFormat;
AudioQueueBufferRef audioBuffers[MAC_AUDIO_QUEUE_NUM_BUFFERS];
Float64 lastStartTime;
int wformat;
int block_size;
FREERDP_DSP_CONTEXT* dsp_context;
};
typedef struct rdpsnd_mac_plugin rdpsndMacPlugin;
static void mac_audio_queue_output_cb(void* inUserData, AudioQueueRef inAQ, AudioQueueBufferRef inBuffer)
{
rdpsndMacPlugin* mac = (rdpsndMacPlugin*)inUserData;
if (inBuffer == mac->audioBuffers[mac->lastAudioBufferIndex]) {
AudioQueuePause(mac->audioQueue);
mac->isPlaying = FALSE;
}
}
static BOOL rdpsnd_mac_set_format(rdpsndDevicePlugin* device, AUDIO_FORMAT* format, int latency)
{
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
mac->latency = (UINT32) latency;
CopyMemory(&(mac->format), format, sizeof(AUDIO_FORMAT));
mac->audioFormat.mSampleRate = format->nSamplesPerSec;
mac->audioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
mac->audioFormat.mFramesPerPacket = 1;
mac->audioFormat.mChannelsPerFrame = format->nChannels;
mac->audioFormat.mBitsPerChannel = format->wBitsPerSample;
mac->audioFormat.mBytesPerFrame = (format->wBitsPerSample * format->nChannels) / 8;
mac->audioFormat.mBytesPerPacket = format->nBlockAlign;
mac->audioFormat.mReserved = 0;
switch (format->wFormatTag)
{
case WAVE_FORMAT_ALAW:
mac->audioFormat.mFormatID = kAudioFormatALaw;
break;
case WAVE_FORMAT_MULAW:
mac->audioFormat.mFormatID = kAudioFormatULaw;
break;
case WAVE_FORMAT_PCM:
mac->audioFormat.mFormatID = kAudioFormatLinearPCM;
break;
case WAVE_FORMAT_ADPCM:
case WAVE_FORMAT_DVI_ADPCM:
mac->audioFormat.mFormatID = kAudioFormatLinearPCM;
mac->audioFormat.mBitsPerChannel = 16;
mac->audioFormat.mBytesPerFrame = (16 * format->nChannels) / 8;
mac->audioFormat.mBytesPerPacket = mac->audioFormat.mFramesPerPacket * mac->audioFormat.mBytesPerFrame;
break;
case WAVE_FORMAT_GSM610:
mac->audioFormat.mFormatID = kAudioFormatMicrosoftGSM;
break;
default:
break;
}
mac->wformat = format->wFormatTag;
mac->block_size = format->nBlockAlign;
rdpsnd_print_audio_format(format);
return TRUE;
}
static BOOL rdpsnd_mac_open(rdpsndDevicePlugin* device, AUDIO_FORMAT* format, int latency)
{
int index;
OSStatus status;
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (mac->isOpen)
return TRUE;
mac->audioBufferIndex = 0;
if (!device->SetFormat(device, format, 0))
{
WLog_ERR(TAG, "SetFormat failure\n");
return FALSE;
}
freerdp_dsp_context_reset_adpcm(mac->dsp_context);
status = AudioQueueNewOutput(&(mac->audioFormat),
mac_audio_queue_output_cb, mac,
NULL, NULL, 0, &(mac->audioQueue));
if (status != 0)
{
WLog_ERR(TAG, "AudioQueueNewOutput failure\n");
return FALSE;
}
UInt32 DecodeBufferSizeFrames;
UInt32 propertySize = sizeof(DecodeBufferSizeFrames);
status = AudioQueueGetProperty(mac->audioQueue,
kAudioQueueProperty_DecodeBufferSizeFrames,
&DecodeBufferSizeFrames,
&propertySize);
if (status != 0)
{
WLog_DBG(TAG, "AudioQueueGetProperty failure: kAudioQueueProperty_DecodeBufferSizeFrames\n");
return FALSE;
}
for (index = 0; index < MAC_AUDIO_QUEUE_NUM_BUFFERS; index++)
{
status = AudioQueueAllocateBuffer(mac->audioQueue, MAC_AUDIO_QUEUE_BUFFER_SIZE, &mac->audioBuffers[index]);
if (status != 0)
{
WLog_ERR(TAG, "AudioQueueAllocateBuffer failed\n");
return FALSE;
}
}
mac->lastStartTime = 0;
mac->isOpen = TRUE;
return TRUE;
}
static void rdpsnd_mac_close(rdpsndDevicePlugin* device)
{
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (mac->isOpen)
{
size_t index;
mac->isOpen = FALSE;
AudioQueueStop(mac->audioQueue, true);
for (index = 0; index < MAC_AUDIO_QUEUE_NUM_BUFFERS; index++)
{
AudioQueueFreeBuffer(mac->audioQueue, mac->audioBuffers[index]);
}
AudioQueueDispose(mac->audioQueue, true);
mac->audioQueue = NULL;
mac->isPlaying = FALSE;
}
}
static void rdpsnd_mac_free(rdpsndDevicePlugin* device)
{
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
device->Close(device);
freerdp_dsp_context_free(mac->dsp_context);
free(mac);
}
static BOOL rdpsnd_mac_format_supported(rdpsndDevicePlugin* device, AUDIO_FORMAT* format)
{
switch (format->wFormatTag)
{
case WAVE_FORMAT_PCM:
case WAVE_FORMAT_ALAW:
case WAVE_FORMAT_MULAW:
case WAVE_FORMAT_ADPCM:
case WAVE_FORMAT_DVI_ADPCM:
return TRUE;
case WAVE_FORMAT_GSM610:
return FALSE;
}
return FALSE;
}
static BOOL rdpsnd_mac_set_volume(rdpsndDevicePlugin* device, UINT32 value)
{
OSStatus status;
Float32 fVolume;
UINT16 volumeLeft;
UINT16 volumeRight;
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (!mac->audioQueue)
return FALSE;
volumeLeft = (value & 0xFFFF);
volumeRight = ((value >> 16) & 0xFFFF);
fVolume = ((float) volumeLeft) / 65535.0;
status = AudioQueueSetParameter(mac->audioQueue, kAudioQueueParam_Volume, fVolume);
if (status != 0)
{
WLog_ERR(TAG, "AudioQueueSetParameter kAudioQueueParam_Volume failed: %f\n", fVolume);
return FALSE;
}
return TRUE;
}
static void rdpsnd_mac_start(rdpsndDevicePlugin* device)
{
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (!mac->isPlaying)
{
OSStatus status;
if (!mac->audioQueue)
return;
status = AudioQueueStart(mac->audioQueue, NULL);
if (status != 0)
{
WLog_ERR(TAG, "AudioQueueStart failed\n");
}
mac->isPlaying = TRUE;
}
}
static BOOL rdpsnd_mac_wave_decode(rdpsndDevicePlugin* device, RDPSND_WAVE* wave)
{
int length;
BYTE* data;
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (mac->wformat == WAVE_FORMAT_ADPCM)
{
mac->dsp_context->decode_ms_adpcm(mac->dsp_context, wave->data, wave->length, mac->format.nChannels, mac->block_size);
length = mac->dsp_context->adpcm_size;
data = mac->dsp_context->adpcm_buffer;
}
else if (mac->wformat == WAVE_FORMAT_DVI_ADPCM)
{
mac->dsp_context->decode_ima_adpcm(mac->dsp_context, wave->data, wave->length, mac->format.nChannels, mac->block_size);
length = mac->dsp_context->adpcm_size;
data = mac->dsp_context->adpcm_buffer;
}
else
{
length = wave->length;
data = wave->data;
}
wave->data = (BYTE*) malloc(length);
CopyMemory(wave->data, data, length);
wave->length = length;
return TRUE;
}
static void rdpsnd_mac_waveplay(rdpsndDevicePlugin* device, RDPSND_WAVE* wave)
{
int length;
AudioQueueBufferRef audioBuffer;
AudioTimeStamp outActualStartTime;
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
if (!mac->isOpen)
return;
audioBuffer = mac->audioBuffers[mac->audioBufferIndex];
length = wave->length > audioBuffer->mAudioDataBytesCapacity ? audioBuffer->mAudioDataBytesCapacity : wave->length;
CopyMemory(audioBuffer->mAudioData, wave->data, length);
free(wave->data);
wave->data = NULL;
audioBuffer->mAudioDataByteSize = length;
audioBuffer->mUserData = wave;
AudioQueueEnqueueBufferWithParameters(mac->audioQueue, audioBuffer, 0, 0, 0, 0, 0, NULL, NULL, &outActualStartTime);
UInt64 startTimeDelta = (outActualStartTime.mSampleTime - mac->lastStartTime) / 100.0;
wave->wLocalTimeB = wave->wLocalTimeA + startTimeDelta + wave->wAudioLength;
wave->wTimeStampB = wave->wTimeStampA + wave->wLocalTimeB - wave->wLocalTimeA;
mac->lastStartTime = outActualStartTime.mSampleTime;
mac->lastAudioBufferIndex = mac->audioBufferIndex;
mac->audioBufferIndex++;
mac->audioBufferIndex %= MAC_AUDIO_QUEUE_NUM_BUFFERS;
device->Start(device);
}
#ifdef BUILTIN_CHANNELS
#define freerdp_rdpsnd_client_subsystem_entry mac_freerdp_rdpsnd_client_subsystem_entry
#else
#define freerdp_rdpsnd_client_subsystem_entry FREERDP_API freerdp_rdpsnd_client_subsystem_entry
#endif
/**
* Function description
*
* @return 0 on success, otherwise a Win32 error code
*/
UINT freerdp_rdpsnd_client_subsystem_entry(PFREERDP_RDPSND_DEVICE_ENTRY_POINTS pEntryPoints)
{
rdpsndMacPlugin* mac;
mac = (rdpsndMacPlugin*) calloc(1, sizeof(rdpsndMacPlugin));
if (!mac)
return CHANNEL_RC_NO_MEMORY;
mac->device.Open = rdpsnd_mac_open;
mac->device.FormatSupported = rdpsnd_mac_format_supported;
mac->device.SetFormat = rdpsnd_mac_set_format;
mac->device.SetVolume = rdpsnd_mac_set_volume;
mac->device.WaveDecode = rdpsnd_mac_wave_decode;
mac->device.WavePlay = rdpsnd_mac_waveplay;
mac->device.Start = rdpsnd_mac_start;
mac->device.Close = rdpsnd_mac_close;
mac->device.Free = rdpsnd_mac_free;
mac->dsp_context = freerdp_dsp_context_new();
pEntryPoints->pRegisterRdpsndDevice(pEntryPoints->rdpsnd, (rdpsndDevicePlugin*) mac);
return CHANNEL_RC_OK;
}