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channels/rdpsnd: fix audio duration computation for GSM610 format

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This commit is contained in:
Marc-André Moreau 2013-12-11 17:21:29 -05:00
parent 95a452e77f
commit f890771871
2 changed files with 29 additions and 50 deletions
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65
channels/rdpsnd/client/mac/rdpsnd_mac.c
View File

@ -51,9 +51,7 @@ struct rdpsnd_mac_plugin
int audioBufferIndex;
AudioQueueRef audioQueue;
AudioConverterRef audioConverter;
AudioStreamBasicDescription inputAudioFormat;
AudioStreamBasicDescription outputAudioFormat;
AudioStreamBasicDescription audioFormat;
AudioQueueBufferRef audioBuffers[MAC_AUDIO_QUEUE_NUM_BUFFERS];
};
typedef struct rdpsnd_mac_plugin rdpsndMacPlugin;
@ -65,7 +63,6 @@ static void mac_audio_queue_output_cb(void* inUserData, AudioQueueRef inAQ, Audi
static void rdpsnd_mac_set_format(rdpsndDevicePlugin* device, AUDIO_FORMAT* format, int latency)
{
OSStatus status;
rdpsndMacPlugin* mac = (rdpsndMacPlugin*) device;
mac->latency = (UINT32) latency;
@ -74,61 +71,33 @@ static void rdpsnd_mac_set_format(rdpsndDevicePlugin* device, AUDIO_FORMAT* form
switch (format->wFormatTag)
{
case WAVE_FORMAT_ALAW:
mac->inputAudioFormat.mFormatID = kAudioFormatALaw;
mac->audioFormat.mFormatID = kAudioFormatALaw;
break;
case WAVE_FORMAT_MULAW:
mac->inputAudioFormat.mFormatID = kAudioFormatULaw;
mac->audioFormat.mFormatID = kAudioFormatULaw;
break;
case WAVE_FORMAT_PCM:
mac->inputAudioFormat.mFormatID = kAudioFormatLinearPCM;
mac->audioFormat.mFormatID = kAudioFormatLinearPCM;
break;
case WAVE_FORMAT_GSM610:
mac->inputAudioFormat.mFormatID = kAudioFormatMicrosoftGSM;
mac->audioFormat.mFormatID = kAudioFormatMicrosoftGSM;
break;
default:
break;
}
mac->inputAudioFormat.mSampleRate = format->nSamplesPerSec;
mac->inputAudioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
mac->inputAudioFormat.mFramesPerPacket = 1;
mac->inputAudioFormat.mChannelsPerFrame = format->nChannels;
mac->inputAudioFormat.mBitsPerChannel = format->wBitsPerSample;
mac->inputAudioFormat.mBytesPerFrame = (format->wBitsPerSample * format->nChannels) / 8;
mac->inputAudioFormat.mBytesPerPacket = format->nBlockAlign;
mac->outputAudioFormat.mFormatID = kAudioFormatLinearPCM;
mac->outputAudioFormat.mSampleRate = 44100;
mac->outputAudioFormat.mFormatFlags = kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
mac->outputAudioFormat.mFramesPerPacket = 1;
mac->outputAudioFormat.mChannelsPerFrame = 2;
mac->outputAudioFormat.mBitsPerChannel = 16;
mac->outputAudioFormat.mBytesPerFrame = (16 * 2) / 8;
mac->outputAudioFormat.mBytesPerPacket = 4;
status = AudioConverterNew(&(mac->inputAudioFormat),
&(mac->outputAudioFormat), &(mac->audioConverter));
if (status != 0)
{
fprintf(stderr, "AudioConverterNew failure\n");
return;
}
SInt32 channelMap[2] = { 0, 0 };
status = AudioConverterSetProperty(mac->audioConverter, kAudioConverterChannelMap,
sizeof(channelMap), channelMap);
if (status != 0)
{
fprintf(stderr, "AudioConverterSetProperty kAudioConverterChannelMap failure\n");
return;
}
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;
rdpsnd_print_audio_format(format);
}
@ -147,7 +116,7 @@ static void rdpsnd_mac_open(rdpsndDevicePlugin* device, AUDIO_FORMAT* format, in
device->SetFormat(device, format, 0);
status = AudioQueueNewOutput(&(mac->inputAudioFormat),
status = AudioQueueNewOutput(&(mac->audioFormat),
mac_audio_queue_output_cb, mac,
NULL, NULL, 0, &(mac->audioQueue));
@ -217,11 +186,11 @@ static BOOL rdpsnd_mac_format_supported(rdpsndDevicePlugin* device, AUDIO_FORMAT
}
else if (format->wFormatTag == WAVE_FORMAT_ALAW)
{
return FALSE;
return TRUE;
}
else if (format->wFormatTag == WAVE_FORMAT_MULAW)
{
return FALSE;
return TRUE;
}
else if (format->wFormatTag == WAVE_FORMAT_GSM610)
{
@ -288,7 +257,7 @@ static void rdpsnd_mac_play(rdpsndDevicePlugin* device, BYTE* data, int size)
audioBuffer = mac->audioBuffers[mac->audioBufferIndex];
length = size > MAC_AUDIO_QUEUE_BUFFER_SIZE ? MAC_AUDIO_QUEUE_BUFFER_SIZE : size;
length = size > audioBuffer->mAudioDataBytesCapacity ? audioBuffer->mAudioDataBytesCapacity : size;
CopyMemory(audioBuffer->mAudioData, data, length);
audioBuffer->mAudioDataByteSize = length;

14
libfreerdp/codec/audio.c
View File

@ -29,14 +29,24 @@ UINT32 rdpsnd_compute_audio_time_length(AUDIO_FORMAT* format, int size)
{
UINT32 mstime;
UINT32 wSamples;
UINT16 nSamplesPerBlock;
/**
* [MSDN-AUDIOFORMAT]:
* http://msdn.microsoft.com/en-us/library/ms713497.aspx
*/
wSamples = (size * 8) / format->wBitsPerSample;
mstime = (((wSamples * 1000) / format->nSamplesPerSec) / format->nChannels);
if (format->wFormatTag == WAVE_FORMAT_GSM610)
{
nSamplesPerBlock = *((UINT16*) format->data);
wSamples = (size / format->nBlockAlign) * nSamplesPerBlock;
mstime = (((wSamples * 1000) / format->nSamplesPerSec) / format->nChannels);
}
else
{
wSamples = (size * 8) / format->wBitsPerSample;
mstime = (((wSamples * 1000) / format->nSamplesPerSec) / format->nChannels);
}
return mstime;
}