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first working stereo version (algorithm part)

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This commit is contained in:
Volker Fischer 2010-03-22 16:38:15 +00:00
parent 7173108c77
commit 2a77dbda58
3 changed files with 137 additions and 40 deletions
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157
src/client.cpp
View file

@ -51,10 +51,11 @@ CClient::CClient ( const quint16 iPortNumber ) :
bFraSiFactSafeSupported ( false ),
iCeltNumCodedBytes ( CELT_NUM_BYTES_MONO_NORMAL_QUALITY ),
bCeltDoHighQuality ( false ),
bStereo ( false ),
bSndCrdConversionBufferRequired ( false ),
iSndCardMonoBlockSizeSamConvBuff ( 0 )
{
// init audio endocder/decoder (mono)
// init audio encoder/decoder (mono)
CeltModeMono = celt_mode_create (
SYSTEM_SAMPLE_RATE, 1, SYSTEM_FRAME_SIZE_SAMPLES, NULL );
@ -67,7 +68,7 @@ CClient::CClient ( const quint16 iPortNumber ) :
CELT_SET_COMPLEXITY_REQUEST, celt_int32_t ( 1 ) );
#endif
// init audio endocder/decoder (stereo)
// init audio encoder/decoder (stereo)
CeltModeStereo = celt_mode_create (
SYSTEM_SAMPLE_RATE, 2, SYSTEM_FRAME_SIZE_SAMPLES, NULL );
@ -511,22 +512,48 @@ void CClient::Init()
// inits for CELT coding
if ( bCeltDoHighQuality )
{
iCeltNumCodedBytes = CELT_NUM_BYTES_MONO_HIGH_QUALITY;
if ( bStereo )
{
iCeltNumCodedBytes = CELT_NUM_BYTES_STEREO_HIGH_QUALITY;
}
else
{
iCeltNumCodedBytes = CELT_NUM_BYTES_MONO_HIGH_QUALITY;
}
}
else
{
iCeltNumCodedBytes = CELT_NUM_BYTES_MONO_NORMAL_QUALITY;
if ( bStereo )
{
iCeltNumCodedBytes = CELT_NUM_BYTES_STEREO_NORMAL_QUALITY;
}
else
{
iCeltNumCodedBytes = CELT_NUM_BYTES_MONO_NORMAL_QUALITY;
}
}
vecCeltData.Init ( iCeltNumCodedBytes );
// init network buffers
vecsNetwork.Init ( iMonoBlockSizeSam );
// inits for network and channel
vecbyNetwData.Init ( iCeltNumCodedBytes );
if ( bStereo )
{
vecsNetwork.Init ( iStereoBlockSizeSam );
// set the channel network properties
Channel.SetAudioStreamProperties ( iCeltNumCodedBytes,
iSndCrdFrameSizeFactor,
1 /* only mono right now */ );
// set the channel network properties
Channel.SetAudioStreamProperties ( iCeltNumCodedBytes,
iSndCrdFrameSizeFactor,
2 );
}
else
{
vecsNetwork.Init ( iMonoBlockSizeSam );
// set the channel network properties
Channel.SetAudioStreamProperties ( iCeltNumCodedBytes,
iSndCrdFrameSizeFactor,
1 );
}
}
void CClient::AudioCallback ( CVector<int16_t>& psData, void* arg )
@ -614,16 +641,37 @@ void CClient::ProcessAudioDataIntern ( CVector<int16_t>& vecsStereoSndCrd )
// from double to short
if ( iAudioInFader == AUD_FADER_IN_MIDDLE )
{
// just mix channels together
for ( i = 0, j = 0; i < iMonoBlockSizeSam; i++, j += 2 )
if ( bStereo )
{
vecsNetwork[i] =
Double2Short ( ( vecdAudioStereo[j] +
vecdAudioStereo[j + 1] ) / 2 );
// perform type conversion
for ( i = 0; i < iStereoBlockSizeSam; i++ )
{
vecsNetwork[i] = Double2Short ( vecdAudioStereo[i] );
}
}
else
{
// mix channels together
for ( i = 0, j = 0; i < iMonoBlockSizeSam; i++, j += 2 )
{
vecsNetwork[i] =
Double2Short ( ( vecdAudioStereo[j] +
vecdAudioStereo[j + 1] ) / 2 );
}
}
}
else
{
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// TODO for stereo!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// make sure that in the middle position the two channels are
// amplified by 1/2, if the pan is set to one channel, this
// channel should have an amplification of 1
@ -659,12 +707,24 @@ void CClient::ProcessAudioDataIntern ( CVector<int16_t>& vecsStereoSndCrd )
for ( i = 0; i < iSndCrdFrameSizeFactor; i++ )
{
// encode current audio frame with CELT encoder
celt_encode ( CeltEncoderMono,
&vecsNetwork[i * SYSTEM_FRAME_SIZE_SAMPLES],
NULL,
&vecCeltData[0],
iCeltNumCodedBytes );
if ( bStereo )
{
// encode current audio frame with CELT encoder
celt_encode ( CeltEncoderStereo,
&vecsNetwork[i * 2 * SYSTEM_FRAME_SIZE_SAMPLES],
NULL,
&vecCeltData[0],
iCeltNumCodedBytes );
}
else
{
// encode current audio frame with CELT encoder
celt_encode ( CeltEncoderMono,
&vecsNetwork[i * SYSTEM_FRAME_SIZE_SAMPLES],
NULL,
&vecCeltData[0],
iCeltNumCodedBytes );
}
// send coded audio through the network
Socket.SendPacket ( Channel.PrepSendPacket ( vecCeltData ),
@ -691,29 +751,60 @@ void CClient::ProcessAudioDataIntern ( CVector<int16_t>& vecsStereoSndCrd )
// CELT decoding
if ( bReceiveDataOk )
{
celt_decode ( CeltDecoderMono,
&vecbyNetwData[0],
iCeltNumCodedBytes,
&vecsAudioSndCrdMono[i * SYSTEM_FRAME_SIZE_SAMPLES] );
if ( bStereo )
{
celt_decode ( CeltDecoderStereo,
&vecbyNetwData[0],
iCeltNumCodedBytes,
&vecsAudioSndCrdStereo[i * 2 * SYSTEM_FRAME_SIZE_SAMPLES] );
}
else
{
celt_decode ( CeltDecoderMono,
&vecbyNetwData[0],
iCeltNumCodedBytes,
&vecsAudioSndCrdMono[i * SYSTEM_FRAME_SIZE_SAMPLES] );
}
}
else
{
// lost packet
celt_decode ( CeltDecoderMono,
NULL,
0,
&vecsAudioSndCrdMono[i * SYSTEM_FRAME_SIZE_SAMPLES] );
if ( bStereo )
{
celt_decode ( CeltDecoderStereo,
NULL,
0,
&vecsAudioSndCrdStereo[i * 2 * SYSTEM_FRAME_SIZE_SAMPLES] );
}
else
{
celt_decode ( CeltDecoderMono,
NULL,
0,
&vecsAudioSndCrdMono[i * SYSTEM_FRAME_SIZE_SAMPLES] );
}
}
}
// check if channel is connected
if ( Channel.IsConnected() )
{
// copy mono data in stereo sound card buffer
for ( i = 0, j = 0; i < iMonoBlockSizeSam; i++, j += 2 )
if ( bStereo )
{
vecsStereoSndCrd[j] = vecsStereoSndCrd[j + 1] =
vecsAudioSndCrdMono[i];
// copy data
for ( i = 0; i < iStereoBlockSizeSam; i++ )
{
vecsStereoSndCrd[i] = vecsAudioSndCrdStereo[i];
}
}
else
{
// copy mono data in stereo sound card buffer
for ( i = 0, j = 0; i < iMonoBlockSizeSam; i++, j += 2 )
{
vecsStereoSndCrd[j] = vecsStereoSndCrd[j + 1] =
vecsAudioSndCrdMono[i];
}
}
}
else

18
src/client.h
View file

@ -57,18 +57,23 @@
/* Definitions ****************************************************************/
// audio in fader range
#define AUD_FADER_IN_MIN 0
#define AUD_FADER_IN_MAX 100
#define AUD_FADER_IN_MIDDLE ( AUD_FADER_IN_MAX / 2 )
#define AUD_FADER_IN_MIN 0
#define AUD_FADER_IN_MAX 100
#define AUD_FADER_IN_MIDDLE ( AUD_FADER_IN_MAX / 2 )
// audio reverberation range
#define AUD_REVERB_MAX 100
#define AUD_REVERB_MAX 100
// CELT number of coded bytes per audio packet
// 24: mono low/normal quality 156 kbsp (128) / 114 kbps (256)
// 44: mono high quality 216 kbps (128) / 174 kbps (256)
#define CELT_NUM_BYTES_MONO_NORMAL_QUALITY 24
#define CELT_NUM_BYTES_MONO_HIGH_QUALITY 44
#define CELT_NUM_BYTES_MONO_NORMAL_QUALITY 24
#define CELT_NUM_BYTES_MONO_HIGH_QUALITY 44
// 46: stereo low/normal quality 222 kbsp (128) / 180 kbps (256)
// 70: stereo high quality 294 kbps (128) / 252 kbps (256)
#define CELT_NUM_BYTES_STEREO_NORMAL_QUALITY 46
#define CELT_NUM_BYTES_STEREO_HIGH_QUALITY 70
/* Classes ********************************************************************/
@ -231,6 +236,7 @@ protected:
CELTDecoder* CeltDecoderStereo;
int iCeltNumCodedBytes;
bool bCeltDoHighQuality;
bool bStereo;
CVector<unsigned char> vecCeltData;
CSocket Socket;

2
src/clientsettingsdlgbase.ui
View file

@ -6,7 +6,7 @@
<x>0</x>
<y>0</y>
<width>535</width>
<height>382</height>
<height>374</height>
</rect>
</property>
<property name="windowTitle" >