Hi,

I was working with sound channels and had a problem: How can I add a media
format to it ?
And How can I recognise the sound devices that are present in the computer ?

I have tried the following solutions. But it did not work. Any guess ?

Thanks in advance.

Claudio Miceli de Farias

PSoundChannel * MMedia::CreateSoundChannel(const OpalMediaFormat &
mediaFormat,
BOOL isSource)
{
PString deviceName;
PSoundChannel * soundChannel = new PSoundChannel();

if (isSource)
deviceName = soundChannel->GetDefaultDevice(
PSoundChannel::Recorder );
else
deviceName = soundChannel->GetDefaultDevice(
PSoundChannel::Player );

if (isSource) cout << "\n record device: " << deviceName << "\n";

if (soundChannel->Open(deviceName,
isSource ? PSoundChannel::Recorder
: PSoundChannel::Player,
1, mediaFormat.GetClockRate(), 16)) {
PTRACE(1, "PCSS\tOpened sound channel \"" << deviceName
<< "\" for " << (isSource ? "record" : "play") <<
"ing."); //nao estah entrando aqui
return soundChannel;
}
return soundChannel;
}

OpalMediaStream * MMedia::CreateMediaStream(const OpalMediaFormat &
mediaFormat,
unsigned
sessionID,BOOL isSource)
{
PSoundChannel * soundChannel = CreateSoundChannel(mediaFormat,
isSource);
if (soundChannel == NULL)
return NULL;

return new OpalAudioMediaStream(mediaFormat, sessionID, isSource,
soundChannelBuffers, soundChannel);
}

OpalAudioFormat::OpalAudioFormat (OPAL_G711_ULAW_64K,
RTP_DataFrame::PCMU, "PCMU", 8, 8, 240, 30, 256);
mediaFormats+= OpalMediaFormat::OpalMediaFormat(OPAL_G711_ULAW_64K);

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