// --------------------------------------------------------------------------
// SetSoundFormat(const wxSoundFormatBase& format) is one of the most
// important function of the wxSoundStream class. It prepares the stream to
// receive or send the data in a strict format. Normally, the sound stream
// should be ready to accept any format it is asked to manage but in certain
// cases, it really cannot: in that case it returns false. To have more
// details in the functionnalities of SetSoundFormat see
// wxSoundRouterStream::SetSoundFormat()
// --------------------------------------------------------------------------
bool wxSoundStream::SetSoundFormat(const wxSoundFormatBase& format)
{
// delete the previous prepared format
if (m_sndformat)
delete m_sndformat;
// create a new one by cloning the format passed in parameter
m_sndformat = format.Clone();
return true;
}
// --------------------------------------------------------------------------
// SetSoundFormat(): this function specifies which format we want and which
// format is available
// --------------------------------------------------------------------------
bool wxSoundStreamESD::SetSoundFormat(const wxSoundFormatBase& format)
{
#ifndef HAVE_ESD_H
m_snderror = wxSOUND_INVDEV;
return false;
#else
wxSoundFormatPcm *pcm_format;
if (format.GetType() != wxSOUND_PCM) {
m_snderror = wxSOUND_INVFRMT;
return false;
}
if (!m_esd_ok) {
m_snderror = wxSOUND_INVDEV;
return false;
}
if (m_sndformat)
delete m_sndformat;
m_sndformat = format.Clone();
if (!m_sndformat) {
m_snderror = wxSOUND_MEMERROR;
return false;
}
pcm_format = (wxSoundFormatPcm *)m_sndformat;
// Detect the best format
DetectBest(pcm_format);
m_snderror = wxSOUND_NOERROR;
if (*pcm_format != format) {
m_snderror = wxSOUND_NOEXACT;
return false;
}
return true;
#endif // defined HAVE_ESD_H
}
bool wxSoundStreamOSS::SetSoundFormat(const wxSoundFormatBase& format)
{
int tmp;
wxSoundFormatPcm *pcm_format;
if (format.GetType() != wxSOUND_PCM) {
m_snderror = wxSOUND_INVFRMT;
return false;
}
if (!m_oss_ok) {
m_snderror = wxSOUND_INVDEV;
return false;
}
if (m_sndformat)
delete m_sndformat;
m_sndformat = format.Clone();
if (!m_sndformat) {
m_snderror = wxSOUND_MEMERROR;
return false;
}
pcm_format = (wxSoundFormatPcm *)m_sndformat;
// We temporary open the OSS device
if (m_oss_stop) {
m_fd = open(m_devname.mb_str(), O_WRONLY);
if (m_fd == -1) {
m_snderror = wxSOUND_INVDEV;
return false;
}
}
// Set the sample rate field.
tmp = pcm_format->GetSampleRate();
ioctl(m_fd, SNDCTL_DSP_SPEED, &tmp);
pcm_format->SetSampleRate(tmp);
// Detect the best format
DetectBest(pcm_format);
// Try to apply it
SetupFormat(pcm_format);
tmp = pcm_format->GetChannels();
ioctl(m_fd, SNDCTL_DSP_CHANNELS, &tmp);
pcm_format->SetChannels(tmp);
// Close the OSS device
if (m_oss_stop)
close(m_fd);
m_snderror = wxSOUND_NOERROR;
if (*pcm_format != format) {
m_snderror = wxSOUND_NOEXACT;
return false;
}
return true;
}