static int open_mixers(px_mixer *Px, UINT deviceIn, UINT deviceOut)
{
PxInfo*info;
MMRESULT res;
if (deviceIn == UINT_MAX && deviceOut == UINT_MAX) {
return FALSE;
}
if (!initialize(Px)) {
return FALSE;
}
info = (PxInfo *) Px->info;
info->hInputMixer = NULL;
info->hOutputMixer = NULL;
info->numInputs = 0;
info->muxID = 0;
info->speakerID = 0;
info->waveID = 0;
if (deviceIn != UINT_MAX) {
res = mixerOpen((LPHMIXER) &info->hInputMixer,
deviceIn,
0,
0,
MIXER_OBJECTF_MIXER);
if (res != MMSYSERR_NOERROR) {
return cleanup(Px);
}
info->muxID = find_ctrl(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
MIXERCONTROL_CONTROLTYPE_MUX);
if (info->muxID == -1) {
info->muxID = find_ctrl(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
MIXERCONTROL_CONTROLTYPE_MIXER);
}
info->numInputs = get_ctrls(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
&info->src);
if (info->numInputs == 0) {
return cleanup(Px);
}
}
if (deviceOut != UINT_MAX) {
res = mixerOpen((LPHMIXER) &info->hOutputMixer,
deviceOut,
0,
0,
MIXER_OBJECTF_MIXER);
if (res != MMSYSERR_NOERROR) {
return cleanup(Px);
}
info->speakerID = find_ctrl(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_DST_SPEAKERS,
MIXERCONTROL_CONTROLTYPE_VOLUME);
info->waveID = find_ctrl(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT,
MIXERCONTROL_CONTROLTYPE_VOLUME);
info->numOutputs = get_ctrls(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_DST_SPEAKERS,
&info->dst);
if (info->numOutputs == 0) {
return cleanup(Px);
}
}
return TRUE;
}
int open_mixers(px_mixer *Px, UINT deviceIn, UINT deviceOut)
{
PxInfo*info;
MMRESULT res;
OSVERSIONINFO verInfo;
memset(&verInfo, 0, sizeof(verInfo));
verInfo.dwOSVersionInfoSize = sizeof(verInfo);
GetVersionEx(&verInfo);
if (verInfo.dwMajorVersion >= 6) {
return open_ep_mixers(Px, deviceIn, deviceOut);
}
res = mixerGetID((HMIXEROBJ) (deviceIn == WAVE_MAPPER ? 0 : deviceIn),
&deviceIn,
MIXER_OBJECTF_WAVEIN);
if (res != MMSYSERR_NOERROR) {
return FALSE;
}
res = mixerGetID((HMIXEROBJ) (deviceOut == WAVE_MAPPER ? 0 : deviceOut),
&deviceOut,
MIXER_OBJECTF_WAVEIN);
if (res != MMSYSERR_NOERROR) {
return FALSE;
}
if (!initialize(Px)) {
return FALSE;
}
info = (PxInfo *) Px->info;
info->hInputMixer = NULL;
info->hOutputMixer = NULL;
info->numInputs = 0;
info->muxID = 0;
info->speakerID = 0;
info->waveID = 0;
if (deviceIn != UINT_MAX) {
res = mixerOpen((LPHMIXER) &info->hInputMixer,
deviceIn,
0,
0,
MIXER_OBJECTF_MIXER);
if (res != MMSYSERR_NOERROR) {
return cleanup(Px);
}
info->muxID = find_ctrl(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
MIXERCONTROL_CONTROLTYPE_MUX);
if (info->muxID == -1) {
info->muxID = find_ctrl(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
MIXERCONTROL_CONTROLTYPE_MIXER);
}
info->numInputs = get_ctrls(info->hInputMixer,
MIXERLINE_COMPONENTTYPE_DST_WAVEIN,
&info->src);
if (info->numInputs == 0) {
return cleanup(Px);
}
}
if (deviceOut != UINT_MAX) {
res = mixerOpen((LPHMIXER) &info->hOutputMixer,
deviceOut,
0,
0,
MIXER_OBJECTF_MIXER);
if (res != MMSYSERR_NOERROR) {
return cleanup(Px);
}
info->speakerID = find_ctrl(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_DST_SPEAKERS,
MIXERCONTROL_CONTROLTYPE_VOLUME);
info->waveID = find_ctrl(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT,
MIXERCONTROL_CONTROLTYPE_VOLUME);
info->numOutputs = get_ctrls(info->hOutputMixer,
MIXERLINE_COMPONENTTYPE_DST_SPEAKERS,
&info->dst);
if (info->numOutputs == 0) {
return cleanup(Px);
}
}
return TRUE;
}
