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* The audio mixer is supposed to support getting/setting only a single value,

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such that all channels are affected.
* This fixes the "setvolume" command under Haiku.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30013 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2009-04-07 23:32:00 +00:00
parent 200da6828f
commit a353e90fa0
1 changed files with 53 additions and 15 deletions
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src/add-ons/media/media-add-ons/mixer/AudioMixer.cpp
+52 -14
View File
@@ -1127,8 +1127,8 @@ AudioMixer::Gain_to_dB(float gain)
status_t
AudioMixer::GetParameterValue(int32 id, bigtime_t *last_change,
void *value, size_t *ioSize)
AudioMixer::GetParameterValue(int32 id, bigtime_t *last_change, void *value,
size_t *ioSize)
{
TRACE("GetParameterValue: id 0x%08lx, ioSize %ld\n", id, *ioSize);
int param = PARAM(id);
@@ -1196,11 +1196,31 @@ AudioMixer::GetParameterValue(int32 id, bigtime_t *last_change,
static_cast<float *>(value)[0] = GAIN_TO_DB((output->GetOutputChannelGain(0) + output->GetOutputChannelGain(1)) / 2);
} else {
// multi channel control
if (*ioSize < output->GetOutputChannelCount() * sizeof(float))
goto err;
*ioSize = output->GetOutputChannelCount() * sizeof(float);
for (int chan = 0; chan < output->GetOutputChannelCount(); chan++)
static_cast<float *>(value)[chan] = GAIN_TO_DB(output->GetOutputChannelGain(chan));
if (*ioSize == sizeof(float)) {
// get combined gain for all controls
float gain = 0;
for (int channel = 0;
channel < output->GetOutputChannelCount();
channel++) {
gain += GAIN_TO_DB(
output->GetOutputChannelGain(channel));
}
static_cast<float *>(value)[0] = gain
/ output->GetOutputChannelCount();
} else {
if (*ioSize < output->GetOutputChannelCount()
* sizeof(float))
goto err;
*ioSize = output->GetOutputChannelCount() * sizeof(float);
for (int channel = 0;
channel < output->GetOutputChannelCount();
channel++) {
static_cast<float *>(value)[channel]
= GAIN_TO_DB(output->GetOutputChannelGain(channel));
}
}
}
}
if (PARAM_IS_BALANCE(id)) {
@@ -1313,9 +1333,10 @@ err:
return B_ERROR;
}
void
AudioMixer::SetParameterValue(int32 id, bigtime_t when,
const void *value, size_t size)
AudioMixer::SetParameterValue(int32 id, bigtime_t when, const void *value,
size_t size)
{
TRACE("SetParameterValue: id 0x%08lx, size %ld\n", id, size);
bool update = false;
@@ -1394,7 +1415,8 @@ AudioMixer::SetParameterValue(int32 id, bigtime_t when,
}
if (PARAM_IS_GAIN(id)) {
// output gain control
if (fCore->Settings()->UseBalanceControl() && output->GetOutputChannelCount() == 2 && 1 /*channel mask is stereo */) {
if (fCore->Settings()->UseBalanceControl()
&& output->GetOutputChannelCount() == 2 && 1 /*channel mask is stereo */) {
// single channel control + balance
float l = output->GetOutputChannelGain(0);
float r = output->GetOutputChannelGain(1);
@@ -1406,10 +1428,26 @@ AudioMixer::SetParameterValue(int32 id, bigtime_t when,
output->SetOutputChannelGain(1, output->GetOutputChannelGain(1) * f);
} else {
// multi channel control
if (size < output->GetOutputChannelCount() * sizeof(float))
goto err;
for (int chan = 0; chan < output->GetOutputChannelCount(); chan++)
output->SetOutputChannelGain(chan, DB_TO_GAIN(static_cast<const float *>(value)[chan]));
if (size == sizeof(float)) {
// set same volume for all channels
float gain = static_cast<const float *>(value)[0];
for (int channel = 0;
channel < output->GetOutputChannelCount();
channel++) {
output->SetOutputChannelGain(channel,
DB_TO_GAIN(gain));
}
} else {
if (size < output->GetOutputChannelCount() * sizeof(float))
goto err;
for (int channel = 0;
channel < output->GetOutputChannelCount();
channel++) {
output->SetOutputChannelGain(channel,
DB_TO_GAIN(static_cast<const float *>(
value)[channel]));
}
}
}
}
if (PARAM_IS_BALANCE(id)) {