void DeviceDescriptor::toAudioPort(struct audio_port *port) const
{
ALOGV("DeviceDescriptor::toAudioPort() handle %d type %x", mId, mDeviceType);
AudioPort::toAudioPort(port);
port->id = mId;
toAudioPortConfig(&port->active_config);
port->ext.device.type = mDeviceType;
port->ext.device.hw_module = mModule->mHandle;
strncpy(port->ext.device.address, mAddress.string(), AUDIO_DEVICE_MAX_ADDRESS_LEN);
}
void SwAudioOutputDescriptor::toAudioPort(
struct audio_port *port) const
{
ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle);
AudioOutputDescriptor::toAudioPort(port);
toAudioPortConfig(&port->active_config);
port->ext.mix.handle = mIoHandle;
port->ext.mix.latency_class =
mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL;
}
status_t AudioPortConfig::applyAudioPortConfig(const struct audio_port_config *config,
struct audio_port_config *backupConfig)
{
struct audio_port_config localBackupConfig;
status_t status = NO_ERROR;
localBackupConfig.config_mask = config->config_mask;
toAudioPortConfig(&localBackupConfig);
sp<AudioPort> audioport = getAudioPort();
if (audioport == 0) {
status = NO_INIT;
goto exit;
}
status = audioport->checkExactAudioProfile(config->sample_rate,
config->channel_mask,
config->format);
if (status != NO_ERROR) {
goto exit;
}
if (config->config_mask & AUDIO_PORT_CONFIG_SAMPLE_RATE) {
mSamplingRate = config->sample_rate;
}
if (config->config_mask & AUDIO_PORT_CONFIG_CHANNEL_MASK) {
mChannelMask = config->channel_mask;
}
if (config->config_mask & AUDIO_PORT_CONFIG_FORMAT) {
mFormat = config->format;
}
if (config->config_mask & AUDIO_PORT_CONFIG_GAIN) {
status = audioport->checkGain(&config->gain, config->gain.index);
if (status != NO_ERROR) {
goto exit;
}
mGain = config->gain;
}
exit:
if (status != NO_ERROR) {
applyAudioPortConfig(&localBackupConfig);
}
if (backupConfig != NULL) {
*backupConfig = localBackupConfig;
}
return status;
}