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/*
**
** Copyright 2007, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#define LOG_TAG "AudioHwDevice"
//#define LOG_NDEBUG 0
#include <hardware/audio.h>
#include <utils/Log.h>
#include <audio_utils/spdif/SPDIFEncoder.h>
#include "AudioHwDevice.h"
#include "AudioStreamOut.h"
#include "SpdifStreamOut.h"
namespace android {
// ----------------------------------------------------------------------------
status_t AudioHwDevice::openOutputStream(
AudioStreamOut **ppStreamOut,
audio_io_handle_t handle,
audio_devices_t devices,
audio_output_flags_t flags,
struct audio_config *config,
const char *address)
{
struct audio_config originalConfig = *config;
AudioStreamOut *outputStream = new AudioStreamOut(this, flags);
// Try to open the HAL first using the current format.
ALOGV("openOutputStream(), try "
" sampleRate %d, Format %#x, "
"channelMask %#x",
config->sample_rate,
config->format,
config->channel_mask);
status_t status = outputStream->open(handle, devices, config, address);
if (status != NO_ERROR) {
delete outputStream;
outputStream = NULL;
// FIXME Look at any modification to the config.
// The HAL might modify the config to suggest a wrapped format.
// Log this so we can see what the HALs are doing.
ALOGI("openOutputStream(), HAL returned"
" sampleRate %d, Format %#x, "
"channelMask %#x, status %d",
config->sample_rate,
config->format,
config->channel_mask,
status);
// If the data is encoded then try again using wrapped PCM.
bool wrapperNeeded = !audio_is_linear_pcm(originalConfig.format)
&& ((flags & AUDIO_OUTPUT_FLAG_DIRECT) != 0)
&& ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0);
if (wrapperNeeded) {
if (SPDIFEncoder::isFormatSupported(originalConfig.format)) {
outputStream = new SpdifStreamOut(this, flags, originalConfig.format);
status = outputStream->open(handle, devices, &originalConfig, address);
if (status != NO_ERROR) {
ALOGE("ERROR - openOutputStream(), SPDIF open returned %d",
status);
delete outputStream;
outputStream = NULL;
}
} else {
ALOGE("ERROR - openOutputStream(), SPDIFEncoder does not support format 0x%08x",
originalConfig.format);
}
}
}
*ppStreamOut = outputStream;
return status;
}
}; // namespace android
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