blob: 85648994a028693c81e163a17a2c7daba4379e09 [file] [log] [blame]
/*
* Copyright (C) 2012 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 "AudioStreamOutSink"
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <audio_utils/clock.h>
#include <media/audiohal/StreamHalInterface.h>
#include <media/nbaio/AudioStreamOutSink.h>
namespace android {
AudioStreamOutSink::AudioStreamOutSink(sp<StreamOutHalInterface> stream) :
NBAIO_Sink(),
mStream(stream),
mStreamBufferSizeBytes(0)
{
ALOG_ASSERT(stream != 0);
}
AudioStreamOutSink::~AudioStreamOutSink()
{
mStream.clear();
}
ssize_t AudioStreamOutSink::negotiate(const NBAIO_Format offers[], size_t numOffers,
NBAIO_Format counterOffers[], size_t& numCounterOffers)
{
if (!Format_isValid(mFormat)) {
status_t result;
result = mStream->getBufferSize(&mStreamBufferSizeBytes);
if (result != OK) return result;
audio_format_t streamFormat;
uint32_t sampleRate;
audio_channel_mask_t channelMask;
result = mStream->getAudioProperties(&sampleRate, &channelMask, &streamFormat);
if (result != OK) return result;
mFormat = Format_from_SR_C(sampleRate,
audio_channel_count_from_out_mask(channelMask), streamFormat);
mFrameSize = Format_frameSize(mFormat);
}
return NBAIO_Sink::negotiate(offers, numOffers, counterOffers, numCounterOffers);
}
ssize_t AudioStreamOutSink::write(const void *buffer, size_t count)
{
if (!mNegotiated) {
return NEGOTIATE;
}
ALOG_ASSERT(Format_isValid(mFormat));
size_t written;
status_t ret = mStream->write(buffer, count * mFrameSize, &written);
if (ret == OK && written > 0) {
written /= mFrameSize;
mFramesWritten += written;
return written;
} else {
// FIXME verify HAL implementations are returning the correct error codes e.g. WOULD_BLOCK
ALOGE_IF(ret != OK, "Error while writing data to HAL: %d", ret);
return ret;
}
}
status_t AudioStreamOutSink::getTimestamp(ExtendedTimestamp &timestamp)
{
uint64_t position64;
struct timespec time;
if (mStream->getPresentationPosition(&position64, &time) != OK) {
return INVALID_OPERATION;
}
timestamp.mPosition[ExtendedTimestamp::LOCATION_KERNEL] = position64;
timestamp.mTimeNs[ExtendedTimestamp::LOCATION_KERNEL] = audio_utils_ns_from_timespec(&time);
return OK;
}
} // namespace android