You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
90 lines
2.9 KiB
90 lines
2.9 KiB
/* |
|
* 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 ×tamp) |
|
{ |
|
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
|
|
|