blob: 1054b68e4e918f3765796a400ca5f8a6551465f3 [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 "AudioStreamInSource"
//#define LOG_NDEBUG 0
#include <cutils/compiler.h>
#include <utils/Log.h>
#include <media/audiohal/StreamHalInterface.h>
#include <media/nbaio/AudioStreamInSource.h>
namespace android {
AudioStreamInSource::AudioStreamInSource(sp<StreamInHalInterface> stream) :
NBAIO_Source(),
mStream(stream),
mStreamBufferSizeBytes(0),
mFramesOverrun(0),
mOverruns(0)
{
ALOG_ASSERT(stream != 0);
}
AudioStreamInSource::~AudioStreamInSource()
{
mStream.clear();
}
ssize_t AudioStreamInSource::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_in_mask(channelMask), streamFormat);
mFrameSize = Format_frameSize(mFormat);
}
return NBAIO_Source::negotiate(offers, numOffers, counterOffers, numCounterOffers);
}
int64_t AudioStreamInSource::framesOverrun()
{
uint32_t framesOverrun;
status_t result = mStream->getInputFramesLost(&framesOverrun);
if (result == OK && framesOverrun > 0) {
mFramesOverrun += framesOverrun;
// FIXME only increment for contiguous ranges
++mOverruns;
} else if (result != OK) {
ALOGE("Error when retrieving lost frames count from HAL: %d", result);
}
return mFramesOverrun;
}
ssize_t AudioStreamInSource::read(void *buffer, size_t count)
{
if (CC_UNLIKELY(!Format_isValid(mFormat))) {
return NEGOTIATE;
}
size_t bytesRead;
status_t result = mStream->read(buffer, count * mFrameSize, &bytesRead);
if (result == OK && bytesRead > 0) {
size_t framesRead = bytesRead / mFrameSize;
mFramesRead += framesRead;
return framesRead;
} else {
ALOGE_IF(result != OK, "Error while reading data from HAL: %d", result);
return bytesRead;
}
}
} // namespace android