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92 lines
3.0 KiB
92 lines
3.0 KiB
/* |
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* Copyright (C) 2012 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#define LOG_TAG "AudioStreamInSource" |
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//#define LOG_NDEBUG 0 |
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#include <cutils/compiler.h> |
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#include <utils/Log.h> |
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#include <media/audiohal/StreamHalInterface.h> |
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#include <media/nbaio/AudioStreamInSource.h> |
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namespace android { |
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AudioStreamInSource::AudioStreamInSource(sp<StreamInHalInterface> stream) : |
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NBAIO_Source(), |
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mStream(stream), |
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mStreamBufferSizeBytes(0), |
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mFramesOverrun(0), |
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mOverruns(0) |
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{ |
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ALOG_ASSERT(stream != 0); |
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} |
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AudioStreamInSource::~AudioStreamInSource() |
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{ |
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mStream.clear(); |
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} |
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ssize_t AudioStreamInSource::negotiate(const NBAIO_Format offers[], size_t numOffers, |
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NBAIO_Format counterOffers[], size_t& numCounterOffers) |
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{ |
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if (!Format_isValid(mFormat)) { |
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status_t result; |
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result = mStream->getBufferSize(&mStreamBufferSizeBytes); |
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if (result != OK) return result; |
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audio_format_t streamFormat; |
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uint32_t sampleRate; |
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audio_channel_mask_t channelMask; |
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result = mStream->getAudioProperties(&sampleRate, &channelMask, &streamFormat); |
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if (result != OK) return result; |
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mFormat = Format_from_SR_C(sampleRate, |
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audio_channel_count_from_in_mask(channelMask), streamFormat); |
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mFrameSize = Format_frameSize(mFormat); |
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} |
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return NBAIO_Source::negotiate(offers, numOffers, counterOffers, numCounterOffers); |
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} |
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int64_t AudioStreamInSource::framesOverrun() |
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{ |
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uint32_t framesOverrun; |
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status_t result = mStream->getInputFramesLost(&framesOverrun); |
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if (result == OK && framesOverrun > 0) { |
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mFramesOverrun += framesOverrun; |
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// FIXME only increment for contiguous ranges |
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++mOverruns; |
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} else if (result != OK) { |
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ALOGE("Error when retrieving lost frames count from HAL: %d", result); |
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} |
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return mFramesOverrun; |
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} |
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ssize_t AudioStreamInSource::read(void *buffer, size_t count) |
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{ |
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if (CC_UNLIKELY(!Format_isValid(mFormat))) { |
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return NEGOTIATE; |
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} |
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size_t bytesRead; |
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status_t result = mStream->read(buffer, count * mFrameSize, &bytesRead); |
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if (result == OK && bytesRead > 0) { |
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size_t framesRead = bytesRead / mFrameSize; |
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mFramesRead += framesRead; |
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return framesRead; |
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} else { |
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ALOGE_IF(result != OK, "Error while reading data from HAL: %d", result); |
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return bytesRead; |
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} |
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} |
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} // namespace android
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