2c9c83d7ec
A few other cleanups, most notably using a sane parameter to specify the number of channels. BUG=chromium:469814 R=tina.legrand@webrtc.org Review URL: https://webrtc-codereview.appspot.com/46729004 Cr-Commit-Position: refs/heads/master@{#8894}
404 lines
12 KiB
C++
404 lines
12 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/utility/source/file_player_impl.h"
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#include "webrtc/system_wrappers/interface/logging.h"
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namespace webrtc {
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FilePlayer* FilePlayer::CreateFilePlayer(uint32_t instanceID,
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FileFormats fileFormat)
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{
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switch(fileFormat)
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{
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case kFileFormatWavFile:
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case kFileFormatCompressedFile:
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case kFileFormatPreencodedFile:
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case kFileFormatPcm16kHzFile:
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case kFileFormatPcm8kHzFile:
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case kFileFormatPcm32kHzFile:
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// audio formats
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return new FilePlayerImpl(instanceID, fileFormat);
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default:
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assert(false);
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return NULL;
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}
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}
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void FilePlayer::DestroyFilePlayer(FilePlayer* player)
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{
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delete player;
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}
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FilePlayerImpl::FilePlayerImpl(const uint32_t instanceID,
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const FileFormats fileFormat)
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: _instanceID(instanceID),
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_fileFormat(fileFormat),
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_fileModule(*MediaFile::CreateMediaFile(instanceID)),
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_decodedLengthInMS(0),
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_audioDecoder(instanceID),
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_codec(),
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_numberOf10MsPerFrame(0),
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_numberOf10MsInDecoder(0),
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_resampler(),
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_scaling(1.0)
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{
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_codec.plfreq = 0;
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}
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FilePlayerImpl::~FilePlayerImpl()
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{
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MediaFile::DestroyMediaFile(&_fileModule);
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}
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int32_t FilePlayerImpl::Frequency() const
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{
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if(_codec.plfreq == 0)
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{
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return -1;
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}
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// Make sure that sample rate is 8,16 or 32 kHz. E.g. WAVE files may have
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// other sampling rates.
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if(_codec.plfreq == 11000)
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{
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return 16000;
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}
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else if(_codec.plfreq == 22000)
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{
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return 32000;
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}
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else if(_codec.plfreq == 44000)
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{
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return 32000;
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}
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else if(_codec.plfreq == 48000)
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{
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return 32000;
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}
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else
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{
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return _codec.plfreq;
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}
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}
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int32_t FilePlayerImpl::AudioCodec(CodecInst& audioCodec) const
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{
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audioCodec = _codec;
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return 0;
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}
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int32_t FilePlayerImpl::Get10msAudioFromFile(
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int16_t* outBuffer,
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int& lengthInSamples,
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int frequencyInHz)
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{
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if(_codec.plfreq == 0)
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{
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LOG(LS_WARNING) << "Get10msAudioFromFile() playing not started!"
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<< " codec freq = " << _codec.plfreq
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<< ", wanted freq = " << frequencyInHz;
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return -1;
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}
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AudioFrame unresampledAudioFrame;
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if(STR_CASE_CMP(_codec.plname, "L16") == 0)
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{
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unresampledAudioFrame.sample_rate_hz_ = _codec.plfreq;
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// L16 is un-encoded data. Just pull 10 ms.
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size_t lengthInBytes =
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sizeof(unresampledAudioFrame.data_);
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if (_fileModule.PlayoutAudioData(
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(int8_t*)unresampledAudioFrame.data_,
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lengthInBytes) == -1)
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{
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// End of file reached.
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return -1;
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}
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if(lengthInBytes == 0)
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{
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lengthInSamples = 0;
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return 0;
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}
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// One sample is two bytes.
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unresampledAudioFrame.samples_per_channel_ =
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(uint16_t)lengthInBytes >> 1;
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} else {
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// Decode will generate 10 ms of audio data. PlayoutAudioData(..)
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// expects a full frame. If the frame size is larger than 10 ms,
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// PlayoutAudioData(..) data should be called proportionally less often.
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int16_t encodedBuffer[MAX_AUDIO_BUFFER_IN_SAMPLES];
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size_t encodedLengthInBytes = 0;
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if(++_numberOf10MsInDecoder >= _numberOf10MsPerFrame)
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{
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_numberOf10MsInDecoder = 0;
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size_t bytesFromFile = sizeof(encodedBuffer);
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if (_fileModule.PlayoutAudioData((int8_t*)encodedBuffer,
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bytesFromFile) == -1)
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{
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// End of file reached.
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return -1;
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}
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encodedLengthInBytes = bytesFromFile;
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}
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if(_audioDecoder.Decode(unresampledAudioFrame,frequencyInHz,
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(int8_t*)encodedBuffer,
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encodedLengthInBytes) == -1)
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{
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return -1;
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}
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}
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int outLen = 0;
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if(_resampler.ResetIfNeeded(unresampledAudioFrame.sample_rate_hz_,
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frequencyInHz, 1))
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{
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LOG(LS_WARNING) << "Get10msAudioFromFile() unexpected codec.";
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// New sampling frequency. Update state.
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outLen = frequencyInHz / 100;
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memset(outBuffer, 0, outLen * sizeof(int16_t));
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return 0;
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}
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_resampler.Push(unresampledAudioFrame.data_,
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unresampledAudioFrame.samples_per_channel_,
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outBuffer,
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MAX_AUDIO_BUFFER_IN_SAMPLES,
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outLen);
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lengthInSamples = outLen;
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if(_scaling != 1.0)
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{
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for (int i = 0;i < outLen; i++)
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{
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outBuffer[i] = (int16_t)(outBuffer[i] * _scaling);
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}
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}
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_decodedLengthInMS += 10;
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return 0;
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}
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int32_t FilePlayerImpl::RegisterModuleFileCallback(FileCallback* callback)
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{
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return _fileModule.SetModuleFileCallback(callback);
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}
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int32_t FilePlayerImpl::SetAudioScaling(float scaleFactor)
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{
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if((scaleFactor >= 0)&&(scaleFactor <= 2.0))
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{
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_scaling = scaleFactor;
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return 0;
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}
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LOG(LS_WARNING) << "SetAudioScaling() non-allowed scale factor.";
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return -1;
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}
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int32_t FilePlayerImpl::StartPlayingFile(const char* fileName,
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bool loop,
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uint32_t startPosition,
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float volumeScaling,
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uint32_t notification,
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uint32_t stopPosition,
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const CodecInst* codecInst)
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{
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if (_fileFormat == kFileFormatPcm16kHzFile ||
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_fileFormat == kFileFormatPcm8kHzFile||
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_fileFormat == kFileFormatPcm32kHzFile )
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{
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CodecInst codecInstL16;
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strncpy(codecInstL16.plname,"L16",32);
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codecInstL16.pltype = 93;
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codecInstL16.channels = 1;
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if (_fileFormat == kFileFormatPcm8kHzFile)
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{
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codecInstL16.rate = 128000;
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codecInstL16.plfreq = 8000;
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codecInstL16.pacsize = 80;
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} else if(_fileFormat == kFileFormatPcm16kHzFile)
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{
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codecInstL16.rate = 256000;
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codecInstL16.plfreq = 16000;
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codecInstL16.pacsize = 160;
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}else if(_fileFormat == kFileFormatPcm32kHzFile)
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{
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codecInstL16.rate = 512000;
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codecInstL16.plfreq = 32000;
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codecInstL16.pacsize = 160;
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} else
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{
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LOG(LS_ERROR) << "StartPlayingFile() sample frequency not "
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<< "supported for PCM format.";
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return -1;
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}
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if (_fileModule.StartPlayingAudioFile(fileName, notification, loop,
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_fileFormat, &codecInstL16,
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startPosition,
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stopPosition) == -1)
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{
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LOG(LS_WARNING) << "StartPlayingFile() failed to initialize "
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<< "pcm file " << fileName;
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return -1;
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}
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SetAudioScaling(volumeScaling);
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}else if(_fileFormat == kFileFormatPreencodedFile)
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{
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if (_fileModule.StartPlayingAudioFile(fileName, notification, loop,
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_fileFormat, codecInst) == -1)
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{
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LOG(LS_WARNING) << "StartPlayingFile() failed to initialize "
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<< "pre-encoded file " << fileName;
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return -1;
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}
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} else
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{
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CodecInst* no_inst = NULL;
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if (_fileModule.StartPlayingAudioFile(fileName, notification, loop,
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_fileFormat, no_inst,
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startPosition,
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stopPosition) == -1)
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{
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LOG(LS_WARNING) << "StartPlayingFile() failed to initialize file "
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<< fileName;
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return -1;
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}
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SetAudioScaling(volumeScaling);
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}
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if (SetUpAudioDecoder() == -1)
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{
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StopPlayingFile();
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return -1;
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}
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return 0;
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}
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int32_t FilePlayerImpl::StartPlayingFile(InStream& sourceStream,
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uint32_t startPosition,
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float volumeScaling,
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uint32_t notification,
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uint32_t stopPosition,
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const CodecInst* codecInst)
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{
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if (_fileFormat == kFileFormatPcm16kHzFile ||
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_fileFormat == kFileFormatPcm32kHzFile ||
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_fileFormat == kFileFormatPcm8kHzFile)
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{
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CodecInst codecInstL16;
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strncpy(codecInstL16.plname,"L16",32);
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codecInstL16.pltype = 93;
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codecInstL16.channels = 1;
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if (_fileFormat == kFileFormatPcm8kHzFile)
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{
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codecInstL16.rate = 128000;
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codecInstL16.plfreq = 8000;
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codecInstL16.pacsize = 80;
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}else if (_fileFormat == kFileFormatPcm16kHzFile)
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{
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codecInstL16.rate = 256000;
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codecInstL16.plfreq = 16000;
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codecInstL16.pacsize = 160;
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}else if (_fileFormat == kFileFormatPcm32kHzFile)
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{
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codecInstL16.rate = 512000;
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codecInstL16.plfreq = 32000;
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codecInstL16.pacsize = 160;
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}else
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{
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LOG(LS_ERROR) << "StartPlayingFile() sample frequency not "
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<< "supported for PCM format.";
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return -1;
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}
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if (_fileModule.StartPlayingAudioStream(sourceStream, notification,
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_fileFormat, &codecInstL16,
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startPosition,
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stopPosition) == -1)
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{
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LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream "
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<< "playout.";
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return -1;
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}
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}else if(_fileFormat == kFileFormatPreencodedFile)
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{
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if (_fileModule.StartPlayingAudioStream(sourceStream, notification,
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_fileFormat, codecInst) == -1)
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{
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LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream "
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<< "playout.";
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return -1;
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}
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} else {
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CodecInst* no_inst = NULL;
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if (_fileModule.StartPlayingAudioStream(sourceStream, notification,
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_fileFormat, no_inst,
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startPosition,
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stopPosition) == -1)
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{
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LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream "
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<< "playout.";
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return -1;
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}
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}
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SetAudioScaling(volumeScaling);
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if (SetUpAudioDecoder() == -1)
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{
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StopPlayingFile();
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return -1;
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}
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return 0;
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}
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int32_t FilePlayerImpl::StopPlayingFile()
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{
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memset(&_codec, 0, sizeof(CodecInst));
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_numberOf10MsPerFrame = 0;
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_numberOf10MsInDecoder = 0;
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return _fileModule.StopPlaying();
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}
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bool FilePlayerImpl::IsPlayingFile() const
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{
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return _fileModule.IsPlaying();
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}
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int32_t FilePlayerImpl::GetPlayoutPosition(uint32_t& durationMs)
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{
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return _fileModule.PlayoutPositionMs(durationMs);
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}
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int32_t FilePlayerImpl::SetUpAudioDecoder()
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{
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if ((_fileModule.codec_info(_codec) == -1))
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{
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LOG(LS_WARNING) << "Failed to retrieve codec info of file data.";
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return -1;
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}
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if( STR_CASE_CMP(_codec.plname, "L16") != 0 &&
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_audioDecoder.SetDecodeCodec(_codec,AMRFileStorage) == -1)
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{
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LOG(LS_WARNING) << "SetUpAudioDecoder() codec " << _codec.plname
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<< " not supported.";
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return -1;
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}
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_numberOf10MsPerFrame = _codec.pacsize / (_codec.plfreq / 100);
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_numberOf10MsInDecoder = 0;
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return 0;
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}
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} // namespace webrtc
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