| /* |
| * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include "webrtc/voice_engine/file_player.h" |
| |
| #include "webrtc/common_audio/resampler/include/resampler.h" |
| #include "webrtc/common_types.h" |
| #include "webrtc/modules/media_file/media_file.h" |
| #include "webrtc/modules/media_file/media_file_defines.h" |
| #include "webrtc/rtc_base/logging.h" |
| #include "webrtc/typedefs.h" |
| #include "webrtc/voice_engine/coder.h" |
| |
| namespace webrtc { |
| |
| namespace { |
| |
| class FilePlayerImpl : public FilePlayer { |
| public: |
| FilePlayerImpl(uint32_t instanceID, FileFormats fileFormat); |
| ~FilePlayerImpl() override; |
| |
| int Get10msAudioFromFile(int16_t* outBuffer, |
| size_t* lengthInSamples, |
| int frequencyInHz) override; |
| int32_t RegisterModuleFileCallback(FileCallback* callback) override; |
| int32_t StartPlayingFile(const char* fileName, |
| bool loop, |
| uint32_t startPosition, |
| float volumeScaling, |
| uint32_t notification, |
| uint32_t stopPosition, |
| const CodecInst* codecInst) override; |
| int32_t StartPlayingFile(InStream* sourceStream, |
| uint32_t startPosition, |
| float volumeScaling, |
| uint32_t notification, |
| uint32_t stopPosition, |
| const CodecInst* codecInst) override; |
| int32_t StopPlayingFile() override; |
| bool IsPlayingFile() const override; |
| int32_t GetPlayoutPosition(uint32_t* durationMs) override; |
| int32_t AudioCodec(CodecInst* audioCodec) const override; |
| int32_t Frequency() const override; |
| int32_t SetAudioScaling(float scaleFactor) override; |
| |
| private: |
| int32_t SetUpAudioDecoder(); |
| |
| const FileFormats _fileFormat; |
| MediaFile& _fileModule; |
| |
| uint32_t _decodedLengthInMS; |
| |
| AudioCoder _audioDecoder; |
| |
| CodecInst _codec; |
| int32_t _numberOf10MsPerFrame; |
| int32_t _numberOf10MsInDecoder; |
| |
| Resampler _resampler; |
| float _scaling; |
| }; |
| |
| FilePlayerImpl::FilePlayerImpl(const uint32_t instanceID, |
| const FileFormats fileFormat) |
| : _fileFormat(fileFormat), |
| _fileModule(*MediaFile::CreateMediaFile(instanceID)), |
| _decodedLengthInMS(0), |
| _audioDecoder(instanceID), |
| _codec(), |
| _numberOf10MsPerFrame(0), |
| _numberOf10MsInDecoder(0), |
| _resampler(), |
| _scaling(1.0) { |
| _codec.plfreq = 0; |
| } |
| |
| FilePlayerImpl::~FilePlayerImpl() { |
| MediaFile::DestroyMediaFile(&_fileModule); |
| } |
| |
| int32_t FilePlayerImpl::Frequency() const { |
| if (_codec.plfreq == 0) { |
| return -1; |
| } |
| // Make sure that sample rate is 8,16 or 32 kHz. E.g. WAVE files may have |
| // other sampling rates. |
| if (_codec.plfreq == 11000) { |
| return 16000; |
| } else if (_codec.plfreq == 22000) { |
| return 32000; |
| } else if (_codec.plfreq == 44000) { |
| return 32000; |
| } else if (_codec.plfreq == 48000) { |
| return 32000; |
| } else { |
| return _codec.plfreq; |
| } |
| } |
| |
| int32_t FilePlayerImpl::AudioCodec(CodecInst* audioCodec) const { |
| *audioCodec = _codec; |
| return 0; |
| } |
| |
| int32_t FilePlayerImpl::Get10msAudioFromFile(int16_t* outBuffer, |
| size_t* lengthInSamples, |
| int frequencyInHz) { |
| if (_codec.plfreq == 0) { |
| LOG(LS_WARNING) << "Get10msAudioFromFile() playing not started!" |
| << " codec freq = " << _codec.plfreq |
| << ", wanted freq = " << frequencyInHz; |
| return -1; |
| } |
| |
| AudioFrame unresampledAudioFrame; |
| if (STR_CASE_CMP(_codec.plname, "L16") == 0) { |
| unresampledAudioFrame.sample_rate_hz_ = _codec.plfreq; |
| |
| // L16 is un-encoded data. Just pull 10 ms. |
| size_t lengthInBytes = AudioFrame::kMaxDataSizeBytes; |
| if (_fileModule.PlayoutAudioData( |
| reinterpret_cast<int8_t*>(unresampledAudioFrame.mutable_data()), |
| lengthInBytes) == -1) { |
| // End of file reached. |
| return -1; |
| } |
| if (lengthInBytes == 0) { |
| *lengthInSamples = 0; |
| return 0; |
| } |
| // One sample is two bytes. |
| unresampledAudioFrame.samples_per_channel_ = lengthInBytes >> 1; |
| |
| } else { |
| // Decode will generate 10 ms of audio data. PlayoutAudioData(..) |
| // expects a full frame. If the frame size is larger than 10 ms, |
| // PlayoutAudioData(..) data should be called proportionally less often. |
| int16_t encodedBuffer[MAX_AUDIO_BUFFER_IN_SAMPLES]; |
| size_t encodedLengthInBytes = 0; |
| if (++_numberOf10MsInDecoder >= _numberOf10MsPerFrame) { |
| _numberOf10MsInDecoder = 0; |
| size_t bytesFromFile = sizeof(encodedBuffer); |
| if (_fileModule.PlayoutAudioData(reinterpret_cast<int8_t*>(encodedBuffer), |
| bytesFromFile) == -1) { |
| // End of file reached. |
| return -1; |
| } |
| encodedLengthInBytes = bytesFromFile; |
| } |
| if (_audioDecoder.Decode(&unresampledAudioFrame, frequencyInHz, |
| reinterpret_cast<int8_t*>(encodedBuffer), |
| encodedLengthInBytes) == -1) { |
| return -1; |
| } |
| } |
| |
| size_t outLen = 0; |
| if (_resampler.ResetIfNeeded(unresampledAudioFrame.sample_rate_hz_, |
| frequencyInHz, 1)) { |
| LOG(LS_WARNING) << "Get10msAudioFromFile() unexpected codec."; |
| |
| // New sampling frequency. Update state. |
| outLen = static_cast<size_t>(frequencyInHz / 100); |
| memset(outBuffer, 0, outLen * sizeof(int16_t)); |
| return 0; |
| } |
| _resampler.Push(unresampledAudioFrame.data(), |
| unresampledAudioFrame.samples_per_channel_, outBuffer, |
| MAX_AUDIO_BUFFER_IN_SAMPLES, outLen); |
| |
| *lengthInSamples = outLen; |
| |
| if (_scaling != 1.0) { |
| for (size_t i = 0; i < outLen; i++) { |
| outBuffer[i] = (int16_t)(outBuffer[i] * _scaling); |
| } |
| } |
| _decodedLengthInMS += 10; |
| return 0; |
| } |
| |
| int32_t FilePlayerImpl::RegisterModuleFileCallback(FileCallback* callback) { |
| return _fileModule.SetModuleFileCallback(callback); |
| } |
| |
| int32_t FilePlayerImpl::SetAudioScaling(float scaleFactor) { |
| if ((scaleFactor >= 0) && (scaleFactor <= 2.0)) { |
| _scaling = scaleFactor; |
| return 0; |
| } |
| LOG(LS_WARNING) << "SetAudioScaling() non-allowed scale factor."; |
| return -1; |
| } |
| |
| int32_t FilePlayerImpl::StartPlayingFile(const char* fileName, |
| bool loop, |
| uint32_t startPosition, |
| float volumeScaling, |
| uint32_t notification, |
| uint32_t stopPosition, |
| const CodecInst* codecInst) { |
| if (_fileFormat == kFileFormatPcm16kHzFile || |
| _fileFormat == kFileFormatPcm8kHzFile || |
| _fileFormat == kFileFormatPcm32kHzFile) { |
| CodecInst codecInstL16; |
| strncpy(codecInstL16.plname, "L16", 32); |
| codecInstL16.pltype = 93; |
| codecInstL16.channels = 1; |
| |
| if (_fileFormat == kFileFormatPcm8kHzFile) { |
| codecInstL16.rate = 128000; |
| codecInstL16.plfreq = 8000; |
| codecInstL16.pacsize = 80; |
| |
| } else if (_fileFormat == kFileFormatPcm16kHzFile) { |
| codecInstL16.rate = 256000; |
| codecInstL16.plfreq = 16000; |
| codecInstL16.pacsize = 160; |
| |
| } else if (_fileFormat == kFileFormatPcm32kHzFile) { |
| codecInstL16.rate = 512000; |
| codecInstL16.plfreq = 32000; |
| codecInstL16.pacsize = 160; |
| } else { |
| LOG(LS_ERROR) << "StartPlayingFile() sample frequency not " |
| << "supported for PCM format."; |
| return -1; |
| } |
| |
| if (_fileModule.StartPlayingAudioFile(fileName, notification, loop, |
| _fileFormat, &codecInstL16, |
| startPosition, stopPosition) == -1) { |
| LOG(LS_WARNING) << "StartPlayingFile() failed to initialize " |
| << "pcm file " << fileName; |
| return -1; |
| } |
| SetAudioScaling(volumeScaling); |
| } else if (_fileFormat == kFileFormatPreencodedFile) { |
| if (_fileModule.StartPlayingAudioFile(fileName, notification, loop, |
| _fileFormat, codecInst) == -1) { |
| LOG(LS_WARNING) << "StartPlayingFile() failed to initialize " |
| << "pre-encoded file " << fileName; |
| return -1; |
| } |
| } else { |
| CodecInst* no_inst = NULL; |
| if (_fileModule.StartPlayingAudioFile(fileName, notification, loop, |
| _fileFormat, no_inst, startPosition, |
| stopPosition) == -1) { |
| LOG(LS_WARNING) << "StartPlayingFile() failed to initialize file " |
| << fileName; |
| return -1; |
| } |
| SetAudioScaling(volumeScaling); |
| } |
| if (SetUpAudioDecoder() == -1) { |
| StopPlayingFile(); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int32_t FilePlayerImpl::StartPlayingFile(InStream* sourceStream, |
| uint32_t startPosition, |
| float volumeScaling, |
| uint32_t notification, |
| uint32_t stopPosition, |
| const CodecInst* codecInst) { |
| if (_fileFormat == kFileFormatPcm16kHzFile || |
| _fileFormat == kFileFormatPcm32kHzFile || |
| _fileFormat == kFileFormatPcm8kHzFile) { |
| CodecInst codecInstL16; |
| strncpy(codecInstL16.plname, "L16", 32); |
| codecInstL16.pltype = 93; |
| codecInstL16.channels = 1; |
| |
| if (_fileFormat == kFileFormatPcm8kHzFile) { |
| codecInstL16.rate = 128000; |
| codecInstL16.plfreq = 8000; |
| codecInstL16.pacsize = 80; |
| |
| } else if (_fileFormat == kFileFormatPcm16kHzFile) { |
| codecInstL16.rate = 256000; |
| codecInstL16.plfreq = 16000; |
| codecInstL16.pacsize = 160; |
| |
| } else if (_fileFormat == kFileFormatPcm32kHzFile) { |
| codecInstL16.rate = 512000; |
| codecInstL16.plfreq = 32000; |
| codecInstL16.pacsize = 160; |
| } else { |
| LOG(LS_ERROR) << "StartPlayingFile() sample frequency not " |
| << "supported for PCM format."; |
| return -1; |
| } |
| if (_fileModule.StartPlayingAudioStream( |
| *sourceStream, notification, _fileFormat, &codecInstL16, |
| startPosition, stopPosition) == -1) { |
| LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream " |
| << "playout."; |
| return -1; |
| } |
| |
| } else if (_fileFormat == kFileFormatPreencodedFile) { |
| if (_fileModule.StartPlayingAudioStream(*sourceStream, notification, |
| _fileFormat, codecInst) == -1) { |
| LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream " |
| << "playout."; |
| return -1; |
| } |
| } else { |
| CodecInst* no_inst = NULL; |
| if (_fileModule.StartPlayingAudioStream(*sourceStream, notification, |
| _fileFormat, no_inst, startPosition, |
| stopPosition) == -1) { |
| LOG(LS_ERROR) << "StartPlayingFile() failed to initialize stream " |
| << "playout."; |
| return -1; |
| } |
| } |
| SetAudioScaling(volumeScaling); |
| |
| if (SetUpAudioDecoder() == -1) { |
| StopPlayingFile(); |
| return -1; |
| } |
| return 0; |
| } |
| |
| int32_t FilePlayerImpl::StopPlayingFile() { |
| memset(&_codec, 0, sizeof(CodecInst)); |
| _numberOf10MsPerFrame = 0; |
| _numberOf10MsInDecoder = 0; |
| return _fileModule.StopPlaying(); |
| } |
| |
| bool FilePlayerImpl::IsPlayingFile() const { |
| return _fileModule.IsPlaying(); |
| } |
| |
| int32_t FilePlayerImpl::GetPlayoutPosition(uint32_t* durationMs) { |
| return _fileModule.PlayoutPositionMs(*durationMs); |
| } |
| |
| int32_t FilePlayerImpl::SetUpAudioDecoder() { |
| if ((_fileModule.codec_info(_codec) == -1)) { |
| LOG(LS_WARNING) << "Failed to retrieve codec info of file data."; |
| return -1; |
| } |
| if (STR_CASE_CMP(_codec.plname, "L16") != 0 && |
| _audioDecoder.SetDecodeCodec(_codec) == -1) { |
| LOG(LS_WARNING) << "SetUpAudioDecoder() codec " << _codec.plname |
| << " not supported."; |
| return -1; |
| } |
| _numberOf10MsPerFrame = _codec.pacsize / (_codec.plfreq / 100); |
| _numberOf10MsInDecoder = 0; |
| return 0; |
| } |
| |
| } // namespace |
| |
| std::unique_ptr<FilePlayer> FilePlayer::CreateFilePlayer( |
| uint32_t instanceID, |
| FileFormats fileFormat) { |
| switch (fileFormat) { |
| case kFileFormatWavFile: |
| case kFileFormatCompressedFile: |
| case kFileFormatPreencodedFile: |
| case kFileFormatPcm16kHzFile: |
| case kFileFormatPcm8kHzFile: |
| case kFileFormatPcm32kHzFile: |
| // audio formats |
| return std::unique_ptr<FilePlayer>( |
| new FilePlayerImpl(instanceID, fileFormat)); |
| default: |
| assert(false); |
| return nullptr; |
| } |
| } |
| |
| } // namespace webrtc |
