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Diffstat (limited to 'webrtc/modules/media_file/source/media_file_utility.h')
| -rw-r--r-- | webrtc/modules/media_file/source/media_file_utility.h | 284 |
1 files changed, 0 insertions, 284 deletions
diff --git a/webrtc/modules/media_file/source/media_file_utility.h b/webrtc/modules/media_file/source/media_file_utility.h deleted file mode 100644 index 2823ceca8a..0000000000 --- a/webrtc/modules/media_file/source/media_file_utility.h +++ /dev/null @@ -1,284 +0,0 @@ -/* - * 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. - */ - -// Note: the class cannot be used for reading and writing at the same time. -#ifndef WEBRTC_MODULES_MEDIA_FILE_SOURCE_MEDIA_FILE_UTILITY_H_ -#define WEBRTC_MODULES_MEDIA_FILE_SOURCE_MEDIA_FILE_UTILITY_H_ - -#include <stdio.h> - -#include "webrtc/common_types.h" -#include "webrtc/modules/media_file/interface/media_file_defines.h" - -namespace webrtc { -class InStream; -class OutStream; - -class ModuleFileUtility -{ -public: - - ModuleFileUtility(const int32_t id); - ~ModuleFileUtility(); - - // Prepare for playing audio from stream. - // startPointMs and stopPointMs, unless zero, specify what part of the file - // should be read. From startPointMs ms to stopPointMs ms. - int32_t InitWavReading(InStream& stream, - const uint32_t startPointMs = 0, - const uint32_t stopPointMs = 0); - - // Put 10-60ms of audio data from stream into the audioBuffer depending on - // codec frame size. dataLengthInBytes indicates the size of audioBuffer. - // The return value is the number of bytes written to audioBuffer. - // Note: This API only play mono audio but can be used on file containing - // audio with more channels (in which case the audio will be converted to - // mono). - int32_t ReadWavDataAsMono(InStream& stream, int8_t* audioBuffer, - const size_t dataLengthInBytes); - - // Put 10-60ms, depending on codec frame size, of audio data from file into - // audioBufferLeft and audioBufferRight. The buffers contain the left and - // right channel of played out stereo audio. - // dataLengthInBytes indicates the size of both audioBufferLeft and - // audioBufferRight. - // The return value is the number of bytes read for each buffer. - // Note: This API can only be successfully called for WAV files with stereo - // audio. - int32_t ReadWavDataAsStereo(InStream& wav, - int8_t* audioBufferLeft, - int8_t* audioBufferRight, - const size_t bufferLength); - - // Prepare for recording audio to stream. - // codecInst specifies the encoding of the audio data. - // Note: codecInst.channels should be set to 2 for stereo (and 1 for - // mono). Stereo is only supported for WAV files. - int32_t InitWavWriting(OutStream& stream, const CodecInst& codecInst); - - // Write one audio frame, i.e. the bufferLength first bytes of audioBuffer, - // to file. The audio frame size is determined by the codecInst.pacsize - // parameter of the last sucessfull StartRecordingAudioFile(..) call. - // The return value is the number of bytes written to audioBuffer. - int32_t WriteWavData(OutStream& stream, - const int8_t* audioBuffer, - const size_t bufferLength); - - // Finalizes the WAV header so that it is correct if nothing more will be - // written to stream. - // Note: this API must be called before closing stream to ensure that the - // WAVE header is updated with the file size. Don't call this API - // if more samples are to be written to stream. - int32_t UpdateWavHeader(OutStream& stream); - - // Prepare for playing audio from stream. - // startPointMs and stopPointMs, unless zero, specify what part of the file - // should be read. From startPointMs ms to stopPointMs ms. - // freqInHz is the PCM sampling frequency. - // NOTE, allowed frequencies are 8000, 16000 and 32000 (Hz) - int32_t InitPCMReading(InStream& stream, - const uint32_t startPointMs = 0, - const uint32_t stopPointMs = 0, - const uint32_t freqInHz = 16000); - - // Put 10-60ms of audio data from stream into the audioBuffer depending on - // codec frame size. dataLengthInBytes indicates the size of audioBuffer. - // The return value is the number of bytes written to audioBuffer. - int32_t ReadPCMData(InStream& stream, int8_t* audioBuffer, - const size_t dataLengthInBytes); - - // Prepare for recording audio to stream. - // freqInHz is the PCM sampling frequency. - // NOTE, allowed frequencies are 8000, 16000 and 32000 (Hz) - int32_t InitPCMWriting(OutStream& stream, const uint32_t freqInHz = 16000); - - // Write one 10ms audio frame, i.e. the bufferLength first bytes of - // audioBuffer, to file. The audio frame size is determined by the freqInHz - // parameter of the last sucessfull InitPCMWriting(..) call. - // The return value is the number of bytes written to audioBuffer. - int32_t WritePCMData(OutStream& stream, - const int8_t* audioBuffer, - size_t bufferLength); - - // Prepare for playing audio from stream. - // startPointMs and stopPointMs, unless zero, specify what part of the file - // should be read. From startPointMs ms to stopPointMs ms. - int32_t InitCompressedReading(InStream& stream, - const uint32_t startPointMs = 0, - const uint32_t stopPointMs = 0); - - // Put 10-60ms of audio data from stream into the audioBuffer depending on - // codec frame size. dataLengthInBytes indicates the size of audioBuffer. - // The return value is the number of bytes written to audioBuffer. - int32_t ReadCompressedData(InStream& stream, - int8_t* audioBuffer, - const size_t dataLengthInBytes); - - // Prepare for recording audio to stream. - // codecInst specifies the encoding of the audio data. - int32_t InitCompressedWriting(OutStream& stream, - const CodecInst& codecInst); - - // Write one audio frame, i.e. the bufferLength first bytes of audioBuffer, - // to file. The audio frame size is determined by the codecInst.pacsize - // parameter of the last sucessfull InitCompressedWriting(..) call. - // The return value is the number of bytes written to stream. - // Note: bufferLength must be exactly one frame. - int32_t WriteCompressedData(OutStream& stream, - const int8_t* audioBuffer, - const size_t bufferLength); - - // Prepare for playing audio from stream. - // codecInst specifies the encoding of the audio data. - int32_t InitPreEncodedReading(InStream& stream, - const CodecInst& codecInst); - - // Put 10-60ms of audio data from stream into the audioBuffer depending on - // codec frame size. dataLengthInBytes indicates the size of audioBuffer. - // The return value is the number of bytes written to audioBuffer. - int32_t ReadPreEncodedData(InStream& stream, - int8_t* audioBuffer, - const size_t dataLengthInBytes); - - // Prepare for recording audio to stream. - // codecInst specifies the encoding of the audio data. - int32_t InitPreEncodedWriting(OutStream& stream, - const CodecInst& codecInst); - - // Write one audio frame, i.e. the bufferLength first bytes of audioBuffer, - // to stream. The audio frame size is determined by the codecInst.pacsize - // parameter of the last sucessfull InitPreEncodedWriting(..) call. - // The return value is the number of bytes written to stream. - // Note: bufferLength must be exactly one frame. - int32_t WritePreEncodedData(OutStream& stream, - const int8_t* inData, - const size_t dataLengthInBytes); - - // Set durationMs to the size of the file (in ms) specified by fileName. - // freqInHz specifies the sampling frequency of the file. - int32_t FileDurationMs(const char* fileName, - const FileFormats fileFormat, - const uint32_t freqInHz = 16000); - - // Return the number of ms that have been played so far. - uint32_t PlayoutPositionMs(); - - // Update codecInst according to the current audio codec being used for - // reading or writing. - int32_t codec_info(CodecInst& codecInst); - -private: - // Biggest WAV frame supported is 10 ms at 48kHz of 2 channel, 16 bit audio. - enum{WAV_MAX_BUFFER_SIZE = 480*2*2}; - - - int32_t InitWavCodec(uint32_t samplesPerSec, - uint32_t channels, - uint32_t bitsPerSample, - uint32_t formatTag); - - // Parse the WAV header in stream. - int32_t ReadWavHeader(InStream& stream); - - // Update the WAV header. freqInHz, bytesPerSample, channels, format, - // lengthInBytes specify characterists of the audio data. - // freqInHz is the sampling frequency. bytesPerSample is the sample size in - // bytes. channels is the number of channels, e.g. 1 is mono and 2 is - // stereo. format is the encode format (e.g. PCMU, PCMA, PCM etc). - // lengthInBytes is the number of bytes the audio samples are using up. - int32_t WriteWavHeader(OutStream& stream, - const uint32_t freqInHz, - const uint32_t bytesPerSample, - const uint32_t channels, - const uint32_t format, - const uint32_t lengthInBytes); - - // Put dataLengthInBytes of audio data from stream into the audioBuffer. - // The return value is the number of bytes written to audioBuffer. - int32_t ReadWavData(InStream& stream, uint8_t* audioBuffer, - const uint32_t dataLengthInBytes); - - // Update the current audio codec being used for reading or writing - // according to codecInst. - int32_t set_codec_info(const CodecInst& codecInst); - - struct WAVE_FMTINFO_header - { - int16_t formatTag; - int16_t nChannels; - int32_t nSamplesPerSec; - int32_t nAvgBytesPerSec; - int16_t nBlockAlign; - int16_t nBitsPerSample; - }; - // Identifiers for preencoded files. - enum MediaFileUtility_CodecType - { - kCodecNoCodec = 0, - kCodecIsac, - kCodecIsacSwb, - kCodecIsacLc, - kCodecL16_8Khz, - kCodecL16_16kHz, - kCodecL16_32Khz, - kCodecPcmu, - kCodecPcma, - kCodecIlbc20Ms, - kCodecIlbc30Ms, - kCodecG722, - kCodecG722_1_32Kbps, - kCodecG722_1_24Kbps, - kCodecG722_1_16Kbps, - kCodecG722_1c_48, - kCodecG722_1c_32, - kCodecG722_1c_24, - kCodecAmr, - kCodecAmrWb, - kCodecG729, - kCodecG729_1, - kCodecG726_40, - kCodecG726_32, - kCodecG726_24, - kCodecG726_16, - kCodecSpeex8Khz, - kCodecSpeex16Khz - }; - - // TODO (hellner): why store multiple formats. Just store either codec_info_ - // or _wavFormatObj and supply conversion functions. - WAVE_FMTINFO_header _wavFormatObj; - int32_t _dataSize; // Chunk size if reading a WAV file - // Number of bytes to read. I.e. frame size in bytes. May be multiple - // chunks if reading WAV. - int32_t _readSizeBytes; - - int32_t _id; - - uint32_t _stopPointInMs; - uint32_t _startPointInMs; - uint32_t _playoutPositionMs; - size_t _bytesWritten; - - CodecInst codec_info_; - MediaFileUtility_CodecType _codecId; - - // The amount of bytes, on average, used for one audio sample. - int32_t _bytesPerSample; - int32_t _readPos; - - // Only reading or writing can be enabled, not both. - bool _reading; - bool _writing; - - // Scratch buffer used for turning stereo audio to mono. - uint8_t _tempData[WAV_MAX_BUFFER_SIZE]; -}; -} // namespace webrtc -#endif // WEBRTC_MODULES_MEDIA_FILE_SOURCE_MEDIA_FILE_UTILITY_H_ |