| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * 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. |
| */ |
| |
| #ifndef COBALT_AUDIO_AUDIO_FILE_READER_WAV_H_ |
| #define COBALT_AUDIO_AUDIO_FILE_READER_WAV_H_ |
| |
| #include "cobalt/audio/audio_file_reader.h" |
| #include "cobalt/audio/audio_helpers.h" |
| |
| namespace cobalt { |
| namespace audio { |
| |
| // WAVE Audio File Format Specifications: |
| // http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/WAVE.html |
| class AudioFileReaderWAV : public AudioFileReader { |
| public: |
| static scoped_ptr<AudioFileReader> TryCreate(const uint8* data, size_t size, |
| SampleType sample_type); |
| |
| scoped_array<uint8> sample_data() OVERRIDE { return sample_data_.Pass(); } |
| float sample_rate() const OVERRIDE { return sample_rate_; } |
| int32 number_of_frames() const OVERRIDE { return number_of_frames_; } |
| int32 number_of_channels() const OVERRIDE { return number_of_channels_; } |
| SampleType sample_type() const OVERRIDE { return sample_type_; } |
| |
| private: |
| AudioFileReaderWAV(const uint8* data, size_t size, SampleType sample_type); |
| |
| bool ParseRIFFHeader(const uint8* data, size_t size); |
| void ParseChunks(const uint8* data, size_t size); |
| bool ParseWAV_fmt(const uint8* data, size_t offset, size_t size, |
| bool* is_sample_in_float); |
| bool ParseWAV_data(const uint8* data, size_t offset, size_t size, |
| bool is_sample_in_float); |
| |
| bool is_valid() { return sample_data_ != NULL; } |
| |
| scoped_array<uint8> sample_data_; |
| float sample_rate_; |
| int32 number_of_frames_; |
| int32 number_of_channels_; |
| SampleType sample_type_; |
| }; |
| |
| } // namespace audio |
| } // namespace cobalt |
| |
| #endif // COBALT_AUDIO_AUDIO_FILE_READER_WAV_H_ |