1 /* 2 * Copyright 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef FFMPEG_FFMPEGEXTRACTOR_H 18 #define FFMPEG_FFMPEGEXTRACTOR_H 19 20 21 extern "C" { 22 #include <libavformat/avformat.h> 23 #include <libswresample/swresample.h> 24 #include <libavutil/opt.h> 25 } 26 27 #include <cstdint> 28 #include <android/asset_manager.h> 29 #include <GameConstants.h> 30 31 class FFMpegExtractor { 32 public: 33 static int64_t decode(AAsset *asset, uint8_t *targetData, AudioProperties targetProperties); 34 35 private: 36 static bool createAVIOContext(AAsset *asset, uint8_t *buffer, uint32_t bufferSize, 37 AVIOContext **avioContext); 38 39 static bool createAVFormatContext(AVIOContext *avioContext, AVFormatContext **avFormatContext); 40 41 static bool openAVFormatContext(AVFormatContext *avFormatContext); 42 43 static int32_t cleanup(AVIOContext *avioContext, AVFormatContext *avFormatContext); 44 45 static bool getStreamInfo(AVFormatContext *avFormatContext); 46 47 static AVStream *getBestAudioStream(AVFormatContext *avFormatContext); 48 49 static AVCodec *findCodec(AVCodecID id); 50 51 static void printCodecParameters(AVCodecParameters *params); 52 }; 53 54 55 #endif //FFMPEG_FFMPEGEXTRACTOR_H 56