1 /* 2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_VIDEO_CODING_UTILITY_IVF_FILE_WRITER_H_ 12 #define MODULES_VIDEO_CODING_UTILITY_IVF_FILE_WRITER_H_ 13 14 #include <stddef.h> 15 #include <stdint.h> 16 17 #include <memory> 18 19 #include "api/video/encoded_image.h" 20 #include "rtc_base/constructor_magic.h" 21 #include "rtc_base/system/file_wrapper.h" 22 #include "rtc_base/time_utils.h" 23 24 namespace webrtc { 25 26 class IvfFileWriter { 27 public: 28 // Takes ownership of the file, which will be closed either through 29 // Close or ~IvfFileWriter. If writing a frame would take the file above the 30 // |byte_limit| the file will be closed, the write (and all future writes) 31 // will fail. A |byte_limit| of 0 is equivalent to no limit. 32 static std::unique_ptr<IvfFileWriter> Wrap(FileWrapper file, 33 size_t byte_limit); 34 ~IvfFileWriter(); 35 36 bool WriteFrame(const EncodedImage& encoded_image, VideoCodecType codec_type); 37 bool Close(); 38 39 private: 40 explicit IvfFileWriter(FileWrapper file, size_t byte_limit); 41 42 bool WriteHeader(); 43 bool InitFromFirstFrame(const EncodedImage& encoded_image, 44 VideoCodecType codec_type); 45 bool WriteOneSpatialLayer(int64_t timestamp, 46 const uint8_t* data, 47 size_t size); 48 49 VideoCodecType codec_type_; 50 size_t bytes_written_; 51 size_t byte_limit_; 52 size_t num_frames_; 53 uint16_t width_; 54 uint16_t height_; 55 int64_t last_timestamp_; 56 bool using_capture_timestamps_; 57 rtc::TimestampWrapAroundHandler wrap_handler_; 58 FileWrapper file_; 59 60 RTC_DISALLOW_COPY_AND_ASSIGN(IvfFileWriter); 61 }; 62 63 } // namespace webrtc 64 65 #endif // MODULES_VIDEO_CODING_UTILITY_IVF_FILE_WRITER_H_ 66