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 "api/video/video_codec_type.h" 21 #include "rtc_base/constructor_magic.h" 22 #include "rtc_base/system/file_wrapper.h" 23 #include "rtc_base/time_utils.h" 24 25 namespace webrtc { 26 27 class IvfFileWriter { 28 public: 29 // Takes ownership of the file, which will be closed either through 30 // Close or ~IvfFileWriter. If writing a frame would take the file above the 31 // |byte_limit| the file will be closed, the write (and all future writes) 32 // will fail. A |byte_limit| of 0 is equivalent to no limit. 33 static std::unique_ptr<IvfFileWriter> Wrap(FileWrapper file, 34 size_t byte_limit); 35 ~IvfFileWriter(); 36 37 bool WriteFrame(const EncodedImage& encoded_image, VideoCodecType codec_type); 38 bool Close(); 39 40 private: 41 explicit IvfFileWriter(FileWrapper file, size_t byte_limit); 42 43 bool WriteHeader(); 44 bool InitFromFirstFrame(const EncodedImage& encoded_image, 45 VideoCodecType codec_type); 46 bool WriteOneSpatialLayer(int64_t timestamp, 47 const uint8_t* data, 48 size_t size); 49 50 VideoCodecType codec_type_; 51 size_t bytes_written_; 52 size_t byte_limit_; 53 size_t num_frames_; 54 uint16_t width_; 55 uint16_t height_; 56 int64_t last_timestamp_; 57 bool using_capture_timestamps_; 58 rtc::TimestampWrapAroundHandler wrap_handler_; 59 FileWrapper file_; 60 61 RTC_DISALLOW_COPY_AND_ASSIGN(IvfFileWriter); 62 }; 63 64 } // namespace webrtc 65 66 #endif // MODULES_VIDEO_CODING_UTILITY_IVF_FILE_WRITER_H_ 67