ref: 8647792975b68797fc98d0e1bca20380e06e22e5
dir: /third_party/libwebm/mkvwriter.cpp/
// Copyright (c) 2012 The WebM 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. #include "mkvwriter.hpp" #ifdef _MSC_VER #include <share.h> // for _SH_DENYWR #endif #include <new> namespace mkvmuxer { MkvWriter::MkvWriter() : file_(NULL), writer_owns_file_(true) {} MkvWriter::MkvWriter(FILE* fp) : file_(fp), writer_owns_file_(false) {} MkvWriter::~MkvWriter() { Close(); } int32 MkvWriter::Write(const void* buffer, uint32 length) { if (!file_) return -1; if (length == 0) return 0; if (buffer == NULL) return -1; const size_t bytes_written = fwrite(buffer, 1, length, file_); return (bytes_written == length) ? 0 : -1; } bool MkvWriter::Open(const char* filename) { if (filename == NULL) return false; if (file_) return false; #ifdef _MSC_VER file_ = _fsopen(filename, "wb", _SH_DENYWR); #else file_ = fopen(filename, "wb"); #endif if (file_ == NULL) return false; return true; } void MkvWriter::Close() { if (file_ && writer_owns_file_) { fclose(file_); } file_ = NULL; } int64 MkvWriter::Position() const { if (!file_) return 0; #ifdef _MSC_VER return _ftelli64(file_); #else return ftell(file_); #endif } int32 MkvWriter::Position(int64 position) { if (!file_) return -1; #ifdef _MSC_VER return _fseeki64(file_, position, SEEK_SET); #else return fseek(file_, position, SEEK_SET); #endif } bool MkvWriter::Seekable() const { return true; } void MkvWriter::ElementStartNotify(uint64, int64) {} } // namespace mkvmuxer