1e37a264f1
Just before the first byte of an element identifier is written the muxer calls IMkvWriter::ElementStartNotify to report the position of the element in the WebM stream. Change-Id: Iac40090587bd9496b05f41203aace00902f5606e
95 lines
1.8 KiB
C++
95 lines
1.8 KiB
C++
// Copyright (c) 2011 The WebM project authors. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the LICENSE file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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#include "mkvwriter.hpp"
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#ifdef _MSC_VER
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#include <share.h> // for _SH_DENYWR
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#endif
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#include <new>
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namespace mkvmuxer {
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MkvWriter::MkvWriter() : file_(NULL) {
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}
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MkvWriter::~MkvWriter() {
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Close();
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}
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int32 MkvWriter::Write(const void* buffer, uint32 length) {
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if (!file_)
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return -1;
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if (length == 0)
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return 0;
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if (buffer == NULL)
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return -1;
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const size_t bytes_written = fwrite(buffer, 1, length, file_);
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return (bytes_written == length) ? 0 : -1;
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}
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bool MkvWriter::Open(const char* filename) {
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if (filename == NULL)
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return false;
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if (file_)
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return false;
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#ifdef _MSC_VER
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file_ = _fsopen(filename, "wb", _SH_DENYWR);
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#else
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file_ = fopen(filename, "wb");
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#endif
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if (file_ == NULL)
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return false;
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return true;
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}
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void MkvWriter::Close() {
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if (file_) {
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fclose(file_);
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file_ = NULL;
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}
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}
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int64 MkvWriter::Position() const {
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if (!file_)
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return 0;
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#ifdef _MSC_VER
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return _ftelli64(file_);
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#else
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return ftell(file_);
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#endif
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}
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int32 MkvWriter::Position(int64 position) {
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if (!file_)
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return -1;
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#ifdef _MSC_VER
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return _fseeki64(file_, position, SEEK_SET);
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#else
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return fseek(file_, position, SEEK_SET);
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#endif
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}
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bool MkvWriter::Seekable() const {
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return true;
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}
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void MkvWriter::ElementStartNotify(uint64, int64) {
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}
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} // namespace mkvmuxer
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