87 lines
2.0 KiB
C++
87 lines
2.0 KiB
C++
// Copyright 2015 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "packager/media/formats/webm/mkv_writer.h"
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namespace edash_packager {
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namespace media {
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MkvWriter::MkvWriter() : position_(0) {}
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MkvWriter::~MkvWriter() {}
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Status MkvWriter::Open(const std::string& name) {
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DCHECK(!file_);
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file_.reset(File::Open(name.c_str(), "w"));
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if (!file_)
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return Status(error::FILE_FAILURE, "Unable to open file for writing.");
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// This may produce an error message; however there isn't a seekable method
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// on File.
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seekable_ = file_->Seek(0);
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position_ = 0;
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return Status::OK;
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}
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mkvmuxer::int32 MkvWriter::Write(const void* buf, mkvmuxer::uint32 len) {
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DCHECK(file_);
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const char* data = reinterpret_cast<const char*>(buf);
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int64_t total_bytes_written = 0;
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while (total_bytes_written < len) {
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const int64_t written =
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file_->Write(data + total_bytes_written, len - total_bytes_written);
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if (written < 0)
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return written;
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total_bytes_written += written;
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}
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DCHECK_EQ(total_bytes_written, len);
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position_ += len;
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return 0;
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}
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int64_t MkvWriter::WriteFromFile(File* source) {
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return WriteFromFile(source, kWholeFile);
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}
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int64_t MkvWriter::WriteFromFile(File* source, uint64_t max_copy) {
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DCHECK(file_);
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const int64_t size = File::CopyFile(source, file_.get(), max_copy);
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if (size < 0)
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return size;
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position_ += size;
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return size;
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}
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mkvmuxer::int64 MkvWriter::Position() const {
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return position_;
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}
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mkvmuxer::int32 MkvWriter::Position(mkvmuxer::int64 position) {
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DCHECK(file_);
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if (file_->Seek(position)) {
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position_ = position;
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return 0;
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} else {
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return -1;
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}
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}
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bool MkvWriter::Seekable() const {
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return seekable_;
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}
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void MkvWriter::ElementStartNotify(mkvmuxer::uint64 element_id,
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mkvmuxer::int64 position) {}
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} // namespace media
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} // namespace edash_packager
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