60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Copyright 2020 Google LLC. 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/webvtt/webvtt_muxer.h>
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#include <packager/file.h>
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#include <packager/file/file_closer.h>
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#include <packager/macros/status.h>
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#include <packager/media/formats/webvtt/webvtt_utils.h>
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namespace shaka {
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namespace media {
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namespace webvtt {
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WebVttMuxer::WebVttMuxer(const MuxerOptions& options) : TextMuxer(options) {}
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WebVttMuxer::~WebVttMuxer() {}
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Status WebVttMuxer::InitializeStream(TextStreamInfo* stream) {
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stream->set_codec(kCodecWebVtt);
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stream->set_codec_string("wvtt");
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const std::string preamble = WebVttGetPreamble(*stream);
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buffer_.reset(new WebVttFileBuffer(
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options().transport_stream_timestamp_offset_ms, preamble));
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return Status::OK;
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}
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Status WebVttMuxer::AddTextSampleInternal(const TextSample& sample) {
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if (sample.id().find('\n') != std::string::npos) {
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return Status(error::MUXER_FAILURE, "Text id cannot contain newlines");
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}
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buffer_->Append(sample);
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return Status::OK;
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}
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Status WebVttMuxer::WriteToFile(const std::string& filename, uint64_t* size) {
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// Write everything to the file before telling the manifest so that the
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// file will exist on disk.
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std::unique_ptr<File, FileCloser> file(File::Open(filename.c_str(), "w"));
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if (!file) {
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return Status(error::FILE_FAILURE, "Failed to open " + filename);
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}
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buffer_->WriteTo(file.get(), size);
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buffer_->Reset();
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if (!file.release()->Close()) {
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return Status(error::FILE_FAILURE, "Failed to close " + filename);
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}
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return Status::OK;
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}
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} // namespace webvtt
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} // namespace media
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} // namespace shaka
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