54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MEDIA_FORMATS_WEBM_WEBM_WEBVTT_PARSER_H_
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#define MEDIA_FORMATS_WEBM_WEBM_WEBVTT_PARSER_H_
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#include <stdint.h>
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#include <string>
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#include "packager/base/macros.h"
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namespace edash_packager {
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namespace media {
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class WebMWebVTTParser {
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public:
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// Utility function to parse the WebVTT cue from a byte stream.
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static void Parse(const uint8_t* payload,
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int payload_size,
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std::string* id,
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std::string* settings,
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std::string* content);
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private:
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// The payload is the embedded WebVTT cue, stored in a WebM block.
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// The parser treats this as a UTF-8 byte stream.
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WebMWebVTTParser(const uint8_t* payload, int payload_size);
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// Parse the cue identifier, settings, and content from the stream.
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void Parse(std::string* id, std::string* settings, std::string* content);
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// Remove a byte from the stream, advancing the stream pointer.
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// Returns true if a character was returned; false means "end of stream".
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bool GetByte(uint8_t* byte);
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// Backup the stream pointer.
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void UngetByte();
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// Parse a line of text from the stream.
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void ParseLine(std::string* line);
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// Represents the portion of the stream that has not been consumed yet.
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const uint8_t* ptr_;
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const uint8_t* const ptr_end_;
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DISALLOW_COPY_AND_ASSIGN(WebMWebVTTParser);
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};
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} // namespace media
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} // namespace edash_packager
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#endif // MEDIA_FORMATS_WEBM_WEBM_WEBVTT_PARSER_H_
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