blob: 8c982ab606e13f4e377206675eeaaeaee8becb60 [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <string>
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/memory/ref_counted.h"
#include "cobalt/media/base/audio_decoder_config.h"
#include "cobalt/media/base/byte_queue.h"
#include "cobalt/media/base/decoder_buffer.h"
#include "cobalt/media/base/media_export.h"
#include "cobalt/media/base/stream_parser.h"
#include "cobalt/media/base/video_decoder_config.h"
#include "starboard/types.h"
namespace cobalt {
namespace media {
class WebMClusterParser;
class MEDIA_EXPORT WebMStreamParser : public StreamParser {
explicit WebMStreamParser(DecoderBuffer::Allocator* buffer_allocator);
~WebMStreamParser() override;
// StreamParser implementation.
void Init(const InitCB& init_cb, const NewConfigCB& config_cb,
const NewBuffersCB& new_buffers_cb, bool ignore_text_tracks,
const EncryptedMediaInitDataCB& encrypted_media_init_data_cb,
const NewMediaSegmentCB& new_segment_cb,
const EndMediaSegmentCB& end_of_segment_cb,
const scoped_refptr<MediaLog>& media_log) override;
void Flush() override;
bool Parse(const uint8_t* buf, int size) override;
enum State { kWaitingForInit, kParsingHeaders, kParsingClusters, kError };
void ChangeState(State new_state);
// Parses WebM Header, Info, Tracks elements. It also skips other level 1
// elements that are not used right now. Once the Info & Tracks elements have
// been parsed, this method will transition the parser from PARSING_HEADERS to
// Returns < 0 if the parse fails.
// Returns 0 if more data is needed.
// Returning > 0 indicates success & the number of bytes parsed.
int ParseInfoAndTracks(const uint8_t* data, int size);
// Incrementally parses WebM cluster elements. This method also skips
// CUES elements if they are encountered since we currently don't use the
// data in these elements.
// Returns < 0 if the parse fails.
// Returns 0 if more data is needed.
// Returning > 0 indicates success & the number of bytes parsed.
int ParseCluster(const uint8_t* data, int size);
// Fire the encrypted event through the |encrypted_media_init_data_cb_|.
void OnEncryptedMediaInitData(const std::string& key_id);
DecoderBuffer::Allocator* buffer_allocator_;
State state_;
InitCB init_cb_;
NewConfigCB config_cb_;
NewBuffersCB new_buffers_cb_;
bool ignore_text_tracks_;
EncryptedMediaInitDataCB encrypted_media_init_data_cb_;
NewMediaSegmentCB new_segment_cb_;
EndMediaSegmentCB end_of_segment_cb_;
scoped_refptr<MediaLog> media_log_;
bool unknown_segment_size_;
std::unique_ptr<WebMClusterParser> cluster_parser_;
ByteQueue byte_queue_;
} // namespace media
} // namespace cobalt