82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
|
// Copyright 2020 Google Inc. All rights reserved.
|
||
|
|
//
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE file or at
|
||
|
|
// https://developers.google.com/open-source/licenses/bsd
|
||
|
|
|
||
|
|
#ifndef PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_TELETEXT_H_
|
||
|
|
#define PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_TELETEXT_H_
|
||
|
|
|
||
|
|
#include <cstdint>
|
||
|
|
#include <string>
|
||
|
|
#include <unordered_map>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
#include <packager/media/formats/mp2t/es_parser.h>
|
||
|
|
|
||
|
|
namespace shaka {
|
||
|
|
namespace media {
|
||
|
|
namespace mp2t {
|
||
|
|
|
||
|
|
class EsParserTeletext : public EsParser {
|
||
|
|
public:
|
||
|
|
EsParserTeletext(const uint32_t pid,
|
||
|
|
const NewStreamInfoCB& new_stream_info_cb,
|
||
|
|
const EmitTextSampleCB& emit_sample_cb,
|
||
|
|
const uint8_t* descriptor,
|
||
|
|
const size_t descriptor_length);
|
||
|
|
|
||
|
|
EsParserTeletext(const EsParserTeletext&) = delete;
|
||
|
|
EsParserTeletext& operator=(const EsParserTeletext&) = delete;
|
||
|
|
|
||
|
|
bool Parse(const uint8_t* buf, int size, int64_t pts, int64_t dts) override;
|
||
|
|
bool Flush() override;
|
||
|
|
void Reset() override;
|
||
|
|
|
||
|
|
private:
|
||
|
|
using RowColReplacementMap =
|
||
|
|
std::unordered_map<uint8_t, std::unordered_map<uint8_t, std::string>>;
|
||
|
|
|
||
|
|
struct TextBlock {
|
||
|
|
std::vector<std::string> lines;
|
||
|
|
RowColReplacementMap packet_26_replacements;
|
||
|
|
int64_t pts;
|
||
|
|
};
|
||
|
|
|
||
|
|
bool ParseInternal(const uint8_t* data, const size_t size, const int64_t pts);
|
||
|
|
bool ParseDataBlock(const int64_t pts,
|
||
|
|
const uint8_t* data_block,
|
||
|
|
const uint8_t packet_nr,
|
||
|
|
const uint8_t magazine,
|
||
|
|
std::string& display_text);
|
||
|
|
void UpdateCharset();
|
||
|
|
void SendPending(const uint16_t index, const int64_t pts);
|
||
|
|
std::string BuildText(const uint8_t* data_block, const uint8_t row) const;
|
||
|
|
void ParsePacket26(const uint8_t* data_block);
|
||
|
|
void UpdateNationalSubset(const uint8_t national_subset[13][3]);
|
||
|
|
|
||
|
|
static void SetPacket26ReplacementString(
|
||
|
|
RowColReplacementMap& replacement_map,
|
||
|
|
const uint8_t row,
|
||
|
|
const uint8_t column,
|
||
|
|
std::string&& replacement_string);
|
||
|
|
|
||
|
|
NewStreamInfoCB new_stream_info_cb_;
|
||
|
|
EmitTextSampleCB emit_sample_cb_;
|
||
|
|
|
||
|
|
std::unordered_map<uint16_t, std::string> languages_;
|
||
|
|
bool sent_info_ = false;
|
||
|
|
uint8_t magazine_;
|
||
|
|
uint8_t page_number_;
|
||
|
|
std::unordered_map<uint16_t, TextBlock> page_state_;
|
||
|
|
uint8_t charset_code_;
|
||
|
|
char current_charset_[96][3];
|
||
|
|
int64_t last_pts_;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace mp2t
|
||
|
|
} // namespace media
|
||
|
|
} // namespace shaka
|
||
|
|
|
||
|
|
#endif // PACKAGER_MEDIA_FORMATS_MP2T_ES_PARSER_TELETEXT_H_
|