mirror of
https://github.com/f4exb/sdrangel.git
synced 2026-01-19 20:15:29 -05:00
83 lines
4.2 KiB
C++
83 lines
4.2 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2026 Edouard Griffiths, F4EXB. //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_ATVMOD_TSGENERATOR_H
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#define INCLUDE_ATVMOD_TSGENERATOR_H
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#include <vector>
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#include <cstdint>
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#include <string>
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#include <libavformat/version.h>
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#include "datvmodsettings.h"
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struct AVFrame;
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struct AVFormatContext;
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struct AVCodecContext;
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struct AVCodec;
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class TSGenerator
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{
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public:
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enum class CodecType {
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HEVC, // libx265
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H264, // libx264
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};
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TSGenerator();
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~TSGenerator() = default;
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void generate_still_image_ts(const char* image_path, int bitrate, bool overlay_timestamp, int duration_sec = 1);
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void set_service_provider(const std::string& provider) { service_provider = provider; }
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void set_service_name(const std::string& name) { service_name = name; }
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uint8_t *next_ts_packet();
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int get_buffer_size() const { return static_cast<int>(buffer_size); }
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void set_codec(DATVModSettings::DATVCodec codec) { m_codecType = codec; }
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private:
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std::vector<uint8_t> ts_buffer; // Complete TS packets (e.g., 10s worth)
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size_t buffer_size = 0;
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size_t write_pos = 0;
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std::string service_provider = "SDRangel";
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std::string service_name = "SDRangel_TV";
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bool m_generateImage = false;
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DATVModSettings::DATVCodec m_codecType = DATVModSettings::CodecHEVC;
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static const double rate_qpsk[11][4];
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static const double rate_8psk[6][4];
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static const double rate_16apsk[6][4];
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static const double rate_32apsk[5][4];
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static uint8_t continuity_counters[8192]; // One per PID (0-8191)
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AVFrame* load_image_to_yuv(const char* filename, int width, int height);
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AVFrame* load_image_to_yuv_with_opencv(const char* filename, int width, int height, bool overlay_timestamp = false);
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AVCodecContext* configure_hevc_context(const AVCodec* codec, int fps, int bitrate, int width, int height, int duration_sec);
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AVCodecContext* configure_h264_context(const AVCodec* codec, int fps, int bitrate, int width, int height, int duration_sec);
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int setup_ts_context(AVFormatContext** oc, AVCodecContext* codec_ctx);
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void encode_frame_to_ts(AVFormatContext* oc, AVCodecContext* codec_ctx, AVFrame* frame, int stream_idx = 0);
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std::pair<const AVCodec*, AVCodecContext*> create_codec_context(int fps, int bitrate, int width, int height, int duration_sec);
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#if LIBAVFORMAT_VERSION_INT < ((61 << 16) | (0 << 8) | 0)
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static int write_packet_cb(void* opaque, uint8_t* buf, int buf_size);
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#else
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static int write_packet_cb(void* opaque, const uint8_t* buf, int buf_size);
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#endif
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static int read_packet_cb(void* opaque, uint8_t* buf, int buf_size);
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static int64_t seek_cb(void* opaque, int64_t offset, int whence);
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static double get_dvbs2_rate(double symbol_rate, DATVModSettings::DATVModulation modulation, DATVModSettings::DATVCodeRate code_rate);
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static double calc_dvbs2_rate(double symbol_rate, double bits, double fec_num, double fec_den, double bch, double pilots);
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};
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#endif // INCLUDE_ATVMOD_TSGENERATOR_H
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