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Merge pull request #7 from OpenHD/consti-dev
Add X20 autodetection
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // | ||
| // Created by geier on 07/02/2020. | ||
| // | ||
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| #ifndef LIVEVIDEO10MS_KEYFRAMEFINDER_HPP | ||
| #define LIVEVIDEO10MS_KEYFRAMEFINDER_HPP | ||
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| #include <memory> | ||
| #include <vector> | ||
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| #include "NALU.hpp" | ||
| // #include <qdebug.h> | ||
| #include <array> | ||
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| // Takes a continuous stream of NALUs and save SPS / PPS data | ||
| // For later use | ||
| class CodecConfigFinder { | ||
| private: | ||
| std::unique_ptr<NALUBuffer> SPS = nullptr; | ||
| std::unique_ptr<NALUBuffer> PPS = nullptr; | ||
| // VPS are only used in H265 | ||
| std::unique_ptr<NALUBuffer> VPS = nullptr; | ||
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| public: | ||
| bool save_if_config(const NALU& nalu) { | ||
| if (nalu.getSize() <= 0) return false; | ||
| if (nalu.isSPS()) { | ||
| SPS = std::make_unique<NALUBuffer>(nalu); | ||
| // qDebug()<<"SPS found"; | ||
| // qDebug()<<nalu.get_sps_as_string().c_str(); | ||
| return true; | ||
| } else if (nalu.isPPS()) { | ||
| PPS = std::make_unique<NALUBuffer>(nalu); | ||
| // qDebug()<<"PPS found"; | ||
| return true; | ||
| } else if (nalu.IS_H265_PACKET && nalu.isVPS()) { | ||
| VPS = std::make_unique<NALUBuffer>(nalu); | ||
| // qDebug()<<"VPS found"; | ||
| return true; | ||
| } | ||
| // qDebug()<<"not a keyframe"<<(int)nalu.getDataWithoutPrefix()[0]; | ||
| return false; | ||
| } | ||
| // H264 needs sps and pps | ||
| // H265 needs sps,pps and vps | ||
| bool all_config_available(const bool IS_H265 = false) { | ||
| if (IS_H265) { | ||
| return SPS != nullptr && PPS != nullptr && VPS != nullptr; | ||
| } | ||
| return SPS != nullptr && PPS != nullptr; | ||
| } | ||
| std::shared_ptr<std::vector<uint8_t>> get_config_data( | ||
| const bool IS_H265 = false) { | ||
| assert(all_config_available(IS_H265)); | ||
| if (IS_H265) { | ||
| // Looks like avcodec wants the VPS before sps and pps | ||
| auto& sps = SPS->get_nal(); | ||
| auto& pps = PPS->get_nal(); | ||
| auto& vps = VPS->get_nal(); | ||
| const auto size = sps.getSize() + pps.getSize() + vps.getSize(); | ||
| auto ret = std::make_unique<std::vector<uint8_t>>(size); | ||
| std::memcpy(ret->data(), vps.getData(), vps.getSize()); | ||
| auto offset = vps.getSize(); | ||
| std::memcpy(ret->data() + offset, sps.getData(), sps.getSize()); | ||
| offset += sps.getSize(); | ||
| std::memcpy(ret->data() + offset, pps.getData(), pps.getSize()); | ||
| return ret; | ||
| } | ||
| auto& sps = SPS->get_nal(); | ||
| auto& pps = PPS->get_nal(); | ||
| const auto size = sps.getSize() + pps.getSize(); | ||
| auto ret = std::make_shared<std::vector<uint8_t>>(size); | ||
| std::memcpy(ret->data(), sps.getData(), sps.getSize()); | ||
| std::memcpy(ret->data() + sps.getSize(), pps.getData(), pps.getSize()); | ||
| return ret; | ||
| } | ||
| // returns false if the config data (SPS,PPS,optional VPS) has changed | ||
| // true otherwise | ||
| bool check_is_still_same_config_data(const NALU& nalu) { | ||
| assert(all_config_available(nalu.IS_H265_PACKET)); | ||
| if (nalu.isSPS()) { | ||
| return compare(nalu, SPS->get_nal()); | ||
| } else if (nalu.isPPS()) { | ||
| return compare(nalu, PPS->get_nal()); | ||
| } else if (nalu.IS_H265_PACKET && nalu.isVPS()) { | ||
| return compare(nalu, VPS->get_nal()); | ||
| } | ||
| return true; | ||
| } | ||
| static void appendNaluData(std::vector<uint8_t>& buff, const NALU& nalu) { | ||
| buff.insert(buff.begin(), nalu.getData(), nalu.getData() + nalu.getSize()); | ||
| } | ||
| void reset() { | ||
| SPS = nullptr; | ||
| PPS = nullptr; | ||
| VPS = nullptr; | ||
| } | ||
| const NALU& getCSD0() const { return SPS->get_nal(); } | ||
| const NALU& getCSD1() const { return PPS->get_nal(); } | ||
| const NALU& getVPS() const { return VPS->get_nal(); } | ||
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| public: | ||
| static bool compare(const NALU& n1, const NALU& n2) { | ||
| if (n1.getSize() != n2.getSize()) return false; | ||
| const int res = std::memcmp(n1.getData(), n2.getData(), n1.getSize()); | ||
| return res == 0; | ||
| } | ||
| }; | ||
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| #endif // LIVEVIDEO10MS_KEYFRAMEFINDER_HPP |
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