63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
#pragma once
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#include "VideoEncoderBase.h"
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#include "common/config.h"
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#include <string>
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#include <vector>
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// 合规守护：DISABLE_FFMPEG_FOR_TEST=1 时整类移出编译单元，避免 GPL 传染（与 c0a632a 对齐）
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#if defined(_WIN64) && !DISABLE_FFMPEG_FOR_TEST
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struct AVCodecContext;
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struct AVFrame;
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struct AVPacket;
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// FFmpeg 硬编 H.264 实现。
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// Step 1: 仅探测 h264_nvenc 单后端，足以验证 FFmpeg 静态库集成链路。
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// Step 2: 扩展 h264_qsv / h264_amf / h264_mf。
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//
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// 输入像素：BGRA (bpp=32) / RGB24 (bpp=24)，与 CX264Encoder 完全一致；
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// 内部转 NV12 喂给 FFmpeg encoder。
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class CFFmpegH264Encoder : public VideoEncoderBase
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{
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public:
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CFFmpegH264Encoder();
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~CFFmpegH264Encoder() override;
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bool open(const EncoderParams& params) override;
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void close() override;
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int encode(
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uint8_t* rgb,
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uint8_t bpp,
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uint32_t stride,
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uint32_t width,
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uint32_t height,
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uint8_t** lppData,
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uint32_t* lpSize,
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int direction = 1
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) override;
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void forceIDR() override { m_forceIDR = true; }
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void setBitrate(int kbps) override;
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VideoCodec codec() const override { return VideoCodec::H264; }
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const char* backendName() const override { return m_backend.c_str(); }
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private:
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bool tryOpenBackend(const char* name, const EncoderParams& p);
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void cleanupCodec();
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int convertRGB24ToNV12(uint8_t* rgb, uint32_t stride,
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uint32_t width, uint32_t height, int direction);
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AVCodecContext* m_ctx = nullptr;
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AVFrame* m_frame = nullptr;
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AVPacket* m_packet = nullptr;
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std::vector<uint8_t> m_outputBuffer; // encode 返回给调用方的缓冲（持有到下一次 encode）
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std::vector<uint8_t> m_i420Scratch; // RGB24 路径的中间缓冲
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int64_t m_pts = 0;
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bool m_forceIDR = false;
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std::string m_backend; // 实际选中的后端名（"h264_nvenc" / ...）
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};
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#endif // _WIN64 && !DISABLE_FFMPEG_FOR_TEST
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