GstHwVideoBufferFactory.h

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#pragma once
 
#include <QtCore/qglobal.h>
#include <QtMultimedia/QVideoFrameFormat>
#include <gst/gst.h>
#include <gst/video/video-info.h>
#include <memory>
 
class QHwVideoBuffer;
 
#if defined(QGC_HAS_GST_DMABUF_GPU_PATH) || defined(QGC_HAS_GST_AHARDWAREBUFFER_GPU_PATH)
#include <EGL/egl.h>
#endif
 
enum class HwVideoBufferPath
{
    None,
    DmaBuf,
    GlMemory,
    D3D11,
    D3D12,
    IOSurface,
    AHardwareBuffer,
    Vulkan,
};
 
struct HwResolvedPathCache
{
    HwVideoBufferPath path = HwVideoBufferPath::None;
    bool validated = false;        // path resolved by a prior validated sample this epoch
    bool demotionRecorded = false; // one-shot guard for recordStreamDemotion() per epoch
};
 
struct HwVideoBufferContext
{
    bool gpuEnabled = false;
#if defined(QGC_HAS_GST_DMABUF_GPU_PATH)
    EGLDisplay dmaBufEglDisplay = EGL_NO_DISPLAY;
#endif
#if defined(QGC_HAS_GST_AHARDWAREBUFFER_GPU_PATH)
    EGLDisplay ahbEglDisplay = EGL_NO_DISPLAY;
#endif
};
 
std::unique_ptr<QHwVideoBuffer> makeHwVideoBuffer(GstSample* sample, const GstVideoInfo& info, QVideoFrameFormat format,
                                                  const HwVideoBufferContext& context, HwVideoBufferPath& matchedPath,
                                                  HwResolvedPathCache* cache = nullptr);