HwBuffers.h

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#pragma once
 
 
#include <QtCore/QString>
#include <QtCore/qglobal.h>
#include <gst/gst.h>
 
class QQuickWindow;
 
// HwVideoBufferContext/Path and telemetry are unconditional (CPU path uses them); GstHwVideoBuffer needs
// MultimediaPrivate so it's GPU-only.
#include "GstHwPathTelemetry.h"
#include "GstHwVideoBufferFactory.h"  // HwVideoBufferContext, HwVideoBufferPath, makeHwVideoBuffer
#if defined(QGC_HAS_ANY_GPU_PATH)
#include "GstHwVideoBuffer.h"
#endif
 
namespace HwBuffers {
 
void initializeOnce() noexcept;
 
struct HwBufferEnvConfig
{
    bool dmaBufCache = false;           // QGC_GST_DMABUF_CACHE        (default off)
    bool dmaBufSingleEglImage = true;   // QGC_GST_DMABUF_SINGLE_EGLIMAGE (default on)
    bool dmaBufNoMmapFence = false;     // QGC_GST_DMABUF_NO_MMAP_FENCE (default off)
    bool offerDmaDrmLinear = false;     // QGC_GST_OFFER_DMA_DRM_LINEAR (default off)
};
 
const HwBufferEnvConfig& hwBufferEnvConfig() noexcept;
 
GstBusSyncReply onBusSyncMessage(GstBus* bus, GstMessage* msg, gpointer userData) noexcept;
 
void dispatchBusMessage(GstMessage* msg) noexcept;
 
void onPipelineRestart() noexcept;
 
void resetCachedGpuResources() noexcept;
 
void connectMainWindow(QQuickWindow* window) noexcept;
 
#if defined(QGC_HAS_ANY_GPU_PATH)
HwVideoBufferContext makeAdapterContext(bool gpuEnabled) noexcept;
#endif
 
bool answerSinkBinContextQuery(GstQuery* query) noexcept;
 
struct PathStats
{
    QString line;
    quint64 totalDelivered = 0;
};
 
PathStats formatPathStats(bool reset) noexcept;
 
QString takeExtraPathStats() noexcept;
 
}  // namespace HwBuffers