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https://github.com/hyperion-project/hyperion.ng.git
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Updated the snapshot creation based on the latest release of VideoCore (included backwards compatibility if correct)
Former-commit-id: 5bb8d6d7cd673ac8c08a2c9a8f1995231074d327
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@ -55,10 +55,10 @@ public slots:
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void stop();
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void stop();
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///
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///
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/// \brief Set the grabbing mode
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/// Set the grabbing mode
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/// \param mode The new grabbing mode
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/// @param[in] mode The new grabbing mode
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///
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///
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void setGrabbingMode(GrabbingMode mode);
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void setGrabbingMode(const GrabbingMode mode);
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private:
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private:
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/// The update rate [Hz]
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/// The update rate [Hz]
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@ -1,8 +1,13 @@
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#pragma once
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#pragma once
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/**
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* Enumeration of the possible modes in which frame-grabbing is performed.
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*/
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enum GrabbingMode
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enum GrabbingMode
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{
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{
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/** Frame grabbing is switched off */
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GRABBINGMODE_OFF,
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GRABBINGMODE_OFF,
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/** Frame grabbing during video */
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GRABBINGMODE_VIDEO,
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GRABBINGMODE_VIDEO,
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GRABBINGMODE_PHOTO,
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GRABBINGMODE_PHOTO,
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GRABBINGMODE_AUDIO,
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GRABBINGMODE_AUDIO,
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@ -1,9 +1,22 @@
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#include "DispmanxFrameGrabber.h"
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#include "DispmanxFrameGrabber.h"
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// Because the shapshot function is incompatible between versions (use of different enum as
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// third argument) and no proper version number is available as preprocessor define we cast the
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// function to the same function with the third argument as 'int'.
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// This way we can call the function in both versions of the VideoCore library without
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// switching.
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static int my_vc_dispmanx_snapshot(DISPMANX_DISPLAY_HANDLE_T display, DISPMANX_RESOURCE_HANDLE_T snapshot_resource, int transform)
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{
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typedef int (*SnapshotFunctionPtr)(DISPMANX_DISPLAY_HANDLE_T, DISPMANX_RESOURCE_HANDLE_T, int);
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SnapshotFunctionPtr snapshot = (SnapshotFunctionPtr) &vc_dispmanx_snapshot;
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return (*snapshot)(display, snapshot_resource, transform);
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}
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DispmanxFrameGrabber::DispmanxFrameGrabber(const unsigned width, const unsigned height) :
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DispmanxFrameGrabber::DispmanxFrameGrabber(const unsigned width, const unsigned height) :
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_vc_display(0),
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_vc_display(0),
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_vc_resource(0),
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_vc_resource(0),
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_vc_flags(0),
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_width(width),
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_width(width),
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_height(height)
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_height(height)
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{
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{
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@ -50,6 +63,11 @@ DispmanxFrameGrabber::~DispmanxFrameGrabber()
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bcm_host_deinit();
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bcm_host_deinit();
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}
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}
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void DispmanxFrameGrabber::setFlags(const int vc_flags)
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{
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_vc_flags = vc_flags;
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}
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void DispmanxFrameGrabber::grabFrame(RgbImage& image)
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void DispmanxFrameGrabber::grabFrame(RgbImage& image)
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{
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{
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// Sanity check of the given image size
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// Sanity check of the given image size
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@ -59,7 +77,7 @@ void DispmanxFrameGrabber::grabFrame(RgbImage& image)
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_vc_display = vc_dispmanx_display_open(0);
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_vc_display = vc_dispmanx_display_open(0);
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// Create the snapshot (incl down-scaling)
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// Create the snapshot (incl down-scaling)
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vc_dispmanx_snapshot(_vc_display, _vc_resource, VC_IMAGE_ROT0);
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my_vc_dispmanx_snapshot(_vc_display, _vc_resource, _vc_flags);
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// Read the snapshot into the memory
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// Read the snapshot into the memory
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void* image_ptr = image.memptr();
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void* image_ptr = image.memptr();
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@ -26,6 +26,13 @@ public:
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DispmanxFrameGrabber(const unsigned width, const unsigned height);
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DispmanxFrameGrabber(const unsigned width, const unsigned height);
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~DispmanxFrameGrabber();
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~DispmanxFrameGrabber();
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///
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/// Updates the frame-grab flags as used by the VC library for frame grabbing
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///
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/// @param vc_flags The snapshot grabbing mask
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///
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void setFlags(const int vc_flags);
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///
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///
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/// Captures a single snapshot of the display and writes the data to the given image. The
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/// Captures a single snapshot of the display and writes the data to the given image. The
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/// provided image should have the same dimensions as the configured values (_width and
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/// provided image should have the same dimensions as the configured values (_width and
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@ -46,8 +53,12 @@ private:
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/// Rectangle of the captured resource that is transfered to user space
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/// Rectangle of the captured resource that is transfered to user space
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VC_RECT_T _rectangle;
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VC_RECT_T _rectangle;
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/// Flags (transforms) for creating snapshots
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int _vc_flags;
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/// With of the captured snapshot [pixels]
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/// With of the captured snapshot [pixels]
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unsigned _width;
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unsigned _width;
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/// Height of the captured snapshot [pixels]
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/// Height of the captured snapshot [pixels]
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unsigned _height;
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unsigned _height;
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};
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};
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@ -61,10 +61,23 @@ void DispmanxWrapper::stop()
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_timer.stop();
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_timer.stop();
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}
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}
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void DispmanxWrapper::setGrabbingMode(GrabbingMode mode)
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void DispmanxWrapper::setGrabbingMode(const GrabbingMode mode)
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{
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{
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if (mode == GRABBINGMODE_VIDEO)
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switch (mode)
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{
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case GRABBINGMODE_VIDEO:
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_frameGrabber->setFlags(DISPMANX_SNAPSHOT_NO_RGB|DISPMANX_SNAPSHOT_FILL);
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start();
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start();
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else
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case GRABBINGMODE_AUDIO:
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case GRABBINGMODE_PHOTO:
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case GRABBINGMODE_MENU:
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_frameGrabber->setFlags(0);
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start();
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break;
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case GRABBINGMODE_OFF:
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stop();
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stop();
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break;
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case GRABBINGMODE_INVALID:
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break;
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}
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}
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}
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