OcBlitLib.h

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#ifndef OC_BLIT_LIB
#define OC_BLIT_LIB
 
#include <Protocol/GraphicsOutput.h>
#include <Library/BaseOverflowLib.h>
 
//
// Limit bytes per pixel to most common value for simplicity.
//
#define BYTES_PER_PIXEL  sizeof (EFI_GRAPHICS_OUTPUT_BLT_PIXEL)
STATIC_ASSERT (BYTES_PER_PIXEL == sizeof (UINT32), "Non 4-byte pixels are unsupported!");
 
//
// Read-only structure for the frame buffer configure.
//
typedef struct OC_BLIT_CONFIGURE {
  UINT32                       PixelsPerScanLine;
  UINT32                       Width;
  UINT32                       Height;
  UINT32                       RotatedWidth;
  UINT32                       RotatedHeight;
  UINT32                       Rotation;
  UINT8                        *FrameBuffer;
  EFI_GRAPHICS_PIXEL_FORMAT    PixelFormat;
  EFI_PIXEL_BITMASK            PixelMasks;
  INT8                         PixelShl[4];    // R-G-B-Rsvd
  INT8                         PixelShr[4];    // R-G-B-Rsvd
  BASE_ALIGNAS (64) UINT8            LineBuffer[];
} OC_BLIT_CONFIGURE;
 
RETURN_STATUS
EFIAPI
OcBlitConfigure (
  IN      VOID                                  *FrameBuffer,
  IN      EFI_GRAPHICS_OUTPUT_MODE_INFORMATION  *FrameBufferInfo,
  IN      UINT32                                Rotation,
  IN OUT  OC_BLIT_CONFIGURE                     *Configure,
  IN OUT  UINTN                                 *ConfigureSize
  );
 
RETURN_STATUS
EFIAPI
OcBlitRender (
  IN     OC_BLIT_CONFIGURE                  *Configure,
  IN OUT EFI_GRAPHICS_OUTPUT_BLT_PIXEL      *BltBuffer OPTIONAL,
  IN     EFI_GRAPHICS_OUTPUT_BLT_OPERATION  BltOperation,
  IN     UINTN                              SourceX,
  IN     UINTN                              SourceY,
  IN     UINTN                              DestinationX,
  IN     UINTN                              DestinationY,
  IN     UINTN                              Width,
  IN     UINTN                              Height,
  IN     UINTN                              Delta
  );
 
#endif // OC_BLIT_LIB