pluggit

1 files changed, 170 insertions, 0 deletions

diff --git a/src/Scaler.cxx b/src/Scaler.cxx
new file mode 100644
index 0000000..9e9af3c
--- /dev/null
+++ b/src/Scaler.cxx
@@ -0,0 +1,170 @@
+namespace PluggIt {
+
+D_DEBUG_DOMAIN( PluggIt_Scaler, "PluggIt/Scaler", "PluggIt Scaler" );
+
+
+typedef struct {
+     DFBRegion   clip;
+     const void *colors;
+     unsigned long       protect;
+     unsigned long       key;
+} StretchCtx;
+
+typedef void (*StretchHVx)( void             *dst,
+                            int               dpitch,
+                            const void       *src,
+                            int               spitch,
+                            int               width,
+                            int               height,
+                            int               dst_width,
+                            int               dst_height,
+                            const StretchCtx *ctx );
+
+#define STRETCH_NONE           0
+#define STRETCH_SRCKEY         1
+#define STRETCH_PROTECT        2
+#define STRETCH_SRCKEY_PROTECT 3
+#define STRETCH_NUM            4
+
+#define PIXEL_RGB16(r,g,b)     ( (((r)&0xF8) << 8) | \
+                                 (((g)&0xFC) << 3) | \
+                                 (((b)&0xF8) >> 3) )
+
+/**********************************************************************************************************************/
+/*** 16 bit RGB 565 scalers *******************************************************************************************/
+/**********************************************************************************************************************/
+
+#define DST_FORMAT              DSPF_RGB16
+#define TABLE_NAME              stretch_hvx_RGB16
+#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_RGB16_ ## UPDOWN ## _ ## K ## P ## _ ## F
+#define SHIFT_R5                5
+#define SHIFT_R6                6
+#define X_F81F                  0xf81f
+#define X_07E0                  0x07e0
+#define MASK_RGB                0xffff
+
+#define FORMAT_RGB16
+#include "stretch_up_down_16.h"
+#undef FORMAT_RGB16
+
+#undef DST_FORMAT
+#undef TABLE_NAME
+#undef FUNC_NAME
+#undef SHIFT_R5
+#undef SHIFT_R6
+#undef X_F81F
+#undef X_07E0
+#undef MASK_RGB
+
+/**********************************************************************************************************************/
+/*** 32 bit RGB 8888 scalers ******************************************************************************************/
+/**********************************************************************************************************************/
+
+#define DST_FORMAT              DSPF_ARGB
+#define TABLE_NAME              stretch_hvx_ARGB
+#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_ARGB_ ## UPDOWN ## _ ## K ## P ## _ ## F
+#define SHIFT_R8                8
+#define SHIFT_L8                8
+#define X_00FF00FF              0x00ff00ff
+#define X_FF00FF00              0xff00ff00
+#define MASK_RGB                0x00ffffff
+
+#define FORMAT_ARGB
+#include "stretch_up_down_32.h"
+#undef FORMAT_ARGB
+
+#undef DST_FORMAT
+#undef TABLE_NAME
+#undef FUNC_NAME
+#undef SHIFT_R8
+#undef SHIFT_L8
+#undef X_00FF00FF
+#undef X_FF00FF00
+#undef MASK_RGB
+
+/**********************************************************************************************************************/
+/*** 32 bit RGB 8888 scalers ******************************************************************************************/
+/**********************************************************************************************************************/
+
+#define DST_FORMAT              DSPF_RGB32
+#define TABLE_NAME              stretch_hvx_RGB32
+#define FUNC_NAME(UPDOWN,K,P,F) stretch_hvx_RGB32_ ## UPDOWN ## _ ## K ## P ## _ ## F
+#define SHIFT_R8                8
+#define SHIFT_L8                8
+#define X_00FF00FF              0x00ff00ff
+#define X_FF00FF00              0x0000ff00
+#define MASK_RGB                0x00ffffff
+
+#define FORMAT_RGB32
+#include "stretch_up_down_32.h"
+#undef FORMAT_RGB32
+
+#undef DST_FORMAT
+#undef TABLE_NAME
+#undef FUNC_NAME
+#undef SHIFT_R8
+#undef SHIFT_L8
+#undef X_00FF00FF
+#undef X_FF00FF00
+#undef MASK_RGB
+
+
+class Scaler
+{
+
+     public Scaler() {
+     }
+
+     public void scale( DFBSurfacePixelFormat  format,
+                        void                  *dst,
+                        int                    dpitch,
+                        const void            *src,
+                        int                    spitch,
+                        int                    width,
+                        int                    height,
+                        int                    dst_width,
+                        int                    dst_height,
+                        const DFBRegion       &clip )
+     {
+          D_DEBUG_AT( PluggIt_Scaler, "%s( %s, %p [%d], %p [%d], %dx%d -> %dx%d, clip %4d,%4d-%4dx%4d )\n",
+                      __FUNCTION__, dfb_pixelformat_name( format ), dst, dpitch, src, spitch, width, height,
+                      dst_width, dst_height, DFB_RECTANGLE_VALS_FROM_REGION( &clip ) );
+
+
+          StretchCtx ctx;
+
+          ctx.clip = clip;
+
+          switch (format) {
+               case DSPF_RGB16:
+                    if (width <= dst_width || height <= dst_height)
+                         stretch_hvx_RGB16_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    else
+                         stretch_hvx_RGB16_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    break;
+
+               case DSPF_RGB32:
+                    if (width <= dst_width || height <= dst_height)
+                         stretch_hvx_RGB32_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    else
+                         stretch_hvx_RGB32_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    break;
+
+               case DSPF_ARGB:
+                    if (width <= dst_width || height <= dst_height)
+                         stretch_hvx_ARGB_up____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    else
+                         stretch_hvx_ARGB_down____DSPF_RGB32( dst, dpitch, src, spitch, width, height, dst_width, dst_height, &ctx );
+                    break;
+
+               default:
+                    D_UNIMPLEMENTED();
+                    break;
+          }
+     }
+};
+
+
+
+}
+