Add GetVideoInfo

From 023ae5b3ae14fd6acc9e2a3176259f134d09861a Mon Sep 17 00:00:00 2001
From: Michael Fellinger <m.fellinger@gmail.com>
Date: Wed, 26 May 2010 02:38:02 +0900
Subject: [PATCH] Add GetVideoInfo

---
 sdl/sdl.go |   39 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/sdl/sdl.go b/sdl/sdl.go
index 7222d3e..bd382cb 100644
--- a/sdl/sdl.go
+++ b/sdl/sdl.go
@@ -73,6 +73,45 @@ func VideoModeOK(width int, height int, bpp int, flags uint32) int {
 	return int(C.SDL_VideoModeOK(C.int(width), C.int(height), C.int(bpp), C.Uint32(flags)))
 }
 
+type RealVideoInfo struct {
+	HW_available bool         "Flag: Can you create hardware surfaces?"
+	WM_available bool         "Flag: Can you talk to a window manager?"
+	Blit_hw      bool         "Flag: Accelerated blits HW --> HW"
+	Blit_hw_CC   bool         "Flag: Accelerated blits with Colorkey"
+	Blit_hw_A    bool         "Flag: Accelerated blits with Alpha"
+	Blit_sw      bool         "Flag: Accelerated blits SW --> HW"
+	Blit_sw_CC   bool         "Flag: Accelerated blits with Colorkey"
+	Blit_sw_A    bool         "Flag: Accelerated blits with Alpha"
+	Blit_fill    bool         "Flag: Accelerated color fill"
+	Video_mem    uint32       "The total amount of video memory (in K)"
+	Vfmt         *PixelFormat "Value: The format of the video surface"
+	Current_w    int32        "Value: The current video mode width"
+	Current_h    int32        "Value: The current video mode height"
+}
+
+func GetVideoInfo() *RealVideoInfo {
+	vinfo := (*VideoInfo)(cast(C.SDL_GetVideoInfo()))
+
+	pad := vinfo.Pad0
+	pad0, pad1 := pad[0], pad[1]
+
+	return &RealVideoInfo{
+		HW_available: pad0&(1<<0) != 0,
+		WM_available: pad0&(1<<1) != 0,
+		Blit_hw:      pad1&(1<<1) != 0,
+		Blit_hw_CC:   pad1&(1<<2) != 0,
+		Blit_hw_A:    pad1&(1<<3) != 0,
+		Blit_sw:      pad1&(1<<4) != 0,
+		Blit_sw_CC:   pad1&(1<<5) != 0,
+		Blit_sw_A:    pad1&(1<<6) != 0,
+		Blit_fill:    pad1&(1<<7) != 0,
+		Video_mem:    vinfo.Video_mem,
+		Vfmt:         vinfo.Vfmt,
+		Current_w:    vinfo.Current_w,
+		Current_h:    vinfo.Current_h,
+	}
+}
+
 // Makes sure the given area is updated on the given screen.  If x, y, w, and
 // h are all 0, the whole screen will be updated.
 func (screen *Surface) UpdateRect(x int32, y int32, w uint32, h uint32) {
-- 
1.7.1