From d34041569e71fc9bd772354e94dc9d16061072a5 Mon Sep 17 00:00:00 2001
From: arpi_esp <arpi_esp@b3059339-0415-0410-9bf9-f77b7e298cf2>
Date: Sat, 24 Feb 2001 20:28:24 +0000
Subject: Initial revision

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2 b3059339-0415-0410-9bf9-f77b7e298cf2
---
 libvo/mga_common.c | 220 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 220 insertions(+)
 create mode 100644 libvo/mga_common.c

(limited to 'libvo/mga_common.c')

diff --git a/libvo/mga_common.c b/libvo/mga_common.c
new file mode 100644
index 0000000000..6ff635d7e6
--- /dev/null
+++ b/libvo/mga_common.c
@@ -0,0 +1,220 @@
+
+// mga_vid drawing functions
+
+static void
+write_frame_g200(uint8_t *y,uint8_t *cr, uint8_t *cb)
+{
+	uint8_t *dest;
+	uint32_t bespitch,h,w;
+
+	dest = vid_data;
+	bespitch = (mga_vid_config.src_width + 31) & ~31;
+
+	for(h=0; h < mga_vid_config.src_height; h++)
+	{
+		memcpy(dest, y, mga_vid_config.src_width);
+		y += mga_vid_config.src_width;
+		dest += bespitch;
+	}
+
+	for(h=0; h < mga_vid_config.src_height/2; h++)
+	{
+		for(w=0; w < mga_vid_config.src_width/2; w++)
+		{
+			*dest++ = *cb++;
+			*dest++ = *cr++;
+		}
+		dest += bespitch - mga_vid_config.src_width;
+	}
+}
+
+static void
+write_frame_g400(uint8_t *y,uint8_t *cr, uint8_t *cb)
+{
+	uint8_t *dest;
+	uint32_t bespitch,h;
+
+	dest = vid_data;
+	bespitch = (mga_vid_config.src_width + 31) & ~31;
+
+	for(h=0; h < mga_vid_config.src_height; h++) 
+	{
+		memcpy(dest, y, mga_vid_config.src_width);
+		y += mga_vid_config.src_width;
+		dest += bespitch;
+	}
+
+	for(h=0; h < mga_vid_config.src_height/2; h++) 
+	{
+		memcpy(dest, cb, mga_vid_config.src_width/2);
+		cb += mga_vid_config.src_width/2;
+		dest += bespitch/2;
+	}
+
+	for(h=0; h < mga_vid_config.src_height/2; h++) 
+	{
+		memcpy(dest, cr, mga_vid_config.src_width/2);
+		cr += mga_vid_config.src_width/2;
+		dest += bespitch/2;
+	}
+}
+
+//static void
+//write_slice_g200(uint8_t *y,uint8_t *cr, uint8_t *cb,uint32_t slice_num)
+
+static void
+draw_slice_g200(uint8_t *image[], int stride[], int width,int height,int x,int y)
+{
+	uint8_t *src;
+	uint8_t *src2;
+	uint8_t *dest;
+	uint32_t bespitch,h,w;
+
+		bespitch = (mga_vid_config.src_width + 31) & ~31;
+
+		dest = vid_data + bespitch * y * x;
+        src = image[0];
+		for(h=0; h < height; h++) 
+		{
+			memcpy(dest, src, width);
+			src += stride[0];
+			dest += bespitch;
+		}
+
+        width/=2;height/=2;x/=2;y/=2;
+
+		dest = vid_data +  bespitch * mga_vid_config.src_height + 
+		bespitch * y + 2*x;
+        src = image[1];
+        src2 = image[2];
+	for(h=0; h < height; h++)
+	{
+		for(w=0; w < width; w++)
+		{
+			dest[2*w+0] = src[w];
+			dest[2*w+1] = src2[w];
+		}
+		dest += bespitch;
+        src += stride[1];
+        src2+= stride[2];
+	}
+}
+
+static void
+draw_slice_g400(uint8_t *image[], int stride[], int w,int h,int x,int y)
+{
+    uint8_t *src;
+    uint8_t *dest;
+    uint32_t bespitch,bespitch2;
+    int i;
+
+    bespitch = (mga_vid_config.src_width + 31) & ~31;
+    bespitch2 = bespitch/2;
+
+    dest = vid_data + bespitch * y + x;
+    src = image[0];
+    for(i=0;i<h;i++){
+        memcpy(dest,src,w);
+        src+=stride[0];
+        dest += bespitch;
+    }
+    
+    w/=2;h/=2;x/=2;y/=2;
+    
+    dest = vid_data + bespitch*mga_vid_config.src_height + bespitch2 * y + x;
+    src = image[1];
+    for(i=0;i<h;i++){
+        memcpy(dest,src,w);
+        src+=stride[1];
+        dest += bespitch2;
+    }
+
+    dest = vid_data + bespitch*mga_vid_config.src_height
+                    + bespitch*mga_vid_config.src_height / 4 
+                    + bespitch2 * y + x;
+    src = image[2];
+    for(i=0;i<h;i++){
+        memcpy(dest,src,w);
+        src+=stride[2];
+        dest += bespitch2;
+    }
+
+}
+
+static uint32_t
+draw_slice(uint8_t *src[], int stride[], int w,int h,int x,int y)
+{
+	if (mga_vid_config.card_type == MGA_G200)
+            draw_slice_g200(src,stride,w,h,x,y);
+	else
+            draw_slice_g400(src,stride,w,h,x,y);
+	return 0;
+}
+
+static void
+flip_page(void)
+{
+#if 0
+	ioctl(f,MGA_VID_FSEL,&next_frame);
+
+	if (next_frame) 
+		vid_data = frame1;
+	else
+		vid_data = frame0;
+
+	next_frame = 2 - next_frame; // switch between fields A1 and B1
+
+#endif
+}
+
+
+static void
+write_frame_yuy2(uint8_t *y)
+{
+	uint8_t *dest;
+	uint32_t bespitch,h;
+        int len=2*mga_vid_config.src_width;
+
+	dest = vid_data;
+	bespitch = (mga_vid_config.src_width + 31) & ~31;
+        
+//        y+=2*mga_vid_config.src_width*mga_vid_config.src_height;
+
+	for(h=0; h < mga_vid_config.src_height; h++) 
+	{
+//		y -= 2*mga_vid_config.src_width;
+		memcpy(dest, y, len);
+		y += len;
+		dest += 2*bespitch;
+	}
+}
+
+
+static uint32_t
+draw_frame(uint8_t *src[])
+{
+        if (mga_vid_config.format==MGA_VID_FORMAT_YUY2)
+                write_frame_yuy2(src[0]);
+        else
+	if (mga_vid_config.card_type == MGA_G200)
+		write_frame_g200(src[0], src[2], src[1]);
+	else
+		write_frame_g400(src[0], src[2], src[1]);
+
+	//flip_page();
+	return 0;
+}
+
+static uint32_t
+query_format(uint32_t format)
+{
+    switch(format){
+    case IMGFMT_YV12:
+    case IMGFMT_YUY2:
+//    case IMGFMT_RGB|24:
+//    case IMGFMT_BGR|24:
+        return 1;
+    }
+    return 0;
+}
+
-- 
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