--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/windx5/SDL_dx5yuv.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,302 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#endif
+
+/* This is the DirectDraw implementation of YUV video overlays */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "SDL_error.h"
+#include "SDL_video.h"
+#include "SDL_dx5yuv_c.h"
+#include "SDL_yuvfuncs.h"
+
+#define USE_DIRECTX_OVERLAY
+
+/* The functions used to manipulate software video overlays */
+static struct private_yuvhwfuncs dx5_yuvfuncs = {
+	DX5_LockYUVOverlay,
+	DX5_UnlockYUVOverlay,
+	DX5_DisplayYUVOverlay,
+	DX5_FreeYUVOverlay
+};
+
+struct private_yuvhwdata {
+	LPDIRECTDRAWSURFACE3 surface;
+
+	/* These are just so we don't have to allocate them separately */
+	Uint16 pitches[3];
+	Uint8 *planes[3];
+};
+
+
+static LPDIRECTDRAWSURFACE3 CreateYUVSurface(_THIS,
+                                         int width, int height, Uint32 format)
+{
+	HRESULT result;
+	LPDIRECTDRAWSURFACE  dd_surface1;
+	LPDIRECTDRAWSURFACE3 dd_surface3;
+	DDSURFACEDESC ddsd;
+
+	/* Set up the surface description */
+	memset(&ddsd, 0, sizeof(ddsd));
+	ddsd.dwSize = sizeof(ddsd);
+	ddsd.dwFlags = (DDSD_WIDTH|DDSD_HEIGHT|DDSD_CAPS|DDSD_PIXELFORMAT);
+	ddsd.dwWidth = width;
+	ddsd.dwHeight= height;
+#ifdef USE_DIRECTX_OVERLAY
+	ddsd.ddsCaps.dwCaps = (DDSCAPS_OVERLAY|DDSCAPS_VIDEOMEMORY);
+#else
+	ddsd.ddsCaps.dwCaps = (DDSCAPS_OFFSCREENPLAIN|DDSCAPS_VIDEOMEMORY);
+#endif
+	ddsd.ddpfPixelFormat.dwSize = sizeof(ddsd.ddpfPixelFormat);
+	ddsd.ddpfPixelFormat.dwFlags = DDPF_FOURCC;
+	ddsd.ddpfPixelFormat.dwFourCC = format;
+
+	/* Create the DirectDraw video surface */
+	result = IDirectDraw2_CreateSurface(ddraw2, &ddsd, &dd_surface1, NULL); 
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDraw2::CreateSurface", result);
+		return(NULL);
+	}
+	result = IDirectDrawSurface_QueryInterface(dd_surface1,
+			&IID_IDirectDrawSurface3, (LPVOID *)&dd_surface3);
+	IDirectDrawSurface_Release(dd_surface1);
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDrawSurface::QueryInterface", result);
+		return(NULL);
+	}
+
+	/* Make sure the surface format was set properly */
+	memset(&ddsd, 0, sizeof(ddsd));
+	ddsd.dwSize = sizeof(ddsd);
+	result = IDirectDrawSurface3_Lock(dd_surface3, NULL,
+					  &ddsd, DDLOCK_NOSYSLOCK, NULL);
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDrawSurface3::Lock", result);
+		IDirectDrawSurface_Release(dd_surface3);
+		return(NULL);
+	}
+	IDirectDrawSurface3_Unlock(dd_surface3, NULL);
+
+	if ( !(ddsd.ddpfPixelFormat.dwFlags & DDPF_FOURCC) ||
+	      (ddsd.ddpfPixelFormat.dwFourCC != format) ) {
+		SDL_SetError("DDraw didn't use requested FourCC format");
+		IDirectDrawSurface_Release(dd_surface3);
+		return(NULL);
+	}
+
+	/* We're ready to go! */
+	return(dd_surface3);
+}
+
+#ifdef DEBUG_YUV
+static char *PrintFOURCC(Uint32 code)
+{
+	static char buf[5];
+
+	buf[3] = code >> 24;
+	buf[2] = (code >> 16) & 0xFF;
+	buf[1] = (code >> 8) & 0xFF;
+	buf[0] = (code & 0xFF);
+	return(buf);
+}
+#endif
+
+SDL_Overlay *DX5_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
+{
+	SDL_Overlay *overlay;
+	struct private_yuvhwdata *hwdata;
+
+#ifdef DEBUG_YUV
+	DWORD numcodes;
+	DWORD *codes;
+
+	printf("FOURCC format requested: 0x%x\n", PrintFOURCC(format));
+	IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, NULL);
+	if ( numcodes ) {
+		DWORD i;
+		codes = malloc(numcodes*sizeof(*codes));
+		if ( codes ) {
+			IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
+			for ( i=0; i<numcodes; ++i ) {
+				fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
+			}
+			free(codes);
+		}
+	} else {
+		fprintf(stderr, "No FOURCC codes supported\n");
+	}
+#endif
+
+	/* Create the overlay structure */
+	overlay = (SDL_Overlay *)malloc(sizeof *overlay);
+	if ( overlay == NULL ) {
+		SDL_OutOfMemory();
+		return(NULL);
+	}
+	memset(overlay, 0, (sizeof *overlay));
+
+	/* Fill in the basic members */
+	overlay->format = format;
+	overlay->w = width;
+	overlay->h = height;
+
+	/* Set up the YUV surface function structure */
+	overlay->hwfuncs = &dx5_yuvfuncs;
+
+	/* Create the pixel data and lookup tables */
+	hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
+	overlay->hwdata = hwdata;
+	if ( hwdata == NULL ) {
+		SDL_OutOfMemory();
+		SDL_FreeYUVOverlay(overlay);
+		return(NULL);
+	}
+	hwdata->surface = CreateYUVSurface(this, width, height, format);
+	if ( hwdata->surface == NULL ) {
+		SDL_FreeYUVOverlay(overlay);
+		return(NULL);
+	}
+	overlay->hw_overlay = 1;
+
+	/* Set up the plane pointers */
+	overlay->pitches = hwdata->pitches;
+	overlay->pixels = hwdata->planes;
+	switch (format) {
+	    case SDL_YV12_OVERLAY:
+	    case SDL_IYUV_OVERLAY:
+		overlay->planes = 3;
+	    default:
+		overlay->planes = 1;
+		break;
+	}
+
+	/* We're all done.. */
+	return(overlay);
+}
+
+int DX5_LockYUVOverlay(_THIS, SDL_Overlay *overlay)
+{
+	HRESULT result;
+	LPDIRECTDRAWSURFACE3 surface;
+	DDSURFACEDESC ddsd;
+
+	surface = overlay->hwdata->surface;
+	memset(&ddsd, 0, sizeof(ddsd));
+	ddsd.dwSize = sizeof(ddsd);
+	result = IDirectDrawSurface3_Lock(surface, NULL,
+					  &ddsd, DDLOCK_NOSYSLOCK, NULL);
+	if ( result == DDERR_SURFACELOST ) {
+		result = IDirectDrawSurface3_Restore(surface);
+		result = IDirectDrawSurface3_Lock(surface, NULL, &ddsd, 
+					(DDLOCK_NOSYSLOCK|DDLOCK_WAIT), NULL);
+	}
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDrawSurface3::Lock", result);
+		return(-1);
+	}
+
+	/* Find the pitch and offset values for the overlay */
+#if defined(NONAMELESSUNION)
+	overlay->pitches[0] = (Uint16)ddsd.u1.lPitch;
+#else
+	overlay->pitches[0] = (Uint16)ddsd.lPitch;
+#endif
+	overlay->pixels[0] = (Uint8 *)ddsd.lpSurface;
+	switch (overlay->format) {
+	    case SDL_YV12_OVERLAY:
+	    case SDL_IYUV_OVERLAY:
+		/* Add the two extra planes */
+		overlay->pitches[1] = overlay->pitches[0] / 2;
+		overlay->pitches[2] = overlay->pitches[0] / 2;
+	        overlay->pixels[1] = overlay->pixels[0] +
+		                     overlay->pitches[0] * overlay->h;
+	        overlay->pixels[2] = overlay->pixels[1] +
+		                     overlay->pitches[1] * overlay->h / 2;
+	        break;
+	    default:
+		/* Only one plane, no worries */
+		break;
+	}
+	return(0);
+}
+
+void DX5_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay)
+{
+	LPDIRECTDRAWSURFACE3 surface;
+
+	surface = overlay->hwdata->surface;
+	IDirectDrawSurface3_Unlock(surface, NULL);
+}
+
+int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect)
+{
+	HRESULT result;
+	LPDIRECTDRAWSURFACE3 surface;
+	RECT src, dst;
+
+	surface = overlay->hwdata->surface;
+	src.top = 0;
+	src.bottom = overlay->h;
+	src.left = 0;
+	src.right = overlay->w;
+	dst.top = SDL_bounds.top+dstrect->y;
+	dst.left = SDL_bounds.left+dstrect->x;
+	dst.bottom = dst.top+dstrect->h;
+	dst.right = dst.left+dstrect->w;
+#ifdef USE_DIRECTX_OVERLAY
+	result = IDirectDrawSurface3_UpdateOverlay(surface, &src,
+				SDL_primary, &dst, DDOVER_SHOW, NULL);
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
+		return(-1);
+	}
+#else
+	result = IDirectDrawSurface3_Blt(SDL_primary, &dst, surface, &src,
+							DDBLT_WAIT, NULL);
+	if ( result != DD_OK ) {
+		SetDDerror("DirectDrawSurface3::Blt", result);
+		return(-1);
+	}
+#endif
+	return(0);
+}
+
+void DX5_FreeYUVOverlay(_THIS, SDL_Overlay *overlay)
+{
+	struct private_yuvhwdata *hwdata;
+
+	hwdata = overlay->hwdata;
+	if ( hwdata ) {
+		if ( hwdata->surface ) {
+			IDirectDrawSurface_Release(hwdata->surface);
+		}
+		free(hwdata);
+	}
+}
+