SDL_dx5yuv.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* This is the DirectDraw implementation of YUV video overlays */
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#include "SDL_video.h"
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#include "SDL_dx5yuv_c.h"
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#include "../SDL_yuvfuncs.h"
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//#define USE_DIRECTX_OVERLAY
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/* 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 */
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SDL_memset(&ddsd, 0, sizeof(ddsd));
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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 */
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SDL_memset(&ddsd, 0, sizeof(ddsd));
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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;
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codes = SDL_malloc(numcodes*sizeof(*codes));
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if ( codes ) {
IDirectDraw2_GetFourCCCodes(ddraw2, &numcodes, codes);
for ( i=0; i<numcodes; ++i ) {
fprintf(stderr, "Code %d: 0x%x\n", i, PrintFOURCC(codes[i]));
}
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SDL_free(codes);
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}
} else {
fprintf(stderr, "No FOURCC codes supported\n");
}
#endif
/* Create the overlay structure */
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overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
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if ( overlay == NULL ) {
SDL_OutOfMemory();
return(NULL);
}
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SDL_memset(overlay, 0, (sizeof *overlay));
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/* 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 */
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hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata);
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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;
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break;
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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;
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SDL_memset(&ddsd, 0, sizeof(ddsd));
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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);
}
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int DX5_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
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{
HRESULT result;
LPDIRECTDRAWSURFACE3 surface;
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RECT srcrect, dstrect;
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surface = overlay->hwdata->surface;
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srcrect.top = src->y;
srcrect.bottom = srcrect.top+src->h;
srcrect.left = src->x;
srcrect.right = srcrect.left+src->w;
dstrect.top = SDL_bounds.top+dst->y;
dstrect.left = SDL_bounds.left+dst->x;
dstrect.bottom = dstrect.top+dst->h;
dstrect.right = dstrect.left+dst->w;
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#ifdef USE_DIRECTX_OVERLAY
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result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect,
SDL_primary, &dstrect, DDOVER_SHOW, NULL);
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if ( result != DD_OK ) {
SetDDerror("DirectDrawSurface3::UpdateOverlay", result);
return(-1);
}
#else
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result = IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect,
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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);
}
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SDL_free(hwdata);
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overlay->hwdata = NULL;
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}
}