| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 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 |
| Lesser General Public License for more details. |
| |
| 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 |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| /* This is the DirectDraw implementation of YUV video overlays */ |
| #include "directx.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 */ |
| SDL_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 */ |
| SDL_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 = SDL_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])); |
| } |
| SDL_free(codes); |
| } |
| } else { |
| fprintf(stderr, "No FOURCC codes supported\n"); |
| } |
| #endif |
| |
| /* Create the overlay structure */ |
| overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay); |
| if ( overlay == NULL ) { |
| SDL_OutOfMemory(); |
| return(NULL); |
| } |
| SDL_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 *)SDL_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; |
| break; |
| 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; |
| SDL_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 *src, SDL_Rect *dst) |
| { |
| HRESULT result; |
| LPDIRECTDRAWSURFACE3 surface; |
| RECT srcrect, dstrect; |
| |
| surface = overlay->hwdata->surface; |
| 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; |
| #ifdef USE_DIRECTX_OVERLAY |
| result = IDirectDrawSurface3_UpdateOverlay(surface, &srcrect, |
| SDL_primary, &dstrect, DDOVER_SHOW, NULL); |
| if ( result != DD_OK ) { |
| SetDDerror("DirectDrawSurface3::UpdateOverlay", result); |
| return(-1); |
| } |
| #else |
| result = IDirectDrawSurface3_Blt(SDL_primary, &dstrect, surface, &srcrect, |
| 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); |
| } |
| SDL_free(hwdata); |
| overlay->hwdata = NULL; |
| } |
| } |
| |