| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2006 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 BeOS version of SDL YUV video overlays */ |
| |
| #include "SDL_video.h" |
| #include "SDL_sysyuv.h" |
| #include "../SDL_yuvfuncs.h" |
| |
| extern "C" { |
| |
| /* The functions used to manipulate software video overlays */ |
| static struct private_yuvhwfuncs be_yuvfuncs = |
| { |
| BE_LockYUVOverlay, |
| BE_UnlockYUVOverlay, |
| BE_DisplayYUVOverlay, |
| BE_FreeYUVOverlay |
| }; |
| |
| BBitmap * BE_GetOverlayBitmap(BRect bounds, color_space cs) { |
| BBitmap *bbitmap; |
| bbitmap = new BBitmap(bounds,B_BITMAP_WILL_OVERLAY,cs); |
| if (!bbitmap || bbitmap->InitCheck() != B_OK) { |
| delete bbitmap; |
| return 0; |
| } |
| overlay_restrictions r; |
| bbitmap->GetOverlayRestrictions(&r); |
| uint32 width = bounds.IntegerWidth() + 1; |
| uint32 height = bounds.IntegerHeight() + 1; |
| uint32 width_padding = 0; |
| uint32 height_padding = 0; |
| if ((r.source.horizontal_alignment != 0) || |
| (r.source.vertical_alignment != 0)) { |
| delete bbitmap; |
| return 0; |
| } |
| if (r.source.width_alignment != 0) { |
| uint32 aligned_width = r.source.width_alignment + 1; |
| if (width % aligned_width > 0) { |
| width_padding = aligned_width - width % aligned_width; |
| } |
| } |
| if (r.source.height_alignment != 0) { |
| uint32 aligned_height = r.source.height_alignment + 1; |
| if (height % aligned_height > 0) { |
| fprintf(stderr,"GetOverlayBitmap failed height alignment\n"); |
| fprintf(stderr,"- height = %lu, aligned_height = %lu\n",height,aligned_height); |
| delete bbitmap; |
| return 0; |
| } |
| } |
| if ((r.source.min_width > width) || |
| (r.source.min_height > height) || |
| (r.source.max_width < width) || |
| (r.source.max_height < height)) { |
| fprintf(stderr,"GetOverlayBitmap failed bounds tests\n"); |
| delete bbitmap; |
| return 0; |
| } |
| if ((width_padding != 0) || (height_padding != 0)) { |
| delete bbitmap; |
| bounds.Set(bounds.left,bounds.top,bounds.right+width_padding,bounds.bottom+height_padding); |
| bbitmap = new BBitmap(bounds,B_BITMAP_WILL_OVERLAY,cs); |
| if (!bbitmap || bbitmap->InitCheck() != B_OK) { |
| fprintf(stderr,"GetOverlayBitmap failed late\n"); |
| delete bbitmap; |
| return 0; |
| } |
| } |
| return bbitmap; |
| } |
| |
| // See <GraphicsDefs.h> [btw: Cb=U, Cr=V] |
| // See also http://www.fourcc.org/indexyuv.htm |
| enum color_space convert_color_space(Uint32 format) { |
| switch (format) { |
| case SDL_YV12_OVERLAY: |
| return B_YUV9; |
| case SDL_IYUV_OVERLAY: |
| return B_YUV12; |
| case SDL_YUY2_OVERLAY: |
| return B_YCbCr422; |
| case SDL_UYVY_OVERLAY: |
| return B_YUV422; |
| case SDL_YVYU_OVERLAY: // not supported on beos? |
| return B_NO_COLOR_SPACE; |
| default: |
| return B_NO_COLOR_SPACE; |
| } |
| } |
| |
| // See SDL_video.h |
| int count_planes(Uint32 format) { |
| switch (format) { |
| case SDL_YV12_OVERLAY: |
| case SDL_IYUV_OVERLAY: |
| return 3; |
| case SDL_YUY2_OVERLAY: |
| case SDL_UYVY_OVERLAY: |
| case SDL_YVYU_OVERLAY: |
| return 1; |
| default: |
| return 0; |
| } |
| } |
| |
| SDL_Overlay *BE_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) { |
| SDL_Overlay* overlay; |
| struct private_yuvhwdata* hwdata; |
| BBitmap *bbitmap; |
| int planes; |
| BRect bounds; |
| color_space cs; |
| |
| /* find the appropriate BeOS colorspace descriptor */ |
| cs = convert_color_space(format); |
| if (cs == B_NO_COLOR_SPACE) |
| { |
| return NULL; |
| } |
| |
| /* count planes */ |
| planes = count_planes(format); |
| if (planes == 0) |
| { |
| return NULL; |
| } |
| /* TODO: figure out planar modes, if anyone cares */ |
| if (planes == 3) |
| { |
| return NULL; |
| } |
| |
| /* Create the overlay structure */ |
| overlay = (SDL_Overlay*)SDL_calloc(1, sizeof(SDL_Overlay)); |
| |
| if (overlay == NULL) |
| { |
| SDL_OutOfMemory(); |
| return NULL; |
| } |
| |
| /* Fill in the basic members */ |
| overlay->format = format; |
| overlay->w = width; |
| overlay->h = height; |
| overlay->hwdata = NULL; |
| |
| /* Set up the YUV surface function structure */ |
| overlay->hwfuncs = &be_yuvfuncs; |
| |
| /* Create the pixel data and lookup tables */ |
| hwdata = (struct private_yuvhwdata*)SDL_calloc(1, sizeof(struct private_yuvhwdata)); |
| |
| if (hwdata == NULL) |
| { |
| SDL_OutOfMemory(); |
| SDL_FreeYUVOverlay(overlay); |
| return NULL; |
| } |
| |
| overlay->hwdata = hwdata; |
| overlay->hwdata->display = display; |
| overlay->hwdata->bview = NULL; |
| overlay->hwdata->bbitmap = NULL; |
| overlay->hwdata->locked = 0; |
| |
| /* Create the BBitmap framebuffer */ |
| bounds.top = 0; bounds.left = 0; |
| bounds.right = width-1; |
| bounds.bottom = height-1; |
| |
| BView * bview = new BView(bounds,"overlay",B_FOLLOW_NONE,B_WILL_DRAW); |
| if (!bview) { |
| SDL_OutOfMemory(); |
| SDL_FreeYUVOverlay(overlay); |
| return NULL; |
| } |
| overlay->hwdata->bview = bview; |
| overlay->hwdata->first_display = true; |
| bview->Hide(); |
| |
| bbitmap = BE_GetOverlayBitmap(bounds,cs); |
| if (!bbitmap) { |
| overlay->hwdata->bbitmap = NULL; |
| SDL_FreeYUVOverlay(overlay); |
| return NULL; |
| } |
| overlay->hwdata->bbitmap = bbitmap; |
| |
| overlay->planes = planes; |
| overlay->pitches = (Uint16*)SDL_calloc(overlay->planes, sizeof(Uint16)); |
| overlay->pixels = (Uint8**)SDL_calloc(overlay->planes, sizeof(Uint8*)); |
| if (!overlay->pitches || !overlay->pixels) |
| { |
| SDL_OutOfMemory(); |
| SDL_FreeYUVOverlay(overlay); |
| return(NULL); |
| } |
| |
| overlay->pitches[0] = bbitmap->BytesPerRow(); |
| overlay->pixels[0] = (Uint8 *)bbitmap->Bits(); |
| overlay->hw_overlay = 1; |
| |
| if (SDL_Win->LockWithTimeout(1000000) != B_OK) { |
| SDL_FreeYUVOverlay(overlay); |
| return(NULL); |
| } |
| BView * view = SDL_Win->View(); |
| view->AddChild(bview); |
| rgb_color key; |
| bview->SetViewOverlay(bbitmap,bounds,bview->Bounds(),&key,B_FOLLOW_ALL, |
| B_OVERLAY_FILTER_HORIZONTAL|B_OVERLAY_FILTER_VERTICAL); |
| bview->SetViewColor(key); |
| bview->Flush(); |
| SDL_Win->Unlock(); |
| |
| current_overlay=overlay; |
| |
| return overlay; |
| } |
| |
| int BE_LockYUVOverlay(_THIS, SDL_Overlay* overlay) |
| { |
| if (overlay == NULL) |
| { |
| return 0; |
| } |
| |
| overlay->hwdata->locked = 1; |
| return 0; |
| } |
| |
| void BE_UnlockYUVOverlay(_THIS, SDL_Overlay* overlay) |
| { |
| if (overlay == NULL) |
| { |
| return; |
| } |
| |
| overlay->hwdata->locked = 0; |
| } |
| |
| int BE_DisplayYUVOverlay(_THIS, SDL_Overlay* overlay, SDL_Rect* src, SDL_Rect *dst) |
| { |
| if ((overlay == NULL) || (overlay->hwdata==NULL) |
| || (overlay->hwdata->bview==NULL) || (SDL_Win->View() == NULL)) |
| { |
| return -1; |
| } |
| if (SDL_Win->LockWithTimeout(50000) != B_OK) { |
| return 0; |
| } |
| BView * bview = overlay->hwdata->bview; |
| if (SDL_Win->IsFullScreen()) { |
| int left,top; |
| SDL_Win->GetXYOffset(left,top); |
| bview->MoveTo(left+dst->x,top+dst->y); |
| } else { |
| bview->MoveTo(dst->x,dst->y); |
| } |
| bview->ResizeTo(dst->w,dst->h); |
| bview->Flush(); |
| if (overlay->hwdata->first_display) { |
| bview->Show(); |
| overlay->hwdata->first_display = false; |
| } |
| SDL_Win->Unlock(); |
| |
| return 0; |
| } |
| |
| void BE_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) |
| { |
| if (overlay == NULL) |
| { |
| return; |
| } |
| |
| if (overlay->hwdata == NULL) |
| { |
| return; |
| } |
| |
| current_overlay=NULL; |
| |
| delete overlay->hwdata->bbitmap; |
| |
| SDL_free(overlay->hwdata); |
| } |
| |
| }; // extern "C" |