SDL_ph_image.c
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/*
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
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slouken@libsdl.org
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*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
#include <stdlib.h>
#include <Ph.h>
#include <photon/Pg.h>
#include "SDL_error.h"
#include "SDL_endian.h"
#include "SDL_ph_image_c.h"
//printf("%s:%s:%d\n", __FILE__, __PRETTY_FUNCTION__, __LINE__ );
/* Various screen update functions available */
//static void ph_NormalUpdate(_THIS, int numrects, SDL_Rect *rects);
//static void ph_DummyUpdate(_THIS, int numrects, SDL_Rect *rects);
int ph_SetupImage(_THIS, SDL_Surface *screen)
{
int type = 0;
/* Determine image type */
switch(screen->format->BitsPerPixel)
{
case 8:{
type = Pg_IMAGE_PALETTE_BYTE;
}
break;
case 15:{
type = Pg_IMAGE_DIRECT_555;
}
break;
case 16:{
type = Pg_IMAGE_DIRECT_565;
}
break;
case 24:{
type = Pg_IMAGE_DIRECT_888;
}
break;
case 32:{
type = Pg_IMAGE_DIRECT_8888;
}
break;
default:{
/* should never get here */
fprintf(stderr,"error: unsupported bbp = %d\n",
screen->format->BitsPerPixel);
return -1;
}
break;
}
//using shared memory for speed (set last param to 1)
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if ((SDL_Image = PhCreateImage( NULL, screen->w, screen->h, type, NULL, 0, 1 )) == NULL)
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{
fprintf(stderr,"error: PhCreateImage failed.\n");
return -1;
}
screen->pixels = SDL_Image->image;
this->UpdateRects = ph_NormalUpdate;
return 0;
}
int ph_SetupOCImage(_THIS, SDL_Surface *screen) //Offscreen context
{
int type = 0;
/* Determine image type */
switch(screen->format->BitsPerPixel)
{
case 8:{
type = Pg_IMAGE_PALETTE_BYTE;
}
break;
case 15:{
type = Pg_IMAGE_DIRECT_555;
}
break;
case 16:{
type = Pg_IMAGE_DIRECT_565;
}
break;
case 24:{
type = Pg_IMAGE_DIRECT_888;
}
break;
case 32:{
type = Pg_IMAGE_DIRECT_8888;
}
break;
default:{
/* should never get here */
fprintf(stderr,"error: unsupported bbp = %d\n",
screen->format->BitsPerPixel);
return -1;
}
break;
}
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OCImage.FrameData0 = (FRAMEDATA *) malloc((size_t)(sizeof( FRAMEDATA)));
OCImage.FrameData1 = (FRAMEDATA *) malloc((size_t)(sizeof( FRAMEDATA)));
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if(OCImage.direct_context == NULL)
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OCImage.direct_context = PdCreateDirectContext();
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OCImage.offscreen_context = PdCreateOffscreenContext(0,screen->w,screen->h, Pg_OSC_MEM_PAGE_ALIGN);
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if (OCImage.offscreen_context == NULL)
{
printf("PdCreateOffscreenContext failed\n");
return -1;
}
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OCImage.Stride = OCImage.offscreen_context->pitch;
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if (OCImage.flags & SDL_DOUBLEBUF)
printf("hardware flag for doublebuf offscreen context\n");
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OCImage.dc_ptr.ptr8 = (unsigned char *) PdGetOffscreenContextPtr(OCImage.offscreen_context);
OCImage.CurrentFrameData = OCImage.FrameData0;
OCImage.CurrentFrameData->Y = OCImage.dc_ptr.ptr8;
OCImage.CurrentFrameData->U = NULL;
OCImage.CurrentFrameData->V = NULL;
OCImage.current = 0;
if(OCImage.dc_ptr.ptr8 == NULL)
{
printf("PdGetOffscreenContextPtr failed\n");
return -1;
}
PhDCSetCurrent(OCImage.offscreen_context);
screen->pixels = OCImage.CurrentFrameData->Y;
this->UpdateRects = ph_OCUpdate;
return 0;
}
void ph_DestroyImage(_THIS, SDL_Surface *screen)
{
if(SDL_Image == NULL)
return;
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if (OCImage.offscreen_context != NULL)
{
PhDCRelease(OCImage.offscreen_context);
OCImage.offscreen_context = NULL;
free(OCImage.FrameData0);
OCImage.FrameData0 = NULL;
free(OCImage.FrameData1);
OCImage.FrameData1 = NULL;
}
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if (SDL_Image->image)
{
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// SDL_Image->flags=Ph_RELEASE_IMAGE;
// PhReleaseImage(SDL_Image);
PgShmemDestroy(SDL_Image->image); // Use this if you using shared memory, or uncomment
// lines above if not (and comment this line ;-)
free(SDL_Image);
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}
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if ( screen )
{
screen->pixels = NULL;
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}
SDL_Image = NULL;
}
int ph_ResizeImage(_THIS, SDL_Surface *screen, Uint32 flags)
{
ph_DestroyImage(this, screen);
if( flags & SDL_HWSURFACE)
{
OCImage.flags = flags; //needed for SDL_DOUBLEBUF check
return ph_SetupOCImage(this,screen);
}
else if(flags & SDL_OPENGL) /* No image when using GL */
{
return 0;
}
else
{
return ph_SetupImage(this, screen);
}
}
int ph_AllocHWSurface(_THIS, SDL_Surface *surface)
{
return(-1);
}
void ph_FreeHWSurface(_THIS, SDL_Surface *surface)
{
return;
}
int ph_FlipHWSurface(_THIS, SDL_Surface *surface)
{
return(0);
}
int ph_LockHWSurface(_THIS, SDL_Surface *surface)
{
if ( (surface == SDL_VideoSurface) && blit_queued ) {
// XSync(GFX_Display, False);
PgFlush();
blit_queued = 0;
}
return(0);
}
void ph_UnlockHWSurface(_THIS, SDL_Surface *surface)
{
return;
}
static PhPoint_t ph_pos;
static PhRect_t ph_rect;
static int i;
void ph_NormalUpdate(_THIS, int numrects, SDL_Rect *rects)
{
for ( i=0; i<numrects; ++i )
{
if ( rects[i].w == 0 ) { /* Clipped? */
continue;
}
ph_pos.x = rects[i].x;
ph_pos.y = rects[i].y;
ph_rect.ul.x = rects[i].x;
ph_rect.ul.y = rects[i].y;
ph_rect.lr.x = rects[i].x + rects[i].w;
ph_rect.lr.y = rects[i].y + rects[i].h;
if (PgDrawPhImageRectmx( &ph_pos, SDL_Image, &ph_rect, 0 ) < 0)
{
fprintf(stderr,"error: PgDrawPhImageRectmx failed.\n");
}
}
if (PgFlush() < 0)
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fprintf(stderr,"error: PgFlush failed.\n");
}
}
void ph_OCUpdate(_THIS, int numrects, SDL_Rect *rects)
{
PhPoint_t zero = {0};
PhRect_t src_rect;
PhRect_t dest_rect;
if(OCImage.direct_context == NULL)
{
return;
}
PgSetRegion(PtWidgetRid(window));
PgSetClipping(0,NULL);
PgWaitHWIdle();
for ( i=0; i<numrects; ++i )
{
if ( rects[i].w == 0 ) { /* Clipped? */
continue;
}
src_rect.ul.x=rects[i].x;
src_rect.ul.y=rects[i].y;
dest_rect.ul.x=rects[i].x;
dest_rect.ul.y=rects[i].y;
dest_rect.lr.x=src_rect.lr.x= rects[i].x +rects[i].w;
dest_rect.lr.y=src_rect.lr.y= rects[i].y +rects[i].h;
zero.x = zero.y = 0;
PgSetTranslation (&zero, 0);
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PgSetRegion(PtWidgetRid(window));
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PgSetClipping(0,NULL);
PgContextBlitArea(OCImage.offscreen_context, (PhArea_t *)(&src_rect), NULL, (PhArea_t *)(&dest_rect));
}
if (PgFlush() < 0)
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fprintf(stderr,"error: PgFlush failed.\n");
}
//later used to toggling double buffer
if(OCImage.current == 0)
{
OCImage.CurrentFrameData = OCImage.FrameData0;
}
else
{
OCImage.CurrentFrameData = OCImage.FrameData1;
}
}