99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
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int CreatePixmap(pixmap_t *io)
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{
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local_pixmap_t *pixmap;
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unsigned pitch;
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size_t size;
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void *local;
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if( (io->width == 0) || (io->width > 2048)||
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(io->height == 0)|| (io->height > 2048))
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{
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dbgprintf("Invalid pixmap size w:%d h:%d\n", io->width,io->height);
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return ERR_PARAM;
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};
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pitch = ((io->width+15)&~15)*4;
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size = pitch*io->height;
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dbgprintf("pitch = %d\n", pitch);
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local = rhd_mem_alloc(&rhd,RHD_MEM_FB,size) ;
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if ( !local)
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{
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dbgprintf("Not enough memory for pixmap\n");
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return ERR_PARAM;
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};
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pixmap = malloc(sizeof(local_pixmap_t));
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if(!pixmap)
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{
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rhd_mem_free(&rhd, RHD_MEM_FB,local);
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return ERR_PARAM;
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}
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else
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{
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void *mapped;
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size = (size+4095) & ~ 4095;
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if (mapped = UserAlloc(size))
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{
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CommitPages(mapped, ((u32_t)local+rhd.LinearAddr)|7|(1<<9), size);
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io->mapped = mapped;
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io->pitch = pitch;
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io->handle = (u32_t)pixmap;
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pixmap->width = io->width;
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pixmap->height = io->height;
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pixmap->format = PICT_a8r8g8b8;
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pixmap->flags = io->flags;
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pixmap->pitch = pitch;
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pixmap->mapped = mapped;
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pixmap->pitch_offset = ((pitch/64)<<22)| (((u32_t)local+rhd.fbLocation)>>10);
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pixmap->local = local+rhd.fbLocation;
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dbgprintf("pixmap.pitch_offset: %x\n", pixmap->pitch_offset);
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dbgprintf("width: %d height: %d\n",pixmap->width,pixmap->height );
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dbgprintf("map at %x\n", pixmap->mapped);
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return ERR_OK;
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};
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rhd_mem_free(&rhd, RHD_MEM_FB,local);
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free(pixmap);
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};
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return ERR_PARAM;
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};
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int DestroyPixmap( pixmap_t *io )
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{
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local_pixmap_t *pixmap;
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size_t size;
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dbgprintf("Destroy pixmap %x\n", io->handle);
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if(io->handle == -1)
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return ERR_PARAM;
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else
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pixmap = (local_pixmap_t*)io->handle;
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size = (pixmap->pitch*pixmap->height+4095) & ~ 4095;
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UnmapPages(pixmap->mapped, size);
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UserFree(pixmap->mapped);
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rhd_mem_free(&rhd,RHD_MEM_FB,pixmap->local-rhd.fbLocation);
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free(pixmap);
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io->format = 0;
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io->pitch = 0;
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io->mapped = NULL;
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io->handle = 0;
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return ERR_OK;
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};
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