/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see .
*/
#include "video_pixel_converter.h"
#include
#include "../general.h"
void deinit_pixel_converter(void)
{
driver_t *driver = driver_get_ptr();
scaler_ctx_gen_reset(&driver->scaler);
memset(&driver->scaler, 0, sizeof(driver->scaler));
free(driver->scaler_out);
driver->scaler_out = NULL;
}
bool init_video_pixel_converter(unsigned size)
{
driver_t *driver = driver_get_ptr();
global_t *global = global_get_ptr();
/* This function can be called multiple times
* without deiniting first on consoles. */
deinit_pixel_converter();
/* If pixel format is not 0RGB1555, we don't need to do
* any internal pixel conversion. */
if (global->system.pix_fmt != RETRO_PIXEL_FORMAT_0RGB1555)
return true;
RARCH_WARN("0RGB1555 pixel format is deprecated, and will be slower. For 15/16-bit, RGB565 format is preferred.\n");
driver->scaler.scaler_type = SCALER_TYPE_POINT;
driver->scaler.in_fmt = SCALER_FMT_0RGB1555;
/* TODO: Pick either ARGB8888 or RGB565 depending on driver. */
driver->scaler.out_fmt = SCALER_FMT_RGB565;
if (!scaler_ctx_gen_filter(&driver->scaler))
return false;
driver->scaler_out = calloc(sizeof(uint16_t), size * size);
return true;
}
unsigned video_pixel_get_alignment(unsigned pitch)
{
if (pitch & 1)
return 1;
if (pitch & 2)
return 2;
if (pitch & 4)
return 4;
return 8;
}