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/* Copyright (C) 2010-2020 The RetroArch team
*
* ---------------------------------------------------------------------------------------
* The following license statement only applies to this file (scaler.h).
* ---------------------------------------------------------------------------------------
*
* Permission is hereby granted, free of charge,
* to any person obtaining a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef __LIBRETRO_SDK_SCALER_H__
#define __LIBRETRO_SDK_SCALER_H__
#include <stdint.h>
#include <stddef.h>
#include <boolean.h>
#include <clamping.h>
#include <retro_common_api.h>
RETRO_BEGIN_DECLS
enum scaler_pix_fmt
{
SCALER_FMT_ARGB8888 = 0,
SCALER_FMT_ABGR8888,
SCALER_FMT_0RGB1555,
SCALER_FMT_RGB565,
SCALER_FMT_BGR24,
SCALER_FMT_YUYV,
SCALER_FMT_RGBA4444
};
enum scaler_type
{
SCALER_TYPE_UNKNOWN = 0,
SCALER_TYPE_POINT,
SCALER_TYPE_BILINEAR,
SCALER_TYPE_SINC
};
struct scaler_filter
{
int16_t *filter;
int *filter_pos;
int filter_len;
int filter_stride;
};
struct scaler_ctx
{
void (*scaler_horiz)(const struct scaler_ctx*,
const void*, int);
void (*scaler_vert)(const struct scaler_ctx*,
void*, int);
void (*scaler_special)(const struct scaler_ctx*,
void*, const void*, int, int, int, int, int, int);
void (*in_pixconv)(void*, const void*, int, int, int, int);
void (*out_pixconv)(void*, const void*, int, int, int, int);
void (*direct_pixconv)(void*, const void*, int, int, int, int);
struct scaler_filter horiz, vert; /* ptr alignment */
struct
{
uint32_t *frame;
int stride;
} input;
struct
{
uint64_t *frame;
int width;
int height;
int stride;
} scaled;
struct
{
uint32_t *frame;
int stride;
} output;
int in_width;
int in_height;
int in_stride;
int out_width;
int out_height;
int out_stride;
enum scaler_pix_fmt in_fmt;
enum scaler_pix_fmt out_fmt;
enum scaler_type scaler_type;
bool unscaled;
};
bool scaler_ctx_gen_filter(struct scaler_ctx *ctx);
void scaler_ctx_gen_reset(struct scaler_ctx *ctx);
/**
* scaler_ctx_scale:
* @ctx : pointer to scaler context object.
* @output : pointer to output image.
* @input : pointer to input image.
*
* Scales an input image to an output image.
**/
void scaler_ctx_scale(struct scaler_ctx *ctx,
void *output, const void *input);
RETRO_END_DECLS
#endif
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