video_frame.h

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/* Copyright (C) 2010-2018 The RetroArch team
 *
 * ---------------------------------------------------------------------------------------
 * The following license statement only applies to this file (video_frame.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_VIDEO_FRAME_H
#define _LIBRETRO_SDK_VIDEO_FRAME_H

#include <stdint.h>
#include <retro_common_api.h>
#include <retro_inline.h>

#include <gfx/scaler/scaler.h>

#include <libretro.h>

RETRO_BEGIN_DECLS

#define scaler_ctx_scale_direct(ctx, output, input) \
{ \
 if (ctx && ctx->unscaled && ctx->direct_pixconv) \
 /* Just perform straight pixel conversion. */ \
 ctx->direct_pixconv(output, input, \
 ctx->out_width, ctx->out_height, \
 ctx->out_stride, ctx->in_stride); \
 else \
 scaler_ctx_scale(ctx, output, input); \
}

static INLINE void video_frame_convert_rgb16_to_rgb32(
 struct scaler_ctx *scaler,
 void *output,
 const void *input,
 int width, int height,
 int in_pitch)
{
 if (width != scaler->in_width || height != scaler->in_height)
 {
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->out_width = width;
 scaler->out_height = height;
 scaler->in_fmt = SCALER_FMT_RGB565;
 scaler->out_fmt = SCALER_FMT_ARGB8888;
 scaler->scaler_type = SCALER_TYPE_POINT;
 scaler_ctx_gen_filter(scaler);
 }

 scaler->in_stride = in_pitch;
 scaler->out_stride = width * sizeof(uint32_t);

 scaler_ctx_scale_direct(scaler, output, input);
}

static INLINE void video_frame_scale(
 struct scaler_ctx *scaler,
 void *output,
 const void *input,
 enum scaler_pix_fmt format,
 unsigned scaler_width,
 unsigned scaler_height,
 unsigned scaler_pitch,
 unsigned width,
 unsigned height,
 unsigned pitch)
{
 if (
 width != (unsigned)scaler->in_width
 || height != (unsigned)scaler->in_height
 || format != scaler->in_fmt
 || pitch != (unsigned)scaler->in_stride
 )
 {
 scaler->in_fmt = format;
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->in_stride = pitch;

 scaler->out_width = scaler_width;
 scaler->out_height = scaler_height;
 scaler->out_stride = scaler_pitch;

 scaler_ctx_gen_filter(scaler);
 }

 scaler_ctx_scale_direct(scaler, output, input);
}

static INLINE void video_frame_record_scale(
 struct scaler_ctx *scaler,
 void *output,
 const void *input,
 unsigned scaler_width,
 unsigned scaler_height,
 unsigned scaler_pitch,
 unsigned width,
 unsigned height,
 unsigned pitch,
 bool bilinear)
{
 if (
 width != (unsigned)scaler->in_width
 || height != (unsigned)scaler->in_height
 )
 {
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->in_stride = pitch;

 scaler->scaler_type = bilinear ?
 SCALER_TYPE_BILINEAR : SCALER_TYPE_POINT;

 scaler->out_width = scaler_width;
 scaler->out_height = scaler_height;
 scaler->out_stride = scaler_pitch;

 scaler_ctx_gen_filter(scaler);
 }

 scaler_ctx_scale_direct(scaler, output, input);
}

static INLINE void video_frame_convert_argb8888_to_abgr8888(
 struct scaler_ctx *scaler,
 void *output, const void *input,
 int width, int height, int in_pitch)
{
 if (width != scaler->in_width || height != scaler->in_height)
 {
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->out_width = width;
 scaler->out_height = height;
 scaler->in_fmt = SCALER_FMT_ARGB8888;
 scaler->out_fmt = SCALER_FMT_ABGR8888;
 scaler->scaler_type = SCALER_TYPE_POINT;
 scaler_ctx_gen_filter(scaler);
 }

 scaler->in_stride = in_pitch;
 scaler->out_stride = width * sizeof(uint32_t);

 scaler_ctx_scale_direct(scaler, output, input);
}

static INLINE void video_frame_convert_to_bgr24(
 struct scaler_ctx *scaler,
 void *output, const void *input,
 int width, int height, int in_pitch)
{
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->out_width = width;
 scaler->out_height = height;
 scaler->out_fmt = SCALER_FMT_BGR24;
 scaler->scaler_type = SCALER_TYPE_POINT;

 scaler_ctx_gen_filter(scaler);

 scaler->in_stride = in_pitch;
 scaler->out_stride = width * 3;

 scaler_ctx_scale_direct(scaler, output, input);
}

static INLINE void video_frame_convert_rgba_to_bgr(
 const void *src_data,
 void *dst_data,
 unsigned width)
{
 unsigned x;
 uint8_t *dst = (uint8_t*)dst_data;
 const uint8_t *src = (const uint8_t*)src_data;

 for (x = 0; x < width; x++, dst += 3, src += 4)
 {
 dst[0] = src[2];
 dst[1] = src[1];
 dst[2] = src[0];
 }
}

static INLINE bool video_pixel_frame_scale(
 struct scaler_ctx *scaler,
 void *output, const void *data,
 unsigned width, unsigned height,
 size_t pitch)
{
 scaler->in_width = width;
 scaler->in_height = height;
 scaler->out_width = width;
 scaler->out_height = height;
 scaler->in_stride = (int)pitch;
 scaler->out_stride = width * sizeof(uint16_t);

 scaler_ctx_scale_direct(scaler, output, data);

 return true;
}

RETRO_END_DECLS

#endif