443 lines
12 KiB
C++
443 lines
12 KiB
C++
/*
|
|
* OpenTyrian Classic: A modern cross-platform port of Tyrian
|
|
* Copyright (C) 2007-2010 The OpenTyrian Development Team
|
|
*
|
|
* Scale2x, Scale3x
|
|
* Copyright (C) 2001, 2002, 2003, 2004 Andrea Mazzoleni
|
|
*
|
|
* This program 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 Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program 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 this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#include "video_scale.h"
|
|
|
|
#include "palette.h"
|
|
#include "video.h"
|
|
|
|
#include <assert.h>
|
|
|
|
static void no_scale( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
static void nn_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
static void nn_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
|
|
static void scale2x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
static void scale2x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
static void scale3x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
static void scale3x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
|
|
void hq2x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
void hq3x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
void hq4x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface );
|
|
|
|
uint scaler;
|
|
|
|
const struct Scalers scalers[] =
|
|
{
|
|
#ifdef ANDROID
|
|
{ vga_width, vga_height, no_scale, nn_16, nn_32, "None" },
|
|
#endif
|
|
#if defined(TARGET_GP2X) || defined(TARGET_DINGUX)
|
|
{ 320, 240, no_scale, nn_16, nn_32, "None" },
|
|
#else
|
|
{ 1 * vga_width, 1 * vga_height, no_scale, nn_16, nn_32, "None" },
|
|
{ 2 * vga_width, 2 * vga_height, NULL, nn_16, nn_32, "2x" },
|
|
{ 2 * vga_width, 2 * vga_height, NULL, scale2x_16, scale2x_32, "Scale2x" },
|
|
{ 2 * vga_width, 2 * vga_height, NULL, NULL, hq2x_32, "hq2x" },
|
|
{ 3 * vga_width, 3 * vga_height, NULL, nn_16, nn_32, "3x" },
|
|
{ 3 * vga_width, 3 * vga_height, NULL, scale3x_16, scale3x_32, "Scale3x" },
|
|
{ 3 * vga_width, 3 * vga_height, NULL, NULL, hq3x_32, "hq3x" },
|
|
{ 4 * vga_width, 4 * vga_height, NULL, nn_16, nn_32, "4x" },
|
|
{ 4 * vga_width, 4 * vga_height, NULL, NULL, hq4x_32, "hq4x" },
|
|
#endif
|
|
};
|
|
const uint scalers_count = COUNTOF(scalers);
|
|
|
|
void set_scaler_by_name( const char *name )
|
|
{
|
|
for (uint i = 0; i < scalers_count; ++i)
|
|
{
|
|
if (strcmp(name, scalers[i].name) == 0)
|
|
{
|
|
scaler = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
#if defined(TARGET_GP2X) || defined(TARGET_DINGUX)
|
|
#define VGA_CENTERED
|
|
#endif
|
|
|
|
void no_scale( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels,
|
|
*dst = (Uint8 *)dst_surface->pixels;
|
|
|
|
#ifdef VGA_CENTERED
|
|
size_t blank = (dst_surface->h - src_surface->h) / 2 * dst_surface->pitch;
|
|
memset(dst, 0, blank);
|
|
dst += blank;
|
|
#endif
|
|
|
|
memcpy(dst, src, src_surface->pitch * src_surface->h);
|
|
|
|
#ifdef VGA_CENTERED
|
|
dst += src_surface->pitch * src_surface->h;
|
|
memset(dst, 0, blank);
|
|
#endif
|
|
}
|
|
|
|
|
|
void nn_32( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 4; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width, // src_surface->w
|
|
scale = dst_surface->w / width;
|
|
assert(scale == dst_surface->h / height);
|
|
|
|
#ifdef VGA_CENTERED
|
|
size_t blank = (dst_surface->h - src_surface->h) / 2 * dst_surface->pitch;
|
|
memset(dst, 0, blank);
|
|
dst += blank;
|
|
#endif
|
|
|
|
for (int y = height; y > 0; y--)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
for (int x = width; x > 0; x--)
|
|
{
|
|
for (int z = scale; z > 0; z--)
|
|
{
|
|
*(Uint32 *)dst = rgb_palette[*src];
|
|
dst += dst_Bpp;
|
|
}
|
|
src++;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + dst_pitch;
|
|
|
|
for (int z = scale; z > 1; z--)
|
|
{
|
|
memcpy(dst, dst_temp, dst_pitch);
|
|
dst += dst_pitch;
|
|
}
|
|
}
|
|
|
|
#ifdef VGA_CENTERED
|
|
memset(dst, 0, blank);
|
|
#endif
|
|
}
|
|
|
|
void nn_16( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 2; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width, // src_surface->w
|
|
scale = dst_surface->w / width;
|
|
assert(scale == dst_surface->h / height);
|
|
|
|
#ifdef VGA_CENTERED
|
|
size_t blank = (dst_surface->h - src_surface->h) / 2 * dst_surface->pitch;
|
|
memset(dst, 0, blank);
|
|
dst += blank;
|
|
#endif
|
|
|
|
for (int y = height; y > 0; y--)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
for (int x = width; x > 0; x--)
|
|
{
|
|
for (int z = scale; z > 0; z--)
|
|
{
|
|
*(Uint16 *)dst = rgb_palette[*src];
|
|
dst += dst_Bpp;
|
|
}
|
|
src++;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + dst_pitch;
|
|
|
|
for (int z = scale; z > 1; z--)
|
|
{
|
|
memcpy(dst, dst_temp, dst_pitch);
|
|
dst += dst_pitch;
|
|
}
|
|
}
|
|
|
|
#ifdef VGA_CENTERED
|
|
memset(dst, 0, blank);
|
|
#endif
|
|
}
|
|
|
|
|
|
void scale2x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 4; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width; // src_surface->w
|
|
|
|
int prevline, nextline;
|
|
|
|
Uint32 E0, E1, E2, E3, B, D, E, F, H;
|
|
for (int y = 0; y < height; y++)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
prevline = (y > 0) ? -src_pitch : 0;
|
|
nextline = (y < height - 1) ? src_pitch : 0;
|
|
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
B = rgb_palette[*(src + prevline)];
|
|
D = rgb_palette[*(x > 0 ? src - 1 : src)];
|
|
E = rgb_palette[*src];
|
|
F = rgb_palette[*(x < width - 1 ? src + 1 : src)];
|
|
H = rgb_palette[*(src + nextline)];
|
|
|
|
if (B != H && D != F) {
|
|
E0 = D == B ? D : E;
|
|
E1 = B == F ? F : E;
|
|
E2 = D == H ? D : E;
|
|
E3 = H == F ? F : E;
|
|
} else {
|
|
E0 = E1 = E2 = E3 = E;
|
|
}
|
|
|
|
*(Uint32 *)dst = E0;
|
|
*(Uint32 *)(dst + dst_Bpp) = E1;
|
|
*(Uint32 *)(dst + dst_pitch) = E2;
|
|
*(Uint32 *)(dst + dst_pitch + dst_Bpp) = E3;
|
|
|
|
src++;
|
|
dst += 2 * dst_Bpp;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + 2 * dst_pitch;
|
|
}
|
|
}
|
|
|
|
void scale2x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 2; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width; // src_surface->w
|
|
|
|
int prevline, nextline;
|
|
|
|
Uint16 E0, E1, E2, E3, B, D, E, F, H;
|
|
for (int y = 0; y < height; y++)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
prevline = (y > 0) ? -src_pitch : 0;
|
|
nextline = (y < height - 1) ? src_pitch : 0;
|
|
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
B = rgb_palette[*(src + prevline)];
|
|
D = rgb_palette[*(x > 0 ? src - 1 : src)];
|
|
E = rgb_palette[*src];
|
|
F = rgb_palette[*(x < width - 1 ? src + 1 : src)];
|
|
H = rgb_palette[*(src + nextline)];
|
|
|
|
if (B != H && D != F) {
|
|
E0 = D == B ? D : E;
|
|
E1 = B == F ? F : E;
|
|
E2 = D == H ? D : E;
|
|
E3 = H == F ? F : E;
|
|
} else {
|
|
E0 = E1 = E2 = E3 = E;
|
|
}
|
|
|
|
*(Uint16 *)dst = E0;
|
|
*(Uint16 *)(dst + dst_Bpp) = E1;
|
|
*(Uint16 *)(dst + dst_pitch) = E2;
|
|
*(Uint16 *)(dst + dst_pitch + dst_Bpp) = E3;
|
|
|
|
src++;
|
|
dst += 2 * dst_Bpp;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + 2 * dst_pitch;
|
|
}
|
|
}
|
|
|
|
|
|
void scale3x_32( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 4; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width; // src_surface->w
|
|
|
|
int prevline, nextline;
|
|
|
|
Uint32 E0, E1, E2, E3, E4, E5, E6, E7, E8, A, B, C, D, E, F, G, H, I;
|
|
for (int y = 0; y < height; y++)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
prevline = (y > 0) ? -src_pitch : 0;
|
|
nextline = (y < height - 1) ? src_pitch : 0;
|
|
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
A = rgb_palette[*(src + prevline - (x > 0 ? 1 : 0))];
|
|
B = rgb_palette[*(src + prevline)];
|
|
C = rgb_palette[*(src + prevline + (x < width - 1 ? 1 : 0))];
|
|
D = rgb_palette[*(src - (x > 0 ? 1 : 0))];
|
|
E = rgb_palette[*src];
|
|
F = rgb_palette[*(src + (x < width - 1 ? 1 : 0))];
|
|
G = rgb_palette[*(src + nextline - (x > 0 ? 1 : 0))];
|
|
H = rgb_palette[*(src + nextline)];
|
|
I = rgb_palette[*(src + nextline + (x < width - 1 ? 1 : 0))];
|
|
|
|
if (B != H && D != F) {
|
|
E0 = D == B ? D : E;
|
|
E1 = (D == B && E != C) || (B == F && E != A) ? B : E;
|
|
E2 = B == F ? F : E;
|
|
E3 = (D == B && E != G) || (D == H && E != A) ? D : E;
|
|
E4 = E;
|
|
E5 = (B == F && E != I) || (H == F && E != C) ? F : E;
|
|
E6 = D == H ? D : E;
|
|
E7 = (D == H && E != I) || (H == F && E != G) ? H : E;
|
|
E8 = H == F ? F : E;
|
|
} else {
|
|
E0 = E1 = E2 = E3 = E4 = E5 = E6 = E7 = E8 = E;
|
|
}
|
|
|
|
*(Uint32 *)dst = E0;
|
|
*(Uint32 *)(dst + dst_Bpp) = E1;
|
|
*(Uint32 *)(dst + 2 * dst_Bpp) = E2;
|
|
*(Uint32 *)(dst + dst_pitch) = E3;
|
|
*(Uint32 *)(dst + dst_pitch + dst_Bpp) = E4;
|
|
*(Uint32 *)(dst + dst_pitch + 2 * dst_Bpp) = E5;
|
|
*(Uint32 *)(dst + 2 * dst_pitch) = E6;
|
|
*(Uint32 *)(dst + 2 * dst_pitch + dst_Bpp) = E7;
|
|
*(Uint32 *)(dst + 2 * dst_pitch + 2 * dst_Bpp) = E8;
|
|
|
|
src++;
|
|
dst += 3 * dst_Bpp;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + 3 * dst_pitch;
|
|
}
|
|
}
|
|
|
|
void scale3x_16( SDL_Surface *src_surface, SDL_Surface *dst_surface )
|
|
{
|
|
Uint8 *src = (Uint8 *)src_surface->pixels, *src_temp,
|
|
*dst = (Uint8 *)dst_surface->pixels, *dst_temp;
|
|
int src_pitch = src_surface->pitch,
|
|
dst_pitch = dst_surface->pitch;
|
|
const int dst_Bpp = 2; // dst_surface->format->BytesPerPixel
|
|
|
|
const int height = vga_height, // src_surface->h
|
|
width = vga_width; // src_surface->w
|
|
|
|
int prevline, nextline;
|
|
|
|
Uint16 E0, E1, E2, E3, E4, E5, E6, E7, E8, A, B, C, D, E, F, G, H, I;
|
|
for (int y = 0; y < height; y++)
|
|
{
|
|
src_temp = src;
|
|
dst_temp = dst;
|
|
|
|
prevline = (y > 0) ? -src_pitch : 0;
|
|
nextline = (y < height - 1) ? src_pitch : 0;
|
|
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
A = rgb_palette[*(src + prevline - (x > 0 ? 1 : 0))];
|
|
B = rgb_palette[*(src + prevline)];
|
|
C = rgb_palette[*(src + prevline + (x < width - 1 ? 1 : 0))];
|
|
D = rgb_palette[*(src - (x > 0 ? 1 : 0))];
|
|
E = rgb_palette[*src];
|
|
F = rgb_palette[*(src + (x < width - 1 ? 1 : 0))];
|
|
G = rgb_palette[*(src + nextline - (x > 0 ? 1 : 0))];
|
|
H = rgb_palette[*(src + nextline)];
|
|
I = rgb_palette[*(src + nextline + (x < width - 1 ? 1 : 0))];
|
|
|
|
if (B != H && D != F) {
|
|
E0 = D == B ? D : E;
|
|
E1 = (D == B && E != C) || (B == F && E != A) ? B : E;
|
|
E2 = B == F ? F : E;
|
|
E3 = (D == B && E != G) || (D == H && E != A) ? D : E;
|
|
E4 = E;
|
|
E5 = (B == F && E != I) || (H == F && E != C) ? F : E;
|
|
E6 = D == H ? D : E;
|
|
E7 = (D == H && E != I) || (H == F && E != G) ? H : E;
|
|
E8 = H == F ? F : E;
|
|
} else {
|
|
E0 = E1 = E2 = E3 = E4 = E5 = E6 = E7 = E8 = E;
|
|
}
|
|
|
|
*(Uint16 *)dst = E0;
|
|
*(Uint16 *)(dst + dst_Bpp) = E1;
|
|
*(Uint16 *)(dst + 2 * dst_Bpp) = E2;
|
|
*(Uint16 *)(dst + dst_pitch) = E3;
|
|
*(Uint16 *)(dst + dst_pitch + dst_Bpp) = E4;
|
|
*(Uint16 *)(dst + dst_pitch + 2 * dst_Bpp) = E5;
|
|
*(Uint16 *)(dst + 2 * dst_pitch) = E6;
|
|
*(Uint16 *)(dst + 2 * dst_pitch + dst_Bpp) = E7;
|
|
*(Uint16 *)(dst + 2 * dst_pitch + 2 * dst_Bpp) = E8;
|
|
|
|
src++;
|
|
dst += 3 * dst_Bpp;
|
|
}
|
|
|
|
src = src_temp + src_pitch;
|
|
dst = dst_temp + 3 * dst_pitch;
|
|
}
|
|
}
|
|
|
|
// kate: tab-width 4; vim: set noet:
|