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AnimationInfo.cpp
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/* -*- C++ -*-
*
* AnimationInfo.cpp - General image storage class of ONScripter
*
* Copyright (c) 2001-2016 Ogapee. All rights reserved.
* (C) 2014-2016 jh10001 <jh10001@live.cn>
*
* ogapee@aqua.dti2.ne.jp
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "AnimationInfo.h"
#include <math.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#if defined(USE_OMP_PARALLEL) || defined(USE_PARALLEL)
#include "Parallel.h"
#ifdef USE_PARALLEL
parallel::ThreadPool parallel::threadPool;
#endif //USE_PARALLEL
#endif
#ifdef USE_SIMD
#include "simd/simd.h"
#endif
#include "builtin_layer.h"
#define RMASK 0x00ff0000
#define GMASK 0x0000ff00
#define BMASK 0x000000ff
#define AMASK 0xff000000
#define RBMASK (RMASK|BMASK)
static bool is_inv_alpha_lut_initialized = false;
static Uint32 inv_alpha_lut[256];
AnimationInfo::AnimationInfo()
{
image_name = NULL;
surface_name = NULL;
mask_surface_name = NULL;
image_surface = NULL;
alpha_buf = NULL;
mutex = SDL_CreateMutex();
duration_list = NULL;
color_list = NULL;
file_name = NULL;
mask_file_name = NULL;
trans_mode = TRANS_TOPLEFT;
affine_flag = false;
if (!is_inv_alpha_lut_initialized){
inv_alpha_lut[0] = 255;
for (int i=1; i<255; i++)
inv_alpha_lut[i] = (Uint32)(0xffff / i);
is_inv_alpha_lut_initialized = true;
}
reset();
}
AnimationInfo::AnimationInfo(const AnimationInfo &anim)
{
*this = anim;
}
AnimationInfo::~AnimationInfo()
{
reset();
if (mutex) SDL_DestroyMutex(mutex);
}
AnimationInfo& AnimationInfo::operator =(const AnimationInfo &anim)
{
if (this != &anim){
memcpy(this, &anim, sizeof(AnimationInfo));
mutex = SDL_CreateMutex();
if (image_name){
image_name = new char[ strlen(anim.image_name) + 1 ];
strcpy( image_name, anim.image_name );
}
if (surface_name){
surface_name = new char[ strlen(anim.surface_name) + 1 ];
strcpy( surface_name, anim.surface_name );
}
if (mask_surface_name){
mask_surface_name = new char[ strlen(anim.mask_surface_name) + 1 ];
strcpy( mask_surface_name, anim.mask_surface_name );
}
if (file_name){
file_name = new char[ strlen(anim.file_name) + 1 ];
strcpy( file_name, anim.file_name );
}
if (mask_file_name){
mask_file_name = new char[ strlen(anim.mask_file_name) + 1 ];
strcpy( mask_file_name, anim.mask_file_name );
}
if (color_list){
color_list = new uchar3[ anim.num_of_cells ];
memcpy(color_list, anim.color_list, sizeof(uchar3)*anim.num_of_cells);
}
if (duration_list){
duration_list = new int[ anim.num_of_cells ];
memcpy(duration_list, anim.duration_list, sizeof(int)*anim.num_of_cells);
}
if (image_surface){
image_surface = allocSurface( anim.image_surface->w, anim.image_surface->h, texture_format );
memcpy(image_surface->pixels, anim.image_surface->pixels, anim.image_surface->pitch*anim.image_surface->h);
}
}
return *this;
}
void AnimationInfo::reset()
{
remove();
trans = -1;
default_alpha = 0xff;
orig_pos.x = orig_pos.y = 0;
pos.x = pos.y = 0;
visible = false;
abs_flag = true;
scale_x = scale_y = rot = 0;
blending_mode = BLEND_NORMAL;
font_size_xy[0] = font_size_xy[1] = -1;
font_pitch[0] = font_pitch[1] = -1;
mat[0][0] = 1024;
mat[0][1] = 0;
mat[1][0] = 0;
mat[1][1] = 1024;
#ifdef USE_BUILTIN_LAYER_EFFECTS
layer_no = -1;
#endif
}
void AnimationInfo::deleteImageName(){
if ( image_name ) delete[] image_name;
image_name = NULL;
}
void AnimationInfo::setImageName( const char *name ){
deleteImageName();
image_name = new char[ strlen(name) + 1 ];
strcpy( image_name, name );
}
void AnimationInfo::deleteSurface(bool delete_surface_name)
{
if (delete_surface_name){
if ( surface_name ) delete[] surface_name;
surface_name = NULL;
if ( mask_surface_name ) delete[] mask_surface_name;
mask_surface_name = NULL;
}
SDL_mutexP(mutex);
if ( image_surface ) SDL_FreeSurface( image_surface );
image_surface = NULL;
SDL_mutexV(mutex);
if (alpha_buf) delete[] alpha_buf;
alpha_buf = NULL;
}
void AnimationInfo::remove()
{
deleteImageName();
deleteSurface();
removeTag();
}
void AnimationInfo::removeTag()
{
if ( duration_list ){
delete[] duration_list;
duration_list = NULL;
}
if ( color_list ){
delete[] color_list;
color_list = NULL;
}
if ( file_name ){
delete[] file_name;
file_name = NULL;
}
if ( mask_file_name ){
delete[] mask_file_name;
mask_file_name = NULL;
}
current_cell = 0;
num_of_cells = 0;
next_time = 0;
is_animatable = false;
is_single_line = true;
is_tight_region = true;
is_ruby_drawable = false;
direction = 1;
color[0] = color[1] = color[2] = 0;
}
bool AnimationInfo::proceedAnimation(int current_time)
{
if (!visible || !is_animatable || next_time > current_time) return false;
bool is_changed = false;
#ifdef USE_BUILTIN_LAYER_EFFECTS
if (trans_mode == AnimationInfo::TRANS_LAYER) {
if (layer_no >= 0) {
LayerInfo *tmp = &layer_info[layer_no];
if (tmp->handler) {
tmp->handler->update();
is_changed = true;
next_time += tmp->interval;
if (next_time <= current_time) {
next_time = current_time + 1;
}
}
}
}
else
#endif
while(next_time <= current_time){
if ( loop_mode != 3 && num_of_cells > 0 ){
current_cell += direction;
is_changed = true;
}
if ( current_cell < 0 ){ // loop_mode must be 2
if (num_of_cells == 1)
current_cell = 0;
else
current_cell = 1;
direction = 1;
}
else if ( current_cell >= num_of_cells ){
if ( loop_mode == 0 ){
current_cell = 0;
}
else if ( loop_mode == 1 ){
current_cell = num_of_cells - 1;
is_changed = false;
}
else{
current_cell = num_of_cells - 2;
if (current_cell < 0)
current_cell = 0;
direction = -1;
}
}
next_time += duration_list[ current_cell ];
if (duration_list[ current_cell ] <= 0){
next_time = current_time;
break;
}
}
return is_changed;
}
void AnimationInfo::setCell(int cell)
{
if (cell < 0) cell = 0;
else if (cell >= num_of_cells) cell = num_of_cells - 1;
current_cell = cell;
}
int AnimationInfo::doClipping( SDL_Rect *dst, SDL_Rect *clip, SDL_Rect *clipped )
{
if ( clipped ) clipped->x = clipped->y = 0;
if ( !dst ||
dst->x >= clip->x + clip->w || dst->x + dst->w <= clip->x ||
dst->y >= clip->y + clip->h || dst->y + dst->h <= clip->y )
return -1;
if ( dst->x < clip->x ){
dst->w -= clip->x - dst->x;
if ( clipped ) clipped->x = clip->x - dst->x;
dst->x = clip->x;
}
if ( clip->x + clip->w < dst->x + dst->w ){
dst->w = clip->x + clip->w - dst->x;
}
if ( dst->y < clip->y ){
dst->h -= clip->y - dst->y;
if ( clipped ) clipped->y = clip->y - dst->y;
dst->y = clip->y;
}
if ( clip->y + clip->h < dst->y + dst->h ){
dst->h = clip->y + clip->h - dst->y;
}
if ( clipped ){
clipped->w = dst->w;
clipped->h = dst->h;
}
return 0;
}
#ifdef USE_SIMD
inline void blendPixel32(const Uint32 *src_buffer, Uint32 *__restrict dst_buffer, Uint8 alpha, Uint8 *alphap) {
using namespace simd;
uint8x4 src = load(src_buffer), dst = load(dst_buffer);
ivec128 zero = ivec128::zero();
uint16x4 r1 = widen(src, zero);
uint16x4 dstu = widen(dst, zero);
r1 -= dstu;
uint16x4 am(alpha);
uint16x4 a(*alphap);
a = (a * am) >> immint<8>();
r1 = (r1 * a) >> immint<8>();
uint8x4 r = narrow_hz(r1);
r += dst;
*dst_buffer = uint8x4::cvt2i32(r) | AMASK;
}
inline void blend4Pixel32(const Uint32 *src_buffer, Uint32 *__restrict dst_buffer, Uint8 alpha, Uint8 *alphap) {
using namespace simd;
uint8x16 src = load_u(src_buffer), dst = load_u(dst_buffer);
ivec128 zero = ivec128::zero();
uint16x8 dstu = widen_lo(dst, zero);
uint16x8 r1 = widen_lo(src, zero);
r1 -= dstu;
dstu = widen_hi(dst, zero);
uint16x8 r2 = widen_hi(src, zero);
r2 -= dstu;
uint16x8 am(alpha);
uint16x8 a = uint16x8::set2(*alphap, *(alphap + 4));
alphap += 8;
a = (a * am) >> immint<8>();
r1 = (r1 * a) >> immint<8>();
a = uint16x8::set2(*alphap, *(alphap + 4));
a = (a * am) >> immint<8>();
r2 = (r2 * a) >> immint<8>();
uint8x16 r = pack_hz(r1, r2);
r += dst;
uint8x16 amask =
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
uint8x16::set(0, 0, 0, 0xFF);
#else
uint8x16::set(0xFF, 0, 0, 0);
#endif
r |= amask;
store_u(dst_buffer, r);
}
#define BLEND_PIXEL() do{\
blendPixel32(src_buffer, dst_buffer, alpha, alphap);\
alphap += 4;\
}while(0)
#else
#define BLEND_PIXEL() do{\
Uint32 mask2 = (*alphap * alpha) >> 8;\
Uint32 temp = *dst_buffer & 0xff00ff;\
Uint32 mask_rb = (((((*src_buffer & 0xff00ff) - temp ) * mask2 ) >> 8 ) + temp ) & 0xff00ff;\
temp = *dst_buffer & 0x00ff00;\
Uint32 mask_g = (((((*src_buffer & 0x00ff00) - temp ) * mask2 ) >> 8 ) + temp ) & 0x00ff00;\
*dst_buffer = mask_rb | mask_g | 0xff000000;\
alphap += 4;\
}while(0)
#endif
// Originally, the above looks like this.
// mask1 = mask2 ^ 0xff;
// Uint32 mask_rb = (((*dst_buffer & 0xff00ff) * mask1 +
// (*src_buffer & 0xff00ff) * mask2) >> 8) & 0xff00ff;
// Uint32 mask_g = (((*dst_buffer & 0x00ff00) * mask1 +
// (*src_buffer & 0x00ff00) * mask2) >> 8) & 0x00ff00;
#define ADDBLEND_PIXEL() do{\
Uint32 mask2 = (*alphap * alpha) >> 8;\
Uint32 mask_rb = (*dst_buffer & RBMASK) + ((((*src_buffer & RBMASK) * mask2) >> 8) & RBMASK);\
mask_rb |= ((mask_rb & AMASK) ? RMASK : 0) | ((mask_rb & GMASK) ? BMASK : 0);\
Uint32 mask_g = (*dst_buffer & GMASK) + ((((*src_buffer & GMASK) * mask2) >> 8) & GMASK);\
mask_g |= ((mask_g & RMASK) ? GMASK : 0);\
*dst_buffer = (mask_rb & RBMASK) | (mask_g & GMASK) | 0xff000000;\
alphap += 4;\
}while(0)
inline void rainAddBlendPixel32(const Uint32 *src_buffer, Uint32 *__restrict dst_buffer) {
#ifdef USE_SIMD
using namespace simd;
uint8x4 src = uint8x4::cvt2vec(*src_buffer);
uint8x4 dst = uint8x4::cvt2vec(*dst_buffer);
dst = adds(dst, src);
*dst_buffer = uint8x4::cvt2i32(dst);
#else
const Uint8 *src = (const Uint8*)src_buffer;
Uint8 *dst = (Uint8*)dst_buffer;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
++dst; ++src;
#endif
for (int i = 0; i < 3; ++i, ++src, ++dst) {
int result = (*dst) + (*src);
(*dst) = (result < 255) ? result : 255;
}
#endif
}
#ifdef USE_SIMD
inline void rainAddBlend32(const Uint32 *src_buffer, Uint32 *__restrict dst_buffer, int remain) {
using namespace simd;
while (remain >= 4) {
uint8x16 srcvec = load_u(src_buffer),
dstvec = load_u(dst_buffer);
uint8x16 r = adds(srcvec, dstvec);
store_u(dst_buffer, r);
remain -= 4; src_buffer += 4; dst_buffer += 4;
}
while (remain > 0) {
rainAddBlendPixel32(src_buffer, dst_buffer);
--remain; ++src_buffer; ++dst_buffer;
}
}
#endif // USE_SIMD
#define SUBBLEND_PIXEL(){\
Uint32 mask2 = (*alphap * alpha) >> 8;\
Uint32 mask_r = (*dst_buffer & RMASK) -\
((((*src_buffer & RMASK) * mask2) >> 8) & RMASK);\
mask_r &= ((mask_r & AMASK) ? 0 : RMASK);\
Uint32 mask_g = (*dst_buffer & GMASK) -\
((((*src_buffer & GMASK) * mask2) >> 8) & GMASK);\
mask_g &= ((mask_g & ~(GMASK | BMASK)) ? 0 : GMASK);\
Uint32 mask_b = (*dst_buffer & BMASK) -\
((((*src_buffer & BMASK) * mask2) >> 8) & BMASK);\
mask_b &= ((mask_b & ~BMASK) ? 0 : BMASK);\
*dst_buffer = (mask_r & RMASK) | (mask_g & GMASK) | (mask_b & BMASK) | 0xff000000;\
alphap += 4;\
}
void AnimationInfo::blendOnSurface( SDL_Surface *dst_surface, int dst_x, int dst_y,
SDL_Rect &clip, int alpha )
{
if ( image_surface == NULL ) return;
SDL_Rect dst_rect, src_rect;
dst_rect.x = dst_x;
dst_rect.y = dst_y;
dst_rect.w = pos.w;
dst_rect.h = pos.h;
if ( doClipping( &dst_rect, &clip, &src_rect ) ) return;
if (alpha == 0) return;
/* ---------------------------------------- */
SDL_LockSurface( dst_surface );
SDL_LockSurface( image_surface );
alpha &= 0xff;
int pitch = image_surface->pitch / sizeof(ONSBuf);
struct Blender {
ONSBuf *const stsrc_buffer, *const stdst_buffer;
const int alpha, dst_rect_w, dst_rect_h, pitch, dst_surface_w, blendmode;
void operator()(const int i) const {
const ONSBuf *src_buffer = stsrc_buffer + (pitch)* i;
ONSBuf *dst_buffer = stdst_buffer + (dst_surface_w)* i;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)src_buffer + 3;
#else
unsigned char *alphap = (unsigned char *)src_buffer;
#endif //SDL_BYTEORDER == SDL_LIL_ENDIAN
#ifdef USE_BUILTIN_LAYER_EFFECTS
if (blendmode == AnimationInfo::BLEND_ADD) {
#ifdef USE_SIMD
rainAddBlend32(src_buffer, dst_buffer, dst_rect_w);
#else
for (int j = dst_rect_w; j != 0; j--, src_buffer++, dst_buffer++) {
if (*src_buffer != AMASK) rainAddBlendPixel32(src_buffer, dst_buffer);
}
#endif //USE_SIMD
}
else
#endif
#ifdef USE_SIMD
{
int remain = dst_rect_w;
while (remain > 0) {
if (*alphap == 0) {
--remain; ++src_buffer; ++dst_buffer; alphap += 4;
}
else if ((*alphap == 255) && (alpha == 255)) {
*dst_buffer = *src_buffer;
--remain; ++src_buffer; ++dst_buffer; alphap += 4;
}
else if (remain >= 4) {
blend4Pixel32(src_buffer, dst_buffer, alpha, alphap);
remain -= 4; src_buffer += 4; dst_buffer += 4; alphap += 16;
}
else {
BLEND_PIXEL();
--remain; ++src_buffer; ++dst_buffer;
}
}
}
#else
for (int j = dst_rect_w; j != 0; j--, src_buffer++, dst_buffer++) {
BLEND_PIXEL();
}
#endif
}
} blender = {(ONSBuf *)image_surface->pixels + pitch * src_rect.y + image_surface->w * current_cell / num_of_cells + src_rect.x,
(ONSBuf *)dst_surface->pixels + dst_surface->w * dst_rect.y + dst_rect.x,
alpha, dst_rect.w, dst_rect.h, pitch, dst_surface->w, blending_mode};
#if defined(USE_PARALLEL) || defined(USE_OMP_PARALLEL)
parallel::For(0, dst_rect.h, 1, blender, dst_rect.h * dst_rect.w);
#else
for (int i = 0; i < dst_rect.h; i++) blender(i);
#endif
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( dst_surface );
}
void AnimationInfo::blendOnSurface2( SDL_Surface *dst_surface, int dst_x, int dst_y,
SDL_Rect &clip, int alpha )
{
if ( image_surface == NULL ) return;
if (scale_x == 0 || scale_y == 0) return;
// project corner point and calculate bounding box
int min_xy[2]={bounding_rect.x, bounding_rect.y};
int max_xy[2]={bounding_rect.x+bounding_rect.w-1,
bounding_rect.y+bounding_rect.h-1};
// clip bounding box
if (max_xy[0] < clip.x) return;
if (max_xy[0] >= clip.x + clip.w) max_xy[0] = clip.x + clip.w - 1;
if (min_xy[0] >= clip.x + clip.w) return;
if (min_xy[0] < clip.x) min_xy[0] = clip.x;
if (max_xy[1] < clip.y) return;
if (max_xy[1] >= clip.y + clip.h) max_xy[1] = clip.y + clip.h - 1;
if (min_xy[1] >= clip.y + clip.h) return;
if (min_xy[1] < clip.y) min_xy[1] = clip.y;
if (min_xy[1] < 0) min_xy[1] = 0;
if (max_xy[1] >= dst_surface->h) max_xy[1] = dst_surface->h - 1;
SDL_LockSurface( dst_surface );
SDL_LockSurface( image_surface );
alpha &= 0xff;
int pitch = image_surface->pitch / sizeof(ONSBuf);
int cx2 = affine_pos.x*2 + affine_pos.w; // center x multiplied by 2
int cy2 = affine_pos.y*2 + affine_pos.h; // center y multiplied by 2
int src_rect[2][2]; // clipped source image bounding box
src_rect[0][0] = affine_pos.x;
src_rect[0][1] = affine_pos.y;
src_rect[1][0] = affine_pos.x + affine_pos.w - 1;
src_rect[1][1] = affine_pos.y + affine_pos.h - 1;
if (src_rect[0][0] < 0) src_rect[0][0] = 0;
if (src_rect[0][1] < 0) src_rect[0][1] = 0;
if (src_rect[1][0] >= pos.w) src_rect[1][0] = pos.w - 1;
if (src_rect[1][1] >= pos.h) src_rect[1][1] = pos.h - 1;
// set pixel by inverse-projection with raster scan
struct Blender {
int(*corner_xy)[2], *min_xy, *max_xy;
int(*inv_mat)[2];
ONSBuf *pixels;
int cellw, blending_mode;
SDL_Surface *dst_surface;
int alpha, pitch, dst_x, dst_y, cx2, cy2;
int(*src_rect)[2];
void operator()(const int y) const {
// calculate the start and end point for each raster scan
int raster_min = min_xy[0], raster_max = max_xy[0];
for (int i = 0; i < 4; i++) {
int i2 = (i + 1) & 3; // = (i+1)%4
if (corner_xy[i][1] == corner_xy[i2][1]) continue;
int x = (corner_xy[i2][0] - corner_xy[i][0])*(y - corner_xy[i][1]) / (corner_xy[i2][1] - corner_xy[i][1]) + corner_xy[i][0];
if (corner_xy[i2][1] - corner_xy[i][1] > 0) {
if (raster_min < x) raster_min = x;
}
else {
if (raster_max > x) raster_max = x;
}
}
if (raster_min < 0) raster_min = 0;
if (raster_max >= dst_surface->w) raster_max = dst_surface->w - 1;
ONSBuf *dst_buffer = (ONSBuf *)dst_surface->pixels + dst_surface->w * y + raster_min;
// inverse-projection
int x_offset2 = (inv_mat[0][1] * (y - dst_y) >> 9) + cx2;
int y_offset2 = (inv_mat[1][1] * (y - dst_y) >> 9) + cy2;
for (int x = raster_min - dst_x; x <= raster_max - dst_x; x++, dst_buffer++) {
int x2 = ((inv_mat[0][0] * x >> 9) + x_offset2) >> 1;
int y2 = ((inv_mat[1][0] * x >> 9) + y_offset2) >> 1;
if (x2 < src_rect[0][0] || x2 >= src_rect[1][0] ||
y2 < src_rect[0][1] || y2 >= src_rect[1][1]) continue;
ONSBuf *src_buffer = pixels + pitch * y2 + x2 + cellw;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)src_buffer + 3;
#else
unsigned char *alphap = (unsigned char *)src_buffer;
#endif
if (blending_mode == BLEND_NORMAL)
BLEND_PIXEL();
else if (blending_mode == BLEND_ADD)
ADDBLEND_PIXEL();
else
SUBBLEND_PIXEL();
}
}
} blender = {corner_xy, min_xy, max_xy, inv_mat, (ONSBuf*)image_surface->pixels, pos.w*current_cell, blending_mode, dst_surface, alpha, pitch, dst_x, dst_y, cx2, cy2, src_rect};
#if defined(USE_PARALLEL) || defined(USE_OMP_PARALLEL)
parallel::For(min_xy[1], max_xy[1] + 1, 1, blender, (max_xy[1] - min_xy[1] + 1) * (max_xy[0] + 1 - min_xy[0]) * 4);
#else
for (int y = min_xy[1]; y <= max_xy[1]; y++) blender(y);
#endif
// unlock surface
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( dst_surface );
}
#define BLEND_TEXT_ALPHA()\
{\
Uint32 mask2 = *src_buffer; \
if (mask2 == 255){ \
*dst_buffer = src_color; \
} \
else if (mask2 != 0){ \
Uint32 alpha = *dst_buffer >> 24; \
Uint32 mask1 = ((0xff ^ mask2)*alpha) >> 8; \
alpha = inv_alpha_lut[ mask1+mask2 ]; \
Uint32 mask_rb = ((*dst_buffer & 0xff00ff) * mask1 + \
src_color1 * mask2); \
mask_rb = (((mask_rb >> 16) * alpha) & 0x00ff0000) | \
(((mask_rb & 0xffff) * alpha >> 16) & 0xff); \
Uint32 mask_g = (((*dst_buffer & 0x00ff00) * mask1 + \
src_color2 * mask2) * alpha >> 16) & 0x00ff00; \
*dst_buffer = mask_rb | mask_g | ((mask1+mask2) << 24); \
} \
}
// Originally, the above looks like this.
// Uint32 alpha = *dst_buffer >> 24;
// Uint32 mask1 = ((0xff ^ mask2)*alpha) >> 8;
// alpha = 0xff ^ ((0xff ^ alpha)*(0xff ^ mask2) >> 8);
// Uint32 mask_rb = ((*dst_buffer & 0xff00ff) * mask1 +
// src_color1 * mask2);
// mask_rb = ((mask_rb / alpha) & 0x00ff0000) |
// (((mask_rb & 0xffff) / alpha) & 0xff);
// Uint32 mask_g = (((*dst_buffer & 0x00ff00) * mask1 +
// src_color2 * mask2) / alpha) & 0x00ff00;
// *dst_buffer = mask_rb | mask_g | (alpha << 24);
// used to draw characters on text_surface
// Alpha = 1 - (1-Da)(1-Sa)
// Color = (DaSaSc + Da(1-Sa)Dc + Sa(1-Da)Sc)/A
void AnimationInfo::blendText( SDL_Surface *surface, int dst_x, int dst_y, SDL_Color &color,
SDL_Rect *clip, bool rotate_flag )
{
if (image_surface == NULL || surface == NULL) return;
SDL_Rect dst_rect;
dst_rect.x = dst_x;
dst_rect.y = dst_y;
dst_rect.w = surface->w;
dst_rect.h = surface->h;
if (rotate_flag){
dst_rect.w = surface->h;
dst_rect.h = surface->w;
}
SDL_Rect src_rect = {0, 0, 0, 0};
SDL_Rect clipped_rect;
/* ---------------------------------------- */
/* 1st clipping */
if ( clip ){
if ( doClipping( &dst_rect, clip, &clipped_rect ) ) return;
src_rect.x += clipped_rect.x;
src_rect.y += clipped_rect.y;
}
/* ---------------------------------------- */
/* 2nd clipping */
SDL_Rect clip_rect;
clip_rect.x = clip_rect.y = 0;
clip_rect.w = image_surface->w;
clip_rect.h = image_surface->h;
if ( doClipping( &dst_rect, &clip_rect, &clipped_rect ) ) return;
src_rect.x += clipped_rect.x;
src_rect.y += clipped_rect.y;
/* ---------------------------------------- */
SDL_LockSurface( surface );
SDL_LockSurface( image_surface );
SDL_PixelFormat *fmt = image_surface->format;
int pitch = image_surface->pitch / sizeof(ONSBuf);
Uint32 src_color1 = (((color.r >> fmt->Rloss) << fmt->Rshift) |
((color.b >> fmt->Bloss) << fmt->Bshift));
Uint32 src_color2 = ((color.g >> fmt->Gloss) << fmt->Gshift);
Uint32 src_color = src_color1 | src_color2 | fmt->Amask;
ONSBuf *dst_buffer = (ONSBuf *)image_surface->pixels + pitch * dst_rect.y + image_surface->w*current_cell/num_of_cells + dst_rect.x;
if (!rotate_flag){
unsigned char *src_buffer = (unsigned char*)surface->pixels +
surface->pitch*src_rect.y + src_rect.x;
for (int i=dst_rect.h ; i!=0 ; i--){
for (int j=dst_rect.w ; j!=0 ; j--){
BLEND_TEXT_ALPHA();
src_buffer++;
dst_buffer++;
}
dst_buffer += pitch - dst_rect.w;
src_buffer += surface->pitch - dst_rect.w;
}
}
else{
for (int i=0 ; i<dst_rect.h ; i++){
unsigned char *src_buffer = (unsigned char*)surface->pixels +
surface->pitch*(surface->h - src_rect.x - 1) + src_rect.y + i;
for (int j=dst_rect.w ; j!=0 ; j--){
BLEND_TEXT_ALPHA();
src_buffer -= surface->pitch;
dst_buffer++;
}
dst_buffer += pitch - dst_rect.w;
}
}
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( surface );
}
void AnimationInfo::calcAffineMatrix()
{
// calculate forward matrix
// |mat[0][0] mat[0][1]|
// |mat[1][0] mat[1][1]|
int cos_i = 1024, sin_i = 0;
if (rot != 0){
cos_i = (int)(1024.0 * cos(-M_PI*rot/180));
sin_i = (int)(1024.0 * sin(-M_PI*rot/180));
}
mat[0][0] = cos_i*scale_x/100;
mat[0][1] = -sin_i*scale_y/100;
mat[1][0] = sin_i*scale_x/100;
mat[1][1] = cos_i*scale_y/100;
// calculate bounding box
int min_xy[2] = { 0, 0 }, max_xy[2] = { 0, 0 };
for (int i=0 ; i<4 ; i++){
int c_x = (i<2)?(-affine_pos.w/2):(affine_pos.w/2);
int c_y = ((i+1)&2)?(affine_pos.h/2):(-affine_pos.h/2);
if (scale_x < 0) c_x = -c_x;
if (scale_y < 0) c_y = -c_y;
corner_xy[i][0] = (mat[0][0] * c_x + mat[0][1] * c_y) / 1024 + pos.x;
corner_xy[i][1] = (mat[1][0] * c_x + mat[1][1] * c_y) / 1024 + pos.y;
if (i==0 || min_xy[0] > corner_xy[i][0]) min_xy[0] = corner_xy[i][0];
if (i==0 || max_xy[0] < corner_xy[i][0]) max_xy[0] = corner_xy[i][0];
if (i==0 || min_xy[1] > corner_xy[i][1]) min_xy[1] = corner_xy[i][1];
if (i==0 || max_xy[1] < corner_xy[i][1]) max_xy[1] = corner_xy[i][1];
}
bounding_rect.x = min_xy[0];
bounding_rect.y = min_xy[1];
bounding_rect.w = max_xy[0]-min_xy[0]+1;
bounding_rect.h = max_xy[1]-min_xy[1]+1;
// calculate inverse matrix
int denom = scale_x*scale_y;
if (denom == 0) return;
inv_mat[0][0] = mat[1][1] * 10000 / denom;
inv_mat[0][1] = -mat[0][1] * 10000 / denom;
inv_mat[1][0] = -mat[1][0] * 10000 / denom;
inv_mat[1][1] = mat[0][0] * 10000 / denom;
}
SDL_Surface *AnimationInfo::allocSurface( int w, int h, Uint32 texture_format )
{
SDL_Surface *surface;
if (texture_format == SDL_PIXELFORMAT_RGB565)
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 16, 0xf800, 0x07e0, 0x001f, 0);
else if (texture_format == SDL_PIXELFORMAT_ABGR8888)
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, 0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000);
else // texture_format == SDL_PIXELFORMAT_ARGB8888
surface = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000);
#if !SDL_VERSION_ATLEAST(2,0,0)
SDL_SetAlpha(surface, 0, SDL_ALPHA_OPAQUE);
#endif
#if defined(USE_SDL_RENDERER) || defined(ANDROID)
SDL_SetSurfaceBlendMode(surface, SDL_BLENDMODE_NONE);
#endif
return surface;
}
SDL_Surface *AnimationInfo::alloc32bitSurface( int w, int h, Uint32 texture_format )
{
if (texture_format == SDL_PIXELFORMAT_RGB565)
return allocSurface(w, h, SDL_PIXELFORMAT_ARGB8888);
else
return allocSurface(w, h, texture_format);
}
void AnimationInfo::allocImage( int w, int h, Uint32 texture_format )
{
if (!image_surface ||
image_surface->w != w ||
image_surface->h != h){
deleteSurface(false);
this->texture_format = texture_format;
SDL_mutexP(mutex);
image_surface = allocSurface( w, h, texture_format );
SDL_mutexV(mutex);
}
abs_flag = true;
pos.w = w / num_of_cells;
pos.h = h;
affine_pos.x = 0;
affine_pos.y = 0;
affine_pos.w = pos.w;
affine_pos.h = pos.h;
}
void AnimationInfo::copySurface( SDL_Surface *surface, SDL_Rect *src_rect, SDL_Rect *dst_rect )
{
if (!image_surface || !surface) return;
SDL_Rect _dst_rect = {0, 0};
if (dst_rect) _dst_rect = *dst_rect;
SDL_Rect _src_rect;
_src_rect.x = _src_rect.y = 0;
_src_rect.w = surface->w;
_src_rect.h = surface->h;
if (src_rect) _src_rect = *src_rect;
if (_src_rect.x >= surface->w) return;
if (_src_rect.y >= surface->h) return;
if (_src_rect.x+_src_rect.w >= surface->w)
_src_rect.w = surface->w - _src_rect.x;
if (_src_rect.y+_src_rect.h >= surface->h)
_src_rect.h = surface->h - _src_rect.y;
if (_dst_rect.x+_src_rect.w > image_surface->w)
_src_rect.w = image_surface->w - _dst_rect.x;
if (_dst_rect.y+_src_rect.h > image_surface->h)
_src_rect.h = image_surface->h - _dst_rect.y;
SDL_LockSurface( surface );
SDL_LockSurface( image_surface );
int i;
for (i=0 ; i<_src_rect.h ; i++)
memcpy( (ONSBuf*)((unsigned char*)image_surface->pixels + image_surface->pitch * (_dst_rect.y+i)) + _dst_rect.x,
(ONSBuf*)((unsigned char*)surface->pixels + surface->pitch * (_src_rect.y+i)) + _src_rect.x,
_src_rect.w*sizeof(ONSBuf) );
SDL_UnlockSurface( image_surface );
SDL_UnlockSurface( surface );
}
void AnimationInfo::fill( Uint8 r, Uint8 g, Uint8 b, Uint8 a )
{
if (!image_surface) return;
SDL_LockSurface( image_surface );
SDL_PixelFormat *fmt = image_surface->format;
Uint32 rgb = (((r >> fmt->Rloss) << fmt->Rshift) |
((g >> fmt->Gloss) << fmt->Gshift) |
((b >> fmt->Bloss) << fmt->Bshift) |
((a >> fmt->Aloss) << fmt->Ashift));
int pitch = image_surface->pitch / sizeof(ONSBuf);
for (int i=0 ; i<image_surface->h ; i++){
ONSBuf *dst_buffer = (ONSBuf *)image_surface->pixels + pitch*i;
for (int j=0 ; j<image_surface->w ; j++){
*dst_buffer++ = rgb;
}
}
SDL_UnlockSurface( image_surface );
}
SDL_Surface *AnimationInfo::setupImageAlpha( SDL_Surface *surface, SDL_Surface *surface_m, bool has_alpha )
{
if (surface == NULL) return NULL;
SDL_LockSurface( surface );
Uint32 *buffer = (Uint32 *)surface->pixels;
SDL_PixelFormat *fmt = surface->format;
int w = surface->w;
int h = surface->h;
int w2 = w / num_of_cells;
orig_pos.w = w;
orig_pos.h = h;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
unsigned char *alphap = (unsigned char *)buffer + 3;
#else
unsigned char *alphap = (unsigned char *)buffer;
#endif
Uint32 ref_color = 0;
if ( trans_mode == TRANS_TOPLEFT ){
ref_color = *buffer;
}
else if ( trans_mode == TRANS_TOPRIGHT ){
ref_color = *(buffer + surface->w - 1);
}
else if ( trans_mode == TRANS_DIRECT ) {
ref_color =
direct_color[0] << fmt->Rshift |
direct_color[1] << fmt->Gshift |
direct_color[2] << fmt->Bshift;
}
ref_color &= 0xffffff;
int i, j, c;
if ( trans_mode == TRANS_ALPHA && !has_alpha ){
const int w22 = w2/2;
const int w3 = w22 * num_of_cells;
orig_pos.w = w3;
SDL_PixelFormat *fmt = surface->format;
SDL_Surface *surface2 = SDL_CreateRGBSurface( SDL_SWSURFACE, w3, h,
fmt->BitsPerPixel, fmt->Rmask, fmt->Gmask, fmt->Bmask, fmt->Amask );
SDL_LockSurface( surface2 );
Uint32 *buffer2 = (Uint32 *)surface2->pixels;
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
alphap = (unsigned char *)buffer2 + 3;
#else
alphap = (unsigned char *)buffer2;
#endif
for (i=h ; i!=0 ; i--){
for (c=num_of_cells ; c!=0 ; c--){
for (j=w22 ; j!=0 ; j--, buffer++, alphap+=4){
*buffer2++ = *buffer;
*alphap = (*(buffer + w22) & 0xff) ^ 0xff;
}
buffer += (w2 - w22);
}
buffer += surface->w - w2 *num_of_cells;
buffer2 += surface2->w - w22*num_of_cells;
alphap += (surface2->w - w22*num_of_cells)*4;
}
SDL_UnlockSurface( surface );
SDL_FreeSurface( surface );
surface = surface2;
}
else if ( trans_mode == TRANS_MASK ){
if (surface_m){
SDL_LockSurface( surface_m );
const int mw = surface_m->w;
const int mwh = surface_m->w * surface_m->h;
int i2 = 0;
for (i=h ; i!=0 ; i--){