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libcaca
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* src/graphics.c: more optimisations in the exporters

tags/v0.99.beta14
Sam Hocevar sam 19 years ago
parent
53c587e556
commit
0ab0efe335
1 changed files with 168 additions and 181 deletions
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  1. +168
    -181
      src/graphics.c

+ 168
- 181
src/graphics.c View File

@@ -265,7 +265,7 @@ float gl_font_width, gl_font_height;
float gl_incx, gl_incy;
int id[94];
unsigned char gl_resized=0, gl_bit=0;
#endif
#endif


static char *_caca_empty_line;
@@ -319,12 +319,12 @@ static void gl_handle_reshape (int w, int h)

gl_new_width = w;
gl_new_height = h;
gl_resized = 1;
}
else
gl_bit=1;
}
#endif

@@ -983,7 +983,7 @@ int _caca_init_graphics(void)
if(getenv("CACA_GEOMETRY") && *(getenv("CACA_GEOMETRY")))
sscanf(getenv("CACA_GEOMETRY"),
"%ux%u", &_caca_width, &_caca_height);
if(!_caca_width)
_caca_width = 80;
if(!_caca_height)
@@ -993,16 +993,16 @@ int _caca_init_graphics(void)
gl_font_height = 15;

gl_width = _caca_width*gl_font_width;
gl_height = _caca_height*gl_font_height;
gl_height = _caca_height*gl_font_height;

glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutInitWindowSize(gl_width, gl_height);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutInitWindowSize(gl_width, gl_height);
gl_window = glutCreateWindow("caca for GL");

gluOrtho2D(0,gl_width, gl_height, 0);

glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_DEPTH_TEST);

glutKeyboardFunc(gl_handle_keyboard);
glutSpecialFunc(gl_handle_special_key);
@@ -1028,10 +1028,10 @@ int _caca_init_graphics(void)

memset(empty, 255, 16*16*4);
glEnable(GL_TEXTURE_2D);
for(i=0;i<94;i++)
{
glGenTextures(1,&id[i]);
glGenTextures(1,&id[i]);
glBindTexture(GL_TEXTURE_2D, id[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
@@ -1041,19 +1041,19 @@ int _caca_init_graphics(void)
}
for(i=0;i<94;i++)
{
glDisable(GL_TEXTURE_2D);
glClear(GL_COLOR_BUFFER_BIT);

glColor3f(1,1,1);
glRasterPos2f(0,15);
glutBitmapCharacter(GLUT_BITMAP_9_BY_15,i+32);
glutBitmapCharacter(GLUT_BITMAP_9_BY_15,i+32);

glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D,id[i]);
glBindTexture(GL_TEXTURE_2D,id[i]);
glCopyTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 0, gl_height-16, 16,16, 0);
glutMainLoopEvent();
glutPostRedisplay();
}
@@ -1065,7 +1065,7 @@ int _caca_init_graphics(void)
{
if(getenv("CACA_GEOMETRY") && *(getenv("CACA_GEOMETRY")))
sscanf(getenv("CACA_GEOMETRY"),
"%ux%u", &_caca_width, &_caca_height);
"%ux%u", &_caca_width, &_caca_height);
if(!_caca_width)
_caca_width = 80;
if(!_caca_height)
@@ -1455,10 +1455,10 @@ void caca_refresh(void)
if(_caca_driver == CACA_DRIVER_GL)
{
unsigned int x, y, offsetx, offsety;

glClear(GL_COLOR_BUFFER_BIT);
offsety=0;
for(y=0;y<gl_height;y+=gl_font_height)
{
@@ -1473,7 +1473,7 @@ void caca_refresh(void)
br = ((gl_bg_palette[offset]&0x00FF0000)>>16)/255.0f;
bg = ((gl_bg_palette[offset]&0x0000FF00)>>8)/255.0f;
bb = ((gl_bg_palette[offset]&0x000000FF))/255.0f;
glDisable(GL_TEXTURE_2D);
glColor3f(br, bg, bb);
glBegin(GL_QUADS);
@@ -1482,10 +1482,10 @@ void caca_refresh(void)
glVertex2f(x+gl_font_width,y+gl_font_height);
glVertex2f(x,y+gl_font_height);
glEnd();

offsetx++;
}
}

offsety++;
}
@@ -1496,7 +1496,7 @@ void caca_refresh(void)
glEnable(GL_BLEND);
glEnable(GL_TEXTURE_2D);
glBlendFunc(GL_ONE, GL_ONE);
offsety=0;
for(y=0;y<gl_height;y+=gl_font_height)
{
@@ -1506,8 +1506,8 @@ void caca_refresh(void)
uint8_t *attr = cache_attr + offsetx + offsety * _caca_width;
unsigned char *chr = cache_char + offsetx + offsety * _caca_width;
float fr, fg, fb;
fr = ((gl_bg_palette[attr[0] & 0xf]&0x00FF0000)>>16)/255.0f;
fg = ((gl_bg_palette[attr[0] & 0xf]&0x0000FF00)>>8)/255.0f;
fb = ((gl_bg_palette[attr[0] & 0xf]&0x000000FF))/255.0f;
@@ -1515,7 +1515,7 @@ void caca_refresh(void)
if(chr[0] != ' ')
{
glBindTexture(GL_TEXTURE_2D, id[chr[0]-32]);
glColor3f(fr, fg, fb);
glBegin(GL_QUADS);
glTexCoord2f(0,1);
@@ -1526,7 +1526,7 @@ void caca_refresh(void)
glVertex2f(x+gl_font_width,y+gl_font_height);
glTexCoord2f(0,0);
glVertex2f(x,y+gl_font_height);
glEnd();
glEnd();
}
offsetx++;
}
@@ -1655,16 +1655,16 @@ static void caca_handle_resize(void)
{
gl_width = gl_new_width;
gl_height = gl_new_height;
_caca_width = gl_width/gl_font_width;
_caca_height = (gl_height/gl_font_height)+1;
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();
glViewport(0,0,gl_width, gl_height);
gluOrtho2D(0, gl_width, gl_height, 0);
gluOrtho2D(0, gl_width, gl_height, 0);
glMatrixMode(GL_MODELVIEW);

}
@@ -1770,37 +1770,20 @@ static RETSIGTYPE sigwinch_handler(int sig)

/* Exporters */


/* HTML */
static int const html_palette[] =
{
0,
0x007,
0x070,
0x077,
0x700,
0x707,
0x770,
0x777,
0,
0x00F,
0x0F0,
0x0FF,
0xF00,
0xF0F,
0xFF0,
0xFFF,

};

/** \brief Generate HTML representation of current image.
*
* This function generates and returns the HTML representation of
* This function generates and returns the HTML representation of
* the current image.
*
*/
char* caca_get_html(void)
{
static int const palette[] =
{
0x000, 0x008, 0x080, 0x088, 0x800, 0x808, 0x880, 0x888,
0x444, 0x44f, 0x4f4, 0x4ff, 0xf44, 0xf4f, 0xff4, 0xfff,
};
char *buffer, *cur;
unsigned int x, y, len;

@@ -1819,7 +1802,7 @@ char* caca_get_html(void)
for(x = 0; x < 0x100; x++)
{
cur += sprintf(cur, ".b%02x { color:#%03x; background-color:#%03x; }\n",
x, html_palette[x & 0xf ], html_palette[x >> 4]);
x, palette[x & 0xf ], palette[x >> 4]);
}
cur += sprintf(cur, "</style>\n</head>\n<body>\n");

@@ -1828,21 +1811,21 @@ char* caca_get_html(void)

for(y = 0; y < _caca_height; y++)
{
uint8_t *lineattr = cache_attr + y * _caca_width;
uint8_t *linechar = cache_char + y * _caca_width;

for(x = 0; x < _caca_width; x += len)
{
uint8_t *cur_attr = cache_attr + y * _caca_width;
uint8_t *cur_char = cache_char + y * _caca_width;

cur += sprintf(cur, "<span class='b%02x'>", cur_attr[x]);
cur += sprintf(cur, "<span class='b%02x'>", lineattr[x]);

for(len = 0;
x + len < _caca_width && cur_attr[x + len] == cur_attr[x];
for(len = 0;
x + len < _caca_width && lineattr[x + len] == lineattr[x];
len++)
{
if(cur_char[x + len] == ' ')
if(linechar[x + len] == ' ')
cur += sprintf(cur, "&nbsp;");
else
cur += sprintf(cur, "%c", cur_char[x + len]);
cur += sprintf(cur, "%c", linechar[x + len]);
}
cur += sprintf(cur, "</span>");
}
@@ -1860,154 +1843,158 @@ char* caca_get_html(void)

/** \brief Generate HTML3 representation of current image.
*
* This function generates and returns the HTML3 representation of
* This function generates and returns the HTML3 representation of
* the current image. It is way bigger than caca_get_html(), but
* permits viewing in old browsers (or limited ones such as links)
* Won't work under gecko (mozilla rendering engine) unless you set
* Won't work under gecko (mozilla rendering engine) unless you set
* a correct header.
*/
char* caca_get_html3(void)
{
char *buffer, *cur;
unsigned int x,y;

/* 13000 -> css palette
40 -> max size used for a pixel (plus 10, never know)*/
static int const palette[] =
{
0x000000, 0x000088, 0x008800, 0x008888,
0x880000, 0x880088, 0x888800, 0x888888,
0x444444, 0x4444ff, 0x44ff44, 0x44ffff,
0xff4444, 0xff44ff, 0xffff44, 0xffffff,
};
char *buffer, *cur;
unsigned int x, y, len;

buffer = malloc((13000 + ((_caca_width*_caca_height)*40))*sizeof(char));
cur = buffer;
/* 13000 -> css palette
* 40 -> max size used for a pixel (plus 10, never know) */
buffer = malloc((13000 + ((_caca_width*_caca_height)*40))*sizeof(char));
cur = buffer;

/* Table */
cur += sprintf(cur, "<table cols='%d' cellpadding='0' cellspacing='0'>\n", caca_get_height());
/* Table */
cur += sprintf(cur, "<table cols='%d' cellpadding='0' cellspacing='0'>\n",
_caca_height);

for(y=0;y<_caca_height;y++)
for(y = 0; y < _caca_height; y++)
{
cur += sprintf(cur, "<tr>");
for(x=0;x<_caca_width;x++)
{
int len;
int i;
uint8_t *attr = cache_attr + x + y * _caca_width;

/* Use colspan option to factorize cells with same attributes
(see below) */
len=1;
while(x + len < _caca_width
&& (attr[len]>>4) == (attr[0]>>4) &&
(attr[len]&0x0f) == (attr[0]&0x0f))
len++;
if(len==1)
{
cur += sprintf(cur,
"<td bgcolor=#%03X ><font color=#%03X>%c</font></td>",
html_palette[cache_attr[x+y*caca_get_width()]>>4],
html_palette[cache_attr[x+y*caca_get_width()]&0x0f],
cache_char[x+y*caca_get_width()]);
}
else
{
cur += sprintf(cur,
"<td bgcolor=#%03X colspan=%d><font color=#%03X>",
html_palette[cache_attr[x+y*caca_get_width()]>> 4],
len+1,
html_palette[cache_attr[x+y*caca_get_width()]&0x0f]);
for(i=0;i<len;i++)
{
if(cache_char[x+y*caca_get_width()]!=' ')
cur += sprintf(cur, "%c", cache_char[x+y*caca_get_width()]);
else
cur += sprintf(cur, "&nbsp;");
x++;
}
cur += sprintf(cur, "</font></td>");
}

}
cur += sprintf(cur, "</tr>\n");
}
uint8_t *lineattr = cache_attr + y * _caca_width;
uint8_t *linechar = cache_char + y * _caca_width;

/* Footer */
cur += sprintf(cur, "</table>\n");
cur += sprintf(cur, "<tr>");

/* Crop to really used size */
buffer = realloc(buffer, (strlen(buffer)+1) * sizeof(char));
for(x = 0; x < _caca_width; x += len)
{
int i;

return buffer;
}
/* Use colspan option to factorize cells with same attributes
* (see below) */
len = 1;
while(x + len < _caca_width && lineattr[x + len] == lineattr[x])
len++;

cur += sprintf(cur, "<td bgcolor=#%06x", palette[lineattr[x] >> 4]);

static int const irc_palette[] =
{
/* Dark */
1, 2, 3, 10, 5, 6, 7, 14,
/* Light */
1, 12, 9, 11, 4, 13, 8, 16,
};
if(len > 1)
cur += sprintf(cur, " colspan=%d", len);

cur += sprintf(cur, "><font color=#%06x>",
palette[lineattr[x] & 0x0f]);

for(i = 0; i < len; i++)
{
if(linechar[x + i] == ' ')
cur += sprintf(cur, "&nbsp;");
else
cur += sprintf(cur, "%c", linechar[x + i]);
}

cur += sprintf(cur, "</font></td>");
}
cur += sprintf(cur, "</tr>\n");
}

/* Footer */
cur += sprintf(cur, "</table>\n");

/* Crop to really used size */
buffer = realloc(buffer, (strlen(buffer) + 1) * sizeof(char));

return buffer;
}

/** \brief Generate IRC representation of current image.
*
* This function generates and returns an IRC representation of
* This function generates and returns an IRC representation of
* the current image.
* This is XChat-like format, %Cf,b with f the foreground color,
* and b the background color.
*
*/
char* caca_get_irc(void)
{
char *buffer;
unsigned int x, y;
/* 15 bytes assumed for max length per pixel */
buffer = malloc(((_caca_width*_caca_height*15)+1)*sizeof(char));
static int const palette[] =
{
1, 2, 3, 10, 5, 6, 7, 15, /* Dark */
14, 12, 9, 11, 4, 13, 8, 0, /* Light */
};

sprintf(buffer, "%%O");
char *buffer, *cur;
unsigned int x, y;

/* 11 bytes assumed for max length per pixel. Worst case scenario:
* ^Cxx,yy 6 bytes
* ^B^B 2 bytes
* c 1 byte
* \r\n 2 bytes
* In real life, the average bytes per pixel value will be around 5.
*/
buffer = malloc((2 + (_caca_width * _caca_height * 11)) * sizeof(char));
cur = buffer;

for(y = 0; y < _caca_height; y++)
{
for(x = 0; x < _caca_width; x++)
*cur++ = '\x0f';

for(y = 0; y < _caca_height; y++)
{
uint8_t *lineattr = cache_attr + y * _caca_width;
uint8_t *linechar = cache_char + y * _caca_width;

uint8_t prevfg = -1;
uint8_t prevbg = -1;

for(x = 0; x < _caca_width; x++)
{
if(cache_char[x+y*caca_get_width()] == ' ')
{
sprintf(buffer,
"%s%%C%d,%d%c", buffer,
irc_palette[cache_attr[x+y*caca_get_width()]>>4],
irc_palette[cache_attr[x+y*caca_get_width()]>>4],
'#');
}
else if(cache_char[x+y*caca_get_width()] == '%')
uint8_t fg = palette[lineattr[x] & 0x0f];
uint8_t bg = palette[lineattr[x] >> 4];
uint8_t c = linechar[x];

if(bg == prevbg)
{
sprintf(buffer,
"%s%%C%d,%d%%%%", buffer,
irc_palette[cache_attr[x+y*caca_get_width()]&0x0f],
irc_palette[cache_attr[x+y*caca_get_width()]>> 4]);
if(fg == prevfg)
; /* Same fg/bg, do nothing */
else if(c == ' ')
fg = prevfg; /* Hackety hack */
else
{
cur += sprintf(cur, "\x03%d", fg);
if(c >= '0' && c <= '9')
cur += sprintf(cur, "\x02\x02");
}
}
else if(cache_char[x+y*caca_get_width()]>='0' && cache_char[x+y*caca_get_width()]<='9')
else
{
sprintf(buffer,
"%s%%C%d,%d%%B%%B%c", buffer,
irc_palette[cache_attr[x+y*caca_get_width()]&0x0f],
irc_palette[cache_attr[x+y*caca_get_width()]>> 4],
cache_char[x+y*caca_get_width()]);
}
else
{
sprintf(buffer,
"%s%%C%d,%d%c", buffer,
irc_palette[cache_attr[x+y*caca_get_width()]&0x0f],
irc_palette[cache_attr[x+y*caca_get_width()]>> 4],
cache_char[x+y*caca_get_width()]);
if(fg == prevfg)
cur += sprintf(cur, "\x03,%d", bg);
else
cur += sprintf(cur, "\x03%d,%d", fg, bg);

if(c >= '0' && c <= '9')
cur += sprintf(cur, "\x02\x02");
}
*cur++ = c;
prevfg = fg;
prevbg = bg;
}
sprintf(buffer, "%s\n", buffer);
}
/* Crop to really used size */
buffer = realloc(buffer, (strlen(buffer)+1) * sizeof(char));
return buffer;
*cur++ = '\r';
*cur++ = '\n';
}

*cur++ = '\x0f';

/* Crop to really used size */
buffer = realloc(buffer, (strlen(buffer) + 1) * sizeof(char));

return buffer;
}


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