-/*******************************************************************************
+/*****************************************************************************
* video_text.c : text manipulation functions
- * (c)1999 VideoLAN
- *******************************************************************************/
+ *****************************************************************************
+ * Copyright (C) 1999, 2000 VideoLAN
+ *
+ * Authors:
+ *
+ * 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, USA.
+ *****************************************************************************/
-/*******************************************************************************
+/*****************************************************************************
* Preamble
- *******************************************************************************/
-#include <errno.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
+ *****************************************************************************/
+#include "defs.h"
+
+#include <errno.h> /* errno */
+#include <stdlib.h> /* free() */
+#include <string.h> /* strerror() */
+#include <fcntl.h> /* open() */
+#include <unistd.h> /* read(), close() */
-#include "common.h"
#include "config.h"
+#include "common.h"
#include "video_text.h"
+
#include "intf_msg.h"
-/*******************************************************************************
+/*****************************************************************************
* vout_font_t: bitmap font
- *******************************************************************************
- * This structure is used when the system doesn't provide a convenient function
+ *****************************************************************************
+ * This structure is used when the system doesn't provide a convenient function
* to print simple characters in a buffer.
* VOUT_FIXED_FONTs are stored in raw mode, character after character, with a
- * first array of characters followed by a second array of borders masks.
+ * first array of characters followed by a second array of borders masks.
* Therefore the border masks can't be complete if the font has pixels on the
* border.
- *******************************************************************************/
+ *****************************************************************************/
typedef struct vout_font_s
{
int i_type; /* font type */
/* Font types */
#define VOUT_FIXED_FONT 0 /* simple fixed font */
-/*******************************************************************************
+/*****************************************************************************
* vout_put_byte_t: PutByte function
- *******************************************************************************
- * These functions will transform masks in a set of pixels. For each pixel,
+ *****************************************************************************
+ * These functions will transform masks in a set of pixels. For each pixel,
* character, then border and background masks are tested, and the first
* encountered color is set.
- *******************************************************************************/
-typedef void (vout_put_byte_t)( void *p_pic, int i_byte, int i_char, int i_border,
+ *****************************************************************************/
+typedef void (vout_put_byte_t)( void *p_pic, int i_byte, int i_char, int i_border,
int i_bg, u32 i_char_color, u32 i_border_color, u32 i_bg_color );
-/*******************************************************************************
+/*****************************************************************************
* Macros
- *******************************************************************************/
+ *****************************************************************************/
/* PUT_BYTE_MASK: put pixels from a byte-wide mask. It uses a branching tree
- * to optimize the number of tests. It is used in the PutByte functions.
+ * to optimize the number of tests. It is used in the PutByte functions.
* This macro works for 1, 2 and 4 Bpp. */
#define PUT_BYTE_MASK( i_mask, i_mask_color ) \
if( i_mask & 0xf0 ) /* one from 1111 */ \
}
/*****************************************************************************
- * Local prototypes
+ * Local prototypes
*****************************************************************************/
static void PutByte8 ( u8 *p_pic, int i_byte, int i_char, int i_border,
int i_bg, u32 i_char_color, u32 i_border_color,
int i_file; /* source file */
byte_t pi_buffer[2]; /* file buffer */
vout_font_t * p_font; /* the font itself */
-
+
/* Open file */
i_file = open( psz_name, O_RDONLY );
if( i_file == -1 )
{
- intf_ErrMsg("error: can't open file '%s' (%s)\n", psz_name, strerror(errno));
- return( NULL );
+ intf_DbgMsg("vout: can't open file '%s' (%s)\n", psz_name, strerror(errno));
+ return( NULL );
}
/* Read magick number */
if( read( i_file, pi_buffer, 2 ) != 2 )
{
- intf_ErrMsg("error: unexpected end of file '%s'\n", psz_name );
- close( i_file );
- return( NULL );
+ intf_ErrMsg("vout error: unexpected end of file '%s'\n", psz_name );
+ close( i_file );
+ return( NULL );
}
/* Allocate font descriptor */
p_font = malloc( sizeof( vout_font_t ) );
if( p_font == NULL )
{
- intf_ErrMsg("error: %s\n", strerror(ENOMEM));
+ intf_ErrMsg("vout error: %s\n", strerror(ENOMEM));
close( i_file );
- return( NULL );
+ return( NULL );
}
-
+
/* Read file */
switch( ((u16)pi_buffer[0] << 8) | pi_buffer[1] )
{
case 0x3604: /* .psf file */
- /*
+ /*
* PSF font: simple fixed font. Only the first 256 characters are read.
- * Those fonts are always 1 byte width, and 256 or 512 characters long.
+ * Those fonts are always 1 byte wide, and 256 or 512 characters long.
*/
/* Read font header - two bytes indicate the font properties */
if( read( i_file, pi_buffer, 2 ) != 2)
{
intf_ErrMsg("error: unexpected end of file '%s'\n", psz_name );
- free( p_font );
- close( i_file );
- return( NULL );
+ free( p_font );
+ close( i_file );
+ return( NULL );
}
/* Copy font properties */
p_font->i_type = VOUT_FIXED_FONT;
p_font->i_width = 8;
- p_font->i_height = pi_buffer[1];
+ p_font->i_height = pi_buffer[1];
p_font->i_interspacing = 8;
p_font->i_bytes_per_line = 1;
p_font->i_bytes_per_char = pi_buffer[1];
p_font->i_first = 0;
p_font->i_last = 255;
-
+
/* Allocate font space */
p_font->p_data = malloc( 2 * 256 * pi_buffer[1] );
if( p_font->p_data == NULL )
{
intf_ErrMsg("error: %s\n", strerror(ENOMEM));
- free( p_font );
+ free( p_font );
close( i_file );
- return( NULL );
+ return( NULL );
}
-
+
/* Copy raw data */
if( read( i_file, p_font->p_data, 256 * pi_buffer[1] ) != 256 * pi_buffer[1] )
{
intf_ErrMsg("error: unexpected end of file '%s'\n", psz_name );
- free( p_font->p_data );
- free( p_font );
- close( i_file );
- return( NULL );
- }
+ free( p_font->p_data );
+ free( p_font );
+ close( i_file );
+ return( NULL );
+ }
- /* Computes border masks - remember that masks have the same matrix as
+ /* Computes border masks - remember that masks have the same matrix as
* characters, so an empty character border is required to have a complete
* border mask. */
for( i_char = 0; i_char <= 255; i_char++ )
{
for( i_line = 0; i_line < pi_buffer[1]; i_line++ )
{
-
+
p_font->p_data[ (i_char + 256) * pi_buffer[1] + i_line ] =
((p_font->p_data[ i_char * pi_buffer[1] + i_line ] << 1) |
(p_font->p_data[ i_char * pi_buffer[1] + i_line ] >> 1) |
(i_line > 0 ? p_font->p_data[ i_char * pi_buffer[1] + i_line - 1]: 0) |
- (i_line < pi_buffer[1] - 1 ? p_font->p_data[ i_char * pi_buffer[1] + i_line + 1]: 0))
- & ~p_font->p_data[ i_char * pi_buffer[1] + i_line ];
- }
+ (i_line < pi_buffer[1] - 1 ? p_font->p_data[ i_char * pi_buffer[1] + i_line + 1]: 0))
+ & ~p_font->p_data[ i_char * pi_buffer[1] + i_line ];
+ }
}
-
+
break;
default:
intf_ErrMsg("error: file '%s' has an unknown format\n", psz_name );
- free( p_font );
+ free( p_font );
close( i_file );
- return( NULL );
- break;
- }
-
-
- intf_DbgMsg( "loaded %s: type %d, %d-%dx%d\n", psz_name, p_font->i_type,
+ return( NULL );
+ break;
+ }
+
+
+ intf_DbgMsg( "loaded %s: type %d, %d-%dx%d\n", psz_name, p_font->i_type,
p_font->i_width, p_font->i_interspacing, p_font->i_height );
return( p_font );
}
-/*******************************************************************************
+/*****************************************************************************
* vout_UnloadFont: unload a font
- *******************************************************************************
+ *****************************************************************************
* This function free the resources allocated by vout_LoadFont
- *******************************************************************************/
+ *****************************************************************************/
void vout_UnloadFont( vout_font_t *p_font )
{
- intf_DbgMsg( "font %p\n", p_font );
- free( p_font->p_data );
- free( p_font );
+ intf_DbgMsg( "vout: unloading font %p\n", p_font );
+ free( p_font->p_data );
+ free( p_font );
}
-/*******************************************************************************
+/*****************************************************************************
* vout_TextSize: return the dimensions of a text
- *******************************************************************************
+ *****************************************************************************
* This function is used to align text. It returns the width and height of a
- * given text.
- *******************************************************************************/
+ * given text.
+ *****************************************************************************/
void vout_TextSize( vout_font_t *p_font, int i_style, const char *psz_text, int *pi_width, int *pi_height )
{
switch( p_font->i_type )
{
- case VOUT_FIXED_FONT:
- *pi_width = ((i_style & WIDE_TEXT) ? p_font->i_interspacing * 2 : p_font->i_interspacing) *
+ case VOUT_FIXED_FONT:
+ *pi_width = ((i_style & WIDE_TEXT) ? p_font->i_interspacing * 2 : p_font->i_interspacing) *
(strlen( psz_text ) - 1) + p_font->i_width;
*pi_height = p_font->i_height;
if( i_style & ITALIC_TEXT )
{
- *pi_width = *pi_height / 3;
- }
+ *pi_width = *pi_height / 3;
+ }
break;
#ifdef DEBUG
default:
- intf_DbgMsg("error: unknown font type %d\n", p_font->i_type );
- break;
+ intf_DbgMsg("error: unknown font type %d\n", p_font->i_type );
+ break;
#endif
}
}
-/*******************************************************************************
+/*****************************************************************************
* vout_Print: low level printing function
- *******************************************************************************
- * This function prints a text, without clipping, in a buffer using a previously
- * loaded bitmap font.
- *******************************************************************************/
-void vout_Print( vout_font_t *p_font, byte_t *p_pic, int i_bytes_per_pixel, int i_bytes_per_line,
+ *****************************************************************************
+ * This function prints a text, without clipping, in a buffer using a
+ * previously loaded bitmap font.
+ *****************************************************************************/
+void vout_Print( vout_font_t *p_font, byte_t *p_pic, int i_bytes_per_pixel, int i_bytes_per_line,
u32 i_char_color, u32 i_border_color, u32 i_bg_color, int i_style, const char *psz_text )
{
byte_t *p_char, *p_border; /* character and border mask data */
int i_font_bytes_per_line, i_font_height; /* font properties */
vout_put_byte_t *p_PutByte; /* PutByte function */
- //?? background: can be something else that whole byte
+ /* FIXME: background: can be something else that whole byte ?? */
/* Select output function */
switch( i_bytes_per_pixel )
{
case 1:
p_PutByte = (vout_put_byte_t *) PutByte8;
- break;
+ break;
case 2:
p_PutByte = (vout_put_byte_t *) PutByte16;
break;
i_font_bytes_per_line = p_font->i_bytes_per_line;
i_font_height = p_font->i_height;
- i_interspacing = i_bytes_per_pixel * ((i_style & WIDE_TEXT) ?
- p_font->i_interspacing * 2 :
+ i_interspacing = i_bytes_per_pixel * ((i_style & WIDE_TEXT) ?
+ p_font->i_interspacing * 2 :
p_font->i_interspacing);
/* Print text */
{
/* Check that the character is valid */
if( (*psz_text >= p_font->i_first) && (*psz_text <= p_font->i_last) )
- {
+ {
/* Select character - bytes per char is always valid, event for
* non fixed fonts */
p_char = p_font->p_data + (*psz_text - p_font->i_first) * p_font->i_bytes_per_char;
- p_border = p_char + (p_font->i_last - p_font->i_first + 1) * p_font->i_bytes_per_char;
+ p_border = p_char + (p_font->i_last - p_font->i_first + 1) * p_font->i_bytes_per_char;
- /* Select base address for output */
+ /* Select base address for output */
switch( p_font->i_type )
{
case VOUT_FIXED_FONT:
- /*
- * Simple fixed width font
+ /*
+ * Simple fixed width font
*/
/* Italic text: shift picture start right */
if( i_style & ITALIC_TEXT )
{
- p_pic += i_bytes_per_pixel * (p_font->i_height / 3);
+ p_pic += i_bytes_per_pixel * (p_font->i_height / 3);
}
/* Print character */
for( i_line = 0; i_line < i_font_height; i_line ++ )
- {
+ {
for( i_byte = 0; i_byte < i_font_bytes_per_line; i_byte++, p_char++, p_border++)
{
/* Put pixels */
- p_PutByte( p_pic + i_bytes_per_line * i_line, i_byte,
- *p_char & i_char_mask, *p_border & i_border_mask, i_bg_mask,
+ p_PutByte( p_pic + i_bytes_per_line * i_line, i_byte,
+ *p_char & i_char_mask, *p_border & i_border_mask, i_bg_mask,
i_char_color, i_border_color, i_bg_color );
}
-
+
/* Italic text: shift picture start left */
if( (i_style & ITALIC_TEXT) && !(i_line % 3) )
- {
+ {
p_pic -= i_bytes_per_pixel;
}
}
/* Jump to next character */
p_pic += i_interspacing;
- break;
+ break;
#ifdef DEBUG
default:
- intf_DbgMsg("error: unknown font type %d\n", p_font->i_type );
- break;
+ intf_DbgMsg("error: unknown font type %d\n", p_font->i_type );
+ break;
#endif
}
- }
- }
+ }
+ }
}
/* following functions are local */
/*****************************************************************************
* PutByte24: print a fixed width font character byte in 3 Bpp
*****************************************************************************/
-static void PutByte24( void *p_pic, int i_byte, byte_t i_char, byte_t i_border, byte_t i_bg,
+static void PutByte24( void *p_pic, int i_byte, byte_t i_char, byte_t i_border, byte_t i_bg,
u32 i_char_color, u32 i_border_color, u32 i_bg_color )
{
- //??
+ /* XXX?? */
}
/*****************************************************************************
* PutByte32: print a fixed width font character byte in 4 Bpp
*****************************************************************************/
-static void PutByte32( u32 *p_pic, int i_byte, byte_t i_char, byte_t i_border, byte_t i_bg,
+static void PutByte32( u32 *p_pic, int i_byte, byte_t i_char, byte_t i_border, byte_t i_bg,
u32 i_char_color, u32 i_border_color, u32 i_bg_color )
{
/* Computes position offset and background mask */
projects / vlc / blobdiff