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Commit d1e33e23 authored by Gildas Bazin's avatar Gildas Bazin
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* src/video_output/video_text.c: removed legacy code that has been rotting for ages.
parent 5e207686
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src/video_output/video_text.c
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......@@ -2,10 +2,9 @@
* video_text.c : text manipulation functions
*****************************************************************************
* Copyright (C) 1999-2001 VideoLAN
* $Id: video_text.c,v 1.44 2003/07/14 21:32:59 sigmunau Exp $
* $Id: video_text.c,v 1.45 2003/08/04 23:35:25 gbazin Exp $
*
* Authors: Vincent Seguin <seguin@via.ecp.fr>
* Samuel Hocevar <sam@zoy.org>
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
*
* 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
......@@ -78,591 +77,3 @@ void vout_ShowTextAbsolute( vout_thread_t *p_vout, char *psz_string,
msg_Warn( p_vout, "No text renderer found" );
}
}
/* XXX: unused */
#if 0
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h> /* free() */
#include <stdio.h> /* sprintf() */
#include <string.h> /* strerror() */
#include <vlc/vlc.h>
#ifdef HAVE_ERRNO_H
# include <errno.h> /* errno */
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h> /* open() */
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h> /* read(), close() */
#elif defined( WIN32 ) && !defined( UNDER_CE )
# include <io.h>
#endif
#include "vlc_video.h"
#include "video_output.h"
#include "video_text.h"
/*****************************************************************************
* vout_font_t: bitmap font
*****************************************************************************
* 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.
* Therefore the border masks can't be complete if the font has pixels on the
* border.
*****************************************************************************/
struct vout_font_t
{
int i_type; /* font type */
int i_width; /* character width in pixels */
int i_height; /* character height in pixels */
int i_interspacing; /* characters interspacing in pixels */
int i_bytes_per_line; /* bytes per character line */
int i_bytes_per_char; /* bytes per character */
u16 i_first; /* first character */
u16 i_last; /* last character */
byte_t * p_data; /* font character data */
};
/* 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,
* 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,
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.
* 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 */ \
{ \
if( i_mask & 0xc0 ) /* one from 1100 */ \
{ \
if( i_mask & 0x80 ) /* 1000 */ \
{ \
p_pic[0] = i_mask_color; \
if( i_mask & 0x40 ) /* 0100 */ \
{ \
p_pic[1] = i_mask_color; \
} \
} \
else /* not 1000 means 0100 */ \
{ \
p_pic[1] = i_mask_color; \
} \
if( i_mask & 0x30 ) /* one from 0011 */ \
{ \
if( i_mask & 0x20 ) /* 0010 */ \
{ \
p_pic[2] = i_mask_color; \
if( i_mask & 0x10 ) /* 0001 */ \
{ \
p_pic[3] = i_mask_color; \
} \
} \
else /* not 0010 means 0001 */ \
{ \
p_pic[3] = i_mask_color; \
} \
} \
} \
else /* not 1100 means 0011 */ \
{ \
if( i_mask & 0x20 ) /* 0010 */ \
{ \
p_pic[2] = i_mask_color; \
if( i_mask & 0x10 ) /* 0001 */ \
{ \
p_pic[3] = i_mask_color; \
} \
} \
else /* not 0010 means 0001 */ \
{ \
p_pic[3] = i_mask_color; \
} \
} \
} \
if( i_mask & 0x0f ) \
{ \
if( i_mask & 0x0c ) /* one from 1100 */ \
{ \
if( i_mask & 0x08 ) /* 1000 */ \
{ \
p_pic[4] = i_mask_color; \
if( i_mask & 0x04 ) /* 0100 */ \
{ \
p_pic[5] = i_mask_color; \
} \
} \
else /* not 1000 means 0100 */ \
{ \
p_pic[5] = i_mask_color; \
} \
if( i_mask & 0x03 ) /* one from 0011 */ \
{ \
if( i_mask & 0x02 ) /* 0010 */ \
{ \
p_pic[6] = i_mask_color; \
if( i_mask & 0x01 ) /* 0001 */ \
{ \
p_pic[7] = i_mask_color; \
} \
} \
else /* not 0010 means 0001 */ \
{ \
p_pic[7] = i_mask_color; \
} \
} \
} \
else /* not 1100 means 0011 */ \
{ \
if( i_mask & 0x02 ) /* 0010 */ \
{ \
p_pic[6] = i_mask_color; \
if( i_mask & 0x01 ) /* 0001 */ \
{ \
p_pic[7] = i_mask_color; \
} \
} \
else /* not 0010 means 0001 */ \
{ \
p_pic[7] = i_mask_color; \
} \
} \
}
/*****************************************************************************
* 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,
u32 i_bg_color );
static void PutByte16( u16 *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 );
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 );
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 );
/*****************************************************************************
* vout_LoadFont: load a bitmap font from a file
*****************************************************************************
* This function will try to open a .psf font and load it. It will return
* NULL on error.
*****************************************************************************/
vout_font_t *vout_LoadFont( vout_thread_t *p_vout, const char *psz_name )
{
static char * path[] = { "share", DATA_PATH, NULL, NULL };
char ** ppsz_path = path;
char * psz_file;
#if defined( SYS_BEOS ) || defined( SYS_DARWIN )
char * psz_vlcpath = p_this->p_libvlc->psz_vlcpath;
int i_vlclen = strlen( psz_vlcpath );
#endif
int i_char, i_line; /* character and line indexes */
int i_file = -1; /* source file */
byte_t pi_buffer[2]; /* file buffer */
vout_font_t * p_font; /* the font itself */
for( ; *ppsz_path != NULL ; ppsz_path++ )
{
#if defined( SYS_BEOS ) || defined( SYS_DARWIN )
/* Under BeOS, we need to add beos_GetProgramPath() to access
* files under the current directory */
if( strncmp( *ppsz_path, "/", 1 ) )
{
psz_file = malloc( strlen( psz_name ) + strlen( *ppsz_path )
+ i_vlclen + 3 );
if( psz_file == NULL )
{
continue;
}
sprintf( psz_file, "%s/%s/%s", psz_vlcpath, *ppsz_path, psz_name );
}
else
#endif
{
psz_file = malloc( strlen( psz_name ) + strlen( *ppsz_path ) + 2 );
if( psz_file == NULL )
{
continue;
}
sprintf( psz_file, "%s/%s", *ppsz_path, psz_name );
}
/* Open file */
#ifndef UNDER_CE /* FIXME */
i_file = open( psz_file, O_RDONLY );
#endif
free( psz_file );
if( i_file != -1 )
{
break;
}
}
if( i_file == -1 )
{
#ifdef HAVE_ERRNO_H
msg_Err( p_vout, "cannot open '%s' (%s)", psz_name, strerror(errno) );
#else
msg_Err( p_vout, "cannot open '%s'", psz_name );
#endif
return( NULL );
}
/* Read magic number */
#ifndef UNDER_CE /* FIXME */
if( read( i_file, pi_buffer, 2 ) != 2 )
{
msg_Err( p_vout, "unexpected end of file in '%s'", psz_name );
close( i_file );
return( NULL );
}
#endif
/* Allocate font descriptor */
p_font = malloc( sizeof( vout_font_t ) );
if( p_font == NULL )
{
msg_Err( p_vout, "out of memory" );
#ifndef UNDER_CE /* FIXME */
close( i_file );
#endif
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 wide, and 256 or 512 characters long.
*/
/* Read font header - two bytes indicate the font properties */
#ifndef UNDER_CE /* FIXME */
if( read( i_file, pi_buffer, 2 ) != 2)
{
msg_Err( p_vout, "unexpected end of file in '%s'", psz_name );
free( p_font );
close( i_file );
return( NULL );
}
#endif
/* 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_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 )
{
msg_Err( p_vout, "out of memory" );
free( p_font );
#ifndef UNDER_CE /* FIXME */
close( i_file );
#endif
return( NULL );
}
/* Copy raw data */
#ifndef UNDER_CE /* FIXME */
if( read( i_file, p_font->p_data, 256 * pi_buffer[1] ) != 256 * pi_buffer[1] )
{
msg_Err( p_vout, "unexpected end of file in '%s'", psz_name );
free( p_font->p_data );
free( p_font );
close( i_file );
return( NULL );
}
#endif
/* Compute 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 ];
}
}
break;
default:
msg_Err( p_vout, "file '%s' has an unknown format", psz_name );
free( p_font );
#ifndef UNDER_CE /* FIXME */
close( i_file );
#endif
return( NULL );
break;
}
msg_Err( p_vout, "loaded %s, type %d, %d-%dx%d", 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 )
{
/* If no font was loaded, do nothing */
if( p_font == NULL )
{
return;
}
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.
*****************************************************************************/
void vout_TextSize( vout_font_t *p_font, int i_style, const char *psz_text, int *pi_width, int *pi_height )
{
/* If no font was loaded, do nothing */
if( p_font == NULL )
{
*pi_width = *pi_height = 0;
return;
}
switch( p_font->i_type )
{
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;
}
break;
}
}
/*****************************************************************************
* 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,
u32 i_char_color, u32 i_border_color, u32 i_bg_color, int i_style, const char *psz_text, int i_percent)
{
byte_t *p_char, *p_border; /* character and border mask data */
int i_char_mask, i_border_mask, i_bg_mask; /* masks */
int i_line; /* current line in character */
int i_byte; /* current byte in character */
int i_interspacing; /* offset between two chars */
int i_font_bytes_per_line, i_font_height; /* font properties */
unsigned int i_position, i_end; /* current position */
vout_put_byte_t *p_PutByte; /* PutByte function */
/* If no font was loaded, do nothing */
if( p_font == NULL )
{
return;
}
/* 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;
case 2:
p_PutByte = (vout_put_byte_t *) PutByte16;
break;
case 3:
p_PutByte = (vout_put_byte_t *) PutByte24;
break;
case 4:
default:
p_PutByte = (vout_put_byte_t *) PutByte32;
break;
}
/* Choose masks and copy font data to local variables */
i_char_mask = (i_style & VOID_TEXT) ? 0 : 0xff;
i_border_mask = (i_style & OUTLINED_TEXT) ? 0xff : 0;
i_bg_mask = (i_style & OPAQUE_TEXT) ? 0xff : 0;
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 :
p_font->i_interspacing);
/* compute where to stop... */
i_end = (int) (i_percent * strlen(psz_text) / (s64)100);
if(i_end > strlen(psz_text))
i_end = strlen(psz_text);
/* Print text */
for( i_position = 0; i_position < i_end; i_position++ ,psz_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;
/* Select base address for output */
switch( p_font->i_type )
{
case VOUT_FIXED_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);
}
/* 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,
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;
}
}
}
}
/* following functions are local */
/*****************************************************************************
* PutByte8: print a fixed width font character byte in 1 Bpp
*****************************************************************************/
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,
u32 i_bg_color )
{
/* Computes position offset and background mask */
p_pic += 8 * i_byte;
i_bg &= ~(i_char | i_border);
/* Put character bits */
PUT_BYTE_MASK(i_char, i_char_color);
PUT_BYTE_MASK(i_border, i_border_color);
PUT_BYTE_MASK(i_bg, i_bg_color);
}
/*****************************************************************************
* PutByte16: print a fixed width font character byte in 2 Bpp
*****************************************************************************/
static void PutByte16( u16 *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 )
{
/* Computes position offset and background mask */
p_pic += 8 * i_byte;
i_bg &= ~(i_char | i_border);
/* Put character bits */
PUT_BYTE_MASK(i_char, i_char_color);
PUT_BYTE_MASK(i_border, i_border_color);
PUT_BYTE_MASK(i_bg, i_bg_color);
}
/*****************************************************************************
* 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,
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,
u32 i_char_color, u32 i_border_color, u32 i_bg_color )
{
/* Computes position offset and background mask */
p_pic += 8 * i_byte;
i_bg &= ~(i_char | i_border);
/* Put character bits */
PUT_BYTE_MASK(i_char, i_char_color);
PUT_BYTE_MASK(i_border, i_border_color);
PUT_BYTE_MASK(i_bg, i_bg_color);
}
#endif
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