Commit fad12b2e authored by gbazin's avatar gbazin
Browse files

* modules/misc/win32text.c: text renderer using the win32 TextOut API.

parent cb31dc35
......@@ -1011,6 +1011,8 @@ if test "${SYS}" != "mingw32" -a "${SYS}" != "mingwce"; then
elif test "${SYS}" != "mingwce"; then
VLC_ADD_PLUGINS([ntservice access_smb dmo])
VLC_ADD_LDFLAGS([dmo],[-lole32])
else
VLC_ADD_PLUGINS([win32text])
fi
dnl
......
......@@ -5,6 +5,7 @@ SOURCES_gnome2_main = gtk_main.c
SOURCES_screensaver = screensaver.c
SOURCES_qte_main = qte_main.cpp
SOURCES_freetype = freetype.c
SOURCES_win32text = win32text.c
SOURCES_logger = logger.c
SOURCES_vod_rtsp = rtsp.c
SOURCES_gnutls = gnutls.c
......
/*****************************************************************************
* win32text.c : Text drawing routines using the TextOut win32 API
*****************************************************************************
* Copyright (C) 2002 - 2005 VideoLAN
* $Id: freetype.c 10258 2005-03-10 13:37:29Z gbazin $
*
* Authors: Gildas Bazin <gbazin@videolan.org>
*
* 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 <stdlib.h> /* malloc(), free() */
#include <string.h>
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include "osd.h"
#include "vlc_block.h"
#include "vlc_filter.h"
#include <math.h>
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy( vlc_object_t * );
/* The RenderText call maps to pf_render_string, defined in vlc_filter.h */
static int RenderText( filter_t *, subpicture_region_t *,
subpicture_region_t * );
static int Render( filter_t *, subpicture_region_t *, uint8_t *, int, int);
static int SetFont( filter_t *, int );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define FONT_TEXT N_("Font")
#define FONT_LONGTEXT N_("Font filename")
#define FONTSIZE_TEXT N_("Font size in pixels")
#define FONTSIZE_LONGTEXT N_("The size of the fonts used by the osd module. " \
"If set to something different than 0 this option will override the " \
"relative font size " )
#define OPACITY_TEXT N_("Opacity, 0..255")
#define OPACITY_LONGTEXT N_("The opacity (inverse of transparency) of " \
"overlay text. 0 = transparent, 255 = totally opaque. " )
#define COLOR_TEXT N_("Text Default Color")
#define COLOR_LONGTEXT N_("The color of overlay text. 1 byte for each color, "\
"hexadecimal. #000000 = all colors off, 0xFF0000 = just Red, " \
"0xFFFFFF = all color on [White]" )
#define FONTSIZER_TEXT N_("Font size")
#define FONTSIZER_LONGTEXT N_("The size of the fonts used by the osd module" )
static int pi_sizes[] = { 20, 18, 16, 12, 6 };
static char *ppsz_sizes_text[] = { N_("Smaller"), N_("Small"), N_("Normal"),
N_("Large"), N_("Larger") };
static int pi_color_values[] = {
0x00000000, 0x00808080, 0x00C0C0C0, 0x00FFFFFF, 0x00800000,
0x00FF0000, 0x00FF00FF, 0x00FFFF00, 0x00808000, 0x00008000, 0x00008080,
0x0000FF00, 0x00800080, 0x00000080, 0x000000FF, 0x0000FFFF };
static char *ppsz_color_descriptions[] = {
N_("Black"), N_("Gray"), N_("Silver"), N_("White"), N_("Maroon"),
N_("Red"), N_("Fuchsia"), N_("Yellow"), N_("Olive"), N_("Green"), N_("Teal"),
N_("Lime"), N_("Purple"), N_("Navy"), N_("Blue"), N_("Aqua") };
vlc_module_begin();
set_shortname( _("Text renderer"));
set_description( _("Win32 font renderer") );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_SUBPIC );
add_integer( "win32text-fontsize", 0, NULL, FONTSIZE_TEXT,
FONTSIZE_LONGTEXT, VLC_TRUE );
/* opacity valid on 0..255, with default 255 = fully opaque */
add_integer_with_range( "win32-opacity", 255, 0, 255, NULL,
OPACITY_TEXT, OPACITY_LONGTEXT, VLC_FALSE );
/* hook to the color values list, with default 0x00ffffff = white */
add_integer( "win32text-color", 0x00FFFFFF, NULL, COLOR_TEXT,
COLOR_LONGTEXT, VLC_TRUE );
change_integer_list( pi_color_values, ppsz_color_descriptions, 0 );
add_integer( "win32text-rel-fontsize", 16, NULL, FONTSIZER_TEXT,
FONTSIZER_LONGTEXT, VLC_FALSE );
change_integer_list( pi_sizes, ppsz_sizes_text, 0 );
set_capability( "text renderer", 50 );
add_shortcut( "text" );
set_callbacks( Create, Destroy );
vlc_module_end();
/*****************************************************************************
* filter_sys_t: win32text local data
*****************************************************************************/
struct filter_sys_t
{
uint8_t i_font_opacity;
int i_font_color;
int i_font_size;
int i_default_font_size;
int i_display_height;
HDC hcdc;
HFONT hfont;
HFONT hfont_bak;
int i_logpy;
};
static uint8_t pi_gamma[16] =
{0x00, 0x41, 0x52, 0x63, 0x84, 0x85, 0x96, 0xa7, 0xb8, 0xc9,
0xca, 0xdb, 0xdc, 0xed, 0xee, 0xff};
/*****************************************************************************
* Create: creates the module
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys;
char *psz_fontfile = NULL;
vlc_value_t val;
HDC hdc;
/* Allocate structure */
p_filter->p_sys = p_sys = malloc( sizeof( filter_sys_t ) );
if( !p_sys )
{
msg_Err( p_filter, "out of memory" );
return VLC_ENOMEM;
}
p_sys->i_font_size = 0;
p_sys->i_display_height = 0;
var_Create( p_filter, "win32text-font",
VLC_VAR_STRING | VLC_VAR_DOINHERIT );
var_Create( p_filter, "win32text-fontsize",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "win32text-rel-fontsize",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Create( p_filter, "win32text-opacity",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_filter, "win32text-opacity", &val );
p_sys->i_font_opacity = __MAX( __MIN( val.i_int, 255 ), 0 );
var_Create( p_filter, "win32text-color",
VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
var_Get( p_filter, "win32text-color", &val );
p_sys->i_font_color = __MAX( __MIN( val.i_int, 0xFFFFFF ), 0 );
p_sys->hfont = p_sys->hfont_bak = 0;
hdc = GetDC( NULL );
p_sys->hcdc = CreateCompatibleDC( hdc );
p_sys->i_logpy = GetDeviceCaps( hdc, LOGPIXELSY );
ReleaseDC( NULL, hdc );
SetBkMode( p_sys->hcdc, TRANSPARENT );
var_Get( p_filter, "win32text-fontsize", &val );
p_sys->i_default_font_size = val.i_int;
if( SetFont( p_filter, 0 ) != VLC_SUCCESS ) goto error;
if( psz_fontfile ) free( psz_fontfile );
p_filter->pf_render_text = RenderText;
return VLC_SUCCESS;
error:
if( psz_fontfile ) free( psz_fontfile );
free( p_sys );
return VLC_EGENERIC;
}
/*****************************************************************************
* Destroy: destroy the module
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
filter_sys_t *p_sys = p_filter->p_sys;
if( p_sys->hfont_bak ) SelectObject( p_sys->hcdc, p_sys->hfont_bak );
if( p_sys->hfont ) DeleteObject( p_sys->hfont );
DeleteDC( p_sys->hcdc );
free( p_sys );
}
/*****************************************************************************
* Render: place string in picture
*****************************************************************************
* This function merges the previously rendered win32text glyphs into a picture
*****************************************************************************/
static int Render( filter_t *p_filter, subpicture_region_t *p_region,
uint8_t *p_bitmap, int i_width, int i_height )
{
uint8_t *p_dst;
video_format_t fmt;
int i, i_pitch;
subpicture_region_t *p_region_tmp;
vlc_bool_t b_outline = VLC_TRUE;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('Y','U','V','P');
fmt.i_width = fmt.i_visible_width = i_width + (b_outline ? 4 : 0);
fmt.i_height = fmt.i_visible_height = i_height + (b_outline ? 4 : 0);
fmt.i_x_offset = fmt.i_y_offset = 0;
p_region_tmp = spu_CreateRegion( p_filter, &fmt );
if( !p_region_tmp )
{
msg_Err( p_filter, "cannot allocate SPU region" );
return VLC_EGENERIC;
}
/* Build palette */
fmt.p_palette->i_entries = 16;
for( i = 0; i < fmt.p_palette->i_entries; i++ )
{
fmt.p_palette->palette[i][0] = pi_gamma[i];
fmt.p_palette->palette[i][1] = 128;
fmt.p_palette->palette[i][2] = 128;
fmt.p_palette->palette[i][3] = pi_gamma[i];
}
p_region->fmt = p_region_tmp->fmt;
p_region->picture = p_region_tmp->picture;
free( p_region_tmp );
p_dst = p_region->picture.Y_PIXELS;
i_pitch = p_region->picture.Y_PITCH;
if( b_outline )
{
memset( p_dst, 0, i_pitch * fmt.i_height );
p_dst += p_region->picture.Y_PITCH * 2 + 2;
}
for( i = 0; i < i_height; i++ )
{
memcpy( p_dst, p_bitmap, i_width );
p_bitmap += (i_width+3) & ~3;
p_dst += i_pitch;
}
/* Outlining (find something better than nearest neighbour filtering ?) */
if( b_outline )
{
uint8_t *p_top = p_dst; /* Use 1st line as a cache */
uint8_t left, current;
int x, y;
p_dst = p_region->picture.Y_PIXELS;
for( y = 1; y < (int)fmt.i_height - 1; y++ )
{
memcpy( p_top, p_dst, fmt.i_width );
p_dst += i_pitch;
left = 0;
for( x = 1; x < (int)fmt.i_width - 1; x++ )
{
current = p_dst[x];
p_dst[x] = ( 4 * (int)p_dst[x] + left + p_top[x] + p_dst[x+1] +
p_dst[x + i_pitch]) / 8;
left = current;
}
}
memset( p_top, 0, fmt.i_width );
}
return VLC_SUCCESS;
}
static int RenderText( filter_t *p_filter, subpicture_region_t *p_region_out,
subpicture_region_t *p_region_in )
{
filter_sys_t *p_sys = p_filter->p_sys;
int i_font_color, i_font_alpha, i_font_size;
uint8_t *p_bitmap;
TCHAR *psz_string;
int i, i_width, i_height;
HBITMAP bitmap, bitmap_bak;
BITMAPINFO *p_bmi;
RECT rect = {0};
SIZE size;
/* Sanity check */
if( !p_region_in || !p_region_out ) return VLC_EGENERIC;
#ifdef UNICODE
psz_string = malloc( (strlen( p_region_in->psz_text )+1) * sizeof(TCHAR) );
if( mbstowcs( psz_string, p_region_in->psz_text,
strlen( p_region_in->psz_text ) * sizeof(TCHAR) ) < 0 )
{
free( psz_string );
return VLC_EGENERIC;
}
#else
psz_string = strdup( p_region_in->psz_text );
#endif
if( !psz_string || !*psz_string ) return VLC_EGENERIC;
i_font_color = __MAX( __MIN( p_region_in->i_text_color, 0xFFFFFF ), 0 );
if( i_font_color == 0xFFFFFF ) i_font_color = p_sys->i_font_color;
i_font_alpha = __MAX( __MIN( p_region_in->i_text_alpha, 255 ), 0 );
if( !i_font_alpha ) i_font_alpha = 255 - p_sys->i_font_opacity;
i_font_size = __MAX( __MIN( p_region_in->i_text_size, 255 ), 0 );
SetFont( p_filter, i_font_size );
SetTextColor( p_sys->hcdc, RGB( (i_font_color >> 16) & 0xff,
(i_font_color >> 8) & 0xff, i_font_color & 0xff) );
GetTextExtentExPoint( p_sys->hcdc, psz_string, _tcslen(psz_string),
0, 0, 0, &size );
i_width = rect.right = size.cx; i_height = rect.bottom = size.cy;
p_bmi = malloc(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD)*16);
memset( p_bmi, 0, sizeof(BITMAPINFOHEADER) );
p_bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
p_bmi->bmiHeader.biWidth = (i_width+3) & ~3;
p_bmi->bmiHeader.biHeight = - i_height;
p_bmi->bmiHeader.biPlanes = 1;
p_bmi->bmiHeader.biBitCount = 8;
p_bmi->bmiHeader.biCompression = BI_RGB;
p_bmi->bmiHeader.biClrUsed = 16;
for( i = 0; i < 16; i++ )
{
p_bmi->bmiColors[i].rgbBlue =
p_bmi->bmiColors[i].rgbGreen =
p_bmi->bmiColors[i].rgbRed = pi_gamma[i];
}
bitmap = CreateDIBSection( p_sys->hcdc, p_bmi, DIB_RGB_COLORS,
(void **)&p_bitmap, NULL, 0 );
if( !bitmap )
{
msg_Err( p_filter, "could not create bitmap" );
return VLC_EGENERIC;
}
bitmap_bak = SelectObject( p_sys->hcdc, bitmap );
FillRect( p_sys->hcdc, &rect, (HBRUSH)GetStockObject(BLACK_BRUSH) );
//TextOut( p_sys->hcdc, 0, 0, psz_string, strlen(psz_string) );
if( !DrawText( p_sys->hcdc, psz_string, -1, &rect, 0 ) )
{
msg_Err( p_filter, "could not draw text" );
}
p_region_out->i_x = p_region_in->i_x;
p_region_out->i_y = p_region_in->i_y;
Render( p_filter, p_region_out, p_bitmap, i_width, i_height );
SelectObject( p_sys->hcdc, bitmap_bak );
DeleteObject( bitmap );
return VLC_SUCCESS;
}
static int SetFont( filter_t *p_filter, int i_size )
{
filter_sys_t *p_sys = p_filter->p_sys;
LOGFONT logfont;
if( i_size && i_size == p_sys->i_font_size ) return VLC_SUCCESS;
if( !i_size )
{
vlc_value_t val;
if( !p_sys->i_default_font_size &&
p_sys->i_display_height == (int)p_filter->fmt_out.video.i_height )
return VLC_SUCCESS;
if( p_sys->i_default_font_size )
{
i_size = p_sys->i_default_font_size;
}
else
{
var_Get( p_filter, "win32text-rel-fontsize", &val );
i_size = (int)p_filter->fmt_out.video.i_height / val.i_int;
p_filter->p_sys->i_display_height =
p_filter->fmt_out.video.i_height;
}
if( i_size <= 0 )
{
msg_Warn( p_filter, "Invalid fontsize, using 12" );
i_size = 12;
}
msg_Dbg( p_filter, "Using fontsize: %i", i_size );
}
p_sys->i_font_size = i_size;
if( p_sys->hfont_bak ) SelectObject( p_sys->hcdc, p_sys->hfont_bak );
if( p_sys->hfont ) DeleteObject( p_sys->hfont );
i_size = i_size * (int64_t)p_sys->i_logpy / 72;
logfont.lfHeight = i_size;
logfont.lfWidth = 0;
logfont.lfEscapement = 0;
logfont.lfOrientation = 0;
logfont.lfWeight = 0;
logfont.lfItalic = FALSE;
logfont.lfUnderline = FALSE;
logfont.lfStrikeOut = FALSE;
logfont.lfCharSet = ANSI_CHARSET;
logfont.lfOutPrecision = OUT_DEFAULT_PRECIS;
logfont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
logfont.lfQuality = ANTIALIASED_QUALITY;
logfont.lfPitchAndFamily = DEFAULT_PITCH;
memcpy( logfont.lfFaceName, _T("Arial"), sizeof(_T("Arial")) );
p_sys->hfont = CreateFontIndirect( &logfont );
p_sys->hfont_bak = SelectObject( p_sys->hcdc, p_sys->hfont );
return VLC_SUCCESS;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment