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Commit ea6d9b7a authored by Sigmund Augdal Helberg's avatar Sigmund Augdal Helberg
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modules/video_filter/Modules.am: forgot to add the osdtest module 

modules/video_filter/osd_text.c: fixed a bug in size/place calculations.
Support gamma correction of the text.
parent 7dc78a32
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Showing with 45 additions and 35 deletions
modules/video_filter/Modules.am
View file @ ea6d9b7a
......@@ -6,5 +6,5 @@ SOURCES_wall = modules/video_filter/wall.c
SOURCES_clone = modules/video_filter/clone.c
SOURCES_crop = modules/video_filter/crop.c
SOURCES_motionblur = modules/video_filter/motionblur.c
SOURCES_osdtext = modules/video_filter/osd_text.c
noinst_HEADERS += modules/video_filter/filter_common.h
modules/video_filter/osd_text.c
View file @ ea6d9b7a
......@@ -2,7 +2,7 @@
* osd_text.c : Filter to put text on the video, using freetype2
*****************************************************************************
* Copyright (C) 2002, 2003 VideoLAN
* $Id: osd_text.c,v 1.1 2003/03/23 16:38:40 sigmunau Exp $
* $Id: osd_text.c,v 1.2 2003/04/08 07:22:10 sigmunau Exp $
*
* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
*
......@@ -30,6 +30,7 @@
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include <osd.h>
#include <math.h>
#include "filter_common.h"
......@@ -114,6 +115,7 @@ struct vout_sys_t
mtime_t i_end_date;
vlc_mutex_t *lock;
vlc_bool_t i_use_kerning;
uint8_t pi_gamma[256];
};
/* more prototypes */
static void ComputeBoundingBox( string_info_t * );
......@@ -124,11 +126,14 @@ static void FreeString( string_info_t * );
*****************************************************************************
* This function allocates and initializes a Clone vout method.
*****************************************************************************/
#define gamma_value 2.0
static int Create( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
char *psz_fontfile;
int i_error;
int i, i_error;
vlc_value_t val;
double gamma_inv = 1.0f / gamma_value;
/* Allocate structure */
p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
......@@ -137,33 +142,7 @@ static int Create( vlc_object_t *p_this )
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_vout->p_sys->p_strings = malloc( sizeof( string_info_t ) );
if( p_vout->p_sys->p_strings == NULL )
{
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_vout->p_sys->p_strings = NULL;
#if 0
p_vout->p_sys->p_strings->i_x_margin = 20;
p_vout->p_sys->p_strings->i_y_margin = 100;
p_vout->p_sys->p_strings->i_start_date = 0;
p_vout->p_sys->p_strings->i_end_date = 0xFFFFFFFFFFFFFFFll;
p_vout->p_sys->p_strings->psz_text = "VideoLAN";
p_vout->p_sys->p_strings->p_next = NULL;
p_vout->p_sys->p_strings->p_next = malloc(sizeof(string_info_t));
if( p_vout->p_sys->p_strings->p_next == NULL )
{
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_vout->p_sys->p_strings->p_next->i_x_margin = 50;
p_vout->p_sys->p_strings->p_next->i_y_margin = 300;
p_vout->p_sys->p_strings->p_next->i_start_date = 0;
p_vout->p_sys->p_strings->p_next->i_end_date = 0xFFFFFFFFFFFFFFFll;
p_vout->p_sys->p_strings->p_next->psz_text = "freetype is cool!";
p_vout->p_sys->p_strings->p_next->p_next = NULL;
#endif
p_vout->p_sys->i_x_margin = 50;
p_vout->p_sys->i_y_margin = 50;
p_vout->p_sys->i_flags = 0;
......@@ -178,6 +157,12 @@ static int Create( vlc_object_t *p_this )
return VLC_ENOMEM;
}
vlc_mutex_init( p_vout, p_vout->p_sys->lock);
for (i = 0; i < 256; i++) {
p_vout->p_sys->pi_gamma[i] =
(uint8_t)( pow( (double)i / 255.0f, gamma_inv) * 255.0f );
msg_Dbg( p_vout, "%d", p_vout->p_sys->pi_gamma[i]);
}
p_vout->pf_init = Init;
p_vout->pf_end = End;
p_vout->pf_manage = NULL;
......@@ -212,7 +197,8 @@ static int Create( vlc_object_t *p_this )
i_error = FT_Set_Pixel_Sizes( p_vout->p_sys->p_face, 0, config_GetInt( p_vout, "osd-fontsize" ) );
if( i_error )
{
msg_Err( p_vout, "couldn't set font size to 64" );
msg_Err( p_vout, "couldn't set font size to %d",
config_GetInt( p_vout, "osd-fontsize" ) );
free( p_vout->p_sys );
return VLC_EGENERIC;
}
......@@ -231,6 +217,11 @@ static int Create( vlc_object_t *p_this )
var_AddCallback( p_vout, "end-date", SetMargin, NULL );
var_Create( p_vout, "string", VLC_VAR_STRING | VLC_VAR_ISCOMMAND );
var_AddCallback( p_vout, "string", AddText, NULL );
val.psz_string = "Videolan";
// var_Set( p_vout, "string", val );
// p_vout->p_sys->p_strings->i_end_date = 0xFFFFFFFFFFFFFFF;
return VLC_SUCCESS;
}
......@@ -261,6 +252,7 @@ static int Init( vout_thread_t *p_vout )
msg_Err( p_vout, "failed to start vout" );
return VLC_EGENERIC;
}
ADD_CALLBACKS( p_vout->p_sys->p_vout, SendEvents );
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
......@@ -348,6 +340,8 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
msleep( VOUT_OUTMEM_SLEEP );
}
vout_DatePicture( p_vout->p_sys->p_vout,
p_outpic, p_pic->date );
if( p_vout->i_changes )
{
p_vout->p_sys->p_vout->i_changes = p_vout->i_changes;
......@@ -365,8 +359,6 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
FreeString( p_string );
}
vout_DatePicture( p_vout->p_sys->p_vout,
p_outpic, p_pic->date );
vlc_mutex_lock( p_vout->p_sys->lock );
......@@ -399,7 +391,8 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
}
/* pen_x = 20;
pen_y = 100;*/
if ( i_plane == 0 ) {
if ( i_plane == 0 )
{
for( p_string = p_vout->p_sys->p_strings; p_string != NULL;
p_string = p_string->p_next )
{
......@@ -438,12 +431,14 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
0 );
if ( i_error ) continue;
p_image = (FT_BitmapGlyph)p_glyph;
#define alpha p_image->bitmap.buffer[x+ y*p_image->bitmap.width]
#define alpha p_vout->p_sys->pi_gamma[p_image->bitmap.buffer[x+ y*p_image->bitmap.width]]
#define pixel p_out[(p_string->p_glyph_pos[i].y + pen_y + y - p_image->top)*i_out_pitch+x+pen_x+p_string->p_glyph_pos[i].x+p_image->left]
for(y = 0; y < p_image->bitmap.rows; y++ )
{
for( x = 0; x < p_image->bitmap.width; x++ )
{
// pixel = alpha;
// pixel = (pixel^alpha)^pixel;
pixel = ((pixel*(255-alpha))>>8) + (255*alpha>>8);
}
}
......@@ -601,7 +596,7 @@ static int AddText ( vlc_object_t *p_this, char const *psz_command,
static void ComputeBoundingBox( string_info_t *p_string )
{
unsigned int i;
unsigned int i, i2;
int pen_y = 0;
FT_Vector result;
FT_Vector line;
......@@ -615,8 +610,16 @@ static void ComputeBoundingBox( string_info_t *p_string )
{
if ( p_string->psz_text[i] == '\n' )
{
i2 = i - 1;
while ( i2 >= 0 && p_string->psz_text[i2] )
{
p_string->p_glyph_pos[i2].y += line.y;
i2--;
}
result.x = __MAX( result.x, line.x );
result.y += line.y;
line.y = 0;
line.x = 0;
pen_y = result.y;
continue;
}
......@@ -629,6 +632,12 @@ static void ComputeBoundingBox( string_info_t *p_string )
}
result.x = __MAX( result.x, line.x );
result.y += line.y;
i2 = i - 1;
while ( i2 >= 0 && p_string->psz_text[i2] )
{
p_string->p_glyph_pos[i2].y += line.y;
i2--;
}
p_string->i_height = result.y;
p_string->i_width = result.x;
return;
......@@ -649,3 +658,4 @@ static void FreeString( string_info_t *p_string )
free( p_string->pp_glyphs );
free( p_string );
}
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