* distort.c : Misc video effects plugin for vlc
*****************************************************************************
* Copyright (C) 2000, 2001 VideoLAN
- * $Id: distort.c,v 1.1 2001/12/19 03:50:22 sam Exp $
+ * $Id: distort.c,v 1.2 2001/12/19 19:26:00 sam Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
#include "modules.h"
#include "modules_export.h"
-#define DISTORT_MODE_WAVE 1
+#define DISTORT_MODE_WAVE 1
+#define DISTORT_MODE_RIPPLE 2
/*****************************************************************************
* Capabilities defined in the other files.
static int vout_Manage ( struct vout_thread_s * );
static void vout_Display ( struct vout_thread_s *, struct picture_s * );
+static void DistortWave ( struct vout_thread_s *, struct picture_s *,
+ struct picture_s * );
+static void DistortRipple ( struct vout_thread_s *, struct picture_s *,
+ struct picture_s * );
+
/*****************************************************************************
* Functions exported as capabilities. They are declared as static so that
* we don't pollute the namespace too much.
{
p_vout->p_sys->i_mode = DISTORT_MODE_WAVE;
}
+ else if( !strcmp( psz_method, ":ripple" ) )
+ {
+ p_vout->p_sys->i_mode = DISTORT_MODE_RIPPLE;
+ }
else
{
intf_ErrMsg( "filter error: no valid distort mode provided, "
int i_index;
char *psz_filter;
picture_t *p_pic;
-
+
I_OUTPUTPICTURES = 0;
/* Initialize the output structure */
main_PutPszVariable( VOUT_FILTER_VAR, "" );
intf_WarnMsg( 1, "filter: spawning the real video output" );
-
+
p_vout->p_sys->p_vout =
vout_CreateThread( NULL,
p_vout->render.i_width, p_vout->render.i_height,
static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
{
picture_t *p_outpic;
- int i_index;
- double f_angle;
- mtime_t new_date = mdate();
-
+
/* This is a new frame. Get a structure from the video_output. */
while( ( p_outpic = vout_CreatePicture( p_vout->p_sys->p_vout, 0, 0, 0 ) )
== NULL )
return;
}
msleep( VOUT_OUTMEM_SLEEP );
- }
+ }
+
+ vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, mdate() + 50000 );
+
+ switch( p_vout->p_sys->i_mode )
+ {
+ case DISTORT_MODE_WAVE:
+ DistortWave( p_vout, p_pic, p_outpic );
+ break;
+
+ case DISTORT_MODE_RIPPLE:
+ DistortRipple( p_vout, p_pic, p_outpic );
+ break;
+
+ default:
+ break;
+ }
- vout_DatePicture( p_vout->p_sys->p_vout, p_outpic, new_date + 50000 );
- vout_LinkPicture( p_vout->p_sys->p_vout, p_outpic );
+ vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
+}
+
+
+/*****************************************************************************
+ * DistortWave: draw a wave effect on the picture
+ *****************************************************************************/
+static void DistortWave( vout_thread_t *p_vout, picture_t *p_inpic,
+ picture_t *p_outpic )
+{
+ int i_index;
+ double f_angle;
+ mtime_t new_date = mdate();
- /* XXX: we should check for p_vout->p_sys->i_mode, but only WAVE is
- * implemented for the moment, so we don't care. Keep it in mind though. */
p_vout->p_sys->f_angle += (new_date - p_vout->p_sys->last_date) / 200000.0;
p_vout->p_sys->last_date = new_date;
f_angle = p_vout->p_sys->f_angle;
- for( i_index = 0 ; i_index < p_pic->i_planes ; i_index++ )
+ for( i_index = 0 ; i_index < p_inpic->i_planes ; i_index++ )
{
int i_line, i_num_lines, i_offset;
u8 black_pixel;
pixel_data_t *p_in, *p_out;
- p_in = p_pic->planes[ i_index ].p_data;
+ p_in = p_inpic->planes[ i_index ].p_data;
p_out = p_outpic->planes[ i_index ].p_data;
- i_num_lines = p_pic->planes[ i_index ].i_bytes
- / p_pic->planes[ i_index ].i_line_bytes;
+ i_num_lines = p_inpic->planes[ i_index ].i_bytes
+ / p_inpic->planes[ i_index ].i_line_bytes;
black_pixel = ( i_index == Y_PLANE ) ? 0x00 : 0x80;
for( i_line = 0 ; i_line < i_num_lines ; i_line++ )
{
/* Calculate today's offset, don't go above 1/20th of the screen */
- i_offset = (double)(p_pic->planes[ i_index ].i_line_bytes)
+ i_offset = (double)(p_inpic->planes[ i_index ].i_line_bytes)
* sin( f_angle + 10.0 * (double)i_line
/ (double)i_num_lines )
/ 20.0;
if( i_offset < 0 )
{
p_main->fast_memcpy( p_out, p_in - i_offset,
- p_pic->planes[ i_index ].i_line_bytes + i_offset );
- p_in += p_pic->planes[ i_index ].i_line_bytes;
+ p_inpic->planes[ i_index ].i_line_bytes + i_offset );
+ p_in += p_inpic->planes[ i_index ].i_line_bytes;
p_out += p_outpic->planes[ i_index ].i_line_bytes;
memset( p_out + i_offset, black_pixel, -i_offset );
}
else
{
p_main->fast_memcpy( p_out + i_offset, p_in,
- p_pic->planes[ i_index ].i_line_bytes - i_offset );
+ p_inpic->planes[ i_index ].i_line_bytes - i_offset );
memset( p_out, black_pixel, i_offset );
- p_in += p_pic->planes[ i_index ].i_line_bytes;
+ p_in += p_inpic->planes[ i_index ].i_line_bytes;
p_out += p_outpic->planes[ i_index ].i_line_bytes;
}
}
else
{
p_main->fast_memcpy( p_out, p_in,
- p_pic->planes[ i_index ].i_line_bytes );
- p_in += p_pic->planes[ i_index ].i_line_bytes;
+ p_inpic->planes[ i_index ].i_line_bytes );
+ p_in += p_inpic->planes[ i_index ].i_line_bytes;
p_out += p_outpic->planes[ i_index ].i_line_bytes;
}
}
}
+}
- vout_UnlinkPicture( p_vout->p_sys->p_vout, p_outpic );
+/*****************************************************************************
+ * DistortRipple: draw a ripple effect at the bottom of the picture
+ *****************************************************************************/
+static void DistortRipple( vout_thread_t *p_vout, picture_t *p_inpic,
+ picture_t *p_outpic )
+{
+ int i_index;
+ double f_angle;
+ mtime_t new_date = mdate();
- vout_DisplayPicture( p_vout->p_sys->p_vout, p_outpic );
+ p_vout->p_sys->f_angle -= (new_date - p_vout->p_sys->last_date) / 50000.0;
+ p_vout->p_sys->last_date = new_date;
+ f_angle = p_vout->p_sys->f_angle;
+
+ for( i_index = 0 ; i_index < p_inpic->i_planes ; i_index++ )
+ {
+ int i_line, i_first_line, i_num_lines, i_offset;
+ u8 black_pixel;
+ pixel_data_t *p_in, *p_out;
+
+ black_pixel = ( i_index == Y_PLANE ) ? 0x00 : 0x80;
+
+ i_num_lines = p_inpic->planes[ i_index ].i_bytes
+ / p_inpic->planes[ i_index ].i_line_bytes;
+
+ i_first_line = i_num_lines * 3 / 4;
+
+ p_in = p_inpic->planes[ i_index ].p_data;
+ p_out = p_outpic->planes[ i_index ].p_data;
+
+ p_main->fast_memcpy( p_out, p_in,
+ i_first_line * p_inpic->planes[ i_index ].i_line_bytes );
+
+ p_in += i_first_line * p_inpic->planes[ i_index ].i_line_bytes;
+ p_out += i_first_line * p_outpic->planes[ i_index ].i_line_bytes;
+
+ /* Ok, we do 3 times the sin() calculation for each line. So what ? */
+ for( i_line = i_first_line ; i_line < i_num_lines ; i_line++ )
+ {
+ /* Calculate today's offset, don't go above 1/20th of the screen */
+ i_offset = (double)(p_inpic->planes[ i_index ].i_line_bytes)
+ * sin( f_angle + 80.0 * (double)i_line
+ / (double)i_num_lines )
+ * (double)( i_line - i_first_line)
+ / (double)i_num_lines
+ / 4.0;
+
+ if( i_offset )
+ {
+ if( i_offset < 0 )
+ {
+ p_main->fast_memcpy( p_out, p_in - i_offset,
+ p_inpic->planes[ i_index ].i_line_bytes + i_offset );
+ p_in -= p_inpic->planes[ i_index ].i_line_bytes;
+ p_out += p_outpic->planes[ i_index ].i_line_bytes;
+ memset( p_out + i_offset, black_pixel, -i_offset );
+ }
+ else
+ {
+ p_main->fast_memcpy( p_out + i_offset, p_in,
+ p_inpic->planes[ i_index ].i_line_bytes - i_offset );
+ memset( p_out, black_pixel, i_offset );
+ p_in -= p_inpic->planes[ i_index ].i_line_bytes;
+ p_out += p_outpic->planes[ i_index ].i_line_bytes;
+ }
+ }
+ else
+ {
+ p_main->fast_memcpy( p_out, p_in,
+ p_inpic->planes[ i_index ].i_line_bytes );
+ p_in -= p_inpic->planes[ i_index ].i_line_bytes;
+ p_out += p_outpic->planes[ i_index ].i_line_bytes;
+ }
+
+ }
+ }
}
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