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vlc/modules/video_filter/wall.c
Rémi Denis-Courmont fe087a3828 Make Zorglub less unhappy
2005-07-09 06:17:09 +00:00

645 lines
22 KiB
C
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/*****************************************************************************
* wall.c : Wall video plugin for vlc
*****************************************************************************
* Copyright (C) 2000, 2001, 2002, 2003 the VideoLAN team
* $Id$
*
* Authors: Samuel Hocevar <sam@zoy.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 "filter_common.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int Create ( vlc_object_t * );
static void Destroy ( vlc_object_t * );
static int Init ( vout_thread_t * );
static void End ( vout_thread_t * );
static void Render ( vout_thread_t *, picture_t * );
static void RemoveAllVout ( vout_thread_t *p_vout );
static int SendEvents( vlc_object_t *, char const *,
vlc_value_t, vlc_value_t, void * );
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define COLS_TEXT N_("Number of columns")
#define COLS_LONGTEXT N_("Select the number of horizontal video windows in " \
"which to split the video.")
#define ROWS_TEXT N_("Number of rows")
#define ROWS_LONGTEXT N_("Select the number of vertical video windows in " \
"which to split the video.")
#define ACTIVE_TEXT N_("Active windows")
#define ACTIVE_LONGTEXT N_("Comma separated list of active windows, " \
"defaults to all")
#define ASPECT_TEXT N_("Element aspect ratio")
#define ASPECT_LONGTEXT N_("The aspect ratio of the individual displays building the display wall")
vlc_module_begin();
set_description( _("Wall video filter") );
set_shortname( N_("Image wall" ));
set_capability( "video filter", 0 );
set_category( CAT_VIDEO );
set_subcategory( SUBCAT_VIDEO_VFILTER );
add_integer( "wall-cols", 3, NULL, COLS_TEXT, COLS_LONGTEXT, VLC_FALSE );
add_integer( "wall-rows", 3, NULL, ROWS_TEXT, ROWS_LONGTEXT, VLC_FALSE );
add_string( "wall-active", NULL, NULL, ACTIVE_TEXT, ACTIVE_LONGTEXT, VLC_FALSE );
add_string( "wall-element-aspect", "4:3", NULL, ASPECT_TEXT, ASPECT_LONGTEXT, VLC_FALSE );
add_shortcut( "wall" );
set_callbacks( Create, Destroy );
vlc_module_end();
/*****************************************************************************
* vout_sys_t: Wall video output method descriptor
*****************************************************************************
* This structure is part of the video output thread descriptor.
* It describes the Wall specific properties of an output thread.
*****************************************************************************/
struct vout_sys_t
{
int i_col;
int i_row;
int i_vout;
struct vout_list_t
{
vlc_bool_t b_active;
int i_width;
int i_height;
int i_left;
int i_top;
vout_thread_t *p_vout;
} *pp_vout;
};
/*****************************************************************************
* Control: control facility for the vout (forwards to child vout)
*****************************************************************************/
static int Control( vout_thread_t *p_vout, int i_query, va_list args )
{
int i_row, i_col, i_vout = 0;
for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
{
for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
{
vout_vaControl( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
i_query, args );
i_vout++;
}
}
return VLC_SUCCESS;
}
/*****************************************************************************
* Create: allocates Wall video thread output method
*****************************************************************************
* This function allocates and initializes a Wall vout method.
*****************************************************************************/
static int Create( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
char *psz_method, *psz_tmp, *psz_method_tmp;
int i_vout;
/* Allocate structure */
p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
if( p_vout->p_sys == NULL )
{
msg_Err( p_vout, "out of memory" );
return VLC_ENOMEM;
}
p_vout->pf_init = Init;
p_vout->pf_end = End;
p_vout->pf_manage = NULL;
p_vout->pf_render = Render;
p_vout->pf_display = NULL;
p_vout->pf_control = Control;
/* Look what method was requested */
p_vout->p_sys->i_col = config_GetInt( p_vout, "wall-cols" );
p_vout->p_sys->i_row = config_GetInt( p_vout, "wall-rows" );
p_vout->p_sys->i_col = __MAX( 1, __MIN( 15, p_vout->p_sys->i_col ) );
p_vout->p_sys->i_row = __MAX( 1, __MIN( 15, p_vout->p_sys->i_row ) );
msg_Dbg( p_vout, "opening a %i x %i wall",
p_vout->p_sys->i_col, p_vout->p_sys->i_row );
p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_row *
p_vout->p_sys->i_col *
sizeof(struct vout_list_t) );
if( p_vout->p_sys->pp_vout == NULL )
{
msg_Err( p_vout, "out of memory" );
free( p_vout->p_sys );
return VLC_ENOMEM;
}
psz_method_tmp = psz_method = config_GetPsz( p_vout, "wall-active" );
/* If no trailing vout are specified, take them all */
if( psz_method == NULL )
{
for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
i_vout--; )
{
p_vout->p_sys->pp_vout[i_vout].b_active = 1;
}
}
/* If trailing vout are specified, activate only the requested ones */
else
{
for( i_vout = p_vout->p_sys->i_row * p_vout->p_sys->i_col;
i_vout--; )
{
p_vout->p_sys->pp_vout[i_vout].b_active = 0;
}
while( *psz_method )
{
psz_tmp = psz_method;
while( *psz_tmp && *psz_tmp != ',' )
{
psz_tmp++;
}
if( *psz_tmp )
{
*psz_tmp = '\0';
i_vout = atoi( psz_method );
psz_method = psz_tmp + 1;
}
else
{
i_vout = atoi( psz_method );
psz_method = psz_tmp;
}
if( i_vout >= 0 &&
i_vout < p_vout->p_sys->i_row * p_vout->p_sys->i_col )
{
p_vout->p_sys->pp_vout[i_vout].b_active = 1;
}
}
}
free( psz_method_tmp );
return VLC_SUCCESS;
}
/*****************************************************************************
* Init: initialize Wall video thread output method
*****************************************************************************/
static int Init( vout_thread_t *p_vout )
{
int i_index, i_row, i_col, i_width, i_height, i_left, i_top;
unsigned int i_target_width,i_target_height;
picture_t *p_pic;
video_format_t fmt = {0};
int i_aspect = 4*VOUT_ASPECT_FACTOR/3;
int i_align = 0;
unsigned int i_hstart, i_hend, i_vstart, i_vend;
unsigned int w1,h1,w2,h2;
int i_xpos, i_ypos;
int i_vstart_rounded = 0, i_hstart_rounded = 0;
char *psz_aspect;
psz_aspect = config_GetPsz( p_vout, "wall-element-aspect" );
if( psz_aspect && *psz_aspect )
{
char *psz_parser = strchr( psz_aspect, ':' );
if( psz_parser )
{
*psz_parser++ = '\0';
i_aspect = atoi( psz_aspect ) * VOUT_ASPECT_FACTOR
/ atoi( psz_parser );
}
else
{
msg_Warn( p_vout, "invalid aspect ratio specification" );
}
free( psz_aspect );
}
i_xpos = var_CreateGetInteger( p_vout, "video-x" );
i_ypos = var_CreateGetInteger( p_vout, "video-y" );
if( i_xpos < 0 ) i_xpos = 0;
if( i_ypos < 0 ) i_ypos = 0;
I_OUTPUTPICTURES = 0;
/* Initialize the output structure */
p_vout->output.i_chroma = p_vout->render.i_chroma;
p_vout->output.i_width = p_vout->render.i_width;
p_vout->output.i_height = p_vout->render.i_height;
p_vout->output.i_aspect = p_vout->render.i_aspect;
var_Create( p_vout, "align", VLC_VAR_INTEGER );
fmt.i_width = fmt.i_visible_width = p_vout->render.i_width;
fmt.i_height = fmt.i_visible_height = p_vout->render.i_height;
fmt.i_x_offset = fmt.i_y_offset = 0;
fmt.i_chroma = p_vout->render.i_chroma;
fmt.i_aspect = p_vout->render.i_aspect;
fmt.i_sar_num = p_vout->render.i_aspect * fmt.i_height / fmt.i_width;
fmt.i_sar_den = VOUT_ASPECT_FACTOR;
w1 = p_vout->output.i_width / p_vout->p_sys->i_col;
w1 &= ~1;
h1 = w1 * VOUT_ASPECT_FACTOR / i_aspect&~1;
h1 &= ~1;
h2 = p_vout->output.i_height / p_vout->p_sys->i_row&~1;
h2 &= ~1;
w2 = h2 * i_aspect / VOUT_ASPECT_FACTOR&~1;
w2 &= ~1;
if ( h1 * p_vout->p_sys->i_row < p_vout->output.i_height )
{
unsigned int i_tmp;
i_target_width = w2;
i_target_height = h2;
i_vstart = 0;
i_vend = p_vout->output.i_height;
i_tmp = i_target_width * p_vout->p_sys->i_col;
while( i_tmp < p_vout->output.i_width ) i_tmp += p_vout->p_sys->i_col;
i_hstart = (( i_tmp - p_vout->output.i_width ) / 2)&~1;
i_hstart_rounded = ( ( i_tmp - p_vout->output.i_width ) % 2 ) ||
( ( ( i_tmp - p_vout->output.i_width ) / 2 ) & 1 );
i_hend = i_hstart + p_vout->output.i_width;
}
else
{
unsigned int i_tmp;
i_target_height = h1;
i_target_width = w1;
i_hstart = 0;
i_hend = p_vout->output.i_width;
i_tmp = i_target_height * p_vout->p_sys->i_row;
while( i_tmp < p_vout->output.i_height ) i_tmp += p_vout->p_sys->i_row;
i_vstart = ( ( i_tmp - p_vout->output.i_height ) / 2 ) & ~1;
i_vstart_rounded = ( ( i_tmp - p_vout->output.i_height ) % 2 ) ||
( ( ( i_tmp - p_vout->output.i_height ) / 2 ) & 1 );
i_vend = i_vstart + p_vout->output.i_height;
}
msg_Dbg( p_vout, "target resolution %dx%d", i_target_width, i_target_height );
/* Try to open the real video output */
msg_Dbg( p_vout, "spawning the real video outputs" );
p_vout->p_sys->i_vout = 0;
msg_Dbg( p_vout, "target window (%d,%d)-(%d,%d)", i_hstart,i_vstart,i_hend,i_vend );
i_top = 0;
i_height = 0;
for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
{
i_left = 0;
i_top += i_height;
for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
{
i_align = 0;
if( i_col*i_target_width >= i_hstart &&
(i_col+1)*i_target_width <= i_hend )
{
i_width = i_target_width;
}
else if( ( i_col + 1 ) * i_target_width < i_hstart ||
( i_col * i_target_width ) > i_hend )
{
i_width = 0;
}
else
{
i_width = ( i_target_width - i_hstart % i_target_width );
if( i_col >= ( p_vout->p_sys->i_col / 2 ) )
{
i_align |= VOUT_ALIGN_LEFT;
i_width -= i_hstart_rounded ? 2: 0;
}
else
{
i_align |= VOUT_ALIGN_RIGHT;
}
}
if( i_row * i_target_height >= i_vstart &&
( i_row + 1 ) * i_target_height <= i_vend )
{
i_height = i_target_height;
}
else if( ( i_row + 1 ) * i_target_height < i_vstart ||
( i_row * i_target_height ) > i_vend )
{
i_height = 0;
}
else
{
i_height = ( i_target_height -
i_vstart%i_target_height );
if( i_row >= ( p_vout->p_sys->i_row / 2 ) )
{
i_align |= VOUT_ALIGN_TOP;
i_height -= i_vstart_rounded ? 2: 0;
}
else
{
i_align |= VOUT_ALIGN_BOTTOM;
}
}
if( i_height == 0 || i_width == 0 )
{
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active = VLC_FALSE;
}
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_width = i_width;
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_height = i_height;
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_left = i_left;
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].i_top = i_top;
i_left += i_width;
if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
{
p_vout->p_sys->i_vout++;
continue;
}
var_SetInteger( p_vout, "align", i_align );
var_SetInteger( p_vout, "video-x", i_left + i_xpos - i_width);
var_SetInteger( p_vout, "video-y", i_top + i_ypos );
fmt.i_width = fmt.i_visible_width = i_width;
fmt.i_height = fmt.i_visible_height = i_height;
fmt.i_aspect = i_aspect * i_target_height / i_height *
i_width / i_target_width;
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout =
vout_Create( p_vout, &fmt );
if( !p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout )
{
msg_Err( p_vout, "failed to get %ix%i vout threads",
p_vout->p_sys->i_col, p_vout->p_sys->i_row );
RemoveAllVout( p_vout );
return VLC_EGENERIC;
}
ADD_CALLBACKS(
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
SendEvents );
p_vout->p_sys->i_vout++;
}
}
ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
ADD_PARENT_CALLBACKS( SendEventsToChild );
return VLC_SUCCESS;
}
/*****************************************************************************
* End: terminate Wall video thread output method
*****************************************************************************/
static void End( vout_thread_t *p_vout )
{
int i_index;
/* Free the fake output buffers we allocated */
for( i_index = I_OUTPUTPICTURES ; i_index ; )
{
i_index--;
free( PP_OUTPUTPICTURE[ i_index ]->p_data_orig );
}
}
/*****************************************************************************
* Destroy: destroy Wall video thread output method
*****************************************************************************
* Terminate an output method created by WallCreateOutputMethod
*****************************************************************************/
static void Destroy( vlc_object_t *p_this )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
RemoveAllVout( p_vout );
DEL_PARENT_CALLBACKS( SendEventsToChild );
free( p_vout->p_sys->pp_vout );
free( p_vout->p_sys );
}
/*****************************************************************************
* Render: displays previously rendered output
*****************************************************************************
* This function send the currently rendered image to Wall image, waits
* until it is displayed and switch the two rendering buffers, preparing next
* frame.
*****************************************************************************/
static void Render( vout_thread_t *p_vout, picture_t *p_pic )
{
picture_t *p_outpic = NULL;
int i_col, i_row, i_vout, i_plane;
int pi_left_skip[VOUT_MAX_PLANES], pi_top_skip[VOUT_MAX_PLANES];
i_vout = 0;
for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
{
for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
{
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
pi_left_skip[i_plane] = p_vout->p_sys->pp_vout[ i_vout ].i_left * p_pic->p[ i_plane ].i_pitch / p_vout->output.i_width;
pi_top_skip[i_plane] = (p_vout->p_sys->pp_vout[ i_vout ].i_top * p_pic->p[ i_plane ].i_lines / p_vout->output.i_height)*p_pic->p[i_plane].i_pitch;
}
if( !p_vout->p_sys->pp_vout[ i_vout ].b_active )
{
i_vout++;
continue;
}
while( ( p_outpic =
vout_CreatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
0, 0, 0 )
) == NULL )
{
if( p_vout->b_die || p_vout->b_error )
{
vout_DestroyPicture(
p_vout->p_sys->pp_vout[ i_vout ].p_vout, p_outpic );
return;
}
msleep( VOUT_OUTMEM_SLEEP );
}
vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
p_outpic, p_pic->date );
vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
p_outpic );
for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
{
uint8_t *p_in, *p_in_end, *p_out;
int i_in_pitch = p_pic->p[i_plane].i_pitch;
int i_out_pitch = p_outpic->p[i_plane].i_pitch;
int i_copy_pitch = p_outpic->p[i_plane].i_visible_pitch;
p_in = p_pic->p[i_plane].p_pixels
+ pi_top_skip[i_plane] + pi_left_skip[i_plane];
p_in_end = p_in + p_outpic->p[i_plane].i_visible_lines
* p_pic->p[i_plane].i_pitch;
p_out = p_outpic->p[i_plane].p_pixels;
while( p_in < p_in_end )
{
p_vout->p_vlc->pf_memcpy( p_out, p_in, i_copy_pitch );
p_in += i_in_pitch;
p_out += i_out_pitch;
}
// pi_left_skip[i_plane] += i_copy_pitch;
}
vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
p_outpic );
vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ].p_vout,
p_outpic );
i_vout++;
}
/* for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ ) */
/* { */
/* pi_top_skip[i_plane] += p_vout->p_sys->pp_vout[ i_vout ].i_height */
/* * p_pic->p[i_plane].i_visible_lines */
/* / p_vout->output.i_height */
/* * p_pic->p[i_plane].i_pitch; */
/* } */
}
}
/*****************************************************************************
* RemoveAllVout: destroy all the child video output threads
*****************************************************************************/
static void RemoveAllVout( vout_thread_t *p_vout )
{
while( p_vout->p_sys->i_vout )
{
--p_vout->p_sys->i_vout;
if( p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].b_active )
{
DEL_CALLBACKS(
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout,
SendEvents );
vlc_object_detach(
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
vout_Destroy(
p_vout->p_sys->pp_vout[ p_vout->p_sys->i_vout ].p_vout );
}
}
}
/*****************************************************************************
* SendEvents: forward mouse and keyboard events to the parent p_vout
*****************************************************************************/
static int SendEvents( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *_p_vout )
{
vout_thread_t *p_vout = (vout_thread_t *)_p_vout;
int i_vout;
vlc_value_t sentval = newval;
/* Find the video output index */
for( i_vout = 0; i_vout < p_vout->p_sys->i_vout; i_vout++ )
{
if( p_this == (vlc_object_t *)p_vout->p_sys->pp_vout[ i_vout ].p_vout )
{
break;
}
}
if( i_vout == p_vout->p_sys->i_vout )
{
return VLC_EGENERIC;
}
/* Translate the mouse coordinates */
if( !strcmp( psz_var, "mouse-x" ) )
{
sentval.i_int += p_vout->output.i_width
* (i_vout % p_vout->p_sys->i_col)
/ p_vout->p_sys->i_col;
}
else if( !strcmp( psz_var, "mouse-y" ) )
{
sentval.i_int += p_vout->output.i_height
* (i_vout / p_vout->p_sys->i_row)
/ p_vout->p_sys->i_row;
}
var_Set( p_vout, psz_var, sentval );
return VLC_SUCCESS;
}
/*****************************************************************************
* SendEventsToChild: forward events to the child/children vout
*****************************************************************************/
static int SendEventsToChild( vlc_object_t *p_this, char const *psz_var,
vlc_value_t oldval, vlc_value_t newval, void *p_data )
{
vout_thread_t *p_vout = (vout_thread_t *)p_this;
int i_row, i_col, i_vout = 0;
for( i_row = 0; i_row < p_vout->p_sys->i_row; i_row++ )
{
for( i_col = 0; i_col < p_vout->p_sys->i_col; i_col++ )
{
var_Set( p_vout->p_sys->pp_vout[ i_vout ].p_vout, psz_var, newval);
if( !strcmp( psz_var, "fullscreen" ) ) break;
i_vout++;
}
}
return VLC_SUCCESS;
}
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