Commit cb2a5e40 authored by Laurent Aimar's avatar Laurent Aimar

* goom: visual effects using goom. (Not yet enabled)

parent 06c17625
/*****************************************************************************
* goom.c: based on libgoom (see http://ios.free.fr/?page=projet&quoi=1)
*****************************************************************************
* Copyright (C) 2003 VideoLAN
* $Id: goom.c,v 1.1 2003/08/23 17:23:45 fenrir Exp $
*
* Authors: Laurent Aimar
*
* 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> /* strdup() */
#include <errno.h>
#include <vlc/vlc.h>
#include <vlc/input.h>
#include <vlc/aout.h>
#include <vlc/vout.h>
#include "aout_internal.h"
#include "goom/goom_core.h"
#define GOOM_WIDTH 160
#define GOOM_HEIGHT 120
#define GOOM_ASPECT (VOUT_ASPECT_FACTOR*GOOM_WIDTH/GOOM_HEIGHT)
/*****************************************************************************
* Module descriptor
*****************************************************************************/
static int Open ( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("goom effect") );
set_capability( "audio filter", 0 );
set_callbacks( Open, Close );
add_shortcut( "goom" );
vlc_module_end();
/*****************************************************************************
* Local prototypes
*****************************************************************************/
typedef struct
{
VLC_COMMON_MEMBERS
vout_thread_t *p_vout;
char *psz_title;
vlc_mutex_t lock;
vlc_cond_t wait;
mtime_t i_pts;
int i_samples;
int16_t samples[2][512];
} goom_thread_t;
typedef struct aout_filter_sys_t
{
goom_thread_t *p_thread;
} aout_filter_sys_t;
static void DoWork ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
aout_buffer_t * );
static void Thread ( vlc_object_t * );
static char *TitleGet( vlc_object_t * );
/*****************************************************************************
* Open: open a scope effect plugin
*****************************************************************************/
static int Open( vlc_object_t *p_this )
{
aout_filter_t *p_filter = (aout_filter_t *)p_this;
aout_filter_sys_t *p_sys;
if ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2' )
|| p_filter->output.i_format != VLC_FOURCC('f','l','3','2') )
{
msg_Warn( p_filter, "Bad input or output format" );
return -1;
}
if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
{
msg_Warn( p_filter, "input and output formats are not similar" );
return -1;
}
p_filter->pf_do_work = DoWork;
p_filter->b_in_place = 1;
/* Allocate structure */
p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
/* Create goom thread */
p_sys->p_thread = vlc_object_create( p_filter,
sizeof( goom_thread_t ) );
p_sys->p_thread->p_vout = vout_Request( p_filter, NULL,
GOOM_WIDTH, GOOM_HEIGHT,
VLC_FOURCC('R','V','3','2'),
GOOM_ASPECT );
if( p_sys->p_thread->p_vout == NULL )
{
msg_Err( p_filter, "no suitable vout module" );
vlc_object_destroy( p_sys->p_thread );
free( p_filter->p_sys );
return VLC_EGENERIC;
}
vlc_mutex_init( p_filter, &p_sys->p_thread->lock );
vlc_cond_init( p_filter, &p_sys->p_thread->wait );
p_sys->p_thread->i_samples = 0;
memset( &p_sys->p_thread->samples, 0, 512*2*2 );
p_sys->p_thread->psz_title = TitleGet( VLC_OBJECT( p_filter ) );
if( vlc_thread_create( p_sys->p_thread, "Goom Update Thread", Thread,
VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
{
msg_Err( p_filter, "cannot lauch goom thread" );
vout_Destroy( p_sys->p_thread->p_vout );
vlc_mutex_destroy( &p_sys->p_thread->lock );
vlc_cond_destroy( &p_sys->p_thread->wait );
if( p_sys->p_thread->psz_title )
{
free( p_sys->p_thread->psz_title );
}
vlc_object_destroy( p_sys->p_thread );
free( p_filter->p_sys );
return VLC_EGENERIC;
}
return( 0 );
}
/*****************************************************************************
* Play: play a sound samples buffer
*****************************************************************************
* This function writes a buffer of i_length bytes in the socket
*****************************************************************************/
static inline int16_t FloatToInt16( float f )
{
if( f >= 1.0 )
return 32767;
else if( f < -1.0 )
return -32768;
else
return (int16_t)( f * 32768.0 );
}
static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
{
aout_filter_sys_t *p_sys = p_filter->p_sys;
int16_t *p_isample;
float *p_fsample = (float*)p_in_buf->p_buffer;
int i_samples = 0;
int i_channels = aout_FormatNbChannels( &p_filter->input );
p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
/* copy samples */
vlc_mutex_lock( &p_sys->p_thread->lock );
p_sys->p_thread->i_pts = p_in_buf->start_date;
if( p_sys->p_thread->i_samples >= 512 )
{
p_sys->p_thread->i_samples = 0;
}
p_isample = &p_sys->p_thread->samples[0][p_sys->p_thread->i_samples];
i_samples = __MIN( 512 - p_sys->p_thread->i_samples,
(int)p_out_buf->i_nb_samples );
p_sys->p_thread->i_samples += i_samples;
while( i_samples > 0 )
{
p_isample[0] = FloatToInt16( p_fsample[0] );
if( i_channels > 1 )
{
p_isample[512] = FloatToInt16( p_fsample[1] );
}
p_isample++;
p_fsample += i_channels;
i_samples--;
}
if( p_sys->p_thread->i_samples == 512 )
{
vlc_cond_signal( &p_sys->p_thread->wait );
}
vlc_mutex_unlock( &p_sys->p_thread->lock );
}
/*****************************************************************************
* Thread:
*****************************************************************************/
static void Thread( vlc_object_t *p_this )
{
goom_thread_t *p_thread = (goom_thread_t*)p_this;
goom_init( GOOM_WIDTH, GOOM_HEIGHT, 0 );
goom_set_font( NULL, NULL, NULL );
while( !p_thread->b_die )
{
mtime_t i_pts;
int16_t data[2][512];
uint32_t *plane;
picture_t *p_pic;
/* goom_update is damn slow, so just copy data and release the lock */
vlc_mutex_lock( &p_thread->lock );
vlc_cond_wait( &p_thread->wait, &p_thread->lock );
i_pts = p_thread->i_pts;
memcpy( data, p_thread->samples, 512 * 2 * 2 );
vlc_mutex_unlock( &p_thread->lock );
plane = goom_update( data, 0, 0.0, p_thread->psz_title, NULL );
if( p_thread->psz_title )
{
free( p_thread->psz_title );
p_thread->psz_title = NULL;
}
while( ( p_pic = vout_CreatePicture( p_thread->p_vout, 0, 0, 0 ) ) == NULL &&
!p_thread->b_die )
{
msleep( VOUT_OUTMEM_SLEEP );
}
if( p_thread->b_die || p_pic == NULL )
{
break;
}
memcpy( p_pic->p[0].p_pixels, plane, GOOM_WIDTH * GOOM_HEIGHT * 4 );
vout_DatePicture( p_thread->p_vout, p_pic, i_pts );
vout_DisplayPicture( p_thread->p_vout, p_pic );
}
goom_close();
}
/*****************************************************************************
* Close: close the plugin
*****************************************************************************/
static void Close( vlc_object_t *p_this )
{
aout_filter_t *p_filter = (aout_filter_t *)p_this;
aout_filter_sys_t *p_sys = p_filter->p_sys;
/* Stop Goom Thread */
p_sys->p_thread->b_die = VLC_TRUE;
vlc_mutex_lock( &p_sys->p_thread->lock );
vlc_cond_signal( &p_sys->p_thread->wait );
vlc_mutex_unlock( &p_sys->p_thread->lock );
vlc_thread_join( p_sys->p_thread );
/* Free data */
vout_Request( p_filter, p_sys->p_thread->p_vout, 0, 0, 0, 0 );
vlc_mutex_destroy( &p_sys->p_thread->lock );
vlc_cond_destroy( &p_sys->p_thread->wait );
vlc_object_destroy( p_sys->p_thread );
free( p_sys );
}
static char *TitleGet( vlc_object_t *p_this )
{
input_thread_t *p_input = vlc_object_find( p_this,
VLC_OBJECT_INPUT, FIND_ANYWHERE);
char *psz_title = NULL;
if( p_input )
{
char *psz = strrchr( p_input->psz_source, '/' );
if( psz )
{
psz++;
}
else
{
psz = p_input->psz_source;
}
if( psz && *psz )
{
psz_title = strdup( psz );
}
vlc_object_release( p_input );
}
return psz_title;
}
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