--- /dev/null
+/*****************************************************************************
+ * clone.c : Clone video plugin for vlc
+ *****************************************************************************
+ * Copyright (C) 2002 VideoLAN
+ * $Id: clone.c,v 1.1 2002/05/13 19:30:40 sam Exp $
+ *
+ * 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 <errno.h>
+#include <stdlib.h> /* malloc(), free() */
+#include <string.h>
+
+#include <videolan/vlc.h>
+
+#include "video.h"
+#include "video_output.h"
+
+#include "filter_common.h"
+
+/*****************************************************************************
+ * Capabilities defined in the other files.
+ *****************************************************************************/
+static void vout_getfunctions( function_list_t * p_function_list );
+
+/*****************************************************************************
+ * Build configuration tree.
+ *****************************************************************************/
+MODULE_CONFIG_START
+MODULE_CONFIG_STOP
+
+MODULE_INIT_START
+ SET_DESCRIPTION( _("image clone video module") )
+ /* Capability score set to 0 because we don't want to be spawned
+ * as a video output unless explicitly requested to */
+ ADD_CAPABILITY( VOUT, 0 )
+ ADD_SHORTCUT( "clone" )
+MODULE_INIT_STOP
+
+MODULE_ACTIVATE_START
+ vout_getfunctions( &p_module->p_functions->vout );
+MODULE_ACTIVATE_STOP
+
+MODULE_DEACTIVATE_START
+MODULE_DEACTIVATE_STOP
+
+/*****************************************************************************
+ * vout_sys_t: Clone video output method descriptor
+ *****************************************************************************
+ * This structure is part of the video output thread descriptor.
+ * It describes the Clone specific properties of an output thread.
+ *****************************************************************************/
+typedef struct vout_sys_s
+{
+ int i_clones;
+ vout_thread_t **pp_vout;
+
+} vout_sys_t;
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int vout_Create ( vout_thread_t * );
+static int vout_Init ( vout_thread_t * );
+static void vout_End ( vout_thread_t * );
+static void vout_Destroy ( vout_thread_t * );
+static int vout_Manage ( vout_thread_t * );
+static void vout_Render ( vout_thread_t *, picture_t * );
+static void vout_Display ( vout_thread_t *, picture_t * );
+
+static void RemoveAllVout ( vout_thread_t *p_vout );
+
+/*****************************************************************************
+ * Functions exported as capabilities. They are declared as static so that
+ * we don't pollute the namespace too much.
+ *****************************************************************************/
+static void vout_getfunctions( function_list_t * p_function_list )
+{
+ p_function_list->functions.vout.pf_create = vout_Create;
+ p_function_list->functions.vout.pf_init = vout_Init;
+ p_function_list->functions.vout.pf_end = vout_End;
+ p_function_list->functions.vout.pf_destroy = vout_Destroy;
+ p_function_list->functions.vout.pf_manage = vout_Manage;
+ p_function_list->functions.vout.pf_render = vout_Render;
+ p_function_list->functions.vout.pf_display = vout_Display;
+}
+
+/*****************************************************************************
+ * vout_Create: allocates Clone video thread output method
+ *****************************************************************************
+ * This function allocates and initializes a Clone vout method.
+ *****************************************************************************/
+static int vout_Create( vout_thread_t *p_vout )
+{
+ char *psz_method, *psz_method_orig;
+
+ /* Allocate structure */
+ p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
+ if( p_vout->p_sys == NULL )
+ {
+ intf_ErrMsg( "vout error: out of memory" );
+ return( 1 );
+ }
+
+ /* Look what method was requested */
+ if( !(psz_method = psz_method_orig = config_GetPszVariable( "filter" )) )
+ {
+ intf_ErrMsg( "vout error: configuration variable %s empty", "filter" );
+ return( 1 );
+ }
+
+ while( *psz_method && *psz_method != ':' )
+ {
+ psz_method++;
+ }
+
+ if( *psz_method )
+ {
+ p_vout->p_sys->i_clones = atoi( psz_method + 1 );
+ }
+ else
+ {
+ intf_ErrMsg( "vout error: "
+ "no valid clone count provided, using clone:2" );
+ p_vout->p_sys->i_clones = 2;
+ }
+
+ p_vout->p_sys->i_clones = __MAX( 1, __MIN( 99, p_vout->p_sys->i_clones ) );
+
+ intf_WarnMsg( 3, "vout info: spawning %i clone(s)",
+ p_vout->p_sys->i_clones );
+
+ p_vout->p_sys->pp_vout = malloc( p_vout->p_sys->i_clones *
+ sizeof(vout_thread_t *) );
+ if( p_vout->p_sys->pp_vout == NULL )
+ {
+ intf_ErrMsg( "vout error: out of memory" );
+ free( psz_method_orig );
+ free( p_vout->p_sys );
+ return( 1 );
+ }
+
+ free( psz_method_orig );
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * vout_Init: initialize Clone video thread output method
+ *****************************************************************************/
+static int vout_Init( vout_thread_t *p_vout )
+{
+ int i_index, i_vout;
+ char *psz_filter;
+ picture_t *p_pic;
+
+ 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;
+
+ /* Try to open the real video output */
+ psz_filter = config_GetPszVariable( "filter" );
+ config_PutPszVariable( "filter", NULL );
+
+ intf_WarnMsg( 3, "vout info: spawning the real video outputs" );
+
+ for( i_vout = 0; i_vout < p_vout->p_sys->i_clones; i_vout++ )
+ {
+ p_vout->p_sys->pp_vout[ i_vout ] =
+ vout_CreateThread( NULL,
+ p_vout->render.i_width, p_vout->render.i_height,
+ p_vout->render.i_chroma, p_vout->render.i_aspect );
+ if( p_vout->p_sys->pp_vout[ i_vout ] == NULL )
+ {
+ intf_ErrMsg( "vout error: failed to clone %i vout threads",
+ p_vout->p_sys->i_clones );
+ p_vout->p_sys->i_clones = i_vout;
+ RemoveAllVout( p_vout );
+ config_PutPszVariable( "filter", psz_filter );
+ if( psz_filter ) free( psz_filter );
+ return 0;
+ }
+ }
+
+ config_PutPszVariable( "filter", psz_filter );
+ if( psz_filter ) free( psz_filter );
+
+ ALLOCATE_DIRECTBUFFERS( VOUT_MAX_PICTURES );
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * vout_End: terminate Clone video thread output method
+ *****************************************************************************/
+static void vout_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 );
+ }
+}
+
+/*****************************************************************************
+ * vout_Destroy: destroy Clone video thread output method
+ *****************************************************************************
+ * Terminate an output method created by CloneCreateOutputMethod
+ *****************************************************************************/
+static void vout_Destroy( vout_thread_t *p_vout )
+{
+ RemoveAllVout( p_vout );
+
+ free( p_vout->p_sys->pp_vout );
+ free( p_vout->p_sys );
+}
+
+/*****************************************************************************
+ * vout_Manage: handle Clone events
+ *****************************************************************************
+ * This function should be called regularly by video output thread. It manages
+ * console events. It returns a non null value on error.
+ *****************************************************************************/
+static int vout_Manage( vout_thread_t *p_vout )
+{
+ return( 0 );
+}
+
+/*****************************************************************************
+ * vout_Render: displays previously rendered output
+ *****************************************************************************
+ * This function send the currently rendered image to Clone image, waits
+ * until it is displayed and switch the two rendering buffers, preparing next
+ * frame.
+ *****************************************************************************/
+static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ picture_t *p_outpic = NULL;
+ int i_vout, i_plane;
+
+ for( i_vout = 0; i_vout < p_vout->p_sys->i_clones; i_vout++ )
+ {
+ while( ( p_outpic =
+ vout_CreatePicture( p_vout->p_sys->pp_vout[ i_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_outpic );
+ return;
+ }
+
+ msleep( VOUT_OUTMEM_SLEEP );
+ }
+
+ vout_DatePicture( p_vout->p_sys->pp_vout[ i_vout ],
+ p_outpic, p_pic->date );
+ vout_LinkPicture( p_vout->p_sys->pp_vout[ i_vout ], p_outpic );
+
+ for( i_plane = 0 ; i_plane < p_pic->i_planes ; i_plane++ )
+ {
+ u8 *p_in, *p_in_end, *p_out;
+ int i_in_pitch = p_pic->p[i_plane].i_pitch;
+ const int i_out_pitch = p_outpic->p[i_plane].i_pitch;
+
+ p_in = p_pic->p[i_plane].p_pixels;
+
+ p_in_end = p_in + p_outpic->p[i_plane].i_lines
+ * p_pic->p[i_plane].i_pitch;
+
+ p_out = p_outpic->p[i_plane].p_pixels;
+
+ while( p_in < p_in_end )
+ {
+ FAST_MEMCPY( p_out, p_in, i_out_pitch );
+ p_in += i_in_pitch;
+ p_out += i_out_pitch;
+ }
+ }
+
+ vout_UnlinkPicture( p_vout->p_sys->pp_vout[ i_vout ], p_outpic );
+ vout_DisplayPicture( p_vout->p_sys->pp_vout[ i_vout ], p_outpic );
+ }
+}
+
+/*****************************************************************************
+ * vout_Display: displays previously rendered output
+ *****************************************************************************
+ * This function send the currently rendered image to Invert image, waits
+ * until it is displayed and switch the two rendering buffers, preparing next
+ * frame.
+ *****************************************************************************/
+static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ ;
+}
+
+/*****************************************************************************
+ * RemoveAllVout: destroy all the child video output threads
+ *****************************************************************************/
+static void RemoveAllVout( vout_thread_t *p_vout )
+{
+ while( p_vout->p_sys->i_clones )
+ {
+ --p_vout->p_sys->i_clones;
+ vout_DestroyThread(
+ p_vout->p_sys->pp_vout[ p_vout->p_sys->i_clones ], NULL );
+ }
+}
+
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