+/*****************************************************************************
+ * vout_aa.c: Aa video output display method for testing purposes
+ *****************************************************************************
+ * Copyright (C) 2002 VideoLAN
+ * $Id: aa.c,v 1.1 2002/03/19 14:00:50 sam Exp $
+ *
+ * Authors: Sigmund Augdal <sigmunau@idi.ntnu.no>
+ *
+ * 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> /* ENOMEM */
+#include <stdlib.h> /* free() */
+#include <string.h> /* strerror() */
+
+#include <aalib.h>
+
+#include <videolan/vlc.h>
+
+#include "video.h"
+#include "video_output.h"
+
+#define AA_MAX_DIRECTBUFFERS 1
+
+/*****************************************************************************
+ * 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( "ASCII-art video output module" )
+ ADD_CAPABILITY( VOUT, 10 )
+ ADD_SHORTCUT( "aa" )
+ ADD_SHORTCUT( "aalib" )
+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: aa video output method descriptor
+ *****************************************************************************
+ * This structure is part of the video output thread descriptor.
+ * It describes the aa specific properties of an output thread.
+ *****************************************************************************/
+typedef struct vout_sys_s
+{
+ struct aa_context* aa_context;
+ aa_palette palette;
+ int i_width; /* width of main window */
+ int i_height; /* height of main window */
+
+} vout_sys_t;
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static int vout_Create ( struct vout_thread_s * );
+static int vout_Init ( struct vout_thread_s * );
+static void vout_End ( struct vout_thread_s * );
+static void vout_Destroy ( struct vout_thread_s * );
+static int vout_Manage ( struct vout_thread_s * );
+static void vout_Render ( struct vout_thread_s *, struct picture_s * );
+static void vout_Display ( struct vout_thread_s *, struct picture_s * );
+
+static int NewPicture ( struct vout_thread_s *, struct picture_s * );
+static void SetPalette ( struct vout_thread_s *, u16 *, u16 *, u16 * );
+
+/*****************************************************************************
+ * 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 aa video thread output method
+ *****************************************************************************
+ * This function allocates and initializes a aa vout method.
+ *****************************************************************************/
+static int vout_Create( vout_thread_t *p_vout )
+{
+ /* Allocate structure */
+ p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
+ if( p_vout->p_sys == NULL )
+ {
+ intf_ErrMsg("error: %s", strerror(ENOMEM) );
+ return( 1 );
+ }
+
+ if (!(p_vout->p_sys->aa_context = aa_autoinit(&aa_defparams))) {
+ intf_ErrMsg("error: Cannot initialize AA-lib. Sorry");
+ return( 1 );
+ }
+ p_vout->p_sys->i_width = aa_imgwidth(p_vout->p_sys->aa_context);
+ p_vout->p_sys->i_height = aa_imgheight(p_vout->p_sys->aa_context);
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * vout_Init: initialize aa video thread output method
+ *****************************************************************************/
+static int vout_Init( vout_thread_t *p_vout )
+{
+ int i_index;
+ picture_t *p_pic;
+
+ I_OUTPUTPICTURES = 0;
+
+ p_vout->output.i_chroma = FOURCC_RGB2;
+ p_vout->output.i_width = p_vout->p_sys->i_width;
+ p_vout->output.i_height = p_vout->p_sys->i_height;
+ p_vout->output.i_aspect = p_vout->p_sys->i_width
+ * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
+ p_vout->output.pf_setpalette = SetPalette;
+
+
+ /* Try to initialize AA_MAX_DIRECTBUFFERS direct buffers */
+ while( I_OUTPUTPICTURES < AA_MAX_DIRECTBUFFERS )
+ {
+ p_pic = NULL;
+
+ /* Find an empty picture slot */
+ for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
+ {
+ if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
+ {
+ p_pic = p_vout->p_picture + i_index;
+ break;
+ }
+ }
+
+ /* Allocate the picture */
+ if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
+ {
+ break;
+ }
+
+ p_pic->i_status = DESTROYED_PICTURE;
+ p_pic->i_type = DIRECT_PICTURE;
+
+ PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
+
+ I_OUTPUTPICTURES++;
+ }
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * vout_End: terminate aa video thread output method
+ *****************************************************************************/
+static void vout_End( vout_thread_t *p_vout )
+{
+ ;
+}
+
+/*****************************************************************************
+ * vout_Destroy: destroy aa video thread output method
+ *****************************************************************************
+ * Terminate an output method created by AaCreateOutputMethod
+ *****************************************************************************/
+static void vout_Destroy( vout_thread_t *p_vout )
+{
+ aa_close(p_vout->p_sys->aa_context);
+ free( p_vout->p_sys );
+}
+
+/*****************************************************************************
+ * vout_Manage: handle aa 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: render previously calculated output
+ *****************************************************************************/
+static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ ;
+}
+
+/*****************************************************************************
+ * vout_Display: displays previously rendered output
+ *****************************************************************************/
+static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ /* No need to do anything, the fake direct buffers stay as they are */
+ int i_width, i_height, i_x, i_y;
+
+ vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height,
+ &i_x, &i_y, &i_width, &i_height );
+ // p_vout->p_sys->aa_context->imagebuffer = p_pic->p_data;
+ aa_fastrender(p_vout->p_sys->aa_context, 0, 0, aa_scrwidth(p_vout->p_sys->aa_context),
+ aa_scrheight(p_vout->p_sys->aa_context));
+ aa_flush(p_vout->p_sys->aa_context);
+
+}
+
+/*****************************************************************************
+ * NewPicture: allocate a picture
+ *****************************************************************************
+ * Returns 0 on success, -1 otherwise
+ *****************************************************************************/
+static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
+{
+ p_pic->p->p_pixels = aa_image(p_vout->p_sys->aa_context);
+ p_pic->p->i_pixel_bytes = 1;
+ p_pic->p->i_lines = p_vout->p_sys->i_height;
+ p_pic->p->i_pitch = p_vout->p_sys->i_width;
+ p_pic->p->b_margin = 0;
+ p_pic->i_planes = 1;
+
+ return( 0 );
+}
+
+/*****************************************************************************
+ * SetPalette: set the 8bpp palette
+ *****************************************************************************/
+static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue )
+{
+ int i;
+
+ /* Fill colors with color information */
+ for( i = 0; i < 256; i++ )
+ {
+ aa_setpalette( p_vout->p_sys->palette, 256 -i,
+ red[ i ], green[ i ], blue[ i ] );
+ }
+}
+