Sam Hocevar
25 years ago
14 changed files with 856 additions and 478 deletions
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usr/lib/videolan/vlc |
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usr/share/doc |
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.dep |
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*.lo |
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*.o.* |
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*.lo.* |
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aa_SOURCES = aa.c |
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/*****************************************************************************
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* vout_aa.c: Aa video output display method for testing purposes |
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***************************************************************************** |
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* Copyright (C) 2002 VideoLAN |
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* $Id: aa.c,v 1.1 2002/03/19 14:00:50 sam Exp $ |
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* |
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* Authors: Sigmund Augdal <sigmunau@idi.ntnu.no> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. |
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*****************************************************************************/ |
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/*****************************************************************************
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* Preamble |
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*****************************************************************************/ |
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#include <errno.h> /* ENOMEM */ |
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#include <stdlib.h> /* free() */ |
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#include <string.h> /* strerror() */ |
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#include <aalib.h> |
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#include <videolan/vlc.h> |
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#include "video.h" |
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#include "video_output.h" |
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#define AA_MAX_DIRECTBUFFERS 1 |
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/*****************************************************************************
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* Capabilities defined in the other files. |
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*****************************************************************************/ |
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static void vout_getfunctions ( function_list_t * p_function_list ); |
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/*****************************************************************************
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* Build configuration tree. |
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*****************************************************************************/ |
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MODULE_CONFIG_START |
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MODULE_CONFIG_STOP |
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MODULE_INIT_START |
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SET_DESCRIPTION( "ASCII-art video output module" ) |
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ADD_CAPABILITY( VOUT, 10 ) |
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ADD_SHORTCUT( "aa" ) |
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ADD_SHORTCUT( "aalib" ) |
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MODULE_INIT_STOP |
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MODULE_ACTIVATE_START |
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vout_getfunctions( &p_module->p_functions->vout ); |
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MODULE_ACTIVATE_STOP |
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MODULE_DEACTIVATE_START |
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MODULE_DEACTIVATE_STOP |
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/*****************************************************************************
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* vout_sys_t: aa video output method descriptor |
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***************************************************************************** |
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* This structure is part of the video output thread descriptor. |
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* It describes the aa specific properties of an output thread. |
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*****************************************************************************/ |
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typedef struct vout_sys_s |
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{ |
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struct aa_context* aa_context; |
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aa_palette palette; |
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int i_width; /* width of main window */ |
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int i_height; /* height of main window */ |
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} vout_sys_t; |
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/*****************************************************************************
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* Local prototypes |
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*****************************************************************************/ |
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static int vout_Create ( struct vout_thread_s * ); |
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static int vout_Init ( struct vout_thread_s * ); |
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static void vout_End ( struct vout_thread_s * ); |
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static void vout_Destroy ( struct vout_thread_s * ); |
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static int vout_Manage ( struct vout_thread_s * ); |
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static void vout_Render ( struct vout_thread_s *, struct picture_s * ); |
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static void vout_Display ( struct vout_thread_s *, struct picture_s * ); |
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static int NewPicture ( struct vout_thread_s *, struct picture_s * ); |
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static void SetPalette ( struct vout_thread_s *, u16 *, u16 *, u16 * ); |
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/*****************************************************************************
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* Functions exported as capabilities. They are declared as static so that |
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* we don't pollute the namespace too much. |
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*****************************************************************************/ |
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static void vout_getfunctions( function_list_t * p_function_list ) |
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{ |
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p_function_list->functions.vout.pf_create = vout_Create; |
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p_function_list->functions.vout.pf_init = vout_Init; |
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p_function_list->functions.vout.pf_end = vout_End; |
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p_function_list->functions.vout.pf_destroy = vout_Destroy; |
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p_function_list->functions.vout.pf_manage = vout_Manage; |
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p_function_list->functions.vout.pf_render = vout_Render; |
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p_function_list->functions.vout.pf_display = vout_Display; |
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} |
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/*****************************************************************************
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* vout_Create: allocates aa video thread output method |
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***************************************************************************** |
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* This function allocates and initializes a aa vout method. |
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*****************************************************************************/ |
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static int vout_Create( vout_thread_t *p_vout ) |
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{ |
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/* Allocate structure */ |
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p_vout->p_sys = malloc( sizeof( vout_sys_t ) ); |
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if( p_vout->p_sys == NULL ) |
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{ |
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intf_ErrMsg("error: %s", strerror(ENOMEM) ); |
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return( 1 ); |
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} |
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if (!(p_vout->p_sys->aa_context = aa_autoinit(&aa_defparams))) { |
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intf_ErrMsg("error: Cannot initialize AA-lib. Sorry"); |
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return( 1 ); |
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} |
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p_vout->p_sys->i_width = aa_imgwidth(p_vout->p_sys->aa_context); |
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p_vout->p_sys->i_height = aa_imgheight(p_vout->p_sys->aa_context); |
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return( 0 ); |
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} |
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/*****************************************************************************
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* vout_Init: initialize aa video thread output method |
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*****************************************************************************/ |
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static int vout_Init( vout_thread_t *p_vout ) |
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{ |
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int i_index; |
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picture_t *p_pic; |
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I_OUTPUTPICTURES = 0; |
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p_vout->output.i_chroma = FOURCC_RGB2; |
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p_vout->output.i_width = p_vout->p_sys->i_width; |
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p_vout->output.i_height = p_vout->p_sys->i_height; |
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p_vout->output.i_aspect = p_vout->p_sys->i_width |
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* VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height; |
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p_vout->output.pf_setpalette = SetPalette; |
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/* Try to initialize AA_MAX_DIRECTBUFFERS direct buffers */ |
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while( I_OUTPUTPICTURES < AA_MAX_DIRECTBUFFERS ) |
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{ |
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p_pic = NULL; |
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/* Find an empty picture slot */ |
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for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ ) |
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{ |
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if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE ) |
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{ |
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p_pic = p_vout->p_picture + i_index; |
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break; |
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} |
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} |
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/* Allocate the picture */ |
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if( p_pic == NULL || NewPicture( p_vout, p_pic ) ) |
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{ |
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break; |
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} |
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p_pic->i_status = DESTROYED_PICTURE; |
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p_pic->i_type = DIRECT_PICTURE; |
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PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic; |
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I_OUTPUTPICTURES++; |
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} |
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return( 0 ); |
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} |
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/*****************************************************************************
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* vout_End: terminate aa video thread output method |
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*****************************************************************************/ |
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static void vout_End( vout_thread_t *p_vout ) |
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{ |
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; |
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} |
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/*****************************************************************************
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* vout_Destroy: destroy aa video thread output method |
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***************************************************************************** |
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* Terminate an output method created by AaCreateOutputMethod |
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*****************************************************************************/ |
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static void vout_Destroy( vout_thread_t *p_vout ) |
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{ |
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aa_close(p_vout->p_sys->aa_context); |
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free( p_vout->p_sys ); |
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} |
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/*****************************************************************************
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* vout_Manage: handle aa events |
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***************************************************************************** |
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* This function should be called regularly by video output thread. It manages |
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* console events. It returns a non null value on error. |
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*****************************************************************************/ |
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static int vout_Manage( vout_thread_t *p_vout ) |
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{ |
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return( 0 ); |
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} |
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/*****************************************************************************
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* vout_Render: render previously calculated output |
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*****************************************************************************/ |
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static void vout_Render( vout_thread_t *p_vout, picture_t *p_pic ) |
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{ |
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; |
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} |
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/*****************************************************************************
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* vout_Display: displays previously rendered output |
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*****************************************************************************/ |
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static void vout_Display( vout_thread_t *p_vout, picture_t *p_pic ) |
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{ |
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/* No need to do anything, the fake direct buffers stay as they are */ |
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int i_width, i_height, i_x, i_y; |
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vout_PlacePicture( p_vout, p_vout->p_sys->i_width, p_vout->p_sys->i_height, |
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&i_x, &i_y, &i_width, &i_height ); |
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// p_vout->p_sys->aa_context->imagebuffer = p_pic->p_data;
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aa_fastrender(p_vout->p_sys->aa_context, 0, 0, aa_scrwidth(p_vout->p_sys->aa_context), |
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aa_scrheight(p_vout->p_sys->aa_context)); |
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aa_flush(p_vout->p_sys->aa_context); |
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} |
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/*****************************************************************************
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* NewPicture: allocate a picture |
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***************************************************************************** |
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* Returns 0 on success, -1 otherwise |
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*****************************************************************************/ |
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static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic ) |
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{ |
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p_pic->p->p_pixels = aa_image(p_vout->p_sys->aa_context); |
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p_pic->p->i_pixel_bytes = 1; |
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p_pic->p->i_lines = p_vout->p_sys->i_height; |
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p_pic->p->i_pitch = p_vout->p_sys->i_width; |
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p_pic->p->b_margin = 0; |
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p_pic->i_planes = 1; |
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return( 0 ); |
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} |
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/*****************************************************************************
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* SetPalette: set the 8bpp palette |
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*****************************************************************************/ |
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static void SetPalette( vout_thread_t *p_vout, u16 *red, u16 *green, u16 *blue ) |
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{ |
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int i; |
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/* Fill colors with color information */ |
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for( i = 0; i < 256; i++ ) |
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{ |
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aa_setpalette( p_vout->p_sys->palette, 256 -i, |
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red[ i ], green[ i ], blue[ i ] ); |
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} |
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} |
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