2002-08-04 19:23:44 +02:00
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/*****************************************************************************
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* ggi.c : GGI plugin for vlc
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*****************************************************************************
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* Copyright (C) 2000, 2001 VideoLAN
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2002-08-13 13:59:36 +02:00
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* $Id: ggi.c,v 1.1 2002/08/13 11:59:36 sam Exp $
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2002-08-04 19:23:44 +02:00
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*
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* Authors: Vincent Seguin <seguin@via.ecp.fr>
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* Samuel Hocevar <sam@zoy.org>
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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 <stdlib.h> /* malloc(), free() */
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#include <string.h>
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#include <errno.h> /* ENOMEM */
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#include <ggi/ggi.h>
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#include <vlc/vlc.h>
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#include <vlc/intf.h>
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#include <vlc/vout.h>
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static int Create ( vlc_object_t * );
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static void Destroy ( vlc_object_t * );
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static int Init ( vout_thread_t * );
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static void End ( vout_thread_t * );
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static int Manage ( vout_thread_t * );
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static void Display ( vout_thread_t *, picture_t * );
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static int OpenDisplay ( vout_thread_t * );
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static void CloseDisplay ( vout_thread_t * );
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static void SetPalette ( vout_thread_t *, u16 *, u16 *, u16 * );
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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#define DISPLAY_TEXT N_("X11 display name")
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#define DISPLAY_LONGTEXT N_("Specify the X11 hardware display you want to use."\
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"\nBy default vlc will use the value of the DISPLAY"\
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" environment variable.")
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vlc_module_begin();
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add_category_hint( N_("Miscellaneous"), NULL );
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add_string( "ggi-display", NULL, NULL, DISPLAY_TEXT, DISPLAY_LONGTEXT );
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set_description( "General Graphics Interface video output" );
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set_capability( "video output", 30 );
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set_callbacks( Create, Destroy );
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vlc_module_end();
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/*****************************************************************************
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* vout_sys_t: video output GGI 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 GGI specific properties of an output thread.
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*****************************************************************************/
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struct vout_sys_t
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{
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/* GGI system informations */
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ggi_visual_t p_display; /* display device */
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ggi_mode mode; /* mode descriptor */
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int i_bits_per_pixel;
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/* Buffer information */
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ggi_directbuffer * pp_buffer[2]; /* buffers */
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int i_index;
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vlc_bool_t b_must_acquire; /* must be acquired before writing */
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};
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/*****************************************************************************
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* Create: allocate GGI video thread output method
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*****************************************************************************
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* This function allocate and initialize a GGI vout method. It uses some of the
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* vout properties to choose the correct mode, and change them according to the
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* mode actually used.
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*****************************************************************************/
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static int Create( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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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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msg_Err( p_vout, "out of memory" );
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return( 1 );
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}
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/* Open and initialize device */
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if( OpenDisplay( p_vout ) )
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{
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msg_Err( p_vout, "cannot initialize GGI display" );
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free( p_vout->p_sys );
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return( 1 );
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}
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p_vout->pf_init = Init;
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p_vout->pf_end = End;
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p_vout->pf_manage = Manage;
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p_vout->pf_render = NULL;
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p_vout->pf_display = Display;
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return( 0 );
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}
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/*****************************************************************************
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* Init: initialize GGI video thread output method
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*****************************************************************************
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* This function initialize the GGI display device.
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*****************************************************************************/
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static int Init( vout_thread_t *p_vout )
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{
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#define p_b p_vout->p_sys->pp_buffer
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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_width = p_vout->p_sys->mode.visible.x;
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p_vout->output.i_height = p_vout->p_sys->mode.visible.y;
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p_vout->output.i_aspect = p_vout->p_sys->mode.visible.x
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* VOUT_ASPECT_FACTOR
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/ p_vout->p_sys->mode.visible.y;
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switch( p_vout->p_sys->i_bits_per_pixel )
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{
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case 8:
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p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
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p_vout->output.pf_setpalette = SetPalette;
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break;
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case 15:
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p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
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case 16:
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p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
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case 24:
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p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
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case 32:
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p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
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default:
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msg_Err( p_vout, "unknown screen depth %i",
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p_vout->p_sys->i_bits_per_pixel );
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return 0;
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}
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/* Only useful for bits_per_pixel != 8 */
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p_vout->output.i_rmask = p_b[ 0 ]->buffer.plb.pixelformat->red_mask;
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p_vout->output.i_gmask = p_b[ 0 ]->buffer.plb.pixelformat->green_mask;
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p_vout->output.i_bmask = p_b[ 0 ]->buffer.plb.pixelformat->blue_mask;
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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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if( p_pic == NULL )
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{
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return 0;
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}
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/* We know the chroma, allocate a buffer which will be used
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* directly by the decoder */
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p_vout->p_sys->i_index = 0;
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p_pic->p->p_pixels = p_b[ 0 ]->write;
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p_pic->p->i_pixel_pitch = p_b[ 0 ]->buffer.plb.pixelformat->size / 8;
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p_pic->p->i_lines = p_vout->p_sys->mode.visible.y;
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p_pic->p->i_pitch = p_b[ 0 ]->buffer.plb.stride;
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if( p_b[ 0 ]->buffer.plb.pixelformat->size / 8
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* p_vout->p_sys->mode.visible.x
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!= p_b[ 0 ]->buffer.plb.stride )
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{
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p_pic->p->i_visible_pitch = p_b[ 0 ]->buffer.plb.pixelformat->size
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/ 8 * p_vout->p_sys->mode.visible.x;
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}
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else
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{
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p_pic->p->i_visible_pitch = p_b[ 0 ]->buffer.plb.stride;
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}
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p_pic->i_planes = 1;
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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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/* Acquire first buffer */
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if( p_vout->p_sys->b_must_acquire )
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{
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ggiResourceAcquire( p_b[ 0 ]->resource,
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GGI_ACTYPE_WRITE );
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}
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/* Listen to the keyboard and the mouse buttons */
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ggiSetEventMask( p_vout->p_sys->p_display,
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emKeyboard | emPtrButtonPress | emPtrButtonRelease );
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/* Set asynchronous display mode -- usually quite faster */
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ggiAddFlags( p_vout->p_sys->p_display, GGIFLAG_ASYNC );
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return( 0 );
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#undef p_b
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}
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/*****************************************************************************
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* End: terminate GGI video thread output method
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*****************************************************************************
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* Terminate an output method created by Create
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*****************************************************************************/
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static void End( vout_thread_t *p_vout )
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{
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#define p_b p_vout->p_sys->pp_buffer
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/* Release buffer */
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if( p_vout->p_sys->b_must_acquire )
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{
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ggiResourceRelease( p_b[ p_vout->p_sys->i_index ]->resource );
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}
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#undef p_b
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}
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/*****************************************************************************
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* Destroy: destroy GGI video thread output method
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*****************************************************************************
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* Terminate an output method created by Create
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*****************************************************************************/
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static void Destroy( vlc_object_t *p_this )
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{
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vout_thread_t *p_vout = (vout_thread_t *)p_this;
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CloseDisplay( p_vout );
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free( p_vout->p_sys );
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}
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/*****************************************************************************
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* Manage: handle GGI events
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*****************************************************************************
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* This function should be called regularly by video output thread. It returns
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* a non null value if an error occured.
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*****************************************************************************/
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static int Manage( vout_thread_t *p_vout )
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{
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struct timeval tv = { 0, 1000 }; /* 1 millisecond */
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gii_event_mask mask;
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gii_event event;
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mask = emKeyboard | emPtrButtonPress | emPtrButtonRelease;
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ggiEventPoll( p_vout->p_sys->p_display, mask, &tv );
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while( ggiEventsQueued( p_vout->p_sys->p_display, mask) )
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{
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ggiEventRead( p_vout->p_sys->p_display, &event, mask);
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switch( event.any.type )
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{
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case evKeyRelease:
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switch( event.key.sym )
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{
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case 'q':
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case 'Q':
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case GIIUC_Escape:
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/* FIXME pass message ! */
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p_vout->p_vlc->b_die = 1;
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break;
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default:
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break;
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}
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break;
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case evPtrButtonRelease:
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switch( event.pbutton.button )
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{
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case GII_PBUTTON_RIGHT:
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{
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intf_thread_t *p_intf;
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p_intf = vlc_object_find( p_vout, VLC_OBJECT_INTF,
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FIND_ANYWHERE );
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if( p_intf )
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{
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p_intf->b_menu_change = 1;
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vlc_object_release( p_intf );
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}
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}
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break;
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}
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break;
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default:
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break;
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}
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}
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return( 0 );
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}
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/*****************************************************************************
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* Display: displays previously rendered output
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*****************************************************************************/
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static void Display( vout_thread_t *p_vout, picture_t *p_pic )
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{
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#define p_b p_vout->p_sys->pp_buffer
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p_pic->p->p_pixels = p_b[ p_vout->p_sys->i_index ]->write;
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/* Change display frame */
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if( p_vout->p_sys->b_must_acquire )
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{
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ggiResourceRelease( p_b[ p_vout->p_sys->i_index ]->resource );
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}
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ggiSetDisplayFrame( p_vout->p_sys->p_display,
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p_b[ p_vout->p_sys->i_index ]->frame );
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/* Swap buffers and change write frame */
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p_vout->p_sys->i_index ^= 1;
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p_pic->p->p_pixels = p_b[ p_vout->p_sys->i_index ]->write;
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if( p_vout->p_sys->b_must_acquire )
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{
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ggiResourceAcquire( p_b[ p_vout->p_sys->i_index ]->resource,
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GGI_ACTYPE_WRITE );
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}
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ggiSetWriteFrame( p_vout->p_sys->p_display,
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p_b[ p_vout->p_sys->i_index ]->frame );
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/* Flush the output so that it actually displays */
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ggiFlush( p_vout->p_sys->p_display );
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#undef p_b
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}
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/* following functions are local */
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/*****************************************************************************
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* OpenDisplay: open and initialize GGI device
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*****************************************************************************
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* Open and initialize display according to preferences specified in the vout
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* thread fields.
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*****************************************************************************/
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static int OpenDisplay( vout_thread_t *p_vout )
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{
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#define p_b p_vout->p_sys->pp_buffer
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ggi_color col_fg; /* foreground color */
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ggi_color col_bg; /* background color */
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int i_index; /* all purposes index */
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char *psz_display;
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/* Initialize library */
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if( ggiInit() )
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{
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msg_Err( p_vout, "cannot initialize GGI library" );
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return( 1 );
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}
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/* Open display */
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psz_display = config_GetPsz( p_vout, "ggi_display" );
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p_vout->p_sys->p_display = ggiOpen( psz_display, NULL );
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if( psz_display ) free( psz_display );
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if( p_vout->p_sys->p_display == NULL )
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{
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msg_Err( p_vout, "cannot open GGI default display" );
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ggiExit();
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return( 1 );
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}
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/* Find most appropriate mode */
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p_vout->p_sys->mode.frames = 2; /* 2 buffers */
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p_vout->p_sys->mode.visible.x = config_GetInt( p_vout, "width" );
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p_vout->p_sys->mode.visible.y = config_GetInt( p_vout, "height" );
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p_vout->p_sys->mode.virt.x = GGI_AUTO;
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p_vout->p_sys->mode.virt.y = GGI_AUTO;
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p_vout->p_sys->mode.size.x = GGI_AUTO;
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p_vout->p_sys->mode.size.y = GGI_AUTO;
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p_vout->p_sys->mode.graphtype = GT_15BIT; /* minimum usable depth */
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p_vout->p_sys->mode.dpp.x = GGI_AUTO;
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p_vout->p_sys->mode.dpp.y = GGI_AUTO;
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ggiCheckMode( p_vout->p_sys->p_display, &p_vout->p_sys->mode );
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/* FIXME: Check that returned mode has some minimum properties */
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/* Set mode */
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if( ggiSetMode( p_vout->p_sys->p_display, &p_vout->p_sys->mode ) )
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{
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msg_Err( p_vout, "cannot set GGI mode" );
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ggiClose( p_vout->p_sys->p_display );
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ggiExit();
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return( 1 );
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}
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/* Check buffers properties */
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p_vout->p_sys->b_must_acquire = 0;
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for( i_index = 0; i_index < 2; i_index++ )
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{
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/* Get buffer address */
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p_vout->p_sys->pp_buffer[ i_index ] =
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(ggi_directbuffer *)ggiDBGetBuffer( p_vout->p_sys->p_display,
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i_index );
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if( p_b[ i_index ] == NULL )
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{
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msg_Err( p_vout, "double buffering is not possible" );
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ggiClose( p_vout->p_sys->p_display );
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ggiExit();
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return( 1 );
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}
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/* Check buffer properties */
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if( ! ( p_b[ i_index ]->type & GGI_DB_SIMPLE_PLB )
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|| ( p_b[ i_index ]->page_size != 0 )
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|| ( p_b[ i_index ]->write == NULL )
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|| ( p_b[ i_index ]->noaccess != 0 )
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|| ( p_b[ i_index ]->align != 0 ) )
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{
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msg_Err( p_vout, "incorrect video memory type" );
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ggiClose( p_vout->p_sys->p_display );
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ggiExit();
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return( 1 );
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}
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/* Check if buffer needs to be acquired before write */
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if( ggiResourceMustAcquire( p_b[ i_index ]->resource ) )
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{
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p_vout->p_sys->b_must_acquire = 1;
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}
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}
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/* Set graphic context colors */
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col_fg.r = col_fg.g = col_fg.b = -1;
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col_bg.r = col_bg.g = col_bg.b = 0;
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if( ggiSetGCForeground(p_vout->p_sys->p_display,
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ggiMapColor(p_vout->p_sys->p_display,&col_fg)) ||
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ggiSetGCBackground(p_vout->p_sys->p_display,
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ggiMapColor(p_vout->p_sys->p_display,&col_bg)) )
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{
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msg_Err( p_vout, "cannot set colors" );
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ggiClose( p_vout->p_sys->p_display );
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ggiExit();
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return( 1 );
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}
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/* Set clipping for text */
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if( ggiSetGCClipping( p_vout->p_sys->p_display, 0, 0,
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p_vout->p_sys->mode.visible.x,
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p_vout->p_sys->mode.visible.y ) )
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{
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msg_Err( p_vout, "cannot set clipping" );
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ggiClose( p_vout->p_sys->p_display );
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ggiExit();
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return( 1 );
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}
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/* FIXME: set palette in 8bpp */
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p_vout->p_sys->i_bits_per_pixel = p_b[ 0 ]->buffer.plb.pixelformat->depth;
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return( 0 );
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#undef p_b
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}
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/*****************************************************************************
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* CloseDisplay: close and reset GGI device
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*****************************************************************************
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* This function returns all resources allocated by OpenDisplay and restore
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* the original state of the device.
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*****************************************************************************/
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static void CloseDisplay( vout_thread_t *p_vout )
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{
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/* Restore original mode and close display */
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ggiClose( p_vout->p_sys->p_display );
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/* Exit library */
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ggiExit();
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}
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/*****************************************************************************
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* SetPalette: sets an 8 bpp 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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ggi_color colors[256];
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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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colors[ i ].r = red[ i ];
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colors[ i ].g = green[ i ];
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colors[ i ].b = blue[ i ];
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colors[ i ].a = 0;
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}
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/* Set palette */
|
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if( ggiSetPalette( p_vout->p_sys->p_display, 0, 256, colors ) < 0 )
|
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{
|
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msg_Err( p_vout, "failed setting palette" );
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}
|
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|
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}
|
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