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329 lines
9.1 KiB
329 lines
9.1 KiB
/*****************************************************************************
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* aa.c: "vout display" module using aalib
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*****************************************************************************
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* Copyright (C) 2002-2009 VLC authors and VideoLAN
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* $Id$
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*
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* Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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/*****************************************************************************
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* Preamble
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_vout_display.h>
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#include <vlc_picture_pool.h>
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#include <assert.h>
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#include <aalib.h>
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#ifndef _WIN32
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# ifdef X_DISPLAY_MISSING
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# error Xlib required due to XInitThreads
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# endif
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# include <vlc_xlib.h>
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#endif
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/* TODO
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* - what about RGB palette ?
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*/
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/*****************************************************************************
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* Module descriptor
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*****************************************************************************/
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static int Open (vlc_object_t *);
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static void Close(vlc_object_t *);
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vlc_module_begin()
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set_shortname(N_("ASCII Art"))
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set_category(CAT_VIDEO)
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set_subcategory(SUBCAT_VIDEO_VOUT)
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set_description(N_("ASCII-art video output"))
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set_capability("vout display", /*10*/0)
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add_shortcut("aalib")
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set_callbacks(Open, Close)
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vlc_module_end()
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/*****************************************************************************
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* Local prototypes
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*****************************************************************************/
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static picture_pool_t *Pool (vout_display_t *, unsigned);
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static void Prepare(vout_display_t *, picture_t *, subpicture_t *);
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static void PictureDisplay(vout_display_t *, picture_t *, subpicture_t *);
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static int Control(vout_display_t *, int, va_list);
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/* */
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static void Manage(vout_display_t *);
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/* */
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struct vout_display_sys_t {
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struct aa_context* aa_context;
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aa_palette palette;
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vout_display_cfg_t state;
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picture_pool_t *pool;
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};
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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 Open(vlc_object_t *object)
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{
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vout_display_t *vd = (vout_display_t *)object;
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vout_display_sys_t *sys;
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#ifndef _WIN32
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if (!vlc_xlib_init (object))
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return VLC_EGENERIC;
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#endif
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/* Allocate structure */
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vd->sys = sys = calloc(1, sizeof(*sys));
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if (!sys)
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return VLC_ENOMEM;
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/* Don't parse any options, but take $AAOPTS into account */
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aa_parseoptions(NULL, NULL, NULL, NULL);
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/* */
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sys->aa_context = aa_autoinit(&aa_defparams);
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if (!sys->aa_context) {
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msg_Err(vd, "cannot initialize aalib");
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goto error;
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}
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vout_display_DeleteWindow(vd, NULL);
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aa_autoinitkbd(sys->aa_context, 0);
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aa_autoinitmouse(sys->aa_context, AA_MOUSEALLMASK);
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/* */
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video_format_t fmt = vd->fmt;
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fmt.i_chroma = VLC_CODEC_RGB8;
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fmt.i_width = aa_imgwidth(sys->aa_context);
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fmt.i_height = aa_imgheight(sys->aa_context);
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/* */
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vout_display_info_t info = vd->info;
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info.has_pictures_invalid = true;
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/* Setup vout_display now that everything is fine */
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vd->fmt = fmt;
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vd->info = info;
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vd->pool = Pool;
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vd->prepare = Prepare;
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vd->display = PictureDisplay;
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vd->control = Control;
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vd->manage = Manage;
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/* Inspect initial configuration and send correction events
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* FIXME how to handle aspect ratio with aa ? */
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sys->state = *vd->cfg;
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sys->state.is_fullscreen = false;
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vout_display_SendEventFullscreen(vd, false);
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vout_display_SendEventDisplaySize(vd, fmt.i_width, fmt.i_height);
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return VLC_SUCCESS;
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error:
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if (sys && sys->aa_context)
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aa_close(sys->aa_context);
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free(sys);
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return VLC_EGENERIC;
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}
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/**
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* Close a aa video output method
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*/
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static void Close(vlc_object_t *object)
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{
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vout_display_t *vd = (vout_display_t *)object;
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vout_display_sys_t *sys = vd->sys;
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if (sys->pool)
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picture_pool_Release(sys->pool);
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aa_close(sys->aa_context);
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free(sys);
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}
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/**
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* Return a pool of direct buffers
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*/
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static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
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{
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vout_display_sys_t *sys = vd->sys;
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VLC_UNUSED(count);
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if (!sys->pool) {
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picture_resource_t rsc;
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memset(&rsc, 0, sizeof(rsc));
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rsc.p[0].p_pixels = aa_image(sys->aa_context);
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rsc.p[0].i_pitch = aa_imgwidth(sys->aa_context);
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rsc.p[0].i_lines = aa_imgheight(sys->aa_context);
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picture_t *p_picture = picture_NewFromResource(&vd->fmt, &rsc);
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if (!p_picture)
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return NULL;
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sys->pool = picture_pool_New(1, &p_picture);
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}
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return sys->pool;
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}
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/**
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* Prepare a picture for display */
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static void Prepare(vout_display_t *vd, picture_t *picture, subpicture_t *subpicture)
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{
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vout_display_sys_t *sys = vd->sys;
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assert(vd->fmt.i_width == aa_imgwidth(sys->aa_context) &&
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vd->fmt.i_height == aa_imgheight(sys->aa_context));
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#if 0
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if (picture->format.p_palette) {
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for (int i = 0; i < 256; i++) {
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aa_setpalette(vd->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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#else
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VLC_UNUSED(picture);
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#endif
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VLC_UNUSED(subpicture);
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aa_fastrender(sys->aa_context, 0, 0,
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vd->fmt.i_width, vd->fmt.i_height);
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}
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/**
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* Display a picture
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*/
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static void PictureDisplay(vout_display_t *vd, picture_t *picture, subpicture_t *subpicture)
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{
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vout_display_sys_t *sys = vd->sys;
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aa_flush(sys->aa_context);
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picture_Release(picture);
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VLC_UNUSED(subpicture);
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}
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/**
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* Control for vout display
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*/
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static int Control(vout_display_t *vd, int query, va_list args)
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{
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VLC_UNUSED(args);
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vout_display_sys_t *sys = vd->sys;
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switch (query) {
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case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
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/* We have to ignore what is requested */
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vout_display_SendEventPicturesInvalid(vd);
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return VLC_SUCCESS;
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case VOUT_DISPLAY_RESET_PICTURES:
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if (sys->pool)
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picture_pool_Release(sys->pool);
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sys->pool = NULL;
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vd->fmt.i_width = aa_imgwidth(sys->aa_context);
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vd->fmt.i_height = aa_imgheight(sys->aa_context);
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return VLC_SUCCESS;
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case VOUT_DISPLAY_HIDE_MOUSE:
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aa_hidemouse(sys->aa_context);
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return VLC_SUCCESS;
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default:
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msg_Err(vd, "Unsupported query in vout display aalib");
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return VLC_EGENERIC;
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}
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}
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/**
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* Proccess pending event
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*/
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static void Manage(vout_display_t *vd)
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{
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vout_display_sys_t *sys = vd->sys;
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for (;;) {
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const int event = aa_getevent(sys->aa_context, 0);
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if (!event)
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return;
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switch (event) {
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case AA_MOUSE: {
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int x, y;
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int button;
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int vlc;
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aa_getmouse(sys->aa_context, &x, &y, &button);
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vlc = 0;
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if (button & AA_BUTTON1)
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vlc |= 1 << MOUSE_BUTTON_LEFT;
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if (button & AA_BUTTON2)
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vlc |= 1 << MOUSE_BUTTON_CENTER;
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if (button & AA_BUTTON3)
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vlc |= 1 << MOUSE_BUTTON_RIGHT;
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vout_display_SendEventMouseState(vd, x, y, vlc);
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aa_showcursor(sys->aa_context); /* Not perfect, we show it on click too */
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break;
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}
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case AA_RESIZE:
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aa_resize(sys->aa_context);
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vout_display_SendEventDisplaySize(vd,
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aa_imgwidth(sys->aa_context),
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aa_imgheight(sys->aa_context));
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break;
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/* TODO keys support to complete */
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case AA_UP:
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vout_display_SendEventKey(vd, KEY_UP);
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break;
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case AA_DOWN:
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vout_display_SendEventKey(vd, KEY_DOWN);
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break;
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case AA_RIGHT:
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vout_display_SendEventKey(vd, KEY_RIGHT);
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break;
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case AA_LEFT:
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vout_display_SendEventKey(vd, KEY_LEFT);
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break;
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case AA_BACKSPACE:
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vout_display_SendEventKey(vd, KEY_BACKSPACE);
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break;
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case AA_ESC:
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vout_display_SendEventKey(vd, KEY_ESC);
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break;
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default:
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if (event >= 0x20 && event <= 0x7f)
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vout_display_SendEventKey(vd, event);
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break;
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}
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}
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}
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