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