1 /*****************************************************************************
2 * aa.c: "vout display" module using aalib
3 *****************************************************************************
4 * Copyright (C) 2002-2009 the VideoLAN team
7 * Authors: Sigmund Augdal Helberg <dnumgis@videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
31 #include <vlc_common.h>
32 #include <vlc_plugin.h>
33 #include <vlc_vout_display.h>
34 #include <vlc_picture_pool.h>
40 * - what about RGB palette ?
42 /*****************************************************************************
44 *****************************************************************************/
45 static int Open (vlc_object_t *);
46 static void Close(vlc_object_t *);
49 set_shortname(N_("ASCII Art"))
50 set_category(CAT_VIDEO)
51 set_subcategory(SUBCAT_VIDEO_VOUT)
52 set_description(N_("ASCII-art video output"))
53 set_capability("vout display", 10)
55 set_callbacks(Open, Close)
58 /*****************************************************************************
60 *****************************************************************************/
61 static picture_pool_t *Pool (vout_display_t *, unsigned);
62 static void Prepare(vout_display_t *, picture_t *);
63 static void Display(vout_display_t *, picture_t *);
64 static int Control(vout_display_t *, int, va_list);
67 static void Manage(vout_display_t *);
70 struct vout_display_sys_t {
71 struct aa_context* aa_context;
74 vout_display_cfg_t state;
79 * This function allocates and initializes a aa vout method.
81 static int Open(vlc_object_t *object)
83 vout_display_t *vd = (vout_display_t *)object;
84 vout_display_sys_t *sys;
86 /* Allocate structure */
87 vd->sys = sys = calloc(1, sizeof(*sys));
91 /* Don't parse any options, but take $AAOPTS into account */
92 aa_parseoptions(NULL, NULL, NULL, NULL);
95 sys->aa_context = aa_autoinit(&aa_defparams);
96 if (!sys->aa_context) {
97 msg_Err(vd, "cannot initialize aalib");
100 vout_display_DeleteWindow(vd, NULL);
102 aa_autoinitkbd(sys->aa_context, 0);
103 aa_autoinitmouse(sys->aa_context, AA_MOUSEALLMASK);
106 video_format_t fmt = vd->fmt;
107 fmt.i_chroma = VLC_CODEC_RGB8;
108 fmt.i_width = aa_imgwidth(sys->aa_context);
109 fmt.i_height = aa_imgheight(sys->aa_context);
112 vout_display_info_t info = vd->info;
113 info.has_pictures_invalid = true;
115 /* Setup vout_display now that everything is fine */
120 vd->prepare = Prepare;
121 vd->display = Display;
122 vd->control = Control;
125 /* Inspect initial configuration and send correction events
126 * FIXME how to handle aspect ratio with aa ? */
127 sys->state = *vd->cfg;
128 sys->state.is_fullscreen = false;
129 vout_display_SendEventFullscreen(vd, false);
130 vout_display_SendEventDisplaySize(vd, fmt.i_width, fmt.i_height, false);
135 if (sys && sys->aa_context)
136 aa_close(sys->aa_context);
142 * Close a aa video output method
144 static void Close(vlc_object_t *object)
146 vout_display_t *vd = (vout_display_t *)object;
147 vout_display_sys_t *sys = vd->sys;
150 picture_pool_Delete(sys->pool);
151 aa_close(sys->aa_context);
156 * Return a pool of direct buffers
158 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
160 vout_display_sys_t *sys = vd->sys;
164 picture_resource_t rsc;
166 memset(&rsc, 0, sizeof(rsc));
167 rsc.p[0].p_pixels = aa_image(sys->aa_context);
168 rsc.p[0].i_pitch = aa_imgwidth(sys->aa_context);
169 rsc.p[0].i_lines = aa_imgheight(sys->aa_context);
171 picture_t *p_picture = picture_NewFromResource(&vd->fmt, &rsc);
175 sys->pool = picture_pool_New(1, &p_picture);
181 * Prepare a picture for display */
182 static void Prepare(vout_display_t *vd, picture_t *picture)
184 vout_display_sys_t *sys = vd->sys;
186 assert(vd->fmt.i_width == aa_imgwidth(sys->aa_context) &&
187 vd->fmt.i_height == aa_imgheight(sys->aa_context));
190 if (picture->format.p_palette) {
191 for (int i = 0; i < 256; i++) {
192 aa_setpalette(vd->sys->palette, 256 - i,
193 red[ i ], green[ i ], blue[ i ]);
200 aa_fastrender(sys->aa_context, 0, 0,
201 vd->fmt.i_width, vd->fmt.i_height);
207 static void Display(vout_display_t *vd, picture_t *picture)
209 vout_display_sys_t *sys = vd->sys;
211 aa_flush(sys->aa_context);
212 picture_Release(picture);
216 * Control for vout display
218 static int Control(vout_display_t *vd, int query, va_list args)
221 vout_display_sys_t *sys = vd->sys;
224 case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
225 /* We have to ignore what is requested */
226 vout_display_SendEventPicturesInvalid(vd);
229 case VOUT_DISPLAY_RESET_PICTURES:
231 picture_pool_Delete(sys->pool);
234 vd->fmt.i_width = aa_imgwidth(sys->aa_context);
235 vd->fmt.i_height = aa_imgheight(sys->aa_context);
238 case VOUT_DISPLAY_HIDE_MOUSE:
239 aa_hidemouse(sys->aa_context);
243 msg_Err(vd, "Unsupported query in vout display aalib");
250 * Proccess pending event
252 static void Manage(vout_display_t *vd)
254 vout_display_sys_t *sys = vd->sys;
257 const int event = aa_getevent(sys->aa_context, 0);
266 aa_getmouse(sys->aa_context, &x, &y, &button);
269 if (button & AA_BUTTON1)
270 vlc |= 1 << MOUSE_BUTTON_LEFT;
271 if (button & AA_BUTTON2)
272 vlc |= 1 << MOUSE_BUTTON_CENTER;
273 if (button & AA_BUTTON3)
274 vlc |= 1 << MOUSE_BUTTON_RIGHT;
276 vout_display_SendEventMouseState(vd, x, y, vlc);
278 aa_showcursor(sys->aa_context); /* Not perfect, we show it on click too */
283 aa_resize(sys->aa_context);
284 vout_display_SendEventDisplaySize(vd,
285 aa_imgwidth(sys->aa_context),
286 aa_imgheight(sys->aa_context), false);
289 /* TODO keys support to complete */
291 vout_display_SendEventKey(vd, KEY_UP);
294 vout_display_SendEventKey(vd, KEY_DOWN);
297 vout_display_SendEventKey(vd, KEY_RIGHT);
300 vout_display_SendEventKey(vd, KEY_LEFT);
303 vout_display_SendEventKey(vd, KEY_BACKSPACE);
306 vout_display_SendEventKey(vd, KEY_ESC);
309 if (event >= 0x20 && event <= 0x7f)
310 vout_display_SendEventKey(vd, event);