]> git.sesse.net Git - vlc/blob - modules/video_output/caca.c
* modules/video_output/caca.c: Compilation fixes.
[vlc] / modules / video_output / caca.c
1 /*****************************************************************************
2  * caca.c: Color ASCII Art video output plugin using libcaca
3  *****************************************************************************
4  * Copyright (C) 2003, 2004 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Sam Hocevar <sam@zoy.org>
8  *
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.
13  *
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.
18  *
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  *****************************************************************************/
23
24 /*****************************************************************************
25  * Preamble
26  *****************************************************************************/
27 #include <errno.h>                                                 /* ENOMEM */
28 #include <stdlib.h>                                                /* free() */
29 #include <string.h>                                            /* strerror() */
30
31 #include <caca.h>
32
33 #include <vlc/vlc.h>
34 #include <vlc/vout.h>
35 #include <vlc/intf.h>
36 #include <vlc_keys.h>
37
38 /*****************************************************************************
39  * Local prototypes
40  *****************************************************************************/
41 static int  Create    ( vlc_object_t * );
42 static void Destroy   ( vlc_object_t * );
43
44 static int  Init      ( vout_thread_t * );
45 static void End       ( vout_thread_t * );
46 static int  Manage    ( vout_thread_t * );
47 static void Render    ( vout_thread_t *, picture_t * );
48 static void Display   ( vout_thread_t *, picture_t * );
49
50 /*****************************************************************************
51  * Module descriptor
52  *****************************************************************************/
53 vlc_module_begin();
54     set_shortname( "Caca" );
55     set_category( CAT_VIDEO );
56     set_subcategory( SUBCAT_VIDEO_VOUT );
57     set_description( _("Color ASCII art video output") );
58     set_capability( "video output", 12 );
59     set_callbacks( Create, Destroy );
60 vlc_module_end();
61
62 /*****************************************************************************
63  * vout_sys_t: libcaca video output method descriptor
64  *****************************************************************************
65  * This structure is part of the video output thread descriptor.
66  * It describes the libcaca specific properties of an output thread.
67  *****************************************************************************/
68 struct vout_sys_t
69 {
70 #ifdef CACA_API_VERSION_1
71     struct cucul_context *p_qq;
72     struct caca_context *p_kk;
73     struct cucul_bitmap *p_bitmap;
74 #else
75     struct caca_bitmap *p_bitmap;
76 #endif
77 };
78
79 /*****************************************************************************
80  * Create: allocates libcaca video output thread
81  *****************************************************************************
82  * This function initializes libcaca vout method.
83  *****************************************************************************/
84 static int Create( vlc_object_t *p_this )
85 {
86     vout_thread_t *p_vout = (vout_thread_t *)p_this;
87
88 #if defined( WIN32 ) && !defined( UNDER_CE )
89     if( AllocConsole() )
90     {
91         CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
92         SMALL_RECT rect;
93         COORD coord;
94
95         HANDLE hstdout =
96             CreateConsoleScreenBuffer( GENERIC_READ | GENERIC_WRITE,
97                                        FILE_SHARE_READ | FILE_SHARE_WRITE,
98                                        NULL, CONSOLE_TEXTMODE_BUFFER, NULL );
99         if( !hstdout || hstdout == INVALID_HANDLE_VALUE )
100         {
101             msg_Err( p_vout, "cannot create screen buffer" );
102             FreeConsole();
103             return VLC_EGENERIC;
104         }
105
106         if( !SetConsoleActiveScreenBuffer( hstdout) )
107         {
108             msg_Err( p_vout, "cannot set active screen buffer" );
109             FreeConsole();
110             return VLC_EGENERIC;
111         }
112
113         coord = GetLargestConsoleWindowSize( hstdout );
114         msg_Dbg( p_vout, "SetConsoleWindowInfo: %ix%i", coord.X, coord.Y );
115
116         /* Force size for now */
117         coord.X = 100;
118         coord.Y = 40;
119
120         if( !SetConsoleScreenBufferSize( hstdout, coord ) )
121             msg_Warn( p_vout, "SetConsoleScreenBufferSize %i %i",
122                       coord.X, coord.Y );
123
124         /* Get the current screen buffer size and window position. */
125         if( GetConsoleScreenBufferInfo( hstdout, &csbiInfo ) )
126         {
127             rect.Top = 0; rect.Left = 0;
128             rect.Right = csbiInfo.dwMaximumWindowSize.X - 1;
129             rect.Bottom = csbiInfo.dwMaximumWindowSize.Y - 1;
130             if( !SetConsoleWindowInfo( hstdout, TRUE, &rect ) )
131                 msg_Dbg( p_vout, "SetConsoleWindowInfo failed: %ix%i",
132                          rect.Right, rect.Bottom );
133         }
134     }
135     else
136     {
137         msg_Err( p_vout, "cannot create console" );
138         return VLC_EGENERIC;
139     }
140
141 #endif
142
143     /* Allocate structure */
144     p_vout->p_sys = malloc( sizeof( vout_sys_t ) );
145     if( p_vout->p_sys == NULL )
146     {
147         msg_Err( p_vout, "out of memory" );
148         return VLC_ENOMEM;
149     }
150
151 #ifdef CACA_API_VERSION_1
152     p_vout->p_sys->p_qq = cucul_init(0, 0);
153     if( !p_vout->p_sys->p_qq )
154     {
155         msg_Err( p_vout, "cannot initialize libcucul" );
156         free( p_vout->p_sys );
157         return VLC_EGENERIC;
158     }
159
160     p_vout->p_sys->p_kk = caca_attach( p_vout->p_sys->p_qq );
161     if( !p_vout->p_sys->p_kk )
162     {
163         msg_Err( p_vout, "cannot initialize libcaca" );
164         cucul_end( p_vout->p_sys->p_qq );
165         free( p_vout->p_sys );
166         return VLC_EGENERIC;
167     }
168
169     caca_set_window_title( p_vout->p_sys->p_kk,
170                            VOUT_TITLE " - Colour AsCii Art (caca)" );
171 #else
172     if( caca_init() )
173     {
174         msg_Err( p_vout, "cannot initialize libcaca" );
175         free( p_vout->p_sys );
176         return VLC_EGENERIC;
177     }
178
179     caca_set_window_title( VOUT_TITLE " - Colour AsCii Art (caca)" );
180 #endif
181
182     p_vout->pf_init = Init;
183     p_vout->pf_end = End;
184     p_vout->pf_manage = Manage;
185     p_vout->pf_render = Render;
186     p_vout->pf_display = Display;
187
188     return VLC_SUCCESS;
189 }
190
191 /*****************************************************************************
192  * Init: initialize libcaca video output thread
193  *****************************************************************************/
194 static int Init( vout_thread_t *p_vout )
195 {
196     int i_index;
197     picture_t *p_pic = NULL;
198
199     I_OUTPUTPICTURES = 0;
200
201     p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
202     p_vout->output.i_width = p_vout->render.i_width;
203     p_vout->output.i_height = p_vout->render.i_height;
204     p_vout->output.i_aspect = p_vout->render.i_aspect;
205
206     p_vout->output.i_rmask = 0x00ff0000;
207     p_vout->output.i_gmask = 0x0000ff00;
208     p_vout->output.i_bmask = 0x000000ff;
209
210     /* Create the libcaca bitmap */
211     p_vout->p_sys->p_bitmap =
212 #ifdef CACA_API_VERSION_1
213         cucul_create_bitmap
214 #else
215         caca_create_bitmap
216 #endif
217                        ( 32, p_vout->output.i_width, p_vout->output.i_height,
218                          4 * ((p_vout->output.i_width + 15) & ~15),
219                          p_vout->output.i_rmask, p_vout->output.i_gmask,
220                          p_vout->output.i_bmask, 0x00000000 );
221
222     if( !p_vout->p_sys->p_bitmap )
223     {
224         msg_Err( p_vout, "could not create libcaca bitmap" );
225         return VLC_EGENERIC;
226     }
227
228     /* Find an empty picture slot */
229     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
230     {
231         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
232         {
233             p_pic = p_vout->p_picture + i_index;
234             break;
235         }
236     }
237
238     if( p_pic == NULL )
239     {
240         return VLC_EGENERIC;
241     }
242
243     /* Allocate the picture */
244     p_pic->p->i_lines = p_vout->output.i_height;
245     p_pic->p->i_visible_lines = p_vout->output.i_height;
246     p_pic->p->i_pitch = 4 * ((p_vout->output.i_width + 15) & ~15);
247     p_pic->p->i_pixel_pitch = 4;
248     p_pic->p->i_visible_pitch = 4 * p_vout->output.i_width;
249     p_pic->i_planes = 1;
250     p_pic->p->p_pixels = malloc( p_pic->p->i_pitch * p_pic->p->i_lines );
251
252     p_pic->i_status = DESTROYED_PICTURE;
253     p_pic->i_type   = DIRECT_PICTURE;
254
255     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
256     I_OUTPUTPICTURES++;
257
258     return VLC_SUCCESS;
259 }
260
261 /*****************************************************************************
262  * End: terminate libcaca video output thread
263  *****************************************************************************/
264 static void End( vout_thread_t *p_vout )
265 {
266 #ifdef CACA_API_VERSION_1
267     cucul_free_bitmap( p_vout->p_sys->p_bitmap );
268 #else
269     caca_free_bitmap( p_vout->p_sys->p_bitmap );
270 #endif
271 }
272
273 /*****************************************************************************
274  * Destroy: destroy libcaca video output thread
275  *****************************************************************************
276  * Terminate an output method created by AaCreateOutputMethod
277  *****************************************************************************/
278 static void Destroy( vlc_object_t *p_this )
279 {
280     vout_thread_t *p_vout = (vout_thread_t *)p_this;
281
282 #ifdef CACA_API_VERSION_1
283     caca_detach( p_vout->p_sys->p_kk );
284     cucul_end( p_vout->p_sys->p_qq );
285 #else
286     caca_end();
287 #endif
288
289 #if defined( WIN32 ) && !defined( UNDER_CE )
290     FreeConsole();
291 #endif
292
293     free( p_vout->p_sys );
294 }
295
296 /*****************************************************************************
297  * Manage: handle libcaca events
298  *****************************************************************************
299  * This function should be called regularly by video output thread. It manages
300  * console events. It returns a non null value on error.
301  *****************************************************************************/
302 static int Manage( vout_thread_t *p_vout )
303 {
304     int event;
305     vlc_value_t val;
306
307 #ifdef CACA_API_VERSION_1
308     while(( event = caca_get_event(p_vout->p_sys->p_kk,
309                                    CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE) ))
310 #else
311     while(( event = caca_get_event(CACA_EVENT_KEY_PRESS | CACA_EVENT_RESIZE) ))
312 #endif
313     {
314         if( event == CACA_EVENT_RESIZE )
315         {
316             /* Acknowledge the resize */
317 #ifdef CACA_API_VERSION_1
318             caca_display( p_vout->p_sys->p_kk );
319 #else
320             caca_refresh();
321 #endif
322             continue;
323         }
324
325         switch( event & 0x00ffffff )
326         {
327         case 'q':
328             val.i_int = KEY_MODIFIER_CTRL | 'q';
329             break;
330         case ' ':
331             val.i_int = KEY_SPACE;
332             break;
333         default:
334             continue;
335         }
336
337         var_Set( p_vout->p_vlc, "key-pressed", val );
338     }
339
340     return VLC_SUCCESS;
341 }
342
343 /*****************************************************************************
344  * Render: render previously calculated output
345  *****************************************************************************/
346 static void Render( vout_thread_t *p_vout, picture_t *p_pic )
347 {
348 #ifdef CACA_API_VERSION_1
349     cucul_clear( p_vout->p_sys->p_qq );
350     cucul_draw_bitmap( p_vout->p_sys->p_qq,
351                        0, 0,
352                        cucul_get_width( p_vout->p_sys->p_qq ) - 1,
353                        cucul_get_height( p_vout->p_sys->p_qq ) - 1,
354                        p_vout->p_sys->p_bitmap, p_pic->p->p_pixels );
355 #else
356     caca_clear();
357     caca_draw_bitmap( 0, 0, caca_get_width() - 1, caca_get_height() - 1,
358                       p_vout->p_sys->p_bitmap, p_pic->p->p_pixels );
359 #endif
360 }
361
362 /*****************************************************************************
363  * Display: displays previously rendered output
364  *****************************************************************************/
365 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
366 {
367 #ifdef CACA_API_VERSION_1
368     caca_display( p_vout->p_sys->p_kk );
369 #else
370     caca_refresh();
371 #endif
372 }
373