1 /*****************************************************************************
2 * hd1000v.cpp: HD1000 video output display method
3 *****************************************************************************
4 * Copyright (C) 2004 VideoLAN
5 * $Id: hd1000v.cpp 6961 2004-03-05 17:34:23Z jpsaman $
7 * Authors: Jean-Paul Saman <jpsaman@wxs.nl>
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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
28 #include <errno.h> /* ENOMEM */
29 #include <stdlib.h> /* free() */
30 #include <string.h> /* strerror() */
37 #include <cascade/graphics/CascadeBitmap.h>
38 #include <cascade/graphics/CascadeScreen.h>
40 /*****************************************************************************
42 *****************************************************************************/
43 static int Create ( vlc_object_t * );
44 static void Destroy ( vlc_object_t * );
46 static int Init ( vout_thread_t * );
47 static void End ( vout_thread_t * );
48 static void Display ( vout_thread_t *, picture_t * );
50 static int NewPicture ( vout_thread_t *, picture_t * );
51 static void FreePicture( vout_thread_t *, picture_t * );
53 /*****************************************************************************
55 *****************************************************************************/
57 set_description( _("HD1000 video output") );
58 set_capability( "video output", 10 );
59 add_shortcut( "hd1000v" );
60 set_callbacks( Create, Destroy );
63 /*****************************************************************************
64 * vout_sys_t: video output method descriptor
65 *****************************************************************************
66 * This structure is part of the video output thread descriptor.
67 * It describes the aa specific properties of an output thread.
68 *****************************************************************************/
71 uint32_t i_width; /* width of main window */
72 uint32_t i_height; /* height of main window */
73 uint32_t i_screen_depth;
74 vlc_bool_t b_double_buffered;
76 uint32_t u_current; /* Current output resolution. */
77 CascadeScreen *p_screen;
82 CascadeSharedMemZone *p_image;
85 /*****************************************************************************
86 * Create: allocates video thread output method
87 *****************************************************************************
88 * This function allocates and initializes a aa vout method.
89 *****************************************************************************/
90 static int Create( vlc_object_t *p_this )
92 vout_thread_t *p_vout = (vout_thread_t *)p_this;
93 bool b_double_buffered = false;
95 p_vout->p_sys = (struct vout_sys_t*) malloc( sizeof(struct vout_sys_t) );
96 if( p_vout->p_sys == NULL )
98 msg_Err( p_vout, "out of memory" );
102 /* Allocate a screen for VLC vout. */
103 p_vout->p_sys->p_screen = new CascadeScreen();
104 if( p_vout->p_sys->p_screen == NULL )
106 msg_Err( p_vout, "unable to allocate screen" );
107 free( p_vout->p_sys );
111 p_vout->pf_init = Init;
112 p_vout->pf_end = End;
113 p_vout->pf_manage = NULL;
114 p_vout->pf_render = NULL;
115 p_vout->pf_display = Display;
117 /* Get current screen resolution */
118 msg_Dbg( p_vout, "Number of screen resolutions supported %u",
119 p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported() );
121 p_vout->p_sys->p_screen->GetCurrentOutputResolution( (u32) p_vout->p_sys->u_current );
122 p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( (u32) p_vout->p_sys->u_current,
123 (u32) p_vout->p_sys->i_width,
124 (u32) p_vout->p_sys->i_height,
125 (u8) p_vout->p_sys->i_screen_depth,
127 p_vout->p_sys->b_double_buffered = (vlc_bool_t) b_double_buffered;
128 msg_Dbg( p_vout, "index = %u, width = %u, height = %u, depth = %u, double buffered = %d",
129 p_vout->p_sys->u_current,
130 p_vout->p_sys->i_width,
131 p_vout->p_sys->i_height,
132 p_vout->p_sys->i_screen_depth,
133 p_vout->p_sys->b_double_buffered );
138 static void Destroy( vlc_object_t *p_this )
140 vout_thread_t *p_vout = (vout_thread_t *)p_this;
142 delete p_vout->p_sys->p_screen;
143 free( p_vout->p_sys );
146 /*****************************************************************************
147 * Init: initialize video thread output method
148 *****************************************************************************/
149 static int Init( vout_thread_t *p_vout )
152 picture_t *p_pic = NULL;
154 I_OUTPUTPICTURES = 0;
156 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
157 p_vout->output.i_width = p_vout->p_sys->i_width;
158 p_vout->output.i_height = p_vout->p_sys->i_height;
159 p_vout->output.i_aspect = p_vout->p_sys->i_width
160 * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
162 /* Only RGBA 32bpp is supported by output device. */
163 switch( p_vout->p_sys->i_screen_depth )
165 case 8: /* FIXME: set the palette */
166 p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
168 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
170 p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
172 p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
174 p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
176 msg_Err( p_vout, "unknown screen depth %i",
177 p_vout->p_sys->i_screen_depth );
181 /* Find an empty picture slot */
182 for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
184 if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
186 p_pic = p_vout->p_picture + i_index;
191 if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
196 /* Allocate the picture */
197 p_pic->p->i_lines = p_vout->p_sys->i_height;
198 p_pic->p->i_pitch = p_vout->p_sys->i_width;
199 p_pic->p->i_pixel_pitch = 1;
200 p_pic->p->i_visible_pitch = p_vout->p_sys->i_width;
203 p_pic->i_status = DESTROYED_PICTURE;
204 p_pic->i_type = DIRECT_PICTURE;
206 PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
212 /*****************************************************************************
213 * End: terminate video thread output method
214 *****************************************************************************/
215 static void End( vout_thread_t *p_vout )
219 /* Free the direct buffers we allocated */
220 for( i_index = I_OUTPUTPICTURES ; i_index ; )
223 FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
227 /*****************************************************************************
228 * NewPicture: Allocate shared memory zone for video output
229 *****************************************************************************/
230 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
232 CascadeDims p_dims = p_vout->p_sys->p_screen->GetDims();
234 p_pic->p_sys = (picture_sys_t *) malloc( sizeof( picture_sys_t ) );
235 if( p_pic->p_sys == NULL )
240 /* Fill in picture_t fields */
241 vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
242 p_vout->output.i_width, p_vout->output.i_height,
243 p_vout->output.i_aspect );
245 p_pic->p_sys->p_image = new CascadeSharedMemZone();
246 if( p_pic->p_sys->p_image == NULL )
248 free( p_pic->p_sys );
252 if( p_pic->p_sys->p_image->Open( "vlc_hd1000v", p_vout->output.i_width *
253 p_vout->output.i_height * p_vout->p_sys->i_screen_depth,
256 msg_Err( p_vout, "failed to allocate shared memory" );
257 free( p_pic->p_sys );
261 p_pic->p->i_lines = p_vout->output.i_height;
262 p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_image->MapLock();
263 p_pic->p->i_pitch = p_vout->p_sys->i_screen_depth;
264 p_pic->p->i_visible_pitch = p_pic->p->i_pixel_pitch
265 * p_vout->output.i_width;
270 /*****************************************************************************
271 * FreePicture: destroy a picture allocated with NewPicture
272 *****************************************************************************
273 * Destroy SharedMemZoned AND associated data. The picture normally will be
274 * unlocked in the Display() function except when the video output is closed
275 * before the picture is displayed.
276 *****************************************************************************/
277 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
279 if( p_pic->p_sys->p_image->Unlock() )
280 { /* Just a test to see the effect described above. REMOVE THIS */
281 msg_Err( p_vout, "unlocking shared memory failed, already unlocked" );
284 if( p_pic->p_sys->p_image->Close() )
286 msg_Err( p_vout, "closing shared memory failed. Leaking memory of %ul",
287 p_pic->p_sys->p_image->GetSize() );
290 delete p_pic->p_sys->p_image;
291 free( p_pic->p_sys );
294 /*****************************************************************************
295 * Display: Map p_image onto the screen
296 *****************************************************************************/
297 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
299 uint32_t i_width, i_height, i_x, i_y;
300 uint32_t i_offset = 0;
302 vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
303 p_vout->p_sys->i_height,
304 &i_x, &i_y, &i_width, &i_height );
305 msg_Dbg( p_vout, "PlacePicture at x_left = %d, y_left = %d, x_bottom = %d, y_bottom = %d",
306 i_x, i_y, i_width, i_height );
308 /* Currently the only pixel format supported is 32bpp RGBA.*/
309 p_vout->p_sys->p_screen->LockScreen();
311 /* Unlock the shared memory region first. */
312 if( p_pic->p_sys->p_image->Unlock() )
314 msg_Err( p_vout, "unlocking shared memory failed. Expect threading problems." );
317 p_vout->p_sys->p_screen->Blit( CascadePoint( (u32) i_x, (u32) i_y ), /* Place bitmap at */
318 (*p_pic->p_sys->p_image) , /* Image data */
319 (u32) i_offset, /* Offset in SharedMemoryZone */
320 (u32) i_width, /* Source bitmap width */
321 (u32) i_height, /* Source bitmap height */
322 (u32) p_vout->p_sys->i_screen_depth, /* Source pixel depth */
323 CascadeRect( (u32) i_x, (u32) i_y, (u32) i_width, (u32) i_height ) );
325 p_vout->p_sys->p_screen->UnlockScreen();