git.sesse.net Git - vlc/blob - modules/video_output/hd1000v.cpp

   1 /*****************************************************************************
   2  * hd1000v.cpp: HD1000 video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Jean-Paul Saman <jpsaman _at_ videolan _dot_ 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 extern "C" {
  28 #include <errno.h>                                                 /* ENOMEM */
  29 #include <string.h>                                            /* strerror() */
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc_vout.h>
  33 #include <vlc_playlist.h>
  34 }
  35
  36 #include <cascade/graphics/CascadeBitmap.h>
  37 #include <cascade/graphics/CascadeScreen.h>
  38
  39 /*****************************************************************************
  40  * Local prototypes
  41  *****************************************************************************/
  42 static int  Create    ( vlc_object_t * );
  43 static void Destroy   ( vlc_object_t * );
  44
  45 static int  Init      ( vout_thread_t * );
  46 static void End       ( vout_thread_t * );
  47 static void Display   ( vout_thread_t *, picture_t * );
  48
  49 static int NewPicture ( vout_thread_t *, picture_t * );
  50 static void FreePicture( vout_thread_t *, picture_t * );
  51
  52 /*****************************************************************************
  53  * Module descriptor
  54  *****************************************************************************/
  55 vlc_module_begin();
  56     set_description( _("HD1000 video output") );
  57     set_capability( "video output", 100 );
  58     add_shortcut( "hd1000v" );
  59     set_callbacks( Create, Destroy );
  60 vlc_module_end();
  61
  62 /*****************************************************************************
  63  * vout_sys_t: video output method descriptor
  64  *****************************************************************************
  65  * This structure is part of the video output thread descriptor.
  66  * It describes the aa specific properties of an output thread.
  67  *****************************************************************************/
  68 struct vout_sys_t
  69 {
  70     uint32_t            i_width;                     /* width of main window */
  71     uint32_t            i_height;                   /* height of main window */
  72     uint32_t            i_screen_depth;
  73     vlc_bool_t          b_double_buffered;
  74
  75     uint32_t            u_current; /* Current output resolution. */
  76     CascadeScreen      *p_screen;
  77 };
  78
  79 struct picture_sys_t
  80 {
  81     CascadeSharedMemZone *p_image;
  82 };
  83
  84 /*****************************************************************************
  85  * Create: allocates video thread output method
  86  *****************************************************************************
  87  * This function allocates and initializes a aa vout method.
  88  *****************************************************************************/
  89 static int Create( vlc_object_t *p_this )
  90 {
  91     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  92     bool b_double_buffered = false;
  93
  94     p_vout->p_sys = (struct vout_sys_t*) malloc( sizeof(struct vout_sys_t) );
  95     if( p_vout->p_sys == NULL )
  96     {
  97         msg_Err( p_vout, "out of memory" );
  98         return VLC_EGENERIC;
  99     }
 100
 101     /* Allocate a screen for VLC vout. */
 102     p_vout->p_sys->p_screen = new CascadeScreen();
 103     if( p_vout->p_sys->p_screen == NULL )
 104     {
 105         msg_Err( p_vout, "unable to allocate screen" );
 106         free( p_vout->p_sys );
 107         return VLC_EGENERIC;
 108     }
 109
 110     p_vout->pf_init = Init;
 111     p_vout->pf_end = End;
 112     p_vout->pf_manage = NULL;
 113     p_vout->pf_render = NULL;
 114     p_vout->pf_display = Display;
 115
 116     /* Get current screen resolution */
 117     msg_Dbg( p_vout, "number of screen resolutions supported %u",
 118       p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported() );
 119
 120     p_vout->p_sys->p_screen->GetCurrentScreenResolution( (u32) p_vout->p_sys->u_current );
 121     p_vout->p_sys->p_screen->SetScreenResolution( (u32) p_vout->p_sys->u_current );
 122
 123 #if 1
 124     msg_Dbg( p_vout, "available screen resolutions:" );
 125     for (u32 i=0; i<p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported(); i++)
 126     {
 127         u32 i_width=0;
 128         u32 i_height=0;
 129         u8 i_screen_depth=0;
 130         bool b_buffered;
 131
 132         p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( i,
 133             i_width, i_height, i_screen_depth, b_buffered);
 134         msg_Dbg( p_vout, "  screen index = %u, width = %u, height = %u, depth = %u, double buffered = %s",
 135             i, i_width, i_height, i_screen_depth, (b_buffered ? "yes" : "no") );
 136     }
 137 #endif
 138
 139     p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( (u32) p_vout->p_sys->u_current,
 140             (u32) p_vout->p_sys->i_width,
 141             (u32) p_vout->p_sys->i_height,
 142             (u8) p_vout->p_sys->i_screen_depth,
 143             b_double_buffered );
 144     p_vout->p_sys->b_double_buffered = (vlc_bool_t) b_double_buffered;
 145     msg_Dbg( p_vout, "using screen index = %u, width = %u, height = %u, depth = %u, double buffered = %d",
 146             p_vout->p_sys->u_current, /* Current screen. */
 147             p_vout->p_sys->i_width,
 148             p_vout->p_sys->i_height,
 149             p_vout->p_sys->i_screen_depth,
 150             p_vout->p_sys->b_double_buffered );
 151
 152     return VLC_SUCCESS;
 153 }
 154
 155 static void Destroy( vlc_object_t *p_this )
 156 {
 157     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 158
 159     delete p_vout->p_sys->p_screen;
 160     free( p_vout->p_sys );
 161 }
 162
 163 /*****************************************************************************
 164  * Init: initialize video thread output method
 165  *****************************************************************************/
 166 static int Init( vout_thread_t *p_vout )
 167 {
 168     int i_index;
 169     picture_t *p_pic = NULL;
 170
 171     I_OUTPUTPICTURES = 0;
 172
 173     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 174     p_vout->output.i_width = p_vout->p_sys->i_width;
 175     p_vout->output.i_height = p_vout->p_sys->i_height;
 176     p_vout->output.i_aspect = p_vout->p_sys->i_width
 177                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 178
 179     /* Only RGBA 32bpp is supported by output device. */
 180     switch( p_vout->p_sys->i_screen_depth )
 181     {
 182         case 8: /* FIXME: set the palette */
 183             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 184         case 15:
 185             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 186         case 16:
 187             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 188         case 24:
 189             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 190         case 32:
 191             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 192         default:
 193             msg_Err( p_vout, "unknown screen depth %i",
 194                      p_vout->p_sys->i_screen_depth );
 195             return VLC_SUCCESS;
 196     }
 197
 198     /* Find an empty picture slot */
 199     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 200     {
 201         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 202         {
 203             p_pic = p_vout->p_picture + i_index;
 204             break;
 205         }
 206     }
 207
 208     if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 209     {
 210         return -1;
 211     }
 212
 213     /* Allocate the picture */
 214     p_pic->p->i_lines = p_vout->p_sys->i_height;
 215     p_pic->p->i_visible_lines = p_vout->p_sys->i_height;
 216     p_pic->p->i_pitch = p_vout->p_sys->i_width;
 217     p_pic->p->i_pixel_pitch = 1;
 218     p_pic->p->i_visible_pitch = p_vout->p_sys->i_width;
 219     p_pic->i_planes = 1;
 220
 221     p_pic->i_status = DESTROYED_PICTURE;
 222     p_pic->i_type   = DIRECT_PICTURE;
 223
 224     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 225     I_OUTPUTPICTURES++;
 226
 227     return VLC_SUCCESS;
 228 }
 229
 230 /*****************************************************************************
 231  * End: terminate video thread output method
 232  *****************************************************************************/
 233 static void End( vout_thread_t *p_vout )
 234 {
 235     int i_index;
 236
 237     /* Free the direct buffers we allocated */
 238     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 239     {
 240         i_index--;
 241         FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
 242     }
 243 }
 244
 245 /*****************************************************************************
 246  * NewPicture: Allocate shared memory zone for video output
 247  *****************************************************************************/
 248 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 249 {
 250     CascadeDims p_dims = p_vout->p_sys->p_screen->GetDims();
 251
 252     p_pic->p_sys = (picture_sys_t *) malloc( sizeof( picture_sys_t ) );
 253     if( p_pic->p_sys == NULL )
 254     {
 255         return -1;
 256     }
 257
 258     /* Fill in picture_t fields */
 259     vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
 260                       p_vout->output.i_width, p_vout->output.i_height,
 261                       p_vout->output.i_aspect );
 262
 263     p_pic->p_sys->p_image = new CascadeSharedMemZone();
 264     if( p_pic->p_sys->p_image == NULL )
 265     {
 266         free( p_pic->p_sys );
 267         return -1;
 268     }
 269
 270     if( p_pic->p_sys->p_image->Open( "vlc_hd1000v", p_vout->output.i_width *
 271             p_vout->output.i_height * p_vout->p_sys->i_screen_depth,
 272             true ) )
 273     {
 274         msg_Err( p_vout, "failed to allocate shared memory" );
 275         free( p_pic->p_sys );
 276         return -1;
 277     }
 278
 279     p_pic->p->i_lines = p_vout->output.i_height;
 280     p_pic->p->i_visible_lines = p_vout->output.i_height;
 281     p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_image->MapLock();
 282     p_pic->p->i_pitch = p_vout->p_sys->i_screen_depth;
 283     p_pic->p->i_visible_pitch = p_pic->p->i_pixel_pitch
 284                                  * p_vout->output.i_width;
 285
 286     return VLC_SUCCESS;
 287 }
 288
 289 /*****************************************************************************
 290  * FreePicture: destroy a picture allocated with NewPicture
 291  *****************************************************************************
 292  * Destroy SharedMemZoned AND associated data. The picture normally will be
 293  * unlocked in the Display() function except when the video output is closed
 294  * before the picture is displayed.
 295  *****************************************************************************/
 296 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 297 {
 298     if( p_pic->p_sys->p_image->Unlock() )
 299     { /* Just a test to see the effect described above. REMOVE THIS */
 300         msg_Err( p_vout, "unlocking shared memory failed, already unlocked" );
 301     }
 302
 303     if( p_pic->p_sys->p_image->Close() )
 304     {
 305         msg_Err( p_vout, "closing shared memory failed. Leaking memory of %ul",
 306                     p_pic->p_sys->p_image->GetSize() );
 307     }
 308
 309     delete p_pic->p_sys->p_image;
 310     free( p_pic->p_sys );
 311 }
 312
 313 /*****************************************************************************
 314  * Display: Map p_image onto the screen
 315  *****************************************************************************/
 316 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 317 {
 318     uint32_t i_width, i_height, i_x, i_y;
 319     uint32_t i_offset = 0;
 320
 321     vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 322                        p_vout->p_sys->i_height,
 323                        &i_x, &i_y, &i_width, &i_height );
 324     msg_Dbg( p_vout, "PlacePicture at x_left = %d, y_left = %d, x_bottom = %d, y_bottom = %d",
 325                 i_x, i_y, i_width, i_height );
 326
 327     /* Currently the only pixel format supported is 32bpp RGBA.*/
 328     p_vout->p_sys->p_screen->LockScreen();
 329
 330     /* Unlock the shared memory region first. */
 331     if( p_pic->p_sys->p_image->Unlock() )
 332     {
 333         msg_Err( p_vout, "unlocking shared memory failed. Expect threading problems." );
 334     }
 335
 336     p_vout->p_sys->p_screen->Blit( CascadePoint( (u32) i_x, (u32) i_y ), /* Place bitmap at */
 337             (*p_pic->p_sys->p_image)   ,                                      /* Image data */
 338             (u32) i_offset,                                   /* Offset in SharedMemoryZone */
 339             (u32) i_width,                                           /* Source bitmap width */
 340             (u32) i_height,                                         /* Source bitmap height */
 341             (u32) p_vout->p_sys->i_screen_depth,                      /* Source pixel depth */
 342             CascadeRect( (u32) i_x, (u32) i_y, (u32) i_width, (u32) i_height ) );
 343
 344     p_vout->p_sys->p_screen->UnlockScreen();
 345 }