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 VideoLAN
   5  * $Id: hd1000v.cpp 6961 2004-03-05 17:34:23Z jpsaman $
   6  *
   7  * Authors: Jean-Paul Saman <jpsaman@wxs.nl>
   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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 extern "C" {
  28 #include <errno.h>                                                 /* ENOMEM */
  29 #include <stdlib.h>                                                /* free() */
  30 #include <string.h>                                            /* strerror() */
  31
  32 #include <vlc/vlc.h>
  33 #include <vlc/vout.h>
  34 #include <vlc/intf.h>
  35 }
  36
  37 #include <cascade/graphics/CascadeBitmap.h>
  38 #include <cascade/graphics/CascadeScreen.h>
  39
  40 /*****************************************************************************
  41  * Local prototypes
  42  *****************************************************************************/
  43 static int  Create    ( vlc_object_t * );
  44 static void Destroy   ( vlc_object_t * );
  45
  46 static int  Init      ( vout_thread_t * );
  47 static void End       ( vout_thread_t * );
  48 static void Display   ( vout_thread_t *, picture_t * );
  49
  50 static int NewPicture ( vout_thread_t *, picture_t * );
  51 static void FreePicture( vout_thread_t *, picture_t * );
  52
  53 /*****************************************************************************
  54  * Module descriptor
  55  *****************************************************************************/
  56 vlc_module_begin();
  57     set_description( _("HD1000 video output") );
  58     set_capability( "video output", 10 );
  59     add_shortcut( "hd1000v" );
  60     set_callbacks( Create, Destroy );
  61 vlc_module_end();
  62
  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  *****************************************************************************/
  69 struct vout_sys_t
  70 {
  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;
  75
  76     uint32_t            u_current; /* Current output resolution. */
  77     CascadeScreen      *p_screen;
  78 };
  79
  80 struct picture_sys_t
  81 {
  82     CascadeSharedMemZone *p_image;
  83 };
  84
  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 )
  91 {
  92     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  93     bool b_double_buffered = false;
  94
  95     p_vout->p_sys = (struct vout_sys_t*) malloc( sizeof(struct vout_sys_t) );
  96     if( p_vout->p_sys == NULL )
  97     {
  98         msg_Err( p_vout, "out of memory" );
  99         return VLC_EGENERIC;
 100     }
 101
 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 )
 105     {
 106         msg_Err( p_vout, "unable to allocate screen" );
 107         free( p_vout->p_sys );
 108         return VLC_EGENERIC;
 109     }
 110
 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;
 116
 117     /* Get current screen resolution */
 118     msg_Dbg( p_vout, "number of screen resolutions supported %u",
 119       p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported() );
 120
 121     p_vout->p_sys->p_screen->GetCurrentScreenResolution( (u32) p_vout->p_sys->u_current );
 122     p_vout->p_sys->p_screen->SetScreenResolution( (u32) p_vout->p_sys->u_current );
 123
 124 #if 1
 125     msg_Dbg( p_vout, "available screen resolutions:" );
 126     for (u32 i=0; i<p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported(); i++)
 127     {
 128         u32 i_width=0;
 129         u32 i_height=0;
 130         u8 i_screen_depth=0;
 131         bool b_buffered;
 132
 133         p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( i,
 134             i_width, i_height, i_screen_depth, b_buffered);
 135         msg_Dbg( p_vout, "  screen index = %u, width = %u, height = %u, depth = %u, double buffered = %s",
 136             i, i_width, i_height, i_screen_depth, (b_buffered ? "yes" : "no") );
 137     }
 138 #endif
 139
 140     p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( (u32) p_vout->p_sys->u_current,
 141             (u32) p_vout->p_sys->i_width,
 142             (u32) p_vout->p_sys->i_height,
 143             (u8) p_vout->p_sys->i_screen_depth,
 144             b_double_buffered);
 145     p_vout->p_sys->b_double_buffered = (vlc_bool_t) b_double_buffered;
 146     msg_Dbg( p_vout, "using screen index = %u, width = %u, height = %u, depth = %u, double buffered = %d",
 147             p_vout->p_sys->u_current, /* Current screen. */
 148             p_vout->p_sys->i_width,
 149             p_vout->p_sys->i_height,
 150             p_vout->p_sys->i_screen_depth,
 151             p_vout->p_sys->b_double_buffered );
 152
 153     return VLC_SUCCESS;
 154 }
 155
 156 static void Destroy( vlc_object_t *p_this )
 157 {
 158     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 159
 160     delete p_vout->p_sys->p_screen;
 161     free( p_vout->p_sys );
 162 }
 163
 164 /*****************************************************************************
 165  * Init: initialize video thread output method
 166  *****************************************************************************/
 167 static int Init( vout_thread_t *p_vout )
 168 {
 169     int i_index;
 170     picture_t *p_pic = NULL;
 171
 172     I_OUTPUTPICTURES = 0;
 173
 174     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 175     p_vout->output.i_width = p_vout->p_sys->i_width;
 176     p_vout->output.i_height = p_vout->p_sys->i_height;
 177     p_vout->output.i_aspect = p_vout->p_sys->i_width
 178                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 179
 180     /* Only RGBA 32bpp is supported by output device. */
 181     switch( p_vout->p_sys->i_screen_depth )
 182     {
 183         case 8: /* FIXME: set the palette */
 184             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 185         case 15:
 186             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 187         case 16:
 188             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 189         case 24:
 190             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 191         case 32:
 192             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 193         default:
 194             msg_Err( p_vout, "unknown screen depth %i",
 195                      p_vout->p_sys->i_screen_depth );
 196             return VLC_SUCCESS;
 197     }
 198
 199     /* Find an empty picture slot */
 200     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 201     {
 202         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 203         {
 204             p_pic = p_vout->p_picture + i_index;
 205             break;
 206         }
 207     }
 208
 209     if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 210     {
 211         return -1;
 212     }
 213
 214     /* Allocate the picture */
 215     p_pic->p->i_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->p_pixels = (uint8_t*) p_pic->p_sys->p_image->MapLock();
 281     p_pic->p->i_pitch = p_vout->p_sys->i_screen_depth;
 282     p_pic->p->i_visible_pitch = p_pic->p->i_pixel_pitch
 283                                  * p_vout->output.i_width;
 284
 285     return VLC_SUCCESS;
 286 }
 287
 288 /*****************************************************************************
 289  * FreePicture: destroy a picture allocated with NewPicture
 290  *****************************************************************************
 291  * Destroy SharedMemZoned AND associated data. The picture normally will be
 292  * unlocked in the Display() function except when the video output is closed
 293  * before the picture is displayed.
 294  *****************************************************************************/
 295 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 296 {
 297     if( p_pic->p_sys->p_image->Unlock() )
 298     { /* Just a test to see the effect described above. REMOVE THIS */
 299         msg_Err( p_vout, "unlocking shared memory failed, already unlocked" );
 300     }
 301
 302     if( p_pic->p_sys->p_image->Close() )
 303     {
 304         msg_Err( p_vout, "closing shared memory failed. Leaking memory of %ul",
 305                     p_pic->p_sys->p_image->GetSize() );
 306     }
 307
 308     delete p_pic->p_sys->p_image;
 309     free( p_pic->p_sys );
 310 }
 311
 312 /*****************************************************************************
 313  * Display: Map p_image onto the screen
 314  *****************************************************************************/
 315 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 316 {
 317     uint32_t i_width, i_height, i_x, i_y;
 318     uint32_t i_offset = 0;
 319
 320     vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 321                        p_vout->p_sys->i_height,
 322                        &i_x, &i_y, &i_width, &i_height );
 323     msg_Dbg( p_vout, "PlacePicture at x_left = %d, y_left = %d, x_bottom = %d, y_bottom = %d",
 324                 i_x, i_y, i_width, i_height );
 325
 326     /* Currently the only pixel format supported is 32bpp RGBA.*/
 327     p_vout->p_sys->p_screen->LockScreen();
 328
 329     /* Unlock the shared memory region first. */
 330     if( p_pic->p_sys->p_image->Unlock() )
 331     {
 332         msg_Err( p_vout, "unlocking shared memory failed. Expect threading problems." );
 333     }
 334
 335     p_vout->p_sys->p_screen->Blit( CascadePoint( (u32) i_x, (u32) i_y ), /* Place bitmap at */
 336             (*p_pic->p_sys->p_image)   ,                                      /* Image data */
 337             (u32) i_offset,                                   /* Offset in SharedMemoryZone */
 338             (u32) i_width,                                           /* Source bitmap width */
 339             (u32) i_height,                                         /* Source bitmap height */
 340             (u32) p_vout->p_sys->i_screen_depth,                      /* Source pixel depth */
 341             CascadeRect( (u32) i_x, (u32) i_y, (u32) i_width, (u32) i_height ) );
 342
 343     p_vout->p_sys->p_screen->UnlockScreen();
 344 }