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->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,
 126             b_double_buffered);
 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 );
 134
 135     return VLC_SUCCESS;
 136 }
 137
 138 static void Destroy( vlc_object_t *p_this )
 139 {
 140     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 141
 142     delete p_vout->p_sys->p_screen;
 143     free( p_vout->p_sys );
 144 }
 145
 146 /*****************************************************************************
 147  * Init: initialize video thread output method
 148  *****************************************************************************/
 149 static int Init( vout_thread_t *p_vout )
 150 {
 151     int i_index;
 152     picture_t *p_pic = NULL;
 153
 154     I_OUTPUTPICTURES = 0;
 155
 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;
 161
 162     /* Only RGBA 32bpp is supported by output device. */
 163     switch( p_vout->p_sys->i_screen_depth )
 164     {
 165         case 8: /* FIXME: set the palette */
 166             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 167         case 15:
 168             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 169         case 16:
 170             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 171         case 24:
 172             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 173         case 32:
 174             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 175         default:
 176             msg_Err( p_vout, "unknown screen depth %i",
 177                      p_vout->p_sys->i_screen_depth );
 178             return VLC_SUCCESS;
 179     }
 180
 181     /* Find an empty picture slot */
 182     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 183     {
 184         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 185         {
 186             p_pic = p_vout->p_picture + i_index;
 187             break;
 188         }
 189     }
 190
 191     if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 192     {
 193         return -1;
 194     }
 195
 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;
 201     p_pic->i_planes = 1;
 202
 203     p_pic->i_status = DESTROYED_PICTURE;
 204     p_pic->i_type   = DIRECT_PICTURE;
 205
 206     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 207     I_OUTPUTPICTURES++;
 208
 209     return VLC_SUCCESS;
 210 }
 211
 212 /*****************************************************************************
 213  * End: terminate video thread output method
 214  *****************************************************************************/
 215 static void End( vout_thread_t *p_vout )
 216 {
 217     int i_index;
 218
 219     /* Free the direct buffers we allocated */
 220     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 221     {
 222         i_index--;
 223         FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
 224     }
 225 }
 226
 227 /*****************************************************************************
 228  * NewPicture: Allocate shared memory zone for video output
 229  *****************************************************************************/
 230 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 231 {
 232     CascadeDims p_dims = p_vout->p_sys->p_screen->GetDims();
 233
 234     p_pic->p_sys = (picture_sys_t *) malloc( sizeof( picture_sys_t ) );
 235     if( p_pic->p_sys == NULL )
 236     {
 237         return -1;
 238     }
 239
 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 );
 244
 245     p_pic->p_sys->p_image = new CascadeSharedMemZone();
 246     if( p_pic->p_sys->p_image == NULL )
 247     {
 248         free( p_pic->p_sys );
 249         return -1;
 250     }
 251
 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,
 254             true ) )
 255     {
 256         msg_Err( p_vout, "failed to allocate shared memory" );
 257         free( p_pic->p_sys );
 258         return -1;
 259     }
 260
 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;
 266
 267     return VLC_SUCCESS;
 268 }
 269
 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 )
 278 {
 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" );
 282     }
 283
 284     if( p_pic->p_sys->p_image->Close() )
 285     {
 286         msg_Err( p_vout, "closing shared memory failed. Leaking memory of %ul",
 287                     p_pic->p_sys->p_image->GetSize() );
 288     }
 289
 290     delete p_pic->p_sys->p_image;
 291     free( p_pic->p_sys );
 292 }
 293
 294 /*****************************************************************************
 295  * Display: Map p_image onto the screen
 296  *****************************************************************************/
 297 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 298 {
 299     uint32_t i_width, i_height, i_x, i_y;
 300     uint32_t i_offset = 0;
 301
 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 );
 307
 308     /* Currently the only pixel format supported is 32bpp RGBA.*/
 309     p_vout->p_sys->p_screen->LockScreen();
 310
 311     /* Unlock the shared memory region first. */
 312     if( p_pic->p_sys->p_image->Unlock() )
 313     {
 314         msg_Err( p_vout, "unlocking shared memory failed. Expect threading problems." );
 315     }
 316
 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 ) );
 324
 325     p_vout->p_sys->p_screen->UnlockScreen();
 326 }