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
  30 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc/vlc.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_vout.h>
  37 #include <vlc_playlist.h>
  38 }
  39
  40 #include <cascade/graphics/CascadeBitmap.h>
  41 #include <cascade/graphics/CascadeScreen.h>
  42
  43 /*****************************************************************************
  44  * Local prototypes
  45  *****************************************************************************/
  46 static int  Create    ( vlc_object_t * );
  47 static void Destroy   ( vlc_object_t * );
  48
  49 static int  Init      ( vout_thread_t * );
  50 static void End       ( vout_thread_t * );
  51 static void Display   ( vout_thread_t *, picture_t * );
  52
  53 static int NewPicture ( vout_thread_t *, picture_t * );
  54 static void FreePicture( vout_thread_t *, picture_t * );
  55
  56 /*****************************************************************************
  57  * Module descriptor
  58  *****************************************************************************/
  59 vlc_module_begin();
  60     set_description( _("HD1000 video output") );
  61     set_capability( "video output", 100 );
  62     add_shortcut( "hd1000v" );
  63     set_callbacks( Create, Destroy );
  64 vlc_module_end();
  65
  66 /*****************************************************************************
  67  * vout_sys_t: video output method descriptor
  68  *****************************************************************************
  69  * This structure is part of the video output thread descriptor.
  70  * It describes the aa specific properties of an output thread.
  71  *****************************************************************************/
  72 struct vout_sys_t
  73 {
  74     uint32_t            i_width;                     /* width of main window */
  75     uint32_t            i_height;                   /* height of main window */
  76     uint32_t            i_screen_depth;
  77     bool          b_double_buffered;
  78
  79     uint32_t            u_current; /* Current output resolution. */
  80     CascadeScreen      *p_screen;
  81 };
  82
  83 struct picture_sys_t
  84 {
  85     CascadeSharedMemZone *p_image;
  86 };
  87
  88 /*****************************************************************************
  89  * Create: allocates video thread output method
  90  *****************************************************************************
  91  * This function allocates and initializes a aa vout method.
  92  *****************************************************************************/
  93 static int Create( vlc_object_t *p_this )
  94 {
  95     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  96     bool b_double_buffered = false;
  97
  98     p_vout->p_sys = (struct vout_sys_t*) malloc( sizeof(struct vout_sys_t) );
  99     if( p_vout->p_sys == NULL )
 100     {
 101         msg_Err( p_vout, "out of memory" );
 102         return VLC_EGENERIC;
 103     }
 104
 105     /* Allocate a screen for VLC vout. */
 106     p_vout->p_sys->p_screen = new CascadeScreen();
 107     if( p_vout->p_sys->p_screen == NULL )
 108     {
 109         msg_Err( p_vout, "unable to allocate screen" );
 110         free( p_vout->p_sys );
 111         return VLC_EGENERIC;
 112     }
 113
 114     p_vout->pf_init = Init;
 115     p_vout->pf_end = End;
 116     p_vout->pf_manage = NULL;
 117     p_vout->pf_render = NULL;
 118     p_vout->pf_display = Display;
 119
 120     /* Get current screen resolution */
 121     msg_Dbg( p_vout, "number of screen resolutions supported %u",
 122       p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported() );
 123
 124     p_vout->p_sys->p_screen->GetCurrentScreenResolution( (u32) p_vout->p_sys->u_current );
 125     p_vout->p_sys->p_screen->SetScreenResolution( (u32) p_vout->p_sys->u_current );
 126
 127 #if 1
 128     msg_Dbg( p_vout, "available screen resolutions:" );
 129     for (u32 i=0; i<p_vout->p_sys->p_screen->GetNumScreenResolutionsSupported(); i++)
 130     {
 131         u32 i_width=0;
 132     u32 i_height=0;
 133     u8 i_screen_depth=0;
 134     bool b_buffered;
 135
 136         p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( i,
 137             i_width, i_height, i_screen_depth, b_buffered);
 138         msg_Dbg( p_vout, "  screen index = %u, width = %u, height = %u, depth = %u, double buffered = %s",
 139             i, i_width, i_height, i_screen_depth, (b_buffered ? "yes" : "no") );
 140     }
 141 #endif
 142
 143     p_vout->p_sys->p_screen->GetSupportedScreenResolutionAt( (u32) p_vout->p_sys->u_current,
 144             (u32) p_vout->p_sys->i_width,
 145             (u32) p_vout->p_sys->i_height,
 146             (u8) p_vout->p_sys->i_screen_depth,
 147             b_double_buffered );
 148     p_vout->p_sys->b_double_buffered = (bool) b_double_buffered;
 149     msg_Dbg( p_vout, "using screen index = %u, width = %u, height = %u, depth = %u, double buffered = %d",
 150             p_vout->p_sys->u_current, /* Current screen. */
 151             p_vout->p_sys->i_width,
 152             p_vout->p_sys->i_height,
 153             p_vout->p_sys->i_screen_depth,
 154             p_vout->p_sys->b_double_buffered );
 155
 156     return VLC_SUCCESS;
 157 }
 158
 159 static void Destroy( vlc_object_t *p_this )
 160 {
 161     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 162
 163     delete p_vout->p_sys->p_screen;
 164     free( p_vout->p_sys );
 165 }
 166
 167 /*****************************************************************************
 168  * Init: initialize video thread output method
 169  *****************************************************************************/
 170 static int Init( vout_thread_t *p_vout )
 171 {
 172     int i_index;
 173     picture_t *p_pic = NULL;
 174
 175     I_OUTPUTPICTURES = 0;
 176
 177     p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 178     p_vout->output.i_width = p_vout->p_sys->i_width;
 179     p_vout->output.i_height = p_vout->p_sys->i_height;
 180     p_vout->output.i_aspect = p_vout->p_sys->i_width
 181                                * VOUT_ASPECT_FACTOR / p_vout->p_sys->i_height;
 182
 183     /* Only RGBA 32bpp is supported by output device. */
 184     switch( p_vout->p_sys->i_screen_depth )
 185     {
 186         case 8: /* FIXME: set the palette */
 187             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2'); break;
 188         case 15:
 189             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','5'); break;
 190         case 16:
 191             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6'); break;
 192         case 24:
 193             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4'); break;
 194         case 32:
 195             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2'); break;
 196         default:
 197             msg_Err( p_vout, "unknown screen depth %i",
 198                      p_vout->p_sys->i_screen_depth );
 199             return VLC_SUCCESS;
 200     }
 201
 202     /* Find an empty picture slot */
 203     for( i_index = 0 ; i_index < VOUT_MAX_PICTURES ; i_index++ )
 204     {
 205         if( p_vout->p_picture[ i_index ].i_status == FREE_PICTURE )
 206         {
 207             p_pic = p_vout->p_picture + i_index;
 208             break;
 209         }
 210     }
 211
 212     if( p_pic == NULL || NewPicture( p_vout, p_pic ) )
 213     {
 214         return -1;
 215     }
 216
 217     /* Allocate the picture */
 218     p_pic->p->i_lines = p_vout->p_sys->i_height;
 219     p_pic->p->i_visible_lines = p_vout->p_sys->i_height;
 220     p_pic->p->i_pitch = p_vout->p_sys->i_width;
 221     p_pic->p->i_pixel_pitch = 1;
 222     p_pic->p->i_visible_pitch = p_vout->p_sys->i_width;
 223     p_pic->i_planes = 1;
 224
 225     p_pic->i_status = DESTROYED_PICTURE;
 226     p_pic->i_type   = DIRECT_PICTURE;
 227
 228     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 229     I_OUTPUTPICTURES++;
 230
 231     return VLC_SUCCESS;
 232 }
 233
 234 /*****************************************************************************
 235  * End: terminate video thread output method
 236  *****************************************************************************/
 237 static void End( vout_thread_t *p_vout )
 238 {
 239     int i_index;
 240
 241     /* Free the direct buffers we allocated */
 242     for( i_index = I_OUTPUTPICTURES ; i_index ; )
 243     {
 244         i_index--;
 245         FreePicture( p_vout, PP_OUTPUTPICTURE[ i_index ] );
 246     }
 247 }
 248
 249 /*****************************************************************************
 250  * NewPicture: Allocate shared memory zone for video output
 251  *****************************************************************************/
 252 static int NewPicture( vout_thread_t *p_vout, picture_t *p_pic )
 253 {
 254     CascadeDims p_dims = p_vout->p_sys->p_screen->GetDims();
 255
 256     p_pic->p_sys = (picture_sys_t *) malloc( sizeof( picture_sys_t ) );
 257     if( p_pic->p_sys == NULL )
 258     {
 259         return -1;
 260     }
 261
 262     /* Fill in picture_t fields */
 263     vout_InitPicture( VLC_OBJECT(p_vout), p_pic, p_vout->output.i_chroma,
 264                       p_vout->output.i_width, p_vout->output.i_height,
 265                       p_vout->output.i_aspect );
 266
 267     p_pic->p_sys->p_image = new CascadeSharedMemZone();
 268     if( p_pic->p_sys->p_image == NULL )
 269     {
 270         free( p_pic->p_sys );
 271         return -1;
 272     }
 273
 274     if( p_pic->p_sys->p_image->Open( "vlc_hd1000v", p_vout->output.i_width *
 275             p_vout->output.i_height * p_vout->p_sys->i_screen_depth,
 276             true ) )
 277     {
 278         msg_Err( p_vout, "failed to allocate shared memory" );
 279         free( p_pic->p_sys );
 280         return -1;
 281     }
 282
 283     p_pic->p->i_lines = p_vout->output.i_height;
 284     p_pic->p->i_visible_lines = p_vout->output.i_height;
 285     p_pic->p->p_pixels = (uint8_t*) p_pic->p_sys->p_image->MapLock();
 286     p_pic->p->i_pitch = p_vout->p_sys->i_screen_depth;
 287     p_pic->p->i_visible_pitch = p_pic->p->i_pixel_pitch
 288                                  * p_vout->output.i_width;
 289
 290     return VLC_SUCCESS;
 291 }
 292
 293 /*****************************************************************************
 294  * FreePicture: destroy a picture allocated with NewPicture
 295  *****************************************************************************
 296  * Destroy SharedMemZoned AND associated data. The picture normally will be
 297  * unlocked in the Display() function except when the video output is closed
 298  * before the picture is displayed.
 299  *****************************************************************************/
 300 static void FreePicture( vout_thread_t *p_vout, picture_t *p_pic )
 301 {
 302     if( p_pic->p_sys->p_image->Unlock() )
 303     { /* Just a test to see the effect described above. REMOVE THIS */
 304         msg_Err( p_vout, "unlocking shared memory failed, already unlocked" );
 305     }
 306
 307     if( p_pic->p_sys->p_image->Close() )
 308     {
 309         msg_Err( p_vout, "closing shared memory failed. Leaking memory of %ul",
 310                     p_pic->p_sys->p_image->GetSize() );
 311     }
 312
 313     delete p_pic->p_sys->p_image;
 314     free( p_pic->p_sys );
 315 }
 316
 317 /*****************************************************************************
 318  * Display: Map p_image onto the screen
 319  *****************************************************************************/
 320 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 321 {
 322     uint32_t i_width, i_height, i_x, i_y;
 323     uint32_t i_offset = 0;
 324
 325     vout_PlacePicture( p_vout, p_vout->p_sys->i_width,
 326                        p_vout->p_sys->i_height,
 327                        &i_x, &i_y, &i_width, &i_height );
 328     msg_Dbg( p_vout, "PlacePicture at x_left = %d, y_left = %d, x_bottom = %d, y_bottom = %d",
 329                 i_x, i_y, i_width, i_height );
 330
 331     /* Currently the only pixel format supported is 32bpp RGBA.*/
 332     p_vout->p_sys->p_screen->LockScreen();
 333
 334     /* Unlock the shared memory region first. */
 335     if( p_pic->p_sys->p_image->Unlock() )
 336     {
 337         msg_Err( p_vout, "unlocking shared memory failed. Expect threading problems." );
 338     }
 339
 340     p_vout->p_sys->p_screen->Blit( CascadePoint( (u32) i_x, (u32) i_y ), /* Place bitmap at */
 341             (*p_pic->p_sys->p_image)   ,                                      /* Image data */
 342             (u32) i_offset,                                   /* Offset in SharedMemoryZone */
 343             (u32) i_width,                                           /* Source bitmap width */
 344             (u32) i_height,                                         /* Source bitmap height */
 345             (u32) p_vout->p_sys->i_screen_depth,                      /* Source pixel depth */
 346             CascadeRect( (u32) i_x, (u32) i_y, (u32) i_width, (u32) i_height ) );
 347
 348     p_vout->p_sys->p_screen->UnlockScreen();
 349 }