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