git.sesse.net Git - vlc/blob - modules/video_output/directfb.c

   1 /*****************************************************************************
   2  * directfb.c: DirectFB video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2005 the VideoLAN team
   5  *
   6  * Authors: Iuri Diniz <iuri@digizap.com.br>
   7  *
   8  * This code is based in sdl.c and fb.c, thanks for VideoLAN team.
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #include <errno.h>                                                 /* ENOMEM */
  29
  30 #include <vlc/vlc.h>
  31 #include <vlc_vout.h>
  32 #include <directfb.h>
  33
  34 /*****************************************************************************
  35  * Local prototypes
  36  *****************************************************************************/
  37 static int  Create    ( vlc_object_t * );
  38 static void Destroy   ( vlc_object_t * );
  39
  40 static int  Init      ( vout_thread_t * );
  41 static void End       ( vout_thread_t * );
  42 static int  Manage    ( vout_thread_t * );
  43 static void Display   ( vout_thread_t *, picture_t * );
  44
  45 static int  OpenDisplay    ( vout_thread_t * );
  46 static void CloseDisplay   ( vout_thread_t * );
  47
  48 struct vout_sys_t
  49 {
  50     IDirectFB *p_directfb;
  51     IDirectFBSurface *p_primary;
  52     DFBSurfacePixelFormat p_pixel_format;
  53
  54     int i_width;
  55     int i_height;
  56
  57     byte_t* p_pixels;
  58 };
  59
  60 /*****************************************************************************
  61  * Module descriptor
  62  *****************************************************************************/
  63 vlc_module_begin();
  64     set_shortname( "DirectFB" );
  65     set_category( CAT_VIDEO );
  66     set_subcategory( SUBCAT_VIDEO_VOUT );
  67     set_description( _("DirectFB video output http://www.directfb.org/") );
  68     set_capability( "video output", 60 );
  69     add_shortcut( "directfb" );
  70     set_callbacks( Create, Destroy );
  71 vlc_module_end();
  72
  73
  74 static int Create( vlc_object_t *p_this )
  75 {
  76     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  77     vout_sys_t *p_sys = NULL;
  78     p_vout->pf_init = Init;
  79     p_vout->pf_end = End;
  80     p_vout->pf_manage = Manage;
  81     p_vout->pf_render = NULL;
  82     p_vout->pf_display = Display;
  83
  84     /* Allocate structure */
  85     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
  86     if( !p_sys )
  87     {
  88         msg_Err( p_vout, "out of memory" );
  89         return VLC_ENOMEM;
  90     }
  91
  92     p_sys->p_directfb = NULL;
  93     p_sys->p_primary = NULL;
  94     p_sys->p_pixels = NULL;
  95     p_sys->i_width = 0;
  96     p_sys->i_height = 0;
  97
  98     /* Init DirectFB */
  99     if( DirectFBInit(NULL,NULL) != DFB_OK )
 100     {
 101         msg_Err(p_vout, "Cannot init DirectFB");
 102         return VLC_EGENERIC;
 103     }
 104
 105     if( OpenDisplay( p_vout ) )
 106     {
 107         msg_Err(p_vout, "Cannot create primary surface");
 108         free( p_sys );
 109         return VLC_EGENERIC;
 110     }
 111     return VLC_SUCCESS;
 112 }
 113
 114
 115 static int Init( vout_thread_t *p_vout )
 116 {
 117     vout_sys_t *p_sys = p_vout->p_sys;
 118     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_vout->p_sys->p_primary;
 119     byte_t* p_pixels = NULL;
 120     picture_t *p_pic = NULL;
 121     int i_rlength, i_glength, i_blength;
 122     int i_roffset, i_goffset, i_boffset;
 123     int i_line_pitch;
 124     int i_size;
 125     int i_index;
 126
 127     I_OUTPUTPICTURES = 0;
 128
 129     switch( p_sys->p_pixel_format )
 130     {
 131         case DSPF_RGB332:
 132             /* 8 bit RGB (1 byte, red 3@5, green 3@2, blue 2@0) */
 133             /* i_pixel_pitch = 1; */
 134             i_rlength = 3;
 135             i_roffset = 5;
 136             i_glength = 3;
 137             i_goffset = 2;
 138             i_blength = 2;
 139             i_boffset = 0;
 140             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 141             break;
 142
 143         case DSPF_RGB16:
 144             /* 16 bit RGB (2 byte, red 5@11, green 6@5, blue 5@0) */
 145             /* i_pixel_pitch = 2; */
 146             i_rlength = 5;
 147             i_roffset = 11;
 148             i_glength = 6;
 149             i_goffset = 5;
 150             i_blength = 5;
 151             i_boffset = 0;
 152             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 153             break;
 154
 155         case DSPF_RGB24:
 156             /* 24 bit RGB (3 byte, red 8@16, green 8@8, blue 8@0) */
 157             /* i_pixel_pitch = 3; */
 158             i_rlength = 8;
 159             i_roffset = 16;
 160             i_glength = 8;
 161             i_goffset = 8;
 162             i_blength = 8;
 163             i_boffset = 0;
 164             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 165             break;
 166
 167         case DSPF_RGB32:
 168             /* 24 bit RGB (4 byte, nothing@24, red 8@16, green 8@8, blue 8@0) */
 169             /* i_pixel_pitch = 4; */
 170             i_rlength = 8;
 171             i_roffset = 16;
 172             i_glength = 8;
 173             i_goffset = 8;
 174             i_blength = 8;
 175             i_boffset = 0;
 176             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 177             break;
 178
 179         default:
 180             msg_Err( p_vout, "unknown screen depth %i",
 181                      p_sys->p_pixel_format );
 182             return VLC_EGENERIC;
 183     }
 184     /* Set the RGB masks */
 185     p_vout->output.i_rmask = ( (1 << i_rlength) - 1 ) << i_roffset;
 186     p_vout->output.i_gmask = ( (1 << i_glength) - 1 ) << i_goffset;
 187     p_vout->output.i_bmask = ( (1 << i_blength) - 1 ) << i_boffset;
 188
 189     /* Width and height */
 190     p_vout->output.i_width  = p_sys->i_width;
 191     p_vout->output.i_height = p_sys->i_height;
 192
 193     /* The aspect */
 194     p_vout->output.i_aspect = (p_sys->i_width * VOUT_ASPECT_FACTOR) /
 195                                p_sys->i_height;
 196
 197     /* Try to initialize 1 buffer */
 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     /* Allocate the picture */
 209     if( !p_pic )
 210         return VLC_EGENERIC;
 211
 212     /* get the pixels */
 213     if( p_primary->Lock( p_primary, DSLF_READ, (void **) &p_pixels,
 214                          &i_line_pitch) != DFB_OK )
 215         return VLC_EGENERIC;
 216
 217     /* allocate p_pixels */
 218     i_size = i_line_pitch * p_sys->i_height;
 219     p_sys->p_pixels = malloc( sizeof(byte_t) * i_size );
 220     if( p_sys->p_pixels == NULL )
 221     {
 222         p_primary->Unlock(p_primary);
 223         return VLC_ENOMEM;
 224     }
 225
 226     /* copy pixels */
 227     memcpy( p_sys->p_pixels,  p_pixels, i_size );
 228     if( p_primary->Unlock(p_primary) != DFB_OK )
 229     {
 230         return VLC_EGENERIC;
 231     }
 232
 233     p_pic->p->p_pixels = p_sys->p_pixels;
 234     p_pic->p->i_pixel_pitch = i_line_pitch / p_sys->i_width;
 235     p_pic->p->i_lines = p_sys->i_height;
 236     p_pic->p->i_visible_lines = p_sys->i_height;
 237     p_pic->p->i_pitch = i_line_pitch;
 238     p_pic->p->i_visible_pitch = i_line_pitch;
 239     p_pic->i_planes = 1;
 240     p_pic->i_status = DESTROYED_PICTURE;
 241     p_pic->i_type   = DIRECT_PICTURE;
 242
 243     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 244
 245     I_OUTPUTPICTURES++;
 246
 247     return VLC_SUCCESS;
 248 }
 249
 250 static void End( vout_thread_t *p_vout )
 251 {
 252     vout_sys_t *p_sys = p_vout->p_sys;
 253
 254     if( p_sys->p_pixels )
 255         free( p_sys->p_pixels );
 256 }
 257
 258 static void Destroy( vlc_object_t *p_this )
 259 {
 260     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 261     vout_sys_t *p_sys = p_vout->p_sys;
 262
 263     CloseDisplay( p_vout );
 264     if( p_sys ) free( p_sys );
 265     p_sys = NULL;
 266 }
 267
 268 static int Manage( vout_thread_t *p_vout )
 269 {
 270     return VLC_SUCCESS;
 271 }
 272
 273 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 274 {
 275     vout_sys_t *p_sys = p_vout->p_sys;
 276     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_sys->p_primary;
 277     byte_t* p_pixels = NULL;
 278     int i_size;
 279     int i_line_pitch;
 280
 281     /* get the pixels */
 282     if( p_primary->Lock( p_primary, DSLF_WRITE,
 283                          (void **) &p_pixels,
 284                          &i_line_pitch) == DFB_OK )
 285     {
 286         i_size = i_line_pitch * p_vout->p_sys->i_height;
 287
 288         /* copy pixels */
 289         memcpy( p_pixels, p_pic->p->p_pixels, i_size);
 290         if( p_primary->Unlock(p_primary) == DFB_OK )
 291         {
 292             p_primary->Flip(p_primary, NULL, 0);
 293         }
 294     }
 295 }
 296
 297 static int OpenDisplay( vout_thread_t *p_vout )
 298 {
 299     vout_sys_t *p_sys = p_vout->p_sys;
 300     IDirectFB *p_directfb = NULL;
 301     IDirectFBSurface *p_primary = NULL;
 302     DFBSurfaceDescription dsc;
 303
 304     /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
 305     dsc.flags = DSDESC_CAPS;
 306     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
 307
 308     /*dsc.width = 352;*/
 309     /*dsc.height = 240;*/
 310     if( DirectFBCreate( &p_directfb ) != DFB_OK )
 311         return VLC_EGENERIC;
 312
 313     p_sys->p_directfb = p_directfb;
 314     if( !p_directfb )
 315         return VLC_EGENERIC;
 316
 317     if( p_directfb->CreateSurface( p_directfb, &dsc, &p_primary ) )
 318         return VLC_EGENERIC;
 319
 320     p_sys->p_primary = p_primary;
 321     if( !p_primary )
 322         return VLC_EGENERIC;
 323
 324     p_primary->GetSize( p_primary, &p_sys->i_width,
 325                         &p_sys->i_height );
 326     p_primary->GetPixelFormat( p_primary, &p_sys->p_pixel_format );
 327     p_primary->FillRectangle( p_primary, 0, 0, p_sys->i_width,
 328                               p_sys->i_height );
 329     p_primary->Flip( p_primary, NULL, 0 );
 330
 331     return VLC_SUCCESS;
 332 }
 333
 334 static void CloseDisplay( vout_thread_t *p_vout )
 335 {
 336     vout_sys_t *p_sys = p_vout->p_sys;
 337     IDirectFB *p_directfb = p_sys->p_directfb;
 338     IDirectFBSurface *p_primary = p_sys->p_primary;
 339
 340     if( p_primary )
 341         p_primary->Release( p_primary );
 342
 343     if( p_directfb )
 344         p_directfb->Release( p_directfb );
 345 }