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 #include <string.h>                                            /* strerror() */
  30
  31 #include <vlc/vlc.h>
  32 #include <vlc_vout.h>
  33 #include <directfb.h>
  34
  35 /*****************************************************************************
  36  * Local prototypes
  37  *****************************************************************************/
  38 static int  Create    ( vlc_object_t * );
  39 static void Destroy   ( vlc_object_t * );
  40
  41 static int  Init      ( vout_thread_t * );
  42 static void End       ( vout_thread_t * );
  43 static int  Manage    ( vout_thread_t * );
  44 static void Display   ( vout_thread_t *, picture_t * );
  45
  46 static int  OpenDisplay    ( vout_thread_t * );
  47 static void CloseDisplay   ( vout_thread_t * );
  48
  49 struct vout_sys_t
  50 {
  51     IDirectFB *p_directfb;
  52     IDirectFBSurface *p_primary;
  53     DFBSurfacePixelFormat p_pixel_format;
  54
  55     int i_width;
  56     int i_height;
  57
  58     byte_t* p_pixels;
  59 };
  60
  61 /*****************************************************************************
  62  * Module descriptor
  63  *****************************************************************************/
  64 vlc_module_begin();
  65     set_shortname( "DirectFB" );
  66     set_category( CAT_VIDEO );
  67     set_subcategory( SUBCAT_VIDEO_VOUT );
  68     set_description( _("DirectFB video output http://www.directfb.org/") );
  69     set_capability( "video output", 60 );
  70     add_shortcut( "directfb" );
  71     set_callbacks( Create, Destroy );
  72 vlc_module_end();
  73
  74
  75 static int Create( vlc_object_t *p_this )
  76 {
  77     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  78     vout_sys_t *p_sys = NULL;
  79     p_vout->pf_init = Init;
  80     p_vout->pf_end = End;
  81     p_vout->pf_manage = Manage;
  82     p_vout->pf_render = NULL;
  83     p_vout->pf_display = Display;
  84
  85     /* Allocate structure */
  86     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
  87     if( !p_sys )
  88     {
  89         msg_Err( p_vout, "out of memory" );
  90         return VLC_ENOMEM;
  91     }
  92
  93     p_sys->p_directfb = NULL;
  94     p_sys->p_primary = NULL;
  95     p_sys->p_pixels = NULL;
  96     p_sys->i_width = 0;
  97     p_sys->i_height = 0;
  98
  99     /* Init DirectFB */
 100     if( DirectFBInit(NULL,NULL) != DFB_OK )
 101     {
 102         msg_Err(p_vout, "Cannot init DirectFB");
 103         return VLC_EGENERIC;
 104     }
 105
 106     if( OpenDisplay( p_vout ) )
 107     {
 108         msg_Err(p_vout, "Cannot create primary surface");
 109         free( p_sys );
 110         return VLC_EGENERIC;
 111     }
 112     return VLC_SUCCESS;
 113 }
 114
 115
 116 static int Init( vout_thread_t *p_vout )
 117 {
 118     vout_sys_t *p_sys = p_vout->p_sys;
 119     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_vout->p_sys->p_primary;
 120     byte_t* p_pixels = NULL;
 121     picture_t *p_pic = NULL;
 122     int i_rlength, i_glength, i_blength;
 123     int i_roffset, i_goffset, i_boffset;
 124     int i_line_pitch;
 125     int i_size;
 126     int i_index;
 127
 128     I_OUTPUTPICTURES = 0;
 129
 130     switch( p_sys->p_pixel_format )
 131     {
 132         case DSPF_RGB332:
 133             /* 8 bit RGB (1 byte, red 3@5, green 3@2, blue 2@0) */
 134             /* i_pixel_pitch = 1; */
 135             i_rlength = 3;
 136             i_roffset = 5;
 137             i_glength = 3;
 138             i_goffset = 2;
 139             i_blength = 2;
 140             i_boffset = 0;
 141             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 142             break;
 143
 144         case DSPF_RGB16:
 145             /* 16 bit RGB (2 byte, red 5@11, green 6@5, blue 5@0) */
 146             /* i_pixel_pitch = 2; */
 147             i_rlength = 5;
 148             i_roffset = 11;
 149             i_glength = 6;
 150             i_goffset = 5;
 151             i_blength = 5;
 152             i_boffset = 0;
 153             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 154             break;
 155
 156         case DSPF_RGB24:
 157             /* 24 bit RGB (3 byte, red 8@16, green 8@8, blue 8@0) */
 158             /* i_pixel_pitch = 3; */
 159             i_rlength = 8;
 160             i_roffset = 16;
 161             i_glength = 8;
 162             i_goffset = 8;
 163             i_blength = 8;
 164             i_boffset = 0;
 165             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 166             break;
 167
 168         case DSPF_RGB32:
 169             /* 24 bit RGB (4 byte, nothing@24, red 8@16, green 8@8, blue 8@0) */
 170             /* i_pixel_pitch = 4; */
 171             i_rlength = 8;
 172             i_roffset = 16;
 173             i_glength = 8;
 174             i_goffset = 8;
 175             i_blength = 8;
 176             i_boffset = 0;
 177             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 178             break;
 179
 180         default:
 181             msg_Err( p_vout, "unknown screen depth %i",
 182                      p_sys->p_pixel_format );
 183             return VLC_EGENERIC;
 184     }
 185     /* Set the RGB masks */
 186     p_vout->output.i_rmask = ( (1 << i_rlength) - 1 ) << i_roffset;
 187     p_vout->output.i_gmask = ( (1 << i_glength) - 1 ) << i_goffset;
 188     p_vout->output.i_bmask = ( (1 << i_blength) - 1 ) << i_boffset;
 189
 190     /* Width and height */
 191     p_vout->output.i_width  = p_sys->i_width;
 192     p_vout->output.i_height = p_sys->i_height;
 193
 194     /* The aspect */
 195     p_vout->output.i_aspect = (p_sys->i_width * VOUT_ASPECT_FACTOR) /
 196                                p_sys->i_height;
 197
 198     /* Try to initialize 1 buffer */
 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     /* Allocate the picture */
 210     if( !p_pic )
 211         return VLC_EGENERIC;
 212
 213     /* get the pixels */
 214     if( p_primary->Lock( p_primary, DSLF_READ, (void **) &p_pixels,
 215                          &i_line_pitch) != DFB_OK )
 216         return VLC_EGENERIC;
 217
 218     /* allocate p_pixels */
 219     i_size = i_line_pitch * p_sys->i_height;
 220     p_sys->p_pixels = malloc( sizeof(byte_t) * i_size );
 221     if( p_sys->p_pixels == NULL )
 222     {
 223         p_primary->Unlock(p_primary);
 224         return VLC_ENOMEM;
 225     }
 226
 227     /* copy pixels */
 228     memcpy( p_sys->p_pixels,  p_pixels, i_size );
 229     if( p_primary->Unlock(p_primary) != DFB_OK )
 230     {
 231         return VLC_EGENERIC;
 232     }
 233
 234     p_pic->p->p_pixels = p_sys->p_pixels;
 235     p_pic->p->i_pixel_pitch = i_line_pitch / p_sys->i_width;
 236     p_pic->p->i_lines = p_sys->i_height;
 237     p_pic->p->i_visible_lines = p_sys->i_height;
 238     p_pic->p->i_pitch = i_line_pitch;
 239     p_pic->p->i_visible_pitch = i_line_pitch;
 240     p_pic->i_planes = 1;
 241     p_pic->i_status = DESTROYED_PICTURE;
 242     p_pic->i_type   = DIRECT_PICTURE;
 243
 244     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 245
 246     I_OUTPUTPICTURES++;
 247
 248     return VLC_SUCCESS;
 249 }
 250
 251 static void End( vout_thread_t *p_vout )
 252 {
 253     vout_sys_t *p_sys = p_vout->p_sys;
 254
 255     if( p_sys->p_pixels )
 256         free( p_sys->p_pixels );
 257 }
 258
 259 static void Destroy( vlc_object_t *p_this )
 260 {
 261     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 262     vout_sys_t *p_sys = p_vout->p_sys;
 263
 264     CloseDisplay( p_vout );
 265     if( p_sys ) free( p_sys );
 266     p_sys = NULL;
 267 }
 268
 269 static int Manage( vout_thread_t *p_vout )
 270 {
 271     return VLC_SUCCESS;
 272 }
 273
 274 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 275 {
 276     vout_sys_t *p_sys = p_vout->p_sys;
 277     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_sys->p_primary;
 278     byte_t* p_pixels = NULL;
 279     int i_size;
 280     int i_line_pitch;
 281
 282     /* get the pixels */
 283     if( p_primary->Lock( p_primary, DSLF_WRITE,
 284                          (void **) &p_pixels,
 285                          &i_line_pitch) == DFB_OK )
 286     {
 287         i_size = i_line_pitch * p_vout->p_sys->i_height;
 288
 289         /* copy pixels */
 290         memcpy( p_pixels, p_pic->p->p_pixels, i_size);
 291         if( p_primary->Unlock(p_primary) == DFB_OK )
 292         {
 293             p_primary->Flip(p_primary, NULL, 0);
 294         }
 295     }
 296 }
 297
 298 static int OpenDisplay( vout_thread_t *p_vout )
 299 {
 300     vout_sys_t *p_sys = p_vout->p_sys;
 301     IDirectFB *p_directfb = NULL;
 302     IDirectFBSurface *p_primary = NULL;
 303     DFBSurfaceDescription dsc;
 304
 305     /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
 306     dsc.flags = DSDESC_CAPS;
 307     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
 308
 309     /*dsc.width = 352;*/
 310     /*dsc.height = 240;*/
 311     if( DirectFBCreate( &p_directfb ) != DFB_OK )
 312         return VLC_EGENERIC;
 313
 314     p_sys->p_directfb = p_directfb;
 315     if( !p_directfb )
 316         return VLC_EGENERIC;
 317
 318     if( p_directfb->CreateSurface( p_directfb, &dsc, &p_primary ) )
 319         return VLC_EGENERIC;
 320
 321     p_sys->p_primary = p_primary;
 322     if( !p_primary )
 323         return VLC_EGENERIC;
 324
 325     p_primary->GetSize( p_primary, &p_sys->i_width,
 326                         &p_sys->i_height );
 327     p_primary->GetPixelFormat( p_primary, &p_sys->p_pixel_format );
 328     p_primary->FillRectangle( p_primary, 0, 0, p_sys->i_width,
 329                               p_sys->i_height );
 330     p_primary->Flip( p_primary, NULL, 0 );
 331
 332     return VLC_SUCCESS;
 333 }
 334
 335 static void CloseDisplay( vout_thread_t *p_vout )
 336 {
 337     vout_sys_t *p_sys = p_vout->p_sys;
 338     IDirectFB *p_directfb = p_sys->p_directfb;
 339     IDirectFBSurface *p_primary = p_sys->p_primary;
 340
 341     if( p_primary )
 342         p_primary->Release( p_primary );
 343
 344     if( p_directfb )
 345         p_directfb->Release( p_directfb );
 346 }