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 #ifdef HAVE_CONFIG_H
  31 # include "config.h"
  32 #endif
  33
  34 #include <vlc/vlc.h>
  35 #include <vlc_vout.h>
  36 #include <directfb.h>
  37
  38 /*****************************************************************************
  39  * Local prototypes
  40  *****************************************************************************/
  41 static int  Create    ( vlc_object_t * );
  42 static void Destroy   ( vlc_object_t * );
  43
  44 static int  Init      ( vout_thread_t * );
  45 static void End       ( vout_thread_t * );
  46 static int  Manage    ( vout_thread_t * );
  47 static void Display   ( vout_thread_t *, picture_t * );
  48
  49 static int  OpenDisplay    ( vout_thread_t * );
  50 static void CloseDisplay   ( vout_thread_t * );
  51
  52 struct vout_sys_t
  53 {
  54     IDirectFB *p_directfb;
  55     IDirectFBSurface *p_primary;
  56     DFBSurfacePixelFormat p_pixel_format;
  57
  58     int i_width;
  59     int i_height;
  60
  61     byte_t* p_pixels;
  62 };
  63
  64 /*****************************************************************************
  65  * Module descriptor
  66  *****************************************************************************/
  67 vlc_module_begin();
  68     set_shortname( "DirectFB" );
  69     set_category( CAT_VIDEO );
  70     set_subcategory( SUBCAT_VIDEO_VOUT );
  71     set_description( _("DirectFB video output http://www.directfb.org/") );
  72     set_capability( "video output", 60 );
  73     add_shortcut( "directfb" );
  74     set_callbacks( Create, Destroy );
  75 vlc_module_end();
  76
  77
  78 static int Create( vlc_object_t *p_this )
  79 {
  80     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  81     vout_sys_t *p_sys = NULL;
  82     p_vout->pf_init = Init;
  83     p_vout->pf_end = End;
  84     p_vout->pf_manage = Manage;
  85     p_vout->pf_render = NULL;
  86     p_vout->pf_display = Display;
  87
  88     /* Allocate structure */
  89     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
  90     if( !p_sys )
  91     {
  92         msg_Err( p_vout, "out of memory" );
  93         return VLC_ENOMEM;
  94     }
  95
  96     p_sys->p_directfb = NULL;
  97     p_sys->p_primary = NULL;
  98     p_sys->p_pixels = NULL;
  99     p_sys->i_width = 0;
 100     p_sys->i_height = 0;
 101
 102     /* Init DirectFB */
 103     if( DirectFBInit(NULL,NULL) != DFB_OK )
 104     {
 105         msg_Err(p_vout, "Cannot init DirectFB");
 106         return VLC_EGENERIC;
 107     }
 108
 109     if( OpenDisplay( p_vout ) )
 110     {
 111         msg_Err(p_vout, "Cannot create primary surface");
 112         free( p_sys );
 113         return VLC_EGENERIC;
 114     }
 115     return VLC_SUCCESS;
 116 }
 117
 118
 119 static int Init( vout_thread_t *p_vout )
 120 {
 121     vout_sys_t *p_sys = p_vout->p_sys;
 122     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_vout->p_sys->p_primary;
 123     byte_t* p_pixels = NULL;
 124     picture_t *p_pic = NULL;
 125     int i_rlength, i_glength, i_blength;
 126     int i_roffset, i_goffset, i_boffset;
 127     int i_line_pitch;
 128     int i_size;
 129     int i_index;
 130
 131     I_OUTPUTPICTURES = 0;
 132
 133     switch( p_sys->p_pixel_format )
 134     {
 135         case DSPF_RGB332:
 136             /* 8 bit RGB (1 byte, red 3@5, green 3@2, blue 2@0) */
 137             /* i_pixel_pitch = 1; */
 138             i_rlength = 3;
 139             i_roffset = 5;
 140             i_glength = 3;
 141             i_goffset = 2;
 142             i_blength = 2;
 143             i_boffset = 0;
 144             p_vout->output.i_chroma = VLC_FOURCC('R','G','B','2');
 145             break;
 146
 147         case DSPF_RGB16:
 148             /* 16 bit RGB (2 byte, red 5@11, green 6@5, blue 5@0) */
 149             /* i_pixel_pitch = 2; */
 150             i_rlength = 5;
 151             i_roffset = 11;
 152             i_glength = 6;
 153             i_goffset = 5;
 154             i_blength = 5;
 155             i_boffset = 0;
 156             p_vout->output.i_chroma = VLC_FOURCC('R','V','1','6');
 157             break;
 158
 159         case DSPF_RGB24:
 160             /* 24 bit RGB (3 byte, red 8@16, green 8@8, blue 8@0) */
 161             /* i_pixel_pitch = 3; */
 162             i_rlength = 8;
 163             i_roffset = 16;
 164             i_glength = 8;
 165             i_goffset = 8;
 166             i_blength = 8;
 167             i_boffset = 0;
 168             p_vout->output.i_chroma = VLC_FOURCC('R','V','2','4');
 169             break;
 170
 171         case DSPF_RGB32:
 172             /* 24 bit RGB (4 byte, nothing@24, red 8@16, green 8@8, blue 8@0) */
 173             /* i_pixel_pitch = 4; */
 174             i_rlength = 8;
 175             i_roffset = 16;
 176             i_glength = 8;
 177             i_goffset = 8;
 178             i_blength = 8;
 179             i_boffset = 0;
 180             p_vout->output.i_chroma = VLC_FOURCC('R','V','3','2');
 181             break;
 182
 183         default:
 184             msg_Err( p_vout, "unknown screen depth %i",
 185                      p_sys->p_pixel_format );
 186             return VLC_EGENERIC;
 187     }
 188     /* Set the RGB masks */
 189     p_vout->output.i_rmask = ( (1 << i_rlength) - 1 ) << i_roffset;
 190     p_vout->output.i_gmask = ( (1 << i_glength) - 1 ) << i_goffset;
 191     p_vout->output.i_bmask = ( (1 << i_blength) - 1 ) << i_boffset;
 192
 193     /* Width and height */
 194     p_vout->output.i_width  = p_sys->i_width;
 195     p_vout->output.i_height = p_sys->i_height;
 196
 197     /* The aspect */
 198     p_vout->output.i_aspect = (p_sys->i_width * VOUT_ASPECT_FACTOR) /
 199                                p_sys->i_height;
 200
 201     /* Try to initialize 1 buffer */
 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     /* Allocate the picture */
 213     if( !p_pic )
 214         return VLC_EGENERIC;
 215
 216     /* get the pixels */
 217     if( p_primary->Lock( p_primary, DSLF_READ, (void **) &p_pixels,
 218                          &i_line_pitch) != DFB_OK )
 219         return VLC_EGENERIC;
 220
 221     /* allocate p_pixels */
 222     i_size = i_line_pitch * p_sys->i_height;
 223     p_sys->p_pixels = malloc( sizeof(byte_t) * i_size );
 224     if( p_sys->p_pixels == NULL )
 225     {
 226         p_primary->Unlock(p_primary);
 227         return VLC_ENOMEM;
 228     }
 229
 230     /* copy pixels */
 231     memcpy( p_sys->p_pixels,  p_pixels, i_size );
 232     if( p_primary->Unlock(p_primary) != DFB_OK )
 233     {
 234         return VLC_EGENERIC;
 235     }
 236
 237     p_pic->p->p_pixels = p_sys->p_pixels;
 238     p_pic->p->i_pixel_pitch = i_line_pitch / p_sys->i_width;
 239     p_pic->p->i_lines = p_sys->i_height;
 240     p_pic->p->i_visible_lines = p_sys->i_height;
 241     p_pic->p->i_pitch = i_line_pitch;
 242     p_pic->p->i_visible_pitch = i_line_pitch;
 243     p_pic->i_planes = 1;
 244     p_pic->i_status = DESTROYED_PICTURE;
 245     p_pic->i_type   = DIRECT_PICTURE;
 246
 247     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 248
 249     I_OUTPUTPICTURES++;
 250
 251     return VLC_SUCCESS;
 252 }
 253
 254 static void End( vout_thread_t *p_vout )
 255 {
 256     vout_sys_t *p_sys = p_vout->p_sys;
 257
 258     if( p_sys->p_pixels )
 259         free( p_sys->p_pixels );
 260 }
 261
 262 static void Destroy( vlc_object_t *p_this )
 263 {
 264     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 265     vout_sys_t *p_sys = p_vout->p_sys;
 266
 267     CloseDisplay( p_vout );
 268     if( p_sys ) free( p_sys );
 269     p_sys = NULL;
 270 }
 271
 272 static int Manage( vout_thread_t *p_vout )
 273 {
 274     return VLC_SUCCESS;
 275 }
 276
 277 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 278 {
 279     vout_sys_t *p_sys = p_vout->p_sys;
 280     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_sys->p_primary;
 281     byte_t* p_pixels = NULL;
 282     int i_size;
 283     int i_line_pitch;
 284
 285     /* get the pixels */
 286     if( p_primary->Lock( p_primary, DSLF_WRITE,
 287                          (void **) &p_pixels,
 288                          &i_line_pitch) == DFB_OK )
 289     {
 290         i_size = i_line_pitch * p_vout->p_sys->i_height;
 291
 292         /* copy pixels */
 293         memcpy( p_pixels, p_pic->p->p_pixels, i_size);
 294         if( p_primary->Unlock(p_primary) == DFB_OK )
 295         {
 296             p_primary->Flip(p_primary, NULL, 0);
 297         }
 298     }
 299 }
 300
 301 static int OpenDisplay( vout_thread_t *p_vout )
 302 {
 303     vout_sys_t *p_sys = p_vout->p_sys;
 304     IDirectFB *p_directfb = NULL;
 305     IDirectFBSurface *p_primary = NULL;
 306     DFBSurfaceDescription dsc;
 307
 308     /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
 309     dsc.flags = DSDESC_CAPS;
 310     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
 311
 312     /*dsc.width = 352;*/
 313     /*dsc.height = 240;*/
 314     if( DirectFBCreate( &p_directfb ) != DFB_OK )
 315         return VLC_EGENERIC;
 316
 317     p_sys->p_directfb = p_directfb;
 318     if( !p_directfb )
 319         return VLC_EGENERIC;
 320
 321     if( p_directfb->CreateSurface( p_directfb, &dsc, &p_primary ) )
 322         return VLC_EGENERIC;
 323
 324     p_sys->p_primary = p_primary;
 325     if( !p_primary )
 326         return VLC_EGENERIC;
 327
 328     p_primary->GetSize( p_primary, &p_sys->i_width,
 329                         &p_sys->i_height );
 330     p_primary->GetPixelFormat( p_primary, &p_sys->p_pixel_format );
 331     p_primary->FillRectangle( p_primary, 0, 0, p_sys->i_width,
 332                               p_sys->i_height );
 333     p_primary->Flip( p_primary, NULL, 0 );
 334
 335     return VLC_SUCCESS;
 336 }
 337
 338 static void CloseDisplay( vout_thread_t *p_vout )
 339 {
 340     vout_sys_t *p_sys = p_vout->p_sys;
 341     IDirectFB *p_directfb = p_sys->p_directfb;
 342     IDirectFBSurface *p_primary = p_sys->p_primary;
 343
 344     if( p_primary )
 345         p_primary->Release( p_primary );
 346
 347     if( p_directfb )
 348         p_directfb->Release( p_directfb );
 349 }