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

   1 /*****************************************************************************
   2  * directfb.c: DirectFB video output display method
   3  *****************************************************************************
   4  * Copyright (C) 2005-2009 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_common.h>
  35 #include <vlc_plugin.h>
  36 #include <vlc_vout.h>
  37 #include <directfb.h>
  38
  39 /*****************************************************************************
  40  * Local prototypes
  41  *****************************************************************************/
  42 static int  Create    ( vlc_object_t * );
  43 static void Destroy   ( vlc_object_t * );
  44
  45 static int  Init      ( vout_thread_t * );
  46 static void End       ( vout_thread_t * );
  47 static int  Manage    ( vout_thread_t * );
  48 static void Display   ( vout_thread_t *, picture_t * );
  49
  50 static int  OpenDisplay    ( vout_thread_t * );
  51 static void CloseDisplay   ( vout_thread_t * );
  52
  53 struct vout_sys_t
  54 {
  55     IDirectFB *p_directfb;
  56     IDirectFBSurface *p_primary;
  57     DFBSurfacePixelFormat p_pixel_format;
  58
  59     int i_width;
  60     int i_height;
  61
  62     uint8_t* p_pixels;
  63 };
  64
  65 /*****************************************************************************
  66  * Module descriptor
  67  *****************************************************************************/
  68 vlc_module_begin ()
  69     set_shortname( "DirectFB" )
  70     set_category( CAT_VIDEO )
  71     set_subcategory( SUBCAT_VIDEO_VOUT )
  72     set_description( N_("DirectFB video output http://www.directfb.org/") )
  73     set_capability( "video output", 60 )
  74     add_shortcut( "directfb" )
  75     set_callbacks( Create, Destroy )
  76 vlc_module_end ()
  77
  78
  79 static int Create( vlc_object_t *p_this )
  80 {
  81     vout_thread_t *p_vout = (vout_thread_t *)p_this;
  82     vout_sys_t *p_sys = NULL;
  83     p_vout->pf_init = Init;
  84     p_vout->pf_end = End;
  85     p_vout->pf_manage = Manage;
  86     p_vout->pf_render = NULL;
  87     p_vout->pf_display = Display;
  88
  89     /* Allocate structure */
  90     p_vout->p_sys = p_sys = malloc( sizeof( vout_sys_t ) );
  91     if( !p_sys )
  92         return VLC_ENOMEM;
  93
  94     p_sys->p_directfb = NULL;
  95     p_sys->p_primary = NULL;
  96     p_sys->p_pixels = NULL;
  97     p_sys->i_width = 0;
  98     p_sys->i_height = 0;
  99
 100     /* Init DirectFB */
 101     if( DirectFBInit(NULL,NULL) != DFB_OK )
 102     {
 103         msg_Err(p_vout, "Cannot init DirectFB");
 104         free( p_sys );
 105         return VLC_EGENERIC;
 106     }
 107
 108     if( OpenDisplay( p_vout ) )
 109     {
 110         msg_Err(p_vout, "Cannot create primary surface");
 111         free( p_sys );
 112         return VLC_EGENERIC;
 113     }
 114     return VLC_SUCCESS;
 115 }
 116
 117
 118 static int Init( vout_thread_t *p_vout )
 119 {
 120     vout_sys_t *p_sys = p_vout->p_sys;
 121     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_vout->p_sys->p_primary;
 122     uint8_t* p_pixels = NULL;
 123     picture_t *p_pic = NULL;
 124     int i_rlength, i_glength, i_blength;
 125     int i_roffset, i_goffset, i_boffset;
 126     int i_line_pitch;
 127     int i_size;
 128     int i_index;
 129
 130     I_OUTPUTPICTURES = 0;
 131
 132     switch( p_sys->p_pixel_format )
 133     {
 134         case DSPF_RGB332:
 135             /* 8 bit RGB (1 byte, red 3@5, green 3@2, blue 2@0) */
 136             /* i_pixel_pitch = 1; */
 137             i_rlength = 3;
 138             i_roffset = 5;
 139             i_glength = 3;
 140             i_goffset = 2;
 141             i_blength = 2;
 142             i_boffset = 0;
 143             p_vout->output.i_chroma = VLC_CODEC_RGB8;
 144             break;
 145
 146         case DSPF_RGB16:
 147             /* 16 bit RGB (2 byte, red 5@11, green 6@5, blue 5@0) */
 148             /* i_pixel_pitch = 2; */
 149             i_rlength = 5;
 150             i_roffset = 11;
 151             i_glength = 6;
 152             i_goffset = 5;
 153             i_blength = 5;
 154             i_boffset = 0;
 155             p_vout->output.i_chroma = VLC_CODEC_RGB16;
 156             break;
 157
 158         case DSPF_RGB24:
 159             /* 24 bit RGB (3 byte, red 8@16, green 8@8, blue 8@0) */
 160             /* i_pixel_pitch = 3; */
 161             i_rlength = 8;
 162             i_roffset = 16;
 163             i_glength = 8;
 164             i_goffset = 8;
 165             i_blength = 8;
 166             i_boffset = 0;
 167             p_vout->output.i_chroma = VLC_CODEC_RGB24;
 168             break;
 169
 170         case DSPF_RGB32:
 171             /* 24 bit RGB (4 byte, nothing@24, red 8@16, green 8@8, blue 8@0) */
 172             /* i_pixel_pitch = 4; */
 173             i_rlength = 8;
 174             i_roffset = 16;
 175             i_glength = 8;
 176             i_goffset = 8;
 177             i_blength = 8;
 178             i_boffset = 0;
 179             p_vout->output.i_chroma = VLC_CODEC_RGB32;
 180             break;
 181
 182         default:
 183             msg_Err( p_vout, "unknown screen depth %i",
 184                      p_sys->p_pixel_format );
 185             return VLC_EGENERIC;
 186     }
 187     /* Set the RGB masks */
 188     p_vout->output.i_rmask = ( (1 << i_rlength) - 1 ) << i_roffset;
 189     p_vout->output.i_gmask = ( (1 << i_glength) - 1 ) << i_goffset;
 190     p_vout->output.i_bmask = ( (1 << i_blength) - 1 ) << i_boffset;
 191
 192     /* Width and height */
 193     p_vout->output.i_width  = p_sys->i_width;
 194     p_vout->output.i_height = p_sys->i_height;
 195
 196     /* The aspect */
 197     p_vout->output.i_aspect = (p_sys->i_width * VOUT_ASPECT_FACTOR) /
 198                                p_sys->i_height;
 199
 200     /* Try to initialize 1 buffer */
 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     /* Allocate the picture */
 212     if( !p_pic )
 213         return VLC_EGENERIC;
 214
 215     /* get the pixels */
 216     if( p_primary->Lock( p_primary, DSLF_READ, (void **) &p_pixels,
 217                          &i_line_pitch) != DFB_OK )
 218         return VLC_EGENERIC;
 219
 220     /* allocate p_pixels */
 221     i_size = i_line_pitch * p_sys->i_height;
 222     p_sys->p_pixels = malloc( i_size );
 223     if( p_sys->p_pixels == NULL )
 224     {
 225         p_primary->Unlock(p_primary);
 226         return VLC_ENOMEM;
 227     }
 228
 229     /* copy pixels */
 230     memcpy( p_sys->p_pixels,  p_pixels, i_size );
 231     if( p_primary->Unlock(p_primary) != DFB_OK )
 232     {
 233         return VLC_EGENERIC;
 234     }
 235
 236     p_pic->p->p_pixels = p_sys->p_pixels;
 237     p_pic->p->i_pixel_pitch = i_line_pitch / p_sys->i_width;
 238     p_pic->p->i_lines = p_sys->i_height;
 239     p_pic->p->i_visible_lines = p_sys->i_height;
 240     p_pic->p->i_pitch = i_line_pitch;
 241     p_pic->p->i_visible_pitch = i_line_pitch;
 242     p_pic->i_planes = 1;
 243     p_pic->i_status = DESTROYED_PICTURE;
 244     p_pic->i_type   = DIRECT_PICTURE;
 245
 246     PP_OUTPUTPICTURE[ I_OUTPUTPICTURES ] = p_pic;
 247
 248     I_OUTPUTPICTURES++;
 249
 250     return VLC_SUCCESS;
 251 }
 252
 253 static void End( vout_thread_t *p_vout )
 254 {
 255     vout_sys_t *p_sys = p_vout->p_sys;
 256
 257     free( p_sys->p_pixels );
 258 }
 259
 260 static void Destroy( vlc_object_t *p_this )
 261 {
 262     vout_thread_t *p_vout = (vout_thread_t *)p_this;
 263     vout_sys_t *p_sys = p_vout->p_sys;
 264
 265     CloseDisplay( p_vout );
 266     free( p_sys );
 267     p_sys = NULL;
 268 }
 269
 270 static int Manage( vout_thread_t *p_vout )
 271 {
 272     return VLC_SUCCESS;
 273 }
 274
 275 static void Display( vout_thread_t *p_vout, picture_t *p_pic )
 276 {
 277     vout_sys_t *p_sys = p_vout->p_sys;
 278     IDirectFBSurface *p_primary = (IDirectFBSurface *) p_sys->p_primary;
 279     uint8_t* p_pixels = NULL;
 280     int i_size;
 281     int i_line_pitch;
 282
 283     /* get the pixels */
 284     if( p_primary->Lock( p_primary, DSLF_WRITE,
 285                          (void **) &p_pixels,
 286                          &i_line_pitch) == DFB_OK )
 287     {
 288         i_size = i_line_pitch * p_vout->p_sys->i_height;
 289
 290         /* copy pixels */
 291         memcpy( p_pixels, p_pic->p->p_pixels, i_size);
 292         if( p_primary->Unlock(p_primary) == DFB_OK )
 293         {
 294             p_primary->Flip(p_primary, NULL, 0);
 295         }
 296     }
 297 }
 298
 299 static int OpenDisplay( vout_thread_t *p_vout )
 300 {
 301     vout_sys_t *p_sys = p_vout->p_sys;
 302     IDirectFB *p_directfb = NULL;
 303     IDirectFBSurface *p_primary = NULL;
 304     DFBSurfaceDescription dsc;
 305
 306     /*dsc.flags = DSDESC_CAPS | DSDESC_HEIGHT | DSDESC_WIDTH;*/
 307     dsc.flags = DSDESC_CAPS;
 308     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_FLIPPING;
 309
 310     /*dsc.width = 352;*/
 311     /*dsc.height = 240;*/
 312     if( DirectFBCreate( &p_directfb ) != DFB_OK )
 313         return VLC_EGENERIC;
 314
 315     p_sys->p_directfb = p_directfb;
 316     if( !p_directfb )
 317         return VLC_EGENERIC;
 318
 319     if( p_directfb->CreateSurface( p_directfb, &dsc, &p_primary ) )
 320         return VLC_EGENERIC;
 321
 322     p_sys->p_primary = p_primary;
 323     if( !p_primary )
 324         return VLC_EGENERIC;
 325
 326     p_primary->GetSize( p_primary, &p_sys->i_width,
 327                         &p_sys->i_height );
 328     p_primary->GetPixelFormat( p_primary, &p_sys->p_pixel_format );
 329     p_primary->FillRectangle( p_primary, 0, 0, p_sys->i_width,
 330                               p_sys->i_height );
 331     p_primary->Flip( p_primary, NULL, 0 );
 332
 333     return VLC_SUCCESS;
 334 }
 335
 336 static void CloseDisplay( vout_thread_t *p_vout )
 337 {
 338     vout_sys_t *p_sys = p_vout->p_sys;
 339     IDirectFB *p_directfb = p_sys->p_directfb;
 340     IDirectFBSurface *p_primary = p_sys->p_primary;
 341
 342     if( p_primary )
 343         p_primary->Release( p_primary );
 344
 345     if( p_directfb )
 346         p_directfb->Release( p_directfb );
 347 }