modules/video_output/directfb.c

   1 /*****************************************************************************
   2  * directfb.c: DirectFB video output display method
   3  *****************************************************************************
   4  * Copyright © 2005-2009 VLC authors and VideoLAN
   5  *
   6  * Authors: Iuri Diniz <iuridiniz@gmail.com>
   7  *          Laurent Aimar <fenrir@videolan.org>
   8  *
   9  * This code is based in sdl.c and fb.c, thanks for VideoLAN team.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU Lesser General Public License as published by
  13  * the Free Software Foundation; either version 2.1 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19  * GNU Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public License
  22  * along with this program; if not, write to the Free Software Foundation,
  23  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /*****************************************************************************
  27  * Preamble
  28  *****************************************************************************/
  29 #ifdef HAVE_CONFIG_H
  30 # include "config.h"
  31 #endif
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_vout_display.h>
  36 #include <vlc_picture_pool.h>
  37
  38 #include <directfb.h>
  39
  40 /*****************************************************************************
  41  * Module descriptor
  42  *****************************************************************************/
  43 static int  Open (vlc_object_t *);
  44 static void Close(vlc_object_t *);
  45
  46 vlc_module_begin()
  47     set_shortname("DirectFB")
  48     set_category(CAT_VIDEO)
  49     set_subcategory(SUBCAT_VIDEO_VOUT)
  50     set_description(N_("DirectFB video output http://www.directfb.org/"))
  51     set_capability("vout display", 35)
  52     add_shortcut("directfb")
  53     set_callbacks(Open, Close)
  54 vlc_module_end()
  55
  56 /*****************************************************************************
  57  * Local prototypes
  58  *****************************************************************************/
  59 static picture_pool_t *Pool  (vout_display_t *, unsigned);
  60 static void           Display(vout_display_t *, picture_t *, subpicture_t *);
  61 static int            Control(vout_display_t *, int, va_list);
  62
  63 /* */
  64 struct vout_display_sys_t {
  65     IDirectFB        *directfb;
  66     IDirectFBSurface *primary;
  67
  68     picture_pool_t *pool;
  69     picture_t      *pics[3];
  70     int             idx;
  71 };
  72
  73 /* */
  74 static int Open(vlc_object_t *object)
  75 {
  76     vout_display_t *vd = (vout_display_t *)object;
  77     vout_display_sys_t *sys;
  78
  79     vd->sys = sys = calloc(1, sizeof(*sys));
  80     if (!sys)
  81         return VLC_ENOMEM;
  82
  83     if (DirectFBInit(NULL,NULL) != DFB_OK) {
  84         msg_Err(vd, "Cannot init DirectFB");
  85         free(sys);
  86         return VLC_EGENERIC;
  87     }
  88
  89     DFBSurfaceDescription dsc;
  90     dsc.flags = DSDESC_CAPS;
  91     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_TRIPLE;
  92 #if 0
  93     dsc.flags |= DSDESC_HEIGHT | DSDESC_WIDTH;
  94     dsc.width = 352;
  95     dsc.height = 240;
  96 #endif
  97
  98     IDirectFB *directfb = NULL;
  99     if (DirectFBCreate(&directfb) != DFB_OK || !directfb)
 100         goto error;
 101     sys->directfb = directfb;
 102
 103     IDirectFBSurface *primary = NULL;
 104     if (directfb->CreateSurface(directfb, &dsc, &primary) || !primary)
 105         goto error;
 106     sys->primary = primary;
 107
 108     /* */
 109     int width;
 110     int height;
 111
 112     primary->GetSize(primary, &width, &height);
 113
 114     vout_display_DeleteWindow(vd, NULL);
 115
 116     /* */
 117     video_format_t fmt;
 118     video_format_ApplyRotation(&fmt, &vd->fmt);
 119
 120     DFBSurfacePixelFormat pixel_format;
 121     sys->primary->GetPixelFormat(sys->primary, &pixel_format);
 122     switch (pixel_format) {
 123     case DSPF_RGB332:
 124         fmt.i_chroma = VLC_CODEC_RGB8;
 125         fmt.i_rmask = 0x7 << 5;
 126         fmt.i_gmask = 0x7 << 2;
 127         fmt.i_bmask = 0x3 << 0;
 128         break;
 129     case DSPF_RGB16: fmt.i_chroma = VLC_CODEC_RGB16; break;
 130     case DSPF_RGB24: fmt.i_chroma = VLC_CODEC_RGB24; break;
 131     case DSPF_RGB32: fmt.i_chroma = VLC_CODEC_RGB32; break;
 132     default:
 133         msg_Err(vd, "unknown screen depth %i", pixel_format);
 134         Close(VLC_OBJECT(vd));
 135         return VLC_EGENERIC;
 136     }
 137
 138     video_format_FixRgb(&fmt);
 139
 140     fmt.i_width  = width;
 141     fmt.i_height = height;
 142     fmt.i_visible_width  = width;
 143     fmt.i_visible_height = height;
 144
 145     /* */
 146     vout_display_info_t info = vd->info;
 147     info.has_hide_mouse = true;
 148
 149     /* */
 150     vd->fmt     = fmt;
 151     vd->info    = info;
 152     vd->pool    = Pool;
 153     vd->prepare = NULL;
 154     vd->display = Display;
 155     vd->control = Control;
 156     vd->manage  = NULL;
 157
 158     /* */
 159     vout_display_SendEventFullscreen(vd, true);
 160     vout_display_SendEventDisplaySize(vd, fmt.i_width, fmt.i_height, true);
 161     return VLC_SUCCESS;
 162
 163 error:
 164     msg_Err(vd, "Cannot create primary surface");
 165     Close(VLC_OBJECT(vd));
 166     return VLC_EGENERIC;
 167 }
 168
 169 static void Close(vlc_object_t *object)
 170 {
 171     vout_display_t *vd = (vout_display_t *)object;
 172     vout_display_sys_t *sys = vd->sys;
 173
 174     if (sys->pool)
 175         picture_pool_Delete(sys->pool);
 176
 177     IDirectFBSurface *primary = sys->primary;
 178     if (primary)
 179         primary->Release(primary);
 180
 181     IDirectFB *directfb = sys->directfb;
 182     if (directfb)
 183         directfb->Release(directfb);
 184
 185     free(sys);
 186 }
 187
 188 struct picture_sys_t {
 189     vout_display_sys_t *sys;
 190 };
 191
 192 static int Lock(picture_t *pic)
 193 {
 194     vout_display_sys_t *sys = pic->p_sys->sys;
 195     return sys->pics[sys->idx] == pic ? VLC_SUCCESS : VLC_EGENERIC;
 196 }
 197
 198 /* */
 199 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
 200 {
 201     VLC_UNUSED(count);
 202     vout_display_sys_t *sys = vd->sys;
 203     IDirectFBSurface *primary = sys->primary;
 204
 205     if (!sys->pool) {
 206         picture_resource_t rsc;
 207         memset(&rsc, 0, sizeof(rsc));
 208         rsc.p[0].i_lines  = vd->fmt.i_height;
 209
 210         for (int i = 0; i < 3; i++) {
 211             rsc.p_sys = malloc(sizeof(*rsc.p_sys));
 212             if (!rsc.p_sys)
 213                 goto cleanup;
 214             rsc.p_sys->sys = sys;
 215             void *pixels;
 216             int  pitch;
 217             if (primary->Lock(primary, DSLF_WRITE, &pixels, &pitch) != DFB_OK)
 218                 goto cleanup;
 219
 220             rsc.p[0].i_pitch = pitch;
 221             rsc.p[0].p_pixels = pixels;
 222             primary->Unlock(primary);
 223             primary->Flip(primary, NULL, 0);
 224
 225             sys->pics[i] = picture_NewFromResource(&vd->fmt, &rsc);
 226             if (!sys->pics[i]) {
 227                 free(rsc.p_sys);
 228                 goto cleanup;
 229             }
 230         }
 231
 232         picture_pool_configuration_t cfg = {
 233             .picture_count  = 3,
 234             .picture        = sys->pics,
 235             .lock           = Lock,
 236             .unlock         = NULL,
 237         };
 238
 239         sys->pool = picture_pool_NewExtended(&cfg);
 240     }
 241     return sys->pool;
 242
 243 cleanup:
 244     for (int i = 0; i < 2; i++) {
 245         if (sys->pics[i]) {
 246             free(sys->pics[i]->p_sys);
 247             picture_Release(sys->pics[i]);
 248         }
 249     }
 250
 251     return NULL;
 252 }
 253
 254 static void Display(vout_display_t *vd, picture_t *picture, subpicture_t *subpicture)
 255 {
 256     vout_display_sys_t *sys = vd->sys;
 257
 258     IDirectFBSurface *primary = sys->primary;
 259     primary->Flip(primary, NULL, 0);
 260     if (++sys->idx >= 3)
 261         sys->idx = 0;
 262     picture_Release(picture);
 263
 264     VLC_UNUSED(subpicture);
 265 }
 266
 267 static int Control(vout_display_t *vd, int query, va_list args)
 268 {
 269     switch (query) {
 270     case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE: {
 271         const vout_display_cfg_t *cfg = va_arg(args, const vout_display_cfg_t *);
 272         if (cfg->display.width  != vd->fmt.i_width ||
 273             cfg->display.height != vd->fmt.i_height)
 274             return VLC_EGENERIC;
 275         return VLC_SUCCESS;
 276     }
 277     default:
 278         msg_Err(vd, "Unsupported query in vout display directfb");
 279         return VLC_EGENERIC;
 280     }
 281 }