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     if (vout_display_IsWindowed(vd))
  80         return VLC_EGENERIC;
  81
  82     vd->sys = sys = calloc(1, sizeof(*sys));
  83     if (!sys)
  84         return VLC_ENOMEM;
  85
  86     if (DirectFBInit(NULL,NULL) != DFB_OK) {
  87         msg_Err(vd, "Cannot init DirectFB");
  88         free(sys);
  89         return VLC_EGENERIC;
  90     }
  91
  92     DFBSurfaceDescription dsc;
  93     dsc.flags = DSDESC_CAPS;
  94     dsc.caps  = DSCAPS_PRIMARY | DSCAPS_TRIPLE;
  95 #if 0
  96     dsc.flags |= DSDESC_HEIGHT | DSDESC_WIDTH;
  97     dsc.width = 352;
  98     dsc.height = 240;
  99 #endif
 100
 101     IDirectFB *directfb = NULL;
 102     if (DirectFBCreate(&directfb) != DFB_OK || !directfb)
 103         goto error;
 104     sys->directfb = directfb;
 105
 106     IDirectFBSurface *primary = NULL;
 107     if (directfb->CreateSurface(directfb, &dsc, &primary) || !primary)
 108         goto error;
 109     sys->primary = primary;
 110
 111     /* */
 112     int width;
 113     int height;
 114
 115     primary->GetSize(primary, &width, &height);
 116
 117     /* */
 118     video_format_t fmt;
 119     video_format_ApplyRotation(&fmt, &vd->fmt);
 120
 121     DFBSurfacePixelFormat pixel_format;
 122     sys->primary->GetPixelFormat(sys->primary, &pixel_format);
 123     switch (pixel_format) {
 124     case DSPF_RGB332:
 125         fmt.i_chroma = VLC_CODEC_RGB8;
 126         fmt.i_rmask = 0x7 << 5;
 127         fmt.i_gmask = 0x7 << 2;
 128         fmt.i_bmask = 0x3 << 0;
 129         break;
 130     case DSPF_RGB16: fmt.i_chroma = VLC_CODEC_RGB16; break;
 131     case DSPF_RGB24: fmt.i_chroma = VLC_CODEC_RGB24; break;
 132     case DSPF_RGB32: fmt.i_chroma = VLC_CODEC_RGB32; break;
 133     default:
 134         msg_Err(vd, "unknown screen depth %i", pixel_format);
 135         Close(VLC_OBJECT(vd));
 136         return VLC_EGENERIC;
 137     }
 138
 139     video_format_FixRgb(&fmt);
 140
 141     fmt.i_width  = width;
 142     fmt.i_height = height;
 143     fmt.i_visible_width  = width;
 144     fmt.i_visible_height = height;
 145
 146     /* */
 147     vout_display_info_t info = vd->info;
 148     info.has_hide_mouse = true;
 149
 150     /* */
 151     vd->fmt     = fmt;
 152     vd->info    = info;
 153     vd->pool    = Pool;
 154     vd->prepare = NULL;
 155     vd->display = Display;
 156     vd->control = Control;
 157     vd->manage  = NULL;
 158
 159     /* */
 160     vout_display_SendEventFullscreen(vd, true);
 161     vout_display_SendEventDisplaySize(vd, fmt.i_width, fmt.i_height);
 162     return VLC_SUCCESS;
 163
 164 error:
 165     msg_Err(vd, "Cannot create primary surface");
 166     Close(VLC_OBJECT(vd));
 167     return VLC_EGENERIC;
 168 }
 169
 170 static void Close(vlc_object_t *object)
 171 {
 172     vout_display_t *vd = (vout_display_t *)object;
 173     vout_display_sys_t *sys = vd->sys;
 174
 175     if (sys->pool)
 176         picture_pool_Release(sys->pool);
 177
 178     IDirectFBSurface *primary = sys->primary;
 179     if (primary)
 180         primary->Release(primary);
 181
 182     IDirectFB *directfb = sys->directfb;
 183     if (directfb)
 184         directfb->Release(directfb);
 185
 186     free(sys);
 187 }
 188
 189 struct picture_sys_t {
 190     vout_display_sys_t *sys;
 191 };
 192
 193 static int Lock(picture_t *pic)
 194 {
 195     vout_display_sys_t *sys = pic->p_sys->sys;
 196     return sys->pics[sys->idx] == pic ? VLC_SUCCESS : VLC_EGENERIC;
 197 }
 198
 199 /* */
 200 static picture_pool_t *Pool(vout_display_t *vd, unsigned count)
 201 {
 202     VLC_UNUSED(count);
 203     vout_display_sys_t *sys = vd->sys;
 204     IDirectFBSurface *primary = sys->primary;
 205
 206     if (!sys->pool) {
 207         picture_resource_t rsc;
 208         memset(&rsc, 0, sizeof(rsc));
 209         rsc.p[0].i_lines  = vd->fmt.i_height;
 210
 211         for (int i = 0; i < 3; i++) {
 212             rsc.p_sys = malloc(sizeof(*rsc.p_sys));
 213             if (!rsc.p_sys)
 214                 goto cleanup;
 215             rsc.p_sys->sys = sys;
 216             void *pixels;
 217             int  pitch;
 218             if (primary->Lock(primary, DSLF_WRITE, &pixels, &pitch) != DFB_OK)
 219                 goto cleanup;
 220
 221             rsc.p[0].i_pitch = pitch;
 222             rsc.p[0].p_pixels = pixels;
 223             primary->Unlock(primary);
 224             primary->Flip(primary, NULL, 0);
 225
 226             sys->pics[i] = picture_NewFromResource(&vd->fmt, &rsc);
 227             if (!sys->pics[i]) {
 228                 free(rsc.p_sys);
 229                 goto cleanup;
 230             }
 231         }
 232
 233         picture_pool_configuration_t cfg = {
 234             .picture_count  = 3,
 235             .picture        = sys->pics,
 236             .lock           = Lock,
 237             .unlock         = NULL,
 238         };
 239
 240         sys->pool = picture_pool_NewExtended(&cfg);
 241     }
 242     return sys->pool;
 243
 244 cleanup:
 245     for (int i = 0; i < 2; i++) {
 246         if (sys->pics[i]) {
 247             free(sys->pics[i]->p_sys);
 248             picture_Release(sys->pics[i]);
 249         }
 250     }
 251
 252     return NULL;
 253 }
 254
 255 static void Display(vout_display_t *vd, picture_t *picture, subpicture_t *subpicture)
 256 {
 257     vout_display_sys_t *sys = vd->sys;
 258
 259     IDirectFBSurface *primary = sys->primary;
 260     primary->Flip(primary, NULL, 0);
 261     if (++sys->idx >= 3)
 262         sys->idx = 0;
 263     picture_Release(picture);
 264
 265     VLC_UNUSED(subpicture);
 266 }
 267
 268 static int Control(vout_display_t *vd, int query, va_list args)
 269 {
 270     (void) vd; (void) query; (void) args;
 271     return VLC_EGENERIC;
 272 }