vidix/vidix.c

   1 /*
   2  * VIDIX - VIDeo Interface for *niX.
   3  *
   4  * This interface is introduced as universal one to MPEG decoder,
   5  * Back End Scaler (BES) and YUV2RGB hw accelerators.
   6  *
   7  * In the future it may be expanded up to capturing and audio things.
   8  * Main goal of this this interface imlpementation is providing DGA
   9  * everywhere where it's possible (unlike X11 and other).
  10  *
  11  * This interface is based on v4l2, fbvid.h, mga_vid.h projects
  12  * and personally my ideas.
  13  *
  14  * NOTE: This interface is introduced as driver interface.
  15  *
  16  * Copyright (C) 2002 Nick Kurshev
  17  * Copyright (C) 2007 Benjamin Zores <ben@geexbox.org>
  18  *
  19  * This file is part of MPlayer.
  20  *
  21  * MPlayer is free software; you can redistribute it and/or modify
  22  * it under the terms of the GNU General Public License as published by
  23  * the Free Software Foundation; either version 2 of the License, or
  24  * (at your option) any later version.
  25  *
  26  * MPlayer is distributed in the hope that it will be useful,
  27  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  28  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29  * GNU General Public License for more details.
  30  *
  31  * You should have received a copy of the GNU General Public License along
  32  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  33  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  34  */
  35
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38 #include <errno.h>
  39 #include <string.h>
  40
  41 #include "config.h"
  42 #include "vidix.h"
  43 #include "drivers.h"
  44 #include "libavutil/common.h"
  45 #include "mpbswap.h"
  46
  47 VDXContext *vdlOpen(const char *name,unsigned cap,int verbose)
  48 {
  49   VDXContext *ctx;
  50
  51   if (!(ctx = malloc (sizeof (VDXContext))))
  52     return NULL;
  53   memset (ctx, 0, sizeof (VDXContext));
  54
  55   /* register all drivers */
  56   vidix_register_all_drivers ();
  57
  58   if (!vidix_find_driver (ctx, name, cap, verbose))
  59   {
  60     free (ctx);
  61     return NULL;
  62   }
  63
  64   if (verbose)
  65     printf ("vidixlib: will use %s driver\n", ctx->drv->name);
  66
  67   if (!ctx->drv || !ctx->drv->init)
  68   {
  69     if (verbose)
  70       printf ("vidixlib: Can't init driver\n");
  71     free (ctx);
  72     return NULL;
  73   }
  74
  75   if (verbose)
  76     printf ("vidixlib: Attempt to initialize driver at: %p\n",
  77             ctx->drv->init);
  78
  79   if (ctx->drv->init () !=0)
  80   {
  81     if (verbose)
  82       printf ("vidixlib: Can't init driver\n");
  83     free (ctx);
  84     return NULL;
  85   }
  86
  87   if (verbose)
  88     printf("vidixlib: '%s'successfully loaded\n", ctx->drv->name);
  89
  90   return ctx;
  91 }
  92
  93 void vdlClose(VDXContext *ctx)
  94 {
  95   if (ctx->drv->destroy)
  96     ctx->drv->destroy ();
  97
  98   memset (ctx, 0, sizeof (VDXContext)); /* <- it's not stupid */
  99   free (ctx);
 100 }
 101
 102 int  vdlGetCapability(VDXContext *ctx, vidix_capability_t *cap)
 103 {
 104   return ctx->drv->get_caps (cap);
 105 }
 106
 107 #define MPLAYER_IMGFMT_RGB (('R'<<24)|('G'<<16)|('B'<<8))
 108 #define MPLAYER_IMGFMT_BGR (('B'<<24)|('G'<<16)|('R'<<8))
 109 #define MPLAYER_IMGFMT_RGB_MASK 0xFFFFFF00
 110
 111 static uint32_t normalize_fourcc (uint32_t fourcc)
 112 {
 113   if((fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_RGB|0) ||
 114      (fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_BGR|0))
 115         return bswap_32(fourcc);
 116   return fourcc;
 117 }
 118
 119 int vdlQueryFourcc (VDXContext *ctx, vidix_fourcc_t *f)
 120 {
 121   f->fourcc = normalize_fourcc(f->fourcc);
 122   return ctx->drv->query_fourcc (f);
 123 }
 124
 125 int vdlConfigPlayback (VDXContext *ctx, vidix_playback_t *p)
 126 {
 127   p->fourcc = normalize_fourcc(p->fourcc);
 128   return ctx->drv->config_playback (p);
 129 }
 130
 131 int vdlPlaybackOn (VDXContext *ctx)
 132 {
 133   return ctx->drv->playback_on ();
 134 }
 135
 136 int vdlPlaybackOff (VDXContext *ctx)
 137 {
 138   return ctx->drv->playback_off ();
 139 }
 140
 141 int vdlPlaybackFrameSelect (VDXContext *ctx, unsigned frame_idx)
 142 {
 143   return ctx->drv->frame_sel ? ctx->drv->frame_sel (frame_idx) : ENOSYS;
 144 }
 145
 146 int vdlPlaybackGetEq (VDXContext *ctx, vidix_video_eq_t *e)
 147 {
 148   return ctx->drv->get_eq ? ctx->drv->get_eq (e) : ENOSYS;
 149 }
 150
 151 int vdlPlaybackSetEq (VDXContext *ctx, const vidix_video_eq_t *e)
 152 {
 153   return ctx->drv->set_eq ? ctx->drv->set_eq (e) : ENOSYS;
 154 }
 155
 156 int vdlGetGrKeys (VDXContext *ctx, vidix_grkey_t *k)
 157 {
 158   return ctx->drv->get_gkey ? ctx->drv->get_gkey (k) : ENOSYS;
 159 }
 160
 161 int vdlSetGrKeys (VDXContext *ctx, const vidix_grkey_t *k)
 162 {
 163   return ctx->drv->set_gkey ? ctx->drv->set_gkey (k) : ENOSYS;
 164 }
 165
 166 int vdlPlaybackGetDeint (VDXContext *ctx, vidix_deinterlace_t *d)
 167 {
 168   return ctx->drv->get_deint ? ctx->drv->get_deint (d) : ENOSYS;
 169 }
 170
 171 int vdlPlaybackSetDeint (VDXContext *ctx, const vidix_deinterlace_t *d)
 172 {
 173   return ctx->drv->set_deint ? ctx->drv->set_deint (d) : ENOSYS;
 174 }