vidix/vidixlib.c

   1 /*
   2  * VIDIX - VIDeo Interface for *niX.
   3  * Copyright (C) 2002 Nick Kurshev
   4  * Copyright (C) 2007 Benjamin Zores <ben@geexbox.org>
   5  *
   6  * This file is part of MPlayer.
   7  *
   8  * MPlayer is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * MPlayer is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with MPlayer; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  *
  22  * This interface is introduced as universal one to MPEG decoder,
  23  * Back End Scaler (BES) and YUV2RGB hw accelerators.
  24  *
  25  * In the future it may be expanded up to capturing and audio things.
  26  * Main goal of this this interface imlpementation is providing DGA
  27  * everywhere where it's possible (unlike X11 and other).
  28  *
  29  * This interface is based on v4l2, fbvid.h, mga_vid.h projects
  30  * and personally my ideas.
  31  *
  32  * NOTE: This interface is introduces as driver interface.
  33  */
  34
  35 #include <stdlib.h>
  36 #include <stdio.h>
  37 #include <errno.h>
  38 #include <string.h>
  39
  40 #include "config.h"
  41 #include "vidixlib.h"
  42 #include "drivers.h"
  43 #include "libavutil/common.h"
  44 #include "mpbswap.h"
  45
  46 extern unsigned int  vdlGetVersion( void )
  47 {
  48    return VIDIX_VERSION;
  49 }
  50
  51 VDL_HANDLE vdlOpen(const char *path,const char *name,unsigned cap,int verbose)
  52 {
  53   VDXContext *ctx;
  54
  55   if (!(ctx = malloc (sizeof (VDXContext))))
  56     return NULL;
  57   memset (ctx, 0, sizeof (VDXContext));
  58
  59   /* register all drivers */
  60   vidix_register_all_drivers ();
  61
  62   if (!vidix_find_driver (ctx, name, cap, verbose))
  63   {
  64     free (ctx);
  65     return NULL;
  66   }
  67
  68   if (verbose)
  69     printf ("vidixlib: will use %s driver\n", ctx->drv->name);
  70
  71   if (!ctx->drv || !ctx->drv->init)
  72   {
  73     if (verbose)
  74       printf ("vidixlib: Can't init driver\n");
  75     free (ctx);
  76     return NULL;
  77   }
  78
  79   if (verbose)
  80     printf ("vidixlib: Attempt to initialize driver at: %p\n",
  81             ctx->drv->init);
  82
  83   if (ctx->drv->init () !=0)
  84   {
  85     if (verbose)
  86       printf ("vidixlib: Can't init driver\n");
  87     free (ctx);
  88     return NULL;
  89   }
  90
  91   if (verbose)
  92     printf("vidixlib: '%s'successfully loaded\n", ctx->drv->name);
  93
  94   return ctx;
  95 }
  96
  97 void vdlClose(VDL_HANDLE ctx)
  98 {
  99   if (ctx->drv->destroy)
 100     ctx->drv->destroy ();
 101
 102   memset (ctx, 0, sizeof (VDXContext)); /* <- it's not stupid */
 103   free (ctx);
 104 }
 105
 106 int  vdlGetCapability(VDL_HANDLE ctx, vidix_capability_t *cap)
 107 {
 108   return ctx->drv->get_caps (cap);
 109 }
 110
 111 #define MPLAYER_IMGFMT_RGB (('R'<<24)|('G'<<16)|('B'<<8))
 112 #define MPLAYER_IMGFMT_BGR (('B'<<24)|('G'<<16)|('R'<<8))
 113 #define MPLAYER_IMGFMT_RGB_MASK 0xFFFFFF00
 114
 115 static uint32_t normalize_fourcc(uint32_t fourcc)
 116 {
 117   if((fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_RGB|0) ||
 118      (fourcc & MPLAYER_IMGFMT_RGB_MASK) == (MPLAYER_IMGFMT_BGR|0))
 119         return bswap_32(fourcc);
 120   else  return fourcc;
 121 }
 122
 123 int  vdlQueryFourcc(VDL_HANDLE ctx,vidix_fourcc_t *f)
 124 {
 125   f->fourcc = normalize_fourcc(f->fourcc);
 126   return ctx->drv->query_fourcc (f);
 127 }
 128
 129 int  vdlConfigPlayback(VDL_HANDLE ctx,vidix_playback_t *p)
 130 {
 131   p->fourcc = normalize_fourcc(p->fourcc);
 132   return ctx->drv->config_playback (p);
 133 }
 134
 135 int  vdlPlaybackOn(VDL_HANDLE ctx)
 136 {
 137   return ctx->drv->playback_on ();
 138 }
 139
 140 int  vdlPlaybackOff(VDL_HANDLE ctx)
 141 {
 142   return ctx->drv->playback_off ();
 143 }
 144
 145 int  vdlPlaybackFrameSelect(VDL_HANDLE ctx, unsigned frame_idx )
 146 {
 147   return ctx->drv->frame_sel ? ctx->drv->frame_sel (frame_idx) : ENOSYS;
 148 }
 149
 150 int  vdlPlaybackGetEq(VDL_HANDLE ctx, vidix_video_eq_t * e)
 151 {
 152   return ctx->drv->get_eq ? ctx->drv->get_eq (e) : ENOSYS;
 153 }
 154
 155 int  vdlPlaybackSetEq(VDL_HANDLE ctx, const vidix_video_eq_t * e)
 156 {
 157   return ctx->drv->set_eq ? ctx->drv->set_eq (e) : ENOSYS;
 158 }
 159
 160 int  vdlPlaybackCopyFrame(VDL_HANDLE ctx, const vidix_dma_t * f)
 161 {
 162   return ctx->drv->copy_frame ? ctx->drv->copy_frame (f) : ENOSYS;
 163 }
 164
 165 int       vdlGetGrKeys(VDL_HANDLE ctx, vidix_grkey_t * k)
 166 {
 167   return ctx->drv->get_gkey ? ctx->drv->get_gkey (k) : ENOSYS;
 168 }
 169
 170 int       vdlSetGrKeys(VDL_HANDLE ctx, const vidix_grkey_t * k)
 171 {
 172   return ctx->drv->set_gkey ? ctx->drv->set_gkey (k) : ENOSYS;
 173 }
 174
 175 int       vdlPlaybackGetDeint(VDL_HANDLE ctx, vidix_deinterlace_t * d)
 176 {
 177   return ctx->drv->get_deint ? ctx->drv->get_deint (d) : ENOSYS;
 178 }
 179
 180 int       vdlPlaybackSetDeint(VDL_HANDLE ctx, const vidix_deinterlace_t * d)
 181 {
 182   return ctx->drv->set_deint ? ctx->drv->set_deint (d) : ENOSYS;
 183 }
 184
 185 int       vdlQueryNumOemEffects(VDL_HANDLE ctx, unsigned * number )
 186 {
 187   return ctx->drv->get_num_fx ? ctx->drv->get_num_fx (number) : ENOSYS;
 188 }
 189
 190 int       vdlGetOemEffect(VDL_HANDLE ctx, vidix_oem_fx_t * f)
 191 {
 192   return ctx->drv->get_fx ? ctx->drv->get_fx (f) : ENOSYS;
 193 }
 194
 195 int       vdlSetOemEffect(VDL_HANDLE ctx, const vidix_oem_fx_t * f)
 196 {
 197   return ctx->drv->set_fx ? ctx->drv->set_fx (f) : ENOSYS;
 198 }