hvirtual/quicktime/libavcodec/armv4l/mpegvideo_arm.c

   1 /*
   2  * Copyright (c) 2002 Michael Niedermayer
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20 #include "../dsputil.h"
  21 #include "../mpegvideo.h"
  22 #include "../avcodec.h"
  23
  24 extern void j_rev_dct_ARM(DCTELEM *data);
  25 /* XXX: local hack */
  26 static void (*ff_put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
  27 static void (*ff_add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
  28
  29 /* XXX: those functions should be suppressed ASAP when all IDCTs are
  30    converted */
  31 static void arm_idct_put(UINT8 *dest, int line_size, DCTELEM *block)
  32 {
  33     j_rev_dct_ARM (block);
  34     ff_put_pixels_clamped(block, dest, line_size);
  35 }
  36 static void arm_idct_add(UINT8 *dest, int line_size, DCTELEM *block)
  37 {
  38     j_rev_dct_ARM (block);
  39     ff_add_pixels_clamped(block, dest, line_size);
  40 }
  41
  42 void MPV_common_init_armv4l(MpegEncContext *s)
  43 {
  44     int i;
  45     const int idct_algo= s->avctx->idct_algo;
  46
  47     ff_put_pixels_clamped = s->dsp.put_pixels_clamped;
  48     ff_add_pixels_clamped = s->dsp.add_pixels_clamped;
  49
  50     if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_ARM){
  51         s->idct_put= arm_idct_put;
  52         s->idct_add= arm_idct_add;
  53         s->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;/* FF_NO_IDCT_PERM */
  54     }
  55 }