play.c

   1 /* Copyright (C) <2010> Douglas Bagnall <douglas@halo.gen.nz>
   2  *
   3  * This library is free software; you can redistribute it and/or
   4  * modify it under the terms of the GNU Library General Public
   5  * License as published by the Free Software Foundation; either
   6  * version 2 of the License, or (at your option) any later version.
   7  *
   8  * This library is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * Library General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU Library General Public
  14  * License along with this library; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 02111-1307, USA.
  17  */
  18
  19 #include "sparrow.h"
  20 #include "gstsparrow.h"
  21
  22 #include <string.h>
  23 #include <math.h>
  24
  25
  26 static void
  27 play_from_lut(GstSparrow *sparrow, guint8 *in, guint8 *out){
  28   sparrow_map_t *map = &sparrow->map;
  29   memset(out, 0, sparrow->out.size);
  30   int x, y;
  31   guint32 *line = (guint32 *)out;
  32   for (y = 0; y < sparrow->out.height; y++){
  33     sparrow_map_row_t *row = map->rows + y;
  34     line += sparrow->out.width;
  35     for(x = row->start; x < row->end; x++){
  36       line[x] = ~0;
  37     }
  38     //GST_DEBUG("row %d: s %d e%d", y, row->start, row->end);
  39   }
  40 }
  41
  42
  43 UNUSED
  44 static void
  45 simple_negation(guint8 * bytes, guint size){
  46   guint i;
  47   guint32 * data = (guint32 *)bytes;
  48   //could use sse for superspeed
  49   for (i = 0; i < size / 4; i++){
  50     data[i] = ~data[i];
  51   }
  52 }
  53
  54 UNUSED
  55 static void
  56 gamma_negation(GstSparrow *sparrow, guint8 *in, guint8 *out){
  57   //guint i;
  58   //XXX  could try oil_tablelookup_u8
  59   //for (i = 0; i < size; i++){
  60   //  out[i] = sparrow_rgb_gamma_full_range_REVERSE[in[i]];
  61   // }
  62 }
  63
  64 INVISIBLE sparrow_state
  65 mode_play(GstSparrow *sparrow, guint8 *in, guint8 *out){
  66   //do actual stuff here
  67   //memcpy(out, in, sparrow->out.size);
  68   //simple_negation(out, sparrow->out.size);
  69   play_from_lut(sparrow, in, out);
  70   return SPARROW_STATUS_QUO;
  71 }
  72
  73 INVISIBLE void init_play(GstSparrow *sparrow){}
  74 INVISIBLE void finalise_play(GstSparrow *sparrow){}