apps/plugins/bench_scaler.c

   1 /*****************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _// __ \_/ ___\|  |/ /| __ \ / __ \  \/  /
   5  *   Jukebox    |    |   ( (__) )  \___|    ( | \_\ ( (__) )    (
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Andrew Mahone
  11  *
  12  * scaler benchmark
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20  * KIND, either express or implied.
  21  *
  22  ****************************************************************************/
  23
  24 #include "plugin.h"
  25 #include "lib/jpeg_mem.h"
  26
  27
  28 static unsigned char output;
  29 static int output_y = 0;
  30 static int font_h;
  31 static unsigned char *plugin_buf;
  32 struct img_part part;
  33
  34 /* a null output plugin to save memory and better isolate scale cost */
  35 static unsigned int get_size_null(struct bitmap *bm)
  36 {
  37     (void) bm;
  38     return 1;
  39 }
  40
  41 static void output_row_null(uint32_t row, void * row_in,
  42                             struct scaler_context *ctx)
  43 {
  44     (void) row;
  45     uint32_t *in = (uint32_t *)row_in;
  46 #ifdef HAVE_LCD_COLOR
  47     uint32_t *lim = in + ctx->bm->width * 3;
  48 #else
  49     uint32_t *lim = in + ctx->bm->width;
  50 #endif
  51     while (in < lim)
  52         output = SC_OUT(*in++, ctx);
  53     return;
  54 }
  55
  56 struct img_part *store_part_null(void *args)
  57 {
  58     (void) args;
  59     part.len = 256;
  60     part.buf = (typeof(part.buf))plugin_buf;
  61     return &part;
  62 }
  63
  64 const struct custom_format format_null = {
  65     .output_row_8 = NULL,
  66 #ifdef HAVE_LCD_COLOR
  67     .output_row_32 = {
  68         output_row_null,
  69         output_row_null
  70     },
  71 #else
  72     .output_row_32 = output_row_null,
  73 #endif
  74     .get_size = get_size_null
  75 };
  76
  77 #define lcd_printf(...) \
  78 do { \
  79     rb->lcd_putsxyf(0, output_y, __VA_ARGS__); \
  80     rb->lcd_update_rect(0, output_y, LCD_WIDTH, font_h); \
  81     output_y += font_h; \
  82 } while (0)
  83
  84 /* this is the plugin entry point */
  85 enum plugin_status plugin_start(const void* parameter)
  86 {
  87     size_t plugin_buf_len;
  88     plugin_buf = (unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
  89     struct bitmap bm;
  90     struct dim in_dim;
  91     struct rowset rset = {
  92         .rowstep = 1,
  93         .rowstart = 0,
  94     };
  95     (void)parameter;
  96
  97     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
  98     rb->lcd_fillrect(0, 0, LCD_WIDTH, LCD_HEIGHT);
  99     rb->lcd_set_drawmode(DRMODE_SOLID);
 100     rb->lcd_getstringsize("A", NULL, &font_h);
 101     bm.data = plugin_buf;
 102     int in, out;
 103     for (in = 64; in < 1025; in <<= 2)
 104     {
 105         for (out = 64; out < 257; out <<= 1)
 106         {
 107             if (in == out)
 108                 continue;
 109             lcd_printf("timing %dx%d->%dx>%d scale", in, in, out, out);
 110             long t1, t2, t_end;
 111             int count = 0;
 112             t2 = *(rb->current_tick);
 113             in_dim.width = in_dim.height = in;
 114             bm.width = bm.height = rset.rowstop = out;
 115             while (t2 != (t1 = *(rb->current_tick)));
 116             t_end = t1 + 10 * HZ;
 117             do {
 118                 resize_on_load(&bm, false, &in_dim, &rset, (unsigned char *)plugin_buf, plugin_buf_len, &format_null, IF_PIX_FMT(0,) store_part_null, NULL);
 119                 count++;
 120                 t2 = *(rb->current_tick);
 121             } while (TIME_BEFORE(t2, t_end) || count < 10);
 122             t2 -= t1;
 123             t2 *= 10;
 124             t2 += count >> 1;
 125             t2 /= count;
 126             t1 = t2 / 1000;
 127             t2 -= t1 * 1000;
 128             lcd_printf("%01d.%03d secs/scale", (int)t1, (int)t2);
 129             if (!(bm.width && bm.height))
 130                 break;
 131         }
 132     }
 133
 134     while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
 135     return PLUGIN_OK;
 136 }