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 PLUGIN_HEADER
  27
  28 static unsigned char output;
  29 static int output_y = 0;
  30 static int font_h;
  31 static unsigned char *plugin_buf;
  32 char output_buf[256];
  33 struct img_part part;
  34
  35 /* a null output plugin to save memory and better isolate scale cost */
  36 static unsigned int get_size_null(struct bitmap *bm)
  37 {
  38     (void) bm;
  39     return 1;
  40 }
  41
  42 static void output_row_null(uint32_t row, void * row_in,
  43                             struct scaler_context *ctx)
  44 {
  45     (void) row;
  46     uint32_t *in = (uint32_t *)row_in;
  47 #ifdef HAVE_LCD_COLOR
  48     uint32_t *lim = in + ctx->bm->width * 3;
  49 #else
  50     uint32_t *lim = in + ctx->bm->width;
  51 #endif
  52     while (in < lim)
  53         output = SC_OUT(*in++, ctx);
  54     return;
  55 }
  56
  57 struct img_part *store_part_null(void *args)
  58 {
  59     (void) args;
  60     part.len = 256;
  61     part.buf = (typeof(part.buf))plugin_buf;
  62     return &part;
  63 }
  64
  65 const struct custom_format format_null = {
  66     .output_row_8 = NULL,
  67 #ifdef HAVE_LCD_COLOR
  68     .output_row_32 = {
  69         output_row_null,
  70         output_row_null
  71     },
  72 #else
  73     .output_row_32 = output_row_null,
  74 #endif
  75     .get_size = get_size_null
  76 };
  77
  78 #define lcd_printf(...) \
  79 do { \
  80     rb->snprintf(output_buf, sizeof(output_buf), __VA_ARGS__); \
  81     rb->lcd_putsxy(0, output_y, output_buf); \
  82     rb->lcd_update_rect(0, output_y, LCD_WIDTH, font_h); \
  83     output_y += font_h; \
  84 } while (0)
  85
  86 /* this is the plugin entry point */
  87 enum plugin_status plugin_start(const void* parameter)
  88 {
  89     size_t plugin_buf_len;
  90     plugin_buf = (unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
  91     struct bitmap bm;
  92     struct dim in_dim;
  93     struct rowset rset = {
  94         .rowstep = 1,
  95         .rowstart = 0,
  96     };
  97     (void)parameter;
  98
  99     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
 100     rb->lcd_fillrect(0, 0, LCD_WIDTH, LCD_HEIGHT);
 101     rb->lcd_set_drawmode(DRMODE_SOLID);
 102     rb->lcd_getstringsize("A", NULL, &font_h);
 103     bm.data = plugin_buf;
 104     int in, out;
 105     for (in = 64; in < 1025; in <<= 2)
 106     {
 107         for (out = 64; out < 257; out <<= 1)
 108         {
 109             if (in == out)
 110                 continue;
 111             lcd_printf("timing %dx%d->%dx>%d scale", in, in, out, out);
 112             long t1, t2, t_end;
 113             int count = 0;
 114             t2 = *(rb->current_tick);
 115             in_dim.width = in_dim.height = in;
 116             bm.width = bm.height = rset.rowstop = out;
 117             while (t2 != (t1 = *(rb->current_tick)));
 118             t_end = t1 + 10 * HZ;
 119             do {
 120                 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);
 121                 count++;
 122                 t2 = *(rb->current_tick);
 123             } while (TIME_BEFORE(t2, t_end) || count < 10);
 124             t2 -= t1;
 125             t2 *= 10;
 126             t2 += count >> 1;
 127             t2 /= count;
 128             t1 = t2 / 1000;
 129             t2 -= t1 * 1000;
 130             lcd_printf("%01d.%03d secs/scale", (int)t1, (int)t2);
 131             if (!(bm.width && bm.height))
 132                 break;
 133         }
 134     }
 135
 136     while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
 137     return PLUGIN_OK;
 138 }