apps/plugins/bench_mem_jpeg.c

   1 /*****************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _// __ \_/ ___\|  |/ /| __ \ / __ \  \/  /
   5  *   Jukebox    |    |   ( (__) )  \___|    ( | \_\ ( (__) )    (
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Andrew Mahone
  11  *
  12  * In-memory JPEG decode 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 /* a null output plugin to save memory and better isolate decode cost */
  29 static unsigned int get_size_null(struct bitmap *bm)
  30 {
  31     (void) bm;
  32     return 1;
  33 }
  34
  35 static void output_row_null(uint32_t row, void * row_in,
  36                             struct scaler_context *ctx)
  37 {
  38     (void) row;
  39     (void) row_in;
  40     (void) ctx;
  41     return;
  42 }
  43
  44 const struct custom_format format_null = {
  45     .output_row_8 = output_row_null,
  46 #ifdef HAVE_LCD_COLOR
  47     .output_row_32 = {
  48         output_row_null,
  49         output_row_null
  50     },
  51 #else
  52     .output_row_32 = output_row_null,
  53 #endif
  54     .get_size = get_size_null
  55 };
  56
  57 static char output_buf[256];
  58 static int output_y = 0;
  59 static int font_h;
  60
  61 #define lcd_printf(...) \
  62 do { \
  63     rb->snprintf(output_buf, sizeof(output_buf), __VA_ARGS__); \
  64     rb->lcd_putsxy(0, output_y, output_buf); \
  65     rb->lcd_update_rect(0, output_y, LCD_WIDTH, font_h); \
  66     output_y += font_h; \
  67 } while (0)
  68
  69 /* this is the plugin entry point */
  70 enum plugin_status plugin_start(const void* parameter)
  71 {
  72     size_t plugin_buf_len;
  73     unsigned char * plugin_buf =
  74         (unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
  75     static char filename[MAX_PATH];
  76     struct bitmap bm = {
  77         .width = LCD_WIDTH,
  78         .height = LCD_HEIGHT,
  79     };
  80     int ret;
  81
  82     if(!parameter) return PLUGIN_ERROR;
  83
  84     rb->strcpy(filename, parameter);
  85     rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
  86     rb->lcd_fillrect(0, 0, LCD_WIDTH, LCD_HEIGHT);
  87     rb->lcd_set_drawmode(DRMODE_SOLID);
  88     rb->lcd_getstringsize("A", NULL, &font_h);
  89     int fd = rb->open(filename, O_RDONLY);
  90     if (fd < 0)
  91     {
  92         lcd_printf("file open failed: %d", fd);
  93         goto wait;
  94     }
  95     unsigned long filesize = rb->filesize(fd);
  96     if (filesize > plugin_buf_len)
  97     {
  98         lcd_printf("file too large");
  99         goto wait;
 100     }
 101     plugin_buf_len -= filesize;
 102     unsigned char *jpeg_buf = plugin_buf;
 103     plugin_buf += filesize;
 104     rb->read(fd, jpeg_buf, filesize);
 105     rb->close(fd);
 106     bm.data = plugin_buf;
 107     struct dim jpeg_size;
 108     get_jpeg_dim_mem(jpeg_buf, filesize, &jpeg_size);
 109     lcd_printf("jpeg file size: %dx%d",jpeg_size.width, jpeg_size.height);
 110     bm.width = jpeg_size.width;
 111     bm.height = jpeg_size.height;
 112     char *size_str[] = { "1/1", "1/2", "1/4", "1/8" };
 113     int i;
 114     for (i = 0; i < 4; i++)
 115     {
 116         lcd_printf("timing %s decode", size_str[i]);
 117         ret = decode_jpeg_mem(jpeg_buf, filesize, &bm, plugin_buf_len,
 118                             FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
 119                             &format_null);
 120         if (ret == 1)
 121         {
 122             long t1, t2, t_end;
 123             int count = 0;
 124             t2 = *(rb->current_tick);
 125             while (t2 != (t1 = *(rb->current_tick)));
 126             t_end = t1 + 10 * HZ;
 127             do {
 128                 decode_jpeg_mem(jpeg_buf, filesize, &bm, plugin_buf_len,
 129                                 FORMAT_NATIVE|FORMAT_RESIZE|FORMAT_KEEP_ASPECT,
 130                                 &format_null);
 131                 count++;
 132                 t2 = *(rb->current_tick);
 133             } while (TIME_BEFORE(t2, t_end) || count < 10);
 134             t2 -= t1;
 135             t2 *= 10;
 136             t2 += count >> 1;
 137             t2 /= count;
 138             t1 = t2 / 1000;
 139             t2 -= t1 * 1000;
 140             lcd_printf("%01d.%03d secs/decode", (int)t1, (int)t2);
 141             bm.width >>= 1;
 142             bm.height >>= 1;
 143             if (!(bm.width && bm.height))
 144                 break;
 145         } else
 146             lcd_printf("insufficient memory");
 147     }
 148
 149 wait:
 150     while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
 151     return PLUGIN_OK;
 152 }