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Add a simple benchmark plugin for the scaler, using the pluginlib import of resize_on_load.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20969 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andrew Mahone 2009-05-16 20:12:39 +00:00
parent b68707d465
commit e20548f93e
1 changed files with 137 additions and 0 deletions
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apps/plugins/bench_scaler.c Normal file
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/*****************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// __ \_/ ___\| |/ /| __ \ / __ \ \/ /
* Jukebox | | ( (__) ) \___| ( | \_\ ( (__) ) (
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2009 Andrew Mahone
*
* scaler benchmark
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "lib/jpeg_mem.h"
PLUGIN_HEADER
static unsigned char output;
static int output_y = 0;
static int font_h;
static unsigned char *plugin_buf;
char output_buf[256];
struct img_part part;
/* a null output plugin to save memory and better isolate scale cost */
static unsigned int get_size_null(struct bitmap *bm)
{
(void) bm;
return 1;
}
static void output_row_null(uint32_t row, void * row_in,
struct scaler_context *ctx)
{
(void) row;
uint32_t *in = (uint32_t *)row_in;
#ifdef HAVE_LCD_COLOR
uint32_t *lim = in + ctx->bm->width * 3;
#else
uint32_t *lim = in + ctx->bm->width;
#endif
for (; in < lim; in++)
output = SC_MUL(*in + ctx->round, ctx->divisor);
return;
}
struct img_part *store_part_null(void *args)
{
(void) args;
part.len = 256;
part.buf = (typeof(part.buf))plugin_buf;
return &part;
}
const struct custom_format format_null = {
.output_row_8 = NULL,
#ifdef HAVE_LCD_COLOR
.output_row_32 = {
output_row_null,
output_row_null
},
#else
.output_row_32 = output_row_null,
#endif
.get_size = get_size_null
};
#define lcd_printf(...) \
do { \
rb->snprintf(output_buf, sizeof(output_buf), __VA_ARGS__); \
rb->lcd_putsxy(0, output_y, output_buf); \
rb->lcd_update_rect(0, output_y, LCD_WIDTH, font_h); \
output_y += font_h; \
} while (0)
/* this is the plugin entry point */
enum plugin_status plugin_start(const void* parameter)
{
size_t plugin_buf_len;
plugin_buf = (unsigned char *)rb->plugin_get_buffer(&plugin_buf_len);
struct bitmap bm;
struct dim in_dim;
struct rowset rset = {
.rowstep = 1,
.rowstart = 0,
};
(void)parameter;
rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
rb->lcd_fillrect(0, 0, LCD_WIDTH, LCD_HEIGHT);
rb->lcd_set_drawmode(DRMODE_SOLID);
rb->lcd_getstringsize("A", NULL, &font_h);
bm.data = plugin_buf;
int in, out;
for (in = 64; in < 1025; in <<= 2)
{
for (out = 64; out < 257; out <<= 1)
{
if (in == out)
continue;
lcd_printf("timing %dx%d->%dx>%d scale", in, in, out, out);
long t1, t2;
int count = 0;
t2 = *(rb->current_tick);
in_dim.width = in_dim.height = in;
bm.width = bm.height = rset.rowstop = out;
while (t2 != (t1 = *(rb->current_tick)));
do {
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);
count++;
t2 = *(rb->current_tick);
} while (t2 - t1 < HZ || count < 10);
t2 -= t1;
t2 *= 10;
t2 += count >> 1;
t2 /= count;
t1 = t2 / 1000;
t2 -= t1 * 1000;
lcd_printf("%01d.%03d secs/scale", (int)t1, (int)t2);
if (!(bm.width && bm.height))
break;
}
}
while (rb->get_action(CONTEXT_STD,1) != ACTION_STD_OK) rb->yield();
return PLUGIN_OK;
}