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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* this small program is used to measure the performance of libjpeg decompression
* algorithm...
*/
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/time.h>
#include "jpeglib.h"
#include <setjmp.h>
#ifdef HAVE_ANDROID_OS
#include <hardware/qemu_tracing.h>
#endif
#define USE_STDIO
#define CHUNK 32768
typedef struct {
struct jpeg_source_mgr jpeg_mgr;
char* base;
char* cursor;
char* end;
} SourceMgrRec, *SourceMgr;
static void
_source_init_source(j_decompress_ptr cinfo)
{
SourceMgr src = (SourceMgr) cinfo->src;
src->jpeg_mgr.next_input_byte = (unsigned char*)src->base,
src->jpeg_mgr.bytes_in_buffer = src->end - src->base;
}
static int
_source_fill_input_buffer(j_decompress_ptr cinfo)
{
SourceMgr src = (SourceMgr) cinfo->src;
cinfo->err->error_exit((j_common_ptr)cinfo);
return FALSE;
}
static void
_source_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
{
SourceMgr src = (SourceMgr) cinfo->src;
if (src->jpeg_mgr.next_input_byte + num_bytes > (unsigned char*)src->end ) {
cinfo->err->error_exit((j_common_ptr)cinfo);
}
src->jpeg_mgr.next_input_byte += num_bytes;
src->jpeg_mgr.bytes_in_buffer -= num_bytes;
}
static int
_source_resync_to_restart( j_decompress_ptr cinfo, int desired)
{
SourceMgr src = (SourceMgr) cinfo->src;
src->jpeg_mgr.next_input_byte = (unsigned char*)src->base;
src->jpeg_mgr.bytes_in_buffer = src->end - src->base;
return TRUE;
}
static void
_source_term_source(j_decompress_ptr cinfo)
{
// nothing to do
}
static void
_source_init( SourceMgr src, char* base, long size )
{
src->base = base;
src->cursor = base;
src->end = base + size;
src->jpeg_mgr.init_source = _source_init_source;
src->jpeg_mgr.fill_input_buffer = _source_fill_input_buffer;
src->jpeg_mgr.skip_input_data = _source_skip_input_data;
src->jpeg_mgr.resync_to_restart = _source_resync_to_restart;
src->jpeg_mgr.term_source = _source_term_source;
}
typedef struct {
struct jpeg_error_mgr jpeg_mgr;
jmp_buf jumper;
int volatile error;
} ErrorMgrRec, *ErrorMgr;
static void _error_exit(j_common_ptr cinfo)
{
ErrorMgr error = (ErrorMgr) cinfo->err;
(*error->jpeg_mgr.output_message) (cinfo);
/* Let the memory manager delete any temp files before we die */
longjmp(error->jumper, -1);
}
#ifdef USE_STDIO
int decompress(FILE* input_file, int dct_method, int disable_rgb)
#else
int decompress(char* data, long fsize)
#endif
{
ErrorMgrRec errmgr;
SourceMgrRec sourcemgr;
struct jpeg_decompress_struct cinfo;
int volatile error = 0;
jmp_buf jumper;
int isRGB;
char* pixels;
JSAMPLE* temprow;
memset( &cinfo, 0, sizeof(cinfo) );
memset( &errmgr, 0, sizeof(errmgr) );
jpeg_create_decompress(&cinfo);
cinfo.err = jpeg_std_error(&errmgr.jpeg_mgr);
#if 0
errmgr.jpeg_mgr.error_exit = _error_exit;
errmgr.error = 0;
#endif
if (setjmp(errmgr.jumper) != 0) {
fprintf(stderr, "returning error from jpeglib ---\n" );
goto Exit;
}
#ifdef USE_STDIO
/* Specify data source for decompression */
jpeg_stdio_src(&cinfo, input_file);
#else
_source_init( &sourcemgr, data, fsize );
cinfo.src = &sourcemgr.jpeg_mgr;
#endif
jpeg_read_header(&cinfo, 1);
if (3 == cinfo.num_components && JCS_RGB == cinfo.out_color_space)
isRGB = 1;
else if (1 == cinfo.num_components && JCS_GRAYSCALE == cinfo.out_color_space)
isRGB = 0; // could use Index8 config if we want...
else {
fprintf( stderr, "unsupported jpeg colorspace %d with %d components\n",
cinfo.jpeg_color_space, cinfo.num_components );
goto Exit;
}
cinfo.dct_method = dct_method;
if (disable_rgb)
cinfo.out_color_space = JCS_YCbCr;
jpeg_start_decompress(&cinfo);
temprow = calloc( cinfo.num_components * cinfo.output_width, sizeof(JSAMPLE) );
{
unsigned y;
for (y = 0; y < cinfo.output_height; y++) {
JSAMPLE* rowptr = temprow;
(void)jpeg_read_scanlines(&cinfo, &rowptr, 1);
}
}
jpeg_finish_decompress(&cinfo);
free( temprow );
Exit:
jpeg_destroy_decompress(&cinfo);
return error;
}
#define DEFAULT_REPEAT 10
static void usage(void)
{
fprintf(stderr, "usage: test_jpeg [options] filename.jpg [filename2.jpg ...]\n" );
fprintf(stderr, "options: -r NN repeat count (default %d)\n", DEFAULT_REPEAT );
fprintf(stderr, " -d N idct method (0=default, 1=fastest, 2=slow, 3=float)\n" );
fprintf(stderr, " -C no RGB color conversion (YCbCr instead)\n" );
exit(1);
}
static double
get_time_usec( void )
{
#ifdef HAVE_ANDROID_OS
struct timespec ts;
if ( clock_gettime( CLOCK_MONOTONIC, &ts ) < 0 )
fprintf(stderr, "clock_gettime: %s\n", strerror(errno) );
return ts.tv_sec*1e6 + ts.tv_nsec*1e-3;
#else
struct timeval tv;
if (gettimeofday( &tv, NULL ) < 0)
fprintf(stderr, "gettimeofday: %s\n", strerror(errno) );
return tv.tv_sec*1000000. + tv.tv_usec*1.0;
#endif
}
int main( int argc, char** argv )
{
FILE* f;
int repeat_count = DEFAULT_REPEAT;
int dct_method = JDCT_DEFAULT;
int disable_rgb = 0;
double usec0, usec1;
if (argc < 2)
usage();
for ( ; argc > 1 && argv[1][0] == '-'; argc--, argv++) {
const char* arg = &argv[1][1];
switch (arg[0]) {
case 'r':
if (arg[1] == 0) {
if (argc < 3)
usage();
arg = argv[2];
argc--;
argv++;
} else
arg += 1;
repeat_count = strtol(arg, NULL, 10);
if (repeat_count <= 0)
repeat_count = 1;
break;
case 'C':
disable_rgb = 1;
break;
case 'd':
if (arg[1] == 0) {
if (argc < 3)
usage();
arg = argv[2];
argc--;
argv++;
} else
arg += 1;
dct_method = strtol(arg, NULL, 10);
switch (dct_method) {
case 0:
dct_method = JDCT_DEFAULT;
break;
case 1:
dct_method = JDCT_IFAST;
break;
case 2:
dct_method = JDCT_ISLOW;
break;
case 3:
dct_method = JDCT_FLOAT;
break;
default:
usage();
}
break;
default:
usage();
}
}
for ( ; argc > 1; argc--, argv++ )
{
long fsize;
char* data;
FILE* f = fopen( argv[1], "rb" );
int rr;
if (f == NULL) {
fprintf(stderr, "could not open '%s': %s\n", argv[1], strerror(errno) );
continue;
}
fseek( f, 0, SEEK_END );
fsize = ftell(f);
fseek( f, 0, SEEK_SET );
usec0 = get_time_usec();
#ifdef HAVE_ANDROID_OS
qemu_start_tracing();
#endif
#ifdef USE_STDIO
for ( rr = repeat_count; rr > 0; rr-- ) {
fseek( f, 0, SEEK_SET );
decompress(f, dct_method, disable_rgb);
}
fclose( f );
#else
data = malloc( fsize );
if (data == NULL) {
if (fsize > 0)
fprintf(stderr, "could not allocate %ld bytes to load '%s'\n", fsize, argv[1] );
fclose(f);
continue;
}
fread( data, 1, fsize, f );
fclose(f);
usec1 = get_time_usec() - usec0;
printf( "compressed load: %10.2f ms (%ld bytes)\n", usec1*1e-3, fsize );
usec0 = get_time_usec();
for ( rr = repeat_count; rr > 0; rr -- )
{
decompress( data, fsize );
}
free( data );
#endif
#ifdef HAVE_ANDROID_OS
qemu_stop_tracing();
#endif
usec1 = get_time_usec() - usec0;
printf( "decompression took: %10.3f ms (%.2f KB/s, %d passes)\n", usec1/1e3, fsize*(1e6/1024)*repeat_count/usec1, repeat_count );
}
return 0;
}
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