10f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. 20f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid * Use of this source code is governed by a BSD-style license that can be 30f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid * found in the LICENSE file. 40f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid */ 50f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 60f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <math.h> 70f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <stdio.h> 80f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <stdlib.h> 90f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <sys/types.h> 100f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <sys/stat.h> 110f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <fcntl.h> 120f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include <unistd.h> 130f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid#include "raw.h" 140f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 150f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid/* Compare the difference between two raw files */ 160f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 170f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reidstatic inline double max(double a, double b) 180f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid{ 190f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid return (a > b) ? a : b; 200f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid} 210f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 220f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reidint main(int argc, char **argv) 230f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid{ 240f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid size_t frame1, frame2; 250f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid float *data1, *data2; 260f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid size_t i, n, changed; 270f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid double diff = 0; 280f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid double maxdiff = 0; 290f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 300f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid if (argc != 3) { 310f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid fprintf(stderr, "usage: cmpraw 1.raw 2.raw\n"); 320f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid exit(1); 330f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid } 340f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 350f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid data1 = read_raw(argv[1], &frame1); 360f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid data2 = read_raw(argv[2], &frame2); 370f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 380f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid if (frame1 != frame2) { 390f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid fprintf(stderr, "mismatch size (%zu vs %zu)\n", frame1, frame2); 400f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid exit(1); 410f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid } 420f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 430f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid n = frame1 * 2; 440f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid changed = 0; 450f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid for (i = 0; i < n; i++) { 460f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid if (data1[i] != data2[i]) { 470f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid changed++; 480f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid diff += fabs(data1[i] - data2[i]); 490f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid maxdiff = max(fabs(data1[i] - data2[i]), maxdiff); 500f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid } 510f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid } 520f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid printf("avg diff = %g, max diff = %g, changed = %.3f%%\n", 530f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid diff / n, maxdiff * 32768, changed*100.0f/n); 540f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid 550f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid free(data1); 560f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid free(data2); 570f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid return 0; 580f0250476fcb27f45d4f9f98e5769951a5ea5712Dylan Reid} 59