1/*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7#include "Benchmark.h"
8#include "SkCanvas.h"
9#include "SkPathUtils.h"
10#include "SkRandom.h"
11#include "SkString.h"
12#include "SkTime.h"
13
14#define H 16
15#define W 16
16#define STRIDE 2
17
18//this function is redefined for sample, test, and bench. is there anywhere
19// I can put it to avoid code duplcation?
20static void fillRandomBits( int chars, char* bits ){
21    SkRandom rand(SkTime::GetMSecs());
22
23    for (int i = 0; i < chars; ++i){
24        bits[i] = rand.nextU();
25    }
26}
27
28static void path_proc(char* bits, SkPath* path) {
29    SkPathUtils::BitsToPath_Path(path, bits, H, W, STRIDE);
30}
31
32static void region_proc(char* bits, SkPath* path) {
33    SkPathUtils::BitsToPath_Region(path, bits, H, W, STRIDE);
34}
35
36/// Emulates the mix of rects blitted by gmail during scrolling
37class PathUtilsBench : public Benchmark {
38    typedef void (*Proc)(char*, SkPath*);
39
40    Proc fProc;
41    SkString fName;
42    char* bits[H * STRIDE];
43
44public:
45    PathUtilsBench(Proc proc, const char name[])  {
46        fProc = proc;
47        fName.printf("pathUtils_%s", name);
48
49
50    }
51
52protected:
53    virtual const char* onGetName() { return fName.c_str(); }
54
55    virtual void onDraw(const int loops, SkCanvas* canvas) {
56
57        for (int i = 0; i < loops; ++i){
58            //create a random 16x16 bitmap
59            fillRandomBits(H * STRIDE, (char*) &bits);
60
61            //use passed function pointer to handle it
62            SkPath path;
63            fProc( (char*) &bits, &path);
64        }
65    }
66
67private:
68    typedef Benchmark INHERITED;
69};
70
71DEF_BENCH( return SkNEW_ARGS(PathUtilsBench, (path_proc, "path")); )
72DEF_BENCH( return SkNEW_ARGS(PathUtilsBench, (region_proc, "region")); )
73