jpeg_decoder_bench.cpp revision 987dbde838014e5f0c55a63acdd2a9a002b140cc 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "OmxJpegDecoder"
18#include <sys/time.h>
19#include <utils/Log.h>
20
21#include <binder/ProcessState.h>
22
23#include "SkBitmap.h"
24#include "SkImageDecoder.h"
25#include "SkStream.h"
26#include "omx_jpeg_decoder.h"
27
28class SkJPEGImageDecoder : public SkImageDecoder {
29public:
30    virtual Format getFormat() const {
31        return kJPEG_Format;
32    }
33
34protected:
35    virtual bool onDecode(SkStream* stream, SkBitmap* bm,
36                          SkBitmap::Config pref, Mode);
37};
38
39int nullObjectReturn(const char msg[]) {
40    if (msg) {
41        SkDebugf("--- %s\n", msg);
42    }
43    return -1;
44}
45
46static int64_t getNowUs() {
47    struct timeval tv;
48    gettimeofday(&tv, NULL);
49
50    return tv.tv_usec + (int64_t) tv.tv_sec * 1000000;
51}
52
53int testDecodeBounds(SkImageDecoder* decoder, SkStream* stream,
54        SkBitmap* bitmap) {
55    int64_t startTime = getNowUs();
56    SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config;
57    SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodeBounds_Mode;
58
59    // Decode the input stream and then use the bitmap.
60    if (!decoder->decode(stream, bitmap, prefConfig, decodeMode)) {
61        return nullObjectReturn("decoder->decode returned false");
62    } else {
63        int64_t delay = getNowUs() - startTime;
64        printf("WidthxHeight: %dx%d\n", bitmap->width(), bitmap->height());
65        printf("Decoding Time in BoundsMode %.1f msec.\n", delay / 1000.0f);
66        return 0;
67    }
68}
69
70int testDecodePixels(SkImageDecoder* decoder, SkStream* stream,
71        SkBitmap* bitmap) {
72    int64_t startTime = getNowUs();
73    SkBitmap::Config prefConfig = SkBitmap::kARGB_8888_Config;
74    SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodePixels_Mode;
75
76    // Decode the input stream and then use the bitmap.
77    if (!decoder->decode(stream, bitmap, prefConfig, decodeMode)) {
78        return nullObjectReturn("decoder->decode returned false");
79    } else {
80        int64_t delay = getNowUs() - startTime;
81        printf("Decoding Time in PixelsMode %.1f msec.\n", delay / 1000.0f);
82        const char* filename = "/sdcard/omxJpegDecodedBitmap.rgba";
83        return storeBitmapToFile(bitmap, filename);
84    }
85}
86
87int testDecoder(SkImageDecoder* decoder, char* filename) {
88    // test DecodeMode == Pixels
89    SkStream* stream = new SkFILEStream(filename);
90    SkBitmap* bitmap = new SkBitmap;
91    testDecodePixels(decoder, stream, bitmap);
92    delete bitmap;
93
94    // test DecodeMode == Bounds
95    stream = new SkFILEStream(filename);
96    bitmap = new SkBitmap;
97    testDecodeBounds(decoder, stream, bitmap);
98    delete bitmap;
99
100    delete decoder;
101    return 0;
102}
103
104int main(int argc, char** argv) {
105    android::ProcessState::self()->startThreadPool();
106
107    printf("Decoding jpeg with libjpeg...\n");
108    SkJPEGImageDecoder* libjpeg = new SkJPEGImageDecoder;
109    testDecoder(libjpeg, argv[1]);
110
111    printf("\nDecoding jpeg with OMX...\n");
112    OmxJpegImageDecoder* omx = new OmxJpegImageDecoder;
113    testDecoder(omx, argv[1]);
114    return 0;
115}
116