1 /*
2 * Copyright (C) 2020 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 /**
18 * MediaSampleReader benchmark tests.
19 *
20 * How to run the benchmark:
21 *
22 * 1. Download the media assets from http://go/transcodingbenchmark and push the directory
23 * ("TranscodingBenchmark") to /data/local/tmp.
24 *
25 * 2. Compile the benchmark and sync to device:
26 * $ mm -j72 && adb sync
27 *
28 * 3. Run:
29 * $ adb shell /data/nativetest64/MediaSampleReaderBenchmark/MediaSampleReaderBenchmark
30 */
31
32 #define LOG_TAG "MediaSampleReaderBenchmark"
33
34 #include <android-base/logging.h>
35 #include <benchmark/benchmark.h>
36 #include <fcntl.h>
37 #include <media/MediaSampleReaderNDK.h>
38 #include <unistd.h>
39
40 #include <thread>
41
42 using namespace android;
43
ReadMediaSamples(benchmark::State & state,const std::string & srcFileName,bool readAudio,bool sequentialAccess=false)44 static void ReadMediaSamples(benchmark::State& state, const std::string& srcFileName,
45 bool readAudio, bool sequentialAccess = false) {
46 // Asset directory.
47 static const std::string kAssetDirectory = "/data/local/tmp/TranscodingBenchmark/";
48
49 int srcFd = 0;
50 std::string srcPath = kAssetDirectory + srcFileName;
51
52 if ((srcFd = open(srcPath.c_str(), O_RDONLY)) < 0) {
53 state.SkipWithError("Unable to open source file");
54 return;
55 }
56
57 const size_t fileSize = lseek(srcFd, 0, SEEK_END);
58 lseek(srcFd, 0, SEEK_SET);
59
60 for (auto _ : state) {
61 auto sampleReader = MediaSampleReaderNDK::createFromFd(srcFd, 0, fileSize);
62 if (sampleReader->setEnforceSequentialAccess(sequentialAccess) != AMEDIA_OK) {
63 state.SkipWithError("setEnforceSequentialAccess failed");
64 return;
65 }
66
67 // Select tracks.
68 std::vector<int> trackIndices;
69 for (int trackIndex = 0; trackIndex < sampleReader->getTrackCount(); ++trackIndex) {
70 const char* mime = nullptr;
71
72 AMediaFormat* trackFormat = sampleReader->getTrackFormat(trackIndex);
73 AMediaFormat_getString(trackFormat, AMEDIAFORMAT_KEY_MIME, &mime);
74
75 if (strncmp(mime, "video/", 6) == 0) {
76 int32_t frameCount;
77 if (AMediaFormat_getInt32(trackFormat, AMEDIAFORMAT_KEY_FRAME_COUNT, &frameCount)) {
78 state.counters["VideoFrameRate"] =
79 benchmark::Counter(frameCount, benchmark::Counter::kIsRate);
80 }
81 } else if (!readAudio && strncmp(mime, "audio/", 6) == 0) {
82 continue;
83 }
84
85 trackIndices.push_back(trackIndex);
86 sampleReader->selectTrack(trackIndex);
87 }
88
89 // Start threads.
90 std::vector<std::thread> trackThreads;
91 for (auto trackIndex : trackIndices) {
92 trackThreads.emplace_back([trackIndex, sampleReader, &state] {
93 LOG(INFO) << "Track " << trackIndex << " started";
94 MediaSampleInfo info;
95
96 size_t bufferSize = 0;
97 std::unique_ptr<uint8_t[]> buffer;
98
99 while (true) {
100 media_status_t status = sampleReader->getSampleInfoForTrack(trackIndex, &info);
101 if (status == AMEDIA_ERROR_END_OF_STREAM) {
102 break;
103 }
104
105 if (info.size > bufferSize) {
106 bufferSize = info.size;
107 buffer.reset(new uint8_t[bufferSize]);
108 }
109
110 status = sampleReader->readSampleDataForTrack(trackIndex, buffer.get(),
111 bufferSize);
112 if (status != AMEDIA_OK) {
113 state.SkipWithError("Error reading sample data");
114 break;
115 }
116 }
117
118 LOG(INFO) << "Track " << trackIndex << " finished";
119 });
120 }
121
122 // Join threads.
123 for (auto& thread : trackThreads) {
124 thread.join();
125 }
126 }
127
128 close(srcFd);
129 }
130
131 // Benchmark registration wrapper for transcoding.
132 #define TRANSCODER_BENCHMARK(func) \
133 BENCHMARK(func)->UseRealTime()->MeasureProcessCPUTime()->Unit(benchmark::kMillisecond)
134
BM_MediaSampleReader_AudioVideo_Parallel(benchmark::State & state)135 static void BM_MediaSampleReader_AudioVideo_Parallel(benchmark::State& state) {
136 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
137 true /* readAudio */);
138 }
139
BM_MediaSampleReader_AudioVideo_Sequential(benchmark::State & state)140 static void BM_MediaSampleReader_AudioVideo_Sequential(benchmark::State& state) {
141 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
142 true /* readAudio */, true /* sequentialAccess */);
143 }
144
BM_MediaSampleReader_Video(benchmark::State & state)145 static void BM_MediaSampleReader_Video(benchmark::State& state) {
146 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
147 false /* readAudio */);
148 }
149
150 TRANSCODER_BENCHMARK(BM_MediaSampleReader_AudioVideo_Parallel);
151 TRANSCODER_BENCHMARK(BM_MediaSampleReader_AudioVideo_Sequential);
152 TRANSCODER_BENCHMARK(BM_MediaSampleReader_Video);
153
154 BENCHMARK_MAIN();
155