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 #include "BenchmarkCommon.h"
43 using namespace android;
44
ReadMediaSamples(benchmark::State & state,const std::string & srcFileName,bool readAudio,bool sequentialAccess=false)45 static void ReadMediaSamples(benchmark::State& state, const std::string& srcFileName,
46 bool readAudio, bool sequentialAccess = false) {
47 int srcFd = 0;
48 std::string srcPath = kAssetDirectory + srcFileName;
49
50 if ((srcFd = open(srcPath.c_str(), O_RDONLY)) < 0) {
51 state.SkipWithError("Unable to open source file: " + srcPath);
52 return;
53 }
54
55 const size_t fileSize = lseek(srcFd, 0, SEEK_END);
56 lseek(srcFd, 0, SEEK_SET);
57
58 for (auto _ : state) {
59 auto sampleReader = MediaSampleReaderNDK::createFromFd(srcFd, 0, fileSize);
60 if (sampleReader->setEnforceSequentialAccess(sequentialAccess) != AMEDIA_OK) {
61 state.SkipWithError("setEnforceSequentialAccess failed");
62 return;
63 }
64
65 // Select tracks.
66 std::vector<int> trackIndices;
67 for (int trackIndex = 0; trackIndex < sampleReader->getTrackCount(); ++trackIndex) {
68 const char* mime = nullptr;
69
70 AMediaFormat* trackFormat = sampleReader->getTrackFormat(trackIndex);
71 AMediaFormat_getString(trackFormat, AMEDIAFORMAT_KEY_MIME, &mime);
72
73 if (strncmp(mime, "video/", 6) == 0) {
74 int32_t frameCount;
75 if (AMediaFormat_getInt32(trackFormat, AMEDIAFORMAT_KEY_FRAME_COUNT, &frameCount)) {
76 state.counters["VideoFrameRate"] =
77 benchmark::Counter(frameCount, benchmark::Counter::kIsRate);
78 }
79 } else if (!readAudio && strncmp(mime, "audio/", 6) == 0) {
80 continue;
81 }
82
83 trackIndices.push_back(trackIndex);
84 sampleReader->selectTrack(trackIndex);
85 }
86
87 // Start threads.
88 std::vector<std::thread> trackThreads;
89 for (auto trackIndex : trackIndices) {
90 trackThreads.emplace_back([trackIndex, sampleReader, &state] {
91 LOG(INFO) << "Track " << trackIndex << " started";
92 MediaSampleInfo info;
93
94 size_t bufferSize = 0;
95 std::unique_ptr<uint8_t[]> buffer;
96
97 while (true) {
98 media_status_t status = sampleReader->getSampleInfoForTrack(trackIndex, &info);
99 if (status == AMEDIA_ERROR_END_OF_STREAM) {
100 break;
101 }
102
103 if (info.size > bufferSize) {
104 bufferSize = info.size;
105 buffer.reset(new uint8_t[bufferSize]);
106 }
107
108 status = sampleReader->readSampleDataForTrack(trackIndex, buffer.get(),
109 bufferSize);
110 if (status != AMEDIA_OK) {
111 state.SkipWithError("Error reading sample data");
112 break;
113 }
114 }
115
116 LOG(INFO) << "Track " << trackIndex << " finished";
117 });
118 }
119
120 // Join threads.
121 for (auto& thread : trackThreads) {
122 thread.join();
123 }
124 }
125
126 close(srcFd);
127 }
128
129 // Benchmark registration wrapper for transcoding.
130 #define TRANSCODER_BENCHMARK(func) \
131 BENCHMARK(func)->UseRealTime()->MeasureProcessCPUTime()->Unit(benchmark::kMillisecond)
132
BM_MediaSampleReader_AudioVideo_Parallel(benchmark::State & state)133 static void BM_MediaSampleReader_AudioVideo_Parallel(benchmark::State& state) {
134 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
135 true /* readAudio */);
136 }
137
BM_MediaSampleReader_AudioVideo_Sequential(benchmark::State & state)138 static void BM_MediaSampleReader_AudioVideo_Sequential(benchmark::State& state) {
139 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
140 true /* readAudio */, true /* sequentialAccess */);
141 }
142
BM_MediaSampleReader_Video(benchmark::State & state)143 static void BM_MediaSampleReader_Video(benchmark::State& state) {
144 ReadMediaSamples(state, "video_1920x1080_3648frame_h264_22Mbps_30fps_aac.mp4",
145 false /* readAudio */);
146 }
147
148 TRANSCODER_BENCHMARK(BM_MediaSampleReader_AudioVideo_Parallel);
149 TRANSCODER_BENCHMARK(BM_MediaSampleReader_AudioVideo_Sequential);
150 TRANSCODER_BENCHMARK(BM_MediaSampleReader_Video);
151
152 BENCHMARK_MAIN();
153