1 /*
2 * Copyright (C) 2021 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 #include "EncoderDebug.h"
18
19 #include <string>
20 #include <fstream>
21 #include <streambuf>
22
23 #include <android/log.h>
24
25 namespace {
26
encoderShouldLog()27 bool encoderShouldLog() {
28 #if defined(ENABLE_ENCODER_DEBUG_LOGGING_FOR_ALL_APPS)
29 return true;
30 #elif defined(ENABLE_ENCODER_DEBUG_LOGGING_FOR_APP)
31 static const bool sEnabled = []() {
32 std::ifstream cmdlineStream("/proc/self/cmdline");
33 const std::string cmdline((std::istreambuf_iterator<char>(cmdlineStream)),
34 std::istreambuf_iterator<char>());
35
36 if (cmdline.find(ENABLE_ENCODER_DEBUG_LOGGING_FOR_APP) != std::string::npos) {
37 const std::string message = "Enabling gfxstream encoder logging for " + cmdline;
38 __android_log_write(ANDROID_LOG_DEBUG, "gfxstream", message.c_str());
39 return true;
40 } else {
41 const std::string message = "Not enabling gfxstream encoder logging for " + cmdline;
42 __android_log_write(ANDROID_LOG_DEBUG, "gfxstream", message.c_str());
43 return false;
44 }
45 }();
46 return sEnabled;
47 #else
48 return false;
49 #endif
50 }
51
52 } // namespace
53
encoderLog(const char * format,...)54 void encoderLog(const char* format, ...) {
55 #if defined(ENABLE_ENCODER_DEBUG_LOGGING_FOR_ALL_APPS) || \
56 defined(ENABLE_ENCODER_DEBUG_LOGGING_FOR_APP)
57 if (!encoderShouldLog()) {
58 return;
59 }
60
61 char buffer[2048];
62
63 va_list args;
64 va_start(args, format);
65 vsnprintf(buffer, 2048, format, args);
66 va_end(args);
67
68 __android_log_write(ANDROID_LOG_DEBUG, "gfxstream", buffer);
69 #else
70 (void)format;
71 #endif
72 }