Martin McDonough FlyingJester
FlyingJester
/ ADTSUtils.cpp
Created
June 24, 2014 18:40
Excerpt from ADTS Utils, showing a unique combination of C++11, XPCOM, and raw bit-twiddling.
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| nsresult MediaCodecADTSHeader::SetFrequency(unsigned aFrequency) | |
| { | |
| mFrequencyIndex = std::distance(sValidFrequencies.begin(), | |
| std::find(sValidFrequencies.begin(), | |
| sValidFrequencies.end(), | |
| aFrequency)); | |
| uint64_t fr = mFrequencyIndex | 0x0F; |
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| #include <cstdio> | |
| #include <sys/mman.h> | |
| #include <sys/types.h> | |
| #include <cstring> | |
| int main(int argc, const char * argv[]) | |
| { | |
| // What we want to execute. in amd64, 0x90 is a no-op and 0xC3 is ret. |
FlyingJester
/ codegen.cpp
Created
June 25, 2014 06:14
Example of using run-time modified machine code to add two numbers.
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| #include <cstdio> | |
| #include <sys/mman.h> | |
| #include <sys/types.h> | |
| #include <cstring> | |
| #include <cctype> | |
| #include <cstdlib> | |
| int main(int argc, const char * argv[]) | |
| { |
FlyingJester
/ CodeGen3.cpp
Last active
August 29, 2015 14:02
You can also modify actual instructions as well as data.
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| #include <cstdio> | |
| #include <sys/mman.h> | |
| #include <sys/types.h> | |
| #include <cstring> | |
| #include <cctype> | |
| #include <cstdlib> | |
| int main(int argc, const char * argv[]) | |
| { |
FlyingJester
/ gist:91bb4ad3a5be0b908723
Created
June 30, 2014 18:40
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| rootfs / rootfs ro,relatime 0 0 | |
| tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0 | |
| devpts /dev/pts devpts rw,seclabel,relatime,mode=600 0 0 | |
| proc /proc proc rw,relatime 0 0 | |
| sysfs /sys sysfs rw,seclabel,relatime 0 0 | |
| selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0 | |
| debugfs /sys/kernel/debug debugfs rw,relatime 0 0 | |
| none /acct cgroup rw,relatime,cpuacct 0 0 | |
| none /sys/fs/cgroup tmpfs rw,seclabel,relatime,mode=750,gid=1000 0 0 | |
| tmpfs /mnt/asec tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0 |
FlyingJester
/ gist:c62c11b041bdbc8d7700
Created
June 30, 2014 18:40
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| Filesystem Size Used Free Blksize | |
| /dev 927.5M 128.0K 927.4M 4096 | |
| /sys/fs/cgroup 927.5M 12.0K 927.5M 4096 | |
| /mnt/asec 927.5M 0.0K 927.5M 4096 | |
| /mnt/obb 927.5M 0.0K 927.5M 4096 | |
| /system 1009.3M 704.9M 304.4M 4096 | |
| /data 12.6G 1.0G 11.5G 4096 | |
| /cache 689.8M 12.6M 677.2M 4096 | |
| /persist 15.8M 4.2M 11.6M 4096 | |
| /firmware 64.0M 44.3M 19.6M 16384 |
FlyingJester
/ gist:a3a0e914b9e422942686
Created
June 30, 2014 21:45
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| 0x4010d644 in ?? () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libc.so | |
| (gdb) bt | |
| #0 0x4010d644 in ?? () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libc.so | |
| #1 0x7a386ce4 in PR_Lock (lock=0x5a5a5a5a) at /Users/mozilla/ff/gd3/gecko-dev/nsprpub/pr/src/pthreads/ptsynch.c:177 | |
| #2 0x7ccc6cd2 in MonitorAutoLock (aMonitor=..., this=0x82288b80) at ../../dist/include/mozilla/Monitor.h:92 | |
| #3 mozilla::MediaTaskQueue::Dispatch (this=0x895c5ec0, aRunnable=...) at /Users/mozilla/ff/gd3/gecko-dev/content/media/MediaTaskQueue.cpp:32 | |
| #4 0x7ccf9288 in mozilla::MCVideoDataDecoder::Input (this=0x894d36c0, aSample=<optimized out>) at /Users/mozilla/ff/gd3/gecko-dev/content/media/fmp4/androidmc/AndroidDecoderModule.cpp:132 | |
| #5 0x7ccf722a in mozilla::MP4Reader::Decode (this=this@entry=0x890c6380, aTrack=aTrack@entry=mp4_demuxer::kVideo) at /Users/mozilla/ff/gd3/gecko-dev/content/media/fmp4/MP4Reader.cpp:371 | |
| #6 0x7ccf756e in mozilla::MP4Reader::DecodeVideoFrame (this=0x890c6380, aKeyfram |
FlyingJester
/ gist:6a260d598f6302a30f26
Created
June 30, 2014 23:55
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| 0:27.12 [dx] Merged dex A (116 defs/326.6KiB) with dex B (14 defs/26.6KiB). Result is 130 defs/503.2KiB. Took 0.0s | |
| 0:27.22 [dx] Merged dex A (130 defs/503.2KiB) with dex B (489 defs/455.2KiB). Result is 619 defs/1335.5KiB. Took 0.1s | |
| 0:27.32 [dx] Result compacted from 2075.9KiB to 694.3KiB to save 1381.6KiB | |
| 0:27.32 [dx] Merged dex A (619 defs/1335.5KiB) with dex B (45 defs/42.5KiB). Result is 664 defs/694.3KiB. Took 0.1s | |
| 0:27.47 [dx] Merged dex A (664 defs/694.3KiB) with dex B (2078 defs/2220.4KiB). Result is 2742 defs/3489.2KiB. Took 0.1s | |
| 0:27.47 | |
| 0:27.47 -crunch: | |
| 0:27.48 [crunch] Crunching PNG Files in source dir: /Users/mozilla/ff/gd3/gecko-dev/obj-arm-linux-androideabi/embedding/android/geckoview_example/res | |
| 0:27.48 [crunch] To destination dir: /Users/mozilla/ff/gd3/gecko-dev/obj-arm-linux-androideabi/embedding/android/geckoview_example/bin/res | |
| 0:27.48 [crunch] Crunched 0 PNG files to update cache |
FlyingJester
/ gist:115c0c7b72cca7425729
Created
July 2, 2014 23:21
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| (gdb) bt | |
| #0 0x40078f28 in __pthread_cond_timedwait () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libc.so | |
| #1 0x40b1c7e2 in android::ALooperRoster::postAndAwaitResponse(android::sp<android::AMessage> const&, android::sp<android::AMessage>*) () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libstagefright_foundation.so | |
| #2 0x40b1d3ba in android::AMessage::postAndAwaitResponse(android::sp<android::AMessage>*) () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libstagefright_foundation.so | |
| #3 0x71cd88fa in android::MediaCodec::PostAndAwaitResponse(android::sp<android::AMessage> const&, android::sp<android::AMessage>*) () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libstagefright.so | |
| #4 0x71cd9100 in android::MediaCodec::dequeueOutputBuffer(unsigned int*, unsigned int*, unsigned int*, long long*, unsigned int*, long long) () from /Users/mozilla/ff/jimdb-arm/lib/0738781d009994e0/system/lib/libstagefright.so | |
| #5 0x71c4ca5e in android::JMe |
FlyingJester
/ concurrent_queue.h
Created
July 7, 2014 00:54
A cross platform concurrent queue header, including a simple implementation using Unix pipes when no existing implementation is present
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| #pragma once | |
| #ifdef _MSC_VER | |
| #include <concurrent_queue.h> | |
| using concurrency::concurrent_queue; | |
| #else | |
| #ifdef USE_INTEL_TBB | |
| #include <tbb/concurrent_queue.h> | |
| using tbb::concurrent_queue; |