nareix

#include <stdio.h>
#include <stdint.h>
#include <string.h>

// 本质上是一个“环状”俄罗斯方块，以及每一层只有一个中心是实心的方块
// 状态共 80bit: 15bit + 60bit + 5bit
// 15bit: 积木有没有被使用 
// 60bit: 对应位置有没有填满，为 12*5 点阵
// 5bit: 内层有没有被填满
// 状态转移: 找到最左下角的空位，尝试放置下一块积木

nareix

VideoSendStream
  VideoSendStreamImpl::VideoSendStreamImpl
    video_stream_encoder_->SetSink register VideoSendStreamImpl::OnEncodedImage callback (output)
  VideoSendStream::SetSource
    video_stream_encoder_->SetSource(source, degradation_preference); 
    register rtc::VideoSourceInterface<VideoFrame>* source (input)
    
VideoStreamEncoder procedure
  OnFrame: encoder_queue_.PostTask(EncodeTask)
  in task: EncodeVideoFrame() video_sender_.AddVideoFrame(frame)

nareix

// qemu run arm
// https://www.raspberrypi.org/forums/viewtopic.php?f=91&t=112259
qemu-system-arm -kernel kernel-qemu-4.1.7-jessie -cpu arm1176 -m 256 -M versatilepb -serial stdio -append "root=/dev/sda2 panic=1 rootfstype=ext4 rw" -hda 2015-09-24-raspbian-jessie.img

// qemu machine list
Supported machines are:
akita                Akita PDA (PXA270)
borzoi               Borzoi PDA (PXA270)
canon-a1100          Canon PowerShot A1100 IS

nareix

local P = {}

P.reject = function (err)
	return P.new(function (fulfill, reject) 
		reject(err)
	end)
end

P.resolve = function (r)
	return P.new(function (fulfill, reject) 

nareix

# Source: http://tamsler.blogspot.com/2009/02/patching-with-git-diff.html

# If you want to create a patch file via "git diff" 
# that can be applied using "patch -p0 < patchfile" use the following command:

git diff --no-prefix > patchfile

# then apply the patch

patch -p0 < patchfile

nareix

<!DOCTYPE busconfig PUBLIC
          "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
          "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

  <!-- Only root or user avahi can own the Avahi service --> 
  <policy user="avahi">
    <allow own="org.freedesktop.Avahi"/>
  </policy>
  <policy user="root">