Old Freescale scheme:

                        ---------------------
                 ------>| ------- v2ipd --> |--> | vlc      -> net
                 |      ---------|-----|-----    | lighttpd -> net
                 |               V     |
                 |              ---------
             V4L2 API           |libvpu |            user
............................................................
       | |mx27_capture|         |mxcvpu |
mt9d131| |mx27_csi    |         |encoder|            kernel
............................................................
 sensor| |CSI | | PrP | | CPU | |  VPU  |            hardware
-------- ------ ------- ------- ---------
         |                SoC           |
         --------------------------------


Gstreamer scheme:

               --------------------------------------------------------
               | gstreamer:  gst-launch / gst-rtsp                    |
               |......................................................|
         ----->| alsa_src   --->  |audio-codec|--                     |
         |     |................................V.....................|
         |     | mfw_v4lsr  --->  |mfw_vpu|mpegtsmux|rtp*pay| udpsink | -> net
         |     --------------------------------------------------------
     --------      ^               |     ^
     | alsa |      |               |     |
     |------|      |               V     |
     | pmic |      |              ---------
     --------  V4L2|API           |libvpu |               user
........ ^ .......................................................
       | : |mx27_capture|         |mxcvpu |
mt9d131| : |mx27_csi    |         |encoder|               kernel
........ : .......................................................
 sensor| : |CSI | | PrP | | CPU | |  VPU  |               hardware
-------- : ------ ------- ------- ---------
-------- : |                SoC           |
uPhone |-: --------------------------------
--------


MJPEG scheme:

               -------------------------------------------------------
               | sigcam-stream -format jpeg ... -> lighttpd           | -> net
               -------------------------------------------------------
                   ^
                   |
               V4L2|API                                   user
                   |
........   .......................................................
       |   |mx27_capture|
mt9d131|   |mx27_csi    |                                 kernel
........   .......................................................
 sensor|   |  CSI  DMA  | | CPU | |  VPU  |               hardware
--------   -------------- ------- ---------
           |                SoC           |
           --------------------------------



Hardware:

sensor - Micron/Aptina MT9D131 video sensor
uPhone - audio microphone
SoC - System on a chip, Freescale i.MX27
CSI - CMOS sensor interface
PrP - Emma Lite PreProcessor
CPU - Central Processor Unit, ARM 926
VPU - Video Processing Unit, 16-bit DSP
pmic - some audio hardware in SoC


Software:

mt9d131 - Sensor driver
mx27_csi - CSI driver
mx27_capture - CSI/PrP driver with V4L2 API
V4L2 API - Video for Linux API, version 2
mxcvpu - VPU driver
libvpu - VPU library
alsa - ALSA (Advanced Linux Sound Architecture) driver
v2ipd - Freescale daemon for all video processing and networking
vlc - video broadcasting program
lighttpd - web server


gstreamer plugins:

mfw_v4lsr - Freescale plugin for reading camera frames with V4L2 API.
		Most of video controls are here.
mfw_vpu - Freescale plugin for encoding video via VPU
mpegtsmux - muxing video and audio streams into MPEG Transport Stream
rtp*pay - RTP payloader
udpsink - UDP payloader/broadcasting plugin
alsa_src - ALSA (Advanced Linux Sound Architecture) plugin
audio-codec - now undefined audio codec