Software architecture - Revision history

Ilya at 09:20, 24 September 2005

2005-09-24T09:20:10Z

← Older revision		Revision as of 09:20, 24 September 2005
Line 1:		Line 1:
	~~'''''Elphel Network Cameras Manual'''''~~
	~~----~~
	~~[[Using the cameras]] \|~~
	~~[[Camera software]] \|~~
	~~[[Camera hardware]] \|~~
	~~[[Diagnostic and repair]] \|~~
	~~[[Development documentation]] \|~~
	~~[[Information]] \|~~
	~~[[Glossary]] \|~~
	~~[[About Elphel, Inc]]~~
	~~----~~
	~~[[Empty]] \|~~
	~~[[Software architecture]] \|~~
	~~[[Empty]] \|~~
	~~[[Empty]] \|~~
	~~[[Empty]]~~
	~~----~~

	~~== Software Architecture of Elphel 3x3 cameras ==~~
	Software in the Elphel cameras started from [http://developer.axis.com/ Axis Developer Boards Software] and was amended for the camera specific functions. It was modified to work with newer hardware (models 303-313/323-333), support more features and now it seems to be a good time to make a major redesign instead of applying incremental changes.

	~~Some discussion already started in Russian here - [[Nc3x3]]~~

	~~Related to the architecture are the [[#Camera Interface]] and the [[#Client Software]]~~
	~~=== Camera Interface ===~~

	~~=== Client Software ===~~

	~~=== Video Server ===~~
	PC-based video server that will archive incoming Ogg Theora incoming streams from several cameras and transcode them on the fly to lower resolution (binary decimation, windowing) and frame rate (i.e. using only key frames) presenting multiple streams (real time and recorded) to the operator. The external interface of the server might be one of the industry standard and compatible with 3-rd party legacy software.

	~~== See also ==~~
	~~[[Roadmap#Software Architecture of Elphel 3x3 cameras]]~~
	~~----~~

	~~''Free Software and Open Hardware. Elphel, Inc., 2005''~~

Khlut: /* Video Server */

2005-09-23T06:12:14Z

Video Server

← Older revision		Revision as of 06:12, 23 September 2005
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	PC-based video server that will archive incoming Ogg Theora incoming streams from several cameras and transcode them on the fly to lower resolution (binary decimation, windowing) and frame rate (i.e. using only key frames) presenting multiple streams (real time and recorded) to the operator. The external interface of the server might be one of the industry standard and compatible with 3-rd party legacy software.		PC-based video server that will archive incoming Ogg Theora incoming streams from several cameras and transcode them on the fly to lower resolution (binary decimation, windowing) and frame rate (i.e. using only key frames) presenting multiple streams (real time and recorded) to the operator. The external interface of the server might be one of the industry standard and compatible with 3-rd party legacy software.

			== See also ==
			[[Roadmap#Software Architecture of Elphel 3x3 cameras]]
	----		----

	''Free Software and Open Hardware. Elphel, Inc., 2005''		''Free Software and Open Hardware. Elphel, Inc., 2005''

Ilya at 22:42, 22 September 2005

2005-09-22T22:42:46Z

← Older revision		Revision as of 22:42, 22 September 2005
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	[[About Elphel, Inc]]		[[About Elphel, Inc]]
	----		----
	[[~~Background~~]] \|		[[Empty]] \|
	[[Software architecture]] \|		[[Software architecture]] \|
	[[~~Nc3x3~~]] \|		[[Empty]] \|
	[[Empty]] \|		[[Empty]] \|
	[[Empty]]		[[Empty]]

Ilya at 22:14, 22 September 2005

2005-09-22T22:14:28Z

← Older revision		Revision as of 22:14, 22 September 2005
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	[[Background]] \|		[[Background]] \|
	[[Software architecture]] \|		[[Software architecture]] \|
	[[~~Empty~~]] \|		[[Nc3x3]] \|
	[[Empty]] \|		[[Empty]] \|
	[[Empty]]		[[Empty]]

Ilya at 21:58, 22 September 2005

2005-09-22T21:58:25Z

← Older revision		Revision as of 21:58, 22 September 2005
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	[[Empty]]		[[Empty]]
	----		----

	~~== Background ==~~
	I (Andrey Filippov) quit my job and started Elphel, Inc. in 2001 (Magna, UT USA), all the projects were covered in [http://www.linuxdevices.com LinuxDevices] (complete list on the articles is available [http://www.elphel.com/articles/index.html here]). For several years Elphel was a one-man company, in January 2004 I wrote an article [http://www.computerra.ru/hitech/tech/31862/ Taming of the Iron Penguin (Russian)] in the largest Russain computer-related magazine [http://www.computerra.ru Computerra] and announced there a competition among the software developers for the best video steramer to run in the camera. That was a good idea and after the competition itself was over most of the developers remained in the Elphel team. At first - as volunteers, later - as full/part time employees.

	Not all of these developers live in Russia - two, including the winner of the competition are from Kiev, Ukraine. But still all of them know Russian much better than English and so most of our technical discussions were on our private Russian-language forum. So far I failed to move these discussions to the broader audience but believe that Wiki technology can help. Here we will mantain most of the site in English but still have some pages/discussions in Russian, translating documents as we go. Or when somebody else needs it and is not satisfied with [http://babelfish.altavista.com Babelfish] automatic translation. We will try to keep English pages current - anyway even in Elphel not everybody knows Russian.

	~~Please excuse not-so-good English of our developers and feel free to fix the errors if you see them.~~

	== Software Architecture of Elphel 3x3 cameras ==		== Software Architecture of Elphel 3x3 cameras ==

Ilya at 21:57, 22 September 2005

2005-09-22T21:57:04Z

← Older revision		Revision as of 21:57, 22 September 2005
Line 10:		Line 10:
	[[About Elphel, Inc]]		[[About Elphel, Inc]]
	----		----
			[[Background]] \|
	[[Software architecture]] \|		[[Software architecture]] \|
	[[Empty]] \|		[[Empty]] \|

Ilya at 21:52, 22 September 2005

2005-09-22T21:52:19Z

← Older revision		Revision as of 21:52, 22 September 2005
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	----		----
	[[Software architecture]] \|		[[Software architecture]] \|
	[[~~Camera Interface~~]] \|		[[Empty]] \|
	[[~~Client Software~~]] \|		[[Empty]] \|
	[[~~Video Server~~]]		[[Empty]]
	----		----

			== Background ==
			I (Andrey Filippov) quit my job and started Elphel, Inc. in 2001 (Magna, UT USA), all the projects were covered in [http://www.linuxdevices.com LinuxDevices] (complete list on the articles is available [http://www.elphel.com/articles/index.html here]). For several years Elphel was a one-man company, in January 2004 I wrote an article [http://www.computerra.ru/hitech/tech/31862/ Taming of the Iron Penguin (Russian)] in the largest Russain computer-related magazine [http://www.computerra.ru Computerra] and announced there a competition among the software developers for the best video steramer to run in the camera. That was a good idea and after the competition itself was over most of the developers remained in the Elphel team. At first - as volunteers, later - as full/part time employees.

			Not all of these developers live in Russia - two, including the winner of the competition are from Kiev, Ukraine. But still all of them know Russian much better than English and so most of our technical discussions were on our private Russian-language forum. So far I failed to move these discussions to the broader audience but believe that Wiki technology can help. Here we will mantain most of the site in English but still have some pages/discussions in Russian, translating documents as we go. Or when somebody else needs it and is not satisfied with [http://babelfish.altavista.com Babelfish] automatic translation. We will try to keep English pages current - anyway even in Elphel not everybody knows Russian.

			Please excuse not-so-good English of our developers and feel free to fix the errors if you see them.

			== Software Architecture of Elphel 3x3 cameras ==
	Software in the Elphel cameras started from [http://developer.axis.com/ Axis Developer Boards Software] and was amended for the camera specific functions. It was modified to work with newer hardware (models 303-313/323-333), support more features and now it seems to be a good time to make a major redesign instead of applying incremental changes.		Software in the Elphel cameras started from [http://developer.axis.com/ Axis Developer Boards Software] and was amended for the camera specific functions. It was modified to work with newer hardware (models 303-313/323-333), support more features and now it seems to be a good time to make a major redesign instead of applying incremental changes.

	Some discussion already started in Russian here - [[Nc3x3]]		Some discussion already started in Russian here - [[Nc3x3]]

	Related to the architecture are the [[Camera Interface]] and the [[Client Software]]		Related to the architecture are the [[#Camera Interface]] and the [[#Client Software]]
			=== Camera Interface ===

			=== Client Software ===

			=== Video Server ===
			PC-based video server that will archive incoming Ogg Theora incoming streams from several cameras and transcode them on the fly to lower resolution (binary decimation, windowing) and frame rate (i.e. using only key frames) presenting multiple streams (real time and recorded) to the operator. The external interface of the server might be one of the industry standard and compatible with 3-rd party legacy software.

	----		----
	''Free Software and Open Hardware. Elphel, Inc., 2005''		''Free Software and Open Hardware. Elphel, Inc., 2005''

Ilya at 21:45, 22 September 2005

2005-09-22T21:45:24Z

New page

'''''Elphel Network Cameras Manual'''''
----
[[Using the cameras]] |
[[Camera software]] |
[[Camera hardware]] |
[[Diagnostic and repair]] |
[[Development documentation]] |
[[Information]] |
[[Glossary]] |
[[About Elphel, Inc]]
----
[[Software architecture]] |
[[Camera Interface]] |
[[Client Software]] |
[[Video Server]]
----

Software in the Elphel cameras started from [http://developer.axis.com/ Axis Developer Boards Software] and was amended for the camera specific functions. It was modified to work with newer hardware (models 303-313/323-333), support more features and now it seems to be a good time to make a major redesign instead of applying incremental changes.

Some discussion already started in Russian here - [[Nc3x3]]

Related to the architecture are the [[Camera Interface]] and the [[Client Software]]

----
''Free Software and Open Hardware. Elphel, Inc., 2005''