Libav Summer Of Code 2013 - Revision history

Lu zero: /* 1st Tier Project Proposals */

2013-03-30T05:13:20Z

1st Tier Project Proposals

← Older revision		Revision as of 22:13, 29 March 2013
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	'''Mentor: [[User:DonDiego\|Diego Biurrun]]'''		'''Mentor: [[User:DonDiego\|Diego Biurrun]]'''

			'''Co-Mentor: [[User:lu_zero\|Luca Barbato]]'''

	=== The Grand Refactoring (working title) ===		=== The Grand Refactoring (working title) ===
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	'''Mentor: [[User:DonDiego\|Diego Biurrun]]'''		'''Mentor: [[User:DonDiego\|Diego Biurrun]]'''

			'''Co-Mentor: [[User:lu_zero\|Luca Barbato]]'''

	=== Rewrite the ASF muxer and demuxer ===		=== Rewrite the ASF muxer and demuxer ===
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	'''Mentor: [[User:mstorsjo\|Martin Storsjö]]'''		'''Mentor: [[User:mstorsjo\|Martin Storsjö]]'''

			'''Co-Mentor: [[User:lu_zero\|Luca Barbato]]'''

	== 2nd Tier Project Proposals ==		== 2nd Tier Project Proposals ==

Jruggle: add myself as co-mentor for filters project idea

2013-03-27T20:23:21Z

add myself as co-mentor for filters project idea

← Older revision		Revision as of 13:23, 27 March 2013
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	'''Mentor: [[User:elenril\|Anton Khirnov]]'''		'''Mentor: [[User:elenril\|Anton Khirnov]]'''

			'''Co-Mentor: [[User:Jruggle\|Justin Ruggles]]'''

	=== Adobe DNG Decoder (Basic Support) ===		=== Adobe DNG Decoder (Basic Support) ===

Mstorsjo at 10:19, 27 March 2013

2013-03-27T10:19:14Z

← Older revision		Revision as of 03:19, 27 March 2013
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	'''Mentor: [[User:Jruggle\|Justin Ruggles]]'''		'''Mentor: [[User:Jruggle\|Justin Ruggles]]'''

			=== Streaming protocol improvements ===

			* Implement support for producing data for Adobe HTTP Dynamic Streaming and MPEG DASH
			* Implement support for receiving the same

			Alternatively you can also implement support for another new streaming protocol we currently don't support, or improve the ones we currently support.

			'''Mentor: [[User:mstorsjo\|Martin Storsjö]]'''

	== 2nd Tier Project Proposals ==		== 2nd Tier Project Proposals ==

Jruggle: move DNG project to 1st tier

2013-03-27T09:51:40Z

move DNG project to 1st tier

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 '''Mentor: [[User:elenril|Anton Khirnov]]'''
 == 2nd Tier Project Proposals ==
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 The initial SILK code had been written as result of the previous attempt to support Opus
 '''Mentor: [[User:Jruggle|Justin Ruggles]]'''

Lu zero: /* The Grand Refactoring (working title) */

2013-03-24T13:16:23Z

The Grand Refactoring (working title)

← Older revision		Revision as of 06:16, 24 March 2013
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	=== The Grand Refactoring (working title) ===		=== The Grand Refactoring (working title) ===

	Many parts of the libav codebase are still unnecessarily monolithic. This makes custom builds that only support a subset of the multitude of formats we have larger than they need to be. The goal of this project will be to locate parts that can be separated and refactor the code so that each subpart can be compiled standalone so as to not increase the size of a custom configuration without the part.		Many parts of the libav codebase are still unnecessarily monolithic. This makes custom builds that only support a subset of the multitude of formats we have larger than they need to be and slows down the compiling time on multicore systems.

			The goal of this project will be to locate parts that can be separated and refactor the code so that each subpart can be compiled standalone so as to not increase the size of a custom configuration without the part.

	A suitable qualification task for this project is picking a simple encoder/decoder pair or some part of dsputil (harder) and splitting it cleanly.		A suitable qualification task for this project is picking a simple encoder/decoder pair or some part of dsputil (harder) and splitting it cleanly.

Lu zero: /* spin off build system into a separate project */

2013-03-24T13:14:26Z

spin off build system into a separate project

← Older revision		Revision as of 06:14, 24 March 2013
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	'''Mentor: [[User:elenril\|Anton Khirnov]]'''		'''Mentor: [[User:elenril\|Anton Khirnov]]'''

	=== ~~spin~~ off build system into a separate project ===		=== Spin off build system into a separate project ===

	Our build system is neat enough to make into a more general solution to be reused by other projects.		Our build system is neat enough to make into a more general solution to be reused by other projects.

Lu zero: /* Hardware Acceleration API */

2013-03-24T12:55:32Z

Hardware Acceleration API

← Older revision		Revision as of 05:55, 24 March 2013
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	=== Hardware Acceleration API ===		=== Hardware Acceleration API ===

	Libav has two different ~~and incomplete APIs~~ to provide hardware acceleration wrapping. One, deprecated, is to make a full decoder and signal its capabilities somehow, the other integrates in the stock decoder, has some provision for transparent fallback, but lacks a clean way to setup and pass configuration options to it.		Libav has two different ways to provide hardware acceleration wrapping.

	The project should improve ~~the available abstraction, migrate the currently implemented ones~~ and add more ~~hardware acceleration interfaces~~.		One, deprecated, is to make a full decoder and signal its capabilities somehow, the other, called '''hwaccel''', provides some API hooks to integrate the hardware acceleration in the stock decoder.

			Currently '''hwaccel''' has some provision for transparent fallback, but lacks a clean way to setup and pass configuration options to it.

			The project should improve hwaccel in this regard and add support for more accelerators.

	* Draft the API (that will require knowledge of libavcodec).		* Draft the API (that will require knowledge of libavcodec).
	* ~~Port vaapi/hwaccel to~~ the ~~new API.~~		* Extend the current implemented support to leverage the new features.
	* Port VDPAU to the new ~~API~~.
	* Implement Freescale VPU support.		* Implement Freescale VPU support.
	* Implement TI dce support.		* Implement TI dce support.

Elenril: /* 1st Tier Project Proposals */

2013-03-21T09:14:22Z

1st Tier Project Proposals

← Older revision		Revision as of 02:14, 21 March 2013
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	'''Mentor: [[User:Kostya\|Kostya Shishkov]]'''		'''Mentor: [[User:Kostya\|Kostya Shishkov]]'''

			=== Extend the libavfilter filter collection ===
			Libavfilter, our library for audio and video filtering, is slowly reaching the level of mature and usable code, but the number of filters in it is still very small. The goal of this project would be to find the most useful filters (under appropriate licences) in projects like Avisynth, SoX, ImageMagick, etc. and port them to libavfilter. Depending on the student's experience level, he or she can also write the filters from scratch.

			A qualification task would be writing a very simple filter, to make the student familiar with libavfilter.

			'''Mentor: [[User:elenril\|Anton Khirnov]]'''

	== 2nd Tier Project Proposals ==		== 2nd Tier Project Proposals ==

Kostya at 18:43, 20 March 2013

2013-03-20T18:43:50Z

← Older revision		Revision as of 11:43, 20 March 2013
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	'''Mentor: [[User:elenril\|Anton Khirnov]]'''		'''Mentor: [[User:elenril\|Anton Khirnov]]'''

	~~== 2nd Tier Project Proposals ==~~

	~~None of the following project have a mentor confirmed yet.~~

	=== Rewrite the RealMedia demuxer ===		=== Rewrite the RealMedia demuxer ===
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	The project aims to be a full blown rewrite to make a feature complete demuxer.		The project aims to be a full blown rewrite to make a feature complete demuxer.

	'''Mentor: ~~???~~'''		'''Mentor: [[User:Kostya\|Kostya Shishkov]]'''

			== 2nd Tier Project Proposals ==

			None of the following project have a mentor confirmed yet.

	=== Language bindings ===		=== Language bindings ===

Elenril: /* 1st Tier Project Proposals */

2013-03-20T18:23:04Z

1st Tier Project Proposals

← Older revision		Revision as of 11:23, 20 March 2013
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	A qualification task would be adding support for chapters (called 'markers' in ASF) to the current ASF muxer.		A qualification task would be adding support for chapters (called 'markers' in ASF) to the current ASF muxer.

			'''Mentor: [[User:elenril\|Anton Khirnov]]'''

			=== Support for concatenation in avconv ===

			One of the most important features still missing from our multimedia transcoder avconv is proper support for concatenating (joining) media streams. The goals of this project would be to:
			* add support for concatenating input streams when transcoding
			* add support for concatenating outputs of the filtergraphs when transcoding
			* (if time allows) add support for concatenating input streams when doing streamcopy.

			A qualification task would be adding support for looping of arbitrary input files, to familiarize the student with avconv.

	'''Mentor: [[User:elenril\|Anton Khirnov]]'''		'''Mentor: [[User:elenril\|Anton Khirnov]]'''