SoC 2011/Assembly optimizations in VLC - Revision history

Bizon at 23:40, 5 July 2011

2011-07-05T23:40:17Z

@@ Line 25: / Line 25: @@
 At the moment (as of 13th of June), I'm working on posterization filter. As SSE doesn't provide integer division, I have to find solution which will really speed up the computation.
 = Additional information  =
 May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>

Bizon at 22:51, 12 June 2011

2011-06-12T22:51:38Z

← Older revision		Revision as of 22:51, 12 June 2011
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	{{SoCProject\|year=2011\|student=[[User:Bizon\|Martin Briza]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}		{{SoCProject\|year=2011\|student=[[User:Bizon\|Martin Briza]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}

	=== Repository ===		= Repository =

	http://git.videolan.org/?p=vlc/vlc-bizon.git;a=summary		http://git.videolan.org/?p=vlc/vlc-bizon.git;a=summary

	=== Abstract ===		= Abstract =

	The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.		The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.
Line 13:		Line 13:
	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).

	=== Additional information ===		= Progress =


			=== Weeks 1 and 2 (May 23 - June 5) ===

			Exams, no activity on the project

			=== Week 3 (June 6 - 12) ===

			Acclimatization, starting work on YUV to RGB converting function from filter_picture.h to use it in plugins using it. I experienced few minor problems, which unfortunately ended up in me searching for bug where it was not.

			At the moment (as of 13th of June), I'm working on posterization filter. As SSE doesn't provide integer division, I have to find solution which will really speed up the computation.

			= Additional information =

	May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>		May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>

Bizon at 00:08, 23 May 2011

2011-05-23T00:08:07Z

← Older revision		Revision as of 00:08, 23 May 2011
Line 1:		Line 1:
	{{SoCProject\|year=2011\|student=[[User:Bizon\|Martin Briza]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}		{{SoCProject\|year=2011\|student=[[User:Bizon\|Martin Briza]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}

			=== Repository ===

			http://git.videolan.org/?p=vlc/vlc-bizon.git;a=summary

	=== Abstract ===		=== Abstract ===

Bizon at 20:12, 21 May 2011

2011-05-21T20:12:46Z

← Older revision		Revision as of 20:12, 21 May 2011
Line 1:		Line 1:
	{{SoCProject\|year=2011\|student=[[User:~~Houbsi~~\|~~Mike Houben~~]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}		{{SoCProject\|year=2011\|student=[[User:Bizon\|Martin Briza]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}

	=== Abstract ===		=== Abstract ===

Bizon at 20:12, 21 May 2011

2011-05-21T20:12:22Z

← Older revision		Revision as of 20:12, 21 May 2011
Line 1:		Line 1:
			{{SoCProject\|year=2011\|student=[[User:Houbsi\|Mike Houben]]\|mentor=[[User:j-b\|Jean-Baptiste Kempf]]}}

	=== Abstract ===		=== Abstract ===

Bizon: /* Abstract */

2011-05-21T19:17:34Z

Abstract

← Older revision		Revision as of 19:17, 21 May 2011
Line 2:		Line 2:

	The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.		The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.

	~~<br>~~		Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.
	Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.

	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).

Bizon at 19:15, 21 May 2011

2011-05-21T19:15:53Z

← Older revision		Revision as of 19:15, 21 May 2011
Line 3:		Line 3:
	The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.		The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.

			<br>
	Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.		Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.
	~~ ~~
	~~ ~~

	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).
	~~ ~~


	~~<br>~~

	=== Additional information ===		=== Additional information ===

	May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>		May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>

Bizon at 19:15, 21 May 2011

2011-05-21T19:15:21Z

← Older revision		Revision as of 19:15, 21 May 2011
Line 5:		Line 5:

	Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.		Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.



	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).



	<br>		<br>

Bizon at 19:15, 21 May 2011

2011-05-21T19:15:08Z

← Older revision		Revision as of 19:15, 21 May 2011
Line 5:		Line 5:

	Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.		Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.



	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).

Bizon at 19:14, 21 May 2011

2011-05-21T19:14:51Z

← Older revision		Revision as of 19:14, 21 May 2011
Line 1:		Line 1:
	=== Abstract ===		=== Abstract ===

	The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.		The main goal is to optimize video and audio filters of VLC, add SIMD x86 instruction using functions and clean their C code up. Next step is profiling of main VLC.


	~~<br>~~		Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.
	Optimization of functions that process huge amount of data with the same algorithm at the same time with SIMD instructions, so better performance can be achieved. Main focus will be on video and audio filters of VLC and after these are done, profiling of other parts of the application will be the next step.



	~~<br>~~		Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).
	Side effect of the work will be clean up and improvement of algorithms used (same as in sepia.c - change from RGB to YUV, to not lose time converting the format).



	<br>		<br>


	=== Additional information ===		=== Additional information ===

	May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>		May 9 - June 10 are exams on our school, so I won't start coding exactly at the start of the coding period. I'll keep you updated on when I have finished.<br>