|
Black Eyes : CoDec Video JPEG & M-PEG
for DSPs BlackFin BF53x processors
The CoDec Video M-JPEG BlackEyes developped by Arbos Engineering
allows the integration, on BlackFin BF53x Analog Devices processors
, of solutions requiring the use of a standard video M-JPEG
type.
This module authorizes the JPEG (Joint Photographic Experts
Group) - the compression of still image of high definition to
a ratio of compression of 30:1. The JPEG algrorithm implemented
in BlackEyes is based on Discrete Consine Transform (DCT) with
standardization ISO/IEC 10918-1.
In that way, it allows the compression and decompression of
still images (Still JPEG ) or of a video flow, by concatenation,
of still images (JPEG Motion). In order to respect the economic
and technical constraints of low cost solutions, the code has
been written in assembler and optimized for the BF531 processor
architecture.
The delivered software sequence consists of 2 modules librairies
( Encoder / decoder ) with interfaces of API type ( Application
Programming Interface ). Consequently the final application
can be developped in C language. .
 Download
pdf doc
BlackEyes Module characteristics
Supported processors
 ADSP-BF535,
BF533, BF532 & BF531.
Supported Modes
JPEG
M-JPEG
Codings tables
Quantization et Huffman
separated for luma (Y) and chroma (Cr, Cb )
Supported formats
QCIF, CIF, VGA
RGB, YcrCb, 4:4:4 4:4:2 4:2:0 4:0:0
Filterings
Pre-filtering
Post-filtering : Deblocking
Performances
Encoder
Size 3K5
SRAM ressources ( internal ) : 3K
SDRAM ressources ( external ) : 100K
Cycle by pixel ( QCIF ) : 157
25 fps in QCIF
Décodeur
Taille 3K1
SRAM ressources ( internal ) : 3K
SDRAM ressources ( external ) : 50K
Cycle by pixel ( QCIF ) : 141
25 fps in QCIF
Delivered with
User and integration manual
Design of reference
List of typical materiel ( BOM )
Kit of resources dimensioning
(using a ADDS-BF533-EZKit board)
User interface source code
Library Object Code
Utility for diagnosis
Test plan
© ARBOS Ingénierie 2002, Tous droits réservés
|
|