Baseline JPEG Image & Video Decoder

Overview

The JPEG-D core from Alma Technologies is a standalone and high-performance Baseline JPEG decoder for still image and video compression applications. Compliance with the Baseline Sequential DCT mode of the ISO/IEC 10918-1 JPEG standard makes the JPEG-D core ideal for interoperable systems and devices.

In addition to decoding standard Baseline JPEG streams, the core is also capable of decompressing the video payload of many (de facto) standard motion JPEG container formats.

The core is designed with simple, fully controllable and FIFO-like, streaming input and output interfaces. Being carefully designed, rigorously verified and silicon-proven, the JPEG-D is a reliable and easy-to-use and integrate IP.

Key Features

Complete, Compliant and Standalone Operation

ISO/IEC 10918-1 compliant 8-bit Baseline JPEG decoder
Up to 64K x 64K image resolution
Up to four stream programmable Quantization Tables
Up to four stream programmable Huffman Tables (two DC, two AC)
Stream programmable Restart Markers
Single- and multi-scan support
All three compressed data formats supported

Interchange format
Abbreviated format for compressed image data
Abbreviated format for table-specification data

Motion JPEG payload decoding
CPU-less, complete and standalone operation

Limitations with Respect to the ISO/IEC 10918-1 JPEG Standard

Up to 4 image components
Sampling factors 1, 2 and 4
The DNL marker is not supported
Decoding of corrupted JPEG streams is not supported

Ease of Integration

Automatic self-programming by JPEG markers parsing
JPEG marker errors catching features
Simple, microcontroller like, programming interface
High-speed, flow controllable, streaming I/O data interfaces

Simple and FIFO like
Avalon-ST compliant (ready latency 0)
AXI4-Stream compliant

Trouble-Free Technology Map and Implementation

Fully portable, self-contained RTL source code
Strictly positive edge triggered design
D-type only Flip-Flops
Fully synchronous operation
No special timing constraints required

No false paths
No multi-cycle paths

Block Diagram

Deliverables

Clear text VHDL or Verilog RTL source for ASIC designs, or pre-synthesized & verified Netlist for Altera, Lattice, Microsemi and Xilinx FPGA and SoC devices
Release Notes, Design Specification and Integration Manual documents
Bit Accurate Model (BAM) and test vector generation binaries, including sample scripts
Self checking testbench environment, including sample BAM generated test cases
Simulation and sample Synthesis (for ASICs) or Place & Route (for FPGAs) scripts

Technical Specifications

Maturity

Silicon Proven

Availability

NOW

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