8/12-bit JPEG decoder for ASIC and FPGA with scalable, ultra-high performance
- ISO/IEC 10918-1 Standard Baseline and Extended Decoder (Sequential DCT modes)
- Single-frame JPEG images and Motion JPEG payloads
- Up to four color components
- 8- and 12-bit color samples
- All widely used color-sub-sampling formats, and any image size up to 64k x 64k
- All scan configurations and all JPEG formats
- All marker segments expect DNL
- Up to four Huffman Tables
- Up to four b-nit or 18-bit Quantization tables
- AXI Streaming I/O data interfaces
- APB Control/Status interface
- Optional AHB wrapper with DMA capabilities
- Synthesis-time configurable scalable architecture
- Very high throughput: up to 32 samples per clock cycle
- Achieves maximum throughput when decoding streams produced by JPEG-EX-F
Ease of Integration
- Requires no programming or control from host
- Reports image format
- Detects and reports marker syntax errors
- Delivered with bit-accurate software model
- Optional Block-to-Raster Conversion with AXI or standard memory interface towards the lines buffer
Call or click.
JPEG Lossy Encoders
- JPEG-E-S Baseline JPEG Encoder Core
- JPEG-EX-S Baseline and Extended
- JPEG-EX-F Ultra-Fast Baseline and Extended
JPEG Lossy Decoders
- JPEG-LS-E Lossless & Near-Lossless JPEG-LS Encoder
See the JPEG entry at Wikipedia.
See the Motion JPEG entry at Wikipedia.
JPEG-DX-F Ultra-Fast Baseline and Extended JPEG Decoder
This JPEG decompression IP core supports the Baseline Sequential DCT and Extended Sequential DCT modes of the ISO/IEC 10918-1 standard. It implements a scalable, ultra-high-performance, ASIC or FPGA, hardware JPEG decoder that handles extremely high pixel rates.
The JPEG-DX-F Decoder decompresses JPEG images and the video payload for Motion-JPEG container formats. It accepts compressed streams of images with 8- or 12-bit color samples and up to four color components, in all widely-used color subsampling formats.
Depending on its configuration, the decoder processes from two to 32 color samples per clock cycle. Its high throughput capabilities are best exploited when decompressing streams produced by the JPEG-EX-F Encoder Core. This Encoder-Decoder pair provide an extremely cost effective solution for streaming or archiving UHD (4K/8K) video, or very high frame rates at lower resolutions.
Once programmed, the easy-to-use decoder operates on a standalone basis, parsing marker segments and decompressing coded data with no assistance from a host processor. The decoder reports the image format (i.e., resolution, subsampling format, and color sample-depth) to the system, so that the decoded images are properly further processed and/or displayed.
SoC integration is straightforward thanks to standardized AMBA® interfaces: AXI Streaming for pixel and decompressed data, and a 32-bit APB slave interface for registers access.
Customers with a short time to market requirements can use CAST’s IP Integration Services to receive complete JPEG subsystems. These integrate the JPEG encoder with video interface controllers, Hardware UDPIP or Transport Stream networking stacks, or other IP cores available from CAST.
The core is designed with industry best practices, and its reliability and low risk have been proven through both rigorous verification and customer production. Its deliverables include a complete verification environment and a bit-accurate software model.
This core can be mapped to any any Intel, Lattice, MicroSemi, or Xilinx programmable device, or to any ASIC technology, provided sufficient silicon resources are available. Please contact CAST Sales to get accurate characterization data for your specific implementation requirements. Meanwhile, we provide the following representative results (each in a new pop-up window):
The JPEG-DX-F core’s great throughput makes it suitable for systems supporting ultra-high frame resolutions and/or frame rates, such as:
Corporate, airborne, and other security or surveillance systems.
Machine vision and video link decoders/terminals for industrial or defense systems.
Medical imaging systems.
Silicon Resources Utilization
The silicon resources requirements for the JPEG-DX-F en-coder core depend on its configuration. A two samples per cycle configuration synthesizes to approximately 110K gates and requires 50k-bits of memory.
The core has been verified through extensive synthesis, place and route and simulation runs. It has also been embedded in several products, and is proven in both ASIC and FPGA technologies.
The core as delivered is warranted against defects for ninety days from purchase. Thirty days of phone and email technical support are included, starting with the first interaction. Additional maintenance and support options are available.
The core is available in ASIC (synthesizable HDL) and FPGA (netlist) forms, and includes everything required for successful implementation:
- Verilog RTL source code
- Sophisticated self-checking Testbench
- Software (C++) Bit-Accurate Model
- Sample simulation and synthesis scripts
- Comprehensive user documentation
JPEG Cores available from CAST
The JPEG-DX-F is a member of the JPEG family of cores that CAST offers. The following table summarizes the family members and highlights their basic features.
|JPEG IP Cores||JPEG-LS IP Cores|
|Compression Standard||JPEG — ISO/IEC 10918-1||JPEG-LS — ISO/IEC 14495-1|
|Supported Standard Modes||Baseline Sequential DCT||Baseline Sequential DCT and Extended Sequential DCT||Lossless& NEAR lossless||Baseline Sequential DCT and Extended Sequential DCT||Lossless & NEAR lossless|
|Motion JPEG Payload|
|Sub-sampling Formats||Any with up to four components including Single–color, 4:4:4, 4:2:2, 4:2:0|
|Max. Image Resolution||64k x 64k||64k x 64k||> 64k x 64k|
|Max. Sample Depth||8||12||12||8||12||12||16|
|Raster Conversion||Included – Optionally Instantiated||Included – Optionally Instantiated||N/A|
|Color Samples/Cycle||1||1||1 to 32||1||1||1 to 32||1 to 32||1 to 32|
|ASIC Area (eq. Gates)||70k||80k||120k1||65k||75k||110k1||40K2||40K2|
|Available in RTL Source Code|
|Available as targeted netlist|
1) Silicon Resources for two samples/cycle configuration, and 12 bits per color sample.
2) Silicon Resources for one sample/cycle configuration, and 8 bits per color sample.