https://github.com/iwatake2222/libjpeg_porting_microcontroller

Porting libjpeg to microcontrollers (without OS)
https://github.com/iwatake2222/libjpeg_porting_microcontroller

Last synced: 24 days ago
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Porting libjpeg to microcontrollers (without OS)

• Host: GitHub
• URL: https://github.com/iwatake2222/libjpeg_porting_microcontroller
• Owner: iwatake2222
• Created: 2018-01-30T07:08:56.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2018-01-30T07:12:52.000Z (over 7 years ago)
• Last Synced: 2025-07-14T16:55:52.478Z (3 months ago)
• Language: C
• Size: 287 KB
• Stars: 1
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Porting libjpeg to microcontrollers (without OS)

## How to porting

- Copy Libs folder to your project

- Add all the source files to the project

- Add include path

## Original code

http://www.ijg.org/

jpegsr9c.zip (http://www.ijg.org/files/jpegsr9c.zip)

## What was modified

- created `jconfig.h` based on configuration for mingw

- deleted unnecessary files:

	- sample code

	- source cods for cjpeg, djpeg, jpegtran, rdjpgcom, wrjpgcom

- deleted jmemXXX.c except for jmemansi.c

- modified jmorecfg.h

	- the definition of boolean type, TRUE and FALSE for C++ environment(g++)

	- this is not mandatory if you use gcc

- created dummy_systemcalls.c

	- dummy systen call functions

	- you may be able to use  `--specs=nosys.specs` option if available

	- without this, I got the following error:

		- unlinkr.c:(.text+0x1c): undefined reference to `_unlink'

### You may need to modify the following files depending on your system, and performance and memory usage

- dummy_systemcalls.c

- jinclude.h

- jmorecfg.h

## Note

I confirmed this code with ZYBO (Zynq, Cortex-A9) in baremetal environment in Xilinx SDK.

This code should work for other microcontrollers.