libpng and libjpeg usage

sample to read and write jpeg format file use libjpeg sample to read and write png format file use libpng

Name		Name	Last commit message	Last commit date
Latest commit History 4 Commits
1.png		1.png
README.md		README.md
jpeg_sample.c		jpeg_sample.c
png_sample.c		png_sample.c
resize_image.c		resize_image.c
test.jpg		test.jpg

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