Version 1.3.4
libfrg: C\C++ codec of FRG image format.
FRG: "Fast Read Graphics" or "Fast Resource Graphics"
FRG is an image format(like PNG or JPG etc.),for optimize load image time(loading from disk and decoding). It supports 32bit ARGB color image.
FRG是一种为了优化加载和解码需要的时间而开发的图像文件格式,它支持32bit ARGB颜色的图像。
version 1.0.2 performance test:
macosx10.8.3 , CPU:i7 2.3G (single thread), memory: 8G DDR3 1600MHz , 7zip use LZMA2 , load image file from Disk 236MB/s;
1160 bmp files: ARGB32bit color 863,990,576 bytes and 215,980,447 pixels;
note: .jpg no alpha color
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.jpg 100 .jpg 95 .jpg 90 .frg 100 quality .frg 90 .frg 80 .frg 75
.bmp .png quality quality quality (0 size 50 size) (0 size 50 size) (0 size 25 size 50 size) (50 size)
image file size 100.00% 15.13% 15.32% 6.81% 4.72% 21.04% 30.79% 11.52% 13.22% 8.52% 9.31% 9.70% 7.00%
Compressed zip 20.15% 15.09% 14.75% 6.43% 4.41% 17.96% 17.50% 10.29% 10.11% 7.70% 7.56% 7.55% 5.22%
Compressed 7z 11.11% 14.37% 13.85% 5.99% 4.07% 13.24% 11.27% 7.85% 7.41% 5.87% 5.56% 5.53% 3.83%
memory decode
pixels(M/s) 2,074.3 36.1 44.7 59.3 65.2 255.9 625.1 576.3 830.6 650.2 802.7 870.3 900.2
memory decode time(ms) 99.3 5713.3 4613.2 3472.4 3160.1 804.8 329.5 357.4 248.0 316.8 256.6 236.7 228.8
load image file from Disk
236MB/s,load time(ms) 3,491.4 528.1 534.8 237.7 164.8 734.6 1,075.0 402.1 461.4 297.5 325.1 338.6 244.3
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load+decode time (ms) 3,590.7 6,241.4 5,148.0 3,710.1 3,324.9 1,539.4 1,404.5 759.5 709.4 614.3 581.7 575.2 473.2
57.53% 100.00% 82.48% 59.44% 53.27% 24.66% 22.50% 12.17% 11.37% 9.84% 9.32% 9.22% 7.58%
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