The dfjpegturbo from kean

Hi, I'm Alex (short for Alexander).

Blog: kean.blog
Built Nuke, Pulse, and other popular frameworks and tools
Developed the initial CreateAPI version which is now maintained by @cookpad

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dfjpegturbo's Issues

How to use it with UIImageView?

Concurrent image decoding.

Does this wrapper decodes multiple images concurrently OR serially ? If it decodes serially then how can make it concurrent ?

Benchmark

Hi, I've tried libjpeg-turbo benchmark on iPhone 6 (with updated libjpeg-turbo to 1.4.0) and below are results, as you can see in some cases libjpeg-turbo is slower than AFNetworking, any ideas why?

2015-03-31 10:37:12.013  ---------------------------------------------------
2015-03-31 10:37:12.015  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.250000)
2015-03-31 10:37:12.114  SDWebImageDecoder:
2015-03-31 10:37:12.167  benchmark [46501786 ns, 46.50 ms, 0.0465 s]
2015-03-31 10:37:12.167  AFNetworking
2015-03-31 10:37:12.207  benchmark [40151786 ns, 40.15 ms, 0.0402 s]
2015-03-31 10:37:12.208  DFJPEGTurbo:
2015-03-31 10:37:12.251  benchmark [42878870 ns, 42.88 ms, 0.0429 s]
2015-03-31 10:37:12.251  ---------------------------------------------------
2015-03-31 10:37:12.251  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.500000)
2015-03-31 10:37:12.289  SDWebImageDecoder:
2015-03-31 10:37:12.330  benchmark [40412370 ns, 40.41 ms, 0.0404 s]
2015-03-31 10:37:12.330  AFNetworking
2015-03-31 10:37:12.366  benchmark [35781786 ns, 35.78 ms, 0.0358 s]
2015-03-31 10:37:12.366  DFJPEGTurbo:
2015-03-31 10:37:12.405  benchmark [39091786 ns, 39.09 ms, 0.0391 s]
2015-03-31 10:37:12.406  ---------------------------------------------------
2015-03-31 10:37:12.406  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.750000)
2015-03-31 10:37:12.452  SDWebImageDecoder:
2015-03-31 10:37:12.485  benchmark [33615286 ns, 33.62 ms, 0.0336 s]
2015-03-31 10:37:12.486  AFNetworking
2015-03-31 10:37:12.519  benchmark [32988328 ns, 32.99 ms, 0.0330 s]
2015-03-31 10:37:12.519  DFJPEGTurbo:
2015-03-31 10:37:12.566  benchmark [47049995 ns, 47.05 ms, 0.0470 s]
2015-03-31 10:37:12.567  ---------------------------------------------------
2015-03-31 10:37:12.567  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (1.000000)
2015-03-31 10:37:12.682  SDWebImageDecoder:
2015-03-31 10:37:12.736  benchmark [51647286 ns, 51.65 ms, 0.0516 s]
2015-03-31 10:37:12.737  AFNetworking
2015-03-31 10:37:12.777  benchmark [39616411 ns, 39.62 ms, 0.0396 s]
2015-03-31 10:37:12.777  DFJPEGTurbo:
2015-03-31 10:37:12.871  benchmark [93912786 ns, 93.91 ms, 0.0939 s]
2015-03-31 10:37:12.871  ---------------------------------------------------
2015-03-31 10:37:12.872  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.250000)
2015-03-31 10:37:12.924  SDWebImageDecoder:
2015-03-31 10:37:12.957  benchmark [32692745 ns, 32.69 ms, 0.0327 s]
2015-03-31 10:37:12.958  AFNetworking
2015-03-31 10:37:12.990  benchmark [31745370 ns, 31.75 ms, 0.0317 s]
2015-03-31 10:37:12.990  DFJPEGTurbo:
2015-03-31 10:37:13.028  benchmark [37825995 ns, 37.83 ms, 0.0378 s]
2015-03-31 10:37:13.028  ---------------------------------------------------
2015-03-31 10:37:13.028  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.500000)
2015-03-31 10:37:13.080  SDWebImageDecoder:
2015-03-31 10:37:13.116  benchmark [35420078 ns, 35.42 ms, 0.0354 s]
2015-03-31 10:37:13.116  AFNetworking
2015-03-31 10:37:13.153  benchmark [35493453 ns, 35.49 ms, 0.0355 s]
2015-03-31 10:37:13.153  DFJPEGTurbo:
2015-03-31 10:37:13.193  benchmark [40141620 ns, 40.14 ms, 0.0401 s]
2015-03-31 10:37:13.193  ---------------------------------------------------
2015-03-31 10:37:13.194  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (0.750000)
2015-03-31 10:37:13.257  SDWebImageDecoder:
2015-03-31 10:37:13.294  benchmark [37388245 ns, 37.39 ms, 0.0374 s]
2015-03-31 10:37:13.295  AFNetworking
2015-03-31 10:37:13.329  benchmark [34370203 ns, 34.37 ms, 0.0344 s]
2015-03-31 10:37:13.329  DFJPEGTurbo:
2015-03-31 10:37:13.376  benchmark [46458828 ns, 46.46 ms, 0.0465 s]
2015-03-31 10:37:13.376  ---------------------------------------------------
2015-03-31 10:37:13.376  Benchmarking JPEG decompression with image size: (2048.000000, 1536.000000), compression quality: (1.000000)
2015-03-31 10:37:13.510  SDWebImageDecoder:
2015-03-31 10:37:13.571  benchmark [58246203 ns, 58.25 ms, 0.0582 s]
2015-03-31 10:37:13.574  AFNetworking
2015-03-31 10:37:13.616  benchmark [40694995 ns, 40.69 ms, 0.0407 s]
2015-03-31 10:37:13.616  DFJPEGTurbo:
2015-03-31 10:37:13.711  benchmark [94622495 ns, 94.62 ms, 0.0946 s]
2015-03-31 10:37:13.711  ---------------------------------------------------
2015-03-31 10:37:13.711  Benchmarking JPEG decompression with image size: (8192.000000, 6144.000000), compression quality: (0.250000)
2015-03-31 10:37:14.314  SDWebImageDecoder:
2015-03-31 10:37:16.101  benchmark [1785519370 ns, 1785.52 ms, 1.7855 s]
2015-03-31 10:37:16.107  AFNetworking
2015-03-31 10:37:16.925  benchmark [818056370 ns, 818.06 ms, 0.8181 s]
2015-03-31 10:37:16.925  DFJPEGTurbo:
2015-03-31 10:37:17.500  benchmark [574367661 ns, 574.37 ms, 0.5744 s]
2015-03-31 10:37:17.500  ---------------------------------------------------
2015-03-31 10:37:17.500  Benchmarking JPEG decompression with image size: (8192.000000, 6144.000000), compression quality: (0.500000)
2015-03-31 10:37:18.523  SDWebImageDecoder:
2015-03-31 10:37:19.824  benchmark [1300961203 ns, 1300.96 ms, 1.3010 s]
2015-03-31 10:37:19.827  AFNetworking
2015-03-31 10:37:20.755  benchmark [927528620 ns, 927.53 ms, 0.9275 s]
2015-03-31 10:37:20.756  DFJPEGTurbo:
2015-03-31 10:37:21.413  benchmark [657550578 ns, 657.55 ms, 0.6576 s]
2015-03-31 10:37:21.413  ---------------------------------------------------
2015-03-31 10:37:21.413  Benchmarking JPEG decompression with image size: (8192.000000, 6144.000000), compression quality: (0.750000)
2015-03-31 10:37:22.005  SDWebImageDecoder:
2015-03-31 10:37:23.022  benchmark [1015919870 ns, 1015.92 ms, 1.0159 s]
2015-03-31 10:37:23.022  AFNetworking
2015-03-31 10:37:23.931  benchmark [909446995 ns, 909.45 ms, 0.9094 s]
2015-03-31 10:37:23.932  DFJPEGTurbo:
2015-03-31 10:37:24.657  benchmark [725024036 ns, 725.02 ms, 0.7250 s]
2015-03-31 10:37:24.657  ---------------------------------------------------
2015-03-31 10:37:24.657  Benchmarking JPEG decompression with image size: (8192.000000, 6144.000000), compression quality: (1.000000)
2015-03-31 10:37:26.502  SDWebImageDecoder:
2015-03-31 10:37:28.468  benchmark [1965668495 ns, 1965.67 ms, 1.9657 s]
2015-03-31 10:37:28.472  AFNetworking
2015-03-31 10:37:29.545  benchmark [1072792828 ns, 1072.79 ms, 1.0728 s]
2015-03-31 10:37:29.545  DFJPEGTurbo:
2015-03-31 10:37:30.762  benchmark [1216044953 ns, 1216.04 ms, 1.2160 s]
2015-03-31 10:37:30.860  Received memory warning.

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