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Reduce memory decoding#968

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rouault merged 8 commits intouclouvain:masteruclouvain/openjpeg:masterfrom rouault:reduce_memory_decodingrouault/openjpeg:reduce_memory_decodingCopy head branch name to clipboardAug 7, 2017

+337-169

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Commits on Aug 7, 2017

• Decrease memory consumption for whole image single tile decoding.

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• Fix crash on Windows due to b7594c0

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• Add opj_image_data_alloc() / opj_image_data_free()

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• Complementary fix to previous commit

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• opj_jp2_apply_pclr() also needs to use opj_image_data_alloc/opj_image_data_free

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• Add documentation for magic values in the code

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• Decoding: do not allocate memory for the codestream of each codeblock

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• Slight improvement in management of code block chunks

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