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2010-11-26Fix 3118622, where tile-base jpeg decode does not handle the regionWei-Ta Chen
width correctly in Progressive JPEG when the h_samp_factor is different from one color component to anothor. To decode a region in a progressive JPEG, each time we decode one iMCU row, the width of which equals to the region width. However, for each color component the region width in DCT blocks depends on its h_samp_factor. The change ensures we get a correct region width from our recorded MCU_column number. Bug: 3118622 Change-Id: I6d3e30f946e0395c0719aee0c8e694824ab3d27f
2010-08-31Improve the tile based decoding performanceJoseph Wen
Change-Id: I4043edff510ffe50fdf47a342d6a95e879918737
2010-08-23Fix a bug related to tile based decodingJoseph Wen
When the sample size is larger than 1. The calculation of image's height and width should be rounding up not down. Change-Id: I6c2ad1f630d1f8f9392594887e23f294ecde2352
2010-08-16Do tile-based jpeg decoding for progressive mode.Joseph Wen
Change-Id: I5619105ae6a6e2505d17260431bc7a91170eecd6
2010-08-04Support tile-based jpeg decoding.This change only handles the baseline case.Joseph Wen
The functionality of tile-based decode is enabled by default. To disable it, mark off the flag of ANDROID_TILE_BASED_DECODE in Android.mk Change-Id: Ib9f7839095b0ca55260c28d3c499c871e81332ea
2009-03-03auto import from //depot/cupcake/@135843android-sdk-tools_r2android-sdk-1.6_r2android-sdk-1.6_r1android-sdk-1.6-docs_r1android-sdk-1.5_r3android-sdk-1.5_r1android-sdk-1.5-preandroid-1.6_r2android-1.6_r1.5android-1.6_r1.4android-1.6_r1.3android-1.6_r1.2android-1.6_r1.1android-1.6_r1android-1.5r4android-1.5r3android-1.5r2android-1.5donut-release2donut-releasedonutcupcake-releasecupcakeThe Android Open Source Project
2009-03-03auto import from //depot/cupcake/@135843The Android Open Source Project
1970-01-12external/jpeg 6bupstream/6bUpstream