witch to faster jpeg-turbo

Author: akshayaurora

src/jni/jpeg/Android.mk

@@ -1,37 +1,79 @@
-LOCAL_PATH:= $(call my-dir)
+LOCAL_PATH := $(my-dir)
 include $(CLEAR_VARS)
 
 LOCAL_ARM_MODE := arm
 
+# Set ANDROID_JPEG_USE_VENUM to true to enable VeNum optimizations
+ANDROID_JPEG_USE_VENUM := true
+
+# Disable VeNum optimizations if they are not supported on the build target
+ifneq ($(ARCH_ARM_HAVE_VFP),true)
+ANDROID_JPEG_USE_VENUM := false
+else
+ifneq ($(ARCH_ARM_HAVE_NEON),true)
+ANDROID_JPEG_USE_VENUM := false
+endif
+endif
+
 LOCAL_SRC_FILES := \
+	de_mjpegsample_NativeJpegLib.c \
 	jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
 	jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
 	jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
 	jdatadst.c jdatasrc.c jdcoefct.c jdcolor.c jddctmgr.c jdhuff.c \
 	jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
 	jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
-	jfdctint.c jidctflt.c jidctred.c jquant1.c \
+	jfdctint.c jidctflt.c jquant1.c \
 	jquant2.c jutils.c jmemmgr.c \
+
+# use ashmem as libjpeg decoder's backing store
+#LOCAL_CFLAGS += -DUSE_ANDROID_ASHMEM
+#LOCAL_SRC_FILES += \
+	jmem-ashmem.c
+
+# the original android memory manager.
+# use sdcard as libjpeg decoder's backing store
+LOCAL_SRC_FILES += \
 	jmem-android.c
 
+
 # the assembler is only for the ARM version, don't break the Linux sim
 ifneq ($(TARGET_ARCH),arm)
 ANDROID_JPEG_NO_ASSEMBLER := true
 endif
 
-# temp fix until we understand why this broke cnn.com
-#ANDROID_JPEG_NO_ASSEMBLER := true
-
 ifeq ($(strip $(ANDROID_JPEG_NO_ASSEMBLER)),true)
-LOCAL_SRC_FILES += jidctint.c jidctfst.c
+LOCAL_SRC_FILES += jidctint.c jidctfst.c jidctred.c
 else
-LOCAL_SRC_FILES += jidctint.c jidctfst.S
+ifeq ($(ANDROID_JPEG_USE_VENUM),true)
+LOCAL_SRC_FILES += jidctvenum.c
+LOCAL_SRC_FILES += asm/armv7/jdcolor-armv7.S
+LOCAL_SRC_FILES += asm/armv7/jdcolor-android-armv7.S
+LOCAL_SRC_FILES += asm/armv7/jdidct-armv7.S
+LOCAL_CFLAGS    += -DANDROID_JPEG_USE_VENUM
+else # ANDROID_JPEG_USE_VENUM, false
+LOCAL_SRC_FILES += jidctint.c jidctred.c jidctfst.c armv6_idct.S
+LOCAL_CFLAGS    += -DANDROID_ARMV6_IDCT
+endif # ANDROID_JPEG_USE_VENUM
 endif
 
-LOCAL_CFLAGS += -DAVOID_TABLES 
+LOCAL_CFLAGS += -DAVOID_TABLES
 LOCAL_CFLAGS += -O3 -fstrict-aliasing -fprefetch-loop-arrays
-#LOCAL_CFLAGS += -march=armv6j
+
+# enable tile based decode
+LOCAL_CFLAGS += -DANDROID_TILE_BASED_DECODE
+
+ifdef NEEDS_ARM_ERRATA_754319_754320
+asm_flags := \
+	--defsym NEEDS_ARM_ERRATA_754319_754320_ASM=1
+
+LOCAL_CFLAGS+= \
+	$(foreach f,$(asm_flags),-Wa,"$(f)")
+endif
 
 LOCAL_MODULE:= jpeg
 
-include $(BUILD_STATIC_LIBRARY)
+LOCAL_SHARED_LIBRARIES := \
+	libcutils
+
+include $(BUILD_SHARED_LIBRARY)

src/jni/jpeg/CleanSpec.mk

@@ -0,0 +1,49 @@
+# Copyright (C) 2007 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# If you don't need to do a full clean build but would like to touch
+# a file or delete some intermediate files, add a clean step to the end
+# of the list.  These steps will only be run once, if they haven't been
+# run before.
+#
+# E.g.:
+#     $(call add-clean-step, touch -c external/sqlite/sqlite3.h)
+#     $(call add-clean-step, rm -rf $(PRODUCT_OUT)/obj/STATIC_LIBRARIES/libz_intermediates)
+#
+# Always use "touch -c" and "rm -f" or "rm -rf" to gracefully deal with
+# files that are missing or have been moved.
+#
+# Use $(PRODUCT_OUT) to get to the "out/target/product/blah/" directory.
+# Use $(OUT_DIR) to refer to the "out" directory.
+#
+# If you need to re-do something that's already mentioned, just copy
+# the command and add it to the bottom of the list.  E.g., if a change
+# that you made last week required touching a file and a change you
+# made today requires touching the same file, just copy the old
+# touch step and add it to the end of the list.
+#
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************
+
+# For example:
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/APPS/AndroidTests_intermediates)
+#$(call add-clean-step, rm -rf $(OUT_DIR)/target/common/obj/JAVA_LIBRARIES/core_intermediates)
+#$(call add-clean-step, find $(OUT_DIR) -type f -name "IGTalkSession*" -print0 | xargs -0 rm -f)
+#$(call add-clean-step, rm -rf $(PRODUCT_OUT)/data/*)
+
+# ************************************************
+# NEWER CLEAN STEPS MUST BE AT THE END OF THE LIST
+# ************************************************

src/jni/jpeg/README-VeNum

@@ -0,0 +1,20 @@
+README-VeNum
+Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum
+=================================================================
+
+Consumers are increasingly browsing Web based photo galleries incorporating
+high-resolution JPEG images with their mobile devices. These images are
+decoded by the mobile device, and typically also scaled down to fit the user's
+zoom selection on the device's browser.
+
+In order to improve both decode and download times, Qualcomm Innovation Center
+has optimized the JPEG library found on many common OS platforms such as Web
+OS, Android, and Chrome OS. Our team re-implemented several routines to utilize the
+DSP-like SIMD capabilities of the ARM NEON instruction set. These were then
+tuned and tested on Qualcomm's Snapdragon platform which implements the VeNum
+implementation of these same instructions.
+
+The specific areas of focus cover VeNum/NEON acceleration of Inverse Discrete
+Cosine Transform (iDCT) for 8x8, 4x4, 2x2, and 1x1 block sizes and YUV to RGB
+color space conversion. This resulted in a range of 18-32% improvement in JPEG
+decode and downscale times for images greater than 2Mpixels.

src/jni/jpeg/ThirdPartyProject.prop

@@ -0,0 +1,9 @@
+# Copyright 2010 Google Inc. All Rights Reserved.
+#Fri Jul 16 10:03:09 PDT 2010
+currentVersion=8a
+version=6b
+isNative=true
+name=jpeg
+keywords=jpeg
+onDevice=true
+homepage=http\://www.ijg.org/