From 21f73d8ee68089712c94f5a27aa6cd753711f7c9 Mon Sep 17 00:00:00 2001
From: Dan Willemsen <dwillemsen@google.com>
Date: Tue, 21 Jun 2016 00:29:25 -0700
Subject: Add NDK versions of libjpeg

Change-Id: I9b24c54b0af96ed0fc0886a42657762a055a8871
---
 Android.mk | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 80 insertions(+), 1 deletion(-)

diff --git a/Android.mk b/Android.mk
index 2801805f..8d0757a6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,4 +1,5 @@
 LOCAL_PATH:= $(call my-dir)
+
 include $(CLEAR_VARS)
 
 # By default, the build system generates ARM target binaries in thumb mode,
@@ -87,7 +88,85 @@ ifneq (,$(TARGET_BUILD_APPS))
   LOCAL_SDK_VERSION := 17
 endif
 
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 LOCAL_WHOLE_STATIC_LIBRARIES = libjpeg_static
 LOCAL_MODULE := libjpeg
 include $(BUILD_SHARED_LIBRARY)
+
+
+# Build static library against the NDK
+include $(CLEAR_VARS)
+
+# By default, the build system generates ARM target binaries in thumb mode,
+# where each instruction is 16 bits wide.  Defining this variable as arm
+# forces the build system to generate object files in 32-bit arm mode.  This
+# is the same setting previously used by libjpeg.
+# TODO (msarett): Run performance tests to determine whether arm mode is still
+#                 preferred to thumb mode for libjpeg-turbo.
+LOCAL_ARM_MODE := arm
+
+LOCAL_SRC_FILES := \
+    jcapimin.c jcapistd.c jccoefct.c jccolor.c jcdctmgr.c jchuff.c \
+    jcinit.c jcmainct.c jcmarker.c jcmaster.c jcomapi.c jcparam.c \
+    jcphuff.c jcprepct.c jcsample.c jctrans.c jdapimin.c jdapistd.c \
+    jdatadst.c jdatasrc.c jdcoefct.c  jdcolor.c jddctmgr.c jdhuff.c \
+    jdinput.c jdmainct.c jdmarker.c jdmaster.c jdmerge.c jdphuff.c \
+    jdpostct.c jdsample.c jdtrans.c jerror.c jfdctflt.c jfdctfst.c \
+    jfdctint.c jidctflt.c jidctfst.c jidctint.c jidctred.c jmemmgr.c \
+    jmemnobs.c jquant1.c jquant2.c jutils.c
+
+# ARM v7 NEON
+LOCAL_SRC_FILES_arm += simd/jsimd_arm_neon.S simd/jsimd_arm.c
+
+# If we are certain that the ARM v7 device has NEON (and there is no need for
+# a runtime check), we can indicate that with a flag.
+ifeq ($(strip $(TARGET_ARCH)),arm)
+  ifeq ($(ARCH_ARM_HAVE_NEON),true)
+    LOCAL_CFLAGS += -D__ARM_HAVE_NEON__
+  endif
+endif
+
+# ARM v8 64-bit NEON
+LOCAL_SRC_FILES_arm64 += simd/jsimd_arm64_neon.S simd/jsimd_arm64.c
+
+# x86 MMX and SSE2
+LOCAL_SRC_FILES_x86 += \
+      simd/jsimd_i386.c simd/jccolor-mmx.asm simd/jccolor-sse2.asm \
+      simd/jcgray-mmx.asm  simd/jcgray-sse2.asm simd/jcsample-mmx.asm \
+      simd/jcsample-sse2.asm simd/jdcolor-mmx.asm simd/jdcolor-sse2.asm \
+      simd/jdmerge-mmx.asm simd/jdmerge-sse2.asm simd/jdsample-mmx.asm \
+      simd/jdsample-sse2.asm simd/jfdctflt-3dn.asm simd/jfdctflt-sse.asm \
+      simd/jfdctfst-mmx.asm simd/jfdctfst-sse2.asm simd/jfdctint-mmx.asm \
+      simd/jfdctint-sse2.asm simd/jidctflt-3dn.asm simd/jidctflt-sse2.asm \
+      simd/jidctflt-sse.asm simd/jidctfst-mmx.asm simd/jidctfst-sse2.asm \
+      simd/jidctint-mmx.asm simd/jidctint-sse2.asm simd/jidctred-mmx.asm \
+      simd/jidctred-sse2.asm simd/jquant-3dn.asm simd/jquantf-sse2.asm \
+      simd/jquanti-sse2.asm simd/jquant-mmx.asm simd/jquant-sse.asm \
+      simd/jsimdcpu.asm
+LOCAL_ASFLAGS_x86 += -DPIC -DELF
+LOCAL_C_INCLUDES_x86 += $(LOCAL_PATH)/simd
+
+# x86-64 SSE2
+LOCAL_SRC_FILES_x86_64 += \
+      simd/jsimd_x86_64.c simd/jccolor-sse2-64.asm simd/jcgray-sse2-64.asm \
+      simd/jcsample-sse2-64.asm simd/jdcolor-sse2-64.asm \
+      simd/jdmerge-sse2-64.asm simd/jdsample-sse2-64.asm \
+      simd/jfdctflt-sse-64.asm simd/jfdctfst-sse2-64.asm \
+      simd/jfdctint-sse2-64.asm simd/jidctflt-sse2-64.asm \
+      simd/jidctfst-sse2-64.asm simd/jidctint-sse2-64.asm \
+      simd/jidctred-sse2-64.asm simd/jquantf-sse2-64.asm \
+      simd/jquanti-sse2-64.asm
+LOCAL_ASFLAGS_x86_64 += -D__x86_64__ -DPIC -DELF
+LOCAL_C_INCLUDES_x86_64 += $(LOCAL_PATH)/simd
+
+LOCAL_SRC_FILES_mips += jsimd_none.c
+LOCAL_SRC_FILES_mips64 += jsimd_none.c
+
+LOCAL_CFLAGS += -O3 -fstrict-aliasing
+LOCAL_CFLAGS += -Wno-unused-parameter
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
+
+LOCAL_SDK_VERSION := 17
+
+# Build as a static library.
+LOCAL_MODULE := libjpeg_static_ndk
+include $(BUILD_STATIC_LIBRARY)
-- 
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