####  Copyright (c) 2012 The WebM project authors. All Rights Reserved.####  Use of this source code is governed by a BSD-style license##  that can be found in the LICENSE file in the root of the source##  tree. An additional intellectual property rights grant can be found##  in the file PATENTS.  All contributing project authors may##  be found in the AUTHORS file in the root of the source tree.## ## This file is to be used for compiling libvpx for Android using the NDK.# In an Android project place a libvpx checkout in the jni directory.# Run the configure script from the jni directory.  Base libvpx# encoder/decoder configuration will look similar to:# ./libvpx/configure --target=armv7-android-gcc --disable-examples \#                    --sdk-path=/opt/android-ndk-r6b/## When targeting Android, realtime-only is enabled by default.  This can# be overridden by adding the command line flag:#  --disable-realtime-only## This will create .mk files that contain variables that contain the# source files to compile.## Place an Android.mk file in the jni directory that references the# Android.mk file in the libvpx directory:# LOCAL_PATH := $(call my-dir)# include $(CLEAR_VARS)# include jni/libvpx/build/make/Android.mk## There are currently two TARGET_ARCH_ABI targets for ARM.# armeabi and armeabi-v7a.  armeabi-v7a is selected by creating an# Application.mk in the jni directory that contains:# APP_ABI := armeabi-v7a## By default libvpx will detect at runtime the existance of NEON extension.# For this we import the 'cpufeatures' module from the NDK sources.# libvpx can also be configured without this runtime detection method.# Configuring with --disable-runtime-cpu-detect will assume presence of NEON.# Configuring with --disable-runtime-cpu-detect --disable-neon \#     --disable-neon-asm# will remove any NEON dependency. # To change to building armeabi, run ./libvpx/configure again, but with# --target=armv6-android-gcc and modify the Application.mk file to# set APP_ABI := armeabi## Running ndk-build will build libvpx and include it in your project.# CONFIG_DIR := $(LOCAL_PATH)/LIBVPX_PATH := $(LOCAL_PATH)/libvpxASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gasASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL) # Use the makefiles generated by upstream configure to determine which files to# build. Also set any architecture-specific flags.ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)  include $(CONFIG_DIR)libs-armv7-android-gcc.mk  LOCAL_ARM_MODE := armelse ifeq  ($(TARGET_ARCH_ABI),armeabi)  include $(CONFIG_DIR)libs-armv6-android-gcc.mk  LOCAL_ARM_MODE := armelse ifeq  ($(TARGET_ARCH_ABI),arm64-v8a)  include $(CONFIG_DIR)libs-armv8-android-gcc.mk  LOCAL_ARM_MODE := armelse ifeq ($(TARGET_ARCH_ABI),x86)  include $(CONFIG_DIR)libs-x86-android-gcc.mkelse ifeq ($(TARGET_ARCH_ABI),mips)  include $(CONFIG_DIR)libs-mips-android-gcc.mkelse  $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI))endif # Rule that is normally in Makefile created by libvpx# configure.  Used to filter out source files based on configuration.enabled=$(filter-out $($(1)-no),$($(1)-yes)) # Override the relative path that is defined by the libvpx# configure processSRC_PATH_BARE := $(LIBVPX_PATH) # Include the list of files to be builtinclude $(LIBVPX_PATH)/libs.mk # Optimise the code. May want to revisit this setting in the future.LOCAL_CFLAGS := -O3 # For x86, include the source code in the search path so it will find files# like x86inc.asm and x86_abi_support.asmLOCAL_ASMFLAGS := -I$(LIBVPX_PATH) .PRECIOUS: %.asm.s$(ASM_CNV_PATH)/libvpx/%.asm.s: $(LIBVPX_PATH)/%.asm	@mkdir -p $(dir $@)	@$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@ # For building *_rtcd.h, which have rules in libs.mkTGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))target := libs LOCAL_SRC_FILES += vpx_config.c # Remove duplicate entriesCODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS)) # Pull out C files.  vpx_config.c is in the immediate directory and# so it does not need libvpx/ prefixed like the rest of the source files.# The neon files with intrinsics need to have .neon appended so the proper# flags are applied.CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE))LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C))LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c %_neon.c, $(CODEC_SRCS_C)) LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file))ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)  LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file).neon)else # If there are neon sources then we are building for arm64 and do not need to specify .neon  LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file))endif # Pull out assembly files, splitting NEON from the rest.  This is# done to specify that the NEON assembly files use NEON assembler flags.# x86 assembly matches %.asm, arm matches %.asm.s # x86: CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE))LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libvpx/$(file)) # arm:CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.s, $(CODEC_SRCS_UNIQUE))CODEC_SRCS_ASM_ARM = $(foreach v, \                     $(CODEC_SRCS_ASM_ARM_ALL), \                     $(if $(findstring neon,$(v)),,$(v)))CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.s, \                         $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \                         $(CODEC_SRCS_ASM_ARM))LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS) ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)  CODEC_SRCS_ASM_NEON = $(foreach v, \                        $(CODEC_SRCS_ASM_ARM_ALL),\                        $(if $(findstring neon,$(v)),$(v),))  CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.s, \                                $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \                                $(CODEC_SRCS_ASM_NEON))  LOCAL_SRC_FILES += $(patsubst %.s, \                     %.s.neon, \                     $(CODEC_SRCS_ASM_NEON_ADS2GAS))endif LOCAL_CFLAGS += \    -DHAVE_CONFIG_H=vpx_config.h \    -I$(LIBVPX_PATH) \    -I$(ASM_CNV_PATH) LOCAL_MODULE := libvpx LOCAL_LDLIBS := -llog ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)  LOCAL_STATIC_LIBRARIES := cpufeaturesendif # Add a dependency to force generation of the RTCD files.ifeq ($(CONFIG_VP8), yes)$(foreach file, $(LOCAL_SRC_FILES), $(LOCAL_PATH)/$(file)): vp8_rtcd.hendififeq ($(CONFIG_VP9), yes)$(foreach file, $(LOCAL_SRC_FILES), $(LOCAL_PATH)/$(file)): vp9_rtcd.hendif$(foreach file, $(LOCAL_SRC_FILES), $(LOCAL_PATH)/$(file)): vpx_scale_rtcd.h ifeq ($(TARGET_ARCH_ABI),x86)$(foreach file, $(LOCAL_SRC_FILES), $(LOCAL_PATH)/$(file)): vpx_config.asmendif .PHONY: cleanclean:	@echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]"	@$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS)	@$(RM) -r $(ASM_CNV_PATH)	@$(RM) $(CLEAN-OBJS) include $(BUILD_SHARED_LIBRARY) ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)$(call import-module,cpufeatures)endif