1## 2## Copyright (c) 2012 The WebM project authors. All Rights Reserved. 3## 4## Use of this source code is governed by a BSD-style license 5## that can be found in the LICENSE file in the root of the source 6## tree. An additional intellectual property rights grant can be found 7## in the file PATENTS. All contributing project authors may 8## be found in the AUTHORS file in the root of the source tree. 9## 10 11# 12# This file is to be used for compiling libvpx for Android using the NDK. 13# In an Android project place a libvpx checkout in the jni directory. 14# Run the configure script from the jni directory. Base libvpx 15# encoder/decoder configuration will look similar to: 16# ./libvpx/configure --target=armv7-android-gcc --disable-examples \ 17# --sdk-path=/opt/android-ndk-r6b/ 18# 19# When targeting Android, realtime-only is enabled by default. This can 20# be overridden by adding the command line flag: 21# --disable-realtime-only 22# 23# This will create .mk files that contain variables that contain the 24# source files to compile. 25# 26# Place an Android.mk file in the jni directory that references the 27# Android.mk file in the libvpx directory: 28# LOCAL_PATH := $(call my-dir) 29# include $(CLEAR_VARS) 30# include jni/libvpx/build/make/Android.mk 31# 32# There are currently two TARGET_ARCH_ABI targets for ARM. 33# armeabi and armeabi-v7a. armeabi-v7a is selected by creating an 34# Application.mk in the jni directory that contains: 35# APP_ABI := armeabi-v7a 36# 37# By default libvpx will detect at runtime the existance of NEON extension. 38# For this we import the 'cpufeatures' module from the NDK sources. 39# libvpx can also be configured without this runtime detection method. 40# Configuring with --disable-runtime-cpu-detect will assume presence of NEON. 41# Configuring with --disable-runtime-cpu-detect --disable-neon \ 42# --disable-neon-asm 43# will remove any NEON dependency. 44 45# To change to building armeabi, run ./libvpx/configure again, but with 46# --target=armv6-android-gcc and modify the Application.mk file to 47# set APP_ABI := armeabi 48# 49# Running ndk-build will build libvpx and include it in your project. 50# 51 52CONFIG_DIR := $(LOCAL_PATH)/ 53LIBVPX_PATH := $(LOCAL_PATH)/libvpx 54ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas 55ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL) 56 57# Use the makefiles generated by upstream configure to determine which files to 58# build. Also set any architecture-specific flags. 59ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 60 include $(CONFIG_DIR)libs-armv7-android-gcc.mk 61 LOCAL_ARM_MODE := arm 62else ifeq ($(TARGET_ARCH_ABI),armeabi) 63 include $(CONFIG_DIR)libs-armv6-android-gcc.mk 64 LOCAL_ARM_MODE := arm 65else ifeq ($(TARGET_ARCH_ABI),arm64-v8a) 66 include $(CONFIG_DIR)libs-armv8-android-gcc.mk 67 LOCAL_ARM_MODE := arm 68else ifeq ($(TARGET_ARCH_ABI),x86) 69 include $(CONFIG_DIR)libs-x86-android-gcc.mk 70else ifeq ($(TARGET_ARCH_ABI),x86_64) 71 include $(CONFIG_DIR)libs-x86_64-android-gcc.mk 72else ifeq ($(TARGET_ARCH_ABI),mips) 73 include $(CONFIG_DIR)libs-mips-android-gcc.mk 74else 75 $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI)) 76endif 77 78# Rule that is normally in Makefile created by libvpx 79# configure. Used to filter out source files based on configuration. 80enabled=$(filter-out $($(1)-no),$($(1)-yes)) 81 82# Override the relative path that is defined by the libvpx 83# configure process 84SRC_PATH_BARE := $(LIBVPX_PATH) 85 86# Include the list of files to be built 87include $(LIBVPX_PATH)/libs.mk 88 89# Optimise the code. May want to revisit this setting in the future. 90LOCAL_CFLAGS := -O3 91 92# For x86, include the source code in the search path so it will find files 93# like x86inc.asm and x86_abi_support.asm 94LOCAL_ASMFLAGS := -I$(LIBVPX_PATH) 95 96.PRECIOUS: %.asm.s 97$(ASM_CNV_PATH)/libvpx/%.asm.s: $(LIBVPX_PATH)/%.asm 98 @mkdir -p $(dir $@) 99 @$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@ 100 101# For building *_rtcd.h, which have rules in libs.mk 102TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN))) 103target := libs 104 105LOCAL_SRC_FILES += vpx_config.c 106 107# Remove duplicate entries 108CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS)) 109 110# Pull out C files. vpx_config.c is in the immediate directory and 111# so it does not need libvpx/ prefixed like the rest of the source files. 112# The neon files with intrinsics need to have .neon appended so the proper 113# flags are applied. 114CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE)) 115LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C)) 116LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c %_neon.c, $(CODEC_SRCS_C)) 117 118LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file)) 119ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 120 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file).neon) 121else # If there are neon sources then we are building for arm64 and do not need to specify .neon 122 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file)) 123endif 124 125# Pull out assembly files, splitting NEON from the rest. This is 126# done to specify that the NEON assembly files use NEON assembler flags. 127# x86 assembly matches %.asm, arm matches %.asm.s 128 129# x86: 130 131CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE)) 132LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libvpx/$(file)) 133 134# arm: 135CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.s, $(CODEC_SRCS_UNIQUE)) 136CODEC_SRCS_ASM_ARM = $(foreach v, \ 137 $(CODEC_SRCS_ASM_ARM_ALL), \ 138 $(if $(findstring neon,$(v)),,$(v))) 139CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.s, \ 140 $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \ 141 $(CODEC_SRCS_ASM_ARM)) 142LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS) 143 144ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 145 CODEC_SRCS_ASM_NEON = $(foreach v, \ 146 $(CODEC_SRCS_ASM_ARM_ALL),\ 147 $(if $(findstring neon,$(v)),$(v),)) 148 CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.s, \ 149 $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \ 150 $(CODEC_SRCS_ASM_NEON)) 151 LOCAL_SRC_FILES += $(patsubst %.s, \ 152 %.s.neon, \ 153 $(CODEC_SRCS_ASM_NEON_ADS2GAS)) 154endif 155 156LOCAL_CFLAGS += \ 157 -DHAVE_CONFIG_H=vpx_config.h \ 158 -I$(LIBVPX_PATH) \ 159 -I$(ASM_CNV_PATH) 160 161LOCAL_MODULE := libvpx 162 163ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 164 LOCAL_STATIC_LIBRARIES := cpufeatures 165endif 166 167# Add a dependency to force generation of the RTCD files. 168define rtcd_dep_template 169rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES)) 170rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=) 171ifeq ($(CONFIG_VP8), yes) 172$$(rtcd_dep_template_SRCS): vp8_rtcd.h 173endif 174ifeq ($(CONFIG_VP9), yes) 175$$(rtcd_dep_template_SRCS): vp9_rtcd.h 176endif 177ifeq ($(CONFIG_VP10), yes) 178$$(rtcd_dep_template_SRCS): vp10_rtcd.h 179endif 180$$(rtcd_dep_template_SRCS): vpx_scale_rtcd.h 181$$(rtcd_dep_template_SRCS): vpx_dsp_rtcd.h 182 183ifneq ($(findstring $(TARGET_ARCH_ABI),x86 x86_64),) 184$$(rtcd_dep_template_SRCS): vpx_config.asm 185endif 186endef 187 188$(eval $(call rtcd_dep_template)) 189 190.PHONY: clean 191clean: 192 @echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]" 193 @$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS) 194 @$(RM) -r $(ASM_CNV_PATH) 195 @$(RM) $(CLEAN-OBJS) 196 197ifeq ($(ENABLE_SHARED),1) 198 include $(BUILD_SHARED_LIBRARY) 199else 200 include $(BUILD_STATIC_LIBRARY) 201endif 202 203ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 204$(call import-module,cpufeatures) 205endif 206