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# --enable-external-build 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# By default libvpx will use the 'cpufeatures' module from the NDK. This allows 33# the library to be built with all available optimizations (SSE2->AVX512 for 34# x86, NEON for arm, DSPr2 for mips). This can be disabled with 35# --disable-runtime-cpu-detect 36# but the resulting library *must* be run on devices supporting all of the 37# enabled extensions. They can be disabled individually with 38# --disable-{sse2, sse3, ssse3, sse4_1, avx, avx2, avx512} 39# --disable-neon[-asm] 40# --disable-{dspr2, msa} 41 42# 43# Running ndk-build will build libvpx and include it in your project. 44# 45 46CONFIG_DIR := $(LOCAL_PATH)/ 47LIBVPX_PATH := $(LOCAL_PATH)/libvpx 48ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas 49ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL) 50ifneq ($(V),1) 51 qexec := @ 52endif 53 54# Use the makefiles generated by upstream configure to determine which files to 55# build. Also set any architecture-specific flags. 56ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 57 include $(CONFIG_DIR)libs-armv7-android-gcc.mk 58 LOCAL_ARM_MODE := arm 59else ifeq ($(TARGET_ARCH_ABI),arm64-v8a) 60 include $(CONFIG_DIR)libs-arm64-android-gcc.mk 61 LOCAL_ARM_MODE := arm 62else ifeq ($(TARGET_ARCH_ABI),x86) 63 include $(CONFIG_DIR)libs-x86-android-gcc.mk 64else ifeq ($(TARGET_ARCH_ABI),x86_64) 65 include $(CONFIG_DIR)libs-x86_64-android-gcc.mk 66else ifeq ($(TARGET_ARCH_ABI),mips) 67 include $(CONFIG_DIR)libs-mips-android-gcc.mk 68else 69 $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI)) 70endif 71 72# Rule that is normally in Makefile created by libvpx 73# configure. Used to filter out source files based on configuration. 74enabled=$(filter-out $($(1)-no),$($(1)-yes)) 75 76# Override the relative path that is defined by the libvpx 77# configure process 78SRC_PATH_BARE := $(LIBVPX_PATH) 79 80# Include the list of files to be built 81include $(LIBVPX_PATH)/libs.mk 82 83# Optimise the code. May want to revisit this setting in the future. 84LOCAL_CFLAGS := -O3 85 86# For x86, include the source code in the search path so it will find files 87# like x86inc.asm and x86_abi_support.asm 88LOCAL_ASMFLAGS := -I$(LIBVPX_PATH) 89 90.PRECIOUS: %.asm.S 91$(ASM_CNV_PATH)/libvpx/%.asm.S: $(LIBVPX_PATH)/%.asm 92 $(qexec)mkdir -p $(dir $@) 93 $(qexec)$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@ 94 95# For building *_rtcd.h, which have rules in libs.mk 96TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN))) 97target := libs 98 99LOCAL_SRC_FILES += vpx_config.c 100 101# Remove duplicate entries 102CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS)) 103 104# Pull out C files. vpx_config.c is in the immediate directory and 105# so it does not need libvpx/ prefixed like the rest of the source files. 106# The neon files with intrinsics need to have .neon appended so the proper 107# flags are applied. 108CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE)) 109LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C)) 110LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c %_neon.c, $(CODEC_SRCS_C)) 111 112LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file)) 113ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 114 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file).neon) 115else # If there are neon sources then we are building for arm64 and do not need to specify .neon 116 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file)) 117endif 118 119# Pull out assembly files, splitting NEON from the rest. This is 120# done to specify that the NEON assembly files use NEON assembler flags. 121# x86 assembly matches %.asm, arm matches %.asm.S 122 123# x86: 124 125CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE)) 126LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libvpx/$(file)) 127 128# arm: 129CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.S, $(CODEC_SRCS_UNIQUE)) 130CODEC_SRCS_ASM_ARM = $(foreach v, \ 131 $(CODEC_SRCS_ASM_ARM_ALL), \ 132 $(if $(findstring neon,$(v)),,$(v))) 133CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.S, \ 134 $(ASM_CNV_PATH_LOCAL)/libvpx/%.S, \ 135 $(CODEC_SRCS_ASM_ARM)) 136LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS) 137 138ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 139 ASM_INCLUDES := vpx_dsp/arm/idct_neon.asm.S 140 CODEC_SRCS_ASM_NEON = $(foreach v, \ 141 $(CODEC_SRCS_ASM_ARM_ALL),\ 142 $(if $(findstring neon,$(v)),$(v),)) 143 CODEC_SRCS_ASM_NEON := $(filter-out $(addprefix %, $(ASM_INCLUDES)), \ 144 $(CODEC_SRCS_ASM_NEON)) 145 CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.S, \ 146 $(ASM_CNV_PATH_LOCAL)/libvpx/%.S, \ 147 $(CODEC_SRCS_ASM_NEON)) 148 LOCAL_SRC_FILES += $(patsubst %.S, \ 149 %.S.neon, \ 150 $(CODEC_SRCS_ASM_NEON_ADS2GAS)) 151 152 NEON_ASM_TARGETS = $(patsubst %.S, \ 153 $(ASM_CNV_PATH)/libvpx/%.S, \ 154 $(CODEC_SRCS_ASM_NEON)) 155# add a dependency to the full path to the ads2gas output to ensure the 156# includes are converted first. 157ifneq ($(strip $(NEON_ASM_TARGETS)),) 158$(NEON_ASM_TARGETS): $(addprefix $(ASM_CNV_PATH)/libvpx/, $(ASM_INCLUDES)) 159endif 160endif 161 162LOCAL_CFLAGS += \ 163 -DHAVE_CONFIG_H=vpx_config.h \ 164 -I$(LIBVPX_PATH) \ 165 -I$(ASM_CNV_PATH) \ 166 -I$(ASM_CNV_PATH)/libvpx 167 168LOCAL_MODULE := libvpx 169LOCAL_LICENSE_KINDS := SPDX-license-identifier-BSD 170LOCAL_LICENSE_CONDITIONS := notice 171LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../LICENSE $(LOCAL_PATH)/../../PATENTS 172 173ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 174 LOCAL_STATIC_LIBRARIES := cpufeatures 175endif 176 177# Add a dependency to force generation of the RTCD files. 178define rtcd_dep_template 179rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES)) 180rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=) 181ifeq ($(CONFIG_VP8), yes) 182$$(rtcd_dep_template_SRCS): vp8_rtcd.h 183endif 184ifeq ($(CONFIG_VP9), yes) 185$$(rtcd_dep_template_SRCS): vp9_rtcd.h 186endif 187$$(rtcd_dep_template_SRCS): vpx_scale_rtcd.h 188$$(rtcd_dep_template_SRCS): vpx_dsp_rtcd.h 189 190rtcd_dep_template_CONFIG_ASM_ABIS := x86 x86_64 armeabi-v7a 191ifneq ($$(findstring $(TARGET_ARCH_ABI),$$(rtcd_dep_template_CONFIG_ASM_ABIS)),) 192$$(rtcd_dep_template_SRCS): vpx_config.asm 193endif 194endef 195 196$(eval $(call rtcd_dep_template)) 197 198.PHONY: clean 199clean: 200 @echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]" 201 $(qexec)$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS) 202 $(qexec)$(RM) -r $(ASM_CNV_PATH) 203 $(qexec)$(RM) $(CLEAN-OBJS) 204 205ifeq ($(ENABLE_SHARED),1) 206 LOCAL_CFLAGS += -fPIC 207 include $(BUILD_SHARED_LIBRARY) 208else 209 include $(BUILD_STATIC_LIBRARY) 210endif 211 212ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 213$(call import-module,android/cpufeatures) 214endif 215