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# Ignore this file during non-NDK builds. 12ifdef NDK_ROOT 13# 14# This file is to be used for compiling libvpx for Android using the NDK. 15# In an Android project place a libvpx checkout in the jni directory. 16# Run the configure script from the jni directory. Base libvpx 17# encoder/decoder configuration will look similar to: 18# ./libvpx/configure --target=arm64-android-gcc --disable-examples \ 19# --enable-external-build 20# 21# This will create .mk files that contain variables that contain the 22# source files to compile. 23# 24# Place an Android.mk file in the jni directory that references the 25# Android.mk file in the libvpx directory: 26# LOCAL_PATH := $(call my-dir) 27# include $(CLEAR_VARS) 28# include jni/libvpx/build/make/Android.mk 29# 30# By default libvpx will use the 'cpufeatures' module from the NDK. This allows 31# the library to be built with all available optimizations (SSE2->AVX512 for 32# x86, NEON for arm, DSPr2 for mips). This can be disabled with 33# --disable-runtime-cpu-detect 34# but the resulting library *must* be run on devices supporting all of the 35# enabled extensions. They can be disabled individually with 36# --disable-{sse2, sse3, ssse3, sse4_1, avx, avx2, avx512} 37# --disable-neon{, -asm, -neon-dotprod, -neon-i8mm} 38# --disable-sve 39# --disable-{dspr2, msa} 40 41# 42# Running ndk-build will build libvpx and include it in your project. Set 43# APP_ABI to match the --target passed to configure: 44# https://developer.android.com/ndk/guides/application_mk#app_abi. 45# 46 47CONFIG_DIR := $(LOCAL_PATH)/ 48LIBVPX_PATH := $(LOCAL_PATH)/libvpx 49ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas 50ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL) 51ifneq ($(V),1) 52 qexec := @ 53endif 54 55# Use the makefiles generated by upstream configure to determine which files to 56# build. Also set any architecture-specific flags. 57ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 58 include $(CONFIG_DIR)libs-armv7-android-gcc.mk 59 LOCAL_ARM_MODE := arm 60else ifeq ($(TARGET_ARCH_ABI),arm64-v8a) 61 include $(CONFIG_DIR)libs-arm64-android-gcc.mk 62 LOCAL_ARM_MODE := arm 63else ifeq ($(TARGET_ARCH_ABI),x86) 64 include $(CONFIG_DIR)libs-x86-android-gcc.mk 65else ifeq ($(TARGET_ARCH_ABI),x86_64) 66 include $(CONFIG_DIR)libs-x86_64-android-gcc.mk 67else ifeq ($(TARGET_ARCH_ABI),mips) 68 include $(CONFIG_DIR)libs-mips-android-gcc.mk 69else 70 $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI)) 71endif 72 73# Rule that is normally in Makefile created by libvpx 74# configure. Used to filter out source files based on configuration. 75enabled=$(filter-out $($(1)-no),$($(1)-yes)) 76 77# Override the relative path that is defined by the libvpx 78# configure process 79SRC_PATH_BARE := $(LIBVPX_PATH) 80 81# Include the list of files to be built 82include $(LIBVPX_PATH)/libs.mk 83 84# Optimise the code. May want to revisit this setting in the future. 85LOCAL_CFLAGS := -O3 86 87# For x86, include the source code in the search path so it will find files 88# like x86inc.asm and x86_abi_support.asm 89LOCAL_ASMFLAGS := -I$(LIBVPX_PATH) 90 91.PRECIOUS: %.asm.S 92$(ASM_CNV_PATH)/libvpx/%.asm.S: $(LIBVPX_PATH)/%.asm 93 $(qexec)mkdir -p $(dir $@) 94 $(qexec)$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@ 95 96# For building *_rtcd.h, which have rules in libs.mk 97TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN))) 98target := libs 99 100LOCAL_SRC_FILES += vpx_config.c 101 102# Remove duplicate entries 103CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS)) 104 105# Pull out C files. vpx_config.c is in the immediate directory and 106# so it does not need libvpx/ prefixed like the rest of the source files. 107# The neon files with intrinsics need to have .neon appended so the proper 108# flags are applied. 109CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE)) 110LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C)) 111LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c %_neon.c, $(CODEC_SRCS_C)) 112 113LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file)) 114ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 115 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file).neon) 116else # If there are neon sources then we are building for arm64 and do not need to specify .neon 117 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file)) 118endif 119 120# Pull out assembly files, splitting NEON from the rest. This is 121# done to specify that the NEON assembly files use NEON assembler flags. 122# x86 assembly matches %.asm, arm matches %.asm.S 123 124# x86: 125 126CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE)) 127LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libvpx/$(file)) 128 129# arm: 130CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.S, $(CODEC_SRCS_UNIQUE)) 131CODEC_SRCS_ASM_ARM = $(foreach v, \ 132 $(CODEC_SRCS_ASM_ARM_ALL), \ 133 $(if $(findstring neon,$(v)),,$(v))) 134CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.S, \ 135 $(ASM_CNV_PATH_LOCAL)/libvpx/%.S, \ 136 $(CODEC_SRCS_ASM_ARM)) 137LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS) 138 139ifeq ($(TARGET_ARCH_ABI),armeabi-v7a) 140 ASM_INCLUDES := vpx_dsp/arm/idct_neon.asm.S 141 CODEC_SRCS_ASM_NEON = $(foreach v, \ 142 $(CODEC_SRCS_ASM_ARM_ALL),\ 143 $(if $(findstring neon,$(v)),$(v),)) 144 CODEC_SRCS_ASM_NEON := $(filter-out $(addprefix %, $(ASM_INCLUDES)), \ 145 $(CODEC_SRCS_ASM_NEON)) 146 CODEC_SRCS_ASM_NEON_ADS2GAS = $(patsubst %.S, \ 147 $(ASM_CNV_PATH_LOCAL)/libvpx/%.S, \ 148 $(CODEC_SRCS_ASM_NEON)) 149 LOCAL_SRC_FILES += $(patsubst %.S, \ 150 %.S.neon, \ 151 $(CODEC_SRCS_ASM_NEON_ADS2GAS)) 152 153 NEON_ASM_TARGETS = $(patsubst %.S, \ 154 $(ASM_CNV_PATH)/libvpx/%.S, \ 155 $(CODEC_SRCS_ASM_NEON)) 156# add a dependency to the full path to the ads2gas output to ensure the 157# includes are converted first. 158ifneq ($(strip $(NEON_ASM_TARGETS)),) 159$(NEON_ASM_TARGETS): $(addprefix $(ASM_CNV_PATH)/libvpx/, $(ASM_INCLUDES)) 160endif 161endif 162 163LOCAL_CFLAGS += \ 164 -DHAVE_CONFIG_H=vpx_config.h \ 165 -I$(LIBVPX_PATH) \ 166 -I$(ASM_CNV_PATH) \ 167 -I$(ASM_CNV_PATH)/libvpx 168 169LOCAL_MODULE := libvpx 170LOCAL_LICENSE_KINDS := SPDX-license-identifier-BSD 171LOCAL_LICENSE_CONDITIONS := notice 172LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../LICENSE $(LOCAL_PATH)/../../PATENTS 173 174ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 175 LOCAL_STATIC_LIBRARIES := cpufeatures 176endif 177 178# Add a dependency to force generation of the RTCD files. 179define rtcd_dep_template 180rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES)) 181rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=) 182ifeq ($(CONFIG_VP8), yes) 183$$(rtcd_dep_template_SRCS): vp8_rtcd.h 184endif 185ifeq ($(CONFIG_VP9), yes) 186$$(rtcd_dep_template_SRCS): vp9_rtcd.h 187endif 188$$(rtcd_dep_template_SRCS): vpx_scale_rtcd.h 189$$(rtcd_dep_template_SRCS): vpx_dsp_rtcd.h 190 191rtcd_dep_template_CONFIG_ASM_ABIS := x86 x86_64 armeabi-v7a 192ifneq ($$(findstring $(TARGET_ARCH_ABI),$$(rtcd_dep_template_CONFIG_ASM_ABIS)),) 193$$(rtcd_dep_template_SRCS): vpx_config.asm 194endif 195endef 196 197$(eval $(call rtcd_dep_template)) 198 199.PHONY: clean 200clean: 201 @echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]" 202 $(qexec)$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS) 203 $(qexec)$(RM) -r $(ASM_CNV_PATH) 204 $(qexec)$(RM) $(CLEAN-OBJS) 205 206ifeq ($(ENABLE_SHARED),1) 207 LOCAL_CFLAGS += -fPIC 208 include $(BUILD_SHARED_LIBRARY) 209else 210 include $(BUILD_STATIC_LIBRARY) 211endif 212 213ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes) 214$(call import-module,android/cpufeatures) 215endif 216endif # NDK_ROOT 217