2 ## Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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.
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/
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
23 # This will create .mk files that contain variables that contain the
24 # source files to compile.
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
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
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 \
43 # will remove any NEON dependency.
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
49 # Running ndk-build will build libvpx and include it in your project.
52 CONFIG_DIR := $(LOCAL_PATH)/
53 LIBVPX_PATH := $(LOCAL_PATH)/libvpx
54 ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas
55 ASM_CNV_PATH := $(LOCAL_PATH)/$(ASM_CNV_PATH_LOCAL)
57 # Use the makefiles generated by upstream configure to determine which files to
58 # build. Also set any architecture-specific flags.
59 ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
60 include $(CONFIG_DIR)libs-armv7-android-gcc.mk
62 else ifeq ($(TARGET_ARCH_ABI),armeabi)
63 include $(CONFIG_DIR)libs-armv6-android-gcc.mk
65 else ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
66 include $(CONFIG_DIR)libs-armv8-android-gcc.mk
68 else ifeq ($(TARGET_ARCH_ABI),x86)
69 include $(CONFIG_DIR)libs-x86-android-gcc.mk
70 else ifeq ($(TARGET_ARCH_ABI),x86_64)
71 include $(CONFIG_DIR)libs-x86_64-android-gcc.mk
72 else ifeq ($(TARGET_ARCH_ABI),mips)
73 include $(CONFIG_DIR)libs-mips-android-gcc.mk
75 $(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI))
78 # Rule that is normally in Makefile created by libvpx
79 # configure. Used to filter out source files based on configuration.
80 enabled=$(filter-out $($(1)-no),$($(1)-yes))
82 # Override the relative path that is defined by the libvpx
84 SRC_PATH_BARE := $(LIBVPX_PATH)
86 # Include the list of files to be built
87 include $(LIBVPX_PATH)/libs.mk
89 # Optimise the code. May want to revisit this setting in the future.
92 # For x86, include the source code in the search path so it will find files
93 # like x86inc.asm and x86_abi_support.asm
94 LOCAL_ASMFLAGS := -I$(LIBVPX_PATH)
97 $(ASM_CNV_PATH)/libvpx/%.asm.s: $(LIBVPX_PATH)/%.asm
99 @$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@
101 # For building *_rtcd.h, which have rules in libs.mk
102 TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
105 LOCAL_SRC_FILES += vpx_config.c
107 # Remove duplicate entries
108 CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS))
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
114 CODEC_SRCS_C = $(filter %.c, $(CODEC_SRCS_UNIQUE))
115 LOCAL_NEON_SRCS_C = $(filter %_neon.c, $(CODEC_SRCS_C))
116 LOCAL_CODEC_SRCS_C = $(filter-out vpx_config.c %_neon.c, $(CODEC_SRCS_C))
118 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libvpx/$(file))
119 ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
120 LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libvpx/$(file).neon)
121 else # 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))
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
131 CODEC_SRCS_ASM_X86 = $(filter %.asm, $(CODEC_SRCS_UNIQUE))
132 LOCAL_SRC_FILES += $(foreach file, $(CODEC_SRCS_ASM_X86), libvpx/$(file))
135 CODEC_SRCS_ASM_ARM_ALL = $(filter %.asm.s, $(CODEC_SRCS_UNIQUE))
136 CODEC_SRCS_ASM_ARM = $(foreach v, \
137 $(CODEC_SRCS_ASM_ARM_ALL), \
138 $(if $(findstring neon,$(v)),,$(v)))
139 CODEC_SRCS_ASM_ADS2GAS = $(patsubst %.s, \
140 $(ASM_CNV_PATH_LOCAL)/libvpx/%.s, \
141 $(CODEC_SRCS_ASM_ARM))
142 LOCAL_SRC_FILES += $(CODEC_SRCS_ASM_ADS2GAS)
144 ifeq ($(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, \
153 $(CODEC_SRCS_ASM_NEON_ADS2GAS))
157 -DHAVE_CONFIG_H=vpx_config.h \
161 LOCAL_MODULE := libvpx
163 ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
164 LOCAL_STATIC_LIBRARIES := cpufeatures
167 # Add a dependency to force generation of the RTCD files.
168 define rtcd_dep_template
169 rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES))
170 rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=)
171 ifeq ($(CONFIG_VP8), yes)
172 $$(rtcd_dep_template_SRCS): vp8_rtcd.h
174 ifeq ($(CONFIG_VP9), yes)
175 $$(rtcd_dep_template_SRCS): vp9_rtcd.h
177 ifeq ($(CONFIG_VP10), yes)
178 $$(rtcd_dep_template_SRCS): vp10_rtcd.h
180 $$(rtcd_dep_template_SRCS): vpx_scale_rtcd.h
181 $$(rtcd_dep_template_SRCS): vpx_dsp_rtcd.h
183 ifneq ($(findstring $(TARGET_ARCH_ABI),x86 x86_64),)
184 $$(rtcd_dep_template_SRCS): vpx_config.asm
188 $(eval $(call rtcd_dep_template))
192 @echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]"
193 @$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS)
194 @$(RM) -r $(ASM_CNV_PATH)
197 ifeq ($(ENABLE_SHARED),1)
198 include $(BUILD_SHARED_LIBRARY)
200 include $(BUILD_STATIC_LIBRARY)
203 ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
204 $(call import-module,cpufeatures)