1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
##
## Copyright (c) 2016, Alliance for Open Media. All rights reserved
##
## This source code is subject to the terms of the BSD 2 Clause License and
## the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
## was not distributed with this source code in the LICENSE file, you can
## obtain it at www.aomedia.org/license/software. If the Alliance for Open
## Media Patent License 1.0 was not distributed with this source code in the
## PATENTS file, you can obtain it at www.aomedia.org/license/patent.
##
#
# This file is to be used for compiling libaom for Android using the NDK.
# In an Android project place a libaom checkout in the jni directory.
# Run the configure script from the jni directory. Base libaom
# encoder/decoder configuration will look similar to:
# ./libaom/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 libaom directory:
# LOCAL_PATH := $(call my-dir)
# include $(CLEAR_VARS)
# include jni/libaom/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 libaom will detect at runtime the existance of NEON extension.
# For this we import the 'cpufeatures' module from the NDK sources.
# libaom 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.
#
# Running ndk-build will build libaom and include it in your project.
#
CONFIG_DIR := $(LOCAL_PATH)/
LIBAOM_PATH := $(LOCAL_PATH)/libaom
ASM_CNV_PATH_LOCAL := $(TARGET_ARCH_ABI)/ads2gas
ASM_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 $(CONFIG_DIR)libs-armv7-android-gcc.mk
LOCAL_ARM_MODE := arm
else ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
include $(CONFIG_DIR)libs-armv8-android-gcc.mk
LOCAL_ARM_MODE := arm
else ifeq ($(TARGET_ARCH_ABI),x86)
include $(CONFIG_DIR)libs-x86-android-gcc.mk
else ifeq ($(TARGET_ARCH_ABI),x86_64)
include $(CONFIG_DIR)libs-x86_64-android-gcc.mk
else ifeq ($(TARGET_ARCH_ABI),mips)
include $(CONFIG_DIR)libs-mips-android-gcc.mk
else
$(error Not a supported TARGET_ARCH_ABI: $(TARGET_ARCH_ABI))
endif
# Rule that is normally in Makefile created by libaom
# configure. Used to filter out source files based on configuration.
enabled=$(filter-out $($(1)-no),$($(1)-yes))
# Override the relative path that is defined by the libaom
# configure process
SRC_PATH_BARE := $(LIBAOM_PATH)
# Include the list of files to be built
include $(LIBAOM_PATH)/libs.mk
# Optimise the code. May want to revisit this setting in the future.
LOCAL_CFLAGS := -O3
# For x86, include the source code in the search path so it will find files
# like x86inc.asm and x86_abi_support.asm
LOCAL_ASMFLAGS := -I$(LIBAOM_PATH)
.PRECIOUS: %.asm.s
$(ASM_CNV_PATH)/libaom/%.asm.s: $(LIBAOM_PATH)/%.asm
@mkdir -p $(dir $@)
@$(CONFIG_DIR)$(ASM_CONVERSION) <$< > $@
# For building *_rtcd.h, which have rules in libs.mk
TGT_ISA:=$(word 1, $(subst -, ,$(TOOLCHAIN)))
target := libs
LOCAL_SRC_FILES += aom_config.c
# Remove duplicate entries
CODEC_SRCS_UNIQUE = $(sort $(CODEC_SRCS))
# Pull out C files. aom_config.c is in the immediate directory and
# so it does not need libaom/ 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 aom_config.c %_neon.c, $(CODEC_SRCS_C))
LOCAL_SRC_FILES += $(foreach file, $(LOCAL_CODEC_SRCS_C), libaom/$(file))
ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
LOCAL_SRC_FILES += $(foreach file, $(LOCAL_NEON_SRCS_C), libaom/$(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, $(LOCAL_NEON_SRCS_C), libaom/$(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, $(CODEC_SRCS_ASM_X86), libaom/$(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)/libaom/%.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)/libaom/%.s, \
$(CODEC_SRCS_ASM_NEON))
LOCAL_SRC_FILES += $(patsubst %.s, \
%.s.neon, \
$(CODEC_SRCS_ASM_NEON_ADS2GAS))
endif
LOCAL_CFLAGS += \
-DHAVE_CONFIG_H=aom_config.h \
-I$(LIBAOM_PATH) \
-I$(ASM_CNV_PATH)
LOCAL_MODULE := libaom
ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
LOCAL_STATIC_LIBRARIES := cpufeatures
endif
# Add a dependency to force generation of the RTCD files.
define rtcd_dep_template
rtcd_dep_template_SRCS := $(addprefix $(LOCAL_PATH)/, $(LOCAL_SRC_FILES))
rtcd_dep_template_SRCS := $$(rtcd_dep_template_SRCS:.neon=)
ifeq ($(CONFIG_AV1), yes)
$$(rtcd_dep_template_SRCS): av1_rtcd.h
endif
$$(rtcd_dep_template_SRCS): aom_scale_rtcd.h
$$(rtcd_dep_template_SRCS): aom_dsp_rtcd.h
ifneq ($(findstring $(TARGET_ARCH_ABI),x86 x86_64),)
$$(rtcd_dep_template_SRCS): aom_config.asm
endif
endef
$(eval $(call rtcd_dep_template))
.PHONY: clean
clean:
@echo "Clean: ads2gas files [$(TARGET_ARCH_ABI)]"
@$(RM) $(CODEC_SRCS_ASM_ADS2GAS) $(CODEC_SRCS_ASM_NEON_ADS2GAS)
@$(RM) -r $(ASM_CNV_PATH)
@$(RM) $(CLEAN-OBJS)
ifeq ($(ENABLE_SHARED),1)
include $(BUILD_SHARED_LIBRARY)
else
include $(BUILD_STATIC_LIBRARY)
endif
ifeq ($(CONFIG_RUNTIME_CPU_DETECT),yes)
$(call import-module,cpufeatures)
endif
|
