Opus-Android

admin · 发表于 2016-12-9 17:01:32

A build Android NDK script from: http://stackoverflow.com/questions/17869333/makefile-needed-for-compiling-the-opus-codec-for-android

Android.mk 放到源码目录下

<div>LOCAL_PATH := $(call my-dir)</div><div>include $(CLEAR_VARS)</div><div>MY_MODULE_DIR := opus</div><div>LOCAL_MODULE := $(MY_MODULE_DIR)
LOCAL_SRC_FILES := \
$(subst $(ROOT_DIR)/$(MY_MODULE_DIR)/,,$(wildcard $(ROOT_DIR)/$(MY_MODULE_DIR)/src/*.c*)) \
$(subst $(ROOT_DIR)/$(MY_MODULE_DIR)/,,$(wildcard $(ROOT_DIR)/$(MY_MODULE_DIR)/celt/*.c*)) \
$(subst $(ROOT_DIR)/$(MY_MODULE_DIR)/,,$(wildcard $(ROOT_DIR)/$(MY_MODULE_DIR)/silk/*.c*)) \
$(subst $(ROOT_DIR)/$(MY_MODULE_DIR)/,,$(wildcard $(ROOT_DIR)/$(MY_MODULE_DIR)/silk/fixed/*.c*))
LOCAL_LDLIBS := -lm -llog
LOCAL_C_INCLUDES := \
$(ROOT_DIR)/$(MY_MODULE_DIR)/include \
$(ROOT_DIR)/$(MY_MODULE_DIR)/silk \
$(ROOT_DIR)/$(MY_MODULE_DIR)/silk/fixed \
$(ROOT_DIR)/$(MY_MODULE_DIR)/celt
LOCAL_CFLAGS := -DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED -D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64
LOCAL_CFLAGS += -Drestrict='' -D__EMX__ -DOPUS_BUILD -DFIXED_POINT -DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -O3 -fno-math-errno
LOCAL_CPPFLAGS := -DBSD=1
LOCAL_CPPFLAGS += -ffast-math -O3 -funroll-loops</div><div>include $(BUILD_STATIC_LIBRARY)</div>

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Steps:

Download the opus source files into 'opus' directory. Opus version 1.1 works well: http://downloads.xiph.org/releases/opus/opus-1.1.tar.gz For latest version 1.1.1-beta, a build error happens in the next build step.
Build it using Android 'ndk-build' command:
ndk-build APP_BUILD_SCRIPT=Android.mk NDK_PROJECT_PATH=build
Find the built static library at 'build/obj/local/armeabi/libopus.a'.

admin · 发表于 2016-12-9 17:14:43

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
include $(LOCAL_PATH)/celt_sources.mk
include $(LOCAL_PATH)/opus_sources.mk
include $(LOCAL_PATH)/silk_sources.mk
LOCAL_MODULE := libopus
OGG_DIR := external/libogg
LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/src $(LOCAL_PATH)/silk \
$(LOCAL_PATH)/celt $(LOCAL_PATH)/silk/fixed $(OGG_DIR)/include
LOCAL_SRC_FILES := $(CELT_SOURCES) $(SILK_SOURCES) $(SILK_SOURCES_FIXED) \
$(OPUS_SOURCES) $(OPUS_SOURCES_FLOAT) src/repacketizer_demo.c
LOCAL_CFLAGS := -DNULL=0 -DSOCKLEN_T=socklen_t -DLOCALE_NOT_USED \
-D_LARGEFILE_SOURCE=1 -D_FILE_OFFSET_BITS=64 \
-Drestrict='' -D__EMX__ -DOPUS_BUILD -DFIXED_POINT \
-DUSE_ALLOCA -DHAVE_LRINT -DHAVE_LRINTF -O2 -fno-math-errno
LOCAL_CPPFLAGS := -DBSD=1 -ffast-math -O2 -funroll-loops
# Note: OPUS enhanced DSP/NEON implementation is not yet compatible with arm64.
# Only add the appropriate defines for 32-bit arm architecture.
LOCAL_SRC_FILES_arm += $(CELT_SOURCES_ARM)
LOCAL_CFLAGS_arm += -DOPUS_ARM_ASM -DOPUS_ARM_INLINE_ASM \
-DOPUS_ARM_MAY_HAVE_EDSP -DOPUS_ARM_INLINE_EDSP \
-DOPUS_ARM_MAY_HAVE_MEDIA -DOPUS_ARM_INLINE_MEDIA \
-DOPUS_HAVE_RTCD
# DSP, MEDIA and NEON instructions are in the same assembler file - thus we
# need to include it even if NEON is not supported on target platform.
LOCAL_SRC_FILES_arm += $(subst .s,_gnu.s,$(CELT_SOURCES_ARM_ASM))
ifeq ($(ARCH_ARM_HAVE_NEON),true)
LOCAL_SRC_FILES_arm += $(CELT_SOURCES_ARM_NEON_INTR) \
$(SILK_SOURCES_ARM_NEON_INTR)
LOCAL_CFLAGS_arm += -DOPUS_ARM_MAY_HAVE_NEON -DOPUS_ARM_MAY_HAVE_NEON_INTR \
-DOPUS_ARM_PRESUME_NEON -DOPUS_ARM_INLINE_NEON
endif
LIBOPUS_X86_FILES :=
LIBOPUS_X86_CFLAGS :=
ifeq ($(ARCH_X86_HAVE_SSSE3),true)
LIBOPUS_X86_FILES += $(CELT_SOURCES_SSE) $(CELT_SOURCES_SSE2)
LIBOPUS_X86_CFLAGS += -DOPUS_X86_MAY_HAVE_SSE -DOPUS_X86_PRESUME_SSE \
-DOPUS_X86_MAY_HAVE_SSE2 -DOPUS_X86_PRESUME_SSE2
endif
ifeq ($(ARCH_X86_HAVE_SSE4_1),true)
LIBOPUS_X86_FILES += $(CELT_SOURCES_SSE4_1) \
$(SILK_SOURCES_SSE4_1) $(SILK_SOURCES_FIXED_SSE4_1)
LIBOPUS_X86_CFLAGS += -DOPUS_X86_MAY_HAVE_SSE4_1 -DOPUS_X86_PRESUME_SSE4_1
endif
LOCAL_SRC_FILES_x86 += $(LIBOPUS_X86_FILES)
LOCAL_SRC_FILES_x86_64 += $(LIBOPUS_X86_FILES)
LOCAL_CFLAGS_x86 += $(LIBOPUS_X86_CFLAGS)
LOCAL_CFLAGS_x86_64 += $(LIBOPUS_X86_CFLAGS)
LOCAL_STATIC_LIBRARIES := libogg
include $(BUILD_SHARED_LIBRARY)

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适用unreal https://android.googlesource.com ... al/libopus/+/master

admin · 发表于 2016-12-9 17:15:34

libopus is currently supported on Windows, Mac, and Linux in UE4. I haven't tried making it for Android, but these steps may work.
There is an android.mk for libopus here: https://android.googlesource.com/platform/external/libopus/+/master
Compile a libopus.a and libspeex_resampler.a for ARM and optionally x86. Create an opus-1.1/Android/ARMv7 directory and optional opus-1.1/Android/x86 directory and copy the .a files into them.
Making the following addition to libOpus.build.cs in Engine/Source/ThirdParty/libOpus:
else if (Target.Platform == UnrealTargetPlatform.Android)
{
PublicAdditionalLibraries.Add(LibraryPath + "/Android/ARMv7/libopus.a");
PublicAdditionalLibraries.Add(LibraryPath + "/Android/ARMv7/libspeex_resampler.a");
PublicAdditionalLibraries.Add(LibraryPath + "/Android/x86/libopus.a");
PublicAdditionalLibraries.Add(LibraryPath + "/Android/x86/libspeex_resampler.a");
}

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admin · 发表于 2016-12-9 17:29:14

https://github.com/devbm/UnrealE ... ty/libOpus/opus-1.1

admin · 发表于 2016-12-9 17:45:35

ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=./Android.mk APP_ABI="armeabi armeabi-v7a"