Mulai 27 Maret 2025, sebaiknya gunakan android-latest-release, bukan aosp-main, untuk mem-build dan berkontribusi pada AOSP. Untuk mengetahui informasi selengkapnya, lihat Perubahan pada AOSP.
Mengonfigurasi library bersama
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Setelah membuat
konfigurasi
kebijakan audio, Anda harus memaketkan implementasi HAL ke dalam library bersama
dan menyalinnya ke lokasi yang sesuai:
- Buat direktori
device/<company>/<device>/audio
untuk memuat file sumber library Anda.
- Buat file
Android.mk untuk mem-build library bersama. Pastikan
Makefile berisi baris berikut:
LOCAL_MODULE := audio.primary.<device>
Library Anda harus diberi nama audio.primary.<device>.so
agar Android dapat memuat library dengan benar. Bagian primary
dari nama file ini menunjukkan bahwa library bersama ini ditujukan untuk hardware
audio utama yang berada di perangkat. Nama modul
audio.a2dp.<device> dan
audio.usb.<device> juga tersedia untuk antarmuka audio
Bluetooth dan USB. Berikut adalah contoh Android.mk dari
hardware audio Galaxy Nexus:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE := audio.primary.tuna
LOCAL_MODULE_RELATIVE_PATH := hw
LOCAL_SRC_FILES := audio_hw.c ril_interface.c
LOCAL_C_INCLUDES += \
external/tinyalsa/include \
$(call include-path-for, audio-utils) \
$(call include-path-for, audio-effects)
LOCAL_SHARED_LIBRARIES := liblog libcutils libtinyalsa libaudioutils libdl
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)
- Jika produk Anda mendukung audio latensi rendah seperti yang ditentukan oleh CDD Android,
salin file fitur XML yang sesuai ke produk Anda. Misalnya, dalam
Makefile
device/<company>/<device>/device.mk
produk Anda:
PRODUCT_COPY_FILES := ...
PRODUCT_COPY_FILES += \
frameworks/native/data/etc/android.hardware.audio.low_latency.xml:system/etc/permissions/android.hardware.audio.low_latency.xml \
- Salin file konfigurasi kebijakan audio yang Anda buat sebelumnya ke
direktori
system/etc/ di
Makefile device/<company>/<device>/device.mk produk Anda.
Contoh:
PRODUCT_COPY_FILES += \
device/samsung/tuna/audio/audio_policy.conf:system/etc/audio_policy.conf
- Deklarasikan modul bersama HAL audio yang diperlukan oleh
produk Anda dalam
Makefile
device/<company>/<device>/device.mk produk.
Misalnya, Galaxy Nexus memerlukan modul HAL audio primer dan Bluetooth:
PRODUCT_PACKAGES += \
audio.primary.tuna \
audio.a2dp.default
Konten dan contoh kode di halaman ini tunduk kepada lisensi yang dijelaskan dalam Lisensi Konten. Java dan OpenJDK adalah merek dagang atau merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-03-26 UTC.
[[["Mudah dipahami","easyToUnderstand","thumb-up"],["Memecahkan masalah saya","solvedMyProblem","thumb-up"],["Lainnya","otherUp","thumb-up"]],[["Informasi yang saya butuhkan tidak ada","missingTheInformationINeed","thumb-down"],["Terlalu rumit/langkahnya terlalu banyak","tooComplicatedTooManySteps","thumb-down"],["Sudah usang","outOfDate","thumb-down"],["Masalah terjemahan","translationIssue","thumb-down"],["Masalah kode / contoh","samplesCodeIssue","thumb-down"],["Lainnya","otherDown","thumb-down"]],["Terakhir diperbarui pada 2025-03-26 UTC."],[],[],null,["# Configure a shared library\n\nAfter creating an\n[audio policy\nconfiguration](/docs/core/audio/implement-policy), you must package the HAL implementation into a shared library\nand copy it to the appropriate location:\n\n1. Create a `device/\u003ccompany\u003e/\u003cdevice\u003e/audio` directory to contain your library's source files.\n2. Create an `Android.mk` file to build the shared library. Ensure the Makefile contains the following line: \n\n ```\n LOCAL_MODULE := audio.primary.\u003cdevice\u003e\n ```\n\n Your library must be named `audio.primary.\u003cdevice\u003e.so`\n so Android can correctly load the library. The `primary` portion of\n this filename indicates that this shared library is for the primary audio\n hardware located on the device. The module names\n `audio.a2dp.\u003cdevice\u003e` and\n `audio.usb.\u003cdevice\u003e` are also available for Bluetooth and\n USB audio interfaces. Here is an example of an `Android.mk` from the\n Galaxy Nexus audio hardware: \n\n ```\n LOCAL_PATH := $(call my-dir)\n\n include $(CLEAR_VARS)\n\n LOCAL_MODULE := audio.primary.tuna\n LOCAL_MODULE_RELATIVE_PATH := hw\n LOCAL_SRC_FILES := audio_hw.c ril_interface.c\n LOCAL_C_INCLUDES += \\\n external/tinyalsa/include \\\n $(call include-path-for, audio-utils) \\\n $(call include-path-for, audio-effects)\n LOCAL_SHARED_LIBRARIES := liblog libcutils libtinyalsa libaudioutils libdl\n LOCAL_MODULE_TAGS := optional\n\n include $(BUILD_SHARED_LIBRARY)\n ```\n\n3. If your product supports low latency audio as specified by the Android CDD, copy the corresponding XML feature file into your product. For example, in your product's `device/\u003ccompany\u003e/\u003cdevice\u003e/device.mk` Makefile: \n\n ```\n PRODUCT_COPY_FILES := ...\n\n PRODUCT_COPY_FILES += \\\n frameworks/native/data/etc/android.hardware.audio.low_latency.xml:system/etc/permissions/android.hardware.audio.low_latency.xml \\\n ```\n\n4. Copy the audio policy configuration file you created earlier to the `system/etc/` directory in your product's `device/\u003ccompany\u003e/\u003cdevice\u003e/device.mk` Makefile. For example: \n\n ```\n PRODUCT_COPY_FILES += \\\n device/samsung/tuna/audio/audio_policy.conf:system/etc/audio_policy.conf\n ```\n\n5. Declare the shared modules of your audio HAL that are required by your product in the product's `device/\u003ccompany\u003e/\u003cdevice\u003e/device.mk` Makefile. For example, the Galaxy Nexus requires the primary and Bluetooth audio HAL modules: \n\n ```\n PRODUCT_PACKAGES += \\\n audio.primary.tuna \\\n audio.a2dp.default\n ```"]]
