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.
Tetap teratur dengan koleksi
Simpan dan kategorikan konten berdasarkan preferensi Anda.
Referensi Struct camera2_frame_queue_dst_ops
#include <
camera2.h
>
Protokol antrean output frame:
Framework menyimpan antrean dan kontennya. Pada awalnya, antrean kosong.
-
Saat siap mengisi frame metadata output, perangkat harus menghapus buffer metadata dari ukuran yang diperlukan.
-
Kemudian, buffer metadata akan terisi, dan ditempatkan di antrean frame menggunakan enqueue_frame. Framework mengambil kepemilikan frame.
-
Jika terjadi error, permintaan untuk menghapus pipeline, atau menonaktifkan, perangkat harus menampilkan frame yang dihapus dari antrean yang terpengaruh ke framework dengan memanggil cancel_frame.
Definisi di baris
263
file
camera2.h
.
Menampilkan buffering metadata yang dihapus dari antrean ke framework untuk digunakan kembali; jangan menandainya sebagai terisi. Gunakan saat mengalami error, atau menghapus antrean permintaan internal.
Definisi di baris
278
dari file
camera2.h
.
Mendapatkan buffering metadata kosong untuk diisi dari framework. Buffer metadata baru akan memiliki ruang untuk jumlah entri metadata, ditambah penyimpanan tambahan sebesar data_bytes. Frame yang di-dequeue di sini harus ditampilkan ke framework dengan cancel_frame atau enqueue_frame.
Definisi di baris
270
dari file
camera2.h
.
Tempatkan frame metadata yang telah selesai di antrean output frame.
Definisi di baris
284
dari file
camera2.h
.
Dokumentasi untuk struct ini dibuat dari file berikut:
-
hardware/libhardware/include/hardware/
camera2.h
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 2025-07-27 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 2025-07-27 UTC."],[],[],null,["# Android Hardware Abstraction Layer: camera2_frame_queue_dst_ops Struct Reference\n\ncamera2_frame_queue_dst_ops Struct Reference\n============================================\n\n[Data Fields](#pub-attribs) \ncamera2_frame_queue_dst_ops Struct Reference \n\n`\n#include \u003c\n`[camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)`\n\u003e\n`\n\n|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Data Fields ----------- ||\n| int(\\* | [dequeue_frame](/reference/hal/structcamera2__frame__queue__dst__ops#a878d3091ff5be219e3812242928a28ea) )(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, size_t entries, size_t data_bytes, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*\\*buffer) |\n| ||\n| int(\\* | [cancel_frame](/reference/hal/structcamera2__frame__queue__dst__ops#a742d35d2b70e74c60e430ca9b08ae7b4) )(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*buffer) |\n| ||\n| int(\\* | [enqueue_frame](/reference/hal/structcamera2__frame__queue__dst__ops#a75baa7e999cc35f9908638c582833fc2) )(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*buffer) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\nFrame output queue protocol:\n\n\nThe framework holds the queue and its contents. At start, the queue is empty.\n\n1. When the device is ready to fill an output metadata frame, it must dequeue a metadata buffer of the required size.\n2. It should then fill the metadata buffer, and place it on the frame queue using enqueue_frame. The framework takes ownership of the frame.\n3. In case of an error, a request to flush the pipeline, or shutdown, the device must return any affected dequeued frames to the framework by calling cancel_frame.\n\n\nDefinition at line\n[263](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\nof file\n[camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\n.\n\nField Documentation\n-------------------\n\n\n|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* cancel_frame)(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*buffer) |\n\n\nReturn a dequeued metadata buffer to the framework for reuse; do not mark it as filled. Use when encountering errors, or flushing the internal request queue.\n\n\nDefinition at line\n[278](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\nof file\n[camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* dequeue_frame)(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, size_t entries, size_t data_bytes, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*\\*buffer) |\n\n\nGet an empty metadata buffer to fill from the framework. The new metadata buffer will have room for entries number of metadata entries, plus data_bytes worth of extra storage. Frames dequeued here must be returned to the framework with either cancel_frame or enqueue_frame.\n\n\nDefinition at line\n[270](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\nof file\n[camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\n.\n\n|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int(\\* enqueue_frame)(const struct [camera2_frame_queue_dst_ops](/reference/hal/structcamera2__frame__queue__dst__ops) \\*q, [camera_metadata_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera_common.h) \\*buffer) |\n\n\nPlace a completed metadata frame on the frame output queue.\n\n\nDefinition at line\n[284](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\nof file\n[camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)\n.\n\n*** ** * ** ***\n\nThe documentation for this struct was generated from the following file:\n\n- hardware/libhardware/include/hardware/ [camera2.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera2.h)"]]