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.
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Referensi Struct camera2_stream_ops
#include <
camera2.h
>
Antarmuka antrean streaming gambar output. Kumpulan metode ini disediakan ke perangkat HAL di allocate_stream(), dan digunakan untuk berinteraksi dengan antrean buffering gralloc untuk streaming tersebut. Fungsi tersebut mungkin tidak dipanggil hingga setelah allocate_stream ditampilkan.
Definisi di baris
73
file
camera2.h
.
Menampilkan buffer ke antrean tanpa menandainya sebagai terisi.
Definisi di baris
102
dari file
camera2.h
.
Mendapatkan buffer untuk diisi dari antrean. Ukuran dan format buffering ditetapkan untuk streaming tertentu (ditentukan dalam allocate_stream), dan stride harus dikueri dari modul gralloc platform. Buffer gralloc akan dialokasikan berdasarkan flag penggunaan yang disediakan oleh allocate_stream, dan akan dikunci untuk digunakan.
Definisi di baris
81
dari file
camera2.h
.
int(* enqueue_buffer)(const struct
camera2_stream_ops
*w, int64_t timestamp, buffer_handle_t *buffer)
|
Mendorong buffering yang terisi ke streaming untuk digunakan oleh konsumen.
Stempel waktu menunjukkan waktu saat awal eksposur baris pertama gambar; stempel waktu harus berasal dari jam monoton, dan diukur dalam nanodetik. Stempel waktu tidak perlu sebanding antara kamera yang berbeda, atau instance berturut-turut dari kamera yang sama. Namun, keduanya harus sebanding antara streaming dari kamera yang sama. Jika satu pengambilan menghasilkan buffer untuk beberapa streaming, setiap streaming harus memiliki stempel waktu yang sama untuk buffer tersebut, dan stempel waktu tersebut harus cocok dengan stempel waktu dalam metadata frame output.
Definisi di baris
96
dari file
camera2.h
.
int(* set_crop)(const struct
camera2_stream_ops
*w, int left, int top, int right, int bottom)
|
Menetapkan periode pemangkasan untuk buffering yang selanjutnya dimasukkan ke antrean. Parameter diukur dalam piksel yang sesuai dengan lebar dan tinggi buffering.
Definisi di baris
108
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_stream_ops Struct Reference\n\ncamera2_stream_ops Struct Reference\n===================================\n\n[Data Fields](#pub-attribs) \ncamera2_stream_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_buffer](/reference/hal/structcamera2__stream__ops#ad51917100a74cf70e552c51e24407cbb) )(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, buffer_handle_t \\*\\*buffer) |\n| ||\n| int(\\* | [enqueue_buffer](/reference/hal/structcamera2__stream__ops#a724a4193411f3278ad9ad3f04ab983f1) )(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, int64_t timestamp, buffer_handle_t \\*buffer) |\n| ||\n| int(\\* | [cancel_buffer](/reference/hal/structcamera2__stream__ops#ae3aa87ba699c53b8960b6529eb01ba83) )(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, buffer_handle_t \\*buffer) |\n| ||\n| int(\\* | [set_crop](/reference/hal/structcamera2__stream__ops#a3c2102f917bfe992de1967f9f8abc1d6) )(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, int left, int top, int right, int bottom) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\nOutput image stream queue interface. A set of these methods is provided to the HAL device in allocate_stream(), and are used to interact with the gralloc buffer queue for that stream. They may not be called until after allocate_stream returns.\n\n\nDefinition at line\n[73](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_buffer)(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, buffer_handle_t \\*buffer) |\n\n\nReturn a buffer to the queue without marking it as filled.\n\n\nDefinition at line\n[102](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_buffer)(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, buffer_handle_t \\*\\*buffer) |\n\n\nGet a buffer to fill from the queue. The size and format of the buffer are fixed for a given stream (defined in allocate_stream), and the stride should be queried from the platform gralloc module. The gralloc buffer will have been allocated based on the usage flags provided by allocate_stream, and will be locked for use.\n\n\nDefinition at line\n[81](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_buffer)(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, int64_t timestamp, buffer_handle_t \\*buffer) |\n\n\nPush a filled buffer to the stream to be used by the consumer.\n\n\nThe timestamp represents the time at start of exposure of the first row of the image; it must be from a monotonic clock, and is measured in nanoseconds. The timestamps do not need to be comparable between different cameras, or consecutive instances of the same camera. However, they must be comparable between streams from the same camera. If one capture produces buffers for multiple streams, each stream must have the same timestamp for that buffer, and that timestamp must match the timestamp in the output frame metadata.\n\n\nDefinition at line\n[96](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(\\* set_crop)(const struct [camera2_stream_ops](/reference/hal/structcamera2__stream__ops) \\*w, int left, int top, int right, int bottom) |\n\n\nSet the crop window for subsequently enqueued buffers. The parameters are measured in pixels relative to the buffer width and height.\n\n\nDefinition at line\n[108](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)"]]