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 camera3_stream_buffer
#include <
camera3.h
>
camera3_stream_buffer_t:
Satu buffering dari streaming camera3. Ini mencakup handle ke streaming induknya, handle ke buffering gralloc itu sendiri, dan pagar sinkronisasi
Buffer tidak menentukan apakah buffer akan digunakan untuk input atau output; hal ini ditentukan oleh jenis streaming induknya dan cara buffer diteruskan ke perangkat HAL.
Definisi di baris
1755
file
camera3.h
.
Pagar sinkronisasi akuisisi untuk buffering ini. HAL harus menunggu fd pagar ini sebelum mencoba membaca dari atau menulis ke buffer ini.
Framework dapat ditetapkan ke -1 untuk menunjukkan bahwa tidak perlu menunggu untuk buffer ini.
Saat HAL menampilkan buffering output ke framework dengan process_capture_result(), acquire_fence harus disetel ke -1. Jika HAL tidak pernah menunggu acquire_fence karena error dalam mengisi buffer, saat memanggil process_capture_result(), HAL harus menetapkan release_fence buffer menjadi acquire_fence yang diteruskan oleh framework. Tindakan ini akan memungkinkan framework menunggu di pagar sebelum menggunakan kembali buffer.
Untuk buffering input, HAL tidak boleh mengubah kolom acquire_fence selama panggilan process_capture_request().
>= CAMERA_DEVICE_API_VERSION_3_2:
Saat HAL menampilkan buffering input ke framework dengan process_capture_result(), acquire_fence harus disetel ke -1. Jika HAL tidak pernah menunggu pembatas akuisisi buffering input karena error, pembatas sinkronisasi harus ditangani dengan cara yang sama seperti cara penanganannya untuk buffering output.
Definisi di baris
1800
dari file
camera3.h
.
Handle native ke buffering
Definisi di baris
1764
dari file
camera3.h
.
Pagar sinkronisasi rilis untuk buffering ini. HAL harus menetapkan pagar ini saat menampilkan buffering ke framework, atau menulis -1 untuk menunjukkan bahwa tidak ada penantian yang diperlukan untuk buffering ini.
Untuk buffering output, pagar harus ditetapkan dalam array output_buffers yang diteruskan ke process_capture_result().
<= CAMERA_DEVICE_API_VERSION_3_1:
Untuk buffering input, pagar rilis harus ditetapkan oleh panggilan process_capture_request().
>= CAMERA_DEVICE_API_VERSION_3_2:
Untuk buffering input, pagar harus ditetapkan di input_buffer yang diteruskan ke process_capture_result().
Setelah memberikan sinyal release_fence untuk buffering ini, HAL tidak boleh melakukan upaya lebih lanjut untuk mengakses buffering ini karena kepemilikan telah sepenuhnya ditransfer kembali ke framework.
Jika pagar -1 ditentukan, kepemilikan buffer ini akan langsung ditransfer kembali setelah panggilan process_capture_result.
Definisi di baris
1827
dari file
camera3.h
.
Status buffer saat ini, salah satu nilai camera3_buffer_status_t. Framework tidak akan meneruskan buffer ke HAL yang dalam status error. Jika buffer tidak dapat diisi oleh HAL, statusnya harus ditetapkan ke CAMERA3_BUFFER_STATUS_ERROR saat ditampilkan ke framework dengan process_capture_result().
Definisi di baris
1773
dari file
camera3.h
.
Handle streaming yang terkait dengan buffering ini
Definisi di baris
1759
dari file
camera3.h
.
Dokumentasi untuk struct ini dibuat dari file berikut:
-
hardware/libhardware/include/hardware/
camera3.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: camera3_stream_buffer Struct Reference\n\ncamera3_stream_buffer Struct Reference\n======================================\n\n[Data Fields](#pub-attribs) \ncamera3_stream_buffer Struct Reference \n\n`\n#include \u003c\n`[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)`\n\u003e\n`\n\n|---------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------|\n| Data Fields ----------- ||\n| [camera3_stream_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h) \\* | [stream](/reference/hal/structcamera3__stream__buffer#afaf6c85f165b4180fe63affae0232dad) |\n| ||\n| buffer_handle_t \\* | [buffer](/reference/hal/structcamera3__stream__buffer#ab87cddef201db642e7972d124d741dc2) |\n| ||\n| int | [status](/reference/hal/structcamera3__stream__buffer#a6e27f49150e9a14580fb313cc2777e00) |\n| ||\n| int | [acquire_fence](/reference/hal/structcamera3__stream__buffer#a5d59e0770b54af97a9fe151da5688719) |\n| ||\n| int | [release_fence](/reference/hal/structcamera3__stream__buffer#a248e5f7856e4c2877715fc9fda8d8ba8) |\n| ||\n\n\nDetailed Description\n--------------------\n\n\ncamera3_stream_buffer_t:\n\n\nA single buffer from a camera3 stream. It includes a handle to its parent stream, the handle to the gralloc buffer itself, and sync fences\n\n\nThe buffer does not specify whether it is to be used for input or output; that is determined by its parent stream type and how the buffer is passed to the HAL device.\n\n\nDefinition at line\n[1755](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\nField Documentation\n-------------------\n\n\n|-------------------|\n| int acquire_fence |\n\n\nThe acquire sync fence for this buffer. The HAL must wait on this fence fd before attempting to read from or write to this buffer.\n\n\nThe framework may be set to -1 to indicate that no waiting is necessary for this buffer.\n\n\nWhen the HAL returns an output buffer to the framework with process_capture_result(), the acquire_fence must be set to -1. If the HAL never waits on the acquire_fence due to an error in filling a buffer, when calling process_capture_result() the HAL must set the release_fence of the buffer to be the acquire_fence passed to it by the framework. This will allow the framework to wait on the fence before reusing the buffer.\n\n\nFor input buffers, the HAL must not change the acquire_fence field during the process_capture_request() call.\n\n\n\\\u003e= CAMERA_DEVICE_API_VERSION_3_2:\n\n\nWhen the HAL returns an input buffer to the framework with process_capture_result(), the acquire_fence must be set to -1. If the HAL never waits on input buffer acquire fence due to an error, the sync fences should be handled similarly to the way they are handled for output buffers.\n\n\nDefinition at line\n[1800](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\n|--------------------------|\n| buffer_handle_t\\* buffer |\n\n\nThe native handle to the buffer\n\n\nDefinition at line\n[1764](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\n|-------------------|\n| int release_fence |\n\n\nThe release sync fence for this buffer. The HAL must set this fence when returning buffers to the framework, or write -1 to indicate that no waiting is required for this buffer.\n\n\nFor the output buffers, the fences must be set in the output_buffers array passed to process_capture_result().\n\n\n\\\u003c= CAMERA_DEVICE_API_VERSION_3_1:\n\n\nFor the input buffer, the release fence must be set by the process_capture_request() call.\n\n\n\\\u003e= CAMERA_DEVICE_API_VERSION_3_2:\n\n\nFor the input buffer, the fences must be set in the input_buffer passed to process_capture_result().\n\n\nAfter signaling the release_fence for this buffer, the HAL should not make any further attempts to access this buffer as the ownership has been fully transferred back to the framework.\n\n\nIf a fence of -1 was specified then the ownership of this buffer is transferred back immediately upon the call of process_capture_result.\n\n\nDefinition at line\n[1827](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\n|------------|\n| int status |\n\n\nCurrent state of the buffer, one of the camera3_buffer_status_t values. The framework will not pass buffers to the HAL that are in an error state. In case a buffer could not be filled by the HAL, it must have its status set to CAMERA3_BUFFER_STATUS_ERROR when returned to the framework with process_capture_result().\n\n\nDefinition at line\n[1773](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\n|----------------------------------------------------------------------------------------------------------------------------------|\n| [camera3_stream_t](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h) \\* stream |\n\n\nThe handle of the stream this buffer is associated with\n\n\nDefinition at line\n[1759](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\nof file\n[camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)\n.\n\n*** ** * ** ***\n\nThe documentation for this struct was generated from the following file:\n\n- hardware/libhardware/include/hardware/ [camera3.h](https://android.googlesource.com/platform/hardware/libhardware/+/master/include/hardware/camera3.h)"]]