libcamera/vivid.git - libcamera pipeline handler for VIVID

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author	Jacopo Mondi <jacopo@jmondi.org>	2018-12-14 11:38:14 +0100
committer	Jacopo Mondi <jacopo@jmondi.org>	2018-12-19 10:30:44 +0100
commit	7dc517ca6beefa4c72224c302eba6699fa878c30 (patch)
tree	d038cdb49f2c389b18dd2af8d2cc8f7795d0d790 /Documentation/coding-style.rst
parent	c81bc473fd24de5a46bb995510378433d23d3098 (diff)

build: Define library private include path

Separate declaration of library internal inclusion path. This will be used by tests, developed outside of library code, that need to include parts of the library internal APIs and can re-use the here defined variable. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

Diffstat (limited to 'Documentation/coding-style.rst')

0 files changed, 0 insertions, 0 deletions

/* SPDX-License-Identifier: LGPL-2.1-or-later */ /* * Copyright (C) 2021, Google Inc. * * cros_camera_buffer.cpp - Chromium OS buffer backend using CameraBufferManager */ #include "../camera_buffer.h" #include <libcamera/base/log.h> #include "cros-camera/camera_buffer_manager.h" using namespace libcamera; LOG_DECLARE_CATEGORY(HAL) class CameraBuffer::Private : public Extensible::Private { LIBCAMERA_DECLARE_PUBLIC(CameraBuffer) public: Private(CameraBuffer *cameraBuffer, buffer_handle_t camera3Buffer, PixelFormat pixelFormat, const Size &size, int flags); ~Private(); bool isValid() const { return registered_; } unsigned int numPlanes() const; Span<uint8_t> plane(unsigned int plane); unsigned int stride(unsigned int plane) const; unsigned int offset(unsigned int plane) const; unsigned int size(unsigned int plane) const; size_t jpegBufferSize(size_t maxJpegBufferSize) const; private: void map(); cros::CameraBufferManager *bufferManager_; buffer_handle_t handle_; unsigned int numPlanes_; bool mapped_; bool registered_; union { void *addr; android_ycbcr ycbcr; } mem; }; CameraBuffer::Private::Private([[maybe_unused]] CameraBuffer *cameraBuffer, buffer_handle_t camera3Buffer, [[maybe_unused]] PixelFormat pixelFormat, [[maybe_unused]] const Size &size, [[maybe_unused]] int flags) : handle_(camera3Buffer), numPlanes_(0), mapped_(false), registered_(false) { bufferManager_ = cros::CameraBufferManager::GetInstance(); int ret = bufferManager_->Register(camera3Buffer); if (ret) { LOG(HAL, Error) << "Failed registering a buffer: " << ret; return; } registered_ = true; numPlanes_ = bufferManager_->GetNumPlanes(camera3Buffer); } CameraBuffer::Private::~Private() { int ret; if (mapped_) { ret = bufferManager_->Unlock(handle_); if (ret != 0) LOG(HAL, Error) << "Failed to unlock buffer: " << strerror(-ret); } if (registered_) { ret = bufferManager_->Deregister(handle_); if (ret != 0) LOG(HAL, Error) << "Failed to deregister buffer: " << strerror(-ret); } } unsigned int CameraBuffer::Private::numPlanes() const { return bufferManager_->GetNumPlanes(handle_); } Span<uint8_t> CameraBuffer::Private::plane(unsigned int plane) { if (!mapped_) map(); if (!mapped_) return {}; void *addr; switch (numPlanes()) { case 1: addr = mem.addr; break; default: switch (plane) { case 0: addr = mem.ycbcr.y; break; case 1: addr = mem.ycbcr.cb; break; case 2: addr = mem.ycbcr.cr; break; } } return { static_cast<uint8_t *>(addr), bufferManager_->GetPlaneSize(handle_, plane) }; } unsigned int CameraBuffer::Private::stride(unsigned int plane) const { return cros::CameraBufferManager::GetPlaneStride(handle_, plane); } unsigned int CameraBuffer::Private::offset(unsigned int plane) const { return cros::CameraBufferManager::GetPlaneOffset(handle_, plane); } unsigned int CameraBuffer::Private::size(unsigned int plane) const { return cros::CameraBufferManager::GetPlaneSize(handle_, plane); } size_t CameraBuffer::Private::jpegBufferSize([[maybe_unused]] size_t maxJpegBufferSize) const { return bufferManager_->GetPlaneSize(handle_, 0); } void CameraBuffer::Private::map() { int ret; switch (numPlanes_) { case 1: { ret = bufferManager_->Lock(handle_, 0, 0, 0, 0, 0, &mem.addr); if (ret) { LOG(HAL, Error) << "Single plane buffer mapping failed"; return; } break; } case 2: case 3: { ret = bufferManager_->LockYCbCr(handle_, 0, 0, 0, 0, 0, &mem.ycbcr); if (ret) { LOG(HAL, Error) << "YCbCr buffer mapping failed"; return; } break; } default: LOG(HAL, Error) << "Invalid number of planes: " << numPlanes_; return; } mapped_ = true; return; } PUBLIC_CAMERA_BUFFER_IMPLEMENTATION


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