27aff949fb
Move the functionality for the following components to the new base support library: - BoundMethod - EventDispatcher - EventDispatcherPoll - Log - Message - Object - Signal - Semaphore - Thread - Timer While it would be preferable to see these split to move one component per commit, these components are all interdependent upon each other, which leaves us with one big change performing the move for all of them. Reviewed-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
92 lines
1.9 KiB
C++
92 lines
1.9 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2021, Google Inc.
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*
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* generic_camera_buffer.cpp - Generic Android frame buffer backend
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*/
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#include "../camera_buffer.h"
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#include <unistd.h>
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#include <libcamera/base/log.h>
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#include "libcamera/internal/buffer.h"
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using namespace libcamera;
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LOG_DECLARE_CATEGORY(HAL)
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class CameraBuffer::Private : public Extensible::Private,
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public libcamera::MappedBuffer
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{
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LIBCAMERA_DECLARE_PUBLIC(CameraBuffer)
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public:
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Private(CameraBuffer *cameraBuffer,
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buffer_handle_t camera3Buffer, int flags);
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~Private();
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unsigned int numPlanes() const;
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Span<uint8_t> plane(unsigned int plane);
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size_t jpegBufferSize(size_t maxJpegBufferSize) const;
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};
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CameraBuffer::Private::Private(CameraBuffer *cameraBuffer,
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buffer_handle_t camera3Buffer, int flags)
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: Extensible::Private(cameraBuffer)
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{
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maps_.reserve(camera3Buffer->numFds);
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error_ = 0;
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for (int i = 0; i < camera3Buffer->numFds; i++) {
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if (camera3Buffer->data[i] == -1)
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continue;
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off_t length = lseek(camera3Buffer->data[i], 0, SEEK_END);
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if (length < 0) {
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error_ = -errno;
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LOG(HAL, Error) << "Failed to query plane length";
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break;
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}
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void *address = mmap(nullptr, length, flags, MAP_SHARED,
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camera3Buffer->data[i], 0);
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if (address == MAP_FAILED) {
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error_ = -errno;
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LOG(HAL, Error) << "Failed to mmap plane";
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break;
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}
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maps_.emplace_back(static_cast<uint8_t *>(address),
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static_cast<size_t>(length));
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}
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}
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CameraBuffer::Private::~Private()
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{
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}
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unsigned int CameraBuffer::Private::numPlanes() const
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{
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return maps_.size();
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}
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Span<uint8_t> CameraBuffer::Private::plane(unsigned int plane)
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{
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if (plane >= maps_.size())
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return {};
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return maps_[plane];
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}
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size_t CameraBuffer::Private::jpegBufferSize(size_t maxJpegBufferSize) const
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{
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return std::min<unsigned int>(maps_[0].size(),
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maxJpegBufferSize);
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}
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PUBLIC_CAMERA_BUFFER_IMPLEMENTATION
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