diff options
| -rw-r--r-- | meson_options.txt | 2 | ||||
| -rw-r--r-- | src/android/mm/cros_camera_buffer.cpp | 128 | ||||
| -rw-r--r-- | src/android/mm/meson.build | 3 |
3 files changed, 132 insertions, 1 deletions
diff --git a/meson_options.txt b/meson_options.txt index d840543b..f6b6c65c 100644 --- a/meson_options.txt +++ b/meson_options.txt @@ -7,7 +7,7 @@ option('android', option('android_platform', type : 'combo', - choices : ['generic'], + choices : ['cros', 'generic'], value : 'generic', description : 'Select the Android platform to compile for') diff --git a/src/android/mm/cros_camera_buffer.cpp b/src/android/mm/cros_camera_buffer.cpp new file mode 100644 index 00000000..7df4f47c --- /dev/null +++ b/src/android/mm/cros_camera_buffer.cpp @@ -0,0 +1,128 @@ +/* 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/internal/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, int flags); + ~Private(); + + bool isValid() const { return valid_; } + + unsigned int numPlanes() const; + + Span<uint8_t> plane(unsigned int plane); + + size_t jpegBufferSize(size_t maxJpegBufferSize) const; + +private: + cros::CameraBufferManager *bufferManager_; + buffer_handle_t handle_; + unsigned int numPlanes_; + bool valid_; + union { + void *addr; + android_ycbcr ycbcr; + } mem; + + const uint8_t *planeAddr(unsigned int plane) const; + uint8_t *planeAddr(unsigned int plane); +}; + +CameraBuffer::Private::Private(CameraBuffer *cameraBuffer, + buffer_handle_t camera3Buffer, int flags) + : Extensible::Private(cameraBuffer), handle_(camera3Buffer), + numPlanes_(0), valid_(false) +{ + bufferManager_ = cros::CameraBufferManager::GetInstance(); + + bufferManager_->Register(camera3Buffer); + + numPlanes_ = bufferManager_->GetNumPlanes(camera3Buffer); + switch (numPlanes_) { + case 1: { + int 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: { + int 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; + } + + valid_ = true; +} + +CameraBuffer::Private::~Private() +{ + bufferManager_->Unlock(handle_); + bufferManager_->Deregister(handle_); +} + +unsigned int CameraBuffer::Private::numPlanes() const +{ + return bufferManager_->GetNumPlanes(handle_); +} + +Span<uint8_t> CameraBuffer::Private::plane(unsigned int plane) +{ + void *addr; + + switch (numPlanes()) { + case 1: + addr = mem.addr; + break; + default: + switch (plane) { + case 1: + addr = mem.ycbcr.y; + break; + case 2: + addr = mem.ycbcr.cb; + break; + case 3: + addr = mem.ycbcr.cr; + break; + } + } + + return { static_cast<uint8_t *>(addr), + bufferManager_->GetPlaneSize(handle_, plane) }; +} + +size_t CameraBuffer::Private::jpegBufferSize(size_t maxJpegBufferSize) const +{ + return bufferManager_->GetPlaneSize(handle_, 0); +} + +PUBLIC_CAMERA_BUFFER_IMPLEMENTATION diff --git a/src/android/mm/meson.build b/src/android/mm/meson.build index 97f83f2a..eeb5cc2e 100644 --- a/src/android/mm/meson.build +++ b/src/android/mm/meson.build @@ -3,4 +3,7 @@ platform = get_option('android_platform') if platform == 'generic' android_hal_sources += files(['generic_camera_buffer.cpp']) +elif platform == 'cros' + android_hal_sources += files(['cros_camera_buffer.cpp']) + android_deps += [dependency('libcros_camera')] endif |