[libcamera-devel] [RFC PATCH v2 00/10] Add offset to FrameBuffer::Plane

[Hirokazu Honda]

Since FrameBuffer::Plane doesn't have an offset variable, it is
impossible to map the FrameBuffer::Plane correctly. This series fixes
the issue by adding an offset and aligns some code of mapping and
creating FrameBuffer::Plane with the new offset.

One of the pateches fixes V4L2Device to make a returned FrameBuffer
color format planes from v4l2 format planes. However, V4L2 API doesn't
provide a way of getting a dmabuf plane offset, so a multi planar
format e.g. V4L2_PIX_FMT_NV12M is not supported with this patch series.

This series must be applied on top of the pacth series whose id is 2384.
cf.) https://patchwork.libcamera.org/project/libcamera/list/?series=2384

Change in v2:
- adress review comments to v1


Hirokazu Honda (10):
  libcamera: framebuffer: Add offset to FrameBuffer::Plane
  libcamera: ipa_data_serializer: Modify (de)serialization for offset
  libcamera: mapped_framebuffer: Return plane begin address by
    MappedBuffer::maps()
  cam: file_sink: Use offset in mapping FrameBuffer
  ipa: rkisp1: Use offset in mapping IPABuffer
  qcam: main_window: Use offset mapping FrameBuffer
  gstreamer: gstlibcameraallocator: Use offset in creating a buffer
  libcamera: v4l2_videodevice: Create color-format planes in
    createBuffer()
  android: camera_device: Fill offset and right length in
    CreateFrameBuffer()
  libcamera: framebuffer: Add assertion to detect offset is unfilled

 include/libcamera/framebuffer.h               |  12 +-
 .../libcamera/internal/mapped_framebuffer.h   |   5 +-
 include/libcamera/internal/v4l2_videodevice.h |   9 +-
 src/android/camera_device.cpp                 |  47 +++---
 src/android/camera_device.h                   |   6 +-
 src/android/mm/generic_camera_buffer.cpp      |   2 -
 src/cam/file_sink.cpp                         |  22 ++-
 src/cam/file_sink.h                           |   1 +
 src/gstreamer/gstlibcameraallocator.cpp       |   4 +-
 src/ipa/rkisp1/rkisp1.cpp                     |  31 ++--
 src/libcamera/framebuffer.cpp                 |  31 ++--
 src/libcamera/ipa_data_serializer.cpp         |   5 +-
 src/libcamera/mapped_framebuffer.cpp          |  76 +++++++--
 src/libcamera/v4l2_videodevice.cpp            | 147 ++++++++++++++----
 src/qcam/main_window.cpp                      |  16 +-
 src/qcam/main_window.h                        |   1 +
 test/v4l2_videodevice/buffer_cache.cpp        |   6 +-
 17 files changed, 309 insertions(+), 112 deletions(-)

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2.33.0.rc2.250.ged5fa647cd-goog