[PATCH v16 0/7] Add VirtualPipelineHandler

[Harvey Yang]

Hi all,

This series adds virtual pipeline handler, which doesn't depend on any
hardware, like camera sensor or ISP. Currently the configuration
supports test patterns and images.

It passed the gitlab pipeline:
https://gitlab.freedesktop.org/chenghaoyang/libcamera/-/pipelines/1294884

Updates in v16:
- Updates location in config with `properties::LocationNameValueMap`.

Updates in v15:
- Fixed multi_stream_test with `PipelineHandler::match()`.

Updates in v14:
- Refactored ImageFrames to keep a list of filepaths directly.

Updates in v13:
- Returned an errno in `FrameGenerete::generateFrame()`

Updates in v12:
- Added ImageFrameGenerator first, then add Parser.
- Removed ScaleMode argument, as only Fill is supported now.
- Fixed bug of Stream's configuration usage in configure().

Updates in v11:
- Allowed a single value in the config file's frame_rates field.

Updates in v10:
Apply fixes according to Jacopo's and Barnabás' comments.
- Split test_pattern and path fields in the yaml format.
- Let FrameGenerators control frameCount_.
- Fixed match() returning values.

Updates in v9: Allocate contiguous memory for planes in the same
FrameBuffer.

BR,
Harvey


Harvey Yang (7):
  libcamera: add DmaBufAllocator::exportBuffers()
  libcamera: Remove PipelineHandler Fatal check of non-empty
    MediaDevices
  libcamera: virtual: Add VirtualPipelineHandler
  libcamera: pipeline: Add test pattern for VirtualPipelineHandler
  libcamera: virtual: Add ImageFrameGenerator
  libcamera: virtual: Read config and register cameras based on the
    config
  libcamera: software_isp: Refactor SoftwareIsp to use
    DmaBufAllocator::exportBuffers

 .../libcamera/internal/dma_buf_allocator.h    |  13 +
 meson.build                                   |   1 +
 meson_options.txt                             |   3 +-
 src/android/meson.build                       |  19 -
 src/libcamera/dma_buf_allocator.cpp           |  57 +++
 src/libcamera/pipeline/virtual/README.md      |  65 +++
 .../pipeline/virtual/config_parser.cpp        | 260 ++++++++++++
 .../pipeline/virtual/config_parser.h          |  39 ++
 .../pipeline/virtual/data/virtual.yaml        |  36 ++
 .../pipeline/virtual/frame_generator.h        |  29 ++
 .../virtual/image_frame_generator.cpp         | 172 ++++++++
 .../pipeline/virtual/image_frame_generator.h  |  49 +++
 src/libcamera/pipeline/virtual/meson.build    |  13 +
 .../virtual/test_pattern_generator.cpp        | 136 ++++++
 .../pipeline/virtual/test_pattern_generator.h |  52 +++
 src/libcamera/pipeline/virtual/virtual.cpp    | 398 ++++++++++++++++++
 src/libcamera/pipeline/virtual/virtual.h      |  61 +++
 src/libcamera/pipeline_handler.cpp            |  11 +-
 src/libcamera/software_isp/software_isp.cpp   |  20 +-
 src/meson.build                               |  19 +
 20 files changed, 1411 insertions(+), 42 deletions(-)
 create mode 100644 src/libcamera/pipeline/virtual/README.md
 create mode 100644 src/libcamera/pipeline/virtual/config_parser.cpp
 create mode 100644 src/libcamera/pipeline/virtual/config_parser.h
 create mode 100644 src/libcamera/pipeline/virtual/data/virtual.yaml
 create mode 100644 src/libcamera/pipeline/virtual/frame_generator.h
 create mode 100644 src/libcamera/pipeline/virtual/image_frame_generator.cpp
 create mode 100644 src/libcamera/pipeline/virtual/image_frame_generator.h
 create mode 100644 src/libcamera/pipeline/virtual/meson.build
 create mode 100644 src/libcamera/pipeline/virtual/test_pattern_generator.cpp
 create mode 100644 src/libcamera/pipeline/virtual/test_pattern_generator.h
 create mode 100644 src/libcamera/pipeline/virtual/virtual.cpp
 create mode 100644 src/libcamera/pipeline/virtual/virtual.h

-- 
2.47.0.105.g07ac214952-goog