[libcamera-devel,1/5] android: camera_stream: Add sourceStream

15266 diff mbox series

From: Hirokazu Honda <hiroh@chromium.org>

Add to the CameraStream class a sourceStream field, which for streams
of type Mapped contains a reference to the stream which produces the
actual image data.

The sourceStream of mapped streams will be used in later patches to make
sure for each Mapped stream at least one libcamera::Stream is queued to
the libcamera::Camera.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
---
 src/android/camera_device.cpp | 9 ++++++++-
 src/android/camera_stream.cpp | 6 ++++--
 src/android/camera_stream.h   | 6 +++++-
 3 files changed, 17 insertions(+), 4 deletions(-)

Hi Jacopo,

On Tue, Jan 11, 2022 at 1:54 AM Jacopo Mondi <jacopo@jmondi.org> wrote:
>
> From: Hirokazu Honda <hiroh@chromium.org>
>
> Add to the CameraStream class a sourceStream field, which for streams
> of type Mapped contains a reference to the stream which produces the
> actual image data.
>
> The sourceStream of mapped streams will be used in later patches to make
> sure for each Mapped stream at least one libcamera::Stream is queued to
> the libcamera::Camera.
>
> Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
> ---
>  src/android/camera_device.cpp | 9 ++++++++-
>  src/android/camera_stream.cpp | 6 ++++--
>  src/android/camera_stream.h   | 6 +++++-
>  3 files changed, 17 insertions(+), 4 deletions(-)
>
> diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
> index 83825736ce31..005d95b51a0c 100644
> --- a/src/android/camera_device.cpp
> +++ b/src/android/camera_device.cpp
> @@ -681,10 +681,17 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
>         for (const auto &streamConfig : streamConfigs) {
>                 config->addConfiguration(streamConfig.config);
>
> +               CameraStream *sourceStream = nullptr;
>                 for (auto &stream : streamConfig.streams) {
> +
>                         streams_.emplace_back(this, config.get(), stream.type,
> -                                             stream.stream, config->size() - 1);
> +                                             stream.stream, sourceStream,
> +                                             config->size() - 1);
>                         stream.stream->priv = static_cast<void *>(&streams_.back());

Although this is not critical problem, I would set to nullptr if the
stream is not Mapped.
Because sourceStream for Direct and Internal streams is not used.

Regards,
 -Hiro
> +
> +                       /* Mapped streams are always associated with a Direct one. */
> +                       if (stream.type == CameraStream::Type::Direct)
> +                               sourceStream = &streams_.back();
>                 }
>         }
>
> diff --git a/src/android/camera_stream.cpp b/src/android/camera_stream.cpp
> index c21574501916..032b0407bd32 100644
> --- a/src/android/camera_stream.cpp
> +++ b/src/android/camera_stream.cpp
> @@ -52,9 +52,11 @@ LOG_DECLARE_CATEGORY(HAL)
>
>  CameraStream::CameraStream(CameraDevice *const cameraDevice,
>                            CameraConfiguration *config, Type type,
> -                          camera3_stream_t *camera3Stream, unsigned int index)
> +                          camera3_stream_t *camera3Stream,
> +                          CameraStream *const sourceStream, unsigned int index)
>         : cameraDevice_(cameraDevice), config_(config), type_(type),
> -         camera3Stream_(camera3Stream), index_(index)
> +         camera3Stream_(camera3Stream), sourceStream_(sourceStream),
> +         index_(index)
>  {
>  }
>
> diff --git a/src/android/camera_stream.h b/src/android/camera_stream.h
> index f9504462b253..4c5078b2c26d 100644
> --- a/src/android/camera_stream.h
> +++ b/src/android/camera_stream.h
> @@ -114,7 +114,9 @@ public:
>         };
>         CameraStream(CameraDevice *const cameraDevice,
>                      libcamera::CameraConfiguration *config, Type type,
> -                    camera3_stream_t *camera3Stream, unsigned int index);
> +                    camera3_stream_t *camera3Stream,
> +                    CameraStream *const sourceStream,
> +                    unsigned int index);
>         CameraStream(CameraStream &&other);
>         ~CameraStream();
>
> @@ -122,6 +124,7 @@ public:
>         camera3_stream_t *camera3Stream() const { return camera3Stream_; }
>         const libcamera::StreamConfiguration &configuration() const;
>         libcamera::Stream *stream() const;
> +       CameraStream *sourceStream() const { return sourceStream_; }
>
>         int configure();
>         int process(Camera3RequestDescriptor::StreamBuffer *streamBuffer);
> @@ -167,6 +170,7 @@ private:
>         const libcamera::CameraConfiguration *config_;
>         const Type type_;
>         camera3_stream_t *camera3Stream_;
> +       CameraStream *const sourceStream_;
>         const unsigned int index_;
>
>         std::unique_ptr<PlatformFrameBufferAllocator> allocator_;
> --
> 2.34.1
>