libcamera: Use stream roles directly instead of StreamUsage

In order to prepare for an API overhall of the camera configuration
generation, remove the StreamUsage class and replace its uses by stream
roles. The size hints can't be specified anymore, and will be replaced
with an API on the StreamConfiguration to negotiate configuration
parameters with cameras.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/src/libcamera/pipeline_handler.cpp b/src/libcamera/pipeline_handler.cpp
index b9ac6432..81c11149 100644
--- a/src/libcamera/pipeline_handler.cpp
+++ b/src/libcamera/pipeline_handler.cpp
@@ -221,18 +221,18 @@ void PipelineHandler::unlock()
  * \fn PipelineHandler::generateConfiguration()
  * \brief Generate a camera configuration for a specified camera
  * \param[in] camera The camera to generate a default configuration for
- * \param[in] usages A list of stream usages
+ * \param[in] roles A list of stream roles
  *
- * Generate a default configuration for the \a camera for a specified group of
- * use-cases. The caller shall populate the \a usages array with the use-cases
- * it wishes to fetch the default configuration for. The returned configuration
+ * Generate a default configuration for the \a camera for a specified list of
+ * stream roles. The caller shall populate the \a roles with the use-cases it
+ * wishes to fetch the default configuration for. The returned configuration
  * can then be examined by the caller to learn about the selected streams and
  * their default parameters.
  *
  * The intended companion to this is \a configure() which can be used to change
  * the group of streams parameters.
  *
- * \return A valid CameraConfiguration if the requested usages can be satisfied,
+ * \return A valid CameraConfiguration if the requested roles can be satisfied,
  * or a invalid configuration otherwise
  */