[libcamera-devel] [PATCH v2] gst: use the streams of CameraConfiguration when allocating buffers

[Dafna Hirschfeld]

Currently, when allocating buffers, the streams of
the Camera object are used. Instead the streams of
the CameraConfiguration object should be used.
This is because the Camera object holds all available
streams while the CameraConfiguration holds only the streams
associated with the current configuration.

Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld at collabora.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne at collabora.com>
---
Changes from v1: change the prefix to 'gst:' and extend
the commit log.

 src/gstreamer/gstlibcameraallocator.cpp | 6 ++++--
 src/gstreamer/gstlibcameraallocator.h   | 4 +++-
 src/gstreamer/gstlibcamerasrc.cpp       | 2 +-
 3 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/gstreamer/gstlibcameraallocator.cpp b/src/gstreamer/gstlibcameraallocator.cpp
index 13c6b493..7bd8ba2d 100644
--- a/src/gstreamer/gstlibcameraallocator.cpp
+++ b/src/gstreamer/gstlibcameraallocator.cpp
@@ -183,13 +183,15 @@ gst_libcamera_allocator_class_init(GstLibcameraAllocatorClass *klass)
 }
 
 GstLibcameraAllocator *
-gst_libcamera_allocator_new(std::shared_ptr<Camera> camera)
+gst_libcamera_allocator_new(std::shared_ptr<Camera> camera,
+			    CameraConfiguration *config_)
 {
 	auto *self = GST_LIBCAMERA_ALLOCATOR(g_object_new(GST_TYPE_LIBCAMERA_ALLOCATOR,
 							  nullptr));
 
 	self->fb_allocator = new FrameBufferAllocator(camera);
-	for (Stream *stream : camera->streams()) {
+	for (StreamConfiguration &streamCfg : *config_) {
+		Stream *stream = streamCfg.stream();
 		gint ret;
 
 		ret = self->fb_allocator->allocate(stream);
diff --git a/src/gstreamer/gstlibcameraallocator.h b/src/gstreamer/gstlibcameraallocator.h
index befdcad6..f7fa6acd 100644
--- a/src/gstreamer/gstlibcameraallocator.h
+++ b/src/gstreamer/gstlibcameraallocator.h
@@ -13,12 +13,14 @@
 #include <gst/allocators/allocators.h>
 
 #include <libcamera/stream.h>
+#include <libcamera/camera.h>
 
 #define GST_TYPE_LIBCAMERA_ALLOCATOR gst_libcamera_allocator_get_type()
 G_DECLARE_FINAL_TYPE(GstLibcameraAllocator, gst_libcamera_allocator,
 		     GST_LIBCAMERA, ALLOCATOR, GstDmaBufAllocator)
 
-GstLibcameraAllocator *gst_libcamera_allocator_new(std::shared_ptr<libcamera::Camera> camera);
+GstLibcameraAllocator *gst_libcamera_allocator_new(std::shared_ptr<libcamera::Camera> camera,
+						   libcamera::CameraConfiguration *config_);
 
 bool gst_libcamera_allocator_prepare_buffer(GstLibcameraAllocator *self,
 					    libcamera::Stream *stream,
diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp
index 636c14df..7b13667b 100644
--- a/src/gstreamer/gstlibcamerasrc.cpp
+++ b/src/gstreamer/gstlibcamerasrc.cpp
@@ -429,7 +429,7 @@ gst_libcamera_src_task_enter(GstTask *task, [[maybe_unused]] GThread *thread,
 		return;
 	}
 
-	self->allocator = gst_libcamera_allocator_new(state->cam_);
+	self->allocator = gst_libcamera_allocator_new(state->cam_, state->config_.get());
 	if (!self->allocator) {
 		GST_ELEMENT_ERROR(self, RESOURCE, NO_SPACE_LEFT,
 				  ("Failed to allocate memory"),
-- 
2.17.1