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authorNicolas Dufresne <nicolas.dufresne@collabora.com>2020-01-27 17:44:08 -0500
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-03-07 01:58:08 +0200
commit5d6db0936ff45338b3135bde1b2310fcb8f32c58 (patch)
treec4050944d30d1075ccc20ff07c11b0595fcd3398 /src/gstreamer
parentdb50b1072a94a0b004f5099a7def5a7d0294bb50 (diff)
gst: pad: Add method to store retrieve pending buffers
These will be useful for streaming. The requestComplete callback will store the buffers on each pads so that the _run() can pick them up and push them through the pads from a streaming thread. Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/gstreamer')
-rw-r--r--src/gstreamer/gstlibcamerapad.cpp27
-rw-r--r--src/gstreamer/gstlibcamerapad.h4
2 files changed, 31 insertions, 0 deletions
diff --git a/src/gstreamer/gstlibcamerapad.cpp b/src/gstreamer/gstlibcamerapad.cpp
index 8616e067..49dd35b8 100644
--- a/src/gstreamer/gstlibcamerapad.cpp
+++ b/src/gstreamer/gstlibcamerapad.cpp
@@ -18,6 +18,7 @@ struct _GstLibcameraPad {
GstPad parent;
StreamRole role;
GstLibcameraPool *pool;
+ GQueue pending_buffers;
};
enum {
@@ -137,3 +138,29 @@ gst_libcamera_pad_get_stream(GstPad *pad)
return nullptr;
}
+
+void
+gst_libcamera_pad_queue_buffer(GstPad *pad, GstBuffer *buffer)
+{
+ auto *self = GST_LIBCAMERA_PAD(pad);
+ GLibLocker lock(GST_OBJECT(self));
+
+ g_queue_push_head(&self->pending_buffers, buffer);
+}
+
+GstFlowReturn
+gst_libcamera_pad_push_pending(GstPad *pad)
+{
+ auto *self = GST_LIBCAMERA_PAD(pad);
+ GstBuffer *buffer;
+
+ {
+ GLibLocker lock(GST_OBJECT(self));
+ buffer = GST_BUFFER(g_queue_pop_tail(&self->pending_buffers));
+ }
+
+ if (!buffer)
+ return GST_FLOW_OK;
+
+ return gst_pad_push(pad, buffer);
+}
diff --git a/src/gstreamer/gstlibcamerapad.h b/src/gstreamer/gstlibcamerapad.h
index f7dfc281..2e9ec202 100644
--- a/src/gstreamer/gstlibcamerapad.h
+++ b/src/gstreamer/gstlibcamerapad.h
@@ -26,4 +26,8 @@ void gst_libcamera_pad_set_pool(GstPad *pad, GstLibcameraPool *pool);
libcamera::Stream *gst_libcamera_pad_get_stream(GstPad *pad);
+void gst_libcamera_pad_queue_buffer(GstPad *pad, GstBuffer *buffer);
+
+GstFlowReturn gst_libcamera_pad_push_pending(GstPad *pad);
+
#endif /* __GST_LIBCAMERA_PAD_H__ */