From patchwork Thu Feb 27 20:04:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolas Dufresne X-Patchwork-Id: 2903 Return-Path: Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 0E96262730 for ; Thu, 27 Feb 2020 21:04:28 +0100 (CET) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: nicolas) with ESMTPSA id 7A8A529654B From: Nicolas Dufresne To: libcamera-devel@lists.libcamera.org Date: Thu, 27 Feb 2020 15:04:01 -0500 Message-Id: <20200227200407.490616-22-nicolas.dufresne@collabora.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200227200407.490616-1-nicolas.dufresne@collabora.com> References: <20200227200407.490616-1-nicolas.dufresne@collabora.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v2 21/27] gst: pad: Add method to store retrieve pending buffers X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 27 Feb 2020 20:04:31 -0000 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 Reviewed-by: Laurent Pinchart --- src/gstreamer/gstlibcamerapad.cpp | 27 +++++++++++++++++++++++++++ src/gstreamer/gstlibcamerapad.h | 4 ++++ 2 files changed, 31 insertions(+) diff --git a/src/gstreamer/gstlibcamerapad.cpp b/src/gstreamer/gstlibcamerapad.cpp index 4f96546..8662c92 100644 --- a/src/gstreamer/gstlibcamerapad.cpp +++ b/src/gstreamer/gstlibcamerapad.cpp @@ -17,6 +17,7 @@ struct _GstLibcameraPad { GstPad parent; StreamRole role; GstLibcameraPool *pool; + GQueue pending_buffers; }; enum { @@ -136,3 +137,29 @@ 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_CUSTOM_SUCCESS; + + return gst_pad_push(pad, buffer); +} diff --git a/src/gstreamer/gstlibcamerapad.h b/src/gstreamer/gstlibcamerapad.h index 81d0d58..d928570 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__ */