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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-03-30 04:45:36 +00:00
camerabin2: Move preview helper functions to basecamerabinsrc
Move preview helper functions to baseacamerabinsrc so they can be reused by multiple camerabin2 sources.
This commit is contained in:
Thiago Santos
parent
9473c390e8
commit
0255584d90
6 changed files with 274 additions and 214 deletions
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@ -5,11 +5,13 @@ CLEANFILES = $(BUILT_SOURCES)
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libgstbasecamerabinsrc_@GST_MAJORMINOR@_la_SOURCES = \
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gstcamerabin-enum.c \
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gstcamerabinpreview.c \
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gstbasecamerasrc.c
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libgstbasecamerabinsrc_@GST_MAJORMINOR@includedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/basecamerabinsrc
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libgstbasecamerabinsrc_@GST_MAJORMINOR@include_HEADERS = \
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gstcamerabin-enum.h \
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gstcamerabinpreview.h \
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gstbasecamerasrc.h
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libgstbasecamerabinsrc_@GST_MAJORMINOR@_la_CFLAGS = \
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@ -20,7 +22,7 @@ libgstbasecamerabinsrc_@GST_MAJORMINOR@_la_CFLAGS = \
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libgstbasecamerabinsrc_@GST_MAJORMINOR@_la_LIBADD = \
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$(top_builddir)/gst-libs/gst/interfaces/libgstphotography-@GST_MAJORMINOR@.la \
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$(GST_PLUGINS_BASE_LIBS) -lgstinterfaces-$(GST_MAJORMINOR) \
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$(GST_BASE_LIBS) $(GST_LIBS)
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-lgstapp-$(GST_MAJORMINOR) $(GST_BASE_LIBS) $(GST_LIBS)
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libgstbasecamerabinsrc_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
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226
gst-libs/gst/basecamerabinsrc/gstcamerabinpreview.c
Normal file
226
gst-libs/gst/basecamerabinsrc/gstcamerabinpreview.c
Normal file
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@ -0,0 +1,226 @@
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/*
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* GStreamer
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* Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:camerabingeneral
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* @short_description: helper functions for #GstCameraBin and it's modules
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*
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* Common helper functions for #GstCameraBin, #GstCameraBinImage and
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* #GstCameraBinVideo.
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*
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*/
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#include <gst/app/gstappsrc.h>
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#include <gst/app/gstappsink.h>
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#include "gstcamerabinpreview.h"
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#include "gstbasecamerasrc.h"
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static GstFlowReturn
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gst_camerabin_preview_pipeline_new_preroll (GstAppSink * appsink,
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gpointer user_data)
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{
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GstBuffer *buffer;
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buffer = gst_app_sink_pull_preroll (appsink);
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gst_buffer_unref (buffer);
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_camerabin_preview_pipeline_new_buffer (GstAppSink * appsink,
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gpointer user_data)
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{
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GstBuffer *buffer;
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GstStructure *s;
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GstMessage *msg;
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GstCameraBinPreviewPipelineData *data;
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data = user_data;
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buffer = gst_app_sink_pull_buffer (appsink);
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s = gst_structure_new (GST_BASE_CAMERA_SRC_PREVIEW_MESSAGE_NAME,
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"buffer", GST_TYPE_BUFFER, buffer, NULL);
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gst_buffer_unref (buffer);
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msg = gst_message_new_element (GST_OBJECT (data->element), s);
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GST_DEBUG_OBJECT (data->element, "sending message with preview image");
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if (gst_element_post_message (data->element, msg) == FALSE) {
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GST_WARNING_OBJECT (data->element,
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"This element has no bus, therefore no message sent!");
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}
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return GST_FLOW_OK;
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}
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/**
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* gst_camerabin_create_preview_pipeline:
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* @element: Owner of this pipeline
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* @filter: Custom filter to process preview data (an extra ref is taken)
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*
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* Creates a new previewing pipeline that can receive buffers
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* to be posted as camerabin preview messages for @element
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*
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* Returns: The newly created #GstCameraBinPreviewPipelineData
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*/
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GstCameraBinPreviewPipelineData *
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gst_camerabin_create_preview_pipeline (GstElement * element,
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GstElement * filter)
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{
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GstCameraBinPreviewPipelineData *data;
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GstElement *csp;
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GstElement *csp2;
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GstElement *vscale;
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gboolean added = FALSE;
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GstAppSinkCallbacks callbacks = { 0, };
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data = g_new (GstCameraBinPreviewPipelineData, 1);
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data->pipeline = gst_pipeline_new ("preview-pipeline");
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data->appsrc = gst_element_factory_make ("appsrc", "preview-appsrc");
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data->capsfilter = gst_element_factory_make ("capsfilter",
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"preview-capsfilter");
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data->appsink = gst_element_factory_make ("appsink", "preview-appsink");
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csp = gst_element_factory_make ("ffmpegcolorspace", "preview-csp0");
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csp2 = gst_element_factory_make ("ffmpegcolorspace", "preview-csp1");
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vscale = gst_element_factory_make ("videoscale", "preview-vscale");
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if (!data->appsrc || !data->capsfilter || !data->appsink || !csp ||
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!csp2 || !vscale) {
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goto error;
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}
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gst_bin_add_many (GST_BIN (data->pipeline), data->appsrc, data->capsfilter,
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data->appsink, csp, csp2, vscale, NULL);
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if (filter)
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gst_bin_add (GST_BIN (data->pipeline), gst_object_ref (filter));
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added = TRUE;
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if (filter) {
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if (!gst_element_link_many (data->appsrc, filter, csp, vscale, csp2,
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data->capsfilter, data->appsink, NULL))
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goto error;
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} else {
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if (!gst_element_link_many (data->appsrc, csp, vscale, csp2,
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data->capsfilter, data->appsink, NULL))
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goto error;
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}
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callbacks.new_preroll = gst_camerabin_preview_pipeline_new_preroll;
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callbacks.new_buffer = gst_camerabin_preview_pipeline_new_buffer;
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gst_app_sink_set_callbacks ((GstAppSink *) data->appsink, &callbacks, data,
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NULL);
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g_object_set (data->appsink, "sync", FALSE, NULL);
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data->element = element;
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data->filter = filter;
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return data;
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error:
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GST_WARNING ("Failed to create camerabin's preview pipeline");
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if (!added) {
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if (csp)
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gst_object_unref (csp);
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if (csp2)
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gst_object_unref (csp2);
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if (vscale)
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gst_object_unref (vscale);
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if (data->appsrc)
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gst_object_unref (data->appsrc);
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if (data->capsfilter)
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gst_object_unref (data->capsfilter);
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if (data->appsink)
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gst_object_unref (data->appsink);
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}
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gst_camerabin_destroy_preview_pipeline (data);
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return NULL;
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}
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/**
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* gst_camerabin_destroy_preview_pipeline:
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* @preview: the #GstCameraBinPreviewPipelineData
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*
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* Frees a #GstCameraBinPreviewPipelineData
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*/
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void
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gst_camerabin_destroy_preview_pipeline (GstCameraBinPreviewPipelineData *
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preview)
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{
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if (preview->pipeline) {
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gst_element_set_state (preview->pipeline, GST_STATE_NULL);
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gst_object_unref (preview->pipeline);
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}
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g_free (preview);
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}
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/**
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* gst_camerabin_preview_pipeline_post:
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* @preview: the #GstCameraBinPreviewPipelineData
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* @buffer: the buffer to be posted as a preview
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*
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* Converts the @buffer to the desired format and posts the preview
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* message to the bus.
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*
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* Returns: %TRUE on success
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*/
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gboolean
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gst_camerabin_preview_pipeline_post (GstCameraBinPreviewPipelineData * preview,
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GstBuffer * buffer)
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{
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g_return_val_if_fail (preview != NULL, FALSE);
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g_return_val_if_fail (preview->pipeline != NULL, FALSE);
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g_return_val_if_fail (buffer, FALSE);
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gst_app_src_push_buffer ((GstAppSrc *) preview->appsrc,
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gst_buffer_ref (buffer));
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return TRUE;
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}
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/**
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* gst_camerabin_preview_set_caps:
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* @preview: the #GstCameraBinPreviewPipelineData
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* @caps: the #GstCaps to be set
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*
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* The caps that preview buffers should have when posted
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* on the bus
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*/
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void
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gst_camerabin_preview_set_caps (GstCameraBinPreviewPipelineData * preview,
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GstCaps * caps)
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{
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GstState state, pending;
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GstStateChangeReturn ret;
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g_return_if_fail (preview != NULL);
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ret = gst_element_get_state (preview->pipeline, &state, &pending, 0);
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if (ret == GST_STATE_CHANGE_FAILURE) {
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/* make it try again */
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state = GST_STATE_PLAYING;
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pending = GST_STATE_VOID_PENDING;
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}
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gst_element_set_state (preview->pipeline, GST_STATE_NULL);
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g_object_set (preview->capsfilter, "caps", caps, NULL);
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if (pending != GST_STATE_VOID_PENDING)
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state = pending;
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gst_element_set_state (preview->pipeline, state);
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}
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44
gst-libs/gst/basecamerabinsrc/gstcamerabinpreview.h
Normal file
44
gst-libs/gst/basecamerabinsrc/gstcamerabinpreview.h
Normal file
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@ -0,0 +1,44 @@
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/*
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* GStreamer
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* Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>
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* Copyright (C) 2010 Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __CAMERABIN_PREVIEW_H_
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#define __CAMERABIN_PREVIEW_H_
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#include <gst/gst.h>
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typedef struct
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{
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GstElement *pipeline;
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GstElement *appsrc;
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GstElement *filter;
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GstElement *capsfilter;
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GstElement *appsink;
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GstElement *element;
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} GstCameraBinPreviewPipelineData;
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GstCameraBinPreviewPipelineData *gst_camerabin_create_preview_pipeline (GstElement * element, GstElement * filter);
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void gst_camerabin_destroy_preview_pipeline (GstCameraBinPreviewPipelineData * preview);
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gboolean gst_camerabin_preview_pipeline_post (GstCameraBinPreviewPipelineData * preview, GstBuffer * buffer);
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void gst_camerabin_preview_set_caps (GstCameraBinPreviewPipelineData * preview, GstCaps * caps);
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#endif /* #ifndef __CAMERABIN_PREVIEW_H_ */
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@ -29,8 +29,6 @@
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#include <string.h>
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#include <glib.h>
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#include <gst/app/gstappsrc.h>
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#include <gst/app/gstappsink.h>
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#include <gst/basecamerabinsrc/gstbasecamerasrc.h>
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#include "camerabingeneral.h"
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@ -278,197 +276,3 @@ gst_camerabin_drop_eos_probe (GstPad * pad, GstEvent * event, gpointer u_data)
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}
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return ret;
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}
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static GstFlowReturn
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gst_camerabin_preview_pipeline_new_preroll (GstAppSink * appsink,
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gpointer user_data)
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{
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GstBuffer *buffer;
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buffer = gst_app_sink_pull_preroll (appsink);
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gst_buffer_unref (buffer);
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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gst_camerabin_preview_pipeline_new_buffer (GstAppSink * appsink,
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gpointer user_data)
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{
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GstBuffer *buffer;
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GstStructure *s;
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GstMessage *msg;
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GstCameraBinPreviewPipelineData *data;
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data = user_data;
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buffer = gst_app_sink_pull_buffer (appsink);
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s = gst_structure_new (GST_BASE_CAMERA_SRC_PREVIEW_MESSAGE_NAME,
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"buffer", GST_TYPE_BUFFER, buffer, NULL);
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gst_buffer_unref (buffer);
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msg = gst_message_new_element (GST_OBJECT (data->element), s);
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GST_DEBUG_OBJECT (data->element, "sending message with preview image");
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if (gst_element_post_message (data->element, msg) == FALSE) {
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GST_WARNING_OBJECT (data->element,
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"This element has no bus, therefore no message sent!");
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}
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return GST_FLOW_OK;
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}
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/**
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* gst_camerabin_create_preview_pipeline:
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* @element: Owner of this pipeline
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* @filter: Custom filter to process preview data (an extra ref is taken)
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*
|
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* Creates a new previewing pipeline that can receive buffers
|
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* to be posted as camerabin preview messages for @element
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*
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* Returns: The newly created #GstCameraBinPreviewPipelineData
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*/
|
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GstCameraBinPreviewPipelineData *
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gst_camerabin_create_preview_pipeline (GstElement * element,
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GstElement * filter)
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{
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GstCameraBinPreviewPipelineData *data;
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GstElement *csp;
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GstElement *csp2;
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GstElement *vscale;
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gboolean added = FALSE;
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GstAppSinkCallbacks callbacks = { 0, };
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data = g_new (GstCameraBinPreviewPipelineData, 1);
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data->pipeline = gst_pipeline_new ("preview-pipeline");
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data->appsrc = gst_element_factory_make ("appsrc", "preview-appsrc");
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data->capsfilter = gst_element_factory_make ("capsfilter",
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"preview-capsfilter");
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data->appsink = gst_element_factory_make ("appsink", "preview-appsink");
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csp = gst_element_factory_make ("ffmpegcolorspace", "preview-csp0");
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csp2 = gst_element_factory_make ("ffmpegcolorspace", "preview-csp1");
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vscale = gst_element_factory_make ("videoscale", "preview-vscale");
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if (!data->appsrc || !data->capsfilter || !data->appsink || !csp ||
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!csp2 || !vscale) {
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goto error;
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}
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gst_bin_add_many (GST_BIN (data->pipeline), data->appsrc, data->capsfilter,
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data->appsink, csp, csp2, vscale, NULL);
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if (filter)
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gst_bin_add (GST_BIN (data->pipeline), gst_object_ref (filter));
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added = TRUE;
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if (filter) {
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if (!gst_element_link_many (data->appsrc, filter, csp, vscale, csp2,
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data->capsfilter, data->appsink, NULL))
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goto error;
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} else {
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if (!gst_element_link_many (data->appsrc, csp, vscale, csp2,
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data->capsfilter, data->appsink, NULL))
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goto error;
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}
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callbacks.new_preroll = gst_camerabin_preview_pipeline_new_preroll;
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callbacks.new_buffer = gst_camerabin_preview_pipeline_new_buffer;
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gst_app_sink_set_callbacks ((GstAppSink *) data->appsink, &callbacks, data,
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NULL);
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g_object_set (data->appsink, "sync", FALSE, NULL);
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data->element = element;
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data->filter = filter;
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return data;
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error:
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GST_WARNING ("Failed to create camerabin's preview pipeline");
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if (!added) {
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if (csp)
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gst_object_unref (csp);
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if (csp2)
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gst_object_unref (csp2);
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if (vscale)
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gst_object_unref (vscale);
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if (data->appsrc)
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gst_object_unref (data->appsrc);
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if (data->capsfilter)
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gst_object_unref (data->capsfilter);
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if (data->appsink)
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gst_object_unref (data->appsink);
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}
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||||
gst_camerabin_destroy_preview_pipeline (data);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_camerabin_destroy_preview_pipeline:
|
||||
* @preview: the #GstCameraBinPreviewPipelineData
|
||||
*
|
||||
* Frees a #GstCameraBinPreviewPipelineData
|
||||
*/
|
||||
void
|
||||
gst_camerabin_destroy_preview_pipeline (GstCameraBinPreviewPipelineData *
|
||||
preview)
|
||||
{
|
||||
if (preview->pipeline) {
|
||||
gst_element_set_state (preview->pipeline, GST_STATE_NULL);
|
||||
gst_object_unref (preview->pipeline);
|
||||
}
|
||||
g_free (preview);
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_camerabin_preview_pipeline_post:
|
||||
* @preview: the #GstCameraBinPreviewPipelineData
|
||||
* @buffer: the buffer to be posted as a preview
|
||||
*
|
||||
* Converts the @buffer to the desired format and posts the preview
|
||||
* message to the bus.
|
||||
*
|
||||
* Returns: %TRUE on success
|
||||
*/
|
||||
gboolean
|
||||
gst_camerabin_preview_pipeline_post (GstCameraBinPreviewPipelineData * preview,
|
||||
GstBuffer * buffer)
|
||||
{
|
||||
g_return_val_if_fail (preview != NULL, FALSE);
|
||||
g_return_val_if_fail (preview->pipeline != NULL, FALSE);
|
||||
g_return_val_if_fail (buffer, FALSE);
|
||||
|
||||
gst_app_src_push_buffer ((GstAppSrc *) preview->appsrc,
|
||||
gst_buffer_ref (buffer));
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/**
|
||||
* gst_camerabin_preview_set_caps:
|
||||
* @preview: the #GstCameraBinPreviewPipelineData
|
||||
* @caps: the #GstCaps to be set
|
||||
*
|
||||
* The caps that preview buffers should have when posted
|
||||
* on the bus
|
||||
*/
|
||||
void
|
||||
gst_camerabin_preview_set_caps (GstCameraBinPreviewPipelineData * preview,
|
||||
GstCaps * caps)
|
||||
{
|
||||
GstState state, pending;
|
||||
GstStateChangeReturn ret;
|
||||
|
||||
g_return_if_fail (preview != NULL);
|
||||
|
||||
ret = gst_element_get_state (preview->pipeline, &state, &pending, 0);
|
||||
if (ret == GST_STATE_CHANGE_FAILURE) {
|
||||
/* make it try again */
|
||||
state = GST_STATE_PLAYING;
|
||||
pending = GST_STATE_VOID_PENDING;
|
||||
}
|
||||
|
||||
gst_element_set_state (preview->pipeline, GST_STATE_NULL);
|
||||
g_object_set (preview->capsfilter, "caps", caps, NULL);
|
||||
if (pending != GST_STATE_VOID_PENDING)
|
||||
state = pending;
|
||||
gst_element_set_state (preview->pipeline, state);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -23,23 +23,6 @@
|
|||
|
||||
#include <gst/gst.h>
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GstElement *pipeline;
|
||||
|
||||
GstElement *appsrc;
|
||||
GstElement *filter;
|
||||
GstElement *capsfilter;
|
||||
GstElement *appsink;
|
||||
|
||||
GstElement *element;
|
||||
} GstCameraBinPreviewPipelineData;
|
||||
|
||||
GstCameraBinPreviewPipelineData *gst_camerabin_create_preview_pipeline (GstElement * element, GstElement * filter);
|
||||
void gst_camerabin_destroy_preview_pipeline (GstCameraBinPreviewPipelineData * preview);
|
||||
gboolean gst_camerabin_preview_pipeline_post (GstCameraBinPreviewPipelineData * preview, GstBuffer * buffer);
|
||||
void gst_camerabin_preview_set_caps (GstCameraBinPreviewPipelineData * preview, GstCaps * caps);
|
||||
|
||||
gboolean gst_camerabin_try_add_element (GstBin * bin, const gchar * srcpad, GstElement * new_elem, const gchar * dstpad);
|
||||
gboolean gst_camerabin_add_element (GstBin * bin, GstElement * new_elem);
|
||||
gboolean gst_camerabin_add_element_full (GstBin * bin, const gchar * srcpad, GstElement * new_elem, const gchar * dstpad);
|
||||
|
|
|
|||
|
|
@ -25,6 +25,7 @@
|
|||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/basecamerabinsrc/gstbasecamerasrc.h>
|
||||
#include <gst/basecamerabinsrc/gstcamerabinpreview.h>
|
||||
#include "camerabingeneral.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
|
|
|||
Loading…
Reference in a new issue