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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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de138dbc57
Create preview pipeline already in initialization phase. This speeds up NULL_TO_READY state change. Also implement a separate function for setting the preview filter element. This also restricts the preview filter property to work only on NULL state.
146 lines
4.8 KiB
C
146 lines
4.8 KiB
C
/*
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* GStreamer
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* Copyright (C) 2010 Texas Instruments, Inc
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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 __GST_BASE_CAMERA_SRC_H__
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#define __GST_BASE_CAMERA_SRC_H__
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#ifndef GST_USE_UNSTABLE_API
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#warning "GstBaseCameraSrc is unstable API and may change in future."
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#warning "You can define GST_USE_UNSTABLE_API to avoid this warning."
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#endif
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#include <gst/gst.h>
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#include <gst/gstbin.h>
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#include <gst/interfaces/photography.h>
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#include <gst/interfaces/colorbalance.h>
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#include "gstcamerabin-enum.h"
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#include "gstcamerabinpreview.h"
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G_BEGIN_DECLS
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#define GST_TYPE_BASE_CAMERA_SRC \
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(gst_base_camera_src_get_type())
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#define GST_BASE_CAMERA_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BASE_CAMERA_SRC,GstBaseCameraSrc))
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#define GST_BASE_CAMERA_SRC_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BASE_CAMERA_SRC, GstBaseCameraSrcClass))
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#define GST_BASE_CAMERA_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BASE_CAMERA_SRC,GstBaseCameraSrcClass))
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#define GST_IS_BASE_CAMERA_SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BASE_CAMERA_SRC))
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#define GST_IS_BASE_CAMERA_SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BASE_CAMERA_SRC))
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#define GST_BASE_CAMERA_SRC_CAST(obj) \
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((GstBaseCameraSrc *) (obj))
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GType gst_base_camera_src_get_type (void);
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typedef struct _GstBaseCameraSrc GstBaseCameraSrc;
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typedef struct _GstBaseCameraSrcClass GstBaseCameraSrcClass;
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#define GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME "vfsrc"
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#define GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME "imgsrc"
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#define GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME "vidsrc"
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#define GST_BASE_CAMERA_SRC_PREVIEW_MESSAGE_NAME "preview-image"
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/**
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* GstBaseCameraSrc:
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*/
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struct _GstBaseCameraSrc
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{
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GstBin parent;
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GstCameraBinMode mode;
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gboolean capturing;
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GMutex *capturing_mutex;
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/* Preview convert pipeline */
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GstCaps *preview_caps;
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gboolean post_preview;
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GstElement *preview_filter;
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GstCameraBinPreviewPipelineData *preview_pipeline;
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/* Resolution of the buffers configured to camerabin */
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gint width;
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gint height;
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gfloat zoom;
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gfloat max_zoom;
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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/**
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* GstBaseCameraSrcClass:
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* @construct_pipeline: construct pipeline
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* @setup_pipeline: configure pipeline for the chosen settings
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* @set_zoom: set the zoom
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* @set_mode: set the mode
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*/
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struct _GstBaseCameraSrcClass
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{
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GstBinClass parent;
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/* Construct pipeline. (called in GST_STATE_CHANGE_NULL_TO_READY) Optional. */
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gboolean (*construct_pipeline) (GstBaseCameraSrc *self);
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/* (called in GST_STATE_CHANGE_READY_TO_PAUSED). Optional. */
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gboolean (*setup_pipeline) (GstBaseCameraSrc *self);
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/* Set the zoom. If set, called when changing 'zoom' property. Optional. */
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void (*set_zoom) (GstBaseCameraSrc *self, gfloat zoom);
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/* Set the mode. If set, called when changing 'mode' property. Optional. */
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gboolean (*set_mode) (GstBaseCameraSrc *self,
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GstCameraBinMode mode);
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/* Set preview caps. If set, called called when setting new 'preview-caps'. Optional. */
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gboolean (*set_preview) (GstBaseCameraSrc *self,
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GstCaps *preview_caps);
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/* Called by the handler for 'start-capture'. Mandatory. */
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gboolean (*start_capture) (GstBaseCameraSrc * src);
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/* Called by the handler for 'stop-capture'. Mandatory. */
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void (*stop_capture) (GstBaseCameraSrc * src);
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gpointer _gst_reserved[GST_PADDING_LARGE];
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};
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#define MIN_ZOOM 1.0f
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#define MAX_ZOOM 10.0f
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#define ZOOM_1X MIN_ZOOM
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GstPhotography * gst_base_camera_src_get_photography (GstBaseCameraSrc *self);
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GstColorBalance * gst_base_camera_src_get_color_balance (GstBaseCameraSrc *self);
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gboolean gst_base_camera_src_set_mode (GstBaseCameraSrc *self, GstCameraBinMode mode);
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void gst_base_camera_src_setup_zoom (GstBaseCameraSrc * self);
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void gst_base_camera_src_setup_preview (GstBaseCameraSrc * self, GstCaps * preview_caps);
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void gst_base_camera_src_finish_capture (GstBaseCameraSrc *self);
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void gst_base_camera_src_post_preview (GstBaseCameraSrc *self, GstBuffer * buf);
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// XXX add methods to get/set img capture and vid capture caps..
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#endif /* __GST_BASE_CAMERA_SRC_H__ */
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