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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3b549c4dbd
When switching capture caps, camerabin1 resets its state to ready to force a new caps to be negotiated. This causes ongoing captures to be aborted. This commit adds a condition to wait for captures to finish before going to ready state.
237 lines
6.9 KiB
C
237 lines
6.9 KiB
C
/*
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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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#ifndef __GST_CAMERABIN_H__
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#define __GST_CAMERABIN_H__
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <gst/gstbin.h>
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#include <gst/interfaces/photography.h>
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#include "gstcamerabin-enum.h"
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#include "camerabinimage.h"
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#include "camerabinvideo.h"
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#include "camerabinpreview.h"
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G_BEGIN_DECLS
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/* #defines don't like whitespacey bits */
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#define GST_TYPE_CAMERABIN \
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(gst_camerabin_get_type())
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#define GST_CAMERABIN(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAMERABIN,GstCameraBin))
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#define GST_CAMERABIN_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAMERABIN,GstCameraBinClass))
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#define GST_IS_CAMERABIN(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAMERABIN))
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#define GST_IS_CAMERABIN_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAMERABIN))
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typedef struct _GstCameraBin GstCameraBin;
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typedef struct _GstCameraBinClass GstCameraBinClass;
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/**
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* GstCameraBin:
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*
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* The opaque #GstCameraBin structure.
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*/
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struct _GstCameraBin
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{
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GstPipeline parent;
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/* private */
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GString *filename;
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gint mode; /* MODE_IMAGE or MODE_VIDEO */
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GstCameraBinFlags flags;
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gboolean stop_requested; /* TRUE if capturing stop needed */
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gboolean paused; /* TRUE if capturing paused */
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/*
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* Those 2 booleans work together.
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*
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* 'block_viewfinder_prop' is the property, 'block_viewfinder_trigger'
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* is the flag that actually makes the viewfinder block after capture.
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* We need both to avoid blocking the viewfinder if the application resets
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* the flag after issuing the 'capture-start', but before the actual
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* blocking happens. This causes the viewfinder to block even though
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* the application resetted the flag to keep it running already.
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*
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* Here's how this should work:
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* When a capture is started, the property is checked, if it is TRUE, the
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* trigger is set to TRUE. The blocking will only happen if
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* the trigger is TRUE after image capture finishes, ff the property
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* is reset before the blocking happens, the trigger goes to
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* FALSE and no blocking happens.
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*/
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gboolean block_viewfinder_prop; /* TRUE if viewfinder blocks after capture */
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gboolean block_viewfinder_trigger;
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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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/* Frames per second configured to camerabin */
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gint fps_n;
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gint fps_d;
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/* app configured resolution/framerate */
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gint app_width;
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gint app_height;
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gint app_fps_n;
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gint app_fps_d;
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gboolean video_capture_caps_update;
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/* Image capture resolution */
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gint image_capture_width;
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gint image_capture_height;
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/* Image tags are collected here first before sending to imgbin */
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GstTagList *event_tags;
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/* Caps applied to capsfilters when taking still image */
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GstCaps *image_capture_caps;
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gboolean image_capture_caps_update;
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/* Caps applied to capsfilters when in view finder mode */
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GstCaps *view_finder_caps;
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/* Caps that videosrc supports */
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GstCaps *allowed_caps;
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/* Caps used to create preview image */
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GstCaps *preview_caps;
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/* Caps used to create video preview image */
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GstCaps *video_preview_caps;
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/* The digital zoom (from 1.0 to 10.0) */
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gfloat zoom;
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/* concurrency control */
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GMutex *capture_mutex;
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GCond *cond;
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GCond *idle_cond;
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gboolean capturing;
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gboolean eos_handled;
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/* everytime a new capture is started this is incremented, when it is
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* finished/fails it is decremented. Used to know if camerabin is idle */
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gint processing_counter;
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/* pad names for output and input selectors */
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GstPad *pad_src_view;
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GstPad *pad_view_src;
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GstPad *pad_src_img;
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GstPad *pad_src_vid;
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GstPad *pad_view_vid;
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GstPad *pad_src_queue;
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GstElement *img_queue; /* queue for decoupling capture from
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image-postprocessing and saving */
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GstElement *imgbin; /* bin that holds image capturing elements */
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GstElement *vidbin; /* bin that holds video capturing elements */
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GstElement *active_bin; /* image or video bin that is currently in use */
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/* pipeline for creating preview images */
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GstCameraBinPreviewPipelineData *preview_pipeline;
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/* pipeline for creating video preview image */
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GstCameraBinPreviewPipelineData *video_preview_pipeline;
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GstBuffer *video_preview_buffer; /* buffer for storing video preview */
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/* source elements */
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GstElement *src_vid_src;
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GstElement *src_filter;
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GstElement *src_zoom_crop;
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GstElement *src_zoom_scale;
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GstElement *src_zoom_filter;
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GstElement *src_out_sel;
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/* view finder elements */
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GstElement *view_in_sel;
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GstElement *aspect_filter;
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GstElement *view_scale;
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GstElement *view_sink;
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/* Application configurable elements */
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GstElement *app_vid_src;
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GstElement *app_vf_sink;
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GstElement *app_video_filter;
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GstElement *app_viewfinder_filter;
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GstElement *app_preview_source_filter;
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GstElement *app_video_preview_source_filter;
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/* Night mode handling */
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gboolean night_mode;
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gint pre_night_fps_n;
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gint pre_night_fps_d;
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/* Buffer probe id for captured image handling */
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gulong image_captured_id;
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/* Optional base crop for frames. Used to crop frames e.g.
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due to wrong aspect ratio, before the crop related to zooming. */
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gint base_crop_top;
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gint base_crop_bottom;
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gint base_crop_left;
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gint base_crop_right;
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};
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/**
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* GstCameraBinClass:
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*
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* The #GstCameraBin class structure.
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*/
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struct _GstCameraBinClass
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{
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GstPipelineClass parent_class;
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/* action signals */
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void (*capture_start) (GstCameraBin * camera);
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void (*capture_stop) (GstCameraBin * camera);
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void (*capture_pause) (GstCameraBin * camera);
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void (*set_video_resolution_fps) (GstCameraBin * camera, gint width,
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gint height, gint fps_n, gint fps_d);
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void (*set_image_resolution) (GstCameraBin * camera, gint width, gint height);
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/* signals (callback) */
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gboolean (*img_done) (GstCameraBin * camera, const gchar * filename);
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};
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/**
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* GstCameraBinMode:
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* @MODE_IMAGE: image capture
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* @MODE_VIDEO: video capture
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*
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* Capture mode to use.
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*/
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typedef enum
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{
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MODE_IMAGE = 0,
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MODE_VIDEO
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} GstCameraBinMode;
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GType gst_camerabin_get_type (void);
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G_END_DECLS
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#endif /* #ifndef __GST_CAMERABIN_H__ */
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