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c7db5db632
Rename the image taglists' mutex into image capture mutex and use it also for the image capture list to prevent concurrent access from different threads (application and capture threads).
151 lines
4.8 KiB
C
151 lines
4.8 KiB
C
/* GStreamer
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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 _GST_CAMERA_BIN2_H_
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#define _GST_CAMERA_BIN2_H_
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#include <gst/gst.h>
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#include <gst/pbutils/encoding-profile.h>
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G_BEGIN_DECLS
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#define GST_TYPE_CAMERA_BIN2 (gst_camera_bin2_get_type())
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#define GST_CAMERA_BIN2(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_CAMERA_BIN2,GstCameraBin2))
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#define GST_CAMERA_BIN2_CAST(obj) ((GstCameraBin2 *) obj)
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#define GST_CAMERA_BIN2_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_CAMERA_BIN2,GstCameraBin2Class))
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#define GST_IS_CAMERA_BIN2(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_CAMERA_BIN2))
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#define GST_IS_CAMERA_BIN2_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_CAMERA_BIN2))
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typedef enum
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{
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/* matches GstEncFlags GST_ENC_FLAG_NO_AUDIO_CONVERSION in encodebin */
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GST_CAM_FLAG_NO_AUDIO_CONVERSION = (1 << 0),
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/* matches GstEncFlags GST_ENC_FLAG_NO_VIDEO_CONVERSION in encodebin */
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GST_CAM_FLAG_NO_VIDEO_CONVERSION = (1 << 1),
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/* maps to 'disable-converters' property in viewfinderbin */
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GST_CAM_FLAG_NO_VIEWFINDER_CONVERSION = (1 << 2),
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/* maps to GstEncFlags GST_ENC_FLAG_NO_VIDEO_CONVERSION in the image bin's
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* encodebin */
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GST_CAM_FLAG_NO_IMAGE_CONVERSION = (1 << 3)
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} GstCamFlags;
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typedef struct _GstCameraBin2 GstCameraBin2;
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typedef struct _GstCameraBin2Class GstCameraBin2Class;
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struct _GstCameraBin2
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{
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GstPipeline pipeline;
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GstElement *src;
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GstElement *user_src;
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gulong src_capture_notify_id;
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GstElement *video_encodebin;
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gulong video_encodebin_signal_id;
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GstElement *videosink;
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GstElement *videobin_capsfilter;
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GstElement *viewfinderbin;
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GstElement *viewfinderbin_queue;
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GstElement *viewfinderbin_capsfilter;
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GstElement *image_encodebin;
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gulong image_encodebin_signal_id;
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GstElement *imagesink;
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GstElement *imagebin_capsfilter;
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GstElement *video_filter;
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GstElement *image_filter;
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GstElement *viewfinder_filter;
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GstElement *audio_filter;
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GstElement *user_video_filter;
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GstElement *user_image_filter;
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GstElement *user_viewfinder_filter;
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GstElement *user_audio_filter;
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GstElement *audio_src;
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GstElement *user_audio_src;
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GstElement *audio_volume;
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GstElement *audio_capsfilter;
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gint processing_counter; /* atomic int */
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/* Index of the auto incrementing file index for captures */
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gint capture_index;
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GMutex *image_capture_mutex;
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/* stores list of image locations to be pushed to the image sink
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* as file location change notifications, they are pushed before
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* each buffer capture */
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GSList *image_location_list;
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/* Store also tags and push them before each captured image */
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GSList *image_tags_list;
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/*
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* Similar to above, but used for giving names to previews
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*
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* Need to protect with a mutex as this list is used when the
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* camera-source posts a preview image. As we have no control
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* on how the camera-source will behave (we can only tell how
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* it should), the preview location list might be used in an
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* inconsistent way.
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* One example is the camera-source posting a preview image after
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* camerabin2 was put to ready, when this preview list will be
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* freed and set to NULL. Concurrent access might lead to crashes in
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* this situation. (Concurrency from the state-change freeing the
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* list and the message handling function looking at preview names)
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*/
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GSList *preview_location_list;
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GMutex *preview_list_mutex;
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gboolean video_profile_switch;
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gboolean image_profile_switch;
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gboolean audio_drop_eos;
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/* properties */
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gint mode;
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gchar *location;
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gboolean post_previews;
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GstCaps *preview_caps;
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GstElement *preview_filter;
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GstEncodingProfile *video_profile;
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GstEncodingProfile *image_profile;
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gfloat zoom;
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gfloat max_zoom;
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GstCamFlags flags;
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gboolean elements_created;
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};
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struct _GstCameraBin2Class
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{
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GstPipelineClass pipeline_class;
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/* Action signals */
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void (*start_capture) (GstCameraBin2 * camera);
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void (*stop_capture) (GstCameraBin2 * camera);
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};
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GType gst_camera_bin2_get_type (void);
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gboolean gst_camera_bin2_plugin_init (GstPlugin * plugin);
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G_END_DECLS
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#endif
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