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54351a0129
Reduce start-capture workload by moving the elements' state reseting to the finishing steps of the capture. This reduces the time start-capture takes to actually start a capture and return to its caller, improving user experience. As the elements' state reset is now triggered from the message handling function, it needs to spawn a new thread, changing state from the pad's task would cause a deadlock.
163 lines
5.1 KiB
C
163 lines
5.1 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 enum _GstCameraBinVideoState
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{
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GST_CAMERA_BIN_VIDEO_IDLE=0,
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GST_CAMERA_BIN_VIDEO_STARTING=1,
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GST_CAMERA_BIN_VIDEO_RECORDING=2,
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GST_CAMERA_BIN_VIDEO_FINISHING=3
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} GstCameraBinVideoState;
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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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GMutex *video_capture_mutex;
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GCond *video_state_cond;
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GstCameraBinVideoState video_state;
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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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