mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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b4d1d31ded
Original commit message from CVS: a few internal changes: - put last_update_timestamp into GstDParam - added a GstDParamUpdateInfo enum to the update function so that dparams know what context they are updating in (for example, the first update since the pipeline was started) - rewrote bogus next_timestamp calculation in GstDParamSmooth
174 lines
6.9 KiB
C
174 lines
6.9 KiB
C
/* GStreamer
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* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
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*
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* gstdparammanager.h: Dynamic Parameter group functionality
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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_DPMAN_H__
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#define __GST_DPMAN_H__
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#include <gst/gstobject.h>
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#include <gst/gstprops.h>
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#include <gst/control/dparamcommon.h>
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#include <gst/control/dparam.h>
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#include <gst/control/unitconvert.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_DPMAN (gst_dpman_get_type ())
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#define GST_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPMAN,GstDParamManager))
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#define GST_DPMAN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPMAN,GstDParamManager))
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#define GST_IS_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPMAN))
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#define GST_IS_DPMAN_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPMAN))
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#define GST_DPMAN_NAME(dpman) (GST_OBJECT_NAME(dpman))
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#define GST_DPMAN_PARENT(dpman) (GST_OBJECT_PARENT(dpman))
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#define GST_DPMAN_DPARAMS(dpman) ((dpman)->dparams)
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#define GST_DPMAN_DPARAMS_LIST(dpman) ((dpman)->dparams_list)
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#define GST_DPMAN_MODE_NAME(dpman) ((dpman)->mode_name)
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#define GST_DPMAN_MODE(dpman) ((dpman)->mode)
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#define GST_DPMAN_MODE_DATA(dpman) ((dpman)->mode_data)
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#define GST_DPMAN_RATE(dpman) ((dpman)->rate)
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typedef enum {
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GST_DPMAN_CALLBACK,
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GST_DPMAN_DIRECT,
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GST_DPMAN_ARRAY,
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} GstDPMUpdateMethod;
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typedef struct _GstDParamManagerClass GstDParamManagerClass;
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typedef struct _GstDPMMode GstDPMMode;
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typedef struct _GstDParamWrapper GstDParamWrapper;
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typedef guint (*GstDPMModePreProcessFunction) (GstDParamManager *dpman, guint frames, gint64 timestamp);
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typedef guint (*GstDPMModeProcessFunction) (GstDParamManager *dpman, guint frame_count);
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typedef void (*GstDPMModeSetupFunction) (GstDParamManager *dpman);
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typedef void (*GstDPMModeTeardownFunction) (GstDParamManager *dpman);
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typedef void (*GstDPMUpdateFunction) (const GValue *value, gpointer data);
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struct _GstDParamManager {
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GstObject object;
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GHashTable *dparams;
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GSList *dparams_list;
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gchar *mode_name;
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GstDPMMode* mode;
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gpointer mode_data;
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gint64 timestamp;
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guint rate;
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GstDParamUpdateInfo update_info;
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};
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struct _GstDParamManagerClass {
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GstObjectClass parent_class;
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void (*new_required_dparam) (GstDParamManager *dpman, gchar* dparam_name);
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GHashTable *modes;
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/* signal callbacks */
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};
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struct _GstDPMMode {
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GstDPMModePreProcessFunction preprocessfunc;
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GstDPMModeProcessFunction processfunc;
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GstDPMModeSetupFunction setupfunc;
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GstDPMModeTeardownFunction teardownfunc;
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};
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struct _GstDParamWrapper {
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GParamSpec* param_spec;
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GValue *value;
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GstDParam *dparam;
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GstDPMUpdateMethod update_method;
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gpointer update_data;
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GstDPMUpdateFunction update_func;
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gchar *unit_name;
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};
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#define GST_DPMAN_PREPROCESSFUNC(dpman) (((dpman)->mode)->preprocessfunc)
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#define GST_DPMAN_PROCESSFUNC(dpman) (((dpman)->mode)->processfunc)
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#define GST_DPMAN_SETUPFUNC(dpman) (((dpman)->mode)->setupfunc)
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#define GST_DPMAN_TEARDOWNFUNC(dpman) (((dpman)->mode)->teardownfunc)
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#define GST_DPMAN_PREPROCESS(dpman, buffer_size, timestamp) \
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(GST_DPMAN_PREPROCESSFUNC(dpman)(dpman, buffer_size, timestamp))
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#define GST_DPMAN_PROCESS(dpman, frame_count) \
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(GST_DPMAN_PROCESSFUNC(dpman)(dpman, frame_count))
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#define GST_DPMAN_PROCESS_COUNTDOWN(dpman, frame_countdown, frame_count) \
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(frame_countdown-- || \
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(frame_countdown = GST_DPMAN_PROCESS(dpman, frame_count)))
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#define GST_DPMAN_PROCESS_CHUNK(dpman, frames_to_process, frame_count) \
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(frames_to_process || \
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(frames_to_process = GST_DPMAN_PROCESS(dpman, frame_count)))
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#define GST_DPMAN_DO_UPDATE(dpwrap) ((dpwrap->update_func)(dpwrap->value, dpwrap->update_data))
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void _gst_dpman_initialize();
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GType gst_dpman_get_type (void);
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GstDParamManager* gst_dpman_new (gchar *name, GstElement *parent);
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void gst_dpman_set_parent (GstDParamManager *dpman, GstElement *parent);
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GstDParamManager* gst_dpman_get_manager (GstElement *parent);
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gboolean gst_dpman_add_required_dparam_callback (GstDParamManager *dpman,
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GParamSpec *param_spec,
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gchar *unit_name,
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GstDPMUpdateFunction update_func,
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gpointer update_data);
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gboolean gst_dpman_add_required_dparam_direct (GstDParamManager *dpman,
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GParamSpec *param_spec,
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gchar *unit_name,
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gpointer update_data);
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gboolean gst_dpman_add_required_dparam_array (GstDParamManager *dpman,
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GParamSpec *param_spec,
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gchar *unit_name,
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gpointer update_data);
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void gst_dpman_remove_required_dparam (GstDParamManager *dpman, gchar *dparam_name);
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gboolean gst_dpman_attach_dparam (GstDParamManager *dpman, gchar *dparam_name, GstDParam *dparam);
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void gst_dpman_detach_dparam (GstDParamManager *dpman, gchar *dparam_name);
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GstDParam* gst_dpman_get_dparam(GstDParamManager *dpman, gchar *name);
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GType gst_dpman_get_dparam_type (GstDParamManager *dpman, gchar *name);
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GParamSpec** gst_dpman_list_dparam_specs(GstDParamManager *dpman);
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GParamSpec* gst_dpman_get_param_spec (GstDParamManager *dpman, gchar *dparam_name);
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void gst_dpman_dparam_spec_has_changed (GstDParamManager *dpman, gchar *dparam_name);
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void gst_dpman_set_rate_change_pad(GstDParamManager *dpman, GstPad *pad);
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void gst_dpman_bypass_dparam(GstDParamManager *dpman, gchar *dparam_name);
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gboolean gst_dpman_set_mode(GstDParamManager *dpman, gchar *modename);
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void gst_dpman_register_mode (GstDParamManagerClass *klass,
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gchar *modename,
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GstDPMModePreProcessFunction preprocessfunc,
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GstDPMModeProcessFunction processfunc,
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GstDPMModeSetupFunction setupfunc,
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GstDPMModeTeardownFunction teardownfunc);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_DPMAN_H__ */
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