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Diffstat (limited to 'libs/control/gstdparammanager.h')
| -rw-r--r-- | libs/control/gstdparammanager.h | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/libs/control/gstdparammanager.h b/libs/control/gstdparammanager.h new file mode 100644 index 0000000000..e8799e6313 --- /dev/null +++ b/libs/control/gstdparammanager.h @@ -0,0 +1,163 @@ +/* GStreamer + * Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk> + * + * gstdparammanager.h: Dynamic Parameter group functionality + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __GST_DPMAN_H__ +#define __GST_DPMAN_H__ + +#include <gst/gstobject.h> +#include <gst/gstprops.h> +#include <libs/control/gstdparam.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#define GST_TYPE_DPMAN (gst_dpman_get_type ()) +#define GST_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_DPMAN,GstDParamManager)) +#define GST_DPMAN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_DPMAN,GstDParamManager)) +#define GST_IS_DPMAN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_DPMAN)) +#define GST_IS_DPMAN_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_DPMAN)) + +#define GST_DPMAN_NAME(dpman) (GST_OBJECT_NAME(dpman)) +#define GST_DPMAN_PARENT(dpman) (GST_OBJECT_PARENT(dpman)) +#define GST_DPMAN_DPARAMS(dpman) ((dpman)->dparams) +#define GST_DPMAN_DPARAMS_LIST(dpman) ((dpman)->dparams_list) + +#define GST_DPMAN_MODE_NAME(dpman) ((dpman)->mode_name) +#define GST_DPMAN_MODE(dpman) ((dpman)->mode) +#define GST_DPMAN_MODE_DATA(dpman) ((dpman)->mode_data) +#define GST_DPMAN_RATE(dpman) ((dpman)->rate) + +typedef enum { + GST_DPMAN_CALLBACK, + GST_DPMAN_DIRECT, + GST_DPMAN_ARRAY, +} GstDPMUpdateMethod; + +typedef struct _GstDParamManager GstDParamManager; +typedef struct _GstDParamManagerClass GstDParamManagerClass; +typedef struct _GstDPMMode GstDPMMode; +typedef struct _GstDParamWrapper GstDParamWrapper; + +typedef guint (*GstDPMModePreProcessFunction) (GstDParamManager *dpman, guint frames, gint64 timestamp); +typedef guint (*GstDPMModeProcessFunction) (GstDParamManager *dpman, guint frame_count); +typedef void (*GstDPMModeSetupFunction) (GstDParamManager *dpman); +typedef void (*GstDPMModeTeardownFunction) (GstDParamManager *dpman); + +typedef void (*GstDPMUpdateFunction) (GValue *value, gpointer data); + +struct _GstDParamManager { + GstObject object; + + GHashTable *dparams; + GSList *dparams_list; + + gchar *mode_name; + GstDPMMode* mode; + gpointer mode_data; + + gint64 timestamp; + guint rate; +}; + +struct _GstDParamManagerClass { + GstObjectClass parent_class; + + GHashTable *modes; + /* signal callbacks */ +}; + +struct _GstDPMMode { + GstDPMModePreProcessFunction preprocessfunc; + GstDPMModeProcessFunction processfunc; + GstDPMModeSetupFunction setupfunc; + GstDPMModeTeardownFunction teardownfunc; +}; + +struct _GstDParamWrapper { + GstDParamSpec* spec; + GValue *value; + GstDParam *dparam; + GstDPMUpdateMethod update_method; + gpointer update_data; + GstDPMUpdateFunction update_func; +}; + +#define GST_DPMAN_PREPROCESSFUNC(dpman) (((dpman)->mode)->preprocessfunc) +#define GST_DPMAN_PROCESSFUNC(dpman) (((dpman)->mode)->processfunc) +#define GST_DPMAN_SETUPFUNC(dpman) (((dpman)->mode)->setupfunc) +#define GST_DPMAN_TEARDOWNFUNC(dpman) (((dpman)->mode)->teardownfunc) + +#define GST_DPMAN_PREPROCESS(dpman, buffer_size, timestamp) \ + (GST_DPMAN_PREPROCESSFUNC(dpman)(dpman, buffer_size, timestamp)) + +#define GST_DPMAN_PROCESS(dpman, frame_count) \ + (GST_DPMAN_PROCESSFUNC(dpman)(dpman, frame_count)) + +#define GST_DPMAN_PROCESS_COUNTDOWN(dpman, frame_countdown, frame_count) \ + (frame_countdown-- || \ + (frame_countdown = GST_DPMAN_PROCESS(dpman, frame_count))) + +#define GST_DPMAN_DO_UPDATE(dpwrap) ((dpwrap->update_func)(dpwrap->value, dpwrap->update_data)) + +GType gst_dpman_get_type (void); +GstDParamManager* gst_dpman_new (gchar *name, GstElement *parent); +void gst_dpman_set_parent (GstDParamManager *dpman, GstElement *parent); +GstDParamManager* gst_dpman_get_manager (GstElement *parent); + +gboolean gst_dpman_add_required_dparam_callback (GstDParamManager *dpman, + gchar *dparam_name, + GType type, + GstDPMUpdateFunction update_func, + gpointer update_data); +gboolean gst_dpman_add_required_dparam_direct (GstDParamManager *dpman, + gchar *dparam_name, + GType type, + gpointer update_data); +gboolean gst_dpman_add_required_dparam_array (GstDParamManager *dpman, + gchar *dparam_name, + GType type, + gpointer update_data); +void gst_dpman_remove_required_dparam (GstDParamManager *dpman, gchar *dparam_name); +gboolean gst_dpman_attach_dparam (GstDParamManager *dpman, gchar *dparam_name, GstDParam *dparam); +void gst_dpman_dettach_dparam (GstDParamManager *dpman, gchar *dparam_name); +GstDParam* gst_dpman_get_dparam(GstDParamManager *dpman, gchar *name); +GType gst_dpman_get_dparam_type (GstDParamManager *dpman, gchar *name); + +GstDParamSpec** gst_dpman_list_dparam_specs(GstDParamManager *dpman); +GstDParamSpec* gst_dpman_get_dparam_spec (GstDParamManager *dpman, gchar *dparam_name); +void gst_dpman_dparam_spec_has_changed (GstDParamManager *dpman, gchar *dparam_name); + +void gst_dpman_set_rate_change_pad(GstDParamManager *dpman, GstPad *pad); + +gboolean gst_dpman_set_mode(GstDParamManager *dpman, gchar *modename); +void gst_dpman_register_mode (GstDParamManagerClass *klass, + gchar *modename, + GstDPMModePreProcessFunction preprocessfunc, + GstDPMModeProcessFunction processfunc, + GstDPMModeSetupFunction setupfunc, + GstDPMModeTeardownFunction teardownfunc); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* __GST_DPMAN_H__ */ |