subprojects/gst-plugins-bad/sys/mediafoundation/gstmfsourceobject.h

   1 /* GStreamer
   2  * Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
   3  * Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef __GST_MF_SOURCE_OBJECT_H__
  22 #define __GST_MF_SOURCE_OBJECT_H__
  23
  24 #include <gst/gst.h>
  25 #include "gstmfutils.h"
  26
  27 G_BEGIN_DECLS
  28
  29 #define GST_TYPE_MF_SOURCE_OBJECT             (gst_mf_source_object_get_type())
  30 #define GST_MF_SOURCE_OBJECT(obj)             (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_MF_SOURCE_OBJECT, GstMFSourceObject))
  31 #define GST_MF_SOURCE_OBJECT_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_MF_SOURCE_OBJECT, GstMFSourceObjectClass))
  32 #define GST_IS_MF_SOURCE_OBJECT(obj)          (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_MF_SOURCE_OBJECT))
  33 #define GST_IS_MF_SOURCE_OBJECT_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_MF_SOURCE_OBJECT))
  34 #define GST_MF_SOURCE_OBJECT_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS((obj), GST_TYPE_MF_SOURCE_OBJECT, GstMFSourceObjectClass))
  35
  36 typedef struct _GstMFSourceObject        GstMFSourceObject;
  37 typedef struct _GstMFSourceObjectClass   GstMFSourceObjectClass;
  38
  39 typedef enum
  40 {
  41   GST_MF_SOURCE_TYPE_VIDEO,
  42 } GstMFSourceType;
  43
  44 #define GST_TYPE_MF_SOURCE_TYPE (gst_mf_source_type_get_type())
  45 GType gst_mf_source_type_get_type (void);
  46
  47 struct _GstMFSourceObject
  48 {
  49   GstObject parent;
  50
  51   gboolean opened;
  52
  53   GstMFSourceType source_type;
  54   gchar *device_path;
  55   gchar *device_name;
  56   gint device_index;
  57
  58   GWeakRef client;
  59 };
  60
  61 struct _GstMFSourceObjectClass
  62 {
  63   GstObjectClass parent_class;
  64
  65   gboolean      (*start)       (GstMFSourceObject * object);
  66
  67   gboolean      (*stop)        (GstMFSourceObject * object);
  68
  69   GstFlowReturn (*fill)        (GstMFSourceObject * object,
  70                                 GstBuffer * buffer);
  71
  72   GstFlowReturn (*create)      (GstMFSourceObject * object,
  73                                 GstBuffer ** buffer);
  74
  75   gboolean      (*unlock)      (GstMFSourceObject * object);
  76
  77   gboolean      (*unlock_stop) (GstMFSourceObject * object);
  78
  79   GstCaps *     (*get_caps)    (GstMFSourceObject * object);
  80
  81   gboolean      (*set_caps)    (GstMFSourceObject * object,
  82                                 GstCaps * caps);
  83 };
  84
  85 GType           gst_mf_source_object_get_type     (void);
  86
  87 gboolean        gst_mf_source_object_start        (GstMFSourceObject * object);
  88
  89 gboolean        gst_mf_source_object_stop         (GstMFSourceObject * object);
  90
  91 /* Used for raw format */
  92 GstFlowReturn   gst_mf_source_object_fill         (GstMFSourceObject * object,
  93                                                    GstBuffer * buffer);
  94
  95 /* Used for compressed/raw format */
  96 GstFlowReturn   gst_mf_source_object_create       (GstMFSourceObject * object,
  97                                                    GstBuffer ** buffer);
  98
  99 void            gst_mf_source_object_set_flushing (GstMFSourceObject * object,
 100                                                    gboolean flushing);
 101
 102 GstCaps *       gst_mf_source_object_get_caps     (GstMFSourceObject * object);
 103
 104 gboolean        gst_mf_source_object_set_caps     (GstMFSourceObject * object,
 105                                                    GstCaps * caps);
 106
 107 gboolean        gst_mf_source_object_set_client   (GstMFSourceObject * object,
 108                                                    GstElement * element);
 109
 110 GstClockTime    gst_mf_source_object_get_running_time (GstMFSourceObject * object);
 111
 112 /* A factory method for subclass impl. selection */
 113 GstMFSourceObject * gst_mf_source_object_new      (GstMFSourceType type,
 114                                                    gint device_index,
 115                                                    const gchar * device_name,
 116                                                    const gchar * device_path,
 117                                                    gpointer dispatcher);
 118
 119 /* Utility methods */
 120 gint            gst_mf_source_object_caps_compare (GstCaps * caps1,
 121                                                    GstCaps * caps2);
 122
 123 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstMFSourceObject, gst_object_unref)
 124
 125 G_END_DECLS
 126
 127 #endif /* __GST_MF_SOURCE_OBJECT_H__ */