libs/gst/base/gstadapter.h

   1 /* GStreamer
   2  * Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include <gst/gst.h>
  21
  22 #ifndef __GST_ADAPTER_H__
  23 #define __GST_ADAPTER_H__
  24
  25 G_BEGIN_DECLS
  26
  27
  28 #define GST_TYPE_ADAPTER \
  29   (gst_adapter_get_type())
  30 #define GST_ADAPTER(obj) \
  31   (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_ADAPTER, GstAdapter))
  32 #define GST_ADAPTER_CLASS(klass) \
  33   (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_ADAPTER, GstAdapterClass))
  34 #define GST_ADAPTER_GET_CLASS(obj) \
  35   (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_ADAPTER, GstAdapterClass))
  36 #define GST_IS_ADAPTER(obj) \
  37   (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_ADAPTER))
  38 #define GST_IS_ADAPTER_CLASS(klass) \
  39   (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_ADAPTER))
  40
  41 /**
  42  * GstAdapter:
  43  *
  44  * The opaque #GstAdapter data structure.
  45  */
  46 typedef struct _GstAdapter GstAdapter;
  47 typedef struct _GstAdapterClass GstAdapterClass;
  48
  49 GType                   gst_adapter_get_type            (void);
  50
  51 GstAdapter *            gst_adapter_new                 (void) G_GNUC_MALLOC;
  52
  53 void                    gst_adapter_clear               (GstAdapter *adapter);
  54 void                    gst_adapter_push                (GstAdapter *adapter, GstBuffer* buf);
  55 gconstpointer           gst_adapter_map                 (GstAdapter *adapter, gsize size);
  56 void                    gst_adapter_unmap               (GstAdapter *adapter);
  57 void                    gst_adapter_copy                (GstAdapter *adapter, gpointer dest,
  58                                                          gsize offset, gsize size);
  59 GBytes *                gst_adapter_copy_bytes          (GstAdapter *adapter,
  60                                                          gsize offset, gsize size);
  61 void                    gst_adapter_flush               (GstAdapter *adapter, gsize flush);
  62 gpointer                gst_adapter_take                (GstAdapter *adapter, gsize nbytes);
  63 GstBuffer*              gst_adapter_take_buffer         (GstAdapter *adapter, gsize nbytes);
  64 GList*                  gst_adapter_take_list           (GstAdapter *adapter, gsize nbytes);
  65 GstBuffer *             gst_adapter_take_buffer_fast    (GstAdapter *adapter, gsize nbytes);
  66 GstBufferList *         gst_adapter_take_buffer_list    (GstAdapter *adapter, gsize nbytes);
  67 GstBuffer*              gst_adapter_get_buffer          (GstAdapter *adapter, gsize nbytes);
  68 GList*                  gst_adapter_get_list            (GstAdapter *adapter, gsize nbytes);
  69 GstBuffer *             gst_adapter_get_buffer_fast     (GstAdapter *adapter, gsize nbytes);
  70 GstBufferList *         gst_adapter_get_buffer_list     (GstAdapter *adapter, gsize nbytes);
  71 gsize                   gst_adapter_available           (GstAdapter *adapter);
  72 gsize                   gst_adapter_available_fast      (GstAdapter *adapter);
  73
  74 GstClockTime            gst_adapter_prev_pts            (GstAdapter *adapter, guint64 *distance);
  75 GstClockTime            gst_adapter_prev_dts            (GstAdapter *adapter, guint64 *distance);
  76 GstClockTime            gst_adapter_prev_pts_at_offset  (GstAdapter * adapter, gsize offset, guint64 * distance);
  77 GstClockTime            gst_adapter_prev_dts_at_offset  (GstAdapter * adapter, gsize offset, guint64 * distance);
  78 guint64                 gst_adapter_prev_offset         (GstAdapter *adapter, guint64 *distance);
  79
  80 GstClockTime            gst_adapter_pts_at_discont      (GstAdapter *adapter);
  81 GstClockTime            gst_adapter_dts_at_discont      (GstAdapter *adapter);
  82 guint64                 gst_adapter_offset_at_discont   (GstAdapter *adapter);
  83
  84 guint64                 gst_adapter_distance_from_discont (GstAdapter *adapter);
  85
  86 gssize                  gst_adapter_masked_scan_uint32  (GstAdapter * adapter, guint32 mask,
  87                                                          guint32 pattern, gsize offset, gsize size);
  88
  89 gssize                  gst_adapter_masked_scan_uint32_peek  (GstAdapter * adapter, guint32 mask,
  90                                                          guint32 pattern, gsize offset, gsize size, guint32 * value);
  91
  92 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC
  93 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstAdapter, gst_object_unref)
  94 #endif
  95
  96 G_END_DECLS
  97
  98 #endif /* __GST_ADAPTER_H__ */