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6f363cd89b
Original commit message from CVS: * Makefile.am: * configure.ac: * libs/gst/base/gstadapter.c: (gst_adapter_clear), (gst_adapter_push), (gst_adapter_peek_into), (gst_adapter_peek), (gst_adapter_flush), (gst_adapter_take), (gst_adapter_take_buffer): * libs/gst/base/gstadapter.h: * tests/check/libs/adapter.c: (create_and_fill_adapter), (GST_START_TEST), (gst_adapter_suite): * tests/examples/Makefile.am: Do some optimisation work in GstAdapter to avoid copies in more cases. It could still do slightly better by merging buffers when gst_buffer_is_span_fast is true, but is already faster. Also, avoid traversing a single-linked list to append each incoming buffer inside the adapter. Add simple test app that times the adapter behaviour in different situations, and extend the unit test to check that bytes enter and exit the adapter in their original order.
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/* GStreamer
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* Copyright (C) 2004 Benjamin Otte <otte@gnome.org>
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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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#include <gst/gst.h>
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#ifndef __GST_ADAPTER_H__
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#define __GST_ADAPTER_H__
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G_BEGIN_DECLS
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#define GST_TYPE_ADAPTER \
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(gst_adapter_get_type())
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#define GST_ADAPTER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_ADAPTER, GstAdapter))
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#define GST_ADAPTER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_ADAPTER, GstAdapterClass))
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#define GST_ADAPTER_GET_CLASS(obj) \
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(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_ADAPTER, GstAdapterClass))
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#define GST_IS_ADAPTER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_ADAPTER))
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#define GST_IS_ADAPTER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_ADAPTER))
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typedef struct _GstAdapter GstAdapter;
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typedef struct _GstAdapterClass GstAdapterClass;
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/**
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* GstAdapter:
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* @object: the parent object.
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*
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* The opaque #GstAdapter data structure.
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*/
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struct _GstAdapter {
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GObject object;
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/*< private >*/
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GSList * buflist;
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guint size;
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guint skip;
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/* we keep state of assembled pieces */
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guint8 * assembled_data;
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guint assembled_size;
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guint assembled_len;
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/* Remember where the end of our buffer list is to
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* speed up the push */
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GSList *buflist_end;
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gpointer _gst_reserved[GST_PADDING - 1];
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};
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struct _GstAdapterClass {
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GObjectClass parent_class;
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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GstAdapter * gst_adapter_new (void);
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void gst_adapter_clear (GstAdapter *adapter);
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void gst_adapter_push (GstAdapter *adapter, GstBuffer* buf);
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const guint8 * gst_adapter_peek (GstAdapter *adapter, guint size);
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void gst_adapter_flush (GstAdapter *adapter, guint flush);
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guint8* gst_adapter_take (GstAdapter *adapter, guint nbytes);
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GstBuffer* gst_adapter_take_buffer (GstAdapter *adapter, guint nbytes);
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guint gst_adapter_available (GstAdapter *adapter);
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guint gst_adapter_available_fast (GstAdapter *adapter);
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GType gst_adapter_get_type (void);
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G_END_DECLS
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#endif /* __GST_ADAPTER_H__ */
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