mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-15 12:56:33 +00:00
99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
/* GStreamer
|
|
*
|
|
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>.
|
|
*
|
|
* 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_NAL_READER_H__
|
|
#define __GST_NAL_READER_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef struct _GstNalReader GstNalReader;
|
|
|
|
struct _GstNalReader
|
|
{
|
|
const guint8 *data;
|
|
guint size;
|
|
|
|
guint byte; /* Byte position */
|
|
guint bits_in_cache; /* bitpos in the cache of next bit */
|
|
guint8 first_byte;
|
|
guint64 cache; /* cached bytes */
|
|
};
|
|
|
|
GstNalReader *gst_nal_reader_new (const guint8 *data, guint size);
|
|
GstNalReader *gst_nal_reader_new_from_buffer (const GstBuffer *buffer);
|
|
void gst_nal_reader_free (GstNalReader * reader);
|
|
|
|
void gst_nal_reader_init (GstNalReader * reader, const guint8 * data, guint size);
|
|
void gst_nal_reader_init_from_buffer (GstNalReader * reader, const GstBuffer * buffer);
|
|
|
|
gboolean gst_nal_reader_skip (GstNalReader *reader, guint nbits);
|
|
gboolean gst_nal_reader_skip_to_byte (GstNalReader *reader);
|
|
|
|
guint gst_nal_reader_get_pos (const GstNalReader * reader);
|
|
guint gst_nal_reader_get_remaining (const GstNalReader *reader);
|
|
|
|
gboolean gst_nal_reader_get_bits_uint8 (GstNalReader *reader, guint8 *val, guint nbits);
|
|
gboolean gst_nal_reader_get_bits_uint16 (GstNalReader *reader, guint16 *val, guint nbits);
|
|
gboolean gst_nal_reader_get_bits_uint32 (GstNalReader *reader, guint32 *val, guint nbits);
|
|
gboolean gst_nal_reader_get_bits_uint64 (GstNalReader *reader, guint64 *val, guint nbits);
|
|
|
|
gboolean gst_nal_reader_peek_bits_uint8 (const GstNalReader *reader, guint8 *val, guint nbits);
|
|
gboolean gst_nal_reader_peek_bits_uint16 (const GstNalReader *reader, guint16 *val, guint nbits);
|
|
gboolean gst_nal_reader_peek_bits_uint32 (const GstNalReader *reader, guint32 *val, guint nbits);
|
|
gboolean gst_nal_reader_peek_bits_uint64 (const GstNalReader *reader, guint64 *val, guint nbits);
|
|
|
|
gboolean gst_nal_reader_get_ue (GstNalReader *reader, guint32 *val);
|
|
gboolean gst_nal_reader_peek_ue (const GstNalReader *reader, guint32 *val);
|
|
|
|
gboolean gst_nal_reader_get_se (GstNalReader *reader, gint32 *val);
|
|
gboolean gst_nal_reader_peek_se (const GstNalReader *reader, gint32 *val);
|
|
|
|
/**
|
|
* GST_NAL_READER_INIT:
|
|
* @data: Data from which the #GstNalReader should read
|
|
* @size: Size of @data in bytes
|
|
*
|
|
* A #GstNalReader must be initialized with this macro, before it can be
|
|
* used. This macro can used be to initialize a variable, but it cannot
|
|
* be assigned to a variable. In that case you have to use
|
|
* gst_bit_reader_init().
|
|
*
|
|
* Since: 0.10.22
|
|
*/
|
|
#define GST_NAL_READER_INIT(data, size) {data, size, 0, 0, 0xff, 0xff}
|
|
|
|
/**
|
|
* GST_NAL_READER_INIT_FROM_BUFFER:
|
|
* @buffer: Buffer from which the #GstNalReader should read
|
|
*
|
|
* A #GstNalReader must be initialized with this macro, before it can be
|
|
* used. This macro can used be to initialize a variable, but it cannot
|
|
* be assigned to a variable. In that case you have to use
|
|
* gst_bit_reader_init().
|
|
*
|
|
* Since: 0.10.22
|
|
*/
|
|
#define GST_NAL_READER_INIT_FROM_BUFFER(buffer) {GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), 0, 0, 0xff, 0xff}
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_NAL_READER_H__ */
|