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/* GStreamer
*
* Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
*
* 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_BYTE_READER_H__
#define __GST_BYTE_READER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/**
* GstByteReader:
* @data: Data from which the bit reader will read
* @size: Size of @data in bytes
* @byte: Current byte position
*
* A byte reader instance.
*/
typedef struct {
const guint8 *data;
guint size;
guint byte; /* Byte position */
} GstByteReader;
GstByteReader * gst_byte_reader_new (const guint8 *data, guint size);
GstByteReader * gst_byte_reader_new_from_buffer (const GstBuffer *buffer);
void gst_byte_reader_free (GstByteReader *reader);
void gst_byte_reader_init (GstByteReader *reader, const guint8 *data, guint size);
void gst_byte_reader_init_from_buffer (GstByteReader *reader, const GstBuffer *buffer);
gboolean gst_byte_reader_set_pos (GstByteReader *reader, guint pos);
guint gst_byte_reader_get_pos (const GstByteReader *reader);
guint gst_byte_reader_get_remaining (const GstByteReader *reader);
gboolean gst_byte_reader_skip (GstByteReader *reader, guint nbytes);
gboolean gst_byte_reader_get_uint8 (GstByteReader *reader, guint8 *val);
gboolean gst_byte_reader_get_int8 (GstByteReader *reader, gint8 *val);
gboolean gst_byte_reader_get_uint16_le (GstByteReader *reader, guint16 *val);
gboolean gst_byte_reader_get_int16_le (GstByteReader *reader, gint16 *val);
gboolean gst_byte_reader_get_uint16_be (GstByteReader *reader, guint16 *val);
gboolean gst_byte_reader_get_int16_be (GstByteReader *reader, gint16 *val);
gboolean gst_byte_reader_get_uint24_le (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_get_int24_le (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_get_uint24_be (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_get_int24_be (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_get_uint32_le (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_get_int32_le (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_get_uint32_be (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_get_int32_be (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_get_uint64_le (GstByteReader *reader, guint64 *val);
gboolean gst_byte_reader_get_int64_le (GstByteReader *reader, gint64 *val);
gboolean gst_byte_reader_get_uint64_be (GstByteReader *reader, guint64 *val);
gboolean gst_byte_reader_get_int64_be (GstByteReader *reader, gint64 *val);
gboolean gst_byte_reader_peek_uint8 (GstByteReader *reader, guint8 *val);
gboolean gst_byte_reader_peek_int8 (GstByteReader *reader, gint8 *val);
gboolean gst_byte_reader_peek_uint16_le (GstByteReader *reader, guint16 *val);
gboolean gst_byte_reader_peek_int16_le (GstByteReader *reader, gint16 *val);
gboolean gst_byte_reader_peek_uint16_be (GstByteReader *reader, guint16 *val);
gboolean gst_byte_reader_peek_int16_be (GstByteReader *reader, gint16 *val);
gboolean gst_byte_reader_peek_uint24_le (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_peek_int24_le (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_peek_uint24_be (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_peek_int24_be (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_peek_uint32_le (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_peek_int32_le (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_peek_uint32_be (GstByteReader *reader, guint32 *val);
gboolean gst_byte_reader_peek_int32_be (GstByteReader *reader, gint32 *val);
gboolean gst_byte_reader_peek_uint64_le (GstByteReader *reader, guint64 *val);
gboolean gst_byte_reader_peek_int64_le (GstByteReader *reader, gint64 *val);
gboolean gst_byte_reader_peek_uint64_be (GstByteReader *reader, guint64 *val);
gboolean gst_byte_reader_peek_int64_be (GstByteReader *reader, gint64 *val);
gboolean gst_byte_reader_get_float32_le (GstByteReader *reader, gfloat *val);
gboolean gst_byte_reader_get_float32_be (GstByteReader *reader, gfloat *val);
gboolean gst_byte_reader_get_float64_le (GstByteReader *reader, gdouble *val);
gboolean gst_byte_reader_get_float64_be (GstByteReader *reader, gdouble *val);
gboolean gst_byte_reader_peek_float32_le (GstByteReader *reader, gfloat *val);
gboolean gst_byte_reader_peek_float32_be (GstByteReader *reader, gfloat *val);
gboolean gst_byte_reader_peek_float64_le (GstByteReader *reader, gdouble *val);
gboolean gst_byte_reader_peek_float64_be (GstByteReader *reader, gdouble *val);
gboolean gst_byte_reader_dup_data (GstByteReader * reader, guint size, guint8 ** val);
gboolean gst_byte_reader_get_data (GstByteReader * reader, guint size, const guint8 ** val);
gboolean gst_byte_reader_peek_data (GstByteReader * reader, guint size, const guint8 ** val);
#define gst_byte_reader_dup_string(reader,str) \
gst_byte_reader_dup_string_utf8(reader,str)
gboolean gst_byte_reader_dup_string_utf8 (GstByteReader * reader, gchar ** str);
gboolean gst_byte_reader_dup_string_utf16 (GstByteReader * reader, guint16 ** str);
gboolean gst_byte_reader_dup_string_utf32 (GstByteReader * reader, guint32 ** str);
#define gst_byte_reader_skip_string(reader) \
gst_byte_reader_skip_string_utf8(reader)
gboolean gst_byte_reader_skip_string_utf8 (GstByteReader * reader);
gboolean gst_byte_reader_skip_string_utf16 (GstByteReader * reader);
gboolean gst_byte_reader_skip_string_utf32 (GstByteReader * reader);
#define gst_byte_reader_get_string(reader,str) \
gst_byte_reader_get_string_utf8(reader,str)
#define gst_byte_reader_peek_string(reader,str) \
gst_byte_reader_peek_string_utf8(reader,str)
gboolean gst_byte_reader_get_string_utf8 (GstByteReader * reader, const gchar ** str);
gboolean gst_byte_reader_peek_string_utf8 (GstByteReader * reader, const gchar ** str);
guint gst_byte_reader_masked_scan_uint32 (GstByteReader * reader,
guint32 mask,
guint32 pattern,
guint offset,
guint size);
/**
* GST_BYTE_READER_INIT:
* @data: Data from which the #GstByteReader should read
* @size: Size of @data in bytes
*
* A #GstByteReader 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_byte_reader_init().
*
* Since: 0.10.22
*/
#define GST_BYTE_READER_INIT(data, size) {data, size, 0}
/**
* GST_BYTE_READER_INIT_FROM_BUFFER:
* @buffer: Buffer from which the #GstByteReader should read
*
* A #GstByteReader 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_byte_reader_init().
*
* Since: 0.10.22
*/
#define GST_BYTE_READER_INIT_FROM_BUFFER(buffer) {GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), 0}
G_END_DECLS
#endif /* __GST_BYTE_READER_H__ */
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