/* GStreamer * * Copyright (C) 2008 Sebastian Dröge . * * 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 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); /** * 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__ */