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476 lines
20 KiB
C
476 lines
20 KiB
C
/* GStreamer byte reader
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*
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* Copyright (C) 2008 Sebastian Dröge <sebastian.droege@collabora.co.uk>.
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* Copyright (C) 2009 Tim-Philipp Müller <tim centricular net>
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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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#ifndef __GST_BYTE_READER_H__
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#define __GST_BYTE_READER_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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#define GST_BYTE_READER(reader) ((GstByteReader *) (reader))
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/**
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* GstByteReader:
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* @data: Data from which the bit reader will read
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* @size: Size of @data in bytes
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* @byte: Current byte position
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*
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* A byte reader instance.
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*/
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typedef struct {
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const guint8 *data;
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guint size;
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guint byte; /* Byte position */
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} GstByteReader;
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GstByteReader * gst_byte_reader_new (const guint8 *data, guint size);
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GstByteReader * gst_byte_reader_new_from_buffer (const GstBuffer *buffer);
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void gst_byte_reader_free (GstByteReader *reader);
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void gst_byte_reader_init (GstByteReader *reader, const guint8 *data, guint size);
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void gst_byte_reader_init_from_buffer (GstByteReader *reader, const GstBuffer *buffer);
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gboolean gst_byte_reader_set_pos (GstByteReader *reader, guint pos);
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guint gst_byte_reader_get_pos (const GstByteReader *reader);
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guint gst_byte_reader_get_remaining (const GstByteReader *reader);
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guint gst_byte_reader_get_size (const GstByteReader *reader);
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gboolean gst_byte_reader_skip (GstByteReader *reader, guint nbytes);
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gboolean gst_byte_reader_get_uint8 (GstByteReader *reader, guint8 *val);
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gboolean gst_byte_reader_get_int8 (GstByteReader *reader, gint8 *val);
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gboolean gst_byte_reader_get_uint16_le (GstByteReader *reader, guint16 *val);
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gboolean gst_byte_reader_get_int16_le (GstByteReader *reader, gint16 *val);
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gboolean gst_byte_reader_get_uint16_be (GstByteReader *reader, guint16 *val);
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gboolean gst_byte_reader_get_int16_be (GstByteReader *reader, gint16 *val);
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gboolean gst_byte_reader_get_uint24_le (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_get_int24_le (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_get_uint24_be (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_get_int24_be (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_get_uint32_le (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_get_int32_le (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_get_uint32_be (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_get_int32_be (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_get_uint64_le (GstByteReader *reader, guint64 *val);
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gboolean gst_byte_reader_get_int64_le (GstByteReader *reader, gint64 *val);
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gboolean gst_byte_reader_get_uint64_be (GstByteReader *reader, guint64 *val);
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gboolean gst_byte_reader_get_int64_be (GstByteReader *reader, gint64 *val);
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gboolean gst_byte_reader_peek_uint8 (GstByteReader *reader, guint8 *val);
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gboolean gst_byte_reader_peek_int8 (GstByteReader *reader, gint8 *val);
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gboolean gst_byte_reader_peek_uint16_le (GstByteReader *reader, guint16 *val);
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gboolean gst_byte_reader_peek_int16_le (GstByteReader *reader, gint16 *val);
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gboolean gst_byte_reader_peek_uint16_be (GstByteReader *reader, guint16 *val);
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gboolean gst_byte_reader_peek_int16_be (GstByteReader *reader, gint16 *val);
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gboolean gst_byte_reader_peek_uint24_le (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_peek_int24_le (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_peek_uint24_be (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_peek_int24_be (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_peek_uint32_le (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_peek_int32_le (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_peek_uint32_be (GstByteReader *reader, guint32 *val);
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gboolean gst_byte_reader_peek_int32_be (GstByteReader *reader, gint32 *val);
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gboolean gst_byte_reader_peek_uint64_le (GstByteReader *reader, guint64 *val);
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gboolean gst_byte_reader_peek_int64_le (GstByteReader *reader, gint64 *val);
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gboolean gst_byte_reader_peek_uint64_be (GstByteReader *reader, guint64 *val);
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gboolean gst_byte_reader_peek_int64_be (GstByteReader *reader, gint64 *val);
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gboolean gst_byte_reader_get_float32_le (GstByteReader *reader, gfloat *val);
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gboolean gst_byte_reader_get_float32_be (GstByteReader *reader, gfloat *val);
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gboolean gst_byte_reader_get_float64_le (GstByteReader *reader, gdouble *val);
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gboolean gst_byte_reader_get_float64_be (GstByteReader *reader, gdouble *val);
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gboolean gst_byte_reader_peek_float32_le (GstByteReader *reader, gfloat *val);
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gboolean gst_byte_reader_peek_float32_be (GstByteReader *reader, gfloat *val);
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gboolean gst_byte_reader_peek_float64_le (GstByteReader *reader, gdouble *val);
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gboolean gst_byte_reader_peek_float64_be (GstByteReader *reader, gdouble *val);
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gboolean gst_byte_reader_dup_data (GstByteReader * reader, guint size, guint8 ** val);
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gboolean gst_byte_reader_get_data (GstByteReader * reader, guint size, const guint8 ** val);
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gboolean gst_byte_reader_peek_data (GstByteReader * reader, guint size, const guint8 ** val);
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#define gst_byte_reader_dup_string(reader,str) \
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gst_byte_reader_dup_string_utf8(reader,str)
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gboolean gst_byte_reader_dup_string_utf8 (GstByteReader * reader, gchar ** str);
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gboolean gst_byte_reader_dup_string_utf16 (GstByteReader * reader, guint16 ** str);
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gboolean gst_byte_reader_dup_string_utf32 (GstByteReader * reader, guint32 ** str);
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#define gst_byte_reader_skip_string(reader) \
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gst_byte_reader_skip_string_utf8(reader)
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gboolean gst_byte_reader_skip_string_utf8 (GstByteReader * reader);
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gboolean gst_byte_reader_skip_string_utf16 (GstByteReader * reader);
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gboolean gst_byte_reader_skip_string_utf32 (GstByteReader * reader);
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#define gst_byte_reader_get_string(reader,str) \
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gst_byte_reader_get_string_utf8(reader,str)
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#define gst_byte_reader_peek_string(reader,str) \
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gst_byte_reader_peek_string_utf8(reader,str)
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gboolean gst_byte_reader_get_string_utf8 (GstByteReader * reader, const gchar ** str);
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gboolean gst_byte_reader_peek_string_utf8 (GstByteReader * reader, const gchar ** str);
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guint gst_byte_reader_masked_scan_uint32 (GstByteReader * reader,
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guint32 mask,
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guint32 pattern,
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guint offset,
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guint size);
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/**
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* GST_BYTE_READER_INIT:
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* @data: Data from which the #GstByteReader should read
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* @size: Size of @data in bytes
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*
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* A #GstByteReader must be initialized with this macro, before it can be
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* used. This macro can used be to initialize a variable, but it cannot
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* be assigned to a variable. In that case you have to use
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* gst_byte_reader_init().
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*
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* Since: 0.10.22
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*/
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#define GST_BYTE_READER_INIT(data, size) {data, size, 0}
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/**
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* GST_BYTE_READER_INIT_FROM_BUFFER:
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* @buffer: Buffer from which the #GstByteReader should read
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*
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* A #GstByteReader must be initialized with this macro, before it can be
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* used. This macro can used be to initialize a variable, but it cannot
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* be assigned to a variable. In that case you have to use
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* gst_byte_reader_init().
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*
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* Since: 0.10.22
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*/
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#define GST_BYTE_READER_INIT_FROM_BUFFER(buffer) {GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), 0}
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/* unchecked variants */
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static inline void
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gst_byte_reader_skip_unchecked (GstByteReader * reader, guint nbytes)
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{
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reader->byte += nbytes;
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}
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#define __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(bits,type,lower,upper,adj) \
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\
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static inline type \
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gst_byte_reader_peek_##lower##_unchecked (GstByteReader * reader) \
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{ \
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type val = (type) GST_READ_##upper (reader->data + reader->byte); \
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adj \
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return val; \
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} \
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\
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static inline type \
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gst_byte_reader_get_##lower##_unchecked (GstByteReader * reader) \
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{ \
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type val = gst_byte_reader_peek_##lower##_unchecked (reader); \
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reader->byte += bits / 8; \
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return val; \
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}
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,guint8,uint8,UINT8,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,gint8,int8,UINT8,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_le,UINT16_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_be,UINT16_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_le,UINT16_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_be,UINT16_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_le,UINT32_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_be,UINT32_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_le,UINT32_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_be,UINT32_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_le,UINT24_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_be,UINT24_BE,/* */)
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/* fix up the sign for 24-bit signed ints stored in 32-bit signed ints */
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_le,UINT24_LE,
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if (val & 0x00800000) val |= 0xff000000;)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_be,UINT24_BE,
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if (val & 0x00800000) val |= 0xff000000;)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_le,UINT64_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_be,UINT64_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_le,UINT64_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_be,UINT64_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_le,FLOAT_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_be,FLOAT_BE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_le,DOUBLE_LE,/* */)
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__GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_be,DOUBLE_BE,/* */)
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#undef __GET_PEEK_BITS_UNCHECKED
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static inline const guint8 *
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gst_byte_reader_peek_data_unchecked (GstByteReader * reader)
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{
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return (const guint8 *) (reader->data + reader->byte);
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}
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static inline const guint8 *
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gst_byte_reader_get_data_unchecked (GstByteReader * reader, guint size)
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{
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const guint8 *data;
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data = gst_byte_reader_peek_data_unchecked (reader);
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gst_byte_reader_skip_unchecked (reader, size);
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return data;
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}
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static inline guint8 *
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gst_byte_reader_dup_data_unchecked (GstByteReader * reader, guint size)
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{
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return g_memdup (gst_byte_reader_get_data_unchecked (reader, size), size);
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}
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/* inlined variants (do not use directly) */
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static inline guint
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_gst_byte_reader_get_remaining_inline (const GstByteReader * reader)
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{
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return reader->size - reader->byte;
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}
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static inline guint
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_gst_byte_reader_get_size_inline (const GstByteReader * reader)
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{
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return reader->size;
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}
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#define __GST_BYTE_READER_GET_PEEK_BITS_INLINE(bits,type,name) \
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\
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static inline gboolean \
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_gst_byte_reader_peek_##name##_inline (GstByteReader * reader, type * val) \
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{ \
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if (_gst_byte_reader_get_remaining_inline (reader) < (bits / 8)) \
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return FALSE; \
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\
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*val = gst_byte_reader_peek_##name##_unchecked (reader); \
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return TRUE; \
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} \
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\
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static inline gboolean \
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_gst_byte_reader_get_##name##_inline (GstByteReader * reader, type * val) \
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{ \
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if (_gst_byte_reader_get_remaining_inline (reader) < (bits / 8)) \
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return FALSE; \
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\
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*val = gst_byte_reader_get_##name##_unchecked (reader); \
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return TRUE; \
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}
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,guint8,uint8)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,gint8,int8)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_be)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_le)
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__GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_be)
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#undef __GST_BYTE_READER_GET_PEEK_BITS_INLINE
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#ifndef GST_BYTE_READER_DISABLE_INLINES
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#define gst_byte_reader_get_remaining(reader) \
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_gst_byte_reader_get_remaining_inline(reader)
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#define gst_byte_reader_get_size(reader) \
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_gst_byte_reader_get_size_inline(reader)
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/* we use defines here so we can add the G_LIKELY() */
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#define gst_byte_reader_get_uint8(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint8_inline(reader,val))
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#define gst_byte_reader_get_int8(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int8_inline(reader,val))
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#define gst_byte_reader_get_uint16_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint16_le_inline(reader,val))
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#define gst_byte_reader_get_int16_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int16_le_inline(reader,val))
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#define gst_byte_reader_get_uint16_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint16_be_inline(reader,val))
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#define gst_byte_reader_get_int16_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int16_be_inline(reader,val))
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#define gst_byte_reader_get_uint24_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint24_le_inline(reader,val))
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#define gst_byte_reader_get_int24_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int24_le_inline(reader,val))
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#define gst_byte_reader_get_uint24_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint24_be_inline(reader,val))
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#define gst_byte_reader_get_int24_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int24_be_inline(reader,val))
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#define gst_byte_reader_get_uint32_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint32_le_inline(reader,val))
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#define gst_byte_reader_get_int32_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int32_le_inline(reader,val))
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#define gst_byte_reader_get_uint32_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint32_be_inline(reader,val))
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#define gst_byte_reader_get_int32_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int32_be_inline(reader,val))
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#define gst_byte_reader_get_uint64_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint64_le_inline(reader,val))
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#define gst_byte_reader_get_int64_le(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int64_le_inline(reader,val))
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#define gst_byte_reader_get_uint64_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_uint64_be_inline(reader,val))
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#define gst_byte_reader_get_int64_be(reader,val) \
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G_LIKELY(_gst_byte_reader_get_int64_be_inline(reader,val))
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|
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#define gst_byte_reader_peek_uint8(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint8_inline(reader,val))
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#define gst_byte_reader_peek_int8(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int8_inline(reader,val))
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#define gst_byte_reader_peek_uint16_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint16_le_inline(reader,val))
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#define gst_byte_reader_peek_int16_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int16_le_inline(reader,val))
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#define gst_byte_reader_peek_uint16_be(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint16_be_inline(reader,val))
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#define gst_byte_reader_peek_int16_be(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int16_be_inline(reader,val))
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#define gst_byte_reader_peek_uint24_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint24_le_inline(reader,val))
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#define gst_byte_reader_peek_int24_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int24_le_inline(reader,val))
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#define gst_byte_reader_peek_uint24_be(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint24_be_inline(reader,val))
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#define gst_byte_reader_peek_int24_be(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int24_be_inline(reader,val))
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#define gst_byte_reader_peek_uint32_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint32_le_inline(reader,val))
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#define gst_byte_reader_peek_int32_le(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_int32_le_inline(reader,val))
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|
#define gst_byte_reader_peek_uint32_be(reader,val) \
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G_LIKELY(_gst_byte_reader_peek_uint32_be_inline(reader,val))
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|
#define gst_byte_reader_peek_int32_be(reader,val) \
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|
G_LIKELY(_gst_byte_reader_peek_int32_be_inline(reader,val))
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|
#define gst_byte_reader_peek_uint64_le(reader,val) \
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|
G_LIKELY(_gst_byte_reader_peek_uint64_le_inline(reader,val))
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|
#define gst_byte_reader_peek_int64_le(reader,val) \
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|
G_LIKELY(_gst_byte_reader_peek_int64_le_inline(reader,val))
|
|
#define gst_byte_reader_peek_uint64_be(reader,val) \
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|
G_LIKELY(_gst_byte_reader_peek_uint64_be_inline(reader,val))
|
|
#define gst_byte_reader_peek_int64_be(reader,val) \
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|
G_LIKELY(_gst_byte_reader_peek_int64_be_inline(reader,val))
|
|
|
|
#define gst_byte_reader_get_float32_le(reader,val) \
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|
G_LIKELY(_gst_byte_reader_get_float32_le_inline(reader,val))
|
|
#define gst_byte_reader_get_float32_be(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_get_float32_be_inline(reader,val))
|
|
#define gst_byte_reader_get_float64_le(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_get_float64_le_inline(reader,val))
|
|
#define gst_byte_reader_get_float64_be(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_get_float64_be_inline(reader,val))
|
|
#define gst_byte_reader_peek_float32_le(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_peek_float32_le_inline(reader,val))
|
|
#define gst_byte_reader_peek_float32_be(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_peek_float32_be_inline(reader,val))
|
|
#define gst_byte_reader_peek_float64_le(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_peek_float64_le_inline(reader,val))
|
|
#define gst_byte_reader_peek_float64_be(reader,val) \
|
|
G_LIKELY(_gst_byte_reader_peek_float64_be_inline(reader,val))
|
|
|
|
#endif /* GST_BYTE_READER_DISABLE_INLINES */
|
|
|
|
static inline gboolean
|
|
_gst_byte_reader_dup_data_inline (GstByteReader * reader, guint size, guint8 ** val)
|
|
{
|
|
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_inline (reader) < size))
|
|
return FALSE;
|
|
|
|
*val = gst_byte_reader_dup_data_unchecked (reader, size);
|
|
return TRUE;
|
|
}
|
|
|
|
static inline gboolean
|
|
_gst_byte_reader_get_data_inline (GstByteReader * reader, guint size, const guint8 ** val)
|
|
{
|
|
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_inline (reader) < size))
|
|
return FALSE;
|
|
|
|
*val = gst_byte_reader_get_data_unchecked (reader, size);
|
|
return TRUE;
|
|
}
|
|
|
|
static inline gboolean
|
|
_gst_byte_reader_peek_data_inline (GstByteReader * reader, guint size, const guint8 ** val)
|
|
{
|
|
if (G_UNLIKELY (size > reader->size || _gst_byte_reader_get_remaining_inline (reader) < size))
|
|
return FALSE;
|
|
|
|
*val = gst_byte_reader_peek_data_unchecked (reader);
|
|
return TRUE;
|
|
}
|
|
|
|
static inline gboolean
|
|
_gst_byte_reader_skip_inline (GstByteReader * reader, guint nbytes)
|
|
{
|
|
if (G_UNLIKELY (_gst_byte_reader_get_remaining_inline (reader) < nbytes))
|
|
return FALSE;
|
|
|
|
reader->byte += nbytes;
|
|
return TRUE;
|
|
}
|
|
|
|
#ifndef GST_BYTE_READER_DISABLE_INLINES
|
|
|
|
#define gst_byte_reader_dup_data(reader,size,val) \
|
|
G_LIKELY(_gst_byte_reader_dup_data_inline(reader,size,val))
|
|
#define gst_byte_reader_get_data(reader,size,val) \
|
|
G_LIKELY(_gst_byte_reader_get_data_inline(reader,size,val))
|
|
#define gst_byte_reader_peek_data(reader,size,val) \
|
|
G_LIKELY(_gst_byte_reader_peek_data_inline(reader,size,val))
|
|
#define gst_byte_reader_skip(reader,nbytes) \
|
|
G_LIKELY(_gst_byte_reader_skip_inline(reader,nbytes))
|
|
|
|
#endif /* GST_BYTE_READER_DISABLE_INLINES */
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_BYTE_READER_H__ */
|