/* GStreamer byte reader * * Copyright (C) 2008 Sebastian Dröge . * Copyright (C) 2009 Tim-Philipp Müller * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #ifndef __GST_BYTE_READER_H__ #define __GST_BYTE_READER_H__ #include G_BEGIN_DECLS #define GST_BYTE_READER(reader) ((GstByteReader *) (reader)) /** * GstByteReader: * @data: (array length=size): 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 */ /* < private > */ gpointer _gst_reserved[GST_PADDING]; } GstByteReader; GstByteReader * gst_byte_reader_new (const guint8 *data, guint size) G_GNUC_MALLOC; void gst_byte_reader_free (GstByteReader *reader); void gst_byte_reader_init (GstByteReader *reader, const guint8 *data, guint size); 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); guint gst_byte_reader_get_size (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 (const GstByteReader *reader, guint8 *val); gboolean gst_byte_reader_peek_int8 (const GstByteReader *reader, gint8 *val); gboolean gst_byte_reader_peek_uint16_le (const GstByteReader *reader, guint16 *val); gboolean gst_byte_reader_peek_int16_le (const GstByteReader *reader, gint16 *val); gboolean gst_byte_reader_peek_uint16_be (const GstByteReader *reader, guint16 *val); gboolean gst_byte_reader_peek_int16_be (const GstByteReader *reader, gint16 *val); gboolean gst_byte_reader_peek_uint24_le (const GstByteReader *reader, guint32 *val); gboolean gst_byte_reader_peek_int24_le (const GstByteReader *reader, gint32 *val); gboolean gst_byte_reader_peek_uint24_be (const GstByteReader *reader, guint32 *val); gboolean gst_byte_reader_peek_int24_be (const GstByteReader *reader, gint32 *val); gboolean gst_byte_reader_peek_uint32_le (const GstByteReader *reader, guint32 *val); gboolean gst_byte_reader_peek_int32_le (const GstByteReader *reader, gint32 *val); gboolean gst_byte_reader_peek_uint32_be (const GstByteReader *reader, guint32 *val); gboolean gst_byte_reader_peek_int32_be (const GstByteReader *reader, gint32 *val); gboolean gst_byte_reader_peek_uint64_le (const GstByteReader *reader, guint64 *val); gboolean gst_byte_reader_peek_int64_le (const GstByteReader *reader, gint64 *val); gboolean gst_byte_reader_peek_uint64_be (const GstByteReader *reader, guint64 *val); gboolean gst_byte_reader_peek_int64_be (const 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 (const GstByteReader *reader, gfloat *val); gboolean gst_byte_reader_peek_float32_be (const GstByteReader *reader, gfloat *val); gboolean gst_byte_reader_peek_float64_le (const GstByteReader *reader, gdouble *val); gboolean gst_byte_reader_peek_float64_be (const 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 (const 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 (const GstByteReader * reader, const gchar ** str); guint gst_byte_reader_masked_scan_uint32 (const 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(). */ #define GST_BYTE_READER_INIT(data, size) {data, size, 0} /* unchecked variants */ static inline void gst_byte_reader_skip_unchecked (GstByteReader * reader, guint nbytes) { reader->byte += nbytes; } #define __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(bits,type,lower,upper,adj) \ \ static inline type \ gst_byte_reader_peek_##lower##_unchecked (const GstByteReader * reader) \ { \ type val = (type) GST_READ_##upper (reader->data + reader->byte); \ adj \ return val; \ } \ \ static inline type \ gst_byte_reader_get_##lower##_unchecked (GstByteReader * reader) \ { \ type val = gst_byte_reader_peek_##lower##_unchecked (reader); \ reader->byte += bits / 8; \ return val; \ } __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,guint8,uint8,UINT8,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(8,gint8,int8,UINT8,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_le,UINT16_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,guint16,uint16_be,UINT16_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_le,UINT16_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(16,gint16,int16_be,UINT16_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_le,UINT32_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,guint32,uint32_be,UINT32_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_le,UINT32_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gint32,int32_be,UINT32_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_le,UINT24_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,guint32,uint24_be,UINT24_BE,/* */) /* fix up the sign for 24-bit signed ints stored in 32-bit signed ints */ __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_le,UINT24_LE, if (val & 0x00800000) val |= 0xff000000;) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(24,gint32,int24_be,UINT24_BE, if (val & 0x00800000) val |= 0xff000000;) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_le,UINT64_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,guint64,uint64_be,UINT64_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_le,UINT64_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gint64,int64_be,UINT64_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_le,FLOAT_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(32,gfloat,float32_be,FLOAT_BE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_le,DOUBLE_LE,/* */) __GST_BYTE_READER_GET_PEEK_BITS_UNCHECKED(64,gdouble,float64_be,DOUBLE_BE,/* */) #undef __GET_PEEK_BITS_UNCHECKED static inline const guint8 * gst_byte_reader_peek_data_unchecked (const GstByteReader * reader) { return (const guint8 *) (reader->data + reader->byte); } static inline const guint8 * gst_byte_reader_get_data_unchecked (GstByteReader * reader, guint size) { const guint8 *data; data = gst_byte_reader_peek_data_unchecked (reader); gst_byte_reader_skip_unchecked (reader, size); return data; } static inline guint8 * gst_byte_reader_dup_data_unchecked (GstByteReader * reader, guint size) { gconstpointer data = gst_byte_reader_get_data_unchecked (reader, size); return (guint8 *) g_memdup (data, size); } /* Unchecked variants that should not be used */ static inline guint _gst_byte_reader_get_pos_unchecked (const GstByteReader * reader) { return reader->byte; } static inline guint _gst_byte_reader_get_remaining_unchecked (const GstByteReader * reader) { return reader->size - reader->byte; } static inline guint _gst_byte_reader_get_size_unchecked (const GstByteReader * reader) { return reader->size; } /* inlined variants (do not use directly) */ static inline guint _gst_byte_reader_get_remaining_inline (const GstByteReader * reader) { g_return_val_if_fail (reader != NULL, 0); return _gst_byte_reader_get_remaining_unchecked (reader); } static inline guint _gst_byte_reader_get_size_inline (const GstByteReader * reader) { g_return_val_if_fail (reader != NULL, 0); return _gst_byte_reader_get_size_unchecked (reader); } #define __GST_BYTE_READER_GET_PEEK_BITS_INLINE(bits,type,name) \ \ static inline gboolean \ _gst_byte_reader_peek_##name##_inline (const GstByteReader * reader, type * val) \ { \ g_return_val_if_fail (reader != NULL, FALSE); \ g_return_val_if_fail (val != NULL, FALSE); \ \ if (_gst_byte_reader_get_remaining_unchecked (reader) < (bits / 8)) \ return FALSE; \ \ *val = gst_byte_reader_peek_##name##_unchecked (reader); \ return TRUE; \ } \ \ static inline gboolean \ _gst_byte_reader_get_##name##_inline (GstByteReader * reader, type * val) \ { \ g_return_val_if_fail (reader != NULL, FALSE); \ g_return_val_if_fail (val != NULL, FALSE); \ \ if (_gst_byte_reader_get_remaining_unchecked (reader) < (bits / 8)) \ return FALSE; \ \ *val = gst_byte_reader_get_##name##_unchecked (reader); \ return TRUE; \ } __GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,guint8,uint8) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(8,gint8,int8) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,guint16,uint16_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(16,gint16,int16_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,guint32,uint32_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gint32,int32_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,guint32,uint24_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(24,gint32,int24_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,guint64,uint64_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gint64,int64_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(32,gfloat,float32_be) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_le) __GST_BYTE_READER_GET_PEEK_BITS_INLINE(64,gdouble,float64_be) #undef __GST_BYTE_READER_GET_PEEK_BITS_INLINE #ifndef GST_BYTE_READER_DISABLE_INLINES #define gst_byte_reader_get_remaining(reader) \ _gst_byte_reader_get_remaining_inline(reader) #define gst_byte_reader_get_size(reader) \ _gst_byte_reader_get_size_inline(reader) #define gst_byte_reader_get_pos(reader) \ _gst_byte_reader_get_pos_inline(reader) /* we use defines here so we can add the G_LIKELY() */ #define gst_byte_reader_get_uint8(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint8_inline(reader,val)) #define gst_byte_reader_get_int8(reader,val) \ G_LIKELY(_gst_byte_reader_get_int8_inline(reader,val)) #define gst_byte_reader_get_uint16_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint16_le_inline(reader,val)) #define gst_byte_reader_get_int16_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_int16_le_inline(reader,val)) #define gst_byte_reader_get_uint16_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint16_be_inline(reader,val)) #define gst_byte_reader_get_int16_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_int16_be_inline(reader,val)) #define gst_byte_reader_get_uint24_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint24_le_inline(reader,val)) #define gst_byte_reader_get_int24_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_int24_le_inline(reader,val)) #define gst_byte_reader_get_uint24_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint24_be_inline(reader,val)) #define gst_byte_reader_get_int24_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_int24_be_inline(reader,val)) #define gst_byte_reader_get_uint32_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint32_le_inline(reader,val)) #define gst_byte_reader_get_int32_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_int32_le_inline(reader,val)) #define gst_byte_reader_get_uint32_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint32_be_inline(reader,val)) #define gst_byte_reader_get_int32_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_int32_be_inline(reader,val)) #define gst_byte_reader_get_uint64_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint64_le_inline(reader,val)) #define gst_byte_reader_get_int64_le(reader,val) \ G_LIKELY(_gst_byte_reader_get_int64_le_inline(reader,val)) #define gst_byte_reader_get_uint64_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_uint64_be_inline(reader,val)) #define gst_byte_reader_get_int64_be(reader,val) \ G_LIKELY(_gst_byte_reader_get_int64_be_inline(reader,val)) #define gst_byte_reader_peek_uint8(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint8_inline(reader,val)) #define gst_byte_reader_peek_int8(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int8_inline(reader,val)) #define gst_byte_reader_peek_uint16_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint16_le_inline(reader,val)) #define gst_byte_reader_peek_int16_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int16_le_inline(reader,val)) #define gst_byte_reader_peek_uint16_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint16_be_inline(reader,val)) #define gst_byte_reader_peek_int16_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int16_be_inline(reader,val)) #define gst_byte_reader_peek_uint24_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint24_le_inline(reader,val)) #define gst_byte_reader_peek_int24_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int24_le_inline(reader,val)) #define gst_byte_reader_peek_uint24_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint24_be_inline(reader,val)) #define gst_byte_reader_peek_int24_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int24_be_inline(reader,val)) #define gst_byte_reader_peek_uint32_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint32_le_inline(reader,val)) #define gst_byte_reader_peek_int32_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int32_le_inline(reader,val)) #define gst_byte_reader_peek_uint32_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint32_be_inline(reader,val)) #define gst_byte_reader_peek_int32_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int32_be_inline(reader,val)) #define gst_byte_reader_peek_uint64_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint64_le_inline(reader,val)) #define gst_byte_reader_peek_int64_le(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int64_le_inline(reader,val)) #define gst_byte_reader_peek_uint64_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_uint64_be_inline(reader,val)) #define gst_byte_reader_peek_int64_be(reader,val) \ G_LIKELY(_gst_byte_reader_peek_int64_be_inline(reader,val)) #define gst_byte_reader_get_float32_le(reader,val) \ 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) { g_return_val_if_fail (reader != NULL, FALSE); g_return_val_if_fail (val != NULL, FALSE); 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) { g_return_val_if_fail (reader != NULL, FALSE); g_return_val_if_fail (val != NULL, FALSE); 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 (const GstByteReader * reader, guint size, const guint8 ** val) { g_return_val_if_fail (reader != NULL, FALSE); g_return_val_if_fail (val != NULL, FALSE); 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 guint _gst_byte_reader_get_pos_inline (const GstByteReader * reader) { g_return_val_if_fail (reader != NULL, 0); return _gst_byte_reader_get_pos_unchecked (reader); } static inline gboolean _gst_byte_reader_skip_inline (GstByteReader * reader, guint nbytes) { g_return_val_if_fail (reader != NULL, FALSE); if (G_UNLIKELY (_gst_byte_reader_get_remaining_unchecked (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__ */