mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-20 23:36:38 +00:00
108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* Gstreamer
|
|
* Copyright (C) <2011> Intel
|
|
* Copyright (C) <2011> Collabora Ltd.
|
|
* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.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 __PARSER_UTILS__
|
|
#define __PARSER_UTILS__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbitreader.h>
|
|
|
|
/* Parsing utils */
|
|
#define GET_BITS(b, num, bits) G_STMT_START { \
|
|
if (!gst_bit_reader_get_bits_uint32(b, bits, num)) \
|
|
goto failed; \
|
|
GST_TRACE ("parsed %d bits: %d", num, *(bits)); \
|
|
} G_STMT_END
|
|
|
|
#define CHECK_ALLOWED(val, min, max) G_STMT_START { \
|
|
if (val < min || val > max) { \
|
|
GST_WARNING ("value not in allowed range. value: %d, range %d-%d", \
|
|
val, min, max); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
#define READ_UINT8(reader, val, nbits) G_STMT_START { \
|
|
if (!gst_bit_reader_get_bits_uint8 (reader, &val, nbits)) { \
|
|
GST_WARNING ("failed to read uint8, nbits: %d", nbits); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
#define READ_UINT16(reader, val, nbits) G_STMT_START { \
|
|
if (!gst_bit_reader_get_bits_uint16 (reader, &val, nbits)) { \
|
|
GST_WARNING ("failed to read uint16, nbits: %d", nbits); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
#define READ_UINT32(reader, val, nbits) G_STMT_START { \
|
|
if (!gst_bit_reader_get_bits_uint32 (reader, &val, nbits)) { \
|
|
GST_WARNING ("failed to read uint32, nbits: %d", nbits); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
#define READ_UINT64(reader, val, nbits) G_STMT_START { \
|
|
if (!gst_bit_reader_get_bits_uint64 (reader, &val, nbits)) { \
|
|
GST_WARNING ("failed to read uint64, nbits: %d", nbits); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
|
|
#define U_READ_UINT8(reader, val, nbits) G_STMT_START { \
|
|
val = gst_bit_reader_get_bits_uint8_unchecked (reader, nbits); \
|
|
} G_STMT_END
|
|
|
|
#define U_READ_UINT16(reader, val, nbits) G_STMT_START { \
|
|
val = gst_bit_reader_get_bits_uint16_unchecked (reader, nbits); \
|
|
} G_STMT_END
|
|
|
|
#define U_READ_UINT32(reader, val, nbits) G_STMT_START { \
|
|
val = gst_bit_reader_get_bits_uint32_unchecked (reader, nbits); \
|
|
} G_STMT_END
|
|
|
|
#define U_READ_UINT64(reader, val, nbits) G_STMT_START { \
|
|
val = gst_bit_reader_get_bits_uint64_unchecked (reader, nbits); \
|
|
} G_STMT_END
|
|
|
|
#define SKIP(reader, nbits) G_STMT_START { \
|
|
if (!gst_bit_reader_skip (reader, nbits)) { \
|
|
GST_WARNING ("failed to skip nbits: %d", nbits); \
|
|
goto failed; \
|
|
} \
|
|
} G_STMT_END
|
|
|
|
typedef struct _VLCTable VLCTable;
|
|
|
|
struct _VLCTable
|
|
{
|
|
guint value;
|
|
guint cword;
|
|
guint cbits;
|
|
};
|
|
|
|
gboolean
|
|
decode_vlc (GstBitReader * br, guint * res, const VLCTable * table,
|
|
guint length);
|
|
|
|
#endif /* __PARSER_UTILS__ */
|