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108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/* Gstreamer
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* Copyright (C) <2011> Intel
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* Copyright (C) <2011> Collabora Ltd.
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* Copyright (C) <2011> Thibault Saunier <thibault.saunier@collabora.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __PARSER_UTILS__
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#define __PARSER_UTILS__
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#include <gst/gst.h>
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#include <gst/base/gstbitreader.h>
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/* Parsing utils */
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#define GET_BITS(b, num, bits) G_STMT_START { \
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if (!gst_bit_reader_get_bits_uint32(b, bits, num)) \
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goto failed; \
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GST_TRACE ("parsed %d bits: %d", num, *(bits)); \
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} G_STMT_END
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#define CHECK_ALLOWED(val, min, max) G_STMT_START { \
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if (val < min || val > max) { \
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GST_WARNING ("value not in allowed range. value: %d, range %d-%d", \
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val, min, max); \
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goto failed; \
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} \
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} G_STMT_END
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#define READ_UINT8(reader, val, nbits) G_STMT_START { \
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if (!gst_bit_reader_get_bits_uint8 (reader, &val, nbits)) { \
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GST_WARNING ("failed to read uint8, nbits: %d", nbits); \
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goto failed; \
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} \
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} G_STMT_END
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#define READ_UINT16(reader, val, nbits) G_STMT_START { \
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if (!gst_bit_reader_get_bits_uint16 (reader, &val, nbits)) { \
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GST_WARNING ("failed to read uint16, nbits: %d", nbits); \
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goto failed; \
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} \
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} G_STMT_END
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#define READ_UINT32(reader, val, nbits) G_STMT_START { \
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if (!gst_bit_reader_get_bits_uint32 (reader, &val, nbits)) { \
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GST_WARNING ("failed to read uint32, nbits: %d", nbits); \
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goto failed; \
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} \
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} G_STMT_END
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#define READ_UINT64(reader, val, nbits) G_STMT_START { \
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if (!gst_bit_reader_get_bits_uint64 (reader, &val, nbits)) { \
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GST_WARNING ("failed to read uint64, nbits: %d", nbits); \
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goto failed; \
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} \
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} G_STMT_END
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#define U_READ_UINT8(reader, val, nbits) G_STMT_START { \
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val = gst_bit_reader_get_bits_uint8_unchecked (reader, nbits); \
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} G_STMT_END
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#define U_READ_UINT16(reader, val, nbits) G_STMT_START { \
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val = gst_bit_reader_get_bits_uint16_unchecked (reader, nbits); \
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} G_STMT_END
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#define U_READ_UINT32(reader, val, nbits) G_STMT_START { \
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val = gst_bit_reader_get_bits_uint32_unchecked (reader, nbits); \
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} G_STMT_END
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#define U_READ_UINT64(reader, val, nbits) G_STMT_START { \
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val = gst_bit_reader_get_bits_uint64_unchecked (reader, nbits); \
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} G_STMT_END
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#define SKIP(reader, nbits) G_STMT_START { \
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if (!gst_bit_reader_skip (reader, nbits)) { \
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GST_WARNING ("failed to skip nbits: %d", nbits); \
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goto failed; \
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} \
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} G_STMT_END
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typedef struct _VLCTable VLCTable;
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struct _VLCTable
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{
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guint value;
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guint cword;
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guint cbits;
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};
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G_GNUC_INTERNAL gboolean
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decode_vlc (GstBitReader * br, guint * res, const VLCTable * table,
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guint length);
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#endif /* __PARSER_UTILS__ */
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