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74 lines
2.1 KiB
74 lines
2.1 KiB
/*
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* section and descriptor parser
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*
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* Copyright (C) 2005 Kenneth Aafloy (kenneth@linuxtv.org)
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* Copyright (C) 2005 Andrew de Quincey (adq_dvb@lidskialf.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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef _UCSI_MPEG_DATA_STREAM_ALIGNMENT_DESCRIPTOR
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#define _UCSI_MPEG_DATA_STREAM_ALIGNMENT_DESCRIPTOR 1
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include <libucsi/descriptor.h>
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#include <libucsi/endianops.h>
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/**
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* Possible values for alignment_type.
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*/
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enum {
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MPEG_DATA_STREAM_ALIGNMENT_VIDEO_SLICE_OR_AU = 0x01,
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MPEG_DATA_STREAM_ALIGNMENT_VIDEO_AU = 0x02,
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MPEG_DATA_STREAM_ALIGNMENT_VIDEO_GOP_OR_SEQ = 0x03,
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MPEG_DATA_STREAM_ALIGNMENT_VIDEO_SEQ = 0x04,
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MPEG_DATA_STREAM_ALIGNMENT_AUDIO_SYNC_WORD = 0x01,
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};
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/**
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* mpeg_data_stream_alignment_descriptor structure.
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*/
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struct mpeg_data_stream_alignment_descriptor {
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struct descriptor d;
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uint8_t alignment_type;
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} __ucsi_packed;
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/**
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* Process an mpeg_data_stream_alignment_descriptor.
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*
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* @param d Pointer to generic descriptor structure.
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* @return Pointer to mpeg_data_stream_alignment_descriptor, or NULL on error.
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*/
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static inline struct mpeg_data_stream_alignment_descriptor*
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mpeg_data_stream_alignment_descriptor_codec(struct descriptor* d)
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{
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if (d->len != (sizeof(struct mpeg_data_stream_alignment_descriptor) - 2))
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return NULL;
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return (struct mpeg_data_stream_alignment_descriptor*) d;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif
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