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64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
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/* GStreamer
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* Copyright (C) 2007 Jan Schmidt <thaytan@mad.scientist.com>
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* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __MPEGUTIL_H__
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#define __MPEGUTIL_H__
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#include <gst/gst.h>
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typedef struct MPEGSeqHdr MPEGSeqHdr;
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/* Packet ID codes for different packet types we
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* care about */
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#define MPEG_PACKET_PICTURE 0x00
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#define MPEG_PACKET_SLICE_MIN 0x01
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#define MPEG_PACKET_SLICE_MAX 0xaf
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#define MPEG_PACKET_SEQUENCE 0xb3
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#define MPEG_PACKET_EXTENSION 0xb5
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#define MPEG_PACKET_SEQUENCE_END 0xb7
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#define MPEG_PACKET_GOP 0xb8
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#define MPEG_PACKET_NONE 0xff
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/* Extension codes we care about */
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#define MPEG_PACKET_EXT_SEQUENCE 0x01
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#define MPEG_PACKET_EXT_SEQUENCE_DISPLAY 0x02
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#define MPEG_PACKET_EXT_QUANT_MATRIX 0x03
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struct MPEGSeqHdr
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{
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/* 0 for unknown, else 1 or 2 */
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guint8 mpeg_version;
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/* Pixel-Aspect Ratio from DAR code via set_par_from_dar */
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gint par_w, par_h;
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/* Width and Height of the video */
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gint width, height;
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/* Framerate */
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gint fps_n, fps_d;
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/* mpeg2 decoder profile */
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gint profile;
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};
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gboolean mpeg_util_parse_sequence_hdr (MPEGSeqHdr *hdr,
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guint8 *data, guint8 *end);
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#endif
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