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cea403eaa5
We know we will not overflow 64 bits, therefore just use direct multiplication/division instead of the scale method (trims usage from 50 instruction calls to 2/3).
114 lines
4.3 KiB
C
114 lines
4.3 KiB
C
/*
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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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* The Original Code is Fluendo MPEG Demuxer plugin.
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*
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* The Initial Developer of the Original Code is Fluendo, S.L.
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* Portions created by Fluendo, S.L. are Copyright (C) 2005
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* Fluendo, S.L. All Rights Reserved.
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*
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* Contributor(s): Wim Taymans <wim@fluendo.com>
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*/
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#ifndef __GST_MPEG_DEFS_H__
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#define __GST_MPEG_DEFS_H__
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#include <glib/gprintf.h>
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#define SAFE_FOURCC_FORMAT "02x%02x%02x%02x (%c%c%c%c)"
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#define SAFE_CHAR(a) (g_ascii_isalnum((gchar) (a)) ? ((gchar)(a)) : '.')
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#define SAFE_FOURCC_ARGS(a) \
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((guint8) ((a)>>24)), \
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((guint8) ((a) >> 16 & 0xff)), \
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((guint8) a >> 8 & 0xff), \
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((guint8) a & 0xff), \
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SAFE_CHAR((a)>>24), \
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SAFE_CHAR((a) >> 16 & 0xff), \
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SAFE_CHAR((a) >> 8 & 0xff), \
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SAFE_CHAR(a & 0xff)
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/* Stream type assignments */
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/* FIXME: Put these in mpegts lib separate stream type enums */
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/* Un-official Dirac extension */
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#define ST_VIDEO_DIRAC 0xd1
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/* private stream types */
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#define ST_PS_VIDEO_MPEG2_DCII 0x80
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#define ST_PS_AUDIO_AC3 0x81
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#define ST_PS_AUDIO_DTS 0x8a
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#define ST_PS_AUDIO_LPCM 0x8b
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#define ST_PS_DVD_SUBPICTURE 0xff
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/* Blu-ray related (registration: 'HDMV'*/
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#define ST_BD_AUDIO_LPCM 0x80
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#define ST_BD_AUDIO_AC3 0x81
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#define ST_BD_AUDIO_DTS 0x82
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#define ST_BD_AUDIO_AC3_TRUE_HD 0x83
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#define ST_BD_AUDIO_AC3_PLUS 0x84
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#define ST_BD_AUDIO_DTS_HD 0x85
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#define ST_BD_AUDIO_DTS_HD_MASTER_AUDIO 0x86
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#define ST_BD_AUDIO_EAC3 0x87
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#define ST_BD_PGS_SUBPICTURE 0x90
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#define ST_BD_IGS 0x91
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#define ST_BD_SUBTITLE 0x92
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#define ST_BD_SECONDARY_AC3_PLUS 0xa1
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#define ST_BD_SECONDARY_DTS_HD 0xa2
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/* defined for VC1 extension in RP227 */
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#define ST_PRIVATE_EA 0xea
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/* Following only apply for streams identified as HDV,
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* According to specification 61834-11 the PMT will use
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* a registration descriptor with values TSMV or TSHV */
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/* HDV AUX stream mapping
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* 0xA0 ISO/IEC 61834-11
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* 0xA1 ISO/IEC 61834-11
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*/
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#define ST_HDV_AUX_A 0xa0
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#define ST_HDV_AUX_V 0xa1
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#define CLOCK_BASE 9LL
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#define CLOCK_FREQ (CLOCK_BASE * 10000)
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/* PCR_TO_GST calculation requires at least 10 extra bits.
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* Since maximum PCR value is coded with 42 bits, we are
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* safe to use direct calculation (10+42 < 63)*/
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#define PCRTIME_TO_GSTTIME(t) ((t) * 1000 / 27)
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/* MPEG_TO_GST calculation requires at least 17 extra bits (100000)
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* Since maximum PTS/DTS value is coded with 33bits, we are
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* safe to use direct calculation (17+33 < 63) */
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#define MPEGTIME_TO_GSTTIME(t) ((t) * 100000 / 9)
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#define GSTTIME_TO_MPEGTIME(time) (gst_util_uint64_scale ((time), \
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CLOCK_BASE, GST_MSECOND/10))
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#define GSTTIME_TO_PCRTIME(time) (gst_util_uint64_scale ((time), \
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300 * CLOCK_BASE, GST_MSECOND/10))
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#define MPEG_MUX_RATE_MULT 50
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/* sync:4 == 00xx ! pts:3 ! 1 ! pts:15 ! 1 | pts:15 ! 1 */
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#define READ_TS(data, target, lost_sync_label) \
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if ((*data & 0x01) != 0x01) goto lost_sync_label; \
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target = ((guint64) (*data++ & 0x0E)) << 29; \
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target |= ((guint64) (*data++ )) << 22; \
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if ((*data & 0x01) != 0x01) goto lost_sync_label; \
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target |= ((guint64) (*data++ & 0xFE)) << 14; \
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target |= ((guint64) (*data++ )) << 7; \
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if ((*data & 0x01) != 0x01) goto lost_sync_label; \
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target |= ((guint64) (*data++ & 0xFE)) >> 1;
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#endif /* __GST_MPEG_DEFS_H__ */
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