mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
c7a852b638
Current code will call avpriv_set_pts_info() for each video frame, possibly setting a different timebase if the stream framerate changes. This violates API conventions, as the timebase is supposed to stay constant after stream creation. Change the demuxer to set a single timebase that is fine enough to handle all supported DV framerates. The seek tests change slightly because the new timebase is more granular.
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
|
|
* Constants for DV codec
|
|
* Copyright (c) 2002 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Constants for DV codec.
|
|
*/
|
|
|
|
#ifndef AVCODEC_DV_H
|
|
#define AVCODEC_DV_H
|
|
|
|
enum DVSectionType {
|
|
DV_SECT_HEADER = 0x1f,
|
|
DV_SECT_SUBCODE = 0x3f,
|
|
DV_SECT_VAUX = 0x56,
|
|
DV_SECT_AUDIO = 0x76,
|
|
DV_SECT_VIDEO = 0x96,
|
|
};
|
|
|
|
enum DVPackType {
|
|
DV_HEADER525 = 0x3f, /* see dv_write_pack for important details on */
|
|
DV_HEADER625 = 0xbf, /* these two packs */
|
|
DV_TIMECODE = 0x13,
|
|
DV_AUDIO_SOURCE = 0x50,
|
|
DV_AUDIO_CONTROL = 0x51,
|
|
DV_AUDIO_RECDATE = 0x52,
|
|
DV_AUDIO_RECTIME = 0x53,
|
|
DV_VIDEO_SOURCE = 0x60,
|
|
DV_VIDEO_CONTROL = 0x61,
|
|
DV_VIDEO_RECDATE = 0x62,
|
|
DV_VIDEO_RECTIME = 0x63,
|
|
DV_UNKNOWN_PACK = 0xff,
|
|
};
|
|
|
|
#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
|
|
#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
|
|
#define DV_PROFILE_IS_1080i60(p) (((p)->video_stype == 0x14) && ((p)->dsf == 0))
|
|
#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))
|
|
|
|
/**
|
|
* largest possible DV frame, in bytes (1080i50)
|
|
*/
|
|
#define DV_MAX_FRAME_SIZE 576000
|
|
|
|
// LCM of video framerate numerators
|
|
#define DV_TIMESCALE_VIDEO 60000
|
|
|
|
/**
|
|
* maximum number of blocks per macroblock in any DV format
|
|
*/
|
|
#define DV_MAX_BPM 8
|
|
|
|
#endif /* AVCODEC_DV_H */
|