| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (C) 2008 David Conrad | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "libavutil/imgutils.h" | ||
| 22 | #include "libavutil/intreadwrite.h" | ||
| 23 | #include "libavutil/mem.h" | ||
| 24 | #include "libavcodec/dirac.h" | ||
| 25 | #include "avformat.h" | ||
| 26 | #include "internal.h" | ||
| 27 | #include "oggdec.h" | ||
| 28 | |||
| 29 | ✗ | static int dirac_header(AVFormatContext *s, int idx) | |
| 30 | { | ||
| 31 | ✗ | struct ogg *ogg = s->priv_data; | |
| 32 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 33 | ✗ | AVStream *st = s->streams[idx]; | |
| 34 | AVDiracSeqHeader *dsh; | ||
| 35 | int ret; | ||
| 36 | |||
| 37 | // already parsed the header | ||
| 38 | ✗ | if (st->codecpar->codec_id == AV_CODEC_ID_DIRAC) | |
| 39 | ✗ | return 0; | |
| 40 | |||
| 41 | ✗ | ret = av_dirac_parse_sequence_header(&dsh, os->buf + os->pstart + 13, (os->psize - 13), s); | |
| 42 | ✗ | if (ret < 0) | |
| 43 | ✗ | return ret; | |
| 44 | |||
| 45 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 46 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_DIRAC; | |
| 47 | ✗ | st->codecpar->width = dsh->width; | |
| 48 | ✗ | st->codecpar->height = dsh->height; | |
| 49 | ✗ | st->codecpar->format = dsh->pix_fmt; | |
| 50 | ✗ | st->codecpar->color_range = dsh->color_range; | |
| 51 | ✗ | st->codecpar->color_trc = dsh->color_trc; | |
| 52 | ✗ | st->codecpar->color_primaries = dsh->color_primaries; | |
| 53 | ✗ | st->codecpar->color_space = dsh->colorspace; | |
| 54 | ✗ | st->codecpar->profile = dsh->profile; | |
| 55 | ✗ | st->codecpar->level = dsh->level; | |
| 56 | ✗ | if (av_image_check_sar(st->codecpar->width, st->codecpar->height, dsh->sample_aspect_ratio) >= 0) | |
| 57 | ✗ | st->sample_aspect_ratio = dsh->sample_aspect_ratio; | |
| 58 | |||
| 59 | // Dirac in Ogg always stores timestamps as though the video were interlaced | ||
| 60 | ✗ | avpriv_set_pts_info(st, 64, dsh->framerate.den, 2 * dsh->framerate.num); | |
| 61 | |||
| 62 | ✗ | av_freep(&dsh); | |
| 63 | ✗ | return 1; | |
| 64 | } | ||
| 65 | |||
| 66 | // various undocumented things: granule is signed (only for Dirac!) | ||
| 67 | ✗ | static uint64_t dirac_gptopts(AVFormatContext *s, int idx, uint64_t granule, | |
| 68 | int64_t *dts_out) | ||
| 69 | { | ||
| 70 | ✗ | int64_t gp = granule; | |
| 71 | ✗ | struct ogg *ogg = s->priv_data; | |
| 72 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 73 | |||
| 74 | ✗ | unsigned dist = ((gp >> 14) & 0xff00) | (gp & 0xff); | |
| 75 | ✗ | int64_t dts = (gp >> 31); | |
| 76 | ✗ | int64_t pts = dts + ((gp >> 9) & 0x1fff); | |
| 77 | |||
| 78 | ✗ | if (!dist) | |
| 79 | ✗ | os->pflags |= AV_PKT_FLAG_KEY; | |
| 80 | |||
| 81 | ✗ | if (dts_out) | |
| 82 | ✗ | *dts_out = dts; | |
| 83 | |||
| 84 | ✗ | return pts; | |
| 85 | } | ||
| 86 | |||
| 87 | ✗ | static int old_dirac_header(AVFormatContext *s, int idx) | |
| 88 | { | ||
| 89 | ✗ | struct ogg *ogg = s->priv_data; | |
| 90 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 91 | ✗ | AVStream *st = s->streams[idx]; | |
| 92 | ✗ | uint8_t *buf = os->buf + os->pstart; | |
| 93 | |||
| 94 | ✗ | if (buf[0] != 'K') | |
| 95 | ✗ | return 0; | |
| 96 | |||
| 97 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 98 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_DIRAC; | |
| 99 | ✗ | avpriv_set_pts_info(st, 64, AV_RB32(buf+12), AV_RB32(buf+8)); | |
| 100 | ✗ | return 1; | |
| 101 | } | ||
| 102 | |||
| 103 | ✗ | static uint64_t old_dirac_gptopts(AVFormatContext *s, int idx, uint64_t gp, | |
| 104 | int64_t *dts) | ||
| 105 | { | ||
| 106 | ✗ | struct ogg *ogg = s->priv_data; | |
| 107 | ✗ | struct ogg_stream *os = ogg->streams + idx; | |
| 108 | ✗ | uint64_t iframe = gp >> 30; | |
| 109 | ✗ | uint64_t pframe = gp & 0x3fffffff; | |
| 110 | |||
| 111 | ✗ | if (!pframe) | |
| 112 | ✗ | os->pflags |= AV_PKT_FLAG_KEY; | |
| 113 | |||
| 114 | ✗ | return iframe + pframe; | |
| 115 | } | ||
| 116 | |||
| 117 | const struct ogg_codec ff_dirac_codec = { | ||
| 118 | .magic = "BBCD\0", | ||
| 119 | .magicsize = 5, | ||
| 120 | .header = dirac_header, | ||
| 121 | .gptopts = dirac_gptopts, | ||
| 122 | .granule_is_start = 1, | ||
| 123 | .nb_header = 1, | ||
| 124 | }; | ||
| 125 | |||
| 126 | const struct ogg_codec ff_old_dirac_codec = { | ||
| 127 | .magic = "KW-DIRAC", | ||
| 128 | .magicsize = 8, | ||
| 129 | .header = old_dirac_header, | ||
| 130 | .gptopts = old_dirac_gptopts, | ||
| 131 | .granule_is_start = 1, | ||
| 132 | .nb_header = 1, | ||
| 133 | }; | ||
| 134 |