| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * SER demuxer | ||
| 3 | * Copyright (c) 2018 Paul B Mahol | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | #include "libavutil/imgutils.h" | ||
| 23 | #include "libavutil/parseutils.h" | ||
| 24 | #include "libavutil/pixdesc.h" | ||
| 25 | #include "libavutil/opt.h" | ||
| 26 | #include "demux.h" | ||
| 27 | #include "internal.h" | ||
| 28 | #include "avformat.h" | ||
| 29 | |||
| 30 | #define SER_MAGIC "LUCAM-RECORDER" | ||
| 31 | |||
| 32 | typedef struct SERDemuxerContext { | ||
| 33 | const AVClass *class; | ||
| 34 | int width, height; | ||
| 35 | AVRational framerate; | ||
| 36 | int64_t end; | ||
| 37 | } SERDemuxerContext; | ||
| 38 | |||
| 39 | 7186 | static int ser_probe(const AVProbeData *pd) | |
| 40 | { | ||
| 41 |
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7186 | if (memcmp(pd->buf, SER_MAGIC, 14) == 0) |
| 42 | ✗ | return AVPROBE_SCORE_MAX; | |
| 43 | else | ||
| 44 | 7186 | return 0; | |
| 45 | } | ||
| 46 | |||
| 47 | ✗ | static int ser_read_header(AVFormatContext *s) | |
| 48 | { | ||
| 49 | ✗ | SERDemuxerContext *ser = s->priv_data; | |
| 50 | enum AVPixelFormat pix_fmt; | ||
| 51 | int depth, color_id, endian; | ||
| 52 | int packet_size; | ||
| 53 | AVStream *st; | ||
| 54 | |||
| 55 | ✗ | st = avformat_new_stream(s, NULL); | |
| 56 | ✗ | if (!st) | |
| 57 | ✗ | return AVERROR(ENOMEM); | |
| 58 | |||
| 59 | ✗ | avio_skip(s->pb, 14); | |
| 60 | ✗ | avio_skip(s->pb, 4); | |
| 61 | ✗ | color_id = avio_rl32(s->pb); | |
| 62 | ✗ | endian = avio_rl32(s->pb); | |
| 63 | ✗ | ser->width = avio_rl32(s->pb); | |
| 64 | ✗ | ser->height = avio_rl32(s->pb); | |
| 65 | ✗ | depth = avio_rl32(s->pb); | |
| 66 | ✗ | st->nb_frames = st->duration = avio_rl32(s->pb); | |
| 67 | ✗ | avio_skip(s->pb, 120); | |
| 68 | ✗ | avio_skip(s->pb, 8); | |
| 69 | ✗ | avio_skip(s->pb, 8); | |
| 70 | |||
| 71 | ✗ | switch (color_id) { | |
| 72 | ✗ | case 0: pix_fmt = depth <= 8 ? AV_PIX_FMT_GRAY8 : endian ? AV_PIX_FMT_GRAY16BE : AV_PIX_FMT_GRAY16LE; break; | |
| 73 | ✗ | case 8: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_RGGB8 : endian ? AV_PIX_FMT_BAYER_RGGB16BE : AV_PIX_FMT_BAYER_RGGB16LE; break; | |
| 74 | ✗ | case 9: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_GRBG8 : endian ? AV_PIX_FMT_BAYER_GRBG16BE : AV_PIX_FMT_BAYER_GRBG16LE; break; | |
| 75 | ✗ | case 10: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_GBRG8 : endian ? AV_PIX_FMT_BAYER_GBRG16BE : AV_PIX_FMT_BAYER_GBRG16LE; break; | |
| 76 | ✗ | case 11: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_BGGR8 : endian ? AV_PIX_FMT_BAYER_BGGR16BE : AV_PIX_FMT_BAYER_BGGR16LE; break; | |
| 77 | ✗ | case 100: pix_fmt = depth <= 8 ? AV_PIX_FMT_RGB24 : endian ? AV_PIX_FMT_RGB48BE : AV_PIX_FMT_RGB48LE; break; | |
| 78 | ✗ | case 101: pix_fmt = depth <= 8 ? AV_PIX_FMT_BGR24 : endian ? AV_PIX_FMT_BGR48BE : AV_PIX_FMT_BGR48LE; break; | |
| 79 | ✗ | default: | |
| 80 | ✗ | return AVERROR_PATCHWELCOME; | |
| 81 | } | ||
| 82 | |||
| 83 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 84 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; | |
| 85 | |||
| 86 | ✗ | avpriv_set_pts_info(st, 64, ser->framerate.den, ser->framerate.num); | |
| 87 | |||
| 88 | ✗ | st->codecpar->width = ser->width; | |
| 89 | ✗ | st->codecpar->height = ser->height; | |
| 90 | ✗ | st->codecpar->format = pix_fmt; | |
| 91 | ✗ | packet_size = av_image_get_buffer_size(st->codecpar->format, ser->width, ser->height, 1); | |
| 92 | ✗ | if (packet_size < 0) | |
| 93 | ✗ | return packet_size; | |
| 94 | ✗ | ser->end = 178 + st->nb_frames * packet_size; | |
| 95 | ✗ | s->packet_size = packet_size; | |
| 96 | ✗ | st->codecpar->bit_rate = av_rescale_q(s->packet_size, | |
| 97 | ✗ | (AVRational){8,1}, st->time_base); | |
| 98 | |||
| 99 | ✗ | return 0; | |
| 100 | } | ||
| 101 | |||
| 102 | |||
| 103 | ✗ | static int ser_read_packet(AVFormatContext *s, AVPacket *pkt) | |
| 104 | { | ||
| 105 | ✗ | SERDemuxerContext *ser = s->priv_data; | |
| 106 | int64_t pos; | ||
| 107 | int ret; | ||
| 108 | |||
| 109 | ✗ | pos = avio_tell(s->pb); | |
| 110 | ✗ | if (pos >= ser->end) | |
| 111 | ✗ | return AVERROR_EOF; | |
| 112 | |||
| 113 | ✗ | ret = av_get_packet(s->pb, pkt, s->packet_size); | |
| 114 | ✗ | pkt->pts = pkt->dts = (pkt->pos - ffformatcontext(s)->data_offset) / s->packet_size; | |
| 115 | |||
| 116 | ✗ | pkt->stream_index = 0; | |
| 117 | ✗ | if (ret < 0) | |
| 118 | ✗ | return ret; | |
| 119 | ✗ | return 0; | |
| 120 | } | ||
| 121 | |||
| 122 | #define OFFSET(x) offsetof(SERDemuxerContext, x) | ||
| 123 | #define DEC AV_OPT_FLAG_DECODING_PARAM | ||
| 124 | static const AVOption ser_options[] = { | ||
| 125 | { "framerate", "set frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC }, | ||
| 126 | { NULL }, | ||
| 127 | }; | ||
| 128 | |||
| 129 | static const AVClass ser_demuxer_class = { | ||
| 130 | .class_name = "ser demuxer", | ||
| 131 | .item_name = av_default_item_name, | ||
| 132 | .option = ser_options, | ||
| 133 | .version = LIBAVUTIL_VERSION_INT, | ||
| 134 | }; | ||
| 135 | |||
| 136 | const FFInputFormat ff_ser_demuxer = { | ||
| 137 | .p.name = "ser", | ||
| 138 | .p.long_name = NULL_IF_CONFIG_SMALL("SER (Simple uncompressed video format for astronomical capturing)"), | ||
| 139 | .p.flags = AVFMT_GENERIC_INDEX, | ||
| 140 | .p.extensions = "ser", | ||
| 141 | .p.priv_class = &ser_demuxer_class, | ||
| 142 | .priv_data_size = sizeof(SERDemuxerContext), | ||
| 143 | .read_probe = ser_probe, | ||
| 144 | .read_header = ser_read_header, | ||
| 145 | .read_packet = ser_read_packet, | ||
| 146 | .raw_codec_id = AV_CODEC_ID_RAWVIDEO, | ||
| 147 | }; | ||
| 148 |