diff options
author | Paul B Mahol <onemda@gmail.com> | 2018-10-12 11:33:29 +0200 |
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committer | Paul B Mahol <onemda@gmail.com> | 2018-10-13 15:40:08 +0200 |
commit | 0709b0561f10b70172dac3dd42383abb998d9b2f (patch) | |
tree | 47950671b936eae6c18ddbb5cebe38f3b5c66990 /libavformat | |
parent | 296609f859a587575b91fe9e9691f2707d6e8136 (diff) | |
download | ffmpeg-0709b0561f10b70172dac3dd42383abb998d9b2f.tar.gz |
avformat: add SER demuxer
Diffstat (limited to 'libavformat')
-rw-r--r-- | libavformat/Makefile | 1 | ||||
-rw-r--r-- | libavformat/allformats.c | 1 | ||||
-rw-r--r-- | libavformat/serdec.c | 146 | ||||
-rw-r--r-- | libavformat/version.h | 4 |
4 files changed, 150 insertions, 2 deletions
diff --git a/libavformat/Makefile b/libavformat/Makefile index e0222535c1..e99e9150d5 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -467,6 +467,7 @@ OBJS-$(CONFIG_SDX_DEMUXER) += sdxdec.o OBJS-$(CONFIG_SEGAFILM_DEMUXER) += segafilm.o OBJS-$(CONFIG_SEGAFILM_MUXER) += segafilmenc.o OBJS-$(CONFIG_SEGMENT_MUXER) += segment.o +OBJS-$(CONFIG_SER_DEMUXER) += serdec.o OBJS-$(CONFIG_SHORTEN_DEMUXER) += shortendec.o rawdec.o OBJS-$(CONFIG_SIFF_DEMUXER) += siff.o OBJS-$(CONFIG_SINGLEJPEG_MUXER) += rawenc.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 5c32ee6dff..9e41718685 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -367,6 +367,7 @@ extern AVInputFormat ff_segafilm_demuxer; extern AVOutputFormat ff_segafilm_muxer; extern AVOutputFormat ff_segment_muxer; extern AVOutputFormat ff_stream_segment_muxer; +extern AVInputFormat ff_ser_demuxer; extern AVInputFormat ff_shorten_demuxer; extern AVInputFormat ff_siff_demuxer; extern AVOutputFormat ff_singlejpeg_muxer; diff --git a/libavformat/serdec.c b/libavformat/serdec.c new file mode 100644 index 0000000000..25e6f635af --- /dev/null +++ b/libavformat/serdec.c @@ -0,0 +1,146 @@ +/* + * SER demuxer + * Copyright (c) 2018 Paul B Mahol + * + * 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 + */ + +#include "libavutil/imgutils.h" +#include "libavutil/parseutils.h" +#include "libavutil/pixdesc.h" +#include "libavutil/opt.h" +#include "internal.h" +#include "avformat.h" + +#define SER_MAGIC "LUCAM-RECORDER" + +typedef struct SERDemuxerContext { + const AVClass *class; + int width, height; + AVRational framerate; + int64_t end; +} SERDemuxerContext; + +static int ser_probe(AVProbeData *pd) +{ + if (memcmp(pd->buf, SER_MAGIC, 14) == 0) + return AVPROBE_SCORE_MAX; + else + return 0; +} + +static int ser_read_header(AVFormatContext *s) +{ + SERDemuxerContext *ser = s->priv_data; + enum AVPixelFormat pix_fmt; + int depth, color_id, endian; + int packet_size; + AVStream *st; + + st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + + avio_skip(s->pb, 14); + avio_skip(s->pb, 4); + color_id = avio_rl32(s->pb); + endian = avio_rl32(s->pb); + ser->width = avio_rl32(s->pb); + ser->height = avio_rl32(s->pb); + depth = avio_rl32(s->pb); + st->nb_frames = st->duration = avio_rl32(s->pb); + avio_skip(s->pb, 120); + avio_skip(s->pb, 8); + avio_skip(s->pb, 8); + + switch (color_id) { + case 0: pix_fmt = depth <= 8 ? AV_PIX_FMT_GRAY8 : endian ? AV_PIX_FMT_GRAY16LE : AV_PIX_FMT_GRAY16BE; break; + case 8: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_RGGB8 : endian ? AV_PIX_FMT_BAYER_RGGB16LE : AV_PIX_FMT_BAYER_RGGB16BE; break; + case 9: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_GRBG8 : endian ? AV_PIX_FMT_BAYER_GRBG16LE : AV_PIX_FMT_BAYER_GRBG16BE; break; + case 10: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_GBRG8 : endian ? AV_PIX_FMT_BAYER_GBRG16LE : AV_PIX_FMT_BAYER_GBRG16BE; break; + case 11: pix_fmt = depth <= 8 ? AV_PIX_FMT_BAYER_BGGR8 : endian ? AV_PIX_FMT_BAYER_BGGR16LE : AV_PIX_FMT_BAYER_BGGR16BE; break; + case 100: pix_fmt = depth <= 8 ? AV_PIX_FMT_RGB24 : endian ? AV_PIX_FMT_RGB48LE : AV_PIX_FMT_RGB48BE; break; + case 101: pix_fmt = depth <= 8 ? AV_PIX_FMT_BGR24 : endian ? AV_PIX_FMT_BGR48LE : AV_PIX_FMT_BGR48BE; break; + default: + return AVERROR_PATCHWELCOME; + } + + st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; + st->codecpar->codec_id = s->iformat->raw_codec_id; + + avpriv_set_pts_info(st, 64, ser->framerate.den, ser->framerate.num); + + st->codecpar->width = ser->width; + st->codecpar->height = ser->height; + st->codecpar->format = pix_fmt; + packet_size = av_image_get_buffer_size(st->codecpar->format, ser->width, ser->height, 1); + if (packet_size < 0) + return packet_size; + ser->end = 178 + st->nb_frames * packet_size; + s->packet_size = packet_size; + st->codecpar->bit_rate = av_rescale_q(s->packet_size, + (AVRational){8,1}, st->time_base); + + return 0; +} + + +static int ser_read_packet(AVFormatContext *s, AVPacket *pkt) +{ + SERDemuxerContext *ser = s->priv_data; + int64_t pos; + int ret; + + pos = avio_tell(s->pb); + if (pos >= ser->end) + return AVERROR_EOF; + + ret = av_get_packet(s->pb, pkt, s->packet_size); + pkt->pts = pkt->dts = (pkt->pos - s->internal->data_offset) / s->packet_size; + + pkt->stream_index = 0; + if (ret < 0) + return ret; + return 0; +} + +#define OFFSET(x) offsetof(SERDemuxerContext, x) +#define DEC AV_OPT_FLAG_DECODING_PARAM +static const AVOption ser_options[] = { + { "framerate", "set frame rate", OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, {.str = "25"}, 0, INT_MAX, DEC }, + { NULL }, +}; + +static const AVClass ser_demuxer_class = { + .class_name = "ser demuxer", + .item_name = av_default_item_name, + .option = ser_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +AVInputFormat ff_ser_demuxer = { + .name = "ser", + .long_name = NULL_IF_CONFIG_SMALL("SER (Simple uncompressed video format for astronomical capturing)"), + .priv_data_size = sizeof(SERDemuxerContext), + .read_probe = ser_probe, + .read_header = ser_read_header, + .read_packet = ser_read_packet, + .flags = AVFMT_GENERIC_INDEX, + .extensions = "ser", + .raw_codec_id = AV_CODEC_ID_RAWVIDEO, + .priv_class = &ser_demuxer_class, +}; diff --git a/libavformat/version.h b/libavformat/version.h index 6c996b9874..e4a69071d4 100644 --- a/libavformat/version.h +++ b/libavformat/version.h @@ -32,8 +32,8 @@ // Major bumping may affect Ticket5467, 5421, 5451(compatibility with Chromium) // Also please add any ticket numbers that you believe might be affected here #define LIBAVFORMAT_VERSION_MAJOR 58 -#define LIBAVFORMAT_VERSION_MINOR 18 -#define LIBAVFORMAT_VERSION_MICRO 104 +#define LIBAVFORMAT_VERSION_MINOR 19 +#define LIBAVFORMAT_VERSION_MICRO 100 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \ LIBAVFORMAT_VERSION_MINOR, \ |