yading@11: /* yading@11: * R3D REDCODE demuxer yading@11: * Copyright (c) 2008 Baptiste Coudurier yading@11: * yading@11: * This file is part of FFmpeg. yading@11: * yading@11: * FFmpeg is free software; you can redistribute it and/or yading@11: * modify it under the terms of the GNU Lesser General Public yading@11: * License as published by the Free Software Foundation; either yading@11: * version 2.1 of the License, or (at your option) any later version. yading@11: * yading@11: * FFmpeg is distributed in the hope that it will be useful, yading@11: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@11: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@11: * Lesser General Public License for more details. yading@11: * yading@11: * You should have received a copy of the GNU Lesser General Public yading@11: * License along with FFmpeg; if not, write to the Free Software yading@11: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@11: */ yading@11: yading@11: //#define DEBUG yading@11: yading@11: #include "libavutil/intreadwrite.h" yading@11: #include "libavutil/dict.h" yading@11: #include "libavutil/mathematics.h" yading@11: #include "avformat.h" yading@11: #include "internal.h" yading@11: yading@11: typedef struct { yading@11: unsigned video_offsets_count; yading@11: unsigned *video_offsets; yading@11: unsigned rdvo_offset; yading@11: } R3DContext; yading@11: yading@11: typedef struct { yading@11: unsigned size; yading@11: uint32_t tag; yading@11: uint64_t offset; yading@11: } Atom; yading@11: yading@11: static int read_atom(AVFormatContext *s, Atom *atom) yading@11: { yading@11: atom->offset = avio_tell(s->pb); yading@11: atom->size = avio_rb32(s->pb); yading@11: if (atom->size < 8) yading@11: return -1; yading@11: atom->tag = avio_rl32(s->pb); yading@11: av_dlog(s, "atom %u %.4s offset %#"PRIx64"\n", yading@11: atom->size, (char*)&atom->tag, atom->offset); yading@11: return atom->size; yading@11: } yading@11: yading@11: static int r3d_read_red1(AVFormatContext *s) yading@11: { yading@11: AVStream *st = avformat_new_stream(s, NULL); yading@11: char filename[258]; yading@11: int tmp; yading@11: int av_unused tmp2; yading@11: AVRational framerate; yading@11: yading@11: if (!st) yading@11: return AVERROR(ENOMEM); yading@11: st->codec->codec_type = AVMEDIA_TYPE_VIDEO; yading@11: st->codec->codec_id = AV_CODEC_ID_JPEG2000; yading@11: yading@11: tmp = avio_r8(s->pb); // major version yading@11: tmp2 = avio_r8(s->pb); // minor version yading@11: av_dlog(s, "version %d.%d\n", tmp, tmp2); yading@11: yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown1 %d\n", tmp); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: avpriv_set_pts_info(st, 32, 1, tmp); yading@11: yading@11: tmp = avio_rb32(s->pb); // filenum yading@11: av_dlog(s, "filenum %d\n", tmp); yading@11: yading@11: avio_skip(s->pb, 32); // unknown yading@11: yading@11: st->codec->width = avio_rb32(s->pb); yading@11: st->codec->height = avio_rb32(s->pb); yading@11: yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown2 %d\n", tmp); yading@11: yading@11: framerate.num = avio_rb16(s->pb); yading@11: framerate.den = avio_rb16(s->pb); yading@11: if (framerate.num && framerate.den) { yading@11: #if FF_API_R_FRAME_RATE yading@11: st->r_frame_rate = yading@11: #endif yading@11: st->avg_frame_rate = framerate; yading@11: } yading@11: yading@11: tmp = avio_r8(s->pb); // audio channels yading@11: av_dlog(s, "audio channels %d\n", tmp); yading@11: if (tmp > 0) { yading@11: AVStream *ast = avformat_new_stream(s, NULL); yading@11: if (!ast) yading@11: return AVERROR(ENOMEM); yading@11: ast->codec->codec_type = AVMEDIA_TYPE_AUDIO; yading@11: ast->codec->codec_id = AV_CODEC_ID_PCM_S32BE; yading@11: ast->codec->channels = tmp; yading@11: avpriv_set_pts_info(ast, 32, 1, st->time_base.den); yading@11: } yading@11: yading@11: avio_read(s->pb, filename, 257); yading@11: filename[sizeof(filename)-1] = 0; yading@11: av_dict_set(&st->metadata, "filename", filename, 0); yading@11: yading@11: av_dlog(s, "filename %s\n", filename); yading@11: av_dlog(s, "resolution %dx%d\n", st->codec->width, st->codec->height); yading@11: av_dlog(s, "timescale %d\n", st->time_base.den); yading@11: av_dlog(s, "frame rate %d/%d\n", yading@11: framerate.num, framerate.den); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_read_rdvo(AVFormatContext *s, Atom *atom) yading@11: { yading@11: R3DContext *r3d = s->priv_data; yading@11: AVStream *st = s->streams[0]; yading@11: int i; yading@11: yading@11: r3d->video_offsets_count = (atom->size - 8) / 4; yading@11: r3d->video_offsets = av_malloc(atom->size); yading@11: if (!r3d->video_offsets) yading@11: return AVERROR(ENOMEM); yading@11: yading@11: for (i = 0; i < r3d->video_offsets_count; i++) { yading@11: r3d->video_offsets[i] = avio_rb32(s->pb); yading@11: if (!r3d->video_offsets[i]) { yading@11: r3d->video_offsets_count = i; yading@11: break; yading@11: } yading@11: av_dlog(s, "video offset %d: %#x\n", i, r3d->video_offsets[i]); yading@11: } yading@11: yading@11: if (st->avg_frame_rate.num) yading@11: st->duration = av_rescale_q(r3d->video_offsets_count, yading@11: av_inv_q(st->avg_frame_rate), yading@11: st->time_base); yading@11: av_dlog(s, "duration %"PRId64"\n", st->duration); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static void r3d_read_reos(AVFormatContext *s) yading@11: { yading@11: R3DContext *r3d = s->priv_data; yading@11: int av_unused tmp; yading@11: yading@11: r3d->rdvo_offset = avio_rb32(s->pb); yading@11: avio_rb32(s->pb); // rdvs offset yading@11: avio_rb32(s->pb); // rdao offset yading@11: avio_rb32(s->pb); // rdas offset yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "num video chunks %d\n", tmp); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "num audio chunks %d\n", tmp); yading@11: yading@11: avio_skip(s->pb, 6*4); yading@11: } yading@11: yading@11: static int r3d_read_header(AVFormatContext *s) yading@11: { yading@11: R3DContext *r3d = s->priv_data; yading@11: Atom atom; yading@11: int ret; yading@11: yading@11: if (read_atom(s, &atom) < 0) { yading@11: av_log(s, AV_LOG_ERROR, "error reading atom\n"); yading@11: return -1; yading@11: } yading@11: if (atom.tag == MKTAG('R','E','D','1')) { yading@11: if ((ret = r3d_read_red1(s)) < 0) { yading@11: av_log(s, AV_LOG_ERROR, "error parsing 'red1' atom\n"); yading@11: return ret; yading@11: } yading@11: } else { yading@11: av_log(s, AV_LOG_ERROR, "could not find 'red1' atom\n"); yading@11: return -1; yading@11: } yading@11: yading@11: s->data_offset = avio_tell(s->pb); yading@11: av_dlog(s, "data offset %#"PRIx64"\n", s->data_offset); yading@11: if (!s->pb->seekable) yading@11: return 0; yading@11: // find REOB/REOF/REOS to load index yading@11: avio_seek(s->pb, avio_size(s->pb)-48-8, SEEK_SET); yading@11: if (read_atom(s, &atom) < 0) yading@11: av_log(s, AV_LOG_ERROR, "error reading end atom\n"); yading@11: yading@11: if (atom.tag != MKTAG('R','E','O','B') && yading@11: atom.tag != MKTAG('R','E','O','F') && yading@11: atom.tag != MKTAG('R','E','O','S')) yading@11: goto out; yading@11: yading@11: r3d_read_reos(s); yading@11: yading@11: if (r3d->rdvo_offset) { yading@11: avio_seek(s->pb, r3d->rdvo_offset, SEEK_SET); yading@11: if (read_atom(s, &atom) < 0) yading@11: av_log(s, AV_LOG_ERROR, "error reading 'rdvo' atom\n"); yading@11: if (atom.tag == MKTAG('R','D','V','O')) { yading@11: if (r3d_read_rdvo(s, &atom) < 0) yading@11: av_log(s, AV_LOG_ERROR, "error parsing 'rdvo' atom\n"); yading@11: } yading@11: } yading@11: yading@11: out: yading@11: avio_seek(s->pb, s->data_offset, SEEK_SET); yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_read_redv(AVFormatContext *s, AVPacket *pkt, Atom *atom) yading@11: { yading@11: AVStream *st = s->streams[0]; yading@11: int tmp; yading@11: int av_unused tmp2; yading@11: uint64_t pos = avio_tell(s->pb); yading@11: unsigned dts; yading@11: int ret; yading@11: yading@11: dts = avio_rb32(s->pb); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "frame num %d\n", tmp); yading@11: yading@11: tmp = avio_r8(s->pb); // major version yading@11: tmp2 = avio_r8(s->pb); // minor version yading@11: av_dlog(s, "version %d.%d\n", tmp, tmp2); yading@11: yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown %d\n", tmp); yading@11: yading@11: if (tmp > 4) { yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown %d\n", tmp); yading@11: yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown %d\n", tmp); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "width %d\n", tmp); yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "height %d\n", tmp); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "metadata len %d\n", tmp); yading@11: } yading@11: tmp = atom->size - 8 - (avio_tell(s->pb) - pos); yading@11: if (tmp < 0) yading@11: return -1; yading@11: ret = av_get_packet(s->pb, pkt, tmp); yading@11: if (ret < 0) { yading@11: av_log(s, AV_LOG_ERROR, "error reading video packet\n"); yading@11: return -1; yading@11: } yading@11: yading@11: pkt->stream_index = 0; yading@11: pkt->dts = dts; yading@11: if (st->avg_frame_rate.num) yading@11: pkt->duration = (uint64_t)st->time_base.den* yading@11: st->avg_frame_rate.den/st->avg_frame_rate.num; yading@11: av_dlog(s, "pkt dts %"PRId64" duration %d\n", pkt->dts, pkt->duration); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom) yading@11: { yading@11: AVStream *st = s->streams[1]; yading@11: int av_unused tmp, tmp2; yading@11: int samples, size; yading@11: uint64_t pos = avio_tell(s->pb); yading@11: unsigned dts; yading@11: int ret; yading@11: yading@11: dts = avio_rb32(s->pb); yading@11: yading@11: st->codec->sample_rate = avio_rb32(s->pb); yading@11: if (st->codec->sample_rate < 0) { yading@11: av_log(s, AV_LOG_ERROR, "negative sample rate\n"); yading@11: return AVERROR_INVALIDDATA; yading@11: } yading@11: yading@11: samples = avio_rb32(s->pb); yading@11: yading@11: tmp = avio_rb32(s->pb); yading@11: av_dlog(s, "packet num %d\n", tmp); yading@11: yading@11: tmp = avio_rb16(s->pb); // unknown yading@11: av_dlog(s, "unknown %d\n", tmp); yading@11: yading@11: tmp = avio_r8(s->pb); // major version yading@11: tmp2 = avio_r8(s->pb); // minor version yading@11: av_dlog(s, "version %d.%d\n", tmp, tmp2); yading@11: yading@11: tmp = avio_rb32(s->pb); // unknown yading@11: av_dlog(s, "unknown %d\n", tmp); yading@11: yading@11: size = atom->size - 8 - (avio_tell(s->pb) - pos); yading@11: if (size < 0) yading@11: return -1; yading@11: ret = av_get_packet(s->pb, pkt, size); yading@11: if (ret < 0) { yading@11: av_log(s, AV_LOG_ERROR, "error reading audio packet\n"); yading@11: return ret; yading@11: } yading@11: yading@11: pkt->stream_index = 1; yading@11: pkt->dts = dts; yading@11: if (st->codec->sample_rate) yading@11: pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate); yading@11: av_dlog(s, "pkt dts %"PRId64" duration %d samples %d sample rate %d\n", yading@11: pkt->dts, pkt->duration, samples, st->codec->sample_rate); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_read_packet(AVFormatContext *s, AVPacket *pkt) yading@11: { yading@11: Atom atom; yading@11: int err = 0; yading@11: yading@11: while (!err) { yading@11: if (read_atom(s, &atom) < 0) { yading@11: err = -1; yading@11: break; yading@11: } yading@11: switch (atom.tag) { yading@11: case MKTAG('R','E','D','V'): yading@11: if (s->streams[0]->discard == AVDISCARD_ALL) yading@11: goto skip; yading@11: if (!(err = r3d_read_redv(s, pkt, &atom))) yading@11: return 0; yading@11: break; yading@11: case MKTAG('R','E','D','A'): yading@11: if (s->nb_streams < 2) yading@11: return -1; yading@11: if (s->streams[1]->discard == AVDISCARD_ALL) yading@11: goto skip; yading@11: if (!(err = r3d_read_reda(s, pkt, &atom))) yading@11: return 0; yading@11: break; yading@11: default: yading@11: skip: yading@11: avio_skip(s->pb, atom.size-8); yading@11: } yading@11: } yading@11: return err; yading@11: } yading@11: yading@11: static int r3d_probe(AVProbeData *p) yading@11: { yading@11: if (AV_RL32(p->buf + 4) == MKTAG('R','E','D','1')) yading@11: return AVPROBE_SCORE_MAX; yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags) yading@11: { yading@11: AVStream *st = s->streams[0]; // video stream yading@11: R3DContext *r3d = s->priv_data; yading@11: int frame_num; yading@11: yading@11: if (!st->avg_frame_rate.num) yading@11: return -1; yading@11: yading@11: frame_num = av_rescale_q(sample_time, st->time_base, yading@11: av_inv_q(st->avg_frame_rate)); yading@11: av_dlog(s, "seek frame num %d timestamp %"PRId64"\n", yading@11: frame_num, sample_time); yading@11: yading@11: if (frame_num < r3d->video_offsets_count) { yading@11: if (avio_seek(s->pb, r3d->video_offsets_count, SEEK_SET) < 0) yading@11: return -1; yading@11: } else { yading@11: av_log(s, AV_LOG_ERROR, "could not seek to frame %d\n", frame_num); yading@11: return -1; yading@11: } yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: static int r3d_close(AVFormatContext *s) yading@11: { yading@11: R3DContext *r3d = s->priv_data; yading@11: yading@11: av_freep(&r3d->video_offsets); yading@11: yading@11: return 0; yading@11: } yading@11: yading@11: AVInputFormat ff_r3d_demuxer = { yading@11: .name = "r3d", yading@11: .long_name = NULL_IF_CONFIG_SMALL("REDCODE R3D"), yading@11: .priv_data_size = sizeof(R3DContext), yading@11: .read_probe = r3d_probe, yading@11: .read_header = r3d_read_header, yading@11: .read_packet = r3d_read_packet, yading@11: .read_close = r3d_close, yading@11: .read_seek = r3d_seek, yading@11: };