/* * "Real" compatible demuxer. * Copyright (c) 2000, 2001 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 */ #include <inttypes.h> #include "libavutil/avassert.h" #include "libavutil/avstring.h" #include "libavutil/channel_layout.h" #include "libavutil/internal.h" #include "libavutil/intreadwrite.h" #include "libavutil/dict.h" #include "avformat.h" #include "avio_internal.h" #include "internal.h" #include "rmsipr.h" #include "rm.h" #define DEINT_ID_GENR MKTAG('g', 'e', 'n', 'r') ///< interleaving for Cooker/ATRAC #define DEINT_ID_INT0 MKTAG('I', 'n', 't', '0') ///< no interleaving needed #define DEINT_ID_INT4 MKTAG('I', 'n', 't', '4') ///< interleaving for 28.8 #define DEINT_ID_SIPR MKTAG('s', 'i', 'p', 'r') ///< interleaving for Sipro #define DEINT_ID_VBRF MKTAG('v', 'b', 'r', 'f') ///< VBR case for AAC #define DEINT_ID_VBRS MKTAG('v', 'b', 'r', 's') ///< VBR case for AAC struct RMStream { AVPacket pkt; ///< place to store merged video frame / reordered audio data int videobufsize; ///< current assembled frame size int videobufpos; ///< position for the next slice in the video buffer int curpic_num; ///< picture number of current frame int cur_slice, slices; int64_t pktpos; ///< first slice position in file /// Audio descrambling matrix parameters int64_t audiotimestamp; ///< Audio packet timestamp int sub_packet_cnt; // Subpacket counter, used while reading int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container int audio_framesize; /// Audio frame size from container int sub_packet_lengths[16]; /// Length of each subpacket int32_t deint_id; ///< deinterleaver used in audio stream }; typedef struct RMDemuxContext { int nb_packets; int old_format; int current_stream; int remaining_len; int audio_stream_num; ///< Stream number for audio packets int audio_pkt_cnt; ///< Output packet counter int data_end; } RMDemuxContext; static int rm_read_close(AVFormatContext *s); static inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len) { int i; char *q, r; q = buf; for(i=0;i<len;i++) { r = avio_r8(pb); if (i < buf_size - 1) *q++ = r; } if (buf_size > 0) *q = '\0'; } static void get_str8(AVIOContext *pb, char *buf, int buf_size) { get_strl(pb, buf, buf_size, avio_r8(pb)); } static int rm_read_extradata(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, unsigned size) { if (size >= 1<<24) { av_log(s, AV_LOG_ERROR, "extradata size %u too large\n", size); return -1; } if (ff_get_extradata(s, par, pb, size) < 0) return AVERROR(ENOMEM); return 0; } static void rm_read_metadata(AVFormatContext *s, AVIOContext *pb, int wide) { char buf[1024]; int i; for (i=0; i<FF_ARRAY_ELEMS(ff_rm_metadata); i++) { int len = wide ? avio_rb16(pb) : avio_r8(pb); get_strl(pb, buf, sizeof(buf), len); av_dict_set(&s->metadata, ff_rm_metadata[i], buf, 0); } } RMStream *ff_rm_alloc_rmstream (void) { RMStream *rms = av_mallocz(sizeof(RMStream)); if (!rms) return NULL; rms->curpic_num = -1; return rms; } void ff_rm_free_rmstream (RMStream *rms) { av_packet_unref(&rms->pkt); } static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int read_all) { char buf[256]; uint32_t version; int ret; /* ra type header */ version = avio_rb16(pb); /* version */ if (version == 3) { unsigned bytes_per_minute; int header_size = avio_rb16(pb); int64_t startpos = avio_tell(pb); avio_skip(pb, 8); bytes_per_minute = avio_rb16(pb); avio_skip(pb, 4); rm_read_metadata(s, pb, 0); if ((startpos + header_size) >= avio_tell(pb) + 2) { // fourcc (should always be "lpcJ") avio_r8(pb); get_str8(pb, buf, sizeof(buf)); } // Skip extra header crap (this should never happen) if ((startpos + header_size) > avio_tell(pb)) avio_skip(pb, header_size + startpos - avio_tell(pb)); if (bytes_per_minute) st->codecpar->bit_rate = 8LL * bytes_per_minute / 60; st->codecpar->sample_rate = 8000; st->codecpar->channels = 1; st->codecpar->channel_layout = AV_CH_LAYOUT_MONO; st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->codec_id = AV_CODEC_ID_RA_144; ast->deint_id = DEINT_ID_INT0; } else { int flavor, sub_packet_h, coded_framesize, sub_packet_size; int codecdata_length; unsigned bytes_per_minute; /* old version (4) */ avio_skip(pb, 2); /* unused */ avio_rb32(pb); /* .ra4 */ avio_rb32(pb); /* data size */ avio_rb16(pb); /* version2 */ avio_rb32(pb); /* header size */ flavor= avio_rb16(pb); /* add codec info / flavor */ ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */ avio_rb32(pb); /* ??? */ bytes_per_minute = avio_rb32(pb); if (version == 4) { if (bytes_per_minute) st->codecpar->bit_rate = 8LL * bytes_per_minute / 60; } avio_rb32(pb); /* ??? */ ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */ st->codecpar->block_align= avio_rb16(pb); /* frame size */ ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */ avio_rb16(pb); /* ??? */ if (version == 5) { avio_rb16(pb); avio_rb16(pb); avio_rb16(pb); } st->codecpar->sample_rate = avio_rb16(pb); avio_rb32(pb); st->codecpar->channels = avio_rb16(pb); if (version == 5) { ast->deint_id = avio_rl32(pb); avio_read(pb, buf, 4); buf[4] = 0; } else { AV_WL32(buf, 0); get_str8(pb, buf, sizeof(buf)); /* desc */ ast->deint_id = AV_RL32(buf); get_str8(pb, buf, sizeof(buf)); /* desc */ } st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->codec_tag = AV_RL32(buf); st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags, st->codecpar->codec_tag); switch (st->codecpar->codec_id) { case AV_CODEC_ID_AC3: st->need_parsing = AVSTREAM_PARSE_FULL; break; case AV_CODEC_ID_RA_288: st->codecpar->extradata_size= 0; av_freep(&st->codecpar->extradata); ast->audio_framesize = st->codecpar->block_align; st->codecpar->block_align = coded_framesize; break; case AV_CODEC_ID_COOK: st->need_parsing = AVSTREAM_PARSE_HEADERS; case AV_CODEC_ID_ATRAC3: case AV_CODEC_ID_SIPR: if (read_all) { codecdata_length = 0; } else { avio_rb16(pb); avio_r8(pb); if (version == 5) avio_r8(pb); codecdata_length = avio_rb32(pb); if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){ av_log(s, AV_LOG_ERROR, "codecdata_length too large\n"); return -1; } } ast->audio_framesize = st->codecpar->block_align; if (st->codecpar->codec_id == AV_CODEC_ID_SIPR) { if (flavor > 3) { av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n", flavor); return -1; } st->codecpar->block_align = ff_sipr_subpk_size[flavor]; st->need_parsing = AVSTREAM_PARSE_FULL_RAW; } else { if(sub_packet_size <= 0){ av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n"); return -1; } st->codecpar->block_align = ast->sub_packet_size; } if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length)) < 0) return ret; break; case AV_CODEC_ID_AAC: avio_rb16(pb); avio_r8(pb); if (version == 5) avio_r8(pb); codecdata_length = avio_rb32(pb); if(codecdata_length + AV_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){ av_log(s, AV_LOG_ERROR, "codecdata_length too large\n"); return -1; } if (codecdata_length >= 1) { avio_r8(pb); if ((ret = rm_read_extradata(s, pb, st->codecpar, codecdata_length - 1)) < 0) return ret; } break; } switch (ast->deint_id) { case DEINT_ID_INT4: if (ast->coded_framesize > ast->audio_framesize || sub_packet_h <= 1 || ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize) return AVERROR_INVALIDDATA; if (ast->coded_framesize * sub_packet_h != 2*ast->audio_framesize) { avpriv_request_sample(s, "mismatching interleaver parameters"); return AVERROR_INVALIDDATA; } break; case DEINT_ID_GENR: if (ast->sub_packet_size <= 0 || ast->sub_packet_size > ast->audio_framesize) return AVERROR_INVALIDDATA; if (ast->audio_framesize % ast->sub_packet_size) return AVERROR_INVALIDDATA; break; case DEINT_ID_SIPR: case DEINT_ID_INT0: case DEINT_ID_VBRS: case DEINT_ID_VBRF: break; default: av_log(s, AV_LOG_ERROR ,"Unknown interleaver %"PRIX32"\n", ast->deint_id); return AVERROR_INVALIDDATA; } if (ast->deint_id == DEINT_ID_INT4 || ast->deint_id == DEINT_ID_GENR || ast->deint_id == DEINT_ID_SIPR) { if (st->codecpar->block_align <= 0 || ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX || ast->audio_framesize * sub_packet_h < st->codecpar->block_align) return AVERROR_INVALIDDATA; if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0) return AVERROR(ENOMEM); } if (read_all) { avio_r8(pb); avio_r8(pb); avio_r8(pb); rm_read_metadata(s, pb, 0); } } return 0; } int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *rst, unsigned int codec_data_size, const uint8_t *mime) { unsigned int v; int size; int64_t codec_pos; int ret; if (codec_data_size > INT_MAX) return AVERROR_INVALIDDATA; if (codec_data_size == 0) return 0; avpriv_set_pts_info(st, 64, 1, 1000); codec_pos = avio_tell(pb); v = avio_rb32(pb); if (v == MKTAG(0xfd, 'a', 'r', '.')) { /* ra type header */ if (rm_read_audio_stream_info(s, pb, st, rst, 0)) return -1; } else if (v == MKBETAG('L', 'S', 'D', ':')) { avio_seek(pb, -4, SEEK_CUR); if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size)) < 0) return ret; st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; st->codecpar->codec_tag = AV_RL32(st->codecpar->extradata); st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags, st->codecpar->codec_tag); } else if(mime && !strcmp(mime, "logical-fileinfo")){ int stream_count, rule_count, property_count, i; ff_free_stream(s, st); if (avio_rb16(pb) != 0) { av_log(s, AV_LOG_WARNING, "Unsupported version\n"); goto skip; } stream_count = avio_rb16(pb); avio_skip(pb, 6*stream_count); rule_count = avio_rb16(pb); avio_skip(pb, 2*rule_count); property_count = avio_rb16(pb); for(i=0; i<property_count; i++){ uint8_t name[128], val[128]; avio_rb32(pb); if (avio_rb16(pb) != 0) { av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n"); goto skip; //FIXME skip just this one } get_str8(pb, name, sizeof(name)); switch(avio_rb32(pb)) { case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb)); av_dict_set(&s->metadata, name, val, 0); break; default: avio_skip(pb, avio_rb16(pb)); } } } else { int fps; if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) { fail1: av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v); goto skip; } st->codecpar->codec_tag = avio_rl32(pb); st->codecpar->codec_id = ff_codec_get_id(ff_rm_codec_tags, st->codecpar->codec_tag); av_log(s, AV_LOG_TRACE, "%"PRIX32" %X\n", st->codecpar->codec_tag, MKTAG('R', 'V', '2', '0')); if (st->codecpar->codec_id == AV_CODEC_ID_NONE) goto fail1; st->codecpar->width = avio_rb16(pb); st->codecpar->height = avio_rb16(pb); avio_skip(pb, 2); // looks like bits per sample avio_skip(pb, 4); // always zero? st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS; fps = avio_rb32(pb); if ((ret = rm_read_extradata(s, pb, st->codecpar, codec_data_size - (avio_tell(pb) - codec_pos))) < 0) return ret; if (fps > 0) { av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num, 0x10000, fps, (1 << 30) - 1); #if FF_API_R_FRAME_RATE st->r_frame_rate = st->avg_frame_rate; #endif } else if (s->error_recognition & AV_EF_EXPLODE) { av_log(s, AV_LOG_ERROR, "Invalid framerate\n"); return AVERROR_INVALIDDATA; } } skip: /* skip codec info */ size = avio_tell(pb) - codec_pos; if (codec_data_size >= size) { avio_skip(pb, codec_data_size - size); } else { av_log(s, AV_LOG_WARNING, "codec_data_size %u < size %d\n", codec_data_size, size); } return 0; } /** this function assumes that the demuxer has already seeked to the start * of the INDX chunk, and will bail out if not. */ static int rm_read_index(AVFormatContext *s) { AVIOContext *pb = s->pb; unsigned int size, n_pkts, str_id, next_off, n, pos, pts; AVStream *st; do { if (avio_rl32(pb) != MKTAG('I','N','D','X')) return -1; size = avio_rb32(pb); if (size < 20) return -1; avio_skip(pb, 2); n_pkts = avio_rb32(pb); str_id = avio_rb16(pb); next_off = avio_rb32(pb); for (n = 0; n < s->nb_streams; n++) if (s->streams[n]->id == str_id) { st = s->streams[n]; break; } if (n == s->nb_streams) { av_log(s, AV_LOG_ERROR, "Invalid stream index %d for index at pos %"PRId64"\n", str_id, avio_tell(pb)); goto skip; } else if ((avio_size(pb) - avio_tell(pb)) / 14 < n_pkts) { av_log(s, AV_LOG_ERROR, "Nr. of packets in packet index for stream index %d " "exceeds filesize (%"PRId64" at %"PRId64" = %"PRId64")\n", str_id, avio_size(pb), avio_tell(pb), (avio_size(pb) - avio_tell(pb)) / 14); goto skip; } for (n = 0; n < n_pkts; n++) { avio_skip(pb, 2); pts = avio_rb32(pb); pos = avio_rb32(pb); avio_skip(pb, 4); /* packet no. */ av_add_index_entry(st, pos, pts, 0, 0, AVINDEX_KEYFRAME); } skip: if (next_off && avio_tell(pb) < next_off && avio_seek(pb, next_off, SEEK_SET) < 0) { av_log(s, AV_LOG_ERROR, "Non-linear index detected, not supported\n"); return -1; } } while (next_off); return 0; } static int rm_read_header_old(AVFormatContext *s) { RMDemuxContext *rm = s->priv_data; AVStream *st; rm->old_format = 1; st = avformat_new_stream(s, NULL); if (!st) return -1; st->priv_data = ff_rm_alloc_rmstream(); if (!st->priv_data) return AVERROR(ENOMEM); return rm_read_audio_stream_info(s, s->pb, st, st->priv_data, 1); } static int rm_read_multi(AVFormatContext *s, AVIOContext *pb, AVStream *st, char *mime) { int number_of_streams = avio_rb16(pb); int number_of_mdpr; int i, ret; unsigned size2; for (i = 0; i<number_of_streams; i++) avio_rb16(pb); number_of_mdpr = avio_rb16(pb); if (number_of_mdpr != 1) { avpriv_request_sample(s, "MLTI with multiple (%d) MDPR", number_of_mdpr); } for (i = 0; i < number_of_mdpr; i++) { AVStream *st2; if (i > 0) { st2 = avformat_new_stream(s, NULL); if (!st2) { ret = AVERROR(ENOMEM); return ret; } st2->id = st->id + (i<<16); st2->codecpar->bit_rate = st->codecpar->bit_rate; st2->start_time = st->start_time; st2->duration = st->duration; st2->codecpar->codec_type = AVMEDIA_TYPE_DATA; st2->priv_data = ff_rm_alloc_rmstream(); if (!st2->priv_data) return AVERROR(ENOMEM); } else st2 = st; size2 = avio_rb32(pb); ret = ff_rm_read_mdpr_codecdata(s, s->pb, st2, st2->priv_data, size2, mime); if (ret < 0) return ret; } return 0; } static int rm_read_header(AVFormatContext *s) { RMDemuxContext *rm = s->priv_data; AVStream *st; AVIOContext *pb = s->pb; unsigned int tag; int tag_size; unsigned int start_time, duration; unsigned int data_off = 0, indx_off = 0; char buf[128], mime[128]; int flags = 0; int ret = -1; unsigned size, v; int64_t codec_pos; tag = avio_rl32(pb); if (tag == MKTAG('.', 'r', 'a', 0xfd)) { /* very old .ra format */ return rm_read_header_old(s); } else if (tag != MKTAG('.', 'R', 'M', 'F')) { return AVERROR(EIO); } tag_size = avio_rb32(pb); avio_skip(pb, tag_size - 8); for(;;) { if (avio_feof(pb)) goto fail; tag = avio_rl32(pb); tag_size = avio_rb32(pb); avio_rb16(pb); av_log(s, AV_LOG_TRACE, "tag=%s size=%d\n", av_fourcc2str(tag), tag_size); if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A')) goto fail; switch(tag) { case MKTAG('P', 'R', 'O', 'P'): /* file header */ avio_rb32(pb); /* max bit rate */ avio_rb32(pb); /* avg bit rate */ avio_rb32(pb); /* max packet size */ avio_rb32(pb); /* avg packet size */ avio_rb32(pb); /* nb packets */ duration = avio_rb32(pb); /* duration */ s->duration = av_rescale(duration, AV_TIME_BASE, 1000); avio_rb32(pb); /* preroll */ indx_off = avio_rb32(pb); /* index offset */ data_off = avio_rb32(pb); /* data offset */ avio_rb16(pb); /* nb streams */ flags = avio_rb16(pb); /* flags */ break; case MKTAG('C', 'O', 'N', 'T'): rm_read_metadata(s, pb, 1); break; case MKTAG('M', 'D', 'P', 'R'): st = avformat_new_stream(s, NULL); if (!st) { ret = AVERROR(ENOMEM); goto fail; } st->id = avio_rb16(pb); avio_rb32(pb); /* max bit rate */ st->codecpar->bit_rate = avio_rb32(pb); /* bit rate */ avio_rb32(pb); /* max packet size */ avio_rb32(pb); /* avg packet size */ start_time = avio_rb32(pb); /* start time */ avio_rb32(pb); /* preroll */ duration = avio_rb32(pb); /* duration */ st->start_time = start_time; st->duration = duration; if(duration>0) s->duration = AV_NOPTS_VALUE; get_str8(pb, buf, sizeof(buf)); /* desc */ get_str8(pb, mime, sizeof(mime)); /* mimetype */ st->codecpar->codec_type = AVMEDIA_TYPE_DATA; st->priv_data = ff_rm_alloc_rmstream(); if (!st->priv_data) return AVERROR(ENOMEM); size = avio_rb32(pb); codec_pos = avio_tell(pb); ffio_ensure_seekback(pb, 4); v = avio_rb32(pb); if (v == MKBETAG('M', 'L', 'T', 'I')) { ret = rm_read_multi(s, s->pb, st, mime); if (ret < 0) goto fail; avio_seek(pb, codec_pos + size, SEEK_SET); } else { avio_skip(pb, -4); if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data, size, mime) < 0) goto fail; } break; case MKTAG('D', 'A', 'T', 'A'): goto header_end; default: /* unknown tag: skip it */ avio_skip(pb, tag_size - 10); break; } } header_end: rm->nb_packets = avio_rb32(pb); /* number of packets */ if (!rm->nb_packets && (flags & 4)) rm->nb_packets = 3600 * 25; avio_rb32(pb); /* next data header */ if (!data_off) data_off = avio_tell(pb) - 18; if (indx_off && (pb->seekable & AVIO_SEEKABLE_NORMAL) && !(s->flags & AVFMT_FLAG_IGNIDX) && avio_seek(pb, indx_off, SEEK_SET) >= 0) { rm_read_index(s); avio_seek(pb, data_off + 18, SEEK_SET); } return 0; fail: rm_read_close(s); return ret; } static int get_num(AVIOContext *pb, int *len) { int n, n1; n = avio_rb16(pb); (*len)-=2; n &= 0x7FFF; if (n >= 0x4000) { return n - 0x4000; } else { n1 = avio_rb16(pb); (*len)-=2; return (n << 16) | n1; } } /* multiple of 20 bytes for ra144 (ugly) */ #define RAW_PACKET_SIZE 1000 static int rm_sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){ RMDemuxContext *rm = s->priv_data; AVIOContext *pb = s->pb; AVStream *st; uint32_t state=0xFFFFFFFF; while(!avio_feof(pb)){ int len, num, i; int mlti_id; *pos= avio_tell(pb) - 3; if(rm->remaining_len > 0){ num= rm->current_stream; mlti_id = 0; len= rm->remaining_len; *timestamp = AV_NOPTS_VALUE; *flags= 0; }else{ state= (state<<8) + avio_r8(pb); if(state == MKBETAG('I', 'N', 'D', 'X')){ int n_pkts, expected_len; len = avio_rb32(pb); avio_skip(pb, 2); n_pkts = avio_rb32(pb); expected_len = 20 + n_pkts * 14; if (len == 20) /* some files don't add index entries to chunk size... */ len = expected_len; else if (len != expected_len) av_log(s, AV_LOG_WARNING, "Index size %d (%d pkts) is wrong, should be %d.\n", len, n_pkts, expected_len); len -= 14; // we already read part of the index header if(len<0) continue; goto skip; } else if (state == MKBETAG('D','A','T','A')) { av_log(s, AV_LOG_WARNING, "DATA tag in middle of chunk, file may be broken.\n"); } if(state > (unsigned)0xFFFF || state <= 12) continue; len=state - 12; state= 0xFFFFFFFF; num = avio_rb16(pb); *timestamp = avio_rb32(pb); mlti_id = (avio_r8(pb)>>1)-1<<16; mlti_id = FFMAX(mlti_id, 0); *flags = avio_r8(pb); /* flags */ } for(i=0;i<s->nb_streams;i++) { st = s->streams[i]; if (mlti_id + num == st->id) break; } if (i == s->nb_streams) { skip: /* skip packet if unknown number */ avio_skip(pb, len); rm->remaining_len = 0; continue; } *stream_index= i; return len; } return -1; } static int rm_assemble_video_frame(AVFormatContext *s, AVIOContext *pb, RMDemuxContext *rm, RMStream *vst, AVPacket *pkt, int len, int *pseq, int64_t *timestamp) { int hdr; int seq = 0, pic_num = 0, len2 = 0, pos = 0; //init to silence compiler warning int type; int ret; hdr = avio_r8(pb); len--; type = hdr >> 6; if(type != 3){ // not frame as a part of packet seq = avio_r8(pb); len--; } if(type != 1){ // not whole frame len2 = get_num(pb, &len); pos = get_num(pb, &len); pic_num = avio_r8(pb); len--; } if(len<0) { av_log(s, AV_LOG_ERROR, "Insufficient data\n"); return -1; } rm->remaining_len = len; if(type&1){ // frame, not slice if(type == 3){ // frame as a part of packet len= len2; *timestamp = pos; } if(rm->remaining_len < len) { av_log(s, AV_LOG_ERROR, "Insufficient remaining len\n"); return -1; } rm->remaining_len -= len; if(av_new_packet(pkt, len + 9) < 0) return AVERROR(EIO); pkt->data[0] = 0; AV_WL32(pkt->data + 1, 1); AV_WL32(pkt->data + 5, 0); if ((ret = avio_read(pb, pkt->data + 9, len)) != len) { av_packet_unref(pkt); av_log(s, AV_LOG_ERROR, "Failed to read %d bytes\n", len); return ret < 0 ? ret : AVERROR(EIO); } return 0; } //now we have to deal with single slice *pseq = seq; if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){ if (len2 > ffio_limit(pb, len2)) { av_log(s, AV_LOG_ERROR, "Impossibly sized packet\n"); return AVERROR_INVALIDDATA; } vst->slices = ((hdr & 0x3F) << 1) + 1; vst->videobufsize = len2 + 8*vst->slices + 1; av_packet_unref(&vst->pkt); //FIXME this should be output. if(av_new_packet(&vst->pkt, vst->videobufsize) < 0) return AVERROR(ENOMEM); memset(vst->pkt.data, 0, vst->pkt.size); vst->videobufpos = 8*vst->slices + 1; vst->cur_slice = 0; vst->curpic_num = pic_num; vst->pktpos = avio_tell(pb); } if(type == 2) len = FFMIN(len, pos); if(++vst->cur_slice > vst->slices) { av_log(s, AV_LOG_ERROR, "cur slice %d, too large\n", vst->cur_slice); return 1; } if(!vst->pkt.data) return AVERROR(ENOMEM); AV_WL32(vst->pkt.data - 7 + 8*vst->cur_slice, 1); AV_WL32(vst->pkt.data - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1); if(vst->videobufpos + len > vst->videobufsize) { av_log(s, AV_LOG_ERROR, "outside videobufsize\n"); return 1; } if (avio_read(pb, vst->pkt.data + vst->videobufpos, len) != len) return AVERROR(EIO); vst->videobufpos += len; rm->remaining_len-= len; if (type == 2 || vst->videobufpos == vst->videobufsize) { vst->pkt.data[0] = vst->cur_slice-1; *pkt= vst->pkt; vst->pkt.data= NULL; vst->pkt.size= 0; vst->pkt.buf = NULL; if(vst->slices != vst->cur_slice) //FIXME find out how to set slices correct from the begin memmove(pkt->data + 1 + 8*vst->cur_slice, pkt->data + 1 + 8*vst->slices, vst->videobufpos - 1 - 8*vst->slices); pkt->size = vst->videobufpos + 8*(vst->cur_slice - vst->slices); pkt->pts = AV_NOPTS_VALUE; pkt->pos = vst->pktpos; vst->slices = 0; return 0; } return 1; } static inline void rm_ac3_swap_bytes (AVStream *st, AVPacket *pkt) { uint8_t *ptr; int j; if (st->codecpar->codec_id == AV_CODEC_ID_AC3) { ptr = pkt->data; for (j=0;j<pkt->size;j+=2) { FFSWAP(int, ptr[0], ptr[1]); ptr += 2; } } } static int readfull(AVFormatContext *s, AVIOContext *pb, uint8_t *dst, int n) { int ret = avio_read(pb, dst, n); if (ret != n) { if (ret >= 0) memset(dst + ret, 0, n - ret); else memset(dst , 0, n); av_log(s, AV_LOG_ERROR, "Failed to fully read block\n"); } return ret; } int ff_rm_parse_packet (AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, int len, AVPacket *pkt, int *seq, int flags, int64_t timestamp) { RMDemuxContext *rm = s->priv_data; int ret; if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { rm->current_stream= st->id; ret = rm_assemble_video_frame(s, pb, rm, ast, pkt, len, seq, ×tamp); if(ret) return ret < 0 ? ret : -1; //got partial frame or error } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { if ((ast->deint_id == DEINT_ID_GENR) || (ast->deint_id == DEINT_ID_INT4) || (ast->deint_id == DEINT_ID_SIPR)) { int x; int sps = ast->sub_packet_size; int cfs = ast->coded_framesize; int h = ast->sub_packet_h; int y = ast->sub_packet_cnt; int w = ast->audio_framesize; if (flags & 2) y = ast->sub_packet_cnt = 0; if (!y) ast->audiotimestamp = timestamp; switch (ast->deint_id) { case DEINT_ID_INT4: for (x = 0; x < h/2; x++) readfull(s, pb, ast->pkt.data+x*2*w+y*cfs, cfs); break; case DEINT_ID_GENR: for (x = 0; x < w/sps; x++) readfull(s, pb, ast->pkt.data+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps); break; case DEINT_ID_SIPR: readfull(s, pb, ast->pkt.data + y * w, w); break; } if (++(ast->sub_packet_cnt) < h) return -1; if (ast->deint_id == DEINT_ID_SIPR) ff_rm_reorder_sipr_data(ast->pkt.data, h, w); ast->sub_packet_cnt = 0; rm->audio_stream_num = st->index; if (st->codecpar->block_align <= 0) { av_log(s, AV_LOG_ERROR, "Invalid block alignment %d\n", st->codecpar->block_align); return AVERROR_INVALIDDATA; } rm->audio_pkt_cnt = h * w / st->codecpar->block_align; } else if ((ast->deint_id == DEINT_ID_VBRF) || (ast->deint_id == DEINT_ID_VBRS)) { int x; rm->audio_stream_num = st->index; ast->sub_packet_cnt = (avio_rb16(pb) & 0xf0) >> 4; if (ast->sub_packet_cnt) { for (x = 0; x < ast->sub_packet_cnt; x++) ast->sub_packet_lengths[x] = avio_rb16(pb); rm->audio_pkt_cnt = ast->sub_packet_cnt; ast->audiotimestamp = timestamp; } else return -1; } else { ret = av_get_packet(pb, pkt, len); if (ret < 0) return ret; rm_ac3_swap_bytes(st, pkt); } } else { ret = av_get_packet(pb, pkt, len); if (ret < 0) return ret; } pkt->stream_index = st->index; pkt->pts = timestamp; if (flags & 2) pkt->flags |= AV_PKT_FLAG_KEY; return st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ? rm->audio_pkt_cnt : 0; } int ff_rm_retrieve_cache (AVFormatContext *s, AVIOContext *pb, AVStream *st, RMStream *ast, AVPacket *pkt) { RMDemuxContext *rm = s->priv_data; int ret; av_assert0 (rm->audio_pkt_cnt > 0); if (ast->deint_id == DEINT_ID_VBRF || ast->deint_id == DEINT_ID_VBRS) { ret = av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]); if (ret < 0) return ret; } else { ret = av_new_packet(pkt, st->codecpar->block_align); if (ret < 0) return ret; memcpy(pkt->data, ast->pkt.data + st->codecpar->block_align * //FIXME avoid this (ast->sub_packet_h * ast->audio_framesize / st->codecpar->block_align - rm->audio_pkt_cnt), st->codecpar->block_align); } rm->audio_pkt_cnt--; if ((pkt->pts = ast->audiotimestamp) != AV_NOPTS_VALUE) { ast->audiotimestamp = AV_NOPTS_VALUE; pkt->flags = AV_PKT_FLAG_KEY; } else pkt->flags = 0; pkt->stream_index = st->index; return rm->audio_pkt_cnt; } static int rm_read_packet(AVFormatContext *s, AVPacket *pkt) { RMDemuxContext *rm = s->priv_data; AVStream *st = NULL; // init to silence compiler warning int i, len, res, seq = 1; int64_t timestamp, pos; int flags; for (;;) { if (rm->audio_pkt_cnt) { // If there are queued audio packet return them first st = s->streams[rm->audio_stream_num]; res = ff_rm_retrieve_cache(s, s->pb, st, st->priv_data, pkt); if(res < 0) return res; flags = 0; } else { if (rm->old_format) { RMStream *ast; st = s->streams[0]; ast = st->priv_data; timestamp = AV_NOPTS_VALUE; len = !ast->audio_framesize ? RAW_PACKET_SIZE : ast->coded_framesize * ast->sub_packet_h / 2; flags = (seq++ == 1) ? 2 : 0; pos = avio_tell(s->pb); } else { len = rm_sync(s, ×tamp, &flags, &i, &pos); if (len > 0) st = s->streams[i]; } if (avio_feof(s->pb)) return AVERROR_EOF; if (len <= 0) return AVERROR(EIO); res = ff_rm_parse_packet (s, s->pb, st, st->priv_data, len, pkt, &seq, flags, timestamp); if (res < -1) return res; if((flags&2) && (seq&0x7F) == 1) av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME); if (res) continue; } if( (st->discard >= AVDISCARD_NONKEY && !(flags&2)) || st->discard >= AVDISCARD_ALL){ av_packet_unref(pkt); } else break; } return 0; } static int rm_read_close(AVFormatContext *s) { int i; for (i=0;i<s->nb_streams;i++) ff_rm_free_rmstream(s->streams[i]->priv_data); return 0; } static int rm_probe(AVProbeData *p) { /* check file header */ if ((p->buf[0] == '.' && p->buf[1] == 'R' && p->buf[2] == 'M' && p->buf[3] == 'F' && p->buf[4] == 0 && p->buf[5] == 0) || (p->buf[0] == '.' && p->buf[1] == 'r' && p->buf[2] == 'a' && p->buf[3] == 0xfd)) return AVPROBE_SCORE_MAX; else return 0; } static int64_t rm_read_dts(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit) { RMDemuxContext *rm = s->priv_data; int64_t pos, dts; int stream_index2, flags, len, h; pos = *ppos; if(rm->old_format) return AV_NOPTS_VALUE; if (avio_seek(s->pb, pos, SEEK_SET) < 0) return AV_NOPTS_VALUE; rm->remaining_len=0; for(;;){ int seq=1; AVStream *st; len = rm_sync(s, &dts, &flags, &stream_index2, &pos); if(len<0) return AV_NOPTS_VALUE; st = s->streams[stream_index2]; if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { h= avio_r8(s->pb); len--; if(!(h & 0x40)){ seq = avio_r8(s->pb); len--; } } if((flags&2) && (seq&0x7F) == 1){ av_log(s, AV_LOG_TRACE, "%d %d-%d %"PRId64" %d\n", flags, stream_index2, stream_index, dts, seq); av_add_index_entry(st, pos, dts, 0, 0, AVINDEX_KEYFRAME); if(stream_index2 == stream_index) break; } avio_skip(s->pb, len); } *ppos = pos; return dts; } static int rm_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags) { RMDemuxContext *rm = s->priv_data; if (ff_seek_frame_binary(s, stream_index, pts, flags) < 0) return -1; rm->audio_pkt_cnt = 0; return 0; } AVInputFormat ff_rm_demuxer = { .name = "rm", .long_name = NULL_IF_CONFIG_SMALL("RealMedia"), .priv_data_size = sizeof(RMDemuxContext), .read_probe = rm_probe, .read_header = rm_read_header, .read_packet = rm_read_packet, .read_close = rm_read_close, .read_timestamp = rm_read_dts, .read_seek = rm_read_seek, }; AVInputFormat ff_rdt_demuxer = { .name = "rdt", .long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"), .priv_data_size = sizeof(RMDemuxContext), .read_close = rm_read_close, .flags = AVFMT_NOFILE, }; static int ivr_probe(AVProbeData *p) { if (memcmp(p->buf, ".R1M\x0\x1\x1", 7) && memcmp(p->buf, ".REC", 4)) return 0; return AVPROBE_SCORE_MAX; } static int ivr_read_header(AVFormatContext *s) { unsigned tag, type, len, tlen, value; int i, j, n, count, nb_streams = 0, ret; uint8_t key[256], val[256]; AVIOContext *pb = s->pb; AVStream *st; int64_t pos, offset, temp; pos = avio_tell(pb); tag = avio_rl32(pb); if (tag == MKTAG('.','R','1','M')) { if (avio_rb16(pb) != 1) return AVERROR_INVALIDDATA; if (avio_r8(pb) != 1) return AVERROR_INVALIDDATA; len = avio_rb32(pb); avio_skip(pb, len); avio_skip(pb, 5); temp = avio_rb64(pb); while (!avio_feof(pb) && temp) { offset = temp; temp = avio_rb64(pb); } avio_skip(pb, offset - avio_tell(pb)); if (avio_r8(pb) != 1) return AVERROR_INVALIDDATA; len = avio_rb32(pb); avio_skip(pb, len); if (avio_r8(pb) != 2) return AVERROR_INVALIDDATA; avio_skip(pb, 16); pos = avio_tell(pb); tag = avio_rl32(pb); } if (tag != MKTAG('.','R','E','C')) return AVERROR_INVALIDDATA; if (avio_r8(pb) != 0) return AVERROR_INVALIDDATA; count = avio_rb32(pb); for (i = 0; i < count; i++) { if (avio_feof(pb)) return AVERROR_INVALIDDATA; type = avio_r8(pb); tlen = avio_rb32(pb); avio_get_str(pb, tlen, key, sizeof(key)); len = avio_rb32(pb); if (type == 5) { avio_get_str(pb, len, val, sizeof(val)); av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val); } else if (type == 4) { av_log(s, AV_LOG_DEBUG, "%s = '0x", key); for (j = 0; j < len; j++) { if (avio_feof(pb)) return AVERROR_INVALIDDATA; av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb)); } av_log(s, AV_LOG_DEBUG, "'\n"); } else if (len == 4 && type == 3 && !strncmp(key, "StreamCount", tlen)) { nb_streams = value = avio_rb32(pb); } else if (len == 4 && type == 3) { value = avio_rb32(pb); av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value); } else { av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key); avio_skip(pb, len); } } for (n = 0; n < nb_streams; n++) { st = avformat_new_stream(s, NULL); if (!st) return AVERROR(ENOMEM); st->priv_data = ff_rm_alloc_rmstream(); if (!st->priv_data) return AVERROR(ENOMEM); if (avio_r8(pb) != 1) return AVERROR_INVALIDDATA; count = avio_rb32(pb); for (i = 0; i < count; i++) { if (avio_feof(pb)) return AVERROR_INVALIDDATA; type = avio_r8(pb); tlen = avio_rb32(pb); avio_get_str(pb, tlen, key, sizeof(key)); len = avio_rb32(pb); if (type == 5) { avio_get_str(pb, len, val, sizeof(val)); av_log(s, AV_LOG_DEBUG, "%s = '%s'\n", key, val); } else if (type == 4 && !strncmp(key, "OpaqueData", tlen)) { ret = ffio_ensure_seekback(pb, 4); if (ret < 0) return ret; if (avio_rb32(pb) == MKBETAG('M', 'L', 'T', 'I')) { ret = rm_read_multi(s, pb, st, NULL); } else { avio_seek(pb, -4, SEEK_CUR); ret = ff_rm_read_mdpr_codecdata(s, pb, st, st->priv_data, len, NULL); } if (ret < 0) return ret; } else if (type == 4) { int j; av_log(s, AV_LOG_DEBUG, "%s = '0x", key); for (j = 0; j < len; j++) av_log(s, AV_LOG_DEBUG, "%X", avio_r8(pb)); av_log(s, AV_LOG_DEBUG, "'\n"); } else if (len == 4 && type == 3 && !strncmp(key, "Duration", tlen)) { st->duration = avio_rb32(pb); } else if (len == 4 && type == 3) { value = avio_rb32(pb); av_log(s, AV_LOG_DEBUG, "%s = %d\n", key, value); } else { av_log(s, AV_LOG_DEBUG, "Skipping unsupported key: %s\n", key); avio_skip(pb, len); } } } if (avio_r8(pb) != 6) return AVERROR_INVALIDDATA; avio_skip(pb, 12); avio_skip(pb, avio_rb64(pb) + pos - avio_tell(s->pb)); if (avio_r8(pb) != 8) return AVERROR_INVALIDDATA; avio_skip(pb, 8); return 0; } static int ivr_read_packet(AVFormatContext *s, AVPacket *pkt) { RMDemuxContext *rm = s->priv_data; int ret = AVERROR_EOF, opcode; AVIOContext *pb = s->pb; unsigned size, index; int64_t pos, pts; if (avio_feof(pb) || rm->data_end) return AVERROR_EOF; pos = avio_tell(pb); for (;;) { if (rm->audio_pkt_cnt) { // If there are queued audio packet return them first AVStream *st; st = s->streams[rm->audio_stream_num]; ret = ff_rm_retrieve_cache(s, pb, st, st->priv_data, pkt); if (ret < 0) { return ret; } } else { if (rm->remaining_len) { avio_skip(pb, rm->remaining_len); rm->remaining_len = 0; } if (avio_feof(pb)) return AVERROR_EOF; opcode = avio_r8(pb); if (opcode == 2) { AVStream *st; int seq = 1; pts = avio_rb32(pb); index = avio_rb16(pb); if (index >= s->nb_streams) return AVERROR_INVALIDDATA; avio_skip(pb, 4); size = avio_rb32(pb); avio_skip(pb, 4); if (size < 1 || size > INT_MAX/4) { av_log(s, AV_LOG_ERROR, "size %u is invalid\n", size); return AVERROR_INVALIDDATA; } st = s->streams[index]; ret = ff_rm_parse_packet(s, pb, st, st->priv_data, size, pkt, &seq, 0, pts); if (ret < -1) { return ret; } else if (ret) { continue; } pkt->pos = pos; pkt->pts = pts; pkt->stream_index = index; } else if (opcode == 7) { pos = avio_rb64(pb); if (!pos) { rm->data_end = 1; return AVERROR_EOF; } } else { av_log(s, AV_LOG_ERROR, "Unsupported opcode=%d at %"PRIX64"\n", opcode, avio_tell(pb) - 1); return AVERROR(EIO); } } break; } return ret; } AVInputFormat ff_ivr_demuxer = { .name = "ivr", .long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"), .priv_data_size = sizeof(RMDemuxContext), .read_probe = ivr_probe, .read_header = ivr_read_header, .read_packet = ivr_read_packet, .read_close = rm_read_close, .extensions = "ivr", };