| /* | |
| * "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/channel_layout.h" | |
| #include "libavutil/internal.h" | |
| #include "libavutil/intreadwrite.h" | |
| #include "libavutil/dict.h" | |
| #include "avformat.h" | |
| #include "avio_internal.h" | |
| #include "demux.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 inline void get_strl(AVIOContext *pb, char *buf, int buf_size, int len) | |
| { | |
| int read = avio_get_str(pb, len, buf, buf_size); | |
| if (read > 0) | |
| avio_skip(pb, len - read); | |
| } | |
| 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; | |
| } | |
| return ff_get_extradata(s, par, pb, size); | |
| } | |
| 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); | |
| if (len > 0) { | |
| 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) | |
| { | |
| if (!rms) | |
| return; | |
| av_packet_unref(&rms->pkt); | |
| } | |
| static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb, | |
| AVStream *st, RMStream *ast, int read_all) | |
| { | |
| FFStream *const sti = ffstream(st); | |
| 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->ch_layout = (AVChannelLayout)AV_CHANNEL_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 */ | |
| coded_framesize = avio_rb32(pb); /* coded frame size */ | |
| if (coded_framesize < 0) | |
| return AVERROR_INVALIDDATA; | |
| ast->coded_framesize = coded_framesize; | |
| 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->ch_layout.nb_channels = avio_rb16(pb); | |
| if (version == 5) { | |
| ast->deint_id = avio_rl32(pb); | |
| if (avio_read(pb, buf, 4) != 4) | |
| return AVERROR_INVALIDDATA; | |
| 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: | |
| sti->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: | |
| sti->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((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){ | |
| 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]; | |
| sti->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((unsigned)codecdata_length > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE){ | |
| 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 * (uint64_t)sub_packet_h > (2LL + (sub_packet_h & 1)) * ast->audio_framesize) | |
| return AVERROR_INVALIDDATA; | |
| if (ast->coded_framesize * (uint64_t)sub_packet_h != 2LL*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 * (uint64_t)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; | |
| // Duplicate tags | |
| if ( st->codecpar->codec_type != AVMEDIA_TYPE_UNKNOWN | |
| && st->codecpar->codec_type != AVMEDIA_TYPE_DATA) | |
| return AVERROR_INVALIDDATA; | |
| 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_remove_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; | |
| ffstream(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++) { | |
| if (avio_feof(pb)) | |
| return AVERROR_INVALIDDATA; | |
| 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, NULL); | |
| 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; | |
| 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); | |
| if (tag_size < 0) | |
| return AVERROR_INVALIDDATA; | |
| avio_skip(pb, tag_size - 8); | |
| for(;;) { | |
| if (avio_feof(pb)) | |
| return AVERROR_INVALIDDATA; | |
| 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')) | |
| return AVERROR_INVALIDDATA; | |
| 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) | |
| return AVERROR(ENOMEM); | |
| 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) | |
| return ret; | |
| avio_seek(pb, codec_pos + size, SEEK_SET); | |
| } else { | |
| avio_skip(pb, -4); | |
| ret = ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data, | |
| size, mime); | |
| if (ret < 0) | |
| return ret; | |
| } | |
| 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; | |
| } | |
| 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; | |
| int64_t expected_len; | |
| len = avio_rb32(pb); | |
| avio_skip(pb, 2); | |
| n_pkts = avio_rb32(pb); | |
| expected_len = 20 + n_pkts * 14LL; | |
| if (len == 20 && expected_len <= INT_MAX) | |
| /* 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 %"PRId64".\n", | |
| len, n_pkts, expected_len); | |
| if(len < 14) | |
| continue; | |
| len -= 14; // we already read part of the index header | |
| 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; | |
| mlti_id = FFMAX(mlti_id, 0) << 16; | |
| *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 ((ret = av_new_packet(pkt, len + 9)) < 0) | |
| return ret; | |
| 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 ((ret = av_new_packet(&vst->pkt, vst->videobufsize)) < 0) | |
| return ret; | |
| 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; | |
| av_packet_move_ref(pkt, &vst->pkt); | |
| 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); | |
| av_shrink_packet(pkt, 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, res, seq = 1; | |
| int64_t timestamp, pos, len; | |
| 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 * (int64_t)ast->sub_packet_h / 2; | |
| if (len > INT_MAX) | |
| return AVERROR_INVALIDDATA; | |
| 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(const 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; | |
| } | |
| const FFInputFormat ff_rm_demuxer = { | |
| .p.name = "rm", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("RealMedia"), | |
| .priv_data_size = sizeof(RMDemuxContext), | |
| .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP, | |
| .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, | |
| }; | |
| const FFInputFormat ff_rdt_demuxer = { | |
| .p.name = "rdt", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("RDT demuxer"), | |
| .p.flags = AVFMT_NOFILE, | |
| .priv_data_size = sizeof(RMDemuxContext), | |
| .read_close = rm_read_close, | |
| }; | |
| static int ivr_probe(const 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=0, 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); | |
| } | |
| if (offset <= 0) | |
| return AVERROR_INVALIDDATA; | |
| 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++) { | |
| if (!(st = avformat_new_stream(s, NULL)) || | |
| !(st->priv_data = ff_rm_alloc_rmstream())) | |
| 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 { | |
| if (avio_feof(pb)) | |
| return AVERROR_INVALIDDATA; | |
| 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++) { | |
| 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, "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_seek(pb, avio_rb64(pb) + pos, SEEK_SET); | |
| 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; | |
| } | |
| const FFInputFormat ff_ivr_demuxer = { | |
| .p.name = "ivr", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("IVR (Internet Video Recording)"), | |
| .p.extensions = "ivr", | |
| .priv_data_size = sizeof(RMDemuxContext), | |
| .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP, | |
| .read_probe = ivr_probe, | |
| .read_header = ivr_read_header, | |
| .read_packet = ivr_read_packet, | |
| .read_close = rm_read_close, | |
| }; |