X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Frdt.c;h=77c1c8c9205590d9ef056ad1b29e4a614d290cb5;hb=12b54a1f39fee22fa0399825ae47a43e60bad4c5;hp=7c66242220f09eb24c4a5a6a286f2c5a3c894990;hpb=9106a698e726c041128a05db0a011caae755d10b;p=ffmpeg diff --git a/libavformat/rdt.c b/libavformat/rdt.c index 7c66242220f..77c1c8c9205 100644 --- a/libavformat/rdt.c +++ b/libavformat/rdt.c @@ -2,25 +2,25 @@ * Realmedia RTSP protocol (RDT) support. * Copyright (c) 2007 Ronald S. Bultje * - * This file is part of FFmpeg. + * This file is part of Libav. * - * FFmpeg is free software; you can redistribute it and/or + * Libav 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, + * Libav 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 + * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** - * @file libavformat/rdt.c + * @file * @brief Realmedia RTSP protocol (RDT) support * @author Ronald S. Bultje */ @@ -33,6 +33,7 @@ #include "libavutil/md5.h" #include "rm.h" #include "internal.h" +#include "avio_internal.h" #include "libavcodec/get_bits.h" struct RDTDemuxContext { @@ -63,11 +64,11 @@ ff_rdt_parse_open(AVFormatContext *ic, int first_stream_of_set_idx, do { s->n_streams++; } while (first_stream_of_set_idx + s->n_streams < ic->nb_streams && - s->streams[s->n_streams]->priv_data == s->streams[0]->priv_data); + s->streams[s->n_streams]->id == s->streams[0]->id); s->prev_set_id = -1; s->prev_stream_id = -1; s->prev_timestamp = -1; - s->parse_packet = handler->parse_packet; + s->parse_packet = handler ? handler->parse_packet : NULL; s->dynamic_protocol_context = priv_data; return s; @@ -76,17 +77,13 @@ ff_rdt_parse_open(AVFormatContext *ic, int first_stream_of_set_idx, void ff_rdt_parse_close(RDTDemuxContext *s) { - int i; - - for (i = 1; i < s->n_streams; i++) - s->streams[i]->priv_data = NULL; - av_free(s); } struct PayloadContext { AVFormatContext *rmctx; - RMStream *rmst[MAX_STREAMS]; + int nb_rmst; + RMStream **rmst; uint8_t *mlti_data; unsigned int mlti_data_size; char buffer[RTP_MAX_PACKET_LENGTH + FF_INPUT_BUFFER_PADDING_SIZE]; @@ -120,8 +117,7 @@ ff_rdt_calc_response_and_checksum(char response[41], char chksum[9], buf[8 + i] ^= xor_table[i]; av_md5_sum(zres, buf, 64); - ff_data_to_hex(response, zres, 16); - for (i=0;i<32;i++) response[i] = tolower(response[i]); + ff_data_to_hex(response, zres, 16, 1); /* add tail */ strcpy (response + 32, "01d0a8e3"); @@ -135,50 +131,50 @@ ff_rdt_calc_response_and_checksum(char response[41], char chksum[9], static int rdt_load_mdpr (PayloadContext *rdt, AVStream *st, int rule_nr) { - ByteIOContext pb; + AVIOContext pb; int size; uint32_t tag; /** * Layout of the MLTI chunk: - * 4:MLTI - * 2: + * 4: MLTI + * 2: number of streams * Then for each stream ([number_of_streams] times): - * 2: - * 2: + * 2: mdpr index + * 2: number of mdpr chunks * Then for each mdpr chunk ([number_of_mdpr_chunks] times): - * 4: - * [size]: + * 4: size + * [size]: data * we skip MDPR chunks until we reach the one of the stream * we're interested in, and forward that ([size]+[data]) to * the RM demuxer to parse the stream-specific header data. */ if (!rdt->mlti_data) return -1; - init_put_byte(&pb, rdt->mlti_data, rdt->mlti_data_size, 0, + ffio_init_context(&pb, rdt->mlti_data, rdt->mlti_data_size, 0, NULL, NULL, NULL, NULL); - tag = get_le32(&pb); + tag = avio_rl32(&pb); if (tag == MKTAG('M', 'L', 'T', 'I')) { int num, chunk_nr; /* read index of MDPR chunk numbers */ - num = get_be16(&pb); + num = avio_rb16(&pb); if (rule_nr < 0 || rule_nr >= num) return -1; - url_fskip(&pb, rule_nr * 2); - chunk_nr = get_be16(&pb); - url_fskip(&pb, (num - 1 - rule_nr) * 2); + avio_skip(&pb, rule_nr * 2); + chunk_nr = avio_rb16(&pb); + avio_skip(&pb, (num - 1 - rule_nr) * 2); /* read MDPR chunks */ - num = get_be16(&pb); + num = avio_rb16(&pb); if (chunk_nr >= num) return -1; while (chunk_nr--) - url_fskip(&pb, get_be32(&pb)); - size = get_be32(&pb); + avio_skip(&pb, avio_rb32(&pb)); + size = avio_rb32(&pb); } else { size = rdt->mlti_data_size; - url_fseek(&pb, 0, SEEK_SET); + avio_seek(&pb, 0, SEEK_SET); } if (ff_rm_read_mdpr_codecdata(rdt->rmctx, &pb, st, rdt->rmst[st->index], size) < 0) return -1; @@ -297,25 +293,25 @@ ff_rdt_parse_header(const uint8_t *buf, int len, static int rdt_parse_packet (AVFormatContext *ctx, PayloadContext *rdt, AVStream *st, AVPacket *pkt, uint32_t *timestamp, - const uint8_t *buf, int len, int flags) + const uint8_t *buf, int len, uint16_t rtp_seq, int flags) { int seq = 1, res; - ByteIOContext pb; + AVIOContext pb; if (rdt->audio_pkt_cnt == 0) { int pos; - init_put_byte(&pb, buf, len, 0, NULL, NULL, NULL, NULL); + ffio_init_context(&pb, buf, len, 0, NULL, NULL, NULL, NULL); flags = (flags & RTP_FLAG_KEY) ? 2 : 0; res = ff_rm_parse_packet (rdt->rmctx, &pb, st, rdt->rmst[st->index], len, pkt, - &seq, &flags, timestamp); - pos = url_ftell(&pb); + &seq, flags, *timestamp); + pos = avio_tell(&pb); if (res < 0) return res; if (res > 0) { - if (st->codec->codec_id == CODEC_ID_AAC) { + if (st->codec->codec_id == AV_CODEC_ID_AAC) { memcpy (rdt->buffer, buf + pos, len - pos); - rdt->rmctx->pb = av_alloc_put_byte (rdt->buffer, len - pos, 0, + rdt->rmctx->pb = avio_alloc_context (rdt->buffer, len - pos, 0, NULL, NULL, NULL, NULL); } goto get_cache; @@ -326,7 +322,7 @@ get_cache: ff_rm_retrieve_cache (rdt->rmctx, rdt->rmctx->pb, st, rdt->rmst[st->index], pkt); if (rdt->audio_pkt_cnt == 0 && - st->codec->codec_id == CODEC_ID_AAC) + st->codec->codec_id == AV_CODEC_ID_AAC) av_freep(&rdt->rmctx->pb); } pkt->stream_index = st->index; @@ -337,8 +333,9 @@ get_cache: int ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt, - const uint8_t *buf, int len) + uint8_t **bufptr, int len) { + uint8_t *buf = bufptr ? *bufptr : NULL; int seq_no, flags = 0, stream_id, set_id, is_keyframe; uint32_t timestamp; int rv= 0; @@ -351,7 +348,7 @@ ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt, timestamp= 0; ///< Should not be used if buf is NULL, but should be set to the timestamp of the packet returned.... rv= s->parse_packet(s->ic, s->dynamic_protocol_context, s->streams[s->prev_stream_id], - pkt, ×tamp, NULL, 0, flags); + pkt, ×tamp, NULL, 0, 0, flags); return rv; } @@ -378,7 +375,7 @@ ff_rdt_parse_packet(RDTDemuxContext *s, AVPacket *pkt, rv = s->parse_packet(s->ic, s->dynamic_protocol_context, s->streams[s->prev_stream_id], - pkt, ×tamp, buf, len, flags); + pkt, ×tamp, buf, len, 0, flags); return rv; } @@ -418,16 +415,23 @@ rdt_parse_sdp_line (AVFormatContext *s, int st_index, } else if (av_strstart(p, "StartTime:integer;", &p)) stream->first_dts = atoi(p); else if (av_strstart(p, "ASMRuleBook:string;", &p)) { - int n = st_index, first = -1; + int n, first = -1; for (n = 0; n < s->nb_streams; n++) - if (s->streams[n]->priv_data == stream->priv_data) { + if (s->streams[n]->id == stream->id) { + int count = s->streams[n]->index + 1; if (first == -1) first = n; + if (rdt->nb_rmst < count) { + RMStream **rmst= av_realloc(rdt->rmst, count*sizeof(*rmst)); + if (!rmst) + return AVERROR(ENOMEM); + memset(rmst + rdt->nb_rmst, 0, + (count - rdt->nb_rmst) * sizeof(*rmst)); + rdt->rmst = rmst; + rdt->nb_rmst = count; + } rdt->rmst[s->streams[n]->index] = ff_rm_alloc_rmstream(); rdt_load_mdpr(rdt, s->streams[n], (n - first) * 2); - - if (s->streams[n]->codec->codec_id == CODEC_ID_AAC) - s->streams[n]->codec->frame_size = 1; // FIXME } } @@ -452,10 +456,10 @@ add_dstream(AVFormatContext *s, AVStream *orig_st) { AVStream *st; - if (!(st = av_new_stream(s, 0))) + if (!(st = avformat_new_stream(s, NULL))) return NULL; + st->id = orig_st->id; st->codec->codec_type = orig_st->codec->codec_type; - st->priv_data = orig_st->priv_data; st->first_dts = orig_st->first_dts; return st; @@ -466,7 +470,7 @@ real_parse_asm_rulebook(AVFormatContext *s, AVStream *orig_st, const char *p) { const char *end; - int n_rules, odd = 0; + int n_rules = 0, odd = 0; AVStream *st; /** @@ -477,14 +481,14 @@ real_parse_asm_rulebook(AVFormatContext *s, AVStream *orig_st, * is set and once for if it isn't. We only read the first because we * don't care much (that's what the "odd" variable is for). * Each rule contains a set of one or more statements, optionally - * preceeded by a single condition. If there's a condition, the rule + * preceded by a single condition. If there's a condition, the rule * starts with a '#'. Multiple conditions are merged between brackets, * so there are never multiple conditions spread out over separate * statements. Generally, these conditions are bitrate limits (min/max) * for multi-bitrate streams. */ if (*p == '\"') p++; - for (n_rules = 0; s->nb_streams < MAX_STREAMS;) { + while (1) { if (!(end = strchr(p, ';'))) break; if (!odd && end != p) { @@ -492,6 +496,8 @@ real_parse_asm_rulebook(AVFormatContext *s, AVStream *orig_st, st = add_dstream(s, orig_st); else st = orig_st; + if (!st) + break; real_parse_asm_rule(st, p, end); n_rules++; } @@ -511,46 +517,51 @@ ff_real_parse_sdp_a_line (AVFormatContext *s, int stream_index, } static PayloadContext * -rdt_new_extradata (void) +rdt_new_context (void) { PayloadContext *rdt = av_mallocz(sizeof(PayloadContext)); - av_open_input_stream(&rdt->rmctx, NULL, "", &rdt_demuxer, NULL); + int ret = avformat_open_input(&rdt->rmctx, "", &ff_rdt_demuxer, NULL); + if (ret < 0) { + av_free(rdt); + return NULL; + } return rdt; } static void -rdt_free_extradata (PayloadContext *rdt) +rdt_free_context (PayloadContext *rdt) { int i; - for (i = 0; i < MAX_STREAMS; i++) + for (i = 0; i < rdt->nb_rmst; i++) if (rdt->rmst[i]) { ff_rm_free_rmstream(rdt->rmst[i]); av_freep(&rdt->rmst[i]); } if (rdt->rmctx) - av_close_input_stream(rdt->rmctx); + avformat_close_input(&rdt->rmctx); av_freep(&rdt->mlti_data); + av_freep(&rdt->rmst); av_free(rdt); } #define RDT_HANDLER(n, s, t) \ static RTPDynamicProtocolHandler ff_rdt_ ## n ## _handler = { \ - s, \ - t, \ - CODEC_ID_NONE, \ - rdt_parse_sdp_line, \ - rdt_new_extradata, \ - rdt_free_extradata, \ - rdt_parse_packet \ -}; + .enc_name = s, \ + .codec_type = t, \ + .codec_id = AV_CODEC_ID_NONE, \ + .parse_sdp_a_line = rdt_parse_sdp_line, \ + .alloc = rdt_new_context, \ + .free = rdt_free_context, \ + .parse_packet = rdt_parse_packet \ +} -RDT_HANDLER(live_video, "x-pn-multirate-realvideo-live", CODEC_TYPE_VIDEO); -RDT_HANDLER(live_audio, "x-pn-multirate-realaudio-live", CODEC_TYPE_AUDIO); -RDT_HANDLER(video, "x-pn-realvideo", CODEC_TYPE_VIDEO); -RDT_HANDLER(audio, "x-pn-realaudio", CODEC_TYPE_AUDIO); +RDT_HANDLER(live_video, "x-pn-multirate-realvideo-live", AVMEDIA_TYPE_VIDEO); +RDT_HANDLER(live_audio, "x-pn-multirate-realaudio-live", AVMEDIA_TYPE_AUDIO); +RDT_HANDLER(video, "x-pn-realvideo", AVMEDIA_TYPE_VIDEO); +RDT_HANDLER(audio, "x-pn-realaudio", AVMEDIA_TYPE_AUDIO); void av_register_rdt_dynamic_payload_handlers(void) {