X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Frtsp.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_04%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Frtsp.c;h=0000000000000000000000000000000000000000;hb=3a6643238c67c043fc3592837a05d6d2861967f1;hp=802591dd965d45d51a37cbd523e4d3359b112525;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/rtsp.c b/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/rtsp.c deleted file mode 100644 index 802591d..0000000 --- a/synfig-core/tags/synfig_0_61_04/synfig-core/src/modules/mod_libavcodec/libavformat/rtsp.c +++ /dev/null @@ -1,1256 +0,0 @@ -/* - * RTSP/SDP client - * Copyright (c) 2002 Fabrice Bellard. - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include "avformat.h" - -#include /* for select() prototype */ -#include -#include -#include -#ifndef __BEOS__ -# include -#else -# include "barpainet.h" -#endif - -//#define DEBUG -//#define DEBUG_RTP_TCP - -typedef struct RTSPState { - URLContext *rtsp_hd; /* RTSP TCP connexion handle */ - /* XXX: currently we use unbuffered input */ - // ByteIOContext rtsp_gb; - int seq; /* RTSP command sequence number */ - char session_id[512]; - enum RTSPProtocol protocol; - char last_reply[2048]; /* XXX: allocate ? */ -} RTSPState; - -typedef struct RTSPStream { - AVFormatContext *ic; - int interleaved_min, interleaved_max; /* interleave ids, if TCP transport */ - char control_url[1024]; /* url for this stream (from SDP) */ - - int sdp_port; /* port (from SDP content - not used in RTSP) */ - struct in_addr sdp_ip; /* IP address (from SDP content - not used in RTSP) */ - int sdp_ttl; /* IP TTL (from SDP content - not used in RTSP) */ - int sdp_payload_type; /* payload type - only used in SDP */ -} RTSPStream; - -/* XXX: currently, the only way to change the protocols consists in - changing this variable */ -#if 1 -int rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP) | (1 << RTSP_PROTOCOL_RTP_UDP) | (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST); -#else -/* try it if a proxy is used */ -int rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP); -#endif - -/* if non zero, then set a range for RTP ports */ -int rtsp_rtp_port_min = 0; -int rtsp_rtp_port_max = 0; - -FFRTSPCallback *ff_rtsp_callback = NULL; - -static int rtsp_probe(AVProbeData *p) -{ - if (strstart(p->filename, "rtsp:", NULL)) - return AVPROBE_SCORE_MAX; - return 0; -} - -static int redir_isspace(int c) -{ - return (c == ' ' || c == '\t' || c == '\n' || c == '\r'); -} - -static void skip_spaces(const char **pp) -{ - const char *p; - p = *pp; - while (redir_isspace(*p)) - p++; - *pp = p; -} - -static void get_word_sep(char *buf, int buf_size, const char *sep, - const char **pp) -{ - const char *p; - char *q; - - p = *pp; - skip_spaces(&p); - q = buf; - while (!strchr(sep, *p) && *p != '\0') { - if ((q - buf) < buf_size - 1) - *q++ = *p; - p++; - } - if (buf_size > 0) - *q = '\0'; - *pp = p; -} - -static void get_word(char *buf, int buf_size, const char **pp) -{ - const char *p; - char *q; - - p = *pp; - skip_spaces(&p); - q = buf; - while (!redir_isspace(*p) && *p != '\0') { - if ((q - buf) < buf_size - 1) - *q++ = *p; - p++; - } - if (buf_size > 0) - *q = '\0'; - *pp = p; -} - -/* parse the rtpmap description: /[/] */ -static int sdp_parse_rtpmap(AVCodecContext *codec, const char *p) -{ - char buf[256]; - - /* codec name */ - get_word_sep(buf, sizeof(buf), "/", &p); - if (!strcmp(buf, "MP4V-ES")) { - codec->codec_id = CODEC_ID_MPEG4; - return 0; - } else { - return -1; - } -} - -/* return the length and optionnaly the data */ -static int hex_to_data(uint8_t *data, const char *p) -{ - int c, len, v; - - len = 0; - v = 1; - for(;;) { - skip_spaces(&p); - if (p == '\0') - break; - c = toupper((unsigned char)*p++); - if (c >= '0' && c <= '9') - c = c - '0'; - else if (c >= 'A' && c <= 'F') - c = c - 'A' + 10; - else - break; - v = (v << 4) | c; - if (v & 0x100) { - if (data) - data[len] = v; - len++; - v = 1; - } - } - return len; -} - -static void sdp_parse_fmtp(AVCodecContext *codec, const char *p) -{ - char attr[256]; - char value[4096]; - int len; - - /* loop on each attribute */ - for(;;) { - skip_spaces(&p); - if (*p == '\0') - break; - get_word_sep(attr, sizeof(attr), "=", &p); - if (*p == '=') - p++; - get_word_sep(value, sizeof(value), ";", &p); - if (*p == ';') - p++; - /* handle MPEG4 video */ - switch(codec->codec_id) { - case CODEC_ID_MPEG4: - if (!strcmp(attr, "config")) { - /* decode the hexa encoded parameter */ - len = hex_to_data(NULL, value); - codec->extradata = av_mallocz(len); - if (!codec->extradata) - goto fail; - codec->extradata_size = len; - hex_to_data(codec->extradata, value); - } - break; - default: - /* ignore data for other codecs */ - break; - } - fail: ; - // printf("'%s' = '%s'\n", attr, value); - } -} - -typedef struct SDPParseState { - /* SDP only */ - struct in_addr default_ip; - int default_ttl; -} SDPParseState; - -static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1, - int letter, const char *buf) -{ - char buf1[64], st_type[64]; - const char *p; - int codec_type, payload_type, i; - AVStream *st; - RTSPStream *rtsp_st; - struct in_addr sdp_ip; - int ttl; - -#ifdef DEBUG - printf("sdp: %c='%s'\n", letter, buf); -#endif - - p = buf; - switch(letter) { - case 'c': - get_word(buf1, sizeof(buf1), &p); - if (strcmp(buf1, "IN") != 0) - return; - get_word(buf1, sizeof(buf1), &p); - if (strcmp(buf1, "IP4") != 0) - return; - get_word_sep(buf1, sizeof(buf1), "/", &p); - if (inet_aton(buf1, &sdp_ip) == 0) - return; - ttl = 16; - if (*p == '/') { - p++; - get_word_sep(buf1, sizeof(buf1), "/", &p); - ttl = atoi(buf1); - } - if (s->nb_streams == 0) { - s1->default_ip = sdp_ip; - s1->default_ttl = ttl; - } else { - st = s->streams[s->nb_streams - 1]; - rtsp_st = st->priv_data; - rtsp_st->sdp_ip = sdp_ip; - rtsp_st->sdp_ttl = ttl; - } - break; - case 's': - pstrcpy(s->title, sizeof(s->title), p); - break; - case 'i': - if (s->nb_streams == 0) { - pstrcpy(s->comment, sizeof(s->comment), p); - break; - } - break; - case 'm': - /* new stream */ - get_word(st_type, sizeof(st_type), &p); - if (!strcmp(st_type, "audio")) { - codec_type = CODEC_TYPE_AUDIO; - } else if (!strcmp(st_type, "video")) { - codec_type = CODEC_TYPE_VIDEO; - } else { - return; - } - rtsp_st = av_mallocz(sizeof(RTSPStream)); - if (!rtsp_st) - return; - st = av_new_stream(s, s->nb_streams); - if (!st) - return; - st->priv_data = rtsp_st; - - rtsp_st->sdp_ip = s1->default_ip; - rtsp_st->sdp_ttl = s1->default_ttl; - - st->codec.codec_type = codec_type; - - get_word(buf1, sizeof(buf1), &p); /* port */ - rtsp_st->sdp_port = atoi(buf1); - - get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */ - - /* XXX: handle list of formats */ - get_word(buf1, sizeof(buf1), &p); /* format list */ - rtsp_st->sdp_payload_type = atoi(buf1); - if (rtsp_st->sdp_payload_type < 96) { - /* if standard payload type, we can find the codec right now */ - rtp_get_codec_info(&st->codec, rtsp_st->sdp_payload_type); - } - - /* put a default control url */ - pstrcpy(rtsp_st->control_url, sizeof(rtsp_st->control_url), s->filename); - break; - case 'a': - if (strstart(p, "control:", &p) && s->nb_streams > 0) { - char proto[32]; - /* get the control url */ - st = s->streams[s->nb_streams - 1]; - rtsp_st = st->priv_data; - - /* XXX: may need to add full url resolution */ - url_split(proto, sizeof(proto), NULL, 0, NULL, NULL, 0, p); - if (proto[0] == '\0') { - /* relative control URL */ - pstrcat(rtsp_st->control_url, sizeof(rtsp_st->control_url), "/"); - pstrcat(rtsp_st->control_url, sizeof(rtsp_st->control_url), p); - } else { - pstrcpy(rtsp_st->control_url, sizeof(rtsp_st->control_url), p); - } - } else if (strstart(p, "rtpmap:", &p)) { - /* NOTE: rtpmap is only supported AFTER the 'm=' tag */ - get_word(buf1, sizeof(buf1), &p); - payload_type = atoi(buf1); - for(i = 0; i < s->nb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st->sdp_payload_type == payload_type) { - sdp_parse_rtpmap(&st->codec, p); - } - } - } else if (strstart(p, "fmtp:", &p)) { - /* NOTE: fmtp is only supported AFTER the 'a=rtpmap:xxx' tag */ - get_word(buf1, sizeof(buf1), &p); - payload_type = atoi(buf1); - for(i = 0; i < s->nb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st->sdp_payload_type == payload_type) { - sdp_parse_fmtp(&st->codec, p); - } - } - } - break; - } -} - -static int sdp_parse(AVFormatContext *s, const char *content) -{ - const char *p; - int letter; - char buf[1024], *q; - SDPParseState sdp_parse_state, *s1 = &sdp_parse_state; - - memset(s1, 0, sizeof(SDPParseState)); - p = content; - for(;;) { - skip_spaces(&p); - letter = *p; - if (letter == '\0') - break; - p++; - if (*p != '=') - goto next_line; - p++; - /* get the content */ - q = buf; - while (*p != '\n' && *p != '\r' && *p != '\0') { - if ((q - buf) < sizeof(buf) - 1) - *q++ = *p; - p++; - } - *q = '\0'; - sdp_parse_line(s, s1, letter, buf); - next_line: - while (*p != '\n' && *p != '\0') - p++; - if (*p == '\n') - p++; - } - return 0; -} - -static void rtsp_parse_range(int *min_ptr, int *max_ptr, const char **pp) -{ - const char *p; - int v; - - p = *pp; - skip_spaces(&p); - v = strtol(p, (char **)&p, 10); - if (*p == '-') { - p++; - *min_ptr = v; - v = strtol(p, (char **)&p, 10); - *max_ptr = v; - } else { - *min_ptr = v; - *max_ptr = v; - } - *pp = p; -} - -/* XXX: only one transport specification is parsed */ -static void rtsp_parse_transport(RTSPHeader *reply, const char *p) -{ - char transport_protocol[16]; - char profile[16]; - char lower_transport[16]; - char parameter[16]; - RTSPTransportField *th; - char buf[256]; - - reply->nb_transports = 0; - - for(;;) { - skip_spaces(&p); - if (*p == '\0') - break; - - th = &reply->transports[reply->nb_transports]; - - get_word_sep(transport_protocol, sizeof(transport_protocol), - "/", &p); - if (*p == '/') - p++; - get_word_sep(profile, sizeof(profile), "/;,", &p); - lower_transport[0] = '\0'; - if (*p == '/') { - p++; - get_word_sep(lower_transport, sizeof(lower_transport), - ";,", &p); - } - if (!strcasecmp(lower_transport, "TCP")) - th->protocol = RTSP_PROTOCOL_RTP_TCP; - else - th->protocol = RTSP_PROTOCOL_RTP_UDP; - - if (*p == ';') - p++; - /* get each parameter */ - while (*p != '\0' && *p != ',') { - get_word_sep(parameter, sizeof(parameter), "=;,", &p); - if (!strcmp(parameter, "port")) { - if (*p == '=') { - p++; - rtsp_parse_range(&th->port_min, &th->port_max, &p); - } - } else if (!strcmp(parameter, "client_port")) { - if (*p == '=') { - p++; - rtsp_parse_range(&th->client_port_min, - &th->client_port_max, &p); - } - } else if (!strcmp(parameter, "server_port")) { - if (*p == '=') { - p++; - rtsp_parse_range(&th->server_port_min, - &th->server_port_max, &p); - } - } else if (!strcmp(parameter, "interleaved")) { - if (*p == '=') { - p++; - rtsp_parse_range(&th->interleaved_min, - &th->interleaved_max, &p); - } - } else if (!strcmp(parameter, "multicast")) { - if (th->protocol == RTSP_PROTOCOL_RTP_UDP) - th->protocol = RTSP_PROTOCOL_RTP_UDP_MULTICAST; - } else if (!strcmp(parameter, "ttl")) { - if (*p == '=') { - p++; - th->ttl = strtol(p, (char **)&p, 10); - } - } else if (!strcmp(parameter, "destination")) { - struct in_addr ipaddr; - - if (*p == '=') { - p++; - get_word_sep(buf, sizeof(buf), ";,", &p); - if (inet_aton(buf, &ipaddr)) - th->destination = ntohl(ipaddr.s_addr); - } - } - while (*p != ';' && *p != '\0' && *p != ',') - p++; - if (*p == ';') - p++; - } - if (*p == ',') - p++; - - reply->nb_transports++; - } -} - -void rtsp_parse_line(RTSPHeader *reply, const char *buf) -{ - const char *p; - - /* NOTE: we do case independent match for broken servers */ - p = buf; - if (stristart(p, "Session:", &p)) { - get_word_sep(reply->session_id, sizeof(reply->session_id), ";", &p); - } else if (stristart(p, "Content-Length:", &p)) { - reply->content_length = strtol(p, NULL, 10); - } else if (stristart(p, "Transport:", &p)) { - rtsp_parse_transport(reply, p); - } else if (stristart(p, "CSeq:", &p)) { - reply->seq = strtol(p, NULL, 10); - } -} - -/* skip a RTP/TCP interleaved packet */ -static void rtsp_skip_packet(AVFormatContext *s) -{ - RTSPState *rt = s->priv_data; - int ret, len, len1; - uint8_t buf[1024]; - - ret = url_read(rt->rtsp_hd, buf, 3); - if (ret != 3) - return; - len = (buf[1] << 8) | buf[2]; -#ifdef DEBUG - printf("skipping RTP packet len=%d\n", len); -#endif - /* skip payload */ - while (len > 0) { - len1 = len; - if (len1 > sizeof(buf)) - len1 = sizeof(buf); - ret = url_read(rt->rtsp_hd, buf, len1); - if (ret != len1) - return; - len -= len1; - } -} - -static void rtsp_send_cmd(AVFormatContext *s, - const char *cmd, RTSPHeader *reply, - unsigned char **content_ptr) -{ - RTSPState *rt = s->priv_data; - char buf[4096], buf1[1024], *q; - unsigned char ch; - const char *p; - int content_length, line_count; - unsigned char *content = NULL; - - memset(reply, 0, sizeof(RTSPHeader)); - - rt->seq++; - pstrcpy(buf, sizeof(buf), cmd); - snprintf(buf1, sizeof(buf1), "CSeq: %d\r\n", rt->seq); - pstrcat(buf, sizeof(buf), buf1); - if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) { - snprintf(buf1, sizeof(buf1), "Session: %s\r\n", rt->session_id); - pstrcat(buf, sizeof(buf), buf1); - } - pstrcat(buf, sizeof(buf), "\r\n"); -#ifdef DEBUG - printf("Sending:\n%s--\n", buf); -#endif - url_write(rt->rtsp_hd, buf, strlen(buf)); - - /* parse reply (XXX: use buffers) */ - line_count = 0; - rt->last_reply[0] = '\0'; - for(;;) { - q = buf; - for(;;) { - if (url_read(rt->rtsp_hd, &ch, 1) != 1) - break; - if (ch == '\n') - break; - if (ch == '$') { - /* XXX: only parse it if first char on line ? */ - rtsp_skip_packet(s); - } else if (ch != '\r') { - if ((q - buf) < sizeof(buf) - 1) - *q++ = ch; - } - } - *q = '\0'; -#ifdef DEBUG - printf("line='%s'\n", buf); -#endif - /* test if last line */ - if (buf[0] == '\0') - break; - p = buf; - if (line_count == 0) { - /* get reply code */ - get_word(buf1, sizeof(buf1), &p); - get_word(buf1, sizeof(buf1), &p); - reply->status_code = atoi(buf1); - } else { - rtsp_parse_line(reply, p); - pstrcat(rt->last_reply, sizeof(rt->last_reply), p); - pstrcat(rt->last_reply, sizeof(rt->last_reply), "\n"); - } - line_count++; - } - - if (rt->session_id[0] == '\0' && reply->session_id[0] != '\0') - pstrcpy(rt->session_id, sizeof(rt->session_id), reply->session_id); - - content_length = reply->content_length; - if (content_length > 0) { - /* leave some room for a trailing '\0' (useful for simple parsing) */ - content = av_malloc(content_length + 1); - url_read(rt->rtsp_hd, content, content_length); - content[content_length] = '\0'; - } - if (content_ptr) - *content_ptr = content; -} - -/* useful for modules: set RTSP callback function */ - -void rtsp_set_callback(FFRTSPCallback *rtsp_cb) -{ - ff_rtsp_callback = rtsp_cb; -} - - -static int rtsp_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - RTSPState *rt = s->priv_data; - char host[1024], path[1024], tcpname[1024], cmd[2048]; - URLContext *rtsp_hd; - int port, i, ret, err; - RTSPHeader reply1, *reply = &reply1; - unsigned char *content = NULL; - AVStream *st; - RTSPStream *rtsp_st; - int protocol_mask; - - /* extract hostname and port */ - url_split(NULL, 0, - host, sizeof(host), &port, path, sizeof(path), s->filename); - if (port < 0) - port = RTSP_DEFAULT_PORT; - - /* open the tcp connexion */ - snprintf(tcpname, sizeof(tcpname), "tcp://%s:%d", host, port); - if (url_open(&rtsp_hd, tcpname, URL_RDWR) < 0) - return AVERROR_IO; - rt->rtsp_hd = rtsp_hd; - rt->seq = 0; - - /* describe the stream */ - snprintf(cmd, sizeof(cmd), - "DESCRIBE %s RTSP/1.0\r\n" - "Accept: application/sdp\r\n", - s->filename); - rtsp_send_cmd(s, cmd, reply, &content); - if (!content) { - err = AVERROR_INVALIDDATA; - goto fail; - } - if (reply->status_code != RTSP_STATUS_OK) { - err = AVERROR_INVALIDDATA; - goto fail; - } - - /* now we got the SDP description, we parse it */ - ret = sdp_parse(s, (const char *)content); - av_freep(&content); - if (ret < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - - protocol_mask = rtsp_default_protocols; - - /* for each stream, make the setup request */ - /* XXX: we assume the same server is used for the control of each - RTSP stream */ - for(i=0;inb_streams;i++) { - char transport[2048]; - AVInputFormat *fmt; - - st = s->streams[i]; - rtsp_st = st->priv_data; - - /* compute available transports */ - transport[0] = '\0'; - - /* RTP/UDP */ - if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP)) { - char buf[256]; - int j; - - /* first try in specified port range */ - if (rtsp_rtp_port_min != 0) { - for(j=rtsp_rtp_port_min;j<=rtsp_rtp_port_max;j++) { - snprintf(buf, sizeof(buf), "rtp://?localport=%d", j); - if (!av_open_input_file(&rtsp_st->ic, buf, - &rtp_demux, 0, NULL)) - goto rtp_opened; - } - } - - /* then try on any port */ - if (av_open_input_file(&rtsp_st->ic, "rtp://", - &rtp_demux, 0, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - - rtp_opened: - port = rtp_get_local_port(url_fileno(&rtsp_st->ic->pb)); - if (transport[0] != '\0') - pstrcat(transport, sizeof(transport), ","); - snprintf(transport + strlen(transport), sizeof(transport) - strlen(transport) - 1, - "RTP/AVP/UDP;unicast;client_port=%d-%d", - port, port + 1); - } - - /* RTP/TCP */ - if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_TCP)) { - if (transport[0] != '\0') - pstrcat(transport, sizeof(transport), ","); - snprintf(transport + strlen(transport), sizeof(transport) - strlen(transport) - 1, - "RTP/AVP/TCP"); - } - - if (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST)) { - if (transport[0] != '\0') - pstrcat(transport, sizeof(transport), ","); - snprintf(transport + strlen(transport), - sizeof(transport) - strlen(transport) - 1, - "RTP/AVP/UDP;multicast"); - } - snprintf(cmd, sizeof(cmd), - "SETUP %s RTSP/1.0\r\n" - "Transport: %s\r\n", - rtsp_st->control_url, transport); - rtsp_send_cmd(s, cmd, reply, NULL); - if (reply->status_code != RTSP_STATUS_OK || - reply->nb_transports != 1) { - err = AVERROR_INVALIDDATA; - goto fail; - } - - /* XXX: same protocol for all streams is required */ - if (i > 0) { - if (reply->transports[0].protocol != rt->protocol) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } else { - rt->protocol = reply->transports[0].protocol; - } - - /* close RTP connection if not choosen */ - if (reply->transports[0].protocol != RTSP_PROTOCOL_RTP_UDP && - (protocol_mask & (1 << RTSP_PROTOCOL_RTP_UDP))) { - av_close_input_file(rtsp_st->ic); - rtsp_st->ic = NULL; - } - - switch(reply->transports[0].protocol) { - case RTSP_PROTOCOL_RTP_TCP: - fmt = &rtp_demux; - if (av_open_input_file(&rtsp_st->ic, "null", fmt, 0, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - rtsp_st->interleaved_min = reply->transports[0].interleaved_min; - rtsp_st->interleaved_max = reply->transports[0].interleaved_max; - break; - - case RTSP_PROTOCOL_RTP_UDP: - { - char url[1024]; - - /* XXX: also use address if specified */ - snprintf(url, sizeof(url), "rtp://%s:%d", - host, reply->transports[0].server_port_min); - if (rtp_set_remote_url(url_fileno(&rtsp_st->ic->pb), url) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } - break; - case RTSP_PROTOCOL_RTP_UDP_MULTICAST: - { - char url[1024]; - int ttl; - - fmt = &rtp_demux; - ttl = reply->transports[0].ttl; - if (!ttl) - ttl = 16; - snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d", - host, - reply->transports[0].server_port_min, - ttl); - if (av_open_input_file(&rtsp_st->ic, url, fmt, 0, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } - break; - } - } - - /* use callback if available to extend setup */ - if (ff_rtsp_callback) { - if (ff_rtsp_callback(RTSP_ACTION_CLIENT_SETUP, rt->session_id, - NULL, 0, rt->last_reply) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } - - /* start playing */ - snprintf(cmd, sizeof(cmd), - "PLAY %s RTSP/1.0\r\n" - "Range: npt=0-\r\n", - s->filename); - rtsp_send_cmd(s, cmd, reply, NULL); - if (reply->status_code != RTSP_STATUS_OK) { - err = AVERROR_INVALIDDATA; - goto fail; - } - -#if 0 - /* open TCP with bufferized input */ - if (rt->protocol == RTSP_PROTOCOL_RTP_TCP) { - if (url_fdopen(&rt->rtsp_gb, rt->rtsp_hd) < 0) { - err = AVERROR_NOMEM; - goto fail; - } - } -#endif - - return 0; - fail: - for(i=0;inb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st) { - if (rtsp_st->ic) - av_close_input_file(rtsp_st->ic); - } - av_free(rtsp_st); - } - av_freep(&content); - url_close(rt->rtsp_hd); - return err; -} - -static int tcp_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - RTSPState *rt = s->priv_data; - int id, len, i, ret; - AVStream *st; - RTSPStream *rtsp_st; - uint8_t buf[RTP_MAX_PACKET_LENGTH]; - -#ifdef DEBUG_RTP_TCP - printf("tcp_read_packet:\n"); -#endif - redo: - for(;;) { - ret = url_read(rt->rtsp_hd, buf, 1); -#ifdef DEBUG_RTP_TCP - printf("ret=%d c=%02x [%c]\n", ret, buf[0], buf[0]); -#endif - if (ret != 1) - return AVERROR_IO; - if (buf[0] == '$') - break; - } - ret = url_read(rt->rtsp_hd, buf, 3); - if (ret != 3) - return AVERROR_IO; - id = buf[0]; - len = (buf[1] << 8) | buf[2]; -#ifdef DEBUG_RTP_TCP - printf("id=%d len=%d\n", id, len); -#endif - if (len > RTP_MAX_PACKET_LENGTH || len < 12) - goto redo; - /* get the data */ - ret = url_read(rt->rtsp_hd, buf, len); - if (ret != len) - return AVERROR_IO; - - /* find the matching stream */ - for(i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (id >= rtsp_st->interleaved_min && - id <= rtsp_st->interleaved_max) - goto found; - } - goto redo; - found: - ret = rtp_parse_packet(rtsp_st->ic, pkt, buf, len); - if (ret < 0) - goto redo; - pkt->stream_index = i; - return ret; -} - -/* NOTE: output one packet at a time. May need to add a small fifo */ -static int udp_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - AVFormatContext *ic; - AVStream *st; - RTSPStream *rtsp_st; - fd_set rfds; - int fd1, fd2, fd_max, n, i, ret; - char buf[RTP_MAX_PACKET_LENGTH]; - struct timeval tv; - - for(;;) { - if (url_interrupt_cb()) - return -EIO; - FD_ZERO(&rfds); - fd_max = -1; - for(i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - ic = rtsp_st->ic; - /* currently, we cannot probe RTCP handle because of blocking restrictions */ - rtp_get_file_handles(url_fileno(&ic->pb), &fd1, &fd2); - if (fd1 > fd_max) - fd_max = fd1; - FD_SET(fd1, &rfds); - } - /* XXX: also add proper API to abort */ - tv.tv_sec = 0; - tv.tv_usec = 100 * 1000; - n = select(fd_max + 1, &rfds, NULL, NULL, &tv); - if (n > 0) { - for(i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - ic = rtsp_st->ic; - rtp_get_file_handles(url_fileno(&ic->pb), &fd1, &fd2); - if (FD_ISSET(fd1, &rfds)) { - ret = url_read(url_fileno(&ic->pb), buf, sizeof(buf)); - if (ret >= 0 && - rtp_parse_packet(ic, pkt, buf, ret) == 0) { - pkt->stream_index = i; - return ret; - } - } - } - } - } -} - -static int rtsp_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - RTSPState *rt = s->priv_data; - int ret; - - switch(rt->protocol) { - default: - case RTSP_PROTOCOL_RTP_TCP: - ret = tcp_read_packet(s, pkt); - break; - case RTSP_PROTOCOL_RTP_UDP: - ret = udp_read_packet(s, pkt); - break; - } - return ret; -} - -/* pause the stream */ -int rtsp_pause(AVFormatContext *s) -{ - RTSPState *rt; - RTSPHeader reply1, *reply = &reply1; - char cmd[1024]; - - if (s->iformat != &rtsp_demux) - return -1; - - rt = s->priv_data; - - snprintf(cmd, sizeof(cmd), - "PAUSE %s RTSP/1.0\r\n", - s->filename); - rtsp_send_cmd(s, cmd, reply, NULL); - if (reply->status_code != RTSP_STATUS_OK) { - return -1; - } else { - return 0; - } -} - -/* resume the stream */ -int rtsp_resume(AVFormatContext *s) -{ - RTSPState *rt; - RTSPHeader reply1, *reply = &reply1; - char cmd[1024]; - - if (s->iformat != &rtsp_demux) - return -1; - - rt = s->priv_data; - - snprintf(cmd, sizeof(cmd), - "PLAY %s RTSP/1.0\r\n", - s->filename); - rtsp_send_cmd(s, cmd, reply, NULL); - if (reply->status_code != RTSP_STATUS_OK) { - return -1; - } else { - return 0; - } -} - -static int rtsp_read_close(AVFormatContext *s) -{ - RTSPState *rt = s->priv_data; - AVStream *st; - RTSPStream *rtsp_st; - RTSPHeader reply1, *reply = &reply1; - int i; - char cmd[1024]; - -#if 0 - /* NOTE: it is valid to flush the buffer here */ - if (rt->protocol == RTSP_PROTOCOL_RTP_TCP) { - url_fclose(&rt->rtsp_gb); - } -#endif - snprintf(cmd, sizeof(cmd), - "TEARDOWN %s RTSP/1.0\r\n", - s->filename); - rtsp_send_cmd(s, cmd, reply, NULL); - - if (ff_rtsp_callback) { - ff_rtsp_callback(RTSP_ACTION_CLIENT_TEARDOWN, rt->session_id, - NULL, 0, NULL); - } - - for(i=0;inb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st) { - if (rtsp_st->ic) - av_close_input_file(rtsp_st->ic); - } - av_free(rtsp_st); - } - url_close(rt->rtsp_hd); - return 0; -} - -AVInputFormat rtsp_demux = { - "rtsp", - "RTSP input format", - sizeof(RTSPState), - rtsp_probe, - rtsp_read_header, - rtsp_read_packet, - rtsp_read_close, - .flags = AVFMT_NOFILE, -}; - -static int sdp_probe(AVProbeData *p1) -{ - const char *p; - - /* we look for a line beginning "c=IN IP4" */ - p = p1->buf; - while (*p != '\0') { - if (strstart(p, "c=IN IP4", NULL)) - return AVPROBE_SCORE_MAX / 2; - p = strchr(p, '\n'); - if (!p) - break; - p++; - if (*p == '\r') - p++; - } - return 0; -} - -#define SDP_MAX_SIZE 8192 - -static int sdp_read_header(AVFormatContext *s, - AVFormatParameters *ap) -{ - AVStream *st; - RTSPStream *rtsp_st; - int size, i, err; - char *content; - char url[1024]; - - /* read the whole sdp file */ - /* XXX: better loading */ - content = av_malloc(SDP_MAX_SIZE); - size = get_buffer(&s->pb, content, SDP_MAX_SIZE - 1); - if (size <= 0) { - av_free(content); - return AVERROR_INVALIDDATA; - } - content[size] ='\0'; - - sdp_parse(s, content); - av_free(content); - - /* open each RTP stream */ - for(i=0;inb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - - snprintf(url, sizeof(url), "rtp://%s:%d?multicast=1&ttl=%d", - inet_ntoa(rtsp_st->sdp_ip), - rtsp_st->sdp_port, - rtsp_st->sdp_ttl); - if (av_open_input_file(&rtsp_st->ic, url, &rtp_demux, 0, NULL) < 0) { - err = AVERROR_INVALIDDATA; - goto fail; - } - } - return 0; - fail: - for(i=0;inb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st) { - if (rtsp_st->ic) - av_close_input_file(rtsp_st->ic); - } - av_free(rtsp_st); - } - return err; -} - -static int sdp_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - return udp_read_packet(s, pkt); -} - -static int sdp_read_close(AVFormatContext *s) -{ - AVStream *st; - RTSPStream *rtsp_st; - int i; - - for(i=0;inb_streams;i++) { - st = s->streams[i]; - rtsp_st = st->priv_data; - if (rtsp_st) { - if (rtsp_st->ic) - av_close_input_file(rtsp_st->ic); - } - av_free(rtsp_st); - } - return 0; -} - - -static AVInputFormat sdp_demux = { - "sdp", - "SDP", - sizeof(RTSPState), - sdp_probe, - sdp_read_header, - sdp_read_packet, - sdp_read_close, -}; - - -/* dummy redirector format (used directly in av_open_input_file now) */ -static int redir_probe(AVProbeData *pd) -{ - const char *p; - p = pd->buf; - while (redir_isspace(*p)) - p++; - if (strstart(p, "http://", NULL) || - strstart(p, "rtsp://", NULL)) - return AVPROBE_SCORE_MAX; - return 0; -} - -/* called from utils.c */ -int redir_open(AVFormatContext **ic_ptr, ByteIOContext *f) -{ - char buf[4096], *q; - int c; - AVFormatContext *ic = NULL; - - /* parse each URL and try to open it */ - c = url_fgetc(f); - while (c != URL_EOF) { - /* skip spaces */ - for(;;) { - if (!redir_isspace(c)) - break; - c = url_fgetc(f); - } - if (c == URL_EOF) - break; - /* record url */ - q = buf; - for(;;) { - if (c == URL_EOF || redir_isspace(c)) - break; - if ((q - buf) < sizeof(buf) - 1) - *q++ = c; - c = url_fgetc(f); - } - *q = '\0'; - //printf("URL='%s'\n", buf); - /* try to open the media file */ - if (av_open_input_file(&ic, buf, NULL, 0, NULL) == 0) - break; - } - *ic_ptr = ic; - if (!ic) - return AVERROR_IO; - else - return 0; -} - -AVInputFormat redir_demux = { - "redir", - "Redirector format", - 0, - redir_probe, - NULL, - NULL, - NULL, -}; - -int rtsp_init(void) -{ - av_register_input_format(&rtsp_demux); - av_register_input_format(&redir_demux); - av_register_input_format(&sdp_demux); - return 0; -}