renamed libav to libavformat

Originally committed as revision 1276 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 0 insertions, 1163 deletions

diff --git a/libav/rtsp.c b/libav/rtsp.c
deleted file mode 100644
index c173cb89b7..0000000000
--- a/libav/rtsp.c
+++ /dev/null
@@ -1,1163 +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 <sys/time.h>
-#include <netinet/in.h>
-#include <sys/socket.h>
-#include <ctype.h>
-#ifndef __BEOS__
-# include <arpa/inet.h>
-#else
-# include "barpainet.h"
-#endif
-
-//#define DEBUG
-
-typedef struct RTSPState {
-    URLContext *rtsp_hd; /* RTSP TCP connexion handle */
-    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;
-
-/* suppress this hack */
-int rtsp_abort_req = 0;
-
-/* XXX: currently, the only way to change the protocols consists in
-   changing this variable */
-int rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP) | (1 << RTSP_PROTOCOL_RTP_UDP) | (1 << RTSP_PROTOCOL_RTP_UDP_MULTICAST);
-
-/* 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: <codec_name>/<clock_rate>[/<other
-   params>] */
-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;
-    }
-}
-
-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 != '\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 == '/') {
-            get_word_sep(lower_transport, sizeof(lower_transport), 
-                         ";,", &p);
-        }
-        if (!strcmp(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);
-    }
-}
-
-
-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\n", rt->seq);
-    pstrcat(buf, sizeof(buf), buf1);
-    if (rt->session_id[0] != '\0' && !strstr(cmd, "\nIf-Match:")) {
-        snprintf(buf1, sizeof(buf1), "Session: %s\n", rt->session_id);
-        pstrcat(buf, sizeof(buf), buf1);
-    }
-    pstrcat(buf, sizeof(buf), "\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) == 0)
-                break;
-            if (ch == '\n')
-                break;
-            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;
-
-    rtsp_abort_req = 0;
-    
-    /* 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\n"
-             "Accept: application/sdp\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;i<s->nb_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\n"
-                 "Transport: %s\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\n",
-             s->filename);
-    rtsp_send_cmd(s, cmd, reply, NULL);
-    if (reply->status_code != RTSP_STATUS_OK) {
-        err = AVERROR_INVALIDDATA;
-        goto fail;
-    }
-
-    /* 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;
-        }
-    }
-
-    return 0;
- fail:
-    for(i=0;i<s->nb_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;
-    ByteIOContext *rtsp_gb = &rt->rtsp_gb;
-    int c, id, len, i, ret;
-    AVStream *st;
-    RTSPStream *rtsp_st;
-    char buf[RTP_MAX_PACKET_LENGTH];
-
- redo:
-    for(;;) {
-        c = url_fgetc(rtsp_gb);
-        if (c == URL_EOF)
-            return AVERROR_IO;
-        if (c == '$')
-            break;
-    }
-    id = get_byte(rtsp_gb);
-    len = get_be16(rtsp_gb);
-    if (len > RTP_MAX_PACKET_LENGTH || len < 12)
-        goto redo;
-    /* get the data */
-    get_buffer(rtsp_gb, buf, len);
-    
-    /* find the matching stream */
-    for(i = 0; i < s->nb_streams; i++) {
-        st = s->streams[i];
-        rtsp_st = st->priv_data;
-        if (i >= rtsp_st->interleaved_min && 
-            i <= 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 (rtsp_abort_req)
-            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 = 500000;
-        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;
-}
-
-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];
-
-    /* NOTE: it is valid to flush the buffer here */
-    if (rt->protocol == RTSP_PROTOCOL_RTP_TCP) {
-        url_fclose(&rt->rtsp_gb);
-    }
-
-    snprintf(cmd, sizeof(cmd), 
-             "TEARDOWN %s RTSP/1.0\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;i<s->nb_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;
-}
-
-static 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;i<s->nb_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;i<s->nb_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;i<s->nb_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;
-}