+++ /dev/null
-/*
- * 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 <unistd.h> /* for select() prototype */
-#include <sys/time.h>
-#include <netinet/in.h>
-#include <sys/socket.h>
-#ifndef __BEOS__
-# include <arpa/inet.h>
-#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: <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;
- }
-}
-
-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;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\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;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;
- 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;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;
-}
-
-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;
-}
projects / synfig.git / blobdiff