diff --git a/src/zm_sdp.c b/src/zm_sdp.c deleted file mode 100644 index e517b39bf..000000000 --- a/src/zm_sdp.c +++ /dev/null @@ -1,553 +0,0 @@ -#if 0 - -#include "config.h" - -#if HAVE_LIBAVFORMAT -#include "zm_ffmpeg.h" -#include "zm_sdp.h" - -// -// This file contains chunks of ffmpeg code that are not currently exported. -// The main thing we are after is the sdp parser -// - -#if HAVE_LIBAVUTIL_AVUTIL_H -#include -#elif HAVE_FFMPEG_AVUTIL_H -#include -#else -#error "No location for avstring.h found" -#endif - -#include -#include -#include -#include -#include - -// -// Part of libavformat/avformat.h that is usually obscured -// - -void ff_dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem); - -#ifdef __GNUC__ -#define dynarray_add(tab, nb_ptr, elem)\ -do {\ - typeof(tab) _tab = (tab);\ - typeof(elem) _elem = (elem);\ - (void)sizeof(**_tab == _elem); /* check that types are compatible */\ - ff_dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\ -} while(0) -#else -#define dynarray_add(tab, nb_ptr, elem)\ -do {\ - ff_dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\ -} while(0) -#endif - -time_t mktimegm(struct tm *tm); -struct tm *brktimegm(time_t secs, struct tm *tm); -const char *small_strptime(const char *p, const char *fmt, - struct tm *dt); - -struct in_addr; -int resolve_host(struct in_addr *sin_addr, const char *hostname); - -void url_split(char *proto, int proto_size, - char *authorization, int authorization_size, - char *hostname, int hostname_size, - int *port_ptr, - char *path, int path_size, - const char *url); - -// -// Part (well most really) of libavformat/rtsp.c -// - -typedef struct RTSPStream { - URLContext *rtp_handle; /* RTP stream handle */ - void *tx_ctx; /* RTP/RDT parse context */ - - int stream_index; /* corresponding stream index, if any. -1 if none (MPEG2TS case) */ - 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 */ - rtp_payload_data_t rtp_payload_data; /* rtp payload parsing infos from SDP */ - - RTPDynamicProtocolHandler *dynamic_handler; ///< Only valid if it's a dynamic protocol. (This is the handler structure) - PayloadContext *dynamic_protocol_context; ///< Only valid if it's a dynamic protocol. (This is any private data associated with the dynamic protocol) -} RTSPStream; - -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; - if (*p == '/') - p++; - 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, RTSPStream *rtsp_st, int payload_type, const char *p) -{ - char buf[256]; - int i; - AVCodec *c; - const char *c_name; - - /* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and - see if we can handle this kind of payload */ - get_word_sep(buf, sizeof(buf), "/", &p); - if (payload_type >= RTP_PT_PRIVATE) { - RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler; - while(handler) { - if (!strcmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) { - codec->codec_id = handler->codec_id; - rtsp_st->dynamic_handler= handler; - if(handler->open) { - rtsp_st->dynamic_protocol_context= handler->open(); - } - break; - } - handler= handler->next; - } - } else { - /* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */ - /* search into AVRtpPayloadTypes[] */ - codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type); - } - - c = avcodec_find_decoder(codec->codec_id); - if (c && c->name) - c_name = c->name; - else - c_name = (char *)NULL; - - if (c_name) { - get_word_sep(buf, sizeof(buf), "/", &p); - i = atoi(buf); - switch (codec->codec_type) { - case CODEC_TYPE_AUDIO: - av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name); - codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE; - codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS; - if (i > 0) { - codec->sample_rate = i; - get_word_sep(buf, sizeof(buf), "/", &p); - i = atoi(buf); - if (i > 0) - codec->channels = i; - // TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the - // frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm) - } - av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate); - av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels); - break; - case CODEC_TYPE_VIDEO: - av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name); - break; - default: - break; - } - return 0; - } - - 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_config(AVCodecContext *codec, char *attr, char *value) -{ - switch (codec->codec_id) { - case CODEC_ID_MPEG4: - case CODEC_ID_AAC: - if (!strcmp(attr, "config")) { - /* decode the hexa encoded parameter */ - int len = hex_to_data(NULL, value); - codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE); - if (!codec->extradata) - return; - codec->extradata_size = len; - hex_to_data(codec->extradata, value); - } - break; - default: - break; - } - return; -} - -typedef struct attrname_map -{ - const char *str; - uint16_t type; - uint32_t offset; -} attrname_map_t; - -/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */ -#define ATTR_NAME_TYPE_INT 0 -#define ATTR_NAME_TYPE_STR 1 -static const attrname_map_t attr_names[]= -{ - {"SizeLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, sizelength)}, - {"IndexLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, indexlength)}, - {"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, indexdeltalength)}, - {"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, profile_level_id)}, - {"StreamType", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, streamtype)}, - {"mode", ATTR_NAME_TYPE_STR, offsetof(rtp_payload_data_t, mode)}, - {NULL, -1, -1}, -}; - -/* parse a SDP line and save stream attributes */ -static void sdp_parse_fmtp(AVStream *st, const char *p) -{ - char attr[256]; - char value[4096]; - int i; - - RTSPStream *rtsp_st = st->priv_data; - AVCodecContext *codec = st->codec; - rtp_payload_data_t *rtp_payload_data = &rtsp_st->rtp_payload_data; - - /* loop on each attribute */ - while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value))) - { - /* grab the codec extra_data from the config parameter of the fmtp line */ - sdp_parse_fmtp_config(codec, attr, value); - /* Looking for a known attribute */ - for (i = 0; attr_names[i].str; ++i) { - if (!strcasecmp(attr, attr_names[i].str)) { - if (attr_names[i].type == ATTR_NAME_TYPE_INT) - *(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value); - else if (attr_names[i].type == ATTR_NAME_TYPE_STR) - *(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value); - } - } - } -} - -/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start - * and end time. - * Used for seeking in the rtp stream. - */ -static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end) -{ - char buf[256]; - - skip_spaces(&p); - if (!av_stristart(p, "npt=", &p)) - return; - - *start = AV_NOPTS_VALUE; - *end = AV_NOPTS_VALUE; - - get_word_sep(buf, sizeof(buf), "-", &p); - *start = parse_date(buf, 1); - if (*p == '-') { - p++; - get_word_sep(buf, sizeof(buf), "-", &p); - *end = parse_date(buf, 1); - } -// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start); -// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end); -} - -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) -{ - RTSPState *rt = s->priv_data; - char buf1[64], st_type[64]; - const char *p; - enum CodecType codec_type; - int 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': - av_strlcpy(s->title, p, sizeof(s->title)); - break; - case 'i': - if (s->nb_streams == 0) { - av_strlcpy(s->comment, p, sizeof(s->comment)); - 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; - rtsp_st->stream_index = -1; - dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st); - - rtsp_st->sdp_ip = s1->default_ip; - rtsp_st->sdp_ttl = s1->default_ttl; - - 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 (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) { - /* no corresponding stream */ - } else { - st = av_new_stream(s, 0); - if (!st) - return; - st->priv_data = rtsp_st; - rtsp_st->stream_index = st->index; - st->codec->codec_type = codec_type; - if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) { - /* 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 */ - av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url)); - break; - case 'a': - if (av_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, 0, NULL, NULL, 0, p); - if (proto[0] == '\0') { - /* relative control URL */ - av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url)); - av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url)); - } else { - av_strlcpy(rtsp_st->control_url, p, sizeof(rtsp_st->control_url)); - } - } else if (av_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, rtsp_st, payload_type, p); - } - } - } else if (av_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) { - if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) { - if(!rtsp_st->dynamic_handler->parse_sdp_a_line(st, rtsp_st->dynamic_protocol_context, buf)) { - sdp_parse_fmtp(st, p); - } - } else { - sdp_parse_fmtp(st, p); - } - } - } - } else if(av_strstart(p, "framesize:", &p)) { - // let dynamic protocol handlers have a stab at the line. - 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) { - if(rtsp_st->dynamic_handler && rtsp_st->dynamic_handler->parse_sdp_a_line) { - rtsp_st->dynamic_handler->parse_sdp_a_line(st, rtsp_st->dynamic_protocol_context, buf); - } - } - } - } else if(av_strstart(p, "range:", &p)) { - int64_t start, end; - - // this is so that seeking on a streamed file can work. - rtsp_parse_range_npt(p, &start, &end); - s->start_time= start; - s->duration= (end==AV_NOPTS_VALUE)?AV_NOPTS_VALUE:end-start; // AV_NOPTS_VALUE means live broadcast (and can't seek) - } else if (av_strstart(p, "IsRealDataType:integer;",&p)) { - if (atoi(p) == 1) - rt->transport = RTSP_TRANSPORT_RDT; - } else if (s->nb_streams > 0) { - rtsp_st = s->streams[s->nb_streams - 1]->priv_data; - if (rtsp_st->dynamic_handler && - rtsp_st->dynamic_handler->parse_sdp_a_line) - rtsp_st->dynamic_handler->parse_sdp_a_line(s->streams[s->nb_streams - 1], - rtsp_st->dynamic_protocol_context, buf); - } - break; - } -} - -int sdp_parse( AVFormatContext *s, const char *content ) -{ - const char *p; - int letter; - char buf[2048], *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; -} - -#endif // HAVE_LIBAVFORMAT -#endif