Removed from svn.
git-svn-id: http://svn.zoneminder.com/svn/zm/trunk@2767 e3e1d417-86f3-4887-817a-d78f3d33393f
This commit is contained in:
stan
parent
5506400519
commit
9690eb66fe
553
src/zm_sdp.c
553
src/zm_sdp.c
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@ -1,553 +0,0 @@
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#if 0
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#include "config.h"
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#if HAVE_LIBAVFORMAT
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#include "zm_ffmpeg.h"
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#include "zm_sdp.h"
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//
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// This file contains chunks of ffmpeg code that are not currently exported.
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// The main thing we are after is the sdp parser
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//
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#if HAVE_LIBAVUTIL_AVUTIL_H
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#include <libavutil/avstring.h>
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#elif HAVE_FFMPEG_AVUTIL_H
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#include <ffmpeg/avstring.h>
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#else
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#error "No location for avstring.h found"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <ctype.h>
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#include <arpa/inet.h>
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//
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// Part of libavformat/avformat.h that is usually obscured
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//
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void ff_dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem);
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#ifdef __GNUC__
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#define dynarray_add(tab, nb_ptr, elem)\
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do {\
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typeof(tab) _tab = (tab);\
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typeof(elem) _elem = (elem);\
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(void)sizeof(**_tab == _elem); /* check that types are compatible */\
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ff_dynarray_add((unsigned long **)_tab, nb_ptr, (unsigned long)_elem);\
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} while(0)
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#else
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#define dynarray_add(tab, nb_ptr, elem)\
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do {\
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ff_dynarray_add((unsigned long **)(tab), nb_ptr, (unsigned long)(elem));\
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} while(0)
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#endif
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time_t mktimegm(struct tm *tm);
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struct tm *brktimegm(time_t secs, struct tm *tm);
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const char *small_strptime(const char *p, const char *fmt,
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struct tm *dt);
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struct in_addr;
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int resolve_host(struct in_addr *sin_addr, const char *hostname);
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void url_split(char *proto, int proto_size,
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char *authorization, int authorization_size,
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char *hostname, int hostname_size,
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int *port_ptr,
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char *path, int path_size,
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const char *url);
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//
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// Part (well most really) of libavformat/rtsp.c
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//
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typedef struct RTSPStream {
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URLContext *rtp_handle; /* RTP stream handle */
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void *tx_ctx; /* RTP/RDT parse context */
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int stream_index; /* corresponding stream index, if any. -1 if none (MPEG2TS case) */
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int interleaved_min, interleaved_max; /* interleave ids, if TCP transport */
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char control_url[1024]; /* url for this stream (from SDP) */
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int sdp_port; /* port (from SDP content - not used in RTSP) */
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struct in_addr sdp_ip; /* IP address (from SDP content - not used in RTSP) */
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int sdp_ttl; /* IP TTL (from SDP content - not used in RTSP) */
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int sdp_payload_type; /* payload type - only used in SDP */
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rtp_payload_data_t rtp_payload_data; /* rtp payload parsing infos from SDP */
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RTPDynamicProtocolHandler *dynamic_handler; ///< Only valid if it's a dynamic protocol. (This is the handler structure)
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PayloadContext *dynamic_protocol_context; ///< Only valid if it's a dynamic protocol. (This is any private data associated with the dynamic protocol)
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} RTSPStream;
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static int redir_isspace(int c)
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{
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return c == ' ' || c == '\t' || c == '\n' || c == '\r';
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}
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static void skip_spaces(const char **pp)
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{
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const char *p;
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p = *pp;
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while (redir_isspace(*p))
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p++;
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*pp = p;
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}
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static void get_word_sep(char *buf, int buf_size, const char *sep,
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const char **pp)
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{
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const char *p;
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char *q;
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p = *pp;
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if (*p == '/')
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p++;
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skip_spaces(&p);
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q = buf;
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while (!strchr(sep, *p) && *p != '\0') {
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if ((q - buf) < buf_size - 1)
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*q++ = *p;
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p++;
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}
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if (buf_size > 0)
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*q = '\0';
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*pp = p;
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}
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static void get_word(char *buf, int buf_size, const char **pp)
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{
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const char *p;
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char *q;
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p = *pp;
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skip_spaces(&p);
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q = buf;
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while (!redir_isspace(*p) && *p != '\0') {
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if ((q - buf) < buf_size - 1)
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*q++ = *p;
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p++;
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}
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if (buf_size > 0)
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*q = '\0';
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*pp = p;
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}
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/* parse the rtpmap description: <codec_name>/<clock_rate>[/<other
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params>] */
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static int sdp_parse_rtpmap(AVCodecContext *codec, RTSPStream *rtsp_st, int payload_type, const char *p)
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{
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char buf[256];
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int i;
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AVCodec *c;
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const char *c_name;
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/* Loop into AVRtpDynamicPayloadTypes[] and AVRtpPayloadTypes[] and
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see if we can handle this kind of payload */
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get_word_sep(buf, sizeof(buf), "/", &p);
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if (payload_type >= RTP_PT_PRIVATE) {
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RTPDynamicProtocolHandler *handler= RTPFirstDynamicPayloadHandler;
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while(handler) {
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if (!strcmp(buf, handler->enc_name) && (codec->codec_type == handler->codec_type)) {
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codec->codec_id = handler->codec_id;
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rtsp_st->dynamic_handler= handler;
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if(handler->open) {
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rtsp_st->dynamic_protocol_context= handler->open();
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}
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break;
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}
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handler= handler->next;
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}
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} else {
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/* We are in a standard case ( from http://www.iana.org/assignments/rtp-parameters) */
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/* search into AVRtpPayloadTypes[] */
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codec->codec_id = ff_rtp_codec_id(buf, codec->codec_type);
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}
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c = avcodec_find_decoder(codec->codec_id);
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if (c && c->name)
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c_name = c->name;
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else
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c_name = (char *)NULL;
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if (c_name) {
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get_word_sep(buf, sizeof(buf), "/", &p);
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i = atoi(buf);
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switch (codec->codec_type) {
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case CODEC_TYPE_AUDIO:
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av_log(codec, AV_LOG_DEBUG, " audio codec set to : %s\n", c_name);
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codec->sample_rate = RTSP_DEFAULT_AUDIO_SAMPLERATE;
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codec->channels = RTSP_DEFAULT_NB_AUDIO_CHANNELS;
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if (i > 0) {
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codec->sample_rate = i;
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get_word_sep(buf, sizeof(buf), "/", &p);
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i = atoi(buf);
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if (i > 0)
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codec->channels = i;
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// TODO: there is a bug here; if it is a mono stream, and less than 22000Hz, faad upconverts to stereo and twice the
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// frequency. No problem, but the sample rate is being set here by the sdp line. Upcoming patch forthcoming. (rdm)
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}
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av_log(codec, AV_LOG_DEBUG, " audio samplerate set to : %i\n", codec->sample_rate);
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av_log(codec, AV_LOG_DEBUG, " audio channels set to : %i\n", codec->channels);
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break;
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case CODEC_TYPE_VIDEO:
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av_log(codec, AV_LOG_DEBUG, " video codec set to : %s\n", c_name);
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break;
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default:
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break;
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}
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return 0;
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}
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return -1;
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}
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/* return the length and optionnaly the data */
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static int hex_to_data(uint8_t *data, const char *p)
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{
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int c, len, v;
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len = 0;
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v = 1;
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for(;;) {
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skip_spaces(&p);
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if (p == '\0')
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break;
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c = toupper((unsigned char)*p++);
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if (c >= '0' && c <= '9')
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c = c - '0';
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else if (c >= 'A' && c <= 'F')
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c = c - 'A' + 10;
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else
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break;
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v = (v << 4) | c;
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if (v & 0x100) {
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if (data)
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data[len] = v;
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len++;
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v = 1;
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}
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}
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return len;
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}
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static void sdp_parse_fmtp_config(AVCodecContext *codec, char *attr, char *value)
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{
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switch (codec->codec_id) {
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case CODEC_ID_MPEG4:
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case CODEC_ID_AAC:
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if (!strcmp(attr, "config")) {
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/* decode the hexa encoded parameter */
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int len = hex_to_data(NULL, value);
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codec->extradata = av_mallocz(len + FF_INPUT_BUFFER_PADDING_SIZE);
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if (!codec->extradata)
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return;
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codec->extradata_size = len;
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hex_to_data(codec->extradata, value);
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}
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break;
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default:
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break;
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}
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return;
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}
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typedef struct attrname_map
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{
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const char *str;
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uint16_t type;
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uint32_t offset;
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} attrname_map_t;
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/* All known fmtp parmeters and the corresping RTPAttrTypeEnum */
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#define ATTR_NAME_TYPE_INT 0
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#define ATTR_NAME_TYPE_STR 1
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static const attrname_map_t attr_names[]=
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{
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{"SizeLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, sizelength)},
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{"IndexLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, indexlength)},
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{"IndexDeltaLength", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, indexdeltalength)},
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{"profile-level-id", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, profile_level_id)},
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{"StreamType", ATTR_NAME_TYPE_INT, offsetof(rtp_payload_data_t, streamtype)},
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{"mode", ATTR_NAME_TYPE_STR, offsetof(rtp_payload_data_t, mode)},
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{NULL, -1, -1},
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};
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/* parse a SDP line and save stream attributes */
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static void sdp_parse_fmtp(AVStream *st, const char *p)
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{
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char attr[256];
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char value[4096];
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int i;
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RTSPStream *rtsp_st = st->priv_data;
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AVCodecContext *codec = st->codec;
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rtp_payload_data_t *rtp_payload_data = &rtsp_st->rtp_payload_data;
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/* loop on each attribute */
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while(rtsp_next_attr_and_value(&p, attr, sizeof(attr), value, sizeof(value)))
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{
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/* grab the codec extra_data from the config parameter of the fmtp line */
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sdp_parse_fmtp_config(codec, attr, value);
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/* Looking for a known attribute */
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for (i = 0; attr_names[i].str; ++i) {
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if (!strcasecmp(attr, attr_names[i].str)) {
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if (attr_names[i].type == ATTR_NAME_TYPE_INT)
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*(int *)((char *)rtp_payload_data + attr_names[i].offset) = atoi(value);
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else if (attr_names[i].type == ATTR_NAME_TYPE_STR)
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*(char **)((char *)rtp_payload_data + attr_names[i].offset) = av_strdup(value);
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}
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}
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}
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}
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/** Parse a string \p in the form of Range:npt=xx-xx, and determine the start
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* and end time.
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* Used for seeking in the rtp stream.
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*/
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static void rtsp_parse_range_npt(const char *p, int64_t *start, int64_t *end)
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{
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char buf[256];
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skip_spaces(&p);
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if (!av_stristart(p, "npt=", &p))
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return;
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*start = AV_NOPTS_VALUE;
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*end = AV_NOPTS_VALUE;
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get_word_sep(buf, sizeof(buf), "-", &p);
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*start = parse_date(buf, 1);
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if (*p == '-') {
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p++;
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get_word_sep(buf, sizeof(buf), "-", &p);
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*end = parse_date(buf, 1);
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}
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// av_log(NULL, AV_LOG_DEBUG, "Range Start: %lld\n", *start);
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// av_log(NULL, AV_LOG_DEBUG, "Range End: %lld\n", *end);
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}
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typedef struct SDPParseState {
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/* SDP only */
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struct in_addr default_ip;
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int default_ttl;
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} SDPParseState;
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static void sdp_parse_line(AVFormatContext *s, SDPParseState *s1,
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int letter, const char *buf)
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{
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RTSPState *rt = s->priv_data;
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char buf1[64], st_type[64];
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const char *p;
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enum CodecType codec_type;
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int payload_type, i;
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AVStream *st;
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RTSPStream *rtsp_st;
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struct in_addr sdp_ip;
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int ttl;
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#ifdef DEBUG
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printf("sdp: %c='%s'\n", letter, buf);
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#endif
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p = buf;
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switch(letter) {
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case 'c':
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get_word(buf1, sizeof(buf1), &p);
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if (strcmp(buf1, "IN") != 0)
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return;
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get_word(buf1, sizeof(buf1), &p);
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if (strcmp(buf1, "IP4") != 0)
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return;
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get_word_sep(buf1, sizeof(buf1), "/", &p);
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if (inet_aton(buf1, &sdp_ip) == 0)
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return;
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ttl = 16;
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if (*p == '/') {
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p++;
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get_word_sep(buf1, sizeof(buf1), "/", &p);
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ttl = atoi(buf1);
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}
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if (s->nb_streams == 0) {
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s1->default_ip = sdp_ip;
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s1->default_ttl = ttl;
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} else {
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st = s->streams[s->nb_streams - 1];
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rtsp_st = st->priv_data;
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rtsp_st->sdp_ip = sdp_ip;
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rtsp_st->sdp_ttl = ttl;
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}
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break;
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case 's':
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av_strlcpy(s->title, p, sizeof(s->title));
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break;
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case 'i':
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if (s->nb_streams == 0) {
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av_strlcpy(s->comment, p, sizeof(s->comment));
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break;
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}
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break;
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case 'm':
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/* new stream */
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get_word(st_type, sizeof(st_type), &p);
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if (!strcmp(st_type, "audio")) {
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codec_type = CODEC_TYPE_AUDIO;
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} else if (!strcmp(st_type, "video")) {
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codec_type = CODEC_TYPE_VIDEO;
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} else {
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return;
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}
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rtsp_st = av_mallocz(sizeof(RTSPStream));
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if (!rtsp_st)
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return;
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rtsp_st->stream_index = -1;
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dynarray_add(&rt->rtsp_streams, &rt->nb_rtsp_streams, rtsp_st);
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rtsp_st->sdp_ip = s1->default_ip;
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rtsp_st->sdp_ttl = s1->default_ttl;
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get_word(buf1, sizeof(buf1), &p); /* port */
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rtsp_st->sdp_port = atoi(buf1);
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get_word(buf1, sizeof(buf1), &p); /* protocol (ignored) */
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/* XXX: handle list of formats */
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get_word(buf1, sizeof(buf1), &p); /* format list */
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rtsp_st->sdp_payload_type = atoi(buf1);
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if (!strcmp(ff_rtp_enc_name(rtsp_st->sdp_payload_type), "MP2T")) {
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/* no corresponding stream */
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} else {
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st = av_new_stream(s, 0);
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if (!st)
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return;
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st->priv_data = rtsp_st;
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rtsp_st->stream_index = st->index;
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st->codec->codec_type = codec_type;
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if (rtsp_st->sdp_payload_type < RTP_PT_PRIVATE) {
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/* if standard payload type, we can find the codec right now */
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rtp_get_codec_info(st->codec, rtsp_st->sdp_payload_type);
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}
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}
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/* put a default control url */
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av_strlcpy(rtsp_st->control_url, s->filename, sizeof(rtsp_st->control_url));
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break;
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case 'a':
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if (av_strstart(p, "control:", &p) && s->nb_streams > 0) {
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char proto[32];
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/* get the control url */
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st = s->streams[s->nb_streams - 1];
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rtsp_st = st->priv_data;
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/* XXX: may need to add full url resolution */
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url_split(proto, sizeof(proto), NULL, 0, NULL, 0, NULL, NULL, 0, p);
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if (proto[0] == '\0') {
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/* relative control URL */
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av_strlcat(rtsp_st->control_url, "/", sizeof(rtsp_st->control_url));
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av_strlcat(rtsp_st->control_url, p, sizeof(rtsp_st->control_url));
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} 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
|
||||
Loading…
Reference in New Issue