ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavformat/sdp.c

 /*
  * copyright (c) 2007 Luca Abeni
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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 2.1 of the License, or (at your option) any later version.
  *
@@ skipping 26 matching lines @@
     int sdp_version;      /**< protocol version (currently 0) */
     int id;               /**< session ID */
     int version;          /**< session version */
     int start_time;       /**< session start time (NTP time, in seconds),
                                or 0 in case of permanent session */
     int end_time;         /**< session end time (NTP time, in seconds),
                                or 0 if the session is not bounded */
     int ttl;              /**< TTL, in case of multicast stream */
     const char *user;     /**< username of the session's creator */
     const char *src_addr; /**< IP address of the machine from which the session was created */
+    const char *src_type; /**< address type of src_addr */
     const char *dst_addr; /**< destination IP address (can be multicast) */
+    const char *dst_type; /**< destination IP address type */
     const char *name;     /**< session name (can be an empty string) */
 };
 
-static void sdp_write_address(char *buff, int size, const char *dest_addr, int ttl)
+static void sdp_write_address(char *buff, int size, const char *dest_addr,
+                              const char *dest_type, int ttl)
 {
     if (dest_addr) {
+        if (!dest_type)
+            dest_type = "IP4";
         if (ttl > 0) {
-            av_strlcatf(buff, size, "c=IN IP4 %s/%d\r\n", dest_addr, ttl);
+            av_strlcatf(buff, size, "c=IN %s %s/%d\r\n", dest_type, dest_addr, ttl);
         } else {
-            av_strlcatf(buff, size, "c=IN IP4 %s\r\n", dest_addr);
+            av_strlcatf(buff, size, "c=IN %s %s\r\n", dest_type, dest_addr);
         }
     }
 }
 
 static void sdp_write_header(char *buff, int size, struct sdp_session_level *s)
 {
     av_strlcatf(buff, size, "v=%d\r\n"
-                            "o=- %d %d IN IP4 %s\r\n"
+                            "o=- %d %d IN %s %s\r\n"
                             "s=%s\r\n",
                             s->sdp_version,
-                            s->id, s->version, s->src_addr,
+                            s->id, s->version, s->src_type, s->src_addr,
                             s->name);
-    sdp_write_address(buff, size, s->dst_addr, s->ttl);
+    sdp_write_address(buff, size, s->dst_addr, s->dst_type, s->ttl);
     av_strlcatf(buff, size, "t=%d %d\r\n"
                             "a=tool:libavformat " AV_STRINGIFY(LIBAVFORMAT_VERSION) "\r\n",
                             s->start_time, s->end_time);
 }
 
 #if CONFIG_NETWORK
-static void resolve_destination(char *dest_addr, int size)
+static void resolve_destination(char *dest_addr, int size, char *type,
+                                int type_size)
 {
-    struct addrinfo hints, *ai, *cur;
+    struct addrinfo hints, *ai;
 
+    av_strlcpy(type, "IP4", type_size);
     if (!dest_addr[0])
         return;
 
     /* Resolve the destination, since it must be written
      * as a numeric IP address in the SDP. */
 
     memset(&hints, 0, sizeof(hints));
-    /* We only support IPv4 addresses in the SDP at the moment. */
-    hints.ai_family = AF_INET;
     if (getaddrinfo(dest_addr, NULL, &hints, &ai))
         return;
-    for (cur = ai; cur; cur = cur->ai_next) {
-        if (cur->ai_family == AF_INET) {
-            getnameinfo(cur->ai_addr, cur->ai_addrlen, dest_addr, size,
-                        NULL, 0, NI_NUMERICHOST);
-            break;
-        }
-    }
+    getnameinfo(ai->ai_addr, ai->ai_addrlen, dest_addr, size,
+                NULL, 0, NI_NUMERICHOST);
+    if (ai->ai_family == AF_INET6)
+        av_strlcpy(type, "IP6", type_size);
     freeaddrinfo(ai);
 }
 #else
-static void resolve_destination(char *dest_addr, int size)
+static void resolve_destination(char *dest_addr, int size, char *type,
+                                int type_size)
 {
 }
 #endif
 
 static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
 {
     int port;
     const char *p;
     char proto[32];
 
@@ skipping 147 matching lines @@
         goto xiph_fail;
 
     encoded_config = av_malloc(AV_BASE64_SIZE(config_len));
     if (!encoded_config) {
         av_free(config);
         goto xiph_fail;
     }
 
     config[0] = config[1] = config[2] = 0;
     config[3] = 1;
-    config[4] = 0xfe; // ident must match the one in rtpenc_xiph.c
-    config[5] = 0xcd;
-    config[6] = 0xba;
+    config[4] = (RTP_XIPH_IDENT >> 16) & 0xff;
+    config[5] = (RTP_XIPH_IDENT >>  8) & 0xff;
+    config[6] = (RTP_XIPH_IDENT      ) & 0xff;
     config[7] = (headers_len >> 8) & 0xff;
     config[8] = headers_len & 0xff;
     config[9] = 2;
     config[10] = header_len[0];
     config[11] = 0; // size of comment header; nonexistent
     memcpy(config + 12, header_start[0], header_len[0]);
     memcpy(config + 12 + header_len[0], header_start[2], header_len[2]);
 
     av_base64_encode(encoded_config, AV_BASE64_SIZE(config_len),
                      config, config_len);
@@ skipping 122 matching lines @@
             }
 
             av_strlcatf(buff, size, "a=rtpmap:%d theora/90000\r\n"
                                     "a=fmtp:%d delivery-method=inline; "
                                     "width=%d; height=%d; sampling=%s; "
                                     "configuration=%s\r\n",
                                     payload_type, payload_type,
                                     c->width, c->height, pix_fmt, config);
             break;
         }
+        case CODEC_ID_VP8:
+            av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
+                                     payload_type);
+            break;
         default:
             /* Nothing special to do here... */
             break;
     }
 
     av_free(config);
 
     return buff;
 }
 
-void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, int port, int ttl)
+void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl)
 {
     const char *type;
     int payload_type;
 
     payload_type = ff_rtp_get_payload_type(c);
     if (payload_type < 0) {
         payload_type = RTP_PT_PRIVATE + (c->codec_type == AVMEDIA_TYPE_AUDIO);
     }
 
     switch (c->codec_type) {
         case AVMEDIA_TYPE_VIDEO   : type = "video"      ; break;
         case AVMEDIA_TYPE_AUDIO   : type = "audio"      ; break;
         case AVMEDIA_TYPE_SUBTITLE: type = "text"       ; break;
         default                 : type = "application"; break;
     }
 
     av_strlcatf(buff, size, "m=%s %d RTP/AVP %d\r\n", type, port, payload_type);
-    sdp_write_address(buff, size, dest_addr, ttl);
+    sdp_write_address(buff, size, dest_addr, dest_type, ttl);
     if (c->bit_rate) {
         av_strlcatf(buff, size, "b=AS:%d\r\n", c->bit_rate / 1000);
     }
 
     sdp_write_media_attributes(buff, size, c, payload_type);
 }
 
 int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size)
 {
     AVMetadataTag *title = av_metadata_get(ac[0]->metadata, "title", NULL, 0);
     struct sdp_session_level s;
     int i, j, port, ttl;
-    char dst[32];
+    char dst[32], dst_type[5];
 
     memset(buff, 0, size);
     memset(&s, 0, sizeof(struct sdp_session_level));
     s.user = "-";
     s.src_addr = "127.0.0.1";    /* FIXME: Properly set this */
+    s.src_type = "IP4";
     s.name = title ? title->value : "No Name";
 
     port = 0;
     ttl = 0;
     if (n_files == 1) {
         port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->filename);
-        resolve_destination(dst, sizeof(dst));
+        resolve_destination(dst, sizeof(dst), dst_type, sizeof(dst_type));
         if (dst[0]) {
             s.dst_addr = dst;
+            s.dst_type = dst_type;
             s.ttl = ttl;
+            if (!strcmp(dst_type, "IP6")) {
+                s.src_addr = "::1";
+                s.src_type = "IP6";
+            }
         }
     }
     sdp_write_header(buff, size, &s);
 
     dst[0] = 0;
     for (i = 0; i < n_files; i++) {
         if (n_files != 1) {
             port = sdp_get_address(dst, sizeof(dst), &ttl, ac[i]->filename);
-            resolve_destination(dst, sizeof(dst));
+            resolve_destination(dst, sizeof(dst), dst_type, sizeof(dst_type));
         }
         for (j = 0; j < ac[i]->nb_streams; j++) {
             ff_sdp_write_media(buff, size,
                                   ac[i]->streams[j]->codec, dst[0] ? dst : NULL,
-                                  (port > 0) ? port + j * 2 : 0, ttl);
+                                  dst_type, (port > 0) ? port + j * 2 : 0, ttl);
             if (port <= 0) {
                 av_strlcatf(buff, size,
                                    "a=control:streamid=%d\r\n", i + j);
             }
         }
     }
 
     return 0;
 }
 #else
 int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size)
 {
     return AVERROR(ENOSYS);
 }
 
-void ff_sdp_write_media(char *buff, int size, AVCodecContext *c,
-                        const char *dest_addr, int port, int ttl)
+void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl)
 {
 }
 #endif