chasing indexing error

1 files changed, 0 insertions, 713 deletions

diff --git a/ffmpeg/libavformat/sdp.c b/ffmpeg/libavformat/sdp.c
deleted file mode 100644
index 55ea0d9..0000000
--- a/ffmpeg/libavformat/sdp.c
+++ /dev/null
@@ -1,713 +0,0 @@
-/*
- * 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.
- *
- * FFmpeg 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <string.h>
-#include "libavutil/avstring.h"
-#include "libavutil/base64.h"
-#include "libavutil/dict.h"
-#include "libavutil/parseutils.h"
-#include "libavutil/opt.h"
-#include "libavcodec/xiph.h"
-#include "libavcodec/mpeg4audio.h"
-#include "avformat.h"
-#include "internal.h"
-#include "avc.h"
-#include "rtp.h"
-#if CONFIG_NETWORK
-#include "network.h"
-#endif
-
-#if CONFIG_RTP_MUXER
-#define MAX_EXTRADATA_SIZE ((INT_MAX - 10) / 2)
-
-struct sdp_session_level {
-    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,
-                              const char *dest_type, int ttl)
-{
-    if (dest_addr) {
-        if (!dest_type)
-            dest_type = "IP4";
-        if (ttl > 0 && !strcmp(dest_type, "IP4")) {
-            /* The TTL should only be specified for IPv4 multicast addresses,
-             * not for IPv6. */
-            av_strlcatf(buff, size, "c=IN %s %s/%d\r\n", dest_type, dest_addr, ttl);
-        } else {
-            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 %s %s\r\n"
-                            "s=%s\r\n",
-                            s->sdp_version,
-                            s->id, s->version, s->src_type, s->src_addr,
-                            s->name);
-    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 int resolve_destination(char *dest_addr, int size, char *type,
-                               int type_size)
-{
-    struct addrinfo hints = { 0 }, *ai;
-    int is_multicast;
-
-    av_strlcpy(type, "IP4", type_size);
-    if (!dest_addr[0])
-        return 0;
-
-    /* Resolve the destination, since it must be written
-     * as a numeric IP address in the SDP. */
-
-    if (getaddrinfo(dest_addr, NULL, &hints, &ai))
-        return 0;
-    getnameinfo(ai->ai_addr, ai->ai_addrlen, dest_addr, size,
-                NULL, 0, NI_NUMERICHOST);
-#ifdef AF_INET6
-    if (ai->ai_family == AF_INET6)
-        av_strlcpy(type, "IP6", type_size);
-#endif
-    is_multicast = ff_is_multicast_address(ai->ai_addr);
-    freeaddrinfo(ai);
-    return is_multicast;
-}
-#else
-static int resolve_destination(char *dest_addr, int size, char *type,
-                               int type_size)
-{
-    return 0;
-}
-#endif
-
-static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
-{
-    int port;
-    const char *p;
-    char proto[32];
-
-    av_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url);
-
-    *ttl = 0;
-
-    if (strcmp(proto, "rtp") && strcmp(proto, "srtp")) {
-        /* The url isn't for the actual rtp sessions,
-         * don't parse out anything else than the destination.
-         */
-        return 0;
-    }
-
-    p = strchr(url, '?');
-    if (p) {
-        char buff[64];
-
-        if (av_find_info_tag(buff, sizeof(buff), "ttl", p)) {
-            *ttl = strtol(buff, NULL, 10);
-        } else {
-            *ttl = 5;
-        }
-    }
-
-    return port;
-}
-
-#define MAX_PSET_SIZE 1024
-static char *extradata2psets(AVCodecContext *c)
-{
-    char *psets, *p;
-    const uint8_t *r;
-    static const char pset_string[] = "; sprop-parameter-sets=";
-    static const char profile_string[] = "; profile-level-id=";
-    uint8_t *orig_extradata = NULL;
-    int orig_extradata_size = 0;
-    const uint8_t *sps = NULL, *sps_end;
-
-    if (c->extradata_size > MAX_EXTRADATA_SIZE) {
-        av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
-
-        return NULL;
-    }
-    if (c->extradata[0] == 1) {
-        uint8_t *dummy_p;
-        int dummy_int;
-        AVBitStreamFilterContext *bsfc= av_bitstream_filter_init("h264_mp4toannexb");
-
-        if (!bsfc) {
-            av_log(c, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n");
-
-            return NULL;
-        }
-
-        orig_extradata_size = c->extradata_size;
-        orig_extradata = av_mallocz(orig_extradata_size +
-                                    FF_INPUT_BUFFER_PADDING_SIZE);
-        if (!orig_extradata) {
-            av_bitstream_filter_close(bsfc);
-            return NULL;
-        }
-        memcpy(orig_extradata, c->extradata, orig_extradata_size);
-        av_bitstream_filter_filter(bsfc, c, NULL, &dummy_p, &dummy_int, NULL, 0, 0);
-        av_bitstream_filter_close(bsfc);
-    }
-
-    psets = av_mallocz(MAX_PSET_SIZE);
-    if (psets == NULL) {
-        av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
-        av_free(orig_extradata);
-        return NULL;
-    }
-    memcpy(psets, pset_string, strlen(pset_string));
-    p = psets + strlen(pset_string);
-    r = ff_avc_find_startcode(c->extradata, c->extradata + c->extradata_size);
-    while (r < c->extradata + c->extradata_size) {
-        const uint8_t *r1;
-        uint8_t nal_type;
-
-        while (!*(r++));
-        nal_type = *r & 0x1f;
-        r1 = ff_avc_find_startcode(r, c->extradata + c->extradata_size);
-        if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
-            r = r1;
-            continue;
-        }
-        if (p != (psets + strlen(pset_string))) {
-            *p = ',';
-            p++;
-        }
-        if (!sps) {
-            sps = r;
-            sps_end = r1;
-        }
-        if (av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r) == NULL) {
-            av_log(c, AV_LOG_ERROR, "Cannot Base64-encode %td %td!\n", MAX_PSET_SIZE - (p - psets), r1 - r);
-            av_free(psets);
-
-            return NULL;
-        }
-        p += strlen(p);
-        r = r1;
-    }
-    if (sps && sps_end - sps >= 4) {
-        memcpy(p, profile_string, strlen(profile_string));
-        p += strlen(p);
-        ff_data_to_hex(p, sps + 1, 3, 0);
-        p[6] = '\0';
-    }
-    if (orig_extradata) {
-        av_free(c->extradata);
-        c->extradata      = orig_extradata;
-        c->extradata_size = orig_extradata_size;
-    }
-
-    return psets;
-}
-
-static char *extradata2config(AVCodecContext *c)
-{
-    char *config;
-
-    if (c->extradata_size > MAX_EXTRADATA_SIZE) {
-        av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
-
-        return NULL;
-    }
-    config = av_malloc(10 + c->extradata_size * 2);
-    if (config == NULL) {
-        av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
-        return NULL;
-    }
-    memcpy(config, "; config=", 9);
-    ff_data_to_hex(config + 9, c->extradata, c->extradata_size, 0);
-    config[9 + c->extradata_size * 2] = 0;
-
-    return config;
-}
-
-static char *xiph_extradata2config(AVCodecContext *c)
-{
-    char *config, *encoded_config;
-    uint8_t *header_start[3];
-    int headers_len, header_len[3], config_len;
-    int first_header_size;
-
-    switch (c->codec_id) {
-    case AV_CODEC_ID_THEORA:
-        first_header_size = 42;
-        break;
-    case AV_CODEC_ID_VORBIS:
-        first_header_size = 30;
-        break;
-    default:
-        av_log(c, AV_LOG_ERROR, "Unsupported Xiph codec ID\n");
-        return NULL;
-    }
-
-    if (avpriv_split_xiph_headers(c->extradata, c->extradata_size,
-                              first_header_size, header_start,
-                              header_len) < 0) {
-        av_log(c, AV_LOG_ERROR, "Extradata corrupt.\n");
-        return NULL;
-    }
-
-    headers_len = header_len[0] + header_len[2];
-    config_len = 4 +          // count
-                 3 +          // ident
-                 2 +          // packet size
-                 1 +          // header count
-                 2 +          // header size
-                 headers_len; // and the rest
-
-    config = av_malloc(config_len);
-    if (!config)
-        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] = (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);
-    av_free(config);
-
-    return encoded_config;
-
-xiph_fail:
-    av_log(c, AV_LOG_ERROR,
-           "Not enough memory for configuration string\n");
-    return NULL;
-}
-
-static int latm_context2profilelevel(AVCodecContext *c)
-{
-    /* MP4A-LATM
-     * The RTP payload format specification is described in RFC 3016
-     * The encoding specifications are provided in ISO/IEC 14496-3 */
-
-    int profile_level = 0x2B;
-
-    /* TODO: AAC Profile only supports AAC LC Object Type.
-     * Different Object Types should implement different Profile Levels */
-
-    if (c->sample_rate <= 24000) {
-        if (c->channels <= 2)
-            profile_level = 0x28; // AAC Profile, Level 1
-    } else if (c->sample_rate <= 48000) {
-        if (c->channels <= 2) {
-            profile_level = 0x29; // AAC Profile, Level 2
-        } else if (c->channels <= 5) {
-            profile_level = 0x2A; // AAC Profile, Level 4
-        }
-    } else if (c->sample_rate <= 96000) {
-        if (c->channels <= 5) {
-            profile_level = 0x2B; // AAC Profile, Level 5
-        }
-    }
-
-    return profile_level;
-}
-
-static char *latm_context2config(AVCodecContext *c)
-{
-    /* MP4A-LATM
-     * The RTP payload format specification is described in RFC 3016
-     * The encoding specifications are provided in ISO/IEC 14496-3 */
-
-    uint8_t config_byte[6];
-    int rate_index;
-    char *config;
-
-    for (rate_index = 0; rate_index < 16; rate_index++)
-        if (avpriv_mpeg4audio_sample_rates[rate_index] == c->sample_rate)
-            break;
-    if (rate_index == 16) {
-        av_log(c, AV_LOG_ERROR, "Unsupported sample rate\n");
-        return NULL;
-    }
-
-    config_byte[0] = 0x40;
-    config_byte[1] = 0;
-    config_byte[2] = 0x20 | rate_index;
-    config_byte[3] = c->channels << 4;
-    config_byte[4] = 0x3f;
-    config_byte[5] = 0xc0;
-
-    config = av_malloc(6*2+1);
-    if (!config) {
-        av_log(c, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
-        return NULL;
-    }
-    ff_data_to_hex(config, config_byte, 6, 1);
-    config[12] = 0;
-
-    return config;
-}
-
-static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type, AVFormatContext *fmt)
-{
-    char *config = NULL;
-
-    switch (c->codec_id) {
-        case AV_CODEC_ID_H264: {
-            int mode = 1;
-            if (fmt && fmt->oformat->priv_class &&
-                av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0"))
-                mode = 0;
-            if (c->extradata_size) {
-                config = extradata2psets(c);
-            }
-            av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n"
-                                    "a=fmtp:%d packetization-mode=%d%s\r\n",
-                                     payload_type,
-                                     payload_type, mode, config ? config : "");
-            break;
-        }
-        case AV_CODEC_ID_H263:
-        case AV_CODEC_ID_H263P:
-            /* a=framesize is required by 3GPP TS 26.234 (PSS). It
-             * actually specifies the maximum video size, but we only know
-             * the current size. This is required for playback on Android
-             * stagefright and on Samsung bada. */
-            if (!fmt || !fmt->oformat->priv_class ||
-                !av_opt_flag_is_set(fmt->priv_data, "rtpflags", "rfc2190") ||
-                c->codec_id == AV_CODEC_ID_H263P)
-            av_strlcatf(buff, size, "a=rtpmap:%d H263-2000/90000\r\n"
-                                    "a=framesize:%d %d-%d\r\n",
-                                    payload_type,
-                                    payload_type, c->width, c->height);
-            break;
-        case AV_CODEC_ID_MPEG4:
-            if (c->extradata_size) {
-                config = extradata2config(c);
-            }
-            av_strlcatf(buff, size, "a=rtpmap:%d MP4V-ES/90000\r\n"
-                                    "a=fmtp:%d profile-level-id=1%s\r\n",
-                                     payload_type,
-                                     payload_type, config ? config : "");
-            break;
-        case AV_CODEC_ID_AAC:
-            if (fmt && fmt->oformat && fmt->oformat->priv_class &&
-                av_opt_flag_is_set(fmt->priv_data, "rtpflags", "latm")) {
-                config = latm_context2config(c);
-                if (!config)
-                    return NULL;
-                av_strlcatf(buff, size, "a=rtpmap:%d MP4A-LATM/%d/%d\r\n"
-                                        "a=fmtp:%d profile-level-id=%d;cpresent=0;config=%s\r\n",
-                                         payload_type, c->sample_rate, c->channels,
-                                         payload_type, latm_context2profilelevel(c), config);
-            } else {
-                if (c->extradata_size) {
-                    config = extradata2config(c);
-                } else {
-                    /* FIXME: maybe we can forge config information based on the
-                     *        codec parameters...
-                     */
-                    av_log(c, AV_LOG_ERROR, "AAC with no global headers is currently not supported.\n");
-                    return NULL;
-                }
-                if (config == NULL) {
-                    return NULL;
-                }
-                av_strlcatf(buff, size, "a=rtpmap:%d MPEG4-GENERIC/%d/%d\r\n"
-                                        "a=fmtp:%d profile-level-id=1;"
-                                        "mode=AAC-hbr;sizelength=13;indexlength=3;"
-                                        "indexdeltalength=3%s\r\n",
-                                         payload_type, c->sample_rate, c->channels,
-                                         payload_type, config);
-            }
-            break;
-        case AV_CODEC_ID_PCM_S16BE:
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d L16/%d/%d\r\n",
-                                         payload_type,
-                                         c->sample_rate, c->channels);
-            break;
-        case AV_CODEC_ID_PCM_MULAW:
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d PCMU/%d/%d\r\n",
-                                         payload_type,
-                                         c->sample_rate, c->channels);
-            break;
-        case AV_CODEC_ID_PCM_ALAW:
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d PCMA/%d/%d\r\n",
-                                         payload_type,
-                                         c->sample_rate, c->channels);
-            break;
-        case AV_CODEC_ID_AMR_NB:
-            av_strlcatf(buff, size, "a=rtpmap:%d AMR/%d/%d\r\n"
-                                    "a=fmtp:%d octet-align=1\r\n",
-                                     payload_type, c->sample_rate, c->channels,
-                                     payload_type);
-            break;
-        case AV_CODEC_ID_AMR_WB:
-            av_strlcatf(buff, size, "a=rtpmap:%d AMR-WB/%d/%d\r\n"
-                                    "a=fmtp:%d octet-align=1\r\n",
-                                     payload_type, c->sample_rate, c->channels,
-                                     payload_type);
-            break;
-        case AV_CODEC_ID_VORBIS:
-            if (c->extradata_size)
-                config = xiph_extradata2config(c);
-            else
-                av_log(c, AV_LOG_ERROR, "Vorbis configuration info missing\n");
-            if (!config)
-                return NULL;
-
-            av_strlcatf(buff, size, "a=rtpmap:%d vorbis/%d/%d\r\n"
-                                    "a=fmtp:%d configuration=%s\r\n",
-                                    payload_type, c->sample_rate, c->channels,
-                                    payload_type, config);
-            break;
-        case AV_CODEC_ID_THEORA: {
-            const char *pix_fmt;
-            switch (c->pix_fmt) {
-            case AV_PIX_FMT_YUV420P:
-                pix_fmt = "YCbCr-4:2:0";
-                break;
-            case AV_PIX_FMT_YUV422P:
-                pix_fmt = "YCbCr-4:2:2";
-                break;
-            case AV_PIX_FMT_YUV444P:
-                pix_fmt = "YCbCr-4:4:4";
-                break;
-            default:
-                av_log(c, AV_LOG_ERROR, "Unsupported pixel format.\n");
-                return NULL;
-            }
-
-            if (c->extradata_size)
-                config = xiph_extradata2config(c);
-            else
-                av_log(c, AV_LOG_ERROR, "Theora configuation info missing\n");
-            if (!config)
-                return NULL;
-
-            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 AV_CODEC_ID_VP8:
-            av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
-                                     payload_type);
-            break;
-        case AV_CODEC_ID_MJPEG:
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d JPEG/90000\r\n",
-                                         payload_type);
-            break;
-        case AV_CODEC_ID_ADPCM_G722:
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d G722/%d/%d\r\n",
-                                         payload_type,
-                                         8000, c->channels);
-            break;
-        case AV_CODEC_ID_ADPCM_G726: {
-            if (payload_type >= RTP_PT_PRIVATE)
-                av_strlcatf(buff, size, "a=rtpmap:%d G726-%d/%d\r\n",
-                                         payload_type,
-                                         c->bits_per_coded_sample*8,
-                                         c->sample_rate);
-            break;
-        }
-        case AV_CODEC_ID_ILBC:
-            av_strlcatf(buff, size, "a=rtpmap:%d iLBC/%d\r\n"
-                                    "a=fmtp:%d mode=%d\r\n",
-                                     payload_type, c->sample_rate,
-                                     payload_type, c->block_align == 38 ? 20 : 30);
-            break;
-        case AV_CODEC_ID_SPEEX:
-            av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n",
-                                     payload_type, c->sample_rate);
-            if (c->codec) {
-                const char *mode;
-                uint64_t vad_option;
-
-                if (c->flags & CODEC_FLAG_QSCALE)
-                      mode = "on";
-                else if (!av_opt_get_int(c, "vad", AV_OPT_FLAG_ENCODING_PARAM, &vad_option) && vad_option)
-                      mode = "vad";
-                else
-                      mode = "off";
-
-                av_strlcatf(buff, size, "a=fmtp:%d vbr=%s\r\n",
-                                        payload_type, mode);
-            }
-            break;
-        case AV_CODEC_ID_OPUS:
-            av_strlcatf(buff, size, "a=rtpmap:%d opus/48000\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, AVStream *st, int idx,
-                        const char *dest_addr, const char *dest_type,
-                        int port, int ttl, AVFormatContext *fmt)
-{
-    AVCodecContext *c = st->codec;
-    const char *type;
-    int payload_type;
-
-    payload_type = ff_rtp_get_payload_type(fmt, c, idx);
-
-    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, 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, fmt);
-}
-
-int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
-{
-    AVDictionaryEntry *title = av_dict_get(ac[0]->metadata, "title", NULL, 0);
-    struct sdp_session_level s = { 0 };
-    int i, j, port, ttl, is_multicast, index = 0;
-    char dst[32], dst_type[5];
-
-    memset(buf, 0, size);
-    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);
-        is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
-                                           sizeof(dst_type));
-        if (!is_multicast)
-            ttl = 0;
-        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(buf, 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);
-            is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
-                                               sizeof(dst_type));
-            if (!is_multicast)
-                ttl = 0;
-        }
-        for (j = 0; j < ac[i]->nb_streams; j++) {
-            ff_sdp_write_media(buf, size, ac[i]->streams[j], index++,
-                               dst[0] ? dst : NULL, dst_type,
-                               (port > 0) ? port + j * 2 : 0,
-                               ttl, ac[i]);
-            if (port <= 0) {
-                av_strlcatf(buf, size,
-                                   "a=control:streamid=%d\r\n", i + j);
-            }
-            if (ac[i]->pb && ac[i]->pb->av_class) {
-                uint8_t *crypto_suite = NULL, *crypto_params = NULL;
-                av_opt_get(ac[i]->pb, "srtp_out_suite",  AV_OPT_SEARCH_CHILDREN,
-                           &crypto_suite);
-                av_opt_get(ac[i]->pb, "srtp_out_params", AV_OPT_SEARCH_CHILDREN,
-                           &crypto_params);
-                if (crypto_suite && crypto_suite[0])
-                    av_strlcatf(buf, size,
-                                "a=crypto:1 %s inline:%s\r\n",
-                                crypto_suite, crypto_params);
-                av_free(crypto_suite);
-                av_free(crypto_params);
-            }
-        }
-    }
-
-    return 0;
-}
-#else
-int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
-{
-    return AVERROR(ENOSYS);
-}
-
-void ff_sdp_write_media(char *buff, int size, AVStream *st, int idx,
-                        const char *dest_addr, const char *dest_type,
-                        int port, int ttl, AVFormatContext *fmt)
-{
-}
-#endif