Imported Upstream version 6.1
[platform/upstream/ffmpeg.git] / libavformat / sdp.c
index 30941b7..6888936 100644 (file)
@@ -18,6 +18,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "config_components.h"
+
 #include <string.h>
 #include "libavutil/avstring.h"
 #include "libavutil/base64.h"
@@ -29,7 +31,9 @@
 #include "avformat.h"
 #include "internal.h"
 #include "avc.h"
+#include "hevc.h"
 #include "rtp.h"
+#include "version.h"
 #if CONFIG_NETWORK
 #include "network.h"
 #endif
@@ -128,7 +132,7 @@ static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
 
     *ttl = 0;
 
-    if (strcmp(proto, "rtp")) {
+    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.
          */
@@ -150,60 +154,49 @@ static int sdp_get_address(char *dest_addr, int size, int *ttl, const char *url)
 }
 
 #define MAX_PSET_SIZE 1024
-static char *extradata2psets(AVCodecContext *c)
+static int extradata2psets(AVFormatContext *s, const AVCodecParameters *par,
+                           char **out)
 {
     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;
+    uint8_t *extradata = par->extradata;
+    int extradata_size = par->extradata_size;
+    uint8_t *tmpbuf = NULL;
     const uint8_t *sps = NULL, *sps_end;
 
-    if (c->extradata_size > MAX_EXTRADATA_SIZE) {
-        av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
+    *out = NULL;
 
-        return NULL;
+    if (par->extradata_size > MAX_EXTRADATA_SIZE) {
+        av_log(s, AV_LOG_ERROR, "Too much extradata!\n");
+        return AVERROR_INVALIDDATA;
     }
-    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;
-        }
+    if (par->extradata[0] == 1) {
+        int ret = ff_avc_write_annexb_extradata(par->extradata, &extradata,
+                                                &extradata_size);
+        if (ret < 0)
+            return ret;
 
-        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);
+        tmpbuf = extradata;
     }
 
     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;
+    if (!psets) {
+        av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n");
+        av_free(tmpbuf);
+        return AVERROR(ENOMEM);
     }
     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) {
+    r = ff_avc_find_startcode(extradata, extradata + extradata_size);
+    while (r < extradata + 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);
+        r1 = ff_avc_find_startcode(r, extradata + extradata_size);
         if (nal_type != 7 && nal_type != 8) { /* Only output SPS and PPS */
             r = r1;
             continue;
@@ -216,59 +209,175 @@ static char *extradata2psets(AVCodecContext *c)
             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);
+        if (!av_base64_encode(p, MAX_PSET_SIZE - (p - psets), r, r1 - r)) {
+            av_log(s, AV_LOG_ERROR, "Cannot Base64-encode %"PTRDIFF_SPECIFIER" %"PTRDIFF_SPECIFIER"!\n",
+                   MAX_PSET_SIZE - (p - psets), r1 - r);
             av_free(psets);
+            av_free(tmpbuf);
 
-            return NULL;
+            return AVERROR_INVALIDDATA;
         }
         p += strlen(p);
         r = r1;
     }
-    if (sps && sps_end - sps >= 4) {
+    if (sps && sps_end - sps >= 4 && p - psets <= MAX_PSET_SIZE - strlen(profile_string) - 7) {
         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;
+    av_free(tmpbuf);
+
+    *out = psets;
+    return 0;
+}
+
+static int extradata2psets_hevc(const AVCodecParameters *par, char **out)
+{
+    char *psets;
+    uint8_t *extradata = par->extradata;
+    int extradata_size = par->extradata_size;
+    uint8_t *tmpbuf = NULL;
+    int ps_pos[3] = { 0 };
+    static const char * const ps_names[3] = { "vps", "sps", "pps" };
+    int num_arrays, num_nalus;
+    int pos, i, j, ret = 0;
+
+    *out = NULL;
+
+    // Convert to hvcc format. Since we need to group multiple NALUs of
+    // the same type, and we might need to convert from one format to the
+    // other anyway, we get away with a little less work by using the hvcc
+    // format.
+    if (par->extradata[0] != 1) {
+        AVIOContext *pb;
+
+        ret = avio_open_dyn_buf(&pb);
+        if (ret < 0)
+            return ret;
+
+        ret = ff_isom_write_hvcc(pb, par->extradata, par->extradata_size, 0);
+        if (ret < 0) {
+            avio_close_dyn_buf(pb, &tmpbuf);
+            goto err;
+        }
+        extradata_size = avio_close_dyn_buf(pb, &extradata);
+        tmpbuf = extradata;
+    }
+
+    if (extradata_size < 23)
+        goto err;
+
+    num_arrays = extradata[22];
+    pos = 23;
+    for (i = 0; i < num_arrays; i++) {
+        int num_nalus, nalu_type;
+        if (pos + 3 > extradata_size)
+            goto err;
+        nalu_type = extradata[pos] & 0x3f;
+        // Not including libavcodec/hevc.h to avoid confusion between
+        // NAL_* with the same name for both H.264 and HEVC.
+        if (nalu_type == 32) // VPS
+            ps_pos[0] = pos;
+        else if (nalu_type == 33) // SPS
+            ps_pos[1] = pos;
+        else if (nalu_type == 34) // PPS
+            ps_pos[2] = pos;
+        num_nalus = AV_RB16(&extradata[pos + 1]);
+        pos += 3;
+        for (j = 0; j < num_nalus; j++) {
+            int len;
+            if (pos + 2 > extradata_size)
+                goto err;
+            len = AV_RB16(&extradata[pos]);
+            pos += 2;
+            if (pos + len > extradata_size)
+                goto err;
+            pos += len;
+        }
     }
+    if (!ps_pos[0] || !ps_pos[1] || !ps_pos[2])
+        goto err;
 
-    return psets;
+    psets = av_mallocz(MAX_PSET_SIZE);
+    if (!psets) {
+        ret = AVERROR(ENOMEM);
+        goto err;
+    }
+
+    psets[0] = '\0';
+
+    for (i = 0; i < 3; i++) {
+        pos = ps_pos[i];
+
+        if (i > 0)
+            av_strlcat(psets, "; ", MAX_PSET_SIZE);
+        av_strlcatf(psets, MAX_PSET_SIZE, "sprop-%s=", ps_names[i]);
+
+        // Skipping boundary checks in the input here; we've already traversed
+        // the whole hvcc structure above without issues
+        num_nalus = AV_RB16(&extradata[pos + 1]);
+        pos += 3;
+        for (j = 0; j < num_nalus; j++) {
+            int len = AV_RB16(&extradata[pos]);
+            int strpos;
+            pos += 2;
+            if (j > 0)
+                av_strlcat(psets, ",", MAX_PSET_SIZE);
+            strpos = strlen(psets);
+            if (!av_base64_encode(psets + strpos, MAX_PSET_SIZE - strpos,
+                                  &extradata[pos], len)) {
+                av_free(psets);
+                goto err;
+            }
+            pos += len;
+        }
+    }
+    av_free(tmpbuf);
+
+    *out = psets;
+    return 0;
+err:
+    if (ret >= 0)
+        ret = AVERROR_INVALIDDATA;
+    av_free(tmpbuf);
+    return ret;
 }
 
-static char *extradata2config(AVCodecContext *c)
+static int extradata2config(AVFormatContext *s, const AVCodecParameters *par,
+                            char **out)
 {
     char *config;
 
-    if (c->extradata_size > MAX_EXTRADATA_SIZE) {
-        av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
+    *out = NULL;
 
-        return NULL;
+    if (par->extradata_size > MAX_EXTRADATA_SIZE) {
+        av_log(s, AV_LOG_ERROR, "Too much extradata!\n");
+        return AVERROR_INVALIDDATA;
     }
-    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;
+    config = av_malloc(10 + par->extradata_size * 2);
+    if (!config) {
+        av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
+        return AVERROR(ENOMEM);
     }
     memcpy(config, "; config=", 9);
-    ff_data_to_hex(config + 9, c->extradata, c->extradata_size, 0);
-    config[9 + c->extradata_size * 2] = 0;
+    ff_data_to_hex(config + 9, par->extradata, par->extradata_size, 0);
 
-    return config;
+    *out = config;
+    return 0;
 }
 
-static char *xiph_extradata2config(AVCodecContext *c)
+static int xiph_extradata2config(AVFormatContext *s, const AVCodecParameters *par,
+                                 char **out)
 {
-    char *config, *encoded_config;
-    uint8_t *header_start[3];
+    uint8_t *config;
+    char *encoded_config;
+    const uint8_t *header_start[3];
     int headers_len, header_len[3], config_len;
-    int first_header_size;
+    int first_header_size, ret;
 
-    switch (c->codec_id) {
+    *out = NULL;
+
+    switch (par->codec_id) {
     case AV_CODEC_ID_THEORA:
         first_header_size = 42;
         break;
@@ -276,15 +385,16 @@ static char *xiph_extradata2config(AVCodecContext *c)
         first_header_size = 30;
         break;
     default:
-        av_log(c, AV_LOG_ERROR, "Unsupported Xiph codec ID\n");
-        return NULL;
+        av_log(s, AV_LOG_ERROR, "Unsupported Xiph codec ID\n");
+        return AVERROR(ENOSYS);
     }
 
-    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;
+    ret = avpriv_split_xiph_headers(par->extradata, par->extradata_size,
+                                    first_header_size, header_start,
+                                    header_len);
+    if (ret < 0) {
+        av_log(s, AV_LOG_ERROR, "Extradata corrupt.\n");
+        return ret;
     }
 
     headers_len = header_len[0] + header_len[2];
@@ -322,15 +432,16 @@ static char *xiph_extradata2config(AVCodecContext *c)
                      config, config_len);
     av_free(config);
 
-    return encoded_config;
+    *out = encoded_config;
+    return 0;
 
 xiph_fail:
-    av_log(c, AV_LOG_ERROR,
+    av_log(s, AV_LOG_ERROR,
            "Not enough memory for configuration string\n");
-    return NULL;
+    return AVERROR(ENOMEM);
 }
 
-static int latm_context2profilelevel(AVCodecContext *c)
+static int latm_context2profilelevel(const AVCodecParameters *par)
 {
     /* MP4A-LATM
      * The RTP payload format specification is described in RFC 3016
@@ -341,17 +452,17 @@ static int latm_context2profilelevel(AVCodecContext *c)
     /* 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)
+    if (par->sample_rate <= 24000) {
+        if (par->ch_layout.nb_channels <= 2)
             profile_level = 0x28; // AAC Profile, Level 1
-    } else if (c->sample_rate <= 48000) {
-        if (c->channels <= 2) {
+    } else if (par->sample_rate <= 48000) {
+        if (par->ch_layout.nb_channels <= 2) {
             profile_level = 0x29; // AAC Profile, Level 2
-        } else if (c->channels <= 5) {
+        } else if (par->ch_layout.nb_channels <= 5) {
             profile_level = 0x2A; // AAC Profile, Level 4
         }
-    } else if (c->sample_rate <= 96000) {
-        if (c->channels <= 5) {
+    } else if (par->sample_rate <= 96000) {
+        if (par->ch_layout.nb_channels <= 5) {
             profile_level = 0x2B; // AAC Profile, Level 5
         }
     }
@@ -359,7 +470,8 @@ static int latm_context2profilelevel(AVCodecContext *c)
     return profile_level;
 }
 
-static char *latm_context2config(AVCodecContext *c)
+static int latm_context2config(AVFormatContext *s, const AVCodecParameters *par,
+                               char **out)
 {
     /* MP4A-LATM
      * The RTP payload format specification is described in RFC 3016
@@ -369,231 +481,345 @@ static char *latm_context2config(AVCodecContext *c)
     int rate_index;
     char *config;
 
+    *out = NULL;
+
     for (rate_index = 0; rate_index < 16; rate_index++)
-        if (avpriv_mpeg4audio_sample_rates[rate_index] == c->sample_rate)
+        if (ff_mpeg4audio_sample_rates[rate_index] == par->sample_rate)
             break;
     if (rate_index == 16) {
-        av_log(c, AV_LOG_ERROR, "Unsupported sample rate\n");
-        return NULL;
+        av_log(s, AV_LOG_ERROR, "Unsupported sample rate\n");
+        return AVERROR(ENOSYS);
     }
 
     config_byte[0] = 0x40;
     config_byte[1] = 0;
     config_byte[2] = 0x20 | rate_index;
-    config_byte[3] = c->channels << 4;
+    config_byte[3] = par->ch_layout.nb_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;
+        av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the config info.\n");
+        return AVERROR(ENOMEM);
     }
     ff_data_to_hex(config, config_byte, 6, 1);
-    config[12] = 0;
 
-    return config;
+    *out = config;
+    return 0;
 }
 
-static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type, AVFormatContext *fmt)
+static int sdp_write_media_attributes(char *buff, int size, const AVStream *st,
+                                      int payload_type, AVFormatContext *fmt)
 {
     char *config = NULL;
+    const AVCodecParameters *p = st->codecpar;
+    int ret = 0;
 
-    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;
+    switch (p->codec_id) {
+    case AV_CODEC_ID_DIRAC:
+        av_strlcatf(buff, size, "a=rtpmap:%d VC2/90000\r\n", payload_type);
+        break;
+    case AV_CODEC_ID_H264: {
+        int mode = 1;
+        if (fmt && fmt->oformat && fmt->oformat->priv_class &&
+            av_opt_flag_is_set(fmt->priv_data, "rtpflags", "h264_mode0"))
+            mode = 0;
+        if (p->extradata_size) {
+            ret = extradata2psets(fmt, p, &config);
+            if (ret < 0)
+                return ret;
         }
-        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);
+        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_H261:
+    {
+        const char *pic_fmt = NULL;
+        /* only QCIF and CIF are specified as supported in RFC 4587 */
+        if (p->width == 176 && p->height == 144)
+            pic_fmt = "QCIF=1";
+        else if (p->width == 352 && p->height == 288)
+            pic_fmt = "CIF=1";
+        if (payload_type >= RTP_PT_PRIVATE)
+            av_strlcatf(buff, size, "a=rtpmap:%d H261/90000\r\n", payload_type);
+        if (pic_fmt)
+            av_strlcatf(buff, size, "a=fmtp:%d %s\r\n", payload_type, pic_fmt);
+        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") ||
+            p->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, p->width, p->height);
+        break;
+    case AV_CODEC_ID_HEVC:
+        if (p->extradata_size) {
+            ret = extradata2psets_hevc(p, &config);
+            if (ret < 0)
+                return ret;
+        }
+        av_strlcatf(buff, size, "a=rtpmap:%d H265/90000\r\n", payload_type);
+        if (config)
+            av_strlcatf(buff, size, "a=fmtp:%d %s\r\n",
+                                     payload_type, config);
+        break;
+    case AV_CODEC_ID_MPEG4:
+        if (p->extradata_size) {
+            ret = extradata2config(fmt, p, &config);
+            if (ret < 0)
+                return ret;
+        }
+        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")) {
+            ret = latm_context2config(fmt, p, &config);
+            if (ret < 0)
+                return ret;
+            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, p->sample_rate, p->ch_layout.nb_channels,
+                                     payload_type, latm_context2profilelevel(p), config);
+        } else {
+            if (p->extradata_size) {
+                ret = extradata2config(fmt, p, &config);
+                if (ret < 0)
+                    return ret;
             } 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);
+                /* FIXME: maybe we can forge config information based on the
+                 *        codec parameters...
+                 */
+                av_log(fmt, AV_LOG_ERROR, "AAC with no global headers is currently not supported.\n");
+                return AVERROR(ENOSYS);
             }
+            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, p->sample_rate, p->ch_layout.nb_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,
+                                     p->sample_rate, p->ch_layout.nb_channels);
+        break;
+    case AV_CODEC_ID_PCM_S24BE:
+        if (payload_type >= RTP_PT_PRIVATE)
+            av_strlcatf(buff, size, "a=rtpmap:%d L24/%d/%d\r\n",
+                                     payload_type,
+                                     p->sample_rate, p->ch_layout.nb_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,
+                                     p->sample_rate, p->ch_layout.nb_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,
+                                     p->sample_rate, p->ch_layout.nb_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, p->sample_rate, p->ch_layout.nb_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, p->sample_rate, p->ch_layout.nb_channels,
+                                 payload_type);
+        break;
+    case AV_CODEC_ID_VORBIS:
+        if (p->extradata_size)
+            ret = xiph_extradata2config(fmt, p, &config);
+        else {
+            av_log(fmt, AV_LOG_ERROR, "Vorbis configuration info missing\n");
+            ret = AVERROR_INVALIDDATA;
+        }
+        if (ret < 0)
+            return ret;
+
+        av_strlcatf(buff, size, "a=rtpmap:%d vorbis/%d/%d\r\n"
+                                "a=fmtp:%d configuration=%s\r\n",
+                                payload_type, p->sample_rate, p->ch_layout.nb_channels,
+                                payload_type, config);
+        break;
+    case AV_CODEC_ID_THEORA: {
+        const char *pix_fmt;
+        switch (p->format) {
+        case AV_PIX_FMT_YUV420P:
+            pix_fmt = "YCbCr-4:2:0";
             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);
+        case AV_PIX_FMT_YUV422P:
+            pix_fmt = "YCbCr-4:2:2";
             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);
+        case AV_PIX_FMT_YUV444P:
+            pix_fmt = "YCbCr-4:4:4";
             break;
-        case AV_CODEC_ID_THEORA: {
-            const char *pix_fmt;
-            if (c->extradata_size)
-                config = xiph_extradata2config(c);
-            else
-                av_log(c, AV_LOG_ERROR, "Theora configuation info missing\n");
-            if (!config)
-                return NULL;
-
-            switch (c->pix_fmt) {
-            case PIX_FMT_YUV420P:
-                pix_fmt = "YCbCr-4:2:0";
-                break;
-            case PIX_FMT_YUV422P:
-                pix_fmt = "YCbCr-4:2:2";
-                break;
-            case PIX_FMT_YUV444P:
-                pix_fmt = "YCbCr-4:4:4";
-                break;
-            default:
-                av_log(c, AV_LOG_ERROR, "Unsupported pixel format.\n");
-                return NULL;
-            }
+        default:
+            av_log(fmt, AV_LOG_ERROR, "Unsupported pixel format.\n");
+            return AVERROR(ENOSYS);
+        }
 
-            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;
+        if (p->extradata_size)
+            ret = xiph_extradata2config(fmt, p, &config);
+        else {
+            av_log(fmt, AV_LOG_ERROR, "Theora configuration info missing\n");
+            ret = AVERROR_INVALIDDATA;
         }
-        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);
+        if (ret < 0)
+            return ret;
+
+        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,
+                                p->width, p->height, pix_fmt, config);
+        break;
+    }
+    case AV_CODEC_ID_BITPACKED:
+    case AV_CODEC_ID_RAWVIDEO: {
+        const char *pix_fmt;
+        int bit_depth = 8;
+
+        switch (p->format) {
+        case AV_PIX_FMT_UYVY422:
+            pix_fmt = "YCbCr-4:2:2";
             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);
+        case AV_PIX_FMT_YUV422P10:
+            pix_fmt = "YCbCr-4:2:2";
+            bit_depth = 10;
             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);
+        case AV_PIX_FMT_YUV420P:
+            pix_fmt = "YCbCr-4:2:0";
             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);
+        case AV_PIX_FMT_RGB24:
+            pix_fmt = "RGB";
             break;
-        case AV_CODEC_ID_SPEEX:
-            av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n",
-                                     payload_type, c->sample_rate);
+        case AV_PIX_FMT_BGR24:
+            pix_fmt = "BGR";
             break;
         default:
-            /* Nothing special to do here... */
-            break;
+            av_log(fmt, AV_LOG_ERROR, "Unsupported pixel format.\n");
+            return AVERROR(ENOSYS);
+        }
+
+        av_strlcatf(buff, size, "a=rtpmap:%d raw/90000\r\n"
+                                "a=fmtp:%d sampling=%s; "
+                                "width=%d; height=%d; "
+                                "depth=%d",
+                                payload_type, payload_type,
+                                pix_fmt, p->width, p->height, bit_depth);
+        if (p->field_order != AV_FIELD_PROGRESSIVE)
+            av_strlcatf(buff, size, "; interlace");
+        av_strlcatf(buff, size, "\r\n");
+        break;
+    }
+
+    case AV_CODEC_ID_VP8:
+        av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n",
+                                 payload_type);
+        break;
+    case AV_CODEC_ID_VP9:
+        av_strlcatf(buff, size, "a=rtpmap:%d VP9/90000\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, p->ch_layout.nb_channels);
+        break;
+    case AV_CODEC_ID_ADPCM_G726: {
+        if (payload_type >= RTP_PT_PRIVATE)
+            av_strlcatf(buff, size, "a=rtpmap:%d AAL2-G726-%d/%d\r\n",
+                                     payload_type,
+                                     p->bits_per_coded_sample*8,
+                                     p->sample_rate);
+        break;
+    }
+    case AV_CODEC_ID_ADPCM_G726LE: {
+        if (payload_type >= RTP_PT_PRIVATE)
+            av_strlcatf(buff, size, "a=rtpmap:%d G726-%d/%d\r\n",
+                                     payload_type,
+                                     p->bits_per_coded_sample*8,
+                                     p->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, p->sample_rate,
+                                 payload_type, p->block_align == 38 ? 20 : 30);
+        break;
+    case AV_CODEC_ID_SPEEX:
+        av_strlcatf(buff, size, "a=rtpmap:%d speex/%d\r\n",
+                                 payload_type, p->sample_rate);
+        break;
+    case AV_CODEC_ID_OPUS:
+        /* The opus RTP draft says that all opus streams MUST be declared
+           as stereo, to avoid negotiation failures. The actual number of
+           channels can change on a packet-by-packet basis. The number of
+           channels a receiver prefers to receive or a sender plans to send
+           can be declared via fmtp parameters (both default to mono), but
+           receivers MUST be able to receive and process stereo packets. */
+        av_strlcatf(buff, size, "a=rtpmap:%d opus/48000/2\r\n",
+                                 payload_type);
+        if (p->ch_layout.nb_channels == 2) {
+            av_strlcatf(buff, size, "a=fmtp:%d sprop-stereo=1\r\n",
+                                     payload_type);
+        }
+        break;
+    default:
+        /* Nothing special to do here... */
+        break;
     }
 
     av_free(config);
 
-    return buff;
+    return 0;
 }
 
-void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl, AVFormatContext *fmt)
+int ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
+                       const char *dest_addr, const char *dest_type,
+                       int port, int ttl, AVFormatContext *fmt)
 {
+    const AVCodecParameters *p = st->codecpar;
     const char *type;
     int payload_type;
 
-    payload_type = ff_rtp_get_payload_type(fmt, c);
+    payload_type = ff_rtp_get_payload_type(fmt, st->codecpar, idx);
 
-    switch (c->codec_type) {
+    switch (p->codec_type) {
         case AVMEDIA_TYPE_VIDEO   : type = "video"      ; break;
         case AVMEDIA_TYPE_AUDIO   : type = "audio"      ; break;
         case AVMEDIA_TYPE_SUBTITLE: type = "text"       ; break;
@@ -602,18 +828,18 @@ void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *des
 
     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);
+    if (p->bit_rate) {
+        av_strlcatf(buff, size, "b=AS:%"PRId64"\r\n", p->bit_rate / 1000);
     }
 
-    sdp_write_media_attributes(buff, size, c, payload_type, fmt);
+    return sdp_write_media_attributes(buff, size, st, 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;
+    int i, j, port, ttl, is_multicast, index = 0;
     char dst[32], dst_type[5];
 
     memset(buf, 0, size);
@@ -625,7 +851,7 @@ int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
     port = 0;
     ttl = 0;
     if (n_files == 1) {
-        port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->filename);
+        port = sdp_get_address(dst, sizeof(dst), &ttl, ac[0]->url ? ac[0]->url : "");
         is_multicast = resolve_destination(dst, sizeof(dst), dst_type,
                                            sizeof(dst_type));
         if (!is_multicast)
@@ -645,21 +871,37 @@ int av_sdp_create(AVFormatContext *ac[], int n_files, char *buf, int size)
     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);
+            port = sdp_get_address(dst, sizeof(dst), &ttl, ac[i]->url ? ac[i]->url : "");
             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]->codec, dst[0] ? dst : NULL,
-                                  dst_type, (port > 0) ? port + j * 2 : 0, ttl,
-                                  ac[i]);
+            int ret = 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 (ret < 0)
+                return ret;
+
             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);
+            }
         }
     }
 
@@ -671,7 +913,10 @@ 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, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl, AVFormatContext *fmt)
+int ff_sdp_write_media(char *buff, int size, const AVStream *st, int idx,
+                       const char *dest_addr, const char *dest_type,
+                       int port, int ttl, AVFormatContext *fmt)
 {
+    return AVERROR(ENOSYS);
 }
 #endif