| /* |
| * 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 "hevc.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(AVFormatContext *s, AVCodecParameters *par) |
| { |
| 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 *extradata = par->extradata; |
| int extradata_size = par->extradata_size; |
| uint8_t *tmpbuf = NULL; |
| const uint8_t *sps = NULL, *sps_end; |
| |
| if (par->extradata_size > MAX_EXTRADATA_SIZE) { |
| av_log(s, AV_LOG_ERROR, "Too much extradata!\n"); |
| |
| return NULL; |
| } |
| if (par->extradata[0] == 1) { |
| if (ff_avc_write_annexb_extradata(par->extradata, &extradata, |
| &extradata_size)) |
| return NULL; |
| tmpbuf = extradata; |
| } |
| |
| psets = av_mallocz(MAX_PSET_SIZE); |
| if (!psets) { |
| av_log(s, AV_LOG_ERROR, "Cannot allocate memory for the parameter sets.\n"); |
| av_free(tmpbuf); |
| return NULL; |
| } |
| memcpy(psets, pset_string, strlen(pset_string)); |
| p = psets + strlen(pset_string); |
| 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, extradata + 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)) { |
| 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; |
| } |
| 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'; |
| } |
| av_free(tmpbuf); |
| |
| return psets; |
| } |
| |
| static char *extradata2psets_hevc(AVCodecParameters *par) |
| { |
| 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; |
| |
| // 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; |
| if (avio_open_dyn_buf(&pb) < 0) |
| return NULL; |
| if (ff_isom_write_hvcc(pb, par->extradata, par->extradata_size, 0) < 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; |
| |
| psets = av_mallocz(MAX_PSET_SIZE); |
| if (!psets) |
| 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); |
| |
| return psets; |
| |
| err: |
| av_free(tmpbuf); |
| return NULL; |
| } |
| |
| static char *extradata2config(AVFormatContext *s, AVCodecParameters *par) |
| { |
| char *config; |
| |
| if (par->extradata_size > MAX_EXTRADATA_SIZE) { |
| av_log(s, AV_LOG_ERROR, "Too much extradata!\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 NULL; |
| } |
| memcpy(config, "; config=", 9); |
| ff_data_to_hex(config + 9, par->extradata, par->extradata_size, 0); |
| config[9 + par->extradata_size * 2] = 0; |
| |
| return config; |
| } |
| |
| static char *xiph_extradata2config(AVFormatContext *s, AVCodecParameters *par) |
| { |
| char *config, *encoded_config; |
| const uint8_t *header_start[3]; |
| int headers_len, header_len[3], config_len; |
| int first_header_size; |
| |
| switch (par->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(s, AV_LOG_ERROR, "Unsupported Xiph codec ID\n"); |
| return NULL; |
| } |
| |
| if (avpriv_split_xiph_headers(par->extradata, par->extradata_size, |
| first_header_size, header_start, |
| header_len) < 0) { |
| av_log(s, 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(s, AV_LOG_ERROR, |
| "Not enough memory for configuration string\n"); |
| return NULL; |
| } |
| |
| static int latm_context2profilelevel(AVCodecParameters *par) |
| { |
| /* 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 (par->sample_rate <= 24000) { |
| if (par->channels <= 2) |
| profile_level = 0x28; // AAC Profile, Level 1 |
| } else if (par->sample_rate <= 48000) { |
| if (par->channels <= 2) { |
| profile_level = 0x29; // AAC Profile, Level 2 |
| } else if (par->channels <= 5) { |
| profile_level = 0x2A; // AAC Profile, Level 4 |
| } |
| } else if (par->sample_rate <= 96000) { |
| if (par->channels <= 5) { |
| profile_level = 0x2B; // AAC Profile, Level 5 |
| } |
| } |
| |
| return profile_level; |
| } |
| |
| static char *latm_context2config(AVFormatContext *s, AVCodecParameters *par) |
| { |
| /* 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] == par->sample_rate) |
| break; |
| if (rate_index == 16) { |
| av_log(s, 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] = par->channels << 4; |
| config_byte[4] = 0x3f; |
| config_byte[5] = 0xc0; |
| |
| config = av_malloc(6*2+1); |
| if (!config) { |
| av_log(s, 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, AVStream *st, int payload_type, AVFormatContext *fmt) |
| { |
| char *config = NULL; |
| AVCodecParameters *p = st->codecpar; |
| |
| 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) { |
| config = extradata2psets(fmt, p); |
| } |
| 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) |
| config = extradata2psets_hevc(p); |
| 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) { |
| config = extradata2config(fmt, p); |
| } |
| 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(fmt, p); |
| 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, p->sample_rate, p->channels, |
| payload_type, latm_context2profilelevel(p), config); |
| } else { |
| if (p->extradata_size) { |
| config = extradata2config(fmt, p); |
| } else { |
| /* 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 NULL; |
| } |
| if (!config) { |
| 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, p->sample_rate, p->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->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->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->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->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->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->channels, |
| payload_type); |
| break; |
| case AV_CODEC_ID_VORBIS: |
| if (p->extradata_size) |
| config = xiph_extradata2config(fmt, p); |
| else |
| av_log(fmt, 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, p->sample_rate, p->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_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(fmt, AV_LOG_ERROR, "Unsupported pixel format.\n"); |
| return NULL; |
| } |
| |
| if (p->extradata_size) |
| config = xiph_extradata2config(fmt, p); |
| else |
| av_log(fmt, AV_LOG_ERROR, "Theora configuration 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, |
| p->width, p->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_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->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); |
| if (st->codec) { |
| const char *mode; |
| uint64_t vad_option; |
| |
| if (st->codec->flags & AV_CODEC_FLAG_QSCALE) |
| mode = "on"; |
| else if (!av_opt_get_int(st->codec, "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: |
| /* 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->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; |
| } |
| |
| 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) |
| { |
| AVCodecParameters *p = st->codecpar; |
| const char *type; |
| int payload_type; |
| |
| payload_type = ff_rtp_get_payload_type(fmt, st->codecpar, idx); |
| |
| 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; |
| 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 (p->bit_rate) { |
| av_strlcatf(buff, size, "b=AS:%"PRId64"\r\n", p->bit_rate / 1000); |
| } |
| |
| 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, 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]->url ? ac[0]->url : ""); |
| 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]->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], 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 |
