X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fsdp.c;h=872e76c5aee89ee58cbecb70b2450ac64aa1ec36;hb=5e81cb580a271de8767e85c7c43733c7713aee92;hp=1062c8d3e2ec8a0fe14fb841957ddbcda07dacf0;hpb=8767b80f5faa59bace5360465b68c39a24075bf1;p=ffmpeg diff --git a/libavformat/sdp.c b/libavformat/sdp.c index 1062c8d3e2e..872e76c5aee 100644 --- a/libavformat/sdp.c +++ b/libavformat/sdp.c @@ -18,34 +18,50 @@ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include "avstring.h" +#include +#include "libavutil/avstring.h" +#include "libavutil/base64.h" +#include "libavcodec/xiph.h" #include "avformat.h" +#include "internal.h" +#include "avc.h" +#include "rtp.h" +#if CONFIG_NETWORK +#include "network.h" +#endif -#ifdef CONFIG_RTP_MUXER +#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 id; /**< session ID */ int version; /**< session version */ int start_time; /**< session start time (NTP time, in seconds), - or 0 in case of permanent session */ + 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 dest_write(char *buff, int size, const char *dest_addr, int ttl) +static void sdp_write_address(char *buff, int size, const char *dest_addr, + const char *dest_type, int ttl) { if (dest_addr) { - if (ttl > 0) { - av_strlcatf(buff, size, "c=IN IP4 %s/%d\r\n", dest_addr, ttl); + 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 IP4 %s\r\n", dest_addr); + av_strlcatf(buff, size, "c=IN %s %s\r\n", dest_type, dest_addr); } } } @@ -53,91 +69,376 @@ static void dest_write(char *buff, int size, const char *dest_addr, int ttl) 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 IPV4 %s\r\n" - "t=%d %d\r\n" - "s=%s\r\n" - "a=tool:libavformat\r\n", + "o=- %d %d IN %s %s\r\n" + "s=%s\r\n", s->sdp_version, - s->id, s->version, s->src_addr, - s->start_time, s->end_time, - s->name[0] ? s->name : "No Name"); - dest_write(buff, size, s->dst_addr, s->ttl); + 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); } -static int get_address(char *dest_addr, int size, int *ttl, const char *url) +#if CONFIG_NETWORK +static int resolve_destination(char *dest_addr, int size, char *type, + int type_size) +{ + struct addrinfo hints, *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. */ + + memset(&hints, 0, sizeof(hints)); + 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]; - url_split(NULL, 0, NULL, 0, dest_addr, size, &port, NULL, 0, url); + av_url_split(proto, sizeof(proto), NULL, 0, dest_addr, size, &port, NULL, 0, url); *ttl = 0; + + if (strcmp(proto, "rtp")) { + /* 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]; - int is_multicast = find_info_tag(buff, sizeof(buff), "multicast", p); - if (is_multicast) { - if (find_info_tag(buff, sizeof(buff), "ttl", p)) { - *ttl = strtol(buff, NULL, 10); - } else { - *ttl = 5; - } + if (find_info_tag(buff, sizeof(buff), "ttl", p)) { + *ttl = strtol(buff, NULL, 10); + } else { + *ttl = 5; } } return port; } -static void digit_to_char(char *dst, uint8_t src) +#define MAX_PSET_SIZE 1024 +static char *extradata2psets(AVCodecContext *c) { - if (src < 10) { - *dst = '0' + src; - } else { - *dst = 'A' + src - 10; + char *psets, *p; + const uint8_t *r; + const char *pset_string = "; sprop-parameter-sets="; + + 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; + } + 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"); + 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 (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; + } + + return psets; } -static char *data_to_hex(char *buff, const uint8_t *src, int s) +static char *extradata2config(AVCodecContext *c) { - int i; + char *config; - for(i = 0; i < s; i++) { - digit_to_char(buff + 2 * i, src[i] >> 4); - digit_to_char(buff + 2 * i + 1, src[i] & 0xF); + 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 buff; + 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 CODEC_ID_THEORA: + first_header_size = 42; + break; + case CODEC_ID_VORBIS: + first_header_size = 30; + break; + default: + av_log(c, AV_LOG_ERROR, "Unsupported Xiph codec ID\n"); + return NULL; + } + + if (ff_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 char *sdp_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type) +static char *sdp_write_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type) { char *config = NULL; switch (c->codec_id) { + case CODEC_ID_H264: + if (c->extradata_size) { + config = extradata2psets(c); + } + av_strlcatf(buff, size, "a=rtpmap:%d H264/90000\r\n" + "a=fmtp:%d packetization-mode=1%s\r\n", + payload_type, + payload_type, config ? config : ""); + break; + case CODEC_ID_H263: + case 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. */ + 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 CODEC_ID_MPEG4: - if (c->flags & CODEC_FLAG_GLOBAL_HEADER) { - if (c->extradata_size > MAX_EXTRADATA_SIZE) { - av_log(NULL, AV_LOG_ERROR, "Too many extra data!\n"); - - return NULL; - } - config = av_malloc(10 + c->extradata_size * 2); - if (config == NULL) { - av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory for the config info\n"); - return NULL; - } - memcpy(config, "; config=", 9); - data_to_hex(config + 9, c->extradata, c->extradata_size); - config[9 + c->extradata_size * 2] = 0; + 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 CODEC_ID_AAC: + 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 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 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 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 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 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 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 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; + } + + av_strlcatf(buff, size, "a=rtpmap:%d theora/90000\r\n" + "a=fmtp:%d delivery-method=inline; " + "width=%d; height=%d; sampling=%s; " + "configuration=%s\r\n", + payload_type, payload_type, + c->width, c->height, pix_fmt, config); + break; + } + case CODEC_ID_VP8: + av_strlcatf(buff, size, "a=rtpmap:%d VP8/90000\r\n", + payload_type); + break; + case 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; default: - /* Nothing special to do, here... */ + /* Nothing special to do here... */ break; } @@ -146,47 +447,62 @@ static char *sdp_media_attributes(char *buff, int size, AVCodecContext *c, int p return buff; } -static void sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, int port, int ttl) +void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl) { const char *type; int payload_type; - payload_type = rtp_get_payload_type(c); + payload_type = ff_rtp_get_payload_type(c); if (payload_type < 0) { - payload_type = 96; /* FIXME: how to assign a private pt? rtp.c is broken too */ + payload_type = RTP_PT_PRIVATE + (c->codec_type == AVMEDIA_TYPE_AUDIO); } switch (c->codec_type) { - case CODEC_TYPE_VIDEO : type = "video" ; break; - case CODEC_TYPE_AUDIO : type = "audio" ; break; - case CODEC_TYPE_SUBTITLE: type = "text" ; break; + 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); - dest_write(buff, size, dest_addr, ttl); + sdp_write_address(buff, size, dest_addr, dest_type, ttl); + if (c->bit_rate) { + av_strlcatf(buff, size, "b=AS:%d\r\n", c->bit_rate / 1000); + } - sdp_media_attributes(buff, size, c, payload_type); + sdp_write_media_attributes(buff, size, c, payload_type); } int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size) { + AVMetadataTag *title = av_metadata_get(ac[0]->metadata, "title", NULL, 0); struct sdp_session_level s; - int i, j, port, ttl; - char dst[32]; + int i, j, port, ttl, is_multicast; + char dst[32], dst_type[5]; + memset(buff, 0, size); memset(&s, 0, sizeof(struct sdp_session_level)); s.user = "-"; s.src_addr = "127.0.0.1"; /* FIXME: Properly set this */ - s.name = ac[0]->title; + s.src_type = "IP4"; + s.name = title ? title->value : "No Name"; port = 0; ttl = 0; if (n_files == 1) { - port = get_address(dst, sizeof(dst), &ttl, ac[0]->filename); - if (port > 0) { + 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(buff, size, &s); @@ -194,12 +510,16 @@ int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size) dst[0] = 0; for (i = 0; i < n_files; i++) { if (n_files != 1) { - port = get_address(dst, sizeof(dst), &ttl, ac[i]->filename); + 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++) { - sdp_write_media(buff, size, + ff_sdp_write_media(buff, size, ac[i]->streams[j]->codec, dst[0] ? dst : NULL, - (port > 0) ? port + j * 2 : 0, ttl); + dst_type, (port > 0) ? port + j * 2 : 0, ttl); if (port <= 0) { av_strlcatf(buff, size, "a=control:streamid=%d\r\n", i + j); @@ -214,4 +534,8 @@ int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size) { return AVERROR(ENOSYS); } + +void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl) +{ +} #endif