* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "avstring.h"
+#include <string.h>
+#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
+#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);
}
}
}
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;
+
+ if (c->extradata_size > MAX_EXTRADATA_SIZE) {
+ av_log(c, AV_LOG_ERROR, "Too much extradata!\n");
- 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);
+ 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 *sdp_media_attributes(char *buff, int size, AVCodecContext *c, int payload_type)
+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_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;
}
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);
}
-#define SDP_BUFFER_SIZE 2048
-char *avf_sdp_create(AVFormatContext *ac[], int n_files)
+int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size)
{
- char *buff;
+ AVMetadataTag *title = av_metadata_get(ac[0]->metadata, "title", NULL, 0);
struct sdp_session_level s;
- int i, j, port, ttl;
- char dst[32];
-
- buff = av_mallocz(SDP_BUFFER_SIZE);
- if (buff == NULL) {
- return NULL;
- }
+ 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, SDP_BUFFER_SIZE, &s);
+ sdp_write_header(buff, size, &s);
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, SDP_BUFFER_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, SDP_BUFFER_SIZE,
+ av_strlcatf(buff, size,
"a=control:streamid=%d\r\n", i + j);
}
}
}
- return buff;
+ return 0;
+}
+#else
+int avf_sdp_create(AVFormatContext *ac[], int n_files, char *buff, int size)
+{
+ return AVERROR(ENOSYS);
+}
+
+void ff_sdp_write_media(char *buff, int size, AVCodecContext *c, const char *dest_addr, const char *dest_type, int port, int ttl)
+{
}
+#endif