floatdsp: move vector_fmul_add from dsputil to avfloatdsp.
[ffmpeg.git] / libavformat / rtpdec.c
index ac294a0..145d7c8 100644 (file)
@@ -24,8 +24,8 @@
 #include "libavutil/time.h"
 #include "libavcodec/get_bits.h"
 #include "avformat.h"
-#include "mpegts.h"
 #include "network.h"
+#include "srtp.h"
 #include "url.h"
 #include "rtpdec.h"
 #include "rtpdec_formats.h"
@@ -50,7 +50,6 @@ static RTPDynamicProtocolHandler opus_dynamic_handler = {
     .codec_id   = AV_CODEC_ID_OPUS,
 };
 
-/* statistics functions */
 static RTPDynamicProtocolHandler *rtp_first_dynamic_payload_handler = NULL;
 
 void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler)
@@ -61,39 +60,39 @@ void ff_register_dynamic_payload_handler(RTPDynamicProtocolHandler *handler)
 
 void av_register_rtp_dynamic_payload_handlers(void)
 {
-    ff_register_dynamic_payload_handler(&ff_mp4v_es_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_mpeg4_generic_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_amr_nb_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_amr_wb_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_g726_16_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_g726_24_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_g726_32_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_g726_40_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_h263_1998_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_h263_2000_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_h263_rfc2190_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_h264_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_ilbc_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_jpeg_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_vorbis_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_theora_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_qdm2_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_svq3_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_mp4a_latm_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_vp8_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_qcelp_dynamic_handler);
-    ff_register_dynamic_payload_handler(&realmedia_mp3_dynamic_handler);
-    ff_register_dynamic_payload_handler(&speex_dynamic_handler);
-    ff_register_dynamic_payload_handler(&opus_dynamic_handler);
-
+    ff_register_dynamic_payload_handler(&ff_mp4v_es_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_mpeg_audio_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_mpeg_video_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_mpeg4_generic_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_mpegts_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_ms_rtp_asf_pfv_handler);
     ff_register_dynamic_payload_handler(&ff_ms_rtp_asf_pfa_handler);
-
+    ff_register_dynamic_payload_handler(&ff_qcelp_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_qdm2_dynamic_handler);
     ff_register_dynamic_payload_handler(&ff_qt_rtp_aud_handler);
     ff_register_dynamic_payload_handler(&ff_qt_rtp_vid_handler);
     ff_register_dynamic_payload_handler(&ff_quicktime_rtp_aud_handler);
     ff_register_dynamic_payload_handler(&ff_quicktime_rtp_vid_handler);
-
-    ff_register_dynamic_payload_handler(&ff_g726_16_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_g726_24_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_g726_32_dynamic_handler);
-    ff_register_dynamic_payload_handler(&ff_g726_40_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_svq3_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_theora_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_vorbis_dynamic_handler);
+    ff_register_dynamic_payload_handler(&ff_vp8_dynamic_handler);
+    ff_register_dynamic_payload_handler(&opus_dynamic_handler);
+    ff_register_dynamic_payload_handler(&realmedia_mp3_dynamic_handler);
+    ff_register_dynamic_payload_handler(&speex_dynamic_handler);
 }
 
 RTPDynamicProtocolHandler *ff_rtp_handler_find_by_name(const char *name,
@@ -135,6 +134,7 @@ static int rtcp_parse_packet(RTPDemuxContext *s, const unsigned char *buf,
                 return AVERROR_INVALIDDATA;
             }
 
+            s->last_rtcp_reception_time = av_gettime();
             s->last_rtcp_ntp_time  = AV_RB64(buf + 8);
             s->last_rtcp_timestamp = AV_RB32(buf + 16);
             if (s->first_rtcp_ntp_time == AV_NOPTS_VALUE) {
@@ -258,10 +258,9 @@ int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, URLContext *fd,
     uint32_t extended_max;
     uint32_t expected_interval;
     uint32_t received_interval;
-    uint32_t lost_interval;
+    int32_t  lost_interval;
     uint32_t expected;
     uint32_t fraction;
-    uint64_t ntp_time = s->last_rtcp_ntp_time; // TODO: Get local ntp time?
 
     if ((!fd && !avio) || (count < 1))
         return -1;
@@ -315,7 +314,8 @@ int ff_rtp_check_and_send_back_rr(RTPDemuxContext *s, URLContext *fd,
         avio_wb32(pb, 0); /* delay since last SR */
     } else {
         uint32_t middle_32_bits   = s->last_rtcp_ntp_time >> 16; // this is valid, right? do we need to handle 64 bit values special?
-        uint32_t delay_since_last = ntp_time - s->last_rtcp_ntp_time;
+        uint32_t delay_since_last = av_rescale(av_gettime() - s->last_rtcp_reception_time,
+                                               65536, AV_TIME_BASE);
 
         avio_wb32(pb, middle_32_bits); /* last SR timestamp */
         avio_wb32(pb, delay_since_last); /* delay since last SR */
@@ -483,8 +483,7 @@ int ff_rtp_send_rtcp_feedback(RTPDemuxContext *s, URLContext *fd,
 
 /**
  * open a new RTP parse context for stream 'st'. 'st' can be NULL for
- * MPEG2-TS streams to indicate that they should be demuxed inside the
- * rtp demux (otherwise AV_CODEC_ID_MPEG2TS packets are returned)
+ * MPEG2-TS streams.
  */
 RTPDemuxContext *ff_rtp_parse_open(AVFormatContext *s1, AVStream *st,
                                    int payload_type, int queue_size)
@@ -501,26 +500,8 @@ RTPDemuxContext *ff_rtp_parse_open(AVFormatContext *s1, AVStream *st,
     s->st                  = st;
     s->queue_size          = queue_size;
     rtp_init_statistics(&s->statistics, 0);
-    if (!strcmp(ff_rtp_enc_name(payload_type), "MP2T")) {
-        s->ts = ff_mpegts_parse_open(s->ic);
-        if (s->ts == NULL) {
-            av_free(s);
-            return NULL;
-        }
-    } else if (st) {
+    if (st) {
         switch (st->codec->codec_id) {
-        case AV_CODEC_ID_MPEG1VIDEO:
-        case AV_CODEC_ID_MPEG2VIDEO:
-        case AV_CODEC_ID_MP2:
-        case AV_CODEC_ID_MP3:
-        case AV_CODEC_ID_MPEG4:
-        case AV_CODEC_ID_H263:
-        case AV_CODEC_ID_H264:
-            st->need_parsing = AVSTREAM_PARSE_FULL;
-            break;
-        case AV_CODEC_ID_VORBIS:
-            st->need_parsing = AVSTREAM_PARSE_HEADERS;
-            break;
         case AV_CODEC_ID_ADPCM_G722:
             /* According to RFC 3551, the stream clock rate is 8000
              * even if the sample rate is 16000. */
@@ -543,6 +524,13 @@ void ff_rtp_parse_set_dynamic_protocol(RTPDemuxContext *s, PayloadContext *ctx,
     s->handler                  = handler;
 }
 
+void ff_rtp_parse_set_crypto(RTPDemuxContext *s, const char *suite,
+                             const char *params)
+{
+    if (!ff_srtp_set_crypto(&s->srtp, suite, params))
+        s->srtp_enabled = 1;
+}
+
 /**
  * This was the second switch in rtp_parse packet.
  * Normalizes time, if required, sets stream_index, etc.
@@ -585,13 +573,14 @@ static void finalize_packet(RTPDemuxContext *s, AVPacket *pkt, uint32_t timestam
 static int rtp_parse_packet_internal(RTPDemuxContext *s, AVPacket *pkt,
                                      const uint8_t *buf, int len)
 {
-    unsigned int ssrc, h;
-    int payload_type, seq, ret, flags = 0;
-    int ext;
+    unsigned int ssrc;
+    int payload_type, seq, flags = 0;
+    int ext, csrc;
     AVStream *st;
     uint32_t timestamp;
     int rv = 0;
 
+    csrc         = buf[0] & 0x0f;
     ext          = buf[0] & 0x10;
     payload_type = buf[1] & 0x7f;
     if (buf[1] & 0x80)
@@ -625,6 +614,11 @@ static int rtp_parse_packet_internal(RTPDemuxContext *s, AVPacket *pkt,
     len   -= 12;
     buf   += 12;
 
+    len   -= 4 * csrc;
+    buf   += 4 * csrc;
+    if (len < 0)
+        return AVERROR_INVALIDDATA;
+
     /* RFC 3550 Section 5.3.1 RTP Header Extension handling */
     if (ext) {
         if (len < 4)
@@ -640,65 +634,17 @@ static int rtp_parse_packet_internal(RTPDemuxContext *s, AVPacket *pkt,
         buf += ext;
     }
 
-    if (!st) {
-        /* specific MPEG2-TS demux support */
-        ret = ff_mpegts_parse_packet(s->ts, pkt, buf, len);
-        /* The only error that can be returned from ff_mpegts_parse_packet
-         * is "no more data to return from the provided buffer", so return
-         * AVERROR(EAGAIN) for all errors */
-        if (ret < 0)
-            return AVERROR(EAGAIN);
-        if (ret < len) {
-            s->read_buf_size = FFMIN(len - ret, sizeof(s->buf));
-            memcpy(s->buf, buf + ret, s->read_buf_size);
-            s->read_buf_index = 0;
-            return 1;
-        }
-        return 0;
-    } else if (s->handler && s->handler->parse_packet) {
+    if (s->handler && s->handler->parse_packet) {
         rv = s->handler->parse_packet(s->ic, s->dynamic_protocol_context,
                                       s->st, pkt, &timestamp, buf, len, seq,
                                       flags);
-    } else {
-        /* At this point, the RTP header has been stripped;
-         * This is ASSUMING that there is only 1 CSRC, which isn't wise. */
-        switch (st->codec->codec_id) {
-        case AV_CODEC_ID_MP2:
-        case AV_CODEC_ID_MP3:
-            /* better than nothing: skip MPEG audio RTP header */
-            if (len <= 4)
-                return -1;
-            h    = AV_RB32(buf);
-            len -= 4;
-            buf += 4;
-            av_new_packet(pkt, len);
-            memcpy(pkt->data, buf, len);
-            break;
-        case AV_CODEC_ID_MPEG1VIDEO:
-        case AV_CODEC_ID_MPEG2VIDEO:
-            /* better than nothing: skip MPEG video RTP header */
-            if (len <= 4)
-                return -1;
-            h    = AV_RB32(buf);
-            buf += 4;
-            len -= 4;
-            if (h & (1 << 26)) {
-                /* MPEG-2 */
-                if (len <= 4)
-                    return -1;
-                buf += 4;
-                len -= 4;
-            }
-            av_new_packet(pkt, len);
-            memcpy(pkt->data, buf, len);
-            break;
-        default:
-            av_new_packet(pkt, len);
-            memcpy(pkt->data, buf, len);
-            break;
-        }
-
+    } else if (st) {
+        if ((rv = av_new_packet(pkt, len)) < 0)
+            return rv;
+        memcpy(pkt->data, buf, len);
         pkt->stream_index = st->index;
+    } else {
+        return AVERROR(EINVAL);
     }
 
     // now perform timestamp things....
@@ -723,15 +669,14 @@ void ff_rtp_reset_packet_queue(RTPDemuxContext *s)
 static void enqueue_packet(RTPDemuxContext *s, uint8_t *buf, int len)
 {
     uint16_t seq   = AV_RB16(buf + 2);
-    RTPPacket *cur = s->queue, *prev = NULL, *packet;
+    RTPPacket **cur = &s->queue, *packet;
 
     /* Find the correct place in the queue to insert the packet */
-    while (cur) {
-        int16_t diff = seq - cur->seq;
+    while (*cur) {
+        int16_t diff = seq - (*cur)->seq;
         if (diff < 0)
             break;
-        prev = cur;
-        cur  = cur->next;
+        cur = &(*cur)->next;
     }
 
     packet = av_mallocz(sizeof(*packet));
@@ -741,11 +686,8 @@ static void enqueue_packet(RTPDemuxContext *s, uint8_t *buf, int len)
     packet->seq      = seq;
     packet->len      = len;
     packet->buf      = buf;
-    packet->next     = cur;
-    if (prev)
-        prev->next = packet;
-    else
-        s->queue = packet;
+    packet->next     = *cur;
+    *cur = packet;
     s->queue_len++;
 }
 
@@ -785,7 +727,7 @@ static int rtp_parse_one_packet(RTPDemuxContext *s, AVPacket *pkt,
                                 uint8_t **bufptr, int len)
 {
     uint8_t *buf = bufptr ? *bufptr : NULL;
-    int ret, flags = 0;
+    int flags = 0;
     uint32_t timestamp;
     int rv = 0;
 
@@ -796,7 +738,7 @@ static int rtp_parse_one_packet(RTPDemuxContext *s, AVPacket *pkt,
         if (s->prev_ret <= 0)
             return rtp_parse_queued_packet(s, pkt);
         /* return the next packets, if any */
-        if (s->st && s->handler && s->handler->parse_packet) {
+        if (s->handler && s->handler->parse_packet) {
             /* timestamp should be overwritten by parse_packet, if not,
              * the packet is left with pts == AV_NOPTS_VALUE */
             timestamp = RTP_NOTS_VALUE;
@@ -805,19 +747,6 @@ static int rtp_parse_one_packet(RTPDemuxContext *s, AVPacket *pkt,
                                                  flags);
             finalize_packet(s, pkt, timestamp);
             return rv;
-        } else {
-            // TODO: Move to a dynamic packet handler (like above)
-            if (s->read_buf_index >= s->read_buf_size)
-                return AVERROR(EAGAIN);
-            ret = ff_mpegts_parse_packet(s->ts, pkt, s->buf + s->read_buf_index,
-                                         s->read_buf_size - s->read_buf_index);
-            if (ret < 0)
-                return AVERROR(EAGAIN);
-            s->read_buf_index += ret;
-            if (s->read_buf_index < s->read_buf_size)
-                return 1;
-            else
-                return 0;
         }
     }
 
@@ -880,7 +809,10 @@ static int rtp_parse_one_packet(RTPDemuxContext *s, AVPacket *pkt,
 int ff_rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
                         uint8_t **bufptr, int len)
 {
-    int rv = rtp_parse_one_packet(s, pkt, bufptr, len);
+    int rv;
+    if (s->srtp_enabled && bufptr && ff_srtp_decrypt(&s->srtp, *bufptr, &len) < 0)
+        return -1;
+    rv = rtp_parse_one_packet(s, pkt, bufptr, len);
     s->prev_ret = rv;
     while (rv == AVERROR(EAGAIN) && has_next_packet(s))
         rv = rtp_parse_queued_packet(s, pkt);
@@ -890,9 +822,7 @@ int ff_rtp_parse_packet(RTPDemuxContext *s, AVPacket *pkt,
 void ff_rtp_parse_close(RTPDemuxContext *s)
 {
     ff_rtp_reset_packet_queue(s);
-    if (!strcmp(ff_rtp_enc_name(s->payload_type), "MP2T")) {
-        ff_mpegts_parse_close(s->ts);
-    }
+    ff_srtp_free(&s->srtp);
     av_free(s);
 }