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RTMP packets with one-byte header use previous packet timestamp difference, so
track timestamp difference as well. Patch by Sergiy (mail.composeAddress("piratfm","gmail.com")) Originally committed as revision 20714 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -93,7 +93,7 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
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hdr >>= 6;
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if (hdr == RTMP_PS_ONEBYTE) {
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timestamp = prev_pkt[channel_id].timestamp;
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timestamp = prev_pkt[channel_id].ts_delta;
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} else {
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if (url_read_complete(h, buf, 3) != 3)
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return AVERROR(EIO);
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@ -116,9 +116,10 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
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return AVERROR(EIO);
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timestamp = AV_RB32(buf);
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}
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if (hdr != RTMP_PS_TWELVEBYTES)
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timestamp += prev_pkt[channel_id].timestamp;
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}
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if (hdr != RTMP_PS_TWELVEBYTES)
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timestamp += prev_pkt[channel_id].timestamp;
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if (ff_rtmp_packet_create(p, channel_id, type, timestamp, data_size))
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return -1;
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p->extra = extra;
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@ -126,6 +127,7 @@ int ff_rtmp_packet_read(URLContext *h, RTMPPacket *p,
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prev_pkt[channel_id].channel_id = channel_id;
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prev_pkt[channel_id].type = type;
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prev_pkt[channel_id].data_size = data_size;
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prev_pkt[channel_id].ts_delta = timestamp - prev_pkt[channel_id].timestamp;
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prev_pkt[channel_id].timestamp = timestamp;
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prev_pkt[channel_id].extra = extra;
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while (data_size > 0) {
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@ -151,6 +153,7 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
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uint8_t pkt_hdr[16], *p = pkt_hdr;
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int mode = RTMP_PS_TWELVEBYTES;
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int off = 0;
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pkt->ts_delta = pkt->timestamp - prev_pkt[pkt->channel_id].timestamp;
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//TODO: header compression
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if (pkt->channel_id < 64) {
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@ -165,7 +168,7 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
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if (mode != RTMP_PS_ONEBYTE) {
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uint32_t timestamp = pkt->timestamp;
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if (mode != RTMP_PS_TWELVEBYTES)
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timestamp -= prev_pkt[pkt->channel_id].timestamp;
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timestamp = pkt->ts_delta;
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bytestream_put_be24(&p, timestamp >= 0xFFFFFF ? 0xFFFFFF : timestamp);
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if (mode != RTMP_PS_FOURBYTES) {
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bytestream_put_be24(&p, pkt->data_size);
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@ -200,6 +203,7 @@ int ff_rtmp_packet_create(RTMPPacket *pkt, int channel_id, RTMPPacketType type,
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pkt->type = type;
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pkt->timestamp = timestamp;
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pkt->extra = 0;
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pkt->ts_delta = 0;
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return 0;
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}
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@ -75,7 +75,8 @@ enum RTMPPacketSize {
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typedef struct RTMPPacket {
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uint8_t channel_id; ///< RTMP channel ID (nothing to do with audio/video channels though)
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RTMPPacketType type; ///< packet payload type
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uint32_t timestamp; ///< packet full timestamp or timestamp increment to the previous one in milliseconds (latter only for media packets)
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uint32_t timestamp; ///< packet full timestamp
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uint32_t ts_delta; ///< timestamp increment to the previous one in milliseconds (latter only for media packets)
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uint32_t extra; ///< probably an additional channel ID used during streaming data
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uint8_t *data; ///< packet payload
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int data_size; ///< packet payload size
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