Write header for RTMP packets with channel_id >= 64 correctly

Originally committed as revision 20684 to svn://svn.ffmpeg.org/ffmpeg/trunk
15 years ago · b1eb53ab59
parent 59b6482a04
commit b1eb53ab59
1 changed files with 9 additions and 1 deletions
--- a/libavformat/rtmppkt.c
+++ b/libavformat/rtmppkt.c
@ -151,7 +151,15 @@ int ff_rtmp_packet_write(URLContext *h, RTMPPacket *pkt,
    int off = 0;

    //TODO: header compression
-    bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
+    if (pkt->channel_id < 64) {
+        bytestream_put_byte(&p, pkt->channel_id | (mode << 6));
+    } else if (pkt->channel_id < 64 + 256) {
+        bytestream_put_byte(&p, 0               | (mode << 6));
+        bytestream_put_byte(&p, pkt->channel_id - 64);
+    } else {
+        bytestream_put_byte(&p, 1               | (mode << 6));
+        bytestream_put_le16(&p, pkt->channel_id - 64);
+    }
    if (mode != RTMP_PS_ONEBYTE) {
        bytestream_put_be24(&p, pkt->timestamp >= 0xFFFFFF ? 0xFFFFFF : pkt->timestamp);
        if (mode != RTMP_PS_FOURBYTES) {