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lal/rtmp/stream.go

65 lines
892 B
Go

package rtmp
import "github.com/q191201771/lal/log"
var initMsgLen = 4096
type Header struct {
csid int
timestamp int
msgLen int
msgTypeId int
msgStreamId int
}
type StreamMsg struct {
buf []byte
b int
e int
}
type Stream struct {
header Header
msgLen int // TODO chef: needed? dup with Header's
timestampAbs int
msg StreamMsg
}
func NewStream() *Stream {
return &Stream{
msg: StreamMsg{
buf: make([]byte, initMsgLen),
},
}
}
func (msg *StreamMsg) reserve(n int) {
nn := cap(msg.buf)
if nn > n {
return
}
for nn < n {
nn <<= 1
}
msg.buf = make([]byte, nn)
log.Debugf("reserve. %d %d", n, nn)
}
func (msg *StreamMsg) len() int {
return msg.e - msg.b
}
func (msg *StreamMsg) produced(n int) {
msg.e += n
}
func (msg *StreamMsg) consumed(n int) {
msg.b += n
}
func (msg *StreamMsg) clear() {
msg.b = 0
msg.e = 0
}