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About to make a big change, so want to commit now

This commit is contained in:
saxon 2018-07-11 14:16:19 +09:30
parent 072c065224
commit 9c67bc06a3
1 changed files with 18 additions and 24 deletions
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42
rtmp/rtmp.go
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@ -50,6 +50,10 @@ import (
"bitbucket.org/ausocean/av/tools"
)
const (
minDataSize = 11
)
// Session provides an interface for sending flv tags over rtmp.
type Session interface {
Open() error
@ -79,11 +83,14 @@ func NewSession(url string, connectTimeout uint) Session {
// See #define AVC(str) {str, sizeof(str)-1} in amf.h
func AVC(str string) C.AVal {
var aval C.AVal
aval.av_val = (*C.char)(unsafe.Pointer(&([]byte(str)[0])))
aval.av_len = (C.int)(int(unsafe.Sizeof([]byte(str))-1))
aval.av_val = C.CString(str)
aval.av_len = C.int(len(str))
return aval
}
// av_setDataFrame is a static const global in rtmp.c
var av_setDataFrame = AVC("@setDataFrame")
// Open establishes an rtmp connection with the url passed into the
// constructor
func (s *session) Open() error {
@ -98,10 +105,13 @@ func (s *session) Open() error {
return nil
}
func byteSliceToCArr(buf []byte) *C.char {
return (*C.char)(unsafe.Pointer(&buf[0]))
}
func (s *session) rtmpWrite(r *C.RTMP, buf []byte) int {
var pkt *C.RTMPPacket = &r.m_write
var pend, enc *C.char
var pend, enc []byte
size := len(buf)
s2 := size
var ret, num int
@ -111,7 +121,7 @@ func (s *session) rtmpWrite(r *C.RTMP, buf []byte) int {
for s2 > 0 {
if pkt.m_nBytesRead == 0 {
if size < 11 {
if size < minDataSize {
log.Printf("size: %d\n", size)
log.Printf("too small \n")
return 0
@ -123,29 +133,15 @@ func (s *session) rtmpWrite(r *C.RTMP, buf []byte) int {
s2 -= 13
}
// pkt.m_packetType = *buf++
buf = buf[1:]
pkt.m_packetType = C.uchar(buf[0])
cChar := (*C.char)(unsafe.Pointer(&buf[0]))
pkt.m_nBodySize = C.AMF_DecodeInt24(cChar)
// C: buf+=3
pkt.m_nBodySize = C.AMF_DecodeInt24(byteSliceToCArr(buf))
buf = buf[3:]
cChar = (*C.char)(unsafe.Pointer(&buf[0]))
pkt.m_nTimeStamp = C.AMF_DecodeInt24(cChar)
// C: buf+=3
pkt.m_nTimeStamp = C.AMF_DecodeInt24(byteSliceToCArr(buf))
buf = buf[3:]
// C: pkt->m_nTimeStamp |= *buf++ << 24;
buf = buf[1:]
pkt.m_nTimeStamp |= C.uint( buf[0] << 24 )
// C: buf+=3
buf = buf[3:]
s2 -= 11
if ((pkt.m_packetType == C.RTMP_PACKET_TYPE_AUDIO ||
@ -161,7 +157,7 @@ func (s *session) rtmpWrite(r *C.RTMP, buf []byte) int {
}
// C: if (!RTMPPacket_Alloc(pkt, pkt->m_nBodySize))
if !tools.IntToBool(int( C.RTMPPacket_Alloc(pkt, pkt.m_nBodySize))) {
if int( C.RTMPPacket_Alloc(pkt, pkt.m_nBodySize)) == 0 {
log.Println("Failed to allocated packet")
return 0
}
@ -171,10 +167,8 @@ func (s *session) rtmpWrite(r *C.RTMP, buf []byte) int {
// pend = enc + pkt.m_nBodySize
pend = (*C.char)(unsafe.Pointer( uintptr(unsafe.Pointer(enc)) +
( unsafe.Sizeof(C.char(0x00)) * (uintptr(pkt.m_nBodySize)) ) ))
if pkt.m_packetType == C.RTMP_PACKET_TYPE_INFO {
// av_setDataFrame is a static const global in rtmp.c
av_setDataFrame := AVC("@setDataFrame")
if pkt.m_packetType == C.RTMP_PACKET_TYPE_INFO {
enc = C.AMF_EncodeString(enc, pend, &av_setDataFrame )
// C-code: pkt.m_nBytesRead enc - pkt.m_body