mirror of https://bitbucket.org/ausocean/av.git
146 lines
3.0 KiB
Go
146 lines
3.0 KiB
Go
/*
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NAME
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rtmp.go
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DESCRIPTION
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See Readme.md
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AUTHOR
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Saxon Nelson-Milton <saxon@ausocean.org>
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Dan Kortschak <dan@ausocean.org>
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LICENSE
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rtmp.go is Copyright (C) 2017 the Australian Ocean Lab (AusOcean)
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It is free software: you can redistribute it and/or modify them
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under the terms of the GNU General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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It is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with revid in gpl.txt. If not, see http://www.gnu.org/licenses.
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*/
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package rtmp
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/*
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#cgo CFLAGS: -I/usr/local/include/librtmp
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#cgo LDFLAGS: -lrtmp -lz
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#include <stdlib.h>
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#include <rtmp.h>
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RTMP* start_session(RTMP* rtmp, char* url, uint connect_timeout);
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int write_frame(RTMP* rtmp, char* data, uint data_length);
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int end_session(RTMP* rtmp);
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*/
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import "C"
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import (
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"errors"
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"strconv"
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"unsafe"
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)
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// Session provides an interface for sending flv tags over rtmp.
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type Session interface {
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Open() error
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Write([]byte) (int, error)
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Close() error
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}
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// session provides parameters required for an rtmp communication session.
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type session struct {
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rtmp *C.RTMP
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url string
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timeout uint
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}
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var _ Session = (*session)(nil)
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// NewSession returns a new session.
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func NewSession(url string, connectTimeout uint) Session {
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return &session{
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url: url,
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timeout: connectTimeout,
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}
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}
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// Open establishes an rtmp connection with the url passed into the
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// constructor
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func (s *session) Open() error {
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if s.rtmp != nil {
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return errors.New("rtmp: attempt to start already running session")
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}
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var err error
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s.rtmp, err = C.start_session(s.rtmp, C.CString(s.url), C.uint(s.timeout))
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if s.rtmp == nil {
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return err
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}
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return nil
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}
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func (s *session) rtmpWrite(rtmp *C.RTMP, data []byte) bool {
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}
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func (s *session) writeFrame(data []byte) uint {
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if !C.RTMP_IsConnected(rtmp) {
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return 1
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}
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// !C.RTMP_Write(s.rtmp, (const char*)(*C.char)(unsafe.Pointer(&data[0])), C.uint(dataLength))
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if rtmpWrite(s.rtmp, data) {
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return 2
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}
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return 0
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}
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// Write writes a frame (flv tag) to the rtmp connection
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func (s *session) Write(data []byte) (int, error) {
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if s.rtmp == nil {
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return 0, Err(3)
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}
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ret := s.writeFrame(data, len(data))
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if ret != 0 {
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return 0, Err(ret)
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}
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return len(data), nil
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}
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// Close terminates the rtmp connection
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func (s *session) Close() error {
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if s.rtmp == nil {
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return Err(3)
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}
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ret := C.end_session(s.rtmp)
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s.rtmp = nil
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if ret != 0 {
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return Err(ret)
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}
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return nil
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}
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var rtmpErrs = [...]string{
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1: "rtmp: not connected",
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2: "rtmp: write error",
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3: "rtmp: not started",
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}
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type Err uint
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func (e Err) Error() string {
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if 0 <= int(e) && int(e) < len(rtmpErrs) {
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s := rtmpErrs[e]
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if s != "" {
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return s
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}
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}
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return "rtmp: " + strconv.Itoa(int(e))
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}
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