func PlayProcess(cs chan byte, loop *C.GMainLoop) {
wg := new(sync.WaitGroup)
sig_out := make(chan bool)
defer close(sig_out)
defer g_wg.Done()
if g_isOutOfOrder {
outOfOrder(g_list)
debug.FreeOSMemory()
}
start := g_list.Front()
end := g_list.Back()
e := g_list.Front()
for {
fpath, ok := e.Value.(string)
if ok {
// fmt.Printf("filename[%s]\n", fpath)
var pipeline *C.GstElement // 定义组件
var bus *C.GstBus
v0 := GString("playbin")
v1 := GString("play")
pipeline = C.gst_element_factory_make(v0, v1)
GFree(unsafe.Pointer(v0))
GFree(unsafe.Pointer(v1))
v2 := GString(fpath)
C.set_path(unsafe.Pointer(pipeline), v2)
GFree(unsafe.Pointer(v2))
// 得到 管道的消息总线
bus = C.pipeline_get_bus(unsafe.Pointer(pipeline))
if bus == (*C.GstBus)(nil) {
fmt.Println("GstBus element could not be created.Exiting.")
return
}
C.bus_add_watch(unsafe.Pointer(bus), unsafe.Pointer(loop))
C.mp3_ready(unsafe.Pointer(pipeline))
C.mp3_play(unsafe.Pointer(pipeline))
wg.Add(1)
go func(p *C.GstElement) {
defer wg.Done()
// 开始循环
C.g_main_loop_run(loop)
C.mp3_stop(unsafe.Pointer(p))
C.object_unref(unsafe.Pointer(p))
e = e.Next()
if e == nil {
sig_out <- true
} else {
sig_out <- false
}
}(pipeline)
lb := true
for lb {
select {
case op := <-cs:
switch op {
case 's':
C.mp3_pause(unsafe.Pointer(pipeline))
case 'r':
C.mp3_play(unsafe.Pointer(pipeline))
case 'n':
if e != end {
e = e.Next()
}
C.g_main_loop_quit(loop)
case 'p':
if e != start {
e = e.Prev()
}
C.g_main_loop_quit(loop)
case 'q':
C.g_main_loop_quit(loop)
<-sig_out
wg.Wait()
return
}
case c := <-sig_out:
if c {
wg.Wait()
return
} else {
lb = false
}
}
}
wg.Wait()
} else {
// 路径非法
return
}
}
}
func mp3_play_process(cs chan byte, loop *C.GMainLoop) {
wg := new(sync.WaitGroup)
sig_in := make(chan bool)
sig_out := make(chan bool)
defer close(sig_in)
defer close(sig_out)
defer g_wg.Done()
if g_isOutOfOrder {
outOfOrder(g_list)
debug.FreeOSMemory()
}
start := g_list.Front()
end := g_list.Back()
e := g_list.Front()
for {
fpath, ok := e.Value.(string)
if ok {
// fmt.Printf("filename[%s]\n", fpath)
var pipeline, source, decoder, sink *C.GstElement // 定义组件
var bus *C.GstBus
switch filepath.Ext(fpath) {
case ".mp3":
v3 := GString("mad")
v4 := GString("mad-decoder")
decoder = C.gst_element_factory_make(v3, v4)
GFree(C.gpointer(v4))
GFree(C.gpointer(v3))
case ".wav":
v3 := GString("wavparse")
v4 := GString("parser")
decoder = C.gst_element_factory_make(v3, v4)
GFree(C.gpointer(v3))
GFree(C.gpointer(v4))
case ".ogg":
// v3 := GString("oggparse")
// defer GFree(C.gpointer(v3))
// v4 := GString("ogg-parser")
// defer GFree(C.gpointer(v4))
// decoder = C.gst_element_factory_make(v3, v4)
fallthrough
default:
return
}
// fmt.Printf("FileName[%s]FileSize[%d]Dir[%v]\n", path, info.Size(), info.IsDir())
// 创建管道和组件
v0 := GString("audio-player")
pipeline = C.gst_pipeline_new(v0)
GFree(C.gpointer(v0))
v1 := GString("filesrc")
v2 := GString("file-source")
source = C.gst_element_factory_make(v1, v2)
GFree(C.gpointer(v1))
GFree(C.gpointer(v2))
// sink = gst_element_factory_make("autoaudiosink","audio-output");
v5 := GString("alsasink")
v6 := GString("alsa-output")
sink = C.gst_element_factory_make(v5, v6)
GFree(C.gpointer(v6))
GFree(C.gpointer(v5))
if pipeline == (*C.GstElement)(nil) ||
source == (*C.GstElement)(nil) ||
decoder == (*C.GstElement)(nil) ||
sink == (*C.GstElement)(nil) {
fmt.Println("One element could not be created.Exiting.")
}
// 设置 source的location 参数。即 文件地址.
v7 := GString("location")
cpath := GString(fpath)
C.obj_set(unsafe.Pointer(source),
unsafe.Pointer(v7), unsafe.Pointer(cpath))
GFree(C.gpointer(v7))
GFree(C.gpointer(cpath))
// 得到 管道的消息总线
bus = C.pipeline_get_bus(unsafe.Pointer(pipeline))
if bus == (*C.GstBus)(nil) {
fmt.Println("GstBus element could not be created.Exiting.")
return
}
// 添加消息监视器
C.bus_add_watch(unsafe.Pointer(bus), unsafe.Pointer(loop))
C.gst_object_unref(C.gpointer(bus))
// 把组件添加到管道中.管道是一个特殊的组件，可以更好的让数据流动
C.bin_add_many(unsafe.Pointer(pipeline),
unsafe.Pointer(source), unsafe.Pointer(decoder),
unsafe.Pointer(sink))
// 依次连接组件
C.element_link_many(unsafe.Pointer(source),
unsafe.Pointer(decoder), unsafe.Pointer(sink))
// 开始播放
C.mp3_ready(unsafe.Pointer(pipeline))
C.mp3_play(unsafe.Pointer(pipeline))
wg.Add(1)
go func(p *C.GstElement) {
defer wg.Done()
// 开始循环
C.g_main_loop_run(loop)
C.mp3_stop(unsafe.Pointer(p))
C.object_unref(unsafe.Pointer(p))
select {
case c := <-sig_in:
if c {
return
}
default:
e = e.Next()
if e == nil {
sig_out <- true
return
}
}
sig_out <- false
}(pipeline)
lb := true
for lb {
select {
case op := <-cs:
switch op {
case 's':
C.mp3_pause(unsafe.Pointer(pipeline))
case 'r':
C.mp3_play(unsafe.Pointer(pipeline))
case 'n':
if e != end {
e = e.Next()
}
C.g_main_loop_quit(loop)
sig_in <- false
case 'p':
if e != start {
e = e.Prev()
}
C.g_main_loop_quit(loop)
sig_in <- false
case 'q':
C.g_main_loop_quit(loop)
sig_in <- true
wg.Wait()
return
}
case c := <-sig_out:
if c {
return
} else {
lb = false
}
}
}
wg.Wait()
}
}
}