public bool CanSendPacket(RtmpMessage message, long pending)
{
IRtmpEvent body = message.body;
if (!(body is VideoData))
{
return(true);
}
VideoData data = body as VideoData;
FrameType frameType = data.FrameType;
bool flag = false;
switch (this._state)
{
case FrameDropperState.SEND_ALL:
return(true);
case FrameDropperState.SEND_INTERFRAMES:
if (frameType != FrameType.KEYFRAME)
{
if (frameType == FrameType.INTERFRAME)
{
flag = true;
}
return(flag);
}
if (pending == 0L)
{
this._state = FrameDropperState.SEND_ALL;
}
return(true);
case FrameDropperState.SEND_KEYFRAMES:
flag = frameType == FrameType.KEYFRAME;
if (flag && (pending == 0L))
{
this._state = FrameDropperState.SEND_KEYFRAMES_CHECK;
}
return(flag);
case FrameDropperState.SEND_KEYFRAMES_CHECK:
flag = frameType == FrameType.KEYFRAME;
if (flag && (pending == 0L))
{
this._state = FrameDropperState.SEND_INTERFRAMES;
}
return(flag);
}
return(flag);
}
public bool CanSendPacket(RtmpMessage message, long pending) {
IRtmpEvent packet = message.body;
if (!(packet is VideoData)) {
// We currently only drop video packets.
return true;
}
VideoData video = packet as VideoData;
FrameType type = video.FrameType;
bool result = false;
switch (_state) {
case FrameDropperState.SEND_ALL:
// All packets will be sent.
result = true;
break;
case FrameDropperState.SEND_INTERFRAMES:
// Only keyframes and interframes will be sent.
if (type == FrameType.Keyframe) {
if (pending == 0) {
// Send all frames from now on.
_state = FrameDropperState.SEND_ALL;
}
result = true;
} else if (type == FrameType.Interframe) {
result = true;
}
break;
case FrameDropperState.SEND_KEYFRAMES:
// Only keyframes will be sent.
result = (type == FrameType.Keyframe);
if (result && pending == 0) {
// Maybe switch back to SEND_INTERFRAMES after the next keyframe
_state = FrameDropperState.SEND_KEYFRAMES_CHECK;
}
break;
case FrameDropperState.SEND_KEYFRAMES_CHECK:
// Only keyframes will be sent.
result = (type == FrameType.Keyframe);
if (result && pending == 0) {
// Continue with sending interframes as well
_state = FrameDropperState.SEND_INTERFRAMES;
}
break;
default:
break;
}
return result;
}
public void DropPacket(RtmpMessage message)
{
IRtmpEvent body = message.body;
if (body is VideoData)
{
VideoData data = body as VideoData;
FrameType frameType = data.FrameType;
switch (this._state)
{
case FrameDropperState.SEND_ALL:
if (frameType != FrameType.DISPOSABLE_INTERFRAME)
{
if (frameType == FrameType.INTERFRAME)
{
this._state = FrameDropperState.SEND_KEYFRAMES;
}
else if (frameType == FrameType.KEYFRAME)
{
this._state = FrameDropperState.SEND_KEYFRAMES;
}
break;
}
break;
case FrameDropperState.SEND_INTERFRAMES:
if (frameType != FrameType.INTERFRAME)
{
if (frameType == FrameType.KEYFRAME)
{
this._state = FrameDropperState.SEND_KEYFRAMES;
}
break;
}
this._state = FrameDropperState.SEND_KEYFRAMES_CHECK;
break;
case FrameDropperState.SEND_KEYFRAMES_CHECK:
if (frameType == FrameType.KEYFRAME)
{
this._state = FrameDropperState.SEND_KEYFRAMES;
}
break;
}
}
}
public bool CanSendPacket(RtmpMessage message, long pending)
{
IRtmpEvent packet = message.body;
if (!(packet is VideoData))
{
// We currently only drop video packets.
return(true);
}
VideoData video = packet as VideoData;
FrameType type = video.FrameType;
bool result = false;
switch (_state)
{
case FrameDropperState.SEND_ALL:
// All packets will be sent.
result = true;
break;
case FrameDropperState.SEND_INTERFRAMES:
// Only keyframes and interframes will be sent.
if (type == FrameType.Keyframe)
{
if (pending == 0)
{
// Send all frames from now on.
_state = FrameDropperState.SEND_ALL;
}
result = true;
}
else if (type == FrameType.Interframe)
{
result = true;
}
break;
case FrameDropperState.SEND_KEYFRAMES:
// Only keyframes will be sent.
result = (type == FrameType.Keyframe);
if (result && pending == 0)
{
// Maybe switch back to SEND_INTERFRAMES after the next keyframe
_state = FrameDropperState.SEND_KEYFRAMES_CHECK;
}
break;
case FrameDropperState.SEND_KEYFRAMES_CHECK:
// Only keyframes will be sent.
result = (type == FrameType.Keyframe);
if (result && pending == 0)
{
// Continue with sending interframes as well
_state = FrameDropperState.SEND_INTERFRAMES;
}
break;
default:
break;
}
return(result);
}
public void Reset(FrameDropperState state)
{
_state = state;
}
public void DropPacket(RtmpMessage message)
{
IRtmpEvent packet = message.body;
if (!(packet is VideoData))
{
// Only check video packets.
return;
}
VideoData video = packet as VideoData;
FrameType type = video.FrameType;
switch (_state)
{
case FrameDropperState.SEND_ALL:
if (type == FrameType.DisposableInterframe)
{
// Remain in state, packet is safe to drop.
return;
}
else if (type == FrameType.Interframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
else if (type == FrameType.Keyframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
case FrameDropperState.SEND_INTERFRAMES:
if (type == FrameType.Interframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES_CHECK;
return;
}
else if (type == FrameType.Keyframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
case FrameDropperState.SEND_KEYFRAMES:
// Remain in state.
break;
case FrameDropperState.SEND_KEYFRAMES_CHECK:
if (type == FrameType.Keyframe)
{
// Switch back to sending keyframes, but don't move to SEND_INTERFRAMES afterwards.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
default:
break;
}
}
public void Reset(FrameDropperState state)
{
_state = state;
}
public void DropPacket(RtmpMessage message)
{
IRtmpEvent packet = message.body;
if (!(packet is VideoData))
{
// Only check video packets.
return;
}
VideoData video = packet as VideoData;
FrameType type = video.FrameType;
switch (_state)
{
case FrameDropperState.SEND_ALL:
if (type == FrameType.DisposableInterframe)
{
// Remain in state, packet is safe to drop.
return;
}
else if (type == FrameType.Interframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
else if (type == FrameType.Keyframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
case FrameDropperState.SEND_INTERFRAMES:
if (type == FrameType.Interframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES_CHECK;
return;
}
else if (type == FrameType.Keyframe)
{
// Drop all frames until the next keyframe.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
case FrameDropperState.SEND_KEYFRAMES:
// Remain in state.
break;
case FrameDropperState.SEND_KEYFRAMES_CHECK:
if (type == FrameType.Keyframe)
{
// Switch back to sending keyframes, but don't move to SEND_INTERFRAMES afterwards.
_state = FrameDropperState.SEND_KEYFRAMES;
return;
}
break;
default:
break;
}
}
