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[host] app: wait for space in the frame queue

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We must always wait for space in the frame queue so that we do not
overwrite memory that is already queued and may be in use by a client.
This commit is contained in:
Geoffrey McRae 2021-07-12 17:30:06 +10:00
parent 7d0b9711bd
commit ce459c24ce
1 changed files with 12 additions and 7 deletions
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19
host/src/app.c
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@ -146,6 +146,18 @@ static bool sendFrame(void)
{
CaptureFrame frame = { 0 };
bool repeatFrame = false;
//wait until there is room in the queue
while(app.state == APP_STATE_RUNNING)
if(lgmpHostQueuePending(app.frameQueue) == LGMP_Q_FRAME_LEN)
{
usleep(1);
continue;
}
if (app.state != APP_STATE_RUNNING)
return false;
switch(app.iface->waitFrame(&frame, app.maxFrameSize))
{
case CAPTURE_RESULT_OK:
@ -249,13 +261,6 @@ static int frameThread(void * opaque)
while(app.state == APP_STATE_RUNNING)
{
//wait until there is room in the queue
if(lgmpHostQueuePending(app.frameQueue) == LGMP_Q_FRAME_LEN)
{
usleep(1);
continue;
}
if (!sendFrame())
break;
}