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Fix a bunch of memory leaks in the VTRenderer

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It appears the leaked AVSampleBufferDisplayLayer may be causing the hang in #973
This commit is contained in:
Cameron Gutman 2023-09-11 20:49:35 -05:00
parent b968886594
commit 2ac7176787
1 changed files with 14 additions and 8 deletions
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20
app/streaming/video/ffmpeg-renderers/vt.mm
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@ -56,7 +56,7 @@ public:
}
virtual ~VTRenderer() override
{
{ @autoreleasepool {
// We may have overlay update blocks enqueued for execution.
// We must cancel those to avoid a UAF.
for (int i = 0; i < Overlay::OverlayMax; i++) {
@ -100,13 +100,19 @@ public:
for (int i = 0; i < Overlay::OverlayMax; i++) {
if (m_OverlayTextFields[i] != nullptr) {
[m_OverlayTextFields[i] removeFromSuperview];
[m_OverlayTextFields[i] release];
}
}
if (m_StreamView != nullptr) {
[m_StreamView removeFromSuperview];
[m_StreamView release];
}
if (m_DisplayLayer != nullptr) {
[m_DisplayLayer release];
}
}}
static
CVReturn
@ -252,7 +258,7 @@ public:
// Caller frees frame after we return
virtual void renderFrame(AVFrame* frame) override
{
{ @autoreleasepool {
OSStatus status;
CVPixelBufferRef pixBuf = reinterpret_cast<CVPixelBufferRef>(frame->data[3]);
@ -352,10 +358,10 @@ public:
[m_DisplayLayer enqueueSampleBuffer:sampleBuffer];
CFRelease(sampleBuffer);
}
}}
virtual bool initialize(PDECODER_PARAMETERS params) override
{
{ @autoreleasepool {
int err;
if (params->videoFormat & VIDEO_FORMAT_MASK_H264) {
@ -549,10 +555,10 @@ public:
}
return true;
}
}}
void updateOverlayOnMainThread(Overlay::OverlayType type)
{
{ @autoreleasepool {
// Lazy initialization for the overlay
if (m_OverlayTextFields[type] == nullptr) {
m_OverlayTextFields[type] = [[NSTextField alloc] initWithFrame:m_StreamView.bounds];
@ -584,7 +590,7 @@ public:
// Unhide if it's enabled
[m_OverlayTextFields[type] setHidden: !Session::get()->getOverlayManager().isOverlayEnabled(type)];
}
}}
virtual void notifyOverlayUpdated(Overlay::OverlayType type) override
{