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Use AVBufferRefs to keep EGLImages and DRM FDs around for the lifetime of the frame

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This commit is contained in:
Cameron Gutman
2026-01-04 18:06:24 -06:00
parent 67cba9e397
commit 46c76534bc
8 changed files with 68 additions and 100 deletions
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19
app/streaming/video/ffmpeg-renderers/vaapi.cpp
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@@ -1162,11 +1162,6 @@ VAAPIRenderer::exportEGLImages(AVFrame *frame, EGLDisplay dpy,
return m_EglImageFactory.exportVAImages(frame, exportFlags, dpy, images);
}
void
VAAPIRenderer::freeEGLImages() {
m_EglImageFactory.freeEGLImages();
}
#endif
#ifdef HAVE_DRM
@@ -1224,14 +1219,26 @@ bool VAAPIRenderer::mapDrmPrimeFrame(AVFrame* frame, AVDRMFrameDescriptor* drmDe
}
}
// Add a buffer reference to the frame to automatically close the
// mapped FDs when the frame is no longer referenced.
frame->opaque_ref = av_buffer_create((uint8_t*)drmDescriptor, sizeof(*drmDescriptor),
freeDrmDescriptorBuffer,
frame->opaque_ref, // Chain any existing buffer
AV_BUFFER_FLAG_READONLY);
return true;
}
void VAAPIRenderer::unmapDrmPrimeFrame(AVDRMFrameDescriptor* drmDescriptor)
void VAAPIRenderer::freeDrmDescriptorBuffer(void* opaque, uint8_t* data)
{
auto drmDescriptor = (AVDRMFrameDescriptor*)data;
for (int i = 0; i < drmDescriptor->nb_objects; i++) {
close(drmDescriptor->objects[i].fd);
}
// Free any chained buffers
av_buffer_unref((AVBufferRef**)&opaque);
}
#endif