- struct VAResources {
- unsigned width, height;
- VASurfaceID surface;
- VAContextID context;
- VABufferID data_buffer;
- VAImage image;
- };
-
- // RAII wrapper to release VAResources on return (even on error).
- class ReleaseVAResources {
- public:
- ReleaseVAResources() : committed(true) {}
-
- ReleaseVAResources(MJPEGEncoder *mjpeg, const VAResources &resources)
- : mjpeg(mjpeg), resources(resources) {}
-
- ReleaseVAResources(ReleaseVAResources &) = delete;
-
- ReleaseVAResources(ReleaseVAResources &&other)
- : mjpeg(other.mjpeg), resources(other.resources), committed(other.committed) {
- other.commit();
- }
-
- ReleaseVAResources &operator= (ReleaseVAResources &) = delete;
-
- ReleaseVAResources &operator= (ReleaseVAResources &&other) {
- if (!committed) {
- mjpeg->release_va_resources(resources);
- }
- mjpeg = other.mjpeg;
- resources = std::move(other.resources);
- committed = other.committed;
- other.commit();
- return *this;
- }
-
- ~ReleaseVAResources()
- {
- if (!committed) {
- mjpeg->release_va_resources(resources);
- }
- }
-
- void commit() { committed = true; }
-
- private:
- MJPEGEncoder *mjpeg = nullptr;
- VAResources resources;
- bool committed = false;
- };
-