Abstract: An example of an image processing method includes determining a first primary scene in a process of executing rendering processing on a first image, where the first primary scene is a frame buffer that executes a largest quantity of rendering operations in the process of rendering the first image by the electronic device; configuring a temporary frame buffer, where resolution of the temporary frame buffer is less than resolution of the first primary scene; and executing a first rendering operation on the temporary frame buffer when rendering processing is performed on the first image, where the first rendering operation is a rendering operation executed on the first primary scene indicated by an application program.

Abstract: The technology of this application relates to a content transmission protection method and a related device, to avoid leakage of an audio/video stream when a transmit end and a receive end perform authentication. The method includes, in a process of establishing a transmission link between a transmit end and a receive end, the transmit end performs authentication key exchange with the receive end to obtain an authentication key. The transmit end performs session key agreement with the receive end based on the authentication key to obtain a session key. The transmit end performs authorization control on the receive end after establishment of the transmission link between the transmit end and the receive end is completed. The transmit end sends an encrypted audio/video stream to the receive end after the transmit end completes authorization control on the receive end. The encrypted audio/video stream is encrypted based on the session key.

Abstract: Embodiments of this application disclose an image processing method and an electronic device, which relates to the field of image processing. A large quantity of rendering operations in a primary scene may be executed at a relatively small resolution, thereby achieving an effect of reducing rendering power consumption. A specific solution is: determining a first primary scene in a process of executing rendering processing on a first image, where the first primary scene is a frame buffer that executes a largest quantity of rendering operations in the process of rendering the first image by the electronic device; configuring a temporary frame buffer, where resolution of the temporary frame buffer is less than resolution of the first primary scene; and executing a first rendering operation on the temporary frame buffer when rendering processing is performed on the first image, where the first rendering operation is a rendering operation executed on the first primary scene indicated by an application program.

Abstract: The technology of this application relates to a content transmission protection method and a related device, to avoid leakage of an audio/video stream when a transmit end and a receive end perform authentication. The method includes, in a process of establishing a transmission link between a transmit end and a receive end, the transmit end performs authentication key exchange with the receive end to obtain an authentication key. The transmit end performs session key agreement with the receive end based on the authentication key to obtain a session key. The transmit end performs authorization control on the receive end after establishment of the transmission link between the transmit end and the receive end is completed. The transmit end sends an encrypted audio/video stream to the receive end after the transmit end completes authorization control on the receive end. The encrypted audio/video stream is encrypted based on the session key.