Dynamically configuring memory bandwidth for image generation

A device for image generation, the device comprising:

• one or more processors;
• an image signal processor;
• system memory;
• and
• a memory controller for the system memory,
• wherein the one or more processors are configured to:
• receive, from an application framework operating at the one or more processors, a request to accommodate a preview stream and a snapshot stream, the request to accommodate comprising an instruction to configure the system memory to allocate a bandwidth between the image signal processor and the system memory that accommodates the preview stream and the snapshot stream;
• responsive to receiving the request to accommodate the preview stream and the snapshot stream, output, to the memory controller, a request to increase a bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream,
• wherein the request to increase the bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream refrains from allocating bandwidth between the image signal processor and the system memory to accommodate the snapshot stream;
• and
• responsive to receiving, from the application framework, a request to generate an image, for storage at the system memory, that corresponds to an image being output by the preview stream, output, to the memory controller, a request to further increase the bandwidth allocated between the image signal processor and the system memory to accommodate the snapshot stream.

A non-transitory computer-readable medium having instructions stored thereon that, when executed, cause one or more processors to:

• receive, from an application framework operating at the one or more processors, a request to accommodate a preview stream and a snapshot stream, the request to accommodate comprising an instruction to configure a system memory to allocate a bandwidth between an image signal processor and the system memory that accommodates the preview stream and the snapshot stream;
• responsive to receiving the request to accommodate the preview stream and the snapshot stream, output, to a memory controller for the system memory, a request to increase a bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream,
• wherein the request to increase the bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream refrains from allocating bandwidth between the image signal processor and the system memory to accommodate the snapshot stream;
• and
• responsive to receiving, from the application framework, a request to generate an image, for storage at the system memory, that corresponds to an image being output by the preview stream, output, to the memory controller, a request to further increase the bandwidth allocated between the image signal processor and the system memory to accommodate the snapshot stream.

A device for image generation, the device comprising:

• means for receiving, from an application framework, a request to accommodate a preview stream and a snapshot stream, the request to accommodate comprising an instruction to configure a system memory to allocate a bandwidth between an image signal processor and the system memory that accommodates the preview stream and the snapshot stream;
• means for outputting, to a memory controller for the system memory, a request to increase a bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream in response to receiving the request to accommodate the preview stream and the snapshot stream,
• wherein the request to increase the bandwidth allocated between the image signal processor and the system memory to accommodate the preview stream refrains from allocating bandwidth between the image signal processor and the system memory to accommodate the snapshot stream;
• and
• means for outputting, to the memory controller, a request to further increase the bandwidth allocated between the image signal processor and the system memory to accommodate the snapshot stream in response to receiving, from the application framework, a request to generate an image, for storage at the system memory, that corresponds to an image being output by the preview stream.