-- v2: mf/tests: Dump image samples with a BMP header and RGB data. mf/tests: Rename transform frame dumps to BMP. mf/tests: Check all produced output IMFSample at the same time. mf/tests: Factor IMFSample attributes checks in check_mf_sample. mf/tests: Factor IMFSample checks in a check_mf_sample helper. mf/tests: Introduce a new dump_mf_sample helper. mf/tests: Introduce a new load_resource helper. mf/tests: Factor IMFTransform_ProcessOutput checks together. mf/tests: Use separate variables for input / output samples. mf: Validate sample copier ProcessOutput count parameter.