- * Utility function to access log2_chroma_w log2_chroma_h from
- * the pixel format AVPixFmtDescriptor.
- *
- * This function asserts that pix_fmt is valid. See av_pix_fmt_get_chroma_sub_sample
- * for one that returns a failure code and continues in case of invalid
- * pix_fmts.
- *
- * @param[in] pix_fmt the pixel format
- * @param[out] h_shift store log2_chroma_w
- * @param[out] v_shift store log2_chroma_h
- *
- * @see av_pix_fmt_get_chroma_sub_sample