Return the size in bytes of the amount of data required to store an
image with the given parameters.
@param pix_fmt the pixel format of the image
@param width the width of the image in pixels
@param height the height of the image in pixels
@param align the assumed linesize alignment
@return the buffer size in bytes, a negative error code in case of failure
Return the size in bytes of the amount of data required to store an image with the given parameters.
@param pix_fmt the pixel format of the image @param width the width of the image in pixels @param height the height of the image in pixels @param align the assumed linesize alignment @return the buffer size in bytes, a negative error code in case of failure