Method tobytes

src/__init__.py:13971–13999

Convert to binary image stream of desired type.

(self, output="png", jpg_quality=95)

                k += 1

    def tobytes(self, output="png", jpg_quality=95):
        '''
        Convert to binary image stream of desired type.
        '''
        valid_formats = {
                "png": 1,
                "pnm": 2,
                "pgm": 2,
                "ppm": 2,
                "pbm": 2,
                "pam": 3,
                "tga": 4,
                "tpic": 4,
                "psd": 5,
                "ps": 6,
                'jpg': 7,
                'jpeg': 7,
                }
        idx = valid_formats.get(output.lower(), None)
        if idx is None:
            raise ValueError(f"Image format {output} not in {tuple(valid_formats.keys())}")
        if self.alpha and idx in (2, 6, 7):
            raise ValueError("'{output}' cannot have alpha")
        if self.colorspace and self.colorspace.n > 3 and idx in (1, 2, 4):
            raise ValueError(f"unsupported colorspace for '{output}'")
        if idx == 7:
            self.set_dpi(self.xres, self.yres)
        barray = self._tobytes(idx, jpg_quality)
        return barray

    def set_dpi(self, xres, yres):
        """Set resolution in both dimensions."""