Class Encoder2x

Test/testlib/encoder.py:261–354

This class wraps the latest astcenc interface, supported from the 2.0 release or later, which broke argument compatibility with the earlier 1.x series.

class Encoder2x(EncoderBase):
    '''
    This class wraps the latest astcenc interface, supported from the 2.0
    release or later, which broke argument compatibility with the earlier
    1.x series.
    '''
    version = 'main'

    remap_color_switches = {
        'ldr': '-tl',
        'ldrs': '-ts',
        'hdr': '-th',
        'hdra': '-tH'
    }

    remap_output_types = {
        'ldr': '.png',
        'ldrs': '.png',
        'hdr': '.exr',
        'hdra': '.exr'
    }

    def __init__(self, variant: str, binary_path: Optional[Path] = None):
        name = f'astcenc-{variant}-{self.version}'

        if binary_path is None:
            binary = 'astcenc'
            post = f'-{variant}' if variant != 'universal' else ''
            ext = '.exe' if os.name == 'nt' else ''
            binary_path = Path('./') / 'bin' / f'{binary}{post}{ext}'

        super().__init__(name, variant, binary_path)

    def build_cli(self, image, block_size='6x6', preset='-thorough',
                  keep_output=True, threads=None):
        operation = self.remap_color_switches[image.color_profile]

        src_path = image.file_path

        if keep_output:
            extension = self.remap_output_types[image.color_profile]

            dst_file = f'{image.file_path_out.stem}{extension}'

            dst_dir = image.file_path_out.parent
            dst_dir = dst_dir / self.name / preset[1:] / block_size
            dst_dir.mkdir(parents=True, exist_ok=True)

            dst_path = str(dst_dir / dst_file)

        else:
            if sys.platform == 'win32':
                dst_path = 'nul'
            else:
                dst_path = '/dev/null'

        command = [
            str(self.binary_path), operation, str(src_path), str(dst_path),