def generate_frames(ds):
"""Yield decompressed pixel data frames as :class:`numpy.ndarray`.
.. deprecated:: 1.2
Use
:func:`~pydicom.pixel_data_handlers.pylibjpeg_handler.generate_frames`
instead
Parameters
----------
ds : pydicom.dataset.Dataset
The dataset containing the pixel data.
Yields
------
numpy.ndarray
A single frame of the decompressed pixel data.
"""
try:
import pydicom
except ImportError:
raise RuntimeError("'generate_frames' requires the pydicom package")
from pydicom.encaps import generate_pixel_data_frame
from pydicom.pixel_data_handlers.util import pixel_dtype
decoders = get_pixel_data_decoders()
decode = decoders[ds.file_meta.TransferSyntaxUID]
p_interp = ds.PhotometricInterpretation
nr_frames = getattr(ds, 'NumberOfFrames', 1)
for frame in generate_pixel_data_frame(ds.PixelData, nr_frames):
arr = decode(frame, ds.group_dataset(0x0028)).view(pixel_dtype(ds))
yield reshape_frame(ds, arr)
HAVE_RLE = False
from pydicom import config
from pydicom.encaps import generate_pixel_data_frame
from pydicom.pixel_data_handlers.util import (pixel_dtype, get_expected_length,
reshape_pixel_array,
get_j2k_parameters)
from pydicom.uid import (JPEGBaseline8Bit, JPEGExtended12Bit, JPEGLosslessP14,
JPEGLosslessSV1, JPEGLSLossless, JPEGLSNearLossless,
JPEG2000Lossless, JPEG2000, RLELossless, UID)
LOGGER = logging.getLogger("pydicom")
HANDLER_NAME = "pylibjpeg"
if HAVE_PYLIBJPEG:
_DECODERS = get_pixel_data_decoders()
_LIBJPEG_SYNTAXES = [
JPEGBaseline8Bit, JPEGExtended12Bit, JPEGLosslessP14, JPEGLosslessSV1,
JPEGLSLossless, JPEGLSNearLossless
]
_OPENJPEG_SYNTAXES = [JPEG2000Lossless, JPEG2000]
_RLE_SYNTAXES = [RLELossless]
SUPPORTED_TRANSFER_SYNTAXES = (_LIBJPEG_SYNTAXES + _OPENJPEG_SYNTAXES +
_RLE_SYNTAXES)
DEPENDENCIES = {"numpy": ("http://www.numpy.org/", "NumPy")}
def is_available() -> bool:
"""Return ``True`` if the handler has its dependencies met."""
import pytest
try:
import pydicom
import pydicom.config
HAS_PYDICOM = True
except ImportError as exc:
HAS_PYDICOM = False
from pylibjpeg.data import get_indexed_datasets
from pylibjpeg.pydicom.utils import get_j2k_parameters, generate_frames
from pylibjpeg.utils import get_pixel_data_decoders
decoders = get_pixel_data_decoders()
HAS_PLUGINS = bool(decoders)
HAS_JPEG_PLUGIN = '1.2.840.10008.1.2.4.50' in decoders
HAS_JPEG_LS_PLUGIN = '1.2.840.10008.1.2.4.80' in decoders
HAS_JPEG_2K_PLUGIN = '1.2.840.10008.1.2.4.90' in decoders
RUN_JPEG = HAS_JPEG_PLUGIN and HAS_PYDICOM
RUN_JPEGLS = HAS_JPEG_LS_PLUGIN and HAS_PYDICOM
RUN_JPEG2K = HAS_JPEG_2K_PLUGIN and HAS_PYDICOM
PY_VERSION = sys.version[:2]
@pytest.mark.skipif(not HAS_PYDICOM or HAS_PLUGINS, reason="Plugins available")
class TestNoPlugins:
"""Test interactions with no plugins."""