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99 lines
4 KiB
Python
99 lines
4 KiB
Python
import multiprocessing
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import traceback
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import cv2
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import numpy as np
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from facelib import LandmarksProcessor
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from samplelib import (SampleGeneratorBase, SampleHost, SampleProcessor,
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SampleType)
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from utils import iter_utils
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from utils import mp_utils
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'''
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arg
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output_sample_types = [
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[SampleProcessor.TypeFlags, size, (optional) {} opts ] ,
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...
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]
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'''
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class SampleGeneratorFace(SampleGeneratorBase):
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def __init__ (self, samples_path, debug=False, batch_size=1,
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random_ct_samples_path=None,
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sample_process_options=SampleProcessor.Options(),
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output_sample_types=[],
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add_sample_idx=False,
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**kwargs):
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super().__init__(samples_path, debug, batch_size)
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self.sample_process_options = sample_process_options
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self.output_sample_types = output_sample_types
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self.add_sample_idx = add_sample_idx
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samples_host = SampleHost.mp_host (SampleType.FACE, self.samples_path)
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self.samples_len = len(samples_host.get_list())
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if self.samples_len == 0:
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raise ValueError('No training data provided.')
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index_host = mp_utils.IndexHost(self.samples_len)
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if random_ct_samples_path is not None:
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ct_samples_host = SampleHost.mp_host (SampleType.FACE, random_ct_samples_path)
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ct_index_host = mp_utils.IndexHost( len(ct_samples_host.get_list()) )
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else:
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ct_samples_host = None
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ct_index_host = None
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if self.debug:
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self.generators_count = 1
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self.generators = [iter_utils.ThisThreadGenerator ( self.batch_func, (samples_host.create_cli(), index_host.create_cli(), ct_samples_host.create_cli() if ct_index_host is not None else None, ct_index_host.create_cli() if ct_index_host is not None else None) )]
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else:
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self.generators_count = np.clip(multiprocessing.cpu_count(), 2, 4)
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self.generators = [iter_utils.SubprocessGenerator ( self.batch_func, (samples_host.create_cli(), index_host.create_cli(), ct_samples_host.create_cli() if ct_index_host is not None else None, ct_index_host.create_cli() if ct_index_host is not None else None), start_now=True ) for i in range(self.generators_count) ]
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self.generator_counter = -1
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#overridable
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def get_total_sample_count(self):
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return self.samples_len
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def __iter__(self):
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return self
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def __next__(self):
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self.generator_counter += 1
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generator = self.generators[self.generator_counter % len(self.generators) ]
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return next(generator)
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def batch_func(self, param ):
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samples, index_host, ct_samples, ct_index_host = param
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bs = self.batch_size
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while True:
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batches = None
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indexes = index_host.get(bs)
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ct_indexes = ct_index_host.get(bs) if ct_samples is not None else None
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for n_batch in range(bs):
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sample_idx = indexes[n_batch]
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sample = samples[ sample_idx ]
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ct_sample = ct_samples[ ct_indexes[n_batch] ] if ct_samples is not None else None
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try:
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x, = SampleProcessor.process ([sample], self.sample_process_options, self.output_sample_types, self.debug, ct_sample=ct_sample)
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except:
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raise Exception ("Exception occured in sample %s. Error: %s" % (sample.filename, traceback.format_exc() ) )
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if batches is None:
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batches = [ [] for _ in range(len(x)) ]
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if self.add_sample_idx:
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batches += [ [] ]
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i_sample_idx = len(batches)-1
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for i in range(len(x)):
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batches[i].append ( x[i] )
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if self.add_sample_idx:
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batches[i_sample_idx].append (sample_idx)
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yield [ np.array(batch) for batch in batches]
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