File size: 5,828 Bytes
0c85e62 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | import torch
from PIL import Image
from comfy.cli_args import args, LatentPreviewMethod
from comfy.taesd.taesd import TAESD
from comfy.sd import VAE
import comfy.model_management
import folder_paths
import comfy.utils
import logging
default_preview_method = args.preview_method
MAX_PREVIEW_RESOLUTION = args.preview_size
VIDEO_TAES = ["taehv", "lighttaew2_2", "lighttaew2_1", "lighttaehy1_5", "taeltx_2"]
def preview_to_image(latent_image, do_scale=True):
if do_scale:
latents_ubyte = (((latent_image + 1.0) / 2.0).clamp(0, 1) # change scale from -1..1 to 0..1
.mul(0xFF) # to 0..255
)
else:
latents_ubyte = (latent_image.clamp(0, 1)
.mul(0xFF) # to 0..255
)
if comfy.model_management.directml_enabled:
latents_ubyte = latents_ubyte.to(dtype=torch.uint8)
latents_ubyte = latents_ubyte.to(device="cpu", dtype=torch.uint8, non_blocking=comfy.model_management.device_supports_non_blocking(latent_image.device))
return Image.fromarray(latents_ubyte.numpy())
class LatentPreviewer:
def decode_latent_to_preview(self, x0):
pass
def decode_latent_to_preview_image(self, preview_format, x0):
preview_image = self.decode_latent_to_preview(x0)
return ("JPEG", preview_image, MAX_PREVIEW_RESOLUTION)
class TAESDPreviewerImpl(LatentPreviewer):
def __init__(self, taesd):
self.taesd = taesd
def decode_latent_to_preview(self, x0):
x_sample = self.taesd.decode(x0[:1])[0].movedim(0, 2)
return preview_to_image(x_sample)
class TAEHVPreviewerImpl(TAESDPreviewerImpl):
def decode_latent_to_preview(self, x0):
x_sample = self.taesd.decode(x0[:1, :, :1])[0][0]
return preview_to_image(x_sample, do_scale=False)
class Latent2RGBPreviewer(LatentPreviewer):
def __init__(self, latent_rgb_factors, latent_rgb_factors_bias=None, latent_rgb_factors_reshape=None):
self.latent_rgb_factors = torch.tensor(latent_rgb_factors, device="cpu").transpose(0, 1)
self.latent_rgb_factors_bias = None
if latent_rgb_factors_bias is not None:
self.latent_rgb_factors_bias = torch.tensor(latent_rgb_factors_bias, device="cpu")
self.latent_rgb_factors_reshape = latent_rgb_factors_reshape
def decode_latent_to_preview(self, x0):
if self.latent_rgb_factors_reshape is not None:
x0 = self.latent_rgb_factors_reshape(x0)
self.latent_rgb_factors = self.latent_rgb_factors.to(dtype=x0.dtype, device=x0.device)
if self.latent_rgb_factors_bias is not None:
self.latent_rgb_factors_bias = self.latent_rgb_factors_bias.to(dtype=x0.dtype, device=x0.device)
if x0.ndim == 5:
x0 = x0[0, :, 0]
else:
x0 = x0[0]
latent_image = torch.nn.functional.linear(x0.movedim(0, -1), self.latent_rgb_factors, bias=self.latent_rgb_factors_bias)
# latent_image = x0[0].permute(1, 2, 0) @ self.latent_rgb_factors
return preview_to_image(latent_image)
def get_previewer(device, latent_format):
previewer = None
method = args.preview_method
if method != LatentPreviewMethod.NoPreviews:
# TODO previewer methods
taesd_decoder_path = None
if latent_format.taesd_decoder_name is not None:
taesd_decoder_path = next(
(fn for fn in folder_paths.get_filename_list("vae_approx")
if fn.startswith(latent_format.taesd_decoder_name)),
""
)
taesd_decoder_path = folder_paths.get_full_path("vae_approx", taesd_decoder_path)
if method == LatentPreviewMethod.Auto:
method = LatentPreviewMethod.Latent2RGB
if method == LatentPreviewMethod.TAESD:
if taesd_decoder_path:
if latent_format.taesd_decoder_name in VIDEO_TAES:
taesd = VAE(comfy.utils.load_torch_file(taesd_decoder_path))
taesd.first_stage_model.show_progress_bar = False
previewer = TAEHVPreviewerImpl(taesd)
else:
taesd = TAESD(None, taesd_decoder_path, latent_channels=latent_format.latent_channels).to(device)
previewer = TAESDPreviewerImpl(taesd)
else:
logging.warning("Warning: TAESD previews enabled, but could not find models/vae_approx/{}".format(latent_format.taesd_decoder_name))
if previewer is None:
if latent_format.latent_rgb_factors is not None:
previewer = Latent2RGBPreviewer(latent_format.latent_rgb_factors, latent_format.latent_rgb_factors_bias, latent_format.latent_rgb_factors_reshape)
return previewer
def prepare_callback(model, steps, x0_output_dict=None):
preview_format = "JPEG"
if preview_format not in ["JPEG", "PNG"]:
preview_format = "JPEG"
previewer = get_previewer(model.load_device, model.model.latent_format)
pbar = comfy.utils.ProgressBar(steps)
def callback(step, x0, x, total_steps):
if x0_output_dict is not None:
x0_output_dict["x0"] = x0
preview_bytes = None
if previewer:
if x0.is_nested:
x0 = x0.tensors[0]
preview_bytes = previewer.decode_latent_to_preview_image(preview_format, x0)
pbar.update_absolute(step + 1, total_steps, preview_bytes)
return callback
def set_preview_method(override: str = None):
if override and override != "default":
method = LatentPreviewMethod.from_string(override)
if method is not None:
args.preview_method = method
return
args.preview_method = default_preview_method
|