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| # Copyright (c) Meta Platforms, Inc. and affiliates. | |
| # All rights reserved. | |
| # | |
| # This source code is licensed under the license found in the | |
| # LICENSE file in the root directory of this source tree. | |
| """ | |
| Legacy functions used at the time of the first release, kept for referencd. | |
| """ | |
| from pathlib import Path | |
| import typing as tp | |
| from omegaconf import OmegaConf, DictConfig | |
| import torch | |
| from audiocraft import __version__ | |
| def _clean_lm_cfg(cfg: DictConfig): | |
| OmegaConf.set_struct(cfg, False) | |
| # This used to be set automatically in the LM solver, need a more robust solution | |
| # for the future. | |
| cfg['transformer_lm']['card'] = 2048 | |
| n_q = 4 | |
| stereo_cfg = getattr(cfg, 'interleave_stereo_codebooks', None) | |
| if stereo_cfg is not None and stereo_cfg.use: | |
| if 'downsample' in stereo_cfg: | |
| del stereo_cfg['downsample'] | |
| n_q = 8 | |
| cfg['transformer_lm']['n_q'] = n_q | |
| # Experimental params no longer supported. | |
| bad_params = ['spectral_norm_attn_iters', 'spectral_norm_ff_iters', | |
| 'residual_balancer_attn', 'residual_balancer_ff', 'layer_drop'] | |
| for name in bad_params: | |
| del cfg['transformer_lm'][name] | |
| OmegaConf.set_struct(cfg, True) | |
| return cfg | |
| def export_encodec(checkpoint_path: tp.Union[Path, str], out_file: tp.Union[Path, str]): | |
| pkg = torch.load(checkpoint_path, 'cpu') | |
| new_pkg = { | |
| 'best_state': pkg['ema']['state']['model'], | |
| 'xp.cfg': OmegaConf.to_yaml(pkg['xp.cfg']), | |
| # The following params were NOT exported for the first release of MusicGen. | |
| 'version': __version__, | |
| 'exported': True, | |
| } | |
| Path(out_file).parent.mkdir(exist_ok=True, parents=True) | |
| torch.save(new_pkg, out_file) | |
| return out_file | |
| def export_lm(checkpoint_path: tp.Union[Path, str], out_file: tp.Union[Path, str]): | |
| pkg = torch.load(checkpoint_path, 'cpu') | |
| if pkg['fsdp_best_state']: | |
| best_state = pkg['fsdp_best_state']['model'] | |
| else: | |
| best_state = pkg['best_state']['model'] | |
| new_pkg = { | |
| 'best_state': best_state, | |
| 'xp.cfg': OmegaConf.to_yaml(_clean_lm_cfg(pkg['xp.cfg'])), | |
| # The following params were NOT exported for the first release of MusicGen. | |
| 'version': __version__, | |
| 'exported': True, | |
| } | |
| Path(out_file).parent.mkdir(exist_ok=True, parents=True) | |
| torch.save(new_pkg, out_file) | |
| return out_file | |