Add MiniMax Music 3 (#14456)
* Add MiniMax Music 3 transformer, pipeline sub-models, and conversion script
* Add MiniMax Music 3 pipeline, tests, and docs
* Wire example docstring, point diffusers-format references at MiniMaxAI/MiniMax-Music-3
* Use MiniMaxAI/MiniMax-Music3 as the official diffusers weights repo id
* Apply doc-builder style
* Use dtype in examples, demonstrate the structured prompt format
* Use soundfile in examples like the other audio pipelines
* Convert to a modular pipeline and move models under src/diffusers/models
Per review: the conditioner moves to models/condition_embedders, the RVQ depth
decoder and vocoder to models/transformers and models/autoencoders, and the
standard pipeline is replaced by MiniMaxMusic3ModularPipeline (anima-style
blocks, helios-style chunk loop, guider-abstracted CFG with a zeros
unconditional branch). Index configs now reference all components under the
diffusers library. Also applies the transformer review suggestions
(Transformer2DModelOutput, inlined rotary forward, explicit processor default).
* Point modular index loading specs at the Hub repo in the converter
* Apply doc-builder style to the modular blocks docstrings
* Address review-bot comments: overlap comment accuracy, single pipeline-level progress bar, zero-frame duration guard, import ordering, docstring cross-reference
* Support CPU offloading in the AR step: trigger offload hooks before submodule calls (minimax_h3 workaround), clear error when the AR models cannot co-reside
* Docs: PR-install tip and memory-usage section with measured offloading numbers
* Address review comments on the block assembly
Take the individual models rather than `components` in `_generate_depth_codes` and
`_embed_audio_frame`; `num_codebooks` / `audio_vocab_size` come off the depth decoder's
config, so the two pipeline properties that existed only for them are gone.
Assemble the blockset as three top-level children, each owning models and runnable on its
own — generate the semantics once and denoise it with different settings:
semantic_generator MiniMaxMusic3SemanticGenerationStep [tokenize, generate]
denoise MiniMaxMusic3CoreDenoiseStep [prepare_chunks, denoise]
decode MiniMaxMusic3VocoderDecodeStep
`MiniMaxMusic3TextEncoderStep` is renamed `MiniMaxMusic3TokenizeStep` (it only tokenizes)
and the autoregressive leaf `MiniMaxMusic3AutoregressiveStep`, freeing its old name for
the sequential.
Point the tests at `hf-internal-testing/tiny-minimax-music3-modular-pipe`; the previous
fixture repo's component specs pointed at a local path, so nothing loaded off that machine.
Drop the PR-branch install tip from the docs.
20s and 60s generations are bit-identical to before these changes.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---------
Co-authored-by: yiyixuxu <yixu310@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
