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autogpt_platform/backend/backend/blocks/ai_music_generator.py
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import logging | ||
import time | ||
from enum import Enum | ||
from typing import Literal | ||
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import replicate | ||
from autogpt_libs.supabase_integration_credentials_store.types import APIKeyCredentials | ||
from pydantic import SecretStr | ||
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from backend.data.block import Block, BlockCategory, BlockOutput, BlockSchema | ||
from backend.data.model import CredentialsField, CredentialsMetaInput, SchemaField | ||
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logger = logging.getLogger(__name__) | ||
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TEST_CREDENTIALS = APIKeyCredentials( | ||
id="01234567-89ab-cdef-0123-456789abcdef", | ||
provider="replicate", | ||
api_key=SecretStr("mock-replicate-api-key"), | ||
title="Mock Replicate API key", | ||
expires_at=None, | ||
) | ||
TEST_CREDENTIALS_INPUT = { | ||
"provider": TEST_CREDENTIALS.provider, | ||
"id": TEST_CREDENTIALS.id, | ||
"type": TEST_CREDENTIALS.type, | ||
"title": TEST_CREDENTIALS.type, | ||
} | ||
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# Model version enum | ||
class MusicGenModelVersion(str, Enum): | ||
STEREO_LARGE = "stereo-large" | ||
MELODY_LARGE = "melody-large" | ||
LARGE = "large" | ||
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# Audio format enum | ||
class AudioFormat(str, Enum): | ||
WAV = "wav" | ||
MP3 = "mp3" | ||
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# Normalization strategy enum | ||
class NormalizationStrategy(str, Enum): | ||
LOUDNESS = "loudness" | ||
CLIP = "clip" | ||
PEAK = "peak" | ||
RMS = "rms" | ||
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class AIMusicGeneratorBlock(Block): | ||
class Input(BlockSchema): | ||
credentials: CredentialsMetaInput[Literal["replicate"], Literal["api_key"]] = ( | ||
CredentialsField( | ||
provider="replicate", | ||
supported_credential_types={"api_key"}, | ||
description="The Replicate integration can be used with " | ||
"any API key with sufficient permissions for the blocks it is used on.", | ||
) | ||
) | ||
prompt: str = SchemaField( | ||
description="A description of the music you want to generate", | ||
placeholder="e.g., 'An upbeat electronic dance track with heavy bass'", | ||
title="Prompt", | ||
) | ||
model_version: MusicGenModelVersion = SchemaField( | ||
description="Model to use for generation", | ||
default=MusicGenModelVersion.STEREO_LARGE, | ||
title="Model Version", | ||
) | ||
duration: int = SchemaField( | ||
description="Duration of the generated audio in seconds", | ||
default=8, | ||
title="Duration", | ||
) | ||
temperature: float = SchemaField( | ||
description="Controls the 'conservativeness' of the sampling process. Higher temperature means more diversity", | ||
default=1.0, | ||
title="Temperature", | ||
) | ||
top_k: int = SchemaField( | ||
description="Reduces sampling to the k most likely tokens", | ||
default=250, | ||
title="Top K", | ||
) | ||
top_p: float = SchemaField( | ||
description="Reduces sampling to tokens with cumulative probability of p. When set to 0 (default), top_k sampling is used", | ||
default=0.0, | ||
title="Top P", | ||
) | ||
classifier_free_guidance: int = SchemaField( | ||
description="Increases the influence of inputs on the output. Higher values produce lower-variance outputs that adhere more closely to inputs", | ||
default=3, | ||
title="Classifier Free Guidance", | ||
) | ||
output_format: AudioFormat = SchemaField( | ||
description="Output format for generated audio", | ||
default=AudioFormat.WAV, | ||
title="Output Format", | ||
) | ||
normalization_strategy: NormalizationStrategy = SchemaField( | ||
description="Strategy for normalizing audio", | ||
default=NormalizationStrategy.LOUDNESS, | ||
title="Normalization Strategy", | ||
) | ||
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class Output(BlockSchema): | ||
result: str = SchemaField(description="URL of the generated audio file") | ||
error: str = SchemaField(description="Error message if the model run failed") | ||
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def __init__(self): | ||
super().__init__( | ||
id="44f6c8ad-d75c-4ae1-8209-aad1c0326928", | ||
description="This block generates music using Meta's MusicGen model on Replicate.", | ||
categories={BlockCategory.AI}, | ||
input_schema=AIMusicGeneratorBlock.Input, | ||
output_schema=AIMusicGeneratorBlock.Output, | ||
test_input={ | ||
"credentials": TEST_CREDENTIALS_INPUT, | ||
"prompt": "An upbeat electronic dance track with heavy bass", | ||
"model_version": MusicGenModelVersion.STEREO_LARGE, | ||
"duration": 8, | ||
"temperature": 1.0, | ||
"top_k": 250, | ||
"top_p": 0.0, | ||
"classifier_free_guidance": 3, | ||
"output_format": AudioFormat.WAV, | ||
"normalization_strategy": NormalizationStrategy.LOUDNESS, | ||
}, | ||
test_output=[ | ||
( | ||
"result", | ||
"https://replicate.com/output/generated-audio-url.wav", | ||
), | ||
], | ||
test_mock={ | ||
"run_model": lambda api_key, model_version, prompt, duration, temperature, top_k, top_p, classifier_free_guidance, output_format, normalization_strategy: "https://replicate.com/output/generated-audio-url.wav", | ||
}, | ||
test_credentials=TEST_CREDENTIALS, | ||
) | ||
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def run( | ||
self, input_data: Input, *, credentials: APIKeyCredentials, **kwargs | ||
) -> BlockOutput: | ||
max_retries = 3 | ||
retry_delay = 5 # seconds | ||
last_error = None | ||
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for attempt in range(max_retries): | ||
try: | ||
logger.debug( | ||
f"[AIMusicGeneratorBlock] - Running model (attempt {attempt + 1})" | ||
) | ||
result = self.run_model( | ||
api_key=credentials.api_key, | ||
model_version=input_data.model_version, | ||
prompt=input_data.prompt, | ||
duration=input_data.duration, | ||
temperature=input_data.temperature, | ||
top_k=input_data.top_k, | ||
top_p=input_data.top_p, | ||
classifier_free_guidance=input_data.classifier_free_guidance, | ||
output_format=input_data.output_format, | ||
normalization_strategy=input_data.normalization_strategy, | ||
) | ||
if result and result != "No output received": | ||
yield "result", result | ||
return | ||
else: | ||
last_error = "Model returned empty or invalid response" | ||
raise ValueError(last_error) | ||
except Exception as e: | ||
last_error = f"Unexpected error: {str(e)}" | ||
logger.error(f"[AIMusicGeneratorBlock] - Error: {last_error}") | ||
if attempt < max_retries - 1: | ||
time.sleep(retry_delay) | ||
continue | ||
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# If we've exhausted all retries, yield the error | ||
yield "error", f"Failed after {max_retries} attempts. Last error: {last_error}" | ||
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def run_model( | ||
self, | ||
api_key: SecretStr, | ||
model_version: MusicGenModelVersion, | ||
prompt: str, | ||
duration: int, | ||
temperature: float, | ||
top_k: int, | ||
top_p: float, | ||
classifier_free_guidance: int, | ||
output_format: AudioFormat, | ||
normalization_strategy: NormalizationStrategy, | ||
): | ||
# Initialize Replicate client with the API key | ||
client = replicate.Client(api_token=api_key.get_secret_value()) | ||
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# Run the model with parameters | ||
output = client.run( | ||
"meta/musicgen:671ac645ce5e552cc63a54a2bbff63fcf798043055d2dac5fc9e36a837eedcfb", | ||
input={ | ||
"prompt": prompt, | ||
"model_version": model_version, | ||
"duration": duration, | ||
"temperature": temperature, | ||
"top_k": top_k, | ||
"top_p": top_p, | ||
"classifier_free_guidance": classifier_free_guidance, | ||
"output_format": output_format, | ||
"normalization_strategy": normalization_strategy, | ||
}, | ||
) | ||
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# Handle the output | ||
if isinstance(output, list) and len(output) > 0: | ||
result_url = output[0] # If output is a list, get the first element | ||
elif isinstance(output, str): | ||
result_url = output # If output is a string, use it directly | ||
else: | ||
result_url = ( | ||
"No output received" # Fallback message if output is not as expected | ||
) | ||
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return result_url |
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