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Enable using Stable Diffusion 3 for Image Generation via API

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This commit is contained in:
Debanjum Singh Solanky 2024-04-25 19:12:27 +05:30
parent d6fe5d9a63
commit eda33e092f
3 changed files with 54 additions and 9 deletions
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24
src/khoj/database/migrations/0048_texttoimagemodelconfig_api_key_and_more.py Normal file
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@ -0,0 +1,24 @@
# Generated by Django 4.2.11 on 2024-06-20 19:02
from django.db import migrations, models
class Migration(migrations.Migration):
dependencies = [
("database", "0047_alter_entry_file_type"),
]
operations = [
migrations.AddField(
model_name="texttoimagemodelconfig",
name="api_key",
field=models.CharField(blank=True, default=None, max_length=200, null=True),
),
migrations.AlterField(
model_name="texttoimagemodelconfig",
name="model_type",
field=models.CharField(
choices=[("openai", "Openai"), ("stability-ai", "Stabilityai")], default="openai", max_length=200
),
),
]

2
src/khoj/database/models/__init__.py
View file

@ -234,9 +234,11 @@ class SearchModelConfig(BaseModel):
class TextToImageModelConfig(BaseModel):
class ModelType(models.TextChoices):
OPENAI = "openai"
STABILITYAI = "stability-ai"
model_name = models.CharField(max_length=200, default="dall-e-3")
model_type = models.CharField(max_length=200, choices=ModelType.choices, default=ModelType.OPENAI)
api_key = models.CharField(max_length=200, default=None, null=True, blank=True)
class SpeechToTextModelOptions(BaseModel):

25
src/khoj/routers/helpers.py
View file

@ -753,7 +753,7 @@ async def text_to_image(
status_code = 501
message = "Failed to generate image. Setup image generation on the server."
return image_url or image, status_code, message, intent_type.value
elif state.openai_client and text_to_image_config.model_type == TextToImageModelConfig.ModelType.OPENAI:
elif state.openai_client:
logger.info("Generating image with OpenAI")
text2image_model = text_to_image_config.model_name
chat_history = ""
@ -775,17 +775,36 @@ async def text_to_image(
note_references=references,
online_results=online_results,
)
with timer("Generate image with OpenAI", logger):
if send_status_func:
await send_status_func(f"**🖼️ Painting using Enhanced Prompt**:\n{improved_image_prompt}")
if text_to_image_config.model_type == TextToImageModelConfig.ModelType.OPENAI:
with timer("Generate image with OpenAI", logger):
response = state.openai_client.images.generate(
prompt=improved_image_prompt, model=text2image_model, response_format="b64_json"
)
image = response.data[0].b64_json
decoded_image = base64.b64decode(image)
elif text_to_image_config.model_type == TextToImageModelConfig.ModelType.STABILITYAI:
with timer("Generate image with Stability AI", logger):
response = requests.post(
f"https://api.stability.ai/v2beta/stable-image/generate/sd3",
headers={"authorization": f"Bearer {text_to_image_config.api_key}", "accept": "image/*"},
files={"none": ""},
data={
"prompt": improved_image_prompt,
"model": text2image_model,
"mode": "text-to-image",
"output_format": "png",
"seed": 1032622926,
"aspect_ratio": "1:1",
},
)
decoded_image = response.content
with timer("Convert image to webp", logger):
# Convert png to webp for faster loading
decoded_image = base64.b64decode(image)
image_io = io.BytesIO(decoded_image)
png_image = Image.open(image_io)
webp_image_io = io.BytesIO()