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"""Example of DashScope model multimodal (vision) calls using DataBlock."""
import asyncio
import base64
import os
from pathlib import Path
from _utils import stream_and_collect
from agentscope.message import (
Msg,
TextBlock,
DataBlock,
URLSource,
Base64Source,
)
from agentscope.model import DashScopeChatModel
from agentscope.credential import DashScopeCredential
# A publicly accessible test image
TEST_IMAGE_URL = (
"https://help-static-aliyun-doc.aliyuncs.com/file-manage"
"-files/zh-CN/20241022/emyrja/dog_and_girl.jpeg"
)
# A publicly accessible test video
TEST_VIDEO_URL = (
"https://help-static-aliyun-doc.aliyuncs.com/file-manage"
"-files/zh-CN/20241115/cqqkru/1.mp4"
)
# A publicly accessible test audio
TEST_AUDIO_URL = (
"https://help-static-aliyun-doc.aliyuncs.com/file-manage"
"-files/zh-CN/20250211/tixcef/cherry.wav"
)
async def example_image_url() -> None:
"""Call qwen3.5-plus with an image URL and ask what is in the image."""
model = DashScopeChatModel(
credential=DashScopeCredential(
api_key=os.environ["DASHSCOPE_API_KEY"],
),
model="qwen3.5-plus",
stream=True,
context_size=1_000_000,
parameters=DashScopeChatModel.Parameters(thinking_enable=True),
)
image_block = DataBlock(
source=URLSource(
url=TEST_IMAGE_URL,
media_type="image/jpeg",
),
)
msgs = [
Msg(
name="user",
content=[
TextBlock(
text="What animal is in this image? Describe it briefly.",
),
image_block,
],
role="user",
),
]
print("=== Multimodal Call (Image URL) ===")
await stream_and_collect(await model(msgs))
def _build_model() -> DashScopeChatModel:
"""Build and return a DashScopeChatModel instance."""
return DashScopeChatModel(
credential=DashScopeCredential(
api_key=os.environ["DASHSCOPE_API_KEY"],
),
model="qwen3.5-plus",
stream=True,
context_size=1_000_000,
parameters=DashScopeChatModel.Parameters(thinking_enable=True),
)
async def example_image_local_path() -> None:
"""Call qwen3.5-plus with a local image using a ``file://`` URL.
The formatter reads the file from disk and converts it to a base64 data
URI.
"""
model = _build_model()
abs_path = str(Path(__file__).parent / "test.jpeg")
image_block = DataBlock(
source=URLSource(
url=f"file://{abs_path}",
media_type="image/jpeg",
),
)
msgs = [
Msg(
name="user",
content=[
TextBlock(
text="What is happening in this image? Describe it "
"briefly.",
),
image_block,
],
role="user",
),
]
print("=== Local Path Call (file://) ===")
await stream_and_collect(await model(msgs))
async def example_image_base64() -> None:
"""Call qwen3.5-plus with a local image using explicit base64 encoding.
Use ``Base64Source`` when you already have the binary data in memory or
want full control over the encoding step.
"""
model = _build_model()
with open(Path(__file__).parent / "test.jpeg", "rb") as f:
data = base64.b64encode(f.read()).decode("utf-8")
image_block = DataBlock(
source=Base64Source(
data=data,
media_type="image/jpeg",
),
)
msgs = [
Msg(
name="user",
content=[
TextBlock(
text="What is happening in this image? Describe it "
"briefly.",
),
image_block,
],
role="user",
),
]
print("=== Explicit Base64 Call ===")
await stream_and_collect(await model(msgs))
async def example_video() -> None:
"""Call qwen3.5-plus with a video URL and ask what is in the video."""
model = _build_model()
video_block = DataBlock(
source=URLSource(
url=TEST_VIDEO_URL,
media_type="video/mp4",
),
)
msgs = [
Msg(
name="user",
content=[
TextBlock(
text="What is happening in this video? "
"Describe it briefly.",
),
video_block,
],
role="user",
),
]
print("=== Multimodal Call (Video URL) ===")
await stream_and_collect(await model(msgs))
async def example_audio() -> None:
"""Call qwen3.5-omni-plus with an audio URL.
Audio understanding requires an Omni model (qwen3.5-omni-plus or
Qwen3-Omni-Flash). Omni models also require stream=True and the
``modalities`` parameter.
"""
model = DashScopeChatModel(
credential=DashScopeCredential(
api_key=os.environ["DASHSCOPE_API_KEY"],
),
model="qwen3.5-omni-plus",
stream=True,
context_size=1_000_000,
)
audio_block = DataBlock(
source=URLSource(
url=TEST_AUDIO_URL,
media_type="audio/wav",
),
)
msgs = [
Msg(
name="user",
content=[
TextBlock(text="What is being said in this audio clip?"),
audio_block,
],
role="user",
),
]
print("=== Multimodal Call (Audio URL - Omni) ===")
await stream_and_collect(
await model(msgs, modalities=["text", "audio"]),
)
if __name__ == "__main__":
asyncio.run(example_image_url())
asyncio.run(example_image_local_path())
asyncio.run(example_image_base64())
asyncio.run(example_video())
asyncio.run(example_audio())
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