[DataProcessor] Refactor multimodal processor: extract encoding strategies and unify MM processing pipeline (#7298)

* merge mm processor

fastdeploy/input/utils/render_timestamp.py

@@ -0,0 +1,94 @@
+# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Render timestamps onto video frames."""
+
+import os
+from pathlib import Path
+
+from PIL import Image, ImageDraw, ImageFont
+
+FONT_PATH = os.path.join(Path(__file__).parent.absolute(), "Roboto-Regular.ttf")
+
+
+def render_single_image_with_timestamp(image: Image, number: str, rate: float, font_path: str = FONT_PATH):
+    """Render a timestamp string onto a PIL Image.
+
+    The font size is ``min(width, height) * rate``.
+    Text is drawn in black with a white outline (10% of font size).
+    """
+    draw = ImageDraw.Draw(image)
+    width, height = image.size
+    font_size = int(min(width, height) * rate)
+    outline_size = int(font_size * 0.1)
+    font = ImageFont.truetype(font_path, font_size)
+    x = 0
+    y = 0
+
+    draw.text(
+        (x, y),
+        number,
+        font=font,
+        fill=(0, 0, 0),
+        stroke_width=outline_size,
+        stroke_fill=(255, 255, 255),
+    )
+
+    return image
+
+
+def timestamp_converting(time_stamp_in_seconds):
+    """Convert timestamp from seconds to ``HH:MM:SS.ss`` format."""
+    hours = 0
+    while time_stamp_in_seconds >= 3600:
+        hours += 1
+        time_stamp_in_seconds -= 3600
+    mins = 0
+    while time_stamp_in_seconds >= 60:
+        mins += 1
+        time_stamp_in_seconds -= 60
+    time_hours = f"{int(hours):02d}"
+    time_mins = f"{int(mins):02d}"
+    time_secs = f"{time_stamp_in_seconds:05.02f}"
+    fi_time_stamp = time_hours + ":" + time_mins + ":" + time_secs
+
+    return fi_time_stamp
+
+
+def get_timestamp_for_uniform_frame_extraction(num_frames, frame_id, duration):
+    """Get the timestamp of a frame during uniform extraction.
+
+    Returns the timestamp in seconds.
+    """
+    time_stamp = duration * 1.0 * frame_id / num_frames
+
+    return time_stamp
+
+
+def render_frame_timestamp(frame, timestamp, font_rate=0.1):
+    """Render a timestamp onto a video frame.
+
+    Parameters
+    ----------
+    frame : PIL.Image
+        The video frame.
+    timestamp : float
+        Timestamp in seconds.
+    font_rate : float
+        Font size as a fraction of ``min(width, height)``.
+    """
+    time_stamp = "time: " + timestamp_converting(timestamp)
+    new_frame = render_single_image_with_timestamp(frame, time_stamp, font_rate)
+
+    return new_frame