SlowMovie/helloworld.py at master · missionfloyd/SlowMovie · GitHub

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#!/usr/bin/python3
# -*- coding:utf-8 -*-

# *************************
# ** Before running this **
# ** code ensure you've  **
# ** turned on SPI on    **
# ** your Raspberry Pi   **
# ** & installed the     **
# ** Waveshare library   **
# *************************

import os, time, sys, random, signal
from PIL import Image, ImageEnhance
import ffmpeg
from fractions import Fraction

# Ensure this is the correct import for your particular screen
from waveshare_epd import epd7in5_V2 as epd_driver

fileTypes = [".mp4", ".mkv"]

def exithandler(signum, frame):
    try:
        epd_driver.epdconfig.module_exit()
    finally:
        sys.exit()

signal.signal(signal.SIGTERM, exithandler)
signal.signal(signal.SIGINT, exithandler)

def generate_frame(in_filename, out_filename, time):
    (
        ffmpeg
        .input(in_filename, ss=time)
        .filter("scale", "iw*sar", "ih")
        .filter("scale", width, height, force_original_aspect_ratio=1)
        .filter("pad", width, height, -1, -1)
        .output(out_filename, vframes=1)
        .overwrite_output()
        .run(capture_stdout=True, capture_stderr=True)
    )

def supported_filetype(file):
    _, ext = os.path.splitext(file)
    return ext.lower() in fileTypes

# Ensure this is the correct path to your video folder
viddir = os.path.join(os.path.dirname(os.path.realpath(__file__)), "Videos")
if not os.path.isdir(viddir):
    os.mkdir(viddir)

# Pick a random .mp4 video in your video directory
videos = list(filter(supported_filetype, os.listdir(viddir)))

if not videos:
    print("No videos found")
    sys.exit()

epd = epd_driver.EPD()
width = epd.width
height = epd.height

currentVideo = None
videoInfos = {}

while 1:
    epd.init()
    lastVideo = currentVideo
    currentVideo = os.path.join(viddir, random.choice(videos))

    if lastVideo != currentVideo:
        # Check how many frames are in the movie
        if currentVideo in videoInfos:
            videoInfo = videoInfos[currentVideo]
        else:
            videoInfo = ffmpeg.probe(currentVideo)
            videoInfos[currentVideo] = videoInfo

        frameCount = int(videoInfo["streams"][0]["nb_frames"])
        framerate = videoInfo["streams"][0]["avg_frame_rate"]
        framerate = float(Fraction(framerate))
        frametime = 1000 / framerate

    # Pick a random frame
    frame = random.randint(0, frameCount)

    # Convert that frame to Timecode
    msTimecode = "%dms" % (frame * frametime)

    # Use ffmpeg to extract a frame from the movie, letterbox/pillarbox, and save it
    generate_frame(currentVideo, "/dev/shm/frame.bmp", msTimecode)

    # Open image in PIL
    pil_im = Image.open("/dev/shm/frame.bmp")

    enhancer = ImageEnhance.Contrast(pil_im)
    pil_im = enhancer.enhance(2)

    # Dither the image into a 1 bit bitmap
    #pil_im = pil_im.convert(mode = "1", dither = Image.FLOYDSTEINBERG)

    # display the image
    print("Displaying frame %d of %s" % (frame, os.path.basename(currentVideo)))
    epd.display(epd.getbuffer(pil_im))

    # Wait for 10 seconds
    epd.sleep()
    time.sleep(10)