用 CircuitPython 在 LED 矩阵屏上显示 gif 动画

#1

https://adafruit-playground.com/u/Gambl ... rix-portal

代码：全选

import displayio
import board
import rgbmatrix
import framebufferio
import time
import gifio
import os

# Get a dictionary of GIF filenames at the passed base directory
def get_files(base):
    allfiles = os.listdir(base)
    file_names = []
    for _, filetext in enumerate(allfiles):
        if not filetext.startswith("."):
            if filetext not in ('boot_out.txt', 'System Volume Information'):
                if filetext.endswith(".gif"):
                    file_names.append(filetext)
    return file_names

# Set for 2 matrix
bit_depth = 6
base_width = 64
base_height = 32
chain_across = 1
tile_down = 2
serpentine = True

width = base_width * chain_across
height = base_height * tile_down

addr_pins = [board.MTX_ADDRA, board.MTX_ADDRB, board.MTX_ADDRC, board.MTX_ADDRD]
rgb_pins = [
    board.MTX_R1,
    board.MTX_G1,
    board.MTX_B1,
    board.MTX_R2,
    board.MTX_G2,
    board.MTX_B2,
]
clock_pin = board.MTX_CLK
latch_pin = board.MTX_LAT
oe_pin = board.MTX_OE

displayio.release_displays()
matrix = rgbmatrix.RGBMatrix(
                width=width,
                height=height,
                bit_depth=bit_depth,
                rgb_pins=rgb_pins,
                addr_pins=addr_pins,
                clock_pin=clock_pin,
                latch_pin=latch_pin,
                output_enable_pin=oe_pin,
                tile=tile_down,
                serpentine=serpentine,
            )
display = framebufferio.FramebufferDisplay(matrix)
splash = displayio.Group()
display.root_group = splash

DIRECTORY = "/gifs/"

files = get_files(DIRECTORY)
while True:
    for i in range(len(files)):
        odg = gifio.OnDiskGif(DIRECTORY+files[i])
        # Load the first frame
        start = time.monotonic()
        next_delay = odg.next_frame()
        end = time.monotonic()
        overhead = end - start # how long did loading a frame take

        gif_tile = displayio.TileGrid(
            odg.bitmap,
            pixel_shader=displayio.ColorConverter(
                input_colorspace=displayio.Colorspace.RGB565_SWAPPED
            ),
        )
        splash.append(gif_tile)
        
        start = time.monotonic()
        # Display the GIF for 30 seconds
        while time.monotonic() &lt; start + 30:
            frame_shown = time.monotonic()
            display.refresh()
            next_delay = odg.next_frame()
            time.sleep(max(0, next_delay - overhead))

        splash.remove(gif_tile)