57 lines
1.9 KiB
GDScript3
57 lines
1.9 KiB
GDScript3
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extends Node
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var _client: BufferedHTTPClient
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enum ImgFmt { PNG, JPG, WEBP, BMP, GIF, UNKNOWN }
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func _identify_image(byte_array: PackedByteArray) -> ImgFmt:
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if byte_array.size() < 8:
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return ImgFmt.UNKNOWN
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# PNG magic bytes: 0x89, P, N, G, \r, \n, 0x1a, \n
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if byte_array[0] == 0x89 and byte_array[1] == 0x50 and byte_array[2] == 0x4E and byte_array[3] == 0x47:
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return ImgFmt.PNG
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# JPEG magic bytes (starts with 0xFF, 0xD8)
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if byte_array[0] == 0xFF and byte_array[1] == 0xD8:
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return ImgFmt.JPG
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# WebP magic bytes (RIFF header, "WEBP" at offset 8)
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if byte_array[0] == 0x52 and byte_array[1] == 0x49 and byte_array[2] == 0x46 and byte_array[3] == 0x46 and \
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byte_array[8] == 0x57 and byte_array[9] == 0x45 and byte_array[10] == 0x42 and byte_array[11] == 0x50:
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return ImgFmt.JPG
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# BMP Magic (Starts with 0x42, 0x4D
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if byte_array[0] == 0x42 and byte_array[1] == 0x4D:
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return ImgFmt.BMP
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if byte_array[0] == 0x47 and byte_array[1] == 0x49 and byte_array[2] == 0x46:
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return ImgFmt.GIF
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return ImgFmt.UNKNOWN
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func _ready() -> void:
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_client = BufferedHTTPClient.new()
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_client.name = "ImageLoaderHTTPClient"
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add_child(_client)
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func load_image(url: String) -> ImageTexture:
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var request : BufferedHTTPClient.RequestData = _client.request(url, HTTPClient.METHOD_GET, {}, "")
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var response : BufferedHTTPClient.ResponseData = await _client.wait_for_request(request)
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var img_buffer: PackedByteArray = response.response_data
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var img: Image = Image.new()
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match _identify_image(img_buffer):
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ImgFmt.PNG:
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img.load_png_from_buffer(img_buffer)
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ImgFmt.JPG:
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img.load_jpg_from_buffer(img_buffer)
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ImgFmt.WEBP:
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img.load_webp_from_buffer(img_buffer)
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ImgFmt.BMP:
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img.load_bmp_from_buffer(img_buffer)
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ImgFmt.GIF:
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push_error("Attempting to load a GIF image, use media loader to load.")
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ImgFmt.UNKNOWN:
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push_error("Failed to identify file!")
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return ImageTexture.create_from_image(img)
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