diff --git a/client/ayon_core/lib/__init__.py b/client/ayon_core/lib/__init__.py index 1f864284cd..12c391d867 100644 --- a/client/ayon_core/lib/__init__.py +++ b/client/ayon_core/lib/__init__.py @@ -109,6 +109,7 @@ from .transcoding import ( convert_ffprobe_fps_value, convert_ffprobe_fps_to_float, get_rescaled_command_arguments, + get_media_mime_type, ) from .plugin_tools import ( @@ -209,6 +210,7 @@ __all__ = [ "convert_ffprobe_fps_value", "convert_ffprobe_fps_to_float", "get_rescaled_command_arguments", + "get_media_mime_type", "compile_list_of_regexes", diff --git a/client/ayon_core/lib/transcoding.py b/client/ayon_core/lib/transcoding.py index bff28614ea..7ccd2ce819 100644 --- a/client/ayon_core/lib/transcoding.py +++ b/client/ayon_core/lib/transcoding.py @@ -6,6 +6,7 @@ import collections import tempfile import subprocess import platform +from typing import Optional import xml.etree.ElementTree @@ -1455,3 +1456,89 @@ def get_oiio_input_and_channel_args(oiio_input_info, alpha_default=None): input_arg += ":ch={}".format(input_channels_str) return input_arg, channels_arg + + +def _get_media_mime_type_from_ftyp(content): + if content[8:10] == b"qt": + return "video/quicktime" + + if content[8:12] == b"isom": + return "video/mp4" + if content[8:12] in (b"M4V\x20", b"mp42"): + return "video/mp4v" + if content[8:13] in (b"3gpis"): + return "video/3gpp" + # ( + # b"avc1", b"iso2", b"isom", b"mmp4", b"mp41", b"mp71", + # b"msnv", b"ndas", b"ndsc", b"ndsh", b"ndsm", b"ndsp", b"ndss", + # b"ndxc", b"ndxh", b"ndxm", b"ndxp", b"ndxs" + # ) + return None + + +def get_media_mime_type(filepath: str) -> Optional[str]: + """Determine Mime-Type of a file. + + Args: + filepath (str): Path to file. + + Returns: + Optional[str]: Mime type or None if is unknown mime type. + + """ + if not filepath or not os.path.exists(filepath): + return None + + with open(filepath, "rb") as stream: + content = stream.read() + + content_len = len(content) + # Pre-validation (largest definition check) + # - hopefully there cannot be media defined in less than 12 bytes + if content_len < 12: + return None + + # FTYP + if content[4:8] == b"ftyp": + return _get_media_mime_type_from_ftyp(content) + + # BMP + if content[0:2] == b"BM": + return "image/bmp" + + # Tiff + if content[0:2] in (b"MM", b"II"): + return "tiff" + + # PNG + if content[0:4] == b"\211PNG": + return "image/png" + + # SVG + if b'xmlns="http://www.w3.org/2000/svg"' in content: + return "image/svg+xml" + + # JPEG, JFIF or Exif + if ( + content[0:4] == b"\xff\xd8\xff\xdb" + or content[6:10] in (b"JFIF", b"Exif") + ): + return "image/jpeg" + + # Webp + if content[0:4] == b"RIFF" and content[8:12] == b"WEBP": + return "image/webp" + + # Gif + if content[0:6] in (b"GIF87a", b"GIF89a"): + return "gif" + + # Adobe PhotoShop file (8B > Adobe, PS > PhotoShop) + if content[0:4] == b"8BPS": + return "image/vnd.adobe.photoshop" + + # Windows ICO > this might be wild guess as multiple files can start + # with this header + if content[0:4] == b"\x00\x00\x01\x00": + return "image/x-icon" + return None