mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-16 09:55:05 +00:00
466 lines
17 KiB
Python
466 lines
17 KiB
Python
"""
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RIFF parser, able to parse:
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* AVI video container
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* WAV audio container
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* CDA file
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Documents:
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- libavformat source code from ffmpeg library
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http://ffmpeg.mplayerhq.hu/
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- Video for Windows Programmer's Guide
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http://www.opennet.ru/docs/formats/avi.txt
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- What is an animated cursor?
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http://www.gdgsoft.com/anituner/help/aniformat.htm
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Authors:
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* Aurélien Jacobs
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* Mickaël KENIKSSI
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* Victor Stinner
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Changelog:
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* 2007-03-30: support ACON (animated icons)
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* 2006-08-08: merge AVI, WAV and CDA parsers into RIFF parser
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* 2006-08-03: creation of CDA parser by Mickaël KENIKSSI
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* 2005-06-21: creation of WAV parser by Victor Stinner
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* 2005-06-08: creation of AVI parser by Victor Stinner and Aurélien Jacobs
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Thanks to:
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* Wojtek Kaniewski (wojtekka AT logonet.com.pl) for its CDA file
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format information
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"""
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from hachoir.parser import Parser
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from hachoir.field import (FieldSet, ParserError,
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UInt8, UInt16, UInt32, Enum,
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Bit, NullBits, NullBytes,
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RawBytes, String, PaddingBytes,
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SubFile)
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from hachoir.core.tools import alignValue, humanDuration
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from hachoir.core.endian import LITTLE_ENDIAN
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from hachoir.core.text_handler import filesizeHandler, textHandler
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from hachoir.parser.video.fourcc import audio_codec_name, video_fourcc_name
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from hachoir.parser.image.ico import IcoFile
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from datetime import timedelta
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def parseText(self):
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yield String(self, "text", self["size"].value,
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strip=" \0", truncate="\0",
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charset="ISO-8859-1")
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def parseRawFormat(self, size):
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yield RawBytes(self, "raw_format", size)
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def parseVideoFormat(self, size):
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yield UInt32(self, "video_size", "Video format: Size")
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yield UInt32(self, "width", "Video format: Width")
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yield UInt32(self, "height", "Video format: Height")
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yield UInt16(self, "panes", "Video format: Panes")
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yield UInt16(self, "depth", "Video format: Depth")
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yield UInt32(self, "tag1", "Video format: Tag1")
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yield UInt32(self, "img_size", "Video format: Image size")
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yield UInt32(self, "xpels_meter", "Video format: XPelsPerMeter")
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yield UInt32(self, "ypels_meter", "Video format: YPelsPerMeter")
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yield UInt32(self, "clr_used", "Video format: ClrUsed")
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yield UInt32(self, "clr_important", "Video format: ClrImportant")
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def parseAudioFormat(self, size):
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yield Enum(UInt16(self, "codec", "Audio format: Codec id"), audio_codec_name)
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yield UInt16(self, "channel", "Audio format: Channels")
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yield UInt32(self, "sample_rate", "Audio format: Sample rate")
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yield UInt32(self, "bit_rate", "Audio format: Bit rate")
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yield UInt16(self, "block_align", "Audio format: Block align")
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if size >= 16:
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yield UInt16(self, "bits_per_sample", "Audio format: Bits per sample")
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if size >= 18:
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yield UInt16(self, "ext_size", "Audio format: Size of extra information")
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if size >= 28: # and self["a_channel"].value > 2
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yield UInt16(self, "reserved", "Audio format: ")
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yield UInt32(self, "channel_mask", "Audio format: channels placement bitmask")
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yield UInt32(self, "subformat", "Audio format: Subformat id")
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def parseAVIStreamFormat(self):
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size = self["size"].value
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strtype = self["../stream_hdr/stream_type"].value
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TYPE_HANDLER = {
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"vids": (parseVideoFormat, 40),
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"auds": (parseAudioFormat, 16)
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}
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handler = parseRawFormat
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if strtype in TYPE_HANDLER:
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info = TYPE_HANDLER[strtype]
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if info[1] <= size:
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handler = info[0]
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yield from handler(self, size)
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def parseAVIStreamHeader(self):
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if self["size"].value != 56:
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raise ParserError("Invalid stream header size")
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yield String(self, "stream_type", 4, "Stream type four character code", charset="ASCII")
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field = String(self, "fourcc", 4, "Stream four character code",
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strip=" \0", charset="ASCII")
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if self["stream_type"].value == "vids":
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yield Enum(field, video_fourcc_name, lambda text: text.upper())
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else:
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yield field
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yield UInt32(self, "flags", "Stream flags")
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yield UInt16(self, "priority", "Stream priority")
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yield String(self, "language", 2, "Stream language", charset="ASCII", strip="\0")
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yield UInt32(self, "init_frames", "InitialFrames")
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yield UInt32(self, "scale", "Time scale")
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yield UInt32(self, "rate", "Divide by scale to give frame rate")
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yield UInt32(self, "start", "Stream start time (unit: rate/scale)")
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yield UInt32(self, "length", "Stream length (unit: rate/scale)")
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yield UInt32(self, "buf_size", "Suggested buffer size")
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yield UInt32(self, "quality", "Stream quality")
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yield UInt32(self, "sample_size", "Size of samples")
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yield UInt16(self, "left", "Destination rectangle (left)")
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yield UInt16(self, "top", "Destination rectangle (top)")
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yield UInt16(self, "right", "Destination rectangle (right)")
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yield UInt16(self, "bottom", "Destination rectangle (bottom)")
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class RedBook(FieldSet):
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"""
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RedBook offset parser, used in CD audio (.cda) file
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"""
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def createFields(self):
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yield UInt8(self, "frame")
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yield UInt8(self, "second")
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yield UInt8(self, "minute")
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yield PaddingBytes(self, "notused", 1)
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def formatSerialNumber(field):
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"""
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Format an disc serial number.
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Eg. 0x00085C48 => "0008-5C48"
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"""
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sn = field.value
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return "%04X-%04X" % (sn >> 16, sn & 0xFFFF)
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def parseCDDA(self):
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"""
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HSG address format: number of 1/75 second
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HSG offset = (minute*60 + second)*75 + frame + 150 (from RB offset)
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HSG length = (minute*60 + second)*75 + frame (from RB length)
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"""
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yield UInt16(self, "cda_version", "CD file version (currently 1)")
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yield UInt16(self, "track_no", "Number of track")
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yield textHandler(UInt32(self, "disc_serial", "Disc serial number"),
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formatSerialNumber)
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yield UInt32(self, "hsg_offset", "Track offset (HSG format)")
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yield UInt32(self, "hsg_length", "Track length (HSG format)")
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yield RedBook(self, "rb_offset", "Track offset (Red-book format)")
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yield RedBook(self, "rb_length", "Track length (Red-book format)")
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def parseWAVFormat(self):
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size = self["size"].value
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if size not in (16, 18):
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self.warning("Format with size of %s bytes is not supported!" % size)
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yield Enum(UInt16(self, "codec", "Audio codec"), audio_codec_name)
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yield UInt16(self, "nb_channel", "Number of audio channel")
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yield UInt32(self, "sample_per_sec", "Sample per second")
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yield UInt32(self, "byte_per_sec", "Average byte per second")
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yield UInt16(self, "block_align", "Block align")
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yield UInt16(self, "bit_per_sample", "Bits per sample")
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def parseWAVFact(self):
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yield UInt32(self, "nb_sample", "Number of samples in audio stream")
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def parseAviHeader(self):
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yield UInt32(self, "microsec_per_frame", "Microsecond per frame")
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yield UInt32(self, "max_byte_per_sec", "Maximum byte per second")
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yield NullBytes(self, "reserved", 4)
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# Flags
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yield NullBits(self, "reserved[]", 4)
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yield Bit(self, "has_index")
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yield Bit(self, "must_use_index")
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yield NullBits(self, "reserved[]", 2)
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yield Bit(self, "is_interleaved")
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yield NullBits(self, "reserved[]", 2)
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yield Bit(self, "trust_cktype")
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yield NullBits(self, "reserved[]", 4)
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yield Bit(self, "was_capture_file")
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yield Bit(self, "is_copyrighted")
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yield NullBits(self, "reserved[]", 14)
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yield UInt32(self, "total_frame", "Total number of frames in the video")
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yield UInt32(self, "init_frame", "Initial frame (used in interleaved video)")
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yield UInt32(self, "nb_stream", "Number of streams")
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yield UInt32(self, "sug_buf_size", "Suggested buffer size")
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yield UInt32(self, "width", "Width in pixel")
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yield UInt32(self, "height", "Height in pixel")
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yield UInt32(self, "scale")
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yield UInt32(self, "rate")
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yield UInt32(self, "start")
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yield UInt32(self, "length")
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def parseODML(self):
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yield UInt32(self, "total_frame", "Real number of frame of OpenDML video")
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padding = self["size"].value - 4
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if 0 < padding:
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yield NullBytes(self, "padding[]", padding)
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class AVIIndexEntry(FieldSet):
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size = 16 * 8
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def createFields(self):
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yield String(self, "tag", 4, "Tag", charset="ASCII")
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yield UInt32(self, "flags")
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yield UInt32(self, "start", "Offset from start of movie data")
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yield UInt32(self, "length")
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def parseIndex(self):
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while not self.eof:
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yield AVIIndexEntry(self, "index[]")
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class Chunk(FieldSet):
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TAG_INFO = {
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# This dictionnary is edited by RiffFile.validate()
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"LIST": ("list[]", None, "Sub-field list"),
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"JUNK": ("junk[]", None, "Junk (padding)"),
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# Metadata
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"INAM": ("title", parseText, "Document title"),
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"IART": ("artist", parseText, "Artist"),
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"ICMT": ("comment", parseText, "Comment"),
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"ICOP": ("copyright", parseText, "Copyright"),
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"IENG": ("author", parseText, "Author"),
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"ICRD": ("creation_date", parseText, "Creation date"),
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"ISFT": ("producer", parseText, "Producer"),
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"IDIT": ("datetime", parseText, "Date time"),
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# TODO: Todo: see below
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# "strn": Stream description
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# TWOCC code, movie/field[]/tag.value[2:4]:
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# "db": "Uncompressed video frame",
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# "dc": "Compressed video frame",
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# "wb": "Audio data",
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# "pc": "Palette change"
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}
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subtag_info = {
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"INFO": ("info", "File informations"),
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"hdrl": ("headers", "Headers"),
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"strl": ("stream[]", "Stream header list"),
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"movi": ("movie", "Movie stream"),
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"odml": ("odml", "ODML"),
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}
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def __init__(self, *args, **kw):
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FieldSet.__init__(self, *args, **kw)
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self._size = (8 + alignValue(self["size"].value, 2)) * 8
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tag = self["tag"].value
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if tag in self.TAG_INFO:
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self.tag_info = self.TAG_INFO[tag]
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if tag == "LIST":
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subtag = self["subtag"].value
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if subtag in self.subtag_info:
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info = self.subtag_info[subtag]
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self.tag_info = (info[0], None, info[1])
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self._name = self.tag_info[0]
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self._description = self.tag_info[2]
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else:
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self.tag_info = ("field[]", None, None)
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def createFields(self):
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yield String(self, "tag", 4, "Tag", charset="ASCII")
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yield filesizeHandler(UInt32(self, "size", "Size"))
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if not self["size"].value:
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return
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if self["tag"].value == "LIST":
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yield String(self, "subtag", 4, "Sub-tag", charset="ASCII")
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handler = self.tag_info[1]
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while 8 < (self.size - self.current_size) // 8:
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field = self.__class__(self, "field[]")
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yield field
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if (field.size // 8) % 2 != 0:
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yield UInt8(self, "padding[]", "Padding")
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else:
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handler = self.tag_info[1]
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if handler:
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yield from handler(self)
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else:
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yield RawBytes(self, "raw_content", self["size"].value)
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padding = self.seekBit(self._size)
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if padding:
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yield padding
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def createDescription(self):
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tag = self["tag"].display
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return "Chunk (tag %s)" % tag
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class ChunkAVI(Chunk):
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TAG_INFO = Chunk.TAG_INFO.copy()
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TAG_INFO.update({
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"strh": ("stream_hdr", parseAVIStreamHeader, "Stream header"),
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"strf": ("stream_fmt", parseAVIStreamFormat, "Stream format"),
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"avih": ("avi_hdr", parseAviHeader, "AVI header"),
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"idx1": ("index", parseIndex, "Stream index"),
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"dmlh": ("odml_hdr", parseODML, "ODML header"),
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})
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class ChunkCDDA(Chunk):
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TAG_INFO = Chunk.TAG_INFO.copy()
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TAG_INFO.update({
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'fmt ': ("cdda", parseCDDA, "CD audio informations"),
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})
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class ChunkWAVE(Chunk):
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TAG_INFO = Chunk.TAG_INFO.copy()
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TAG_INFO.update({
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'fmt ': ("format", parseWAVFormat, "Audio format"),
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'fact': ("nb_sample", parseWAVFact, "Number of samples"),
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'data': ("audio_data", None, "Audio stream data"),
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})
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def parseAnimationHeader(self):
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yield UInt32(self, "hdr_size", "Size of header (36 bytes)")
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if self["hdr_size"].value != 36:
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self.warning("Animation header with unknown size (%s)" %
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self["size"].value)
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yield UInt32(self, "nb_frame", "Number of unique Icons in this cursor")
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yield UInt32(self, "nb_step", "Number of Blits before the animation cycles")
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yield UInt32(self, "cx")
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yield UInt32(self, "cy")
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yield UInt32(self, "bit_count")
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yield UInt32(self, "planes")
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yield UInt32(self, "jiffie_rate", "Default Jiffies (1/60th of a second) if rate chunk not present")
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yield Bit(self, "is_icon")
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yield NullBits(self, "padding", 31)
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def parseAnimationSequence(self):
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while not self.eof:
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yield UInt32(self, "icon[]")
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def formatJiffie(field):
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sec = float(field.value) / 60
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return humanDuration(timedelta(seconds=sec))
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def parseAnimationRate(self):
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while not self.eof:
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yield textHandler(UInt32(self, "rate[]"), formatJiffie)
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def parseIcon(self):
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yield SubFile(self, "icon_file", self["size"].value, parser_class=IcoFile)
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class ChunkACON(Chunk):
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TAG_INFO = Chunk.TAG_INFO.copy()
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TAG_INFO.update({
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'anih': ("anim_hdr", parseAnimationHeader, "Animation header"),
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'seq ': ("anim_seq", parseAnimationSequence, "Animation sequence"),
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'rate': ("anim_rate", parseAnimationRate, "Animation sequence"),
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'icon': ("icon[]", parseIcon, "Icon"),
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})
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class RiffFile(Parser):
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PARSER_TAGS = {
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"id": "riff",
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"category": "container",
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"file_ext": ("avi", "cda", "wav", "ani"),
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"min_size": 16 * 8,
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"mime": ("video/x-msvideo", "audio/x-wav", "audio/x-cda"),
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# FIXME: Use regex "RIFF.{4}(WAVE|CDDA|AVI )"
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"magic": (
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(b"AVI LIST", 8 * 8),
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(b"WAVEfmt ", 8 * 8),
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(b"CDDAfmt ", 8 * 8),
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(b"ACONanih", 8 * 8),
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),
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"description": "Microsoft RIFF container"
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}
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VALID_TYPES = {
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"WAVE": (ChunkWAVE, "audio/x-wav", "Microsoft WAVE audio", ".wav"),
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"CDDA": (ChunkCDDA, "audio/x-cda", "Microsoft Windows audio CD file (cda)", ".cda"),
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"AVI ": (ChunkAVI, "video/x-msvideo", "Microsoft AVI video", ".avi"),
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"ACON": (ChunkACON, "image/x-ani", "Microsoft Windows animated cursor", ".ani"),
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}
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endian = LITTLE_ENDIAN
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def validate(self):
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if self.stream.readBytes(0, 4) != b"RIFF":
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return "Wrong signature"
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if self["type"].value not in self.VALID_TYPES:
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return "Unknown RIFF content type"
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return True
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def createFields(self):
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yield String(self, "signature", 4, "AVI header (RIFF)", charset="ASCII")
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yield filesizeHandler(UInt32(self, "filesize", "File size"))
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yield String(self, "type", 4, "Content type (\"AVI \", \"WAVE\", ...)", charset="ASCII")
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# Choose chunk type depending on file type
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try:
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chunk_cls = self.VALID_TYPES[self["type"].value][0]
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except KeyError:
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chunk_cls = Chunk
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# Parse all chunks up to filesize
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while self.current_size < self["filesize"].value * 8 + 8:
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yield chunk_cls(self, "chunk[]")
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if not self.eof:
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yield RawBytes(self, "padding[]", (self.size - self.current_size) // 8)
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def createMimeType(self):
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try:
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return self.VALID_TYPES[self["type"].value][1]
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except KeyError:
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return None
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def createDescription(self):
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tag = self["type"].value
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if tag == "AVI ":
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desc = "Microsoft AVI video"
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if "headers/avi_hdr" in self:
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header = self["headers/avi_hdr"]
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desc += ": %ux%u pixels" % (header["width"].value,
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header["height"].value)
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microsec = header["microsec_per_frame"].value
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if microsec:
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desc += ", %.1f fps" % (1000000.0 / microsec)
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if "total_frame" in header and header["total_frame"].value:
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delta = timedelta(seconds=float(
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header["total_frame"].value) * microsec)
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desc += ", " + humanDuration(delta)
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return desc
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else:
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try:
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return self.VALID_TYPES[tag][2]
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except KeyError:
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return "Microsoft RIFF container"
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def createContentSize(self):
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size = (self["filesize"].value + 8) * 8
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return min(size, self.stream.size)
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def createFilenameSuffix(self):
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|
try:
|
|
return self.VALID_TYPES[self["type"].value][3]
|
|
except KeyError:
|
|
return ".riff"
|