[feature] support processing of (many) more media types (#3090)

* initial work replacing our media decoding / encoding pipeline with ffprobe + ffmpeg

* specify the video codec to use when generating static image from emoji

* update go-storage library (fixes incompatibility after updating go-iotools)

* maintain image aspect ratio when generating a thumbnail for it

* update readme to show go-ffmpreg

* fix a bunch of media tests, move filesize checking to callers of media manager for more flexibility

* remove extra debug from error message

* fix up incorrect function signatures

* update PutFile to just use regular file copy, as changes are file is on separate partition

* fix remaining tests, remove some unneeded tests now we're working with ffmpeg/ffprobe

* update more tests, add more code comments

* add utilities to generate processed emoji / media outputs

* fix remaining tests

* add test for opus media file, add license header to utility cmds

* limit the number of concurrently available ffmpeg / ffprobe instances

* reduce number of instances

* further reduce number of instances

* fix envparsing test with configuration variables

* update docs and configuration with new media-{local,remote}-max-size variables

1 files changed, 0 insertions, 62 deletions

diff --git a/vendor/github.com/dsoprea/go-exif/v3/undefined/accessor.go b/vendor/github.com/dsoprea/go-exif/v3/undefined/accessor.go
deleted file mode 100644
index 11a21e1f0..000000000
--- a/vendor/github.com/dsoprea/go-exif/v3/undefined/accessor.go
+++ /dev/null
@@ -1,62 +0,0 @@
-package exifundefined
-
-import (
-	"encoding/binary"
-
-	"github.com/dsoprea/go-logging"
-
-	"github.com/dsoprea/go-exif/v3/common"
-)
-
-// Encode encodes the given encodeable undefined value to bytes.
-func Encode(value EncodeableValue, byteOrder binary.ByteOrder) (encoded []byte, unitCount uint32, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	encoderName := value.EncoderName()
-
-	encoder, found := encoders[encoderName]
-	if found == false {
-		log.Panicf("no encoder registered for type [%s]", encoderName)
-	}
-
-	encoded, unitCount, err = encoder.Encode(value, byteOrder)
-	log.PanicIf(err)
-
-	return encoded, unitCount, nil
-}
-
-// Decode constructs a value from raw encoded bytes
-func Decode(valueContext *exifcommon.ValueContext) (value EncodeableValue, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	uth := UndefinedTagHandle{
-		IfdPath: valueContext.IfdPath(),
-		TagId:   valueContext.TagId(),
-	}
-
-	decoder, found := decoders[uth]
-	if found == false {
-		// We have no choice but to return the error. We have no way of knowing how
-		// much data there is without already knowing what data-type this tag is.
-		return nil, exifcommon.ErrUnhandledUndefinedTypedTag
-	}
-
-	value, err = decoder.Decode(valueContext)
-	if err != nil {
-		if err == ErrUnparseableValue {
-			return nil, err
-		}
-
-		log.Panic(err)
-	}
-
-	return value, nil
-}