[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, 101 deletions

diff --git a/vendor/github.com/dsoprea/go-iptc/standard.go b/vendor/github.com/dsoprea/go-iptc/standard.go
deleted file mode 100644
index 307aa5a87..000000000
--- a/vendor/github.com/dsoprea/go-iptc/standard.go
+++ /dev/null
@@ -1,101 +0,0 @@
-package iptc
-
-import (
-	"errors"
-)
-
-// StreamTagInfo encapsulates the properties of each tag.
-type StreamTagInfo struct {
-	// Description is the human-readable description of the tag.
-	Description string
-}
-
-var (
-	standardTags = map[StreamTagKey]StreamTagInfo{
-		{1, 120}: {"ARM Identifier"},
-
-		{1, 122}: {"ARM Version"},
-		{2, 0}:   {"Record Version"},
-		{2, 3}:   {"Object Type Reference"},
-		{2, 4}:   {"Object Attribute Reference"},
-		{2, 5}:   {"Object Name"},
-		{2, 7}:   {"Edit Status"},
-		{2, 8}:   {"Editorial Update"},
-		{2, 10}:  {"Urgency"},
-		{2, 12}:  {"Subject Reference"},
-		{2, 15}:  {"Category"},
-		{2, 20}:  {"Supplemental Category"},
-		{2, 22}:  {"Fixture Identifier"},
-		{2, 25}:  {"Keywords"},
-		{2, 26}:  {"Content Location Code"},
-		{2, 27}:  {"Content Location Name"},
-		{2, 30}:  {"Release Date"},
-		{2, 35}:  {"Release Time"},
-		{2, 37}:  {"Expiration Date"},
-		{2, 38}:  {"Expiration Time"},
-		{2, 40}:  {"Special Instructions"},
-		{2, 42}:  {"Action Advised"},
-		{2, 45}:  {"Reference Service"},
-		{2, 47}:  {"Reference Date"},
-		{2, 50}:  {"Reference Number"},
-		{2, 55}:  {"Date Created"},
-		{2, 60}:  {"Time Created"},
-		{2, 62}:  {"Digital Creation Date"},
-		{2, 63}:  {"Digital Creation Time"},
-		{2, 65}:  {"Originating Program"},
-		{2, 70}:  {"Program Version"},
-		{2, 75}:  {"Object Cycle"},
-		{2, 80}:  {"By-line"},
-		{2, 85}:  {"By-line Title"},
-		{2, 90}:  {"City"},
-		{2, 92}:  {"Sublocation"},
-		{2, 95}:  {"Province/State"},
-		{2, 100}: {"Country/Primary Location Code"},
-		{2, 101}: {"Country/Primary Location Name"},
-		{2, 103}: {"Original Transmission Reference"},
-		{2, 105}: {"Headline"},
-		{2, 110}: {"Credit"},
-		{2, 115}: {"Source"},
-		{2, 116}: {"Copyright Notice"},
-		{2, 118}: {"Contact"},
-		{2, 120}: {"Caption/Abstract"},
-		{2, 122}: {"Writer/Editor"},
-		{2, 125}: {"Rasterized Caption"},
-		{2, 130}: {"Image Type"},
-		{2, 131}: {"Image Orientation"},
-		{2, 135}: {"Language Identifier"},
-		{2, 150}: {"Audio Type"},
-		{2, 151}: {"Audio Sampling Rate"},
-		{2, 152}: {"Audio Sampling Resolution"},
-		{2, 153}: {"Audio Duration"},
-		{2, 154}: {"Audio Outcue"},
-		{2, 200}: {"ObjectData Preview File Format"},
-		{2, 201}: {"ObjectData Preview File Format Version"},
-		{2, 202}: {"ObjectData Preview Data"},
-		{7, 10}:  {"Size Mode"},
-		{7, 20}:  {"Max Subfile Size"},
-		{7, 90}:  {"ObjectData Size Announced"},
-		{7, 95}:  {"Maximum ObjectData Size"},
-		{8, 10}:  {"Subfile"},
-		{9, 10}:  {"Confirmed ObjectData Size"},
-	}
-)
-
-var (
-	// ErrTagNotStandard indicates that the given tag is not known among the
-	// documented standard set.
-	ErrTagNotStandard = errors.New("not a standard tag")
-)
-
-// GetTagInfo return the info for the given tag. Returns ErrTagNotStandard if
-// not known.
-func GetTagInfo(recordNumber, datasetNumber int) (sti StreamTagInfo, err error) {
-	stk := StreamTagKey{uint8(recordNumber), uint8(datasetNumber)}
-
-	sti, found := standardTags[stk]
-	if found == false {
-		return sti, ErrTagNotStandard
-	}
-
-	return sti, nil
-}