[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, 117 deletions

diff --git a/vendor/github.com/dsoprea/go-exif/v3/gps.go b/vendor/github.com/dsoprea/go-exif/v3/gps.go
deleted file mode 100644
index 7a61cd94d..000000000
--- a/vendor/github.com/dsoprea/go-exif/v3/gps.go
+++ /dev/null
@@ -1,117 +0,0 @@
-package exif
-
-import (
-	"errors"
-	"fmt"
-	"time"
-
-	"github.com/dsoprea/go-logging"
-	"github.com/golang/geo/s2"
-
-	"github.com/dsoprea/go-exif/v3/common"
-)
-
-var (
-	// ErrGpsCoordinatesNotValid means that some part of the geographic data was
-	// unparseable.
-	ErrGpsCoordinatesNotValid = errors.New("GPS coordinates not valid")
-)
-
-// GpsDegrees is a high-level struct representing geographic data.
-type GpsDegrees struct {
-	// Orientation describes the N/E/S/W direction that this position is
-	// relative to.
-	Orientation byte
-
-	// Degrees is a simple float representing the underlying rational degrees
-	// amount.
-	Degrees float64
-
-	// Minutes is a simple float representing the underlying rational minutes
-	// amount.
-	Minutes float64
-
-	// Seconds is a simple float representing the underlying ration seconds
-	// amount.
-	Seconds float64
-}
-
-// NewGpsDegreesFromRationals returns a GpsDegrees struct given the EXIF-encoded
-// information. The refValue is the N/E/S/W direction that this position is
-// relative to.
-func NewGpsDegreesFromRationals(refValue string, rawCoordinate []exifcommon.Rational) (gd GpsDegrees, err error) {
-	defer func() {
-		if state := recover(); state != nil {
-			err = log.Wrap(state.(error))
-		}
-	}()
-
-	if len(rawCoordinate) != 3 {
-		log.Panicf("new GpsDegrees struct requires a raw-coordinate with exactly three rationals")
-	}
-
-	gd = GpsDegrees{
-		Orientation: refValue[0],
-		Degrees:     float64(rawCoordinate[0].Numerator) / float64(rawCoordinate[0].Denominator),
-		Minutes:     float64(rawCoordinate[1].Numerator) / float64(rawCoordinate[1].Denominator),
-		Seconds:     float64(rawCoordinate[2].Numerator) / float64(rawCoordinate[2].Denominator),
-	}
-
-	return gd, nil
-}
-
-// String provides returns a descriptive string.
-func (d GpsDegrees) String() string {
-	return fmt.Sprintf("Degrees<O=[%s] D=(%g) M=(%g) S=(%g)>", string([]byte{d.Orientation}), d.Degrees, d.Minutes, d.Seconds)
-}
-
-// Decimal calculates and returns the simplified float representation of the
-// component degrees.
-func (d GpsDegrees) Decimal() float64 {
-	decimal := float64(d.Degrees) + float64(d.Minutes)/60.0 + float64(d.Seconds)/3600.0
-
-	if d.Orientation == 'S' || d.Orientation == 'W' {
-		return -decimal
-	}
-
-	return decimal
-}
-
-// Raw returns a Rational struct that can be used to *write* coordinates. In
-// practice, the denominator are typically (1) in the original EXIF data, and,
-// that being the case, this will best preserve precision.
-func (d GpsDegrees) Raw() []exifcommon.Rational {
-	return []exifcommon.Rational{
-		{Numerator: uint32(d.Degrees), Denominator: 1},
-		{Numerator: uint32(d.Minutes), Denominator: 1},
-		{Numerator: uint32(d.Seconds), Denominator: 1},
-	}
-}
-
-// GpsInfo encapsulates all of the geographic information in one place.
-type GpsInfo struct {
-	Latitude, Longitude GpsDegrees
-	Altitude            int
-	Timestamp           time.Time
-}
-
-// String returns a descriptive string.
-func (gi *GpsInfo) String() string {
-	return fmt.Sprintf("GpsInfo<LAT=(%.05f) LON=(%.05f) ALT=(%d) TIME=[%s]>",
-		gi.Latitude.Decimal(), gi.Longitude.Decimal(), gi.Altitude, gi.Timestamp)
-}
-
-// S2CellId returns the cell-ID of the geographic location on the earth.
-func (gi *GpsInfo) S2CellId() s2.CellID {
-	latitude := gi.Latitude.Decimal()
-	longitude := gi.Longitude.Decimal()
-
-	ll := s2.LatLngFromDegrees(latitude, longitude)
-	cellId := s2.CellIDFromLatLng(ll)
-
-	if cellId.IsValid() == false {
-		panic(ErrGpsCoordinatesNotValid)
-	}
-
-	return cellId
-}