[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, 93 deletions

diff --git a/vendor/github.com/golang/geo/s2/query_entry.go b/vendor/github.com/golang/geo/s2/query_entry.go
deleted file mode 100644
index 65e819e3a..000000000
--- a/vendor/github.com/golang/geo/s2/query_entry.go
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright 2020 Google Inc. All rights reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package s2
-
-import "container/heap"
-
-// A queryQueueEntry stores CellIDs and distance from a target. It is used by the
-// different S2 Query types to efficiently build their internal priority queue
-// in the optimized algorithm implementations.
-type queryQueueEntry struct {
-	// A lower bound on the distance from the target to ID. This is the key
-	// of the priority queue.
-	distance distance
-
-	// The cell being queued.
-	id CellID
-
-	// If the CellID belongs to a ShapeIndex, this field stores the
-	// corresponding ShapeIndexCell. Otherwise ID is a proper ancestor of
-	// one or more ShapeIndexCells and this field stores is nil.
-	indexCell *ShapeIndexCell
-}
-
-// queryQueue is used by the optimized algorithm to maintain a priority queue of
-// unprocessed CellIDs, sorted in increasing order of distance from the target.
-type queryQueue struct {
-	queue queryPQ
-}
-
-// newQueryQueue returns a new initialized queryQueue.
-func newQueryQueue() *queryQueue {
-	q := &queryQueue{
-		queue: make(queryPQ, 0),
-	}
-	heap.Init(&q.queue)
-	return q
-}
-
-// push adds the given entry to the top of this queue.
-func (q *queryQueue) push(e *queryQueueEntry) {
-	heap.Push(&q.queue, e)
-}
-
-// pop returns the top element of this queue.
-func (q *queryQueue) pop() *queryQueueEntry {
-	return heap.Pop(&q.queue).(*queryQueueEntry)
-}
-
-func (q *queryQueue) size() int {
-	return q.queue.Len()
-}
-
-func (q *queryQueue) reset() {
-	q.queue = q.queue[:0]
-}
-
-// queryPQ is a priority queue that implements the heap interface.
-type queryPQ []*queryQueueEntry
-
-func (q queryPQ) Len() int { return len(q) }
-func (q queryPQ) Less(i, j int) bool {
-	return q[i].distance.less(q[j].distance)
-}
-
-// Swap swaps the two entries.
-func (q queryPQ) Swap(i, j int) {
-	q[i], q[j] = q[j], q[i]
-}
-
-// Push adds the given entry to the queue.
-func (q *queryPQ) Push(x interface{}) {
-	item := x.(*queryQueueEntry)
-	*q = append(*q, item)
-}
-
-// Pop returns the top element of the queue.
-func (q *queryPQ) Pop() interface{} {
-	item := (*q)[len(*q)-1]
-	*q = (*q)[:len(*q)-1]
-	return item
-}