[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, 71 insertions, 0 deletions

diff --git a/vendor/github.com/tetratelabs/wazero/internal/wasip1/sock.go b/vendor/github.com/tetratelabs/wazero/internal/wasip1/sock.go
new file mode 100644
index 000000000..90d33ece8
--- /dev/null
+++ b/vendor/github.com/tetratelabs/wazero/internal/wasip1/sock.go
@@ -0,0 +1,71 @@
+package wasip1
+
+import "strconv"
+
+const (
+	SockAcceptName   = "sock_accept"
+	SockRecvName     = "sock_recv"
+	SockSendName     = "sock_send"
+	SockShutdownName = "sock_shutdown"
+)
+
+// SD Flags indicate which channels on a socket to shut down.
+// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-sdflags-flagsu8
+const (
+	// SD_RD disables further receive operations.
+	SD_RD uint8 = 1 << iota //nolint
+	// SD_WR disables further send operations.
+	SD_WR
+)
+
+func SdFlagsString(sdflags int) string {
+	return flagsString(sdflagNames[:], sdflags)
+}
+
+var sdflagNames = [...]string{
+	"RD",
+	"WR",
+}
+
+// SI Flags are flags provided to sock_send. As there are currently no flags defined, it must be set to zero.
+// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-siflags-u16
+
+func SiFlagsString(siflags int) string {
+	if siflags == 0 {
+		return ""
+	}
+	return strconv.Itoa(siflags)
+}
+
+// RI Flags are flags provided to sock_recv.
+// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-riflags-flagsu16
+const (
+	// RI_RECV_PEEK returns the message without removing it from the socket's receive queue
+	RI_RECV_PEEK uint8 = 1 << iota //nolint
+	// RI_RECV_WAITALL on byte-stream sockets, block until the full amount of data can be returned.
+	RI_RECV_WAITALL
+)
+
+func RiFlagsString(riflags int) string {
+	return flagsString(riflagNames[:], riflags)
+}
+
+var riflagNames = [...]string{
+	"RECV_PEEK",
+	"RECV_WAITALL",
+}
+
+// RO Flags are flags returned by sock_recv.
+// https://github.com/WebAssembly/WASI/blob/snapshot-01/phases/snapshot/docs.md#-roflags-flagsu16
+const (
+	// RO_RECV_DATA_TRUNCATED is returned by sock_recv when message data has been truncated.
+	RO_RECV_DATA_TRUNCATED uint8 = 1 << iota //nolint
+)
+
+func RoFlagsString(roflags int) string {
+	return flagsString(roflagNames[:], roflags)
+}
+
+var roflagNames = [...]string{
+	"RECV_DATA_TRUNCATED",
+}