input/InputStream: pass std::span<std::byte> to Read()

src/decoder/plugins/FfmpegIo.hxx

@@ -1,14 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 // Copyright The Music Player Daemon Project
 
-#ifndef MPD_FFMPEG_IO_HXX
-#define MPD_FFMPEG_IO_HXX
+#pragma once
 
 extern "C" {
 #include "libavformat/avio.h"
 }
 
+#include <cstddef>
 #include <cstdint>
+#include <span>
 
 class DecoderClient;
 class InputStream;
@@ -27,11 +28,9 @@ struct AvioStream {
 	bool Open();
 
 private:
-	int Read(void *buffer, int size);
+	int Read(std::span<std::byte> dest);
 	int64_t Seek(int64_t pos, int whence);
 
 	static int _Read(void *opaque, uint8_t *buf, int size);
 	static int64_t _Seek(void *opaque, int64_t pos, int whence);
 };
-
-#endif