wavpack: be more robust if the underlying stream is not seekable

The wavpack open function gives us an option called OPEN_STREAMING. This provides more robust and error tolerant playback, but it automatically disables seeking. (More exactly the wavpack lib will not return the length information.) So, if the stream is already not seekable we can use this option safely.

wavpack: be more robust if the underlying stream is not seekable
440b1ea3 · László Áshin · Max Kellermann · c495c6f5 · 440b1ea3
Commit 440b1ea3 authored Nov 14, 2008 by László Áshin Committed by Max Kellermann Nov 14, 2008
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wavpack_plugin.c src/decoder/wavpack_plugin.c +5 -1

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--- a/src/decoder/wavpack_plugin.c
+++ b/src/decoder/wavpack_plugin.c
@@ -494,7 +494,7 @@ wavpack_streamdecode(struct decoder * decoder, struct input_stream *is)
 	char error[ERRORLEN];
 	WavpackContext *wpc;
 	struct input_stream is_wvc;
-	int open_flags = OPEN_2CH_MAX | OPEN_NORMALIZE /*| OPEN_STREAMING*/;
+	int open_flags = OPEN_2CH_MAX | OPEN_NORMALIZE;
 	struct wavpack_input isp, isp_wvc;
 	bool can_seek = is->seekable;

@@ -503,6 +503,10 @@ wavpack_streamdecode(struct decoder * decoder, struct input_stream *is)
 		can_seek &= is_wvc.seekable;
 	}

+	if (!can_seek) {
+		open_flags |= OPEN_STREAMING;
+	}
+
 	wavpack_input_init(&isp, decoder, is);
 	wpc = WavpackOpenFileInputEx(
 		&mpd_is_reader, &isp, &isp_wvc, error, open_flags, 23