Refactor TmpFile into an abstract base class

This allows a TmpFile pointer to be either a Sync or Async (Threaded)
writer. As result we must be able to handle both RT and non RT processing.

Still, post-processing (normalization and encoding) should always
happen faster than realtime (freewheeling).

Since jack does not allow a client to change to freewheeling from within
the process-callback, the async-writer disk-thread FileFlushed is used
to initiate post-processing.

1 files changed, 5 insertions, 27 deletions

diff --git a/libs/audiographer/audiographer/sndfile/tmp_file.h b/libs/audiographer/audiographer/sndfile/tmp_file.h
index c53557beda..d6bc5546a5 100644
--- a/libs/audiographer/audiographer/sndfile/tmp_file.h
+++ b/libs/audiographer/audiographer/sndfile/tmp_file.h
@@ -15,36 +15,14 @@ namespace AudioGrapher
 
 /// A temporary file deleted after this class is destructed
 template<typename T = DefaultSampleType>
-class TmpFile : public SndfileWriter<T>, public SndfileReader<T>
+class TmpFile
+	: public SndfileWriter<T>
+	, public SndfileReader<T>
 {
   public:
+	virtual ~TmpFile () {}
+	PBD::Signal0<void> FileFlushed;
 
-	/// \a filename_template must match the requirements for mkstemp, i.e. end in "XXXXXX"
-	TmpFile (char * filename_template, int format, ChannelCount channels, framecnt_t samplerate)
-		: SndfileHandle (g_mkstemp(filename_template), true, SndfileBase::ReadWrite, format, channels, samplerate)
-		, filename (filename_template)
-	{}
-
-	TmpFile (int format, ChannelCount channels, framecnt_t samplerate)
-	  : SndfileHandle (fileno (tmpfile()), true, SndfileBase::ReadWrite, format, channels, samplerate)
-	{}
-
-	TmpFile (TmpFile const & other) : SndfileHandle (other) {}
-	using SndfileHandle::operator=;
-
-	~TmpFile()
-	{
-		/* explicitly close first, some OS (yes I'm looking at you windows)
-		 * cannot delete files that are still open
-		 */
-		if (!filename.empty()) {
-			SndfileBase::close();
-			std::remove(filename.c_str());
-		}
-	}
-
-  private:
-	std::string filename;
 };
 
 } // namespace