tmp_file_sync.h

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#ifndef AUDIOGRAPHER_TMP_FILE_SYNC_H
#define AUDIOGRAPHER_TMP_FILE_SYNC_H
 
#include <cstdio>
#include <string>
 
#include <glib.h>
#include "pbd/gstdio_compat.h"
 
#include "sndfile_writer.h"
#include "sndfile_reader.h"
#include "tmp_file.h"
 
namespace AudioGrapher
{
 
template<typename T = DefaultSampleType>
class TmpFileSync
        : public TmpFile<T>
{
  public:
 
        TmpFileSync (char * filename_template, int format, ChannelCount channels, samplecnt_t samplerate)
                : SndfileHandle (g_mkstemp(filename_template), true, SndfileBase::ReadWrite, format, channels, samplerate)
                , filename (filename_template)
        {}
 
        TmpFileSync (int format, ChannelCount channels, samplecnt_t samplerate)
          : SndfileHandle (fileno (tmpfile()), true, SndfileBase::ReadWrite, format, channels, samplerate)
        {}
 
        TmpFileSync (TmpFileSync const & other) : SndfileHandle (other) {}
        using SndfileHandle::operator=;
 
        ~TmpFileSync()
        {
                /* 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());
                }
        }
 
        void process (ProcessContext<T> const & c)
        {
                SndfileWriter<T>::process (c);
 
                if (c.has_flag(ProcessContext<T>::EndOfInput)) {
                        TmpFile<T>::FileFlushed ();
                }
        }
 
        using Sink<T>::process;
 
  private:
        std::string filename;
};
 
} // namespace
 
#endif // AUDIOGRAPHER_TMP_FILE_SYNC_H