Hi!
Since last time I realized that the FILE* structure can handle
write-buffering, so I rewrote my patch to use the standard solution. It
makes a real performance difference recording massive audio.
Attached.
bye
--- AmAudioFile.h 2012-07-03 15:25:30.000000000 +0200
+++ AmAudioFile.h 2013-03-04 13:08:10.000000000 +0100
@@ -107,6 +107,8 @@
/** internal function for opening the file */
int fpopen_int(const string& filename, OpenMode mode, FILE* n_fp, const string& subtype);
+ char* write_buffer;
+
public:
AmSharedVar<bool> loop;
AmSharedVar<bool> autorewind;
--- AmAudioFile.cpp 2012-07-03 15:25:30.000000000 +0200
+++ AmAudioFile.cpp 2013-03-05 15:52:48.705385034 +0100
@@ -31,6 +31,9 @@
#include <string.h>
+#define WRITE_BUFFER_SIZE (40960)
+
+
AmAudioFileFormat::AmAudioFileFormat(const string& name, int subtype)
: name(name), subtype(subtype), p_subtype(0)
{
@@ -156,6 +159,11 @@
return -1;
}
}
+ if (mode == AmAudioFile::Write && write_buffer == NULL)
+ {
+ write_buffer = new char[WRITE_BUFFER_SIZE];
+ setbuffer(n_fp, write_buffer, WRITE_BUFFER_SIZE);
+ }
return fpopen_int(f_name, mode, n_fp, subtype);
}
@@ -243,13 +251,19 @@
: AmBufferedAudio(0, 0, 0), data_size(0),
fp(0), begin(0), loop(false), autorewind(false),
on_close_done(false),
- close_on_exit(true)
+ close_on_exit(true),
+ write_buffer(NULL)
{
}
AmAudioFile::~AmAudioFile()
{
close();
+ if (write_buffer != NULL)
+ {
+ delete[] write_buffer;
+ write_buffer = NULL;
+ }
}
void AmAudioFile::rewind()
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