1 files changed, 57 insertions, 0 deletions
diff --git a/trunk/src/pcm_utils.h b/trunk/src/pcm_utils.h
new file mode 100644
index 000000000..2c6610a75
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+++ b/trunk/src/pcm_utils.h
@@ -0,0 +1,57 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef PCM_UTILS_H
+#define PCM_UTILS_H
+
+#include "../config.h"
+
+#include "audio.h"
+
+#include <stdlib.h>
+
+#ifdef HAVE_LIBSAMPLERATE
+#include <samplerate.h>
+#endif
+
+typedef struct _ConvState {
+#ifdef HAVE_LIBSAMPLERATE
+	SRC_STATE *state;
+	SRC_DATA data;
+	size_t dataInSize;
+	size_t dataOutSize;
+	mpd_sint8 lastChannels;
+	mpd_sint32 lastInSampleRate;
+	mpd_sint32 lastOutSampleRate;
+	int error;
+#endif
+} ConvState;
+
+void pcm_volumeChange(char *buffer, int bufferSize, AudioFormat * format,
+                      int volume);
+
+void pcm_mix(char *buffer1, char *buffer2, size_t bufferSize1,
+             size_t bufferSize2, AudioFormat * format, float portion1);
+
+size_t pcm_convertAudioFormat(AudioFormat * inFormat, char *inBuffer,
+                              size_t inSize, AudioFormat * outFormat,
+                              char *outBuffer, ConvState *convState);
+
+size_t pcm_sizeOfConvBuffer(AudioFormat * inFormat, size_t inSize,
+                            AudioFormat * outFormat);
+#endif