1 files changed, 62 insertions, 0 deletions
diff --git a/src/pulsecore/mix.h b/src/pulsecore/mix.h
new file mode 100644
index 0000000..8102bcd
--- /dev/null
+++ b/src/pulsecore/mix.h
@@ -0,0 +1,62 @@
+#ifndef foomixhfoo
+#define foomixhfoo
+
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 Lennart Poettering
+  Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
+  Copyright 2013 Peter Meerwald <pmeerw@pmeerw.net>
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2.1 of the License,
+  or (at your option) any later version.
+
+  PulseAudio 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 Lesser General Public License
+  along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <pulse/sample.h>
+#include <pulse/volume.h>
+#include <pulsecore/memchunk.h>
+
+typedef struct pa_mix_info {
+    pa_memchunk chunk;
+    pa_cvolume volume;
+    void *userdata;
+
+    /* The following fields are used internally by pa_mix(), should
+     * not be initialised by the caller of pa_mix(). */
+    void *ptr;
+    union {
+        int32_t i;
+        float f;
+    } linear[PA_CHANNELS_MAX];
+} pa_mix_info;
+
+size_t pa_mix(
+    pa_mix_info channels[],
+    unsigned nchannels,
+    void *data,
+    size_t length,
+    const pa_sample_spec *spec,
+    const pa_cvolume *volume,
+    bool mute);
+
+typedef void (*pa_do_mix_func_t) (pa_mix_info streams[], unsigned nstreams, unsigned channels, void *data, unsigned length);
+
+pa_do_mix_func_t pa_get_mix_func(pa_sample_format_t f);
+void pa_set_mix_func(pa_sample_format_t f, pa_do_mix_func_t func);
+
+void pa_volume_memchunk(
+    pa_memchunk*c,
+    const pa_sample_spec *spec,
+    const pa_cvolume *volume);
+
+#endif