1 files changed, 64 insertions, 0 deletions
diff --git a/utils/midiplay/audio.h b/utils/midiplay/audio.h
new file mode 100644
index 0000000..ee770ed
--- /dev/null
+++ b/utils/midiplay/audio.h
@@ -0,0 +1,64 @@
+/*
+ * ADLMIDI Player is a free MIDI player based on a libADLMIDI,
+ * a Software MIDI synthesizer library with OPL3 emulation
+ *
+ * Original ADLMIDI code: Copyright (c) 2010-2014 Joel Yliluoma <bisqwit@iki.fi>
+ * ADLMIDI Library API:   Copyright (c) 2015-2019 Vitaly Novichkov <admin@wohlnet.ru>
+ *
+ * Library is based on the ADLMIDI, a MIDI player for Linux and Windows with OPL3 emulation:
+ * http://iki.fi/bisqwit/source/adlmidi.html
+ *
+ * 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 3 of the License, or
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+typedef void (*AudioOutputCallback)(void *, unsigned char *stream, int len);
+
+struct AudioOutputSpec
+{
+    unsigned int freq;
+    unsigned short format;
+    unsigned short is_msb;
+    unsigned short samples;
+    unsigned char  channels;
+};
+
+extern int audio_init(struct AudioOutputSpec *in_spec, struct AudioOutputSpec *out_obtained, AudioOutputCallback callback);
+
+extern void audio_close();
+
+extern const char* audio_get_error();
+
+extern void audio_start();
+
+extern void audio_stop();
+
+extern void audio_lock();
+
+extern void audio_unlock();
+
+extern void audio_delay(unsigned int ms);
+
+extern void* audio_mutex_create();
+extern void  audio_mutex_destroy(void*m);
+extern void  audio_mutex_lock(void*m);
+extern void  audio_mutex_unlock(void*m);
+
+#ifdef __cplusplus
+}
+#endif