| /* |
| * Copyright 2013 Google Inc. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| * |
| * Alternatively, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2 as published by the Free |
| * Software Foundation. |
| */ |
| |
| #ifndef __DRIVERS_SOUND_SOUND_H__ |
| #define __DRIVERS_SOUND_SOUND_H__ |
| |
| #include <stdint.h> |
| |
| typedef struct SoundOps |
| { |
| int (*start)(struct SoundOps *me, uint32_t frequency); |
| int (*stop)(struct SoundOps *me); |
| int (*play)(struct SoundOps *me, uint32_t msec, uint32_t frequency); |
| int (*set_volume)(struct SoundOps *me, uint32_t volume); |
| } SoundOps; |
| |
| void sound_set_ops(SoundOps *ops); |
| |
| int sound_start(uint32_t frequency); |
| int sound_stop(void); |
| int sound_play(uint32_t msec, uint32_t frequency); |
| /* |
| * An API which uses a callback optionally provided by the driver. The volume |
| * parameter is an abstract number in 0..100 range. |
| */ |
| int sound_set_volume(uint32_t volume); |
| |
| #endif /* __DRIVERS_SOUND_SOUND_H__ */ |
