diff options
Diffstat (limited to 'include/hardware/audio.h')
| -rw-r--r-- | include/hardware/audio.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/hardware/audio.h b/include/hardware/audio.h index b53cbff..6c28def 100644 --- a/include/hardware/audio.h +++ b/include/hardware/audio.h @@ -260,6 +260,11 @@ typedef enum { */ struct audio_stream_out { + /** + * Common methods of the audio stream out. This *must* be the first member of audio_stream_out + * as users of this structure will cast a audio_stream to audio_stream_out pointer in contexts + * where it's known the audio_stream references an audio_stream_out. + */ struct audio_stream common; /** @@ -383,6 +388,11 @@ struct audio_stream_out { typedef struct audio_stream_out audio_stream_out_t; struct audio_stream_in { + /** + * Common methods of the audio stream in. This *must* be the first member of audio_stream_in + * as users of this structure will cast a audio_stream to audio_stream_in pointer in contexts + * where it's known the audio_stream references an audio_stream_in. + */ struct audio_stream common; /** set the input gain for the audio driver. This method is for @@ -439,6 +449,11 @@ struct audio_module { }; struct audio_hw_device { + /** + * Common methods of the audio device. This *must* be the first member of audio_hw_device + * as users of this structure will cast a hw_device_t to audio_hw_device pointer in contexts + * where it's known the hw_device_t references an audio_hw_device. + */ struct hw_device_t common; /** |