diff options
Diffstat (limited to 'common_audio/include')
| -rw-r--r-- | common_audio/include/audio_util.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/common_audio/include/audio_util.h b/common_audio/include/audio_util.h index 2196fc34..5e86c1f0 100644 --- a/common_audio/include/audio_util.h +++ b/common_audio/include/audio_util.h @@ -15,6 +15,20 @@ namespace webrtc { +// Clamp the floating |value| to the range representable by an int16_t. +static inline float ClampInt16(float value) { + const float kMaxInt16 = 32767.f; + const float kMinInt16 = -32768.f; + return value < kMinInt16 ? kMinInt16 : + (value > kMaxInt16 ? kMaxInt16 : value); +} + +// Return a rounded int16_t of the floating |value|. Doesn't handle overflow; +// use ClampInt16 if necessary. +static inline int16_t RoundToInt16(float value) { + return static_cast<int16_t>(value < 0.f ? value - 0.5f : value + 0.5f); +} + // Deinterleave audio from |interleaved| to the channel buffers pointed to // by |deinterleaved|. There must be sufficient space allocated in the // |deinterleaved| buffers (|num_channel| buffers with |samples_per_channel| |