diff options
Diffstat (limited to 'src/pcm_utils.h')
| -rw-r--r-- | src/pcm_utils.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/src/pcm_utils.h b/src/pcm_utils.h index 93f414231..15f9e1b10 100644 --- a/src/pcm_utils.h +++ b/src/pcm_utils.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2009 The Music Player Daemon Project + * Copyright (C) 2003-2010 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify @@ -38,4 +38,18 @@ pcm_range(int32_t sample, unsigned bits) return sample; } +/** + * Check if the value is within the range of the provided bit size, + * and caps it if necessary. + */ +static inline int64_t +pcm_range_64(int64_t sample, unsigned bits) +{ + if (G_UNLIKELY(sample < ((int64_t)-1 << (bits - 1)))) + return (int64_t)-1 << (bits - 1); + if (G_UNLIKELY(sample >= ((int64_t)1 << (bits - 1)))) + return ((int64_t)1 << (bits - 1)) - 1; + return sample; +} + #endif |