From ef99d6ce3d9b82cb249ae08b390049a6f9cd9d56 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Fri, 1 Feb 2013 13:50:10 +0100
Subject: PcmUtils: remove pcm_range(), use PcmClamp() instead

---
 src/PcmMix.cxx    | 16 ++++++++--------
 src/PcmUtils.hxx  | 24 ------------------------
 src/PcmVolume.cxx |  8 ++++----
 3 files changed, 12 insertions(+), 36 deletions(-)

(limited to 'src')

diff --git a/src/PcmMix.cxx b/src/PcmMix.cxx
index 4f8f3882c..79a3ba645 100644
--- a/src/PcmMix.cxx
+++ b/src/PcmMix.cxx
@@ -37,7 +37,7 @@ pcm_add_vol_8(int8_t *buffer1, const int8_t *buffer2,
 			   pcm_volume_dither() + PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer1++ = pcm_range(sample1, 8);
+		*buffer1++ = PcmClamp<int8_t, int32_t, 8>(sample1);
 		--num_samples;
 	}
 }
@@ -54,7 +54,7 @@ pcm_add_vol_16(int16_t *buffer1, const int16_t *buffer2,
 			   pcm_volume_dither() + PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer1++ = pcm_range(sample1, 16);
+		*buffer1++ = PcmClamp<int16_t, int32_t, 16>(sample1);
 		--num_samples;
 	}
 }
@@ -71,7 +71,7 @@ pcm_add_vol_24(int32_t *buffer1, const int32_t *buffer2,
 			   pcm_volume_dither() + PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer1++ = pcm_range(sample1, 24);
+		*buffer1++ = PcmClamp<int32_t, int64_t, 24>(sample1);
 		--num_samples;
 	}
 }
@@ -88,7 +88,7 @@ pcm_add_vol_32(int32_t *buffer1, const int32_t *buffer2,
 			   pcm_volume_dither() + PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer1++ = pcm_range_64(sample1, 32);
+		*buffer1++ = PcmClamp<int32_t, int64_t, 32>(sample1);
 		--num_samples;
 	}
 }
@@ -160,7 +160,7 @@ pcm_add_8(int8_t *buffer1, const int8_t *buffer2, unsigned num_samples)
 
 		sample1 += sample2;
 
-		*buffer1++ = pcm_range(sample1, 8);
+		*buffer1++ = PcmClamp<int8_t, int32_t, 8>(sample1);
 		--num_samples;
 	}
 }
@@ -174,7 +174,7 @@ pcm_add_16(int16_t *buffer1, const int16_t *buffer2, unsigned num_samples)
 
 		sample1 += sample2;
 
-		*buffer1++ = pcm_range(sample1, 16);
+		*buffer1++ = PcmClamp<int16_t, int32_t, 16>(sample1);
 		--num_samples;
 	}
 }
@@ -188,7 +188,7 @@ pcm_add_24(int32_t *buffer1, const int32_t *buffer2, unsigned num_samples)
 
 		sample1 += sample2;
 
-		*buffer1++ = pcm_range(sample1, 24);
+		*buffer1++ = PcmClamp<int32_t, int64_t, 24>(sample1);
 		--num_samples;
 	}
 }
@@ -202,7 +202,7 @@ pcm_add_32(int32_t *buffer1, const int32_t *buffer2, unsigned num_samples)
 
 		sample1 += sample2;
 
-		*buffer1++ = pcm_range_64(sample1, 32);
+		*buffer1++ = PcmClamp<int32_t, int64_t, 32>(sample1);
 		--num_samples;
 	}
 }
diff --git a/src/PcmUtils.hxx b/src/PcmUtils.hxx
index 7c7173d8c..d77c4194a 100644
--- a/src/PcmUtils.hxx
+++ b/src/PcmUtils.hxx
@@ -42,30 +42,6 @@ pcm_end_pointer(const T *p, size_t size)
  * Check if the value is within the range of the provided bit size,
  * and caps it if necessary.
  */
-static inline int32_t
-pcm_range(int32_t sample, unsigned bits)
-{
-	if (gcc_unlikely(sample < (-1 << (bits - 1))))
-		return -1 << (bits - 1);
-	if (gcc_unlikely(sample >= (1 << (bits - 1))))
-		return (1 << (bits - 1)) - 1;
-	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 (gcc_unlikely(sample < ((int64_t)-1 << (bits - 1))))
-		return (int64_t)-1 << (bits - 1);
-	if (gcc_unlikely(sample >= ((int64_t)1 << (bits - 1))))
-		return ((int64_t)1 << (bits - 1)) - 1;
-	return sample;
-}
-
 template<typename T, typename U, unsigned bits>
 gcc_const
 static inline T
diff --git a/src/PcmVolume.cxx b/src/PcmVolume.cxx
index e19469f4a..556ab9925 100644
--- a/src/PcmVolume.cxx
+++ b/src/PcmVolume.cxx
@@ -40,7 +40,7 @@ pcm_volume_change_8(int8_t *buffer, const int8_t *end, int volume)
 			  PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer++ = pcm_range(sample, 8);
+		*buffer++ = PcmClamp<int8_t, int16_t, 8>(sample);
 	}
 }
 
@@ -54,7 +54,7 @@ pcm_volume_change_16(int16_t *buffer, const int16_t *end, int volume)
 			  PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 
-		*buffer++ = pcm_range(sample, 16);
+		*buffer++ = PcmClamp<int16_t, int32_t, 16>(sample);
 	}
 }
 
@@ -107,7 +107,7 @@ pcm_volume_change_24(int32_t *buffer, const int32_t *end, int volume)
 			  PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
 #endif
-		*buffer++ = pcm_range(sample, 24);
+		*buffer++ = PcmClamp<int32_t, int32_t, 24>(sample);
 	}
 }
 
@@ -127,7 +127,7 @@ pcm_volume_change_32(int32_t *buffer, const int32_t *end, int volume)
 		sample = (sample * volume + pcm_volume_dither() +
 			  PCM_VOLUME_1 / 2)
 			/ PCM_VOLUME_1;
-		*buffer++ = pcm_range_64(sample, 32);
+		*buffer++ = PcmClamp<int32_t, int64_t, 32>(sample);
 #endif
 	}
 }
-- 
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