pcm_utils: export pcm_range()

We are going to split the pcm_utils.c library, and pcm_range() will be
useful for several sub libraries.

2 files changed, 16 insertions, 14 deletions

diff --git a/src/pcm_utils.c b/src/pcm_utils.c
index b1178c7a2..43690ef89 100644
--- a/src/pcm_utils.c
+++ b/src/pcm_utils.c
@@ -41,20 +41,6 @@ pcm_dither(void)
 	return (r & 511) - ((r >> 9) & 511);
 }
 
-/**
- * Check if the value is within the range of the provided bit size,
- * and caps it if necessary.
- */
-static int32_t
-pcm_range(int32_t sample, unsigned bits)
-{
-	if (G_UNLIKELY(sample < (-1 << (bits - 1))))
-		return -1 << (bits - 1);
-	if (G_UNLIKELY(sample >= (1 << (bits - 1))))
-		return (1 << (bits - 1)) - 1;
-	return sample;
-}
-
 static void
 pcm_volume_change_8(int8_t *buffer, unsigned num_samples, int volume)
 {
diff --git a/src/pcm_utils.h b/src/pcm_utils.h
index 71398c015..44ea5aa16 100644
--- a/src/pcm_utils.h
+++ b/src/pcm_utils.h
@@ -22,6 +22,8 @@
 #include "pcm_resample.h"
 #include "pcm_dither.h"
 
+#include <glib.h>
+
 #include <stdint.h>
 #include <stddef.h>
 
@@ -42,6 +44,20 @@ struct pcm_convert_state {
 };
 
 /**
+ * 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 (G_UNLIKELY(sample < (-1 << (bits - 1))))
+		return -1 << (bits - 1);
+	if (G_UNLIKELY(sample >= (1 << (bits - 1))))
+		return (1 << (bits - 1)) - 1;
+	return sample;
+}
+
+/**
  * Converts a float value (0.0 = silence, 1.0 = 100% volume) to an
  * integer volume value (1000 = 100%).
  */