qom: improve documentation of cast functions

[qemu.git] / audio / mixeng.c

diff --git a/audio/mixeng.c b/audio/mixeng.c
index 9f1d93fcfc3d2ffcbfb18a321713ee9c9b80c638..02a9d9fb92ba3bdc7c3ba587c77c5a48dda4d73d 100644 (file)
--- a/audio/mixeng.c
+++ b/audio/mixeng.c
@@ -33,7 +33,8 @@
 #define ENDIAN_CONVERT(v) (v)
 
 /* Signed 8 bit */
-#define IN_T int8_t
+#define BSIZE 8
+#define ITYPE int
 #define IN_MIN SCHAR_MIN
 #define IN_MAX SCHAR_MAX
 #define SIGNED
@@ -42,25 +43,29 @@
 #undef SIGNED
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 /* Unsigned 8 bit */
-#define IN_T uint8_t
+#define BSIZE 8
+#define ITYPE uint
 #define IN_MIN 0
 #define IN_MAX UCHAR_MAX
 #define SHIFT 8
 #include "mixeng_template.h"
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 #undef ENDIAN_CONVERT
 #undef ENDIAN_CONVERSION
 
 /* Signed 16 bit */
-#define IN_T int16_t
+#define BSIZE 16
+#define ITYPE int
 #define IN_MIN SHRT_MIN
 #define IN_MAX SHRT_MAX
 #define SIGNED
@@ -78,11 +83,13 @@
 #undef SIGNED
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 /* Unsigned 16 bit */
-#define IN_T uint16_t
+#define BSIZE 16
+#define ITYPE uint
 #define IN_MIN 0
 #define IN_MAX USHRT_MAX
 #define SHIFT 16
@@ -98,11 +105,13 @@
 #undef ENDIAN_CONVERSION
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 /* Signed 32 bit */
-#define IN_T int32_t
+#define BSIZE 32
+#define ITYPE int
 #define IN_MIN INT32_MIN
 #define IN_MAX INT32_MAX
 #define SIGNED
@@ -120,11 +129,13 @@
 #undef SIGNED
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 /* Unsigned 32 bit */
-#define IN_T uint32_t
+#define BSIZE 32
+#define ITYPE uint
 #define IN_MIN 0
 #define IN_MAX UINT32_MAX
 #define SHIFT 32
@@ -140,7 +151,8 @@
 #undef ENDIAN_CONVERSION
 #undef IN_MAX
 #undef IN_MIN
-#undef IN_T
+#undef BSIZE
+#undef ITYPE
 #undef SHIFT
 
 t_sample *mixeng_conv[2][2][2][3] = {
@@ -326,10 +338,35 @@ void *st_rate_start (int inrate, int outrate)
 
 void st_rate_stop (void *opaque)
 {
-    qemu_free (opaque);
+    g_free (opaque);
 }
 
 void mixeng_clear (struct st_sample *buf, int len)
 {
     memset (buf, 0, len * sizeof (struct st_sample));
 }
+
+void mixeng_volume (struct st_sample *buf, int len, struct mixeng_volume *vol)
+{
+#ifdef CONFIG_MIXEMU
+    if (vol->mute) {
+        mixeng_clear (buf, len);
+        return;
+    }
+
+    while (len--) {
+#ifdef FLOAT_MIXENG
+        buf->l = buf->l * vol->l;
+        buf->r = buf->r * vol->r;
+#else
+        buf->l = (buf->l * vol->l) >> 32;
+        buf->r = (buf->r * vol->r) >> 32;
+#endif
+        buf += 1;
+    }
+#else
+    (void) buf;
+    (void) len;
+    (void) vol;
+#endif
+}