Changeset 212 for libmpc/branches/r2d/libmpcdec/streaminfo.c

Timestamp:

02/13/07 11:40:24 (17 years ago)

Author:

r2d

Message:

• changed replay gain implementation (using sv8 representation)

File:

• libmpc/branches/r2d/libmpcdec/streaminfo.c (modified) (3 diffs)

libmpc/branches/r2d/libmpcdec/streaminfo.c

@@ -35 +35 @@
 /// Implementation of streaminfo reading functions.
 
+#include <math.h>
 #include <mpc/mpcdec.h>
 #include <mpc/streaminfo.h>
@@ -125 +126 @@
         si->block_pwr          = 0;
 
+        // convert gain info
+        if (si->gain_title != 0) {
+                int tmp = (int)((65. - si->gain_title / 100.) * 256);
+                if (tmp >= (1 << 16) || tmp < 0) tmp = 0;
+                si->gain_title = (mpc_int16_t) tmp;
+        }
+
+        if (si->gain_album != 0) {
+                int tmp = (int)((65. - si->gain_album / 100.) * 256);
+                if (tmp >= (1 << 16) || tmp < 0) tmp = 0;
+                si->gain_album = (mpc_int16_t) tmp;
+        }
+
+        if (si->peak_title != 0)
+                si->peak_title = (mpc_uint16_t) (__builtin_log10(si->peak_title) * 20 * 256);
+
+        if (si->peak_album != 0)
+                si->peak_album = (mpc_uint16_t) (__builtin_log10(si->peak_album) * 20 * 256);
+
         mpc_get_encoder_string(si);
 
@@ -146 +166 @@
 
         mpc_bits_read(&r, 8); // gain version
-        // FIXME : add gain conversion
         si->gain_title         = (mpc_uint16_t) mpc_bits_read(&r, 16);
         si->peak_title         = (mpc_uint16_t) mpc_bits_read(&r, 16);