From 24d6535b7ae5cad7b5b460a5fe3ee9da70ad54dc Mon Sep 17 00:00:00 2001
From: Dave Bryant <bryant@rockbox.org>
Date: Mon, 27 Jun 2005 00:12:40 +0000
Subject: Allow WavPack to use new sampling rate converter

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6888 a1c6a512-1295-4272-9138-f99709370657
---
 apps/codecs/wavpack.c |  9 +++++----
 apps/metadata.c       | 13 +++++++++++--
 2 files changed, 16 insertions(+), 6 deletions(-)

diff --git a/apps/codecs/wavpack.c b/apps/codecs/wavpack.c
index 275f5f11e4..0da8a89027 100644
--- a/apps/codecs/wavpack.c
+++ b/apps/codecs/wavpack.c
@@ -47,7 +47,7 @@ enum codec_status codec_start(struct codec_api* api)
 {
     WavpackContext *wpc;
     char error [80];
-    int bps, nchans;
+    int bps, nchans, sr_100;
 
     /* Generic codec initialisation */
     TEST_CODEC_API(api);
@@ -90,6 +90,7 @@ enum codec_status codec_start(struct codec_api* api)
 
     bps = WavpackGetBytesPerSample (wpc);
     nchans = WavpackGetReducedChannels (wpc);
+    sr_100 = ci->id3->frequency / 100;
 
     ci->set_elapsed (0);
 
@@ -99,7 +100,7 @@ enum codec_status codec_start(struct codec_api* api)
         long nsamples;  
 
         if (ci->seek_time && ci->taginfo_ready && ci->id3->length) {
-            int curpos_ms = (WavpackGetSampleIndex (wpc) + 220) / 441 * 10;
+            int curpos_ms = WavpackGetSampleIndex (wpc) / sr_100 * 10;
             int n, d, skip;
 
             if (ci->seek_time > curpos_ms) {
@@ -121,7 +122,7 @@ enum codec_status codec_start(struct codec_api* api)
             if (!wpc)
                 break;
 
-            ci->set_elapsed ((int)((long long) WavpackGetSampleIndex (wpc) * 1000 / 44100));
+            ci->set_elapsed (WavpackGetSampleIndex (wpc) / sr_100 * 10);
             rb->yield ();
         }
 
@@ -189,7 +190,7 @@ enum codec_status codec_start(struct codec_api* api)
         while (!ci->audiobuffer_insert ((char *) temp_buffer, nsamples * 4))
             rb->yield ();
 
-        ci->set_elapsed ((WavpackGetSampleIndex (wpc) + 220) / 441 * 10);
+        ci->set_elapsed (WavpackGetSampleIndex (wpc) / sr_100 * 10);
     }
 
     if (ci->request_next_track())
diff --git a/apps/metadata.c b/apps/metadata.c
index 540e62c4aa..f59917ceb8 100644
--- a/apps/metadata.c
+++ b/apps/metadata.c
@@ -83,6 +83,9 @@ unsigned short a52_441framesizes[]=
        557*2,558*2,696*2,697*2,835*2,836*2,975*2,976*2,
        1114*2,1115*2,1253*2,1254*2,1393*2,1394*2};
 
+const long wavpack_sample_rates [] = { 6000, 8000, 9600, 11025, 12000, 16000,
+    22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000 };
+
 /* Get metadata for track - return false if parsing showed problems with the
    file that would prevent playback. */
 
@@ -334,12 +337,18 @@ bool get_metadata(struct track_info* track, int fd, const char* trackname,
 
       track->id3.vbr = true;   /* All WavPack files are VBR */
       track->id3.filesize = filesize (fd);
-      track->id3.frequency = 44100;
 
       if ((buf [20] | buf [21] | buf [22] | buf [23]) &&
           (buf [12] & buf [13] & buf [14] & buf [15]) != 0xff) {
+              int srindx = ((buf [26] >> 7) & 1) + ((buf [27] << 1) & 14);
+
+              if (srindx == 15)
+                  track->id3.frequency = 44100;
+              else
+                  track->id3.frequency = wavpack_sample_rates [srindx];
+
               totalsamples = (buf[15] << 24) | (buf[14] << 16) | (buf[13] << 8) | buf[12];
-              track->id3.length = (totalsamples + 220) / 441 * 10;
+              track->id3.length = totalsamples / (track->id3.frequency / 100) * 10;
               track->id3.bitrate = filesize (fd) /
                   (track->id3.length / 8);
       }
-- 
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