From 097444d07cf394919d7eba149dfe81161cd86453 Mon Sep 17 00:00:00 2001
From: Miika Pekkarinen <miipekk@ihme.org>
Date: Sun, 12 Jun 2005 15:14:20 +0000
Subject: [PATCH] Fixed some mp3 metadata reading performance problem. Next
 track switching should be more reliable.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6691 a1c6a512-1295-4272-9138-f99709370657
---
 apps/playback.c         |  4 ++--
 firmware/mp3data.c      | 12 ++++++++++++
 firmware/pcm_playback.c |  2 +-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/apps/playback.c b/apps/playback.c
index 0bd0c27c03..391f5e9537 100644
--- a/apps/playback.c
+++ b/apps/playback.c
@@ -666,7 +666,7 @@ bool audio_load_track(int offset, bool start_play, int peek_offset)
         mp3info(&tracks[track_widx].id3, trackname, v1first);
         lseek(fd, 0, SEEK_SET);
         /* This is too slow to execute on some files. */
-        // get_mp3file_info(fd, &tracks[track_widx].mp3data);
+        get_mp3file_info(fd, &tracks[track_widx].mp3data);
         if (offset) {
             lseek(fd, offset, SEEK_SET);
             tracks[track_widx].id3.offset = offset;
@@ -1272,7 +1272,7 @@ void codec_thread(void)
         case CODEC_LOAD:
             if (status != PLUGIN_OK) {
                 logf("Codec failure");
-                playing = false;
+                // playing = false;
             } else {
                 logf("Codec finished");
             }
diff --git a/firmware/mp3data.c b/firmware/mp3data.c
index 2b58710715..6e553eb94a 100644
--- a/firmware/mp3data.c
+++ b/firmware/mp3data.c
@@ -37,6 +37,11 @@
 #include "file.h"
 #include "buffer.h"
 
+#if defined(IRIVER_H100) && !defined(SIMULATOR)
+#include "pcm_playback.h"
+#include "kernel.h"
+#endif
+
 #define DEBUG_VERBOSE
 
 #define BYTES2INT(b1,b2,b3,b4) (((long)(b1 & 0xFF) << (3*8)) |      \
@@ -259,6 +264,13 @@ static unsigned long __find_next_frame(int fd, long *offset, long max_offset,
 
 static int fileread(int fd, unsigned char *c)
 {
+#if defined(IRIVER_H100) && !defined(SIMULATOR)
+    /* We don't want to eat all cpu power. Maybe better way to do this
+       should be implemented. */
+    while (pcm_is_lowdata())
+        yield();
+#endif
+    
     return read(fd, c, 1);
 }
 
diff --git a/firmware/pcm_playback.c b/firmware/pcm_playback.c
index 2c63f8ccd7..582f04cd72 100644
--- a/firmware/pcm_playback.c
+++ b/firmware/pcm_playback.c
@@ -44,7 +44,7 @@
 /* Must be a power of 2 */
 #define NUM_PCM_BUFFERS      (PCMBUF_SIZE / CHUNK_SIZE)
 #define NUM_PCM_BUFFERS_MASK (NUM_PCM_BUFFERS - 1)
-#define PCM_WATERMARK        (CHUNK_SIZE * 3)
+#define PCM_WATERMARK        (CHUNK_SIZE * 6)
 
 static bool pcm_playing;
 static bool pcm_paused;