Very minor changes to remove compiler warnings (tested with gcc-3.4.2 under Linux)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5958 a1c6a512-1295-4272-9138-f99709370657

4 files changed, 14 insertions, 7 deletions

diff --git a/apps/codecs/libmad/decoder.c b/apps/codecs/libmad/decoder.c
index efa95e31c8..f484e36569 100644
--- a/apps/codecs/libmad/decoder.c
+++ b/apps/codecs/libmad/decoder.c
@@ -119,6 +119,9 @@ int mad_decoder_finish(struct mad_decoder *decoder)
 
     return (!WIFEXITED(status) || WEXITSTATUS(status)) ? -1 : 0;
   }
+# else
+  /* Avoid compiler warning */
+  (void)decoder;
 # endif
 
   return 0;
@@ -577,6 +580,10 @@ int mad_decoder_message(struct mad_decoder *decoder,
 
   return 0;
 # else
+  /* Avoid compiler warnings */
+  (void)decoder;
+  (void)message;
+  (void)len;
   return -1;
 # endif
 }
diff --git a/apps/codecs/libmad/frame.c b/apps/codecs/libmad/frame.c
index 4b592d02ef..9a6dca0f0f 100644
--- a/apps/codecs/libmad/frame.c
+++ b/apps/codecs/libmad/frame.c
@@ -315,7 +315,7 @@ int mad_header_decode(struct mad_header *header, struct mad_stream *stream)
     if (!stream->sync)
       ptr = stream->this_frame;
 
-    if (end - ptr < stream->skiplen) {
+    if (end - ptr < (long) stream->skiplen) {
       stream->skiplen   -= end - ptr;
       stream->next_frame = end;
 
@@ -400,7 +400,7 @@ int mad_header_decode(struct mad_header *header, struct mad_stream *stream)
   }
 
   /* verify there is enough data left in buffer to decode this frame */
-  if (N + MAD_BUFFER_GUARD > end - stream->this_frame) {
+  if ((long)(N + MAD_BUFFER_GUARD) > end - stream->this_frame) {
     stream->next_frame = stream->this_frame;
 
     stream->error = MAD_ERROR_BUFLEN;
diff --git a/apps/codecs/libmad/huffman.c b/apps/codecs/libmad/huffman.c
index f4fe61bd04..80bb3ddef1 100644
--- a/apps/codecs/libmad/huffman.c
+++ b/apps/codecs/libmad/huffman.c
@@ -3078,7 +3078,7 @@ struct hufftable const mad_huff_pair_table[32] = {
   /*  1 */ { hufftab1,   0, 3 },
   /*  2 */ { hufftab2,   0, 3 },
   /*  3 */ { hufftab3,   0, 3 },
-  /*  4 */ { 0 /* not used */ },
+  /*  4 */ { hufftab0,   0, 0 }, /* not used */
   /*  5 */ { hufftab5,   0, 3 },
   /*  6 */ { hufftab6,   0, 4 },
   /*  7 */ { hufftab7,   0, 4 },
@@ -3088,7 +3088,7 @@ struct hufftable const mad_huff_pair_table[32] = {
   /* 11 */ { hufftab11,  0, 4 },
   /* 12 */ { hufftab12,  0, 4 },
   /* 13 */ { hufftab13,  0, 4 },
-  /* 14 */ { 0 /* not used */ },
+  /* 14 */ { hufftab0,   0, 0 }, /* not used */
   /* 15 */ { hufftab15,  0, 4 },
   /* 16 */ { hufftab16,  1, 4 },
   /* 17 */ { hufftab16,  2, 4 },
diff --git a/apps/codecs/libmad/layer3.c b/apps/codecs/libmad/layer3.c
index 7a59e70241..df1084eb92 100644
--- a/apps/codecs/libmad/layer3.c
+++ b/apps/codecs/libmad/layer3.c
@@ -894,7 +894,7 @@ mad_fixed_t III_requantize(unsigned int value, signed int exp)
   exp += power->exponent;
 
   if (exp < 0) {
-    if (-exp >= sizeof(mad_fixed_t) * CHAR_BIT) {
+    if (-exp >= (signed int) (sizeof(mad_fixed_t) * CHAR_BIT)) {
       /* underflow */
       requantized = 0;
     }
@@ -1053,7 +1053,7 @@ enum mad_error III_huffdecode(struct mad_bitptr *ptr, mad_fixed_t xr[576],
           break;
 
         case 15:
-          if (cachesz < linbits + 2) {
+          if ((unsigned int)cachesz < linbits + 2) {
             bitcache   = (bitcache << 16) | mad_bit_read(&peek, 16);
             cachesz   += 16;
             bits_left -= 16;
@@ -1088,7 +1088,7 @@ enum mad_error III_huffdecode(struct mad_bitptr *ptr, mad_fixed_t xr[576],
           break;
 
         case 15:
-          if (cachesz < linbits + 1) {
+          if ((unsigned int)cachesz < linbits + 1) {
             bitcache   = (bitcache << 16) | mad_bit_read(&peek, 16);
             cachesz   += 16;
             bits_left -= 16;