revamp ogg flac file decoder; it needed to be derived from the ogg flac stream encoder instead of the flac file encoder
diff --git a/include/OggFLAC++/decoder.h b/include/OggFLAC++/decoder.h
index 8fd0b27..89fafb9 100644
--- a/include/OggFLAC++/decoder.h
+++ b/include/OggFLAC++/decoder.h
@@ -310,7 +310,7 @@
 			bool set_metadata_ignore_all();
 
 			State get_state() const;
-			FLAC::Decoder::File::State get_FLAC_file_decoder_state() const;
+			OggFLAC::Decoder::SeekableStream::State get_seekable_stream_decoder_state() const;
 			FLAC::Decoder::SeekableStream::State get_FLAC_seekable_stream_decoder_state() const;
 			FLAC::Decoder::Stream::State get_FLAC_stream_decoder_state() const;
 			bool get_md5_checking() const;
diff --git a/include/OggFLAC/file_decoder.h b/include/OggFLAC/file_decoder.h
index a96d0b4..5a5a209 100644
--- a/include/OggFLAC/file_decoder.h
+++ b/include/OggFLAC/file_decoder.h
@@ -34,7 +34,7 @@
 
 #include "export.h"
 
-#include "FLAC/file_decoder.h"
+#include "seekable_stream_decoder.h"
 
 #ifdef __cplusplus
 extern "C" {
@@ -80,12 +80,15 @@
 	OggFLAC__FILE_DECODER_END_OF_FILE,
 	/**< The decoder has reached the end of the file. */
 
-	OggFLAC__FILE_DECODER_OGG_ERROR,
-	/**< An error occurred in the underlying Ogg layer.  */
+	OggFLAC__FILE_DECODER_ERROR_OPENING_FILE,
+	/**< An error occurred opening the input file. */
 
-	OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR,
-	/**< An error occurred in the underlying FLAC file decoder;
-	 * check OggFLAC__file_decoder_get_FLAC_file_decoder_state().
+	OggFLAC__FILE_DECODER_SEEK_ERROR,
+	/**< An error occurred while seeking. */
+
+	OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR,
+	/**< An error occurred in the underlying seekable stream decoder;
+	 * check OggFLAC__file_decoder_get_seekable_stream_decoder_state().
 	 */
 
 	OggFLAC__FILE_DECODER_INVALID_CALLBACK,
@@ -406,22 +409,23 @@
  */
 OggFLAC_API OggFLAC__FileDecoderState OggFLAC__file_decoder_get_state(const OggFLAC__FileDecoder *decoder);
 
-/** Get the state of the underlying FLAC file decoder.
+/** Get the state of the underlying seekable stream decoder.
  *  Useful when the file decoder state is
- *  \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR.
+ *  \c OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR.
  *
  * \param  decoder  A decoder instance to query.
  * \assert
  *    \code decoder != NULL \endcode
  * \retval FLAC__FileDecoderState
- *    The FLAC file decoder state.
+ *    The seekable stream decoder state.
  */
-OggFLAC_API FLAC__FileDecoderState OggFLAC__file_decoder_get_FLAC_file_decoder_state(const OggFLAC__FileDecoder *decoder);
+OggFLAC_API OggFLAC__SeekableStreamDecoderState OggFLAC__file_decoder_get_seekable_stream_decoder_state(const OggFLAC__FileDecoder *decoder);
 
-/** Get the state of the underlying FLAC file decoder's seekable stream decoder.
+/** Get the state of the underlying FLAC seekable stream decoder.
  *  Useful when the file decoder state is
- *  \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR and the FLAC file decoder state is
- *  \c FLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR.
+ *  \c OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR
+ *  and the seekable stream decoder state is
+ *  \c OggFLAC__SEEKABLE_STREAM_DECODER_FLAC_SEEKABLE_STREAM_DECODER_ERROR.
  *
  * \param  decoder  A decoder instance to query.
  * \assert
@@ -431,11 +435,13 @@
  */
 OggFLAC_API FLAC__SeekableStreamDecoderState OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state(const OggFLAC__FileDecoder *decoder);
 
-/** Get the state of the underlying FLAC file decoder's stream decoder.
+/** Get the state of the underlying FLAC stream decoder.
  *  Useful when the file decoder state is
- *  \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR and the FLAC file decoder state is
- *  \c FLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR and the
- *  FLAC seekable stream decoder state is \c FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR.
+ *  \c OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR
+ *  and the seekable stream decoder state is
+ *  \c OggFLAC__SEEKABLE_STREAM_DECODER_FLAC_SEEKABLE_STREAM_DECODER_ERROR
+ *  and the *  FLAC seekable stream decoder state is
+ *  \c FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR.
  *
  * \param  decoder  A decoder instance to query.
  * \assert
@@ -447,8 +453,8 @@
 
 /** Get the current decoder state as a C string.
  *  This version automatically resolves
- *  \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR
- *  by getting the FLAC file decoder's state.
+ *  \c OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR
+ *  by getting the seekable stream decoder's state.
  *
  * \param  decoder  A decoder instance to query.
  * \assert
diff --git a/src/libOggFLAC++/file_decoder.cpp b/src/libOggFLAC++/file_decoder.cpp
index 19e1b5f..96d38ed 100644
--- a/src/libOggFLAC++/file_decoder.cpp
+++ b/src/libOggFLAC++/file_decoder.cpp
@@ -117,10 +117,10 @@
 			return State(::OggFLAC__file_decoder_get_state(decoder_));
 		}
 
-		FLAC::Decoder::File::State File::get_FLAC_file_decoder_state() const
+		OggFLAC::Decoder::SeekableStream::State File::get_seekable_stream_decoder_state() const
 		{
 			FLAC__ASSERT(is_valid());
-			return FLAC::Decoder::File::State(::OggFLAC__file_decoder_get_FLAC_file_decoder_state(decoder_));
+			return OggFLAC::Decoder::SeekableStream::State(::OggFLAC__file_decoder_get_seekable_stream_decoder_state(decoder_));
 		}
 
 		FLAC::Decoder::SeekableStream::State File::get_FLAC_seekable_stream_decoder_state() const
diff --git a/src/libOggFLAC/file_decoder.c b/src/libOggFLAC/file_decoder.c
index 71c4f52..c1dd225 100644
--- a/src/libOggFLAC/file_decoder.c
+++ b/src/libOggFLAC/file_decoder.c
@@ -29,9 +29,20 @@
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <stdlib.h> /* for calloc() */
+#include <stdio.h>
+#include <stdlib.h> /* for malloc() */
+#include <string.h> /* for strcmp() */
+#include <sys/stat.h> /* for stat() */
+#if defined _MSC_VER || defined __MINGW32__
+#include <io.h> /* for _setmode() */
+#include <fcntl.h> /* for _O_BINARY */
+#elif defined __CYGWIN__
+#include <io.h> /* for setmode(), O_BINARY */
+#include <fcntl.h> /* for _O_BINARY */
+#endif
 #include "FLAC/assert.h"
 #include "protected/file_decoder.h"
+#include "protected/seekable_stream_decoder.h"
 
 /***********************************************************************
  *
@@ -40,10 +51,15 @@
  ***********************************************************************/
 
 static void set_defaults_(OggFLAC__FileDecoder *decoder);
-static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
-static void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
-static void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
-
+static FILE *get_binary_stdin_();
+static FLAC__SeekableStreamDecoderReadStatus read_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
+static FLAC__SeekableStreamDecoderSeekStatus seek_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
+static FLAC__SeekableStreamDecoderTellStatus tell_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
+static FLAC__SeekableStreamDecoderLengthStatus length_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);
+static FLAC__bool eof_callback_(const OggFLAC__SeekableStreamDecoder *decoder, void *client_data);
+static FLAC__StreamDecoderWriteStatus write_callback_(const OggFLAC__SeekableStreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
+static void metadata_callback_(const OggFLAC__SeekableStreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
+static void error_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
 
 /***********************************************************************
  *
@@ -56,7 +72,9 @@
 	OggFLAC__FileDecoderMetadataCallback metadata_callback;
 	OggFLAC__FileDecoderErrorCallback error_callback;
 	void *client_data;
-	FLAC__FileDecoder *FLAC_file_decoder;
+	FILE *file;
+	char *filename; /* == NULL if stdin */
+	OggFLAC__SeekableStreamDecoder *seekable_stream_decoder;
 } OggFLAC__FileDecoderPrivate;
 
 /***********************************************************************
@@ -68,24 +86,27 @@
 OggFLAC_API const char * const OggFLAC__FileDecoderStateString[] = {
 	"OggFLAC__FILE_DECODER_OK",
 	"OggFLAC__FILE_DECODER_END_OF_FILE",
-	"OggFLAC__FILE_DECODER_OGG_ERROR",
-	"OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR",
+	"OggFLAC__FILE_DECODER_ERROR_OPENING_FILE",
+	"OggFLAC__FILE_DECODER_SEEK_ERROR",
+	"OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR",
 	"OggFLAC__FILE_DECODER_INVALID_CALLBACK",
 	"OggFLAC__FILE_DECODER_MEMORY_ALLOCATION_ERROR",
 	"OggFLAC__FILE_DECODER_ALREADY_INITIALIZED",
 	"OggFLAC__FILE_DECODER_UNINITIALIZED"
 };
 
-
 /***********************************************************************
  *
  * Class constructor/destructor
  *
  ***********************************************************************/
+
 OggFLAC_API OggFLAC__FileDecoder *OggFLAC__file_decoder_new()
 {
 	OggFLAC__FileDecoder *decoder;
 
+	FLAC__ASSERT(sizeof(int) >= 4); /* we want to die right away if this is not true */
+
 	decoder = (OggFLAC__FileDecoder*)calloc(1, sizeof(OggFLAC__FileDecoder));
 	if(decoder == 0) {
 		return 0;
@@ -104,14 +125,16 @@
 		return 0;
 	}
 
-	decoder->private_->FLAC_file_decoder = FLAC__file_decoder_new();
-	if(0 == decoder->private_->FLAC_file_decoder) {
+	decoder->private_->seekable_stream_decoder = OggFLAC__seekable_stream_decoder_new();
+	if(0 == decoder->private_->seekable_stream_decoder) {
 		free(decoder->private_);
 		free(decoder->protected_);
 		free(decoder);
 		return 0;
 	}
 
+	decoder->private_->file = 0;
+
 	set_defaults_(decoder);
 
 	decoder->protected_->state = OggFLAC__FILE_DECODER_UNINITIALIZED;
@@ -124,11 +147,11 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->protected_);
 	FLAC__ASSERT(0 != decoder->private_);
-	FLAC__ASSERT(0 != decoder->private_->FLAC_file_decoder);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 
-	OggFLAC__file_decoder_finish(decoder);
+	(void)OggFLAC__file_decoder_finish(decoder);
 
-	FLAC__file_decoder_delete(decoder->private_->FLAC_file_decoder);
+	OggFLAC__seekable_stream_decoder_delete(decoder->private_->seekable_stream_decoder);
 
 	free(decoder->private_);
 	free(decoder->protected_);
@@ -151,42 +174,54 @@
 	if(0 == decoder->private_->write_callback || 0 == decoder->private_->metadata_callback || 0 == decoder->private_->error_callback)
 		return decoder->protected_->state = OggFLAC__FILE_DECODER_INVALID_CALLBACK;
 
-	if(!OggFLAC__ogg_decoder_aspect_init(&decoder->protected_->ogg_decoder_aspect))
-		return decoder->protected_->state = OggFLAC__FILE_DECODER_OGG_ERROR;
+	if(0 == decoder->private_->filename)
+		decoder->private_->file = get_binary_stdin_();
+	else
+		decoder->private_->file = fopen(decoder->private_->filename, "rb");
 
-	FLAC__file_decoder_set_write_callback(decoder->private_->FLAC_file_decoder, write_callback_);
-	FLAC__file_decoder_set_metadata_callback(decoder->private_->FLAC_file_decoder, metadata_callback_);
-	FLAC__file_decoder_set_error_callback(decoder->private_->FLAC_file_decoder, error_callback_);
-	FLAC__file_decoder_set_client_data(decoder->private_->FLAC_file_decoder, decoder);
+	if(decoder->private_->file == 0)
+		return decoder->protected_->state = OggFLAC__FILE_DECODER_ERROR_OPENING_FILE;
 
-	if(FLAC__file_decoder_init(decoder->private_->FLAC_file_decoder) != FLAC__FILE_DECODER_OK)
-		return decoder->protected_->state = OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR;
+	OggFLAC__seekable_stream_decoder_set_read_callback(decoder->private_->seekable_stream_decoder, read_callback_);
+	OggFLAC__seekable_stream_decoder_set_seek_callback(decoder->private_->seekable_stream_decoder, seek_callback_);
+	OggFLAC__seekable_stream_decoder_set_tell_callback(decoder->private_->seekable_stream_decoder, tell_callback_);
+	OggFLAC__seekable_stream_decoder_set_length_callback(decoder->private_->seekable_stream_decoder, length_callback_);
+	OggFLAC__seekable_stream_decoder_set_eof_callback(decoder->private_->seekable_stream_decoder, eof_callback_);
+	OggFLAC__seekable_stream_decoder_set_write_callback(decoder->private_->seekable_stream_decoder, write_callback_);
+	OggFLAC__seekable_stream_decoder_set_metadata_callback(decoder->private_->seekable_stream_decoder, metadata_callback_);
+	OggFLAC__seekable_stream_decoder_set_error_callback(decoder->private_->seekable_stream_decoder, error_callback_);
+	OggFLAC__seekable_stream_decoder_set_client_data(decoder->private_->seekable_stream_decoder, decoder);
+
+	if(OggFLAC__seekable_stream_decoder_init(decoder->private_->seekable_stream_decoder) != OggFLAC__SEEKABLE_STREAM_DECODER_OK)
+		return decoder->protected_->state = OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR;
 
 	return decoder->protected_->state = OggFLAC__FILE_DECODER_OK;
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_finish(OggFLAC__FileDecoder *decoder)
 {
-	FLAC__bool ok;
-
 	FLAC__ASSERT(0 != decoder);
-	FLAC__ASSERT(0 != decoder->private_);
-	FLAC__ASSERT(0 != decoder->protected_);
 
 	if(decoder->protected_->state == OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return true;
 
-	FLAC__ASSERT(0 != decoder->private_->FLAC_file_decoder);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 
-	ok = FLAC__file_decoder_finish(decoder->private_->FLAC_file_decoder);
+	if(0 != decoder->private_->file && decoder->private_->file != stdin) {
+		fclose(decoder->private_->file);
+		decoder->private_->file = 0;
+	}
 
-	OggFLAC__ogg_decoder_aspect_finish(&decoder->protected_->ogg_decoder_aspect);
+	if(0 != decoder->private_->filename) {
+		free(decoder->private_->filename);
+		decoder->private_->filename = 0;
+	}
 
 	set_defaults_(decoder);
 
 	decoder->protected_->state = OggFLAC__FILE_DECODER_UNINITIALIZED;
 
-	return ok;
+	return OggFLAC__seekable_stream_decoder_finish(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_md5_checking(OggFLAC__FileDecoder *decoder, FLAC__bool value)
@@ -194,9 +229,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_md5_checking(decoder->private_->FLAC_file_decoder, value);
+	return OggFLAC__seekable_stream_decoder_set_md5_checking(decoder->private_->seekable_stream_decoder, value);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_filename(OggFLAC__FileDecoder *decoder, const char *value)
@@ -204,9 +240,21 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != value);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_filename(decoder->private_->FLAC_file_decoder, value);
+	if(0 != decoder->private_->filename) {
+		free(decoder->private_->filename);
+		decoder->private_->filename = 0;
+	}
+	if(0 != strcmp(value, "-")) {
+		if(0 == (decoder->private_->filename = (char*)malloc(strlen(value)+1))) {
+			decoder->protected_->state = OggFLAC__FILE_DECODER_MEMORY_ALLOCATION_ERROR;
+			return false;
+		}
+		strcpy(decoder->private_->filename, value);
+	}
+	return true;
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_write_callback(OggFLAC__FileDecoder *decoder, OggFLAC__FileDecoderWriteCallback value)
@@ -260,7 +308,7 @@
 	FLAC__ASSERT(0 != decoder->protected_);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	OggFLAC__ogg_decoder_aspect_set_serial_number(&decoder->protected_->ogg_decoder_aspect, value);
+	OggFLAC__seekable_stream_decoder_set_serial_number(&decoder->private_->seekable_stream_decoder, value);
 	return true;
 }
 
@@ -269,9 +317,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_respond(decoder->private_->FLAC_file_decoder, type);
+	return OggFLAC__seekable_stream_decoder_set_metadata_respond(decoder->private_->seekable_stream_decoder, type);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_respond_application(OggFLAC__FileDecoder *decoder, const FLAC__byte id[4])
@@ -279,9 +328,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_respond_application(decoder->private_->FLAC_file_decoder, id);
+	return OggFLAC__seekable_stream_decoder_set_metadata_respond_application(decoder->private_->seekable_stream_decoder, id);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_respond_all(OggFLAC__FileDecoder *decoder)
@@ -289,9 +339,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_respond_all(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_set_metadata_respond_all(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore(OggFLAC__FileDecoder *decoder, FLAC__MetadataType type)
@@ -299,9 +350,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_ignore(decoder->private_->FLAC_file_decoder, type);
+	return OggFLAC__seekable_stream_decoder_set_metadata_ignore(decoder->private_->seekable_stream_decoder, type);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore_application(OggFLAC__FileDecoder *decoder, const FLAC__byte id[4])
@@ -309,9 +361,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_ignore_application(decoder->private_->FLAC_file_decoder, id);
+	return OggFLAC__seekable_stream_decoder_set_metadata_ignore_application(decoder->private_->seekable_stream_decoder, id);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore_all(OggFLAC__FileDecoder *decoder)
@@ -319,9 +372,10 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
 	FLAC__ASSERT(0 != decoder->protected_);
+	FLAC__ASSERT(0 != decoder->private_->seekable_stream_decoder);
 	if(decoder->protected_->state != OggFLAC__FILE_DECODER_UNINITIALIZED)
 		return false;
-	return FLAC__file_decoder_set_metadata_ignore_all(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_set_metadata_ignore_all(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API OggFLAC__FileDecoderState OggFLAC__file_decoder_get_state(const OggFLAC__FileDecoder *decoder)
@@ -331,82 +385,82 @@
 	return decoder->protected_->state;
 }
 
-OggFLAC_API FLAC__FileDecoderState OggFLAC__file_decoder_get_FLAC_file_decoder_state(const OggFLAC__FileDecoder *decoder)
+OggFLAC_API OggFLAC__SeekableStreamDecoderState OggFLAC__file_decoder_get_seekable_stream_decoder_state(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_state(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_state(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__SeekableStreamDecoderState OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_seekable_stream_decoder_state(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_FLAC_seekable_stream_decoder_state(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__StreamDecoderState OggFLAC__file_decoder_get_FLAC_stream_decoder_state(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_stream_decoder_state(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_FLAC_stream_decoder_state(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API const char *OggFLAC__file_decoder_get_resolved_state_string(const OggFLAC__FileDecoder *decoder)
 {
-	if(decoder->protected_->state != OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR)
+	if(decoder->protected_->state != OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR)
 		return OggFLAC__FileDecoderStateString[decoder->protected_->state];
 	else
-		return FLAC__file_decoder_get_resolved_state_string(decoder->private_->FLAC_file_decoder);
+		return OggFLAC__seekable_stream_decoder_get_resolved_state_string(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_get_md5_checking(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_md5_checking(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_md5_checking(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API unsigned OggFLAC__file_decoder_get_channels(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_channels(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_channels(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__ChannelAssignment OggFLAC__file_decoder_get_channel_assignment(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_channel_assignment(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_channel_assignment(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API unsigned OggFLAC__file_decoder_get_bits_per_sample(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_bits_per_sample(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_bits_per_sample(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API unsigned OggFLAC__file_decoder_get_sample_rate(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_sample_rate(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_sample_rate(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API unsigned OggFLAC__file_decoder_get_blocksize(const OggFLAC__FileDecoder *decoder)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_blocksize(decoder->private_->FLAC_file_decoder);
+	return OggFLAC__seekable_stream_decoder_get_blocksize(decoder->private_->seekable_stream_decoder);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_get_decode_position(const OggFLAC__FileDecoder *decoder, FLAC__uint64 *position)
 {
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(0 != decoder->private_);
-	return FLAC__file_decoder_get_decode_position(decoder->private_->FLAC_file_decoder, position);
+	return OggFLAC__seekable_stream_decoder_get_decode_position(decoder->private_->seekable_stream_decoder, position);
 }
 
 OggFLAC_API FLAC__bool OggFLAC__file_decoder_process_single(OggFLAC__FileDecoder *decoder)
@@ -414,7 +468,7 @@
 	FLAC__bool ret;
 	FLAC__ASSERT(0 != decoder);
 
-	if(FLAC__file_decoder_get_state(decoder->private_->FLAC_file_decoder) == FLAC__FILE_DECODER_END_OF_FILE)
+	if(decoder->private_->seekable_stream_decoder->protected_->state == OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM)
 		decoder->protected_->state = OggFLAC__FILE_DECODER_END_OF_FILE;
 
 	if(decoder->protected_->state == OggFLAC__FILE_DECODER_END_OF_FILE)
@@ -422,9 +476,9 @@
 
 	FLAC__ASSERT(decoder->protected_->state == OggFLAC__FILE_DECODER_OK);
 
-	ret = FLAC__file_decoder_process_single(decoder->private_->FLAC_file_decoder);
+	ret = OggFLAC__seekable_stream_decoder_process_single(decoder->private_->seekable_stream_decoder);
 	if(!ret)
-		decoder->protected_->state = OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR;
+		decoder->protected_->state = OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR;
 
 	return ret;
 }
@@ -434,7 +488,7 @@
 	FLAC__bool ret;
 	FLAC__ASSERT(0 != decoder);
 
-	if(FLAC__file_decoder_get_state(decoder->private_->FLAC_file_decoder) == FLAC__FILE_DECODER_END_OF_FILE)
+	if(decoder->private_->seekable_stream_decoder->protected_->state == OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM)
 		decoder->protected_->state = OggFLAC__FILE_DECODER_END_OF_FILE;
 
 	if(decoder->protected_->state == OggFLAC__FILE_DECODER_END_OF_FILE)
@@ -442,9 +496,9 @@
 
 	FLAC__ASSERT(decoder->protected_->state == OggFLAC__FILE_DECODER_OK);
 
-	ret = FLAC__file_decoder_process_until_end_of_metadata(decoder->private_->FLAC_file_decoder);
+	ret = OggFLAC__seekable_stream_decoder_process_until_end_of_metadata(decoder->private_->seekable_stream_decoder);
 	if(!ret)
-		decoder->protected_->state = OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR;
+		decoder->protected_->state = OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR;
 
 	return ret;
 }
@@ -454,7 +508,7 @@
 	FLAC__bool ret;
 	FLAC__ASSERT(0 != decoder);
 
-	if(FLAC__file_decoder_get_state(decoder->private_->FLAC_file_decoder) == FLAC__FILE_DECODER_END_OF_FILE)
+	if(decoder->private_->seekable_stream_decoder->protected_->state == OggFLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM)
 		decoder->protected_->state = OggFLAC__FILE_DECODER_END_OF_FILE;
 
 	if(decoder->protected_->state == OggFLAC__FILE_DECODER_END_OF_FILE)
@@ -462,9 +516,9 @@
 
 	FLAC__ASSERT(decoder->protected_->state == OggFLAC__FILE_DECODER_OK);
 
-	ret = FLAC__file_decoder_process_until_end_of_file(decoder->private_->FLAC_file_decoder);
+	ret = OggFLAC__seekable_stream_decoder_process_until_end_of_stream(decoder->private_->seekable_stream_decoder);
 	if(!ret)
-		decoder->protected_->state = OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR;
+		decoder->protected_->state = OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR;
 
 	return ret;
 }
@@ -474,8 +528,13 @@
 	FLAC__ASSERT(0 != decoder);
 	FLAC__ASSERT(decoder->protected_->state == OggFLAC__FILE_DECODER_OK || decoder->protected_->state == OggFLAC__FILE_DECODER_END_OF_FILE);
 
-	if(!FLAC__file_decoder_seek_absolute(decoder->private_->FLAC_file_decoder, sample)) {
-		decoder->protected_->state = OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR;
+	if(decoder->private_->filename == 0) { /* means the file is stdin... */
+		decoder->protected_->state = OggFLAC__FILE_DECODER_SEEK_ERROR;
+		return false;
+	}
+
+	if(!OggFLAC__seekable_stream_decoder_seek_absolute(decoder->private_->seekable_stream_decoder, sample)) {
+		decoder->protected_->state = OggFLAC__FILE_DECODER_SEEK_ERROR;
 		return false;
 	}
 	else {
@@ -493,30 +552,120 @@
 
 void set_defaults_(OggFLAC__FileDecoder *decoder)
 {
+	FLAC__ASSERT(0 != decoder);
+	FLAC__ASSERT(0 != decoder->private_);
+
+	decoder->private_->filename = 0;
 	decoder->private_->write_callback = 0;
 	decoder->private_->metadata_callback = 0;
 	decoder->private_->error_callback = 0;
 	decoder->private_->client_data = 0;
-	OggFLAC__ogg_decoder_aspect_set_defaults(&decoder->protected_->ogg_decoder_aspect);
 }
 
-FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *unused, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+/*
+ * This will forcibly set stdin to binary mode (for OSes that require it)
+ */
+FILE *get_binary_stdin_()
 {
-	OggFLAC__FileDecoder *decoder = (OggFLAC__FileDecoder*)client_data;
-	(void)unused;
-	return decoder->private_->write_callback(decoder, frame, buffer, decoder->private_->client_data);
+	/* if something breaks here it is probably due to the presence or
+	 * absence of an underscore before the identifiers 'setmode',
+	 * 'fileno', and/or 'O_BINARY'; check your system header files.
+	 */
+#if defined _MSC_VER || defined __MINGW32__
+	_setmode(_fileno(stdin), _O_BINARY);
+#elif defined __CYGWIN__
+	/* almost certainly not needed for any modern Cygwin, but let's be safe... */
+	setmode(_fileno(stdin), _O_BINARY);
+#endif
+
+	return stdin;
 }
 
-void metadata_callback_(const FLAC__FileDecoder *unused, const FLAC__StreamMetadata *metadata, void *client_data)
+FLAC__SeekableStreamDecoderReadStatus read_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
 {
-	OggFLAC__FileDecoder *decoder = (OggFLAC__FileDecoder*)client_data;
-	(void)unused;
-	decoder->private_->metadata_callback(decoder, metadata, decoder->private_->client_data);
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	if(*bytes > 0) {
+		*bytes = (unsigned)fread(buffer, sizeof(FLAC__byte), *bytes, file_decoder->private_->file);
+		if(ferror(file_decoder->private_->file)) {
+			return FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR;
+		}
+		else {
+			return FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK;
+		}
+	}
+	else
+		return FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR; /* abort to avoid a deadlock */
 }
 
-void error_callback_(const FLAC__FileDecoder *unused, FLAC__StreamDecoderErrorStatus status, void *client_data)
+FLAC__SeekableStreamDecoderSeekStatus seek_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data)
 {
-	OggFLAC__FileDecoder *decoder = (OggFLAC__FileDecoder*)client_data;
-	(void)unused;
-	decoder->private_->error_callback(decoder, status, decoder->private_->client_data);
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	if(fseek(file_decoder->private_->file, (long)absolute_byte_offset, SEEK_SET) < 0)
+		return FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR;
+	else
+		return FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK;
+}
+
+FLAC__SeekableStreamDecoderTellStatus tell_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	long pos;
+	(void)decoder;
+
+	if((pos = ftell(file_decoder->private_->file)) < 0)
+		return FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR;
+	else {
+		*absolute_byte_offset = (FLAC__uint64)pos;
+		return FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK;
+	}
+}
+
+FLAC__SeekableStreamDecoderLengthStatus length_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	struct stat filestats;
+	(void)decoder;
+
+	if(0 == file_decoder->private_->filename || stat(file_decoder->private_->filename, &filestats) != 0)
+		return FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR;
+	else {
+		*stream_length = (FLAC__uint64)filestats.st_size;
+		return FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK;
+	}
+}
+
+FLAC__bool eof_callback_(const OggFLAC__SeekableStreamDecoder *decoder, void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	return feof(file_decoder->private_->file)? true : false;
+}
+
+FLAC__StreamDecoderWriteStatus write_callback_(const OggFLAC__SeekableStreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	return file_decoder->private_->write_callback(file_decoder, frame, buffer, file_decoder->private_->client_data);
+}
+
+void metadata_callback_(const OggFLAC__SeekableStreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	file_decoder->private_->metadata_callback(file_decoder, metadata, file_decoder->private_->client_data);
+}
+
+void error_callback_(const OggFLAC__SeekableStreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+	OggFLAC__FileDecoder *file_decoder = (OggFLAC__FileDecoder *)client_data;
+	(void)decoder;
+
+	file_decoder->private_->error_callback(file_decoder, status, file_decoder->private_->client_data);
 }
diff --git a/src/test_libOggFLAC++/decoders.cpp b/src/test_libOggFLAC++/decoders.cpp
index 32020c2..fc534ee 100644
--- a/src/test_libOggFLAC++/decoders.cpp
+++ b/src/test_libOggFLAC++/decoders.cpp
@@ -91,18 +91,19 @@
 	if(error_occurred_)
 		return ::FLAC__STREAM_DECODER_READ_STATUS_ABORT;
 
-	if(feof(file_))
+	if(feof(file_)) {
+		*bytes = 0;
 		return ::FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
+	}
 	else if(*bytes > 0) {
-		unsigned bytes_read = ::fread(buffer, 1, *bytes, file_);
-		if(bytes_read == 0) {
+		*bytes = ::fread(buffer, 1, *bytes, file_);
+		if(*bytes == 0) {
 			if(feof(file_))
 				return ::FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
 			else
 				return ::FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
 		}
 		else {
-			*bytes = bytes_read;
 			return ::FLAC__STREAM_DECODER_READ_STATUS_CONTINUE;
 		}
 	}
@@ -819,9 +820,9 @@
 {
 	switch(common_read_callback_(buffer, bytes)) {
 		case ::FLAC__STREAM_DECODER_READ_STATUS_CONTINUE:
+		case ::FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM:
 			return ::FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK;
 		case ::FLAC__STREAM_DECODER_READ_STATUS_ABORT:
-		case ::FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM:
 			return ::FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR;
 		default:
 			FLAC__ASSERT(0);
@@ -1571,9 +1572,9 @@
 		printf("FAILED");
 
 	printf(", state = %u (%s)\n", (unsigned)((::OggFLAC__FileDecoderState)state), state.as_cstring());
-	if(state == ::OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR) {
-		FLAC::Decoder::File::State state_ = get_FLAC_file_decoder_state();
-		printf("      FLAC file decoder state = %u (%s)\n", (unsigned)((::FLAC__FileDecoderState)state_), state_.as_cstring());
+	if(state == ::OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR) {
+		OggFLAC::Decoder::SeekableStream::State state_ = get_seekable_stream_decoder_state();
+		printf("      seekable stream decoder state = %u (%s)\n", (unsigned)((::OggFLAC__SeekableStreamDecoderState)state_), state_.as_cstring());
 		if(state_ == ::OggFLAC__SEEKABLE_STREAM_DECODER_FLAC_SEEKABLE_STREAM_DECODER_ERROR) {
 			FLAC::Decoder::SeekableStream::State state__ = get_FLAC_seekable_stream_decoder_state();
 			printf("      FLAC seekable stream decoder state = %u (%s)\n", (unsigned)((::FLAC__SeekableStreamDecoderState)state__), state__.as_cstring());
@@ -1725,9 +1726,9 @@
 	OggFLAC::Decoder::File::State state = decoder->get_state();
 	printf("returned state = %u (%s)... OK\n", (unsigned)((::OggFLAC__FileDecoderState)state), state.as_cstring());
 
-	printf("testing get_FLAC_file_decoder_state()... ");
-	FLAC::Decoder::File::State state_ = decoder->get_FLAC_file_decoder_state();
-	printf("returned state = %u (%s)... OK\n", (unsigned)((::FLAC__FileDecoderState)state_), state_.as_cstring());
+	printf("testing get_seekable_stream_decoder_state()... ");
+	OggFLAC::Decoder::SeekableStream::State state_ = decoder->get_seekable_stream_decoder_state();
+	printf("returned state = %u (%s)... OK\n", (unsigned)((::OggFLAC__SeekableStreamDecoderState)state_), state_.as_cstring());
 
 	printf("testing get_FLAC_seekable_stream_decoder_state()... ");
 	FLAC::Decoder::SeekableStream::State state__ = decoder->get_FLAC_seekable_stream_decoder_state();
diff --git a/src/test_libOggFLAC/decoders.c b/src/test_libOggFLAC/decoders.c
index 3351d91..36c3e11 100644
--- a/src/test_libOggFLAC/decoders.c
+++ b/src/test_libOggFLAC/decoders.c
@@ -101,10 +101,10 @@
 		printf("FAILED");
 
 	printf(", state = %u (%s)\n", (unsigned)state, OggFLAC__SeekableStreamDecoderStateString[state]);
-	if(state == OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR) {
-		FLAC__FileDecoderState state_ = OggFLAC__file_decoder_get_FLAC_file_decoder_state(decoder);
-		printf("      FLAC file decoder state = %u (%s)\n", (unsigned)state_, FLAC__FileDecoderStateString[state_]);
-		if(state_ == FLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR) {
+	if(state == OggFLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR) {
+		OggFLAC__SeekableStreamDecoderState state_ = OggFLAC__file_decoder_get_seekable_stream_decoder_state(decoder);
+		printf("      seekable stream decoder state = %u (%s)\n", (unsigned)state_, OggFLAC__SeekableStreamDecoderStateString[state_]);
+		if(state_ == OggFLAC__SEEKABLE_STREAM_DECODER_FLAC_SEEKABLE_STREAM_DECODER_ERROR) {
 			FLAC__SeekableStreamDecoderState state__ = OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state(decoder);
 			printf("      FLAC seekable stream decoder state = %u (%s)\n", (unsigned)state__, FLAC__SeekableStreamDecoderStateString[state__]);
 			if(state__ == FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR) {
@@ -149,7 +149,6 @@
 static FLAC__StreamDecoderReadStatus stream_decoder_read_callback_(const OggFLAC__StreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data)
 {
 	stream_decoder_client_data_struct *dcd = (stream_decoder_client_data_struct*)client_data;
-	const unsigned requested_bytes = *bytes;
 
 	(void)decoder;
 
@@ -165,8 +164,8 @@
 		*bytes = 0;
 		return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
 	}
-	else if(requested_bytes > 0) {
-		*bytes = fread(buffer, 1, requested_bytes, dcd->file);
+	else if(*bytes > 0) {
+		*bytes = fread(buffer, 1, *bytes, dcd->file);
 		if(*bytes == 0) {
 			if(feof(dcd->file))
 				return FLAC__STREAM_DECODER_READ_STATUS_END_OF_STREAM;
@@ -1582,7 +1581,7 @@
 {
 	OggFLAC__FileDecoder *decoder;
 	OggFLAC__FileDecoderState state;
-	FLAC__FileDecoderState ffstate;
+	OggFLAC__SeekableStreamDecoderState sstate;
 	FLAC__SeekableStreamDecoderState fsstate;
 	FLAC__StreamDecoderState fstate;
 	seekable_stream_decoder_client_data_struct decoder_client_data;
@@ -1673,9 +1672,9 @@
 	state = OggFLAC__file_decoder_get_state(decoder);
 	printf("returned state = %u (%s)... OK\n", state, OggFLAC__FileDecoderStateString[state]);
 
-	printf("testing OggFLAC__file_decoder_get_FLAC_file_decoder_state()... ");
-	ffstate = OggFLAC__file_decoder_get_FLAC_file_decoder_state(decoder);
-	printf("returned state = %u (%s)... OK\n", ffstate, FLAC__FileDecoderStateString[ffstate]);
+	printf("testing OggFLAC__file_decoder_get_seekable_stream_decoder_state()... ");
+	sstate = OggFLAC__file_decoder_get_seekable_stream_decoder_state(decoder);
+	printf("returned state = %u (%s)... OK\n", sstate, OggFLAC__SeekableStreamDecoderStateString[sstate]);
 
 	printf("testing OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state()... ");
 	fsstate = OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state(decoder);