initial import

diff --git a/include/FLAC/utility.h b/include/FLAC/utility.h
new file mode 100644 (file)
index 0000000..9498a56
--- /dev/null
+++ b/include/FLAC/utility.h
@@ -0,0 +1,27 @@
+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2001  Josh Coalson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ */
+
+#ifndef FLAC__UTILITY_H
+#define FLAC__UTILITY_H
+
+#include "format.h"
+
+FLAC__bool FLAC__utility_get_streaminfo(const char *filename, FLAC__StreamMetaData_StreamInfo *streaminfo);
+
+#endif

diff --git a/src/libFLAC/utility.c b/src/libFLAC/utility.c
new file mode 100644 (file)
index 0000000..a5e8bfa
--- /dev/null
+++ b/src/libFLAC/utility.c
@@ -0,0 +1,77 @@
+/* libFLAC - Free Lossless Audio Codec library
+ * Copyright (C) 2001  Josh Coalson
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ */
+
+#include "FLAC/all.h"
+
+static FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *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);
+
+FLAC__bool FLAC__utility_get_streaminfo(const char *filename, FLAC__StreamMetaData_StreamInfo *streaminfo)
+{
+       FLAC__FileDecoder *decoder = FLAC__file_decoder_new();
+
+       if(0 == decoder)
+               return false;
+
+       FLAC__file_decoder_set_md5_checking(decoder, false);
+       FLAC__file_decoder_set_filename(decoder, filename);
+       FLAC__file_decoder_set_write_callback(decoder, write_callback_);
+       FLAC__file_decoder_set_metadata_callback(decoder, metadata_callback_);
+       FLAC__file_decoder_set_error_callback(decoder, error_callback_);
+       FLAC__file_decoder_set_client_data(decoder, &streaminfo);
+
+       if(FLAC__file_decoder_init(decoder) != FLAC__FILE_DECODER_OK)
+               return false;
+
+       if(!FLAC__file_decoder_process_metadata(decoder))
+               return false;
+
+       if(FLAC__file_decoder_get_state(decoder) != FLAC__FILE_DECODER_UNINITIALIZED)
+               FLAC__file_decoder_finish(decoder);
+
+       FLAC__file_decoder_delete(decoder);
+
+       return 0 != streaminfo; /* the metadata_callback_() will set streaminfo to 0 on an error */
+}
+
+FLAC__StreamDecoderWriteStatus write_callback_(const FLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 *buffer[], void *client_data)
+{
+       (void)decoder, (void)frame, (void)buffer, (void)client_data;
+
+       return FLAC__STREAM_DECODER_WRITE_CONTINUE;
+}
+
+void metadata_callback_(const FLAC__FileDecoder *decoder, const FLAC__StreamMetaData *metadata, void *client_data)
+{
+       FLAC__StreamMetaData_StreamInfo **streaminfo = (FLAC__StreamMetaData_StreamInfo **)client_data;
+       (void)decoder;
+
+       if(metadata->type == FLAC__METADATA_TYPE_STREAMINFO && 0 != *streaminfo)
+               **streaminfo = metadata->data.stream_info;
+}
+
+void error_callback_(const FLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data)
+{
+       FLAC__StreamMetaData_StreamInfo **streaminfo = (FLAC__StreamMetaData_StreamInfo **)client_data;
+       (void)decoder;
+
+       if(status != FLAC__STREAM_DECODER_ERROR_LOST_SYNC)
+               *streaminfo = 0;
+}