decoder/*: move to decoder/plugins/

src/decoder/plugins/FlacMetadata.hxx

@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2003-2014 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPD_FLAC_METADATA_H
+#define MPD_FLAC_METADATA_H
+
+#include "Compiler.h"
+#include "FlacIOHandle.hxx"
+
+#include <FLAC/metadata.h>
+
+#include <assert.h>
+
+struct tag_handler;
+class MixRampInfo;
+
+class FlacMetadataChain {
+	FLAC__Metadata_Chain *chain;
+
+public:
+	FlacMetadataChain():chain(::FLAC__metadata_chain_new()) {}
+
+	~FlacMetadataChain() {
+		::FLAC__metadata_chain_delete(chain);
+	}
+
+	explicit operator FLAC__Metadata_Chain *() {
+		return chain;
+	}
+
+	bool Read(const char *path) {
+		return ::FLAC__metadata_chain_read(chain, path);
+	}
+
+	bool Read(FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) {
+		return ::FLAC__metadata_chain_read_with_callbacks(chain,
+								  handle,
+								  callbacks);
+	}
+
+	bool Read(InputStream &is) {
+		return Read(::ToFlacIOHandle(is), ::GetFlacIOCallbacks(is));
+	}
+
+	bool ReadOgg(const char *path) {
+		return ::FLAC__metadata_chain_read_ogg(chain, path);
+	}
+
+	bool ReadOgg(FLAC__IOHandle handle, FLAC__IOCallbacks callbacks) {
+		return ::FLAC__metadata_chain_read_ogg_with_callbacks(chain,
+								      handle,
+								      callbacks);
+	}
+
+	bool ReadOgg(InputStream &is) {
+		return ReadOgg(::ToFlacIOHandle(is), ::GetFlacIOCallbacks(is));
+	}
+
+	gcc_pure
+	FLAC__Metadata_ChainStatus GetStatus() const {
+		return ::FLAC__metadata_chain_status(chain);
+	}
+
+	gcc_pure
+	const char *GetStatusString() const {
+		return FLAC__Metadata_ChainStatusString[GetStatus()];
+	}
+
+	void Scan(const tag_handler *handler, void *handler_ctx);
+};
+
+class FLACMetadataIterator {
+	FLAC__Metadata_Iterator *iterator;
+
+public:
+	FLACMetadataIterator():iterator(::FLAC__metadata_iterator_new()) {}
+
+	FLACMetadataIterator(FlacMetadataChain &chain)
+		:iterator(::FLAC__metadata_iterator_new()) {
+		::FLAC__metadata_iterator_init(iterator,
+					       (FLAC__Metadata_Chain *)chain);
+	}
+
+	~FLACMetadataIterator() {
+		::FLAC__metadata_iterator_delete(iterator);
+	}
+
+	bool Next() {
+		return ::FLAC__metadata_iterator_next(iterator);
+	}
+
+	gcc_pure
+	FLAC__StreamMetadata *GetBlock() {
+		return ::FLAC__metadata_iterator_get_block(iterator);
+	}
+};
+
+struct Tag;
+struct ReplayGainInfo;
+
+static inline unsigned
+flac_duration(const FLAC__StreamMetadata_StreamInfo *stream_info)
+{
+	assert(stream_info->sample_rate > 0);
+
+	return (stream_info->total_samples + stream_info->sample_rate - 1) /
+		stream_info->sample_rate;
+}
+
+bool
+flac_parse_replay_gain(ReplayGainInfo &rgi,
+		       const FLAC__StreamMetadata *block);
+
+MixRampInfo
+flac_parse_mixramp(const FLAC__StreamMetadata *block);
+
+Tag
+flac_vorbis_comments_to_tag(const FLAC__StreamMetadata_VorbisComment *comment);
+
+void
+flac_scan_metadata(const FLAC__StreamMetadata *block,
+		   const tag_handler *handler, void *handler_ctx);
+
+#endif