Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 117 insertions, 0 deletions

diff --git a/Src/replicant/nsid3v2/frame.h b/Src/replicant/nsid3v2/frame.h
new file mode 100644
index 00000000..3cf5fe99
--- /dev/null
+++ b/Src/replicant/nsid3v2/frame.h
@@ -0,0 +1,117 @@
+#pragma once
+#include "frameheader.h"
+#include "nu/PtrDeque.h"
+
+namespace ID3v2
+{
+	class Frame : public nu::PtrDequeNode
+	{
+	public:
+		virtual ~Frame();
+		int NewData(size_t new_len, void **data, size_t *data_len);
+		int GetData(const void **data, size_t *data_len) const;
+		size_t GetDataSize() const;
+		virtual const int8_t *GetIdentifier() const=0;
+		virtual unsigned int GetVersion() const=0;
+		
+		virtual bool Encrypted() const;
+		virtual bool Compressed() const;
+		virtual bool Grouped() const;
+		virtual bool ReadOnly() const;
+		virtual bool FrameUnsynchronised() const;
+		virtual bool DataLengthIndicated() const;
+		virtual bool TagAlterPreservation() const;
+		virtual bool FileAlterPreservation() const;
+	protected:
+		Frame();
+		void *data;
+		size_t data_size; /* REAL size, might be different from header.headerData.size */
+	};
+}
+
+namespace ID3v2_2
+{
+	class Frame : public ID3v2::Frame
+	{
+	public:
+		Frame(const ID3v2::Header &_header, const int8_t *id, int flags); // creates an empty frame with a given ID
+		Frame(const ID3v2_2::FrameHeader &_header);
+		int Parse(const void *_data, size_t len, size_t *read);
+		int SerializedSize(uint32_t *length, const ID3v2::Header &tag_header, int flags) const;
+		// there is enough room guaranteed to be present because it will be checked with SerializedSize()
+		int Serialize(void *data, uint32_t *written, const ID3v2::Header &tag_header, int flags) const;
+		const int8_t *GetIdentifier() const;
+		unsigned int GetVersion() const { return 2; }
+	private:
+		ID3v2_2::FrameHeader header;
+	};
+}
+
+
+namespace ID3v2_3
+{
+	class Frame : public ID3v2::Frame
+	{
+	public:
+		Frame(const ID3v2::Header &_header, const int8_t *id, int flags); // creates an empty frame with a given ID
+		Frame(const ID3v2_3::FrameHeader &_header);
+		int Parse(const void *_data, size_t len, size_t *read);
+		
+		int SerializedSize(uint32_t *length, const ID3v2::Header &tag_header, int flags) const;
+		// there is enough room guaranteed to be present because it will be checked with SerializedSize()
+		int Serialize(void *data, uint32_t *written, const ID3v2::Header &tag_header, int flags) const;
+
+		const int8_t *GetIdentifier() const;
+		unsigned int GetVersion() const { return 3; }
+		virtual bool Encrypted() const;
+		virtual bool Compressed() const;
+		virtual bool Grouped() const;
+		virtual bool ReadOnly() const;
+		virtual bool TagAlterPreservation() const;
+		virtual bool FileAlterPreservation() const;
+
+	private:
+		ID3v2_3::FrameHeader header;
+		uint8_t group_identity;
+		/* helper function
+		reads num_bytes from input into output, dealing with re-synchronization and length checking 
+		increments bytes_read value by number of input bytes read (different from num_bytes when data is unsynchronized
+		decrements input_len by bytes read
+		decrements output_len by bytes written
+		*/
+		bool ReadData(void *output, const void *&input, size_t &input_len, size_t &frame_len, size_t num_bytes, size_t *bytes_read) const;
+	};
+}
+
+namespace ID3v2_4
+{
+	class Frame : public ID3v2::Frame
+	{
+	public:
+		Frame(const ID3v2::Header &_header, const int8_t *id, int flags); // creates an empty frame with a given ID
+		Frame(const ID3v2_4::FrameHeader &_header);
+		int Parse(const void *_data, size_t len, size_t *read);
+		int SerializedSize(uint32_t *length, const ID3v2::Header &tag_header, int flags) const;
+		int Serialize(void *data, uint32_t *written, const ID3v2::Header &tag_header, int flags) const;
+		const int8_t *GetIdentifier() const;
+		unsigned int GetVersion() const { return 4; }
+		virtual bool Encrypted() const;
+		virtual bool Compressed() const;
+		virtual bool Grouped() const;
+		virtual bool ReadOnly() const;
+		virtual bool FrameUnsynchronised() const;
+		virtual bool DataLengthIndicated() const;
+		virtual bool TagAlterPreservation() const;
+		virtual bool FileAlterPreservation() const;
+	private:
+		ID3v2_4::FrameHeader header;
+		uint8_t group_identity;
+		/* helper function
+		reads num_bytes from input into output, dealing with re-synchronization and length checking 
+		increments bytes_read value by number of input bytes read (different from num_bytes when data is unsynchronized
+		decrements input_len by bytes read
+		decrements output_len by bytes written
+		*/
+		bool ReadData(void *output, const void *&input, size_t &input_len, size_t &frame_len, size_t num_bytes, size_t *bytes_read) const;
+	};
+}