encoder.h

这是著名的TCPMP播放器在WINDWOWS,和WINCE下编译通过的源程序.笔者对其中的LIBMAD库做了针对ARM MPU的优化. 并增加了词幕功能.

/* libFLAC++ - Free Lossless Audio Codec library
 * Copyright (C) 2002,2003,2004,2005  Josh Coalson
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * - Neither the name of the Xiph.org Foundation nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef FLACPP__ENCODER_H
#define FLACPP__ENCODER_H

#include "export.h"

#include "FLAC/file_encoder.h"
#include "FLAC/seekable_stream_encoder.h"
#include "FLAC/stream_encoder.h"
#include "decoder.h"
#include "metadata.h"


/** \file include/FLAC++/encoder.h
 *
 *  \brief
 *  This module contains the classes which implement the various
 *  encoders.
 *
 *  See the detailed documentation in the
 *  \link flacpp_encoder encoder \endlink module.
 */

/** \defgroup flacpp_encoder FLAC++/encoder.h: encoder classes
 *  \ingroup flacpp
 *
 *  \brief
 *  This module describes the three encoder layers provided by libFLAC++.
 *
 * The libFLAC++ encoder classes are object wrappers around their
 * counterparts in libFLAC.  All three encoding layers available in
 * libFLAC are also provided here.  The interface is very similar;
 * make sure to read the \link flac_encoder libFLAC encoder module \endlink.
 *
 * The only real difference here is that instead of passing in C function
 * pointers for callbacks, you inherit from the encoder class and provide
 * implementations for the callbacks in the derived class; because of this
 * there is no need for a 'client_data' property.
 */

namespace FLAC {
	namespace Encoder {

		// ============================================================
		//
		//  Equivalent: FLAC__StreamEncoder
		//
		// ============================================================

		/** \defgroup flacpp_stream_encoder FLAC++/encoder.h: stream encoder class
		 *  \ingroup flacpp_encoder
		 *
		 *  \brief
		 *  This class wraps the ::FLAC__StreamEncoder.
		 *
		 * See the \link flac_stream_encoder libFLAC stream encoder module \endlink.
		 *
		 * \{
		 */

		/** This class wraps the ::FLAC__StreamEncoder.
		 */
		class FLACPP_API Stream {
		public:
			class FLACPP_API State {
			public:
				inline State(::FLAC__StreamEncoderState state): state_(state) { }
				inline operator ::FLAC__StreamEncoderState() const { return state_; }
				inline const char *as_cstring() const { return ::FLAC__StreamEncoderStateString[state_]; }
				inline const char *resolved_as_cstring(const Stream &encoder) const { return ::FLAC__stream_encoder_get_resolved_state_string(encoder.encoder_); }
			protected:
				::FLAC__StreamEncoderState state_;
			};

			Stream();
			virtual ~Stream();

			bool is_valid() const;
			inline operator bool() const { return is_valid(); }

			bool set_verify(bool value);
			bool set_streamable_subset(bool value);
			bool set_do_mid_side_stereo(bool value);
			bool set_loose_mid_side_stereo(bool value);
			bool set_channels(unsigned value);
			bool set_bits_per_sample(unsigned value);
			bool set_sample_rate(unsigned value);
			bool set_blocksize(unsigned value);
			bool set_max_lpc_order(unsigned value);
			bool set_qlp_coeff_precision(unsigned value);
			bool set_do_qlp_coeff_prec_search(bool value);
			bool set_do_escape_coding(bool value);
			bool set_do_exhaustive_model_search(bool value);
			bool set_min_residual_partition_order(unsigned value);
			bool set_max_residual_partition_order(unsigned value);
			bool set_rice_parameter_search_dist(unsigned value);
			bool set_total_samples_estimate(FLAC__uint64 value);
			bool set_metadata(::FLAC__StreamMetadata **metadata, unsigned num_blocks);
			bool set_metadata(FLAC::Metadata::Prototype **metadata, unsigned num_blocks);

			State    get_state() const;
			Decoder::Stream::State get_verify_decoder_state() const;
			void get_verify_decoder_error_stats(FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got);
			bool     get_verify() const;
			bool     get_streamable_subset() const;
			bool     get_do_mid_side_stereo() const;
			bool     get_loose_mid_side_stereo() const;
			unsigned get_channels() const;
			unsigned get_bits_per_sample() const;
			unsigned get_sample_rate() const;
			unsigned get_blocksize() const;
			unsigned get_max_lpc_order() const;
			unsigned get_qlp_coeff_precision() const;
			bool     get_do_qlp_coeff_prec_search() const;
			bool     get_do_escape_coding() const;
			bool     get_do_exhaustive_model_search() const;
			unsigned get_min_residual_partition_order() const;
			unsigned get_max_residual_partition_order() const;
			unsigned get_rice_parameter_search_dist() const;
			FLAC__uint64 get_total_samples_estimate() const;

			State init();

			void finish();

			bool process(const FLAC__int32 * const buffer[], unsigned samples);
			bool process_interleaved(const FLAC__int32 buffer[], unsigned samples);
		protected:
			virtual ::FLAC__StreamEncoderWriteStatus write_callback(const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame) = 0;
			virtual void metadata_callback(const ::FLAC__StreamMetadata *metadata) = 0;

#if (defined _MSC_VER) || (defined __GNUG__ && (__GNUG__ < 2 || (__GNUG__ == 2 && __GNUC_MINOR__ < 96))) || (defined __SUNPRO_CC)
			// lame hack: some MSVC/GCC versions can't see a protected encoder_ from nested State::resolved_as_cstring()
			friend State;
#endif
			::FLAC__StreamEncoder *encoder_;
		private:
			static ::FLAC__StreamEncoderWriteStatus write_callback_(const ::FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
			static void metadata_callback_(const ::FLAC__StreamEncoder *encoder, const ::FLAC__StreamMetadata *metadata, void *client_data);

			// Private and undefined so you can't use them:
			Stream(const Stream &);
			void operator=(const Stream &);
		};

		/* \} */

		/** \defgroup flacpp_seekable_stream_encoder FLAC++/encoder.h: seekable stream encoder class
		 *  \ingroup flacpp_encoder
		 *
		 *  \brief
		 *  This class wraps the ::FLAC__SeekableStreamEncoder.
		 *
		 * See the \link flac_seekable_stream_encoder libFLAC seekable stream encoder module \endlink.
		 *
		 * \{
		 */

		/** This class wraps the ::FLAC__SeekableStreamEncoder.
		 */
		class FLACPP_API SeekableStream {