src/test_libOggFLAC++/encoders.cc - platform/external/flac - Gitiles

 /* test_libOggFLAC++ - Unit tester for libOggFLAC++
  * Copyright (C) 2002  Josh Coalson
  *
  * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */

 #include "encoders.h"
 extern "C" {
 #include "file_utils.h"
 }
 #include "FLAC/assert.h"
 #include "OggFLAC++/encoder.h"
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>

 static ::FLAC__StreamMetadata streaminfo_, padding_, seektable_, application1_, application2_, vorbiscomment_;
 static ::FLAC__StreamMetadata *metadata_sequence_[] = { &padding_, &seektable_, &application1_, &application2_, &vorbiscomment_ };
 static const unsigned num_metadata_ = 5;

 static void *malloc_or_die_(size_t size)
 {
 	void *x = malloc(size);
 	if(0 == x) {
 		fprintf(stderr, "ERROR: out of memory allocating %u bytes\n", (unsigned)size);
 		exit(1);
 	}
 	return x;
 }

 static void init_metadata_blocks_()
 {
 	/*
 		most of the actual numbers and data in the blocks don't matter,
 		we just want to make sure the encoder encodes them correctly

 		remember, the metadata interface gets tested after the encoders,
 		so we do all the metadata manipulation here without it.
 	*/

 	/* min/max_framesize and md5sum don't get written at first, so we have to leave them 0 */
 	streaminfo_.is_last = false;
 	streaminfo_.type = ::FLAC__METADATA_TYPE_STREAMINFO;
 	streaminfo_.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
 	streaminfo_.data.stream_info.min_blocksize = 576;
 	streaminfo_.data.stream_info.max_blocksize = 576;
 	streaminfo_.data.stream_info.min_framesize = 0;
 	streaminfo_.data.stream_info.max_framesize = 0;
 	streaminfo_.data.stream_info.sample_rate = 44100;
 	streaminfo_.data.stream_info.channels = 1;
 	streaminfo_.data.stream_info.bits_per_sample = 8;
 	streaminfo_.data.stream_info.total_samples = 0;
 	memset(streaminfo_.data.stream_info.md5sum, 0, 16);

 	padding_.is_last = false;
 	padding_.type = ::FLAC__METADATA_TYPE_PADDING;
 	padding_.length = 1234;

 	seektable_.is_last = false;
 	seektable_.type = ::FLAC__METADATA_TYPE_SEEKTABLE;
 	seektable_.data.seek_table.num_points = 2;
 	seektable_.length = seektable_.data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH;
 	seektable_.data.seek_table.points = (::FLAC__StreamMetadata_SeekPoint*)malloc_or_die_(seektable_.data.seek_table.num_points * sizeof(::FLAC__StreamMetadata_SeekPoint));
 	seektable_.data.seek_table.points[0].sample_number = 0;
 	seektable_.data.seek_table.points[0].stream_offset = 0;
 	seektable_.data.seek_table.points[0].frame_samples = streaminfo_.data.stream_info.min_blocksize;
 	seektable_.data.seek_table.points[1].sample_number = ::FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
 	seektable_.data.seek_table.points[1].stream_offset = 1000;
 	seektable_.data.seek_table.points[1].frame_samples = streaminfo_.data.stream_info.min_blocksize;

 	application1_.is_last = false;
 	application1_.type = ::FLAC__METADATA_TYPE_APPLICATION;
 	application1_.length = 8;
 	memcpy(application1_.data.application.id, "\xfe\xdc\xba\x98", 4);
 	application1_.data.application.data = (FLAC__byte*)malloc_or_die_(4);
 	memcpy(application1_.data.application.data, "\xf0\xe1\xd2\xc3", 4);

 	application2_.is_last = false;
 	application2_.type = ::FLAC__METADATA_TYPE_APPLICATION;
 	application2_.length = 4;
 	memcpy(application2_.data.application.id, "\x76\x54\x32\x10", 4);
 	application2_.data.application.data = 0;

 	vorbiscomment_.is_last = true;
 	vorbiscomment_.type = ::FLAC__METADATA_TYPE_VORBIS_COMMENT;
 	vorbiscomment_.length = (4 + 8) + 4 + (4 + 5) + (4 + 0);
 	vorbiscomment_.data.vorbis_comment.vendor_string.length = 8;
 	vorbiscomment_.data.vorbis_comment.vendor_string.entry = (FLAC__byte*)malloc_or_die_(8);
 	memcpy(vorbiscomment_.data.vorbis_comment.vendor_string.entry, "flac 1.x", 8);
 	vorbiscomment_.data.vorbis_comment.num_comments = 2;
 	vorbiscomment_.data.vorbis_comment.comments = (::FLAC__StreamMetadata_VorbisComment_Entry*)malloc_or_die_(vorbiscomment_.data.vorbis_comment.num_comments * sizeof(::FLAC__StreamMetadata_VorbisComment_Entry));
 	vorbiscomment_.data.vorbis_comment.comments[0].length = 5;
 	vorbiscomment_.data.vorbis_comment.comments[0].entry = (FLAC__byte*)malloc_or_die_(5);
 	memcpy(vorbiscomment_.data.vorbis_comment.comments[0].entry, "ab=cd", 5);
 	vorbiscomment_.data.vorbis_comment.comments[1].length = 0;
 	vorbiscomment_.data.vorbis_comment.comments[1].entry = 0;
 }

 static void free_metadata_blocks_()
 {
 	free(seektable_.data.seek_table.points);
 	free(application1_.data.application.data);
 	free(vorbiscomment_.data.vorbis_comment.vendor_string.entry);
 	free(vorbiscomment_.data.vorbis_comment.comments[0].entry);
 	free(vorbiscomment_.data.vorbis_comment.comments);
 }

 class StreamEncoder : public OggFLAC::Encoder::Stream {
 public:
 	StreamEncoder(): OggFLAC::Encoder::Stream() { }
 	~StreamEncoder() { }

 	// from OggFLAC::Encoder::Stream
 	::FLAC__StreamEncoderWriteStatus write_callback(const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame);

 	bool die(const char *msg = 0) const;
 };

 ::FLAC__StreamEncoderWriteStatus StreamEncoder::write_callback(const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame)
 {
 	(void)buffer, (void)bytes, (void)samples, (void)current_frame;

 	return ::FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
 }

 bool StreamEncoder::die(const char *msg) const
 {
 	State state = get_state();

 	if(msg)
 		printf("FAILED, %s", msg);
 	else
 		printf("FAILED");

 	printf(", state = %u (%s)\n", (unsigned)((::OggFLAC__StreamEncoderState)state), state.as_cstring());
 	if(state == ::OggFLAC__STREAM_ENCODER_FLAC_STREAM_ENCODER_ERROR) {
 		FLAC::Encoder::Stream::State state_ = get_FLAC_stream_encoder_state();
 		printf("      FLAC stream encoder state = %u (%s)\n", (unsigned)((::FLAC__StreamEncoderState)state_), state_.as_cstring());
 		if(state_ == ::FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR) {
 			FLAC::Decoder::Stream::State dstate = get_verify_decoder_state();
 			printf("      verify decoder state = %u (%s)\n", (unsigned)((::FLAC__StreamDecoderState)dstate), dstate.as_cstring());
 		}
 	}

 	return false;
 }

 static bool test_stream_encoder()
 {
 	StreamEncoder *encoder;
 	FLAC__int32 samples[1024];
 	FLAC__int32 *samples_array[1] = { samples };
 	unsigned i;

 	printf("\n+++ libOggFLAC++ unit test: OggFLAC::Encoder::Stream\n\n");

 	printf("allocating encoder instance... ");
 	encoder = new StreamEncoder();
 	if(0 == encoder) {
 		printf("FAILED, new returned NULL\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing is_valid()... ");
 	if(!encoder->is_valid()) {
 		printf("FAILED, returned false\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing set_verify()... ");
 	if(!encoder->set_verify(true))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_streamable_subset()... ");
 	if(!encoder->set_streamable_subset(true))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_do_mid_side_stereo()... ");
 	if(!encoder->set_do_mid_side_stereo(false))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_loose_mid_side_stereo()... ");
 	if(!encoder->set_loose_mid_side_stereo(false))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_channels()... ");
 	if(!encoder->set_channels(streaminfo_.data.stream_info.channels))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_bits_per_sample()... ");
 	if(!encoder->set_bits_per_sample(streaminfo_.data.stream_info.bits_per_sample))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_sample_rate()... ");
 	if(!encoder->set_sample_rate(streaminfo_.data.stream_info.sample_rate))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_blocksize()... ");
 	if(!encoder->set_blocksize(streaminfo_.data.stream_info.min_blocksize))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_max_lpc_order()... ");
 	if(!encoder->set_max_lpc_order(0))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_qlp_coeff_precision()... ");
 	if(!encoder->set_qlp_coeff_precision(0))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_do_qlp_coeff_prec_search()... ");
 	if(!encoder->set_do_qlp_coeff_prec_search(false))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_do_escape_coding()... ");
 	if(!encoder->set_do_escape_coding(false))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_do_exhaustive_model_search()... ");
 	if(!encoder->set_do_exhaustive_model_search(false))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_min_residual_partition_order()... ");
 	if(!encoder->set_min_residual_partition_order(0))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_max_residual_partition_order()... ");
 	if(!encoder->set_max_residual_partition_order(0))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_rice_parameter_search_dist()... ");
 	if(!encoder->set_rice_parameter_search_dist(0))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_total_samples_estimate()... ");
 	if(!encoder->set_total_samples_estimate(streaminfo_.data.stream_info.total_samples))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing set_metadata()... ");
 	if(!encoder->set_metadata(metadata_sequence_, num_metadata_))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing init()... ");
 	if(encoder->init() != ::OggFLAC__STREAM_ENCODER_OK)
 		return encoder->die();
 	printf("OK\n");

 	printf("testing get_state()... ");
 	OggFLAC::Encoder::Stream::State state = encoder->get_state();
 	printf("returned state = %u (%s)... OK\n", (unsigned)((::OggFLAC__StreamEncoderState)state), state.as_cstring());

 	printf("testing get_FLAC_stream_encoder_state()... ");
 	FLAC::Encoder::Stream::State state_ = encoder->get_FLAC_stream_encoder_state();
 	printf("returned state = %u (%s)... OK\n", (unsigned)((::FLAC__StreamEncoderState)state_), state_.as_cstring());

 	printf("testing get_verify_decoder_state()... ");
 	FLAC::Decoder::Stream::State dstate = encoder->get_verify_decoder_state();
 	printf("returned state = %u (%s)... OK\n", (unsigned)((::FLAC__StreamDecoderState)dstate), dstate.as_cstring());

 	{
 		FLAC__uint64 absolute_sample;
 		unsigned frame_number;
 		unsigned channel;
 		unsigned sample;
 		FLAC__int32 expected;
 		FLAC__int32 got;

 		printf("testing get_verify_decoder_error_stats()... ");
 		encoder->get_verify_decoder_error_stats(&absolute_sample, &frame_number, &channel, &sample, &expected, &got);
 		printf("OK\n");
 	}

 	printf("testing get_verify()... ");
 	if(encoder->get_verify() != true) {
 		printf("FAILED, expected true, got false\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_streamable_subset()... ");
 	if(encoder->get_streamable_subset() != true) {
 		printf("FAILED, expected true, got false\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_do_mid_side_stereo()... ");
 	if(encoder->get_do_mid_side_stereo() != false) {
 		printf("FAILED, expected false, got true\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_loose_mid_side_stereo()... ");
 	if(encoder->get_loose_mid_side_stereo() != false) {
 		printf("FAILED, expected false, got true\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_channels()... ");
 	if(encoder->get_channels() != streaminfo_.data.stream_info.channels) {
 		printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.channels, encoder->get_channels());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_bits_per_sample()... ");
 	if(encoder->get_bits_per_sample() != streaminfo_.data.stream_info.bits_per_sample) {
 		printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.bits_per_sample, encoder->get_bits_per_sample());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_sample_rate()... ");
 	if(encoder->get_sample_rate() != streaminfo_.data.stream_info.sample_rate) {
 		printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.sample_rate, encoder->get_sample_rate());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_blocksize()... ");
 	if(encoder->get_blocksize() != streaminfo_.data.stream_info.min_blocksize) {
 		printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.min_blocksize, encoder->get_blocksize());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_max_lpc_order()... ");
 	if(encoder->get_max_lpc_order() != 0) {
 		printf("FAILED, expected %u, got %u\n", 0, encoder->get_max_lpc_order());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_qlp_coeff_precision()... ");
 	(void)encoder->get_qlp_coeff_precision();
 	/* we asked the encoder to auto select this so we accept anything */
 	printf("OK\n");

 	printf("testing get_do_qlp_coeff_prec_search()... ");
 	if(encoder->get_do_qlp_coeff_prec_search() != false) {
 		printf("FAILED, expected false, got true\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_do_escape_coding()... ");
 	if(encoder->get_do_escape_coding() != false) {
 		printf("FAILED, expected false, got true\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_do_exhaustive_model_search()... ");
 	if(encoder->get_do_exhaustive_model_search() != false) {
 		printf("FAILED, expected false, got true\n");
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_min_residual_partition_order()... ");
 	if(encoder->get_min_residual_partition_order() != 0) {
 		printf("FAILED, expected %u, got %u\n", 0, encoder->get_min_residual_partition_order());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_max_residual_partition_order()... ");
 	if(encoder->get_max_residual_partition_order() != 0) {
 		printf("FAILED, expected %u, got %u\n", 0, encoder->get_max_residual_partition_order());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_rice_parameter_search_dist()... ");
 	if(encoder->get_rice_parameter_search_dist() != 0) {
 		printf("FAILED, expected %u, got %u\n", 0, encoder->get_rice_parameter_search_dist());
 		return false;
 	}
 	printf("OK\n");

 	printf("testing get_total_samples_estimate()... ");
 	if(encoder->get_total_samples_estimate() != streaminfo_.data.stream_info.total_samples) {
 		printf("FAILED, expected %llu, got %llu\n", streaminfo_.data.stream_info.total_samples, encoder->get_total_samples_estimate());
 		return false;
 	}
 	printf("OK\n");

 	/* init the dummy sample buffer */
 	for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
 		samples[i] = i & 7;

 	printf("testing process()... ");
 	if(!encoder->process(samples_array, sizeof(samples) / sizeof(FLAC__int32)))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing process_interleaved()... ");
 	if(!encoder->process_interleaved(samples, sizeof(samples) / sizeof(FLAC__int32)))
 		return encoder->die("returned false");
 	printf("OK\n");

 	printf("testing finish()... ");
 	encoder->finish();
 	printf("OK\n");

 	printf("freeing encoder instance... ");
 	delete encoder;
 	printf("OK\n");

 	printf("\nPASSED!\n");

 	return true;
 }

 bool test_encoders()
 {
 	init_metadata_blocks_();

 	if(!test_stream_encoder())
 		return false;

 	free_metadata_blocks_();

 	return true;
 }
	/* test_libOggFLAC++ - Unit tester for libOggFLAC++
	* Copyright (C) 2002 Josh Coalson
	*
	* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	*/

	#include "encoders.h"
	extern "C" {
	#include "file_utils.h"
	}
	#include "FLAC/assert.h"
	#include "OggFLAC++/encoder.h"
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	static ::FLAC__StreamMetadata streaminfo_, padding_, seektable_, application1_, application2_, vorbiscomment_;
	static ::FLAC__StreamMetadata *metadata_sequence_[] = { &padding_, &seektable_, &application1_, &application2_, &vorbiscomment_ };
	static const unsigned num_metadata_ = 5;

	static void *malloc_or_die_(size_t size)
	{
	void *x = malloc(size);
	if(0 == x) {
	fprintf(stderr, "ERROR: out of memory allocating %u bytes\n", (unsigned)size);
	exit(1);
	}
	return x;
	}

	static void init_metadata_blocks_()
	{
	/*
	most of the actual numbers and data in the blocks don't matter,
	we just want to make sure the encoder encodes them correctly

	remember, the metadata interface gets tested after the encoders,
	so we do all the metadata manipulation here without it.
	*/

	/* min/max_framesize and md5sum don't get written at first, so we have to leave them 0 */
	streaminfo_.is_last = false;
	streaminfo_.type = ::FLAC__METADATA_TYPE_STREAMINFO;
	streaminfo_.length = FLAC__STREAM_METADATA_STREAMINFO_LENGTH;
	streaminfo_.data.stream_info.min_blocksize = 576;
	streaminfo_.data.stream_info.max_blocksize = 576;
	streaminfo_.data.stream_info.min_framesize = 0;
	streaminfo_.data.stream_info.max_framesize = 0;
	streaminfo_.data.stream_info.sample_rate = 44100;
	streaminfo_.data.stream_info.channels = 1;
	streaminfo_.data.stream_info.bits_per_sample = 8;
	streaminfo_.data.stream_info.total_samples = 0;
	memset(streaminfo_.data.stream_info.md5sum, 0, 16);

	padding_.is_last = false;
	padding_.type = ::FLAC__METADATA_TYPE_PADDING;
	padding_.length = 1234;

	seektable_.is_last = false;
	seektable_.type = ::FLAC__METADATA_TYPE_SEEKTABLE;
	seektable_.data.seek_table.num_points = 2;
	seektable_.length = seektable_.data.seek_table.num_points * FLAC__STREAM_METADATA_SEEKPOINT_LENGTH;
	seektable_.data.seek_table.points = (::FLAC__StreamMetadata_SeekPoint)malloc_or_die_(seektable_.data.seek_table.num_points sizeof(::FLAC__StreamMetadata_SeekPoint));
	seektable_.data.seek_table.points[0].sample_number = 0;
	seektable_.data.seek_table.points[0].stream_offset = 0;
	seektable_.data.seek_table.points[0].frame_samples = streaminfo_.data.stream_info.min_blocksize;
	seektable_.data.seek_table.points[1].sample_number = ::FLAC__STREAM_METADATA_SEEKPOINT_PLACEHOLDER;
	seektable_.data.seek_table.points[1].stream_offset = 1000;
	seektable_.data.seek_table.points[1].frame_samples = streaminfo_.data.stream_info.min_blocksize;

	application1_.is_last = false;
	application1_.type = ::FLAC__METADATA_TYPE_APPLICATION;
	application1_.length = 8;
	memcpy(application1_.data.application.id, "\xfe\xdc\xba\x98", 4);
	application1_.data.application.data = (FLAC__byte*)malloc_or_die_(4);
	memcpy(application1_.data.application.data, "\xf0\xe1\xd2\xc3", 4);

	application2_.is_last = false;
	application2_.type = ::FLAC__METADATA_TYPE_APPLICATION;
	application2_.length = 4;
	memcpy(application2_.data.application.id, "\x76\x54\x32\x10", 4);
	application2_.data.application.data = 0;

	vorbiscomment_.is_last = true;
	vorbiscomment_.type = ::FLAC__METADATA_TYPE_VORBIS_COMMENT;
	vorbiscomment_.length = (4 + 8) + 4 + (4 + 5) + (4 + 0);
	vorbiscomment_.data.vorbis_comment.vendor_string.length = 8;
	vorbiscomment_.data.vorbis_comment.vendor_string.entry = (FLAC__byte*)malloc_or_die_(8);
	memcpy(vorbiscomment_.data.vorbis_comment.vendor_string.entry, "flac 1.x", 8);
	vorbiscomment_.data.vorbis_comment.num_comments = 2;
	vorbiscomment_.data.vorbis_comment.comments = (::FLAC__StreamMetadata_VorbisComment_Entry)malloc_or_die_(vorbiscomment_.data.vorbis_comment.num_comments sizeof(::FLAC__StreamMetadata_VorbisComment_Entry));
	vorbiscomment_.data.vorbis_comment.comments[0].length = 5;
	vorbiscomment_.data.vorbis_comment.comments[0].entry = (FLAC__byte*)malloc_or_die_(5);
	memcpy(vorbiscomment_.data.vorbis_comment.comments[0].entry, "ab=cd", 5);
	vorbiscomment_.data.vorbis_comment.comments[1].length = 0;
	vorbiscomment_.data.vorbis_comment.comments[1].entry = 0;
	}

	static void free_metadata_blocks_()
	{
	free(seektable_.data.seek_table.points);
	free(application1_.data.application.data);
	free(vorbiscomment_.data.vorbis_comment.vendor_string.entry);
	free(vorbiscomment_.data.vorbis_comment.comments[0].entry);
	free(vorbiscomment_.data.vorbis_comment.comments);
	}

	class StreamEncoder : public OggFLAC::Encoder::Stream {
	public:
	StreamEncoder(): OggFLAC::Encoder::Stream() { }
	~StreamEncoder() { }

	// from OggFLAC::Encoder::Stream
	::FLAC__StreamEncoderWriteStatus write_callback(const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame);

	bool die(const char *msg = 0) const;
	};

	::FLAC__StreamEncoderWriteStatus StreamEncoder::write_callback(const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame)
	{
	(void)buffer, (void)bytes, (void)samples, (void)current_frame;

	return ::FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
	}

	bool StreamEncoder::die(const char *msg) const
	{
	State state = get_state();

	if(msg)
	printf("FAILED, %s", msg);
	else
	printf("FAILED");

	printf(", state = %u (%s)\n", (unsigned)((::OggFLAC__StreamEncoderState)state), state.as_cstring());
	if(state == ::OggFLAC__STREAM_ENCODER_FLAC_STREAM_ENCODER_ERROR) {
	FLAC::Encoder::Stream::State state_ = get_FLAC_stream_encoder_state();
	printf(" FLAC stream encoder state = %u (%s)\n", (unsigned)((::FLAC__StreamEncoderState)state_), state_.as_cstring());
	if(state_ == ::FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR) {
	FLAC::Decoder::Stream::State dstate = get_verify_decoder_state();
	printf(" verify decoder state = %u (%s)\n", (unsigned)((::FLAC__StreamDecoderState)dstate), dstate.as_cstring());
	}
	}

	return false;
	}

	static bool test_stream_encoder()
	{
	StreamEncoder *encoder;
	FLAC__int32 samples[1024];
	FLAC__int32 *samples_array[1] = { samples };
	unsigned i;

	printf("\n+++ libOggFLAC++ unit test: OggFLAC::Encoder::Stream\n\n");

	printf("allocating encoder instance... ");
	encoder = new StreamEncoder();
	if(0 == encoder) {
	printf("FAILED, new returned NULL\n");
	return false;
	}
	printf("OK\n");

	printf("testing is_valid()... ");
	if(!encoder->is_valid()) {
	printf("FAILED, returned false\n");
	return false;
	}
	printf("OK\n");

	printf("testing set_verify()... ");
	if(!encoder->set_verify(true))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_streamable_subset()... ");
	if(!encoder->set_streamable_subset(true))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_do_mid_side_stereo()... ");
	if(!encoder->set_do_mid_side_stereo(false))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_loose_mid_side_stereo()... ");
	if(!encoder->set_loose_mid_side_stereo(false))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_channels()... ");
	if(!encoder->set_channels(streaminfo_.data.stream_info.channels))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_bits_per_sample()... ");
	if(!encoder->set_bits_per_sample(streaminfo_.data.stream_info.bits_per_sample))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_sample_rate()... ");
	if(!encoder->set_sample_rate(streaminfo_.data.stream_info.sample_rate))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_blocksize()... ");
	if(!encoder->set_blocksize(streaminfo_.data.stream_info.min_blocksize))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_max_lpc_order()... ");
	if(!encoder->set_max_lpc_order(0))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_qlp_coeff_precision()... ");
	if(!encoder->set_qlp_coeff_precision(0))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_do_qlp_coeff_prec_search()... ");
	if(!encoder->set_do_qlp_coeff_prec_search(false))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_do_escape_coding()... ");
	if(!encoder->set_do_escape_coding(false))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_do_exhaustive_model_search()... ");
	if(!encoder->set_do_exhaustive_model_search(false))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_min_residual_partition_order()... ");
	if(!encoder->set_min_residual_partition_order(0))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_max_residual_partition_order()... ");
	if(!encoder->set_max_residual_partition_order(0))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_rice_parameter_search_dist()... ");
	if(!encoder->set_rice_parameter_search_dist(0))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_total_samples_estimate()... ");
	if(!encoder->set_total_samples_estimate(streaminfo_.data.stream_info.total_samples))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing set_metadata()... ");
	if(!encoder->set_metadata(metadata_sequence_, num_metadata_))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing init()... ");
	if(encoder->init() != ::OggFLAC__STREAM_ENCODER_OK)
	return encoder->die();
	printf("OK\n");

	printf("testing get_state()... ");
	OggFLAC::Encoder::Stream::State state = encoder->get_state();
	printf("returned state = %u (%s)... OK\n", (unsigned)((::OggFLAC__StreamEncoderState)state), state.as_cstring());

	printf("testing get_FLAC_stream_encoder_state()... ");
	FLAC::Encoder::Stream::State state_ = encoder->get_FLAC_stream_encoder_state();
	printf("returned state = %u (%s)... OK\n", (unsigned)((::FLAC__StreamEncoderState)state_), state_.as_cstring());

	printf("testing get_verify_decoder_state()... ");
	FLAC::Decoder::Stream::State dstate = encoder->get_verify_decoder_state();
	printf("returned state = %u (%s)... OK\n", (unsigned)((::FLAC__StreamDecoderState)dstate), dstate.as_cstring());

	{
	FLAC__uint64 absolute_sample;
	unsigned frame_number;
	unsigned channel;
	unsigned sample;
	FLAC__int32 expected;
	FLAC__int32 got;

	printf("testing get_verify_decoder_error_stats()... ");
	encoder->get_verify_decoder_error_stats(&absolute_sample, &frame_number, &channel, &sample, &expected, &got);
	printf("OK\n");
	}

	printf("testing get_verify()... ");
	if(encoder->get_verify() != true) {
	printf("FAILED, expected true, got false\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_streamable_subset()... ");
	if(encoder->get_streamable_subset() != true) {
	printf("FAILED, expected true, got false\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_do_mid_side_stereo()... ");
	if(encoder->get_do_mid_side_stereo() != false) {
	printf("FAILED, expected false, got true\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_loose_mid_side_stereo()... ");
	if(encoder->get_loose_mid_side_stereo() != false) {
	printf("FAILED, expected false, got true\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_channels()... ");
	if(encoder->get_channels() != streaminfo_.data.stream_info.channels) {
	printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.channels, encoder->get_channels());
	return false;
	}
	printf("OK\n");

	printf("testing get_bits_per_sample()... ");
	if(encoder->get_bits_per_sample() != streaminfo_.data.stream_info.bits_per_sample) {
	printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.bits_per_sample, encoder->get_bits_per_sample());
	return false;
	}
	printf("OK\n");

	printf("testing get_sample_rate()... ");
	if(encoder->get_sample_rate() != streaminfo_.data.stream_info.sample_rate) {
	printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.sample_rate, encoder->get_sample_rate());
	return false;
	}
	printf("OK\n");

	printf("testing get_blocksize()... ");
	if(encoder->get_blocksize() != streaminfo_.data.stream_info.min_blocksize) {
	printf("FAILED, expected %u, got %u\n", streaminfo_.data.stream_info.min_blocksize, encoder->get_blocksize());
	return false;
	}
	printf("OK\n");

	printf("testing get_max_lpc_order()... ");
	if(encoder->get_max_lpc_order() != 0) {
	printf("FAILED, expected %u, got %u\n", 0, encoder->get_max_lpc_order());
	return false;
	}
	printf("OK\n");

	printf("testing get_qlp_coeff_precision()... ");
	(void)encoder->get_qlp_coeff_precision();
	/* we asked the encoder to auto select this so we accept anything */
	printf("OK\n");

	printf("testing get_do_qlp_coeff_prec_search()... ");
	if(encoder->get_do_qlp_coeff_prec_search() != false) {
	printf("FAILED, expected false, got true\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_do_escape_coding()... ");
	if(encoder->get_do_escape_coding() != false) {
	printf("FAILED, expected false, got true\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_do_exhaustive_model_search()... ");
	if(encoder->get_do_exhaustive_model_search() != false) {
	printf("FAILED, expected false, got true\n");
	return false;
	}
	printf("OK\n");

	printf("testing get_min_residual_partition_order()... ");
	if(encoder->get_min_residual_partition_order() != 0) {
	printf("FAILED, expected %u, got %u\n", 0, encoder->get_min_residual_partition_order());
	return false;
	}
	printf("OK\n");

	printf("testing get_max_residual_partition_order()... ");
	if(encoder->get_max_residual_partition_order() != 0) {
	printf("FAILED, expected %u, got %u\n", 0, encoder->get_max_residual_partition_order());
	return false;
	}
	printf("OK\n");

	printf("testing get_rice_parameter_search_dist()... ");
	if(encoder->get_rice_parameter_search_dist() != 0) {
	printf("FAILED, expected %u, got %u\n", 0, encoder->get_rice_parameter_search_dist());
	return false;
	}
	printf("OK\n");

	printf("testing get_total_samples_estimate()... ");
	if(encoder->get_total_samples_estimate() != streaminfo_.data.stream_info.total_samples) {
	printf("FAILED, expected %llu, got %llu\n", streaminfo_.data.stream_info.total_samples, encoder->get_total_samples_estimate());
	return false;
	}
	printf("OK\n");

	/* init the dummy sample buffer */
	for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
	samples[i] = i & 7;

	printf("testing process()... ");
	if(!encoder->process(samples_array, sizeof(samples) / sizeof(FLAC__int32)))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing process_interleaved()... ");
	if(!encoder->process_interleaved(samples, sizeof(samples) / sizeof(FLAC__int32)))
	return encoder->die("returned false");
	printf("OK\n");

	printf("testing finish()... ");
	encoder->finish();
	printf("OK\n");

	printf("freeing encoder instance... ");
	delete encoder;
	printf("OK\n");

	printf("\nPASSED!\n");

	return true;
	}

	bool test_encoders()
	{
	init_metadata_blocks_();

	if(!test_stream_encoder())
	return false;

	free_metadata_blocks_();

	return true;
	}