Differential D2716 Diff 9122 extern/audaspace/src/respec/JOSResampleReader.cpp

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extern/audaspace/src/respec/JOSResampleReader.cpp

This file was moved from intern/audaspace/intern/AUD_JOSResampleReader.cpp.

	/*	/*******************************************************************************
	* *** BEGIN GPL LICENSE BLOCK ***	* Copyright 2009-2016 Jörg Müller
	*	*
	* Copyright 2009-2011 Jörg Hermann Müller	* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
	*	*
	* This file is part of AudaSpace.	* http://www.apache.org/licenses/LICENSE-2.0
	*	*
	* Audaspace is free software; you can redistribute it and/or modify	* Unless required by applicable law or agreed to in writing, software
	* it under the terms of the GNU General Public License as published by	* distributed under the License is distributed on an "AS IS" BASIS,
	* the Free Software Foundation; either version 2 of the License, or	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* (at your option) any later version.	* See the License for the specific language governing permissions and
	*	* limitations under the License.
	* AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	*
	* *** END GPL LICENSE BLOCK ***
	*/

	/** \file audaspace/intern/AUD_JOSResampleReader.cpp
	* \ingroup audaspaceintern
	*/

	#include "AUD_JOSResampleReader.h"	#include "respec/JOSResampleReader.h"

	#include "AUD_JOSResampleReaderCoeff.cpp"

		#include <algorithm>
	#include <cmath>	#include <cmath>
	#include <cstring>	#include <cstring>
	#include <iostream>

	/* MSVC does not have lrint */
	#ifdef _MSC_VER
	#if _MSC_VER < 1800
	#ifdef _M_X64
	#include <emmintrin.h>
	static inline int lrint(double d)
	{
	return _mm_cvtsd_si32(_mm_load_sd(&d));
	}
	#else
	static inline int lrint(double d)
	{
	int i;

	_asm{
	fld d
	fistp i
	};

	return i;
	}
	#endif
	#endif
	#endif

	// UNUSED	#define RATE_MAX 256
	// #define CC m_channels + channel

	#define AUD_RATE_MAX 256
	#define SHIFT_BITS 12	#define SHIFT_BITS 12
	#define double_to_fp(x) (lrint(x * double(1 << SHIFT_BITS)))	#define double_to_fp(x) (lrint(x * double(1 << SHIFT_BITS)))
	#define int_to_fp(x) (x << SHIFT_BITS)	#define int_to_fp(x) (x << SHIFT_BITS)
Context not available.
	#define fp_rest(x) (x & ((1 << SHIFT_BITS) - 1))	#define fp_rest(x) (x & ((1 << SHIFT_BITS) - 1))
	#define fp_rest_to_double(x) fp_to_double(fp_rest(x))	#define fp_rest_to_double(x) fp_to_double(fp_rest(x))

	AUD_JOSResampleReader::AUD_JOSResampleReader(boost::shared_ptr<AUD_IReader> reader, AUD_Specs specs) :	AUD_NAMESPACE_BEGIN
	AUD_ResampleReader(reader, specs.rate),
	m_channels(AUD_CHANNELS_INVALID),	JOSResampleReader::JOSResampleReader(std::shared_ptr<IReader> reader, SampleRate rate) :
		ResampleReader(reader, rate),
		m_channels(CHANNELS_INVALID),
	m_n(0),	m_n(0),
	m_P(0),	m_P(0),
	m_cache_valid(0),	m_cache_valid(0),
Context not available.
	{	{
	}	}

	void AUD_JOSResampleReader::reset()	void JOSResampleReader::reset()
	{	{
	m_cache_valid = 0;	m_cache_valid = 0;
	m_n = 0;	m_n = 0;
Context not available.
	m_last_factor = 0;	m_last_factor = 0;
	}	}

	void AUD_JOSResampleReader::updateBuffer(int size, double factor, int samplesize)	void JOSResampleReader::updateBuffer(int size, double factor, int samplesize)
	{	{
	unsigned int len;	unsigned int len;
	double num_samples = double(m_len) / double(m_L);	double num_samples = double(m_len) / double(m_L);
	// first calculate what length we need right now	// first calculate what length we need right now
	if(factor >= 1)	if(factor >= 1)
	len = ceil(num_samples);	len = std::ceil(num_samples);
	else	else
	len = (unsigned int)(ceil(num_samples / factor));	len = (unsigned int)(std::ceil(num_samples / factor));

	// then check if afterwards the length is enough for the maximum rate	// then check if afterwards the length is enough for the maximum rate
	if(len + size < num_samples * AUD_RATE_MAX)	if(len + size < num_samples * RATE_MAX)
	len = num_samples * AUD_RATE_MAX - size;	len = num_samples * RATE_MAX - size;

	if(m_n > len)	if(m_n > len)
	{	{
	sample_t* buf = m_buffer.getBuffer();	sample_t* buf = m_buffer.getBuffer();
	len = m_n - len;	len = m_n - len;
	memmove(buf, buf + len * m_channels, (m_cache_valid - len) * samplesize);	std::memmove(buf, buf + len * m_channels, (m_cache_valid - len) * samplesize);
	m_n -= len;	m_n -= len;
	m_cache_valid -= len;	m_cache_valid -= len;
	}	}
Context not available.
	m_buffer.assureSize((m_cache_valid + size) * samplesize, true);	m_buffer.assureSize((m_cache_valid + size) * samplesize, true);
	}	}

	#define RESAMPLE_METHOD(name, left, right) void AUD_JOSResampleReader::name(double target_factor, int length, sample_t* buffer)\	#define RESAMPLE_METHOD(name, left, right) void JOSResampleReader::name(double target_factor, int length, sample_t* buffer)\
	{\	{\
	sample_t* buf = m_buffer.getBuffer();\	sample_t* buf = m_buffer.getBuffer();\
	\	\
Context not available.
	{\	{\
	factor = (m_last_factor * (length - t - 1) + target_factor * (t + 1)) / length;\	factor = (m_last_factor * (length - t - 1) + target_factor * (t + 1)) / length;\
	\	\
	memset(sums, 0, sizeof(double) * m_channels);\	std::memset(sums, 0, sizeof(double) * m_channels);\
	\	\
	if(factor >= 1)\	if(factor >= 1)\
	{\	{\
	P = double_to_fp(m_P * m_L);\	P = double_to_fp(m_P * m_L);\
	\	\
	end = floor(m_len / double(m_L) - m_P) - 1;\	end = std::floor(m_len / double(m_L) - m_P) - 1;\
	if(m_n < end)\	if(m_n < end)\
	end = m_n;\	end = m_n;\
	\	\
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	\	\
	P = int_to_fp(m_L) - P;\	P = int_to_fp(m_L) - P;\
	\	\
	end = floor((m_len - 1) / double(m_L) + m_P) - 1;\	end = std::floor((m_len - 1) / double(m_L) + m_P) - 1;\
	if(m_cache_valid - m_n - 2 < end)\	if(m_cache_valid - m_n - 2 < end)\
	end = m_cache_valid - m_n - 2;\	end = m_cache_valid - m_n - 2;\
	\	\
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	\	\
	for(channel = 0; channel < m_channels; channel++)\	for(channel = 0; channel < m_channels; channel++)\
	{\	{\
	buffer = factor sums[channel];\	buffer = factor sums[channel];\
	buffer++;\	buffer++;\
	}\	}\
	}\	}\
	\	\
	m_P += fmod(1.0 / factor, 1.0);\	m_P += std::fmod(1.0 / factor, 1.0);\
	m_n += floor(1.0 / factor);\	m_n += std::floor(1.0 / factor);\
	\	\
	while(m_P >= 1.0)\	while(m_P >= 1.0)\
	{\	{\
Context not available.
	sums[1] += data[2] * v;	sums[1] += data[2] * v;
	})	})

	void AUD_JOSResampleReader::seek(int position)	void JOSResampleReader::seek(int position)
	{	{
	position = floor(position * double(m_reader->getSpecs().rate) / double(m_rate));	position = std::floor(position * double(m_reader->getSpecs().rate) / double(m_rate));
	m_reader->seek(position);	m_reader->seek(position);
	reset();	reset();
	}	}

	int AUD_JOSResampleReader::getLength() const	int JOSResampleReader::getLength() const
	{	{
	return floor(m_reader->getLength() * double(m_rate) / double(m_reader->getSpecs().rate));	return std::floor(m_reader->getLength() * double(m_rate) / double(m_reader->getSpecs().rate));
	}	}

	int AUD_JOSResampleReader::getPosition() const	int JOSResampleReader::getPosition() const
	{	{
	return floor((m_reader->getPosition() + double(m_P))	return std::floor((m_reader->getPosition() + double(m_P)) * m_rate / m_reader->getSpecs().rate);
	* m_rate / m_reader->getSpecs().rate);
	}	}

	AUD_Specs AUD_JOSResampleReader::getSpecs() const	Specs JOSResampleReader::getSpecs() const
	{	{
	AUD_Specs specs = m_reader->getSpecs();	Specs specs = m_reader->getSpecs();
	specs.rate = m_rate;	specs.rate = m_rate;
	return specs;	return specs;
	}	}

	void AUD_JOSResampleReader::read(int& length, bool& eos, sample_t* buffer)	void JOSResampleReader::read(int& length, bool& eos, sample_t* buffer)
	{	{
	if(length == 0)	if(length == 0)
	return;	return;

	AUD_Specs specs = m_reader->getSpecs();	Specs specs = m_reader->getSpecs();

	int samplesize = AUD_SAMPLE_SIZE(specs);	int samplesize = AUD_SAMPLE_SIZE(specs);
	double target_factor = double(m_rate) / double(specs.rate);	double target_factor = double(m_rate) / double(specs.rate);
Context not available.

	switch(m_channels)	switch(m_channels)
	{	{
	case AUD_CHANNELS_MONO:	case CHANNELS_MONO:
	m_resample = &AUD_JOSResampleReader::resample_mono;	m_resample = &JOSResampleReader::resample_mono;
	break;	break;
	case AUD_CHANNELS_STEREO:	case CHANNELS_STEREO:
	m_resample = &AUD_JOSResampleReader::resample_stereo;	m_resample = &JOSResampleReader::resample_stereo;
	break;	break;
	default:	default:
	m_resample = &AUD_JOSResampleReader::resample;	m_resample = &JOSResampleReader::resample;
	break;	break;
	}	}
	}	}
Context not available.

	if(length > 0)	if(length > 0)
	{	{
	memcpy(buffer, buf + m_n * m_channels, length * samplesize);	std::memcpy(buffer, buf + m_n * m_channels, length * samplesize);
	m_n += length;	m_n += length;
	}	}

Context not available.
	}	}

	// use minimum for the following calculations	// use minimum for the following calculations
	double factor = AUD_MIN(target_factor, m_last_factor);	double factor = std::min(target_factor, m_last_factor);

	if(factor >= 1)	if(factor >= 1)
	len = (int(m_n) - m_cache_valid) + int(ceil(length / factor)) + ceil(num_samples);	len = (int(m_n) - m_cache_valid) + int(std::ceil(length / factor)) + std::ceil(num_samples);
	else	else
	len = (int(m_n) - m_cache_valid) + int(ceil(length / factor) + ceil(num_samples / factor));	len = (int(m_n) - m_cache_valid) + int(std::ceil(length / factor) + std::ceil(num_samples / factor));

	if(len > 0)	if(len > 0)
	{	{
Context not available.
	else	else
	{	{
	// use maximum for the following calculations	// use maximum for the following calculations
	factor = AUD_MAX(target_factor, m_last_factor);	factor = std::max(target_factor, m_last_factor);

	if(eos)	if(eos)
	{	{
	// end of stream, let's check how many more samples we can produce	// end of stream, let's check how many more samples we can produce
	len = floor((m_cache_valid - m_n) * factor);	len = std::floor((m_cache_valid - m_n) * factor);
	if(len < length)	if(len < length)
	length = len;	length = len;
	}	}
	else	else
	{	{
	// not enough data available yet, so we recalculate how many samples we can calculate	// not enough data available yet, so we recalculate how many samples we can calculate
	if(factor >= 1)	if(factor >= 1)
	len = floor((num_samples + m_cache_valid - m_n) * factor);	len = std::floor((num_samples + m_cache_valid - m_n) * factor);
	else	else
	len = floor((num_samples * factor + m_cache_valid - m_n) * factor);	len = std::floor((num_samples * factor + m_cache_valid - m_n) * factor);
	if(len < length)	if(len < length)
	length = len;	length = len;
	}	}
Context not available.

	eos = eos && ((m_n == m_cache_valid) \|\| (length == 0));	eos = eos && ((m_n == m_cache_valid) \|\| (length == 0));
	}	}

		AUD_NAMESPACE_END
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