mirror of
https://github.com/DrBeef/Quake2Quest.git
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822 lines
41 KiB
C
822 lines
41 KiB
C
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include "alMain.h"
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#include "AL/al.h"
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#include "AL/alc.h"
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#include "alSource.h"
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#include "alBuffer.h"
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#include "alListener.h"
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#include "alAuxEffectSlot.h"
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#include "alu.h"
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#include "bs2b.h"
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static __inline ALfloat point32(const ALfloat *vals, ALint step, ALint frac)
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{ return vals[0]; (void)step; (void)frac; }
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static __inline ALfloat lerp32(const ALfloat *vals, ALint step, ALint frac)
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{ return lerp(vals[0], vals[step], frac * (1.0f/FRACTIONONE)); }
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static __inline ALfloat cubic32(const ALfloat *vals, ALint step, ALint frac)
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{ return cubic(vals[-step], vals[0], vals[step], vals[step+step],
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frac * (1.0f/FRACTIONONE)); }
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#ifdef __GNUC__
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#define LIKELY(x) __builtin_expect(!!(x), 1)
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#define UNLIKELY(x) __builtin_expect(!!(x), 0)
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#else
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#define LIKELY(x) (x)
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#define UNLIKELY(x) (x)
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#endif
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#if defined(__ARM_NEON__) && defined(HAVE_ARM_NEON_H)
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#include <arm_neon.h>
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static __inline void ApplyCoeffs(ALuint Offset, ALfloat (*RESTRICT Values)[2],
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ALfloat (*RESTRICT Coeffs)[2],
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ALfloat left, ALfloat right)
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{
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ALuint c;
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float32x4_t leftright4;
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{
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float32x2_t leftright2 = vdup_n_f32(0.0);
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leftright2 = vset_lane_f32(left, leftright2, 0);
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leftright2 = vset_lane_f32(right, leftright2, 1);
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leftright4 = vcombine_f32(leftright2, leftright2);
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}
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for(c = 0;c < HRIR_LENGTH;c += 2)
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{
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const ALuint o0 = (Offset+c)&HRIR_MASK;
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const ALuint o1 = (o0+1)&HRIR_MASK;
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float32x4_t vals = vcombine_f32(vld1_f32((float32_t*)&Values[o0][0]),
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vld1_f32((float32_t*)&Values[o1][0]));
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float32x4_t coefs = vld1q_f32((float32_t*)&Coeffs[c][0]);
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vals = vmlaq_f32(vals, coefs, leftright4);
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vst1_f32((float32_t*)&Values[o0][0], vget_low_f32(vals));
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vst1_f32((float32_t*)&Values[o1][0], vget_high_f32(vals));
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}
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}
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#else
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static __inline void ApplyCoeffs(ALuint Offset, ALfloat (*RESTRICT Values)[2],
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ALfloat (*RESTRICT Coeffs)[2],
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ALfloat left, ALfloat right)
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{
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ALuint c;
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for(c = 0;c < HRIR_LENGTH;c++)
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{
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const ALuint off = (Offset+c)&HRIR_MASK;
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Values[off][0] += Coeffs[c][0] * left;
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Values[off][1] += Coeffs[c][1] * right;
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}
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}
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#endif
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#define DECL_TEMPLATE(T, sampler) \
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static void Mix_Hrtf_##T##_##sampler(ALsource *Source, ALCdevice *Device, \
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const ALvoid *srcdata, ALuint *DataPosInt, ALuint *DataPosFrac, \
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ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize) \
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{ \
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const ALuint NumChannels = Source->NumChannels; \
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const T *RESTRICT data = srcdata; \
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const ALint *RESTRICT DelayStep = Source->Params.HrtfDelayStep; \
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ALfloat (*RESTRICT DryBuffer)[MAXCHANNELS]; \
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ALfloat *RESTRICT ClickRemoval, *RESTRICT PendingClicks; \
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ALfloat (*RESTRICT CoeffStep)[2] = Source->Params.HrtfCoeffStep; \
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ALuint pos, frac; \
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FILTER *DryFilter; \
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ALuint BufferIdx; \
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ALuint increment; \
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ALuint i, out, c; \
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ALfloat value; \
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\
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increment = Source->Params.Step; \
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\
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DryBuffer = Device->DryBuffer; \
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ClickRemoval = Device->ClickRemoval; \
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PendingClicks = Device->PendingClicks; \
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DryFilter = &Source->Params.iirFilter; \
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\
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pos = 0; \
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frac = *DataPosFrac; \
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\
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for(i = 0;i < NumChannels;i++) \
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{ \
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ALfloat (*RESTRICT TargetCoeffs)[2] = Source->Params.HrtfCoeffs[i]; \
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ALuint *RESTRICT TargetDelay = Source->Params.HrtfDelay[i]; \
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ALfloat *RESTRICT History = Source->HrtfHistory[i]; \
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ALfloat (*RESTRICT Values)[2] = Source->HrtfValues[i]; \
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ALint Counter = maxu(Source->HrtfCounter, OutPos) - OutPos; \
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ALuint Offset = Source->HrtfOffset + OutPos; \
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ALfloat Coeffs[HRIR_LENGTH][2]; \
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ALuint Delay[2]; \
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ALfloat left, right; \
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\
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pos = 0; \
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frac = *DataPosFrac; \
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\
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for(c = 0;c < HRIR_LENGTH;c++) \
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{ \
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Coeffs[c][0] = TargetCoeffs[c][0] - (CoeffStep[c][0]*Counter); \
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Coeffs[c][1] = TargetCoeffs[c][1] - (CoeffStep[c][1]*Counter); \
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} \
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\
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Delay[0] = TargetDelay[0] - (DelayStep[0]*Counter) + 32768; \
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Delay[1] = TargetDelay[1] - (DelayStep[1]*Counter) + 32768; \
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\
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if(LIKELY(OutPos == 0)) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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value = lpFilter2PC(DryFilter, i, value); \
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\
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History[Offset&SRC_HISTORY_MASK] = value; \
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left = History[(Offset-(Delay[0]>>16))&SRC_HISTORY_MASK]; \
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right = History[(Offset-(Delay[1]>>16))&SRC_HISTORY_MASK]; \
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\
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ClickRemoval[FRONT_LEFT] -= Values[(Offset+1)&HRIR_MASK][0] + \
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Coeffs[0][0] * left; \
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ClickRemoval[FRONT_RIGHT] -= Values[(Offset+1)&HRIR_MASK][1] + \
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Coeffs[0][1] * right; \
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} \
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for(BufferIdx = 0;BufferIdx < BufferSize && Counter > 0;BufferIdx++) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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value = lpFilter2P(DryFilter, i, value); \
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\
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History[Offset&SRC_HISTORY_MASK] = value; \
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left = History[(Offset-(Delay[0]>>16))&SRC_HISTORY_MASK]; \
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right = History[(Offset-(Delay[1]>>16))&SRC_HISTORY_MASK]; \
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\
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Delay[0] += DelayStep[0]; \
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Delay[1] += DelayStep[1]; \
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\
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Values[Offset&HRIR_MASK][0] = 0.0f; \
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Values[Offset&HRIR_MASK][1] = 0.0f; \
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Offset++; \
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\
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for(c = 0;c < HRIR_LENGTH;c++) \
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{ \
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const ALuint off = (Offset+c)&HRIR_MASK; \
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Values[off][0] += Coeffs[c][0] * left; \
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Values[off][1] += Coeffs[c][1] * right; \
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Coeffs[c][0] += CoeffStep[c][0]; \
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Coeffs[c][1] += CoeffStep[c][1]; \
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} \
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\
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DryBuffer[OutPos][FRONT_LEFT] += Values[Offset&HRIR_MASK][0]; \
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DryBuffer[OutPos][FRONT_RIGHT] += Values[Offset&HRIR_MASK][1]; \
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\
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frac += increment; \
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pos += frac>>FRACTIONBITS; \
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frac &= FRACTIONMASK; \
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OutPos++; \
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Counter--; \
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} \
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\
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Delay[0] >>= 16; \
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Delay[1] >>= 16; \
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for(;BufferIdx < BufferSize;BufferIdx++) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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value = lpFilter2P(DryFilter, i, value); \
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\
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History[Offset&SRC_HISTORY_MASK] = value; \
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left = History[(Offset-Delay[0])&SRC_HISTORY_MASK]; \
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right = History[(Offset-Delay[1])&SRC_HISTORY_MASK]; \
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\
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Values[Offset&HRIR_MASK][0] = 0.0f; \
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Values[Offset&HRIR_MASK][1] = 0.0f; \
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Offset++; \
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\
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ApplyCoeffs(Offset, Values, Coeffs, left, right); \
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DryBuffer[OutPos][FRONT_LEFT] += Values[Offset&HRIR_MASK][0]; \
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DryBuffer[OutPos][FRONT_RIGHT] += Values[Offset&HRIR_MASK][1]; \
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\
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frac += increment; \
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pos += frac>>FRACTIONBITS; \
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frac &= FRACTIONMASK; \
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OutPos++; \
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} \
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if(LIKELY(OutPos == SamplesToDo)) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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value = lpFilter2PC(DryFilter, i, value); \
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\
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History[Offset&SRC_HISTORY_MASK] = value; \
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left = History[(Offset-Delay[0])&SRC_HISTORY_MASK]; \
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right = History[(Offset-Delay[1])&SRC_HISTORY_MASK]; \
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\
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PendingClicks[FRONT_LEFT] += Values[(Offset+1)&HRIR_MASK][0] + \
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Coeffs[0][0] * left; \
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PendingClicks[FRONT_RIGHT] += Values[(Offset+1)&HRIR_MASK][1] + \
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Coeffs[0][1] * right; \
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} \
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OutPos -= BufferSize; \
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} \
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\
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for(out = 0;out < Device->NumAuxSends;out++) \
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{ \
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ALeffectslot *Slot = Source->Params.Send[out].Slot; \
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ALfloat WetSend; \
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ALfloat *RESTRICT WetBuffer; \
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ALfloat *RESTRICT WetClickRemoval; \
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ALfloat *RESTRICT WetPendingClicks; \
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FILTER *WetFilter; \
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\
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if(Slot == NULL) \
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continue; \
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\
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WetBuffer = Slot->WetBuffer; \
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WetClickRemoval = Slot->ClickRemoval; \
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WetPendingClicks = Slot->PendingClicks; \
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WetFilter = &Source->Params.Send[out].iirFilter; \
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WetSend = Source->Params.Send[out].WetGain; \
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\
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for(i = 0;i < NumChannels;i++) \
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{ \
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pos = 0; \
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frac = *DataPosFrac; \
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\
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if(LIKELY(OutPos == 0)) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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value = lpFilter1PC(WetFilter, i, value); \
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\
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WetClickRemoval[0] -= value * WetSend; \
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} \
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for(BufferIdx = 0;BufferIdx < BufferSize;BufferIdx++) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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value = lpFilter1P(WetFilter, i, value); \
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\
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WetBuffer[OutPos] += value * WetSend; \
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\
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frac += increment; \
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pos += frac>>FRACTIONBITS; \
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frac &= FRACTIONMASK; \
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OutPos++; \
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} \
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if(LIKELY(OutPos == SamplesToDo)) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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value = lpFilter1PC(WetFilter, i, value); \
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\
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WetPendingClicks[0] += value * WetSend; \
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} \
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OutPos -= BufferSize; \
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} \
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} \
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*DataPosInt += pos; \
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*DataPosFrac = frac; \
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}
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DECL_TEMPLATE(ALfloat, point32)
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DECL_TEMPLATE(ALfloat, lerp32)
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DECL_TEMPLATE(ALfloat, cubic32)
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#undef DECL_TEMPLATE
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#define DECL_TEMPLATE(T, sampler) \
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static void Mix_##T##_##sampler(ALsource *Source, ALCdevice *Device, \
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const ALvoid *srcdata, ALuint *DataPosInt, ALuint *DataPosFrac, \
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ALuint OutPos, ALuint SamplesToDo, ALuint BufferSize) \
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{ \
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const ALuint NumChannels = Source->NumChannels; \
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const T *RESTRICT data = srcdata; \
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ALfloat (*RESTRICT DryBuffer)[MAXCHANNELS]; \
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ALfloat *RESTRICT ClickRemoval, *RESTRICT PendingClicks; \
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ALfloat DrySend[MAXCHANNELS]; \
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FILTER *DryFilter; \
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ALuint pos, frac; \
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ALuint BufferIdx; \
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ALuint increment; \
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ALuint i, out, c; \
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ALfloat value; \
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\
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increment = Source->Params.Step; \
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\
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DryBuffer = Device->DryBuffer; \
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ClickRemoval = Device->ClickRemoval; \
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PendingClicks = Device->PendingClicks; \
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DryFilter = &Source->Params.iirFilter; \
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\
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pos = 0; \
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frac = *DataPosFrac; \
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\
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for(i = 0;i < NumChannels;i++) \
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{ \
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for(c = 0;c < MAXCHANNELS;c++) \
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DrySend[c] = Source->Params.DryGains[i][c]; \
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\
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pos = 0; \
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frac = *DataPosFrac; \
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\
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if(OutPos == 0) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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\
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value = lpFilter2PC(DryFilter, i, value); \
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for(c = 0;c < MAXCHANNELS;c++) \
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ClickRemoval[c] -= value*DrySend[c]; \
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} \
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for(BufferIdx = 0;BufferIdx < BufferSize;BufferIdx++) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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\
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value = lpFilter2P(DryFilter, i, value); \
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for(c = 0;c < MAXCHANNELS;c++) \
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DryBuffer[OutPos][c] += value*DrySend[c]; \
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\
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frac += increment; \
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pos += frac>>FRACTIONBITS; \
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frac &= FRACTIONMASK; \
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OutPos++; \
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} \
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if(OutPos == SamplesToDo) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels, frac); \
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\
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value = lpFilter2PC(DryFilter, i, value); \
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for(c = 0;c < MAXCHANNELS;c++) \
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PendingClicks[c] += value*DrySend[c]; \
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} \
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OutPos -= BufferSize; \
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} \
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\
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for(out = 0;out < Device->NumAuxSends;out++) \
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{ \
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ALeffectslot *Slot = Source->Params.Send[out].Slot; \
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ALfloat WetSend; \
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ALfloat *WetBuffer; \
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ALfloat *WetClickRemoval; \
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ALfloat *WetPendingClicks; \
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FILTER *WetFilter; \
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\
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if(Slot == NULL) \
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continue; \
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\
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WetBuffer = Slot->WetBuffer; \
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WetClickRemoval = Slot->ClickRemoval; \
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WetPendingClicks = Slot->PendingClicks; \
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WetFilter = &Source->Params.Send[out].iirFilter; \
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WetSend = Source->Params.Send[out].WetGain; \
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\
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for(i = 0;i < NumChannels;i++) \
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{ \
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pos = 0; \
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frac = *DataPosFrac; \
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\
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if(OutPos == 0) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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\
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value = lpFilter1PC(WetFilter, i, value); \
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WetClickRemoval[0] -= value * WetSend; \
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} \
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for(BufferIdx = 0;BufferIdx < BufferSize;BufferIdx++) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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\
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value = lpFilter1P(WetFilter, i, value); \
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WetBuffer[OutPos] += value * WetSend; \
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\
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frac += increment; \
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pos += frac>>FRACTIONBITS; \
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frac &= FRACTIONMASK; \
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OutPos++; \
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} \
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if(OutPos == SamplesToDo) \
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{ \
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value = sampler(data + pos*NumChannels + i, NumChannels,frac);\
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\
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value = lpFilter1PC(WetFilter, i, value); \
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WetPendingClicks[0] += value * WetSend; \
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} \
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OutPos -= BufferSize; \
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} \
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} \
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*DataPosInt += pos; \
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*DataPosFrac = frac; \
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}
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DECL_TEMPLATE(ALfloat, point32)
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DECL_TEMPLATE(ALfloat, lerp32)
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DECL_TEMPLATE(ALfloat, cubic32)
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|
|
#undef DECL_TEMPLATE
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|
|
|
|
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MixerFunc SelectMixer(enum Resampler Resampler)
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{
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switch(Resampler)
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{
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case PointResampler:
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return Mix_ALfloat_point32;
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case LinearResampler:
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return Mix_ALfloat_lerp32;
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case CubicResampler:
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return Mix_ALfloat_cubic32;
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case ResamplerMax:
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break;
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}
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return NULL;
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}
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MixerFunc SelectHrtfMixer(enum Resampler Resampler)
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|
{
|
|
switch(Resampler)
|
|
{
|
|
case PointResampler:
|
|
return Mix_Hrtf_ALfloat_point32;
|
|
case LinearResampler:
|
|
return Mix_Hrtf_ALfloat_lerp32;
|
|
case CubicResampler:
|
|
return Mix_Hrtf_ALfloat_cubic32;
|
|
case ResamplerMax:
|
|
break;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
static __inline ALfloat Sample_ALbyte(ALbyte val)
|
|
{ return val * (1.0f/127.0f); }
|
|
|
|
static __inline ALfloat Sample_ALshort(ALshort val)
|
|
{ return val * (1.0f/32767.0f); }
|
|
|
|
static __inline ALfloat Sample_ALfloat(ALfloat val)
|
|
{ return val; }
|
|
|
|
#define DECL_TEMPLATE(T) \
|
|
static void Load_##T(ALfloat *dst, const T *src, ALuint samples) \
|
|
{ \
|
|
ALuint i; \
|
|
for(i = 0;i < samples;i++) \
|
|
dst[i] = Sample_##T(src[i]); \
|
|
}
|
|
|
|
DECL_TEMPLATE(ALbyte)
|
|
DECL_TEMPLATE(ALshort)
|
|
DECL_TEMPLATE(ALfloat)
|
|
|
|
#undef DECL_TEMPLATE
|
|
|
|
static void LoadStack(ALfloat *dst, const ALvoid *src, enum FmtType srctype, ALuint samples)
|
|
{
|
|
switch(srctype)
|
|
{
|
|
case FmtByte:
|
|
Load_ALbyte(dst, src, samples);
|
|
break;
|
|
case FmtShort:
|
|
Load_ALshort(dst, src, samples);
|
|
break;
|
|
case FmtFloat:
|
|
Load_ALfloat(dst, src, samples);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void SilenceStack(ALfloat *dst, ALuint samples)
|
|
{
|
|
ALuint i;
|
|
for(i = 0;i < samples;i++)
|
|
dst[i] = 0.0f;
|
|
}
|
|
|
|
|
|
ALvoid MixSource(ALsource *Source, ALCdevice *Device, ALuint SamplesToDo)
|
|
{
|
|
ALbufferlistitem *BufferListItem;
|
|
ALuint DataPosInt, DataPosFrac;
|
|
ALuint BuffersPlayed;
|
|
ALboolean Looping;
|
|
ALuint increment;
|
|
enum Resampler Resampler;
|
|
ALenum State;
|
|
ALuint OutPos;
|
|
ALuint NumChannels;
|
|
ALuint FrameSize;
|
|
ALint64 DataSize64;
|
|
ALuint i;
|
|
|
|
/* Get source info */
|
|
State = Source->state;
|
|
BuffersPlayed = Source->BuffersPlayed;
|
|
DataPosInt = Source->position;
|
|
DataPosFrac = Source->position_fraction;
|
|
Looping = Source->bLooping;
|
|
increment = Source->Params.Step;
|
|
Resampler = Source->Resampler;
|
|
NumChannels = Source->NumChannels;
|
|
FrameSize = NumChannels * Source->SampleSize;
|
|
|
|
/* Get current buffer queue item */
|
|
BufferListItem = Source->queue;
|
|
for(i = 0;i < BuffersPlayed;i++)
|
|
BufferListItem = BufferListItem->next;
|
|
|
|
OutPos = 0;
|
|
do {
|
|
const ALuint BufferPrePadding = ResamplerPrePadding[Resampler];
|
|
const ALuint BufferPadding = ResamplerPadding[Resampler];
|
|
ALfloat StackData[STACK_DATA_SIZE/sizeof(ALfloat)];
|
|
ALfloat *SrcData = StackData;
|
|
ALuint SrcDataSize = 0;
|
|
ALuint BufferSize;
|
|
|
|
/* Figure out how many buffer bytes will be needed */
|
|
DataSize64 = SamplesToDo-OutPos+1;
|
|
DataSize64 *= increment;
|
|
DataSize64 += DataPosFrac+FRACTIONMASK;
|
|
DataSize64 >>= FRACTIONBITS;
|
|
DataSize64 += BufferPadding+BufferPrePadding;
|
|
DataSize64 *= NumChannels;
|
|
|
|
BufferSize = (ALuint)mini64(DataSize64, STACK_DATA_SIZE/sizeof(ALfloat));
|
|
BufferSize /= NumChannels;
|
|
|
|
if(Source->lSourceType == AL_STATIC)
|
|
{
|
|
const ALbuffer *ALBuffer = Source->queue->buffer;
|
|
const ALubyte *Data = ALBuffer->data;
|
|
ALuint DataSize;
|
|
ALuint pos;
|
|
|
|
/* If current pos is beyond the loop range, do not loop */
|
|
if(Looping == AL_FALSE || DataPosInt >= (ALuint)ALBuffer->LoopEnd)
|
|
{
|
|
Looping = AL_FALSE;
|
|
|
|
if(DataPosInt >= BufferPrePadding)
|
|
pos = DataPosInt - BufferPrePadding;
|
|
else
|
|
{
|
|
DataSize = BufferPrePadding - DataPosInt;
|
|
DataSize = minu(BufferSize, DataSize);
|
|
|
|
SilenceStack(&SrcData[SrcDataSize*NumChannels],
|
|
DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
|
|
pos = 0;
|
|
}
|
|
|
|
/* Copy what's left to play in the source buffer, and clear the
|
|
* rest of the temp buffer */
|
|
DataSize = ALBuffer->SampleLen - pos;
|
|
DataSize = minu(BufferSize, DataSize);
|
|
|
|
LoadStack(&SrcData[SrcDataSize*NumChannels], &Data[pos*FrameSize],
|
|
ALBuffer->FmtType, DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
|
|
SilenceStack(&SrcData[SrcDataSize*NumChannels],
|
|
BufferSize*NumChannels);
|
|
SrcDataSize += BufferSize;
|
|
BufferSize -= BufferSize;
|
|
}
|
|
else
|
|
{
|
|
ALuint LoopStart = ALBuffer->LoopStart;
|
|
ALuint LoopEnd = ALBuffer->LoopEnd;
|
|
|
|
if(DataPosInt >= LoopStart)
|
|
{
|
|
pos = DataPosInt-LoopStart;
|
|
while(pos < BufferPrePadding)
|
|
pos += LoopEnd-LoopStart;
|
|
pos -= BufferPrePadding;
|
|
pos += LoopStart;
|
|
}
|
|
else if(DataPosInt >= BufferPrePadding)
|
|
pos = DataPosInt - BufferPrePadding;
|
|
else
|
|
{
|
|
DataSize = BufferPrePadding - DataPosInt;
|
|
DataSize = minu(BufferSize, DataSize);
|
|
|
|
SilenceStack(&SrcData[SrcDataSize*NumChannels], DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
|
|
pos = 0;
|
|
}
|
|
|
|
/* Copy what's left of this loop iteration, then copy repeats
|
|
* of the loop section */
|
|
DataSize = LoopEnd - pos;
|
|
DataSize = minu(BufferSize, DataSize);
|
|
|
|
LoadStack(&SrcData[SrcDataSize*NumChannels], &Data[pos*FrameSize],
|
|
ALBuffer->FmtType, DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
|
|
DataSize = LoopEnd-LoopStart;
|
|
while(BufferSize > 0)
|
|
{
|
|
DataSize = minu(BufferSize, DataSize);
|
|
|
|
LoadStack(&SrcData[SrcDataSize*NumChannels], &Data[LoopStart*FrameSize],
|
|
ALBuffer->FmtType, DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Crawl the buffer queue to fill in the temp buffer */
|
|
ALbufferlistitem *tmpiter = BufferListItem;
|
|
ALuint pos;
|
|
|
|
if(DataPosInt >= BufferPrePadding)
|
|
pos = DataPosInt - BufferPrePadding;
|
|
else
|
|
{
|
|
pos = BufferPrePadding - DataPosInt;
|
|
while(pos > 0)
|
|
{
|
|
if(!tmpiter->prev && !Looping)
|
|
{
|
|
ALuint DataSize = minu(BufferSize, pos);
|
|
|
|
SilenceStack(&SrcData[SrcDataSize*NumChannels], DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
|
|
pos = 0;
|
|
break;
|
|
}
|
|
|
|
if(tmpiter->prev)
|
|
tmpiter = tmpiter->prev;
|
|
else
|
|
{
|
|
while(tmpiter->next)
|
|
tmpiter = tmpiter->next;
|
|
}
|
|
|
|
if(tmpiter->buffer)
|
|
{
|
|
if((ALuint)tmpiter->buffer->SampleLen > pos)
|
|
{
|
|
pos = tmpiter->buffer->SampleLen - pos;
|
|
break;
|
|
}
|
|
pos -= tmpiter->buffer->SampleLen;
|
|
}
|
|
}
|
|
}
|
|
|
|
while(tmpiter && BufferSize > 0)
|
|
{
|
|
const ALbuffer *ALBuffer;
|
|
if((ALBuffer=tmpiter->buffer) != NULL)
|
|
{
|
|
const ALubyte *Data = ALBuffer->data;
|
|
ALuint DataSize = ALBuffer->SampleLen;
|
|
|
|
/* Skip the data already played */
|
|
if(DataSize <= pos)
|
|
pos -= DataSize;
|
|
else
|
|
{
|
|
Data += pos*FrameSize;
|
|
DataSize -= pos;
|
|
pos -= pos;
|
|
|
|
DataSize = minu(BufferSize, DataSize);
|
|
LoadStack(&SrcData[SrcDataSize*NumChannels], Data,
|
|
ALBuffer->FmtType, DataSize*NumChannels);
|
|
SrcDataSize += DataSize;
|
|
BufferSize -= DataSize;
|
|
}
|
|
}
|
|
tmpiter = tmpiter->next;
|
|
if(!tmpiter && Looping)
|
|
tmpiter = Source->queue;
|
|
else if(!tmpiter)
|
|
{
|
|
SilenceStack(&SrcData[SrcDataSize*NumChannels], BufferSize*NumChannels);
|
|
SrcDataSize += BufferSize;
|
|
BufferSize -= BufferSize;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Figure out how many samples we can mix. */
|
|
DataSize64 = SrcDataSize;
|
|
DataSize64 -= BufferPadding+BufferPrePadding;
|
|
DataSize64 <<= FRACTIONBITS;
|
|
DataSize64 -= increment;
|
|
DataSize64 -= DataPosFrac;
|
|
|
|
BufferSize = (ALuint)((DataSize64+(increment-1)) / increment);
|
|
BufferSize = minu(BufferSize, (SamplesToDo-OutPos));
|
|
|
|
SrcData += BufferPrePadding*NumChannels;
|
|
Source->Params.DoMix(Source, Device, SrcData, &DataPosInt, &DataPosFrac,
|
|
OutPos, SamplesToDo, BufferSize);
|
|
OutPos += BufferSize;
|
|
|
|
/* Handle looping sources */
|
|
while(1)
|
|
{
|
|
const ALbuffer *ALBuffer;
|
|
ALuint DataSize = 0;
|
|
ALuint LoopStart = 0;
|
|
ALuint LoopEnd = 0;
|
|
|
|
if((ALBuffer=BufferListItem->buffer) != NULL)
|
|
{
|
|
DataSize = ALBuffer->SampleLen;
|
|
LoopStart = ALBuffer->LoopStart;
|
|
LoopEnd = ALBuffer->LoopEnd;
|
|
if(LoopEnd > DataPosInt)
|
|
break;
|
|
}
|
|
|
|
if(Looping && Source->lSourceType == AL_STATIC)
|
|
{
|
|
DataPosInt = ((DataPosInt-LoopStart)%(LoopEnd-LoopStart)) + LoopStart;
|
|
break;
|
|
}
|
|
|
|
if(DataSize > DataPosInt)
|
|
break;
|
|
|
|
if(BufferListItem->next)
|
|
{
|
|
BufferListItem = BufferListItem->next;
|
|
BuffersPlayed++;
|
|
}
|
|
else if(Looping)
|
|
{
|
|
BufferListItem = Source->queue;
|
|
BuffersPlayed = 0;
|
|
}
|
|
else
|
|
{
|
|
State = AL_STOPPED;
|
|
BufferListItem = Source->queue;
|
|
BuffersPlayed = Source->BuffersInQueue;
|
|
DataPosInt = 0;
|
|
DataPosFrac = 0;
|
|
break;
|
|
}
|
|
|
|
DataPosInt -= DataSize;
|
|
}
|
|
} while(State == AL_PLAYING && OutPos < SamplesToDo);
|
|
|
|
/* Update source info */
|
|
Source->state = State;
|
|
Source->BuffersPlayed = BuffersPlayed;
|
|
Source->position = DataPosInt;
|
|
Source->position_fraction = DataPosFrac;
|
|
Source->HrtfOffset += OutPos;
|
|
if(State == AL_PLAYING)
|
|
{
|
|
Source->HrtfCounter = maxu(Source->HrtfCounter, OutPos) - OutPos;
|
|
Source->HrtfMoving = AL_TRUE;
|
|
}
|
|
else
|
|
{
|
|
Source->HrtfCounter = 0;
|
|
Source->HrtfMoving = AL_FALSE;
|
|
}
|
|
}
|