951 lines
29 KiB
C
951 lines
29 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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#define _CRT_SECURE_NO_DEPRECATE // get rid of sprintf security warnings on VS2005
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#include <stdlib.h>
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#include <stdio.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 "alError.h"
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#include "alBuffer.h"
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/*
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* AL Buffer Functions
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*
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* AL Buffers are shared amoung Contexts, so we store the list of generated Buffers
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* as a global variable in this module. (A valid context is not required to make
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* AL Buffer function calls
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*
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*/
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/*
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* Global Variables
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*/
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static ALbuffer *g_pBuffers = NULL; // Linked List of Buffers
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static ALuint g_uiBufferCount = 0; // Buffer Count
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static const long g_IMAStep_size[89]={ // IMA ADPCM Stepsize table
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7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 21, 23, 25, 28, 31,
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34, 37, 41, 45, 50, 55, 60, 66, 73, 80, 88, 97, 107, 118, 130, 143,
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157, 173, 190, 209, 230, 253, 279, 307, 337, 371, 408, 449, 494, 544, 598, 658,
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724, 796, 876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066, 2272, 2499, 2749, 3024,
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3327, 3660, 4026, 4428, 4871, 5358, 5894, 6484, 7132, 7845, 8630, 9493,10442,11487,12635,13899,
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15289,16818,18500,20350,22358,24633,27086,29794,32767
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};
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static const long g_IMACodeword_4[16]={ // IMA4 ADPCM Codeword decode table
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1, 3, 5, 7, 9, 11, 13, 15,
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-1,-3,-5,-7,-9,-11,-13,-15,
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};
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static const long g_IMAIndex_adjust_4[16]={ // IMA4 ADPCM Step index adjust decode table
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-1,-1,-1,-1, 2, 4, 6, 8,
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-1,-1,-1,-1, 2, 4, 6, 8
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};
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/*
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* alGenBuffers(ALsizei n, ALuint *puiBuffers)
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*
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* Generates n AL Buffers, and stores the Buffers Names in the array pointed to by puiBuffers
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*/
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ALAPI ALvoid ALAPIENTRY alGenBuffers(ALsizei n,ALuint *puiBuffers)
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{
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ALCcontext *Context;
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ALsizei i=0;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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// Check that we are actually generation some Buffers
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if (n > 0)
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{
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// Check the pointer is valid (and points to enough memory to store Buffer Names)
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if (!IsBadWritePtr((void*)puiBuffers, n * sizeof(ALuint)))
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{
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ALbuffer **list = &g_pBuffers;
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while(*list)
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list = &(*list)->next;
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// Create all the new Buffers
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while(i < n)
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{
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*list = calloc(1, sizeof(ALbuffer));
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if(*list)
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{
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puiBuffers[i] = (ALuint)ALTHUNK_ADDENTRY(*list);
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(*list)->state = UNUSED;
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g_uiBufferCount++;
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i++;
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list = &(*list)->next;
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}
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}
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// If we didn't create all the Buffers, we must have run out of memory
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if (i != n)
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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{
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// Pointer does not point to enough memory to write Buffer names
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alSetError(AL_INVALID_VALUE);
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}
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}
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ProcessContext(Context);
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return;
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}
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/*
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* alDeleteBuffers(ALsizei n, ALuint *puiBuffers)
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*
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* Deletes the n AL Buffers pointed to by puiBuffers
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*/
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ALAPI ALvoid ALAPIENTRY alDeleteBuffers(ALsizei n, const ALuint *puiBuffers)
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{
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ALCcontext *Context;
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ALbuffer *ALBuf;
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ALsizei i;
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ALboolean bFailed = AL_FALSE;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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// Check we are actually Deleting some Buffers
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if (n >= 0)
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{
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if ((ALuint)n <= g_uiBufferCount)
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{
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// Check that all the buffers are valid and can actually be deleted
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for (i = 0; i < n; i++)
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{
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// Check for valid Buffer ID (can be NULL buffer)
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if (alIsBuffer(puiBuffers[i]))
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{
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// If not the NULL buffer, check that the reference count is 0
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ALBuf = ((ALbuffer *)ALTHUNK_LOOKUPENTRY(puiBuffers[i]));
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if (ALBuf)
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{
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if (ALBuf->refcount != 0)
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{
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// Buffer still in use, cannot be deleted
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alSetError(AL_INVALID_OPERATION);
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bFailed = AL_TRUE;
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}
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}
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}
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else
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{
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// Invalid Buffer
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alSetError(AL_INVALID_NAME);
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bFailed = AL_TRUE;
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}
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}
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// If all the Buffers were valid (and have Reference Counts of 0), then we can delete them
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if (!bFailed)
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{
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for (i = 0; i < n; i++)
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{
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ALBuf=((ALbuffer *)ALTHUNK_LOOKUPENTRY(puiBuffers[i]));
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if (ALBuf)
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{
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ALbuffer **list = &g_pBuffers;
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while(*list && *list != ALBuf)
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list = &(*list)->next;
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if(*list)
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*list = (*list)->next;
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// Release the memory used to store audio data
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free(ALBuf->data);
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// Release buffer structure
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ALTHUNK_REMOVEENTRY(puiBuffers[i]);
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memset(ALBuf, 0, sizeof(ALbuffer));
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g_uiBufferCount--;
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free(ALBuf);
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}
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}
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}
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}
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else
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alSetError(AL_INVALID_NAME);
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}
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else
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alSetError(AL_INVALID_VALUE);
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ProcessContext(Context);
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return;
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}
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/*
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* alIsBuffer(ALuint uiBuffer)
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*
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* Checks if ulBuffer is a valid Buffer Name
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*/
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ALAPI ALboolean ALAPIENTRY alIsBuffer(ALuint uiBuffer)
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{
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ALCcontext *Context;
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ALboolean result=AL_FALSE;
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ALbuffer *ALBuf;
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ALbuffer *TgtALBuf;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (uiBuffer)
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{
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TgtALBuf = (ALbuffer *)ALTHUNK_LOOKUPENTRY(uiBuffer);
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// Check through list of generated buffers for uiBuffer
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ALBuf = g_pBuffers;
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while (ALBuf)
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{
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if (ALBuf == TgtALBuf)
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{
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result = AL_TRUE;
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break;
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}
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ALBuf = ALBuf->next;
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}
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}
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else
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{
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result = AL_TRUE;
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}
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ProcessContext(Context);
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return result;
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}
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/*
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* alBufferData(ALuint buffer,ALenum format,ALvoid *data,ALsizei size,ALsizei freq)
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*
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* Fill buffer with audio data
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*/
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ALAPI ALvoid ALAPIENTRY alBufferData(ALuint buffer,ALenum format,const ALvoid *data,ALsizei size,ALsizei freq)
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{
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ALuint *IMAData,IMACode;
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ALCcontext *Context;
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ALint Sample,Index;
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ALint LeftSample,LeftIndex;
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ALint RightSample,RightIndex;
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ALuint LeftIMACode,RightIMACode;
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ALbuffer *ALBuf;
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ALsizei i,j,k;
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Context = alcGetCurrentContext();
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SuspendContext(Context);
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if (alIsBuffer(buffer) && (buffer != 0))
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{
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ALBuf=((ALbuffer *)ALTHUNK_LOOKUPENTRY(buffer));
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if ((ALBuf->refcount==0)&&(data))
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{
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switch(format)
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{
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case AL_FORMAT_MONO8:
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if ((size%1) == 0)
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{
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// 8bit Samples are converted to 16 bit here
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// Allocate 8 extra samples (16 bytes)
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ALBuf->data=realloc(ALBuf->data,16+(size/sizeof(ALubyte))*(1*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_MONO16;
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ALBuf->eOriginalFormat = AL_FORMAT_MONO8;
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for (i=0;i<(ALsizei)(size/sizeof(ALubyte));i++)
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ALBuf->data[i]=(ALshort)((((ALubyte *)data)[i]-128)<<8);
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memset(&(ALBuf->data[size/sizeof(ALubyte)]), 0, 16);
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ALBuf->size=size/sizeof(ALubyte)*1*sizeof(ALshort);
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ALBuf->frequency=freq;
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}
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else
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_FORMAT_MONO16:
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if ((size%2) == 0)
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{
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// Allocate 8 extra samples (16 bytes)
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ALBuf->data=realloc(ALBuf->data,16+(size/sizeof(ALshort))*(1*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_MONO16;
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ALBuf->eOriginalFormat = AL_FORMAT_MONO16;
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memcpy(ALBuf->data,data,size/sizeof(ALshort)*1*sizeof(ALshort));
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memset(&(ALBuf->data[size/sizeof(ALshort)]), 0, 16);
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ALBuf->size=size/sizeof(ALshort)*1*sizeof(ALshort);
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ALBuf->frequency=freq;
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}
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else
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_FORMAT_STEREO8:
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if ((size%2) == 0)
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{
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// 8bit Samples are converted to 16 bit here
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// Allocate 8 extra samples (32 bytes)
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ALBuf->data=realloc(ALBuf->data,32+(size/sizeof(ALubyte))*(1*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_STEREO16;
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ALBuf->eOriginalFormat = AL_FORMAT_STEREO8;
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for (i=0;i<(ALsizei)(size/sizeof(ALubyte));i++)
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ALBuf->data[i]=(ALshort)((((ALubyte *)data)[i]-128)<<8);
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memset(&(ALBuf->data[size/sizeof(ALubyte)]), 0, 32);
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ALBuf->size=size/sizeof(ALubyte)*1*sizeof(ALshort);
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ALBuf->frequency=freq;
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}
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else
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_FORMAT_STEREO16:
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if ((size%4) == 0)
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{
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// Allocate 8 extra samples (32 bytes)
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ALBuf->data=realloc(ALBuf->data,32+(size/sizeof(ALshort))*(1*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_STEREO16;
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ALBuf->eOriginalFormat = AL_FORMAT_STEREO16;
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memcpy(ALBuf->data,data,size/sizeof(ALshort)*1*sizeof(ALshort));
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memset(&(ALBuf->data[size/sizeof(ALshort)]), 0, 32);
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ALBuf->size=size/sizeof(ALshort)*1*sizeof(ALshort);
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ALBuf->frequency=freq;
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}
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else
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_FORMAT_MONO_IMA4:
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// Here is where things vary:
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// nVidia and Apple use 64+1 samples per block => block_size=36 bytes
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// Most PC sound software uses 2040+1 samples per block -> block_size=1024 bytes
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if ((size%36) == 0)
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{
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// Allocate 8 extra samples (16 bytes)
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ALBuf->data=realloc(ALBuf->data,16+(size/36)*(65*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_MONO16;
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ALBuf->eOriginalFormat = AL_FORMAT_MONO_IMA4;
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IMAData=(ALuint *)data;
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for (i=0;i<size/36;i++)
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{
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Sample=((ALshort *)IMAData)[0];
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Index=((ALshort *)IMAData)[1];
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Index=Index<0?0:Index;
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Index=Index>88?88:Index;
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ALBuf->data[i*65]=(short)Sample;
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IMAData++;
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for (j=1;j<65;j+=8)
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{
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IMACode=*IMAData;
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for (k=0;k<8;k+=2)
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{
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Sample+=((g_IMAStep_size[Index]*g_IMACodeword_4[IMACode&15])/8);
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Index+=g_IMAIndex_adjust_4[IMACode&15];
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if (Sample<-32768) Sample=-32768;
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else if (Sample>32767) Sample=32767;
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if (Index<0) Index=0;
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else if (Index>88) Index=88;
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ALBuf->data[i*65+j+k]=(short)Sample;
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IMACode>>=4;
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Sample+=((g_IMAStep_size[Index]*g_IMACodeword_4[IMACode&15])/8);
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Index+=g_IMAIndex_adjust_4[IMACode&15];
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if (Sample<-32768) Sample=-32768;
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else if (Sample>32767) Sample=32767;
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if (Index<0) Index=0;
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else if (Index>88) Index=88;
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ALBuf->data[i*65+j+k+1]=(short)Sample;
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IMACode>>=4;
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}
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IMAData++;
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}
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}
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memset(&(ALBuf->data[(size/36*65)]), 0, 16);
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ALBuf->size=size/36*65*sizeof(ALshort);
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ALBuf->frequency=freq;
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}
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else
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alSetError(AL_OUT_OF_MEMORY);
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}
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else
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alSetError(AL_INVALID_VALUE);
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break;
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case AL_FORMAT_STEREO_IMA4:
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// Here is where things vary:
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// nVidia and Apple use 64+1 samples per channel per block => block_size=72 bytes
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// Most PC sound software uses 2040+1 samples per channel per block -> block_size=2048 bytes
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if ((size%72) == 0)
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{
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// Allocate 8 extra samples (32 bytes)
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ALBuf->data=realloc(ALBuf->data,32+(size/72)*(2*65*sizeof(ALshort)));
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if (ALBuf->data)
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{
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ALBuf->format = AL_FORMAT_STEREO16;
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ALBuf->eOriginalFormat = AL_FORMAT_STEREO_IMA4;
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IMAData=(ALuint *)data;
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for (i=0;i<size/72;i++)
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{
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LeftSample=((ALshort *)IMAData)[0];
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LeftIndex=((ALshort *)IMAData)[1];
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LeftIndex=LeftIndex<0?0:LeftIndex;
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LeftIndex=LeftIndex>88?88:LeftIndex;
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ALBuf->data[i*2*65]=(short)LeftSample;
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IMAData++;
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RightSample=((ALshort *)IMAData)[0];
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RightIndex=((ALshort *)IMAData)[1];
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RightIndex=RightIndex<0?0:RightIndex;
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RightIndex=RightIndex>88?88:RightIndex;
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ALBuf->data[i*2*65+1]=(short)RightSample;
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IMAData++;
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for (j=2;j<130;j+=16)
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{
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LeftIMACode=IMAData[0];
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RightIMACode=IMAData[1];
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for (k=0;k<16;k+=4)
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{
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LeftSample+=((g_IMAStep_size[LeftIndex]*g_IMACodeword_4[LeftIMACode&15])/8);
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LeftIndex+=g_IMAIndex_adjust_4[LeftIMACode&15];
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if (LeftSample<-32768) LeftSample=-32768;
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else if (LeftSample>32767) LeftSample=32767;
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if (LeftIndex<0) LeftIndex=0;
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else if (LeftIndex>88) LeftIndex=88;
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ALBuf->data[i*2*65+j+k]=(short)LeftSample;
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LeftIMACode>>=4;
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RightSample+=((g_IMAStep_size[RightIndex]*g_IMACodeword_4[RightIMACode&15])/8);
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RightIndex+=g_IMAIndex_adjust_4[RightIMACode&15];
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if (RightSample<-32768) RightSample=-32768;
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else if (RightSample>32767) RightSample=32767;
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if (RightIndex<0) RightIndex=0;
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else if (RightIndex>88) RightIndex=88;
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ALBuf->data[i*2*65+j+k+1]=(short)RightSample;
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RightIMACode>>=4;
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LeftSample+=((g_IMAStep_size[LeftIndex]*g_IMACodeword_4[LeftIMACode&15])/8);
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LeftIndex+=g_IMAIndex_adjust_4[LeftIMACode&15];
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if (LeftSample<-32768) LeftSample=-32768;
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else if (LeftSample>32767) LeftSample=32767;
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if (LeftIndex<0) LeftIndex=0;
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else if (LeftIndex>88) LeftIndex=88;
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ALBuf->data[i*2*65+j+k+2]=(short)LeftSample;
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LeftIMACode>>=4;
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RightSample+=((g_IMAStep_size[RightIndex]*g_IMACodeword_4[RightIMACode&15])/8);
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RightIndex+=g_IMAIndex_adjust_4[RightIMACode&15];
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if (RightSample<-32768) RightSample=-32768;
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else if (RightSample>32767) RightSample=32767;
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if (RightIndex<0) RightIndex=0;
|
|
else if (RightIndex>88) RightIndex=88;
|
|
ALBuf->data[i*2*65+j+k+3]=(short)RightSample;
|
|
RightIMACode>>=4;
|
|
}
|
|
IMAData+=2;
|
|
}
|
|
}
|
|
memset(&(ALBuf->data[(size/72*2*65)]), 0, 32);
|
|
ALBuf->size=size/72*2*65*sizeof(ALshort);
|
|
ALBuf->frequency=freq;
|
|
}
|
|
else
|
|
alSetError(AL_OUT_OF_MEMORY);
|
|
}
|
|
else
|
|
alSetError(AL_INVALID_VALUE);
|
|
break;
|
|
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Buffer is in use, or data is a NULL pointer
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Invalid Buffer Name
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(Context);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBufferf(ALuint buffer, ALenum eParam, ALfloat flValue)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)flValue;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBuffer3f(ALuint buffer, ALenum eParam, ALfloat flValue1, ALfloat flValue2, ALfloat flValue3)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)flValue1;
|
|
(void)flValue2;
|
|
(void)flValue3;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBufferfv(ALuint buffer, ALenum eParam, const ALfloat* flValues)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)flValues;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBufferi(ALuint buffer, ALenum eParam, ALint lValue)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)lValue;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBuffer3i( ALuint buffer, ALenum eParam, ALint lValue1, ALint lValue2, ALint lValue3)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)lValue1;
|
|
(void)lValue2;
|
|
(void)lValue3;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alBufferiv(ALuint buffer, ALenum eParam, const ALint* plValues)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
(void)plValues;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI ALvoid ALAPIENTRY alGetBufferf(ALuint buffer, ALenum eParam, ALfloat *pflValue)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (pflValue)
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alGetBuffer3f(ALuint buffer, ALenum eParam, ALfloat* pflValue1, ALfloat* pflValue2, ALfloat* pflValue3)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if ((pflValue1) && (pflValue2) && (pflValue3))
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alGetBufferfv(ALuint buffer, ALenum eParam, ALfloat* pflValues)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (pflValues)
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI ALvoid ALAPIENTRY alGetBufferi(ALuint buffer, ALenum eParam, ALint *plValue)
|
|
{
|
|
ALCcontext *pContext;
|
|
ALbuffer *pBuffer;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (plValue)
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
pBuffer = ((ALbuffer *)ALTHUNK_LOOKUPENTRY(buffer));
|
|
|
|
switch (eParam)
|
|
{
|
|
case AL_FREQUENCY:
|
|
*plValue = pBuffer->frequency;
|
|
break;
|
|
|
|
case AL_BITS:
|
|
*plValue= (((pBuffer->format==AL_FORMAT_MONO8)||(pBuffer->format==AL_FORMAT_STEREO8))?8:16);
|
|
break;
|
|
|
|
case AL_CHANNELS:
|
|
*plValue = (((pBuffer->format==AL_FORMAT_MONO8)||(pBuffer->format==AL_FORMAT_MONO16))?1:2);
|
|
break;
|
|
|
|
case AL_SIZE:
|
|
*plValue = pBuffer->size;
|
|
break;
|
|
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alGetBuffer3i(ALuint buffer, ALenum eParam, ALint* plValue1, ALint* plValue2, ALint* plValue3)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if ((plValue1) && (plValue2) && (plValue3))
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch(eParam)
|
|
{
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
ALAPI void ALAPIENTRY alGetBufferiv(ALuint buffer, ALenum eParam, ALint* plValues)
|
|
{
|
|
ALCcontext *pContext;
|
|
|
|
pContext = alcGetCurrentContext();
|
|
SuspendContext(pContext);
|
|
|
|
if (plValues)
|
|
{
|
|
if (alIsBuffer(buffer) && (buffer != 0))
|
|
{
|
|
switch (eParam)
|
|
{
|
|
case AL_FREQUENCY:
|
|
case AL_BITS:
|
|
case AL_CHANNELS:
|
|
case AL_SIZE:
|
|
alGetBufferi(buffer, eParam, plValues);
|
|
break;
|
|
|
|
default:
|
|
alSetError(AL_INVALID_ENUM);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_NAME);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
alSetError(AL_INVALID_VALUE);
|
|
}
|
|
|
|
ProcessContext(pContext);
|
|
}
|
|
|
|
|
|
/*
|
|
* ReleaseALBuffers()
|
|
*
|
|
* INTERNAL FN : Called by DLLMain on exit to destroy any buffers that still exist
|
|
*/
|
|
ALvoid ReleaseALBuffers(ALvoid)
|
|
{
|
|
ALbuffer *ALBuffer;
|
|
ALbuffer *ALBufferTemp;
|
|
|
|
#ifdef _DEBUG
|
|
if(g_uiBufferCount > 0)
|
|
AL_PRINT("exit() %d Buffer(s) NOT deleted\n", g_uiBufferCount);
|
|
#endif
|
|
|
|
ALBuffer = g_pBuffers;
|
|
while(ALBuffer)
|
|
{
|
|
// Release sample data
|
|
free(ALBuffer->data);
|
|
|
|
// Release Buffer structure
|
|
ALBufferTemp = ALBuffer;
|
|
ALBuffer = ALBuffer->next;
|
|
memset(ALBufferTemp, 0, sizeof(ALbuffer));
|
|
free(ALBufferTemp);
|
|
}
|
|
g_pBuffers = NULL;
|
|
g_uiBufferCount = 0;
|
|
}
|