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changeset 61:7d2857f170e2

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Remove the audio converter.
author Matti Hamalainen <ccr@tnsp.org>
date Tue, 06 Aug 2013 23:46:28 +0300
parents 9c63b355c82b
children 301805d68a97
files liboggplayer-src/src/SDL_audiocvt.cpp liboggplayer-src/src/SDL_audiocvt.hpp
diffstat 2 files changed, 0 insertions(+), 1558 deletions(-) [+]
line wrap: on
line diff
--- a/liboggplayer-src/src/SDL_audiocvt.cpp	Tue Aug 06 23:45:05 2013 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1509 +0,0 @@
-/*
-	This is a modified version of SDL_audiocvt.c from SDL 1.2.13
-	It does not depend on any other files from SDL
-*/
-/*
-    SDL - Simple DirectMedia Layer
-    Copyright (C) 1997-2006 Sam Lantinga
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2.1 of the License, or (at your option) any later version.
-
-    This library 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
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-
-    Sam Lantinga
-    slouken@libsdl.org
-*/
-
-#include "SDL_audiocvt.hpp"
-
-/* Effectively mix right and left channels into a single channel */
-void  SDL_ConvertMono(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Sint32 sample;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting to mono\n");
-#endif
-	switch (format&0x8018) {
-
-		case AUDIO_U8: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			for ( i=cvt->len_cvt/2; i; --i ) {
-				sample = src[0] + src[1];
-				*dst = (Uint8)(sample / 2);
-				src += 2;
-				dst += 1;
-			}
-		}
-		break;
-
-		case AUDIO_S8: {
-			Sint8 *src, *dst;
-
-			src = (Sint8 *)cvt->buf;
-			dst = (Sint8 *)cvt->buf;
-			for ( i=cvt->len_cvt/2; i; --i ) {
-				sample = src[0] + src[1];
-				*dst = (Sint8)(sample / 2);
-				src += 2;
-				dst += 1;
-			}
-		}
-		break;
-
-		case AUDIO_U16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					sample = (Uint16)((src[0]<<8)|src[1])+
-					         (Uint16)((src[2]<<8)|src[3]);
-					sample /= 2;
-					dst[1] = (sample&0xFF);
-					sample >>= 8;
-					dst[0] = (sample&0xFF);
-					src += 4;
-					dst += 2;
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					sample = (Uint16)((src[1]<<8)|src[0])+
-					         (Uint16)((src[3]<<8)|src[2]);
-					sample /= 2;
-					dst[0] = (sample&0xFF);
-					sample >>= 8;
-					dst[1] = (sample&0xFF);
-					src += 4;
-					dst += 2;
-				}
-			}
-		}
-		break;
-
-		case AUDIO_S16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					sample = (Sint16)((src[0]<<8)|src[1])+
-					         (Sint16)((src[2]<<8)|src[3]);
-					sample /= 2;
-					dst[1] = (sample&0xFF);
-					sample >>= 8;
-					dst[0] = (sample&0xFF);
-					src += 4;
-					dst += 2;
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					sample = (Sint16)((src[1]<<8)|src[0])+
-					         (Sint16)((src[3]<<8)|src[2]);
-					sample /= 2;
-					dst[0] = (sample&0xFF);
-					sample >>= 8;
-					dst[1] = (sample&0xFF);
-					src += 4;
-					dst += 2;
-				}
-			}
-		}
-		break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Discard top 4 channels */
-void  SDL_ConvertStrip(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Sint32 lsample, rsample;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting down to stereo\n");
-#endif
-	switch (format&0x8018) {
-
-		case AUDIO_U8: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			for ( i=cvt->len_cvt/6; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 6;
-				dst += 2;
-			}
-		}
-		break;
-
-		case AUDIO_S8: {
-			Sint8 *src, *dst;
-
-			src = (Sint8 *)cvt->buf;
-			dst = (Sint8 *)cvt->buf;
-			for ( i=cvt->len_cvt/6; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 6;
-				dst += 2;
-			}
-		}
-		break;
-
-		case AUDIO_U16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/12; i; --i ) {
-					lsample = (Uint16)((src[0]<<8)|src[1]);
-					rsample = (Uint16)((src[2]<<8)|src[3]);
-						dst[1] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[0] = (lsample&0xFF);
-						dst[3] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[2] = (rsample&0xFF);
-					src += 12;
-					dst += 4;
-				}
-			} else {
-				for ( i=cvt->len_cvt/12; i; --i ) {
-					lsample = (Uint16)((src[1]<<8)|src[0]);
-					rsample = (Uint16)((src[3]<<8)|src[2]);
-						dst[0] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[1] = (lsample&0xFF);
-						dst[2] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[3] = (rsample&0xFF);
-					src += 12;
-					dst += 4;
-				}
-			}
-		}
-		break;
-
-		case AUDIO_S16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/12; i; --i ) {
-					lsample = (Sint16)((src[0]<<8)|src[1]);
-					rsample = (Sint16)((src[2]<<8)|src[3]);
-						dst[1] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[0] = (lsample&0xFF);
-						dst[3] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[2] = (rsample&0xFF);
-					src += 12;
-					dst += 4;
-				}
-			} else {
-				for ( i=cvt->len_cvt/12; i; --i ) {
-					lsample = (Sint16)((src[1]<<8)|src[0]);
-					rsample = (Sint16)((src[3]<<8)|src[2]);
-						dst[0] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[1] = (lsample&0xFF);
-						dst[2] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[3] = (rsample&0xFF);
-					src += 12;
-					dst += 4;
-				}
-			}
-		}
-		break;
-	}
-	cvt->len_cvt /= 3;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Discard top 2 channels of 6 */
-void  SDL_ConvertStrip_2(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Sint32 lsample, rsample;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting 6 down to quad\n");
-#endif
-	switch (format&0x8018) {
-
-		case AUDIO_U8: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 4;
-				dst += 2;
-			}
-		}
-		break;
-
-		case AUDIO_S8: {
-			Sint8 *src, *dst;
-
-			src = (Sint8 *)cvt->buf;
-			dst = (Sint8 *)cvt->buf;
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 4;
-				dst += 2;
-			}
-		}
-		break;
-
-		case AUDIO_U16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/8; i; --i ) {
-					lsample = (Uint16)((src[0]<<8)|src[1]);
-					rsample = (Uint16)((src[2]<<8)|src[3]);
-						dst[1] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[0] = (lsample&0xFF);
-						dst[3] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[2] = (rsample&0xFF);
-					src += 8;
-					dst += 4;
-				}
-			} else {
-				for ( i=cvt->len_cvt/8; i; --i ) {
-					lsample = (Uint16)((src[1]<<8)|src[0]);
-					rsample = (Uint16)((src[3]<<8)|src[2]);
-						dst[0] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[1] = (lsample&0xFF);
-						dst[2] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[3] = (rsample&0xFF);
-					src += 8;
-					dst += 4;
-				}
-			}
-		}
-		break;
-
-		case AUDIO_S16: {
-			Uint8 *src, *dst;
-
-			src = cvt->buf;
-			dst = cvt->buf;
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/8; i; --i ) {
-					lsample = (Sint16)((src[0]<<8)|src[1]);
-					rsample = (Sint16)((src[2]<<8)|src[3]);
-						dst[1] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[0] = (lsample&0xFF);
-						dst[3] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[2] = (rsample&0xFF);
-					src += 8;
-					dst += 4;
-				}
-			} else {
-				for ( i=cvt->len_cvt/8; i; --i ) {
-					lsample = (Sint16)((src[1]<<8)|src[0]);
-					rsample = (Sint16)((src[3]<<8)|src[2]);
-						dst[0] = (lsample&0xFF);
-						lsample >>= 8;
-						dst[1] = (lsample&0xFF);
-						dst[2] = (rsample&0xFF);
-						rsample >>= 8;
-						dst[3] = (rsample&0xFF);
-					src += 8;
-					dst += 4;
-				}
-			}
-		}
-		break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Duplicate a mono channel to both stereo channels */
-void  SDL_ConvertStereo(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting to stereo\n");
-#endif
-	if ( (format & 0xFF) == 16 ) {
-		Uint16 *src, *dst;
-
-		src = (Uint16 *)(cvt->buf+cvt->len_cvt);
-		dst = (Uint16 *)(cvt->buf+cvt->len_cvt*2);
-		for ( i=cvt->len_cvt/2; i; --i ) {
-			dst -= 2;
-			src -= 1;
-			dst[0] = src[0];
-			dst[1] = src[0];
-		}
-	} else {
-		Uint8 *src, *dst;
-
-		src = cvt->buf+cvt->len_cvt;
-		dst = cvt->buf+cvt->len_cvt*2;
-		for ( i=cvt->len_cvt; i; --i ) {
-			dst -= 2;
-			src -= 1;
-			dst[0] = src[0];
-			dst[1] = src[0];
-		}
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Duplicate a stereo channel to a pseudo-5.1 stream */
-void  SDL_ConvertSurround(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting stereo to surround\n");
-#endif
-	switch (format&0x8018) {
-
-		case AUDIO_U8: {
-			Uint8 *src, *dst, lf, rf, ce;
-
-			src = (Uint8 *)(cvt->buf+cvt->len_cvt);
-			dst = (Uint8 *)(cvt->buf+cvt->len_cvt*3);
-			for ( i=cvt->len_cvt; i; --i ) {
-				dst -= 6;
-				src -= 2;
-				lf = src[0];
-				rf = src[1];
-				ce = (lf/2) + (rf/2);
-				dst[0] = lf;
-				dst[1] = rf;
-				dst[2] = lf - ce;
-				dst[3] = rf - ce;
-				dst[4] = ce;
-				dst[5] = ce;
-			}
-		}
-		break;
-
-		case AUDIO_S8: {
-			Sint8 *src, *dst, lf, rf, ce;
-
-			src = (Sint8 *)cvt->buf+cvt->len_cvt;
-			dst = (Sint8 *)cvt->buf+cvt->len_cvt*3;
-			for ( i=cvt->len_cvt; i; --i ) {
-				dst -= 6;
-				src -= 2;
-				lf = src[0];
-				rf = src[1];
-				ce = (lf/2) + (rf/2);
-				dst[0] = lf;
-				dst[1] = rf;
-				dst[2] = lf - ce;
-				dst[3] = rf - ce;
-				dst[4] = ce;
-				dst[5] = ce;
-			}
-		}
-		break;
-
-		case AUDIO_U16: {
-			Uint8 *src, *dst;
-			Uint16 lf, rf, ce, lr, rr;
-
-			src = cvt->buf+cvt->len_cvt;
-			dst = cvt->buf+cvt->len_cvt*3;
-
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 12;
-					src -= 4;
-					lf = (Uint16)((src[0]<<8)|src[1]);
-					rf = (Uint16)((src[2]<<8)|src[3]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[1] = (lf&0xFF);
-						dst[0] = ((lf>>8)&0xFF);
-						dst[3] = (rf&0xFF);
-						dst[2] = ((rf>>8)&0xFF);
-
-						dst[1+4] = (lr&0xFF);
-						dst[0+4] = ((lr>>8)&0xFF);
-						dst[3+4] = (rr&0xFF);
-						dst[2+4] = ((rr>>8)&0xFF);
-
-						dst[1+8] = (ce&0xFF);
-						dst[0+8] = ((ce>>8)&0xFF);
-						dst[3+8] = (ce&0xFF);
-						dst[2+8] = ((ce>>8)&0xFF);
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 12;
-					src -= 4;
-					lf = (Uint16)((src[1]<<8)|src[0]);
-					rf = (Uint16)((src[3]<<8)|src[2]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[0] = (lf&0xFF);
-						dst[1] = ((lf>>8)&0xFF);
-						dst[2] = (rf&0xFF);
-						dst[3] = ((rf>>8)&0xFF);
-
-						dst[0+4] = (lr&0xFF);
-						dst[1+4] = ((lr>>8)&0xFF);
-						dst[2+4] = (rr&0xFF);
-						dst[3+4] = ((rr>>8)&0xFF);
-
-						dst[0+8] = (ce&0xFF);
-						dst[1+8] = ((ce>>8)&0xFF);
-						dst[2+8] = (ce&0xFF);
-						dst[3+8] = ((ce>>8)&0xFF);
-				}
-			}
-		}
-		break;
-
-		case AUDIO_S16: {
-			Uint8 *src, *dst;
-			Sint16 lf, rf, ce, lr, rr;
-
-			src = cvt->buf+cvt->len_cvt;
-			dst = cvt->buf+cvt->len_cvt*3;
-
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 12;
-					src -= 4;
-					lf = (Sint16)((src[0]<<8)|src[1]);
-					rf = (Sint16)((src[2]<<8)|src[3]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[1] = (lf&0xFF);
-						dst[0] = ((lf>>8)&0xFF);
-						dst[3] = (rf&0xFF);
-						dst[2] = ((rf>>8)&0xFF);
-
-						dst[1+4] = (lr&0xFF);
-						dst[0+4] = ((lr>>8)&0xFF);
-						dst[3+4] = (rr&0xFF);
-						dst[2+4] = ((rr>>8)&0xFF);
-
-						dst[1+8] = (ce&0xFF);
-						dst[0+8] = ((ce>>8)&0xFF);
-						dst[3+8] = (ce&0xFF);
-						dst[2+8] = ((ce>>8)&0xFF);
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 12;
-					src -= 4;
-					lf = (Sint16)((src[1]<<8)|src[0]);
-					rf = (Sint16)((src[3]<<8)|src[2]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[0] = (lf&0xFF);
-						dst[1] = ((lf>>8)&0xFF);
-						dst[2] = (rf&0xFF);
-						dst[3] = ((rf>>8)&0xFF);
-
-						dst[0+4] = (lr&0xFF);
-						dst[1+4] = ((lr>>8)&0xFF);
-						dst[2+4] = (rr&0xFF);
-						dst[3+4] = ((rr>>8)&0xFF);
-
-						dst[0+8] = (ce&0xFF);
-						dst[1+8] = ((ce>>8)&0xFF);
-						dst[2+8] = (ce&0xFF);
-						dst[3+8] = ((ce>>8)&0xFF);
-				}
-			}
-		}
-		break;
-	}
-	cvt->len_cvt *= 3;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Duplicate a stereo channel to a pseudo-4.0 stream */
-void  SDL_ConvertSurround_4(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting stereo to quad\n");
-#endif
-	switch (format&0x8018) {
-
-		case AUDIO_U8: {
-			Uint8 *src, *dst, lf, rf, ce;
-
-			src = (Uint8 *)(cvt->buf+cvt->len_cvt);
-			dst = (Uint8 *)(cvt->buf+cvt->len_cvt*2);
-			for ( i=cvt->len_cvt; i; --i ) {
-				dst -= 4;
-				src -= 2;
-				lf = src[0];
-				rf = src[1];
-				ce = (lf/2) + (rf/2);
-				dst[0] = lf;
-				dst[1] = rf;
-				dst[2] = lf - ce;
-				dst[3] = rf - ce;
-			}
-		}
-		break;
-
-		case AUDIO_S8: {
-			Sint8 *src, *dst, lf, rf, ce;
-
-			src = (Sint8 *)cvt->buf+cvt->len_cvt;
-			dst = (Sint8 *)cvt->buf+cvt->len_cvt*2;
-			for ( i=cvt->len_cvt; i; --i ) {
-				dst -= 4;
-				src -= 2;
-				lf = src[0];
-				rf = src[1];
-				ce = (lf/2) + (rf/2);
-				dst[0] = lf;
-				dst[1] = rf;
-				dst[2] = lf - ce;
-				dst[3] = rf - ce;
-			}
-		}
-		break;
-
-		case AUDIO_U16: {
-			Uint8 *src, *dst;
-			Uint16 lf, rf, ce, lr, rr;
-
-			src = cvt->buf+cvt->len_cvt;
-			dst = cvt->buf+cvt->len_cvt*2;
-
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 8;
-					src -= 4;
-					lf = (Uint16)((src[0]<<8)|src[1]);
-					rf = (Uint16)((src[2]<<8)|src[3]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[1] = (lf&0xFF);
-						dst[0] = ((lf>>8)&0xFF);
-						dst[3] = (rf&0xFF);
-						dst[2] = ((rf>>8)&0xFF);
-
-						dst[1+4] = (lr&0xFF);
-						dst[0+4] = ((lr>>8)&0xFF);
-						dst[3+4] = (rr&0xFF);
-						dst[2+4] = ((rr>>8)&0xFF);
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 8;
-					src -= 4;
-					lf = (Uint16)((src[1]<<8)|src[0]);
-					rf = (Uint16)((src[3]<<8)|src[2]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[0] = (lf&0xFF);
-						dst[1] = ((lf>>8)&0xFF);
-						dst[2] = (rf&0xFF);
-						dst[3] = ((rf>>8)&0xFF);
-
-						dst[0+4] = (lr&0xFF);
-						dst[1+4] = ((lr>>8)&0xFF);
-						dst[2+4] = (rr&0xFF);
-						dst[3+4] = ((rr>>8)&0xFF);
-				}
-			}
-		}
-		break;
-
-		case AUDIO_S16: {
-			Uint8 *src, *dst;
-			Sint16 lf, rf, ce, lr, rr;
-
-			src = cvt->buf+cvt->len_cvt;
-			dst = cvt->buf+cvt->len_cvt*2;
-
-			if ( (format & 0x1000) == 0x1000 ) {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 8;
-					src -= 4;
-					lf = (Sint16)((src[0]<<8)|src[1]);
-					rf = (Sint16)((src[2]<<8)|src[3]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[1] = (lf&0xFF);
-						dst[0] = ((lf>>8)&0xFF);
-						dst[3] = (rf&0xFF);
-						dst[2] = ((rf>>8)&0xFF);
-
-						dst[1+4] = (lr&0xFF);
-						dst[0+4] = ((lr>>8)&0xFF);
-						dst[3+4] = (rr&0xFF);
-						dst[2+4] = ((rr>>8)&0xFF);
-				}
-			} else {
-				for ( i=cvt->len_cvt/4; i; --i ) {
-					dst -= 8;
-					src -= 4;
-					lf = (Sint16)((src[1]<<8)|src[0]);
-					rf = (Sint16)((src[3]<<8)|src[2]);
-					ce = (lf/2) + (rf/2);
-					rr = lf - ce;
-					lr = rf - ce;
-						dst[0] = (lf&0xFF);
-						dst[1] = ((lf>>8)&0xFF);
-						dst[2] = (rf&0xFF);
-						dst[3] = ((rf>>8)&0xFF);
-
-						dst[0+4] = (lr&0xFF);
-						dst[1+4] = ((lr>>8)&0xFF);
-						dst[2+4] = (rr&0xFF);
-						dst[3+4] = ((rr>>8)&0xFF);
-				}
-			}
-		}
-		break;
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Convert 8-bit to 16-bit - LSB */
-void  SDL_Convert16LSB(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting to 16-bit LSB\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	for ( i=cvt->len_cvt; i; --i ) {
-		src -= 1;
-		dst -= 2;
-		dst[1] = *src;
-		dst[0] = 0;
-	}
-	format = ((format & ~0x0008) | AUDIO_U16LSB);
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-/* Convert 8-bit to 16-bit - MSB */
-void  SDL_Convert16MSB(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting to 16-bit MSB\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	for ( i=cvt->len_cvt; i; --i ) {
-		src -= 1;
-		dst -= 2;
-		dst[0] = *src;
-		dst[1] = 0;
-	}
-	format = ((format & ~0x0008) | AUDIO_U16MSB);
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Convert 16-bit to 8-bit */
-void  SDL_Convert8(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting to 8-bit\n");
-#endif
-	src = cvt->buf;
-	dst = cvt->buf;
-	if ( (format & 0x1000) != 0x1000 ) { /* Little endian */
-		++src;
-	}
-	for ( i=cvt->len_cvt/2; i; --i ) {
-		*dst = *src;
-		src += 2;
-		dst += 1;
-	}
-	format = ((format & ~0x9010) | AUDIO_U8);
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Toggle signed/unsigned */
-void  SDL_ConvertSign(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *data;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio signedness\n");
-#endif
-	data = cvt->buf;
-	if ( (format & 0xFF) == 16 ) {
-		if ( (format & 0x1000) != 0x1000 ) { /* Little endian */
-			++data;
-		}
-		for ( i=cvt->len_cvt/2; i; --i ) {
-			*data ^= 0x80;
-			data += 2;
-		}
-	} else {
-		for ( i=cvt->len_cvt; i; --i ) {
-			*data++ ^= 0x80;
-		}
-	}
-	format = (format ^ 0x8000);
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Toggle endianness */
-void  SDL_ConvertEndian(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *data, tmp;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio endianness\n");
-#endif
-	data = cvt->buf;
-	for ( i=cvt->len_cvt/2; i; --i ) {
-		tmp = data[0];
-		data[0] = data[1];
-		data[1] = tmp;
-		data += 2;
-	}
-	format = (format ^ 0x1000);
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Convert rate up by multiple of 2 */
-void  SDL_RateMUL2(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate * 2\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt; i; --i ) {
-				src -= 1;
-				dst -= 2;
-				dst[0] = src[0];
-				dst[1] = src[0];
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/2; i; --i ) {
-				src -= 2;
-				dst -= 4;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[0];
-				dst[3] = src[1];
-			}
-			break;
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Convert rate up by multiple of 2, for stereo */
-void  SDL_RateMUL2_c2(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate * 2\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/2; i; --i ) {
-				src -= 2;
-				dst -= 4;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[0];
-				dst[3] = src[1];
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				src -= 4;
-				dst -= 8;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[0];
-				dst[5] = src[1];
-				dst[6] = src[2];
-				dst[7] = src[3];
-			}
-			break;
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Convert rate up by multiple of 2, for quad */
-void  SDL_RateMUL2_c4(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate * 2\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				src -= 4;
-				dst -= 8;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[0];
-				dst[5] = src[1];
-				dst[6] = src[2];
-				dst[7] = src[3];
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/8; i; --i ) {
-				src -= 8;
-				dst -= 16;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				dst[6] = src[6];
-				dst[7] = src[7];
-				dst[8] = src[0];
-				dst[9] = src[1];
-				dst[10] = src[2];
-				dst[11] = src[3];
-				dst[12] = src[4];
-				dst[13] = src[5];
-				dst[14] = src[6];
-				dst[15] = src[7];
-			}
-			break;
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Convert rate up by multiple of 2, for 5.1 */
-void  SDL_RateMUL2_c6(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate * 2\n");
-#endif
-	src = cvt->buf+cvt->len_cvt;
-	dst = cvt->buf+cvt->len_cvt*2;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/6; i; --i ) {
-				src -= 6;
-				dst -= 12;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				dst[6] = src[0];
-				dst[7] = src[1];
-				dst[8] = src[2];
-				dst[9] = src[3];
-				dst[10] = src[4];
-				dst[11] = src[5];
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/12; i; --i ) {
-				src -= 12;
-				dst -= 24;
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				dst[6] = src[6];
-				dst[7] = src[7];
-				dst[8] = src[8];
-				dst[9] = src[9];
-				dst[10] = src[10];
-				dst[11] = src[11];
-				dst[12] = src[0];
-				dst[13] = src[1];
-				dst[14] = src[2];
-				dst[15] = src[3];
-				dst[16] = src[4];
-				dst[17] = src[5];
-				dst[18] = src[6];
-				dst[19] = src[7];
-				dst[20] = src[8];
-				dst[21] = src[9];
-				dst[22] = src[10];
-				dst[23] = src[11];
-			}
-			break;
-	}
-	cvt->len_cvt *= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Convert rate down by multiple of 2 */
-void  SDL_RateDIV2(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate / 2\n");
-#endif
-	src = cvt->buf;
-	dst = cvt->buf;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/2; i; --i ) {
-				dst[0] = src[0];
-				src += 2;
-				dst += 1;
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 4;
-				dst += 2;
-			}
-			break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Convert rate down by multiple of 2, for stereo */
-void  SDL_RateDIV2_c2(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate / 2\n");
-#endif
-	src = cvt->buf;
-	dst = cvt->buf;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/4; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				src += 4;
-				dst += 2;
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/8; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				src += 8;
-				dst += 4;
-			}
-			break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-
-/* Convert rate down by multiple of 2, for quad */
-void  SDL_RateDIV2_c4(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate / 2\n");
-#endif
-	src = cvt->buf;
-	dst = cvt->buf;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/8; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				src += 8;
-				dst += 4;
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/16; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				dst[6] = src[6];
-				dst[7] = src[7];
-				src += 16;
-				dst += 8;
-			}
-			break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Convert rate down by multiple of 2, for 5.1 */
-void  SDL_RateDIV2_c6(SDL_AudioCVT *cvt, Uint16 format)
-{
-	int i;
-	Uint8 *src, *dst;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate / 2\n");
-#endif
-	src = cvt->buf;
-	dst = cvt->buf;
-	switch (format & 0xFF) {
-		case 8:
-			for ( i=cvt->len_cvt/12; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				src += 12;
-				dst += 6;
-			}
-			break;
-		case 16:
-			for ( i=cvt->len_cvt/24; i; --i ) {
-				dst[0] = src[0];
-				dst[1] = src[1];
-				dst[2] = src[2];
-				dst[3] = src[3];
-				dst[4] = src[4];
-				dst[5] = src[5];
-				dst[6] = src[6];
-				dst[7] = src[7];
-				dst[8] = src[8];
-				dst[9] = src[9];
-				dst[10] = src[10];
-				dst[11] = src[11];
-				src += 24;
-				dst += 12;
-			}
-			break;
-	}
-	cvt->len_cvt /= 2;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-/* Very slow rate conversion routine */
-void  SDL_RateSLOW(SDL_AudioCVT *cvt, Uint16 format)
-{
-	double ipos;
-	int i, clen;
-
-#ifdef DEBUG_CONVERT
-	fprintf(stderr, "Converting audio rate * %4.4f\n", 1.0/cvt->rate_incr);
-#endif
-	clen = (int)((double)cvt->len_cvt / cvt->rate_incr);
-	if ( cvt->rate_incr > 1.0 ) {
-		switch (format & 0xFF) {
-			case 8: {
-				Uint8 *output;
-
-				output = cvt->buf;
-				ipos = 0.0;
-				for ( i=clen; i; --i ) {
-					*output = cvt->buf[(int)ipos];
-					ipos += cvt->rate_incr;
-					output += 1;
-				}
-			}
-			break;
-
-			case 16: {
-				Uint16 *output;
-
-				clen &= ~1;
-				output = (Uint16 *)cvt->buf;
-				ipos = 0.0;
-				for ( i=clen/2; i; --i ) {
-					*output=((Uint16 *)cvt->buf)[(int)ipos];
-					ipos += cvt->rate_incr;
-					output += 1;
-				}
-			}
-			break;
-		}
-	} else {
-		switch (format & 0xFF) {
-			case 8: {
-				Uint8 *output;
-
-				output = cvt->buf+clen;
-				ipos = (double)cvt->len_cvt;
-				for ( i=clen; i; --i ) {
-					ipos -= cvt->rate_incr;
-					output -= 1;
-					*output = cvt->buf[(int)ipos];
-				}
-			}
-			break;
-
-			case 16: {
-				Uint16 *output;
-
-				clen &= ~1;
-				output = (Uint16 *)(cvt->buf+clen);
-				ipos = (double)cvt->len_cvt/2;
-				for ( i=clen/2; i; --i ) {
-					ipos -= cvt->rate_incr;
-					output -= 1;
-					*output=((Uint16 *)cvt->buf)[(int)ipos];
-				}
-			}
-			break;
-		}
-	}
-	cvt->len_cvt = clen;
-	if ( cvt->filters[++cvt->filter_index] ) {
-		cvt->filters[cvt->filter_index](cvt, format);
-	}
-}
-
-int SDL_ConvertAudio(SDL_AudioCVT *cvt)
-{
-	/* Make sure there's data to convert */
-	if ( cvt->buf == NULL ) {
-		return(-1);
-	}
-	/* Return okay if no conversion is necessary */
-	cvt->len_cvt = cvt->len;
-	if ( cvt->filters[0] == NULL ) {
-		return(0);
-	}
-
-	/* Set up the conversion and go! */
-	cvt->filter_index = 0;
-	cvt->filters[0](cvt, cvt->src_format);
-	return(0);
-}
-
-/* Creates a set of audio filters to convert from one format to another.
-   Returns -1 if the format conversion is not supported, or 1 if the
-   audio filter is set up.
-*/
-
-int SDL_BuildAudioCVT(SDL_AudioCVT *cvt,
-	Uint16 src_format, Uint8 src_channels, int src_rate,
-	Uint16 dst_format, Uint8 dst_channels, int dst_rate)
-{
-/*printf("Build format %04x->%04x, channels %u->%u, rate %d->%d\n",
-		src_format, dst_format, src_channels, dst_channels, src_rate, dst_rate);*/
-	/* Start off with no conversion necessary */
-	cvt->needed = 0;
-	cvt->filter_index = 0;
-	cvt->filters[0] = NULL;
-	cvt->len_mult = 1;
-	cvt->len_ratio = 1.0;
-
-	/* First filter:  Endian conversion from src to dst */
-	if ( (src_format & 0x1000) != (dst_format & 0x1000)
-	     && ((src_format & 0xff) == 16) && ((dst_format & 0xff) == 16)) {
-		cvt->filters[cvt->filter_index++] = SDL_ConvertEndian;
-	}
-
-	/* Second filter: Sign conversion -- signed/unsigned */
-	if ( (src_format & 0x8000) != (dst_format & 0x8000) ) {
-		cvt->filters[cvt->filter_index++] = SDL_ConvertSign;
-	}
-
-	/* Next filter:  Convert 16 bit <--> 8 bit PCM */
-	if ( (src_format & 0xFF) != (dst_format & 0xFF) ) {
-		switch (dst_format&0x10FF) {
-			case AUDIO_U8:
-				cvt->filters[cvt->filter_index++] =
-							 SDL_Convert8;
-				cvt->len_ratio /= 2;
-				break;
-			case AUDIO_U16LSB:
-				cvt->filters[cvt->filter_index++] =
-							SDL_Convert16LSB;
-				cvt->len_mult *= 2;
-				cvt->len_ratio *= 2;
-				break;
-			case AUDIO_U16MSB:
-				cvt->filters[cvt->filter_index++] =
-							SDL_Convert16MSB;
-				cvt->len_mult *= 2;
-				cvt->len_ratio *= 2;
-				break;
-		}
-	}
-
-	/* Last filter:  Mono/Stereo conversion */
-	if ( src_channels != dst_channels ) {
-		if ( (src_channels == 1) && (dst_channels > 1) ) {
-			cvt->filters[cvt->filter_index++] =
-						SDL_ConvertStereo;
-			cvt->len_mult *= 2;
-			src_channels = 2;
-			cvt->len_ratio *= 2;
-		}
-		if ( (src_channels == 2) &&
-				(dst_channels == 6) ) {
-			cvt->filters[cvt->filter_index++] =
-						 SDL_ConvertSurround;
-			src_channels = 6;
-			cvt->len_mult *= 3;
-			cvt->len_ratio *= 3;
-		}
-		if ( (src_channels == 2) &&
-				(dst_channels == 4) ) {
-			cvt->filters[cvt->filter_index++] =
-						 SDL_ConvertSurround_4;
-			src_channels = 4;
-			cvt->len_mult *= 2;
-			cvt->len_ratio *= 2;
-		}
-		while ( (src_channels*2) <= dst_channels ) {
-			cvt->filters[cvt->filter_index++] =
-						SDL_ConvertStereo;
-			cvt->len_mult *= 2;
-			src_channels *= 2;
-			cvt->len_ratio *= 2;
-		}
-		if ( (src_channels == 6) &&
-				(dst_channels <= 2) ) {
-			cvt->filters[cvt->filter_index++] =
-						 SDL_ConvertStrip;
-			src_channels = 2;
-			cvt->len_ratio /= 3;
-		}
-		if ( (src_channels == 6) &&
-				(dst_channels == 4) ) {
-			cvt->filters[cvt->filter_index++] =
-						 SDL_ConvertStrip_2;
-			src_channels = 4;
-			cvt->len_ratio /= 2;
-		}
-		/* This assumes that 4 channel audio is in the format:
-		     Left {front/back} + Right {front/back}
-		   so converting to L/R stereo works properly.
-		 */
-		while ( ((src_channels%2) == 0) &&
-				((src_channels/2) >= dst_channels) ) {
-			cvt->filters[cvt->filter_index++] =
-						 SDL_ConvertMono;
-			src_channels /= 2;
-			cvt->len_ratio /= 2;
-		}
-		if ( src_channels != dst_channels ) {
-			/* Uh oh.. */;
-		}
-	}
-
-	/* Do rate conversion */
-	cvt->rate_incr = 0.0;
-	if ( (src_rate/100) != (dst_rate/100) ) {
-		Uint32 hi_rate, lo_rate;
-		int len_mult;
-		double len_ratio;
-		void ( *rate_cvt)(SDL_AudioCVT *cvt, Uint16 format);
-
-		if ( src_rate > dst_rate ) {
-			hi_rate = src_rate;
-			lo_rate = dst_rate;
-			switch (src_channels) {
-				case 1: rate_cvt = SDL_RateDIV2; break;
-				case 2: rate_cvt = SDL_RateDIV2_c2; break;
-				case 4: rate_cvt = SDL_RateDIV2_c4; break;
-				case 6: rate_cvt = SDL_RateDIV2_c6; break;
-				default: return -1;
-			}
-			len_mult = 1;
-			len_ratio = 0.5;
-		} else {
-			hi_rate = dst_rate;
-			lo_rate = src_rate;
-			switch (src_channels) {
-				case 1: rate_cvt = SDL_RateMUL2; break;
-				case 2: rate_cvt = SDL_RateMUL2_c2; break;
-				case 4: rate_cvt = SDL_RateMUL2_c4; break;
-				case 6: rate_cvt = SDL_RateMUL2_c6; break;
-				default: return -1;
-			}
-			len_mult = 2;
-			len_ratio = 2.0;
-		}
-		/* If hi_rate = lo_rate*2^x then conversion is easy */
-		while ( ((lo_rate*2)/100) <= (hi_rate/100) ) {
-			cvt->filters[cvt->filter_index++] = rate_cvt;
-			cvt->len_mult *= len_mult;
-			lo_rate *= 2;
-			cvt->len_ratio *= len_ratio;
-		}
-		/* We may need a slow conversion here to finish up */
-		if ( (lo_rate/100) != (hi_rate/100) ) {
-#if 1
-			/* The problem with this is that if the input buffer is
-			   say 1K, and the conversion rate is say 1.1, then the
-			   output buffer is 1.1K, which may not be an acceptable
-			   buffer size for the audio driver (not a power of 2)
-			*/
-			/* For now, punt and hope the rate distortion isn't great.
-			*/
-#else
-			if ( src_rate < dst_rate ) {
-				cvt->rate_incr = (double)lo_rate/hi_rate;
-				cvt->len_mult *= 2;
-				cvt->len_ratio /= cvt->rate_incr;
-			} else {
-				cvt->rate_incr = (double)hi_rate/lo_rate;
-				cvt->len_ratio *= cvt->rate_incr;
-			}
-			cvt->filters[cvt->filter_index++] = SDL_RateSLOW;
-#endif
-		}
-	}
-
-	/* Set up the filter information */
-	if ( cvt->filter_index != 0 ) {
-		cvt->needed = 1;
-		cvt->src_format = src_format;
-		cvt->dst_format = dst_format;
-		cvt->len = 0;
-		cvt->buf = NULL;
-		cvt->filters[cvt->filter_index] = NULL;
-	}
-	return(cvt->needed);
-}
--- a/liboggplayer-src/src/SDL_audiocvt.hpp	Tue Aug 06 23:45:05 2013 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,49 +0,0 @@
-#pragma once
-
-#ifndef _WINDOWS
-	#include <stdint.h>
-#else
-	typedef signed   __int8 int8_t;
-	typedef unsigned __int8 uint8_t;
-	typedef signed   __int16 int16_t;
-	typedef unsigned __int16 uint16_t;
-	typedef signed   __int32 int32_t;
-	typedef unsigned __int32 uint32_t;
-#endif
-
-#include <stdlib.h>
-/* Audio format flags (defaults to LSB byte order) */
-#define AUDIO_U8	0x0008	/* Unsigned 8-bit samples */
-#define AUDIO_S8	0x8008	/* Signed 8-bit samples */
-#define AUDIO_U16LSB	0x0010	/* Unsigned 16-bit samples */
-#define AUDIO_S16LSB	0x8010	/* Signed 16-bit samples */
-#define AUDIO_U16MSB	0x1010	/* As above, but big-endian byte order */
-#define AUDIO_S16MSB	0x9010	/* As above, but big-endian byte order */
-#define AUDIO_U16	AUDIO_U16LSB
-#define AUDIO_S16	AUDIO_S16LSB
-
-typedef int8_t		Sint8;
-typedef uint8_t		Uint8;
-typedef int16_t		Sint16;
-typedef uint16_t	Uint16;
-typedef int32_t		Sint32;
-typedef uint32_t	Uint32;
-
-/* A structure to hold a set of audio conversion filters and buffers */
-struct SDL_AudioCVT {
-	int needed;			/* Set to 1 if conversion possible */
-	Uint16 src_format;		/* Source audio format */
-	Uint16 dst_format;		/* Target audio format */
-	double rate_incr;		/* Rate conversion increment */
-	Uint8 *buf;			/* Buffer to hold entire audio data */
-	int    len;			/* Length of original audio buffer */
-	int    len_cvt;			/* Length of converted audio buffer */
-	int    len_mult;		/* buffer must be len*len_mult big */
-	double len_ratio; 	/* Given len, final size is len*len_ratio */
-	void (*filters[10])(struct SDL_AudioCVT *cvt, Uint16 format);
-	int filter_index;		/* Current audio conversion function */
-};
-int SDL_BuildAudioCVT(SDL_AudioCVT *cvt,
-	Uint16 src_format, Uint8 src_channels, int src_rate,
-	Uint16 dst_format, Uint8 dst_channels, int dst_rate);
-int SDL_ConvertAudio(SDL_AudioCVT *cvt);