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comparison src/audio/sdlgenaudiocvt.pl @ 4889:8c9cbb623d55

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Fixed crashing loading 48KHz audio, contributed by Terry Welsh
author Sam Lantinga <slouken@libsdl.org>
date Sat, 18 Sep 2010 18:15:08 -0700
parents bfa8d34ce03a
children b530ef003506
comparison
equal deleted inserted replaced
4887:0a77d2fc95ad 4889:8c9cbb623d55
36 sub outputHeader { 36 sub outputHeader {
37 print <<EOF; 37 print <<EOF;
38 /* DO NOT EDIT! This file is generated by sdlgenaudiocvt.pl */ 38 /* DO NOT EDIT! This file is generated by sdlgenaudiocvt.pl */
39 /* 39 /*
40 SDL - Simple DirectMedia Layer 40 SDL - Simple DirectMedia Layer
41 Copyright (C) 1997-2009 Sam Lantinga 41 Copyright (C) 1997-2010 Sam Lantinga
42 42
43 This library is free software; you can redistribute it and/or 43 This library is free software; you can redistribute it and/or
44 modify it under the terms of the GNU Lesser General Public 44 modify it under the terms of the GNU Lesser General Public
45 License as published by the Free Software Foundation; either 45 License as published by the Free Software Foundation; either
46 version 2.1 of the License, or (at your option) any later version. 46 version 2.1 of the License, or (at your option) any later version.
398 const int srcsize = cvt->len_cvt - $fudge; 398 const int srcsize = cvt->len_cvt - $fudge;
399 const int dstsize = (int) (((double)cvt->len_cvt) * cvt->rate_incr); 399 const int dstsize = (int) (((double)cvt->len_cvt) * cvt->rate_incr);
400 register int eps = 0; 400 register int eps = 0;
401 EOF 401 EOF
402 402
403 my $endcomparison = '!=';
404
403 # Upsampling (growing the buffer) needs to work backwards, since we 405 # Upsampling (growing the buffer) needs to work backwards, since we
404 # overwrite the buffer as we go. 406 # overwrite the buffer as we go.
405 if ($upsample) { 407 if ($upsample) {
408 $endcomparison = '>'; # dst > target
406 print <<EOF; 409 print <<EOF;
407 $fctype *dst = (($fctype *) (cvt->buf + dstsize)) - $channels; 410 $fctype *dst = (($fctype *) (cvt->buf + dstsize)) - $channels;
408 const $fctype *src = (($fctype *) (cvt->buf + cvt->len_cvt)) - $channels; 411 const $fctype *src = (($fctype *) (cvt->buf + cvt->len_cvt)) - $channels;
409 const $fctype *target = ((const $fctype *) cvt->buf) - $channels; 412 const $fctype *target = ((const $fctype *) cvt->buf) - $channels;
410 EOF 413 EOF
411 } else { 414 } else {
415 $endcomparison = '<'; # dst < target
412 print <<EOF; 416 print <<EOF;
413 $fctype *dst = ($fctype *) cvt->buf; 417 $fctype *dst = ($fctype *) cvt->buf;
414 const $fctype *src = ($fctype *) cvt->buf; 418 const $fctype *src = ($fctype *) cvt->buf;
415 const $fctype *target = (const $fctype *) (cvt->buf + dstsize); 419 const $fctype *target = (const $fctype *) (cvt->buf + dstsize);
416 EOF 420 EOF
430 $fctype last_sample${idx} = sample${idx}; 434 $fctype last_sample${idx} = sample${idx};
431 EOF 435 EOF
432 } 436 }
433 437
434 print <<EOF; 438 print <<EOF;
435 while (dst != target) { 439 while (dst $endcomparison target) {
436 EOF 440 EOF
437 441
438 if ($upsample) { 442 if ($upsample) {
439 for (my $i = 0; $i < $channels; $i++) { 443 for (my $i = 0; $i < $channels; $i++) {
440 # !!! FIXME: don't do this swap every write, just when the samples change. 444 # !!! FIXME: don't do this swap every write, just when the samples change.