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audio: Fix range on float-to-int data clamping.

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I can't tell if there was a good reason for this or it was just me getting
numbers wrong due to exhaustion.
This commit is contained in:
Ryan C. Gordon 2018-05-15 01:40:05 -04:00
parent 7832cb652e
commit a07e5815a5
1 changed files with 4 additions and 4 deletions
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8
src/audio/SDL_audiotypecvt.c
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@ -174,7 +174,7 @@ SDL_Convert_F32_to_S8_Scalar(SDL_AudioCVT *cvt, SDL_AudioFormat format)
if (sample >= 1.0f) { if (sample >= 1.0f) {
*dst = 127; *dst = 127;
} else if (sample <= -1.0f) { } else if (sample <= -1.0f) {
*dst = -127; *dst = -128;
} else { } else {
*dst = (Sint8)(sample * 127.0f); *dst = (Sint8)(sample * 127.0f);
} }
@ -226,7 +226,7 @@ SDL_Convert_F32_to_S16_Scalar(SDL_AudioCVT *cvt, SDL_AudioFormat format)
if (sample >= 1.0f) { if (sample >= 1.0f) {
*dst = 32767; *dst = 32767;
} else if (sample <= -1.0f) { } else if (sample <= -1.0f) {
*dst = -32767; *dst = -32768;
} else { } else {
*dst = (Sint16)(sample * 32767.0f); *dst = (Sint16)(sample * 32767.0f);
} }
@ -250,7 +250,7 @@ SDL_Convert_F32_to_U16_Scalar(SDL_AudioCVT *cvt, SDL_AudioFormat format)
for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) { for (i = cvt->len_cvt / sizeof (float); i; --i, ++src, ++dst) {
const float sample = *src; const float sample = *src;
if (sample >= 1.0f) { if (sample >= 1.0f) {
*dst = 65534; *dst = 65535;
} else if (sample <= -1.0f) { } else if (sample <= -1.0f) {
*dst = 0; *dst = 0;
} else { } else {
@ -278,7 +278,7 @@ SDL_Convert_F32_to_S32_Scalar(SDL_AudioCVT *cvt, SDL_AudioFormat format)
if (sample >= 1.0f) { if (sample >= 1.0f) {
*dst = 2147483647; *dst = 2147483647;
} else if (sample <= -1.0f) { } else if (sample <= -1.0f) {
*dst = -2147483647; *dst = -2147483648;
} else { } else {
*dst = ((Sint32)(sample * 8388607.0f)) << 8; *dst = ((Sint32)(sample * 8388607.0f)) << 8;
} }