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most likely fixed downsampling bugs

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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3720 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
beveloper 2003-06-28 21:55:58 +00:00
parent a7699ce227
commit 6b5e150832
2 changed files with 55 additions and 102 deletions
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155
src/add-ons/media/media-add-ons/mixer/Resampler.cpp
View File

@ -101,7 +101,7 @@ Resampler::float_to_float(const void *_src, int32 src_sample_offset, int32 src_s
*(float *)dst = *(const float *)src * gain;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -110,16 +110,11 @@ Resampler::float_to_float(const void *_src, int32 src_sample_offset, int32 src_s
// downsample
while (count--) {
*(float *)dst = *(const float *)src * gain;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -152,7 +147,7 @@ Resampler::int32_to_float(const void *_src, int32 src_sample_offset, int32 src_s
*(float *)dst = *(const int32 *)src * gain;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -161,16 +156,11 @@ Resampler::int32_to_float(const void *_src, int32 src_sample_offset, int32 src_s
// downsample
while (count--) {
*(float *)dst = *(const int32 *)src * gain;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -203,7 +193,7 @@ Resampler::int16_to_float(const void *_src, int32 src_sample_offset, int32 src_s
*(float *)dst = *(const int16 *)src * gain;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -212,16 +202,11 @@ Resampler::int16_to_float(const void *_src, int32 src_sample_offset, int32 src_s
// downsample
while (count--) {
*(float *)dst = *(const int16 *)src * gain;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -254,7 +239,7 @@ Resampler::int8_to_float(const void *_src, int32 src_sample_offset, int32 src_sa
*(float *)dst = *(const int8 *)src * gain;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -263,16 +248,11 @@ Resampler::int8_to_float(const void *_src, int32 src_sample_offset, int32 src_sa
// downsample
while (count--) {
*(float *)dst = *(const int8 *)src * gain;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -305,7 +285,7 @@ Resampler::uint8_to_float(const void *_src, int32 src_sample_offset, int32 src_s
*(float *)dst = (((int32) *(const uint8 *)src) - 128) * gain;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -314,16 +294,11 @@ Resampler::uint8_to_float(const void *_src, int32 src_sample_offset, int32 src_s
// downsample
while (count--) {
*(float *)dst = (((int32) *(const uint8 *)src) - 128) * gain;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -368,7 +343,7 @@ Resampler::float_to_int32(const void *_src, int32 src_sample_offset, int32 src_s
*(int32 *)dst = (int32)sample;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -383,16 +358,11 @@ Resampler::float_to_int32(const void *_src, int32 src_sample_offset, int32 src_s
*(int32 *)dst = -2147483647L;
else
*(int32 *)dst = (int32)sample;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -437,7 +407,7 @@ Resampler::float_to_int16(const void *_src, int32 src_sample_offset, int32 src_s
*(int16 *)dst = (int16)sample;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -452,16 +422,11 @@ Resampler::float_to_int16(const void *_src, int32 src_sample_offset, int32 src_s
*(int16 *)dst = -32767;
else
*(int16 *)dst = (int16)sample;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -506,7 +471,7 @@ Resampler::float_to_int8(const void *_src, int32 src_sample_offset, int32 src_sa
*(int8 *)dst = (int8)sample;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -521,16 +486,11 @@ Resampler::float_to_int8(const void *_src, int32 src_sample_offset, int32 src_sa
*(int8 *)dst = -127;
else
*(int8 *)dst = (int8)sample;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}
@ -575,7 +535,7 @@ Resampler::float_to_uint8(const void *_src, int32 src_sample_offset, int32 src_s
*(uint8 *)dst = (uint8)sample;
dst += dst_sample_offset;
current += delta;
if (current > 1.0f) {
if (current >= 1.0f) {
current -= 1.0f;
src += src_sample_offset;
}
@ -590,18 +550,11 @@ Resampler::float_to_uint8(const void *_src, int32 src_sample_offset, int32 src_s
*(uint8 *)dst = 1;
else
*(uint8 *)dst = (uint8)sample;
src += src_sample_offset;
current += delta; // delta is always > 1.0
if (current < 2.0f) {
current -= 1.0f;
dst += dst_sample_offset;
} else {
int32 inc_count = (int32) current;
current -= (float) inc_count;
dst += inc_count * dst_sample_offset;
}
dst += dst_sample_offset;
current += delta;
register int32 skipcount = (int32)current;
current -= skipcount;
src += skipcount * src_sample_offset;
}
}
}

2
src/add-ons/media/media-add-ons/mixer/Resampler.h
View File

@ -1,6 +1,6 @@
#ifndef _RESAMPLER_H
#define _RESAMPLER_H
#include <stdio.h>
/* Copyright (C) 2003 Marcus Overhagen
* Released under terms of the MIT license.
*