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Allow AudioAnalyzer to have seperate outputs

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This commit is contained in:
Ralty
2025-07-13 22:03:11 +07:00
parent 2ead99cdf4
commit a3ae8a70d4
1 changed files with 29 additions and 7 deletions
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source/funkin/backend/utils/AudioAnalyzer.hx
+29 -7
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@@ -34,20 +34,29 @@ class AudioAnalyzer {
#end
}
public function analyze(startPos:Float, endPos:Float):Float {
if (buffer.data != null) return __analyze(startPos, endPos);
public function analyze(startPos:Float, endPos:Float, ?outSeperate:Array<Float>):Float {
if (buffer.data != null) return __analyze(startPos, endPos, outSeperate);
#if lime_vorbis
else if (__prepareVorbis()) return __analyzeVorbis(startPos, endPos);
else if (__prepareVorbis()) return __analyzeVorbis(startPos, endPos, outSeperate);
#end
return 0;
}
inline function __analyze(startPos:Float, endPos:Float):Float {
inline function __analyze(startPos:Float, endPos:Float, ?outSeperate:Array<Float>):Float {
var pos = Math.floor(startPos * __toBits), end = Math.floor(endPos * __toBits), buf = #if js buffer.data #else buffer.data.buffer #end;
var max = 0, b = 0;
var max = 0, b = 0, c = 0, useSeperate = outSeperate != null;
if (useSeperate) {
while (c < outSeperate.length) outSeperate[c++] *= __bitSize;
while (c++ < buffer.channels) outSeperate.push(0);
c = 0;
}
if (__wordSize == 1) { // 8-bit audio data is unsigned (0 is 128, 128 is 256, -128 is 0)
while (pos < end) {
if (max < (b = #if js buf[pos] #else buf.get(pos) #end - __bitSize)) max = b;
if (useSeperate) {
if (outSeperate[c] < b) outSeperate[c] = b;
if (++c > buffer.channels) c = 0;
}
pos++;
}
}
@@ -64,6 +73,10 @@ class AudioAnalyzer {
}
if (b > __bitSize) b -= __bitUnsignedSize;
if (max < b) max = b;
if (useSeperate) {
if (outSeperate[c] < b) outSeperate[c] = b;
if (++c > buffer.channels) c = 0;
}
w = b = 0;
}
}
@@ -84,7 +97,7 @@ class AudioAnalyzer {
}
var prevPos:Int = 0;
inline function __analyzeVorbis(startPos:Float, endPos:Float):Float {
inline function __analyzeVorbis(startPos:Float, endPos:Float, ?outSeperate:Array<Float>):Float {
var n = Math.floor((endPos - startPos) * __toBits);
if (n < __wordSize) return 0;
@@ -96,7 +109,12 @@ class AudioAnalyzer {
}
var isBigEndian = lime.system.System.endianness == lime.system.Endian.BIG_ENDIAN, bufferSize = __buffer.length;
var max = 0, b = 0, pos = 0, w = 0, result;
var max = 0, b = 0, c = 0, useSeperate = outSeperate != null, pos = 0, w = 0, result;
if (useSeperate) {
while (c < outSeperate.length) outSeperate[c++] *= __bitSize;
while (c++ < buffer.channels) outSeperate.push(0);
c = 0;
}
while (n > 0) {
n -= (result = __vorbis.read(__buffer, 0, n < bufferSize ? n : bufferSize, isBigEndian, __wordSize, true));
@@ -111,6 +129,10 @@ class AudioAnalyzer {
}
if (b > __bitSize) b -= __bitUnsignedSize;
if (max < b) max = b;
if (useSeperate) {
if (outSeperate[c] < b) outSeperate[c] = b;
if (++c > buffer.channels) c = 0;
}
w = b = 0;
}
pos = 0;