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authorChris Robinson <[email protected]>2010-12-01 14:19:57 -0800
committerChris Robinson <[email protected]>2010-12-01 14:19:57 -0800
commit14441e0e5377884100ed0d3ae3bb753632b896ae (patch)
tree930dc89bcba54090d903470c57cfdbc4b6177fcd /OpenAL32/alBuffer.c
parent7f5814c4d8c9c520833f84fe86ecca38d3900171 (diff)
Rename some variables
Diffstat (limited to 'OpenAL32/alBuffer.c')
-rw-r--r--OpenAL32/alBuffer.c56
1 files changed, 28 insertions, 28 deletions
diff --git a/OpenAL32/alBuffer.c b/OpenAL32/alBuffer.c
index d34aa3b1..cbfc843c 100644
--- a/OpenAL32/alBuffer.c
+++ b/OpenAL32/alBuffer.c
@@ -46,7 +46,7 @@ static void ConvertDataIMA4(ALvoid *dst, enum FmtType dstType, const ALvoid *src
*/
/* IMA ADPCM Stepsize table */
-static const long g_IMAStep_size[89] = {
+static const long IMAStep_size[89] = {
7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 19,
21, 23, 25, 28, 31, 34, 37, 41, 45, 50, 55,
60, 66, 73, 80, 88, 97, 107, 118, 130, 143, 157,
@@ -59,13 +59,13 @@ static const long g_IMAStep_size[89] = {
};
/* IMA4 ADPCM Codeword decode table */
-static const long g_IMACodeword_4[16] = {
+static const long IMA4Codeword[16] = {
1, 3, 5, 7, 9, 11, 13, 15,
-1,-3,-5,-7,-9,-11,-13,-15,
};
/* IMA4 ADPCM Step index adjust decode table */
-static const long g_IMAIndex_adjust_4[16] = {
+static const long IMA4Index_adjust[16] = {
-1,-1,-1,-1, 2, 4, 6, 8,
-1,-1,-1,-1, 2, 4, 6, 8
};
@@ -855,25 +855,25 @@ static ALmulaw EncodeMuLaw(ALshort val)
return ~(sign | (exp<<4) | mant);
}
-static void DecodeIMA4Block(ALshort *dst, const ALubyte *IMAData, ALint numchans)
+static void DecodeIMA4Block(ALshort *dst, const ALubyte *src, ALint numchans)
{
- ALint Sample[2],Index[2];
- ALuint IMACode[2];
+ ALint sample[2], index[2];
+ ALuint code[2];
ALsizei j,k,c;
for(c = 0;c < numchans;c++)
{
- Sample[c] = *(IMAData++);
- Sample[c] |= *(IMAData++) << 8;
- Sample[c] = (Sample[c]^0x8000) - 32768;
- Index[c] = *(IMAData++);
- Index[c] |= *(IMAData++) << 8;
- Index[c] = (Index[c]^0x8000) - 32768;
+ sample[c] = *(src++);
+ sample[c] |= *(src++) << 8;
+ sample[c] = (sample[c]^0x8000) - 32768;
+ index[c] = *(src++);
+ index[c] |= *(src++) << 8;
+ index[c] = (index[c]^0x8000) - 32768;
- Index[c] = max(0, Index[c]);
- Index[c] = min(Index[c], 88);
+ index[c] = max(0, index[c]);
+ index[c] = min(index[c], 88);
- dst[c] = Sample[c];
+ dst[c] = sample[c];
}
j = 1;
@@ -881,28 +881,28 @@ static void DecodeIMA4Block(ALshort *dst, const ALubyte *IMAData, ALint numchans
{
for(c = 0;c < numchans;c++)
{
- IMACode[c] = *(IMAData++);
- IMACode[c] |= *(IMAData++) << 8;
- IMACode[c] |= *(IMAData++) << 16;
- IMACode[c] |= *(IMAData++) << 24;
+ code[c] = *(src++);
+ code[c] |= *(src++) << 8;
+ code[c] |= *(src++) << 16;
+ code[c] |= *(src++) << 24;
}
for(k = 0;k < 8;k++,j++)
{
for(c = 0;c < numchans;c++)
{
- Sample[c] += g_IMAStep_size[Index[c]] *
- g_IMACodeword_4[IMACode[c]&15] / 8;
- Index[c] += g_IMAIndex_adjust_4[IMACode[c]&15];
+ int nibble = code[c]&0xf;
+ code[c] >>= 4;
- Sample[c] = max(-32768, Sample[c]);
- Sample[c] = min(Sample[c], 32767);
+ sample[c] += IMA4Codeword[nibble] * IMAStep_size[index[c]] / 8;
+ sample[c] = max(-32768, sample[c]);
+ sample[c] = min(sample[c], 32767);
- Index[c] = max(0, Index[c]);
- Index[c] = min(Index[c], 88);
+ index[c] += IMA4Index_adjust[nibble];
+ index[c] = max(0, index[c]);
+ index[c] = min(index[c], 88);
- dst[j*numchans + c] = Sample[c];
- IMACode[c] >>= 4;
+ dst[j*numchans + c] = sample[c];
}
}
}