Singularity-Viewer/SingularityViewer
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix size estimation

Browse Source
This commit is contained in:
Siana Gearz
2012-03-26 19:53:04 +02:00
parent caaba76921
commit fee59e83b8
3 changed files with 26 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
indra/llimage/llimagej2c.cpp
View File

@@ -363,8 +363,7 @@ S32 LLImageJ2C::calcHeaderSizeJ2C()
return FIRST_PACKET_SIZE; // Hack. just needs to be >= actual header size...
}
//static
S32 LLImageJ2C::calcDataSizeJ2C(S32 w, S32 h, S32 comp, S32 discard_level, F32 rate)
static S32 cald_data_size_help(S32 w, S32 h, S32 comp, S32 discard_level, F32 rate)
{
if (rate <= 0.f) rate = .125f;
while (discard_level > 0)
@@ -376,10 +375,25 @@ S32 LLImageJ2C::calcDataSizeJ2C(S32 w, S32 h, S32 comp, S32 discard_level, F32 r
discard_level--;
}
S32 bytes = (S32)((F32)(w*h*comp)*rate);
//bytes = llmax(bytes, calcHeaderSizeJ2C());
return bytes;
}
//static
S32 LLImageJ2C::calcDataSizeJ2C(S32 w, S32 h, S32 comp, S32 discard_level, F32 rate)
{
static const LLCachedControl<F32> exponent("SianaJ2CSizeExponent", 1.0f);
static const LLCachedControl<S32> offset("SianaJ2CSizeOffset", 0);
S32 size = cald_data_size_help(w, h, comp, discard_level, rate);
S32 size_d0 = cald_data_size_help(w, h, comp, 0, rate);
llassert_always(size_d0);
S32 bytes = pow(size/size_d0, exponent)*size_d0 + offset;
bytes = llmax (0, bytes - 600);
bytes = ((bytes + (1000 - 1))/1000)*1000 + 600;
return bytes;
}
S32 LLImageJ2C::calcHeaderSize()
{
return calcHeaderSizeJ2C();
@@ -392,15 +406,7 @@ S32 LLImageJ2C::calcDataSize(S32 discard_level)
static const LLCachedControl<bool> legacy_size("SianaLegacyJ2CSize", false);
if (legacy_size) {
static const LLCachedControl<F32> exponent("SianaJ2CSizeExponent", 1.0f);
static const LLCachedControl<S32> offset("SianaJ2CSizeOffset", 0);
S32 size = calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), discard_level, mRate);
S32 size_d0 = calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), 0, mRate);
llassert_always(size_d0);
S32 bytes = pow(size/size_d0, exponent)*size_d0 + offset;
bytes = llmax(bytes, calcHeaderSizeJ2C());
return bytes;
return calcDataSizeJ2C(getWidth(), getHeight(), getComponents(), discard_level, mRate);
}
discard_level = llclamp(discard_level, 0, MAX_DISCARD_LEVEL);