diff options
| -rw-r--r-- | indra/llkdu/llimagej2ckdu.cpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/indra/llkdu/llimagej2ckdu.cpp b/indra/llkdu/llimagej2ckdu.cpp index 2adb90320c..1201170f6d 100644 --- a/indra/llkdu/llimagej2ckdu.cpp +++ b/indra/llkdu/llimagej2ckdu.cpp @@ -202,6 +202,10 @@ LLImageJ2CKDU::~LLImageJ2CKDU() // Stuff for new simple decode void transfer_bytes(kdu_byte *dest, kdu_line_buf &src, int gap, int precision); +// This is called by the real (private) initDecode() (keep_codestream true) +// and getMetadata() methods (keep_codestream false). As far as nat can tell, +// mode is always MODE_FAST. It was called by findDiscardLevelsBoundaries() +// as well, when that still existed, with keep_codestream true and MODE_FAST. void LLImageJ2CKDU::setupCodeStream(LLImageJ2C &base, bool keep_codestream, ECodeStreamMode mode) { S32 data_size = base.getDataSize(); @@ -212,6 +216,12 @@ void LLImageJ2CKDU::setupCodeStream(LLImageJ2C &base, bool keep_codestream, ECod // mCodeStreamp.reset(); + // It's not clear to nat under what circumstances we would reuse a + // pre-existing LLKDUMemSource instance. As of 2016-08-05, it consists of + // two U32s and a pointer, so it's not as if it would be a huge overhead + // to allocate a new one every time. + // Also -- why is base.getData() tested specifically here? If that returns + // NULL, shouldn't we bail out of the whole method? if (!mInputp && base.getData()) { // The compressed data has been loaded @@ -301,6 +311,9 @@ void LLImageJ2CKDU::cleanupCodeStream() mTileIndicesp.reset(); } +// This is the protected virtual method called by LLImageJ2C::initDecode(). +// However, as far as nat can tell, LLImageJ2C::initDecode() is called only by +// llimage_libtest.cpp's load_image() function. No detectable production use. bool LLImageJ2CKDU::initDecode(LLImageJ2C &base, LLImageRaw &raw_image, int discard_level, int* region) { return initDecode(base,raw_image,0.0f,MODE_FAST,0,4,discard_level,region); @@ -333,6 +346,9 @@ bool LLImageJ2CKDU::initEncode(LLImageJ2C &base, LLImageRaw &raw_image, int bloc return true; } +// This is the real (private) initDecode() called both by the protected +// initDecode() method and by decodeImpl(). As far as nat can tell, only the +// decodeImpl() usage matters for production. bool LLImageJ2CKDU::initDecode(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, ECodeStreamMode mode, S32 first_channel, S32 max_channel_count, int discard_level, int* region) { base.resetLastError(); |