diff options
Diffstat (limited to 'indra/llimage')
| -rw-r--r-- | indra/llimage/llimage.h | 42 | ||||
| -rw-r--r-- | indra/llimage/llimagej2c.cpp | 27 |
2 files changed, 27 insertions, 42 deletions
diff --git a/indra/llimage/llimage.h b/indra/llimage/llimage.h index 42eecbb97c..8b966b8ea3 100644 --- a/indra/llimage/llimage.h +++ b/indra/llimage/llimage.h @@ -32,37 +32,37 @@ #include "llpointer.h" #include "lltrace.h" -const S32 MIN_IMAGE_MIP = 2; // 4x4, only used for expand/contract power of 2 -const S32 MAX_IMAGE_MIP = 12; // 4096x4096 +constexpr S32 MIN_IMAGE_MIP = 2; // 4x4, only used for expand/contract power of 2 +constexpr S32 MAX_IMAGE_MIP = 12; // 4096x4096 // *TODO : Use MAX_IMAGE_MIP as max discard level and modify j2c management so that the number // of levels is read from the header's file, not inferred from its size. -const S32 MAX_DISCARD_LEVEL = 5; +constexpr S32 MAX_DISCARD_LEVEL = 5; // JPEG2000 size constraints // Those are declared here as they are germane to other image constraints used in the viewer // and declared right here. Some come from the JPEG2000 spec, some conventions specific to SL. -const S32 MAX_DECOMPOSITION_LEVELS = 32; // Number of decomposition levels cannot exceed 32 according to jpeg2000 spec -const S32 MIN_DECOMPOSITION_LEVELS = 5; // the SL viewer will *crash* trying to decode images with fewer than 5 decomposition levels (unless image is small that is) -const S32 MAX_PRECINCT_SIZE = 4096; // No reason to be bigger than MAX_IMAGE_SIZE -const S32 MIN_PRECINCT_SIZE = 4; // Can't be smaller than MIN_BLOCK_SIZE -const S32 MAX_BLOCK_SIZE = 64; // Max total block size is 4096, hence 64x64 when using square blocks -const S32 MIN_BLOCK_SIZE = 4; // Min block dim is 4 according to jpeg2000 spec -const S32 MIN_LAYER_SIZE = 2000; // Size of the first quality layer (after header). Must be > to FIRST_PACKET_SIZE!! -const S32 MAX_NB_LAYERS = 64; // Max number of layers we'll entertain in SL (practical limit) - -const S32 MIN_IMAGE_SIZE = (1<<MIN_IMAGE_MIP); // 4, only used for expand/contract power of 2 -const S32 MAX_IMAGE_SIZE = (1<<MAX_IMAGE_MIP); // 4096 -const S32 MIN_IMAGE_AREA = MIN_IMAGE_SIZE * MIN_IMAGE_SIZE; -const S32 MAX_IMAGE_AREA = MAX_IMAGE_SIZE * MAX_IMAGE_SIZE; -const S32 MAX_IMAGE_COMPONENTS = 8; -const S32 MAX_IMAGE_DATA_SIZE = MAX_IMAGE_AREA * MAX_IMAGE_COMPONENTS; //4096 * 4096 * 8 = 128 MB +constexpr S32 MAX_DECOMPOSITION_LEVELS = 32; // Number of decomposition levels cannot exceed 32 according to jpeg2000 spec +constexpr S32 MIN_DECOMPOSITION_LEVELS = 5; // the SL viewer will *crash* trying to decode images with fewer than 5 decomposition levels (unless image is small that is) +constexpr S32 MAX_PRECINCT_SIZE = 4096; // No reason to be bigger than MAX_IMAGE_SIZE +constexpr S32 MIN_PRECINCT_SIZE = 4; // Can't be smaller than MIN_BLOCK_SIZE +constexpr S32 MAX_BLOCK_SIZE = 64; // Max total block size is 4096, hence 64x64 when using square blocks +constexpr S32 MIN_BLOCK_SIZE = 4; // Min block dim is 4 according to jpeg2000 spec +constexpr S32 MIN_LAYER_SIZE = 2000; // Size of the first quality layer (after header). Must be > to FIRST_PACKET_SIZE!! +constexpr S32 MAX_NB_LAYERS = 64; // Max number of layers we'll entertain in SL (practical limit) + +constexpr S32 MIN_IMAGE_SIZE = (1<<MIN_IMAGE_MIP); // 4, only used for expand/contract power of 2 +constexpr S32 MAX_IMAGE_SIZE = (1<<MAX_IMAGE_MIP); // 4096 +constexpr S32 MIN_IMAGE_AREA = MIN_IMAGE_SIZE * MIN_IMAGE_SIZE; +constexpr S32 MAX_IMAGE_AREA = MAX_IMAGE_SIZE * MAX_IMAGE_SIZE; +constexpr S32 MAX_IMAGE_COMPONENTS = 8; +constexpr S32 MAX_IMAGE_DATA_SIZE = MAX_IMAGE_AREA * MAX_IMAGE_COMPONENTS; //4096 * 4096 * 8 = 128 MB // Note! These CANNOT be changed without modifying simulator code // *TODO: change both to 1024 when SIM texture fetching is deprecated -const S32 FIRST_PACKET_SIZE = 600; -const S32 MAX_IMG_PACKET_SIZE = 1000; -const S32 HTTP_PACKET_SIZE = 1496; +constexpr S32 FIRST_PACKET_SIZE = 600; +constexpr S32 MAX_IMG_PACKET_SIZE = 1000; +constexpr S32 HTTP_PACKET_SIZE = 1496; // Base classes for images. // There are two major parts for the image: diff --git a/indra/llimage/llimagej2c.cpp b/indra/llimage/llimagej2c.cpp index 5dfd8cd947..42f3e92257 100644 --- a/indra/llimage/llimagej2c.cpp +++ b/indra/llimage/llimagej2c.cpp @@ -275,39 +275,24 @@ S32 LLImageJ2C::calcDataSizeJ2C(S32 w, S32 h, S32 comp, S32 discard_level, F32 r // For details about the equation used here, see https://wiki.lindenlab.com/wiki/THX1138_KDU_Improvements#Byte_Range_Study // Estimate the number of layers. This is consistent with what's done for j2c encoding in LLImageJ2CKDU::encodeImpl(). + constexpr S32 precision = 8; // assumed bitrate per component channel, might change in future for HDR support + constexpr S32 max_components = 4; // assumed the file has four components; three color and alpha S32 nb_layers = 1; - S32 surface = w*h; + const S32 surface = w*h; S32 s = 64*64; - S32 precision = 8; // assumed bitrate per component channel, might change in future for HDR support - S32 totalbytes = (S32)(s * comp * precision * rate); // first level computed before loop + S32 totalbytes = (S32)(s * max_components * precision * rate); // first level computed before loop while (surface > s) { if (nb_layers <= (5 - discard_level)) - totalbytes += (S32)(s * comp * precision * rate); + totalbytes += (S32)(s * max_components * precision * rate); nb_layers++; s *= 4; } - F32 layer_factor = 3.0f * (7 - llclamp(nb_layers,1,6)); totalbytes /= 8; // to bytes totalbytes += calcHeaderSizeJ2C(); // header - // Compute w/pow(2,discard_level) and h/pow(2,discard_level) - w >>= discard_level; - h >>= discard_level; - w = llmax(w, 1); - h = llmax(h, 1); - - // Temporary: compute both new and old range and pick one according to the settings TextureNewByteRange - // *TODO: Take the old code out once we have enough tests done - S32 bytes; - S32 new_bytes = (S32) (sqrt((F32)(w*h))*(F32)(comp)*rate*1000.f/layer_factor); - S32 old_bytes = (S32)((F32)(w*h*comp)*rate); - bytes = (LLImage::useNewByteRange() && (new_bytes < old_bytes) ? new_bytes : old_bytes); - bytes = llmax(totalbytes, calcHeaderSizeJ2C()); - //LL_WARNS() << "calcDataSizeJ2C w-h-c-d-p " << w << "-" << h << "-" << comp << "-" << discard_level << "-" << precision - // << " Pyramid: " << (S32)totalbytes << " LayerFactored: " << new_bytes << " WJCR: " << old_bytes << LL_ENDL; - return bytes; + return totalbytes; } S32 LLImageJ2C::calcHeaderSize() |