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stb_image: Update comments.

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Fabian Giesen 2014-12-24 10:07:52 +01:00
parent 7f94e7e591
commit fb109abeaf
1 changed files with 5 additions and 10 deletions
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15
stb_image.h
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@ -13,7 +13,7 @@
Primarily of interest to game developers and other people who can
avoid problematic images and only need the trivial interface
JPEG baseline & progressive (no arithmetic)
JPEG baseline & progressive (12 bpc/arithmetic not supported, same as stock IJG lib)
PNG 1/2/4/8-bit-per-channel (16 bpc not supported)
TGA (not sure what subset, if a subset)
@ -197,9 +197,9 @@ License:
// DOCUMENTATION
//
// Limitations:
// - no jpeg progressive support
// - no 16-bit-per-channel PNG
// - no 12-bit-per-channel JPEG
// - no JPEGs with arithmetic coding
// - no 1-bit BMP
// - GIF always returns *comp=4
//
@ -669,6 +669,7 @@ static int stbi__sse2_available()
#ifdef STBI_NEON
#include <arm_neon.h>
// assume GCC or Clang on ARM targets
#define STBI_SIMD_ALIGN(type, name) type name __attribute__((aligned(16)))
#endif
@ -1293,10 +1294,9 @@ static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp)
//////////////////////////////////////////////////////////////////////////////
//
// "baseline" JPEG/JFIF decoder (not actually fully baseline implementation)
// "baseline" JPEG/JFIF decoder
//
// simple implementation
// - channel subsampling of at most 2 in each dimension
// - doesn't support delayed output of y-dimension
// - simple interface (only one output format: 8-bit interleaved RGB)
// - doesn't try to recover corrupt jpegs
@ -1310,13 +1310,8 @@ static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp)
// - quality integer IDCT derived from IJG's 'slow'
// performance
// - fast huffman; reasonable integer IDCT
// - some SIMD kernels for common paths on targets with SSE2/NEON
// - uses a lot of intermediate memory, could cache poorly
// - load http://nothings.org/remote/anemones.jpg 3 times on 2.8Ghz P4
// stb_jpeg: 1.34 seconds (MSVC6, default release build)
// stb_jpeg: 1.06 seconds (MSVC6, processor = Pentium Pro)
// IJL11.dll: 1.08 seconds (compiled by intel)
// IJG 1998: 0.98 seconds (MSVC6, makefile provided by IJG)
// IJG 1998: 0.95 seconds (MSVC6, makefile + proc=PPro)
#ifndef STBI_NO_JPEG