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Update libwebp to 0.6.0

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This commit is contained in:
volzhs
2017-02-17 23:49:40 +09:00
parent d5c2a6b76b
commit f7ef78c998
139 changed files with 10209 additions and 3709 deletions
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50
thirdparty/libwebp/utils/utils.h vendored
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@@ -62,7 +62,6 @@ WEBP_EXTERN(void) WebPSafeFree(void* const ptr);
#define WEBP_ALIGN_CST 31
#define WEBP_ALIGN(PTR) (((uintptr_t)(PTR) + WEBP_ALIGN_CST) & ~WEBP_ALIGN_CST)
#if defined(WEBP_FORCE_ALIGNED)
#include <string.h>
// memcpy() is the safe way of moving potentially unaligned 32b memory.
static WEBP_INLINE uint32_t WebPMemToUint32(const uint8_t* const ptr) {
@@ -73,16 +72,6 @@ static WEBP_INLINE uint32_t WebPMemToUint32(const uint8_t* const ptr) {
static WEBP_INLINE void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) {
memcpy(ptr, &val, sizeof(val));
}
#else
static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE
uint32_t WebPMemToUint32(const uint8_t* const ptr) {
return *(const uint32_t*)ptr;
}
static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE
void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) {
*(uint32_t*)ptr = val;
}
#endif
//------------------------------------------------------------------------------
// Reading/writing data.
@@ -118,6 +107,19 @@ static WEBP_INLINE void PutLE32(uint8_t* const data, uint32_t val) {
PutLE16(data + 2, (int)(val >> 16));
}
// Returns 31 ^ clz(n) = log2(n). This is the default C-implementation, either
// based on table or not. Can be used as fallback if clz() is not available.
#define WEBP_NEED_LOG_TABLE_8BIT
extern const uint8_t WebPLogTable8bit[256];
static WEBP_INLINE int WebPLog2FloorC(uint32_t n) {
int log = 0;
while (n >= 256) {
log += 8;
n >>= 8;
}
return log + WebPLogTable8bit[n];
}
// Returns (int)floor(log2(n)). n must be > 0.
// use GNU builtins where available.
#if defined(__GNUC__) && \
@@ -135,22 +137,8 @@ static WEBP_INLINE int BitsLog2Floor(uint32_t n) {
_BitScanReverse(&first_set_bit, n);
return first_set_bit;
}
#else
static WEBP_INLINE int BitsLog2Floor(uint32_t n) {
int log = 0;
uint32_t value = n;
int i;
for (i = 4; i >= 0; --i) {
const int shift = (1 << i);
const uint32_t x = value >> shift;
if (x != 0) {
value = x;
log += shift;
}
}
return log;
}
#else // default: use the C-version.
static WEBP_INLINE int BitsLog2Floor(uint32_t n) { return WebPLog2FloorC(n); }
#endif
//------------------------------------------------------------------------------
@@ -172,12 +160,12 @@ WEBP_EXTERN(void) WebPCopyPixels(const struct WebPPicture* const src,
// Unique colors.
// Returns count of unique colors in 'pic', assuming pic->use_argb is true.
// If the unique color count is more than MAX_COLOR_COUNT, returns
// MAX_COLOR_COUNT+1.
// If the unique color count is more than MAX_PALETTE_SIZE, returns
// MAX_PALETTE_SIZE+1.
// If 'palette' is not NULL and number of unique colors is less than or equal to
// MAX_COLOR_COUNT, also outputs the actual unique colors into 'palette'.
// MAX_PALETTE_SIZE, also outputs the actual unique colors into 'palette'.
// Note: 'palette' is assumed to be an array already allocated with at least
// MAX_COLOR_COUNT elements.
// MAX_PALETTE_SIZE elements.
WEBP_EXTERN(int) WebPGetColorPalette(const struct WebPPicture* const pic,
uint32_t* const palette);