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Use anonymous namespace to mark internal functions

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Hannah von Reth
2021-08-23 09:18:23 +02:00
parent d7e9bc4c14
commit 0f106b1bbc
1 changed files with 24 additions and 21 deletions
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45
src/blurhash.cpp
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@@ -5,7 +5,9 @@
#include <vector> #include <vector>
static char chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{|}~"; namespace
{
const char chars[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz#$%*+,-.:;=?@[]^_{|}~";
struct Color { struct Color {
float r = 0; float r = 0;
@@ -13,7 +15,7 @@ struct Color {
float b = 0; float b = 0;
}; };
static inline int linearTosRGB(float value) inline int linearTosRGB(float value)
{ {
float v = fmaxf(0, fminf(1, value)); float v = fmaxf(0, fminf(1, value));
if (v <= 0.0031308) if (v <= 0.0031308)
@@ -22,7 +24,7 @@ static inline int linearTosRGB(float value)
return (1.055 * powf(v, 1 / 2.4) - 0.055) * 255 + 0.5; return (1.055 * powf(v, 1 / 2.4) - 0.055) * 255 + 0.5;
} }
static inline float sRGBToLinear(int value) inline float sRGBToLinear(int value)
{ {
float v = (float)value / 255; float v = (float)value / 255;
if (v <= 0.04045) if (v <= 0.04045)
@@ -31,12 +33,12 @@ static inline float sRGBToLinear(int value)
return powf((v + 0.055) / 1.055, 2.4); return powf((v + 0.055) / 1.055, 2.4);
} }
static inline float signPow(float value, float exp) inline float signPow(float value, float exp)
{ {
return copysignf(powf(fabsf(value), exp), value); return copysignf(powf(fabsf(value), exp), value);
} }
static inline uint8_t clampToUByte(int *src) inline uint8_t clampToUByte(int *src)
{ {
if (*src >= 0 && *src <= 255) { if (*src >= 0 && *src <= 255) {
return *src; return *src;
@@ -44,7 +46,7 @@ static inline uint8_t clampToUByte(int *src)
return (*src < 0) ? 0 : 255; return (*src < 0) ? 0 : 255;
} }
static inline uint8_t *createByteArray(int size) inline uint8_t *createByteArray(int size)
{ {
return (uint8_t *)malloc(size * sizeof(uint8_t)); return (uint8_t *)malloc(size * sizeof(uint8_t));
} }
@@ -68,21 +70,6 @@ int decodeToInt(const char *string, int start, int end)
return value; return value;
} }
bool isValidBlurhash(const char *blurhash)
{
const int hashLength = strlen(blurhash);
if (!blurhash || strlen(blurhash) < 6) {
return false;
}
int sizeFlag = decodeToInt(blurhash, 0, 1);
int numY = (int)floorf(sizeFlag / 9) + 1;
int numX = (sizeFlag % 9) + 1;
return hashLength == 4 + 2 * numX * numY;
}
void decodeDC(int value, Color *color) void decodeDC(int value, Color *color)
{ {
color->r = sRGBToLinear(value >> 16); color->r = sRGBToLinear(value >> 16);
@@ -178,6 +165,7 @@ int decodeToArray(const char *blurhash, int width, int height, int punch, int nC
} }
return 0; return 0;
} }
}
uint8_t *decode(const char *blurhash, int width, int height, int punch, int nChannels) uint8_t *decode(const char *blurhash, int width, int height, int punch, int nChannels)
{ {
@@ -189,3 +177,18 @@ uint8_t *decode(const char *blurhash, int width, int height, int punch, int nCha
} }
return pixelArray; return pixelArray;
} }
bool isValidBlurhash(const char *blurhash)
{
const int hashLength = strlen(blurhash);
if (!blurhash || strlen(blurhash) < 6) {
return false;
}
int sizeFlag = decodeToInt(blurhash, 0, 1);
int numY = (int)floorf(sizeFlag / 9) + 1;
int numX = (sizeFlag % 9) + 1;
return hashLength == 4 + 2 * numX * numY;
}