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visualboyadvance-m
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Replace `libpng` code for `stb_image` one. 

It is a very straightforward replacement calls.
This commit is contained in:
Edênis Freindorfer Azevedo 2020-02-29 21:08:58 -03:00 committed by Rafael Kitover
parent 8f48c1f01d
commit 513af13ddc
1 changed files with 62 additions and 111 deletions
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173
src/Util.cpp
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@ -13,11 +13,17 @@
#include <zlib.h>
#ifndef NO_PNG
#define STB_IMAGE_IMPLEMENTATION
extern "C" {
#include <png.h>
#include "../headers/stb/stb_image.h"
}
#define STBI_MSC_SECURE_CRT
#define STB_IMAGE_WRITE_IMPLEMENTATION
extern "C" {
#include "../headers/stb/stb_image_write.h"
}
#endif
#include "NLS.h"
#include "System.h"
@ -179,127 +185,72 @@ void utilReadScreenPixels(uint8_t *dest, int w, int h)
}
}
#define CHANNEL_NUM 3 // RGB
bool utilWritePNGFile(const char *fileName, int w, int h, uint8_t *pix)
{
#ifndef NO_PNG
uint8_t writeBuffer[512 * 3];
FILE *fp = fopen(fileName, "wb");
if (!fp) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);
return false;
}
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr) {
fclose(fp);
return false;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if (!info_ptr) {
png_destroy_write_struct(&png_ptr, NULL);
fclose(fp);
return false;
}
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct(&png_ptr, NULL);
fclose(fp);
return false;
}
png_init_io(png_ptr, fp);
png_set_IHDR(png_ptr,
info_ptr,
w,
h,
8,
PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_write_info(png_ptr, info_ptr);
uint8_t writeBuffer[512 * CHANNEL_NUM];
uint8_t *b = writeBuffer;
int sizeX = w;
int sizeY = h;
switch (systemColorDepth) {
case 16: {
uint16_t *p = (uint16_t *)(pix + (w + 2) * 2); // skip first black line
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint16_t v = *p++;
switch (systemColorDepth)
{
case 16: {
uint16_t *p = (uint16_t *)(pix + (w + 2) * 2); // skip first black line
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint16_t v = *p++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
png_write_row(png_ptr, writeBuffer);
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
b = writeBuffer;
}
} break;
case 24: {
uint8_t *pixU8 = (uint8_t *)pix;
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
if (systemRedShift < systemBlueShift) {
*b++ = *pixU8++; // R
*b++ = *pixU8++; // G
*b++ = *pixU8++; // B
} else {
int blue = *pixU8++;
int green = *pixU8++;
int red = *pixU8++;
b = writeBuffer;
}
} break;
case 24: {
uint8_t *pixU8 = (uint8_t *)pix;
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
if (systemRedShift < systemBlueShift) {
*b++ = *pixU8++; // R
*b++ = *pixU8++; // G
*b++ = *pixU8++; // B
} else {
int blue = *pixU8++;
int green = *pixU8++;
int red = *pixU8++;
*b++ = red;
*b++ = green;
*b++ = blue;
}
}
b = writeBuffer;
}
} break;
case 32: {
uint32_t *pixU32 = (uint32_t *)(pix + 4 * (w + 1));
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint32_t v = *pixU32++;
*b++ = red;
*b++ = green;
*b++ = blue;
}
}
png_write_row(png_ptr, writeBuffer);
b = writeBuffer;
}
} break;
case 32: {
uint32_t *pixU32 = (uint32_t *)(pix + 4 * (w + 1));
for (int y = 0; y < sizeY; y++) {
for (int x = 0; x < sizeX; x++) {
uint32_t v = *pixU32++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
}
pixU32++;
png_write_row(png_ptr, writeBuffer);
b = writeBuffer;
}
} break;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
}
pixU32++;
b = writeBuffer;
}
} break;
}
png_write_end(png_ptr, info_ptr);
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
return true;
#else
return false;
#endif
return (0 != stbi_write_png(fileName, w, h, CHANNEL_NUM, writeBuffer, w * CHANNEL_NUM));
}
void utilPutDword(uint8_t *p, uint32_t value)