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Use FileStream to write JPG images to disk

This commit is contained in:
rh101 2021-04-22 21:36:26 +10:00
parent 684a0faf76
commit 15c8f2298d
1 changed files with 25 additions and 6 deletions
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31
cocos/platform/CCImage.cpp
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@ -2319,7 +2319,7 @@ bool Image::saveImageToJPG(const std::string& filePath)
{
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
FILE * outfile; /* target file */
FileStream * outfile; /* target file */
JSAMPROW row_pointer[1]; /* pointer to JSAMPLE row[s] */
int row_stride; /* physical row width in image buffer */
@ -2327,9 +2327,12 @@ bool Image::saveImageToJPG(const std::string& filePath)
/* Now we can initialize the JPEG compression object. */
jpeg_create_compress(&cinfo);
CC_BREAK_IF((outfile = fopen(filePath.c_str(), "wb")) == nullptr);
jpeg_stdio_dest(&cinfo, outfile);
outfile = FileUtils::getInstance()->openFileStream(filePath, FileStream::Mode::WRITE);
CC_BREAK_IF((outfile == nullptr || !outfile->isOpen()));
unsigned char* outputBuffer = nullptr;
unsigned long outputSize = 0;
jpeg_mem_dest(&cinfo, &outputBuffer, &outputSize);
cinfo.image_width = _width; /* image width and height, in pixels */
cinfo.image_height = _height;
@ -2350,7 +2353,14 @@ bool Image::saveImageToJPG(const std::string& filePath)
{
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
fclose(outfile);
delete outfile;
outfile = nullptr;
if (outputBuffer)
{
free(outputBuffer);
outputBuffer = nullptr;
}
break;
}
@ -2385,7 +2395,16 @@ bool Image::saveImageToJPG(const std::string& filePath)
}
jpeg_finish_compress(&cinfo);
fclose(outfile);
outfile->write(outputBuffer, outputSize);
delete outfile; // closes FileStream automatically
outfile = nullptr;
if (outputBuffer)
{
free(outputBuffer);
outputBuffer = nullptr;
}
jpeg_destroy_compress(&cinfo);
ret = true;