Initial commit

outputImage.cpp

@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include "outputImage.h"
+
+
+outputImage::outputImage(const std::vector<inputImage>& images) :
+	m_width(0),
+	m_height(0),
+	m_strideX(0),
+	m_strideY(0)
+{
+	if (images.size() == 0)
+		return;
+
+	m_width = images[0].width();
+	m_strideX = images[0].strideX();
+	m_strideY = images[0].strideY();
+
+	size_t height = images[0].height();
+	m_height = height * images.size();
+	m_imageData.resize(m_strideY * m_height);
+
+	std::vector<char>::iterator outIterator = m_imageData.begin();
+	for (std::vector<inputImage>::const_iterator it = images.begin(); it != images.end(); ++it)
+		outIterator = std::copy(it->data().begin(), it->data().end(), outIterator);
+}
+
+void outputImage::save(const std::string& fileName)
+{
+	if (m_width == 0 || m_height == 0 || m_strideX == 0 || m_strideY == 0)
+                return;
+
+	struct jpeg_compress_struct cinfo;
+	struct jpeg_error_mgr jerr;
+
+	FILE* outFile = fopen(fileName.c_str(), "wb");
+
+	cinfo.err = jpeg_std_error(&jerr);
+	jpeg_create_compress(&cinfo);
+	jpeg_stdio_dest(&cinfo, outFile);
+
+	cinfo.image_width = m_width;
+	cinfo.image_height = m_height;
+	cinfo.input_components = m_strideX;
+	cinfo.in_color_space = JCS_RGB;
+
+	jpeg_set_defaults( &cinfo );
+	cinfo.num_components = 3;
+	cinfo.dct_method = JDCT_FLOAT;
+	jpeg_set_quality(&cinfo, 80, TRUE);
+
+	jpeg_start_compress( &cinfo, TRUE );
+
+	JSAMPROW scanlines[1];
+	while (cinfo.next_scanline < cinfo.image_height)
+	{
+		scanlines[0] = reinterpret_cast<JSAMPROW>(&m_imageData[cinfo.next_scanline * m_strideY]);
+		jpeg_write_scanlines(&cinfo, scanlines, 1);
+	}
+
+	jpeg_finish_compress(&cinfo);
+	jpeg_destroy_compress(&cinfo);
+	fclose(outFile);
+}
+