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-rw-r--r--lib/imgtools.c380
1 files changed, 190 insertions, 190 deletions
diff --git a/lib/imgtools.c b/lib/imgtools.c
index 168bac9..d8d5d53 100644
--- a/lib/imgtools.c
+++ b/lib/imgtools.c
@@ -1,190 +1,190 @@
-/*
- * imgtools.c
- *
- * See the README file for copyright information and how to reach the author.
- *
- */
-
-#include "imgtools.h"
-
-//***************************************************************************
-// Image converting stuff
-//***************************************************************************
-
-int fromJpeg(Imlib_Image& image, unsigned char* buffer, int size)
-{
- struct jpeg_decompress_struct cinfo;
- struct jpeg_error_mgr jerr;
- int w, h;
- DATA8 *ptr, *line[16], *data;
- DATA32 *ptr2, *dest;
- int x, y;
-
- cinfo.err = jpeg_std_error(&jerr);
-
- jpeg_create_decompress(&cinfo);
- jpeg_mem_src(&cinfo, buffer, size);
- jpeg_read_header(&cinfo, TRUE);
- cinfo.do_fancy_upsampling = FALSE;
- cinfo.do_block_smoothing = FALSE;
-
- jpeg_start_decompress(&cinfo);
-
- w = cinfo.output_width;
- h = cinfo.output_height;
-
- image = imlib_create_image(w, h);
- imlib_context_set_image(image);
-
- dest = ptr2 = imlib_image_get_data();
- data = (DATA8*)malloc(w * 16 * cinfo.output_components);
-
- for (int i = 0; i < cinfo.rec_outbuf_height; i++)
- line[i] = data + (i * w * cinfo.output_components);
-
- for (int l = 0; l < h; l += cinfo.rec_outbuf_height)
- {
- jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
- int scans = cinfo.rec_outbuf_height;
-
- if (h - l < scans)
- scans = h - l;
-
- ptr = data;
-
- for (y = 0; y < scans; y++)
- {
- for (x = 0; x < w; x++)
- {
- *ptr2 = (0xff000000) | ((ptr[0]) << 16) | ((ptr[1]) << 8) | (ptr[2]);
- ptr += cinfo.output_components;
- ptr2++;
- }
- }
- }
-
- free(data);
-
- imlib_image_put_back_data(dest);
-
- jpeg_finish_decompress(&cinfo);
- jpeg_destroy_decompress(&cinfo);
-
- return success;
-}
-
-long toJpeg(Imlib_Image image, MemoryStruct* data, int quality)
-{
- struct jpeg_compress_struct cinfo = { 0 };
- struct jpeg_error_mgr jerr;
- DATA32* ptr;
- DATA8* buf;
- long unsigned int size = data->size;
-
- imlib_context_set_image(image);
-
- data->clear();
-
- cinfo.err = jpeg_std_error(&jerr);
-
- jpeg_create_compress(&cinfo);
- jpeg_mem_dest(&cinfo, (unsigned char**)(&data->memory), &size);
-
- cinfo.image_width = imlib_image_get_width();
- cinfo.image_height = imlib_image_get_height();
- cinfo.input_components = 3;
- cinfo.in_color_space = JCS_RGB;
-
- jpeg_set_defaults(&cinfo);
- jpeg_set_quality(&cinfo, quality, TRUE);
- jpeg_start_compress(&cinfo, TRUE);
-
- // get data pointer
-
- if (!(ptr = imlib_image_get_data_for_reading_only()))
- return 0;
-
- // allocate a small buffer to convert image data */
-
- buf = (DATA8*)malloc(imlib_image_get_width() * 3 * sizeof(DATA8));
-
- while (cinfo.next_scanline < cinfo.image_height)
- {
- // convert scanline from ARGB to RGB packed
-
- for (int j = 0, i = 0; i < imlib_image_get_width(); i++)
- {
- buf[j++] = ((*ptr) >> 16) & 0xff;
- buf[j++] = ((*ptr) >> 8) & 0xff;
- buf[j++] = ((*ptr)) & 0xff;
-
- ptr++;
- }
-
- // write scanline
-
- jpeg_write_scanlines(&cinfo, (JSAMPROW*)(&buf), 1);
- }
-
- free(buf);
- jpeg_finish_compress(&cinfo);
- jpeg_destroy_compress(&cinfo);
-
- return data->size;
-}
-
-int scaleImageToJpegBuffer(Imlib_Image image, MemoryStruct* data, int width, int height)
-{
- if (width && height)
- {
- Imlib_Image scaledImage;
-
- imlib_context_set_image(image);
-
- int imgWidth = imlib_image_get_width();
- int imgHeight = imlib_image_get_height();
- double ratio = (double)imgWidth / (double)imgHeight;
-
- if ((double)width/(double)imgWidth < (double)height/(double)imgHeight)
- height = (int)((double)width / ratio);
- else
- width = (int)((double)height * ratio);
-
- scaledImage = imlib_create_image(width, height);
- imlib_context_set_image(scaledImage);
-
- imlib_context_set_color(240, 240, 240, 255);
- imlib_image_fill_rectangle(0, 0, width, height);
-
- imlib_blend_image_onto_image(image, 0, 0, 0,
- imgWidth, imgHeight, 0, 0,
- width, height);
-
- toJpeg(scaledImage, data, 70);
-
- imlib_context_set_image(scaledImage);
- imlib_free_image();
-
- tell(1, "Scaled image to %d/%d, now %d bytes", width, height, (int)data->size);
- }
- else
- {
- toJpeg(image, data, 70);
- }
-
- return success;
-}
-
-int scaleJpegBuffer(MemoryStruct* data, int width, int height)
-{
- Imlib_Image image;
-
- fromJpeg(image, (unsigned char*)data->memory, data->size);
-
- scaleImageToJpegBuffer(image, data, width, height);
-
- imlib_context_set_image(image);
- imlib_free_image();
-
- return success;
-}
+/*
+ * imgtools.c
+ *
+ * See the README file for copyright information and how to reach the author.
+ *
+ */
+
+#include "imgtools.h"
+
+//***************************************************************************
+// Image converting stuff
+//***************************************************************************
+
+int fromJpeg(Imlib_Image& image, unsigned char* buffer, int size)
+{
+ struct jpeg_decompress_struct cinfo;
+ struct jpeg_error_mgr jerr;
+ int w, h;
+ DATA8 *ptr, *line[16], *data;
+ DATA32 *ptr2, *dest;
+ int x, y;
+
+ cinfo.err = jpeg_std_error(&jerr);
+
+ jpeg_create_decompress(&cinfo);
+ jpeg_mem_src(&cinfo, buffer, size);
+ jpeg_read_header(&cinfo, TRUE);
+ cinfo.do_fancy_upsampling = FALSE;
+ cinfo.do_block_smoothing = FALSE;
+
+ jpeg_start_decompress(&cinfo);
+
+ w = cinfo.output_width;
+ h = cinfo.output_height;
+
+ image = imlib_create_image(w, h);
+ imlib_context_set_image(image);
+
+ dest = ptr2 = imlib_image_get_data();
+ data = (DATA8*)malloc(w * 16 * cinfo.output_components);
+
+ for (int i = 0; i < cinfo.rec_outbuf_height; i++)
+ line[i] = data + (i * w * cinfo.output_components);
+
+ for (int l = 0; l < h; l += cinfo.rec_outbuf_height)
+ {
+ jpeg_read_scanlines(&cinfo, line, cinfo.rec_outbuf_height);
+ int scans = cinfo.rec_outbuf_height;
+
+ if (h - l < scans)
+ scans = h - l;
+
+ ptr = data;
+
+ for (y = 0; y < scans; y++)
+ {
+ for (x = 0; x < w; x++)
+ {
+ *ptr2 = (0xff000000) | ((ptr[0]) << 16) | ((ptr[1]) << 8) | (ptr[2]);
+ ptr += cinfo.output_components;
+ ptr2++;
+ }
+ }
+ }
+
+ free(data);
+
+ imlib_image_put_back_data(dest);
+
+ jpeg_finish_decompress(&cinfo);
+ jpeg_destroy_decompress(&cinfo);
+
+ return success;
+}
+
+long toJpeg(Imlib_Image image, MemoryStruct* data, int quality)
+{
+ struct jpeg_compress_struct cinfo = { 0 };
+ struct jpeg_error_mgr jerr;
+ DATA32* ptr;
+ DATA8* buf;
+ long unsigned int size = data->size;
+
+ imlib_context_set_image(image);
+
+ data->clear();
+
+ cinfo.err = jpeg_std_error(&jerr);
+
+ jpeg_create_compress(&cinfo);
+ jpeg_mem_dest(&cinfo, (unsigned char**)(&data->memory), &size);
+
+ cinfo.image_width = imlib_image_get_width();
+ cinfo.image_height = imlib_image_get_height();
+ cinfo.input_components = 3;
+ cinfo.in_color_space = JCS_RGB;
+
+ jpeg_set_defaults(&cinfo);
+ jpeg_set_quality(&cinfo, quality, TRUE);
+ jpeg_start_compress(&cinfo, TRUE);
+
+ // get data pointer
+
+ if (!(ptr = imlib_image_get_data_for_reading_only()))
+ return 0;
+
+ // allocate a small buffer to convert image data */
+
+ buf = (DATA8*)malloc(imlib_image_get_width() * 3 * sizeof(DATA8));
+
+ while (cinfo.next_scanline < cinfo.image_height)
+ {
+ // convert scanline from ARGB to RGB packed
+
+ for (int j = 0, i = 0; i < imlib_image_get_width(); i++)
+ {
+ buf[j++] = ((*ptr) >> 16) & 0xff;
+ buf[j++] = ((*ptr) >> 8) & 0xff;
+ buf[j++] = ((*ptr)) & 0xff;
+
+ ptr++;
+ }
+
+ // write scanline
+
+ jpeg_write_scanlines(&cinfo, (JSAMPROW*)(&buf), 1);
+ }
+
+ free(buf);
+ jpeg_finish_compress(&cinfo);
+ jpeg_destroy_compress(&cinfo);
+
+ return data->size;
+}
+
+int scaleImageToJpegBuffer(Imlib_Image image, MemoryStruct* data, int width, int height)
+{
+ if (width && height)
+ {
+ Imlib_Image scaledImage;
+
+ imlib_context_set_image(image);
+
+ int imgWidth = imlib_image_get_width();
+ int imgHeight = imlib_image_get_height();
+ double ratio = (double)imgWidth / (double)imgHeight;
+
+ if ((double)width/(double)imgWidth < (double)height/(double)imgHeight)
+ height = (int)((double)width / ratio);
+ else
+ width = (int)((double)height * ratio);
+
+ scaledImage = imlib_create_image(width, height);
+ imlib_context_set_image(scaledImage);
+
+ imlib_context_set_color(240, 240, 240, 255);
+ imlib_image_fill_rectangle(0, 0, width, height);
+
+ imlib_blend_image_onto_image(image, 0, 0, 0,
+ imgWidth, imgHeight, 0, 0,
+ width, height);
+
+ toJpeg(scaledImage, data, 70);
+
+ imlib_context_set_image(scaledImage);
+ imlib_free_image();
+
+ tell(1, "Scaled image to %d/%d, now %d bytes", width, height, (int)data->size);
+ }
+ else
+ {
+ toJpeg(image, data, 70);
+ }
+
+ return success;
+}
+
+int scaleJpegBuffer(MemoryStruct* data, int width, int height)
+{
+ Imlib_Image image;
+
+ fromJpeg(image, (unsigned char*)data->memory, data->size);
+
+ scaleImageToJpegBuffer(image, data, width, height);
+
+ imlib_context_set_image(image);
+ imlib_free_image();
+
+ return success;
+}
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