diff options
| author | tabe <none@none> | 2009-03-08 09:16:04 +0000 |
|---|---|---|
| committer | tabe <none@none> | 2009-03-08 09:16:04 +0000 |
| commit | f40454c1b307c92e5c111671c0f12a7ae26eecb8 (patch) | |
| tree | ac64628926500e4d6c67e660db1f9cced4bf67d2 /src/gd_jpeg.c | |
| parent | 02ae7c20079a64e8c809108deb1a0d50d816c9dd (diff) | |
| download | libgd-f40454c1b307c92e5c111671c0f12a7ae26eecb8.tar.gz | |
ref FS#176: added support of variable resolution by Alan Boudreault.
Diffstat (limited to 'src/gd_jpeg.c')
| -rw-r--r-- | src/gd_jpeg.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/gd_jpeg.c b/src/gd_jpeg.c index 1e21ad7..2f48c9a 100644 --- a/src/gd_jpeg.c +++ b/src/gd_jpeg.c @@ -160,6 +160,10 @@ BGD_DECLARE(void) gdImageJpegCtx(gdImagePtr im, gdIOCtx *outfile, int quality) jpeg_set_defaults(&cinfo); + cinfo.density_unit = 1; + cinfo.X_density = im->res_x; + cinfo.Y_density = im->res_y; + if(quality >= 0) { jpeg_set_quality(&cinfo, quality, TRUE); } @@ -358,6 +362,18 @@ BGD_DECLARE(gdImagePtr) gdImageCreateFromJpegCtx(gdIOCtx *infile) goto error; } + /* check if the resolution is specified */ + switch (cinfo.density_unit) { + case 1: + im->res_x = cinfo.X_density; + im->res_y = cinfo.Y_density; + break; + case 2: + im->res_x = DPCM2DPI(cinfo.X_density); + im->res_y = DPCM2DPI(cinfo.Y_density); + break; + } + /* 2.0.22: very basic support for reading CMYK colorspace files. Nice for * thumbnails but there's no support for fussy adjustment of the * assumed properties of inks and paper. |