Commit 837e471a90e79b37cb4f7ef9950321f48c7c5f41
2023-11-14T11:17:25
tjexample.c: Fix error when decompressing (regression introduced by 300a344d653d4a8779706e42828d945c6a53ff9d) 300a344d653d4a8779706e42828d945c6a53ff9d fixed the recompression code path but also broke the pure decompression code path, because the fix caused the TurboJPEG decompression instance to be destroyed before tj3SaveImage() could use it. Furthermore, the fix in 300a344d653d4a8779706e42828d945c6a53ff9d prevented pixel density information from being transferred from the input image to the output image when recompressing. This commit does the following: - Modify tjexample.c so that a single TurboJPEG instance is initialized for lossless transformation and shared by all code paths. In addition to fixing both of the aforementioned issues, this makes the code more readable. - Extend tjexampletest to test the recompression code path, thus ensuring that the issues fixed by this commit and 300a344d653d4a8779706e42828d945c6a53ff9d are not reintroduced. - Modify tjexample.c to remove redundant fclose(), tj3Destroy(), and tj3Free() calls.