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jpegdec: add a hint for EOF/READ errors

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`jpegtran -copy all` may be able to process the file into something
libjpeg can read.

Bug: webp:562
Change-Id: I27a8a7a841c1d8d54f47c7c52e289d9d8c549220
This commit is contained in:
James Zern 2024-05-01 12:28:39 -07:00
parent edc289092a
commit 79e7968ad0
1 changed files with 4 additions and 0 deletions
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4
imageio/jpegdec.c
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@ -206,8 +206,12 @@ struct my_error_mgr {
static void my_error_exit(j_common_ptr dinfo) {
struct my_error_mgr* myerr = (struct my_error_mgr*)dinfo->err;
const int msg_code = myerr->pub.msg_code;
fprintf(stderr, "libjpeg error: ");
dinfo->err->output_message(dinfo);
if (msg_code == JERR_INPUT_EOF || msg_code == JERR_FILE_READ) {
fprintf(stderr, "`jpegtran -copy all` MAY be able to process this file.\n");
}
longjmp(myerr->setjmp_buffer, 1);
}