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img2webp: add -exact/-noexact per-frame options

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Bug: b:363409354
Change-Id: I4e7282ed2df091dbef6d79743be1c8c868c0d44a
This commit is contained in:
James Zern
2024-09-03 18:58:13 -07:00
parent 1c8eba978b
commit 57883c78ed
3 changed files with 17 additions and 1 deletions
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8
examples/img2webp.c
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@ -63,6 +63,10 @@ static void Help(void) {
printf(" -lossy ............... use lossy mode\n");
printf(" -q <float> ........... quality\n");
printf(" -m <int> ............. method to use\n");
printf(" -exact, -noexact ..... preserve or alter RGB values in transparent "
"area\n"
" (default: -noexact, may cause artifacts\n"
" with lossy animations)\n");
printf("\n");
printf("example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
@ -248,6 +252,10 @@ int main(int argc, const char* argv[]) {
fprintf(stderr, "Invalid negative duration (%d)\n", duration);
parse_error = 1;
}
} else if (!strcmp(argv[c], "-exact")) {
config.exact = 1;
} else if (!strcmp(argv[c], "-noexact")) {
config.exact = 0;
} else {
parse_error = 1; // shouldn't be here.
fprintf(stderr, "Unknown option [%s]\n", argv[c]);