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Added image characteristic hint for the codec.

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This image type hint is used by codec to apply appropriate set of
transform filters to the image.

Change-Id: Ibb24e47ba14c40fa7f9f2c50ae86e03f2b29e9a6
This commit is contained in:
Vikas Arora
2012-06-22 12:14:48 +05:30
parent e8a0a821d2
commit d373076a53
5 changed files with 44 additions and 8 deletions
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13
examples/cwebp.c
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@ -744,6 +744,9 @@ static void HelpLong(void) {
printf(" One of: none, fast (default) or best.\n");
printf(" -alpha_cleanup ......... Clean RGB values in transparent area.\n");
printf(" -noalpha ............... discard any transparency information.\n");
printf(" -lossless .............. Encode image losslessly.\n");
printf(" -hint <string> ......... Specify image characteristics hint.\n");
printf(" One of: photo or picture\n");
printf("\n");
printf(" -short ................. condense printed message\n");
@ -866,6 +869,16 @@ int main(int argc, const char *argv[]) {
} else if (!strcmp(argv[c], "-lossless")) {
config.lossless = 1;
picture.use_argb_input = 1;
} else if (!strcmp(argv[c], "-hint") && c < argc - 1) {
++c;
if (!strcmp(argv[c], "photo")) {
config.image_hint = WEBP_HINT_PHOTO;
} else if (!strcmp(argv[c], "picture")) {
config.image_hint = WEBP_HINT_PICTURE;
} else {
fprintf(stderr, "Error! Unrecognized image hint: %s\n", argv[c]);
goto Error;
}
} else if (!strcmp(argv[c], "-size") && c < argc - 1) {
config.target_size = strtol(argv[++c], NULL, 0);
} else if (!strcmp(argv[c], "-psnr") && c < argc - 1) {