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webpmux: add "-set bgcolor A,R,G,B"

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Similarly to "-set loop <>", this is useful to set
the parameter at global level and not just while assembling
the frames separately.

Change-Id: I79bcbe37f8ff50b9904e78d14011ccbac72f17a1
This commit is contained in:
Pascal Massimino 2021-11-03 11:41:50 +01:00
parent 2c206aaf96
commit 50c97c301d
3 changed files with 50 additions and 11 deletions
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11
README.mux
View File

@ -43,11 +43,12 @@ GET_OPTIONS:
frame n get nth frame
SET_OPTIONS:
Set color profile/metadata:
loop LOOP_COUNT set the loop count
icc file.icc set ICC profile
exif file.exif set EXIF metadata
xmp file.xmp set XMP metadata
Set color profile/metadata/parameters:
loop LOOP_COUNT set the loop count
bgcolor BACKGROUND_COLOR set the animation background color
icc file.icc set ICC profile
exif file.exif set EXIF metadata
xmp file.xmp set XMP metadata
where: 'file.icc' contains the ICC profile to be set,
'file.exif' contains the EXIF metadata to be set
'file.xmp' contains the XMP metadata to be set

43
examples/webpmux.c
View File

@ -99,6 +99,7 @@ typedef enum {
FEATURE_ANMF,
FEATURE_DURATION,
FEATURE_LOOP,
FEATURE_BGCOLOR,
LAST_FEATURE
} FeatureType;
@ -315,11 +316,12 @@ static void PrintHelp(void) {
printf("\n");
printf("SET_OPTIONS:\n");
printf(" Set color profile/metadata:\n");
printf(" loop LOOP_COUNT set the loop count\n");
printf(" icc file.icc set ICC profile\n");
printf(" exif file.exif set EXIF metadata\n");
printf(" xmp file.xmp set XMP metadata\n");
printf(" Set color profile/metadata/parameters:\n");
printf(" loop LOOP_COUNT set the loop count\n");
printf(" bgcolor BACKGROUND_COLOR set the animation background color\n");
printf(" icc file.icc set ICC profile\n");
printf(" exif file.exif set EXIF metadata\n");
printf(" xmp file.xmp set XMP metadata\n");
printf(" where: 'file.icc' contains the ICC profile to be set,\n");
printf(" 'file.exif' contains the EXIF metadata to be set\n");
printf(" 'file.xmp' contains the XMP metadata to be set\n");
@ -778,6 +780,13 @@ static int ParseCommandLine(Config* config, const W_CHAR** const unicode_argv) {
arg->params_ = argv[i + 1];
++feature_arg_index;
i += 2;
} else if (!strcmp(argv[i], "bgcolor") &&
(config->action_type_ == ACTION_SET)) {
CHECK_NUM_ARGS_AT_LEAST(2, ErrParse);
config->type_ = FEATURE_BGCOLOR;
arg->params_ = argv[i + 1];
++feature_arg_index;
i += 2;
} else { // Assume input file.
if (config->input_ == NULL) {
config->input_ = wargv[i];
@ -1053,6 +1062,30 @@ static int Process(const Config* config) {
}
break;
}
case FEATURE_BGCOLOR: {
WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
uint32_t bgcolor;
ok = ParseBgcolorArgs(config->args_[0].params_, &bgcolor);
if (!ok) {
ERROR_GOTO1("ERROR: Could not parse the background color.\n",
Err2);
}
ok = CreateMux(config->input_, &mux);
if (!ok) goto Err2;
ok = (WebPMuxGetAnimationParams(mux, &params) == WEBP_MUX_OK);
if (!ok) {
ERROR_GOTO1("ERROR: input file does not seem to be an animation.\n",
Err2);
}
params.bgcolor = bgcolor;
err = WebPMuxSetAnimationParams(mux, &params);
ok = (err == WEBP_MUX_OK);
if (!ok) {
ERROR_GOTO2("ERROR (%s): Could not set animation parameters.\n",
ErrorString(err), Err2);
}
break;
}
default: {
ERROR_GOTO1("ERROR: Invalid feature for action 'set'.\n", Err2);
break;

7
man/webpmux.1
View File

@ -1,5 +1,5 @@
.\" Hey, EMACS: -*- nroff -*-
.TH WEBPMUX 1 "December 12, 2020"
.TH WEBPMUX 1 "November 3, 2021"
.SH NAME
webpmux \- create animated WebP files from non\-animated WebP images, extract
frames from animated WebP images, and manage XMP/EXIF metadata and ICC profile.
@ -82,6 +82,11 @@ Set loop count on an animated file.
.P
Where: 'loop_count' must be in range [0, 65535].
.TP
.BI bgcolor " A,R,G,B
Set the background color of the canvas on an animated file.
.P
Where: 'loop_count' must be in range [0, 65535].
.TP
.BI icc " file.icc
Set ICC profile.
.P