MAX_TILE: Allow list of tile widths/heights
The aomenc API is modified to allow --tile_width and --tile_height to take a list of sizes.
For example, --tile_width=2,3 will give tiles of widths 2,3,2,3,... until the image width
is exhausted. --tile_width=2 will still work to gives tiles of width 2.
Change-Id: I2afa14d404557aa8b7341b20f7477590e03e0bdb
diff --git a/args.c b/args.c
index 5711035..b9384de 100644
--- a/args.c
+++ b/args.c
@@ -210,3 +210,28 @@
if (arg->def->enums) return arg_parse_enum(arg);
return arg_parse_int(arg);
}
+
+// parse a comma separated list of at most n integers
+// return the number of elements in the list
+int arg_parse_list(const struct arg *arg, int *list, int n) {
+ const char *ptr = arg->val;
+ char *endptr;
+ int i = 0;
+
+ while (ptr[0] != '\0') {
+ int32_t rawval = (int32_t)strtol(ptr, &endptr, 10);
+ if (rawval < INT_MIN || rawval > INT_MAX) {
+ die("Option %s: Value %ld out of range for signed int\n", arg->name,
+ rawval);
+ } else if (i >= n) {
+ die("Option %s: List has more than %d entries\n", arg->name, n);
+ } else if (*endptr == ',') {
+ endptr++;
+ } else if (*endptr != '\0') {
+ die("Option %s: Bad list separator '%c'\n", arg->name, *endptr);
+ }
+ list[i++] = (int)rawval;
+ ptr = endptr;
+ }
+ return i;
+}
