From cd27d786ddb1a1491ce28788504f4e99870ef955 Mon Sep 17 00:00:00 2001 From: Michael Drake Date: Mon, 4 Apr 2022 10:09:46 +0100 Subject: GIF: Clarify minimum frame delay handling. --- src/gif.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/src/gif.c b/src/gif.c index 91999d3..181e4e6 100644 --- a/src/gif.c +++ b/src/gif.c @@ -20,6 +20,16 @@ /** Maximum colour table size */ #define NSGIF_MAX_COLOURS 256 +/** Default minimum allowable frame delay in cs. */ +#define NSGIF_FRAME_DELAY_MIN 2 + +/** + * Default frame delay to apply. + * + * Used when a frame delay lower than the minimum is requested. + */ +#define NSGIF_FRAME_DELAY_DEFAULT 10 + /** GIF frame data */ typedef struct nsgif_frame { struct nsgif_frame_info info; @@ -65,7 +75,10 @@ struct nsgif { /** currently decoded image; stored as bitmap from bitmap_create callback */ nsgif_bitmap_t *frame_image; + /** Minimum allowable frame delay. */ uint16_t delay_min; + + /** Frame delay to apply when delay is less than \ref delay_min. */ uint16_t delay_default; /** number of animation loops so far */ @@ -1428,8 +1441,8 @@ nsgif_error nsgif_create( gif->decoded_frame = NSGIF_FRAME_INVALID; gif->prev_index = NSGIF_FRAME_INVALID; - gif->delay_min = 2; - gif->delay_default = 10; + gif->delay_min = NSGIF_FRAME_DELAY_MIN; + gif->delay_default = NSGIF_FRAME_DELAY_DEFAULT; gif->colour_layout = nsgif__bitmap_fmt_to_colour_layout(bitmap_fmt); -- cgit v1.2.1