Add comment to reference GIF LZW specification.

This commit is contained in:
Ray Gardner 2021-03-30 17:35:21 -06:00
parent 5390786c65
commit 306d030fce

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@ -27,6 +27,12 @@ enum { INIT, ENCODE, FINISH };
/* GIF LZW encoder by Raymond Gardner. */
/* Released here under PIL license. */
/* This LZW encoder conforms to the GIF LZW format specified in the original
* Compuserve GIF 87a and GIF 89a specifications (see e.g.
* https://www.w3.org/Graphics/GIF/spec-gif87.txt Appendix C and
* https://www.w3.org/Graphics/GIF/spec-gif89a.txt Appendix F).
*/
/* Return values */
#define GLZW_OK 0
#define GLZW_NO_INPUT_AVAIL 1