diff options
Diffstat (limited to 'src/lzw.c')
| -rw-r--r-- | src/lzw.c | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -316,6 +316,7 @@ lzw_result lzw_decode(struct lzw_ctx *ctx, return res; } + /* Handle the new code */ if (code_new == clear_code) { /* Got Clear code */ return lzw__clear_codes(ctx, stack_pos_out); @@ -323,11 +324,11 @@ lzw_result lzw_decode(struct lzw_ctx *ctx, } else if (code_new == ctx->eoi_code) { /* Got End of Information code */ return LZW_EOI_CODE; - } - if (code_new > current_entry) { + } else if (code_new > current_entry) { /* Code is invalid */ return LZW_BAD_CODE; + } else if (code_new < current_entry) { /* Code is in table */ code_out = code_new; @@ -357,6 +358,7 @@ lzw_result lzw_decode(struct lzw_ctx *ctx, } } + /* Store details of this code as "previous code" to the context. */ ctx->previous_code_first = table[code_new].first_value; ctx->previous_code = code_new; |