diff options
Diffstat (limited to 'src/libnsgif.c')
| -rw-r--r-- | src/libnsgif.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/src/libnsgif.c b/src/libnsgif.c index 1540e1d..e0d97c0 100644 --- a/src/libnsgif.c +++ b/src/libnsgif.c @@ -639,8 +639,6 @@ gif__decode(gif_animation *gif, unsigned int *restrict colour_table) { unsigned int transparency_index; - const uint8_t *stack_base; - const uint8_t *stack_pos; uint32_t available = 0; gif_result ret = GIF_OK; lzw_result res; @@ -648,7 +646,7 @@ gif__decode(gif_animation *gif, /* Initialise the LZW decoding */ res = lzw_decode_init(gif->lzw_ctx, gif->gif_data, gif->buffer_size, gif->buffer_position, - minimum_code_size, &stack_base); + minimum_code_size); if (res != LZW_OK) { return gif_error_from_lzw(res); } @@ -657,7 +655,6 @@ gif__decode(gif_animation *gif, gif->frames[frame].transparency_index : GIF_NO_TRANSPARENCY; - stack_pos = stack_base; for (unsigned int y = 0; y < height; y++) { unsigned int x; unsigned int decode_y; @@ -672,9 +669,11 @@ gif__decode(gif_animation *gif, x = width; while (x > 0) { + const uint8_t *uncompressed; unsigned row_available; if (available == 0) { - res = lzw_decode(gif->lzw_ctx, &available); + res = lzw_decode(gif->lzw_ctx, + &uncompressed, &available); if (res != LZW_OK) { /* Unexpected end of frame, try to recover */ if (res == LZW_OK_EOD) { @@ -684,7 +683,6 @@ gif__decode(gif_animation *gif, } break; } - stack_pos = stack_base; } row_available = x < available ? x : available; @@ -692,7 +690,7 @@ gif__decode(gif_animation *gif, available -= row_available; while (row_available-- > 0) { register unsigned int colour; - colour = *stack_pos++; + colour = *uncompressed++; if (colour != transparency_index) { *frame_scanline = colour_table[colour]; } |