delta_encoder.c   delta_encoder.c 
skipping to change at line 49 skipping to change at line 49
for (size_t i = 0; i < size; ++i) { for (size_t i = 0; i < size; ++i) {
const uint8_t tmp = coder->history[ const uint8_t tmp = coder->history[
(distance + coder->pos) & 0xFF]; (distance + coder->pos) & 0xFF];
coder->history[coder->pos-- & 0xFF] = buffer[i]; coder->history[coder->pos-- & 0xFF] = buffer[i];
buffer[i] -= tmp; buffer[i] -= tmp;
} }
} }
static lzma_ret static lzma_ret
delta_encode(lzma_coder *coder, lzma_allocator *allocator, delta_encode(lzma_coder *coder, const lzma_allocator *allocator,
const uint8_t *restrict in, size_t *restrict in_pos, const uint8_t *restrict in, size_t *restrict in_pos,
size_t in_size, uint8_t *restrict out, size_t in_size, uint8_t *restrict out,
size_t *restrict out_pos, size_t out_size, lzma_action actio n) size_t *restrict out_pos, size_t out_size, lzma_action actio n)
{ {
lzma_ret ret; lzma_ret ret;
if (coder->next.code == NULL) { if (coder->next.code == NULL) {
const size_t in_avail = in_size - *in_pos; const size_t in_avail = in_size - *in_pos;
const size_t out_avail = out_size - *out_pos; const size_t out_avail = out_size - *out_pos;
const size_t size = my_min(in_avail, out_avail); const size_t size = my_min(in_avail, out_avail);
skipping to change at line 83 skipping to change at line 83
in, in_pos, in_size, out, out_pos, out_size, in, in_pos, in_size, out, out_pos, out_size,
action); action);
encode_in_place(coder, out + out_start, *out_pos - out_start ); encode_in_place(coder, out + out_start, *out_pos - out_start );
} }
return ret; return ret;
} }
static lzma_ret static lzma_ret
delta_encoder_update(lzma_coder *coder, lzma_allocator *allocator, delta_encoder_update(lzma_coder *coder, const lzma_allocator *allocator,
const lzma_filter *filters_null lzma_attribute((__unused__)) , const lzma_filter *filters_null lzma_attribute((__unused__)) ,
const lzma_filter *reversed_filters) const lzma_filter *reversed_filters)
{ {
// Delta doesn't and will never support changing the options in // Delta doesn't and will never support changing the options in
// the middle of encoding. If the app tries to change them, we // the middle of encoding. If the app tries to change them, we
// simply ignore them. // simply ignore them.
return lzma_next_filter_update( return lzma_next_filter_update(
&coder->next, allocator, reversed_filters + 1); &coder->next, allocator, reversed_filters + 1);
} }
extern lzma_ret extern lzma_ret
lzma_delta_encoder_init(lzma_next_coder *next, lzma_allocator *allocator, lzma_delta_encoder_init(lzma_next_coder *next, const lzma_allocator *alloca tor,
const lzma_filter_info *filters) const lzma_filter_info *filters)
{ {
next->code = &delta_encode; next->code = &delta_encode;
next->update = &delta_encoder_update; next->update = &delta_encoder_update;
return lzma_delta_coder_init(next, allocator, filters); return lzma_delta_coder_init(next, allocator, filters);
} }
extern lzma_ret extern lzma_ret
lzma_delta_props_encode(const void *options, uint8_t *out) lzma_delta_props_encode(const void *options, uint8_t *out)
{ {
 End of changes. 3 change blocks. 
3 lines changed or deleted 3 lines changed or added

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