Virtualization
/
brotli
mirror of https://github.com/google/brotli
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Update the previous two bytes when decoding an 

uncompressed metablock.
This commit is contained in:
Zoltan Szabadka 2015-04-01 16:23:18 +02:00
parent 28dea6a64d
commit 2a7bbfc553
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
dec/decode.c
View File

@ -853,6 +853,7 @@ BrotliResult BrotliDecompressStreaming(BrotliInput input, BrotliOutput output,
BrotliResult result = BROTLI_RESULT_SUCCESS;
BrotliBitReader* br = &s->br;
int initial_remaining_len;
int bytes_copied;
/* We need the slack region for the following reasons:
- always doing two 8-byte copies for fast backward copying
@ -989,7 +990,13 @@ BrotliResult BrotliDecompressStreaming(BrotliInput input, BrotliOutput output,
initial_remaining_len = s->meta_block_remaining_len;
/* pos is given as argument since s->pos is only updated at the end. */
result = CopyUncompressedBlockToOutput(output, pos, s);
pos += (initial_remaining_len - s->meta_block_remaining_len);
bytes_copied = initial_remaining_len - s->meta_block_remaining_len;
pos += bytes_copied;
if (bytes_copied > 0) {
s->prev_byte2 = bytes_copied == 1 ? s->prev_byte1 :
s->ringbuffer[(pos - 2) & s->ringbuffer_mask];
s->prev_byte1 = s->ringbuffer[(pos - 1) & s->ringbuffer_mask];
}
if (result != BROTLI_RESULT_SUCCESS) break;
s->state = BROTLI_STATE_METABLOCK_DONE;
break;