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Factorize code for clearing HtreeGroup.

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Change-Id: I29de6dab7383b8cf071eec155e01340d5fdadee5
This commit is contained in:
Vikas Arora 2012-04-23 11:56:23 +00:00 committed by James Zern
parent 6f4a16ea00
commit e38b40a996
1 changed files with 18 additions and 19 deletions
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37
src/dec/vp8l.c
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@ -293,6 +293,19 @@ static int ReadHuffmanCode(int alphabet_size, VP8LDecoder* const dec,
return 1;
}
static void DeleteHtreeGroups(HTreeGroup* htree_groups, int num_htree_groups) {
if (htree_groups != NULL) {
int i, j;
for (i = 0; i < num_htree_groups; ++i) {
HuffmanTree* const htrees = htree_groups[i].htrees_;
for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
HuffmanTreeRelease(&htrees[j]);
}
}
free(htree_groups);
}
}
static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
int* const color_cache_bits_ptr) {
int ok = 0;
@ -341,12 +354,13 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
ok = !br->error_;
for (i = 0; ok && i < num_htree_groups; ++i) {
HuffmanTree* const htrees = htree_groups[i].htrees_;
for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
int alphabet_size = kAlphabetSize[j];
if (j == 0) {
alphabet_size += color_cache_size;
}
ok = ReadHuffmanCode(alphabet_size, dec, &htree_groups[i].htrees_[j]);
ok = ReadHuffmanCode(alphabet_size, dec, &htrees[j]);
ok = ok && !br->error_;
}
}
@ -360,14 +374,7 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
Error:
free(huffman_image);
if (htree_groups != NULL) {
for (i = 0; i < num_htree_groups; ++i) {
for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
HuffmanTreeRelease(&htree_groups[i].htrees_[j]);
}
}
free(htree_groups);
}
DeleteHtreeGroups(htree_groups, num_htree_groups);
return 0;
}
@ -498,6 +505,7 @@ static WEBP_INLINE HTreeGroup* GetHtreeGroupForPos(VP8LMetadata* const hdr,
int x, int y) {
const int meta_index = GetMetaIndex(hdr->huffman_image_, hdr->huffman_xsize_,
hdr->huffman_subsample_bits_, x, y);
assert(meta_index < hdr->num_htree_groups_);
return hdr->htree_groups_ + meta_index;
}
@ -770,16 +778,7 @@ static void ClearMetadata(VP8LMetadata* const hdr) {
assert(hdr);
free(hdr->huffman_image_);
if (hdr->htree_groups_ != NULL) {
int i, j;
for (i = 0; i < hdr->num_htree_groups_; ++i) {
for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
HuffmanTreeRelease(&hdr->htree_groups_[i].htrees_[j]);
}
}
free(hdr->htree_groups_);
}
DeleteHtreeGroups(hdr->htree_groups_, hdr->num_htree_groups_);
VP8LColorCacheDelete(hdr->color_cache_);
InitMetadata(hdr);
}