mirror of
https://github.com/google/brotli.git
synced 2024-11-08 13:20:05 +00:00
Fix name collisions with libwebp.
Prefix all externally visible function names with Brotli and make all other functions static.
This commit is contained in:
parent
8f30907d0f
commit
e0346c8262
43
dec/decode.c
43
dec/decode.c
@ -141,8 +141,8 @@ static int ReadHuffmanCodeLengths(
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int prev_code_len = kDefaultCodeLength;
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HuffmanTree tree;
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if (!HuffmanTreeBuildImplicit(&tree, code_length_code_lengths,
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CODE_LENGTH_CODES)) {
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if (!BrotliHuffmanTreeBuildImplicit(&tree, code_length_code_lengths,
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CODE_LENGTH_CODES)) {
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printf("[ReadHuffmanCodeLengths] Building code length tree failed: ");
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PrintIntVector(code_length_code_lengths, CODE_LENGTH_CODES);
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return 0;
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@ -199,7 +199,7 @@ static int ReadHuffmanCodeLengths(
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ok = 1;
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End:
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HuffmanTreeRelease(&tree);
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BrotliHuffmanTreeRelease(&tree);
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return ok;
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}
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@ -281,8 +281,8 @@ static int ReadHuffmanCode(int alphabet_size,
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BROTLI_LOG_UINT(first_symbol_len_code);
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BROTLI_LOG_UINT(symbols[0]);
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BROTLI_LOG_UINT(symbols[1]);
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ok = HuffmanTreeBuildExplicit(tree, code_lengths, codes, symbols,
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alphabet_size, num_symbols);
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ok = BrotliHuffmanTreeBuildExplicit(tree, code_lengths, codes, symbols,
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alphabet_size, num_symbols);
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if (!ok) {
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printf("[ReadHuffmanCode] HuffmanTreeBuildExplicit failed: ");
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PrintIntVector(code_lengths, num_symbols);
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@ -312,7 +312,7 @@ static int ReadHuffmanCode(int alphabet_size,
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code_lengths, br) &&
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RepairHuffmanCodeLengths(alphabet_size, code_lengths);
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if (ok) {
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ok = HuffmanTreeBuildImplicit(tree, code_lengths, alphabet_size);
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ok = BrotliHuffmanTreeBuildImplicit(tree, code_lengths, alphabet_size);
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if (!ok) {
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printf("[ReadHuffmanCode] HuffmanTreeBuildImplicit failed: ");
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PrintIntVector(code_lengths, alphabet_size);
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@ -422,22 +422,23 @@ typedef struct {
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HuffmanTree* htrees;
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} HuffmanTreeGroup;
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void HuffmanTreeGroupInit(HuffmanTreeGroup* group, int alphabet_size,
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int ntrees) {
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static void HuffmanTreeGroupInit(HuffmanTreeGroup* group, int alphabet_size,
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int ntrees) {
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group->alphabet_size = alphabet_size;
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group->num_htrees = ntrees;
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group->htrees = (HuffmanTree*)malloc(sizeof(HuffmanTree) * ntrees);
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}
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void HuffmanTreeGroupRelease(HuffmanTreeGroup* group) {
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static void HuffmanTreeGroupRelease(HuffmanTreeGroup* group) {
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int i;
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for (i = 0; i < group->num_htrees; ++i) {
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HuffmanTreeRelease(&group->htrees[i]);
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BrotliHuffmanTreeRelease(&group->htrees[i]);
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}
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free(group->htrees);
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}
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int HuffmanTreeGroupDecode(HuffmanTreeGroup* group, BrotliBitReader* br) {
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static int HuffmanTreeGroupDecode(HuffmanTreeGroup* group,
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BrotliBitReader* br) {
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int i;
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for (i = 0; i < group->num_htrees; ++i) {
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ReadHuffmanCode(group->alphabet_size, &group->htrees[i], br);
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@ -445,13 +446,13 @@ int HuffmanTreeGroupDecode(HuffmanTreeGroup* group, BrotliBitReader* br) {
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return 1;
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}
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int DecodeContextMap(int num_block_types,
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int stream_type,
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int* context_mode,
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int* contexts_per_block,
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int* num_htrees,
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uint8_t** context_map,
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BrotliBitReader* br) {
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static int DecodeContextMap(int num_block_types,
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int stream_type,
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int* context_mode,
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int* contexts_per_block,
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int* num_htrees,
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uint8_t** context_map,
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BrotliBitReader* br) {
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int use_context = BrotliReadBits(br, 1);
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if (!use_context) {
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*context_mode = 0;
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@ -522,7 +523,7 @@ int DecodeContextMap(int num_block_types,
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(*context_map)[i] = ReadSymbol(&tree_index_htree, br);
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}
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}
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HuffmanTreeRelease(&tree_index_htree);
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BrotliHuffmanTreeRelease(&tree_index_htree);
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if (BrotliReadBits(br, 1)) {
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InverseMoveToFrontTransform(*context_map, context_map_size);
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}
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@ -775,8 +776,8 @@ int BrotliDecompressBuffer(size_t encoded_size,
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free(dist_context_map);
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for (i = 0; i < 3; ++i) {
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HuffmanTreeGroupRelease(&hgroup[i]);
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HuffmanTreeRelease(&block_type_trees[i]);
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HuffmanTreeRelease(&block_len_trees[i]);
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BrotliHuffmanTreeRelease(&block_type_trees[i]);
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BrotliHuffmanTreeRelease(&block_len_trees[i]);
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}
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}
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@ -72,7 +72,7 @@ static int TreeInit(HuffmanTree* const tree, int num_leaves) {
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return 1;
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}
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void HuffmanTreeRelease(HuffmanTree* const tree) {
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void BrotliHuffmanTreeRelease(HuffmanTree* const tree) {
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if (tree != NULL) {
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free(tree->root_);
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tree->root_ = NULL;
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@ -81,8 +81,12 @@ void HuffmanTreeRelease(HuffmanTree* const tree) {
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}
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}
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int HuffmanCodeLengthsToCodes(const int* const code_lengths,
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int code_lengths_size, int* const huff_codes) {
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// Utility: converts Huffman code lengths to corresponding Huffman codes.
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// 'huff_codes' should be pre-allocated.
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// Returns false in case of error (memory allocation, invalid codes).
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static int HuffmanCodeLengthsToCodes(const int* const code_lengths,
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int code_lengths_size,
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int* const huff_codes) {
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int symbol;
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int code_len;
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int code_length_hist[MAX_ALLOWED_CODE_LENGTH + 1] = { 0 };
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@ -201,9 +205,9 @@ static int TreeAddSymbol(HuffmanTree* const tree,
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return 1;
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}
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int HuffmanTreeBuildImplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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int code_lengths_size) {
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int BrotliHuffmanTreeBuildImplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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int code_lengths_size) {
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int symbol;
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int num_symbols = 0;
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int root_symbol = 0;
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@ -227,7 +231,7 @@ int HuffmanTreeBuildImplicit(HuffmanTree* const tree,
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if (num_symbols == 1) { // Trivial case.
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const int max_symbol = code_lengths_size;
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if (root_symbol < 0 || root_symbol >= max_symbol) {
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HuffmanTreeRelease(tree);
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BrotliHuffmanTreeRelease(tree);
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return 0;
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}
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return TreeAddSymbol(tree, root_symbol, 0, 0);
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@ -255,16 +259,17 @@ int HuffmanTreeBuildImplicit(HuffmanTree* const tree,
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End:
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free(codes);
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ok = ok && IsFull(tree);
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if (!ok) HuffmanTreeRelease(tree);
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if (!ok) BrotliHuffmanTreeRelease(tree);
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return ok;
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}
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}
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int HuffmanTreeBuildExplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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const int* const codes,
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const int* const symbols, int max_symbol,
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int num_symbols) {
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int BrotliHuffmanTreeBuildExplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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const int* const codes,
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const int* const symbols,
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int max_symbol,
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int num_symbols) {
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int ok = 0;
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int i;
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@ -290,7 +295,7 @@ int HuffmanTreeBuildExplicit(HuffmanTree* const tree,
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ok = 1;
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End:
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ok = ok && IsFull(tree);
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if (!ok) HuffmanTreeRelease(tree);
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if (!ok) BrotliHuffmanTreeRelease(tree);
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return ok;
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}
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@ -60,29 +60,23 @@ static BROTLI_INLINE const HuffmanTreeNode* HuffmanTreeNextNode(
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// Releases the nodes of the Huffman tree.
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// Note: It does NOT free 'tree' itself.
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void HuffmanTreeRelease(HuffmanTree* const tree);
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void BrotliHuffmanTreeRelease(HuffmanTree* const tree);
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// Builds Huffman tree assuming code lengths are implicitly in symbol order.
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// Returns false in case of error (invalid tree or memory error).
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int HuffmanTreeBuildImplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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int code_lengths_size);
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int BrotliHuffmanTreeBuildImplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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int code_lengths_size);
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// Build a Huffman tree with explicitly given lists of code lengths, codes
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// and symbols. Verifies that all symbols added are smaller than max_symbol.
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// Returns false in case of an invalid symbol, invalid tree or memory error.
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int HuffmanTreeBuildExplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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const int* const codes,
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const int* const symbols, int max_symbol,
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int num_symbols);
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// Utility: converts Huffman code lengths to corresponding Huffman codes.
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// 'huff_codes' should be pre-allocated.
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// Returns false in case of error (memory allocation, invalid codes).
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int HuffmanCodeLengthsToCodes(const int* const code_lengths,
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int code_lengths_size, int* const huff_codes);
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int BrotliHuffmanTreeBuildExplicit(HuffmanTree* const tree,
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const int* const code_lengths,
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const int* const codes,
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const int* const symbols,
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int max_symbol,
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int num_symbols);
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#if defined(__cplusplus) || defined(c_plusplus)
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} // extern "C"
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