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make HistogramAdd() a pointer in dsp

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* merged the two HistogramAdd/AddEval() into a single call
  (with detection of special case when b==out)
* added a SSE2 variant
* harmonize the histogram type to 'uint32_t' instead
  of just 'int'. This has a lot of ripples on signatures.
* 1-2% faster

Change-Id: I10299ff300f36cdbca5a560df1ae4d4df149d306
This commit is contained in:
Pascal Massimino
2014-04-28 02:11:46 -07:00
committed by skal
parent c8bbb636ea
commit b3a616b356
10 changed files with 230 additions and 124 deletions
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4
src/utils/huffman_encode.h
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@ -36,7 +36,7 @@ typedef struct {
// Struct to represent the Huffman tree.
// TODO(vikasa): Add comment for the fields of the Struct.
typedef struct {
int total_count_;
uint32_t total_count_;
int value_;
int pool_index_left_; // Index for the left sub-tree.
int pool_index_right_; // Index for the right sub-tree.
@ -50,7 +50,7 @@ int VP8LCreateCompressedHuffmanTree(const HuffmanTreeCode* const tree,
// Create an optimized tree, and tokenize it.
// 'buf_rle' and 'huff_tree' are pre-allocated and the 'tree' is the constructed
// huffman code tree.
void VP8LCreateHuffmanTree(int* const histogram, int tree_depth_limit,
void VP8LCreateHuffmanTree(uint32_t* const histogram, int tree_depth_limit,
uint8_t* const buf_rle, HuffmanTree* const huff_tree,
HuffmanTreeCode* const tree);