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Add EncodeImageInternal() method.

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Most of changes in enc/vp8l.c is cherry-picked from src/lossless/encode.c

Change-Id: I27938cb2590eccbfe1db0a454343e856bd483e75
This commit is contained in:
Vikas Arora
2012-04-12 11:31:17 +00:00
committed by James Zern
parent 6b38378acb
commit 84547f540c
7 changed files with 760 additions and 43 deletions
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21
src/utils/huffman_encode.c
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@ -70,9 +70,9 @@ static void SetDepth(const HuffmanTree* p,
// we are not planning to use this with extremely long blocks.
//
// See http://en.wikipedia.org/wiki/Huffman_coding
int CreateHuffmanTree(const int* const histogram, int histogram_size,
int tree_depth_limit,
uint8_t* const bit_depths) {
int VP8LCreateHuffmanTree(const int* const histogram, int histogram_size,
int tree_depth_limit,
uint8_t* const bit_depths) {
HuffmanTree* tree;
HuffmanTree* tree_pool;
int tree_pool_size;
@ -241,11 +241,11 @@ static void WriteHuffmanTreeRepetitionsZeros(
}
}
void CreateCompressedHuffmanTree(const uint8_t* depth,
int depth_size,
int* num_symbols,
uint8_t* tree,
uint8_t* extra_bits_data) {
void VP8LCreateCompressedHuffmanTree(const uint8_t* depth,
int depth_size,
int* num_symbols,
uint8_t* tree,
uint8_t* extra_bits_data) {
int prev_value = 8; // 8 is the initial value for rle.
int i;
for (i = 0; i < depth_size;) {
@ -280,8 +280,8 @@ static uint32_t ReverseBits(int num_bits, uint32_t bits) {
return retval;
}
void ConvertBitDepthsToSymbols(const uint8_t* depth, int len,
uint16_t* bits) {
void VP8LConvertBitDepthsToSymbols(const uint8_t* depth, int len,
uint16_t* bits) {
// This function is based on RFC 1951.
//
// In deflate, all bit depths are [1..15]
@ -313,5 +313,6 @@ void ConvertBitDepthsToSymbols(const uint8_t* depth, int len,
}
}
}
#undef MAX_BITS
#endif