dany/libwebp
1
0
Fork 0
mirror of https://github.com/webmproject/libwebp.git synced 2024-12-26 05:38:22 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge "move MIN/MAX_HISTO_BITS to format_constants.h" into 0.2.0

Browse Source
This commit is contained in:
James Zern 2012-07-16 19:19:32 -07:00 committed by Gerrit Code Review
commit d708ec1452
2 changed files with 7 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/enc/vp8l.c
View File

@ -28,8 +28,6 @@ extern "C" {
#define PALETTE_KEY_RIGHT_SHIFT 22 // Key for 1K buffer.
#define MAX_HUFF_IMAGE_SIZE (16 * 1024 * 1024)
#define MIN_HISTO_BITS 2
#define MAX_HISTO_BITS 9
// -----------------------------------------------------------------------------
// Palette
@ -517,7 +515,8 @@ static int EncodeImageInternal(VP8LBitWriter* const bw,
VP8LBackwardRefs refs;
uint16_t* const histogram_symbols =
(uint16_t*)malloc(histogram_image_xysize * sizeof(*histogram_symbols));
assert(histogram_bits >= MIN_HISTO_BITS && histogram_bits <= MAX_HISTO_BITS);
assert(histogram_bits >= MIN_HUFFMAN_BITS);
assert(histogram_bits <= MAX_HUFFMAN_BITS);
if (histogram_image == NULL || histogram_symbols == NULL) goto Error;
// Calculate backward references from ARGB image.
@ -894,8 +893,8 @@ static int GetHistoBits(const WebPConfig* const config,
if (huff_image_size <= MAX_HUFF_IMAGE_SIZE) break;
++histo_bits;
}
return (histo_bits < MIN_HISTO_BITS) ? MIN_HISTO_BITS :
(histo_bits > MAX_HISTO_BITS) ? MAX_HISTO_BITS : histo_bits;
return (histo_bits < MIN_HUFFMAN_BITS) ? MIN_HUFFMAN_BITS :
(histo_bits > MAX_HUFFMAN_BITS) ? MAX_HUFFMAN_BITS : histo_bits;
}
static void InitEncParams(VP8LEncoder* const enc) {

3
src/webp/format_constants.h
View File

@ -40,6 +40,9 @@
#define NUM_DISTANCE_CODES 40
#define CODE_LENGTH_CODES 19
#define MIN_HUFFMAN_BITS 2 // min number of Huffman bits
#define MAX_HUFFMAN_BITS 9 // max number of Huffman bits
#define TRANSFORM_PRESENT 1 // The bit to be written when next data
// to be read is a transform.
#define NUM_TRANSFORMS 4 // Maximum number of allowed transform