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1 // Copyright 2012 Google Inc. All Rights Reserved. | 1 // Copyright 2012 Google Inc. All Rights Reserved. |
2 // | 2 // |
3 // Use of this source code is governed by a BSD-style license | 3 // Use of this source code is governed by a BSD-style license |
4 // that can be found in the COPYING file in the root of the source | 4 // that can be found in the COPYING file in the root of the source |
5 // tree. An additional intellectual property rights grant can be found | 5 // tree. An additional intellectual property rights grant can be found |
6 // in the file PATENTS. All contributing project authors may | 6 // in the file PATENTS. All contributing project authors may |
7 // be found in the AUTHORS file in the root of the source tree. | 7 // be found in the AUTHORS file in the root of the source tree. |
8 // ----------------------------------------------------------------------------- | 8 // ----------------------------------------------------------------------------- |
9 // | 9 // |
10 // Color Cache for WebP Lossless | 10 // Color Cache for WebP Lossless |
11 // | 11 // |
12 // Author: Jyrki Alakuijala (jyrki@google.com) | 12 // Author: Jyrki Alakuijala (jyrki@google.com) |
13 | 13 |
14 #include <assert.h> | 14 #include <assert.h> |
15 #include <stdlib.h> | 15 #include <stdlib.h> |
16 #include <string.h> | 16 #include <string.h> |
17 #include "./color_cache.h" | 17 #include "./color_cache.h" |
18 #include "../utils/utils.h" | 18 #include "./utils.h" |
19 | 19 |
20 //------------------------------------------------------------------------------ | 20 //------------------------------------------------------------------------------ |
21 // VP8LColorCache. | 21 // VP8LColorCache. |
22 | 22 |
23 int VP8LColorCacheInit(VP8LColorCache* const cc, int hash_bits) { | 23 int VP8LColorCacheInit(VP8LColorCache* const cc, int hash_bits) { |
24 const int hash_size = 1 << hash_bits; | 24 const int hash_size = 1 << hash_bits; |
25 assert(cc != NULL); | 25 assert(cc != NULL); |
26 assert(hash_bits > 0); | 26 assert(hash_bits > 0); |
27 cc->colors_ = (uint32_t*)WebPSafeCalloc((uint64_t)hash_size, | 27 cc->colors_ = (uint32_t*)WebPSafeCalloc((uint64_t)hash_size, |
28 sizeof(*cc->colors_)); | 28 sizeof(*cc->colors_)); |
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40 } | 40 } |
41 | 41 |
42 void VP8LColorCacheCopy(const VP8LColorCache* const src, | 42 void VP8LColorCacheCopy(const VP8LColorCache* const src, |
43 VP8LColorCache* const dst) { | 43 VP8LColorCache* const dst) { |
44 assert(src != NULL); | 44 assert(src != NULL); |
45 assert(dst != NULL); | 45 assert(dst != NULL); |
46 assert(src->hash_bits_ == dst->hash_bits_); | 46 assert(src->hash_bits_ == dst->hash_bits_); |
47 memcpy(dst->colors_, src->colors_, | 47 memcpy(dst->colors_, src->colors_, |
48 ((size_t)1u << dst->hash_bits_) * sizeof(*dst->colors_)); | 48 ((size_t)1u << dst->hash_bits_) * sizeof(*dst->colors_)); |
49 } | 49 } |
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