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https://github.com/webmproject/libwebp.git
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c7e89cbb02
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files
based on the discussion in:
https://codereview.chromium.org/12771026/
Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
(cherry picked from commit d640614d54)
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
// Copyright 2012 Google Inc. All Rights Reserved.
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//
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// Use of this source code is governed by a BSD-style license
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// that can be found in the COPYING file in the root of the source
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// tree. An additional intellectual property rights grant can be found
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// in the file PATENTS. All contributing project authors may
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// be found in the AUTHORS file in the root of the source tree.
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// -----------------------------------------------------------------------------
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//
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// Color Cache for WebP Lossless
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//
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// Author: Jyrki Alakuijala (jyrki@google.com)
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#include <assert.h>
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#include <stdlib.h>
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#include "./color_cache.h"
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#include "../utils/utils.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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//------------------------------------------------------------------------------
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// VP8LColorCache.
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int VP8LColorCacheInit(VP8LColorCache* const cc, int hash_bits) {
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const int hash_size = 1 << hash_bits;
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assert(cc != NULL);
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assert(hash_bits > 0);
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cc->colors_ = (uint32_t*)WebPSafeCalloc((uint64_t)hash_size,
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sizeof(*cc->colors_));
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if (cc->colors_ == NULL) return 0;
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cc->hash_shift_ = 32 - hash_bits;
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return 1;
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}
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void VP8LColorCacheClear(VP8LColorCache* const cc) {
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if (cc != NULL) {
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free(cc->colors_);
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cc->colors_ = NULL;
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}
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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