af93bdd6bc
there's still some malloc/free in the external example This is an encoder API change because of the introduction of WebPMemoryWriterClear() for symmetry reasons. The MemoryWriter object should probably go in examples/ instead of being in the main lib, though. mux_types.h stil contain some inlined free()/malloc() that are harder to remove (we need to put them in the libwebputils lib and make sure link is ok). Left as a TODO for now. Also: WebPDecodeRGB*() function are still returning a pointer that needs to be free()'d. We should call WebPSafeFree() on these, but it means exposing the whole mechanism. TODO(later). Change-Id: Iad2c9060f7fa6040e3ba489c8b07f4caadfab77b
40 lines
1.2 KiB
C
40 lines
1.2 KiB
C
// Copyright 2012 Google Inc. All Rights Reserved.
|
|
//
|
|
// Use of this source code is governed by a BSD-style license
|
|
// that can be found in the COPYING file in the root of the source
|
|
// tree. An additional intellectual property rights grant can be found
|
|
// in the file PATENTS. All contributing project authors may
|
|
// be found in the AUTHORS file in the root of the source tree.
|
|
// -----------------------------------------------------------------------------
|
|
//
|
|
// Color Cache for WebP Lossless
|
|
//
|
|
// Author: Jyrki Alakuijala (jyrki@google.com)
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include "./color_cache.h"
|
|
#include "../utils/utils.h"
|
|
|
|
//------------------------------------------------------------------------------
|
|
// VP8LColorCache.
|
|
|
|
int VP8LColorCacheInit(VP8LColorCache* const cc, int hash_bits) {
|
|
const int hash_size = 1 << hash_bits;
|
|
assert(cc != NULL);
|
|
assert(hash_bits > 0);
|
|
cc->colors_ = (uint32_t*)WebPSafeCalloc((uint64_t)hash_size,
|
|
sizeof(*cc->colors_));
|
|
if (cc->colors_ == NULL) return 0;
|
|
cc->hash_shift_ = 32 - hash_bits;
|
|
return 1;
|
|
}
|
|
|
|
void VP8LColorCacheClear(VP8LColorCache* const cc) {
|
|
if (cc != NULL) {
|
|
WebPSafeFree(cc->colors_);
|
|
cc->colors_ = NULL;
|
|
}
|
|
}
|
|
|