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Side by Side Diff: third_party/libwebp/dec/alpha_dec.c

Issue 2651883004: libwebp-0.6.0-rc1 (Closed)
Patch Set: Created 3 years, 11 months ago
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1 // Copyright 2011 Google Inc. All Rights Reserved. 1 // Copyright 2011 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 // Alpha-plane decompression. 10 // Alpha-plane decompression.
11 // 11 //
12 // Author: Skal (pascal.massimino@gmail.com) 12 // Author: Skal (pascal.massimino@gmail.com)
13 13
14 #include <stdlib.h> 14 #include <stdlib.h>
15 #include "./alphai.h" 15 #include "./alphai_dec.h"
16 #include "./vp8i.h" 16 #include "./vp8i_dec.h"
17 #include "./vp8li.h" 17 #include "./vp8li_dec.h"
18 #include "../dsp/dsp.h" 18 #include "../dsp/dsp.h"
19 #include "../utils/quant_levels_dec.h" 19 #include "../utils/quant_levels_dec_utils.h"
20 #include "../utils/utils.h" 20 #include "../utils/utils.h"
21 #include "../webp/format_constants.h" 21 #include "../webp/format_constants.h"
22 22
23 //------------------------------------------------------------------------------ 23 //------------------------------------------------------------------------------
24 // ALPHDecoder object. 24 // ALPHDecoder object.
25 25
26 // Allocates a new alpha decoder instance. 26 // Allocates a new alpha decoder instance.
27 static ALPHDecoder* ALPHNew(void) { 27 static ALPHDecoder* ALPHNew(void) {
28 ALPHDecoder* const dec = (ALPHDecoder*)WebPSafeCalloc(1ULL, sizeof(*dec)); 28 ALPHDecoder* const dec = (ALPHDecoder*)WebPSafeCalloc(1ULL, sizeof(*dec));
29 return dec; 29 return dec;
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223 } 223 }
224 } 224 }
225 225
226 // Return a pointer to the current decoded row. 226 // Return a pointer to the current decoded row.
227 return dec->alpha_plane_ + row * width; 227 return dec->alpha_plane_ + row * width;
228 228
229 Error: 229 Error:
230 WebPDeallocateAlphaMemory(dec); 230 WebPDeallocateAlphaMemory(dec);
231 return NULL; 231 return NULL;
232 } 232 }
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