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| 1 // Copyright 2012 Google Inc. All Rights Reserved. | 1 // Copyright 2012 Google Inc. All Rights Reserved. |
| 2 // | 2 // |
| 3 // This code is licensed under the same terms as WebM: | 3 // Use of this source code is governed by a BSD-style license |
| 4 // Software License Agreement: http://www.webmproject.org/license/software/ | 4 // that can be found in the COPYING file in the root of the source |
| 5 // Additional IP Rights Grant: http://www.webmproject.org/license/additional/ | 5 // tree. An additional intellectual property rights grant can be found |
| 6 // in the file PATENTS. All contributing project authors may |
| 7 // be found in the AUTHORS file in the root of the source tree. |
| 6 // ----------------------------------------------------------------------------- | 8 // ----------------------------------------------------------------------------- |
| 7 // | 9 // |
| 8 // Internal header for constants related to WebP file format. | 10 // Internal header for constants related to WebP file format. |
| 9 // | 11 // |
| 10 // Author: Urvang (urvang@google.com) | 12 // Author: Urvang (urvang@google.com) |
| 11 | 13 |
| 12 #ifndef WEBP_WEBP_FORMAT_CONSTANTS_H_ | 14 #ifndef WEBP_WEBP_FORMAT_CONSTANTS_H_ |
| 13 #define WEBP_WEBP_FORMAT_CONSTANTS_H_ | 15 #define WEBP_WEBP_FORMAT_CONSTANTS_H_ |
| 14 | 16 |
| 15 // Create fourcc of the chunk from the chunk tag characters. | 17 // Create fourcc of the chunk from the chunk tag characters. |
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| 77 #define MAX_IMAGE_AREA (1ULL << 32) // 32-bit max for width x height. | 79 #define MAX_IMAGE_AREA (1ULL << 32) // 32-bit max for width x height. |
| 78 #define MAX_LOOP_COUNT (1 << 16) // maximum value for loop-count | 80 #define MAX_LOOP_COUNT (1 << 16) // maximum value for loop-count |
| 79 #define MAX_DURATION (1 << 24) // maximum duration | 81 #define MAX_DURATION (1 << 24) // maximum duration |
| 80 #define MAX_POSITION_OFFSET (1 << 24) // maximum frame/fragment x/y offset | 82 #define MAX_POSITION_OFFSET (1 << 24) // maximum frame/fragment x/y offset |
| 81 | 83 |
| 82 // Maximum chunk payload is such that adding the header and padding won't | 84 // Maximum chunk payload is such that adding the header and padding won't |
| 83 // overflow a uint32_t. | 85 // overflow a uint32_t. |
| 84 #define MAX_CHUNK_PAYLOAD (~0U - CHUNK_HEADER_SIZE - 1) | 86 #define MAX_CHUNK_PAYLOAD (~0U - CHUNK_HEADER_SIZE - 1) |
| 85 | 87 |
| 86 #endif /* WEBP_WEBP_FORMAT_CONSTANTS_H_ */ | 88 #endif /* WEBP_WEBP_FORMAT_CONSTANTS_H_ */ |
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