gfx/2d/Scale.h@97036ab72558 (annotated)
gfx/2d/Scale.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef MOZILLA_GFX_SCALE_H_ |
| michael@0 | 6 | #define MOZILLA_GFX_SCALE_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | #include "Types.h" |
| michael@0 | 9 | |
| michael@0 | 10 | namespace mozilla { |
| michael@0 | 11 | namespace gfx { |
| michael@0 | 12 | |
| michael@0 | 13 | /** |
| michael@0 | 14 | * Scale an image using a high-quality filter. |
| michael@0 | 15 | * |
| michael@0 | 16 | * Synchronously scales an image and writes the output to the destination in |
| michael@0 | 17 | * 32-bit format. The destination must be pre-allocated by the caller. |
| michael@0 | 18 | * |
| michael@0 | 19 | * Returns true if scaling was successful, and false otherwise. Currently, this |
| michael@0 | 20 | * function is implemented using Skia. If Skia is not enabled when building, |
| michael@0 | 21 | * calling this function will always return false. |
| michael@0 | 22 | * |
| michael@0 | 23 | * IMPLEMTATION NOTES: |
| michael@0 | 24 | * This API is not currently easily hardware acceleratable. A better API might |
| michael@0 | 25 | * take a SourceSurface and return a SourceSurface; the Direct2D backend, for |
| michael@0 | 26 | * example, could simply set a status bit on a copy of the image, and use |
| michael@0 | 27 | * Direct2D's high-quality scaler at draw time. |
| michael@0 | 28 | */ |
| michael@0 | 29 | GFX2D_API bool Scale(uint8_t* srcData, int32_t srcWidth, int32_t srcHeight, int32_t srcStride, |
| michael@0 | 30 | uint8_t* dstData, int32_t dstWidth, int32_t dstHeight, int32_t dstStride, |
| michael@0 | 31 | SurfaceFormat format); |
| michael@0 | 32 | |
| michael@0 | 33 | } |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | #endif /* MOZILLA_GFX_BLUR_H_ */ |
