The Tor Browser: gfx/2d/Scale.h@97036ab72558

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.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #ifndef MOZILLA_GFX_SCALE_H_

     6 #define MOZILLA_GFX_SCALE_H_

     8 #include "Types.h"

    10 namespace mozilla {

    11 namespace gfx {

    13 /**

    14  * Scale an image using a high-quality filter.

    15  *

    16  * Synchronously scales an image and writes the output to the destination in

    17  * 32-bit format. The destination must be pre-allocated by the caller.

    18  *

    19  * Returns true if scaling was successful, and false otherwise. Currently, this

    20  * function is implemented using Skia. If Skia is not enabled when building,

    21  * calling this function will always return false.

    22  *

    23  * IMPLEMTATION NOTES:

    24  * This API is not currently easily hardware acceleratable. A better API might

    25  * take a SourceSurface and return a SourceSurface; the Direct2D backend, for

    26  * example, could simply set a status bit on a copy of the image, and use

    27  * Direct2D's high-quality scaler at draw time.

    28  */

    29 GFX2D_API bool Scale(uint8_t* srcData, int32_t srcWidth, int32_t srcHeight, int32_t srcStride,

    30                      uint8_t* dstData, int32_t dstWidth, int32_t dstHeight, int32_t dstStride,

    31                      SurfaceFormat format);

    33 }

    34 }

    36 #endif /* MOZILLA_GFX_BLUR_H_ */

The Tor Browser / file revision

gfx/2d/Scale.h@97036ab72558

gfx/2d/Scale.h