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/* Copyright (c) 2011 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Defines the image data API. */
/* Bitmap formats. */
enum PP_ImageDataFormat {
/* 32 bits, BGRA byte order, premultiplied alpha */
PP_IMAGEDATAFORMAT_BGRA_PREMUL = 0,
/* 32 bits, RGBA byte order, premultiplied alpha */
PP_IMAGEDATAFORMAT_RGBA_PREMUL = 1
};
/* Description of a bitmap. */
struct PP_ImageDataDesc {
/* Byte format. */
PP_ImageDataFormat format;
/* Size of the bitmap in pixels. */
PP_Size size;
/* The row width in bytes. This may be different than width * 4 since there
* may be padding at the end of the lines.
*/
int32_t stride;
};
/* Interface for manipulating 2D bitmaps. */
interface PPB_ImageData_0_3 {
/* Returns the browser's preferred format for image data. This format will be
* the format is uses internally for painting. Other formats may require
* internal conversions to paint or may have additional restrictions depending
* on the function.
*/
PP_ImageDataFormat GetNativeImageDataFormat();
/* Returns PP_TRUE if the given image data format is supported by the browser.
*/
PP_Bool IsImageDataFormatSupported(
[in] PP_ImageDataFormat format);
/* Allocates an image data resource with the given format and size. The
* return value will have a nonzero ID on success, or zero on failure.
* Failure means the instance, image size, or format was invalid.
*
* Set the init_to_zero flag if you want the bitmap initialized to
* transparent during the creation process. If this flag is not set, the
* current contents of the bitmap will be undefined, and the plugin should
* be sure to set all the pixels.
*
* For security reasons, if uninitialized, the bitmap will not contain random
* memory, but may contain data from a previous image produced by the same
* plugin if the bitmap was cached and re-used.
*/
PP_Resource Create(
[in] PP_Instance instance,
[in] PP_ImageDataFormat format,
[in] PP_Size size,
[in] PP_Bool init_to_zero);
/* Returns PP_TRUE if the given resource is an image data. Returns PP_FALSE if
* the resource is invalid or some type other than an image data.
*/
PP_Bool IsImageData(
[in] PP_Resource image_data);
/* Computes the description of the image data. Returns PP_TRUE on success,
* PP_FALSE if the resource is not an image data. On PP_FALSE, the |desc|
* structure will be filled with 0.
*/
PP_Bool Describe(
[in] PP_Resource image_data,
[out] PP_ImageDataDesc desc);
/* Maps this bitmap into the plugin address space and returns a pointer to the
* beginning of the data.
*/
mem_t Map(
[in] PP_Resource image_data);
/* Unmaps this bitmaps from the plugin address space */
void Unmap(
[in] PP_Resource image_data);
};
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