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// Copyright 2018 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.
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <vector>
#include "base/callback.h"
#include "base/containers/span.h"
#include "gpu/config/gpu_info.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "ui/gfx/buffer_types.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace gpu {
// An ImageDecodeAcceleratorWorker handles the actual hardware-accelerated
// decode of an image of a specific type (e.g., JPEG, WebP, etc.).
class ImageDecodeAcceleratorWorker {
virtual ~ImageDecodeAcceleratorWorker() {}
// Encapsulates the result of a decode request.
struct DecodeResult {
gfx::GpuMemoryBufferHandle handle;
gfx::Size visible_size;
gfx::BufferFormat buffer_format;
size_t buffer_byte_size;
SkYUVColorSpace yuv_color_space;
using CompletedDecodeCB =
// Returns the profiles supported by this worker. A worker is allowed to
// support multiple image types (e.g., JPEG and WebP), but only one
// ImageDecodeAcceleratorSupportedProfile should be returned per supported
// image type. If the supported profiles can't be computed, an empty vector is
// returned.
virtual std::vector<ImageDecodeAcceleratorSupportedProfile>
GetSupportedProfiles() = 0;
// Enqueue a decode of |encoded_data|. The |decode_cb| is called
// asynchronously when the decode completes passing as parameter DecodeResult
// containing a reference to the decoded image (in the form of a
// gfx::GpuMemoryBufferHandle). The |buffer_byte_size| is the size of the
// buffer that |handle| refers to. For a successful decode, implementations
// must guarantee that |visible_size| == |output_size|.
// If the decode fails, |decode_cb| is called asynchronously with nullptr.
// Callbacks should be called in the order that this method is called.
virtual void Decode(std::vector<uint8_t> encoded_data,
const gfx::Size& output_size,
CompletedDecodeCB decode_cb) = 0;
} // namespace gpu