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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_EXTERNAL_TEXTURE_HELPER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_EXTERNAL_TEXTURE_HELPER_H_
#include <array>
#include "base/memory/raw_ptr.h"
#include "media/base/video_frame.h"
#include "third_party/blink/renderer/modules/webgpu/dawn_object.h"
#include "third_party/blink/renderer/platform/graphics/predefined_color_space.h"
namespace gfx {
class ColorSpace;
} // namespace gfx
namespace media {
class PaintCanvasVideoRenderer;
} // namespace media
namespace blink {
class ExceptionState;
class HTMLVideoElement;
class VideoFrame;
class WebGPUMailboxTexture;
struct ColorSpaceConversionConstants {
std::array<float, 9> gamut_conversion_matrix;
std::array<float, 7> src_transfer_constants;
std::array<float, 7> dst_transfer_constants;
};
struct ExternalTextureSource {
scoped_refptr<media::VideoFrame> media_video_frame = nullptr;
raw_ptr<media::PaintCanvasVideoRenderer> video_renderer = nullptr;
std::optional<media::VideoFrame::ID> media_video_frame_unique_id =
std::nullopt;
bool valid = false;
};
struct ExternalTexture {
wgpu::ExternalTexture wgpu_external_texture = nullptr;
scoped_refptr<WebGPUMailboxTexture> mailbox_texture = nullptr;
bool is_zero_copy = false;
};
std::array<float, 12> GetYUVToRGBMatrix(gfx::ColorSpace color_space,
size_t bit_depth);
ColorSpaceConversionConstants GetColorSpaceConversionConstants(
gfx::ColorSpace src_color_space,
gfx::ColorSpace dst_color_space);
bool IsSameGamutAndGamma(gfx::ColorSpace src_color_space,
gfx::ColorSpace dst_color_space);
ExternalTextureSource GetExternalTextureSourceFromVideoElement(
HTMLVideoElement* video,
ExceptionState& exception_state);
ExternalTextureSource GetExternalTextureSourceFromVideoFrame(
VideoFrame* frame,
ExceptionState& exception_state);
ExternalTexture CreateExternalTexture(
GPUDevice* device,
PredefinedColorSpace dst_predefined_color_space,
scoped_refptr<media::VideoFrame> media_video_frame,
media::PaintCanvasVideoRenderer* video_renderer);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBGPU_EXTERNAL_TEXTURE_HELPER_H_
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