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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "media/remoting/interstitial.h" | |
| 6 | |
| 7 #include <algorithm> // for std::max() | |
| 8 | |
| 9 #include "media/base/localized_strings.h" | |
| 10 #include "media/base/video_frame.h" | |
| 11 #include "media/base/video_util.h" | |
| 12 #include "skia/ext/image_operations.h" | |
| 13 #include "third_party/skia/include/core/SkBitmap.h" | |
| 14 #include "third_party/skia/include/core/SkCanvas.h" | |
| 15 #include "third_party/skia/include/core/SkTypeface.h" | |
| 16 #include "third_party/skia/include/effects/SkBlurImageFilter.h" | |
| 17 #include "ui/gfx/color_palette.h" | |
| 18 #include "ui/gfx/geometry/size.h" | |
| 19 #include "ui/gfx/paint_vector_icon.h" | |
| 20 #include "ui/gfx/skbitmap_operations.h" | |
| 21 #include "ui/vector_icons/vector_icons.h" | |
| 22 | |
| 23 namespace media { | |
| 24 namespace remoting { | |
| 25 | |
| 26 namespace { | |
| 27 | |
| 28 // The interstitial frame size when |background_image| is empty or has low | |
| 29 // resolution. The frame height may be adjusted according to the aspect ratio of | |
| 30 // the |background_image|. | |
| 31 constexpr int kDefaultFrameWidth = 1280; | |
| 32 constexpr int kDefaultFrameHeight = 720; | |
| 33 | |
| 34 SkBitmap ResizeImage(const SkBitmap& image, const gfx::Size& scaled_size) { | |
| 35 DCHECK(!scaled_size.IsEmpty()); | |
| 36 | |
| 37 if (image.width() == scaled_size.width() && | |
| 38 image.height() == scaled_size.height()) | |
| 39 return image; | |
| 40 | |
| 41 return skia::ImageOperations::Resize( | |
| 42 image, skia::ImageOperations::RESIZE_BEST, scaled_size.width(), | |
| 43 scaled_size.height()); | |
| 44 } | |
| 45 | |
| 46 void RenderCastMessage(const gfx::Size& canvas_size, | |
| 47 InterstitialType type, | |
| 48 SkCanvas* canvas) { | |
| 49 DCHECK(canvas); | |
| 50 if (type == InterstitialType::BETWEEN_SESSIONS) | |
| 51 return; | |
| 52 | |
| 53 // Blur the background image. | |
| 54 constexpr SkScalar kSigma = SkIntToScalar(10); | |
| 55 SkPaint paint_blur; | |
| 56 paint_blur.setImageFilter(SkBlurImageFilter::Make(kSigma, kSigma, nullptr)); | |
| 57 canvas->saveLayer(0, &paint_blur); | |
| 58 canvas->restore(); | |
| 59 | |
| 60 // Create SkPaint for text and icon bitmap. | |
| 61 // After |paint| draws, the new canvas should look like this: | |
| 62 // _________________________________ | |
| 63 // | | | |
| 64 // | | | |
| 65 // | [ ] | | |
| 66 // | Casting Video... | | |
| 67 // | | | |
| 68 // |________________________________| | |
| 69 // | |
| 70 // Both text and icon are centered horizontally. Together, they are | |
| 71 // centered vertically. | |
| 72 SkPaint paint; | |
| 73 paint.setAntiAlias(true); | |
| 74 paint.setFilterQuality(kHigh_SkFilterQuality); | |
| 75 paint.setColor(SK_ColorLTGRAY); | |
| 76 paint.setTypeface(SkTypeface::MakeFromName( | |
| 77 "sans", SkFontStyle::FromOldStyle(SkTypeface::kNormal))); | |
| 78 const SkScalar text_height = SkIntToScalar(canvas_size.height() / 18); | |
| 79 paint.setTextSize(text_height); | |
| 80 | |
| 81 // Draw the appropriate text. | |
| 82 const std::string message = | |
| 83 (type == InterstitialType::IN_SESSION | |
| 84 ? GetLocalizedStringUTF8(MEDIA_REMOTING_CASTING_VIDEO_TEXT) | |
| 85 : GetLocalizedStringUTF8(MEDIA_REMOTING_CAST_ERROR_TEXT)); | |
| 86 SkScalar display_text_width = | |
| 87 paint.measureText(message.data(), message.size()); | |
| 88 SkScalar sk_text_offset_x = | |
| 89 SkScalarFloorToScalar((canvas_size.width() - display_text_width) / 2.0); | |
| 90 SkScalar sk_text_offset_y = | |
| 91 SkScalarFloorToScalar((canvas_size.height() / 2.0) + text_height); | |
| 92 canvas->drawText(message.data(), message.size(), sk_text_offset_x, | |
| 93 sk_text_offset_y, paint); | |
| 94 | |
| 95 // Draw the appropriate Cast icon. | |
| 96 const gfx::VectorIcon& current_icon = type == InterstitialType::IN_SESSION | |
| 97 ? ui::kMediaRouterActiveIcon | |
| 98 : ui::kMediaRouterWarningIcon; | |
| 99 gfx::ImageSkia icon_image = gfx::CreateVectorIcon( | |
| 100 current_icon, canvas_size.height() / 6, SK_ColorLTGRAY); | |
| 101 const SkBitmap* icon_bitmap = icon_image.bitmap(); | |
| 102 SkScalar sk_image_offset_x = (canvas_size.width() - icon_image.width()) / 2.0; | |
| 103 SkScalar sk_image_offset_y = | |
| 104 (canvas_size.height() / 2.0) - icon_image.height(); | |
| 105 canvas->drawBitmap(*icon_bitmap, sk_image_offset_x, sk_image_offset_y, | |
| 106 &paint); | |
| 107 } | |
| 108 | |
| 109 gfx::Size GetCanvasSize(const gfx::Size& image_size, | |
| 110 const gfx::Size& natural_size) { | |
| 111 if (natural_size.IsEmpty()) | |
| 112 return gfx::Size(kDefaultFrameWidth, kDefaultFrameHeight); | |
| 113 int width = std::max(image_size.width(), kDefaultFrameWidth) & ~1; | |
| 114 base::CheckedNumeric<int> height = width; | |
| 115 height *= natural_size.height(); | |
| 116 height /= natural_size.width(); | |
| 117 height &= ~1; | |
| 118 gfx::Size result = gfx::Size(width, height.ValueOrDefault(0)); | |
| 119 return result.IsEmpty() ? gfx::Size(kDefaultFrameWidth, kDefaultFrameHeight) | |
| 120 : result; | |
| 121 } | |
| 122 | |
| 123 } // namespace | |
| 124 | |
| 125 scoped_refptr<VideoFrame> RenderInterstitialFrame(const SkBitmap& image, | |
| 126 const gfx::Size& natural_size, | |
| 127 InterstitialType type) { | |
| 128 gfx::Size canvas_size = | |
| 129 GetCanvasSize(gfx::Size(image.width(), image.height()), natural_size); | |
| 130 SkBitmap canvas_bitmap; | |
| 131 canvas_bitmap.allocN32Pixels(canvas_size.width(), canvas_size.height()); | |
| 132 canvas_bitmap.eraseColor(SK_ColorBLACK); | |
| 133 SkCanvas canvas(canvas_bitmap); | |
| 134 | |
| 135 // Draw background image on the canvas. | |
| 136 if (!image.drawsNothing()) { | |
| 137 gfx::Rect centered_rect = ComputeLetterboxRegion( | |
| 138 gfx::Rect(canvas_size), gfx::Size(image.width(), image.height())); | |
| 139 SkBitmap processed_image = ResizeImage(image, centered_rect.size()); | |
| 140 if (type != InterstitialType::BETWEEN_SESSIONS) { | |
| 141 color_utils::HSL shift = {-1, 0, 0.2}; // Make monochromatic. | |
| 142 processed_image = | |
| 143 SkBitmapOperations::CreateHSLShiftedBitmap(processed_image, shift); | |
| 144 } | |
| 145 canvas.writePixels(processed_image, centered_rect.x(), centered_rect.y()); | |
| 146 } | |
| 147 | |
| 148 RenderCastMessage(canvas_size, type, &canvas); | |
| 149 | |
| 150 // Create a new VideoFrame, copy the bitmap, then return it. | |
| 151 scoped_refptr<VideoFrame> video_frame = VideoFrame::CreateFrame( | |
| 152 PIXEL_FORMAT_I420, canvas_size, gfx::Rect(canvas_size), canvas_size, | |
| 153 base::TimeDelta()); | |
| 154 if (video_frame) { | |
| 155 SkAutoLockPixels pixel_lock(canvas_bitmap); | |
| 156 CopyRGBToVideoFrame(reinterpret_cast<uint8_t*>(canvas_bitmap.getPixels()), | |
| 157 canvas_bitmap.rowBytes(), | |
| 158 gfx::Rect(canvas_size.width(), canvas_size.height()), | |
| 159 video_frame.get()); | |
| 160 } | |
| 161 return video_frame; | |
| 162 } | |
| 163 | |
| 164 } // namespace remoting | |
| 165 } // namespace media | |
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Chromium Code Reviews
Issue 2829003004:
Merge M59: Media Remoting: Remove old interstitial implementation. (Closed)
