tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

MediaControlUtils.h (4397B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef DOM_MEDIA_MEDIACONTROL_MEDIACONTROLUTILS_H_
      8 #define DOM_MEDIA_MEDIACONTROL_MEDIACONTROLUTILS_H_
      9 
     10 #include "MediaController.h"
     11 #include "imgIEncoder.h"
     12 #include "imgITools.h"
     13 #include "mozilla/Logging.h"
     14 #include "mozilla/dom/ChromeUtilsBinding.h"
     15 #include "mozilla/dom/MediaControllerBinding.h"
     16 #include "nsReadableUtils.h"
     17 #include "nsServiceManagerUtils.h"
     18 
     19 extern mozilla::LazyLogModule gMediaControlLog;
     20 
     21 namespace mozilla::dom {
     22 
     23 inline const char* ToMediaControlKeyStr(const Maybe<MediaControlKey>& aKey) {
     24  if (aKey.isNothing()) {
     25    MOZ_ASSERT_UNREACHABLE("Invalid action.");
     26    return "Unknown";
     27  }
     28  return GetEnumString(aKey.value()).get();
     29 }
     30 
     31 inline MediaControlKey ConvertMediaSessionActionToControlKey(
     32    MediaSessionAction aAction) {
     33  switch (aAction) {
     34    case MediaSessionAction::Play:
     35      return MediaControlKey::Play;
     36    case MediaSessionAction::Pause:
     37      return MediaControlKey::Pause;
     38    case MediaSessionAction::Seekbackward:
     39      return MediaControlKey::Seekbackward;
     40    case MediaSessionAction::Seekforward:
     41      return MediaControlKey::Seekforward;
     42    case MediaSessionAction::Previoustrack:
     43      return MediaControlKey::Previoustrack;
     44    case MediaSessionAction::Nexttrack:
     45      return MediaControlKey::Nexttrack;
     46    case MediaSessionAction::Skipad:
     47      return MediaControlKey::Skipad;
     48    case MediaSessionAction::Seekto:
     49      return MediaControlKey::Seekto;
     50    default:
     51      MOZ_ASSERT(aAction == MediaSessionAction::Stop);
     52      return MediaControlKey::Stop;
     53  }
     54 }
     55 
     56 inline const char* ToMediaAudibleStateStr(MediaAudibleState aState) {
     57  switch (aState) {
     58    case MediaAudibleState::eInaudible:
     59      return "inaudible";
     60    case MediaAudibleState::eAudible:
     61      return "audible";
     62    default:
     63      MOZ_ASSERT_UNREACHABLE("Invalid audible state.");
     64      return "Unknown";
     65  }
     66 }
     67 
     68 inline const char* ToMediaSessionPlaybackStateStr(
     69    const MediaSessionPlaybackState& aState) {
     70  switch (aState) {
     71    case MediaSessionPlaybackState::None:
     72      return "none";
     73    case MediaSessionPlaybackState::Paused:
     74      return "paused";
     75    case MediaSessionPlaybackState::Playing:
     76      return "playing";
     77    default:
     78      MOZ_ASSERT_UNREACHABLE("Invalid MediaSessionPlaybackState.");
     79      return "Unknown";
     80  }
     81 }
     82 
     83 BrowsingContext* GetAliveTopBrowsingContext(BrowsingContext* aBC);
     84 
     85 inline bool IsImageIn(const nsTArray<MediaImage>& aArtwork,
     86                      const nsAString& aImageUrl) {
     87  for (const MediaImage& image : aArtwork) {
     88    if (image.mSrc == aImageUrl) {
     89      return true;
     90    }
     91  }
     92  return false;
     93 }
     94 
     95 // The image buffer would be allocated in aStream whose size is aSize and the
     96 // buffer head is aBuffer
     97 inline nsresult GetEncodedImageBuffer(imgIContainer* aImage,
     98                                      const nsACString& aMimeType,
     99                                      nsIInputStream** aStream, uint32_t* aSize,
    100                                      char** aBuffer) {
    101  MOZ_ASSERT(aImage);
    102 
    103  nsCOMPtr<imgITools> imgTools = do_GetService("@mozilla.org/image/tools;1");
    104  if (!imgTools) {
    105    return NS_ERROR_FAILURE;
    106  }
    107 
    108  nsCOMPtr<nsIInputStream> inputStream;
    109  nsresult rv = imgTools->EncodeImage(aImage, aMimeType, u""_ns,
    110                                      getter_AddRefs(inputStream));
    111  if (NS_FAILED(rv)) {
    112    return rv;
    113  }
    114 
    115  if (!inputStream) {
    116    return NS_ERROR_FAILURE;
    117  }
    118 
    119  nsCOMPtr<imgIEncoder> encoder = do_QueryInterface(inputStream);
    120  if (!encoder) {
    121    return NS_ERROR_FAILURE;
    122  }
    123 
    124  rv = encoder->GetImageBufferUsed(aSize);
    125  if (NS_FAILED(rv)) {
    126    return rv;
    127  }
    128 
    129  rv = encoder->GetImageBuffer(aBuffer);
    130  if (NS_FAILED(rv)) {
    131    return rv;
    132  }
    133 
    134  encoder.forget(aStream);
    135  return NS_OK;
    136 }
    137 
    138 inline bool IsValidImageUrl(const nsAString& aUrl) {
    139  return StringBeginsWith(aUrl, u"http://"_ns) ||
    140         StringBeginsWith(aUrl, u"https://"_ns);
    141 }
    142 
    143 inline uint32_t GetMediaKeyMask(mozilla::dom::MediaControlKey aKey) {
    144  return 1 << static_cast<uint8_t>(aKey);
    145 }
    146 
    147 }  // namespace mozilla::dom
    148 
    149 #endif  // DOM_MEDIA_MEDIACONTROL_MEDIACONTROLUTILS_H_