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comparison: content/media/gstreamer/GStreamerFormatHelper.h
content/media/gstreamer/GStreamerFormatHelper.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:228abe62c26c |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* vim:set ts=2 sw=2 sts=2 et cindent: */ | |
| 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 file, | |
| 5 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #if !defined(GStreamerFormatHelper_h_) | |
| 8 #define GStreamerFormatHelper_h_ | |
| 9 | |
| 10 #include <gst/gst.h> | |
| 11 #include <mozilla/Types.h> | |
| 12 #include "nsXPCOMStrings.h" | |
| 13 | |
| 14 namespace mozilla { | |
| 15 | |
| 16 class GStreamerFormatHelper { | |
| 17 /* This class can be used to query the GStreamer registry for the required | |
| 18 * demuxers/decoders from nsHTMLMediaElement::CanPlayType. | |
| 19 * It implements looking at the GstRegistry to check if elements to | |
| 20 * demux/decode the formats passed to CanPlayType() are actually installed. | |
| 21 */ | |
| 22 public: | |
| 23 static GStreamerFormatHelper* Instance(); | |
| 24 ~GStreamerFormatHelper(); | |
| 25 | |
| 26 bool CanHandleMediaType(const nsACString& aMIMEType, | |
| 27 const nsAString* aCodecs); | |
| 28 | |
| 29 bool CanHandleContainerCaps(GstCaps* aCaps); | |
| 30 bool CanHandleCodecCaps(GstCaps* aCaps); | |
| 31 | |
| 32 static GstCaps* ConvertFormatsToCaps(const char* aMIMEType, | |
| 33 const nsAString* aCodecs); | |
| 34 | |
| 35 static void Shutdown(); | |
| 36 | |
| 37 private: | |
| 38 GStreamerFormatHelper(); | |
| 39 char* const *CodecListFromCaps(GstCaps* aCaps); | |
| 40 bool HaveElementsToProcessCaps(GstCaps* aCaps); | |
| 41 GList* GetFactories(); | |
| 42 | |
| 43 static GStreamerFormatHelper* gInstance; | |
| 44 | |
| 45 /* table to convert from container MIME types to GStreamer caps */ | |
| 46 static char const *const mContainers[6][2]; | |
| 47 | |
| 48 /* table to convert from codec MIME types to GStreamer caps */ | |
| 49 static char const *const mCodecs[9][2]; | |
| 50 | |
| 51 /* | |
| 52 * True iff we were able to find the proper GStreamer libs and the functions | |
| 53 * we need. | |
| 54 */ | |
| 55 static bool sLoadOK; | |
| 56 | |
| 57 /* whitelist of supported container/codec gst caps */ | |
| 58 GstCaps* mSupportedContainerCaps; | |
| 59 GstCaps* mSupportedCodecCaps; | |
| 60 | |
| 61 /* list of GStreamer element factories | |
| 62 * Element factories are the basic types retrieved from the GStreamer | |
| 63 * registry, they describe all plugins and elements that GStreamer can | |
| 64 * create. | |
| 65 * This means that element factories are useful for automated element | |
| 66 * instancing, such as what autopluggers do, | |
| 67 * and for creating lists of available elements. */ | |
| 68 GList* mFactories; | |
| 69 | |
| 70 /* Storage for the default registrys feature list cookie. | |
| 71 * It changes every time a feature is added to or removed from the | |
| 72 * GStreamer registry. */ | |
| 73 uint32_t mCookie; | |
| 74 }; | |
| 75 | |
| 76 } //namespace mozilla | |
| 77 | |
| 78 #endif |
