gecko-dev/content/media/DecoderTraits.h

83 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef DecoderTraits_h_
#define DecoderTraits_h_
#include "nsAString.h"
namespace mozilla
{
enum CanPlayStatus {
CANPLAY_NO,
CANPLAY_MAYBE,
CANPLAY_YES
};
class DecoderTraits {
public:
// Returns the CanPlayStatus indicating if we can handle this
// MIME type. The MIME type should not include the codecs parameter.
// That parameter should be passed in aCodecs, and will only be
// used if whether a given MIME type being handled depends on the
// codec that will be used. If the codecs parameter has not been
// specified, pass false in aHaveRequestedCodecs.
static CanPlayStatus CanHandleMediaType(const char* aMIMEType,
bool aHaveRequestedCodecs,
const nsAString& aRequestedCodecs);
// Returns true if we should handle this MIME type when it appears
// as an <object> or as a toplevel page. If, in practice, our support
// for the type is more limited than appears in the wild, we should return
// false here even if CanHandleMediaType would return true.
static bool ShouldHandleMediaType(const char* aMIMEType);
#ifdef MOZ_RAW
static bool IsRawType(const nsACString& aType);
#endif
#ifdef MOZ_OGG
static bool IsOggType(const nsACString& aType);
#endif
#ifdef MOZ_WAVE
static bool IsWaveType(const nsACString& aType);
#endif
#ifdef MOZ_WEBM
static bool IsWebMType(const nsACString& aType);
#endif
#ifdef MOZ_GSTREAMER
// When enabled, use GStreamer for H.264, but not for codecs handled by our
// bundled decoders, unless the "media.prefer-gstreamer" pref is set.
static bool IsGStreamerSupportedType(const nsACString& aType);
static bool IsH264Type(const nsACString& aType);
#endif
#ifdef MOZ_WIDGET_GONK
static bool IsOmxSupportedType(const nsACString& aType);
#endif
#ifdef MOZ_MEDIA_PLUGINS
static bool IsMediaPluginsType(const nsACString& aType);
#endif
#ifdef MOZ_DASH
static bool IsDASHMPDType(const nsACString& aType);
#endif
#ifdef MOZ_WMF
static bool IsWMFSupportedType(const nsACString& aType);
#endif
};
}
#endif