gecko-dev/dom/media/MediaContentType.cpp

61 строка
1.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#include "MediaContentType.h"
#include "nsContentTypeParser.h"
namespace mozilla {
MediaContentType::MediaContentType(const nsAString& aType)
{
Populate(aType);
}
MediaContentType::MediaContentType(const nsACString& aType)
{
NS_ConvertUTF8toUTF16 typeUTF16(aType);
Populate(typeUTF16);
}
static int32_t
GetParameterAsNumber(const nsContentTypeParser& aParser,
const char* aParameter,
const int32_t aErrorReturn)
{
nsAutoString parameterString;
nsresult rv = aParser.GetParameter(aParameter, parameterString);
if (NS_FAILED_impl(rv)) {
return aErrorReturn;
}
int32_t number = parameterString.ToInteger(&rv);
if (MOZ_UNLIKELY(NS_FAILED_impl(rv))) {
return aErrorReturn;
}
return number;
}
void
MediaContentType::Populate(const nsAString& aType)
{
nsContentTypeParser parser(aType);
nsAutoString mime;
nsresult rv = parser.GetType(mime);
if (NS_SUCCEEDED(rv)) {
mMIMEType = NS_ConvertUTF16toUTF8(mime);
}
rv = parser.GetParameter("codecs", mCodecs);
mHaveCodecs = NS_SUCCEEDED(rv);
mWidth = GetParameterAsNumber(parser, "width", -1);
mHeight = GetParameterAsNumber(parser, "height", -1);
mFramerate = GetParameterAsNumber(parser, "framerate", -1);
mBitrate = GetParameterAsNumber(parser, "bitrate", -1);
}
} // namespace mozilla