mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-06-06 22:29:34 +00:00
68 lines
1.6 KiB
C++
68 lines
1.6 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/. */
|
|
|
|
#include "mp4_demuxer/ResourceStream.h"
|
|
|
|
namespace mp4_demuxer {
|
|
|
|
ResourceStream::ResourceStream(mozilla::MediaResource* aResource)
|
|
: mResource(aResource)
|
|
, mPinCount(0)
|
|
{
|
|
MOZ_ASSERT(aResource);
|
|
}
|
|
|
|
ResourceStream::~ResourceStream()
|
|
{
|
|
MOZ_ASSERT(mPinCount == 0);
|
|
}
|
|
|
|
bool
|
|
ResourceStream::ReadAt(int64_t aOffset, void* aBuffer, size_t aCount,
|
|
size_t* aBytesRead)
|
|
{
|
|
uint32_t sum = 0;
|
|
uint32_t bytesRead = 0;
|
|
do {
|
|
uint64_t offset = aOffset + sum;
|
|
char* buffer = reinterpret_cast<char*>(aBuffer) + sum;
|
|
uint32_t toRead = aCount - sum;
|
|
nsresult rv = mResource->ReadAt(offset, buffer, toRead, &bytesRead);
|
|
if (NS_FAILED(rv)) {
|
|
return false;
|
|
}
|
|
sum += bytesRead;
|
|
} while (sum < aCount && bytesRead > 0);
|
|
|
|
*aBytesRead = sum;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ResourceStream::CachedReadAt(int64_t aOffset, void* aBuffer, size_t aCount,
|
|
size_t* aBytesRead)
|
|
{
|
|
nsresult rv = mResource->ReadFromCache(reinterpret_cast<char*>(aBuffer),
|
|
aOffset, aCount);
|
|
if (NS_FAILED(rv)) {
|
|
*aBytesRead = 0;
|
|
return false;
|
|
}
|
|
*aBytesRead = aCount;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
ResourceStream::Length(int64_t* aSize)
|
|
{
|
|
if (mResource->GetLength() < 0)
|
|
return false;
|
|
*aSize = mResource->GetLength();
|
|
return true;
|
|
}
|
|
|
|
} // namespace mp4_demuxer
|