blob: 6f75bb9a25162d88413b647e98409ea3a19a2d99 [file] [log] [blame]
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/filters/in_memory_url_protocol.h"
#include "media/ffmpeg/ffmpeg_common.h"
namespace media {
InMemoryUrlProtocol::InMemoryUrlProtocol(const uint8_t* data,
int64_t size,
bool streaming)
: data_(data),
size_(size >= 0 ? size : 0),
position_(0),
streaming_(streaming) {}
InMemoryUrlProtocol::~InMemoryUrlProtocol() = default;
int InMemoryUrlProtocol::Read(int size, uint8_t* data) {
// Not sure this can happen, but it's unclear from the ffmpeg code, so guard
// against it.
if (size < 0)
return AVERROR(EIO);
if (!size)
return 0;
const int64_t available_bytes = size_ - position_;
if (available_bytes <= 0)
return AVERROR_EOF;
if (size > available_bytes)
size = available_bytes;
if (size > 0) {
memcpy(data, data_ + position_, size);
position_ += size;
}
return size;
}
bool InMemoryUrlProtocol::GetPosition(int64_t* position_out) {
if (!position_out)
return false;
*position_out = position_;
return true;
}
bool InMemoryUrlProtocol::SetPosition(int64_t position) {
if (position < 0 || position > size_)
return false;
position_ = position;
return true;
}
bool InMemoryUrlProtocol::GetSize(int64_t* size_out) {
if (!size_out)
return false;
*size_out = size_;
return true;
}
bool InMemoryUrlProtocol::IsStreaming() {
return streaming_;
}
} // namespace media