15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2011 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/filters/in_memory_url_protocol.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu#include "media/ffmpeg/ffmpeg_common.h" 85c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace media { 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)InMemoryUrlProtocol::InMemoryUrlProtocol(const uint8* data, int64 size, 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool streaming) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : data_(data), 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_(size >= 0 ? size : 0), 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) position_(0), 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) streaming_(streaming) { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)InMemoryUrlProtocol::~InMemoryUrlProtocol() {} 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int InMemoryUrlProtocol::Read(int size, uint8* data) { 225c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (size < 0) 235c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return AVERROR(EIO); 245c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 255c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu int64 available_bytes = size_ - position_; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (size > available_bytes) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size = available_bytes; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (size > 0) { 305c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu memcpy(data, data_ + position_, size); 315c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu position_ += size; 325c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu } 335c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return size; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool InMemoryUrlProtocol::GetPosition(int64* position_out) { 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!position_out) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *position_out = position_; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool InMemoryUrlProtocol::SetPosition(int64 position) { 463551c9c881056c480085172ff9840cab31610854Torne (Richard Coles) if (position < 0 || position > size_) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) position_ = position; 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool InMemoryUrlProtocol::GetSize(int64* size_out) { 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!size_out) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *size_out = size_; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool InMemoryUrlProtocol::IsStreaming() { 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return streaming_; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace media 65