| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| /* |
| This PVA_FF_HandlerAtom Class declares the nature of the media in the stream. |
| */ |
| |
| #define IMPLEMENT_HandlerAtom |
| |
| #include "handleratom.h" |
| #include "a_atomdefs.h" |
| #include "atomutils.h" |
| |
| // Constructor |
| PVA_FF_HandlerAtom::PVA_FF_HandlerAtom(int32 handlerType, uint8 version, uint32 flags) |
| : PVA_FF_FullAtom(HANDLER_ATOM, version, flags) |
| { |
| init(handlerType); |
| recomputeSize(); |
| } |
| |
| // Destructor |
| PVA_FF_HandlerAtom::~PVA_FF_HandlerAtom() |
| { |
| // Empty |
| } |
| |
| void |
| PVA_FF_HandlerAtom::init(int32 handlerType) |
| { |
| switch (handlerType) |
| { |
| case MEDIA_TYPE_AUDIO: |
| _handlerType = MEDIA_TYPE_AUDIO; |
| _name = "SoundHandler"; |
| break; |
| case MEDIA_TYPE_TEXT: |
| _handlerType = MEDIA_TYPE_TEXT; |
| _name = "TextHandler"; |
| break; |
| case MEDIA_TYPE_VISUAL: |
| _handlerType = MEDIA_TYPE_VISUAL; |
| _name = "VideoHandler"; |
| break; |
| default: |
| _handlerType = UNKNOWN_HANDLER; // Error condition! |
| _name = "UNKNOWNHandler"; |
| break; |
| } |
| |
| reserved1 = 0; |
| } |
| |
| void |
| PVA_FF_HandlerAtom::recomputeSize() |
| { |
| int32 size = getDefaultSize(); |
| size += 4; // For 4 bytes of missed 0 |
| size += 4; // For handlerType |
| size += 12; // For (8)[12] reserved |
| size += _name.get_size() + 1; // +1 for null termination |
| |
| _size = size; |
| |
| } |
| |
| // Rendering the PVA_FF_Atom in proper format (bitlengths, etc.) to an ostream |
| bool |
| PVA_FF_HandlerAtom::renderToFileStream(MP4_AUTHOR_FF_FILE_IO_WRAP *fp) |
| { |
| int32 rendered = 0; // Keep track of number of bytes rendered |
| |
| // Render PVA_FF_Atom type and size |
| if (!renderAtomBaseMembers(fp)) |
| { |
| return false; |
| } |
| rendered += getDefaultSize(); |
| |
| if (!PVA_FF_AtomUtils::render32(fp, 0)) |
| { |
| return false; |
| } |
| rendered += 4; |
| |
| if (!PVA_FF_AtomUtils::render32(fp, _handlerType)) |
| { |
| return false; |
| } |
| rendered += 4; |
| |
| uint8 reserved = 0; |
| for (int32 i = 0; i < 12; i++) |
| { |
| if (!PVA_FF_AtomUtils::render8(fp, reserved)) |
| { |
| return false; |
| } |
| } |
| rendered += 12; |
| |
| if (!PVA_FF_AtomUtils::renderNullTerminatedString(fp, _name)) |
| { |
| return false; |
| } |
| rendered += _name.get_size() + 1; |
| |
| return true; |
| } |
| |