| /* ------------------------------------------------------------------ |
| * 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. |
| * ------------------------------------------------------------------- |
| */ |
| /*********************************************************************************/ |
| /* ------------------------------------------------------------------- */ |
| /* MPEG-4 VisualSampleEntry Class */ |
| /* ------------------------------------------------------------------- */ |
| /*********************************************************************************/ |
| /* |
| This VisualSampleEntry Class is used for visual streams. |
| */ |
| |
| |
| #define IMPLEMENT_VisualSampleEntry |
| |
| #include "visualsampleentry.h" |
| #include "atomutils.h" |
| #include "atomdefs.h" |
| |
| #include "h263decoderspecificinfo.h" |
| |
| |
| VisualSampleEntry::VisualSampleEntry(MP4_FF_FILE *fp, uint32 size, uint32 type) |
| : SampleEntry(fp, size, type) |
| { |
| _pes = NULL; |
| |
| if (_success) |
| { |
| _pparent = NULL; |
| |
| // Read in all reserved members |
| for (int32 i = 0; i < 4; i++) |
| { |
| if (!AtomUtils::read32(fp, _reserved1[i])) |
| { |
| _success = false; |
| break; |
| } |
| } |
| |
| if (_success) |
| { |
| if (!AtomUtils::read32read32(fp, _reserved2, _reserved3)) |
| _success = false; |
| if (!AtomUtils::read32read32(fp, _reserved4, _reserved5)) |
| _success = false; |
| if (!AtomUtils::read16(fp, _reserved6)) |
| _success = false; |
| |
| for (int32 i = 0; i < 32; i++) |
| { |
| if (!AtomUtils::read8(fp, _reserved7[i])) |
| { |
| _success = false; |
| break; |
| } |
| } |
| |
| if (!AtomUtils::read16read16(fp, _reserved8, _reserved9)) |
| _success = false; |
| } |
| |
| if (_success) |
| { |
| uint32 atomType = UNKNOWN_ATOM; |
| uint32 atomSize = 0; |
| |
| AtomUtils::getNextAtomType(fp, atomSize, atomType); |
| |
| if (atomType == ESD_ATOM) |
| { |
| |
| PV_MP4_FF_NEW(fp->auditCB, ESDAtom, (fp, atomSize, atomType), _pes); |
| if (!_pes->MP4Success()) |
| { |
| _mp4ErrorCode = _pes->GetMP4Error(); |
| _success = false; |
| } |
| else |
| { |
| if (_pes->getObjectTypeIndication() == H263_VIDEO) |
| { |
| const ESDescriptor *_pdescriptor = _pes->getESDescriptorPtr(); |
| if (NULL != _pdescriptor) |
| { |
| H263DecoderSpecificInfo *_pH263decSpecificInfo = |
| (H263DecoderSpecificInfo *)(_pdescriptor->getDecoderSpecificInfo()); |
| if (NULL != _pH263decSpecificInfo) |
| { |
| if (_pH263decSpecificInfo->_max_height <= 0) |
| _pH263decSpecificInfo->_max_height = (uint16)((_reserved2 << 16) >> 16); |
| if (_pH263decSpecificInfo->_max_width <= 0) |
| _pH263decSpecificInfo->_max_width = (uint16)(_reserved2 >> 16); |
| } |
| } |
| } |
| _pes->setParent(this); |
| } |
| } |
| else |
| { |
| _success = false; |
| _mp4ErrorCode = READ_VISUAL_SAMPLE_ENTRY_FAILED; |
| } |
| } |
| else |
| { |
| _mp4ErrorCode = READ_VISUAL_SAMPLE_ENTRY_FAILED; |
| } |
| } |
| else |
| { |
| _mp4ErrorCode = READ_VISUAL_SAMPLE_ENTRY_FAILED; |
| } |
| |
| } |
| |
| // Destructor |
| VisualSampleEntry::~VisualSampleEntry() |
| { |
| if (_pes != NULL) |
| { |
| // Cleanup ESDAtom |
| PV_MP4_FF_DELETE(NULL, ESDAtom, _pes); |
| } |
| } |
| |
| uint32 VisualSampleEntry::getESID() const |
| { |
| if (_pes != NULL) |
| { |
| if (_pes->getESDescriptorPtr() != NULL) |
| { |
| return _pes->getESDescriptorPtr()->getESID(); |
| } |
| else |
| { |
| return 0; |
| } |
| } |
| else |
| { |
| return 0; |
| } |
| } |
| |
| uint16 VisualSampleEntry::getWidth() const |
| { |
| uint32 width = _reserved2 & 0xFFFF0000; |
| uint32 ret = width >> 16; |
| return (uint16)ret; |
| |
| } |
| |