mpadecobj.cpp
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上传日期:2013-07-19
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "statname.h"
- #include "hlxclib/string.h"
- #include "mpadecl1.h"
- #include "mpadecl2.h"
- #include "mpadecl3.h"
- #include "mpadecobjfltpt.h"
- CMpaDecObj::CMpaDecObj()
- : m_pDec(NULL),
- m_pDecL1(NULL),
- m_pDecL2(NULL),
- m_pDecL3(NULL),
- m_bTrustPackets(0),
- m_bUseFrameSize(0)
- {
- }
- CMpaDecObj::~CMpaDecObj()
- {
- if (m_pDecL1)
- {
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER1)
- delete m_pDecL1;
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER1
- m_pDecL1 = NULL;
- }
- if (m_pDecL2)
- {
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER2)
- delete m_pDecL2;
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER2
- m_pDecL2 = NULL;
- }
- if (m_pDecL3)
- {
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER3)
- delete m_pDecL3;
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER3
- m_pDecL3 = NULL;
- }
- }
- int CMpaDecObj::Init_n(unsigned char *pSync,
- unsigned long ulSize,
- unsigned char bUseSize)
- {
- MPEG_HEAD h;
- memset(&h, 0, sizeof(h));
- int nFrameSize = head_info(pSync, ulSize, &h, m_bTrustPackets);
- if (!nFrameSize)
- return nFrameSize;
- switch (h.option)
- {
- case 3:
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER1)
- m_pDecL1 = new CMpaDecoderL1();
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER1
- m_pDec = m_pDecL1;
- break;
-
- case 2:
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER2)
- m_pDecL2 = new CMpaDecoderL2();
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER2
- m_pDec = m_pDecL2;
- break;
-
- case 1:
- #if defined (HELIX_FEATURE_AUDIO_MPA_LAYER3)
- m_pDecL3 = new CMpaDecoderL3();
- #endif //HELIX_FEATURE_AUDIO_MPA_LAYER3
- m_pDec = m_pDecL3;
- break;
- }
-
- if (!m_pDec)
- return 0;
- m_bUseFrameSize = bUseSize;
- return m_pDec->audio_decode_init(&h, nFrameSize, 0, 0, 0, 24000, (int)m_bUseFrameSize);
- }
- void CMpaDecObj::DecodeFrame_v(unsigned char *pSource,
- unsigned long *pulSize,
- unsigned char *pPCM,
- unsigned long *pulPCMSize)
- {
- IN_OUT io = m_pDec->audio_decode(pSource, pPCM, m_bUseFrameSize ? *pulSize : 0);
- *pulSize = io.in_bytes;
- *pulPCMSize = io.out_bytes;
- }
- void CMpaDecObj::GetPCMInfo_v(unsigned long &ulSampRate,
- int &nChannels,
- int &nBitsPerSample)
- {
- m_pDec->GetPCMInfo_v(ulSampRate, nChannels, nBitsPerSample);
- }
- int CMpaDecObj::GetSamplesPerFrame_n()
- {
- return m_pDec->GetSamplesPerFrame_n();
- }