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- /*
- * MPEG Audio Encoder for DirectShow
- * CEncoder definition
- *
- * Copyright (c) 2000 Marie Orlova, Peter Gubanov, Elecard Ltd.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
- #if !defined(AFX_VITECENCODER_H__40DC8A44_B937_11D2_A381_A2FD7C37FA15__INCLUDED_)
- #define AFX_VITECENCODER_H__40DC8A44_B937_11D2_A381_A2FD7C37FA15__INCLUDED_
-
- #if _MSC_VER >= 1000
- #pragma once
- #endif // _MSC_VER >= 1000
-
- #include "lame.h"
-
- #define INPUT_BUFF_SIZE 65536*2
- #define OUTPUT_BUFF_SIZE 16384
- #define FRAME_SIZE_LAYER3 1152
-
- extern DWORD dwBitRateValue[2][14];
-
-
- typedef struct {
- DWORD dwSampleRate; //SF in Hz
- DWORD dwBitrate; //BR in bit per second
- vbr_mode vmVariable;
- DWORD dwVariableMin; //specify a minimum allowed bitrate
- DWORD dwVariableMax; //specify a maximum allowed bitrate
- DWORD dwQuality; //Encoding quality
- DWORD dwVBRq; // VBR quality setting (0=highest quality, 9=lowest)
- long lLayer; //Layer: 1 or 2
-
- DWORD dwChMode; //Channel coding mode: see doc
- DWORD dwForceMS;
-
- DWORD bCRCProtect; //Is CRC protection activated?
- DWORD bCopyright; //Is the stream protected by copyright?
- DWORD bOriginal; //Is the stream an original?
-
- DWORD dwPES;
-
- DWORD dwEnforceVBRmin;
- DWORD dwVoiceMode;
- DWORD dwKeepAllFreq;
- DWORD dwStrictISO;
- DWORD dwNoShortBlock;
- DWORD dwXingTag;
- DWORD dwModeFixed;
-
- } MPEG_ENCODER_CONFIG;
-
- ////////////////////////////////////////////////////////////////////////////////////////
- // CEncoder is a wraper class for VITEC audio encoder SDK
- ////////////////////////////////////////////////////////////////////////////////////////
- class CEncoder : public CCritSec
- {
- public:
-
- CEncoder();
- virtual ~CEncoder();
-
- // Initialize encoder with PCM stream properties
- HRESULT SetInputType(LPWAVEFORMATEX lpwfex); // returns E_INVALIDARG if not supported
- // GetInputType - returns current input type
- HRESULT GetInputType(WAVEFORMATEX *pwfex)
- {
- if(m_bInpuTypeSet)
- {
- memcpy(pwfex, &m_wfex, sizeof(WAVEFORMATEX));
- return S_OK;
- }
- else
- return E_UNEXPECTED;
- }
-
- // Set MPEG audio parameters
- HRESULT SetOutputType(MPEG_ENCODER_CONFIG &mabsi); // returns E_INVALIDARG if not supported or
- // not compatible with input type
- // Return current MPEG audio settings
- HRESULT GetOutputType(MPEG_ENCODER_CONFIG* pmabsi)
- {
- if(m_bOutpuTypeSet)
- {
- memcpy(pmabsi, &m_mabsi, sizeof(MPEG_ENCODER_CONFIG));
- return S_OK;
- }
- else
- return E_UNEXPECTED;
- }
-
- // Set if output stream is a PES
- void SetPES(bool bPES)
- {
- m_mabsi.dwPES = bPES;
- }
- // Is output stream a PES
- BOOL IsPES()
- {
- return (BOOL)m_mabsi.dwPES;
- }
-
- // Initialize encoder SDK
- HRESULT Init();
- // Close encoder SDK
- HRESULT Close();
-
- // Encode media sample data
- HRESULT Encode(LPVOID pSrc, DWORD dwSrcSize,
- LPVOID pDst, LPDWORD lpdwDstSize, REFERENCE_TIME rt);
- HRESULT Finish(LPVOID pDst, LPDWORD lpdwDstSize);
-
- protected:
-
- HRESULT SetDefaultOutputType(LPWAVEFORMATEX lpwfex); //
-
- // Input meida type
- WAVEFORMATEX m_wfex;
- // Output media type
- MPEG_ENCODER_CONFIG m_mabsi;
-
- // Compressor private data
- lame_global_flags *pgf;
-
- // Compressor miscelaneous state
- BOOL m_bInpuTypeSet;
- BOOL m_bOutpuTypeSet;
-
- // Refrence times of media samples
- REFERENCE_TIME m_rtLast;
- BOOL m_bLast;
-
- // PES headers routine
- int m_nPos;
- int m_nCounter;
- LPBYTE m_pPos;
-
- void Reset();
- void CreatePESHdr(LPBYTE ppHdr, LONGLONG dwPTS, int dwPacketSize);
- void WriteBits(int nBits, int nVal);
- };
-
- #endif // !defined(AFX_VITECENCODER_H__40DC8A44_B937_11D2_A381_A2FD7C37FA15__INCLUDED_)
-