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298 lines
9.3 KiB
298 lines
9.3 KiB
/*==========================================================================
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*
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* Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
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*
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* File: wirecs.cpp
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* Content:
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* This module contains the implementation of the WaveInException class
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* the recording format db.
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 07/16/99 rodtoll Created
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* 08/25/99 rodtoll General Cleanup/Modifications to support new
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* compression sub-system.
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* 09/03/99 rodtoll Fixed WaveFormatToString
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* 09/20/99 rodtoll Updated to check for memory allocation failures
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* 10/05/99 rodtoll Added DPF_MODNAMES
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* 03/28/2000 rodtoll Removed code which was no longer used
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* 04/14/2000 rodtoll Fix: Bug #32498 - Updating format list to ensure that 8Khz formats are
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* tried first to reduce compression overhead / quality loss
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*
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***************************************************************************/
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#include "dxvutilspch.h"
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#undef DPF_SUBCOMP
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#define DPF_SUBCOMP DN_SUBCOMP_VOICE
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#define __VOXWARE
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// NUM_RECORD_FORMATS
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//
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// This define determines the number of recording formats which
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// will be present in the recording db. (Since they are currently
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// hard-coded.
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#define NUM_RECORD_FORMATS 16
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#define MODULE_ID WAVEINUTILS
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// g_waveInDBInitialized
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//
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// This flag is used to report when the recording db has been initialized.
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BOOL g_waveInDBInitialized = FALSE;
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// g_pwfRecordFormats
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//
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// This is the actual record format db. It contains a list of the formats
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// that are tried when attempting to find a format which will allow
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// full duplex operation. They are listed in the order in which they
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// should be tried.
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WAVEFORMATEX **g_pwfRecordFormats;
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#undef DPF_MODNAME
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#define DPF_MODNAME "GetRecordFormat"
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// GetRecordFormat
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//
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// This function returns the recording format at the index specified
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// by index in the recording format DB.
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//
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// The recording format db must be initialized before this can be called.
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//
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// Parameters:
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// UINT index -
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// The 0-based index into the recording format db that the user
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// wishes to retrieve.
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//
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// Returns:
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// WAVEFORMATEX * -
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// A pointer to a WAVEFORMATEX structure describing the format
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// at the given index in the recording db. This will be NULL
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// if index >= NUM_RECORD_FORMATS or if the recording db has
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// not been initialized.
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//
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// WARNING:
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// The pointer returned is to the actual entry in the recording db and
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// is owned by it. Therefore the caller should not modify or free
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// the memory returned by the pointer.
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//
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WAVEFORMATEX *GetRecordFormat( UINT index )
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{
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if( !g_waveInDBInitialized )
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return NULL;
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if( index >= NUM_RECORD_FORMATS )
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{
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return NULL;
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}
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else
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{
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return g_pwfRecordFormats[index];
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}
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "GetNumRecordFormats"
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// GetNumRecordFormats
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//
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// This function returns the number of recording formats stored
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// in the recording format db.
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//
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// Parameters:
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// N/A
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//
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// Returns:
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// UINT -
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// The number of formats in the recording format db.
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//
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UINT GetNumRecordFormats()
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{
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if( !g_waveInDBInitialized )
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return 0;
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return NUM_RECORD_FORMATS;
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "InitRecordFormats"
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// InitRecordFormats
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//
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// This function initializes the recording format db with the formats which
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// should be tried when initializing recording. This should be the first
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// function called from the recording format db.
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//
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// Parameters:
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// N/A
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//
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// Returns:
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// N/A
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//
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void InitRecordFormats()
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{
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if( g_waveInDBInitialized )
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return;
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DPFX(DPFPREP, DVF_ENTRYLEVEL, "- WDB: Init End" );
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g_pwfRecordFormats = new WAVEFORMATEX*[NUM_RECORD_FORMATS];
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if( g_pwfRecordFormats == NULL )
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{
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DPFX(DPFPREP, DVF_ERRORLEVEL, "Unable to init recordb, memory alloc failure" );
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return;
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}
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g_pwfRecordFormats[0] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 8000, 16 );
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g_pwfRecordFormats[1] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 8000, 8 );
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g_pwfRecordFormats[2] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 11025, 16 );
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g_pwfRecordFormats[3] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 22050, 16 );
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g_pwfRecordFormats[4] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 44100, 16 );
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g_pwfRecordFormats[5] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 11025, 8 );
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g_pwfRecordFormats[6] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 22050, 8 );
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g_pwfRecordFormats[7] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 44100, 8 );
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g_pwfRecordFormats[8] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 8000, 16 );
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g_pwfRecordFormats[9] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 8000, 8 );
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g_pwfRecordFormats[10] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 11025, 16 );
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g_pwfRecordFormats[11] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 22050, 16 );
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g_pwfRecordFormats[12] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 44100, 16 );
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g_pwfRecordFormats[13] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 11025, 8 );
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g_pwfRecordFormats[14] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 22050, 8 );
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g_pwfRecordFormats[15] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 44100, 8 );
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/*
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g_pwfRecordFormats[0] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 22050, 8 );
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g_pwfRecordFormats[1] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 22050, 8 );
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g_pwfRecordFormats[2] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 22050, 16 );
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g_pwfRecordFormats[3] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 22050, 16 );
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g_pwfRecordFormats[4] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 11025, 8 );
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g_pwfRecordFormats[5] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 11025, 8 );
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g_pwfRecordFormats[6] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 11025, 16 );
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g_pwfRecordFormats[7] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 11025, 16 );
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g_pwfRecordFormats[8] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 44100, 8 );
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g_pwfRecordFormats[9] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 44100, 8 );
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g_pwfRecordFormats[10] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 44100, 16 );
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g_pwfRecordFormats[11] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 44100, 16 );
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g_pwfRecordFormats[12] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 8000, 16 );
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g_pwfRecordFormats[13] = CreateWaveFormat( WAVE_FORMAT_PCM, FALSE, 8000, 8 );
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g_pwfRecordFormats[14] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 8000, 16 );
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g_pwfRecordFormats[15] = CreateWaveFormat( WAVE_FORMAT_PCM, TRUE, 8000, 8 );
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*/
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g_waveInDBInitialized = TRUE;
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DPFX(DPFPREP, DVF_ENTRYLEVEL, "- WDB: Init End" );
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "DeInitRecordFormats"
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// DeInitRecordFormats
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//
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// This function releases the memory associated with the recording
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// format DB.
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//
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// Parameters:
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// N/A
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//
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// Returns:
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// N/A
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//
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void DeInitRecordFormats()
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{
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if( g_waveInDBInitialized )
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{
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DPFX(DPFPREP, DVF_INFOLEVEL, "- WDB: DeInit Begin" );
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for( int index = 0; index < NUM_RECORD_FORMATS; index++ )
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{
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delete g_pwfRecordFormats[index];
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}
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delete [] g_pwfRecordFormats;
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DPFX(DPFPREP, DVF_INFOLEVEL, "- WDB: DeInit End" );
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g_waveInDBInitialized = FALSE;
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}
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}
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#undef DPF_MODNAME
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#define DPF_MODNAME "CreateWaveFormat"
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// CreateWaveFormat
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//
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// This utility function is used to allocate and fill WAVEFORMATEX
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// structures for the various formats used. This function
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// currently supports the following formats:
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//
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// WAVE_FORMAT_ADPCM
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// WAVE_FORMAT_DSPGROUP_TRUESPEECH
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// WAVE_FORMAT_GSM610
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// WAVE_FORMAT_LH_CODEC
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// WAVE_FORMAT_PCM
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//
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// The function will allocate the required memory for the sturcture
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// (including extra bytes) as required by the format and will fill
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// in all the members of the sturcture. The structure which is
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// returned belongs to the caller and must be deallocated by the
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// caller.
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//
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// Parameters:
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// short formatTag -
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// The format tag for the wav format.
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//
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// BOOL stereo -
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// Specify TRUE for stereo, FALSE for mono
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//
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// int hz -
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// Specify the sampling rate of the format. E.g. 22050
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//
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// int bits -
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// Specify the number of bits / sample. E.g. 8 or 16
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//
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// Returns:
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// WAVEFORMATEX * -
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// A pointer to a newly allocated WAVEFORMATEX structure
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// for the specified format, or NULL if format is not supported
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//
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WAVEFORMATEX *CreateWaveFormat( short formatTag, BOOL stereo, int hz, int bits ) {
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switch( formatTag ) {
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case WAVE_FORMAT_PCM:
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{
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WAVEFORMATEX *format = new WAVEFORMATEX;
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if( format == NULL )
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{
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goto EXIT_MEMALLOC_CREATEWAV;
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}
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format->wFormatTag = WAVE_FORMAT_PCM;
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format->nSamplesPerSec = hz;
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format->nChannels = (stereo) ? 2 : 1;
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format->wBitsPerSample = (WORD) bits;
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format->nBlockAlign = (bits * format->nChannels / 8);
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format->nAvgBytesPerSec = format->nSamplesPerSec * format->nBlockAlign;
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format->cbSize = 0;
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return format;
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}
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break;
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default:
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DNASSERT( TRUE );
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}
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EXIT_MEMALLOC_CREATEWAV:
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DPFX(DPFPREP, DVF_ERRORLEVEL, "Unable to alloc buffer for waveformat, or invalid format" );
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return NULL;
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}
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