cra2ihxaprop.cpp
上传用户:zhongxx05
上传日期:2007-06-06
资源大小:33641k
文件大小:8k
- /* ***** 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 "hxcom.h"
- #include "hxtypes.h"
- #include "hxresult.h"
- #include "hlxclib/string.h"
- #include "racodec.h"
- #include "gcd.h"
- #include "cra2ihxaenc.h"
- /* heap, memory debugging */
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- static ULONG32 getULONG32Prop(RACODEC codecRef,UINT16 flvIndex, UINT16 propIndex)
- {
- UINT16 pSize ;
- ULONG32 *x = (ULONG32*)ENTRYPOINT(RAGetFlavorProperty)(codecRef, flvIndex, propIndex, &pSize) ;
- if (!x || !pSize)
- return -1 ; // should really fault. XXX TODO wschildbach
- else
- return *x ;
- }
- HX_RESULT HXAudioEncoder::retrieveProperties(void)
- {
- int i, n = GetNumberOfFlavors() ;
- mpPropTable = new struct tag_propTable[n] ;
- for (i = 0 ; i < n ; i++)
- {
- int t ;
- mpPropTable[i].bytesPerEncode = getULONG32Prop(mpCodecRef, i, ::FLV_PROP_GRANULARITY) ;
- if (mpPropTable[i].bytesPerEncode == -1)
- return HXR_NOTIMPL ; // we absolutely need this number.
- // tried to outsmart the broken sipro codec here, but to no avail.
- #if 1
- t = mpPropTable[i].bytesPerEncode ;
- #else
- t = getULONG32Prop(mpCodecRef, i, ::FLV_PROP_BITS_PER_FRAME) ;
- if (t == -1)
- {
- // FLV_PROP_BITS_PER_FRAME does not exist -> try FLV_PROP_FRAME_SIZE
- t = getULONG32Prop(mpCodecRef, i, ::FLV_PROP_FRAME_SIZE) ;
- }
- else if (t & 0x7)
- {
- // number of bits per frame is not a whole number. In that case, just go with the codec's
- // idea of how to bundle frames.
- t = mpPropTable[i].bytesPerEncode ;
- }
- else
- {
- t = t / 8 ;
- }
- if (t == -1) // ouch. Could not determine how many bytes per encode.
- return HXR_NOTIMPL ;
- #endif
- mpPropTable[i].bytesPerFrame = t ;
- mpPropTable[i].framesPerBlock = mpPropTable[i].bytesPerEncode / mpPropTable[i].bytesPerFrame ;
- mpPropTable[i].samplesPerFrame = getULONG32Prop(mpCodecRef, i, ::FLV_PROP_SAMPLES_IN) ;
- if (mpPropTable[i].samplesPerFrame == -1)
- return HXR_NOTIMPL ; // we absolutely need this number
- mpPropTable[i].samplesPerFrame /= mpPropTable[i].framesPerBlock ;
- }
- return HXR_OK ;
- }
- STDMETHODIMP_(UINT32) HXAudioEncoder::GetNumberOfFlavors() CONSTMETHOD
- {
- return ENTRYPOINT(RAGetNumberOfFlavors2)(mpCodecRef) ;
- }
- STDMETHODIMP HXAudioEncoder::SetFlavor(INT32 nFlavor)
- {
- return ENTRYPOINT(RASetFlavor)(mpCodecRef, mCurrentFlavorIndex = nFlavor) ;
- }
- STDMETHODIMP HXAudioEncoder::GetFlavorProperty(INT32 flvIndex, PROPERTY_LONG p, INT32& l) CONSTMETHOD
- {
- UINT16 pSize ;
- UINT32* x ;
- int code ;
- if (flvIndex >= (INT32)GetNumberOfFlavors())
- return HXR_INVALID_PARAMETER ;
- if (flvIndex == FLV_CURRENT)
- flvIndex = mCurrentFlavorIndex ;
- code = -1 ;
- switch (p)
- {
- case FLV_PROP_MIN_SAMPLES_IN:
- l = mnSamplesIn ; break ;
- // l = mpPropTable[flvIndex].minSamplesIn ; break ;
- case FLV_PROP_MAX_BYTES_OUT:
- l = mpPropTable[flvIndex].bytesPerFrame ; break ;
- case FLV_PROP_PREDATA:
- l = 0; break ;
- case FLV_PROP_OBSOLETE_BITSPERFRAME:
- if (code < 0) code = ::FLV_PROP_BITS_PER_FRAME ; // no break by intention
- case FLV_PROP_OBSOLETE_GRANULARITY:
- if (code < 0) code = ::FLV_PROP_GRANULARITY ; // no break by intention
- case FLV_PROP_OBSOLETE_INTERLEAVE_FACTOR:
- if (code < 0) code = ::FLV_PROP_INTERLEAVE_FACTOR ; // no break by intention
- x = (UINT32*)ENTRYPOINT(RAGetFlavorProperty)(mpCodecRef, flvIndex, code, &pSize) ;
- if (!x || pSize != sizeof(*x))
- return HXR_NOTIMPL ;
- else
- l = *x ;
- break ;
- default:
- return HXR_NOTIMPL ;
- }
- return HXR_OK ;
- }
- STDMETHODIMP HXAudioEncoder::GetFlavorProperty(INT32 flvIndex, PROPERTY_FLOAT p, float& l) CONSTMETHOD
- {
- HX_RESULT res ;
- struct {long n,d;} x ;
- UINT32 buflen ;
- if (flvIndex >= (INT32)GetNumberOfFlavors())
- return HXR_INVALID_PARAMETER ;
- if (flvIndex == FLV_CURRENT)
- flvIndex = mCurrentFlavorIndex ;
- switch (p)
- {
- case FLV_PROP_BIT_RATE_APPROX:
- res = GetFlavorProperty(flvIndex, FLV_PROP_BITS_PER_SECOND, (void*)&x, buflen = sizeof(x)) ;
- if (FAILED(res))
- return HXR_NOTIMPL ;
- l = (float)((double)x.n / (double)x.d) ;
- break ;
- default:
- return HXR_NOTIMPL;
- }
- return HXR_OK ;
- }
- static void RemoveCommonFactors(long &n, long &d)
- {
- long g = gcd(n,d) ;
- n /= g ;
- d /= g ;
- }
- STDMETHODIMP HXAudioEncoder::GetFlavorProperty(INT32 flvIndex, PROPERTY_VOID p, void *v, UINT32& buflen) CONSTMETHOD
- {
- UINT16 pSize ;
- HX_AUDIO_FORMAT *pFmt ;
- int code ;
- if (flvIndex >= (INT32)GetNumberOfFlavors())
- return HXR_INVALID_PARAMETER ;
- if (flvIndex == FLV_CURRENT)
- flvIndex = mCurrentFlavorIndex ;
- pFmt = (HX_AUDIO_FORMAT *)ENTRYPOINT(RAGetFlavorProperty)(mpCodecRef, flvIndex, ::FLV_PROP_INPUT_AUDIO_FORMAT, &pSize) ;
- if (!pFmt || pSize != sizeof(*pFmt))
- return HXR_NOTIMPL ;
- code = -1 ;
- switch (p)
- {
- case FLV_PROP_BITS_PER_SAMPLE: {
- struct tagX {long n,d;} *x = (struct tagX *)v ;
- /* 8*bytesperframe / samplesPerFrame */
- if (x && buflen >= sizeof(*x))
- {
- x->n = 8*mpPropTable[flvIndex].bytesPerFrame ;
- x->d = mpPropTable[flvIndex].samplesPerFrame ;
- RemoveCommonFactors(x->n, x->d) ;
- }
- buflen = sizeof(*x) ;
- } break ;
- case FLV_PROP_BITS_PER_SECOND: {
- struct tagX {long n,d;} *x = (struct tagX *)v ;
- /* 8*bytesperframe * sampleRate * nChannels /samplesPerFrame */
- if (x && buflen >= sizeof(*x))
- {
- x->n = 8 * mpPropTable[flvIndex].bytesPerFrame ;
- x->d = mpPropTable[flvIndex].samplesPerFrame ;
- RemoveCommonFactors(x->n, x->d) ;
- x->n *= pFmt->SamplesPerSec ;
- RemoveCommonFactors(x->n, x->d) ;
- x->n *= pFmt->Channels ;
- RemoveCommonFactors(x->n, x->d) ;
- }
- buflen = sizeof(*x) ;
- } break ;
- case FLV_PROP_INPUT_AUDIO_FORMAT:
- if (code < 0) code = ::FLV_PROP_INPUT_AUDIO_FORMAT ; // no break by intention
- case FLV_PROP_FLAVOR_NAME:
- if (code < 0) code = ::FLV_PROP_NAME ; // no break by intention
- case FLV_PROP_CODEC_NAME:
- if (code < 0) code = ::FLV_PROP_STATUS_TEXT ; // no break by intention
- case FLV_PROP_FLAVOR_DESCRIPTION:
- if (code < 0) code = ::FLV_PROP_DESCRIPTION ; // no break by intention
- case FLV_PROP_OPAQUE_DATA:
- if (code < 0) code = ::FLV_PROP_OPAQUE_DATA ; // no break by intention
- {
- void *x = ENTRYPOINT(RAGetFlavorProperty)(mpCodecRef, flvIndex, code, &pSize) ;
- if (x && v && pSize <= buflen)
- {
- memcpy(v, x, pSize) ; /* Flawfinder: ignore */
- }
- buflen = pSize;
- } break ;
- default:
- return HXR_NOTIMPL;
- }
- return HXR_OK ;
- }