GetAacDecoder(), Where is it declared and defined?

[aifer2007]

In fdk-aac/libAACdec/src/aacdecoder.cpp,

LINKSPEC_CPP HANDLE_AACDECODER CAacDecoder_Open(TRANSPORT_TYPE bsFormat)    /*!< bitstream format (adif,adts,loas,...). */
{
  HANDLE_AACDECODER self;

  self = GetAacDecoder();
  if (self == NULL) {
    goto bail;
  }
...
}

GetAacDecoder return NULL all the time. I search in this respo, no file declare or define the function GetAacDecoder().

Where is GetAacDecoder() declared and defined?

[mstorsjo]

It is defined via a macro - see libAACdec/src/aac_ram.cpp:

C_ALLOC_MEM(AacDecoder, AAC_DECODER_INSTANCE, 1)

This expands from a macro in libSYS/include/genericStds.h:

  #define C_ALLOC_MEM(name,type,num) \
    type * Get ## name(int n) { FDK_ASSERT((n) == 0); return ((type*)FDKcalloc(num, sizeof(type))); } \
    void Free ## name(type** p) { if (p != NULL) { FDKfree(*p); *p=NULL; } } \
    UINT GetRequiredMem ## name(void) { return ALGN_SIZE_EXTRES((num) * sizeof(type)); }

[aifer2007]

Thanks.

在 2017年5月22日，下午3:18，Martin Storsjö notifications@github.com 写道：

It is defined via a macro - see libAACdec/src/aac_ram.cpp:

C_ALLOC_MEM(AacDecoder, AAC_DECODER_INSTANCE, 1) This expands from a macro in libSYS/include/genericStds.h:

define C_ALLOC_MEM(name,type,num) \

type * Get ## name(int n) { FDK_ASSERT((n) == 0); return ((type*)FDKcalloc(num, sizeof(type))); } \
void Free ## name(type** p) { if (p != NULL) { FDKfree(*p); *p=NULL; } } \
UINT GetRequiredMem ## name(void) { return ALGN_SIZE_EXTRES((num) * sizeof(type)); }

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