Int OmxAacDecoder::AacDecodeFrames(OMX_S16* aOutputBuffer,
OMX_U32* aOutputLength, OMX_U8** aInBuffer,
OMX_U32* aInBufSize, OMX_S32* aIsFirstBuffer,
OMX_AUDIO_PARAM_PCMMODETYPE* aAudioPcmParam,
OMX_AUDIO_PARAM_AACPROFILETYPE* aAudioAacParam,
OMX_U32* aSamplesPerFrame,
OMX_BOOL* aResizeFlag)
{
Int Status;
Int32 StreamType;
*aResizeFlag = OMX_FALSE;
if (0 == iAacInitFlag)
{
//Initialization is required again when the client inbetween rewinds the input bitstream
//Added to pass khronous conformance tests
if (*aIsFirstBuffer != 0)
{
/* When the input file is reset to the begining by the client,
* this module should again be called.
*/
oscl_memset(ipMem, 0, iMemReq);
oscl_memset(&iExt, 0, sizeof(tPVMP4AudioDecoderExternal));
iExt.inputBufferCurrentLength = 0;
iExt.remainderBits = 0;
iExt.inputBufferMaxLength = PVMP4AUDIODECODER_INBUFSIZE;
iExt.outputFormat = OUTPUTFORMAT_16PCM_INTERLEAVED;
iExt.desiredChannels = iNumOfChannels;
iExt.aacPlusEnabled = TRUE;
iInputUsedLength = 0;
PVMP4AudioDecoderInitLibrary(&iExt, ipMem);
}
}
iExt.pInputBuffer = *aInBuffer + iInputUsedLength;
iExt.pOutputBuffer = &aOutputBuffer[0];
#ifdef AAC_PLUS
iExt.pOutputBuffer_plus = &aOutputBuffer[2048];
#endif
iExt.inputBufferCurrentLength = *aInBufSize;
//Decode the config buffer
if (0 == iAacInitFlag)
{
#if PROFILING_ON
OMX_U32 StartTime = OsclTickCount::TickCount();
#endif
Status = PVMP4AudioDecoderConfig(&iExt, ipMem);
#if PROFILING_ON
OMX_U32 EndTime = OsclTickCount::TickCount();
iTotalTicks += (EndTime - StartTime);
#endif
if (MP4AUDEC_SUCCESS == Status)
{
iAacInitFlag = 1;
}
iConfigUpSamplingFactor = iExt.aacPlusUpsamplingFactor;
if (2 == iExt.aacPlusUpsamplingFactor)
{
*aSamplesPerFrame = 2 * AACDEC_PCM_FRAME_SAMPLE_SIZE;
}
else
{
*aSamplesPerFrame = AACDEC_PCM_FRAME_SAMPLE_SIZE;
}
/*
* *aInBufSize -= iExt.inputBufferUsedLength; should render *aInBufSize == 0,
* If the size of the audio config buffer exceeds the size of the audio config data
* the excess bits could be taken as part of next raw aac stream. To avoid that
* we force to consume all bits of the audio config buffer, by making *aInBufSize == 0
*/
*aInBufSize = 0;
iInputUsedLength = 0;
return Status;
}
iExt.inputBufferUsedLength = 0;
#if PROFILING_ON
OMX_U32 StartTime = OsclTickCount::TickCount();
#endif
Status = PVMP4AudioDecodeFrame(&iExt, ipMem);
#if PROFILING_ON
OMX_U32 EndTime = OsclTickCount::TickCount();
iTotalTicks += (EndTime - StartTime);
#endif
if (MP4AUDEC_SUCCESS == Status || SUCCESS == Status)
{
*aInBufSize -= iExt.inputBufferUsedLength;
if (0 == *aInBufSize)
{
iInputUsedLength = 0;
}
else
{
iInputUsedLength += iExt.inputBufferUsedLength;
}
*aOutputLength = iExt.frameLength * iExt.desiredChannels;
#ifdef AAC_PLUS
if (2 == iExt.aacPlusUpsamplingFactor)
{
if (1 == iExt.desiredChannels)
{
oscl_memcpy(&aOutputBuffer[1024], &aOutputBuffer[2048], (*aOutputLength * 2));
}
*aOutputLength *= 2;
}
#endif
(*aIsFirstBuffer)++;
//After decoding the first frame, modify all the input & output port settings
if (1 == *aIsFirstBuffer)
{
StreamType = (Int32) RetrieveDecodedStreamType();
if ((0 == StreamType) && (2 == iConfigUpSamplingFactor))
{
PVMP4AudioDecoderDisableAacPlus(&iExt, &ipMem);
*aSamplesPerFrame = AACDEC_PCM_FRAME_SAMPLE_SIZE;
aAudioAacParam->eAACProfile = OMX_AUDIO_AACObjectMain;
aAudioAacParam->nFrameLength = AACDEC_PCM_FRAME_SAMPLE_SIZE;
}
//Output Port Parameters
aAudioPcmParam->nSamplingRate = iExt.samplingRate;
aAudioPcmParam->nChannels = iExt.desiredChannels;
//Input Port Parameters
aAudioAacParam->nSampleRate = iExt.samplingRate;
//Set the Resize flag to send the port settings changed callback
*aResizeFlag = OMX_TRUE;
}
#if PROFILING_ON
iNumOutputSamples += *aSamplesPerFrame;
#endif
return Status;
}
else if (MP4AUDEC_INCOMPLETE_FRAME == Status)
{
*aInBuffer += iInputUsedLength;
iInputUsedLength = 0;
}
else
{
*aInBufSize = 0;
iInputUsedLength = 0;
}
return Status;
}
static long aacd_opencore_start( AACDInfo *info, unsigned char *buffer, unsigned long buffer_size)
{
AACD_TRACE( "start() buffer=%x size=%d", (*(unsigned long*)buffer), buffer_size );
AACDOpenCore *oc = (AACDOpenCore*) info->ext;
tPVMP4AudioDecoderExternal *pExt = oc->pExt;
pExt->remainderBits = 0;
pExt->frameLength = 0;
// prepare the first samples buffer:
//pExt->pOutputBuffer = malloc(4096 * sizeof(int16_t));
//pExt->pOutputBuffer_plus = pExt->pOutputBuffer + 2048;
pExt->pOutputBuffer = aacd_prepare_samples( info, 4096 );
pExt->pOutputBuffer_plus = pExt->pOutputBuffer + 2048;
int32_t status;
int frameDecoded = 0;
int attempts = 16;
/* pre-init search adts sync */
while (pExt->frameLength == 0 && attempts--) {
pExt->pInputBuffer = buffer;
pExt->inputBufferMaxLength = buffer_size;
pExt->inputBufferCurrentLength = buffer_size;
pExt->inputBufferUsedLength = 0;
status = PVMP4AudioDecoderConfig(pExt, oc->pMem);
AACD_DEBUG( "start() Status[0]: %d", status );
if (status != MP4AUDEC_SUCCESS) {
status = PVMP4AudioDecodeFrame(pExt, oc->pMem);
AACD_DEBUG( "start() Status[1]: %d", status );
buffer -= pExt->inputBufferUsedLength;
buffer_size -= pExt->inputBufferUsedLength;
if (MP4AUDEC_SUCCESS == status) {
AACD_DEBUG( "start() frameLength: %d\n", pExt->frameLength);
frameDecoded = 1;
continue;
}
}
if (buffer_size <= PVMP4AUDIODECODER_INBUFSIZE) break;
}
if (!frameDecoded)
{
AACD_INFO( "start() No stream info available - trying to decode a frame" );
if (buffer_size >= PVMP4AUDIODECODER_INBUFSIZE) status = PVMP4AudioDecodeFrame(pExt, oc->pMem);
else AACD_WARN( "start() Input buffer too small" );
}
//free( pExt->pOutputBuffer );
if (status != MP4AUDEC_SUCCESS)
{
AACD_ERROR( "start() init failed status=%d", status );
return -1;
}
AACD_DEBUG( "start() bytesconsumed=%d", pExt->inputBufferUsedLength );
int streamType = -1;
if ((pExt->extendedAudioObjectType == MP4AUDIO_AAC_LC) ||
(pExt->extendedAudioObjectType == MP4AUDIO_LTP))
{
streamType = AAC;
}
else if (pExt->extendedAudioObjectType == MP4AUDIO_SBR)
{
streamType = AACPLUS;
}
else if (pExt->extendedAudioObjectType == MP4AUDIO_PS)
{
streamType = ENH_AACPLUS;
}
AACD_DEBUG( "start() streamType=%d", streamType );
if ((AAC == streamType) && (2 == pExt->aacPlusUpsamplingFactor))
{
AACD_INFO( "start() DisableAacPlus" );
PVMP4AudioDecoderDisableAacPlus(pExt, oc->pMem);
}
info->samplerate = pExt->samplingRate;
info->channels = pExt->desiredChannels;
oc->frameSamplesFactor = pExt->desiredChannels;
if (2 == pExt->aacPlusUpsamplingFactor) oc->frameSamplesFactor *= 2;
info->frame_bytesconsumed = pExt->inputBufferUsedLength;
info->frame_samples = pExt->frameLength * oc->frameSamplesFactor;
return pExt->inputBufferUsedLength;
}
/*
-----------------------------------------------------------------------------
CDecoder_AAC
DisableSbrDecodingL
Disable aac+/eaac+ decoding.
Parameters: none
Return Values: none
-----------------------------------------------------------------------------
*/
OSCL_EXPORT_REF void CDecoder_AAC::DisableSbrDecodingL(tPVMP4AudioDecoderExternal * pExt)
{
PVMP4AudioDecoderDisableAacPlus(pExt, pMem);
}
