SBR header period

AAC encoder: Connect SBR and PS header repetition rate with AACENC_HEADER_PERIOD
     parameter of the encoder API.

Bug 9428126

Change-Id: Ia1ab965de9eaa2ac229d0c395a337cbd4d20cba1

libAACenc/src/aacenc_lib.cpp

@@ -98,7 +98,7 @@ amm-info@iis.fraunhofer.de
 /* Encoder library info */
 #define AACENCODER_LIB_VL0 3
 #define AACENCODER_LIB_VL1 4
-#define AACENCODER_LIB_VL2 5
+#define AACENCODER_LIB_VL2 6
 #define AACENCODER_LIB_TITLE "AAC Encoder"
 #define AACENCODER_LIB_BUILD_DATE __DATE__
 #define AACENCODER_LIB_BUILD_TIME __TIME__
@@ -122,6 +122,8 @@ amm-info@iis.fraunhofer.de
 
 #define INPUTBUFFER_SIZE (1537+100+2048)
 
+#define DEFAULT_HEADER_PERIOD_REPETITION_RATE  10 /*!< Default header repetition rate used in transport library and for SBR header. */
+
 ////////////////////////////////////////////////////////////////////////////////////
 /**
  * Flags to characterize encoder modules to be supported in present instance.
@@ -335,7 +337,7 @@ void FDKaacEnc_MapConfig(CODER_CONFIG *cc, USER_PARAM *extCfg, HANDLE_AACENC_CON
       case TT_MP4_ADTS:
       case TT_MP4_LOAS:
       case TT_MP4_LATM_MCP1:
-        cc->headerPeriod = 10;
+        cc->headerPeriod = DEFAULT_HEADER_PERIOD_REPETITION_RATE;
         break;
       default:
         cc->headerPeriod = 0;
@@ -876,6 +878,7 @@ static AACENC_ERROR aacEncInit(HANDLE_AACENCODER  hAacEncoder,
                                 &hAacConfig->audioObjectType,
                                 &hAacEncoder->nDelay,
                                  (hAacConfig->audioObjectType == AOT_ER_AAC_ELD) ? 1 : TRANS_FAC,
+                                 (config->userTpHeaderPeriod!=0xFF) ? config->userTpHeaderPeriod : DEFAULT_HEADER_PERIOD_REPETITION_RATE,
                                  initFlag
                                 );
 

libSBRenc/include/sbr_encoder.h

@@ -298,6 +298,9 @@ UINT sbrEncoder_LimitBitRate(UINT bitRate, UINT numChannels, UINT coreSampleRate
  * \param aot              Input: Desired AOT. output AOT to be used after parameter checking.
  * \param delay            Input: core encoder delay. Output: total delay because of SBR.
  * \param transformFactor  The core encoder transform factor (blockswitching).
+ * \param headerPeriod     Repetition rate of the SBR header:
+ *                           - (-1) means intern configuration.
+ *                           - (1-10) corresponds to header repetition rate in frames.
  * \return                 0 on success, and non-zero if failed.
  */
 INT sbrEncoder_Init( HANDLE_SBR_ENCODER hSbrEncoder,
@@ -312,6 +315,7 @@ INT sbrEncoder_Init( HANDLE_SBR_ENCODER hSbrEncoder,
                      AUDIO_OBJECT_TYPE *aot,
                      int *delay,
                      int  transformFactor,
+                     const int headerPeriod,
                      ULONG statesInitFlag
                     );
 

libSBRenc/src/ps_main.cpp

@@ -227,6 +227,8 @@ FDK_PSENC_ERROR PSEnc_Init(
     /* clear bs buffer */
     FDKmemclear(hParametricStereo->psOut, sizeof(hParametricStereo->psOut));
 
+    hParametricStereo->psOut[0].enablePSHeader = 1; /* write ps header in first frame */
+
     /* clear scaling buffer */
     FDKmemclear(hParametricStereo->dynBandScale, sizeof(UCHAR)*PS_MAX_BANDS);
     FDKmemclear(hParametricStereo->maxBandValue, sizeof(FIXP_QMF)*PS_MAX_BANDS);

libSBRenc/src/sbr_encoder.cpp

@@ -103,7 +103,7 @@ amm-info@iis.fraunhofer.de
 
 #define SBRENCODER_LIB_VL0 3
 #define SBRENCODER_LIB_VL1 3
-#define SBRENCODER_LIB_VL2 1
+#define SBRENCODER_LIB_VL2 2
 
 
 
@@ -1462,6 +1462,7 @@ INT FDKsbrEnc_EnvInit (
                        AUDIO_OBJECT_TYPE aot,
                        int       nBitstrDelay,
                        int       nElement,
+                       const int headerPeriod,
                        ULONG     statesInitFlag
                       ,UCHAR    *dynamic_RAM
                       )
@@ -1521,10 +1522,17 @@ INT FDKsbrEnc_EnvInit (
   hSbrElement->sbrBitstreamData.CountSendHeaderData = 0;
   if (params->SendHeaderDataTime > 0 ) {
 
+    if (headerPeriod==-1) {
+
       hSbrElement->sbrBitstreamData.NrSendHeaderData = (INT)(params->SendHeaderDataTime * hSbrElement->sbrConfigData.sampleFreq
                                                / (1000 * hSbrElement->sbrConfigData.frameSize));
       hSbrElement->sbrBitstreamData.NrSendHeaderData = fixMax(hSbrElement->sbrBitstreamData.NrSendHeaderData,1);
     }
+    else {
+      /* assure header period at least once per second */
+      hSbrElement->sbrBitstreamData.NrSendHeaderData = fixMin(fixMax(headerPeriod,1),(hSbrElement->sbrConfigData.sampleFreq/hSbrElement->sbrConfigData.frameSize));
+    }
+  }
   else {
    hSbrElement->sbrBitstreamData.NrSendHeaderData = 0;
   }
@@ -1723,6 +1731,7 @@ INT sbrEncoder_Init(
                      AUDIO_OBJECT_TYPE *aot,
                      int *delay,
                      int  transformFactor,
+                     const int headerPeriod,
                      ULONG  statesInitFlag
                     )
 {
@@ -1962,6 +1971,7 @@ INT sbrEncoder_Init(
                                   *aot,
                                    nBitstrDelay,
                                    el,
+                                   headerPeriod,
                                    statesInitFlag
                                   ,hSbrEncoder->dynamicRam
                                   );