/* -----------------------------------------------------------------------------

The copyright in this software is being made available under the Clear BSD

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other Intellectual Property Rights other than the copyrights concerning 

the Software are granted under this license.

The Clear BSD License

Copyright (c) 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.

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     * Redistributions of source code must retain the above copyright notice,

     this list of conditions and the following disclaimer.

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------------------------------------------------------------------------------------------- */

/**

  \file    vvenc.cpp

  \brief   This file contains the external interface of the vvenc SDK.

*/

#include "vvenc/vvenc.h"

#include "vvenc/vvencCfg.h"

#include "vvenc/version.h"

#include "vvencimpl.h"

VVENC_NAMESPACE_BEGIN

VVENC_DECL vvencYUVBuffer* vvenc_YUVBuffer_alloc()

{

  vvencYUVBuffer* yuvBuffer = (vvencYUVBuffer*)malloc(sizeof(vvencYUVBuffer));

  if( nullptr == yuvBuffer )

  {

    return nullptr;

  }

  vvenc_YUVBuffer_default( yuvBuffer );

  return yuvBuffer;

}

VVENC_DECL void vvenc_YUVBuffer_free(vvencYUVBuffer *yuvBuffer, bool freePicBuffer )

{

  if( yuvBuffer )

  {

    if( freePicBuffer && yuvBuffer->planes[0].ptr )

    {

      vvenc_YUVBuffer_free_buffer ( yuvBuffer );

    }

    free(yuvBuffer);

  }

}

VVENC_DECL void vvenc_YUVBuffer_default(vvencYUVBuffer *yuvBuffer )

{

  if ( nullptr == yuvBuffer )

  {

    return;

  }

  for( int i = 0; i < 3; i ++ )

  {

    yuvBuffer->planes[i].ptr     = NULL;

    yuvBuffer->planes[i].width   = 0;

    yuvBuffer->planes[i].height  = 0;

    yuvBuffer->planes[i].stride  = 0;

  }

  yuvBuffer->sequenceNumber  = 0;

  yuvBuffer->cts             = 0;

  yuvBuffer->ctsValid        = false;

}

VVENC_DECL void vvenc_YUVBuffer_alloc_buffer( vvencYUVBuffer *yuvBuffer, const vvencChromaFormat chFmt, const int frameWidth, const int frameHeight )

{

  if ( nullptr == yuvBuffer )

  {

    return;

  }

  for ( int i = 0; i < 3; i++ )

  {

    vvencYUVPlane&    yuvPlane = yuvBuffer->planes[ i ];

    yuvPlane.width  = vvenc_get_width_of_component ( chFmt, frameWidth,  i );

    yuvPlane.height = vvenc_get_height_of_component( chFmt, frameHeight, i );

    yuvPlane.stride = yuvPlane.width;

    const int size  = yuvPlane.stride * yuvPlane.height;

    yuvPlane.ptr    = ( size > 0 ) ? new int16_t[ size ] : nullptr;

  }

}

VVENC_DECL void vvenc_YUVBuffer_free_buffer( vvencYUVBuffer *yuvBuffer )

{

  if ( nullptr == yuvBuffer )

  {

    return;

  }

  for ( int i = 0; i < 3; i++ )

  {

    delete [] yuvBuffer->planes[ i ].ptr;

    yuvBuffer->planes[ i ].ptr = nullptr;

  }

}

VVENC_DECL vvencAccessUnit* vvenc_accessUnit_alloc()

{

  vvencAccessUnit* accessUnit = (vvencAccessUnit*)malloc(sizeof(vvencAccessUnit));

  if( nullptr == accessUnit )

  {

    return nullptr;

  }

  vvenc_accessUnit_default( accessUnit );

  return accessUnit;

}

VVENC_DECL void vvenc_accessUnit_free(vvencAccessUnit *accessUnit, bool freePayload  )

{

  if( accessUnit )

  {

    if( freePayload && accessUnit->payload )

    {

      vvenc_accessUnit_free_payload ( accessUnit );

    }

    free(accessUnit);

  }

}

VVENC_DECL void vvenc_accessUnit_alloc_payload(vvencAccessUnit *accessUnit, int payload_size )

{

  accessUnit->payload = (unsigned char*)malloc(sizeof(unsigned char) * payload_size );

  if( nullptr == accessUnit->payload )

  {

    return;

  }

  accessUnit->payloadSize = payload_size;

  accessUnit->payloadUsedSize = 0;

}

VVENC_DECL void vvenc_accessUnit_free_payload(vvencAccessUnit *accessUnit )

{

  if( accessUnit->payload )

  {

    free(accessUnit->payload);

    accessUnit->payloadSize = 0;

    accessUnit->payloadUsedSize = 0;

  }

}

VVENC_DECL void vvenc_accessUnit_reset(vvencAccessUnit *accessUnit )

{

  if( nullptr == accessUnit )

  {

    return;

  }

  accessUnit->payloadUsedSize = 0;

  accessUnit->cts             = 0;

  accessUnit->dts             = 0;

  accessUnit->ctsValid        = false;

  accessUnit->dtsValid        = false;

  accessUnit->rap             = false;

  accessUnit->sliceType       = VVENC_NUMBER_OF_SLICE_TYPES;

  accessUnit->refPic          = false;

  accessUnit->temporalLayer   = 0;

  accessUnit->poc             = 0;

  accessUnit->status          = 0;

  accessUnit->essentialBytes  = 0;

#if VVENC_USE_UNSTABLE_API

  accessUnit->userData        = nullptr;

#endif

  memset( accessUnit->infoString, 0, sizeof( accessUnit->infoString ) );

  accessUnit->infoString[0]   ='\0';

}

VVENC_DECL void vvenc_accessUnit_default(vvencAccessUnit *accessUnit )

{

  if( nullptr == accessUnit )

  {

    return;

  }

  accessUnit->payload         = NULL;

  accessUnit->payloadSize     = 0;

  vvenc_accessUnit_reset( accessUnit );

}

VVENC_DECL vvencEncoder* vvenc_encoder_create()

{

  return (vvencEncoder*) new(std::nothrow) vvenc::VVEncImpl();

}

VVENC_DECL int vvenc_encoder_open( vvencEncoder *enc, vvenc_config* config )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_INITIALIZE;

  }

  int ret = e->init( config );

  if (ret != 0)

  {

    // Error initializing the decoder

    return VVENC_ERR_INITIALIZE;

  }

  return VVENC_OK;

}

VVENC_DECL int vvenc_encoder_close(vvencEncoder *enc)

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_INITIALIZE;

  }

  int ret = e->uninit();

  delete e;

  return ret;

}

VVENC_DECL int vvenc_encoder_set_RecYUVBufferCallback(vvencEncoder *enc, void * ctx, vvencRecYUVBufferCallback callback )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_INITIALIZE;

  }

  e->setRecYUVBufferCallback( ctx, callback );

  return VVENC_OK;

}

VVENC_DECL int vvenc_init_pass( vvencEncoder *enc, int pass, const char * statsFName )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_INITIALIZE;

  }

  return e->initPass( pass, statsFName );

}

VVENC_DECL int vvenc_encode( vvencEncoder *enc, vvencYUVBuffer* YUVBuffer, vvencAccessUnit* accessUnit, bool* encodeDone )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_INITIALIZE;

  }

  return e->encode( YUVBuffer, accessUnit, encodeDone );

}

VVENC_DECL int vvenc_get_config( vvencEncoder *enc, vvenc_config* cfg )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->getConfig( *cfg );

}

VVENC_DECL int vvenc_reconfig( vvencEncoder *enc, const vvenc_config *cfg )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->reconfig( *cfg );

}

VVENC_DECL int vvenc_check_config( vvencEncoder *enc, const vvenc_config *cfg )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->checkConfig( *cfg );

}

VVENC_DECL int vvenc_get_headers(vvencEncoder *enc, vvencAccessUnit *accessUnit)

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->getParameterSets( accessUnit );

}

VVENC_DECL const char* vvenc_get_last_error( vvencEncoder *enc )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return NULL;

  }

  return e->getLastError();

}

static std::string VVencDefaultInfo;

VVENC_DECL const char* vvenc_get_enc_information( vvencEncoder *enc )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    VVencDefaultInfo.clear();

    VVencDefaultInfo = vvenc::VVEncImpl::createEncoderInfoStr();

    return VVencDefaultInfo.c_str();

  }

  return e->getEncoderInfo();

}

VVENC_DECL int vvenc_get_num_lead_frames( vvencEncoder *enc )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->getNumLeadFrames();

}

VVENC_DECL int vvenc_get_num_trail_frames( vvencEncoder *enc )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->getNumTrailFrames();

}

VVENC_DECL int vvenc_print_summary( vvencEncoder *enc )

{

  auto e = (vvenc::VVEncImpl*)enc;

  if (!e)

  {

    return VVENC_ERR_UNSPECIFIED;

  }

  return e->printSummary();

}

VVENC_DECL const char* vvenc_get_version()

{

  return VVENC_VERSION;

}

VVENC_DECL const char* vvenc_get_error_msg( int nRet )

{

  return vvenc::VVEncImpl::getErrorMsg( nRet );

}

VVENC_DECL int vvenc_set_logging_callback( void * ctx, vvencLoggingCallback callback )

{

 // DEPRECATED

  vvenc::VVEncImpl::registerMsgCbf ( ctx, callback );

  return VVENC_OK;

}

VVENC_DECL const char* vvenc_set_SIMD_extension( const char* simdId )

{

  return vvenc::VVEncImpl::setSIMDExtension( simdId );

}

///< checks if library has tracing supported enabled (see ENABLE_TRACING).

VVENC_DECL bool vvenc_is_tracing_enabled()

{

#if ENABLE_TRACING

  return true;

#else

  return false;

#endif

}

static std::string VVencCompileInfo;

// creates compile info string containing OS, Compiler and Bit-depth (e.g. 32 or 64 bit).

VVENC_DECL const char* vvenc_get_compile_info_string()

{

  VVencCompileInfo.clear();

  VVencCompileInfo = vvenc::VVEncImpl::getCompileInfoString();

  return VVencCompileInfo.c_str();

}

VVENC_DECL int vvenc_decode_bitstream( const char* FileName, const char* trcFile, const char* trcRule)

{

  return vvenc::VVEncImpl::decodeBitstream( FileName, trcFile, trcRule );

}

VVENC_DECL int vvenc_get_width_of_component( const vvencChromaFormat chFmt, const int frameWidth, const int compId )

{

  int w = frameWidth;

  if ( compId > 0 )

  {

    switch ( chFmt )

    {

      case VVENC_CHROMA_400: w = 0;      break;

      case VVENC_CHROMA_420:

      case VVENC_CHROMA_422: w = w >> 1; break;

      default: break;

    }

  }

  return w;

}

VVENC_DECL int vvenc_get_height_of_component( const vvencChromaFormat chFmt, const int frameHeight, const int compId )

{

  int h = frameHeight;

  if ( compId > 0 )

  {

    switch ( chFmt )

    {

      case VVENC_CHROMA_400: h = 0;      break;

      case VVENC_CHROMA_420: h = h >> 1; break;

      case VVENC_CHROMA_422:

      default: break;

    }

  }

  return h;

}

VVENC_NAMESPACE_END