attr: update methods that always return 0 -> void

Little is gained from the return type checks, it mostly serves to
clutter the code.

tmc3/AttributeDecoder.cpp

@@ -123,7 +123,7 @@ void AttributeDecoder::buildPredictors(const PCCPointSet3 &pointCloud) {
 
 //----------------------------------------------------------------------------
 
-int AttributeDecoder::decodeHeader(
+void AttributeDecoder::decodeHeader(
   const std::string &attributeName,
   PCCBitstream &bitstream
 ) {
@@ -160,13 +160,11 @@ int AttributeDecoder::decodeHeader(
     PCCReadFromBuffer<uint8_t>(bitstream.buffer, binaryLevelThresholdRaht, bitstream.size);
     PCCReadFromBuffer<uint32_t>(bitstream.buffer, quantizationStepRaht, bitstream.size);
   }
-
-  return 0;
 }
 
 //----------------------------------------------------------------------------
 
-int AttributeDecoder::decodeReflectances(
+void AttributeDecoder::decodeReflectances(
   PCCBitstream &bitstream,
   PCCPointSet3 &pointCloud
 ) {
@@ -188,12 +186,11 @@ int AttributeDecoder::decodeReflectances(
 
   decoder.stop();
   bitstream.size += compressedBitstreamSize;
-  return 0;
 }
 
 //----------------------------------------------------------------------------
 
-int AttributeDecoder::decodeColors(
+void AttributeDecoder::decodeColors(
   PCCBitstream &bitstream,
   PCCPointSet3 &pointCloud
 ) {
@@ -215,7 +212,6 @@ int AttributeDecoder::decodeColors(
 
   decoder.stop();
   bitstream.size += compressedBitstreamSize;
-  return 0;
 }
 
 //----------------------------------------------------------------------------

tmc3/AttributeDecoder.h

@@ -57,18 +57,15 @@ public:
   void buildPredictors(
     const PCCPointSet3 &pointCloud);
 
-  // todo(df): return value is always 0 => should be void?
-  int decodeHeader(
+  void decodeHeader(
     const std::string &attributeName,
     PCCBitstream &bitstream);
 
-  // todo(df): return value is always 0 =>  should be void?
-  int decodeReflectances(
+  void decodeReflectances(
     PCCBitstream &bitstream,
     PCCPointSet3 &pointCloud);
 
-  // todo(df): return value is always 0 => should be void?
-  int decodeColors(
+  void decodeColors(
     PCCBitstream &bitstream,
     PCCPointSet3 &pointCloud);
 

tmc3/AttributeEncoder.cpp

@@ -131,7 +131,7 @@ void AttributeEncoder::buildPredictors(
 
 //----------------------------------------------------------------------------
 
-int AttributeEncoder::encodeHeader(
+void AttributeEncoder::encodeHeader(
   const PCCAttributeEncodeParamaters &attributeParams,
   const std::string &attributeName,
   PCCBitstream &bitstream
@@ -170,13 +170,11 @@ int AttributeEncoder::encodeHeader(
       uint32_t(attributeParams.quantizationStepRaht),
       bitstream.buffer, bitstream.size);
   }
-
-  return 0;
 }
 
 //----------------------------------------------------------------------------
 
-int AttributeEncoder::encodeReflectances(
+void AttributeEncoder::encodeReflectances(
   const PCCAttributeEncodeParamaters &reflectanceParams,
   PCCPointSet3 &pointCloud,
   PCCBitstream &bitstream
@@ -200,12 +198,11 @@ int AttributeEncoder::encodeReflectances(
   uint32_t compressedBitstreamSize = encoder.stop();
   bitstream.size += compressedBitstreamSize;
   PCCWriteToBuffer<uint32_t>(compressedBitstreamSize, bitstream.buffer, startSize);
-  return 0;
 }
 
 //----------------------------------------------------------------------------
 
-int AttributeEncoder::encodeColors(
+void AttributeEncoder::encodeColors(
   const PCCAttributeEncodeParamaters &colorParams,
   PCCPointSet3 &pointCloud,
   PCCBitstream &bitstream
@@ -229,7 +226,6 @@ int AttributeEncoder::encodeColors(
   uint32_t compressedBitstreamSize = encoder.stop();
   bitstream.size += compressedBitstreamSize;
   PCCWriteToBuffer<uint32_t>(compressedBitstreamSize, bitstream.buffer, startSize);
-  return 0;
 }
 
 //----------------------------------------------------------------------------

tmc3/AttributeEncoder.h

@@ -72,20 +72,17 @@ public:
     const PCCAttributeEncodeParamaters &attributeParams,
     const PCCPointSet3 &pointCloud);
 
-  // todo(df): return value is always 0 => should be void?
-  int encodeHeader(
+  void encodeHeader(
     const PCCAttributeEncodeParamaters &attributeParams,
     const std::string &attributeName,
     PCCBitstream &bitstream) const;
 
-  // todo(df): return value is always 0 => should be void?
-  int encodeReflectances(
+  void encodeReflectances(
     const PCCAttributeEncodeParamaters &reflectanceParams,
     PCCPointSet3 &pointCloud,
     PCCBitstream &bitstream);
 
-  // todo(df): return value is always 0 => should be void?
-  int encodeColors(
+  void encodeColors(
     const PCCAttributeEncodeParamaters &colorParams,
     PCCPointSet3 &pointCloud,
     PCCBitstream &bitstream);

tmc3/PCCTMC3Decoder.h

@@ -99,13 +99,11 @@ class PCCTMC3Decoder3 {
 
     if (pointCloud.hasColors()) {
       uint64_t colorsSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("color", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("color", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeColors(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeColors(bitstream, pointCloud);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B" << std::endl;
       std::cout << std::endl;
@@ -113,13 +111,11 @@ class PCCTMC3Decoder3 {
 
     if (pointCloud.hasReflectances()) {
       uint64_t reflectancesSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("reflectance", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("reflectance", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeReflectances(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeReflectances(bitstream, pointCloud);
+
       reflectancesSize = bitstream.size - reflectancesSize;
       std::cout << "reflectances bitstream size " << reflectancesSize << " B" << std::endl;
     }
@@ -141,25 +137,21 @@ class PCCTMC3Decoder3 {
     }
 
     uint64_t positionsSize = bitstream.size;
-    if (int ret = decodePositionsHeader(bitstream, pointCloud)) {
-      return ret;
-    }
-    if (int ret = decodePositions(bitstream, pointCloud)) {
-      return ret;
-    }
+
+    decodePositionsHeader(bitstream, pointCloud);
+    decodePositions(bitstream, pointCloud);
+
     positionsSize = bitstream.size - positionsSize;
     std::cout << "positions bitstream size " << positionsSize << " B" << std::endl;
 
     if (pointCloud.hasColors()) {
       AttributeDecoder attrDecoder;
       uint64_t colorsSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("color", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("color", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeColors(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeColors(bitstream, pointCloud);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B" << std::endl;
       std::cout << std::endl;
@@ -168,13 +160,11 @@ class PCCTMC3Decoder3 {
     if (pointCloud.hasReflectances()) {
       AttributeDecoder attrDecoder;
       uint64_t reflectancesSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("reflectance", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("reflectance", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeReflectances(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeReflectances(bitstream, pointCloud);
+
       reflectancesSize = bitstream.size - reflectancesSize;
       std::cout << "reflectances bitstream size " << reflectancesSize << " B" << std::endl;
     }
@@ -204,10 +194,10 @@ class PCCTMC3Decoder3 {
     size_t level;
     double intToOrigScale;
     PCCPoint3D intToOrigTranslation;
-    if (int ret = decodeTrisoupHeader(bitstream, pointCloud, depth, level, intToOrigScale,
-                                      intToOrigTranslation)) {
-      return ret;
-    }
+
+    decodeTrisoupHeader(
+      bitstream, pointCloud,
+      depth, level, intToOrigScale, intToOrigTranslation);
 
     // Write out TMC1 geometry bitstream from the converged TMC13 bitstream.
     uint32_t binSize = 0;
@@ -247,13 +237,11 @@ class PCCTMC3Decoder3 {
     if (pointCloud.hasColors()) {
       AttributeDecoder attrDecoder;
       uint64_t colorsSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("color", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("color", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeColors(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeColors(bitstream, pointCloud);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B" << std::endl;
       std::cout << std::endl;
@@ -262,13 +250,11 @@ class PCCTMC3Decoder3 {
     if (pointCloud.hasReflectances()) {
       AttributeDecoder attrDecoder;
       uint64_t reflectancesSize = bitstream.size;
-      if (int ret = attrDecoder.decodeHeader("reflectance", bitstream)) {
-        return ret;
-      }
+
+      attrDecoder.decodeHeader("reflectance", bitstream);
       attrDecoder.buildPredictors(pointCloud);
-      if (int ret = attrDecoder.decodeReflectances(bitstream, pointCloud)) {
-        return ret;
-      }
+      attrDecoder.decodeReflectances(bitstream, pointCloud);
+
       reflectancesSize = bitstream.size - reflectancesSize;
       std::cout << "reflectances bitstream size " << reflectancesSize << " B" << std::endl;
     }
@@ -283,7 +269,7 @@ class PCCTMC3Decoder3 {
   }
 
  private:
-  int decodePositionsHeader(PCCBitstream &bitstream, PCCPointSet3 &pointCloud) {
+  void decodePositionsHeader(PCCBitstream &bitstream, PCCPointSet3 &pointCloud) {
     uint32_t pointCount = 0;
     PCCReadFromBuffer<uint32_t>(bitstream.buffer, pointCount, bitstream.size);
     uint8_t hasColors = 0;
@@ -324,10 +310,9 @@ class PCCTMC3Decoder3 {
     if (fabs(positionQuantizationScale) < minPositionQuantizationScale) {
       positionQuantizationScale = 1.0;
     }
-    return 0;
   }
 
-  int decodeTrisoupHeader(PCCBitstream &bitstream, PCCPointSet3 &pointCloud, size_t &depth,
+  void decodeTrisoupHeader(PCCBitstream &bitstream, PCCPointSet3 &pointCloud, size_t &depth,
                           size_t &level, double &intToOrigScale, PCCPoint3D &intToOrigTranslation) {
     uint32_t pointCount = 0;
     PCCReadFromBuffer<uint32_t>(bitstream.buffer, pointCount, bitstream.size);
@@ -362,7 +347,6 @@ class PCCTMC3Decoder3 {
     PCCReadFromBuffer<size_t>(bitstream.buffer, level, bitstream.size);
     PCCReadFromBuffer<double>(bitstream.buffer, intToOrigScale, bitstream.size);
     PCCReadFromBuffer<PCCPoint3D>(bitstream.buffer, intToOrigTranslation, bitstream.size);
-    return 0;
   }
 
   //-------------------------------------------------------------------------
@@ -515,7 +499,7 @@ class PCCTMC3Decoder3 {
 
   //-------------------------------------------------------------------------
 
-  int decodePositions(PCCBitstream &bitstream, PCCPointSet3 &pointCloud) {
+  void decodePositions(PCCBitstream &bitstream, PCCPointSet3 &pointCloud) {
     uint32_t compressedBitstreamSize;
     PCCReadFromBuffer<uint32_t>(bitstream.buffer, compressedBitstreamSize, bitstream.size);
     o3dgc::Arithmetic_Codec arithmeticDecoder;
@@ -668,7 +652,6 @@ class PCCTMC3Decoder3 {
 
     arithmeticDecoder.stop_decoder();
     bitstream.size += compressedBitstreamSize;
-    return 0;
   }
 
   void inverseQuantization(PCCPointSet3 &pointCloud, const bool roundOutputPositions) {

tmc3/PCCTMC3Encoder.h

@@ -139,13 +139,11 @@ class PCCTMC3Encoder3 {
       AttributeEncoder attrEncoder;
       const auto &colorParams = params.attributeEncodeParameters.find("color")->second;
       uint64_t colorsSize = bitstream.size;
-      if (int ret = attrEncoder.encodeHeader(colorParams, "color", bitstream)) {
-        return ret;
-      }
+
+      attrEncoder.encodeHeader(colorParams, "color", bitstream);
       attrEncoder.buildPredictors(colorParams, pointCloud);
-      if (int ret = attrEncoder.encodeColors(colorParams, pointCloud, bitstream)) {
-        return ret;
-      }
+      attrEncoder.encodeColors(colorParams, pointCloud, bitstream);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B ("
                 << (8.0 * colorsSize) / inputPointCloud.getPointCount() << " bpp)" << std::endl;
@@ -155,13 +153,11 @@ class PCCTMC3Encoder3 {
       AttributeEncoder attrEncoder;
       const auto &reflectanceParams = params.attributeEncodeParameters.find("reflectance")->second;
       uint64_t reflectancesSize = bitstream.size;
-      if (int ret = attrEncoder.encodeHeader(reflectanceParams, "reflectance", bitstream)) {
-        return ret;
-      }
+
+      attrEncoder.encodeHeader(reflectanceParams, "reflectance", bitstream);
       attrEncoder.buildPredictors(reflectanceParams, pointCloud);
-      if (int ret = attrEncoder.encodeReflectances(reflectanceParams, pointCloud, bitstream)) {
-        return ret;
-      }
+      attrEncoder.encodeReflectances(reflectanceParams, pointCloud, bitstream);
+
       reflectancesSize = bitstream.size - reflectancesSize;
       std::cout << "reflectances bitstream size " << reflectancesSize << " B ("
                 << (8.0 * reflectancesSize) / inputPointCloud.getPointCount() << " bpp)"
@@ -182,13 +178,11 @@ class PCCTMC3Encoder3 {
     if (int ret = quantization(inputPointCloud, params)) {
       return ret;
     }
+
     uint64_t positionsSize = bitstream.size;
-    if (int ret = encodePositionsHeader(params, bitstream)) {
-      return ret;
-    }
-    if (int ret = encodePositions(params, bitstream)) {
-      return ret;
-    }
+    encodePositionsHeader(params, bitstream);
+    encodePositions(params, bitstream);
+
     positionsSize = bitstream.size - positionsSize;
     std::cout << "positions bitstream size " << positionsSize << " B ("
               << (8.0 * positionsSize) / inputPointCloud.getPointCount() << " bpp)" << std::endl;
@@ -197,13 +191,11 @@ class PCCTMC3Encoder3 {
       AttributeEncoder attrEncoder;
       const auto &colorParams = params.attributeEncodeParameters.find("color")->second;
       uint64_t colorsSize = bitstream.size;
-      if (int ret = attrEncoder.encodeHeader(colorParams, "color", bitstream)) {
-        return ret;
-      }
+
+      attrEncoder.encodeHeader(colorParams, "color", bitstream);
       attrEncoder.buildPredictors(colorParams, pointCloud);
-      if (int ret = attrEncoder.encodeColors(colorParams, pointCloud, bitstream)) {
-        return ret;
-      }
+      attrEncoder.encodeColors(colorParams, pointCloud, bitstream);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B ("
                 << (8.0 * colorsSize) / inputPointCloud.getPointCount() << " bpp)" << std::endl;
@@ -213,13 +205,11 @@ class PCCTMC3Encoder3 {
       AttributeEncoder attrEncoder;
       const auto &reflectanceParams = params.attributeEncodeParameters.find("reflectance")->second;
       uint64_t reflectancesSize = bitstream.size;
-      if (int ret = attrEncoder.encodeHeader(reflectanceParams, "reflectance", bitstream)) {
-        return ret;
-      }
+
+      attrEncoder.encodeHeader(reflectanceParams, "reflectance", bitstream);
       attrEncoder.buildPredictors(reflectanceParams, pointCloud);
-      if (int ret = attrEncoder.encodeReflectances(reflectanceParams, pointCloud, bitstream)) {
-        return ret;
-      }
+      attrEncoder.encodeReflectances(reflectanceParams, pointCloud, bitstream);
+
       reflectancesSize = bitstream.size - reflectancesSize;
       std::cout << "reflectances bitstream size " << reflectancesSize << " B ("
                 << (8.0 * reflectancesSize) / inputPointCloud.getPointCount() << " bpp)"
@@ -296,9 +286,8 @@ class PCCTMC3Encoder3 {
 
     // Encode positions.
     uint64_t positionsSize = bitstream.size;
-    if (int ret = encodeTrisoupHeader(params, bitstream)) {
-      return ret;
-    }
+    encodeTrisoupHeader(params, bitstream);
+
     // Read in TMC1 geometry bitstream and put it into the converged TMC13 bitstream.
     std::ifstream fin("outbin/outbin_0000.bin", std::ios::binary);
     if (!fin.is_open()) {
@@ -324,13 +313,11 @@ class PCCTMC3Encoder3 {
       AttributeEncoder attrEncoder;
       const auto &colorParams = params.attributeEncodeParameters.find("color")->second;
       uint64_t colorsSize = bitstream.size;
+
       attrEncoder.buildPredictors(colorParams, pointCloud);
-      if (int ret = attrEncoder.encodeHeader(colorParams, "color", bitstream)) {
-        return ret;
-      }
-      if (int ret = attrEncoder.encodeColors(colorParams, pointCloud, bitstream)) {
-        return ret;
-      }
+      attrEncoder.encodeHeader(colorParams, "color", bitstream);
+      attrEncoder.encodeColors(colorParams, pointCloud, bitstream);
+
       colorsSize = bitstream.size - colorsSize;
       std::cout << "colors bitstream size " << colorsSize << " B ("