Replace 'runtime_error' exception with 'TORCH_CHECK' in TorchAudio sox (#2592)

Summary:
Pull Request resolved: https://github.com/pytorch/audio/pull/2592

std::runtime_error does not preserve the C++ stack trace, so it is unclear to users what went wrong internally.

PyTorch's TORCH_CHECK macro allows to print C++ stack trace when TORCH_SHOW_CPP_STACKTRACES environment variable is set to 1.

Reviewed By: mthrok

Differential Revision: D38219331

fbshipit-source-id: f51c27111077e927f97127f73f83a31b8e74f61f

torchaudio/csrc/sox/effects.cpp

@@ -20,16 +20,15 @@ void initialize_sox_effects() {
 
   switch (SOX_RESOURCE_STATE) {
     case NotInitialized:
-      if (sox_init() != SOX_SUCCESS) {
-        throw std::runtime_error("Failed to initialize sox effects.");
-      };
+      TORCH_CHECK(
+          sox_init() == SOX_SUCCESS, "Failed to initialize sox effects.");
       SOX_RESOURCE_STATE = Initialized;
       break;
     case Initialized:
       break;
     case ShutDown:
-      throw std::runtime_error(
-          "SoX Effects has been shut down. Cannot initialize again.");
+      TORCH_CHECK(
+          false, "SoX Effects has been shut down. Cannot initialize again.");
   }
 };
 
@@ -38,12 +37,10 @@ void shutdown_sox_effects() {
 
   switch (SOX_RESOURCE_STATE) {
     case NotInitialized:
-      throw std::runtime_error(
-          "SoX Effects is not initialized. Cannot shutdown.");
+      TORCH_CHECK(false, "SoX Effects is not initialized. Cannot shutdown.");
     case Initialized:
-      if (sox_quit() != SOX_SUCCESS) {
-        throw std::runtime_error("Failed to initialize sox effects.");
-      };
+      TORCH_CHECK(
+          sox_quit() == SOX_SUCCESS, "Failed to initialize sox effects.");
       SOX_RESOURCE_STATE = ShutDown;
       break;
     case ShutDown:

torchaudio/csrc/sox/effects_chain.cpp

 #include <torchaudio/csrc/sox/effects_chain.h>
 #include <torchaudio/csrc/sox/utils.h>
+#include "c10/util/Exception.h"
 
 using namespace torch::indexing;
 using namespace torchaudio::sox_utils;
@@ -80,7 +81,7 @@ int tensor_input_drain(sox_effect_t* effp, sox_sample_t* obuf, size_t* osamp) {
       break;
     }
     default:
-      throw std::runtime_error("Unexpected dtype.");
+      TORCH_CHECK(false, "Unexpected dtype: ", chunk.dtype());
   }
   // Write to buffer
   chunk = chunk.contiguous();
@@ -114,12 +115,13 @@ int file_output_flow(
   if (*isamp) {
     auto sf = static_cast<FileOutputPriv*>(effp->priv)->sf;
     if (sox_write(sf, ibuf, *isamp) != *isamp) {
-      if (sf->sox_errno) {
-        std::ostringstream stream;
-        stream << sf->sox_errstr << " " << sox_strerror(sf->sox_errno) << " "
-               << sf->filename;
-        throw std::runtime_error(stream.str());
-      }
+      TORCH_CHECK(
+          !sf->sox_errno,
+          sf->sox_errstr,
+          " ",
+          sox_strerror(sf->sox_errno),
+          " ",
+          sf->filename);
       return SOX_EOF;
     }
   }
@@ -198,9 +200,7 @@ SoxEffectsChain::SoxEffectsChain(
       interm_sig_(),
       out_sig_(),
       sec_(sox_create_effects_chain(&in_enc_, &out_enc_)) {
-  if (!sec_) {
-    throw std::runtime_error("Failed to create effect chain.");
-  }
+  TORCH_CHECK(sec_, "Failed to create effect chain.");
 }
 
 SoxEffectsChain::~SoxEffectsChain() {
@@ -225,20 +225,18 @@ void SoxEffectsChain::addInputTensor(
   priv->waveform = waveform;
   priv->sample_rate = sample_rate;
   priv->channels_first = channels_first;
-  if (sox_add_effect(sec_, e, &interm_sig_, &in_sig_) != SOX_SUCCESS) {
-    throw std::runtime_error(
+  TORCH_CHECK(
+      sox_add_effect(sec_, e, &interm_sig_, &in_sig_) == SOX_SUCCESS,
       "Internal Error: Failed to add effect: input_tensor");
-  }
 }
 
 void SoxEffectsChain::addOutputBuffer(
     std::vector<sox_sample_t>* output_buffer) {
   SoxEffect e(sox_create_effect(get_tensor_output_handler()));
   static_cast<TensorOutputPriv*>(e->priv)->buffer = output_buffer;
-  if (sox_add_effect(sec_, e, &interm_sig_, &in_sig_) != SOX_SUCCESS) {
-    throw std::runtime_error(
+  TORCH_CHECK(
+      sox_add_effect(sec_, e, &interm_sig_, &in_sig_) == SOX_SUCCESS,
       "Internal Error: Failed to add effect: output_tensor");
-  }
 }
 
 void SoxEffectsChain::addInputFile(sox_format_t* sf) {
@@ -247,42 +245,34 @@ void SoxEffectsChain::addInputFile(sox_format_t* sf) {
   SoxEffect e(sox_create_effect(sox_find_effect("input")));
   char* opts[] = {(char*)sf};
   sox_effect_options(e, 1, opts);
-  if (sox_add_effect(sec_, e, &interm_sig_, &in_sig_) != SOX_SUCCESS) {
-    std::ostringstream stream;
-    stream << "Internal Error: Failed to add effect: input " << sf->filename;
-    throw std::runtime_error(stream.str());
-  }
+  TORCH_CHECK(
+      sox_add_effect(sec_, e, &interm_sig_, &in_sig_) == SOX_SUCCESS,
+      "Internal Error: Failed to add effect: input ",
+      sf->filename);
 }
 
 void SoxEffectsChain::addOutputFile(sox_format_t* sf) {
   out_sig_ = sf->signal;
   SoxEffect e(sox_create_effect(get_file_output_handler()));
   static_cast<FileOutputPriv*>(e->priv)->sf = sf;
-  if (sox_add_effect(sec_, e, &interm_sig_, &out_sig_) != SOX_SUCCESS) {
-    std::ostringstream stream;
-    stream << "Internal Error: Failed to add effect: output " << sf->filename;
-    throw std::runtime_error(stream.str());
-  }
+  TORCH_CHECK(
+      sox_add_effect(sec_, e, &interm_sig_, &out_sig_) == SOX_SUCCESS,
+      "Internal Error: Failed to add effect: output ",
+      sf->filename);
 }
 
 void SoxEffectsChain::addEffect(const std::vector<std::string> effect) {
   const auto num_args = effect.size();
-  if (num_args == 0) {
-    throw std::runtime_error("Invalid argument: empty effect.");
-  }
+  TORCH_CHECK(num_args != 0, "Invalid argument: empty effect.");
   const auto name = effect[0];
-  if (UNSUPPORTED_EFFECTS.find(name) != UNSUPPORTED_EFFECTS.end()) {
-    std::ostringstream stream;
-    stream << "Unsupported effect: " << name;
-    throw std::runtime_error(stream.str());
-  }
+  TORCH_CHECK(
+      UNSUPPORTED_EFFECTS.find(name) == UNSUPPORTED_EFFECTS.end(),
+      "Unsupported effect: ",
+      name)
 
   auto returned_effect = sox_find_effect(name.c_str());
-  if (!returned_effect) {
-    std::ostringstream stream;
-    stream << "Unsupported effect: " << name;
-    throw std::runtime_error(stream.str());
-  }
+  TORCH_CHECK(returned_effect, "Unsupported effect: ", name)
+
   SoxEffect e(sox_create_effect(returned_effect));
   const auto num_options = num_args - 1;
 
@@ -290,25 +280,16 @@ void SoxEffectsChain::addEffect(const std::vector<std::string> effect) {
   for (size_t i = 1; i < num_args; ++i) {
     opts.push_back((char*)effect[i].c_str());
   }
-  if (sox_effect_options(e, num_options, num_options ? opts.data() : nullptr) !=
-      SOX_SUCCESS) {
-    std::ostringstream stream;
-    stream << "Invalid effect option:";
-    for (const auto& v : effect) {
-      stream << " " << v;
-    }
-    throw std::runtime_error(stream.str());
-  }
-
-  if (sox_add_effect(sec_, e, &interm_sig_, &in_sig_) != SOX_SUCCESS) {
-    std::ostringstream stream;
-    stream << "Internal Error: Failed to add effect: \"" << name;
-    for (size_t i = 1; i < num_args; ++i) {
-      stream << " " << effect[i];
-    }
-    stream << "\"";
-    throw std::runtime_error(stream.str());
-  }
+  TORCH_CHECK(
+      sox_effect_options(e, num_options, num_options ? opts.data() : nullptr) ==
+          SOX_SUCCESS,
+      "Invalid effect option: ",
+      c10::Join(" ", effect))
+  TORCH_CHECK(
+      sox_add_effect(sec_, e, &interm_sig_, &in_sig_) == SOX_SUCCESS,
+      "Internal Error: Failed to add effect: \"",
+      c10::Join(" ", effect),
+      "\"");
 }
 
 int64_t SoxEffectsChain::getOutputNumChannels() {

torchaudio/csrc/sox/io.cpp

@@ -36,15 +36,14 @@ std::vector<std::vector<std::string>> get_effects(
     const c10::optional<int64_t>& frame_offset,
     const c10::optional<int64_t>& num_frames) {
   const auto offset = frame_offset.value_or(0);
-  if (offset < 0) {
-    throw std::runtime_error(
-        "Invalid argument: frame_offset must be non-negative.");
-  }
+  TORCH_CHECK(
+      offset >= 0,
+      "Invalid argument: frame_offset must be non-negative. Found: ",
+      offset);
   const auto frames = num_frames.value_or(-1);
-  if (frames == 0 || frames < -1) {
-    throw std::runtime_error(
+  TORCH_CHECK(
+      frames > 0 || frames == -1,
       "Invalid argument: num_frames must be -1 or greater than 0.");
-  }
 
   std::vector<std::vector<std::string>> effects;
   if (frames != -1) {
@@ -119,10 +118,10 @@ void save_audio_file(
       /*oob=*/nullptr,
       /*overwrite_permitted=*/nullptr));
 
-  if (static_cast<sox_format_t*>(sf) == nullptr) {
-    throw std::runtime_error(
-        "Error saving audio file: failed to open file " + path);
-  }
+  TORCH_CHECK(
+      static_cast<sox_format_t*>(sf) != nullptr,
+      "Error saving audio file: failed to open file ",
+      path);
 
   torchaudio::sox_effects_chain::SoxEffectsChain chain(
       /*input_encoding=*/get_tensor_encodinginfo(tensor.dtype()),

torchaudio/csrc/sox/types.cpp

@@ -24,9 +24,7 @@ Format get_format_from_string(const std::string& format) {
     return Format::HTK;
   if (format == "gsm")
     return Format::GSM;
-  std::ostringstream stream;
-  stream << "Internal Error: unexpected format value: " << format;
-  throw std::runtime_error(stream.str());
+  TORCH_CHECK(false, "Internal Error: unexpected format value: ", format);
 }
 
 std::string to_string(Encoding v) {
@@ -56,7 +54,7 @@ std::string to_string(Encoding v) {
     case Encoding::OPUS:
       return "OPUS";
     default:
-      throw std::runtime_error("Internal Error: unexpected encoding.");
+      TORCH_CHECK(false, "Internal Error: unexpected encoding.");
   }
 }
 
@@ -74,9 +72,7 @@ Encoding get_encoding_from_option(const c10::optional<std::string> encoding) {
     return Encoding::ULAW;
   if (v == "ALAW")
     return Encoding::ALAW;
-  std::ostringstream stream;
-  stream << "Internal Error: unexpected encoding value: " << v;
-  throw std::runtime_error(stream.str());
+  TORCH_CHECK(false, "Internal Error: unexpected encoding value: ", v);
 }
 
 BitDepth get_bit_depth_from_option(const c10::optional<int64_t> bit_depth) {
@@ -95,9 +91,7 @@ BitDepth get_bit_depth_from_option(const c10::optional<int64_t> bit_depth) {
     case 64:
       return BitDepth::B64;
     default: {
-      std::ostringstream s;
-      s << "Internal Error: unexpected bit depth value: " << v;
-      throw std::runtime_error(s.str());
+      TORCH_CHECK(false, "Internal Error: unexpected bit depth value: ", v);
     }
   }
 }

torchaudio/csrc/sox/utils.cpp

@@ -86,23 +86,18 @@ void SoxFormat::close() {
 }
 
 void validate_input_file(const SoxFormat& sf, const std::string& path) {
-  if (static_cast<sox_format_t*>(sf) == nullptr) {
-    throw std::runtime_error(
+  TORCH_CHECK(
+      static_cast<sox_format_t*>(sf) != nullptr,
       "Error loading audio file: failed to open file " + path);
-  }
-  if (sf->encoding.encoding == SOX_ENCODING_UNKNOWN) {
-    throw std::runtime_error("Error loading audio file: unknown encoding.");
-  }
+  TORCH_CHECK(
+      sf->encoding.encoding != SOX_ENCODING_UNKNOWN,
+      "Error loading audio file: unknown encoding.");
 }
 
 void validate_input_tensor(const torch::Tensor tensor) {
-  if (!tensor.device().is_cpu()) {
-    throw std::runtime_error("Input tensor has to be on CPU.");
-  }
+  TORCH_CHECK(tensor.device().is_cpu(), "Input tensor has to be on CPU.");
 
-  if (tensor.ndimension() != 2) {
-    throw std::runtime_error("Input tensor has to be 2D.");
-  }
+  TORCH_CHECK(tensor.ndimension() == 2, "Input tensor has to be 2D.");
 
   switch (tensor.dtype().toScalarType()) {
     case c10::ScalarType::Byte:
@@ -111,7 +106,8 @@ void validate_input_tensor(const torch::Tensor tensor) {
     case c10::ScalarType::Float:
       break;
     default:
-      throw std::runtime_error(
+      TORCH_CHECK(
+          false,
           "Input tensor has to be one of float32, int32, int16 or uint8 type.");
   }
 }
@@ -131,7 +127,8 @@ caffe2::TypeMeta get_dtype(
           case 32:
             return torch::kInt32;
           default:
-            throw std::runtime_error(
+            TORCH_CHECK(
+                false,
                 "Only 16, 24, and 32 bits are supported for signed PCM.");
         }
       default:
@@ -180,7 +177,7 @@ torch::Tensor convert_to_tensor(
       ptr[i] = SOX_SAMPLE_TO_UNSIGNED_8BIT(buffer[i], dummy);
     }
   } else {
-    throw std::runtime_error("Unsupported dtype.");
+    TORCH_CHECK(false, "Unsupported dtype: ", dtype);
   }
   if (channels_first) {
     t = t.transpose(1, 0);
@@ -215,7 +212,7 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
             case c10::ScalarType::Byte:
               return std::make_tuple<>(SOX_ENCODING_UNSIGNED, 8);
             default:
-              throw std::runtime_error("Internal Error: Unexpected dtype.");
+              TORCH_CHECK(false, "Internal Error: Unexpected dtype: ", dtype);
           }
         case BitDepth::B8:
           return std::make_tuple<>(SOX_ENCODING_UNSIGNED, 8);
@@ -228,8 +225,8 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
         case BitDepth::NOT_PROVIDED:
           return std::make_tuple<>(SOX_ENCODING_SIGN2, 32);
         case BitDepth::B8:
-          throw std::runtime_error(
-              format + " does not support 8-bit signed PCM encoding.");
+          TORCH_CHECK(
+              false, format, " does not support 8-bit signed PCM encoding.");
         default:
           return std::make_tuple<>(
               SOX_ENCODING_SIGN2, static_cast<unsigned>(bits_per_sample));
@@ -240,8 +237,8 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
         case BitDepth::B8:
           return std::make_tuple<>(SOX_ENCODING_UNSIGNED, 8);
         default:
-          throw std::runtime_error(
-              format + " only supports 8-bit for unsigned PCM encoding.");
+          TORCH_CHECK(
+              false, format, " only supports 8-bit for unsigned PCM encoding.");
       }
     case Encoding::PCM_FLOAT:
       switch (bits_per_sample) {
@@ -251,8 +248,9 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
         case BitDepth::B64:
           return std::make_tuple<>(SOX_ENCODING_FLOAT, 64);
         default:
-          throw std::runtime_error(
-              format +
+          TORCH_CHECK(
+              false,
+              format,
               " only supports 32-bit or 64-bit for floating-point PCM encoding.");
       }
     case Encoding::ULAW:
@@ -261,8 +259,8 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
         case BitDepth::B8:
           return std::make_tuple<>(SOX_ENCODING_ULAW, 8);
         default:
-          throw std::runtime_error(
-              format + " only supports 8-bit for mu-law encoding.");
+          TORCH_CHECK(
+              false, format, " only supports 8-bit for mu-law encoding.");
       }
     case Encoding::ALAW:
       switch (bits_per_sample) {
@@ -270,12 +268,12 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding_for_wav(
         case BitDepth::B8:
           return std::make_tuple<>(SOX_ENCODING_ALAW, 8);
         default:
-          throw std::runtime_error(
-              format + " only supports 8-bit for a-law encoding.");
+          TORCH_CHECK(
+              false, format, " only supports 8-bit for a-law encoding.");
       }
     default:
-      throw std::runtime_error(
-          format + " does not support encoding: " + to_string(encoding));
+      TORCH_CHECK(
+          false, format, " does not support encoding: " + to_string(encoding));
   }
 }
 
@@ -293,41 +291,46 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding(
     case Format::AMB:
       return get_save_encoding_for_wav(format, dtype, enc, bps);
     case Format::MP3:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("mp3 does not support `encoding` option.");
-      if (bps != BitDepth::NOT_PROVIDED)
-        throw std::runtime_error(
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "mp3 does not support `encoding` option.");
+      TORCH_CHECK(
+          bps == BitDepth::NOT_PROVIDED,
           "mp3 does not support `bits_per_sample` option.");
       return std::make_tuple<>(SOX_ENCODING_MP3, 16);
     case Format::HTK:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("htk does not support `encoding` option.");
-      if (bps != BitDepth::NOT_PROVIDED)
-        throw std::runtime_error(
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "htk does not support `encoding` option.");
+      TORCH_CHECK(
+          bps == BitDepth::NOT_PROVIDED,
           "htk does not support `bits_per_sample` option.");
       return std::make_tuple<>(SOX_ENCODING_SIGN2, 16);
     case Format::VORBIS:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("vorbis does not support `encoding` option.");
-      if (bps != BitDepth::NOT_PROVIDED)
-        throw std::runtime_error(
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "vorbis does not support `encoding` option.");
+      TORCH_CHECK(
+          bps == BitDepth::NOT_PROVIDED,
           "vorbis does not support `bits_per_sample` option.");
       return std::make_tuple<>(SOX_ENCODING_VORBIS, 16);
     case Format::AMR_NB:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("amr-nb does not support `encoding` option.");
-      if (bps != BitDepth::NOT_PROVIDED)
-        throw std::runtime_error(
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "amr-nb does not support `encoding` option.");
+      TORCH_CHECK(
+          bps == BitDepth::NOT_PROVIDED,
           "amr-nb does not support `bits_per_sample` option.");
       return std::make_tuple<>(SOX_ENCODING_AMR_NB, 16);
     case Format::FLAC:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("flac does not support `encoding` option.");
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "flac does not support `encoding` option.");
       switch (bps) {
         case BitDepth::B32:
         case BitDepth::B64:
-          throw std::runtime_error(
-              "flac does not support `bits_per_sample` larger than 24.");
+          TORCH_CHECK(
+              false, "flac does not support `bits_per_sample` larger than 24.");
         default:
           return std::make_tuple<>(
               SOX_ENCODING_FLAC, static_cast<unsigned>(bps));
@@ -344,18 +347,17 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding(
                   SOX_ENCODING_SIGN2, static_cast<unsigned>(bps));
           }
         case Encoding::PCM_UNSIGNED:
-          throw std::runtime_error(
-              "sph does not support unsigned integer PCM.");
+          TORCH_CHECK(false, "sph does not support unsigned integer PCM.");
         case Encoding::PCM_FLOAT:
-          throw std::runtime_error("sph does not support floating point PCM.");
+          TORCH_CHECK(false, "sph does not support floating point PCM.");
         case Encoding::ULAW:
           switch (bps) {
             case BitDepth::NOT_PROVIDED:
             case BitDepth::B8:
               return std::make_tuple<>(SOX_ENCODING_ULAW, 8);
             default:
-              throw std::runtime_error(
-                  "sph only supports 8-bit for mu-law encoding.");
+              TORCH_CHECK(
+                  false, "sph only supports 8-bit for mu-law encoding.");
           }
         case Encoding::ALAW:
           switch (bps) {
@@ -367,19 +369,20 @@ std::tuple<sox_encoding_t, unsigned> get_save_encoding(
                   SOX_ENCODING_ALAW, static_cast<unsigned>(bps));
           }
         default:
-          throw std::runtime_error(
-              "sph does not support encoding: " + encoding.value());
+          TORCH_CHECK(
+              false, "sph does not support encoding: ", encoding.value());
       }
     case Format::GSM:
-      if (enc != Encoding::NOT_PROVIDED)
-        throw std::runtime_error("gsm does not support `encoding` option.");
-      if (bps != BitDepth::NOT_PROVIDED)
-        throw std::runtime_error(
+      TORCH_CHECK(
+          enc == Encoding::NOT_PROVIDED,
+          "gsm does not support `encoding` option.");
+      TORCH_CHECK(
+          bps == BitDepth::NOT_PROVIDED,
           "gsm does not support `bits_per_sample` option.");
       return std::make_tuple<>(SOX_ENCODING_GSM, 16);
 
     default:
-      throw std::runtime_error("Unsupported format: " + format);
+      TORCH_CHECK(false, "Unsupported format: " + format);
   }
 }
 
@@ -401,7 +404,7 @@ unsigned get_precision(const std::string filetype, caffe2::TypeMeta dtype) {
       case c10::ScalarType::Float:
         return 32;
       default:
-        throw std::runtime_error("Unsupported dtype.");
+        TORCH_CHECK(false, "Unsupported dtype: ", dtype);
     }
   }
   if (filetype == "sph")
@@ -415,7 +418,7 @@ unsigned get_precision(const std::string filetype, caffe2::TypeMeta dtype) {
   if (filetype == "htk") {
     return 16;
   }
-  throw std::runtime_error("Unsupported file type: " + filetype);
+  TORCH_CHECK(false, "Unsupported file type: ", filetype);
 }
 
 } // namespace
@@ -445,7 +448,7 @@ sox_encodinginfo_t get_tensor_encodinginfo(caffe2::TypeMeta dtype) {
       case c10::ScalarType::Float:
         return SOX_ENCODING_FLOAT;
       default:
-        throw std::runtime_error("Unsupported dtype.");
+        TORCH_CHECK(false, "Unsupported dtype: ", dtype);
     }
   }();
   unsigned bits_per_sample = [&]() {
@@ -459,7 +462,7 @@ sox_encodinginfo_t get_tensor_encodinginfo(caffe2::TypeMeta dtype) {
       case c10::ScalarType::Float:
         return 32;
       default:
-        throw std::runtime_error("Unsupported dtype.");
+        TORCH_CHECK(false, "Unsupported dtype: ", dtype);
     }
   }();
   return sox_encodinginfo_t{