Remove unused C++ decoder creation (#542)

Author: scotts

src/torchcodec/decoders/_core/VideoDecoderOps.cpp

@@ -142,20 +142,6 @@ at::Tensor create_from_tensor(
   return wrapDecoderPointerToTensor(std::move(uniqueDecoder));
 }
 
-at::Tensor create_from_buffer(
-    const void* buffer,
-    size_t length,
-    std::optional<std::string_view> seek_mode) {
-  VideoDecoder::SeekMode realSeek = VideoDecoder::SeekMode::exact;
-  if (seek_mode.has_value()) {
-    realSeek = seekModeFromString(seek_mode.value());
-  }
-
-  std::unique_ptr<VideoDecoder> uniqueDecoder =
-      std::make_unique<VideoDecoder>(buffer, length, realSeek);
-  return wrapDecoderPointerToTensor(std::move(uniqueDecoder));
-}
-
 void add_video_stream(
     at::Tensor& decoder,
     std::optional<int64_t> width,

src/torchcodec/decoders/_core/VideoDecoderOps.h

@@ -28,13 +28,6 @@ at::Tensor create_from_tensor(
     at::Tensor video_tensor,
     std::optional<std::string_view> seek_mode = std::nullopt);
 
-// This API is C++ only and will not be exposed via custom ops, use
-// videodecoder_create_from_bytes in Python
-at::Tensor create_from_buffer(
-    const void* buffer,
-    size_t length,
-    std::optional<std::string_view> seek_mode = std::nullopt);
-
 // Add a new video stream at `stream_index` using the provided options.
 void add_video_stream(
     at::Tensor& decoder,

test/decoders/CMakeLists.txt

@@ -21,28 +21,14 @@ add_executable(
   VideoDecoderTest.cpp
 )
 
-add_executable(
-  VideoDecoderOpsTest
-  VideoDecoderOpsTest.cpp
-)
-
 target_include_directories(VideoDecoderTest SYSTEM PRIVATE ${TORCH_INCLUDE_DIRS})
 target_include_directories(VideoDecoderTest PRIVATE ../../)
-target_include_directories(VideoDecoderOpsTest SYSTEM PRIVATE ${TORCH_INCLUDE_DIRS})
-target_include_directories(VideoDecoderOpsTest PRIVATE ../../)
 
 target_link_libraries(
   VideoDecoderTest
   ${libtorchcodec_target_name}
   GTest::gtest_main
 )
 
-target_link_libraries(
-  VideoDecoderOpsTest
-  ${libtorchcodec_target_name}
-  GTest::gtest_main
-)
-
 include(GoogleTest)
 gtest_discover_tests(VideoDecoderTest)
-gtest_discover_tests(VideoDecoderOpsTest)