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This commit is contained in:
Surma
2021-05-19 15:26:49 +01:00
parent 558ee0e5ba
commit be41088fb8
8 changed files with 28 additions and 18 deletions
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22
codecs/basis/dec/basis_dec.cpp
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@@ -16,26 +16,28 @@ val decode(std::string data) {
basist::etc1_global_selector_codebook sel_codebook = basist::etc1_global_selector_codebook(
basist::g_global_selector_cb_size, basist::g_global_selector_cb);
basist::basisu_transcoder transcoder = basist::basisu_transcoder(&sel_codebook);
basist::ktx2_transcoder transcoder = basist::ktx2_transcoder(&sel_codebook);
const void* dataPtr = reinterpret_cast<const void*>(data.c_str());
auto dataSize = data.size();
basist::basisu_image_info info;
transcoder.get_image_info(dataPtr, dataSize, info, 0 /* image_index */);
transcoder.init(dataPtr, dataSize);
transcoder.start_transcoding(dataPtr, dataSize);
auto buffer = std::vector<uint8_t>(info.m_width * info.m_height * 4);
auto header = transcoder.get_header();
auto image_width = static_cast<uint32_t>(header.m_pixel_width);
auto image_height = static_cast<uint32_t>(header.m_pixel_height);
transcoder.start_transcoding();
auto buffer = std::vector<uint8_t>(image_width * image_height * 4);
auto ok = transcoder.transcode_image_level(
dataPtr, dataSize,
/* image_index */ 0, /* level_index */ 0, buffer.data(), buffer.size() / 4,
basist::transcoder_texture_format::cTFRGBA32, 0 /* decode_flags */,
info.m_width /* output_row_pitch_in_blocks_or_pixels */);
0 /* level_index */, 0 /* layer_index */, 0 /* face_index */, buffer.data(),
buffer.size() / 4, basist::transcoder_texture_format::cTFRGBA32, 0 /* decode_flags */,
image_width /* output_row_pitch_in_blocks_or_pixels */);
if (!ok) {
return val(std::string("Could not decode"));
}
auto img_data_data = Uint8ClampedArray.new_(typed_memory_view(buffer.size(), buffer.data()));
auto imgData = ImageData.new_(img_data_data, info.m_width, info.m_height);
auto imgData = ImageData.new_(img_data_data, image_width, image_height);
return imgData;
}