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qoi_pipe style animation encoding

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Green Sky 2025-05-07 15:43:34 +02:00
parent 12893ac743
commit 3b5874739b
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GPG Key ID: DBE05085D874AB4A
1 changed files with 21 additions and 18 deletions
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19
src/image_loader_qoi.cpp
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@ -137,11 +137,6 @@ std::vector<uint8_t> ImageEncoderQOI::encodeToMemoryRGBA(const ImageResult& inpu
return {};
}
if (input_image.frames.size() > 1) {
std::cerr << "IEQOI warning: image with animation, only first frame will be encoded!\n";
return {};
}
// TODO: look into RDO (eg https://github.com/richgel999/rdopng)
//int png_compression_level = 8;
//if (extra_options.count("png_compression_level")) {
@ -154,21 +149,29 @@ std::vector<uint8_t> ImageEncoderQOI::encodeToMemoryRGBA(const ImageResult& inpu
desc.channels = 4;
desc.colorspace = QOI_SRGB; // TODO: decide
std::vector<uint8_t> new_data;
for (const auto& frame : input_image.frames) {
int out_len {0};
uint8_t* enc_data = static_cast<uint8_t*>(qoi_encode(
input_image.frames.front().data.data(),
frame.data.data(),
&desc,
&out_len
));
if (enc_data == nullptr) {
std::cerr << "IEQOI error: qoi_encode failed!\n";
return {};
break;
}
std::vector<uint8_t> new_data(enc_data, enc_data+out_len);
// qoi_pipe like animation support. simple concatination of images
if (new_data.empty()) {
new_data = std::vector<uint8_t>(enc_data, enc_data+out_len);
} else {
new_data.insert(new_data.cend(), enc_data, enc_data+out_len);
}
free(enc_data); // TODO: a streaming encoder would be better
}
return new_data;
}