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Fix: handle steps in /v1/images/generations endpoint #1550

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Fix: handle steps in /v1/images/generations endpoint #1550

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486752c
The /v1/images/generations endpoint was ignoring the steps field in t…
May 22, 2026
21b0cf3
Merge branch 'leejet:master' into fix/server-steps-param
aurorianus May 22, 2026
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4 changes: 4 additions & 0 deletions examples/server/routes_openai.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ static bool build_openai_generation_request(const httplib::Request& req,
std::string size = j.value("size", "");
std::string output_format = j.value("output_format", "png");
int output_compression = j.value("output_compression", 100);
int steps = j.value("steps", -1);
int width = runtime.default_gen_params->width > 0 ? runtime.default_gen_params->width : 512;
int height = runtime.default_gen_params->width > 0 ? runtime.default_gen_params->height : 512;
if (!size.empty()) {
Expand Down Expand Up @@ -62,6 +63,9 @@ static bool build_openai_generation_request(const httplib::Request& req,
request.gen_params.width = width;
request.gen_params.height = height;
request.gen_params.batch_count = n;
if (steps > 0) {
request.gen_params.sample_params.sample_steps = steps;
}

std::string sd_cpp_extra_args_str = extract_and_remove_sd_cpp_extra_args(request.gen_params.prompt);
if (!sd_cpp_extra_args_str.empty() && !request.gen_params.from_json_str(sd_cpp_extra_args_str)) {
Expand Down