feat: expose IP-Adapter in server request schema and capabilities (#1824)

examples/common/common.cpp

@@ -1901,6 +1901,7 @@ bool SDGenerationParams::from_json_str(
 
     load_if_exists("strength", strength);
     load_if_exists("control_strength", control_strength);
+    load_if_exists("ip_adapter_strength", ip_adapter_strength);
     load_if_exists("moe_boundary", moe_boundary);
     load_if_exists("vace_strength", vace_strength);
 
@@ -2072,6 +2073,10 @@ bool SDGenerationParams::from_json_str(
         LOG_ERROR("invalid control_image");
         return false;
     }
+    if (!parse_image_json_field(j, "ip_adapter_image", 3, width, height, ip_adapter_image)) {
+        LOG_ERROR("invalid ip_adapter_image");
+        return false;
+    }
 
     return true;
 }
@@ -2807,6 +2812,7 @@ std::string build_sdcpp_image_metadata_json(const SDContextParams& ctx_params,
     root["clip_skip"]             = gen_params.clip_skip;
     root["strength"]              = gen_params.strength;
     root["control_strength"]      = gen_params.control_strength;
+    root["ip_adapter_strength"]   = gen_params.ip_adapter_strength;
     root["auto_resize_ref_image"] = gen_params.auto_resize_ref_image;
     root["increase_ref_index"]    = gen_params.increase_ref_index;
     if (mode == VID_GEN) {

examples/server/api.md

@@ -528,6 +528,7 @@ Shared default fields used by both `img_gen` and `vid_gen`:
 | `auto_resize_ref_image` | `boolean` |
 | `increase_ref_index` | `boolean` |
 | `control_strength` | `number` |
+| `ip_adapter_strength` | `number` |
 | `hires` | `object` |
 | `hires.enabled` | `boolean` |
 | `hires.upscaler` | `string` |
@@ -567,6 +568,7 @@ Fields returned in `features_by_mode.img_gen`:
 - `init_image`
 - `mask_image`
 - `control_image`
+- `ip_adapter_image`
 - `ref_images`
 - `lora`
 - `vae_tiling`
@@ -653,12 +655,14 @@ Example:
   "auto_resize_ref_image": true,
   "increase_ref_index": false,
   "control_strength": 0.9,
+  "ip_adapter_strength": 1.0,
   "embed_image_metadata": true,
 
   "init_image": null,
   "ref_images": [],
   "mask_image": null,
   "control_image": null,
+  "ip_adapter_image": null,
 
   "sample_params": {
     "scheduler": "discrete",
@@ -733,6 +737,7 @@ Channel expectations:
 - `init_image`: 3 channels
 - `ref_images[]`: 3 channels
 - `control_image`: 3 channels
+- `ip_adapter_image`: 3 channels
 - `mask_image`: 1 channel
 
 If omitted or null:
@@ -757,6 +762,7 @@ Top-level scalar fields:
 | `auto_resize_ref_image` | `boolean` |
 | `increase_ref_index` | `boolean` |
 | `control_strength` | `number` |
+| `ip_adapter_strength` | `number` |
 | `embed_image_metadata` | `boolean` |
 
 Image fields:
@@ -767,6 +773,7 @@ Image fields:
 | `ref_images` | `array<string>` |
 | `mask_image` | `string \| null` |
 | `control_image` | `string \| null` |
+| `ip_adapter_image` | `string \| null` |
 
 LoRA fields:
 
@@ -958,7 +965,7 @@ Response fields:
 Compared with `img_gen`, the `vid_gen` request body:
 
 - `vid_gen` is a single video sequence job, so `batch_count` is not part of the request schema
-- `ref_images`, `mask_image`, `control_image`, `control_strength`, and `embed_image_metadata` are not part of the request schema
+- `ref_images`, `mask_image`, `control_image`, `control_strength`, `ip_adapter_image`, `ip_adapter_strength`, and `embed_image_metadata` are not part of the request schema
 - `vid_gen` adds `end_image`, `control_frames`, `high_noise_sample_params`, `video_frames`, `fps`, `moe_boundary`, and `vace_strength`
 
 Example:

examples/server/routes_sdcpp.cpp

@@ -130,6 +130,7 @@ static json make_img_gen_defaults_json(const SDGenerationParams& defaults, const
         {"auto_resize_ref_image", defaults.auto_resize_ref_image},
         {"increase_ref_index", defaults.increase_ref_index},
         {"control_strength", defaults.control_strength},
+        {"ip_adapter_strength", defaults.ip_adapter_strength},
         {"sample_params", make_sample_params_json(defaults.sample_params, defaults.skip_layers)},
         {"hires", make_hires_json(defaults)},
         {"vae_tiling_params", make_vae_tiling_json(defaults.vae_tiling_params)},
@@ -173,6 +174,7 @@ static json make_img_gen_features_json() {
         {"init_image", true},
         {"mask_image", true},
         {"control_image", true},
+        {"ip_adapter_image", true},
         {"ref_images", true},
         {"lora", true},
         {"vae_tiling", true},