feat: add Wan2.1-I2V-1.3B(SkyReels) support (#988)

Author: leejet

stable-diffusion.cpp

@@ -456,7 +456,9 @@ class StableDiffusionGGML {
                                                                             "model.high_noise_diffusion_model",
                                                                             version);
                 }
-                if (diffusion_model->get_desc() == "Wan2.1-I2V-14B" || diffusion_model->get_desc() == "Wan2.1-FLF2V-14B") {
+                if (diffusion_model->get_desc() == "Wan2.1-I2V-14B" ||
+                    diffusion_model->get_desc() == "Wan2.1-FLF2V-14B" ||
+                    diffusion_model->get_desc() == "Wan2.1-I2V-1.3B") {
                     clip_vision = std::make_shared<FrozenCLIPVisionEmbedder>(backend,
                                                                              offload_params_to_cpu,
                                                                              tensor_storage_map);
@@ -3399,10 +3401,12 @@ SD_API sd_image_t* generate_video(sd_ctx_t* sd_ctx, const sd_vid_gen_params_t* s
     int64_t ref_image_num           = 0;  // for vace
     if (sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-I2V-14B" ||
         sd_ctx->sd->diffusion_model->get_desc() == "Wan2.2-I2V-14B" ||
+        sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-I2V-1.3B" ||
         sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-FLF2V-14B") {
         LOG_INFO("IMG2VID");
 
         if (sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-I2V-14B" ||
+            sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-I2V-1.3B" ||
             sd_ctx->sd->diffusion_model->get_desc() == "Wan2.1-FLF2V-14B") {
             if (sd_vid_gen_params->init_image.data) {
                 clip_vision_output = sd_ctx->sd->get_clip_vision_output(work_ctx, sd_vid_gen_params->init_image, false, -2);

wan.hpp

@@ -2075,15 +2075,19 @@ namespace WAN {
                     wan_params.text_len  = 512;
                 } else {
                     if (wan_params.vace_layers > 0) {
-                        desc = "Wan2.1-VACE-1.3B";
+                        desc              = "Wan2.1-VACE-1.3B";
+                        wan_params.in_dim = 16;
+                    } else if (wan_params.model_type == "i2v") {
+                        desc              = "Wan2.1-I2V-1.3B";
+                        wan_params.in_dim = 36;
                     } else {
-                        desc = "Wan2.1-T2V-1.3B";
+                        desc              = "Wan2.1-T2V-1.3B";
+                        wan_params.in_dim = 16;
                     }
                     wan_params.dim       = 1536;
                     wan_params.eps       = 1e-06;
                     wan_params.ffn_dim   = 8960;
                     wan_params.freq_dim  = 256;
-                    wan_params.in_dim    = 16;
                     wan_params.num_heads = 12;
                     wan_params.out_dim   = 16;
                     wan_params.text_len  = 512;