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<link href="/docs/diffusers/main/en/_app/immutable/assets/0.tn0RQdqM.css" rel="modulepreload"> <!--[--><!--[0--><!--[--><!--[0--><!--[--><p></p> <div class="items-center shrink-0 min-w-[100px] max-sm:min-w-[50px] justify-end ml-auto flex" style="float: inline-end; margin-inline-start: 10px; display: inline-flex; position: relative; z-index: 10;"><div dir="ltr" class="inline-flex rounded-md max-sm:rounded-sm"><button class="inline-flex items-center gap-1 h-7 max-sm:h-7 px-2 max-sm:px-1.5 text-sm font-medium text-gray-800 border border-r-0 rounded-l-md max-sm:rounded-l-sm border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-live="polite"><span class="inline-flex items-center justify-center rounded-md p-0.5 max-sm:p-0 hover:text-gray-800 dark:hover:text-gray-200"><svg class="sm:size-3.5 size-3" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----></span> <span dir="auto">Copy page</span></button> <button class="inline-flex items-center justify-center w-6 max-sm:w-5 h-7 max-sm:h-7 disabled:pointer-events-none text-sm text-gray-500 hover:text-gray-700 dark:hover:text-white rounded-r-md max-sm:rounded-r-sm border border-l transition border-gray-200 bg-white hover:shadow-inner dark:border-gray-850 dark:bg-gray-950 dark:text-gray-200 dark:hover:bg-gray-800" aria-haspopup="menu" aria-expanded="false" aria-label="Open copy menu"><svg class="transition-transform text-gray-400 overflow-visible sm:size-3.5 size-3 rotate-0" width="1em" height="1em" viewBox="0 0 12 7" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M1 1L6 6L11 1" stroke="currentColor"></path></svg><!----></button></div> <!--[-1--><!--]--></div><!----> <!--[0--><h1 class="relative group"><a id="autopipelineblocks" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#autopipelineblocks"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->AutoPipelineBlocks<!----></span></h1><!--]--><!----> <p><a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 是一种多块类型，包含支持不同工作流的块。它会根据运行时提供的输入自动选择要运行的子块。这通常用于将多个工作流（如文生图、图生图、局部重绘）打包到单个流水线中，以方便使用。</p> <p>本指南展示了如何创建 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a>。</p> <p>创建三个 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ModularPipelineBlocks">ModularPipelineBlocks</a>，分别用于文本生成图像、图像生成图像和图像修复。这些代表了流水线中可用的不同工作流。</p> <div class="flex space-x-2 items-center my-1.5 mr-8 h-7 !pl-0 -mx-3 md:mx-0"><!--[--><div class="flex items-center border rounded-lg px-1.5 py-1 leading-none select-none text-smd border-gray-800 bg-black dark:bg-gray-700 text-white">文本到图像</div><div class="flex items-center border rounded-lg px-1.5 py-1 leading-none select-none text-smd text-gray-500 cursor-pointer opacity-90 hover:text-gray-700 dark:hover:text-gray-200 hover:shadow-sm">图像到图像</div><div class="flex items-center border rounded-lg px-1.5 py-1 leading-none select-none text-smd text-gray-500 cursor-pointer opacity-90 hover:text-gray-700 dark:hover:text-gray-200 hover:shadow-sm">inpaint</div><!--]--></div> <div class="language-select"><div><div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">import</span> torch
<span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> ModularPipelineBlocks, InputParam, OutputParam
<span class="hljs-keyword">class</span> <span class="hljs-title class_">TextToImageBlock</span>(<span class="hljs-title class_ inherited__">ModularPipelineBlocks</span>):
model_name = <span class="hljs-string">&quot;text2img&quot;</span>
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">inputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> [InputParam(name=<span class="hljs-string">&quot;prompt&quot;</span>)]
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">intermediate_outputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> []
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> <span class="hljs-string">&quot;I&#x27;m a text-to-image workflow!&quot;</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">__call__</span>(<span class="hljs-params">self, components, state</span>):
block_state = <span class="hljs-variable language_">self</span>.get_block_state(state)
<span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;running the text-to-image workflow&quot;</span>)
<span class="hljs-comment"># Add your text-to-image logic here</span>
<span class="hljs-comment"># For example: generate image from prompt</span>
<span class="hljs-variable language_">self</span>.set_block_state(state, block_state)
<span class="hljs-keyword">return</span> components, state<!----></pre></div><!----></div><!----> <div hidden=""><div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">class</span> <span class="hljs-title class_">ImageToImageBlock</span>(<span class="hljs-title class_ inherited__">ModularPipelineBlocks</span>):
model_name = <span class="hljs-string">&quot;img2img&quot;</span>
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">inputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> [InputParam(name=<span class="hljs-string">&quot;prompt&quot;</span>), InputParam(name=<span class="hljs-string">&quot;image&quot;</span>)]
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">intermediate_outputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> []
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> <span class="hljs-string">&quot;I&#x27;m an image-to-image workflow!&quot;</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">__call__</span>(<span class="hljs-params">self, components, state</span>):
block_state = <span class="hljs-variable language_">self</span>.get_block_state(state)
<span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;running the image-to-image workflow&quot;</span>)
<span class="hljs-comment"># Add your image-to-image logic here</span>
<span class="hljs-comment"># For example: transform input image based on prompt</span>
<span class="hljs-variable language_">self</span>.set_block_state(state, block_state)
<span class="hljs-keyword">return</span> components, state<!----></pre></div><!----></div><!----> <div hidden=""><div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">class</span> <span class="hljs-title class_">InpaintBlock</span>(<span class="hljs-title class_ inherited__">ModularPipelineBlocks</span>):
model_name = <span class="hljs-string">&quot;inpaint&quot;</span>
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">inputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> [InputParam(name=<span class="hljs-string">&quot;prompt&quot;</span>), InputParam(name=<span class="hljs-string">&quot;image&quot;</span>), InputParam(name=<span class="hljs-string">&quot;mask&quot;</span>)]
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">intermediate_outputs</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> []
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> <span class="hljs-string">&quot;I&#x27;m an inpaint workflow!&quot;</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">__call__</span>(<span class="hljs-params">self, components, state</span>):
block_state = <span class="hljs-variable language_">self</span>.get_block_state(state)
<span class="hljs-built_in">print</span>(<span class="hljs-string">&quot;running the inpaint workflow&quot;</span>)
<span class="hljs-comment"># Add your inpainting logic here</span>
<span class="hljs-comment"># For example: fill masked areas based on prompt</span>
<span class="hljs-variable language_">self</span>.set_block_state(state, block_state)
<span class="hljs-keyword">return</span> components, state<!----></pre></div><!----></div><!----><!----></div><!----> <p>创建一个 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 类，其中包含子块类及其对应块名的列表。</p> <p>您还需要包含 <code>block_trigger_inputs</code>，这是一个输入名称列表，用于触发对应的 block。如果在运行时提供了某个触发输入，则会选择该 block 来运行。使用 <code>None</code> 来指定在未检测到任何触发输入时要运行的默认 block。</p> <p>最后，重要的是包含一个 <code>description</code>，清楚地说明哪些输入会触发哪些工作流。这有助于用户了解如何运行特定的工作流。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> AutoPipelineBlocks
<span class="hljs-keyword">class</span> <span class="hljs-title class_">AutoImageBlocks</span>(<span class="hljs-title class_ inherited__">AutoPipelineBlocks</span>):
<span class="hljs-comment"># List of sub-block classes to choose from</span>
block_classes = [InpaintBlock, ImageToImageBlock, TextToImageBlock]
<span class="hljs-comment"># Names for each block in the same order</span>
block_names = [<span class="hljs-string">&quot;inpaint&quot;</span>, <span class="hljs-string">&quot;img2img&quot;</span>, <span class="hljs-string">&quot;text2img&quot;</span>]
<span class="hljs-comment"># Trigger inputs that determine which block to run</span>
<span class="hljs-comment"># - &quot;mask&quot; triggers inpaint workflow</span>
<span class="hljs-comment"># - &quot;image&quot; triggers img2img workflow (but only if mask is not provided)</span>
<span class="hljs-comment"># - if none of above, runs the text2img workflow (default)</span>
block_trigger_inputs = [<span class="hljs-string">&quot;mask&quot;</span>, <span class="hljs-string">&quot;image&quot;</span>, <span class="hljs-literal">None</span>]
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> (
<span class="hljs-string">&quot;Pipeline generates images given different types of conditions!\n&quot;</span>
+ <span class="hljs-string">&quot;This is an auto pipeline block that works for text2img, img2img and inpainting tasks.\n&quot;</span>
+ <span class="hljs-string">&quot; - inpaint workflow is run when `mask` is provided.\n&quot;</span>
+ <span class="hljs-string">&quot; - img2img workflow is run when `image` is provided (but only when `mask` is not provided).\n&quot;</span>
+ <span class="hljs-string">&quot; - text2img workflow is run when neither `image` nor `mask` is provided.\n&quot;</span>
)<!----></pre></div><!----> <p>包含 <code>description</code> 以明确如何运行该 block 以及需要哪些输入，这一点<strong>非常</strong>重要。虽然 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 用起来很方便，但如果缺乏清晰的说明，其条件逻辑可能难以理解。</p> <p>创建一个 <code>AutoImageBlocks</code> 实例。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!---->auto_blocks = AutoImageBlocks()<!----></pre></div><!----> <p>对于更复杂的组合，例如在大型流水线中作为子块使用的嵌套 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 块，请使用 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.SequentialPipelineBlocks.get_execution_blocks">get_execution_blocks()</a> 方法提取根据输入实际执行的块。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!---->auto_blocks.get_execution_blocks(mask=<span class="hljs-literal">True</span>)<!----></pre></div><!----> <!--[1--><h2 class="relative group"><a id="conditionalpipelineblocks" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#conditionalpipelineblocks"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->ConditionalPipelineBlocks<!----></span></h2><!--]--><!----> <p><a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 是 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ConditionalPipelineBlocks">ConditionalPipelineBlocks</a> 的一个特例。<a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 根据是否提供了触发输入来选择块，而 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ConditionalPipelineBlocks">ConditionalPipelineBlocks</a> 则能够基于在 <code>select_block</code> 方法中提供的自定义选择逻辑来选择块。</p> <p>以下是直接使用 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ConditionalPipelineBlocks">ConditionalPipelineBlocks</a> 编写的相同示例：</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> ConditionalPipelineBlocks
<span class="hljs-keyword">class</span> <span class="hljs-title class_">AutoImageBlocks</span>(<span class="hljs-title class_ inherited__">ConditionalPipelineBlocks</span>):
block_classes = [InpaintBlock, ImageToImageBlock, TextToImageBlock]
block_names = [<span class="hljs-string">&quot;inpaint&quot;</span>, <span class="hljs-string">&quot;img2img&quot;</span>, <span class="hljs-string">&quot;text2img&quot;</span>]
block_trigger_inputs = [<span class="hljs-string">&quot;mask&quot;</span>, <span class="hljs-string">&quot;image&quot;</span>]
default_block_name = <span class="hljs-string">&quot;text2img&quot;</span>
<span class="hljs-meta"> @property</span>
<span class="hljs-keyword">def</span> <span class="hljs-title function_">description</span>(<span class="hljs-params">self</span>):
<span class="hljs-keyword">return</span> (
<span class="hljs-string">&quot;Pipeline generates images given different types of conditions!\n&quot;</span>
+ <span class="hljs-string">&quot;This is an auto pipeline block that works for text2img, img2img and inpainting tasks.\n&quot;</span>
+ <span class="hljs-string">&quot; - inpaint workflow is run when `mask` is provided.\n&quot;</span>
+ <span class="hljs-string">&quot; - img2img workflow is run when `image` is provided (but only when `mask` is not provided).\n&quot;</span>
+ <span class="hljs-string">&quot; - text2img workflow is run when neither `image` nor `mask` is provided.\n&quot;</span>
)
<span class="hljs-keyword">def</span> <span class="hljs-title function_">select_block</span>(<span class="hljs-params">self, mask=<span class="hljs-literal">None</span>, image=<span class="hljs-literal">None</span></span>) -&gt; <span class="hljs-built_in">str</span> | <span class="hljs-literal">None</span>:
<span class="hljs-keyword">if</span> mask <span class="hljs-keyword">is</span> <span class="hljs-keyword">not</span> <span class="hljs-literal">None</span>:
<span class="hljs-keyword">return</span> <span class="hljs-string">&quot;inpaint&quot;</span>
<span class="hljs-keyword">if</span> image <span class="hljs-keyword">is</span> <span class="hljs-keyword">not</span> <span class="hljs-literal">None</span>:
<span class="hljs-keyword">return</span> <span class="hljs-string">&quot;img2img&quot;</span>
<span class="hljs-keyword">return</span> <span class="hljs-literal">None</span> <span class="hljs-comment"># falls back to default_block_name (&quot;text2img&quot;)</span><!----></pre></div><!----> <p><code>block_trigger_inputs</code> 中列出的输入会作为关键字参数传递给 <code>select_block()</code>。当 <code>select_block</code> 返回 <code>None</code> 时，将回退到 <code>default_block_name</code>。如果 <code>default_block_name</code> 也是 <code>None</code>，则整个条件块会被跳过——这对于仅在提供了特定输入时才应执行的可选处理步骤非常有用。</p> <!--[1--><h2 class="relative group"><a id="workflows" class="header-link block pr-1.5 text-lg no-hover:hidden with-hover:absolute with-hover:p-1.5 with-hover:opacity-0 with-hover:group-hover:opacity-100 with-hover:right-full" href="#workflows"><span><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 256"><path d="M167.594 88.393a8.001 8.001 0 0 1 0 11.314l-67.882 67.882a8 8 0 1 1-11.314-11.315l67.882-67.881a8.003 8.003 0 0 1 11.314 0zm-28.287 84.86l-28.284 28.284a40 40 0 0 1-56.567-56.567l28.284-28.284a8 8 0 0 0-11.315-11.315l-28.284 28.284a56 56 0 0 0 79.196 79.197l28.285-28.285a8 8 0 1 0-11.315-11.314zM212.852 43.14a56.002 56.002 0 0 0-79.196 0l-28.284 28.284a8 8 0 1 0 11.314 11.314l28.284-28.284a40 40 0 0 1 56.568 56.567l-28.285 28.285a8 8 0 0 0 11.315 11.314l28.284-28.284a56.065 56.065 0 0 0 0-79.196z" fill="currentColor"></path></svg><!----></span></a> <span><!---->工作流程<!----></span></h2><!--]--><!----> <p>包含条件块（<a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.AutoPipelineBlocks">AutoPipelineBlocks</a> 或 <a href="/docs/diffusers/v0.43.0/zh/api/modular_diffusers/pipeline_blocks#diffusers.ConditionalPipelineBlocks">ConditionalPipelineBlocks</a>）的流水线可以支持多种工作流——例如，我们的 SDXL 模块化流水线在单个流水线中支持十余种工作流。但这也意味着，用户可能难以了解支持哪些工作流以及如何运行它们。对于流水线构建者而言，能够仅提取与特定工作流相关的块会非常有用。</p> <p>我们建议定义一个 <code>_workflow_map</code>，为每个工作流指定名称，并明确列出其所需的输入。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!----><span class="hljs-keyword">from</span> diffusers.modular_pipelines <span class="hljs-keyword">import</span> SequentialPipelineBlocks
<span class="hljs-keyword">class</span> <span class="hljs-title class_">MyPipelineBlocks</span>(<span class="hljs-title class_ inherited__">SequentialPipelineBlocks</span>):
block_classes = [TextEncoderBlock, AutoImageBlocks, DecodeBlock]
block_names = [<span class="hljs-string">&quot;text_encoder&quot;</span>, <span class="hljs-string">&quot;auto_image&quot;</span>, <span class="hljs-string">&quot;decode&quot;</span>]
_workflow_map = {
<span class="hljs-string">&quot;text2image&quot;</span>: {<span class="hljs-string">&quot;prompt&quot;</span>: <span class="hljs-literal">True</span>},
<span class="hljs-string">&quot;image2image&quot;</span>: {<span class="hljs-string">&quot;image&quot;</span>: <span class="hljs-literal">True</span>, <span class="hljs-string">&quot;prompt&quot;</span>: <span class="hljs-literal">True</span>},
<span class="hljs-string">&quot;inpaint&quot;</span>: {<span class="hljs-string">&quot;mask&quot;</span>: <span class="hljs-literal">True</span>, <span class="hljs-string">&quot;image&quot;</span>: <span class="hljs-literal">True</span>, <span class="hljs-string">&quot;prompt&quot;</span>: <span class="hljs-literal">True</span>},
}<!----></pre></div><!----> <p>我们所有内置的模块化流水线都带有预定义的工作流。<code>available_workflows</code> 属性列出了所有支持的工作流：</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!---->pipeline_blocks = MyPipelineBlocks()
pipeline_blocks.available_workflows
<span class="hljs-comment"># [&#x27;text2image&#x27;, &#x27;image2image&#x27;, &#x27;inpaint&#x27;]</span><!----></pre></div><!----> <p>使用 <code>get_workflow</code> 获取特定工作流，以检查并调试执行该工作流的特定代码块。</p> <div class="code-block relative "><div class="absolute top-2.5 right-4"><button class="inline-flex items-center relative text-sm focus:text-green-500 cursor-pointer focus:outline-none transition duration-200 ease-in-out opacity-0 mx-0.5 text-gray-600 " title="code excerpt" type="button"><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M28,10V28H10V10H28m0-2H10a2,2,0,0,0-2,2V28a2,2,0,0,0,2,2H28a2,2,0,0,0,2-2V10a2,2,0,0,0-2-2Z" transform="translate(0)"></path><path d="M4,18H2V4A2,2,0,0,1,4,2H18V4H4Z" transform="translate(0)"></path><rect fill="none" width="32" height="32"></rect></svg><!----> <div class=" absolute pointer-events-none transition-opacity bg-black text-white py-1 px-2 leading-tight rounded font-normal shadow left-1/2 top-full transform -translate-x-1/2 translate-y-2 opacity-0 "><div class="absolute bottom-full left-1/2 transform -translate-x-1/2 w-0 h-0 border-black border-4 border-t-0" style="border-left-color: transparent; border-right-color: transparent;"></div> 已复制</div><!----></button><!----></div> <pre class="language-py "><!---->pipeline_blocks.get_workflow(<span class="hljs-string">&quot;inpaint&quot;</span>)<!----></pre></div><!----> <a class="!text-gray-400 !no-underline text-sm flex items-center not-prose mt-4" href="https://github.com/huggingface/diffusers/blob/main/docs/source/en/modular_diffusers/auto_pipeline_blocks.md" target="_blank"><svg class="mr-1" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" fill="currentColor" focusable="false" role="img" width="1em" height="1em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 32 32"><path d="M31,16l-7,7l-1.41-1.41L28.17,16l-5.58-5.59L24,9l7,7z"></path><path d="M1,16l7-7l1.41,1.41L3.83,16l5.58,5.59L8,23l-7-7z"></path><path d="M12.419,25.484L17.639,6.552l1.932,0.518L14.351,26.002z"></path></svg><!----> <span><span class="underline">Update</span> on GitHub</span></a><!----> <p></p><!--]--><!----><!--]--><!--]--><!--]--> <!--[-1--><!--]--><!--]-->
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