{"id":2083,"date":"2026-03-03T21:30:21","date_gmt":"2026-03-03T13:30:21","guid":{"rendered":"https:\/\/xujiwei.com\/blog\/?p=2083"},"modified":"2026-03-03T21:32:32","modified_gmt":"2026-03-03T13:32:32","slug":"esp32-jpeg-decoder-test","status":"publish","type":"post","link":"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/","title":{"rendered":"ESP32-S3 + Arduino \u5404\u79cd JPEG \u89e3\u7801\u5e93\u901f\u5ea6\u5bf9\u6bd4\uff0c\u5230\u5e95\u54ea\u4e2a\u624d\u662f\u6700\u5feb\u7684\uff1f"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_65 ez-toc-wrap-right counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<p class=\"ez-toc-title\">\u6587\u7ae0\u76ee\u5f55<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-69dc37159a6bd\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69dc37159a6bd\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E8%B5%B7%E5%9B%A0\" title=\"\u8d77\u56e0\">\u8d77\u56e0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E6%B5%8B%E8%AF%95%E7%8E%AF%E5%A2%83\" title=\"\u6d4b\u8bd5\u73af\u5883\">\u6d4b\u8bd5\u73af\u5883<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E7%A1%AC%E4%BB%B6%E5%B9%B3%E5%8F%B0\" title=\"\u786c\u4ef6\u5e73\u53f0\">\u786c\u4ef6\u5e73\u53f0<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E6%B5%8B%E8%AF%95%E6%A0%B7%E6%9C%AC\" title=\"\u6d4b\u8bd5\u6837\u672c\">\u6d4b\u8bd5\u6837\u672c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E6%B5%8B%E8%AF%95%E8%A7%86%E9%A2%91\" title=\"\u6d4b\u8bd5\u89c6\u9891\">\u6d4b\u8bd5\u89c6\u9891<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E8%A7%A3%E7%A0%81%E5%BA%93%E4%BB%8B%E7%BB%8D\" title=\"\u89e3\u7801\u5e93\u4ecb\u7ecd\">\u89e3\u7801\u5e93\u4ecb\u7ecd<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#JPEGDEC\" title=\"JPEGDEC\">JPEGDEC<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#TJpg_Decoder\" title=\"TJpg_Decoder\">TJpg_Decoder<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#ESP32_NEW_JPEG\" title=\"ESP32_NEW_JPEG\">ESP32_NEW_JPEG<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#JPEG_%E8%A7%A3%E7%A0%81%E6%80%A7%E8%83%BD%E6%B5%8B%E8%AF%95\" title=\"JPEG \u89e3\u7801\u6027\u80fd\u6d4b\u8bd5\">JPEG \u89e3\u7801\u6027\u80fd\u6d4b\u8bd5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E6%B5%8B%E8%AF%95%E4%BB%A3%E7%A0%81\" title=\"\u6d4b\u8bd5\u4ee3\u7801\">\u6d4b\u8bd5\u4ee3\u7801<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E6%B5%8B%E8%AF%95%E7%BB%93%E6%9E%9C\" title=\"\u6d4b\u8bd5\u7ed3\u679c\">\u6d4b\u8bd5\u7ed3\u679c<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E5%86%85%E5%AD%98%E5%8D%A0%E7%94%A8%E5%AF%B9%E6%AF%94\" title=\"\u5185\u5b58\u5360\u7528\u5bf9\u6bd4\">\u5185\u5b58\u5360\u7528\u5bf9\u6bd4<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E5%B0%8F%E7%BB%93\" title=\"\u5c0f\u7ed3\">\u5c0f\u7ed3<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\" title=\"\u53c2\u8003\u8d44\u6599\">\u53c2\u8003\u8d44\u6599<\/a><\/li><\/ul><\/nav><\/div>\n<p>\u524d\u6bb5\u65f6\u95f4\u505a\u4e86\u4e2a ESP32-S3 \u4e32\u6d41\u5c0f\u7535\u89c6\uff08\u89c1 <a href=\"https:\/\/mp.weixin.qq.com\/s\/v-3UYNmZbrDF3_yrVfuJLg\">\u684c\u9762\u5c0f\u7535\u89c6\u65b0\u601d\u8def\uff0cESP32-S3 + 12864 OLED \u4e32\u6d41\u89c6\u9891<\/a>\uff09\u7684\u9879\u76ee\uff0c\u6700\u8fd1\u51c6\u5907\u8bd5\u8bd5\u663e\u793a\u5f69\u8272\u56fe\u7247\uff0c\u8fd9\u5c31\u9700\u8981\u6301\u7eed\u663e\u793a JPEG \u56fe\u7247\u6765\u6a21\u62df\u89c6\u9891\u64ad\u653e\u3002<\/p>\n<p>\u5728 Arduino \u751f\u6001\u4e2d\u627e\u5230\u4e86\u597d\u51e0\u4e2a\u89e3\u7801\u5e93\uff0c\u867d\u7136\u4e5f\u6709\u4e00\u4e9b\u5bf9\u6bd4\u6d4b\u8bd5\uff0c\u8fd8\u662f\u60f3\u81ea\u5df1\u5b9e\u6d4b\u4e00\u4e0b\uff0c\u770b\u770b\u5177\u4f53\u7684\u6548\u679c\u600e\u4e48\u6837 \ud83d\ude03\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E8%B5%B7%E5%9B%A0\"><\/span>\u8d77\u56e0<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5728\u4e32\u6d41\u8fdb\u884c\u89c6\u9891\u64ad\u653e\u65f6\uff0c\u9700\u8981\u89c6\u9891\u7684\u6bcf\u4e00\u5e27\u89e3\u7801\u3001\u4e0a\u5c4f\uff0c<strong>\u5982\u679c\u9700\u8981\u8fbe\u5230 30 FPS \u7684\u5237\u65b0\u7387\uff0c\u90a3\u4e48\u89e3\u7801 + \u4e0a\u5c4f\u7684\u65f6\u95f4\u8981\u5728 1000 \/ 30 = 33.333 ms \u4ee5\u5185<\/strong>\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u56fe\u7247\u89e3\u7801\u6027\u80fd\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<p>\u53e6\u5916\uff0cESP32-S3 \u6709\u53cc\u6838 + \u66f4\u9ad8\u4e3b\u9891 + PSRAM + <strong>SIMD \u6307\u4ee4\u652f\u6301<\/strong>\uff0c\u7406\u8bba\u4e0a\u5e94\u8be5\u53ef\u4ee5\u8dd1\u5f97\u66f4\u5feb\uff0c\u4f46\u662f\u5177\u4f53\u80fd\u5feb\u591a\u5c11\uff0c\u4e0d\u540c\u5e93\u4e4b\u95f4\u5dee\u8ddd\u591a\u5927\uff0c\u90fd\u9700\u8981\u5b9e\u6d4b\u6570\u636e\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E6%B5%8B%E8%AF%95%E7%8E%AF%E5%A2%83\"><\/span>\u6d4b\u8bd5\u73af\u5883<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E7%A1%AC%E4%BB%B6%E5%B9%B3%E5%8F%B0\"><\/span>\u786c\u4ef6\u5e73\u53f0<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><strong>\u5f00\u53d1\u677f<\/strong>\uff1a ESP32-S3-Zero \u5f00\u53d1\u677f<\/li>\n<li><strong>PSRAM<\/strong>\uff1a 2MB PSRAM<\/li>\n<li><strong>CPU \u9891\u7387<\/strong>\uff1a 240MHz (\u53cc\u6838)<\/li>\n<li><strong>Flash<\/strong>\uff1a 4MB<\/li>\n<li><strong>Arduino \u7248\u672c<\/strong>\uff1a PlatformIO Espressif 32 (55.3.34)<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E6%B5%8B%E8%AF%95%E6%A0%B7%E6%9C%AC\"><\/span>\u6d4b\u8bd5\u6837\u672c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6d4b\u8bd5\u56fe\u7247\u4f7f\u7528\u4e86\u7ecf\u5178\u7684\u8ba1\u7b97\u673a\u56fe\u50cf\u5904\u7406\u6d4b\u8bd5\u56fe\u7247 Lenna\uff08\u89c1 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Lenna\">https:\/\/en.wikipedia.org\/wiki\/Lenna<\/a>\uff09\u3002<\/p>\n<p>\u4e0d\u540c\u5c3a\u5bf8\u4f7f\u7528 ImageMagick \u7f29\u653e\u3001\u88c1\u5207\uff0c\u5e76\u4f7f\u7528 80% \u8d28\u91cf\u5bfc\u51fa\u4e3a JPEG \u56fe\u7247\u3002<\/p>\n<p><img src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2026\/03\/esp32-jpeg-decoder-test-2.jpg\" alt=\"esp32-jpeg-decoder-test-2\" \/><\/p>\n<p><strong>JPEG \u56fe\u7247\u6d4b\u8bd5\u6837\u672c:<\/strong><\/p>\n<ul>\n<li>160x80 \u50cf\u7d20\uff0c\u8d28\u91cf 80\uff0c\u6587\u4ef6\u5927\u5c0f\u7ea6 4KB<\/li>\n<li>240x240 \u50cf\u7d20\uff0c\u8d28\u91cf 80\uff0c\u6587\u4ef6\u5927\u5c0f\u7ea6 12KB<\/li>\n<li>320x240 \u50cf\u7d20\uff0c\u8d28\u91cf 80\uff0c\u6587\u4ef6\u5927\u5c0f\u7ea6 49KB<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"%E6%B5%8B%E8%AF%95%E8%A7%86%E9%A2%91\"><\/span>\u6d4b\u8bd5\u89c6\u9891<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div style=\"width: 620px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-2083-1\" width=\"620\" height=\"349\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2026\/03\/ESP32-S3-JPEG-Decoder-Test.mp4?_=1\" \/><a href=\"https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2026\/03\/ESP32-S3-JPEG-Decoder-Test.mp4\">https:\/\/xujiwei.com\/blog\/wp-content\/uploads\/2026\/03\/ESP32-S3-JPEG-Decoder-Test.mp4<\/a><\/video><\/div>\n<h2><span class=\"ez-toc-section\" id=\"%E8%A7%A3%E7%A0%81%E5%BA%93%E4%BB%8B%E7%BB%8D\"><\/span>\u89e3\u7801\u5e93\u4ecb\u7ecd<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"JPEGDEC\"><\/span>JPEGDEC<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u9879\u76ee\u5730\u5740: <a href=\"https:\/\/github.com\/bitbank2\/JPEGDEC\">https:\/\/github.com\/bitbank2\/JPEGDEC<\/a><\/p>\n<p>bitbank2 \u5927\u4f6c\u7684\u4f5c\u54c1\uff0c\u652f\u6301 JPEG\u3001Progressive JPEG\uff0c\u4ee3\u7801\u7cbe\u7b80\uff0c\u4e13\u95e8\u4e3a\u5d4c\u5165\u5f0f\u4f18\u5316\u3002Arduino Library Manager \u53ef\u4ee5\u76f4\u63a5\u5b89\u88c5\uff0c<strong>\u5e76\u4e14\u65b0\u7248\u672c\u4e5f\u652f\u6301\u4e86 SIMD \u6307\u4ee4\u3002<\/strong><\/p>\n<p>\u7279\u70b9:<\/p>\n<ul>\n<li>\u4ee3\u7801\u4f53\u79ef\u5c0f<\/li>\n<li>\u652f\u6301\u90e8\u5206\u89e3\u7801<\/li>\n<li>\u53ef\u4ee5\u76f4\u63a5\u8f93\u51fa\u5230 LCD<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"TJpg_Decoder\"><\/span>TJpg_Decoder<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u9879\u76ee\u5730\u5740: <a href=\"https:\/\/github.com\/Bodmer\/TJpg_Decoder\">https:\/\/github.com\/Bodmer\/TJpg_Decoder<\/a><\/p>\n<p>\u57fa\u4e8e TinyJPEG \u7684 Arduino \u5c01\u88c5\u5e93\uff0cBodmer \u5927\u4f6c\u7ef4\u62a4\uff0c\u548c TFT_eSPI \u914d\u5408\u4f7f\u7528\u975e\u5e38\u65b9\u4fbf\u3002<\/p>\n<p>\u7279\u70b9:<\/p>\n<ul>\n<li>\u96c6\u6210\u5ea6\u9ad8<\/li>\n<li>\u548c TFT_eSPI \u65e0\u7f1d\u914d\u5408<\/li>\n<li>\u652f\u6301\u7f29\u653e\u8f93\u51fa<\/li>\n<li>\u7eaf\u8f6f\u4ef6\u89e3\u7801<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"ESP32_NEW_JPEG\"><\/span>ESP32_NEW_JPEG<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u9879\u76ee\u5730\u5740: <a href=\"https:\/\/github.com\/espressif\/esp-adf-libs\/tree\/master\/esp_new_jpeg\">https:\/\/github.com\/espressif\/esp-adf-libs\/tree\/master\/esp_new_jpeg<\/a><\/p>\n<p>\u4e50\u946b\u5b98\u65b9\u63d0\u4f9b\u7684 JPEG \u786c\u4ef6\u52a0\u901f\u5e93\uff0c\u7406\u8bba\u4e0a\u4e5f\u662f\u4f7f\u7528 SIMD \u6307\u4ee4\u52a0\u901f\uff0c\u4ec5\u63d0\u4f9b lib \u5e93\u4f7f\u7528\uff0c\u4e0d\u5f00\u653e\u6e90\u4ee3\u7801\u3002<\/p>\n<p>\u7279\u70b9:<\/p>\n<ul>\n<li><strong>\u786c\u4ef6\u52a0\u901f<\/strong><\/li>\n<li>\u7406\u8bba\u6027\u80fd\u6700\u5f3a<\/li>\n<li>\u529f\u8017\u66f4\u4f4e<\/li>\n<\/ul>\n<p>\u4e50\u946b\u5b98\u65b9\u5728 2025 \u5e74 9 \u6708\u624d\u5ba3\u5e03\u8fd9\u4e2a\u5e93\uff0c\u4e5f\u662f\u76f8\u5f53\u65b0\u4e86\uff0c\u6587\u7ae0\u89c1 <a href=\"https:\/\/developer.espressif.com\/blog\/2025\/09\/esp-new-jpeg-introduction\/\">https:\/\/developer.espressif.com\/blog\/2025\/09\/esp-new-jpeg-introduction\/<\/a> \u3002<\/p>\n<p>\u53e6\u5916\u6709\u4e2a\u95ee\u9898\uff0c<strong>ESP32_NEW_JPEG \u53ea\u652f\u6301 Baseline JPEG<\/strong>\uff0c\u4e0d\u652f\u6301 Progressive JPEG\uff0c\u5982\u679c\u9047\u5230 Progressive JPEG \u4f1a\u89e3\u7801\u5931\u8d25\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"JPEG_%E8%A7%A3%E7%A0%81%E6%80%A7%E8%83%BD%E6%B5%8B%E8%AF%95\"><\/span>JPEG \u89e3\u7801\u6027\u80fd\u6d4b\u8bd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"%E6%B5%8B%E8%AF%95%E4%BB%A3%E7%A0%81\"><\/span>\u6d4b\u8bd5\u4ee3\u7801<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u6d4b\u8bd5\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u6d4b\u8bd5\u56fe\u7247\u76f4\u63a5\u751f\u6210 C \u5934\u6587\u4ef6\uff0c\u7f16\u8bd1\u5230\u56fa\u4ef6\u4e2d\uff0c\u7136\u540e\u5728\u56fa\u4ef6\u4e2d\u6bcf\u4e2a\u5c3a\u5bf8\u7684\u6bcf\u4e2a\u56fe\u7247\uff0c\u5747\u89e3\u7801 10 \u6b21\u5e76\u4e0a\u5c4f\uff0c\u8bb0\u5f55\u5e73\u5747\u8017\u65f6\u3002<\/p>\n<pre><code class=\"language-cpp\">static bool DecodeWithJpegdec(const uint8_t *data, size_t len) {\n  BeginRunMetrics();\n  \/\/ Image arrays are stored in flash (.rodata) on ESP32, so use openFLASH().\n  int rc = gJpegDec.openFLASH(data, static_cast&lt;int&gt;(len), JpegdecOutput);\n  if (rc == 0) {\n    EndRunMetrics();\n    return false;\n  }\n  gJpegDec.setPixelType(RGB565_LITTLE_ENDIAN);\n  rc = gJpegDec.decode(0, 0, 0);\n  gJpegDec.close();\n  EndRunMetrics();\n  return rc != 0;\n}\n\nstatic bool DecodeWithTjpg(const uint8_t *data, size_t len) {\n  BeginRunMetrics();\n  TJpgDec.setSwapBytes(false);\n  TJpgDec.setCallback(TjpgOutput);\n  const bool ok = TJpgDec.drawJpg(0, 0, data, static_cast&lt;uint32_t&gt;(len)) == JDR_OK;\n  EndRunMetrics();\n  return ok;\n}<\/code><\/pre>\n<p>\u5176\u4ed6\u5e93\u7684\u6d4b\u8bd5\u4ee3\u7801\u7c7b\u4f3c\uff0c\u4e3b\u8981\u662f\u8c03\u6574 API \u8c03\u7528\u65b9\u5f0f\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E6%B5%8B%E8%AF%95%E7%BB%93%E6%9E%9C\"><\/span>\u6d4b\u8bd5\u7ed3\u679c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><strong>160x80 JPEG \u89e3\u7801\u901f\u5ea6<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Library<\/th>\n<th style=\"text-align: right;\">Decode(ms)<\/th>\n<th style=\"text-align: right;\">Draw(ms)<\/th>\n<th style=\"text-align: right;\">Total(ms)<\/th>\n<th style=\"text-align: right;\">FPS<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>JPEGDEC<\/td>\n<td style=\"text-align: right;\">6.79<\/td>\n<td style=\"text-align: right;\">7.67<\/td>\n<td style=\"text-align: right;\">14.46<\/td>\n<td style=\"text-align: right;\">69.2<\/td>\n<\/tr>\n<tr>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">10.54<\/td>\n<td style=\"text-align: right;\">8.63<\/td>\n<td style=\"text-align: right;\">19.16<\/td>\n<td style=\"text-align: right;\">52.2<\/td>\n<\/tr>\n<tr>\n<td><strong>ESP32_NEW_JPEG<\/strong><\/td>\n<td style=\"text-align: right;\"><strong>3.89<\/strong><\/td>\n<td style=\"text-align: right;\">7.51<\/td>\n<td style=\"text-align: right;\">11.40<\/td>\n<td style=\"text-align: right;\">87.7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>240x240 JPEG \u89e3\u7801\u901f\u5ea6<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Library<\/th>\n<th style=\"text-align: right;\">Decode(ms)<\/th>\n<th style=\"text-align: right;\">Draw(ms)<\/th>\n<th style=\"text-align: right;\">Total(ms)<\/th>\n<th style=\"text-align: right;\">FPS<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>JPEGDEC<\/strong><\/td>\n<td style=\"text-align: right;\">26.64<\/td>\n<td style=\"text-align: right;\">33.98<\/td>\n<td style=\"text-align: right;\">60.62<\/td>\n<td style=\"text-align: right;\">16.5<\/td>\n<\/tr>\n<tr>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">43.05<\/td>\n<td style=\"text-align: right;\">38.67<\/td>\n<td style=\"text-align: right;\">81.72<\/td>\n<td style=\"text-align: right;\">12.2<\/td>\n<\/tr>\n<tr>\n<td>ESP32_NEW_JPEG<\/td>\n<td style=\"text-align: right;\">26.08<\/td>\n<td style=\"text-align: right;\">34.87<\/td>\n<td style=\"text-align: right;\">60.95<\/td>\n<td style=\"text-align: right;\">16.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>320x240 JPEG \u89e3\u7801\u901f\u5ea6<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Library<\/th>\n<th style=\"text-align: right;\">Decode(ms)<\/th>\n<th style=\"text-align: right;\">Draw(ms)<\/th>\n<th style=\"text-align: right;\">Total(ms)<\/th>\n<th style=\"text-align: right;\">FPS<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>JPEGDEC<\/strong><\/td>\n<td style=\"text-align: right;\">34.89<\/td>\n<td style=\"text-align: right;\">45.37<\/td>\n<td style=\"text-align: right;\">80.26<\/td>\n<td style=\"text-align: right;\">12.5<\/td>\n<\/tr>\n<tr>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">56.53<\/td>\n<td style=\"text-align: right;\">51.54<\/td>\n<td style=\"text-align: right;\">108.07<\/td>\n<td style=\"text-align: right;\">9.3<\/td>\n<\/tr>\n<tr>\n<td>ESP32_NEW_JPEG<\/td>\n<td style=\"text-align: right;\">34.48<\/td>\n<td style=\"text-align: right;\">46.46<\/td>\n<td style=\"text-align: right;\">80.95<\/td>\n<td style=\"text-align: right;\">12.4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c<strong>ESP32_NEW_JPEG \u786c\u4ef6\u52a0\u901f\u771f\u7684\u5f3a<\/strong>\uff0c\u5728\u4f4e\u5206\u8fa8\u7387\u4e0b\u6bd4\u8f6f\u4ef6\u89e3\u7801\u5feb\u4e86 2 \u500d\u591a\u3002<\/p>\n<p>\u4f46\u662f <strong>JPEGDEC \u65b0\u7248\u672c\u5728\u4f7f\u7528\u4e86 SIMD \u4e4b\u540e\uff0c\u6027\u80fd\u4e5f\u5f88\u5f3a\u52b2<\/strong>\uff0c\u751a\u81f3\u5728 320x240 \u5206\u8fa8\u7387\u4e0b\u9886\u5148 ESP32_NEW_JPEG \u4e00\u70b9\u70b9\uff0c\u5f53\u7136\u8fd9\u4e5f\u6709\u53ef\u80fd\u662f\u6d4b\u8bd5\u8bef\u5dee \ud83d\ude03\u3002<\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%86%85%E5%AD%98%E5%8D%A0%E7%94%A8%E5%AF%B9%E6%AF%94\"><\/span>\u5185\u5b58\u5360\u7528\u5bf9\u6bd4<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u9664\u4e86\u901f\u5ea6\uff0c\u5185\u5b58\u5360\u7528\u4e5f\u5f88\u91cd\u8981\uff0c\u7279\u522b\u662f\u5bf9\u4e8e\u590d\u6742\u9879\u76ee\u3002<\/p>\n<p><strong>\u6ce8\u610f\uff1a\u8fd9\u91cc\u53ea\u662f\u7b80\u5355\u7684\u7edf\u8ba1\u4e86\u5806\u5185\u5b58\u548c\u6808\u5927\u5c0f\u7684\u53d8\u5316\uff0c\u5e76\u4e0d\u662f\u5f88\u4e25\u8c28\uff0c\u4ec5\u4f9b\u53c2\u8003\u3002<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>Size<\/th>\n<th>Library<\/th>\n<th style=\"text-align: right;\">HeapDelta(B)<\/th>\n<th style=\"text-align: right;\">StackDelta(B)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>160x80<\/td>\n<td>JPEGDEC<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1271<\/td>\n<\/tr>\n<tr>\n<td>160x80<\/td>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1189<\/td>\n<\/tr>\n<tr>\n<td>160x80<\/td>\n<td>ESP32_NEW_JPEG<\/td>\n<td style=\"text-align: right;\">38024<\/td>\n<td style=\"text-align: right;\">1006<\/td>\n<\/tr>\n<tr>\n<td>240x240<\/td>\n<td>JPEGDEC<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1272<\/td>\n<\/tr>\n<tr>\n<td>240x240<\/td>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1241<\/td>\n<\/tr>\n<tr>\n<td>240x240<\/td>\n<td>ESP32_NEW_JPEG<\/td>\n<td style=\"text-align: right;\">128648<\/td>\n<td style=\"text-align: right;\">989<\/td>\n<\/tr>\n<tr>\n<td>320x240_B<\/td>\n<td>JPEGDEC<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1265<\/td>\n<\/tr>\n<tr>\n<td>320x240_B<\/td>\n<td>Tjpg_Decoder<\/td>\n<td style=\"text-align: right;\">0<\/td>\n<td style=\"text-align: right;\">1252<\/td>\n<\/tr>\n<tr>\n<td>320x240_B<\/td>\n<td>ESP32_NEW_JPEG<\/td>\n<td style=\"text-align: right;\">167560<\/td>\n<td style=\"text-align: right;\">987<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u53ef\u4ee5\u770b\u5230\u53ea\u6709 ESP32_NEW_JPEG \u4f7f\u7528\u5230\u4e86\u5806\u5185\u5b58\uff0c\u800c\u53e6\u5916\u4e24\u4e2a\u5e93\u76f4\u63a5\u901a\u8fc7\u6808\u5185\u5b58\u89e3\u7801\u3002<\/p>\n<p>\u53e6\u5916\u4e0d\u7ba1\u56fe\u7247\u5927\u5c0f\uff0c\u51e0\u4e2a\u5e93\u5728\u6808\u5185\u5b58\u4f7f\u7528\u4e0a\u90fd\u5dee\u4e0d\u591a\u3002<\/p>\n<p><strong>\u6ce8\uff1aESP32_NEW_JPEG \u8fd8\u6709 block \u65b9\u5f0f\u89e3\u7801\uff0c\u8fd9\u91cc\u6ca1\u6709\u4f7f\u7528\uff0c\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u53ef\u4ee5\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%B0%8F%E7%BB%93\"><\/span>\u5c0f\u7ed3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u7ecf\u8fc7\u4e00\u756a\u6d4b\u8bd5\uff0c\u5f97\u51fa\u4ee5\u4e0b\u7ed3\u8bba:<\/p>\n<p><strong>JPEG \u89e3\u7801\u9009\u62e9\u6307\u5357\uff1a<\/strong><\/p>\n<table>\n<thead>\n<tr>\n<th>\u573a\u666f<\/th>\n<th>\u63a8\u8350\u5e93<\/th>\n<th>\u7406\u7531<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8ffd\u6c42\u6027\u80fd<\/td>\n<td>JPEGDEC \u6216 ESP32_NEW_JPEG<\/td>\n<td>\u786c\u4ef6\u52a0\u901f\uff0c\u901f\u5ea6\u5feb<\/td>\n<\/tr>\n<tr>\n<td>\u8282\u7701\u5185\u5b58<\/td>\n<td>JPEGDEC<\/td>\n<td>\u5185\u5b58\u5360\u7528\u5c0f\uff0c\u901f\u5ea6\u4e5f\u4e0d\u9519<\/td>\n<\/tr>\n<tr>\n<td>\u9700\u8981 Progressive JPEG<\/td>\n<td>JPEGDEC<\/td>\n<td>ESP32-JPEG \u4e0d\u652f\u6301<\/td>\n<\/tr>\n<tr>\n<td>\u914d\u5408 TFT_eSPI<\/td>\n<td>TJpg_Decoder<\/td>\n<td>\u96c6\u6210\u5ea6\u9ad8\uff0c\u4f7f\u7528\u65b9\u4fbf<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5728\u5b8c\u6210\u6d4b\u8bd5\u4e4b\u524d\uff0c\u4ee5\u4e3a ESP32_NEW_JPEG \u4f1a\u6709\u7edd\u5bf9\u4f18\u52bf\u9886\u5148\uff0c\u6bd5\u7adf\u5b98\u65b9\u7406\u8bba\u4e0a\u53ef\u4ee5\u53d1\u6325 ESP32-S3 \u7684\u5168\u90e8\u6027\u80fd\u3002<\/p>\n<p>\u4f46\u662f\u5728\u6d4b\u8bd5\u5b8c\u6210\u540e\u53d1\u73b0 JPEGDEC \u5728\u6709 SIMD \u6307\u4ee4\u52a0\u6301\u4e0b\u4e4b\u540e\uff0c\u6027\u80fd\u4e5f\u76f8\u5f53\u4e0d\u9519\u3002<\/p>\n<p><strong>\u6838\u5fc3\u5efa\u8bae:<\/strong><\/p>\n<ol>\n<li><strong>\u4f18\u5148\u4f7f\u7528 ESP32-JPEG<\/strong> - \u5982\u679c\u5185\u5b58\u4e0a\u4e0d\u592a\u7d27\u5f20\uff0c\u5e76\u4e14\u56fe\u7247\u90fd\u662f Baseline JPEG\uff0c\u53ef\u4ee5\u4f18\u5148\u9009\u62e9 ESP32-JPEG\uff0c\u6bd5\u7adf\u5b98\u65b9\u5e93\u3002<\/li>\n<li><strong>JPEGDEC \u4f5c\u4e3a\u5907\u9009<\/strong> - \u5185\u5b58\u6bd4\u8f83\u7d27\u5f20\uff0c\u6216\u8005\u9700\u8981\u517c\u5bb9 Progressive JPEG \u65f6\u4f7f\u7528\u3002<\/li>\n<\/ol>\n<p>\u987a\u4fbf\u518d\u63d0\u4e00\u53e5\uff0c<strong>ESP32 \u7cfb\u5217\u4e2d\uff0c\u53ea\u6709 ESP32-S3 \u4ee5\u53ca ESP32-P4 \u624d\u652f\u6301 SIMD \u6307\u4ee4<\/strong>\uff0c\u56e0\u6b64\u5982\u679c\u662f\u4f7f\u7528 ESP32-S3 \u4ee5\u5916\u7684\u82af\u7247\uff0c\u53ef\u80fd\u6d4b\u8bd5\u7ed3\u679c\u4f1a\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<p>\u518d\u518d\u63d0\u4e00\u4e0b\uff0c\u8fd9\u4e9b\u6570\u636e\u90fd\u662f\u6211\u81ea\u5df1\u6d4b\u7684\uff0c<strong>\u5728\u4e0d\u540c\u7684\u56fe\u7247\u8d28\u91cf\u3001\u7f16\u7801\u65b9\u5f0f\u3001\u6d4b\u8bd5\u4ee3\u7801\u4e0a\u6027\u80fd\u53ef\u80fd\u4f1a\u6709\u5dee\u5f02\uff0c\u4ec5\u4f9b\u53c2\u8003 \ud83d\ude03\u3002<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99\"><\/span>\u53c2\u8003\u8d44\u6599<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Lenna\">https:\/\/en.wikipedia.org\/wiki\/Lenna<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/bitbank2\/JPEGDEC\">https:\/\/github.com\/bitbank2\/JPEGDEC<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/Bodmer\/TJpg_Decoder\">https:\/\/github.com\/Bodmer\/TJpg_Decoder<\/a><\/li>\n<li><a href=\"https:\/\/developer.espressif.com\/blog\/2025\/09\/esp-new-jpeg-introduction\/\">https:\/\/developer.espressif.com\/blog\/2025\/09\/esp-new-jpeg-introduction\/<\/a><\/li>\n<li><a href=\"https:\/\/github.com\/espressif\/esp-adf-libs\/tree\/master\/esp_new_jpeg\">https:\/\/github.com\/espressif\/esp-adf-libs\/tree\/master\/esp_new_jpeg<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u524d\u6bb5\u65f6\u95f4\u505a\u4e86\u4e2a ESP32-S3 \u4e32\u6d41\u5c0f\u7535\u89c6\uff08\u89c1 \u684c\u9762\u5c0f\u7535\u89c6\u65b0\u601d\u8def\uff0cESP32- &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/xujiwei.com\/blog\/2026\/03\/esp32-jpeg-decoder-test\/\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":2081,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[402],"tags":[262,328,500,457],"_links":{"self":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/2083"}],"collection":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/comments?post=2083"}],"version-history":[{"count":0,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/posts\/2083\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media\/2081"}],"wp:attachment":[{"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/media?parent=2083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/categories?post=2083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xujiwei.com\/blog\/wp-json\/wp\/v2\/tags?post=2083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}