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mitus/media/docs/client-pipeline.svg
2026-04-09 18:19:03 -03:00

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<!-- Title: client_pipeline Pages: 1 -->
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<title>client_pipeline</title>
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<g id="clust1" class="cluster">
<title>cluster_main</title>
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<text xml:space="preserve" text-anchor="middle" x="240.5" y="-385.85" font-family="monospace" font-size="14.00" fill="#a6adc8">main thread &#160;(tokio async)</text>
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<title>cluster_pipeline</title>
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<text xml:space="preserve" text-anchor="middle" x="301" y="-949.47" font-family="monospace" font-size="14.00" fill="#a6adc8">capture&#45;pipeline thread &#160;(blocking)</text>
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<!-- drm -->
<g id="node1" class="node">
<title>drm</title>
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<text xml:space="preserve" text-anchor="middle" x="308" y="-1091.61" font-family="monospace" font-size="14.00" fill="#cdd6f4">/dev/dri/card0</text>
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<title>capture</title>
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<text xml:space="preserve" text-anchor="middle" x="308" y="-911.58" font-family="monospace" font-size="14.00" fill="#cdd6f4">KmsCapture</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-894.33" font-family="monospace" font-size="14.00" fill="#cdd6f4">─────────────────</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-877.08" font-family="monospace" font-size="14.00" fill="#cdd6f4">ffmpeg kmsgrab device</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-859.83" font-family="monospace" font-size="14.00" fill="#cdd6f4">decoder: passthrough</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-842.58" font-family="monospace" font-size="14.00" fill="#cdd6f4">output: DRM_PRIME frames</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-825.33" font-family="monospace" font-size="14.00" fill="#cdd6f4">+ hw_frames_ctx (DRM device)</text>
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<!-- drm&#45;&gt;capture -->
<g id="edge1" class="edge">
<title>drm&#45;&gt;capture</title>
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<text xml:space="preserve" text-anchor="middle" x="353.38" y="-995.97" font-family="monospace" font-size="14.00" fill="#a6adc8">DMA&#45;BUF</text>
<text xml:space="preserve" text-anchor="middle" x="353.38" y="-978.72" font-family="monospace" font-size="14.00" fill="#a6adc8">(zero copy)</text>
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<!-- vaapi -->
<g id="node2" class="node">
<title>vaapi</title>
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<text xml:space="preserve" text-anchor="middle" x="596" y="-877.08" font-family="monospace" font-size="14.00" fill="#cdd6f4">/dev/dri/renderD128</text>
<text xml:space="preserve" text-anchor="middle" x="596" y="-859.83" font-family="monospace" font-size="14.00" fill="#cdd6f4">(VAAPI)</text>
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<title>encoder</title>
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<text xml:space="preserve" text-anchor="middle" x="308" y="-720.3" font-family="monospace" font-size="14.00" fill="#cdd6f4">VaapiEncoder</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-703.05" font-family="monospace" font-size="14.00" fill="#cdd6f4">─────────────────</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-685.8" font-family="monospace" font-size="14.00" fill="#cdd6f4">[lazy init on frame 1]</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-668.55" font-family="monospace" font-size="14.00" fill="#cdd6f4">buffersrc ← hw_frames_ctx</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-651.3" font-family="monospace" font-size="14.00" fill="#cdd6f4">hwmap derive_device=vaapi</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-634.05" font-family="monospace" font-size="14.00" fill="#cdd6f4">scale_vaapi NV12 1920×1080</text>
<text xml:space="preserve" text-anchor="middle" x="308" y="-616.8" font-family="monospace" font-size="14.00" fill="#cdd6f4">h264_vaapi QP=20 GOP=30</text>
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<!-- vaapi&#45;&gt;encoder -->
<g id="edge2" class="edge">
<title>vaapi&#45;&gt;encoder</title>
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<text xml:space="preserve" text-anchor="middle" x="514.92" y="-781.44" font-family="monospace" font-size="14.00" fill="#a6adc8">hw device</text>
<text xml:space="preserve" text-anchor="middle" x="514.92" y="-764.19" font-family="monospace" font-size="14.00" fill="#a6adc8">(derived)</text>
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<title>net</title>
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<text xml:space="preserve" text-anchor="middle" x="270" y="-55.73" font-family="monospace" font-size="14.00" fill="#cdd6f4">TCP :4444</text>
<text xml:space="preserve" text-anchor="middle" x="270" y="-38.48" font-family="monospace" font-size="14.00" fill="#cdd6f4">mcrndeb</text>
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<title>session_start</title>
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<text xml:space="preserve" text-anchor="middle" x="96" y="-241.93" font-family="monospace" font-size="14.00" fill="#cdd6f4">control message</text>
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<title>write</title>
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<text xml:space="preserve" text-anchor="middle" x="270" y="-153.15" font-family="monospace" font-size="14.00" fill="#cdd6f4">write_packet()</text>
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<title>session_start&#45;&gt;write</title>
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<title>mux</title>
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<text xml:space="preserve" text-anchor="middle" x="301" y="-347.96" font-family="monospace" font-size="14.00" fill="#cdd6f4">select!</text>
<text xml:space="preserve" text-anchor="middle" x="301" y="-330.71" font-family="monospace" font-size="14.00" fill="#cdd6f4">pkt_rx &#160;| &#160;keepalive &#160;| &#160;ctrl&#45;c</text>
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<title>keepalive</title>
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<title>mux&#45;&gt;keepalive</title>
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<title>mux&#45;&gt;write</title>
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<title>keepalive&#45;&gt;write</title>
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<title>write&#45;&gt;net</title>
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<!-- capture&#45;&gt;encoder -->
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<title>capture&#45;&gt;encoder</title>
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<text xml:space="preserve" text-anchor="middle" x="345.12" y="-781.44" font-family="monospace" font-size="14.00" fill="#a6adc8">AVFrame</text>
<text xml:space="preserve" text-anchor="middle" x="345.12" y="-764.19" font-family="monospace" font-size="14.00" fill="#a6adc8">DRM_PRIME</text>
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<title>chan</title>
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<text xml:space="preserve" text-anchor="middle" x="301" y="-485.88" font-family="monospace" font-size="14.00" fill="#cdd6f4">mpsc::channel(64)</text>
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<title>encoder&#45;&gt;chan</title>
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<text xml:space="preserve" text-anchor="middle" x="411.96" y="-572.91" font-family="monospace" font-size="14.00" fill="#a6adc8">EncodedPacket</text>
<text xml:space="preserve" text-anchor="middle" x="411.96" y="-555.66" font-family="monospace" font-size="14.00" fill="#a6adc8">{ data, pts, keyframe, … }</text>
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<!-- chan&#45;&gt;mux -->
<g id="edge5" class="edge">
<title>chan&#45;&gt;mux</title>
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<title>types</title>
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<text xml:space="preserve" text-anchor="middle" x="535" y="-1126.11" font-family="monospace" font-size="14.00" fill="#cdd6f4">EncodedPacket</text>
<text xml:space="preserve" text-anchor="middle" x="535" y="-1108.86" font-family="monospace" font-size="14.00" fill="#cdd6f4">─────────────</text>
<text xml:space="preserve" text-anchor="middle" x="535" y="-1091.61" font-family="monospace" font-size="14.00" fill="#cdd6f4">data: Vec&lt;u8&gt; &#160;(H.264 NALUs)</text>
<text xml:space="preserve" text-anchor="middle" x="535" y="-1074.36" font-family="monospace" font-size="14.00" fill="#cdd6f4">pts / dts: i64</text>
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<text xml:space="preserve" text-anchor="middle" x="535" y="-1039.86" font-family="monospace" font-size="14.00" fill="#cdd6f4">time_base: num/den</text>
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