Some work on diagram.

1 files changed, 1067 insertions, 570 deletions

diff --git a/doc/design/dcpomatic.svg b/doc/design/dcpomatic.svg
index f1b61f8c1..4a626c9df 100644
--- a/doc/design/dcpomatic.svg
+++ b/doc/design/dcpomatic.svg
@@ -7,6 +7,7 @@
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    xmlns:svg="http://www.w3.org/2000/svg"
    xmlns="http://www.w3.org/2000/svg"
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@@ -15,222 +16,274 @@
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          style="font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#0000ff;fill-opacity:1;stroke:none;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono"
-         xml:space="preserve"><tspan
-           y="169.8515"
-           x="187"
+         x="187"
+         y="169.8515"
+         id="text2987"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
            id="tspan2989"
-           sodipodi:role="line">Player</tspan></text>
+           x="187"
+           y="169.8515">Player</tspan></text>
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-         x="178"
-         height="24"
-         width="139"
+         style="color:#000000;fill:none;stroke:#0000ff;stroke-width:0.99999988px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate"
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+         width="139"
+         height="24"
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       <text
-         sodipodi:linespacing="125%"
-         id="text2993"
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-         x="186.95799"
+         xml:space="preserve"
          style="font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#ff0000;fill-opacity:1;stroke:none;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono"
-         xml:space="preserve"><tspan
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-           x="186.95799"
+         x="186.95799"
+         y="194.74094"
+         id="text2993"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
            id="tspan2995"
-           sodipodi:role="line">get_video()</tspan><tspan
-           id="tspan2997"
-           y="212.24094"
            x="186.95799"
-           sodipodi:role="line">get_audio()</tspan></text>
+           y="194.74094">get_video()</tspan><tspan
+           sodipodi:role="line"
+           x="186.95799"
+           y="212.24094"
+           id="tspan2997">get_audio()</tspan></text>
       <text
-         sodipodi:linespacing="125%"
-         id="text2999"
-         y="226.66934"
-         x="187.10799"
+         xml:space="preserve"
          style="font-size:8px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#008000;fill-opacity:1;stroke:none;font-family:Latin Modern Roman;-inkscape-font-specification:Latin Modern Roman"
-         xml:space="preserve"><tspan
+         x="187.10799"
+         y="226.66934"
+         id="text2999"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
+           x="187.10799"
            y="226.66934"
+           id="tspan3957">Get video frame(s) at a time or a</tspan><tspan
+           sodipodi:role="line"
            x="187.10799"
-           id="tspan3001"
-           sodipodi:role="line">Get a video frame or a section of</tspan><tspan
-           id="tspan3003"
            y="236.66934"
+           id="tspan3009">section of audio from a time range.<tspan
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;fill:#008000;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono"
+   id="tspan3011"></tspan></tspan><tspan
+           sodipodi:role="line"
            x="187.10799"
-           sodipodi:role="line">audio from a time range given in</tspan><tspan
-           id="tspan3009"
            y="246.66934"
-           x="187.10799"
-           sodipodi:role="line"><tspan
-   id="tspan3011"
-   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;fill:#008000;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono">DCPTime</tspan>.</tspan></text>
+           id="tspan3971"><tspan
+   style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;fill:#008000;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono"
+   id="tspan3973"><tspan
+   style="-inkscape-font-specification:Latin Modern Roman;font-family:Latin Modern Roman"
+   id="tspan3975">Times are expressed as </tspan>DCPTime</tspan>.</tspan></text>
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+       transform="translate(467.53078,26.938314)"
+       id="g3381">
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       <text
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-         xml:space="preserve"><tspan
-           y="101.05739"
-           x="372.08694"
+         x="372.08694"
+         y="101.05739"
+         id="text2987-7"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
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-           sodipodi:role="line">PlayerVideoFrame</tspan></text>
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+         style="color:#000000;fill:none;stroke:#0000ff;stroke-width:0.99999988px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate"
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+         width="139"
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       <text
-         sodipodi:linespacing="125%"
-         id="text3067"
-         y="121.9117"
-         x="369.38266"
+         xml:space="preserve"
          style="font-size:8px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-indent:0;text-align:start;text-decoration:none;line-height:125%;letter-spacing:0px;word-spacing:0px;text-transform:none;direction:ltr;block-progression:tb;writing-mode:lr-tb;text-anchor:start;baseline-shift:baseline;color:#000000;fill:#008000;fill-opacity:1;fill-rule:nonzero;stroke:none;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;font-family:Latin Modern Roman;-inkscape-font-specification:Latin Modern Roman"
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-           x="369.38266"
+         x="369.38266"
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+         id="text3067"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
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-           sodipodi:role="line">Video that has come out of a player</tspan><tspan
-           id="tspan3096"
+           x="369.38266"
+           y="121.9117">Video that has come out of a player</tspan><tspan
+           sodipodi:role="line"
+           x="369.38266"
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+           id="tspan3096">except with the bits still in their</tspan><tspan
+           sodipodi:role="line"
            x="369.38266"
-           sodipodi:role="line">except with the bits still in their</tspan><tspan
-           id="tspan3098"
            y="141.9117"
+           id="tspan3098">raw form (we may want to combine</tspan><tspan
+           sodipodi:role="line"
            x="369.38266"
-           sodipodi:role="line">raw form (we may want to combine</tspan><tspan
-           id="tspan3102"
            y="151.9117"
+           id="tspan3102">the bits on a remote machine, or</tspan><tspan
+           sodipodi:role="line"
            x="369.38266"
-           sodipodi:role="line">the bits on a remote machine, or</tspan><tspan
-           id="tspan3104"
            y="161.9117"
+           id="tspan3104">maybe not bother to combine them</tspan><tspan
+           sodipodi:role="line"
            x="369.38266"
-           sodipodi:role="line">maybe not bother to combine them</tspan><tspan
-           id="tspan3100"
            y="171.9117"
+           id="tspan3100">at all). <tspan
+   style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'"
+   id="tspan3212"> Note: no timing</tspan></tspan><tspan
+           sodipodi:role="line"
            x="369.38266"
-           sodipodi:role="line">at all). <tspan
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-           sodipodi:role="line"><tspan
-             id="tspan3216"
-             style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'">information.</tspan></tspan></text>
+           id="tspan3214"><tspan
+             style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'"
+             id="tspan3216">information.</tspan></tspan></text>
       <text
-         sodipodi:linespacing="125%"
-         id="text3130"
-         y="200.65807"
-         x="368.44266"
+         xml:space="preserve"
          style="font-size:14px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-indent:0;text-align:start;text-decoration:none;line-height:125%;letter-spacing:0px;word-spacing:0px;text-transform:none;direction:ltr;block-progression:tb;writing-mode:lr-tb;text-anchor:start;baseline-shift:baseline;color:#000000;fill:#ff0000;fill-opacity:1;fill-rule:nonzero;stroke:none;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;font-family:Latin Modern Mono;-inkscape-font-specification:Latin Modern Mono"
-         xml:space="preserve"><tspan
-           y="200.65807"
-           x="368.44266"
+         x="368.44266"
+         y="200.65807"
+         id="text3130"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
            id="tspan3132"
-           sodipodi:role="line">image()</tspan></text>
+           x="368.44266"
+           y="200.65807">image()</tspan></text>
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-         sodipodi:linespacing="125%"
-         id="text3155"
-         y="214.6459"
-         x="369.25467"
+         xml:space="preserve"
          style="font-size:8px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-indent:0;text-align:start;text-decoration:none;line-height:125%;letter-spacing:0px;word-spacing:0px;text-transform:none;direction:ltr;block-progression:tb;writing-mode:lr-tb;text-anchor:start;baseline-shift:baseline;color:#000000;fill:#008000;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:1;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate;font-family:Latin Modern Roman;-inkscape-font-specification:Latin Modern Roman"
-         xml:space="preserve"><tspan
-           y="214.6459"
-           x="369.25467"
+         x="369.25467"
+         y="214.6459"
+         id="text3155"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
            id="tspan3157"
-           sodipodi:role="line">Return image ready for the DCP</tspan><tspan
-           id="tspan3159"
-           y="224.6459"
            x="369.25467"
-           sodipodi:role="line">(scaled, cropped, subtitled etc.)</tspan></text>
+           y="214.6459">Return image ready for the DCP</tspan><tspan
+           sodipodi:role="line"
+           x="369.25467"
+           y="224.6459"
+           id="tspan3159">(scaled, cropped, subtitled etc.)</tspan></text>
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+       transform="translate(468.46449,26.938314)"
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       <text
-         sodipodi:linespacing="125%"
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+         xml:space="preserve"
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-         xml:space="preserve"><tspan
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-           x="371.15323"
+         x="371.15323"
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+         sodipodi:linespacing="125%"><tspan
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-           sodipodi:role="line">AudioBuffers</tspan></text>
+           x="371.15323"
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+         style="color:#000000;fill:none;stroke:#0000ff;stroke-width:0.99999988px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate"
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-         xml:space="preserve"><tspan
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-           x="371.08322"
+         x="371.08322"
+         y="289.62686"
+         id="text3318"
+         sodipodi:linespacing="125%"><tspan
+           sodipodi:role="line"
            id="tspan3320"
-           sodipodi:role="line">Some audio data.  <tspan
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-           style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'"
-           id="tspan3377"
-           y="299.62686"
            x="371.08322"
-           sodipodi:role="line">information.</tspan></text>
+           y="289.62686">Some audio data.  <tspan
+   style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'"
+   id="tspan3379">Note: no timing</tspan></tspan><tspan
+           sodipodi:role="line"
+           x="371.08322"
+           y="299.62686"
+           id="tspan3377"
+           style="font-style:italic;-inkscape-font-specification:'Latin Modern Roman, Italic'">information.</tspan></text>
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+           x="394.62704"
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+             sodipodi:role="line">Get a video frame (specified as an</tspan><tspan
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