WIP : Crop#444
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Addition in Test loading the gateware $make gateware-load $make firmware-load BIOS>serialboot $make firmware-connect
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The crop commit message should start with a capital and contain more details about what you changed and why |
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the getting-started commit shouldn't be a part of this PR - it is already in it's own (#443) |
paddatrapper
suggested changes
Jun 12, 2018
| wputs("change crop status (alias: 'cr')"); | ||
| wputs(" crop <on/off> - Turn on/off crop feature"); | ||
| } | ||
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Extra new line here needs to be removed
| crop_status(true); | ||
| wprintf("crop enable\n"); | ||
| } | ||
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| wprintf("Heartbeat disabled\n"); | ||
| } | ||
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| static void crop_disable(void) | ||
| { | ||
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| static void crop_disable(void) | ||
| { | ||
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| crop_status(false); |
| framebuffer[addr+i+(processor_h_active/2)*j] = YCBCR422_BLACK; | ||
| } | ||
| } | ||
| //right clipping |
| } | ||
| //right clipping | ||
| addr = 0 + (processor_h_active/2)*top + (processor_h_active/2) - right; | ||
| for (i=0; i<right; i++) |
| addr = 0 + (processor_h_active/2)*top + (processor_h_active/2) - right; | ||
| for (i=0; i<right; i++) | ||
| { | ||
| for (j=0; j<processor_v_active - bottom; j++) |
| //Bottom clipping | ||
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| addr = 0 + (processor_h_active/2)*(processor_v_active-bottom);// + (processor_h_active/2) - right; | ||
| for (i=0; i<processor_h_active/2; i++){ |
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This loop and the loop starting at L#52 can be combined
| addr = 0 + (processor_h_active/2)*top + (processor_h_active/2) - right; | ||
| for (i=0; i<right; i++) | ||
| { | ||
| for (j=0; j<processor_v_active - bottom; j++) |
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Invert this loop and the loop at L#70. Then these loops can be combined
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In general - try reduce the number of loops. That way the current O(n^2) performance can be improved, leading to less processor usage. |
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WIP :This is the initial step towards adding the support for crop feature to existing HDMI2USB-litex-firmware.
This allows the clipping of top,left,bottom,right of a frame but there is an issue of flickering