Lephe
af5c16a3d3
* Move logic around tracking transfers to asyncio.c.
* Add a "short buffer" holding 0-3 bytes between writes, so that the
driver performs only 4-byte writes in the FIFO and a short write in
the commit, if needed.
- This is partially due to me thinking at some point that degrading
writing size was impossible, but it might actually be possible by
writing to FIFO/FIFO+2 or FIFO/FIFO+1/FIFO+2/FIFO+3.
- In any case I think this new approach wins on performance.
* Get rid of unit_size since we now always use 4 bytes.
* Add a waiting function which is used in usb_close() (and once tested
should be used in world switches too).
* Eliminate some of the special cases for the DCP, though not all (in
particular I can't get the commit to rely on the BEMP interrupt yet,
nor can I properly clear PID to NAK when unbinding).
43 lines
1 KiB
C
43 lines
1 KiB
C
#ifdef FX9860G
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#include <gint/usb.h>
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#include <gint/usb-ff-bulk.h>
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#include <gint/display.h>
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#include <gint/gray.h>
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static void capture_vram_gray(GUNUSED bool onscreen, char const *type)
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{
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uint32_t *light, *dark;
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if(onscreen) dgray_getscreen(&light, &dark);
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else dgray_getvram(&light, &dark);
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usb_fxlink_header_t header;
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usb_fxlink_image_t subheader;
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usb_fxlink_fill_header(&header, "fxlink", type,
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2048 + sizeof subheader);
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subheader.width = htole32(DWIDTH);
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subheader.height = htole32(DHEIGHT);
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subheader.pixel_format = htole32(USB_FXLINK_IMAGE_GRAY);
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int pipe = usb_ff_bulk_output();
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usb_write_sync(pipe, &header, sizeof header, false);
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usb_write_sync(pipe, &subheader, sizeof subheader, false);
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usb_write_sync(pipe, light, 1024, false);
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usb_write_sync(pipe, dark, 1024, false);
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usb_commit_sync(pipe);
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}
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void usb_fxlink_screenshot_gray(bool onscreen)
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{
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capture_vram_gray(onscreen, "image");
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}
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void usb_fxlink_videocapture_gray(bool onscreen)
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{
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capture_vram_gray(onscreen, "video");
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}
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#endif /* FX9860G */
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