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Optimize PDFtoPPM batch conversion to run continuously

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Previously the PDFtoPPM conversion in batches would stop after
conversion to send the data. But by sending the data in the following
loop, we can perform the data sending at the "same time" as converting
a batch.
This commit is contained in:
deeplow 2023-10-25 16:42:42 +01:00
parent 3046cb7b8b
commit 45a71224cb
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1 changed files with 21 additions and 2 deletions
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23
dangerzone/conversion/doc_to_pixels.py
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@ -288,8 +288,27 @@ class DocumentToPixels(DangerzoneConverter):
else:
timeout_per_batch = timeout / (int(num_pages / PAGE_BATCH_SIZE) + 1)
for first_page, last_page in batch_iterator(num_pages):
await self.pdf_to_rgb(first_page, last_page, pdf_filename, timeout_per_batch)
await self.send_rgb_files(first_page, last_page, num_pages)
# XXX send data from the previous loop's conversion to
# always be able to process and send data at the same time
if first_page == 1: # If in first pass
await self.pdf_to_rgb(
first_page, last_page, pdf_filename, timeout_per_batch
)
delayed_send_rgb_files = self.send_rgb_files(
first_page, last_page, num_pages
)
else:
await asyncio.gather(
self.pdf_to_rgb(
first_page, last_page, pdf_filename, timeout_per_batch
),
delayed_send_rgb_files,
)
delayed_send_rgb_files = self.send_rgb_files(
first_page, last_page, num_pages
)
await delayed_send_rgb_files
final_files = (
glob.glob("/tmp/page-*.rgb")