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modules/media/thumbnail: Implement uncached width and height scale thumbnailing.

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closes #40.
This commit is contained in:
Jason Volk 2019-05-29 17:44:10 -07:00
parent 21ca583a2b
commit d156965271
1 changed files with 42 additions and 18 deletions
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52
modules/media/thumbnail.cc
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@ -138,17 +138,16 @@ get__thumbnail_local(client &client,
};
});
// Send HTTP head to client
const resource::response response
const unique_buffer<mutable_buffer> buf
{
client, http::OK, content_type, file_size
file_size
};
size_t sent_size{0};
const auto sink{[&client, &sent_size]
size_t copied(0);
const auto sink{[&buf, &copied]
(const const_buffer &block)
{
sent_size += client.write_all(block);
copied += copy(buf + copied, block);
}};
const size_t read_size
@ -156,20 +155,45 @@ get__thumbnail_local(client &client,
read_each_block(room, sink)
};
if(unlikely(read_size != file_size)) log::error
if(unlikely(read_size != file_size || file_size != copied))
throw ircd::error
{
media_log, "File %s/%s [%s] size mismatch: expected %zu got %zu",
"File %s/%s [%s] size mismatch: expected %zu got %zu copied %zu",
hostname,
mediaid,
string_view{room.room_id},
file_size,
read_size
read_size,
copied
};
// Have to kill client here after failing content length expectation.
if(unlikely(read_size != file_size))
client.close(net::dc::RST, net::close_ignore);
const auto width
{
request.query.get<size_t>("width", 0)
};
assert(read_size == sent_size);
return response;
const auto height
{
request.query.get<size_t>("height", 0)
};
if(!width || !height || width > 1536 || height > 1536) // TODO: confs..
return resource::response
{
client, buf, content_type
};
magick::thumbnail
{
buf, {width, height}, [&client, &content_type]
(const const_buffer &buf)
{
resource::response
{
client, buf, content_type
};
}
};
return {};
}