63 lines
1.4 KiB
Lua
63 lines
1.4 KiB
Lua
local M = {}
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function M:peek(job)
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local start, cache = os.clock(), ya.file_cache(job)
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if not cache or self:preload() ~= 1 then
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return
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end
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ya.sleep(math.max(0, 0.1 + start - os.clock()))
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ya.image_show(cache, job.area)
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ya.preview_widgets(job, {})
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end
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function M:seek(job, units)
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local h = cx.active.current.hovered
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if h and h.url == job.file.url then
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local step = ya.clamp(-1, units, 1)
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ya.manager_emit("peek", { math.max(0, cx.active.preview.skip + step), only_if = job.file.url })
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end
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end
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function M:preload(job)
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ya.dbg("Preloading audio-preview ***")
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if not job then
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return 1
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end
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local percentage = 5 + job.skip
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if percentage > 95 then
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ya.manager_emit("peek", { 90, only_if = job.file.url, upper_bound = true })
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return 2
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end
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local cache = ya.file_cache(job)
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if not cache then
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return 1
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end
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local cha = fs.cha(cache)
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if cha and cha.len > 0 then
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return 1
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end
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-- generate image
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ya.err("Calling sox for: " .. tostring(job.file.url) .. ", cache: " .. tostring(cache))
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local child, code = Command("sox")
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:arg({tostring(job.file.url),
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"-n", "trim", "0:00", "1:00",
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"remix", "1",
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"rate", "12k",
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"spectrogram",
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"-o", tostring(cache)})
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:spawn()
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if not child then
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ya.err("spawn `sox` command returns " .. tostring(code))
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return 0
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end
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local status = child:wait()
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return status and status.success and 1 or 2
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end
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return M
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