Great work, very inspired. I am very new in the web world, but i can understand your great work. big fan. why don't you just use the "new fetch" api as it already support a stream, but the "legacy XMLHttpRequest " may need to send multiple request with range making the logic a bit complex. also, the src "file" may not be a fix-sized video file ,it may be a realtime live stream, in this case ,the content-length was unknown, so the range request is not possible, right?
I see your entire project, you really have done some great work. appreciate. 在2022年1月8日星期六 UTC+8 00:31:05<Floh> 写道： > You can read the C and Javascript source code in my sokol_fetch.h header > for inspiration, this supports reading large data files piece by piece via > HTTP Range requests (via XMLHttpRequest). > > https://github.com/floooh/sokol/blob/master/sokol_fetch.h > > The interesting stuff is here: > > > https://github.com/floooh/sokol/blob/4ff3ed7d604c3a876146cbf2d89597d81812de22/sokol_fetch.h#L1923-L2064 > > The fetched data is transferred to the C side by directly copying into the > WASM heap here (using a pointer to a pre-allocated buffer from the C side): > > > https://github.com/floooh/sokol/blob/4ff3ed7d604c3a876146cbf2d89597d81812de22/sokol_fetch.h#L1959 > > It should also be possible to dynamically allocate a memory chunk in the > WASM heap on the Javascript side, but I haven't tried that yet. For such > things I usually look in the Emscripten SDK's 'src' directory for examples. > > An example for sokol_fetch.h which loads data via Range requests is here > (this uses https://github.com/phoboslab/pl_mpeg/blob/master/pl_mpeg.h to > decode the MPEG stream): > > https://floooh.github.io/sokol-html5/plmpeg-sapp.html > > Cheers! > -Floh. > > On Friday, 7 January 2022 at 13:07:44 UTC+1 [email protected] wrote: > >> Hi, >> I want to compile ffmpeg to play some H.265 video on the web, i want to >> use fetch api(https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API) >> in js layer to fetch the media data from my server and I can get a >> ReadableStream, but how can i get the data chunk from this stream? what's >> the best practice, or do i have a better solution? >> >> BTW I've tried the native fetch api ,since the media file may be too big >> to load into memory, i must play it piece by piece. but the native fetch >> api couldn't implement a "data chunk stream", i have to give it up. >> >> Best wishes. >> Jiaozebo >> > -- You received this message because you are subscribed to the Google Groups "emscripten-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/emscripten-discuss/84dfc243-2f25-4fe0-a75b-47e8e35514b8n%40googlegroups.com.
