GRC services: Difference between revisions

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 == Cmd1 ==
-Begins video stream. Can only be called once.
+Begins video stream. This must not be used more than once, even from a different service session: otherwise the sysmodule will assert.
 == Cmd2 ==
-Retrieves video data. Takes u32 "stream" (0: video, 1: audio), returns u32 (num_frames?), u32 data_size, u64 (start_timestamp?). Video stream writes H.264 NAL units to the output buffer (try <code>ffplay -f h264</code>). Official code uses buffer size 0x32000 for video, 0x1000 for audio, and multiple threads to read out both streams at the same time.
+Retrieves stream data, from the video recording being done of the currently running game title. Takes u32 "stream" (0: video, 1: audio), returns u32 (num_frames?), u32 data_size, u64 (start_timestamp?). Video stream writes H.264 NAL units to the output buffer (try <code>ffplay -f h264</code>). Audio stream is PCM16, 2 channels, and sample-rate = 48000Hz. Official code uses buffer size 0x32000 for video, 0x1000 for audio, and multiple threads to read out both streams at the same time.
+This will block until data is available. This will hang if there is no game title running which has video capture enabled.
 = IOffscreenRecorder =