 Mike Brady
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caf06c5aba
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Add the idea of a preflight message to tell the backend that frames will be coming...
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2019-01-07 17:34:50 +00:00 |
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Mike Brady
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4613ee6bcb
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Make buffer size threashold 100 ms instead of 50 ms. Remove some surplus snd_pcm_prepare calls.
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2019-01-07 16:00:58 +00:00 |
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Mike Brady
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0e37f7e78d
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Only look for snd_pcm_status_get_driver_htstamp is alsa version 1.1 or later...
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2019-01-04 21:52:36 +00:00 |
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Mike Brady
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6b42abab72
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Use driver htstamp rather than regular one. Use untimed_delay so that a regualr delay sets the standoff timer for silence.
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2019-01-04 20:57:18 +00:00 |
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Mike Brady
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48043a81cc
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Move stall threshold calculation to init from start, duh.
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2019-01-04 18:17:30 +00:00 |
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Mike Brady
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80f15e1f57
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clang format
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2019-01-04 17:26:55 +00:00 |
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Mike Brady
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9552b278b7
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remove some debugging code from delay().
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2019-01-04 17:26:00 +00:00 |
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Mike Brady
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7496364aaa
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continue to change delay() and play() to reflect use of snd_pcm_recover _after_ a XRUN has occurred -- fix rate calculations etc.
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2019-01-04 17:20:15 +00:00 |
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Mike Brady
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459dd51a31
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Use snd_pcm_recover only _after_ an XRUN or suspend has happened. Don't use it to remove one -- it doesn't work.
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2019-01-04 13:50:14 +00:00 |
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Mike Brady
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8e5733e6ae
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Check before using snd_pcm_prepare in delay()
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2019-01-04 11:29:18 +00:00 |
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Mike Brady
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41c8c8b9a1
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Strengthen the ability to recover from an XRUN by putting in a call to snd_pcm_prepare first.
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2019-01-03 10:19:44 +00:00 |
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Mike Brady
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15729ebcd4
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Fix trivial error in a debug message.
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2019-01-02 22:40:48 +00:00 |
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Mike Brady
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8d8b8c05f6
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new play(), delay(), delay_prep_and_status() routines in place and working, but with the old stuff taken out.
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2019-01-02 19:54:12 +00:00 |
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Mike Brady
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59d26918f6
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new play(), delay(), delay_prep_and_status() routines in place and working, but with the old stuff still around.
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2019-01-02 19:49:15 +00:00 |
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Mike Brady
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6f8b35d121
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Try out a new alsa delay routine. Could be very buggy!
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2019-01-02 14:43:25 +00:00 |
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Mike Brady
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fe857037de
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If output is stalled, don't write any more frames to the output device.
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2018-12-31 17:46:05 +00:00 |
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Mike Brady
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fc08572631
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Modify my_snd_pcm_delay but don't test it yet!
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2018-12-29 09:34:10 +00:00 |
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Mike Brady
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919c5fe8b8
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Add some diagnostics around the state of the DAC during delays.
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2018-12-28 10:35:13 +00:00 |
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Mike Brady
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ad6c721d5a
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Format
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2018-12-27 14:04:31 +00:00 |
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Mike Brady
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1828545602
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Account for duration of samples to be played and use the untimed_play when calculating silence-filling backoff period.
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2018-12-27 14:01:32 +00:00 |
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Mike Brady
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284cb9d3fb
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Return genuine error codes where available in actual_open_alsa_device.
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2018-12-26 10:41:20 +00:00 |
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Mike Brady
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70cd4fe81f
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Further adjustments to the silence thread -- make the sleep time 30 ms, thus if the queue goes below 60 ms of samples, silence will be inserted unless an audio write occurred within the last 30 ms.
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2018-12-17 17:11:46 +00:00 |
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Mike Brady
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2830cdf712
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adjust minimum interval between last audio write and writing silence.
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2018-12-17 16:50:36 +00:00 |
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Mike Brady
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a96d28c4e5
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Need to use an untimed play for the silence buffer filler.
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2018-12-17 16:44:19 +00:00 |
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Mike Brady
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cb17fb263a
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Don't send silence into the alsa device within the scanner's sleep time of the last legitimate write to it. This is to stop the scanner inserting silent frames while the player is flushing fames.
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2018-12-17 16:31:03 +00:00 |
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Mike Brady
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57e9619e5b
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Don't add dither if volume control is set to max.
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2018-12-17 13:14:40 +00:00 |
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Mike Brady
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14e867a66b
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use dither if using software mixer (i.e. no hardware mixer and not ignoring the volume control) -- fix a mistake in accounting for the ignore_volume_control setting.
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2018-12-17 11:30:23 +00:00 |
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Mike Brady
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4ba0947ddb
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Move the keep_dac_busy in to a configuration setting. Always start the keep_dac_busy thread and check if the keep_dac_busy is set. Don't dither is ignore volume control is set.
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2018-12-15 15:36:44 +00:00 |
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Mike Brady
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7708ee3cdf
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Bring in the "disable_standby_mode" feature on alsa to stop some DACs making popping noises. Fix dither generation.
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2018-12-14 15:28:32 +00:00 |
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Mike Brady
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4046c0e73d
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Fix dither, add dither to silences during lead-in, interpolatied frames and keeping out of standby, only if the output device doesn't use a mixer. Check configuration at initialisation.
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2018-12-14 15:07:00 +00:00 |
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Mike Brady
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5dd9fbc4fb
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Don't drop the audio during a flush -- it creates a clunk.
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2018-12-13 16:59:18 +00:00 |
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Mike Brady
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7cc434e989
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Experimentally, add the ability to prevent the DAC making popping noises by feeding it with silence instead of allowing it to stop.
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2018-12-13 14:47:52 +00:00 |
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Mike Brady
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dad5e28208
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Stay with the standard delay call for the present time.
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2018-12-11 16:25:53 +00:00 |
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Mike Brady
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45ce909214
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Tidy up some debug messages and warnings, remove old diagnostic codes and settings.
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2018-12-11 10:56:36 +00:00 |
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Mike Brady
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9d5ff22f2d
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Connect up the stall response to the external command calling -- add a single argument to the unfixable error call.
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2018-12-10 22:28:52 +00:00 |
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Mike Brady
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079db2eba8
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Set stall threshold to 200 ms.
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2018-12-10 12:38:48 +00:00 |
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Mike Brady
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46a13dce40
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Add stall detection to the alsa subsystem.
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2018-12-10 10:50:08 +00:00 |
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Mike Brady
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ea11547095
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add delay to debug output.
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2018-12-09 08:58:47 +00:00 |
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Mike Brady
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7c42050847
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Get timings of play / flush / delay calls.
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2018-12-09 08:45:10 +00:00 |
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Mike Brady
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df61f80607
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Time opening of the device
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2018-12-08 22:30:34 +00:00 |
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Mike Brady
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e5452e5172
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Make the idle timeout on the RTSP link the same as the overall timeout -- 30 seconds is a bit short. Add checks to the alsa interface timing -- 15 ms to write a packet of frames, 1 ms to ask for the delay.
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2018-12-08 14:12:33 +00:00 |
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Mike Brady
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50700b46a5
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Add timing to writing to the DAC
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2018-12-08 12:58:01 +00:00 |
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Mike Brady
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53c17276db
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Continue to use the ordinary snd_pcm_delay call.
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2018-12-06 15:39:19 +00:00 |
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Mike Brady
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277d401d24
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Ensure watchdog always starts with the starting time of the thread. Add watchdog bark count. On the third bark, execute an unfixable error script if present.
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2018-12-04 17:25:15 +00:00 |
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Mike Brady
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9ddef563ad
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Shorten the delays to 100 ms
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2018-12-04 08:56:29 +00:00 |
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Mike Brady
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60315b63c9
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Try to ensure that any alsa command sequences are uncancellable. Leave a little time afterwards where possible.
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2018-12-03 17:00:12 +00:00 |
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Mike Brady
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e49707e051
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Ensure no pthread cancellation can occur during an ALSA-related call.
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2018-12-03 12:44:57 +00:00 |
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Mike Brady
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2737222b0b
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Fix a non-initialisation of parameters if no h/w mixer used. Add a few diagnostics, tidy up initial diagnostic message, add verbosity level and whether mixer used.
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2018-12-01 16:52:23 +00:00 |
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Mike Brady
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22f3e3e318
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Move watchdog to cover connection from start, not just from start of play. Start investigating UDP port allocation. Tidy up handling or RTSP write errors -- remove the pselect code from before a write.
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2018-11-28 17:18:03 +00:00 |
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Mike Brady
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b7ee743a0e
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Quieten a few debug messages.
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2018-11-27 17:44:45 +00:00 |
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