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/Documentation/ABI/testing/
Dconfigfs-usb-gadget-uac223 p_chmask playback channel mask
24 p_srate list of playback sampling rates (comma-separated)
25 p_ssize playback sample size (bytes)
26 p_hs_bint playback bInterval for HS/SS (1-4: fixed, 0: auto)
27 p_mute_present playback mute control enable
28 p_volume_present playback volume control enable
29 p_volume_min playback volume control min value
31 p_volume_max playback volume control max value
33 p_volume_res playback volume control resolution
36 for both capture and playback
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Dconfigfs-usb-gadget-uac119 p_chmask playback channel mask
20 p_srate list of playback sampling rates (comma-separated)
21 p_ssize playback sample size (bytes)
22 p_mute_present playback mute control enable
23 p_volume_present playback volume control enable
24 p_volume_min playback volume control min value
26 p_volume_max playback volume control max value
28 p_volume_res playback volume control resolution
31 for both capture and playback
33 p_it_name playback input terminal name
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Dsysfs-driver-hid-corsair5 Description: Get/set the current playback mode. "SW" for software mode
7 hardware playback mode where the G-keys play their macro
/Documentation/sound/designs/
Dtimestamping.rst43 ascii-art, this could be represented as follows (for the playback
58 The analog time is taken at the last stage of the playback, as close
89 the results will default to the HDAudio wall clock for playback
152 playback: systime: 341121338 nsec, audio time 342000000 nsec, systime delta -878662
153 playback: systime: 426236663 nsec, audio time 427187500 nsec, systime delta -950837
154 playback: systime: 597080580 nsec, audio time 598000000 nsec, systime delta -919420
155 playback: systime: 682059782 nsec, audio time 683020833 nsec, systime delta -961051
156 playback: systime: 852896415 nsec, audio time 853854166 nsec, systime delta -957751
157 playback: systime: 937903344 nsec, audio time 938854166 nsec, systime delta -950822
163 playback: systime: 341053347 nsec, audio time 341062500 nsec, systime delta -9153
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Dcontrol-names.rst16 Playback one direction
18 Bypass Playback one direction
80 Digital Loopback playback -> capture loopback -
104 [Analogue|Digital] Playback Switch aka output gain switch
105 [Analogue|Digital] Playback Volume aka output gain volume
132 IEC958 [...] [Playback|Capture] Switch turn on/off the IEC958 interface
133 IEC958 [...] [Playback|Capture] Volume digital volume control
134 IEC958 [...] [Playback|Capture] Default default or global value - read/write
135 IEC958 [...] [Playback|Capture] Mask consumer and professional mask
136 IEC958 [...] [Playback|Capture] Con Mask consumer mask
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Doss-emulation.rst132 playback and ``c`` for capture, respectively. Note that this proc file
158 write also partial fragments (affects playback only)
162 The ``disable`` option is useful when one stream direction (playback or
167 For example, to playback the first PCM device without plugins for
173 While quake wants only playback, you may append the second command
228 from "PCM Playback Volume" and "PCM Playback Switch" controls for the
229 playback direction and from "PCM Capture Volume" and "PCM Capture
252 SOUND_MIXER_OGAIN Playback 0
267 control. In fact, the controls with ``XXX [Playback|Capture]
287 proc file. For example, to map "Wave Playback" to the PCM volume,
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/Documentation/sound/cards/
Demu-mixer.rst22 In particular, I got recording glitches during simultaneous playback on an
38 Its multi-channel device supports 24-bit for both playback and capture,
98 name='PCM Front Playback Volume',index=0
102 samples for 5.1 playback. The result samples are forwarded to the DSP 0 & 1
103 playback channels.
105 name='PCM Surround Playback Volume',index=0
109 samples for 5.1 playback. The result samples are forwarded to the DSP 2 & 3
110 playback channels.
112 name='PCM Side Playback Volume',index=0
116 samples for 7.1 playback. The result samples are forwarded to the DSP 6 & 7
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Dcmipci.rst8 Front/Rear Multi-channel Playback
18 (hw:0,1) is assigned to the second DAC for rear playback.
26 Please note that the CM8x38 DAC doesn't support continuous playback
50 playback should be routed there as default. If not, there is a
56 The "Exchange DAC" switch is used to exchange front and rear playback
60 4/6 Multi-Channel Playback
63 The recent CM8738 chips support for the 4/6 multi-channel playback
72 formats, the 4/6-ch playback supports only the same condition for all
73 channels. Since the multi-channel playback mode uses both DACs, you
82 For programming the 4/6 channel playback, you need to specify the PCM
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Daudigy-mixer.rst47 name='PCM Front Playback Volume',index=0
51 samples for 5.1 playback. The result samples are forwarded to the front speakers.
53 name='PCM Surround Playback Volume',index=0
57 samples for 5.1 playback. The result samples are forwarded to the surround (rear)
60 name='PCM Side Playback Volume',index=0
64 samples for 7.1 playback. The result samples are forwarded to the side speakers.
66 name='PCM Center Playback Volume',index=0
69 ALSA uses accumulator 6 for center PCM samples for 5.1 playback. The result
72 name='PCM LFE Playback Volume',index=0
75 ALSA uses accumulator 7 for LFE PCM samples for 5.1 playback. The result
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Dpcmtest.rst15 * Simulate both capture and playback processes
17 * Inject delays into the playback and capturing processes
23 Also, this driver can check the playback stream for containing the predefined pattern,
100 Playback test
103 This driver can be also used for the playback functionality testing - every time you
104 write the playback data to the 'pcmtest' PCM device and close it, the driver checks the
106 debugfs file for each channel). If the playback buffer content represents the looped
Dsb-live-mixer.rst62 ``name='Wave Playback Volume',index=0``
68 ``name='Wave Surround Playback Volume',index=0``
75 ``name='Wave Center Playback Volume',index=0``
82 ``name='Wave LFE Playback Volume',index=0``
96 ``name='Synth Playback Volume',index=0``
109 ``name='Surround Playback Volume',index=0``
123 ``name='Center Playback Volume',index=0``
129 ``name='LFE Playback Volume',index=0``
135 ``name='AC97 Playback Volume',index=0``
156 ``name='IEC958 TTL Playback Volume',index=0``
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Dmixart.rst30 stereo analog capture 'pcm0c' and 1 stereo analog playback 'pcm0p' device.
39 Playback section in VERSION 0.1.0
41 For instance the playback devices are configured to have max. 4
55 analog volume control of playback and capture PCM.
/Documentation/sound/soc/
Dpops-clicks.rst16 Minimising Playback Pops and Clicks
19 Playback pops in portable audio subsystems cannot be completely eliminated
21 suppression. Pops can be reduced within playback by powering the audio
39 playback in that components are powered in a sequence depending upon stream
50 An unwanted zipper noise can occur within the audio playback or capture stream
Dcodec-to-codec.rst94 In dapm core a route is created between cpu_dai playback widget
95 and codec_dai capture widget for playback path and vice-versa is
98 a sink or source widget corresponding to playback and capture path
105 Make sure to name your corresponding cpu and codec playback and capture
106 dai names ending with "Playback" and "Capture" respectively as dapm core
Ddapm.rst16 switching decisions based upon any audio stream (capture/playback)
65 Enabled and disabled when stream playback/capture is started and
165 e.g. stream widgets for HiFi playback and capture
168 SND_SOC_DAPM_DAC("HiFi DAC", "HiFi Playback", REG, 3, 1),
174 SND_SOC_DAPM_AIF_IN("AIF1RX", "AIF1 Playback", 0, SND_SOC_NOPM, 0, 0),
196 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
312 2. DAC (HiFi playback)
322 {"Output Mixer", "HiFi Playback Switch", "DAC"},
329 * ``Output Mixer`` is connected to the ``DAC`` via the ``HiFi Playback Switch``.
Dcodec.rst6 the codec, FM, MODEM, BT or external DSP to provide audio capture and playback.
50 .playback = {
51 .stream_name = "Playback",
86 xname = Control name e.g. "Playback Volume"
/Documentation/userspace-api/media/v4l/
Dvidioc-decoder-cmd.rst92 - Playback speed and direction. The playback speed is defined as
93 ``speed``/1000 of the normal speed. So 1000 is normal playback.
94 Negative numbers denote reverse playback, so -1000 does reverse
95 playback at normal speed. Speeds -1, 0 and 1 have special
96 meanings: speed 0 is shorthand for 1000 (normal playback). A speed
106 usually the case for reverse playback: the decoder needs full
108 reverse playback the application must feed the decoder the last
118 - Stop playback at this ``pts`` or immediately if the playback is
146 this command will just change the playback speed. That means that
/Documentation/devicetree/bindings/sound/
Dxlnx,i2s.txt3 The IP supports I2S based playback/capture audio
6 - compatible: "xlnx,i2s-transmitter-1.0" for playback and
9 Required property common to both I2S playback and capture:
Dfsl,ssi.yaml13 Notes on fsl,playback-dma and fsl,capture-dma
14 On SOCs that have an SSI, specific DMA channels are hard-wired for playback
16 playback and DMA channel 1 for capture. SSI2 must use DMA channel 2 for
17 playback and DMA channel 3 for capture. The developer can choose which
22 "fsl,playback-dma" and "fsl,capture-dma" must be marked as compatible with
150 playback and capture to use different sample sizes and
156 fsl,playback-dma:
159 playback of audio. This is typically dictated by SOC
Drockchip-i2s.yaml96 rockchip,playback-channels:
100 Max playback channels, if not set, 8 channels default.
107 playback/capture.
138 rockchip,playback-channels = <8>;
Dsimple-card.yaml430 simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
460 simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
461 "ak4642 Playback", "DAI1 Playback";
497 "pcm3168a Playback", "DAI1 Playback",
498 "pcm3168a Playback", "DAI2 Playback",
499 "pcm3168a Playback", "DAI3 Playback",
500 "pcm3168a Playback", "DAI4 Playback";
Dsamsung-i2s.yaml26 playback, stereo channel capture, secondary FIFO using internal
28 source and 7.1 channel TDM support for playback; TDM (Time division
41 tesla,fsd-i2s: for 8/16/24bit stereo channel I2S for playback and
45 for playback and capture TDM (Time division multiplexing) to allow
Dgoogle,sc7280-herobrine.yaml125 link-name = "WCD Playback";
148 link-name = "MI2S Playback";
172 link-name = "DP Playback";
/Documentation/devicetree/bindings/dma/
Dloongson,ls1b-apbdma.yaml14 peripherals such as NAND, audio playback and capture.
32 - description: Audio playback interrupt
/Documentation/usb/
Dgadget-testing.rst717 fn_play playback pcm device file name
756 p_chmask playback channel mask
757 p_srate list of playback sampling rates (comma-separated)
758 p_ssize playback sample size (bytes)
759 p_mute_present playback mute control enable
760 p_volume_present playback volume control enable
761 p_volume_min playback volume control min value (in 1/256 dB)
762 p_volume_max playback volume control max value (in 1/256 dB)
763 p_volume_res playback volume control resolution (in 1/256 dB)
764 p_hs_bint playback bInterval for HS/SS (1-4: fixed, 0: auto)
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