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/Linux-v4.19/scripts/
Dbpf_helpers_doc.py46 capture = proto_re.match(self.proto)
47 res['ret_type'] = capture.group(1)
48 res['ret_star'] = capture.group(2)
49 res['name'] = capture.group(3)
52 args = capture.group(4).split(', ')
54 capture = arg_re.match(a)
56 'type' : capture.group(1),
57 'star' : capture.group(6),
58 'name' : capture.group(7)
91 capture = p.match(self.line)
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/Linux-v4.19/drivers/staging/vc04_services/bcm2835-camera/
Dbcm2835-camera.c237 if (!dev->capture.port) { in queue_setup()
243 size = dev->capture.port->current_buffer.size; in queue_setup()
250 if (*nbuffers < dev->capture.port->minimum_buffer.num) in queue_setup()
251 *nbuffers = dev->capture.port->minimum_buffer.num; in queue_setup()
253 dev->capture.port->current_buffer.num = *nbuffers; in queue_setup()
292 if (!dev->capture.port || !dev->capture.fmt) in buffer_prepare()
295 size = dev->capture.stride * dev->capture.height; in buffer_prepare()
319 return dev->capture.camera_port == in is_capturing()
351 } else if (dev->capture.frame_count) { in buffer_cb()
357 dev->capture.camera_port, in buffer_cb()
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/Linux-v4.19/Documentation/kdump/
Dkdump.txt11 Kdump uses kexec to quickly boot to a dump-capture kernel whenever a
14 the reboot and is accessible to the dump-capture kernel.
24 the dump-capture kernel. This ensures that ongoing Direct Memory Access
25 (DMA) from the system kernel does not corrupt the dump-capture kernel.
26 The kexec -p command loads the dump-capture kernel into this reserved
31 region just before rebooting into the dump-capture kernel.
45 passed to the dump-capture kernel through the elfcorehdr= boot
50 With the dump-capture kernel, you can access the memory image through
105 Build the system and dump-capture kernels
109 1) Build a separate custom dump-capture kernel for capturing the
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/Linux-v4.19/Documentation/devicetree/bindings/sound/
Dmt8173-rt5650.txt10 - codec-capture : the subnode of rt5650 codec capture
11 Required codec-capture subnode properties:
12 - sound-dai: audio codec dai name on capture path
13 <&rt5650 0> : Default setting. Connect rt5650 I2S1 for capture. (dai_name = rt5645-aif1)
14 <&rt5650 1> : Connect rt5650 I2S2 for capture. (dai_name = rt5645-aif2)
27 codec-capture {
Dfsl,ssi.txt51 playback and capture to use different sample sizes and
60 - fsl,capture-dma: Phandle to a node for the DMA channel to use for
61 capture (recording) of audio. This is typically dictated
72 Notes on fsl,playback-dma and fsl,capture-dma:
75 and capture. On the MPC8610, for example, SSI1 must use DMA channel 0 for
76 playback and DMA channel 1 for capture. SSI2 must use DMA channel 2 for
77 playback and DMA channel 3 for capture. The developer can choose which
82 "fsl,playback-dma" and "fsl,capture-dma" must be marked as compatible with
/Linux-v4.19/sound/soc/fsl/
Dmpc5200_dma.c43 if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR)) in psc_dma_status_irq()
183 if (psc_dma->capture.active) in psc_dma_trigger()
224 s = &psc_dma->capture; in psc_dma_open()
250 s = &psc_dma->capture; in psc_dma_close()
255 !psc_dma->capture.active) { in psc_dma_close()
274 s = &psc_dma->capture; in psc_dma_pointer()
414 psc_dma->capture.psc_dma = psc_dma; in mpc5200_audio_dma_create()
420 psc_dma->capture.bcom_task = in mpc5200_audio_dma_create()
424 if (!psc_dma->capture.bcom_task || in mpc5200_audio_dma_create()
458 psc_dma->capture.irq = in mpc5200_audio_dma_create()
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/Linux-v4.19/Documentation/ABI/testing/
Dconfigfs-usb-gadget-uac17 c_chmask - capture channel mask
8 c_srate - capture sampling rate
9 c_ssize - capture sample size (bytes)
14 for both capture and playback
Dconfigfs-usb-gadget-uac27 c_chmask - capture channel mask
8 c_srate - capture sampling rate
9 c_ssize - capture sample size (bytes)
/Linux-v4.19/Documentation/media/uapi/v4l/
Ddev-capture.rst9 Video capture devices sample an analog video signal and store the
10 digitized images in memory. Today nearly all devices can capture at full
12 capture process and move images from the driver into user space.
14 Conventionally V4L2 video capture devices are accessed through character
26 Devices supporting the video capture interface set the
32 (``V4L2_CAP_VIDEO_OVERLAY``) and the :ref:`raw VBI capture <raw-vbi>`
41 Video capture devices shall support :ref:`audio input <audio>`,
46 capture devices.
52 The result of a capture operation is determined by cropping and image
54 capture, the latter how images are stored in memory, i. e. in RGB or YUV
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Ddev-meta.rst11 or frame capture parameters supplied by the image source. This interface is
14 The metadata interface is implemented on video capture device nodes. The device
15 can be dedicated to metadata or can implement both video and metadata capture
24 ioctl. That flag means the device can capture metadata to memory.
32 The metadata device uses the :ref:`format` ioctls to select the capture format.
Dvidioc-g-fmt.rst45 type. For example video capture devices use
49 the respective member of the ``fmt`` union. In case of video capture
107 capture and output devices.
112 capture and output devices that support the
122 - Raw VBI capture or output parameters. This is discussed in more
123 detail in :ref:`raw-vbi`. Used by raw VBI capture and output
128 - Sliced VBI capture or output parameters. See :ref:`sliced` for
129 details. Used by sliced VBI capture and output devices.
134 capture and output devices.
/Linux-v4.19/drivers/media/usb/stk1160/
DKconfig2 tristate "STK1160 USB video capture support"
6 This is a video4linux driver for STK1160 based video capture devices.
11 This driver only provides support for video capture. For audio
12 capture, you need to select the snd-usb-audio driver (i.e.
/Linux-v4.19/drivers/media/platform/davinci/
DKconfig18 tristate "TI DaVinci VPIF video capture driver"
25 Enables Davinci VPIF module used for capture devices.
26 This module is used for capture on TI DM6467/DA850/OMAPL138
33 tristate "TI DM6446 CCDC video capture driver"
43 video frame capture from slave decoders.
49 tristate "TI DM355 CCDC video capture driver"
59 video frame capture from a slave decoders
65 tristate "TI DM365 ISIF video capture driver"
72 configuring ISIF in VPFE to capture Raw Bayer RGB data from
/Linux-v4.19/sound/soc/sh/rcar/
Dcore.c190 io = &rdai->capture; in rsnd_mod_interrupt()
611 return &rdai->capture; in rsnd_rdai_to_io()
803 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture; in __rsnd_soc_hw_rule_rate()
841 struct rsnd_dai_stream *io = is_play ? &rdai->playback : &rdai->capture; in __rsnd_soc_hw_rule_channels()
984 struct device_node *capture) in rsnd_parse_connect_common() argument
999 if (np == capture) in rsnd_parse_connect_common()
1000 rsnd_dai_connect(mod, &rdai->capture, mod->type); in rsnd_parse_connect_common()
1047 struct device_node *playback, *capture; in __rsnd_dai_probe() local
1058 io_capture = &rdai->capture; in __rsnd_dai_probe()
1074 snprintf(rdai->capture.name, RSND_DAI_NAME_SIZE, in __rsnd_dai_probe()
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/Linux-v4.19/drivers/pwm/
Dpwm-stm32.c29 u32 capture[4] ____cacheline_aligned; /* DMA'able buffer */ member
130 ret = stm32_timers_dma_burst_read(parent, priv->capture, dma_id, ccr, 2, in stm32_pwm_raw_capture()
136 if (priv->capture[0] <= priv->capture[2]) in stm32_pwm_raw_capture()
137 *raw_prd = priv->capture[2] - priv->capture[0]; in stm32_pwm_raw_capture()
139 *raw_prd = priv->max_arr - priv->capture[0] + priv->capture[2]; in stm32_pwm_raw_capture()
144 else if (priv->capture[0] <= priv->capture[3]) in stm32_pwm_raw_capture()
145 *raw_dty = priv->capture[3] - priv->capture[0]; in stm32_pwm_raw_capture()
147 *raw_dty = priv->max_arr - priv->capture[0] + priv->capture[3]; in stm32_pwm_raw_capture()
487 .capture = IS_ENABLED(CONFIG_DMA_ENGINE) ? stm32_pwm_capture : NULL,
/Linux-v4.19/drivers/staging/media/zoran/
DKconfig6 Say Y for support for MJPEG capture cards based on the Zoran
21 Support for the Pinnacle/Miro DC30(+) MJPEG capture/playback
39 Support for the Iomega Buz MJPEG capture/playback card.
47 Support for the Pinnacle/Miro DC10(+) MJPEG capture/playback
56 Support for the Linux Media Labs LML33 MJPEG capture/playback
65 support for the Linux Media Labs LML33R10 MJPEG capture/playback
/Linux-v4.19/Documentation/media/v4l-drivers/
Dimx.rst8 handles the flow of image frames to and from capture devices and
11 For image capture, the IPU contains the following internal subunits:
21 memory. Various dedicated DMA channels exist for both video capture and
29 The CSI is the backend capture unit that interfaces directly with
62 outside the IPU that are also involved in video capture on i.MX:
79 that correspond to the hardware video capture pipelines supported in
85 video capture interfaces using independent entities.
173 source pad is routed to a capture device node, with a node name of the
174 format "ipuX_csiY capture".
179 If the sink pad is receiving YUV, the output at the capture device can
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Dfimc.rst25 - camera parallel interface capture (ITU-R.BT601/565);
26 - camera serial interface capture (MIPI-CSI2);
45 - camera capture video device driver
46 drivers/media/platform/exynos4-is/fimc-capture.c
74 viewfinder and still capture setup).
84 capture video node operation on same FIMC instance is not allowed. The driver
94 At the capture and mem-to-mem video nodes only the multi-planar API is
97 Camera capture subdevs
111 In typical use case there could be a following capture pipeline configuration:
119 The sysfs entry allows to instruct the capture node driver not to configure
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Divtv.rst24 Open Source driver implementation for video capture cards based on the
30 * Hardware mpeg2 capture of broadcast video (and sound) via the tuner or
32 * Hardware mpeg2 capture of FM radio where hardware support exists
95 /dev/video0 is listed as the 'base' encoding capture device so we have:
97 - /dev/video0 is the encoding capture device for the first card (card 0)
98 - /dev/video1 is the encoding capture device for the second card (card 1)
99 - /dev/video2 is the encoding capture device for the third card (card 2)
103 the card number to the base device number'. If you have other capture
112 The encoding capture device(s).
141 The raw audio capture device(s).
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Dpxa_camera.rst24 capture. The new buffers are "appended" at the tail of the DMA chain, and
41 | STOP | | Wait for capture start |
48 |capture list empty / | Q | | DQ | | QCI Irq EOF |
57 | | capture list / running | DMA Irq End | not |
89 - first buffer queued for capture
90 Once a first buffer is queued for capture, the QCI is started, but data
93 - capture of one videobuffer
168 - Videobuffer3 capture is not scheduled on DMA chain (as it stopped !!!)
183 pcdev->capture list. If that's the case, the capture will be restarted,
Dmeye.rst55 gbuffers: number of capture buffers, default is 2 (32 max)
57 gbufsize: size of each capture buffer, default is 614400
79 for display and uncompressed video capture:
96 agc, video framerate), the shapshot and the MJPEG capture facilities.
110 Queue a buffer for capture (the buffers must have been
113 buffer number to queue (or -1 to end capture). The first
114 call to MEYEIOC_QBUF_CAPT starts the streaming capture.
/Linux-v4.19/sound/drivers/vx/
Dvx_mixer.c217 static int vx_adjust_audio_level(struct vx_core *chip, int audio, int capture, in vx_adjust_audio_level() argument
226 if (capture) in vx_adjust_audio_level()
256 static int vx_read_audio_level(struct vx_core *chip, int audio, int capture,
264 if (capture)
315 static int vx_set_audio_gain(struct vx_core *chip, int audio, int capture, int level) in vx_set_audio_gain() argument
322 chip->audio_gain[capture][audio] = level; in vx_set_audio_gain()
323 return vx_adjust_audio_level(chip, audio, capture, &info); in vx_set_audio_gain()
375 static int vx_get_audio_vu_meter(struct vx_core *chip, int audio, int capture, struct vx_vu_meter *… in vx_get_audio_vu_meter() argument
385 if (capture) in vx_get_audio_vu_meter()
585 int capture = (kcontrol->private_value >> 8) & 1; in vx_audio_gain_get() local
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/Linux-v4.19/sound/soc/sh/
Dsiu_dai.c58 struct format_flag capture; member
71 .capture = {
85 .capture = {
134 siu_write32(base + SIU_SBDVCB, port_info->capture.volume); in siu_dai_start()
370 vol = port_info->capture.volume; in siu_dai_get_volume()
414 cur_vol = port_info->capture.volume; in siu_dai_put_volume()
416 port_info->capture.volume = new_vol; in siu_dai_put_volume()
463 (*port_info)->capture.volume = DFLT_VOLUME_LEVEL; in siu_init_port()
532 if (WARN_ON(port_info->playback.rw_flg || port_info->capture.rw_flg)) in siu_dai_shutdown()
558 siu_stream = &port_info->capture; in siu_dai_prepare()
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Dsiu_pcm.c155 struct siu_stream *siu_stream = &port_info->capture; in siu_pcm_rd_set()
243 struct siu_stream *siu_stream = &port_info->capture; in siu_pcm_stmread_start()
265 struct siu_stream *siu_stream = &port_info->capture; in siu_pcm_stmread_stop()
310 siu_stream = &port_info->capture; in siu_pcm_hw_free()
352 siu_stream = &port_info->capture; in siu_pcm_open()
382 siu_stream = &port_info->capture; in siu_pcm_close()
404 siu_stream = &port_info->capture; in siu_pcm_prepare()
493 siu_stream = &port_info->capture; in siu_pcm_pointer_dma()
559 tasklet_init(&(*port_info)->capture.tasklet, siu_io_tasklet, in siu_pcm_new()
560 (unsigned long)&(*port_info)->capture); in siu_pcm_new()
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/Linux-v4.19/drivers/media/v4l2-core/
Dv4l2-common.c411 a->parm.capture.readbuffers = 2; in v4l2_g_parm_cap()
413 a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; in v4l2_g_parm_cap()
416 a->parm.capture.timeperframe = ival.interval; in v4l2_g_parm_cap()
425 .interval = a->parm.capture.timeperframe in v4l2_s_parm_cap()
435 a->parm.capture.readbuffers = 2; in v4l2_s_parm_cap()
437 a->parm.capture.readbuffers = 0; in v4l2_s_parm_cap()
440 a->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; in v4l2_s_parm_cap()
443 a->parm.capture.timeperframe = ival.interval; in v4l2_s_parm_cap()

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