| /linux/Documentation/userspace-api/media/v4l/ |
| H A D | dev-stateless-decoder.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 Memory-to-memory Stateless Video Decoder Interface
11 between processed frames. This means that each frame is decoded independently
19 This section describes how user-space ("the client") is expected to communicate
25 Stateless decoders make use of the :ref:`media-request-api`. A stateless
31 frame may be the result of several decode requests (for instance, H.264 streams
32 with multiple slices per frame). Decoders that support such formats must also
46 codec-specific capability controls (such as H.264 profiles) to the set
56 formats may depend on the value of some codec-dependent controls.
111 frame buffer resolution for the decoded frames.
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| H A D | ext-ctrls-codec.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _codec-controls:
25 .. _mpeg-control-id:
28 -----------------
36 .. _v4l2-mpeg-stream-type:
41 enum v4l2_mpeg_stream_type -
42 The MPEG-1, -2 or -4 output stream type. One cannot assume anything
49 .. flat-table::
50 :header-rows: 0
51 :stub-columns: 0
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| H A D | func-read.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
4 .. _func-read:
13 v4l2-read - Read from a V4L2 device
18 .. code-block:: c
34 Max number of bytes to read
45 :c:func:`read()` call will provide at most one frame (two fields)
65 reading, or the capture rate must fall below the nominal frame rate of
72 previously, not read frame, and returns the frame being received at the
76 :c:func:`read()` call. The frame being received at :c:func:`read()`
77 time is discarded, returning the following frame instead. Again this
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| H A D | vidioc-g-parm.rst | 1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
13 VIDIOC_G_PARM - VIDIOC_S_PARM - Get or set streaming parameters
38 Applications can request a different frame interval. The capture or
39 output device will be reconfigured to support the requested frame
41 repeat frames to achieve the requested frame interval.
44 frame interval that is typically embedded in the encoded video stream.
46 Changing the frame interval shall never change the format. Changing the
47 format, on the other hand, may change the frame interval.
49 Further these ioctls can be used to determine the number of buffers used
63 .. flat-table:: struct v4l2_streamparm
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| /linux/include/uapi/linux/ |
| H A D | v4l2-subdev.h | 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
17 #include <linux/v4l2-common.h>
18 #include <linux/v4l2-mediabus.h>
21 * enum v4l2_subdev_format_whence - Media bus format type
31 * struct v4l2_subdev_format - Pad-level media bus format
33 * @pad: pad number, as reported by the media API
34 * @format: media bus format (format code and frame size)
35 * @stream: stream number, defined in subdev routing
47 * struct v4l2_subdev_crop - Pad-level crop settings
49 * @pad: pad number, as reported by the media API
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| /linux/drivers/staging/media/atomisp/pci/ |
| H A D | ia_css_stream_public.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
29 IA_CSS_INPUT_MODE_FIFO, /** data from input-fifo */
30 IA_CSS_INPUT_MODE_TPG, /** data from test-pattern generator */
31 IA_CSS_INPUT_MODE_PRBS, /** data from pseudo-random bit stream */
32 IA_CSS_INPUT_MODE_MEMORY, /** data from a frame in memory */
39 unsigned int size_mem_words; /** The frame size in the system memory
43 unsigned int nof_mipi_buffers; /** The number of MIPI buffers required for this
62 int linked_isys_stream_id; /** default value is -1, other value means
106 unsigned int pixels_per_clock; /** Number of pixels per clock, which can be
111 unsigned int init_num_cont_raw_buf; /** initial number of raw buffers to
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| /linux/drivers/usb/dwc2/ |
| H A D | hcd.h | 1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
3 * hcd.h - DesignWare HS OTG Controller host-mode declarations
5 * Copyright (C) 2004-2013 Synopsys, Inc.
24 * struct dwc2_host_chan - Software host channel descriptor
26 * @hc_num: Host channel number, used for register address lookup
31 * - USB_SPEED_LOW
32 * - USB_SPEED_FULL
33 * - USB_SPEED_HIGH
35 * - USB_ENDPOINT_XFER_CONTROL: 0
36 * - USB_ENDPOINT_XFER_ISOC: 1
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| /linux/drivers/net/ethernet/freescale/dpaa2/ |
| H A D | dpni.h | 1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2 /* Copyright 2013-2016 Freescale Semiconductor Inc.
20 * DPNI_MAX_TC - Maximum number of traffic classes
24 * DPNI_MAX_DPBP - Maximum number of buffer pools per DPNI
29 * DPNI_ALL_TCS - All traffic classes considered; see dpni_set_queue()
31 #define DPNI_ALL_TCS (u8)(-1)
33 * DPNI_ALL_TC_FLOWS - All flows within traffic class considered; see
36 #define DPNI_ALL_TC_FLOWS (u16)(-1)
38 * DPNI_NEW_FLOW_ID - Generate new flow ID; see dpni_set_queue()
40 #define DPNI_NEW_FLOW_ID (u16)(-1)
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| H A D | dpaa2-eth.h | 1 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
2 /* Copyright 2014-2016 Freescale Semiconductor Inc.
3 * Copyright 2016-2022 NXP
17 #include <soc/fsl/dpaa2-io.h>
18 #include <soc/fsl/dpaa2-fd.h>
20 #include "dpni-cmd.h"
22 #include "dpaa2-eth-trace.h"
23 #include "dpaa2-eth-debugfs.h"
24 #include "dpaa2-mac.h"
30 /* Maximum number of scatter-gather entries in an ingress frame,
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| H A D | dpsw.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright 2014-2016 Freescale Semiconductor Inc.
4 * Copyright 2017-2021 NXP
11 /* Data Path L2-Switch API
30 * DPSW_OPT_FLOODING_DIS - Flooding was disabled at device create
34 * DPSW_OPT_MULTICAST_DIS - Multicast was disabled at device create
38 * DPSW_OPT_CTRL_IF_DIS - Control interface support is disabled
43 * enum dpsw_component_type - component type of a bridge
44 * @DPSW_COMPONENT_TYPE_C_VLAN: A C-VLAN component of an
46 * to process C-tagged frames
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| /linux/Documentation/fb/ |
| H A D | api.rst | 2 The Frame Buffer Device API
9 ---------------
11 This document describes the frame buffer API used by applications to interact
12 with frame buffer devices. In-kernel APIs between device drivers and the frame
15 Due to a lack of documentation in the original frame buffer API, drivers
22 ---------------
36 - FB_CAP_FOURCC
44 --------------------
46 Pixels are stored in memory in hardware-dependent formats. Applications need
48 frame buffer memory in the format expected by the hardware.
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| /linux/Documentation/devicetree/bindings/timer/ |
| H A D | arm,arch_timer_mmio.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marc Zyngier <marc.zyngier@arm.com>
11 - Mark Rutland <mark.rutland@arm.com>
15 frames with a physical and optional virtual timer per frame.
22 - enum:
23 - arm,armv7-timer-mem
27 description: The control frame base address
29 '#address-cells':
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| /linux/drivers/net/ethernet/microchip/lan966x/ |
| H A D | lan966x_ifh.h | 1 /* SPDX-License-Identifier: GPL-2.0+ */
13 /* Timestamp for frame */
22 /* Masqueraded port number for injection */
25 /* Frame length (*) */
31 /* Frame has 16 bits rtag removed compared to line data */
34 /* Frame has a redundancy tag */
37 /* Frame has been cut through forwarded (*) */
43 /* Enable OAM-related rewriting. PDU_TYPE encodes OAM type. */
46 /* PDU type. Encoding: (0-NONE, 1-Y1731_CCM, 2-MRP_TST, 3-MRP_ITST, 4-DLR_BCN,
47 * 5-DLR_ADV, 6-RTE_NULL_INJ, 7-IPV4, 8-IPV6, 9-Y1731_NON_CCM).
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| /linux/arch/sh/kernel/ |
| H A D | dwarf.c | 1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2009 Matt Fleming <matt@console-pimps.org>
10 * - DWARF64 doesn't work.
11 * - Registers with DWARF_VAL_OFFSET rules aren't handled properly.
32 /* ... with 4 registers per frame. */
52 * dwarf_frame_alloc_reg - allocate memory for a DWARF register
53 * @frame: the DWARF frame whose list of registers we insert on
54 * @reg_num: the register number
57 * dwarf_reg_pool and insert it onto the (unsorted) linked-list of
58 * dwarf registers for @frame.
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| /linux/include/uapi/linux/can/ |
| H A D | gw.h | 1 /* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
5 * Definitions for CAN frame Gateway/Router/Bridge
60 CGW_TYPE_CAN_CAN, /* CAN->CAN routing */
64 #define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1)
69 CGW_MOD_AND, /* CAN frame modification binary AND */
70 CGW_MOD_OR, /* CAN frame modification binary OR */
71 CGW_MOD_XOR, /* CAN frame modification binary XOR */
72 CGW_MOD_SET, /* CAN frame modification set alternate values */
75 CGW_HANDLED, /* number of handled CAN frames */
76 CGW_DROPPED, /* number of dropped CAN frames */
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| /linux/drivers/net/wireless/ralink/rt2x00/ |
| H A D | rt2x00queue.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
19 * DOC: Entry frame size
21 * Ralink PCI devices demand the Frame size to be a multiple of 128 bytes,
64 * @SKBDESC_IV_STRIPPED: Frame contained a IV/EIV provided by
66 * @SKBDESC_NOT_MAC80211: Frame didn't originate from mac80211,
85 * @flags: Frame flags, see &enum skb_frame_desc_flags.
86 * @desc_len: Length of the frame descriptor.
89 * @desc: Pointer to descriptor part of the frame.
91 * of the scope of the skb->data pointer.
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| H A D | rt2x00dump.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
30 * by reading the frame dump file. This file can have only a single reader.
32 * - All incoming frames (rx)
33 * - All outgoing frames (tx, including beacon and atim)
34 * - All completed frames (txdone including atim)
38 * [rt2x00dump header][hardware descriptor][ieee802.11 frame]
40 * rt2x00dump header: The description of the dumped frame, as well as
43 * the frame.
44 * ieee802.11 frame: The actual frame that was received or transmitted.
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| /linux/drivers/media/platform/st/sti/delta/ |
| H A D | delta.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
11 #include <media/v4l2-device.h>
12 #include <media/v4l2-mem2mem.h>
14 #include "delta-cfg.h"
17 * enum delta_state - state of decoding instance
46 * struct delta_streaminfo - information about stream to decode
52 * @dpb: number of frames needed to decode a single frame
54 * @crop: cropping window inside decoded frame (1920x1080@0,0
55 * inside 1920x1088 frame for ex.)
89 * struct delta_au - access unit structure.
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| /linux/net/llc/ |
| H A D | llc_pdu.c | 2 * llc_pdu.c - access to PDU internals
5 * 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
23 llc_pdu_un_hdr(skb)->ssap |= pdu_type; in llc_pdu_set_cmd_rsp()
27 * llc_pdu_set_pf_bit - sets poll/final bit in LLC header
28 * @skb: Frame to set bit in
46 pdu->ctrl_2 = (pdu->ctrl_2 & 0xFE) | bit_value; in llc_pdu_set_pf_bit()
49 pdu->ctrl_1 |= (pdu->ctrl_1 & 0xEF) | (bit_value << 4); in llc_pdu_set_pf_bit()
55 * llc_pdu_decode_pf_bit - extracs poll/final bit from LLC header
74 *pf_bit = pdu->ctrl_2 & LLC_S_PF_BIT_MASK; in llc_pdu_decode_pf_bit()
77 *pf_bit = (pdu->ctrl_1 & LLC_U_PF_BIT_MASK) >> 4; in llc_pdu_decode_pf_bit()
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| /linux/arch/alpha/kernel/ |
| H A D | core_mcpcia.c | 1 // SPDX-License-Identifier: GPL-2.0
7 * Code common to all MCbus-PCI Adaptor core logic chipsets
27 * NOTE: Herein lie back-to-back mb instructions. They are magic.
33 * BIOS32-style PCI interface:
45 * Given a bus, device, and function number, compute resulting
55 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
57 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
60 * 10:8 Function number
61 * 7:2 Register number
67 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| /linux/drivers/net/wireless/ath/ath11k/ |
| H A D | rx_desc.h | 1 /* SPDX-License-Identifier: BSD-3-Clause-Clear */
3 * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved.
16 * This MPDU passed the normal frame filter programming of rxpcu.
19 * This MPDU did not pass the regular frame filter and would
20 * have been dropped, were it not for the frame fitting into the
24 * This MPDU did not pass the regular frame filter and also did
146 * Field indicates what the reason was that this mpdu frame
161 * A-MPDU frame but a stand alone MPDU. Interior MPDU in an
162 * A-MPDU shall have both first_mpdu and last_mpdu bits set to
185 * Set if packet is not a non-QoS data frame. Only set when
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| /linux/include/drm/ |
| H A D | drm_debugfs_crc.h | 34 * struct drm_crtc_crc_entry - entry describing a frame's content
35 * @has_frame_counter: whether the source was able to provide a frame number
36 * @frame: number of the frame this CRC is about, if @has_frame_counter is true
37 * @crcs: array of values that characterize the frame
41 uint32_t frame; member
48 * struct drm_crtc_crc - data supporting CRC capture on a given CRTC
56 * @values_cnt: number of CRC values per entry, up to %DRM_MAX_CRC_NR
71 uint32_t frame, uint32_t *crcs);
74 uint32_t frame, uint32_t *crcs) in drm_crtc_add_crc_entry() argument
76 return -EINVAL; in drm_crtc_add_crc_entry()
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| /linux/include/net/libeth/ |
| H A D | tx.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* Copyright (C) 2024-2025 Intel Corporation */
14 * enum libeth_sqe_type - type of &libeth_sqe to act on Tx completion
15 * @LIBETH_SQE_EMPTY: unused/empty OR XDP_TX/XSk frame, no action required
17 * @LIBETH_SQE_SLAB: kmalloc-allocated buffer, unmap and kfree()
43 * struct libeth_sqe - represents a Send Queue Element / Tx buffer
48 * @sinfo: skb shared info of an XDP_TX frame
49 * @xdpf: XDP frame from ::ndo_xdp_xmit()
50 * @xsk: XSk Rx frame from XDP_TX action
53 * @nr_frags: number of frags in the frame this buffer belongs to
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| /linux/Documentation/driver-api/soundwire/ |
| H A D | bra.rst | 6 -----------
12 ------------
14 The SoundWire 1.x specification provides a mechanism to speed-up
20 one byte per frame with write/read commands. With a typical 48kHz
21 frame rate, only 48kB/s can be transferred.
27 (1) Each frame can only support a read or a write transfer, with a
28 10-byte overhead per frame (header and footer response).
31 in the same frame. A fragmented register space decreases the
36 Port 0, and likewise the Manager SHALL expose audio-like Ports
41 bandwidth. If there are no on-going audio transfers, the entire
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| /linux/drivers/net/ethernet/microchip/vcap/ |
| H A D | vcap_ag_api.h | 1 /* SPDX-License-Identifier: BSD-3-Clause */
6 /* This file is autogenerated by cml-utils 2023-03-13 10:16:42 +0100.
59 * Keys ending in _IS are booleans derived from frame data
60 * Keys ending in _CLS are classified frame data
63 * Used by 802.1BR Bridge Port Extension in an E-Tag
65 * Used by 802.1BR Bridge Port Extension in an E-Tag
67 * Set for frames containing an E-TAG (802.1BR Ethertype 893f)
69 * E-Tag group bits in 802.1BR Bridge Port Extension
71 * Used by 802.1BR Bridge Port Extension in an E-Tag
73 * Used by 802.1BR Bridge Port Extension in an E-Tag
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