74fdcb2ee1
In the past the transfer function was implied by the colorspace. However, it is an independent entity in its own right. Add support for explicitly choosing the transfer function. This change will allow us to represent linear RGB (as is used by openGL), and it will make it easier to work with decoded video material since most codecs store the transfer function as a separate property as well. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
117 lines
3.9 KiB
C
117 lines
3.9 KiB
C
/*
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* Media Bus API header
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*
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* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef V4L2_MEDIABUS_H
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#define V4L2_MEDIABUS_H
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#include <linux/v4l2-mediabus.h>
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/* Parallel flags */
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/*
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* Can the client run in master or in slave mode. By "Master mode" an operation
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* mode is meant, when the client (e.g., a camera sensor) is producing
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* horizontal and vertical synchronisation. In "Slave mode" the host is
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* providing these signals to the slave.
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*/
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#define V4L2_MBUS_MASTER (1 << 0)
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#define V4L2_MBUS_SLAVE (1 << 1)
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/*
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* Signal polarity flags
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* Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
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* V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
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* configuration of hardware that uses [HV]REF signals
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*/
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#define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2)
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#define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3)
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#define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4)
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#define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5)
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#define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6)
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#define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7)
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#define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8)
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#define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9)
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/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
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#define V4L2_MBUS_FIELD_EVEN_HIGH (1 << 10)
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/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
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#define V4L2_MBUS_FIELD_EVEN_LOW (1 << 11)
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/* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
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#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH (1 << 12)
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#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW (1 << 13)
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/* Serial flags */
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/* How many lanes the client can use */
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#define V4L2_MBUS_CSI2_1_LANE (1 << 0)
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#define V4L2_MBUS_CSI2_2_LANE (1 << 1)
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#define V4L2_MBUS_CSI2_3_LANE (1 << 2)
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#define V4L2_MBUS_CSI2_4_LANE (1 << 3)
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/* On which channels it can send video data */
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#define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4)
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#define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5)
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#define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6)
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#define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7)
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/* Does it support only continuous or also non-continuous clock mode */
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#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8)
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#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9)
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#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \
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V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE)
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#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \
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V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3)
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/**
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* v4l2_mbus_type - media bus type
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* @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
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* @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
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* also be used for BT.1120
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* @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface
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*/
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enum v4l2_mbus_type {
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V4L2_MBUS_PARALLEL,
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V4L2_MBUS_BT656,
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V4L2_MBUS_CSI2,
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};
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/**
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* v4l2_mbus_config - media bus configuration
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* @type: in: interface type
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* @flags: in / out: configuration flags, depending on @type
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*/
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struct v4l2_mbus_config {
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enum v4l2_mbus_type type;
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unsigned int flags;
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};
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static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
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const struct v4l2_mbus_framefmt *mbus_fmt)
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{
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pix_fmt->width = mbus_fmt->width;
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pix_fmt->height = mbus_fmt->height;
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pix_fmt->field = mbus_fmt->field;
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pix_fmt->colorspace = mbus_fmt->colorspace;
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pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
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pix_fmt->quantization = mbus_fmt->quantization;
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pix_fmt->xfer_func = mbus_fmt->xfer_func;
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}
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static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
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const struct v4l2_pix_format *pix_fmt,
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u32 code)
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{
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mbus_fmt->width = pix_fmt->width;
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mbus_fmt->height = pix_fmt->height;
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mbus_fmt->field = pix_fmt->field;
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mbus_fmt->colorspace = pix_fmt->colorspace;
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mbus_fmt->ycbcr_enc = pix_fmt->ycbcr_enc;
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mbus_fmt->quantization = pix_fmt->quantization;
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mbus_fmt->xfer_func = pix_fmt->xfer_func;
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mbus_fmt->code = code;
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}
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#endif
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