[media] vimc: sca: Add scaler
Implement scaler and integrated with the core Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Helen Fornazier
Mauro Carvalho Chehab
parent
88f42bf0b5
commit
6856ba7760
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@ -2,7 +2,8 @@ vimc-objs := vimc-core.o
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vimc_capture-objs := vimc-capture.o
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vimc_common-objs := vimc-common.o
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vimc_debayer-objs := vimc-debayer.o
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vimc_scaler-objs := vimc-scaler.o
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vimc_sensor-objs := vimc-sensor.o
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obj-$(CONFIG_VIDEO_VIMC) += vimc.o vimc_capture.o vimc_common.o vimc-debayer.o \
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vimc_sensor.o
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vimc_scaler.o vimc_sensor.o
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@ -20,6 +20,10 @@
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#include "vimc-common.h"
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/*
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* NOTE: non-bayer formats need to come first (necessary for enum_mbus_code
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* in the scaler)
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*/
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static const struct vimc_pix_map vimc_pix_map_list[] = {
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/* TODO: add all missing formats */
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@ -28,16 +32,19 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
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.code = MEDIA_BUS_FMT_BGR888_1X24,
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.pixelformat = V4L2_PIX_FMT_BGR24,
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.bpp = 3,
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.bayer = false,
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},
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{
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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.pixelformat = V4L2_PIX_FMT_RGB24,
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.bpp = 3,
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.bayer = false,
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},
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{
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.code = MEDIA_BUS_FMT_ARGB8888_1X32,
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.pixelformat = V4L2_PIX_FMT_ARGB32,
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.bpp = 4,
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.bayer = false,
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},
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/* Bayer formats */
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@ -45,41 +52,49 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
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.code = MEDIA_BUS_FMT_SBGGR8_1X8,
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.pixelformat = V4L2_PIX_FMT_SBGGR8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGBRG8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGRBG8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB8_1X8,
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.pixelformat = V4L2_PIX_FMT_SRGGB8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SBGGR10_1X10,
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.pixelformat = V4L2_PIX_FMT_SBGGR10,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG10_1X10,
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.pixelformat = V4L2_PIX_FMT_SGBRG10,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG10_1X10,
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.pixelformat = V4L2_PIX_FMT_SGRBG10,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB10_1X10,
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.pixelformat = V4L2_PIX_FMT_SRGGB10,
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.bpp = 2,
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.bayer = true,
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},
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/* 10bit raw bayer a-law compressed to 8 bits */
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@ -87,21 +102,25 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
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.code = MEDIA_BUS_FMT_SBGGR10_ALAW8_1X8,
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.pixelformat = V4L2_PIX_FMT_SBGGR10ALAW8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG10_ALAW8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGBRG10ALAW8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB10_ALAW8_1X8,
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.pixelformat = V4L2_PIX_FMT_SRGGB10ALAW8,
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.bpp = 1,
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.bayer = true,
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},
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/* 10bit raw bayer DPCM compressed to 8 bits */
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@ -109,41 +128,49 @@ static const struct vimc_pix_map vimc_pix_map_list[] = {
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.code = MEDIA_BUS_FMT_SBGGR10_DPCM8_1X8,
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.pixelformat = V4L2_PIX_FMT_SBGGR10DPCM8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG10_DPCM8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGBRG10DPCM8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
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.pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB10_DPCM8_1X8,
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.pixelformat = V4L2_PIX_FMT_SRGGB10DPCM8,
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.bpp = 1,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SBGGR12_1X12,
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.pixelformat = V4L2_PIX_FMT_SBGGR12,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGBRG12_1X12,
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.pixelformat = V4L2_PIX_FMT_SGBRG12,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SGRBG12_1X12,
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.pixelformat = V4L2_PIX_FMT_SGRBG12,
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.bpp = 2,
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.bayer = true,
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},
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{
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.code = MEDIA_BUS_FMT_SRGGB12_1X12,
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.pixelformat = V4L2_PIX_FMT_SRGGB12,
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.bpp = 2,
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.bayer = true,
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},
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};
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@ -84,6 +84,7 @@ struct vimc_pix_map {
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unsigned int code;
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unsigned int bpp;
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u32 pixelformat;
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bool bayer;
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};
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/**
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@ -0,0 +1,455 @@
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/*
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* vimc-scaler.c Virtual Media Controller Driver
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*
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* Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/component.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/vmalloc.h>
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#include <linux/v4l2-mediabus.h>
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#include <media/v4l2-subdev.h>
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#include "vimc-common.h"
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#define VIMC_SCA_DRV_NAME "vimc-scaler"
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static unsigned int sca_mult = 3;
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module_param(sca_mult, uint, 0000);
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MODULE_PARM_DESC(sca_mult, " the image size multiplier");
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#define IS_SINK(pad) (!pad)
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#define IS_SRC(pad) (pad)
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#define MAX_ZOOM 8
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struct vimc_sca_device {
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struct vimc_ent_device ved;
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struct v4l2_subdev sd;
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struct device *dev;
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/* NOTE: the source fmt is the same as the sink
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* with the width and hight multiplied by mult
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*/
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struct v4l2_mbus_framefmt sink_fmt;
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/* Values calculated when the stream starts */
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u8 *src_frame;
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unsigned int src_line_size;
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unsigned int bpp;
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};
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static const struct v4l2_mbus_framefmt sink_fmt_default = {
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.width = 640,
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.height = 480,
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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.field = V4L2_FIELD_NONE,
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.colorspace = V4L2_COLORSPACE_DEFAULT,
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};
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static int vimc_sca_init_cfg(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg)
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{
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struct v4l2_mbus_framefmt *mf;
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unsigned int i;
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mf = v4l2_subdev_get_try_format(sd, cfg, 0);
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*mf = sink_fmt_default;
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for (i = 1; i < sd->entity.num_pads; i++) {
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mf = v4l2_subdev_get_try_format(sd, cfg, i);
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*mf = sink_fmt_default;
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mf->width = mf->width * sca_mult;
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mf->height = mf->height * sca_mult;
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}
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return 0;
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}
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static int vimc_sca_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
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{
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const struct vimc_pix_map *vpix = vimc_pix_map_by_index(code->index);
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/* We don't support bayer format */
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if (!vpix || vpix->bayer)
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return -EINVAL;
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code->code = vpix->code;
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return 0;
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}
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static int vimc_sca_enum_frame_size(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_frame_size_enum *fse)
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{
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const struct vimc_pix_map *vpix;
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if (fse->index)
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return -EINVAL;
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/* Only accept code in the pix map table in non bayer format */
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vpix = vimc_pix_map_by_code(fse->code);
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if (!vpix || vpix->bayer)
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return -EINVAL;
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fse->min_width = VIMC_FRAME_MIN_WIDTH;
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fse->min_height = VIMC_FRAME_MIN_HEIGHT;
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if (IS_SINK(fse->pad)) {
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fse->max_width = VIMC_FRAME_MAX_WIDTH;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT;
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} else {
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fse->max_width = VIMC_FRAME_MAX_WIDTH * MAX_ZOOM;
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fse->max_height = VIMC_FRAME_MAX_HEIGHT * MAX_ZOOM;
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}
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return 0;
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}
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static int vimc_sca_get_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *format)
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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/* Get the current sink format */
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format->format = (format->which == V4L2_SUBDEV_FORMAT_TRY) ?
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*v4l2_subdev_get_try_format(sd, cfg, 0) :
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vsca->sink_fmt;
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/* Scale the frame size for the source pad */
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if (IS_SRC(format->pad)) {
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format->format.width = vsca->sink_fmt.width * sca_mult;
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format->format.height = vsca->sink_fmt.height * sca_mult;
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}
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return 0;
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}
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static void vimc_sca_adjust_sink_fmt(struct v4l2_mbus_framefmt *fmt)
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{
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const struct vimc_pix_map *vpix;
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/* Only accept code in the pix map table in non bayer format */
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vpix = vimc_pix_map_by_code(fmt->code);
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if (!vpix || vpix->bayer)
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fmt->code = sink_fmt_default.code;
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fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
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VIMC_FRAME_MAX_WIDTH) & ~1;
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fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
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VIMC_FRAME_MAX_HEIGHT) & ~1;
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if (fmt->field == V4L2_FIELD_ANY)
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fmt->field = sink_fmt_default.field;
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vimc_colorimetry_clamp(fmt);
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}
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static int vimc_sca_set_fmt(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_format *fmt)
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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struct v4l2_mbus_framefmt *sink_fmt;
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if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
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/* Do not change the format while stream is on */
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if (vsca->src_frame)
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return -EBUSY;
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sink_fmt = &vsca->sink_fmt;
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} else {
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sink_fmt = v4l2_subdev_get_try_format(sd, cfg, 0);
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}
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/*
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* Do not change the format of the source pad,
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* it is propagated from the sink
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*/
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if (IS_SRC(fmt->pad)) {
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fmt->format = *sink_fmt;
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fmt->format.width = sink_fmt->width * sca_mult;
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fmt->format.height = sink_fmt->height * sca_mult;
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} else {
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/* Set the new format in the sink pad */
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vimc_sca_adjust_sink_fmt(&fmt->format);
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dev_dbg(vsca->dev, "%s: sink format update: "
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"old:%dx%d (0x%x, %d, %d, %d, %d) "
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"new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsca->sd.name,
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/* old */
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sink_fmt->width, sink_fmt->height, sink_fmt->code,
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sink_fmt->colorspace, sink_fmt->quantization,
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sink_fmt->xfer_func, sink_fmt->ycbcr_enc,
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/* new */
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fmt->format.width, fmt->format.height, fmt->format.code,
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fmt->format.colorspace, fmt->format.quantization,
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fmt->format.xfer_func, fmt->format.ycbcr_enc);
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*sink_fmt = fmt->format;
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}
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return 0;
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}
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static const struct v4l2_subdev_pad_ops vimc_sca_pad_ops = {
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.init_cfg = vimc_sca_init_cfg,
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.enum_mbus_code = vimc_sca_enum_mbus_code,
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.enum_frame_size = vimc_sca_enum_frame_size,
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.get_fmt = vimc_sca_get_fmt,
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.set_fmt = vimc_sca_set_fmt,
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};
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static int vimc_sca_s_stream(struct v4l2_subdev *sd, int enable)
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{
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struct vimc_sca_device *vsca = v4l2_get_subdevdata(sd);
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int ret;
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if (enable) {
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const struct vimc_pix_map *vpix;
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unsigned int frame_size;
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if (vsca->src_frame)
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return 0;
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/* Save the bytes per pixel of the sink */
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vpix = vimc_pix_map_by_code(vsca->sink_fmt.code);
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vsca->bpp = vpix->bpp;
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/* Calculate the width in bytes of the src frame */
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vsca->src_line_size = vsca->sink_fmt.width *
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sca_mult * vsca->bpp;
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/* Calculate the frame size of the source pad */
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frame_size = vsca->src_line_size * vsca->sink_fmt.height *
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sca_mult;
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/* Allocate the frame buffer. Use vmalloc to be able to
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* allocate a large amount of memory
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*/
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vsca->src_frame = vmalloc(frame_size);
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if (!vsca->src_frame)
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return -ENOMEM;
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/* Turn the stream on in the subdevices directly connected */
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ret = vimc_pipeline_s_stream(&vsca->sd.entity, 1);
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if (ret) {
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vfree(vsca->src_frame);
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vsca->src_frame = NULL;
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return ret;
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}
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} else {
|
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if (!vsca->src_frame)
|
||||
return 0;
|
||||
|
||||
/* Disable streaming from the pipe */
|
||||
ret = vimc_pipeline_s_stream(&vsca->sd.entity, 0);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
vfree(vsca->src_frame);
|
||||
vsca->src_frame = NULL;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct v4l2_subdev_video_ops vimc_sca_video_ops = {
|
||||
.s_stream = vimc_sca_s_stream,
|
||||
};
|
||||
|
||||
static const struct v4l2_subdev_ops vimc_sca_ops = {
|
||||
.pad = &vimc_sca_pad_ops,
|
||||
.video = &vimc_sca_video_ops,
|
||||
};
|
||||
|
||||
static void vimc_sca_fill_pix(u8 *const ptr,
|
||||
const u8 *const pixel,
|
||||
const unsigned int bpp)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
/* copy the pixel to the pointer */
|
||||
for (i = 0; i < bpp; i++)
|
||||
ptr[i] = pixel[i];
|
||||
}
|
||||
|
||||
static void vimc_sca_scale_pix(const struct vimc_sca_device *const vsca,
|
||||
const unsigned int lin, const unsigned int col,
|
||||
const u8 *const sink_frame)
|
||||
{
|
||||
unsigned int i, j, index;
|
||||
const u8 *pixel;
|
||||
|
||||
/* Point to the pixel value in position (lin, col) in the sink frame */
|
||||
index = VIMC_FRAME_INDEX(lin, col,
|
||||
vsca->sink_fmt.width,
|
||||
vsca->bpp);
|
||||
pixel = &sink_frame[index];
|
||||
|
||||
dev_dbg(vsca->dev,
|
||||
"sca: %s: --- scale_pix sink pos %dx%d, index %d ---\n",
|
||||
vsca->sd.name, lin, col, index);
|
||||
|
||||
/* point to the place we are going to put the first pixel
|
||||
* in the scaled src frame
|
||||
*/
|
||||
index = VIMC_FRAME_INDEX(lin * sca_mult, col * sca_mult,
|
||||
vsca->sink_fmt.width * sca_mult, vsca->bpp);
|
||||
|
||||
dev_dbg(vsca->dev, "sca: %s: scale_pix src pos %dx%d, index %d\n",
|
||||
vsca->sd.name, lin * sca_mult, col * sca_mult, index);
|
||||
|
||||
/* Repeat this pixel mult times */
|
||||
for (i = 0; i < sca_mult; i++) {
|
||||
/* Iterate through each beginning of a
|
||||
* pixel repetition in a line
|
||||
*/
|
||||
for (j = 0; j < sca_mult * vsca->bpp; j += vsca->bpp) {
|
||||
dev_dbg(vsca->dev,
|
||||
"sca: %s: sca: scale_pix src pos %d\n",
|
||||
vsca->sd.name, index + j);
|
||||
|
||||
/* copy the pixel to the position index + j */
|
||||
vimc_sca_fill_pix(&vsca->src_frame[index + j],
|
||||
pixel, vsca->bpp);
|
||||
}
|
||||
|
||||
/* move the index to the next line */
|
||||
index += vsca->src_line_size;
|
||||
}
|
||||
}
|
||||
|
||||
static void vimc_sca_fill_src_frame(const struct vimc_sca_device *const vsca,
|
||||
const u8 *const sink_frame)
|
||||
{
|
||||
unsigned int i, j;
|
||||
|
||||
/* Scale each pixel from the original sink frame */
|
||||
/* TODO: implement scale down, only scale up is supported for now */
|
||||
for (i = 0; i < vsca->sink_fmt.height; i++)
|
||||
for (j = 0; j < vsca->sink_fmt.width; j++)
|
||||
vimc_sca_scale_pix(vsca, i, j, sink_frame);
|
||||
}
|
||||
|
||||
static void vimc_sca_process_frame(struct vimc_ent_device *ved,
|
||||
struct media_pad *sink,
|
||||
const void *sink_frame)
|
||||
{
|
||||
struct vimc_sca_device *vsca = container_of(ved, struct vimc_sca_device,
|
||||
ved);
|
||||
unsigned int i;
|
||||
|
||||
/* If the stream in this node is not active, just return */
|
||||
if (!vsca->src_frame)
|
||||
return;
|
||||
|
||||
vimc_sca_fill_src_frame(vsca, sink_frame);
|
||||
|
||||
/* Propagate the frame through all source pads */
|
||||
for (i = 1; i < vsca->sd.entity.num_pads; i++) {
|
||||
struct media_pad *pad = &vsca->sd.entity.pads[i];
|
||||
|
||||
vimc_propagate_frame(pad, vsca->src_frame);
|
||||
}
|
||||
};
|
||||
|
||||
static void vimc_sca_comp_unbind(struct device *comp, struct device *master,
|
||||
void *master_data)
|
||||
{
|
||||
struct vimc_ent_device *ved = dev_get_drvdata(comp);
|
||||
struct vimc_sca_device *vsca = container_of(ved, struct vimc_sca_device,
|
||||
ved);
|
||||
|
||||
vimc_ent_sd_unregister(ved, &vsca->sd);
|
||||
kfree(vsca);
|
||||
}
|
||||
|
||||
|
||||
static int vimc_sca_comp_bind(struct device *comp, struct device *master,
|
||||
void *master_data)
|
||||
{
|
||||
struct v4l2_device *v4l2_dev = master_data;
|
||||
struct vimc_platform_data *pdata = comp->platform_data;
|
||||
struct vimc_sca_device *vsca;
|
||||
int ret;
|
||||
|
||||
/* Allocate the vsca struct */
|
||||
vsca = kzalloc(sizeof(*vsca), GFP_KERNEL);
|
||||
if (!vsca)
|
||||
return -ENOMEM;
|
||||
|
||||
/* Initialize ved and sd */
|
||||
ret = vimc_ent_sd_register(&vsca->ved, &vsca->sd, v4l2_dev,
|
||||
pdata->entity_name,
|
||||
MEDIA_ENT_F_ATV_DECODER, 2,
|
||||
(const unsigned long[2]) {MEDIA_PAD_FL_SINK,
|
||||
MEDIA_PAD_FL_SOURCE},
|
||||
&vimc_sca_ops);
|
||||
if (ret) {
|
||||
kfree(vsca);
|
||||
return ret;
|
||||
}
|
||||
|
||||
vsca->ved.process_frame = vimc_sca_process_frame;
|
||||
dev_set_drvdata(comp, &vsca->ved);
|
||||
vsca->dev = comp;
|
||||
|
||||
/* Initialize the frame format */
|
||||
vsca->sink_fmt = sink_fmt_default;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct component_ops vimc_sca_comp_ops = {
|
||||
.bind = vimc_sca_comp_bind,
|
||||
.unbind = vimc_sca_comp_unbind,
|
||||
};
|
||||
|
||||
static int vimc_sca_probe(struct platform_device *pdev)
|
||||
{
|
||||
return component_add(&pdev->dev, &vimc_sca_comp_ops);
|
||||
}
|
||||
|
||||
static int vimc_sca_remove(struct platform_device *pdev)
|
||||
{
|
||||
component_del(&pdev->dev, &vimc_sca_comp_ops);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver vimc_sca_pdrv = {
|
||||
.probe = vimc_sca_probe,
|
||||
.remove = vimc_sca_remove,
|
||||
.driver = {
|
||||
.name = VIMC_SCA_DRV_NAME,
|
||||
},
|
||||
};
|
||||
|
||||
static const struct platform_device_id vimc_sca_driver_ids[] = {
|
||||
{
|
||||
.name = VIMC_SCA_DRV_NAME,
|
||||
},
|
||||
{ }
|
||||
};
|
||||
|
||||
module_platform_driver(vimc_sca_pdrv);
|
||||
|
||||
MODULE_DEVICE_TABLE(platform, vimc_sca_driver_ids);
|
||||
|
||||
MODULE_DESCRIPTION("Virtual Media Controller Driver (VIMC) Scaler");
|
||||
MODULE_AUTHOR("Helen Mae Koike Fornazier <helen.fornazier@gmail.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue