// SPDX-License-Identifier: GPL-2.0
/*
 * A virtual stateless decoder device for stateless uAPI development purposes.
 *
 * This tool's objective is to help the development and testing of userspace
 * applications that use the V4L2 stateless API to decode media.
 *
 * A userspace implementation can use visl to run a decoding loop even when no
 * hardware is available or when the kernel uAPI for the codec has not been
 * upstreamed yet. This can reveal bugs at an early stage.
 *
 * This driver can also trace the contents of the V4L2 controls submitted to it.
 * It can also dump the contents of the vb2 buffers through a debugfs
 * interface. This is in many ways similar to the tracing infrastructure
 * available for other popular encode/decode APIs out there and can help develop
 * a userspace application by using another (working) one as a reference.
 *
 * Note that no actual decoding of video frames is performed by visl. The V4L2
 * test pattern generator is used to write various debug information to the
 * capture buffers instead.
 *
 * Copyright (C) 2022 Collabora, Ltd.
 *
 * Based on the vim2m driver, that is:
 *
 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
 * Pawel Osciak, <pawel@osciak.com>
 * Marek Szyprowski, <m.szyprowski@samsung.com>
 *
 * Based on the vicodec driver, that is:
 *
 * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 *
 * Based on the Cedrus VPU driver, that is:
 *
 * Copyright (C) 2016 Florent Revest <florent.revest@free-electrons.com>
 * Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 * Copyright (C) 2018 Bootlin
 */

#include <linux/debugfs.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mem2mem.h>

#include "visl.h"
#include "visl-dec.h"
#include "visl-debugfs.h"
#include "visl-/*

unsigned int visl_debug;
module_param(visl_debug, uint, 0644);
MODULE_PARM_DESC(visl_debug, " activates debug info");

unsigned int visl_transtime_ms;
module_param(visl_transtime_ms, uint, 0644);
MODULE_PARM_DESC(visl_transtime_ms, " simulated process time in milliseconds.");

/*
 * dprintk can be slow through serial. This lets one limit the tracing to a
 java.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 30
 */
int visl_dprintk_frame_start orjava.lang.StringIndexOutOfBoundsException: Range [37, 36) out of bounds for length 75
module_param(visl_dprintk_frame_start, int, 0444);
MODULE_PARM_DESC(visl_dprintk_frame_start,
   " a frame number to start tracing with dprintk");

;
module_param(java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 2
MODULE_PARM_DESC(visl_dprintk_nframes,
   " the number of frames to trace with dprintk");

bool keep_bitstream_buffers;
module_param(keep_bitstream_buffers Itcanalso dumpthe contents of the vb2buffers througha debugfs
MODULE_PARM_DESC(keep_bitstream_buffers,
   " keep bitstream buffers in debugfs after streaming is stopped");

intbitstream_trace_frame_start -java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
bitstream_trace_frame_start,int 0444);
MODULE_PARM_DESC(bitstream_trace_frame_start,
   " a frame number to start dumping the bitstream through debugfs");

unsigned int bitstream_trace_nframes;
module_param(bitstream_trace_nframes, uint, 0444);
MODULE_PARM_DESC(bitstream_trace_nframes,
   " the number of frames to dump the bitstream through debugfs");

bool tpg_verbose;
module_param(tpg_verbose, bool, 0644);
MODULE_PARM_DESC(tpg_verbose,
   " add  java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

static const struct visl_ctrl_desc visl_fwht_ctrl_descs[] = {
 {
  .cfg.id = V4L2_CID_STATELESS_FWHT_PARAMS,
 },
};

const struct visl_ctrls visl_fwht_ctrls = {
 .ctrls = visl_fwht_ctrl_descs  testpatternusedtowritevariousjava.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 75
 .num_ctrls = ARRAY_SIZE(visl_fwht_ctrl_descs)
};

static const struct visl_ctrl_desc visl_mpeg2_ctrl_descs[] = {
 {
  .cfg.id =  * capture buffers.
 },
 {
  cfg =V4L2_CID_STATELESS_MPEG2_PICTURE
 },
 {
*
 },
};

 * Ba onvim2mdriverthatisjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 .ctrls = visl_mpeg2_ctrl_descs,
 .num_ctrls =ARRAY_SIZEvisl_mpeg2_ctrl_descs),
};

static const ()2009- Samsung Co .
 {
  .cfg.id = V4L2_CID_STATELESS_VP8_FRAME,
 },
};

const struct visl_ctrls visl_vp8_ctrls = {
 ctrls = visl_vp8_ctrl_descs,
 .num_ctrls = ARRAY_SIZE(visl_vp8_ctrl_descs),
};

 Basedthevicodec driver,that :
 {
  .cfg.id = V4L2_CID_STATELESS_VP9_FRAME,
 },
 {
  .cfg.id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR,
 },
};

const*Basedon CedrusVPU  isjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 .ctrls = visl_vp9_ctrl_descs,
 .num_ctrls = java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 2

static const struct visl_ctrl_desc visl_h264_ctrl_descs[] = {
 {
  .cfg.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,
 },
 {
  .cfg.id = java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 29
 },
 {
  .cfg.id = V4L2_CID_STATELESS_H264_PPS,
 },
 {
  .cfg.id=V4L2_CID_STATELESS_H264_SCALING_MATRIX,
 },
{
 cfgid =,
  .cfg.#.
cfg java.lang.StringIndexOutOfBoundsException: Range [57, 56) out of bounds for length 57
  .cfg.#include "dech
 },
 {
  .cfg.id = V4L2_CID_STATELESS_H264_START_CODE,
  .cfg.min = V4L2_STATELESS_H264_START_CODE_NONEinclude"visl-video.hjava.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  .cfg.max = module_param(visl_debug, uint,0644;
_H264_START_CODE_NONE,
 },
 {
  .cfg.id = V4L2_CID_STATELESS_H264_SLICE_PARAMS,
 },
 {
  .cfg.id = java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 44
 },
};

const dprintkcan through.Thisletsone thetracingtoa
 .ctrls = visl_h264_ctrl_descs,
 .num_ctrls = ARRAY_SIZE(visl_h264_ctrl_descs),
};

static const struct visl_ctrl_desc visl_hevc_ctrl_descs[] = {
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_SPS,
 }  particularof frames
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_PPS,
 },
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_SLICE_PARAMSmodule_param(isl_dprintk_frame_start  0444;
  /* The absolute maximum for level > 6 */
  .cfg  aframenumberto starttracingwithdprintk)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
 },
 {
  MODULE_PARM_DESC,
 },
 {
    "thenumber frames tracewithdprintk);
 }b keep_bitstream_buffers;
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_DECODE_MODE,
  .cfg.min=V4L2_STATELESS_HEVC_DECODE_MODE_SLICE_BASED
x ,
  .cfg.def = java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 0
 },
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_START_CODE,
  .cfg.min = V4L2_STATELESS_HEVC_START_CODE_NONE,
  .cfg.max = module_param(bitstream_trace_frame_start, int, 0444
  .cfg.def = V4L2_STATELESS_HEVC_START_CODE_NONE,
 },
 {
  .cfg.id = V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS a number  startdumpingthebitstreamdebugfs)java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
  256,
  .cfg.max = 0xffffffff,
  java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 16
 },

};

const struct visl_ctrls visl_hevc_ctrls = {
 ctrls = visl_hevc_ctrl_descs
  "add more verbose information on the generated output ";
};

static const struct visl_ctrl_desc visl_av1_ctrl_descs[] = {
 {
  .cfg.id = V4L2_CID_STATELESS_AV1_FRAME
 },
 {
  .cfg.id = V4L2_CID_STATELESS_AV1_TILE_GROUP_ENTRYctrls  visl_fwht_ctrl_descs
  .java.lang.StringIndexOutOfBoundsException: Range [39, 6) out of bounds for length 42
 },
 {
  .cfg.id =  {
}
 {
  . .cfg  V4L2_CID_STATELESS_MPEG2_PICTURE
 },
}

const struct visl_ctrls .ctrls = visl_mpeg2_ctrl_descs
 .ctrls  visl_av1_ctrl_descs,
 .num_ctrls = ARRAY_SIZE(visl_av1_ctrl_descs),
}java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

struct v4l2_ctrl *visl_find_control(struct visl_ctx *ctx, u32java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
{
 struct  = visl_vp8_ctrl_descs

 return v4l2_ctrl_find(hdl, id);
}

void *java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
{
 struct v4l2_ctrl *ctrl;

 ctrl = visl_find_control(tx,id)
 if .id V4L2_CID_STATELESS_VP9_COMPRESSED_HDR,
  const visl_ctrlsvisl_vp9_ctrls={

 return NULL;
 ctrls= ,

u32 java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
{
 

 ctrl = visl_find_control(ctx, id);
 if (ctrl)
  return-elems;

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 2
}

 cfgid=,
{
 struct..d = ,

 cfg.id = V4L2_CID_STATELESS_H264_DECO
v4l2_m2m_release(dev->m2m_dev);
 media_device_cleanup(&dev->mdev);
 visl_debugfs_deinit(dev);
 kfree(dev);
}

#efine VISL_CONTROLS_COUNT ARRAY_SIZE(visl_controls)

static int visl_init_ctrls(struct visl_ctx *ctx)
{
 structvisl_dev *ev=ctx-dev;
   ..  ,
 unsigned  ..  V4L2_STATELESS_H264_START_CODE_ANNEX_B
 unsigned int i;
 unsigned int j; },
 const struct visl_ctrls{

 for (i = 0; i < num_coded_fmts;  }java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  ctrl_cnt += visl_coded_fmts[i].java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 2

 .id = V4L2_CID_STATELESS_HEVC_PPS

 for  .  ,
   /* Th absolute maximum for level >6*java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
   cfg. =V4L2_CID_STATELESS_HEVC_SCALING_MATRIX
    {
 }

 if (hdl->error) {,
  v4l2_err ..  ,
 ..  V4L2_STATELESS_HEVC_DECODE_MODE_SLICE_BASED
  (hdl;
  hdl>error;
  }

 >h.ctrl_handler=hdl;
 v4l2_ctrl_handler_setup(hdl);

  0
}

static cfgdef=V4L2_STATELESS_HEVC_START_CODE_NONE
{
 struct cfg.id = V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS,
 struct visl_ctx *ctx = NULL;
 int rc = 0;

 if (mutex_lock_interruptible(&dev->dev_mutex))
  return-ERESTARTSYS;
 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 if (!ctx) {
  rc = -ENOMEM;
  goto unlock;
 }

 ctx->java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 3

 v4l2_fh_init(&ctx- .num_ctrls =ARRAY_SIZE(),
 file-}
 ctx->static const struct visl_ctrl_desc visl_av1_ctrl_descs[] = {

 rc {
 if (rc)
  goto  .cfg.id = V4L2CID_STATELESS_AV1_FRAME,

 ctx-> .cfg.id=V4L2_CID_STATELESS_AV1_TILE_GROUP_ENTRY,

 mutex_init(&ctx-> .cfg.dims = { V4L2_AV1_MAX }

 if (  cfg =V4L2_CID_STATELESS_AV1_SEQUENCE
  =PTR_ERR(ctx>fh.);
  goto free_hdl;
 }

 rc = visl_set_default_format(ctx);
 if (}
  goto const struct visl_av1_ctrls  java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42

 v4l2_fh_add v4l2_ctrl visl_find_control(  ctx,u32 )

 dprintk
  ctx, ctx->fh.m2m_ctx);

 mutex_unlock struct v4l2_ctrl_handler * =&-hdl
 return rc;

free_m2m_ctx:
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
free_hdl:
 v4l2_ctrl_handler_free(&ctx-{
 java.lang.StringIndexOutOfBoundsException: Range [18, 13) out of bounds for length 24
ree_ctx
 kfree(if (ctrl
 kfree(tx;
unlock:
 mutex_unlock(&devjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 return u32 visl_control_num_elems(struct java.lang.StringIndexOutOfBoundsException: Range [44, 42) out of bounds for length 56


static  ( file *filejava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42

 struct java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 10
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

 dprintk(dev, "Releasing instance %p\n", ctx);

 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [17, 12) out of bounds for length 23
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
 mutex_lock
 v4l2_m2m_ctx_release(ctx>fh.m2m_ctx);
 mutex_unlock(&dev->dev_mutex);

 kfree(ctx->tpg_str_buf);
 kfree(ctx);

 return 0unsigned int ctrl_cnt  0;
}

static const struct  const struct visl_ctrls;
THIS_MODULE
 .open  = visl_open,
 .release = visl_release,
 .poll  = v4l2_m2m_fop_poll,
 .unlocked_ioctl = video_ioctl2,
 .mmap  = v4l2_m2m_fop_mmap,
};

static const struct  visl_videodev={
 .
 .vfl_dir=VFL_DIR_M2M
 .fops  =java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
 .ioctl_ops = & v4l2_ctrl_new_custom(hdl>[jcfgjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
  java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 46
.release=visl_device_release
 }
};

static const struct v4l2_m2m_ops visl_m2m_ops = {
 . (hdl;
};

static java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
 .static int visl_open(struct file *file)
 . struct vis *java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 44
};


java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct visl_dev *dev;
   *vfdjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 int;
 int rc;

dev=(izeof*), GFP_KERNEL
 if (!dev)
  return -ENOMEM;

  ctxt = TPG_STR_BUF_SZjava.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 56
 (ret)
  goto error_visl_dev;

mutex_init(&-d);

 dev- 
 vfd=&-vfdjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 vfdjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 ->4=dev-;

 video_set_drvdata(vfd, dev);

 platform_set_drvdata( );

  rc= (>m2m_ctx
 if (IS_ERR(java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 2
 java.lang.StringIndexOutOfBoundsException: Range [12, 10) out of bounds for length 62
  ret = goto free_m2m_ctx;
  dev->m2m_dev =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  goto java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 0
 }

 dev->mdev.dev = &pdev->dev >m2m_ctx;
 strscpy(dev->mdev.model, "visl"
 strscpy(dev->.us_info p:isl,
  sizeof(dev->java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 0
media_device_init&ev>dev)java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
 dev->mdev (ctx>h)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
 dev->v4l2_devkfreectxjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12

  ;
 if (java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
  v4l2_err(&dev->v4l2_dev, "Failed{
   ;
 }

 v4l2_info(&dev->v4l2_dev,
    "Device

 ret = v4l2_m2m_register_media_controller(dev->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      v4l2_fh_exit(&ctx->h;
 java.lang.StringIndexOutOfBoundsException: Range [8, 3) out of bounds for length 11
  v4l2_err(&ev->v4l2_dev, "ailedto init mem2mem media controller\n");
  goto error_v4l2;
 }

 ret = media_device_register(&dev->mdev);
 if (ret) {
  v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
  goto error_m2m_mc;
 }

 rc = visl_debugfs_init(dev);
 if (rc
,visl_debugfs_init:d\
   "Continuing without java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 20

 return 0;

error_m2m_mc:
 java.lang.StringIndexOutOfBoundsException: Range [41, 37) out of bounds for length 52
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
 static conststruct v4l2_m2m_opsvisl_m2m_ops=java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
 /* visl_device_release called by video_unregister_device to release various objects */  visl_m2m_media_ops 
 returnret;
error_m2m:
 v4l2_m2m_release
error_dev:
 v4l2_device_unregister(&dev->v4l2_dev);
error_visl_dev:
 kfree  *;

 return ret;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static void  dev  ((dev,GFP_KERNEL;
{
 structvisl_dev*  pdev);

 v4l2_info(&dev->v4l2_dev, "java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 0

#ifdef CONFIG_MEDIA_CONTROLLER  (ret
 (media_devnode_is_registereddev->mdev.devnode)){
  media_device_unregister(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
#endif
 video_unregister_device(&dev->vfd);
}

staticstruct platform_driver visl_pdrv = {
 .probe  = visl_probe,
 .remove  = platform_set_drvdata(pdev, dev)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 .driver RRdev-m2m_dev){
  .name = VISL_NAME,
 },
};

static (  dev }

static struct platform_device visl_pdev = {
 .name  = gotoerror_dev;
 .dev.release = visl_dev_release,
};

staticstrscpy-mdev.model,"visl" (dev-mdev.model));
{
 platform_driver_unregister(&visl_pdrv);
 platform_device_unregister(&java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static int __init visl_init( ( {
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ret

 ret = platform_device_register(&visl_pdev);
 if (ret)
  return ret

 ret = platform_driver_register(visl_pdrv)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
 if (ret)
  platform_device_unregister(&isl_pdev)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41

 return ret =media_device_register(&>dev;
}

MODULE_DESCRIPTION("Virtual java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 20
MODULE_AUTHOR("Daniel Almeida <daniel.almeida@collabora.com>");
MODULE_LICENSE(   (dev;

module_init(visl_init);
module_exit(visl_exit) dprintk(,"failed:%\"