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linuxdebug/drivers/media/test-drivers/vicodec/vicodec-core.c

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null pointer error
2024-07-16 15:50:57 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* A virtual codec example device.
*
* Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
*
* This is a virtual codec device driver for testing the codec framework.
* It simulates a device that uses memory buffers for both source and
* destination and encodes or decodes the data.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-vmalloc.h>
#include "codec-v4l2-fwht.h"
MODULE_DESCRIPTION("Virtual codec device");
MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>");
MODULE_LICENSE("GPL v2");
static bool multiplanar;
module_param(multiplanar, bool, 0444);
MODULE_PARM_DESC(multiplanar,
" use multi-planar API instead of single-planar API");
static unsigned int debug;
module_param(debug, uint, 0644);
MODULE_PARM_DESC(debug, " activates debug info");
#define VICODEC_NAME "vicodec"
#define MAX_WIDTH 4096U
#define MIN_WIDTH 640U
#define MAX_HEIGHT 2160U
#define MIN_HEIGHT 360U
#define dprintk(dev, fmt, arg...) \
v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
struct pixfmt_info {
u32 id;
unsigned int bytesperline_mult;
unsigned int sizeimage_mult;
unsigned int sizeimage_div;
unsigned int luma_step;
unsigned int chroma_step;
/* Chroma plane subsampling */
unsigned int width_div;
unsigned int height_div;
};
static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = {
V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1
};
static const struct v4l2_fwht_pixfmt_info pixfmt_stateless_fwht = {
V4L2_PIX_FMT_FWHT_STATELESS, 0, 3, 1, 1, 1, 1, 1, 0, 1
};
static void vicodec_dev_release(struct device *dev)
{
}
static struct platform_device vicodec_pdev = {
.name = VICODEC_NAME,
.dev.release = vicodec_dev_release,
};
/* Per-queue, driver-specific private data */
struct vicodec_q_data {
unsigned int coded_width;
unsigned int coded_height;
unsigned int visible_width;
unsigned int visible_height;
unsigned int sizeimage;
unsigned int vb2_sizeimage;
unsigned int sequence;
const struct v4l2_fwht_pixfmt_info *info;
};
enum {
V4L2_M2M_SRC = 0,
V4L2_M2M_DST = 1,
};
struct vicodec_dev_instance {
struct video_device vfd;
struct mutex mutex;
spinlock_t lock;
struct v4l2_m2m_dev *m2m_dev;
};
struct vicodec_dev {
struct v4l2_device v4l2_dev;
struct vicodec_dev_instance stateful_enc;
struct vicodec_dev_instance stateful_dec;
struct vicodec_dev_instance stateless_dec;
#ifdef CONFIG_MEDIA_CONTROLLER
struct media_device mdev;
#endif
};
struct vicodec_ctx {
struct v4l2_fh fh;
struct vicodec_dev *dev;
bool is_enc;
bool is_stateless;
spinlock_t *lock;
struct v4l2_ctrl_handler hdl;
/* Source and destination queue data */
struct vicodec_q_data q_data[2];
struct v4l2_fwht_state state;
u32 cur_buf_offset;
u32 comp_max_size;
u32 comp_size;
u32 header_size;
u32 comp_magic_cnt;
bool comp_has_frame;
bool comp_has_next_frame;
bool first_source_change_sent;
bool source_changed;
};
static const struct v4l2_event vicodec_eos_event = {
.type = V4L2_EVENT_EOS
};
static inline struct vicodec_ctx *file2ctx(struct file *file)
{
return container_of(file->private_data, struct vicodec_ctx, fh);
}
static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx,
enum v4l2_buf_type type)
{
switch (type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
return &ctx->q_data[V4L2_M2M_SRC];
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
return &ctx->q_data[V4L2_M2M_DST];
default:
break;
}
return NULL;
}
static void copy_cap_to_ref(const u8 *cap, const struct v4l2_fwht_pixfmt_info *info,
struct v4l2_fwht_state *state)
{
int plane_idx;
u8 *p_ref = state->ref_frame.buf;
unsigned int cap_stride = state->stride;
unsigned int ref_stride = state->ref_stride;
for (plane_idx = 0; plane_idx < info->planes_num; plane_idx++) {
int i;
unsigned int h_div = (plane_idx == 1 || plane_idx == 2) ?
info->height_div : 1;
const u8 *row_cap = cap;
u8 *row_ref = p_ref;
if (info->planes_num == 3 && plane_idx == 1) {
cap_stride /= 2;
ref_stride /= 2;
}
if (plane_idx == 1 &&
(info->id == V4L2_PIX_FMT_NV24 ||
info->id == V4L2_PIX_FMT_NV42)) {
cap_stride *= 2;
ref_stride *= 2;
}
for (i = 0; i < state->visible_height / h_div; i++) {
memcpy(row_ref, row_cap, ref_stride);
row_ref += ref_stride;
row_cap += cap_stride;
}
cap += cap_stride * (state->coded_height / h_div);
p_ref += ref_stride * (state->coded_height / h_div);
}
}
static bool validate_by_version(unsigned int flags, unsigned int version)
{
if (!version || version > V4L2_FWHT_VERSION)
return false;
if (version >= 2) {
unsigned int components_num = 1 +
((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
unsigned int pixenc = flags & V4L2_FWHT_FL_PIXENC_MSK;
if (components_num == 0 || components_num > 4 || !pixenc)
return false;
}
return true;
}
static bool validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params *params,
const struct v4l2_fwht_pixfmt_info *cur_info)
{
unsigned int width_div =
(params->flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
unsigned int height_div =
(params->flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
unsigned int components_num = 3;
unsigned int pixenc = 0;
if (params->version < 3)
return false;
components_num = 1 + ((params->flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
pixenc = (params->flags & V4L2_FWHT_FL_PIXENC_MSK);
if (v4l2_fwht_validate_fmt(cur_info, width_div, height_div,
components_num, pixenc))
return true;
return false;
}
static void update_state_from_header(struct vicodec_ctx *ctx)
{
const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
ctx->state.visible_width = ntohl(p_hdr->width);
ctx->state.visible_height = ntohl(p_hdr->height);
ctx->state.colorspace = ntohl(p_hdr->colorspace);
ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
ctx->state.quantization = ntohl(p_hdr->quantization);
}
static int device_process(struct vicodec_ctx *ctx,
struct vb2_v4l2_buffer *src_vb,
struct vb2_v4l2_buffer *dst_vb)
{
struct vicodec_dev *dev = ctx->dev;
struct v4l2_fwht_state *state = &ctx->state;
u8 *p_src, *p_dst;
int ret = 0;
if (ctx->is_enc || ctx->is_stateless)
p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0);
else
p_src = state->compressed_frame;
if (ctx->is_stateless) {
struct media_request *src_req = src_vb->vb2_buf.req_obj.req;
ret = v4l2_ctrl_request_setup(src_req, &ctx->hdl);
if (ret)
return ret;
update_state_from_header(ctx);
ctx->state.header.size =
htonl(vb2_get_plane_payload(&src_vb->vb2_buf, 0));
/*
* set the reference buffer from the reference timestamp
* only if this is a P-frame
*/
if (!(ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)) {
struct vb2_buffer *ref_vb2_buf;
struct vb2_queue *vq_cap =
v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
ref_vb2_buf = vb2_find_buffer(vq_cap, ctx->state.ref_frame_ts);
if (!ref_vb2_buf)
return -EINVAL;
if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR)
ret = -EINVAL;
ctx->state.ref_frame.buf =
vb2_plane_vaddr(ref_vb2_buf, 0);
} else {
ctx->state.ref_frame.buf = NULL;
}
}
p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0);
if (!p_src || !p_dst) {
v4l2_err(&dev->v4l2_dev,
"Acquiring kernel pointers to buffers failed\n");
return -EFAULT;
}
if (ctx->is_enc) {
struct vicodec_q_data *q_src;
int comp_sz_or_errcode;
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
state->info = q_src->info;
comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst);
if (comp_sz_or_errcode < 0)
return comp_sz_or_errcode;
vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode);
} else {
struct vicodec_q_data *q_dst;
unsigned int comp_frame_size = ntohl(ctx->state.header.size);
q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (comp_frame_size > ctx->comp_max_size)
return -EINVAL;
state->info = q_dst->info;
ret = v4l2_fwht_decode(state, p_src, p_dst);
if (ret < 0)
return ret;
if (!ctx->is_stateless)
copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state);
vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage);
if (ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)
dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME;
else
dst_vb->flags |= V4L2_BUF_FLAG_PFRAME;
}
return ret;
}
/*
* mem2mem callbacks
*/
static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx,
u8 **pp, u32 sz)
{
static const u8 magic[] = {
0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
};
u8 *p = *pp;
u32 state;
u8 *header = (u8 *)&ctx->state.header;
state = VB2_BUF_STATE_DONE;
if (!ctx->header_size) {
state = VB2_BUF_STATE_ERROR;
for (; p < *pp + sz; p++) {
u32 copy;
p = memchr(p, magic[ctx->comp_magic_cnt],
*pp + sz - p);
if (!p) {
ctx->comp_magic_cnt = 0;
p = *pp + sz;
break;
}
copy = sizeof(magic) - ctx->comp_magic_cnt;
if (*pp + sz - p < copy)
copy = *pp + sz - p;
memcpy(header + ctx->comp_magic_cnt, p, copy);
ctx->comp_magic_cnt += copy;
if (!memcmp(header, magic, ctx->comp_magic_cnt)) {
p += copy;
state = VB2_BUF_STATE_DONE;
break;
}
ctx->comp_magic_cnt = 0;
}
if (ctx->comp_magic_cnt < sizeof(magic)) {
*pp = p;
return state;
}
ctx->header_size = sizeof(magic);
}
if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size;
if (*pp + sz - p < copy)
copy = *pp + sz - p;
memcpy(header + ctx->header_size, p, copy);
p += copy;
ctx->header_size += copy;
}
*pp = p;
return state;
}
/* device_run() - prepares and starts the device */
static void device_run(void *priv)
{
struct vicodec_ctx *ctx = priv;
struct vicodec_dev *dev = ctx->dev;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
struct vicodec_q_data *q_src, *q_dst;
u32 state;
struct media_request *src_req;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
src_req = src_buf->vb2_buf.req_obj.req;
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
state = VB2_BUF_STATE_DONE;
if (device_process(ctx, src_buf, dst_buf))
state = VB2_BUF_STATE_ERROR;
else
dst_buf->sequence = q_dst->sequence++;
dst_buf->flags &= ~V4L2_BUF_FLAG_LAST;
v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
spin_lock(ctx->lock);
if (!ctx->comp_has_next_frame &&
v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) {
dst_buf->flags |= V4L2_BUF_FLAG_LAST;
v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx);
}
if (ctx->is_enc || ctx->is_stateless) {
src_buf->sequence = q_src->sequence++;
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, state);
} else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) {
src_buf->sequence = q_src->sequence++;
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, state);
ctx->cur_buf_offset = 0;
ctx->comp_has_next_frame = false;
}
v4l2_m2m_buf_done(dst_buf, state);
ctx->comp_size = 0;
ctx->header_size = 0;
ctx->comp_magic_cnt = 0;
ctx->comp_has_frame = false;
spin_unlock(ctx->lock);
if (ctx->is_stateless && src_req)
v4l2_ctrl_request_complete(src_req, &ctx->hdl);
if (ctx->is_enc)
v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx);
else if (ctx->is_stateless)
v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev,
ctx->fh.m2m_ctx);
else
v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx);
}
static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state)
{
struct vb2_v4l2_buffer *src_buf;
struct vicodec_q_data *q_src;
q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
spin_lock(ctx->lock);
src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
src_buf->sequence = q_src->sequence++;
v4l2_m2m_buf_done(src_buf, state);
ctx->cur_buf_offset = 0;
spin_unlock(ctx->lock);
}
static const struct v4l2_fwht_pixfmt_info *
info_from_header(const struct fwht_cframe_hdr *p_hdr)
{
unsigned int flags = ntohl(p_hdr->flags);
unsigned int width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
unsigned int height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
unsigned int components_num = 3;
unsigned int pixenc = 0;
unsigned int version = ntohl(p_hdr->version);
if (version >= 2) {
components_num = 1 + ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >>
V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET);
pixenc = (flags & V4L2_FWHT_FL_PIXENC_MSK);
}
return v4l2_fwht_find_nth_fmt(width_div, height_div,
components_num, pixenc, 0);
}
static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr)
{
const struct v4l2_fwht_pixfmt_info *info;
unsigned int w = ntohl(p_hdr->width);
unsigned int h = ntohl(p_hdr->height);
unsigned int version = ntohl(p_hdr->version);
unsigned int flags = ntohl(p_hdr->flags);
if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT)
return false;
if (!validate_by_version(flags, version))
return false;
info = info_from_header(p_hdr);
if (!info)
return false;
return true;
}
static void update_capture_data_from_header(struct vicodec_ctx *ctx)
{
struct vicodec_q_data *q_dst = get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr);
unsigned int flags = ntohl(p_hdr->flags);
unsigned int hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
unsigned int hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
/*
* This function should not be used by a stateless codec since
* it changes values in q_data that are not request specific
*/
WARN_ON(ctx->is_stateless);
q_dst->info = info;
q_dst->visible_width = ntohl(p_hdr->width);
q_dst->visible_height = ntohl(p_hdr->height);
q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div);
q_dst->coded_height = vic_round_dim(q_dst->visible_height,
hdr_height_div);
q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height *
q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div;
ctx->state.colorspace = ntohl(p_hdr->colorspace);
ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
ctx->state.quantization = ntohl(p_hdr->quantization);
}
static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf,
const struct vb2_v4l2_buffer *src_buf,
struct vicodec_ctx *ctx)
{
struct vicodec_q_data *q_dst = get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
dst_buf->sequence = q_dst->sequence++;
v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc);
dst_buf->flags |= V4L2_BUF_FLAG_LAST;
v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
}
static int job_ready(void *priv)
{
static const u8 magic[] = {
0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
};
struct vicodec_ctx *ctx = priv;
struct vb2_v4l2_buffer *src_buf;
u8 *p_src;
u8 *p;
u32 sz;
u32 state;
struct vicodec_q_data *q_dst = get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
unsigned int flags;
unsigned int hdr_width_div;
unsigned int hdr_height_div;
unsigned int max_to_copy;
unsigned int comp_frame_size;
if (ctx->source_changed)
return 0;
if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame)
return 1;
restart:
ctx->comp_has_next_frame = false;
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
if (!src_buf)
return 0;
p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
p = p_src + ctx->cur_buf_offset;
state = VB2_BUF_STATE_DONE;
if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
state = get_next_header(ctx, &p, p_src + sz - p);
if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx,
src_buf))
return 1;
job_remove_src_buf(ctx, state);
goto restart;
}
}
comp_frame_size = ntohl(ctx->state.header.size);
/*
* The current scanned frame might be the first frame of a new
* resolution so its size might be larger than ctx->comp_max_size.
* In that case it is copied up to the current buffer capacity and
* the copy will continue after allocating new large enough buffer
* when restreaming
*/
max_to_copy = min(comp_frame_size, ctx->comp_max_size);
if (ctx->comp_size < max_to_copy) {
u32 copy = max_to_copy - ctx->comp_size;
if (copy > p_src + sz - p)
copy = p_src + sz - p;
memcpy(ctx->state.compressed_frame + ctx->comp_size,
p, copy);
p += copy;
ctx->comp_size += copy;
if (ctx->comp_size < max_to_copy) {
if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx,
src_buf))
return 1;
job_remove_src_buf(ctx, state);
goto restart;
}
}
ctx->cur_buf_offset = p - p_src;
if (ctx->comp_size == comp_frame_size)
ctx->comp_has_frame = true;
ctx->comp_has_next_frame = false;
if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >=
sizeof(struct fwht_cframe_hdr)) {
struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
u32 frame_size = ntohl(p_hdr->size);
u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);
if (!memcmp(p, magic, sizeof(magic)))
ctx->comp_has_next_frame = remaining >= frame_size;
}
/*
* if the header is invalid the device_run will just drop the frame
* with an error
*/
if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame)
return 1;
flags = ntohl(ctx->state.header.flags);
hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
if (ntohl(ctx->state.header.width) != q_dst->visible_width ||
ntohl(ctx->state.header.height) != q_dst->visible_height ||
!q_dst->info ||
hdr_width_div != q_dst->info->width_div ||
hdr_height_div != q_dst->info->height_div) {
static const struct v4l2_event rs_event = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
struct vb2_v4l2_buffer *dst_buf =
v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
update_capture_data_from_header(ctx);
v4l2_event_queue_fh(&ctx->fh, &rs_event);
set_last_buffer(dst_buf, src_buf, ctx);
ctx->source_changed = true;
return 0;
}
return 1;
}
/*
* video ioctls
*/
static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
{
const struct v4l2_fwht_pixfmt_info *info =
v4l2_fwht_find_pixfmt(fmt);
if (!info)
info = v4l2_fwht_get_pixfmt(0);
return info;
}
static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver));
strscpy(cap->card, VICODEC_NAME, sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", VICODEC_NAME);
return 0;
}
static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx,
bool is_out)
{
bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out);
if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
return -EINVAL;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar)
return -EINVAL;
if (is_uncomp) {
const struct v4l2_fwht_pixfmt_info *info =
get_q_data(ctx, f->type)->info;
if (ctx->is_enc ||
!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q))
info = v4l2_fwht_get_pixfmt(f->index);
else
info = v4l2_fwht_find_nth_fmt(info->width_div,
info->height_div,
info->components_num,
info->pixenc,
f->index);
if (!info)
return -EINVAL;
f->pixelformat = info->id;
} else {
if (f->index)
return -EINVAL;
f->pixelformat = ctx->is_stateless ?
V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT;
if (!ctx->is_enc && !ctx->is_stateless)
f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION |
V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM;
}
return 0;
}
static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
return enum_fmt(f, ctx, false);
}
static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
return enum_fmt(f, ctx, true);
}
static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct vb2_queue *vq;
struct vicodec_q_data *q_data;
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
const struct v4l2_fwht_pixfmt_info *info;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = get_q_data(ctx, f->type);
info = q_data->info;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
pix->width = q_data->coded_width;
pix->height = q_data->coded_height;
pix->field = V4L2_FIELD_NONE;
pix->pixelformat = info->id;
pix->bytesperline = q_data->coded_width *
info->bytesperline_mult;
pix->sizeimage = q_data->sizeimage;
pix->colorspace = ctx->state.colorspace;
pix->xfer_func = ctx->state.xfer_func;
pix->ycbcr_enc = ctx->state.ycbcr_enc;
pix->quantization = ctx->state.quantization;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
pix_mp->width = q_data->coded_width;
pix_mp->height = q_data->coded_height;
pix_mp->field = V4L2_FIELD_NONE;
pix_mp->pixelformat = info->id;
pix_mp->num_planes = 1;
pix_mp->plane_fmt[0].bytesperline =
q_data->coded_width * info->bytesperline_mult;
pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage;
pix_mp->colorspace = ctx->state.colorspace;
pix_mp->xfer_func = ctx->state.xfer_func;
pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
pix_mp->quantization = ctx->state.quantization;
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
return vidioc_g_fmt(file2ctx(file), f);
}
static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
return vidioc_g_fmt(file2ctx(file), f);
}
static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
struct v4l2_plane_pix_format *plane;
const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
&pixfmt_stateless_fwht : &pixfmt_fwht;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
if (pix->pixelformat != V4L2_PIX_FMT_FWHT &&
pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
info = find_fmt(pix->pixelformat);
pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH);
pix->width = vic_round_dim(pix->width, info->width_div);
pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT);
pix->height = vic_round_dim(pix->height, info->height_div);
pix->field = V4L2_FIELD_NONE;
pix->bytesperline =
pix->width * info->bytesperline_mult;
pix->sizeimage = pix->width * pix->height *
info->sizeimage_mult / info->sizeimage_div;
if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
pix->sizeimage += sizeof(struct fwht_cframe_hdr);
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
plane = pix_mp->plane_fmt;
if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT &&
pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
info = find_fmt(pix_mp->pixelformat);
pix_mp->num_planes = 1;
pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH);
pix_mp->width = vic_round_dim(pix_mp->width, info->width_div);
pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT);
pix_mp->height = vic_round_dim(pix_mp->height,
info->height_div);
pix_mp->field = V4L2_FIELD_NONE;
plane->bytesperline =
pix_mp->width * info->bytesperline_mult;
plane->sizeimage = pix_mp->width * pix_mp->height *
info->sizeimage_mult / info->sizeimage_div;
if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
plane->sizeimage += sizeof(struct fwht_cframe_hdr);
break;
default:
return -EINVAL;
}
return 0;
}
static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(f->fmt.pix.pixelformat)->id;
pix->colorspace = ctx->state.colorspace;
pix->xfer_func = ctx->state.xfer_func;
pix->ycbcr_enc = ctx->state.ycbcr_enc;
pix->quantization = ctx->state.quantization;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
find_fmt(pix_mp->pixelformat)->id;
pix_mp->colorspace = ctx->state.colorspace;
pix_mp->xfer_func = ctx->state.xfer_func;
pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
pix_mp->quantization = ctx->state.quantization;
break;
default:
return -EINVAL;
}
return vidioc_try_fmt(ctx, f);
}
static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
if (multiplanar)
return -EINVAL;
pix = &f->fmt.pix;
if (ctx->is_enc)
pix->pixelformat = find_fmt(pix->pixelformat)->id;
else if (ctx->is_stateless)
pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
else
pix->pixelformat = V4L2_PIX_FMT_FWHT;
if (!pix->colorspace)
pix->colorspace = V4L2_COLORSPACE_REC709;
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
if (!multiplanar)
return -EINVAL;
pix_mp = &f->fmt.pix_mp;
if (ctx->is_enc)
pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id;
else if (ctx->is_stateless)
pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
else
pix_mp->pixelformat = V4L2_PIX_FMT_FWHT;
if (!pix_mp->colorspace)
pix_mp->colorspace = V4L2_COLORSPACE_REC709;
break;
default:
return -EINVAL;
}
return vidioc_try_fmt(ctx, f);
}
static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
{
struct vicodec_q_data *q_data;
struct vb2_queue *vq;
bool fmt_changed = true;
struct v4l2_pix_format_mplane *pix_mp;
struct v4l2_pix_format *pix;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = get_q_data(ctx, f->type);
if (!q_data)
return -EINVAL;
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
fmt_changed =
!q_data->info ||
q_data->info->id != pix->pixelformat ||
q_data->coded_width != pix->width ||
q_data->coded_height != pix->height;
if (vb2_is_busy(vq) && fmt_changed)
return -EBUSY;
if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
q_data->info = &pixfmt_fwht;
else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
q_data->info = &pixfmt_stateless_fwht;
else
q_data->info = find_fmt(pix->pixelformat);
q_data->coded_width = pix->width;
q_data->coded_height = pix->height;
q_data->sizeimage = pix->sizeimage;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
fmt_changed =
!q_data->info ||
q_data->info->id != pix_mp->pixelformat ||
q_data->coded_width != pix_mp->width ||
q_data->coded_height != pix_mp->height;
if (vb2_is_busy(vq) && fmt_changed)
return -EBUSY;
if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
q_data->info = &pixfmt_fwht;
else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
q_data->info = &pixfmt_stateless_fwht;
else
q_data->info = find_fmt(pix_mp->pixelformat);
q_data->coded_width = pix_mp->width;
q_data->coded_height = pix_mp->height;
q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage;
break;
default:
return -EINVAL;
}
dprintk(ctx->dev,
"Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n",
f->type, q_data->coded_width, q_data->coded_height,
q_data->info->id);
return 0;
}
static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
ret = vidioc_try_fmt_vid_cap(file, priv, f);
if (ret)
return ret;
return vidioc_s_fmt(file2ctx(file), f);
}
static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct vicodec_q_data *q_data;
struct vicodec_q_data *q_data_cap;
struct v4l2_pix_format *pix;
struct v4l2_pix_format_mplane *pix_mp;
u32 coded_w = 0, coded_h = 0;
unsigned int size = 0;
int ret;
q_data = get_q_data(ctx, f->type);
q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
ret = vidioc_try_fmt_vid_out(file, priv, f);
if (ret)
return ret;
if (ctx->is_enc) {
struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
&pixfmt_stateless_fwht : &pixfmt_fwht;
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
coded_w = f->fmt.pix.width;
coded_h = f->fmt.pix.height;
} else {
coded_w = f->fmt.pix_mp.width;
coded_h = f->fmt.pix_mp.height;
}
if (vb2_is_busy(vq) && (coded_w != q_data->coded_width ||
coded_h != q_data->coded_height))
return -EBUSY;
size = coded_w * coded_h *
info->sizeimage_mult / info->sizeimage_div;
if (!ctx->is_stateless)
size += sizeof(struct fwht_cframe_hdr);
if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage)
return -EBUSY;
}
ret = vidioc_s_fmt(file2ctx(file), f);
if (!ret) {
if (ctx->is_enc) {
q_data->visible_width = coded_w;
q_data->visible_height = coded_h;
q_data_cap->coded_width = coded_w;
q_data_cap->coded_height = coded_h;
q_data_cap->sizeimage = size;
}
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
pix = &f->fmt.pix;
ctx->state.colorspace = pix->colorspace;
ctx->state.xfer_func = pix->xfer_func;
ctx->state.ycbcr_enc = pix->ycbcr_enc;
ctx->state.quantization = pix->quantization;
break;
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
pix_mp = &f->fmt.pix_mp;
ctx->state.colorspace = pix_mp->colorspace;
ctx->state.xfer_func = pix_mp->xfer_func;
ctx->state.ycbcr_enc = pix_mp->ycbcr_enc;
ctx->state.quantization = pix_mp->quantization;
break;
default:
break;
}
}
return ret;
}
static int vidioc_g_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct vicodec_q_data *q_data;
q_data = get_q_data(ctx, s->type);
if (!q_data)
return -EINVAL;
/*
* encoder supports only cropping on the OUTPUT buffer
* decoder supports only composing on the CAPTURE buffer
*/
if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
switch (s->target) {
case V4L2_SEL_TGT_CROP:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data->visible_width;
s->r.height = q_data->visible_height;
return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data->coded_width;
s->r.height = q_data->coded_height;
return 0;
}
} else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
switch (s->target) {
case V4L2_SEL_TGT_COMPOSE:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data->visible_width;
s->r.height = q_data->visible_height;
return 0;
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data->coded_width;
s->r.height = q_data->coded_height;
return 0;
}
}
return -EINVAL;
}
static int vidioc_s_selection(struct file *file, void *priv,
struct v4l2_selection *s)
{
struct vicodec_ctx *ctx = file2ctx(file);
struct vicodec_q_data *q_data;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
q_data = get_q_data(ctx, s->type);
if (!q_data)
return -EINVAL;
if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
s->r.left = 0;
s->r.top = 0;
q_data->visible_width = clamp(s->r.width, MIN_WIDTH,
q_data->coded_width);
s->r.width = q_data->visible_width;
q_data->visible_height = clamp(s->r.height, MIN_HEIGHT,
q_data->coded_height);
s->r.height = q_data->visible_height;
return 0;
}
static int vicodec_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *ec)
{
struct vicodec_ctx *ctx = file2ctx(file);
int ret;
ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
if (ret < 0)
return ret;
if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
!vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
return 0;
ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, ec);
if (ret < 0)
return ret;
if (ec->cmd == V4L2_ENC_CMD_STOP &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
if (ec->cmd == V4L2_ENC_CMD_START &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
return 0;
}
static int vicodec_decoder_cmd(struct file *file, void *fh,
struct v4l2_decoder_cmd *dc)
{
struct vicodec_ctx *ctx = file2ctx(file);
int ret;
ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
if (ret < 0)
return ret;
if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
!vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
return 0;
ret = v4l2_m2m_ioctl_decoder_cmd(file, fh, dc);
if (ret < 0)
return ret;
if (dc->cmd == V4L2_DEC_CMD_STOP &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
if (dc->cmd == V4L2_DEC_CMD_START &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
return 0;
}
static int vicodec_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
switch (fsize->pixel_format) {
case V4L2_PIX_FMT_FWHT_STATELESS:
break;
case V4L2_PIX_FMT_FWHT:
break;
default:
if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format)
break;
return -EINVAL;
}
if (fsize->index)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
fsize->stepwise.min_width = MIN_WIDTH;
fsize->stepwise.max_width = MAX_WIDTH;
fsize->stepwise.step_width = 8;
fsize->stepwise.min_height = MIN_HEIGHT;
fsize->stepwise.max_height = MAX_HEIGHT;
fsize->stepwise.step_height = 8;
return 0;
}
static int vicodec_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
struct vicodec_ctx *ctx = container_of(fh, struct vicodec_ctx, fh);
switch (sub->type) {
case V4L2_EVENT_SOURCE_CHANGE:
if (ctx->is_enc)
return -EINVAL;
fallthrough;
case V4L2_EVENT_EOS:
if (ctx->is_stateless)
return -EINVAL;
return v4l2_event_subscribe(fh, sub, 0, NULL);
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
}
static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
.vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap,
.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
.vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
.vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
.vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out,
.vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out,
.vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_g_selection = vidioc_g_selection,
.vidioc_s_selection = vidioc_s_selection,
.vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
.vidioc_encoder_cmd = vicodec_encoder_cmd,
.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
.vidioc_decoder_cmd = vicodec_decoder_cmd,
.vidioc_enum_framesizes = vicodec_enum_framesizes,
.vidioc_subscribe_event = vicodec_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
/*
* Queue operations
*/
static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
unsigned int *nplanes, unsigned int sizes[],
struct device *alloc_devs[])
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(vq);
struct vicodec_q_data *q_data = get_q_data(ctx, vq->type);
unsigned int size = q_data->sizeimage;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
sizes[0] = size;
q_data->vb2_sizeimage = size;
return 0;
}
static int vicodec_buf_out_validate(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
vbuf->field = V4L2_FIELD_NONE;
return 0;
}
static int vicodec_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct vicodec_q_data *q_data;
dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
q_data = get_q_data(ctx, vb->vb2_queue->type);
if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
if (vbuf->field == V4L2_FIELD_ANY)
vbuf->field = V4L2_FIELD_NONE;
if (vbuf->field != V4L2_FIELD_NONE) {
dprintk(ctx->dev, "%s field isn't supported\n",
__func__);
return -EINVAL;
}
}
if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) {
dprintk(ctx->dev,
"%s data will not fit into plane (%lu < %lu)\n",
__func__, vb2_plane_size(vb, 0),
(long)q_data->vb2_sizeimage);
return -EINVAL;
}
return 0;
}
static void vicodec_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
u8 *p = p_src;
struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_OUTPUT);
struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
bool header_valid = false;
static const struct v4l2_event rs_event = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) &&
vb2_is_streaming(vb->vb2_queue) &&
v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) {
unsigned int i;
for (i = 0; i < vb->num_planes; i++)
vb2_set_plane_payload(vb, i, 0);
vbuf->field = V4L2_FIELD_NONE;
vbuf->sequence =
get_q_data(ctx, vb->vb2_queue->type)->sequence++;
v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf);
v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
return;
}
/* buf_queue handles only the first source change event */
if (ctx->first_source_change_sent) {
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
return;
}
/*
* if both queues are streaming, the source change event is
* handled in job_ready
*/
if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) {
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
return;
}
/*
* source change event is relevant only for the stateful decoder
* in the compressed stream
*/
if (ctx->is_stateless || ctx->is_enc ||
V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
return;
}
do {
enum vb2_buffer_state state =
get_next_header(ctx, &p, p_src + sz - p);
if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
v4l2_m2m_buf_done(vbuf, state);
return;
}
header_valid = is_header_valid(&ctx->state.header);
/*
* p points right after the end of the header in the
* buffer. If the header is invalid we set p to point
* to the next byte after the start of the header
*/
if (!header_valid) {
p = p - sizeof(struct fwht_cframe_hdr) + 1;
if (p < p_src)
p = p_src;
ctx->header_size = 0;
ctx->comp_magic_cnt = 0;
}
} while (!header_valid);
ctx->cur_buf_offset = p - p_src;
update_capture_data_from_header(ctx);
ctx->first_source_change_sent = true;
v4l2_event_queue_fh(&ctx->fh, &rs_event);
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static void vicodec_return_bufs(struct vb2_queue *q, u32 state)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
struct vb2_v4l2_buffer *vbuf;
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(q->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (vbuf == NULL)
return;
v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
&ctx->hdl);
spin_lock(ctx->lock);
v4l2_m2m_buf_done(vbuf, state);
spin_unlock(ctx->lock);
}
}
static unsigned int total_frame_size(struct vicodec_q_data *q_data)
{
unsigned int size;
unsigned int chroma_div;
if (!q_data->info) {
WARN_ON(1);
return 0;
}
size = q_data->coded_width * q_data->coded_height;
chroma_div = q_data->info->width_div * q_data->info->height_div;
if (q_data->info->components_num == 4)
return 2 * size + 2 * (size / chroma_div);
else if (q_data->info->components_num == 3)
return size + 2 * (size / chroma_div);
return size;
}
static int vicodec_start_streaming(struct vb2_queue *q,
unsigned int count)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
struct vicodec_q_data *q_data = get_q_data(ctx, q->type);
struct v4l2_fwht_state *state = &ctx->state;
const struct v4l2_fwht_pixfmt_info *info = q_data->info;
unsigned int size = q_data->coded_width * q_data->coded_height;
unsigned int chroma_div;
unsigned int total_planes_size;
u8 *new_comp_frame = NULL;
chroma_div = info->width_div * info->height_div;
q_data->sequence = 0;
v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q);
state->gop_cnt = 0;
if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
(V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc))
return 0;
if (info->id == V4L2_PIX_FMT_FWHT ||
info->id == V4L2_PIX_FMT_FWHT_STATELESS) {
vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
return -EINVAL;
}
total_planes_size = total_frame_size(q_data);
ctx->comp_max_size = total_planes_size;
state->visible_width = q_data->visible_width;
state->visible_height = q_data->visible_height;
state->coded_width = q_data->coded_width;
state->coded_height = q_data->coded_height;
state->stride = q_data->coded_width *
info->bytesperline_mult;
if (ctx->is_stateless) {
state->ref_stride = state->stride;
return 0;
}
state->ref_stride = q_data->coded_width * info->luma_alpha_step;
state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL);
state->ref_frame.luma = state->ref_frame.buf;
new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
if (!state->ref_frame.luma || !new_comp_frame) {
kvfree(state->ref_frame.luma);
kvfree(new_comp_frame);
vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
return -ENOMEM;
}
/*
* if state->compressed_frame was already allocated then
* it contain data of the first frame of the new resolution
*/
if (state->compressed_frame) {
if (ctx->comp_size > ctx->comp_max_size)
ctx->comp_size = ctx->comp_max_size;
memcpy(new_comp_frame,
state->compressed_frame, ctx->comp_size);
}
kvfree(state->compressed_frame);
state->compressed_frame = new_comp_frame;
if (info->components_num < 3) {
state->ref_frame.cb = NULL;
state->ref_frame.cr = NULL;
state->ref_frame.alpha = NULL;
return 0;
}
state->ref_frame.cb = state->ref_frame.luma + size;
state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
if (info->components_num == 4)
state->ref_frame.alpha =
state->ref_frame.cr + size / chroma_div;
else
state->ref_frame.alpha = NULL;
return 0;
}
static void vicodec_stop_streaming(struct vb2_queue *q)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q);
if (V4L2_TYPE_IS_OUTPUT(q->type) &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx))
v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type))
ctx->first_source_change_sent = false;
if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
(V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) {
if (!ctx->is_stateless)
kvfree(ctx->state.ref_frame.buf);
ctx->state.ref_frame.buf = NULL;
ctx->state.ref_frame.luma = NULL;
ctx->comp_max_size = 0;
ctx->source_changed = false;
}
if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) {
ctx->cur_buf_offset = 0;
ctx->comp_size = 0;
ctx->header_size = 0;
ctx->comp_magic_cnt = 0;
ctx->comp_has_frame = false;
ctx->comp_has_next_frame = false;
}
}
static void vicodec_buf_request_complete(struct vb2_buffer *vb)
{
struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl);
}
static const struct vb2_ops vicodec_qops = {
.queue_setup = vicodec_queue_setup,
.buf_out_validate = vicodec_buf_out_validate,
.buf_prepare = vicodec_buf_prepare,
.buf_queue = vicodec_buf_queue,
.buf_request_complete = vicodec_buf_request_complete,
.start_streaming = vicodec_start_streaming,
.stop_streaming = vicodec_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct vicodec_ctx *ctx = priv;
int ret;
src_vq->type = (multiplanar ?
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
V4L2_BUF_TYPE_VIDEO_OUTPUT);
src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
src_vq->ops = &vicodec_qops;
src_vq->mem_ops = &vb2_vmalloc_memops;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
if (ctx->is_enc)
src_vq->lock = &ctx->dev->stateful_enc.mutex;
else if (ctx->is_stateless)
src_vq->lock = &ctx->dev->stateless_dec.mutex;
else
src_vq->lock = &ctx->dev->stateful_dec.mutex;
src_vq->supports_requests = ctx->is_stateless;
src_vq->requires_requests = ctx->is_stateless;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->type = (multiplanar ?
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &vicodec_qops;
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = src_vq->lock;
return vb2_queue_init(dst_vq);
}
static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct vicodec_ctx *ctx = container_of(ctrl->handler,
struct vicodec_ctx, hdl);
const struct v4l2_ctrl_fwht_params *params;
struct vicodec_q_data *q_dst = get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_CAPTURE);
switch (ctrl->id) {
case V4L2_CID_STATELESS_FWHT_PARAMS:
if (!q_dst->info)
return -EINVAL;
params = ctrl->p_new.p_fwht_params;
if (params->width > q_dst->coded_width ||
params->width < MIN_WIDTH ||
params->height > q_dst->coded_height ||
params->height < MIN_HEIGHT)
return -EINVAL;
if (!validate_by_version(params->flags, params->version))
return -EINVAL;
if (!validate_stateless_params_flags(params, q_dst->info))
return -EINVAL;
return 0;
default:
return 0;
}
return 0;
}
static void update_header_from_stateless_params(struct vicodec_ctx *ctx,
const struct v4l2_ctrl_fwht_params *params)
{
struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
p_hdr->magic1 = FWHT_MAGIC1;
p_hdr->magic2 = FWHT_MAGIC2;
p_hdr->version = htonl(params->version);
p_hdr->width = htonl(params->width);
p_hdr->height = htonl(params->height);
p_hdr->flags = htonl(params->flags);
p_hdr->colorspace = htonl(params->colorspace);
p_hdr->xfer_func = htonl(params->xfer_func);
p_hdr->ycbcr_enc = htonl(params->ycbcr_enc);
p_hdr->quantization = htonl(params->quantization);
}
static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vicodec_ctx *ctx = container_of(ctrl->handler,
struct vicodec_ctx, hdl);
const struct v4l2_ctrl_fwht_params *params;
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
ctx->state.gop_size = ctrl->val;
return 0;
case V4L2_CID_FWHT_I_FRAME_QP:
ctx->state.i_frame_qp = ctrl->val;
return 0;
case V4L2_CID_FWHT_P_FRAME_QP:
ctx->state.p_frame_qp = ctrl->val;
return 0;
case V4L2_CID_STATELESS_FWHT_PARAMS:
params = ctrl->p_new.p_fwht_params;
update_header_from_stateless_params(ctx, params);
ctx->state.ref_frame_ts = params->backward_ref_ts;
return 0;
}
return -EINVAL;
}
static const struct v4l2_ctrl_ops vicodec_ctrl_ops = {
.s_ctrl = vicodec_s_ctrl,
.try_ctrl = vicodec_try_ctrl,
};
static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = {
.ops = &vicodec_ctrl_ops,
.id = V4L2_CID_STATELESS_FWHT_PARAMS,
.elem_size = sizeof(struct v4l2_ctrl_fwht_params),
};
/*
* File operations
*/
static int vicodec_open(struct file *file)
{
const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0);
struct video_device *vfd = video_devdata(file);
struct vicodec_dev *dev = video_drvdata(file);
struct vicodec_ctx *ctx = NULL;
struct v4l2_ctrl_handler *hdl;
unsigned int raw_size;
unsigned int comp_size;
int rc = 0;
if (mutex_lock_interruptible(vfd->lock))
return -ERESTARTSYS;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
rc = -ENOMEM;
goto open_unlock;
}
if (vfd == &dev->stateful_enc.vfd)
ctx->is_enc = true;
else if (vfd == &dev->stateless_dec.vfd)
ctx->is_stateless = true;
v4l2_fh_init(&ctx->fh, video_devdata(file));
file->private_data = &ctx->fh;
ctx->dev = dev;
hdl = &ctx->hdl;
v4l2_ctrl_handler_init(hdl, 5);
v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1, 16, 1, 10);
v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP,
1, 31, 1, 20);
v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP,
1, 31, 1, 20);
if (ctx->is_enc)
v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops,
V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 1, 1, 1);
if (ctx->is_stateless)
v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL);
if (hdl->error) {
rc = hdl->error;
v4l2_ctrl_handler_free(hdl);
kfree(ctx);
goto open_unlock;
}
ctx->fh.ctrl_handler = hdl;
v4l2_ctrl_handler_setup(hdl);
if (ctx->is_enc)
ctx->q_data[V4L2_M2M_SRC].info = info;
else if (ctx->is_stateless)
ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht;
else
ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht;
ctx->q_data[V4L2_M2M_SRC].coded_width = 1280;
ctx->q_data[V4L2_M2M_SRC].coded_height = 720;
ctx->q_data[V4L2_M2M_SRC].visible_width = 1280;
ctx->q_data[V4L2_M2M_SRC].visible_height = 720;
raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div;
comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult /
pixfmt_fwht.sizeimage_div;
if (ctx->is_enc)
ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size;
else if (ctx->is_stateless)
ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size;
else
ctx->q_data[V4L2_M2M_SRC].sizeimage =
comp_size + sizeof(struct fwht_cframe_hdr);
ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
if (ctx->is_enc) {
ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht;
ctx->q_data[V4L2_M2M_DST].sizeimage =
comp_size + sizeof(struct fwht_cframe_hdr);
} else {
ctx->q_data[V4L2_M2M_DST].info = info;
ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size;
}
ctx->state.colorspace = V4L2_COLORSPACE_REC709;
if (ctx->is_enc) {
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev,
ctx, &queue_init);
ctx->lock = &dev->stateful_enc.lock;
} else if (ctx->is_stateless) {
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev,
ctx, &queue_init);
ctx->lock = &dev->stateless_dec.lock;
} else {
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev,
ctx, &queue_init);
ctx->lock = &dev->stateful_dec.lock;
}
if (IS_ERR(ctx->fh.m2m_ctx)) {
rc = PTR_ERR(ctx->fh.m2m_ctx);
v4l2_ctrl_handler_free(hdl);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
goto open_unlock;
}
v4l2_fh_add(&ctx->fh);
open_unlock:
mutex_unlock(vfd->lock);
return rc;
}
static int vicodec_release(struct file *file)
{
struct video_device *vfd = video_devdata(file);
struct vicodec_ctx *ctx = file2ctx(file);
mutex_lock(vfd->lock);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
mutex_unlock(vfd->lock);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
v4l2_ctrl_handler_free(&ctx->hdl);
kvfree(ctx->state.compressed_frame);
kfree(ctx);
return 0;
}
static int vicodec_request_validate(struct media_request *req)
{
struct media_request_object *obj;
struct v4l2_ctrl_handler *parent_hdl, *hdl;
struct vicodec_ctx *ctx = NULL;
struct v4l2_ctrl *ctrl;
unsigned int count;
list_for_each_entry(obj, &req->objects, list) {
struct vb2_buffer *vb;
if (vb2_request_object_is_buffer(obj)) {
vb = container_of(obj, struct vb2_buffer, req_obj);
ctx = vb2_get_drv_priv(vb->vb2_queue);
break;
}
}
if (!ctx) {
pr_err("No buffer was provided with the request\n");
return -ENOENT;
}
count = vb2_request_buffer_cnt(req);
if (!count) {
v4l2_info(&ctx->dev->v4l2_dev,
"No buffer was provided with the request\n");
return -ENOENT;
} else if (count > 1) {
v4l2_info(&ctx->dev->v4l2_dev,
"More than one buffer was provided with the request\n");
return -EINVAL;
}
parent_hdl = &ctx->hdl;
hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl);
if (!hdl) {
v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n");
return -ENOENT;
}
ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl,
vicodec_ctrl_stateless_state.id);
v4l2_ctrl_request_hdl_put(hdl);
if (!ctrl) {
v4l2_info(&ctx->dev->v4l2_dev,
"Missing required codec control\n");
return -ENOENT;
}
return vb2_request_validate(req);
}
static const struct v4l2_file_operations vicodec_fops = {
.owner = THIS_MODULE,
.open = vicodec_open,
.release = vicodec_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct video_device vicodec_videodev = {
.name = VICODEC_NAME,
.vfl_dir = VFL_DIR_M2M,
.fops = &vicodec_fops,
.ioctl_ops = &vicodec_ioctl_ops,
.minor = -1,
.release = video_device_release_empty,
};
static const struct media_device_ops vicodec_m2m_media_ops = {
.req_validate = vicodec_request_validate,
.req_queue = v4l2_m2m_request_queue,
};
static const struct v4l2_m2m_ops m2m_ops = {
.device_run = device_run,
.job_ready = job_ready,
};
static int register_instance(struct vicodec_dev *dev,
struct vicodec_dev_instance *dev_instance,
const char *name, bool is_enc)
{
struct video_device *vfd;
int ret;
spin_lock_init(&dev_instance->lock);
mutex_init(&dev_instance->mutex);
dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops);
if (IS_ERR(dev_instance->m2m_dev)) {
v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n");
return PTR_ERR(dev_instance->m2m_dev);
}
dev_instance->vfd = vicodec_videodev;
vfd = &dev_instance->vfd;
vfd->lock = &dev_instance->mutex;
vfd->v4l2_dev = &dev->v4l2_dev;
strscpy(vfd->name, name, sizeof(vfd->name));
vfd->device_caps = V4L2_CAP_STREAMING |
(multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M);
if (is_enc) {
v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
} else {
v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
}
video_set_drvdata(vfd, dev);
ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name);
v4l2_m2m_release(dev_instance->m2m_dev);
return ret;
}
v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n",
name, vfd->num);
return 0;
}
static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev)
{
struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev);
v4l2_device_unregister(&dev->v4l2_dev);
v4l2_m2m_release(dev->stateful_enc.m2m_dev);
v4l2_m2m_release(dev->stateful_dec.m2m_dev);
v4l2_m2m_release(dev->stateless_dec.m2m_dev);
#ifdef CONFIG_MEDIA_CONTROLLER
media_device_cleanup(&dev->mdev);
#endif
kfree(dev);
}
static int vicodec_probe(struct platform_device *pdev)
{
struct vicodec_dev *dev;
int ret;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret)
goto free_dev;
dev->v4l2_dev.release = vicodec_v4l2_dev_release;
#ifdef CONFIG_MEDIA_CONTROLLER
dev->mdev.dev = &pdev->dev;
strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model));
strscpy(dev->mdev.bus_info, "platform:vicodec",
sizeof(dev->mdev.bus_info));
media_device_init(&dev->mdev);
dev->mdev.ops = &vicodec_m2m_media_ops;
dev->v4l2_dev.mdev = &dev->mdev;
#endif
platform_set_drvdata(pdev, dev);
ret = register_instance(dev, &dev->stateful_enc, "stateful-encoder",
true);
if (ret)
goto unreg_dev;
ret = register_instance(dev, &dev->stateful_dec, "stateful-decoder",
false);
if (ret)
goto unreg_sf_enc;
ret = register_instance(dev, &dev->stateless_dec, "stateless-decoder",
false);
if (ret)
goto unreg_sf_dec;
#ifdef CONFIG_MEDIA_CONTROLLER
ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev,
&dev->stateful_enc.vfd,
MEDIA_ENT_F_PROC_VIDEO_ENCODER);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n");
goto unreg_m2m;
}
ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev,
&dev->stateful_dec.vfd,
MEDIA_ENT_F_PROC_VIDEO_DECODER);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for dec\n");
goto unreg_m2m_sf_enc_mc;
}
ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev,
&dev->stateless_dec.vfd,
MEDIA_ENT_F_PROC_VIDEO_DECODER);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n");
goto unreg_m2m_sf_dec_mc;
}
ret = media_device_register(&dev->mdev);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
goto unreg_m2m_sl_dec_mc;
}
#endif
return 0;
#ifdef CONFIG_MEDIA_CONTROLLER
unreg_m2m_sl_dec_mc:
v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
unreg_m2m_sf_dec_mc:
v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
unreg_m2m_sf_enc_mc:
v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
unreg_m2m:
video_unregister_device(&dev->stateless_dec.vfd);
v4l2_m2m_release(dev->stateless_dec.m2m_dev);
#endif
unreg_sf_dec:
video_unregister_device(&dev->stateful_dec.vfd);
v4l2_m2m_release(dev->stateful_dec.m2m_dev);
unreg_sf_enc:
video_unregister_device(&dev->stateful_enc.vfd);
v4l2_m2m_release(dev->stateful_enc.m2m_dev);
unreg_dev:
v4l2_device_unregister(&dev->v4l2_dev);
free_dev:
kfree(dev);
return ret;
}
static int vicodec_remove(struct platform_device *pdev)
{
struct vicodec_dev *dev = platform_get_drvdata(pdev);
v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME);
#ifdef CONFIG_MEDIA_CONTROLLER
media_device_unregister(&dev->mdev);
v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
#endif
video_unregister_device(&dev->stateful_enc.vfd);
video_unregister_device(&dev->stateful_dec.vfd);
video_unregister_device(&dev->stateless_dec.vfd);
v4l2_device_put(&dev->v4l2_dev);
return 0;
}
static struct platform_driver vicodec_pdrv = {
.probe = vicodec_probe,
.remove = vicodec_remove,
.driver = {
.name = VICODEC_NAME,
},
};
static void __exit vicodec_exit(void)
{
platform_driver_unregister(&vicodec_pdrv);
platform_device_unregister(&vicodec_pdev);
}
static int __init vicodec_init(void)
{
int ret;
ret = platform_device_register(&vicodec_pdev);
if (ret)
return ret;
ret = platform_driver_register(&vicodec_pdrv);
if (ret)
platform_device_unregister(&vicodec_pdev);
return ret;
}
module_init(vicodec_init);
module_exit(vicodec_exit);