diff options
Diffstat (limited to 'drivers/media/test-drivers/vicodec/vicodec-core.c')
| -rw-r--r-- | drivers/media/test-drivers/vicodec/vicodec-core.c | 2233 |
1 files changed, 2233 insertions, 0 deletions
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c new file mode 100644 index 000000000..1d1bee111 --- /dev/null +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c @@ -0,0 +1,2233 @@ +// 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); 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