1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * A virtual codec example device. 4 * 5 * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved. 6 * 7 * This is a virtual codec device driver for testing the codec framework. 8 * It simulates a device that uses memory buffers for both source and 9 * destination and encodes or decodes the data. 10 */ 11 12 #include <linux/module.h> 13 #include <linux/delay.h> 14 #include <linux/fs.h> 15 #include <linux/sched.h> 16 #include <linux/slab.h> 17 18 #include <linux/platform_device.h> 19 #include <media/v4l2-mem2mem.h> 20 #include <media/v4l2-device.h> 21 #include <media/v4l2-ioctl.h> 22 #include <media/v4l2-ctrls.h> 23 #include <media/v4l2-event.h> 24 #include <media/videobuf2-vmalloc.h> 25 26 #include "codec-v4l2-fwht.h" 27 28 MODULE_DESCRIPTION("Virtual codec device"); 29 MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>"); 30 MODULE_LICENSE("GPL v2"); 31 32 static bool multiplanar; 33 module_param(multiplanar, bool, 0444); 34 MODULE_PARM_DESC(multiplanar, 35 " use multi-planar API instead of single-planar API"); 36 37 static unsigned int debug; 38 module_param(debug, uint, 0644); 39 MODULE_PARM_DESC(debug, " activates debug info"); 40 41 #define VICODEC_NAME "vicodec" 42 #define MAX_WIDTH 4096U 43 #define MIN_WIDTH 640U 44 #define MAX_HEIGHT 2160U 45 #define MIN_HEIGHT 360U 46 47 #define dprintk(dev, fmt, arg...) \ 48 v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) 49 50 51 struct pixfmt_info { 52 u32 id; 53 unsigned int bytesperline_mult; 54 unsigned int sizeimage_mult; 55 unsigned int sizeimage_div; 56 unsigned int luma_step; 57 unsigned int chroma_step; 58 /* Chroma plane subsampling */ 59 unsigned int width_div; 60 unsigned int height_div; 61 }; 62 63 static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = { 64 V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1 65 }; 66 67 static const struct v4l2_fwht_pixfmt_info pixfmt_stateless_fwht = { 68 V4L2_PIX_FMT_FWHT_STATELESS, 0, 3, 1, 1, 1, 1, 1, 0, 1 69 }; 70 71 static void vicodec_dev_release(struct device *dev) 72 { 73 } 74 75 static struct platform_device vicodec_pdev = { 76 .name = VICODEC_NAME, 77 .dev.release = vicodec_dev_release, 78 }; 79 80 /* Per-queue, driver-specific private data */ 81 struct vicodec_q_data { 82 unsigned int coded_width; 83 unsigned int coded_height; 84 unsigned int visible_width; 85 unsigned int visible_height; 86 unsigned int sizeimage; 87 unsigned int vb2_sizeimage; 88 unsigned int sequence; 89 const struct v4l2_fwht_pixfmt_info *info; 90 }; 91 92 enum { 93 V4L2_M2M_SRC = 0, 94 V4L2_M2M_DST = 1, 95 }; 96 97 struct vicodec_dev_instance { 98 struct video_device vfd; 99 struct mutex mutex; 100 spinlock_t lock; 101 struct v4l2_m2m_dev *m2m_dev; 102 }; 103 104 struct vicodec_dev { 105 struct v4l2_device v4l2_dev; 106 struct vicodec_dev_instance stateful_enc; 107 struct vicodec_dev_instance stateful_dec; 108 struct vicodec_dev_instance stateless_dec; 109 #ifdef CONFIG_MEDIA_CONTROLLER 110 struct media_device mdev; 111 #endif 112 113 }; 114 115 struct vicodec_ctx { 116 struct v4l2_fh fh; 117 struct vicodec_dev *dev; 118 bool is_enc; 119 bool is_stateless; 120 spinlock_t *lock; 121 122 struct v4l2_ctrl_handler hdl; 123 124 /* Source and destination queue data */ 125 struct vicodec_q_data q_data[2]; 126 struct v4l2_fwht_state state; 127 128 u32 cur_buf_offset; 129 u32 comp_max_size; 130 u32 comp_size; 131 u32 header_size; 132 u32 comp_magic_cnt; 133 bool comp_has_frame; 134 bool comp_has_next_frame; 135 bool first_source_change_sent; 136 bool source_changed; 137 }; 138 139 static const struct v4l2_event vicodec_eos_event = { 140 .type = V4L2_EVENT_EOS 141 }; 142 143 static inline struct vicodec_ctx *file2ctx(struct file *file) 144 { 145 return container_of(file->private_data, struct vicodec_ctx, fh); 146 } 147 148 static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx, 149 enum v4l2_buf_type type) 150 { 151 switch (type) { 152 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 153 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 154 return &ctx->q_data[V4L2_M2M_SRC]; 155 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 156 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 157 return &ctx->q_data[V4L2_M2M_DST]; 158 default: 159 break; 160 } 161 return NULL; 162 } 163 164 static void copy_cap_to_ref(const u8 *cap, const struct v4l2_fwht_pixfmt_info *info, 165 struct v4l2_fwht_state *state) 166 { 167 int plane_idx; 168 u8 *p_ref = state->ref_frame.buf; 169 unsigned int cap_stride = state->stride; 170 unsigned int ref_stride = state->ref_stride; 171 172 for (plane_idx = 0; plane_idx < info->planes_num; plane_idx++) { 173 int i; 174 unsigned int h_div = (plane_idx == 1 || plane_idx == 2) ? 175 info->height_div : 1; 176 const u8 *row_cap = cap; 177 u8 *row_ref = p_ref; 178 179 if (info->planes_num == 3 && plane_idx == 1) { 180 cap_stride /= 2; 181 ref_stride /= 2; 182 } 183 184 if (plane_idx == 1 && 185 (info->id == V4L2_PIX_FMT_NV24 || 186 info->id == V4L2_PIX_FMT_NV42)) { 187 cap_stride *= 2; 188 ref_stride *= 2; 189 } 190 191 for (i = 0; i < state->visible_height / h_div; i++) { 192 memcpy(row_ref, row_cap, ref_stride); 193 row_ref += ref_stride; 194 row_cap += cap_stride; 195 } 196 cap += cap_stride * (state->coded_height / h_div); 197 p_ref += ref_stride * (state->coded_height / h_div); 198 } 199 } 200 201 static bool validate_by_version(unsigned int flags, unsigned int version) 202 { 203 if (!version || version > V4L2_FWHT_VERSION) 204 return false; 205 206 if (version >= 2) { 207 unsigned int components_num = 1 + 208 ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 209 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 210 unsigned int pixenc = flags & V4L2_FWHT_FL_PIXENC_MSK; 211 212 if (components_num == 0 || components_num > 4 || !pixenc) 213 return false; 214 } 215 return true; 216 } 217 218 static bool validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params *params, 219 const struct v4l2_fwht_pixfmt_info *cur_info) 220 { 221 unsigned int width_div = 222 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 223 unsigned int height_div = 224 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 225 unsigned int components_num = 3; 226 unsigned int pixenc = 0; 227 228 if (params->version < 3) 229 return false; 230 231 components_num = 1 + ((params->flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 232 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 233 pixenc = (params->flags & V4L2_FWHT_FL_PIXENC_MSK); 234 if (v4l2_fwht_validate_fmt(cur_info, width_div, height_div, 235 components_num, pixenc)) 236 return true; 237 return false; 238 } 239 240 241 static void update_state_from_header(struct vicodec_ctx *ctx) 242 { 243 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 244 245 ctx->state.visible_width = ntohl(p_hdr->width); 246 ctx->state.visible_height = ntohl(p_hdr->height); 247 ctx->state.colorspace = ntohl(p_hdr->colorspace); 248 ctx->state.xfer_func = ntohl(p_hdr->xfer_func); 249 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc); 250 ctx->state.quantization = ntohl(p_hdr->quantization); 251 } 252 253 static int device_process(struct vicodec_ctx *ctx, 254 struct vb2_v4l2_buffer *src_vb, 255 struct vb2_v4l2_buffer *dst_vb) 256 { 257 struct vicodec_dev *dev = ctx->dev; 258 struct v4l2_fwht_state *state = &ctx->state; 259 u8 *p_src, *p_dst; 260 int ret = 0; 261 262 if (ctx->is_enc || ctx->is_stateless) 263 p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0); 264 else 265 p_src = state->compressed_frame; 266 267 if (ctx->is_stateless) { 268 struct media_request *src_req = src_vb->vb2_buf.req_obj.req; 269 270 ret = v4l2_ctrl_request_setup(src_req, &ctx->hdl); 271 if (ret) 272 return ret; 273 update_state_from_header(ctx); 274 275 ctx->state.header.size = 276 htonl(vb2_get_plane_payload(&src_vb->vb2_buf, 0)); 277 /* 278 * set the reference buffer from the reference timestamp 279 * only if this is a P-frame 280 */ 281 if (!(ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)) { 282 struct vb2_buffer *ref_vb2_buf; 283 struct vb2_queue *vq_cap = 284 v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 285 V4L2_BUF_TYPE_VIDEO_CAPTURE); 286 287 ref_vb2_buf = vb2_find_buffer(vq_cap, ctx->state.ref_frame_ts); 288 if (!ref_vb2_buf) 289 return -EINVAL; 290 if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR) 291 ret = -EINVAL; 292 ctx->state.ref_frame.buf = 293 vb2_plane_vaddr(ref_vb2_buf, 0); 294 } else { 295 ctx->state.ref_frame.buf = NULL; 296 } 297 } 298 p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0); 299 if (!p_src || !p_dst) { 300 v4l2_err(&dev->v4l2_dev, 301 "Acquiring kernel pointers to buffers failed\n"); 302 return -EFAULT; 303 } 304 305 if (ctx->is_enc) { 306 struct vicodec_q_data *q_src; 307 int comp_sz_or_errcode; 308 309 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 310 state->info = q_src->info; 311 comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst); 312 if (comp_sz_or_errcode < 0) 313 return comp_sz_or_errcode; 314 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode); 315 } else { 316 struct vicodec_q_data *q_dst; 317 unsigned int comp_frame_size = ntohl(ctx->state.header.size); 318 319 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 320 if (comp_frame_size > ctx->comp_max_size) 321 return -EINVAL; 322 state->info = q_dst->info; 323 ret = v4l2_fwht_decode(state, p_src, p_dst); 324 if (ret < 0) 325 return ret; 326 if (!ctx->is_stateless) 327 copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state); 328 329 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage); 330 if (ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME) 331 dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME; 332 else 333 dst_vb->flags |= V4L2_BUF_FLAG_PFRAME; 334 } 335 return ret; 336 } 337 338 /* 339 * mem2mem callbacks 340 */ 341 static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx, 342 u8 **pp, u32 sz) 343 { 344 static const u8 magic[] = { 345 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 346 }; 347 u8 *p = *pp; 348 u32 state; 349 u8 *header = (u8 *)&ctx->state.header; 350 351 state = VB2_BUF_STATE_DONE; 352 353 if (!ctx->header_size) { 354 state = VB2_BUF_STATE_ERROR; 355 for (; p < *pp + sz; p++) { 356 u32 copy; 357 358 p = memchr(p, magic[ctx->comp_magic_cnt], 359 *pp + sz - p); 360 if (!p) { 361 ctx->comp_magic_cnt = 0; 362 p = *pp + sz; 363 break; 364 } 365 copy = sizeof(magic) - ctx->comp_magic_cnt; 366 if (*pp + sz - p < copy) 367 copy = *pp + sz - p; 368 369 memcpy(header + ctx->comp_magic_cnt, p, copy); 370 ctx->comp_magic_cnt += copy; 371 if (!memcmp(header, magic, ctx->comp_magic_cnt)) { 372 p += copy; 373 state = VB2_BUF_STATE_DONE; 374 break; 375 } 376 ctx->comp_magic_cnt = 0; 377 } 378 if (ctx->comp_magic_cnt < sizeof(magic)) { 379 *pp = p; 380 return state; 381 } 382 ctx->header_size = sizeof(magic); 383 } 384 385 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 386 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size; 387 388 if (*pp + sz - p < copy) 389 copy = *pp + sz - p; 390 391 memcpy(header + ctx->header_size, p, copy); 392 p += copy; 393 ctx->header_size += copy; 394 } 395 *pp = p; 396 return state; 397 } 398 399 /* device_run() - prepares and starts the device */ 400 static void device_run(void *priv) 401 { 402 struct vicodec_ctx *ctx = priv; 403 struct vicodec_dev *dev = ctx->dev; 404 struct vb2_v4l2_buffer *src_buf, *dst_buf; 405 struct vicodec_q_data *q_src, *q_dst; 406 u32 state; 407 struct media_request *src_req; 408 409 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 410 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 411 src_req = src_buf->vb2_buf.req_obj.req; 412 413 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 414 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 415 416 state = VB2_BUF_STATE_DONE; 417 if (device_process(ctx, src_buf, dst_buf)) 418 state = VB2_BUF_STATE_ERROR; 419 else 420 dst_buf->sequence = q_dst->sequence++; 421 dst_buf->flags &= ~V4L2_BUF_FLAG_LAST; 422 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); 423 424 spin_lock(ctx->lock); 425 if (!ctx->comp_has_next_frame && 426 v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) { 427 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 428 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 429 v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx); 430 } 431 if (ctx->is_enc || ctx->is_stateless) { 432 src_buf->sequence = q_src->sequence++; 433 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 434 v4l2_m2m_buf_done(src_buf, state); 435 } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) { 436 src_buf->sequence = q_src->sequence++; 437 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 438 v4l2_m2m_buf_done(src_buf, state); 439 ctx->cur_buf_offset = 0; 440 ctx->comp_has_next_frame = false; 441 } 442 v4l2_m2m_buf_done(dst_buf, state); 443 444 ctx->comp_size = 0; 445 ctx->header_size = 0; 446 ctx->comp_magic_cnt = 0; 447 ctx->comp_has_frame = false; 448 spin_unlock(ctx->lock); 449 if (ctx->is_stateless && src_req) 450 v4l2_ctrl_request_complete(src_req, &ctx->hdl); 451 452 if (ctx->is_enc) 453 v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx); 454 else if (ctx->is_stateless) 455 v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev, 456 ctx->fh.m2m_ctx); 457 else 458 v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx); 459 } 460 461 static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state) 462 { 463 struct vb2_v4l2_buffer *src_buf; 464 struct vicodec_q_data *q_src; 465 466 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 467 spin_lock(ctx->lock); 468 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 469 src_buf->sequence = q_src->sequence++; 470 v4l2_m2m_buf_done(src_buf, state); 471 ctx->cur_buf_offset = 0; 472 spin_unlock(ctx->lock); 473 } 474 475 static const struct v4l2_fwht_pixfmt_info * 476 info_from_header(const struct fwht_cframe_hdr *p_hdr) 477 { 478 unsigned int flags = ntohl(p_hdr->flags); 479 unsigned int width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 480 unsigned int height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 481 unsigned int components_num = 3; 482 unsigned int pixenc = 0; 483 unsigned int version = ntohl(p_hdr->version); 484 485 if (version >= 2) { 486 components_num = 1 + ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 487 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 488 pixenc = (flags & V4L2_FWHT_FL_PIXENC_MSK); 489 } 490 return v4l2_fwht_find_nth_fmt(width_div, height_div, 491 components_num, pixenc, 0); 492 } 493 494 static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr) 495 { 496 const struct v4l2_fwht_pixfmt_info *info; 497 unsigned int w = ntohl(p_hdr->width); 498 unsigned int h = ntohl(p_hdr->height); 499 unsigned int version = ntohl(p_hdr->version); 500 unsigned int flags = ntohl(p_hdr->flags); 501 502 if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT) 503 return false; 504 505 if (!validate_by_version(flags, version)) 506 return false; 507 508 info = info_from_header(p_hdr); 509 if (!info) 510 return false; 511 return true; 512 } 513 514 static void update_capture_data_from_header(struct vicodec_ctx *ctx) 515 { 516 struct vicodec_q_data *q_dst = get_q_data(ctx, 517 V4L2_BUF_TYPE_VIDEO_CAPTURE); 518 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 519 const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr); 520 unsigned int flags = ntohl(p_hdr->flags); 521 unsigned int hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 522 unsigned int hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 523 524 /* 525 * This function should not be used by a stateless codec since 526 * it changes values in q_data that are not request specific 527 */ 528 WARN_ON(ctx->is_stateless); 529 530 q_dst->info = info; 531 q_dst->visible_width = ntohl(p_hdr->width); 532 q_dst->visible_height = ntohl(p_hdr->height); 533 q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div); 534 q_dst->coded_height = vic_round_dim(q_dst->visible_height, 535 hdr_height_div); 536 537 q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height * 538 q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div; 539 ctx->state.colorspace = ntohl(p_hdr->colorspace); 540 541 ctx->state.xfer_func = ntohl(p_hdr->xfer_func); 542 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc); 543 ctx->state.quantization = ntohl(p_hdr->quantization); 544 } 545 546 static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf, 547 const struct vb2_v4l2_buffer *src_buf, 548 struct vicodec_ctx *ctx) 549 { 550 struct vicodec_q_data *q_dst = get_q_data(ctx, 551 V4L2_BUF_TYPE_VIDEO_CAPTURE); 552 553 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0); 554 dst_buf->sequence = q_dst->sequence++; 555 556 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc); 557 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 558 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); 559 } 560 561 static int job_ready(void *priv) 562 { 563 static const u8 magic[] = { 564 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 565 }; 566 struct vicodec_ctx *ctx = priv; 567 struct vb2_v4l2_buffer *src_buf; 568 u8 *p_src; 569 u8 *p; 570 u32 sz; 571 u32 state; 572 struct vicodec_q_data *q_dst = get_q_data(ctx, 573 V4L2_BUF_TYPE_VIDEO_CAPTURE); 574 unsigned int flags; 575 unsigned int hdr_width_div; 576 unsigned int hdr_height_div; 577 unsigned int max_to_copy; 578 unsigned int comp_frame_size; 579 580 if (ctx->source_changed) 581 return 0; 582 if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame) 583 return 1; 584 585 restart: 586 ctx->comp_has_next_frame = false; 587 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 588 if (!src_buf) 589 return 0; 590 p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0); 591 sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0); 592 p = p_src + ctx->cur_buf_offset; 593 594 state = VB2_BUF_STATE_DONE; 595 596 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 597 state = get_next_header(ctx, &p, p_src + sz - p); 598 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 599 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 600 src_buf)) 601 return 1; 602 job_remove_src_buf(ctx, state); 603 goto restart; 604 } 605 } 606 607 comp_frame_size = ntohl(ctx->state.header.size); 608 609 /* 610 * The current scanned frame might be the first frame of a new 611 * resolution so its size might be larger than ctx->comp_max_size. 612 * In that case it is copied up to the current buffer capacity and 613 * the copy will continue after allocating new large enough buffer 614 * when restreaming 615 */ 616 max_to_copy = min(comp_frame_size, ctx->comp_max_size); 617 618 if (ctx->comp_size < max_to_copy) { 619 u32 copy = max_to_copy - ctx->comp_size; 620 621 if (copy > p_src + sz - p) 622 copy = p_src + sz - p; 623 624 memcpy(ctx->state.compressed_frame + ctx->comp_size, 625 p, copy); 626 p += copy; 627 ctx->comp_size += copy; 628 if (ctx->comp_size < max_to_copy) { 629 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 630 src_buf)) 631 return 1; 632 job_remove_src_buf(ctx, state); 633 goto restart; 634 } 635 } 636 ctx->cur_buf_offset = p - p_src; 637 if (ctx->comp_size == comp_frame_size) 638 ctx->comp_has_frame = true; 639 ctx->comp_has_next_frame = false; 640 if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >= 641 sizeof(struct fwht_cframe_hdr)) { 642 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p; 643 u32 frame_size = ntohl(p_hdr->size); 644 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr); 645 646 if (!memcmp(p, magic, sizeof(magic))) 647 ctx->comp_has_next_frame = remaining >= frame_size; 648 } 649 /* 650 * if the header is invalid the device_run will just drop the frame 651 * with an error 652 */ 653 if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame) 654 return 1; 655 flags = ntohl(ctx->state.header.flags); 656 hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 657 hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 658 659 if (ntohl(ctx->state.header.width) != q_dst->visible_width || 660 ntohl(ctx->state.header.height) != q_dst->visible_height || 661 !q_dst->info || 662 hdr_width_div != q_dst->info->width_div || 663 hdr_height_div != q_dst->info->height_div) { 664 static const struct v4l2_event rs_event = { 665 .type = V4L2_EVENT_SOURCE_CHANGE, 666 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 667 }; 668 669 struct vb2_v4l2_buffer *dst_buf = 670 v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 671 672 update_capture_data_from_header(ctx); 673 v4l2_event_queue_fh(&ctx->fh, &rs_event); 674 set_last_buffer(dst_buf, src_buf, ctx); 675 ctx->source_changed = true; 676 return 0; 677 } 678 return 1; 679 } 680 681 /* 682 * video ioctls 683 */ 684 685 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt) 686 { 687 const struct v4l2_fwht_pixfmt_info *info = 688 v4l2_fwht_find_pixfmt(fmt); 689 690 if (!info) 691 info = v4l2_fwht_get_pixfmt(0); 692 return info; 693 } 694 695 static int vidioc_querycap(struct file *file, void *priv, 696 struct v4l2_capability *cap) 697 { 698 strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver)); 699 strscpy(cap->card, VICODEC_NAME, sizeof(cap->card)); 700 snprintf(cap->bus_info, sizeof(cap->bus_info), 701 "platform:%s", VICODEC_NAME); 702 return 0; 703 } 704 705 static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx, 706 bool is_out) 707 { 708 bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out); 709 710 if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar) 711 return -EINVAL; 712 if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar) 713 return -EINVAL; 714 715 if (is_uncomp) { 716 const struct v4l2_fwht_pixfmt_info *info = 717 get_q_data(ctx, f->type)->info; 718 719 if (ctx->is_enc || 720 !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) 721 info = v4l2_fwht_get_pixfmt(f->index); 722 else 723 info = v4l2_fwht_find_nth_fmt(info->width_div, 724 info->height_div, 725 info->components_num, 726 info->pixenc, 727 f->index); 728 if (!info) 729 return -EINVAL; 730 f->pixelformat = info->id; 731 } else { 732 if (f->index) 733 return -EINVAL; 734 f->pixelformat = ctx->is_stateless ? 735 V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT; 736 if (!ctx->is_enc && !ctx->is_stateless) 737 f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION | 738 V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM; 739 } 740 return 0; 741 } 742 743 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 744 struct v4l2_fmtdesc *f) 745 { 746 struct vicodec_ctx *ctx = file2ctx(file); 747 748 return enum_fmt(f, ctx, false); 749 } 750 751 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, 752 struct v4l2_fmtdesc *f) 753 { 754 struct vicodec_ctx *ctx = file2ctx(file); 755 756 return enum_fmt(f, ctx, true); 757 } 758 759 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 760 { 761 struct vb2_queue *vq; 762 struct vicodec_q_data *q_data; 763 struct v4l2_pix_format_mplane *pix_mp; 764 struct v4l2_pix_format *pix; 765 const struct v4l2_fwht_pixfmt_info *info; 766 767 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 768 if (!vq) 769 return -EINVAL; 770 771 q_data = get_q_data(ctx, f->type); 772 info = q_data->info; 773 774 switch (f->type) { 775 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 776 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 777 if (multiplanar) 778 return -EINVAL; 779 pix = &f->fmt.pix; 780 pix->width = q_data->coded_width; 781 pix->height = q_data->coded_height; 782 pix->field = V4L2_FIELD_NONE; 783 pix->pixelformat = info->id; 784 pix->bytesperline = q_data->coded_width * 785 info->bytesperline_mult; 786 pix->sizeimage = q_data->sizeimage; 787 pix->colorspace = ctx->state.colorspace; 788 pix->xfer_func = ctx->state.xfer_func; 789 pix->ycbcr_enc = ctx->state.ycbcr_enc; 790 pix->quantization = ctx->state.quantization; 791 break; 792 793 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 794 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 795 if (!multiplanar) 796 return -EINVAL; 797 pix_mp = &f->fmt.pix_mp; 798 pix_mp->width = q_data->coded_width; 799 pix_mp->height = q_data->coded_height; 800 pix_mp->field = V4L2_FIELD_NONE; 801 pix_mp->pixelformat = info->id; 802 pix_mp->num_planes = 1; 803 pix_mp->plane_fmt[0].bytesperline = 804 q_data->coded_width * info->bytesperline_mult; 805 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage; 806 pix_mp->colorspace = ctx->state.colorspace; 807 pix_mp->xfer_func = ctx->state.xfer_func; 808 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 809 pix_mp->quantization = ctx->state.quantization; 810 break; 811 default: 812 return -EINVAL; 813 } 814 return 0; 815 } 816 817 static int vidioc_g_fmt_vid_out(struct file *file, void *priv, 818 struct v4l2_format *f) 819 { 820 return vidioc_g_fmt(file2ctx(file), f); 821 } 822 823 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 824 struct v4l2_format *f) 825 { 826 return vidioc_g_fmt(file2ctx(file), f); 827 } 828 829 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 830 { 831 struct v4l2_pix_format_mplane *pix_mp; 832 struct v4l2_pix_format *pix; 833 struct v4l2_plane_pix_format *plane; 834 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 835 &pixfmt_stateless_fwht : &pixfmt_fwht; 836 837 switch (f->type) { 838 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 839 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 840 pix = &f->fmt.pix; 841 if (pix->pixelformat != V4L2_PIX_FMT_FWHT && 842 pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 843 info = find_fmt(pix->pixelformat); 844 845 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH); 846 pix->width = vic_round_dim(pix->width, info->width_div); 847 848 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT); 849 pix->height = vic_round_dim(pix->height, info->height_div); 850 851 pix->field = V4L2_FIELD_NONE; 852 pix->bytesperline = 853 pix->width * info->bytesperline_mult; 854 pix->sizeimage = pix->width * pix->height * 855 info->sizeimage_mult / info->sizeimage_div; 856 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 857 pix->sizeimage += sizeof(struct fwht_cframe_hdr); 858 break; 859 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 860 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 861 pix_mp = &f->fmt.pix_mp; 862 plane = pix_mp->plane_fmt; 863 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT && 864 pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 865 info = find_fmt(pix_mp->pixelformat); 866 pix_mp->num_planes = 1; 867 868 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH); 869 pix_mp->width = vic_round_dim(pix_mp->width, info->width_div); 870 871 pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT); 872 pix_mp->height = vic_round_dim(pix_mp->height, 873 info->height_div); 874 875 pix_mp->field = V4L2_FIELD_NONE; 876 plane->bytesperline = 877 pix_mp->width * info->bytesperline_mult; 878 plane->sizeimage = pix_mp->width * pix_mp->height * 879 info->sizeimage_mult / info->sizeimage_div; 880 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 881 plane->sizeimage += sizeof(struct fwht_cframe_hdr); 882 break; 883 default: 884 return -EINVAL; 885 } 886 887 return 0; 888 } 889 890 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 891 struct v4l2_format *f) 892 { 893 struct vicodec_ctx *ctx = file2ctx(file); 894 struct v4l2_pix_format_mplane *pix_mp; 895 struct v4l2_pix_format *pix; 896 897 switch (f->type) { 898 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 899 if (multiplanar) 900 return -EINVAL; 901 pix = &f->fmt.pix; 902 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 903 find_fmt(f->fmt.pix.pixelformat)->id; 904 pix->colorspace = ctx->state.colorspace; 905 pix->xfer_func = ctx->state.xfer_func; 906 pix->ycbcr_enc = ctx->state.ycbcr_enc; 907 pix->quantization = ctx->state.quantization; 908 break; 909 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 910 if (!multiplanar) 911 return -EINVAL; 912 pix_mp = &f->fmt.pix_mp; 913 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 914 find_fmt(pix_mp->pixelformat)->id; 915 pix_mp->colorspace = ctx->state.colorspace; 916 pix_mp->xfer_func = ctx->state.xfer_func; 917 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 918 pix_mp->quantization = ctx->state.quantization; 919 break; 920 default: 921 return -EINVAL; 922 } 923 924 return vidioc_try_fmt(ctx, f); 925 } 926 927 static int vidioc_try_fmt_vid_out(struct file *file, void *priv, 928 struct v4l2_format *f) 929 { 930 struct vicodec_ctx *ctx = file2ctx(file); 931 struct v4l2_pix_format_mplane *pix_mp; 932 struct v4l2_pix_format *pix; 933 934 switch (f->type) { 935 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 936 if (multiplanar) 937 return -EINVAL; 938 pix = &f->fmt.pix; 939 if (ctx->is_enc) 940 pix->pixelformat = find_fmt(pix->pixelformat)->id; 941 else if (ctx->is_stateless) 942 pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 943 else 944 pix->pixelformat = V4L2_PIX_FMT_FWHT; 945 if (!pix->colorspace) 946 pix->colorspace = V4L2_COLORSPACE_REC709; 947 break; 948 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 949 if (!multiplanar) 950 return -EINVAL; 951 pix_mp = &f->fmt.pix_mp; 952 if (ctx->is_enc) 953 pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id; 954 else if (ctx->is_stateless) 955 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 956 else 957 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT; 958 if (!pix_mp->colorspace) 959 pix_mp->colorspace = V4L2_COLORSPACE_REC709; 960 break; 961 default: 962 return -EINVAL; 963 } 964 965 return vidioc_try_fmt(ctx, f); 966 } 967 968 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 969 { 970 struct vicodec_q_data *q_data; 971 struct vb2_queue *vq; 972 bool fmt_changed = true; 973 struct v4l2_pix_format_mplane *pix_mp; 974 struct v4l2_pix_format *pix; 975 976 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 977 if (!vq) 978 return -EINVAL; 979 980 q_data = get_q_data(ctx, f->type); 981 if (!q_data) 982 return -EINVAL; 983 984 switch (f->type) { 985 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 986 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 987 pix = &f->fmt.pix; 988 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 989 fmt_changed = 990 !q_data->info || 991 q_data->info->id != pix->pixelformat || 992 q_data->coded_width != pix->width || 993 q_data->coded_height != pix->height; 994 995 if (vb2_is_busy(vq) && fmt_changed) 996 return -EBUSY; 997 998 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 999 q_data->info = &pixfmt_fwht; 1000 else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1001 q_data->info = &pixfmt_stateless_fwht; 1002 else 1003 q_data->info = find_fmt(pix->pixelformat); 1004 q_data->coded_width = pix->width; 1005 q_data->coded_height = pix->height; 1006 q_data->sizeimage = pix->sizeimage; 1007 break; 1008 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1009 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1010 pix_mp = &f->fmt.pix_mp; 1011 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 1012 fmt_changed = 1013 !q_data->info || 1014 q_data->info->id != pix_mp->pixelformat || 1015 q_data->coded_width != pix_mp->width || 1016 q_data->coded_height != pix_mp->height; 1017 1018 if (vb2_is_busy(vq) && fmt_changed) 1019 return -EBUSY; 1020 1021 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 1022 q_data->info = &pixfmt_fwht; 1023 else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1024 q_data->info = &pixfmt_stateless_fwht; 1025 else 1026 q_data->info = find_fmt(pix_mp->pixelformat); 1027 q_data->coded_width = pix_mp->width; 1028 q_data->coded_height = pix_mp->height; 1029 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage; 1030 break; 1031 default: 1032 return -EINVAL; 1033 } 1034 1035 dprintk(ctx->dev, 1036 "Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n", 1037 f->type, q_data->coded_width, q_data->coded_height, 1038 q_data->info->id); 1039 1040 return 0; 1041 } 1042 1043 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1044 struct v4l2_format *f) 1045 { 1046 int ret; 1047 1048 ret = vidioc_try_fmt_vid_cap(file, priv, f); 1049 if (ret) 1050 return ret; 1051 1052 return vidioc_s_fmt(file2ctx(file), f); 1053 } 1054 1055 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 1056 struct v4l2_format *f) 1057 { 1058 struct vicodec_ctx *ctx = file2ctx(file); 1059 struct vicodec_q_data *q_data; 1060 struct vicodec_q_data *q_data_cap; 1061 struct v4l2_pix_format *pix; 1062 struct v4l2_pix_format_mplane *pix_mp; 1063 u32 coded_w = 0, coded_h = 0; 1064 unsigned int size = 0; 1065 int ret; 1066 1067 q_data = get_q_data(ctx, f->type); 1068 q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 1069 1070 ret = vidioc_try_fmt_vid_out(file, priv, f); 1071 if (ret) 1072 return ret; 1073 1074 if (ctx->is_enc) { 1075 struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 1076 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1077 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1078 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 1079 &pixfmt_stateless_fwht : &pixfmt_fwht; 1080 1081 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1082 coded_w = f->fmt.pix.width; 1083 coded_h = f->fmt.pix.height; 1084 } else { 1085 coded_w = f->fmt.pix_mp.width; 1086 coded_h = f->fmt.pix_mp.height; 1087 } 1088 if (vb2_is_busy(vq) && (coded_w != q_data->coded_width || 1089 coded_h != q_data->coded_height)) 1090 return -EBUSY; 1091 size = coded_w * coded_h * 1092 info->sizeimage_mult / info->sizeimage_div; 1093 if (!ctx->is_stateless) 1094 size += sizeof(struct fwht_cframe_hdr); 1095 1096 if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage) 1097 return -EBUSY; 1098 } 1099 1100 ret = vidioc_s_fmt(file2ctx(file), f); 1101 if (!ret) { 1102 if (ctx->is_enc) { 1103 q_data->visible_width = coded_w; 1104 q_data->visible_height = coded_h; 1105 q_data_cap->coded_width = coded_w; 1106 q_data_cap->coded_height = coded_h; 1107 q_data_cap->sizeimage = size; 1108 } 1109 1110 switch (f->type) { 1111 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1112 pix = &f->fmt.pix; 1113 ctx->state.colorspace = pix->colorspace; 1114 ctx->state.xfer_func = pix->xfer_func; 1115 ctx->state.ycbcr_enc = pix->ycbcr_enc; 1116 ctx->state.quantization = pix->quantization; 1117 break; 1118 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1119 pix_mp = &f->fmt.pix_mp; 1120 ctx->state.colorspace = pix_mp->colorspace; 1121 ctx->state.xfer_func = pix_mp->xfer_func; 1122 ctx->state.ycbcr_enc = pix_mp->ycbcr_enc; 1123 ctx->state.quantization = pix_mp->quantization; 1124 break; 1125 default: 1126 break; 1127 } 1128 } 1129 return ret; 1130 } 1131 1132 static int vidioc_g_selection(struct file *file, void *priv, 1133 struct v4l2_selection *s) 1134 { 1135 struct vicodec_ctx *ctx = file2ctx(file); 1136 struct vicodec_q_data *q_data; 1137 1138 q_data = get_q_data(ctx, s->type); 1139 if (!q_data) 1140 return -EINVAL; 1141 /* 1142 * encoder supports only cropping on the OUTPUT buffer 1143 * decoder supports only composing on the CAPTURE buffer 1144 */ 1145 if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1146 switch (s->target) { 1147 case V4L2_SEL_TGT_CROP: 1148 s->r.left = 0; 1149 s->r.top = 0; 1150 s->r.width = q_data->visible_width; 1151 s->r.height = q_data->visible_height; 1152 return 0; 1153 case V4L2_SEL_TGT_CROP_DEFAULT: 1154 case V4L2_SEL_TGT_CROP_BOUNDS: 1155 s->r.left = 0; 1156 s->r.top = 0; 1157 s->r.width = q_data->coded_width; 1158 s->r.height = q_data->coded_height; 1159 return 0; 1160 } 1161 } else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1162 switch (s->target) { 1163 case V4L2_SEL_TGT_COMPOSE: 1164 s->r.left = 0; 1165 s->r.top = 0; 1166 s->r.width = q_data->visible_width; 1167 s->r.height = q_data->visible_height; 1168 return 0; 1169 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 1170 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1171 s->r.left = 0; 1172 s->r.top = 0; 1173 s->r.width = q_data->coded_width; 1174 s->r.height = q_data->coded_height; 1175 return 0; 1176 } 1177 } 1178 return -EINVAL; 1179 } 1180 1181 static int vidioc_s_selection(struct file *file, void *priv, 1182 struct v4l2_selection *s) 1183 { 1184 struct vicodec_ctx *ctx = file2ctx(file); 1185 struct vicodec_q_data *q_data; 1186 1187 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1188 return -EINVAL; 1189 1190 q_data = get_q_data(ctx, s->type); 1191 if (!q_data) 1192 return -EINVAL; 1193 1194 if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP) 1195 return -EINVAL; 1196 1197 s->r.left = 0; 1198 s->r.top = 0; 1199 q_data->visible_width = clamp(s->r.width, MIN_WIDTH, 1200 q_data->coded_width); 1201 s->r.width = q_data->visible_width; 1202 q_data->visible_height = clamp(s->r.height, MIN_HEIGHT, 1203 q_data->coded_height); 1204 s->r.height = q_data->visible_height; 1205 return 0; 1206 } 1207 1208 static int vicodec_encoder_cmd(struct file *file, void *fh, 1209 struct v4l2_encoder_cmd *ec) 1210 { 1211 struct vicodec_ctx *ctx = file2ctx(file); 1212 int ret; 1213 1214 ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec); 1215 if (ret < 0) 1216 return ret; 1217 1218 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) || 1219 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q)) 1220 return 0; 1221 1222 ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, ec); 1223 if (ret < 0) 1224 return ret; 1225 1226 if (ec->cmd == V4L2_ENC_CMD_STOP && 1227 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1228 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1229 1230 if (ec->cmd == V4L2_ENC_CMD_START && 1231 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1232 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q); 1233 1234 return 0; 1235 } 1236 1237 static int vicodec_decoder_cmd(struct file *file, void *fh, 1238 struct v4l2_decoder_cmd *dc) 1239 { 1240 struct vicodec_ctx *ctx = file2ctx(file); 1241 int ret; 1242 1243 /* 1244 * This ioctl should not be used with a stateless codec that doesn't 1245 * support holding buffers and the associated flush command. 1246 */ 1247 WARN_ON(ctx->is_stateless); 1248 1249 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc); 1250 if (ret < 0) 1251 return ret; 1252 1253 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) || 1254 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q)) 1255 return 0; 1256 1257 ret = v4l2_m2m_ioctl_decoder_cmd(file, fh, dc); 1258 if (ret < 0) 1259 return ret; 1260 1261 if (dc->cmd == V4L2_DEC_CMD_STOP && 1262 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1263 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1264 1265 if (dc->cmd == V4L2_DEC_CMD_START && 1266 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1267 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q); 1268 1269 return 0; 1270 } 1271 1272 static int vicodec_enum_framesizes(struct file *file, void *fh, 1273 struct v4l2_frmsizeenum *fsize) 1274 { 1275 switch (fsize->pixel_format) { 1276 case V4L2_PIX_FMT_FWHT_STATELESS: 1277 break; 1278 case V4L2_PIX_FMT_FWHT: 1279 break; 1280 default: 1281 if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format) 1282 break; 1283 return -EINVAL; 1284 } 1285 1286 if (fsize->index) 1287 return -EINVAL; 1288 1289 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 1290 1291 fsize->stepwise.min_width = MIN_WIDTH; 1292 fsize->stepwise.max_width = MAX_WIDTH; 1293 fsize->stepwise.step_width = 8; 1294 fsize->stepwise.min_height = MIN_HEIGHT; 1295 fsize->stepwise.max_height = MAX_HEIGHT; 1296 fsize->stepwise.step_height = 8; 1297 1298 return 0; 1299 } 1300 1301 static int vicodec_subscribe_event(struct v4l2_fh *fh, 1302 const struct v4l2_event_subscription *sub) 1303 { 1304 struct vicodec_ctx *ctx = container_of(fh, struct vicodec_ctx, fh); 1305 1306 switch (sub->type) { 1307 case V4L2_EVENT_SOURCE_CHANGE: 1308 if (ctx->is_enc) 1309 return -EINVAL; 1310 fallthrough; 1311 case V4L2_EVENT_EOS: 1312 if (ctx->is_stateless) 1313 return -EINVAL; 1314 return v4l2_event_subscribe(fh, sub, 0, NULL); 1315 default: 1316 return v4l2_ctrl_subscribe_event(fh, sub); 1317 } 1318 } 1319 1320 static const struct v4l2_ioctl_ops vicodec_ioctl_ops = { 1321 .vidioc_querycap = vidioc_querycap, 1322 1323 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1324 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1325 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1326 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1327 1328 .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap, 1329 .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap, 1330 .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap, 1331 1332 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, 1333 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, 1334 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, 1335 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 1336 1337 .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out, 1338 .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out, 1339 .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out, 1340 1341 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 1342 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 1343 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 1344 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 1345 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, 1346 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, 1347 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, 1348 1349 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 1350 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 1351 1352 .vidioc_g_selection = vidioc_g_selection, 1353 .vidioc_s_selection = vidioc_s_selection, 1354 1355 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd, 1356 .vidioc_encoder_cmd = vicodec_encoder_cmd, 1357 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd, 1358 .vidioc_decoder_cmd = vicodec_decoder_cmd, 1359 .vidioc_enum_framesizes = vicodec_enum_framesizes, 1360 1361 .vidioc_subscribe_event = vicodec_subscribe_event, 1362 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1363 }; 1364 1365 1366 /* 1367 * Queue operations 1368 */ 1369 1370 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, 1371 unsigned int *nplanes, unsigned int sizes[], 1372 struct device *alloc_devs[]) 1373 { 1374 struct vicodec_ctx *ctx = vb2_get_drv_priv(vq); 1375 struct vicodec_q_data *q_data = get_q_data(ctx, vq->type); 1376 unsigned int size = q_data->sizeimage; 1377 1378 if (*nplanes) 1379 return sizes[0] < size ? -EINVAL : 0; 1380 1381 *nplanes = 1; 1382 sizes[0] = size; 1383 q_data->vb2_sizeimage = size; 1384 return 0; 1385 } 1386 1387 static int vicodec_buf_out_validate(struct vb2_buffer *vb) 1388 { 1389 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1390 1391 vbuf->field = V4L2_FIELD_NONE; 1392 return 0; 1393 } 1394 1395 static int vicodec_buf_prepare(struct vb2_buffer *vb) 1396 { 1397 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1398 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1399 struct vicodec_q_data *q_data; 1400 1401 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); 1402 1403 q_data = get_q_data(ctx, vb->vb2_queue->type); 1404 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { 1405 if (vbuf->field == V4L2_FIELD_ANY) 1406 vbuf->field = V4L2_FIELD_NONE; 1407 if (vbuf->field != V4L2_FIELD_NONE) { 1408 dprintk(ctx->dev, "%s field isn't supported\n", 1409 __func__); 1410 return -EINVAL; 1411 } 1412 } 1413 1414 if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) { 1415 dprintk(ctx->dev, 1416 "%s data will not fit into plane (%lu < %lu)\n", 1417 __func__, vb2_plane_size(vb, 0), 1418 (long)q_data->vb2_sizeimage); 1419 return -EINVAL; 1420 } 1421 1422 return 0; 1423 } 1424 1425 static void vicodec_buf_queue(struct vb2_buffer *vb) 1426 { 1427 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1428 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1429 unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0); 1430 u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0); 1431 u8 *p = p_src; 1432 struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1433 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1434 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1435 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1436 bool header_valid = false; 1437 static const struct v4l2_event rs_event = { 1438 .type = V4L2_EVENT_SOURCE_CHANGE, 1439 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 1440 }; 1441 1442 if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) && 1443 vb2_is_streaming(vb->vb2_queue) && 1444 v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) { 1445 unsigned int i; 1446 1447 for (i = 0; i < vb->num_planes; i++) 1448 vb2_set_plane_payload(vb, i, 0); 1449 1450 vbuf->field = V4L2_FIELD_NONE; 1451 vbuf->sequence = 1452 get_q_data(ctx, vb->vb2_queue->type)->sequence++; 1453 1454 v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf); 1455 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1456 return; 1457 } 1458 1459 /* buf_queue handles only the first source change event */ 1460 if (ctx->first_source_change_sent) { 1461 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1462 return; 1463 } 1464 1465 /* 1466 * if both queues are streaming, the source change event is 1467 * handled in job_ready 1468 */ 1469 if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) { 1470 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1471 return; 1472 } 1473 1474 /* 1475 * source change event is relevant only for the stateful decoder 1476 * in the compressed stream 1477 */ 1478 if (ctx->is_stateless || ctx->is_enc || 1479 V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) { 1480 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1481 return; 1482 } 1483 1484 do { 1485 enum vb2_buffer_state state = 1486 get_next_header(ctx, &p, p_src + sz - p); 1487 1488 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 1489 v4l2_m2m_buf_done(vbuf, state); 1490 return; 1491 } 1492 header_valid = is_header_valid(&ctx->state.header); 1493 /* 1494 * p points right after the end of the header in the 1495 * buffer. If the header is invalid we set p to point 1496 * to the next byte after the start of the header 1497 */ 1498 if (!header_valid) { 1499 p = p - sizeof(struct fwht_cframe_hdr) + 1; 1500 if (p < p_src) 1501 p = p_src; 1502 ctx->header_size = 0; 1503 ctx->comp_magic_cnt = 0; 1504 } 1505 1506 } while (!header_valid); 1507 1508 ctx->cur_buf_offset = p - p_src; 1509 update_capture_data_from_header(ctx); 1510 ctx->first_source_change_sent = true; 1511 v4l2_event_queue_fh(&ctx->fh, &rs_event); 1512 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1513 } 1514 1515 static void vicodec_return_bufs(struct vb2_queue *q, u32 state) 1516 { 1517 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1518 struct vb2_v4l2_buffer *vbuf; 1519 1520 for (;;) { 1521 if (V4L2_TYPE_IS_OUTPUT(q->type)) 1522 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1523 else 1524 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1525 if (vbuf == NULL) 1526 return; 1527 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req, 1528 &ctx->hdl); 1529 spin_lock(ctx->lock); 1530 v4l2_m2m_buf_done(vbuf, state); 1531 spin_unlock(ctx->lock); 1532 } 1533 } 1534 1535 static unsigned int total_frame_size(struct vicodec_q_data *q_data) 1536 { 1537 unsigned int size; 1538 unsigned int chroma_div; 1539 1540 if (!q_data->info) { 1541 WARN_ON(1); 1542 return 0; 1543 } 1544 size = q_data->coded_width * q_data->coded_height; 1545 chroma_div = q_data->info->width_div * q_data->info->height_div; 1546 1547 if (q_data->info->components_num == 4) 1548 return 2 * size + 2 * (size / chroma_div); 1549 else if (q_data->info->components_num == 3) 1550 return size + 2 * (size / chroma_div); 1551 return size; 1552 } 1553 1554 static int vicodec_start_streaming(struct vb2_queue *q, 1555 unsigned int count) 1556 { 1557 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1558 struct vicodec_q_data *q_data = get_q_data(ctx, q->type); 1559 struct v4l2_fwht_state *state = &ctx->state; 1560 const struct v4l2_fwht_pixfmt_info *info = q_data->info; 1561 unsigned int size = q_data->coded_width * q_data->coded_height; 1562 unsigned int chroma_div; 1563 unsigned int total_planes_size; 1564 u8 *new_comp_frame = NULL; 1565 1566 chroma_div = info->width_div * info->height_div; 1567 q_data->sequence = 0; 1568 1569 v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q); 1570 1571 state->gop_cnt = 0; 1572 1573 if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1574 (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc)) 1575 return 0; 1576 1577 if (info->id == V4L2_PIX_FMT_FWHT || 1578 info->id == V4L2_PIX_FMT_FWHT_STATELESS) { 1579 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1580 return -EINVAL; 1581 } 1582 total_planes_size = total_frame_size(q_data); 1583 ctx->comp_max_size = total_planes_size; 1584 1585 state->visible_width = q_data->visible_width; 1586 state->visible_height = q_data->visible_height; 1587 state->coded_width = q_data->coded_width; 1588 state->coded_height = q_data->coded_height; 1589 state->stride = q_data->coded_width * 1590 info->bytesperline_mult; 1591 1592 if (ctx->is_stateless) { 1593 state->ref_stride = state->stride; 1594 return 0; 1595 } 1596 state->ref_stride = q_data->coded_width * info->luma_alpha_step; 1597 1598 state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL); 1599 state->ref_frame.luma = state->ref_frame.buf; 1600 new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL); 1601 1602 if (!state->ref_frame.luma || !new_comp_frame) { 1603 kvfree(state->ref_frame.luma); 1604 kvfree(new_comp_frame); 1605 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1606 return -ENOMEM; 1607 } 1608 /* 1609 * if state->compressed_frame was already allocated then 1610 * it contain data of the first frame of the new resolution 1611 */ 1612 if (state->compressed_frame) { 1613 if (ctx->comp_size > ctx->comp_max_size) 1614 ctx->comp_size = ctx->comp_max_size; 1615 1616 memcpy(new_comp_frame, 1617 state->compressed_frame, ctx->comp_size); 1618 } 1619 1620 kvfree(state->compressed_frame); 1621 state->compressed_frame = new_comp_frame; 1622 1623 if (info->components_num < 3) { 1624 state->ref_frame.cb = NULL; 1625 state->ref_frame.cr = NULL; 1626 state->ref_frame.alpha = NULL; 1627 return 0; 1628 } 1629 1630 state->ref_frame.cb = state->ref_frame.luma + size; 1631 state->ref_frame.cr = state->ref_frame.cb + size / chroma_div; 1632 1633 if (info->components_num == 4) 1634 state->ref_frame.alpha = 1635 state->ref_frame.cr + size / chroma_div; 1636 else 1637 state->ref_frame.alpha = NULL; 1638 1639 return 0; 1640 } 1641 1642 static void vicodec_stop_streaming(struct vb2_queue *q) 1643 { 1644 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1645 1646 vicodec_return_bufs(q, VB2_BUF_STATE_ERROR); 1647 1648 v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q); 1649 1650 if (V4L2_TYPE_IS_OUTPUT(q->type) && 1651 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1652 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1653 1654 if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type)) 1655 ctx->first_source_change_sent = false; 1656 1657 if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1658 (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) { 1659 if (!ctx->is_stateless) 1660 kvfree(ctx->state.ref_frame.buf); 1661 ctx->state.ref_frame.buf = NULL; 1662 ctx->state.ref_frame.luma = NULL; 1663 ctx->comp_max_size = 0; 1664 ctx->source_changed = false; 1665 } 1666 if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) { 1667 ctx->cur_buf_offset = 0; 1668 ctx->comp_size = 0; 1669 ctx->header_size = 0; 1670 ctx->comp_magic_cnt = 0; 1671 ctx->comp_has_frame = false; 1672 ctx->comp_has_next_frame = false; 1673 } 1674 } 1675 1676 static void vicodec_buf_request_complete(struct vb2_buffer *vb) 1677 { 1678 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1679 1680 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl); 1681 } 1682 1683 1684 static const struct vb2_ops vicodec_qops = { 1685 .queue_setup = vicodec_queue_setup, 1686 .buf_out_validate = vicodec_buf_out_validate, 1687 .buf_prepare = vicodec_buf_prepare, 1688 .buf_queue = vicodec_buf_queue, 1689 .buf_request_complete = vicodec_buf_request_complete, 1690 .start_streaming = vicodec_start_streaming, 1691 .stop_streaming = vicodec_stop_streaming, 1692 .wait_prepare = vb2_ops_wait_prepare, 1693 .wait_finish = vb2_ops_wait_finish, 1694 }; 1695 1696 static int queue_init(void *priv, struct vb2_queue *src_vq, 1697 struct vb2_queue *dst_vq) 1698 { 1699 struct vicodec_ctx *ctx = priv; 1700 int ret; 1701 1702 src_vq->type = (multiplanar ? 1703 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : 1704 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1705 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1706 src_vq->drv_priv = ctx; 1707 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1708 src_vq->ops = &vicodec_qops; 1709 src_vq->mem_ops = &vb2_vmalloc_memops; 1710 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1711 if (ctx->is_enc) 1712 src_vq->lock = &ctx->dev->stateful_enc.mutex; 1713 else if (ctx->is_stateless) 1714 src_vq->lock = &ctx->dev->stateless_dec.mutex; 1715 else 1716 src_vq->lock = &ctx->dev->stateful_dec.mutex; 1717 src_vq->supports_requests = ctx->is_stateless; 1718 src_vq->requires_requests = ctx->is_stateless; 1719 ret = vb2_queue_init(src_vq); 1720 if (ret) 1721 return ret; 1722 1723 dst_vq->type = (multiplanar ? 1724 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : 1725 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1726 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1727 dst_vq->max_num_buffers = 64; 1728 dst_vq->drv_priv = ctx; 1729 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1730 dst_vq->ops = &vicodec_qops; 1731 dst_vq->mem_ops = &vb2_vmalloc_memops; 1732 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1733 dst_vq->lock = src_vq->lock; 1734 1735 return vb2_queue_init(dst_vq); 1736 } 1737 1738 static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl) 1739 { 1740 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1741 struct vicodec_ctx, hdl); 1742 const struct v4l2_ctrl_fwht_params *params; 1743 struct vicodec_q_data *q_dst = get_q_data(ctx, 1744 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1745 1746 switch (ctrl->id) { 1747 case V4L2_CID_STATELESS_FWHT_PARAMS: 1748 if (!q_dst->info) 1749 return -EINVAL; 1750 params = ctrl->p_new.p_fwht_params; 1751 if (params->width > q_dst->coded_width || 1752 params->width < MIN_WIDTH || 1753 params->height > q_dst->coded_height || 1754 params->height < MIN_HEIGHT) 1755 return -EINVAL; 1756 if (!validate_by_version(params->flags, params->version)) 1757 return -EINVAL; 1758 if (!validate_stateless_params_flags(params, q_dst->info)) 1759 return -EINVAL; 1760 return 0; 1761 default: 1762 return 0; 1763 } 1764 return 0; 1765 } 1766 1767 static void update_header_from_stateless_params(struct vicodec_ctx *ctx, 1768 const struct v4l2_ctrl_fwht_params *params) 1769 { 1770 struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 1771 1772 p_hdr->magic1 = FWHT_MAGIC1; 1773 p_hdr->magic2 = FWHT_MAGIC2; 1774 p_hdr->version = htonl(params->version); 1775 p_hdr->width = htonl(params->width); 1776 p_hdr->height = htonl(params->height); 1777 p_hdr->flags = htonl(params->flags); 1778 p_hdr->colorspace = htonl(params->colorspace); 1779 p_hdr->xfer_func = htonl(params->xfer_func); 1780 p_hdr->ycbcr_enc = htonl(params->ycbcr_enc); 1781 p_hdr->quantization = htonl(params->quantization); 1782 } 1783 1784 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl) 1785 { 1786 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1787 struct vicodec_ctx, hdl); 1788 const struct v4l2_ctrl_fwht_params *params; 1789 1790 switch (ctrl->id) { 1791 case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 1792 ctx->state.gop_size = ctrl->val; 1793 return 0; 1794 case V4L2_CID_FWHT_I_FRAME_QP: 1795 ctx->state.i_frame_qp = ctrl->val; 1796 return 0; 1797 case V4L2_CID_FWHT_P_FRAME_QP: 1798 ctx->state.p_frame_qp = ctrl->val; 1799 return 0; 1800 case V4L2_CID_STATELESS_FWHT_PARAMS: 1801 params = ctrl->p_new.p_fwht_params; 1802 update_header_from_stateless_params(ctx, params); 1803 ctx->state.ref_frame_ts = params->backward_ref_ts; 1804 return 0; 1805 } 1806 return -EINVAL; 1807 } 1808 1809 static const struct v4l2_ctrl_ops vicodec_ctrl_ops = { 1810 .s_ctrl = vicodec_s_ctrl, 1811 .try_ctrl = vicodec_try_ctrl, 1812 }; 1813 1814 static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = { 1815 .ops = &vicodec_ctrl_ops, 1816 .id = V4L2_CID_STATELESS_FWHT_PARAMS, 1817 .elem_size = sizeof(struct v4l2_ctrl_fwht_params), 1818 }; 1819 1820 /* 1821 * File operations 1822 */ 1823 static int vicodec_open(struct file *file) 1824 { 1825 const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0); 1826 struct video_device *vfd = video_devdata(file); 1827 struct vicodec_dev *dev = video_drvdata(file); 1828 struct vicodec_ctx *ctx = NULL; 1829 struct v4l2_ctrl_handler *hdl; 1830 unsigned int raw_size; 1831 unsigned int comp_size; 1832 int rc = 0; 1833 1834 if (mutex_lock_interruptible(vfd->lock)) 1835 return -ERESTARTSYS; 1836 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 1837 if (!ctx) { 1838 rc = -ENOMEM; 1839 goto open_unlock; 1840 } 1841 1842 if (vfd == &dev->stateful_enc.vfd) 1843 ctx->is_enc = true; 1844 else if (vfd == &dev->stateless_dec.vfd) 1845 ctx->is_stateless = true; 1846 1847 v4l2_fh_init(&ctx->fh, video_devdata(file)); 1848 file->private_data = &ctx->fh; 1849 ctx->dev = dev; 1850 hdl = &ctx->hdl; 1851 v4l2_ctrl_handler_init(hdl, 5); 1852 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1853 1, 16, 1, 10); 1854 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP, 1855 1, 31, 1, 20); 1856 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP, 1857 1, 31, 1, 20); 1858 if (ctx->is_enc) 1859 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, 1860 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 1, 1, 1); 1861 if (ctx->is_stateless) 1862 v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL); 1863 if (hdl->error) { 1864 rc = hdl->error; 1865 v4l2_ctrl_handler_free(hdl); 1866 kfree(ctx); 1867 goto open_unlock; 1868 } 1869 ctx->fh.ctrl_handler = hdl; 1870 v4l2_ctrl_handler_setup(hdl); 1871 1872 if (ctx->is_enc) 1873 ctx->q_data[V4L2_M2M_SRC].info = info; 1874 else if (ctx->is_stateless) 1875 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht; 1876 else 1877 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht; 1878 ctx->q_data[V4L2_M2M_SRC].coded_width = 1280; 1879 ctx->q_data[V4L2_M2M_SRC].coded_height = 720; 1880 ctx->q_data[V4L2_M2M_SRC].visible_width = 1280; 1881 ctx->q_data[V4L2_M2M_SRC].visible_height = 720; 1882 raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div; 1883 comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult / 1884 pixfmt_fwht.sizeimage_div; 1885 if (ctx->is_enc) 1886 ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size; 1887 else if (ctx->is_stateless) 1888 ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size; 1889 else 1890 ctx->q_data[V4L2_M2M_SRC].sizeimage = 1891 comp_size + sizeof(struct fwht_cframe_hdr); 1892 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; 1893 if (ctx->is_enc) { 1894 ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht; 1895 ctx->q_data[V4L2_M2M_DST].sizeimage = 1896 comp_size + sizeof(struct fwht_cframe_hdr); 1897 } else { 1898 ctx->q_data[V4L2_M2M_DST].info = info; 1899 ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size; 1900 } 1901 1902 ctx->state.colorspace = V4L2_COLORSPACE_REC709; 1903 1904 if (ctx->is_enc) { 1905 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev, 1906 ctx, &queue_init); 1907 ctx->lock = &dev->stateful_enc.lock; 1908 } else if (ctx->is_stateless) { 1909 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev, 1910 ctx, &queue_init); 1911 ctx->lock = &dev->stateless_dec.lock; 1912 } else { 1913 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev, 1914 ctx, &queue_init); 1915 ctx->lock = &dev->stateful_dec.lock; 1916 } 1917 1918 if (IS_ERR(ctx->fh.m2m_ctx)) { 1919 rc = PTR_ERR(ctx->fh.m2m_ctx); 1920 1921 v4l2_ctrl_handler_free(hdl); 1922 v4l2_fh_exit(&ctx->fh); 1923 kfree(ctx); 1924 goto open_unlock; 1925 } 1926 1927 v4l2_fh_add(&ctx->fh); 1928 1929 open_unlock: 1930 mutex_unlock(vfd->lock); 1931 return rc; 1932 } 1933 1934 static int vicodec_release(struct file *file) 1935 { 1936 struct video_device *vfd = video_devdata(file); 1937 struct vicodec_ctx *ctx = file2ctx(file); 1938 1939 mutex_lock(vfd->lock); 1940 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 1941 mutex_unlock(vfd->lock); 1942 v4l2_fh_del(&ctx->fh); 1943 v4l2_fh_exit(&ctx->fh); 1944 v4l2_ctrl_handler_free(&ctx->hdl); 1945 kvfree(ctx->state.compressed_frame); 1946 kfree(ctx); 1947 1948 return 0; 1949 } 1950 1951 static int vicodec_request_validate(struct media_request *req) 1952 { 1953 struct media_request_object *obj; 1954 struct v4l2_ctrl_handler *parent_hdl, *hdl; 1955 struct vicodec_ctx *ctx = NULL; 1956 struct v4l2_ctrl *ctrl; 1957 unsigned int count; 1958 1959 list_for_each_entry(obj, &req->objects, list) { 1960 struct vb2_buffer *vb; 1961 1962 if (vb2_request_object_is_buffer(obj)) { 1963 vb = container_of(obj, struct vb2_buffer, req_obj); 1964 ctx = vb2_get_drv_priv(vb->vb2_queue); 1965 1966 break; 1967 } 1968 } 1969 1970 if (!ctx) { 1971 pr_err("No buffer was provided with the request\n"); 1972 return -ENOENT; 1973 } 1974 1975 count = vb2_request_buffer_cnt(req); 1976 if (!count) { 1977 v4l2_info(&ctx->dev->v4l2_dev, 1978 "No buffer was provided with the request\n"); 1979 return -ENOENT; 1980 } else if (count > 1) { 1981 v4l2_info(&ctx->dev->v4l2_dev, 1982 "More than one buffer was provided with the request\n"); 1983 return -EINVAL; 1984 } 1985 1986 parent_hdl = &ctx->hdl; 1987 1988 hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl); 1989 if (!hdl) { 1990 v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n"); 1991 return -ENOENT; 1992 } 1993 ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl, 1994 vicodec_ctrl_stateless_state.id); 1995 v4l2_ctrl_request_hdl_put(hdl); 1996 if (!ctrl) { 1997 v4l2_info(&ctx->dev->v4l2_dev, 1998 "Missing required codec control\n"); 1999 return -ENOENT; 2000 } 2001 2002 return vb2_request_validate(req); 2003 } 2004 2005 static const struct v4l2_file_operations vicodec_fops = { 2006 .owner = THIS_MODULE, 2007 .open = vicodec_open, 2008 .release = vicodec_release, 2009 .poll = v4l2_m2m_fop_poll, 2010 .unlocked_ioctl = video_ioctl2, 2011 .mmap = v4l2_m2m_fop_mmap, 2012 }; 2013 2014 static const struct video_device vicodec_videodev = { 2015 .name = VICODEC_NAME, 2016 .vfl_dir = VFL_DIR_M2M, 2017 .fops = &vicodec_fops, 2018 .ioctl_ops = &vicodec_ioctl_ops, 2019 .minor = -1, 2020 .release = video_device_release_empty, 2021 }; 2022 2023 static const struct media_device_ops vicodec_m2m_media_ops = { 2024 .req_validate = vicodec_request_validate, 2025 .req_queue = v4l2_m2m_request_queue, 2026 }; 2027 2028 static const struct v4l2_m2m_ops m2m_ops = { 2029 .device_run = device_run, 2030 .job_ready = job_ready, 2031 }; 2032 2033 static int register_instance(struct vicodec_dev *dev, 2034 struct vicodec_dev_instance *dev_instance, 2035 const char *name, bool is_enc, bool is_stateless) 2036 { 2037 struct video_device *vfd; 2038 int ret; 2039 2040 spin_lock_init(&dev_instance->lock); 2041 mutex_init(&dev_instance->mutex); 2042 dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops); 2043 if (IS_ERR(dev_instance->m2m_dev)) { 2044 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n"); 2045 return PTR_ERR(dev_instance->m2m_dev); 2046 } 2047 2048 dev_instance->vfd = vicodec_videodev; 2049 vfd = &dev_instance->vfd; 2050 vfd->lock = &dev_instance->mutex; 2051 vfd->v4l2_dev = &dev->v4l2_dev; 2052 strscpy(vfd->name, name, sizeof(vfd->name)); 2053 vfd->device_caps = V4L2_CAP_STREAMING | 2054 (multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M); 2055 if (is_enc || is_stateless) { 2056 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD); 2057 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD); 2058 } 2059 if (!is_enc) { 2060 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD); 2061 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD); 2062 } 2063 video_set_drvdata(vfd, dev); 2064 2065 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0); 2066 if (ret) { 2067 v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name); 2068 v4l2_m2m_release(dev_instance->m2m_dev); 2069 return ret; 2070 } 2071 v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n", 2072 name, vfd->num); 2073 return 0; 2074 } 2075 2076 static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev) 2077 { 2078 struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev); 2079 2080 v4l2_device_unregister(&dev->v4l2_dev); 2081 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2082 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2083 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2084 #ifdef CONFIG_MEDIA_CONTROLLER 2085 media_device_cleanup(&dev->mdev); 2086 #endif 2087 kfree(dev); 2088 } 2089 2090 static int vicodec_probe(struct platform_device *pdev) 2091 { 2092 struct vicodec_dev *dev; 2093 int ret; 2094 2095 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2096 if (!dev) 2097 return -ENOMEM; 2098 2099 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 2100 if (ret) 2101 goto free_dev; 2102 2103 dev->v4l2_dev.release = vicodec_v4l2_dev_release; 2104 2105 #ifdef CONFIG_MEDIA_CONTROLLER 2106 dev->mdev.dev = &pdev->dev; 2107 strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model)); 2108 strscpy(dev->mdev.bus_info, "platform:vicodec", 2109 sizeof(dev->mdev.bus_info)); 2110 media_device_init(&dev->mdev); 2111 dev->mdev.ops = &vicodec_m2m_media_ops; 2112 dev->v4l2_dev.mdev = &dev->mdev; 2113 #endif 2114 2115 platform_set_drvdata(pdev, dev); 2116 2117 ret = register_instance(dev, &dev->stateful_enc, "stateful-encoder", 2118 true, false); 2119 if (ret) 2120 goto unreg_dev; 2121 2122 ret = register_instance(dev, &dev->stateful_dec, "stateful-decoder", 2123 false, false); 2124 if (ret) 2125 goto unreg_sf_enc; 2126 2127 ret = register_instance(dev, &dev->stateless_dec, "stateless-decoder", 2128 false, true); 2129 if (ret) 2130 goto unreg_sf_dec; 2131 2132 #ifdef CONFIG_MEDIA_CONTROLLER 2133 ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev, 2134 &dev->stateful_enc.vfd, 2135 MEDIA_ENT_F_PROC_VIDEO_ENCODER); 2136 if (ret) { 2137 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n"); 2138 goto unreg_m2m; 2139 } 2140 2141 ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev, 2142 &dev->stateful_dec.vfd, 2143 MEDIA_ENT_F_PROC_VIDEO_DECODER); 2144 if (ret) { 2145 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for dec\n"); 2146 goto unreg_m2m_sf_enc_mc; 2147 } 2148 2149 ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev, 2150 &dev->stateless_dec.vfd, 2151 MEDIA_ENT_F_PROC_VIDEO_DECODER); 2152 if (ret) { 2153 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n"); 2154 goto unreg_m2m_sf_dec_mc; 2155 } 2156 2157 ret = media_device_register(&dev->mdev); 2158 if (ret) { 2159 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n"); 2160 goto unreg_m2m_sl_dec_mc; 2161 } 2162 #endif 2163 return 0; 2164 2165 #ifdef CONFIG_MEDIA_CONTROLLER 2166 unreg_m2m_sl_dec_mc: 2167 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2168 unreg_m2m_sf_dec_mc: 2169 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2170 unreg_m2m_sf_enc_mc: 2171 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2172 unreg_m2m: 2173 video_unregister_device(&dev->stateless_dec.vfd); 2174 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2175 #endif 2176 unreg_sf_dec: 2177 video_unregister_device(&dev->stateful_dec.vfd); 2178 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2179 unreg_sf_enc: 2180 video_unregister_device(&dev->stateful_enc.vfd); 2181 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2182 unreg_dev: 2183 v4l2_device_unregister(&dev->v4l2_dev); 2184 free_dev: 2185 kfree(dev); 2186 2187 return ret; 2188 } 2189 2190 static void vicodec_remove(struct platform_device *pdev) 2191 { 2192 struct vicodec_dev *dev = platform_get_drvdata(pdev); 2193 2194 v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME); 2195 2196 #ifdef CONFIG_MEDIA_CONTROLLER 2197 media_device_unregister(&dev->mdev); 2198 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2199 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2200 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2201 #endif 2202 2203 video_unregister_device(&dev->stateful_enc.vfd); 2204 video_unregister_device(&dev->stateful_dec.vfd); 2205 video_unregister_device(&dev->stateless_dec.vfd); 2206 v4l2_device_put(&dev->v4l2_dev); 2207 } 2208 2209 static struct platform_driver vicodec_pdrv = { 2210 .probe = vicodec_probe, 2211 .remove_new = vicodec_remove, 2212 .driver = { 2213 .name = VICODEC_NAME, 2214 }, 2215 }; 2216 2217 static void __exit vicodec_exit(void) 2218 { 2219 platform_driver_unregister(&vicodec_pdrv); 2220 platform_device_unregister(&vicodec_pdev); 2221 } 2222 2223 static int __init vicodec_init(void) 2224 { 2225 int ret; 2226 2227 ret = platform_device_register(&vicodec_pdev); 2228 if (ret) 2229 return ret; 2230 2231 ret = platform_driver_register(&vicodec_pdrv); 2232 if (ret) 2233 platform_device_unregister(&vicodec_pdev); 2234 2235 return ret; 2236 } 2237 2238 module_init(vicodec_init); 2239 module_exit(vicodec_exit); 2240