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 > FWHT_VERSION) 204 return false; 205 206 if (version >= 2) { 207 unsigned int components_num = 1 + 208 ((flags & FWHT_FL_COMPONENTS_NUM_MSK) >> 209 FWHT_FL_COMPONENTS_NUM_OFFSET); 210 unsigned int pixenc = flags & 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 & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 223 unsigned int height_div = 224 (params->flags & 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 & FWHT_FL_COMPONENTS_NUM_MSK) >> 232 FWHT_FL_COMPONENTS_NUM_OFFSET); 233 pixenc = (params->flags & 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) & FWHT_FL_I_FRAME)) { 282 struct vb2_buffer *ref_vb2_buf; 283 int ref_buf_idx; 284 struct vb2_queue *vq_cap = 285 v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 286 V4L2_BUF_TYPE_VIDEO_CAPTURE); 287 288 ref_buf_idx = vb2_find_timestamp(vq_cap, 289 ctx->state.ref_frame_ts, 0); 290 if (ref_buf_idx < 0) 291 return -EINVAL; 292 293 ref_vb2_buf = vq_cap->bufs[ref_buf_idx]; 294 if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR) 295 ret = -EINVAL; 296 ctx->state.ref_frame.buf = 297 vb2_plane_vaddr(ref_vb2_buf, 0); 298 } else { 299 ctx->state.ref_frame.buf = NULL; 300 } 301 } 302 p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0); 303 if (!p_src || !p_dst) { 304 v4l2_err(&dev->v4l2_dev, 305 "Acquiring kernel pointers to buffers failed\n"); 306 return -EFAULT; 307 } 308 309 if (ctx->is_enc) { 310 struct vicodec_q_data *q_src; 311 int comp_sz_or_errcode; 312 313 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 314 state->info = q_src->info; 315 comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst); 316 if (comp_sz_or_errcode < 0) 317 return comp_sz_or_errcode; 318 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode); 319 } else { 320 struct vicodec_q_data *q_dst; 321 unsigned int comp_frame_size = ntohl(ctx->state.header.size); 322 323 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 324 if (comp_frame_size > ctx->comp_max_size) 325 return -EINVAL; 326 state->info = q_dst->info; 327 ret = v4l2_fwht_decode(state, p_src, p_dst); 328 if (ret < 0) 329 return ret; 330 if (!ctx->is_stateless) 331 copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state); 332 333 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage); 334 if (ntohl(ctx->state.header.flags) & FWHT_FL_I_FRAME) 335 dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME; 336 else 337 dst_vb->flags |= V4L2_BUF_FLAG_PFRAME; 338 } 339 return ret; 340 } 341 342 /* 343 * mem2mem callbacks 344 */ 345 static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx, 346 u8 **pp, u32 sz) 347 { 348 static const u8 magic[] = { 349 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 350 }; 351 u8 *p = *pp; 352 u32 state; 353 u8 *header = (u8 *)&ctx->state.header; 354 355 state = VB2_BUF_STATE_DONE; 356 357 if (!ctx->header_size) { 358 state = VB2_BUF_STATE_ERROR; 359 for (; p < *pp + sz; p++) { 360 u32 copy; 361 362 p = memchr(p, magic[ctx->comp_magic_cnt], 363 *pp + sz - p); 364 if (!p) { 365 ctx->comp_magic_cnt = 0; 366 p = *pp + sz; 367 break; 368 } 369 copy = sizeof(magic) - ctx->comp_magic_cnt; 370 if (*pp + sz - p < copy) 371 copy = *pp + sz - p; 372 373 memcpy(header + ctx->comp_magic_cnt, p, copy); 374 ctx->comp_magic_cnt += copy; 375 if (!memcmp(header, magic, ctx->comp_magic_cnt)) { 376 p += copy; 377 state = VB2_BUF_STATE_DONE; 378 break; 379 } 380 ctx->comp_magic_cnt = 0; 381 } 382 if (ctx->comp_magic_cnt < sizeof(magic)) { 383 *pp = p; 384 return state; 385 } 386 ctx->header_size = sizeof(magic); 387 } 388 389 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 390 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size; 391 392 if (*pp + sz - p < copy) 393 copy = *pp + sz - p; 394 395 memcpy(header + ctx->header_size, p, copy); 396 p += copy; 397 ctx->header_size += copy; 398 } 399 *pp = p; 400 return state; 401 } 402 403 /* device_run() - prepares and starts the device */ 404 static void device_run(void *priv) 405 { 406 struct vicodec_ctx *ctx = priv; 407 struct vicodec_dev *dev = ctx->dev; 408 struct vb2_v4l2_buffer *src_buf, *dst_buf; 409 struct vicodec_q_data *q_src, *q_dst; 410 u32 state; 411 struct media_request *src_req; 412 413 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 414 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 415 src_req = src_buf->vb2_buf.req_obj.req; 416 417 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 418 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 419 420 state = VB2_BUF_STATE_DONE; 421 if (device_process(ctx, src_buf, dst_buf)) 422 state = VB2_BUF_STATE_ERROR; 423 else 424 dst_buf->sequence = q_dst->sequence++; 425 dst_buf->flags &= ~V4L2_BUF_FLAG_LAST; 426 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); 427 428 spin_lock(ctx->lock); 429 if (!ctx->comp_has_next_frame && 430 v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) { 431 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 432 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 433 v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx); 434 } 435 if (ctx->is_enc || ctx->is_stateless) { 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 } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) { 440 src_buf->sequence = q_src->sequence++; 441 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 442 v4l2_m2m_buf_done(src_buf, state); 443 ctx->cur_buf_offset = 0; 444 ctx->comp_has_next_frame = false; 445 } 446 v4l2_m2m_buf_done(dst_buf, state); 447 448 ctx->comp_size = 0; 449 ctx->header_size = 0; 450 ctx->comp_magic_cnt = 0; 451 ctx->comp_has_frame = false; 452 spin_unlock(ctx->lock); 453 if (ctx->is_stateless && src_req) 454 v4l2_ctrl_request_complete(src_req, &ctx->hdl); 455 456 if (ctx->is_enc) 457 v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx); 458 else if (ctx->is_stateless) 459 v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev, 460 ctx->fh.m2m_ctx); 461 else 462 v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx); 463 } 464 465 static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state) 466 { 467 struct vb2_v4l2_buffer *src_buf; 468 struct vicodec_q_data *q_src; 469 470 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 471 spin_lock(ctx->lock); 472 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 473 src_buf->sequence = q_src->sequence++; 474 v4l2_m2m_buf_done(src_buf, state); 475 ctx->cur_buf_offset = 0; 476 spin_unlock(ctx->lock); 477 } 478 479 static const struct v4l2_fwht_pixfmt_info * 480 info_from_header(const struct fwht_cframe_hdr *p_hdr) 481 { 482 unsigned int flags = ntohl(p_hdr->flags); 483 unsigned int width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 484 unsigned int height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 485 unsigned int components_num = 3; 486 unsigned int pixenc = 0; 487 unsigned int version = ntohl(p_hdr->version); 488 489 if (version >= 2) { 490 components_num = 1 + ((flags & FWHT_FL_COMPONENTS_NUM_MSK) >> 491 FWHT_FL_COMPONENTS_NUM_OFFSET); 492 pixenc = (flags & FWHT_FL_PIXENC_MSK); 493 } 494 return v4l2_fwht_find_nth_fmt(width_div, height_div, 495 components_num, pixenc, 0); 496 } 497 498 static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr) 499 { 500 const struct v4l2_fwht_pixfmt_info *info; 501 unsigned int w = ntohl(p_hdr->width); 502 unsigned int h = ntohl(p_hdr->height); 503 unsigned int version = ntohl(p_hdr->version); 504 unsigned int flags = ntohl(p_hdr->flags); 505 506 if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT) 507 return false; 508 509 if (!validate_by_version(flags, version)) 510 return false; 511 512 info = info_from_header(p_hdr); 513 if (!info) 514 return false; 515 return true; 516 } 517 518 static void update_capture_data_from_header(struct vicodec_ctx *ctx) 519 { 520 struct vicodec_q_data *q_dst = get_q_data(ctx, 521 V4L2_BUF_TYPE_VIDEO_CAPTURE); 522 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 523 const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr); 524 unsigned int flags = ntohl(p_hdr->flags); 525 unsigned int hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 526 unsigned int hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 527 528 /* 529 * This function should not be used by a stateless codec since 530 * it changes values in q_data that are not request specific 531 */ 532 WARN_ON(ctx->is_stateless); 533 534 q_dst->info = info; 535 q_dst->visible_width = ntohl(p_hdr->width); 536 q_dst->visible_height = ntohl(p_hdr->height); 537 q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div); 538 q_dst->coded_height = vic_round_dim(q_dst->visible_height, 539 hdr_height_div); 540 541 q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height * 542 q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div; 543 ctx->state.colorspace = ntohl(p_hdr->colorspace); 544 545 ctx->state.xfer_func = ntohl(p_hdr->xfer_func); 546 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc); 547 ctx->state.quantization = ntohl(p_hdr->quantization); 548 } 549 550 static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf, 551 const struct vb2_v4l2_buffer *src_buf, 552 struct vicodec_ctx *ctx) 553 { 554 struct vicodec_q_data *q_dst = get_q_data(ctx, 555 V4L2_BUF_TYPE_VIDEO_CAPTURE); 556 557 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0); 558 dst_buf->sequence = q_dst->sequence++; 559 560 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc); 561 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 562 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); 563 } 564 565 static int job_ready(void *priv) 566 { 567 static const u8 magic[] = { 568 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 569 }; 570 struct vicodec_ctx *ctx = priv; 571 struct vb2_v4l2_buffer *src_buf; 572 u8 *p_src; 573 u8 *p; 574 u32 sz; 575 u32 state; 576 struct vicodec_q_data *q_dst = get_q_data(ctx, 577 V4L2_BUF_TYPE_VIDEO_CAPTURE); 578 unsigned int flags; 579 unsigned int hdr_width_div; 580 unsigned int hdr_height_div; 581 unsigned int max_to_copy; 582 unsigned int comp_frame_size; 583 584 if (ctx->source_changed) 585 return 0; 586 if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame) 587 return 1; 588 589 restart: 590 ctx->comp_has_next_frame = false; 591 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 592 if (!src_buf) 593 return 0; 594 p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0); 595 sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0); 596 p = p_src + ctx->cur_buf_offset; 597 598 state = VB2_BUF_STATE_DONE; 599 600 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 601 state = get_next_header(ctx, &p, p_src + sz - p); 602 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 603 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 604 src_buf)) 605 return 1; 606 job_remove_src_buf(ctx, state); 607 goto restart; 608 } 609 } 610 611 comp_frame_size = ntohl(ctx->state.header.size); 612 613 /* 614 * The current scanned frame might be the first frame of a new 615 * resolution so its size might be larger than ctx->comp_max_size. 616 * In that case it is copied up to the current buffer capacity and 617 * the copy will continue after allocating new large enough buffer 618 * when restreaming 619 */ 620 max_to_copy = min(comp_frame_size, ctx->comp_max_size); 621 622 if (ctx->comp_size < max_to_copy) { 623 u32 copy = max_to_copy - ctx->comp_size; 624 625 if (copy > p_src + sz - p) 626 copy = p_src + sz - p; 627 628 memcpy(ctx->state.compressed_frame + ctx->comp_size, 629 p, copy); 630 p += copy; 631 ctx->comp_size += copy; 632 if (ctx->comp_size < max_to_copy) { 633 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 634 src_buf)) 635 return 1; 636 job_remove_src_buf(ctx, state); 637 goto restart; 638 } 639 } 640 ctx->cur_buf_offset = p - p_src; 641 if (ctx->comp_size == comp_frame_size) 642 ctx->comp_has_frame = true; 643 ctx->comp_has_next_frame = false; 644 if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >= 645 sizeof(struct fwht_cframe_hdr)) { 646 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p; 647 u32 frame_size = ntohl(p_hdr->size); 648 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr); 649 650 if (!memcmp(p, magic, sizeof(magic))) 651 ctx->comp_has_next_frame = remaining >= frame_size; 652 } 653 /* 654 * if the header is invalid the device_run will just drop the frame 655 * with an error 656 */ 657 if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame) 658 return 1; 659 flags = ntohl(ctx->state.header.flags); 660 hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 661 hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 662 663 if (ntohl(ctx->state.header.width) != q_dst->visible_width || 664 ntohl(ctx->state.header.height) != q_dst->visible_height || 665 !q_dst->info || 666 hdr_width_div != q_dst->info->width_div || 667 hdr_height_div != q_dst->info->height_div) { 668 static const struct v4l2_event rs_event = { 669 .type = V4L2_EVENT_SOURCE_CHANGE, 670 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 671 }; 672 673 struct vb2_v4l2_buffer *dst_buf = 674 v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 675 676 update_capture_data_from_header(ctx); 677 v4l2_event_queue_fh(&ctx->fh, &rs_event); 678 set_last_buffer(dst_buf, src_buf, ctx); 679 ctx->source_changed = true; 680 return 0; 681 } 682 return 1; 683 } 684 685 /* 686 * video ioctls 687 */ 688 689 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt) 690 { 691 const struct v4l2_fwht_pixfmt_info *info = 692 v4l2_fwht_find_pixfmt(fmt); 693 694 if (!info) 695 info = v4l2_fwht_get_pixfmt(0); 696 return info; 697 } 698 699 static int vidioc_querycap(struct file *file, void *priv, 700 struct v4l2_capability *cap) 701 { 702 strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver)); 703 strscpy(cap->card, VICODEC_NAME, sizeof(cap->card)); 704 snprintf(cap->bus_info, sizeof(cap->bus_info), 705 "platform:%s", VICODEC_NAME); 706 return 0; 707 } 708 709 static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx, 710 bool is_out) 711 { 712 bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out); 713 714 if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar) 715 return -EINVAL; 716 if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar) 717 return -EINVAL; 718 719 if (is_uncomp) { 720 const struct v4l2_fwht_pixfmt_info *info = 721 get_q_data(ctx, f->type)->info; 722 723 if (ctx->is_enc || 724 !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) 725 info = v4l2_fwht_get_pixfmt(f->index); 726 else 727 info = v4l2_fwht_find_nth_fmt(info->width_div, 728 info->height_div, 729 info->components_num, 730 info->pixenc, 731 f->index); 732 if (!info) 733 return -EINVAL; 734 f->pixelformat = info->id; 735 } else { 736 if (f->index) 737 return -EINVAL; 738 f->pixelformat = ctx->is_stateless ? 739 V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT; 740 if (!ctx->is_enc && !ctx->is_stateless) 741 f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION | 742 V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM; 743 } 744 return 0; 745 } 746 747 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 748 struct v4l2_fmtdesc *f) 749 { 750 struct vicodec_ctx *ctx = file2ctx(file); 751 752 return enum_fmt(f, ctx, false); 753 } 754 755 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, 756 struct v4l2_fmtdesc *f) 757 { 758 struct vicodec_ctx *ctx = file2ctx(file); 759 760 return enum_fmt(f, ctx, true); 761 } 762 763 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 764 { 765 struct vb2_queue *vq; 766 struct vicodec_q_data *q_data; 767 struct v4l2_pix_format_mplane *pix_mp; 768 struct v4l2_pix_format *pix; 769 const struct v4l2_fwht_pixfmt_info *info; 770 771 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 772 if (!vq) 773 return -EINVAL; 774 775 q_data = get_q_data(ctx, f->type); 776 info = q_data->info; 777 778 switch (f->type) { 779 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 780 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 781 if (multiplanar) 782 return -EINVAL; 783 pix = &f->fmt.pix; 784 pix->width = q_data->coded_width; 785 pix->height = q_data->coded_height; 786 pix->field = V4L2_FIELD_NONE; 787 pix->pixelformat = info->id; 788 pix->bytesperline = q_data->coded_width * 789 info->bytesperline_mult; 790 pix->sizeimage = q_data->sizeimage; 791 pix->colorspace = ctx->state.colorspace; 792 pix->xfer_func = ctx->state.xfer_func; 793 pix->ycbcr_enc = ctx->state.ycbcr_enc; 794 pix->quantization = ctx->state.quantization; 795 break; 796 797 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 798 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 799 if (!multiplanar) 800 return -EINVAL; 801 pix_mp = &f->fmt.pix_mp; 802 pix_mp->width = q_data->coded_width; 803 pix_mp->height = q_data->coded_height; 804 pix_mp->field = V4L2_FIELD_NONE; 805 pix_mp->pixelformat = info->id; 806 pix_mp->num_planes = 1; 807 pix_mp->plane_fmt[0].bytesperline = 808 q_data->coded_width * info->bytesperline_mult; 809 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage; 810 pix_mp->colorspace = ctx->state.colorspace; 811 pix_mp->xfer_func = ctx->state.xfer_func; 812 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 813 pix_mp->quantization = ctx->state.quantization; 814 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved)); 815 memset(pix_mp->plane_fmt[0].reserved, 0, 816 sizeof(pix_mp->plane_fmt[0].reserved)); 817 break; 818 default: 819 return -EINVAL; 820 } 821 return 0; 822 } 823 824 static int vidioc_g_fmt_vid_out(struct file *file, void *priv, 825 struct v4l2_format *f) 826 { 827 return vidioc_g_fmt(file2ctx(file), f); 828 } 829 830 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 831 struct v4l2_format *f) 832 { 833 return vidioc_g_fmt(file2ctx(file), f); 834 } 835 836 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 837 { 838 struct v4l2_pix_format_mplane *pix_mp; 839 struct v4l2_pix_format *pix; 840 struct v4l2_plane_pix_format *plane; 841 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 842 &pixfmt_stateless_fwht : &pixfmt_fwht; 843 844 switch (f->type) { 845 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 846 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 847 pix = &f->fmt.pix; 848 if (pix->pixelformat != V4L2_PIX_FMT_FWHT && 849 pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 850 info = find_fmt(pix->pixelformat); 851 852 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH); 853 pix->width = vic_round_dim(pix->width, info->width_div); 854 855 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT); 856 pix->height = vic_round_dim(pix->height, info->height_div); 857 858 pix->field = V4L2_FIELD_NONE; 859 pix->bytesperline = 860 pix->width * info->bytesperline_mult; 861 pix->sizeimage = pix->width * pix->height * 862 info->sizeimage_mult / info->sizeimage_div; 863 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 864 pix->sizeimage += sizeof(struct fwht_cframe_hdr); 865 break; 866 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 867 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 868 pix_mp = &f->fmt.pix_mp; 869 plane = pix_mp->plane_fmt; 870 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT && 871 pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 872 info = find_fmt(pix_mp->pixelformat); 873 pix_mp->num_planes = 1; 874 875 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH); 876 pix_mp->width = vic_round_dim(pix_mp->width, info->width_div); 877 878 pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT); 879 pix_mp->height = vic_round_dim(pix_mp->height, 880 info->height_div); 881 882 pix_mp->field = V4L2_FIELD_NONE; 883 plane->bytesperline = 884 pix_mp->width * info->bytesperline_mult; 885 plane->sizeimage = pix_mp->width * pix_mp->height * 886 info->sizeimage_mult / info->sizeimage_div; 887 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 888 plane->sizeimage += sizeof(struct fwht_cframe_hdr); 889 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved)); 890 memset(plane->reserved, 0, sizeof(plane->reserved)); 891 break; 892 default: 893 return -EINVAL; 894 } 895 896 return 0; 897 } 898 899 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 900 struct v4l2_format *f) 901 { 902 struct vicodec_ctx *ctx = file2ctx(file); 903 struct v4l2_pix_format_mplane *pix_mp; 904 struct v4l2_pix_format *pix; 905 906 switch (f->type) { 907 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 908 if (multiplanar) 909 return -EINVAL; 910 pix = &f->fmt.pix; 911 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 912 find_fmt(f->fmt.pix.pixelformat)->id; 913 pix->colorspace = ctx->state.colorspace; 914 pix->xfer_func = ctx->state.xfer_func; 915 pix->ycbcr_enc = ctx->state.ycbcr_enc; 916 pix->quantization = ctx->state.quantization; 917 break; 918 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 919 if (!multiplanar) 920 return -EINVAL; 921 pix_mp = &f->fmt.pix_mp; 922 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 923 find_fmt(pix_mp->pixelformat)->id; 924 pix_mp->colorspace = ctx->state.colorspace; 925 pix_mp->xfer_func = ctx->state.xfer_func; 926 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 927 pix_mp->quantization = ctx->state.quantization; 928 break; 929 default: 930 return -EINVAL; 931 } 932 933 return vidioc_try_fmt(ctx, f); 934 } 935 936 static int vidioc_try_fmt_vid_out(struct file *file, void *priv, 937 struct v4l2_format *f) 938 { 939 struct vicodec_ctx *ctx = file2ctx(file); 940 struct v4l2_pix_format_mplane *pix_mp; 941 struct v4l2_pix_format *pix; 942 943 switch (f->type) { 944 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 945 if (multiplanar) 946 return -EINVAL; 947 pix = &f->fmt.pix; 948 if (ctx->is_enc) 949 pix->pixelformat = find_fmt(pix->pixelformat)->id; 950 else if (ctx->is_stateless) 951 pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 952 else 953 pix->pixelformat = V4L2_PIX_FMT_FWHT; 954 if (!pix->colorspace) 955 pix->colorspace = V4L2_COLORSPACE_REC709; 956 break; 957 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 958 if (!multiplanar) 959 return -EINVAL; 960 pix_mp = &f->fmt.pix_mp; 961 if (ctx->is_enc) 962 pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id; 963 else if (ctx->is_stateless) 964 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 965 else 966 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT; 967 if (!pix_mp->colorspace) 968 pix_mp->colorspace = V4L2_COLORSPACE_REC709; 969 break; 970 default: 971 return -EINVAL; 972 } 973 974 return vidioc_try_fmt(ctx, f); 975 } 976 977 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 978 { 979 struct vicodec_q_data *q_data; 980 struct vb2_queue *vq; 981 bool fmt_changed = true; 982 struct v4l2_pix_format_mplane *pix_mp; 983 struct v4l2_pix_format *pix; 984 985 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 986 if (!vq) 987 return -EINVAL; 988 989 q_data = get_q_data(ctx, f->type); 990 if (!q_data) 991 return -EINVAL; 992 993 switch (f->type) { 994 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 995 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 996 pix = &f->fmt.pix; 997 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 998 fmt_changed = 999 !q_data->info || 1000 q_data->info->id != pix->pixelformat || 1001 q_data->coded_width != pix->width || 1002 q_data->coded_height != pix->height; 1003 1004 if (vb2_is_busy(vq) && fmt_changed) 1005 return -EBUSY; 1006 1007 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 1008 q_data->info = &pixfmt_fwht; 1009 else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1010 q_data->info = &pixfmt_stateless_fwht; 1011 else 1012 q_data->info = find_fmt(pix->pixelformat); 1013 q_data->coded_width = pix->width; 1014 q_data->coded_height = pix->height; 1015 q_data->sizeimage = pix->sizeimage; 1016 break; 1017 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1018 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1019 pix_mp = &f->fmt.pix_mp; 1020 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 1021 fmt_changed = 1022 !q_data->info || 1023 q_data->info->id != pix_mp->pixelformat || 1024 q_data->coded_width != pix_mp->width || 1025 q_data->coded_height != pix_mp->height; 1026 1027 if (vb2_is_busy(vq) && fmt_changed) 1028 return -EBUSY; 1029 1030 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 1031 q_data->info = &pixfmt_fwht; 1032 else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1033 q_data->info = &pixfmt_stateless_fwht; 1034 else 1035 q_data->info = find_fmt(pix_mp->pixelformat); 1036 q_data->coded_width = pix_mp->width; 1037 q_data->coded_height = pix_mp->height; 1038 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage; 1039 break; 1040 default: 1041 return -EINVAL; 1042 } 1043 1044 dprintk(ctx->dev, 1045 "Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n", 1046 f->type, q_data->coded_width, q_data->coded_height, 1047 q_data->info->id); 1048 1049 return 0; 1050 } 1051 1052 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1053 struct v4l2_format *f) 1054 { 1055 int ret; 1056 1057 ret = vidioc_try_fmt_vid_cap(file, priv, f); 1058 if (ret) 1059 return ret; 1060 1061 return vidioc_s_fmt(file2ctx(file), f); 1062 } 1063 1064 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 1065 struct v4l2_format *f) 1066 { 1067 struct vicodec_ctx *ctx = file2ctx(file); 1068 struct vicodec_q_data *q_data; 1069 struct vicodec_q_data *q_data_cap; 1070 struct v4l2_pix_format *pix; 1071 struct v4l2_pix_format_mplane *pix_mp; 1072 u32 coded_w = 0, coded_h = 0; 1073 unsigned int size = 0; 1074 int ret; 1075 1076 q_data = get_q_data(ctx, f->type); 1077 q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 1078 1079 ret = vidioc_try_fmt_vid_out(file, priv, f); 1080 if (ret) 1081 return ret; 1082 1083 if (ctx->is_enc) { 1084 struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 1085 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1086 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1087 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 1088 &pixfmt_stateless_fwht : &pixfmt_fwht; 1089 1090 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1091 coded_w = f->fmt.pix.width; 1092 coded_h = f->fmt.pix.height; 1093 } else { 1094 coded_w = f->fmt.pix_mp.width; 1095 coded_h = f->fmt.pix_mp.height; 1096 } 1097 if (vb2_is_busy(vq) && (coded_w != q_data->coded_width || 1098 coded_h != q_data->coded_height)) 1099 return -EBUSY; 1100 size = coded_w * coded_h * 1101 info->sizeimage_mult / info->sizeimage_div; 1102 if (!ctx->is_stateless) 1103 size += sizeof(struct fwht_cframe_hdr); 1104 1105 if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage) 1106 return -EBUSY; 1107 } 1108 1109 ret = vidioc_s_fmt(file2ctx(file), f); 1110 if (!ret) { 1111 if (ctx->is_enc) { 1112 q_data->visible_width = coded_w; 1113 q_data->visible_height = coded_h; 1114 q_data_cap->coded_width = coded_w; 1115 q_data_cap->coded_height = coded_h; 1116 q_data_cap->sizeimage = size; 1117 } 1118 1119 switch (f->type) { 1120 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1121 pix = &f->fmt.pix; 1122 ctx->state.colorspace = pix->colorspace; 1123 ctx->state.xfer_func = pix->xfer_func; 1124 ctx->state.ycbcr_enc = pix->ycbcr_enc; 1125 ctx->state.quantization = pix->quantization; 1126 break; 1127 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1128 pix_mp = &f->fmt.pix_mp; 1129 ctx->state.colorspace = pix_mp->colorspace; 1130 ctx->state.xfer_func = pix_mp->xfer_func; 1131 ctx->state.ycbcr_enc = pix_mp->ycbcr_enc; 1132 ctx->state.quantization = pix_mp->quantization; 1133 break; 1134 default: 1135 break; 1136 } 1137 } 1138 return ret; 1139 } 1140 1141 static int vidioc_g_selection(struct file *file, void *priv, 1142 struct v4l2_selection *s) 1143 { 1144 struct vicodec_ctx *ctx = file2ctx(file); 1145 struct vicodec_q_data *q_data; 1146 1147 q_data = get_q_data(ctx, s->type); 1148 if (!q_data) 1149 return -EINVAL; 1150 /* 1151 * encoder supports only cropping on the OUTPUT buffer 1152 * decoder supports only composing on the CAPTURE buffer 1153 */ 1154 if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1155 switch (s->target) { 1156 case V4L2_SEL_TGT_CROP: 1157 s->r.left = 0; 1158 s->r.top = 0; 1159 s->r.width = q_data->visible_width; 1160 s->r.height = q_data->visible_height; 1161 return 0; 1162 case V4L2_SEL_TGT_CROP_DEFAULT: 1163 case V4L2_SEL_TGT_CROP_BOUNDS: 1164 s->r.left = 0; 1165 s->r.top = 0; 1166 s->r.width = q_data->coded_width; 1167 s->r.height = q_data->coded_height; 1168 return 0; 1169 } 1170 } else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1171 switch (s->target) { 1172 case V4L2_SEL_TGT_COMPOSE: 1173 s->r.left = 0; 1174 s->r.top = 0; 1175 s->r.width = q_data->visible_width; 1176 s->r.height = q_data->visible_height; 1177 return 0; 1178 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 1179 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1180 s->r.left = 0; 1181 s->r.top = 0; 1182 s->r.width = q_data->coded_width; 1183 s->r.height = q_data->coded_height; 1184 return 0; 1185 } 1186 } 1187 return -EINVAL; 1188 } 1189 1190 static int vidioc_s_selection(struct file *file, void *priv, 1191 struct v4l2_selection *s) 1192 { 1193 struct vicodec_ctx *ctx = file2ctx(file); 1194 struct vicodec_q_data *q_data; 1195 1196 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1197 return -EINVAL; 1198 1199 q_data = get_q_data(ctx, s->type); 1200 if (!q_data) 1201 return -EINVAL; 1202 1203 if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP) 1204 return -EINVAL; 1205 1206 s->r.left = 0; 1207 s->r.top = 0; 1208 q_data->visible_width = clamp(s->r.width, MIN_WIDTH, 1209 q_data->coded_width); 1210 s->r.width = q_data->visible_width; 1211 q_data->visible_height = clamp(s->r.height, MIN_HEIGHT, 1212 q_data->coded_height); 1213 s->r.height = q_data->visible_height; 1214 return 0; 1215 } 1216 1217 static int vicodec_encoder_cmd(struct file *file, void *fh, 1218 struct v4l2_encoder_cmd *ec) 1219 { 1220 struct vicodec_ctx *ctx = file2ctx(file); 1221 int ret; 1222 1223 ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec); 1224 if (ret < 0) 1225 return ret; 1226 1227 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) || 1228 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q)) 1229 return 0; 1230 1231 ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, ec); 1232 if (ret < 0) 1233 return ret; 1234 1235 if (ec->cmd == V4L2_ENC_CMD_STOP && 1236 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1237 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1238 1239 if (ec->cmd == V4L2_ENC_CMD_START && 1240 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1241 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q); 1242 1243 return 0; 1244 } 1245 1246 static int vicodec_decoder_cmd(struct file *file, void *fh, 1247 struct v4l2_decoder_cmd *dc) 1248 { 1249 struct vicodec_ctx *ctx = file2ctx(file); 1250 int ret; 1251 1252 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc); 1253 if (ret < 0) 1254 return ret; 1255 1256 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) || 1257 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q)) 1258 return 0; 1259 1260 ret = v4l2_m2m_ioctl_decoder_cmd(file, fh, dc); 1261 if (ret < 0) 1262 return ret; 1263 1264 if (dc->cmd == V4L2_DEC_CMD_STOP && 1265 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1266 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1267 1268 if (dc->cmd == V4L2_DEC_CMD_START && 1269 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1270 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q); 1271 1272 return 0; 1273 } 1274 1275 static int vicodec_enum_framesizes(struct file *file, void *fh, 1276 struct v4l2_frmsizeenum *fsize) 1277 { 1278 switch (fsize->pixel_format) { 1279 case V4L2_PIX_FMT_FWHT_STATELESS: 1280 break; 1281 case V4L2_PIX_FMT_FWHT: 1282 break; 1283 default: 1284 if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format) 1285 break; 1286 return -EINVAL; 1287 } 1288 1289 if (fsize->index) 1290 return -EINVAL; 1291 1292 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; 1293 1294 fsize->stepwise.min_width = MIN_WIDTH; 1295 fsize->stepwise.max_width = MAX_WIDTH; 1296 fsize->stepwise.step_width = 8; 1297 fsize->stepwise.min_height = MIN_HEIGHT; 1298 fsize->stepwise.max_height = MAX_HEIGHT; 1299 fsize->stepwise.step_height = 8; 1300 1301 return 0; 1302 } 1303 1304 static int vicodec_subscribe_event(struct v4l2_fh *fh, 1305 const struct v4l2_event_subscription *sub) 1306 { 1307 struct vicodec_ctx *ctx = container_of(fh, struct vicodec_ctx, fh); 1308 1309 switch (sub->type) { 1310 case V4L2_EVENT_SOURCE_CHANGE: 1311 if (ctx->is_enc) 1312 return -EINVAL; 1313 fallthrough; 1314 case V4L2_EVENT_EOS: 1315 if (ctx->is_stateless) 1316 return -EINVAL; 1317 return v4l2_event_subscribe(fh, sub, 0, NULL); 1318 default: 1319 return v4l2_ctrl_subscribe_event(fh, sub); 1320 } 1321 } 1322 1323 static const struct v4l2_ioctl_ops vicodec_ioctl_ops = { 1324 .vidioc_querycap = vidioc_querycap, 1325 1326 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, 1327 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, 1328 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, 1329 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, 1330 1331 .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap, 1332 .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap, 1333 .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap, 1334 1335 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out, 1336 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out, 1337 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out, 1338 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out, 1339 1340 .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out, 1341 .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out, 1342 .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out, 1343 1344 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, 1345 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, 1346 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, 1347 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, 1348 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, 1349 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, 1350 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, 1351 1352 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 1353 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 1354 1355 .vidioc_g_selection = vidioc_g_selection, 1356 .vidioc_s_selection = vidioc_s_selection, 1357 1358 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd, 1359 .vidioc_encoder_cmd = vicodec_encoder_cmd, 1360 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd, 1361 .vidioc_decoder_cmd = vicodec_decoder_cmd, 1362 .vidioc_enum_framesizes = vicodec_enum_framesizes, 1363 1364 .vidioc_subscribe_event = vicodec_subscribe_event, 1365 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1366 }; 1367 1368 1369 /* 1370 * Queue operations 1371 */ 1372 1373 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, 1374 unsigned int *nplanes, unsigned int sizes[], 1375 struct device *alloc_devs[]) 1376 { 1377 struct vicodec_ctx *ctx = vb2_get_drv_priv(vq); 1378 struct vicodec_q_data *q_data = get_q_data(ctx, vq->type); 1379 unsigned int size = q_data->sizeimage; 1380 1381 if (*nplanes) 1382 return sizes[0] < size ? -EINVAL : 0; 1383 1384 *nplanes = 1; 1385 sizes[0] = size; 1386 q_data->vb2_sizeimage = size; 1387 return 0; 1388 } 1389 1390 static int vicodec_buf_out_validate(struct vb2_buffer *vb) 1391 { 1392 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1393 1394 vbuf->field = V4L2_FIELD_NONE; 1395 return 0; 1396 } 1397 1398 static int vicodec_buf_prepare(struct vb2_buffer *vb) 1399 { 1400 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1401 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1402 struct vicodec_q_data *q_data; 1403 1404 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); 1405 1406 q_data = get_q_data(ctx, vb->vb2_queue->type); 1407 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { 1408 if (vbuf->field == V4L2_FIELD_ANY) 1409 vbuf->field = V4L2_FIELD_NONE; 1410 if (vbuf->field != V4L2_FIELD_NONE) { 1411 dprintk(ctx->dev, "%s field isn't supported\n", 1412 __func__); 1413 return -EINVAL; 1414 } 1415 } 1416 1417 if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) { 1418 dprintk(ctx->dev, 1419 "%s data will not fit into plane (%lu < %lu)\n", 1420 __func__, vb2_plane_size(vb, 0), 1421 (long)q_data->vb2_sizeimage); 1422 return -EINVAL; 1423 } 1424 1425 return 0; 1426 } 1427 1428 static void vicodec_buf_queue(struct vb2_buffer *vb) 1429 { 1430 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1431 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1432 unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0); 1433 u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0); 1434 u8 *p = p_src; 1435 struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1436 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1437 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1438 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1439 bool header_valid = false; 1440 static const struct v4l2_event rs_event = { 1441 .type = V4L2_EVENT_SOURCE_CHANGE, 1442 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 1443 }; 1444 1445 if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) && 1446 vb2_is_streaming(vb->vb2_queue) && 1447 v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) { 1448 unsigned int i; 1449 1450 for (i = 0; i < vb->num_planes; i++) 1451 vb->planes[i].bytesused = 0; 1452 1453 vbuf->field = V4L2_FIELD_NONE; 1454 vbuf->sequence = 1455 get_q_data(ctx, vb->vb2_queue->type)->sequence++; 1456 1457 v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf); 1458 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1459 return; 1460 } 1461 1462 /* buf_queue handles only the first source change event */ 1463 if (ctx->first_source_change_sent) { 1464 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1465 return; 1466 } 1467 1468 /* 1469 * if both queues are streaming, the source change event is 1470 * handled in job_ready 1471 */ 1472 if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) { 1473 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1474 return; 1475 } 1476 1477 /* 1478 * source change event is relevant only for the stateful decoder 1479 * in the compressed stream 1480 */ 1481 if (ctx->is_stateless || ctx->is_enc || 1482 V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) { 1483 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1484 return; 1485 } 1486 1487 do { 1488 enum vb2_buffer_state state = 1489 get_next_header(ctx, &p, p_src + sz - p); 1490 1491 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 1492 v4l2_m2m_buf_done(vbuf, state); 1493 return; 1494 } 1495 header_valid = is_header_valid(&ctx->state.header); 1496 /* 1497 * p points right after the end of the header in the 1498 * buffer. If the header is invalid we set p to point 1499 * to the next byte after the start of the header 1500 */ 1501 if (!header_valid) { 1502 p = p - sizeof(struct fwht_cframe_hdr) + 1; 1503 if (p < p_src) 1504 p = p_src; 1505 ctx->header_size = 0; 1506 ctx->comp_magic_cnt = 0; 1507 } 1508 1509 } while (!header_valid); 1510 1511 ctx->cur_buf_offset = p - p_src; 1512 update_capture_data_from_header(ctx); 1513 ctx->first_source_change_sent = true; 1514 v4l2_event_queue_fh(&ctx->fh, &rs_event); 1515 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1516 } 1517 1518 static void vicodec_return_bufs(struct vb2_queue *q, u32 state) 1519 { 1520 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1521 struct vb2_v4l2_buffer *vbuf; 1522 1523 for (;;) { 1524 if (V4L2_TYPE_IS_OUTPUT(q->type)) 1525 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1526 else 1527 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1528 if (vbuf == NULL) 1529 return; 1530 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req, 1531 &ctx->hdl); 1532 spin_lock(ctx->lock); 1533 v4l2_m2m_buf_done(vbuf, state); 1534 spin_unlock(ctx->lock); 1535 } 1536 } 1537 1538 static unsigned int total_frame_size(struct vicodec_q_data *q_data) 1539 { 1540 unsigned int size; 1541 unsigned int chroma_div; 1542 1543 if (!q_data->info) { 1544 WARN_ON(1); 1545 return 0; 1546 } 1547 size = q_data->coded_width * q_data->coded_height; 1548 chroma_div = q_data->info->width_div * q_data->info->height_div; 1549 1550 if (q_data->info->components_num == 4) 1551 return 2 * size + 2 * (size / chroma_div); 1552 else if (q_data->info->components_num == 3) 1553 return size + 2 * (size / chroma_div); 1554 return size; 1555 } 1556 1557 static int vicodec_start_streaming(struct vb2_queue *q, 1558 unsigned int count) 1559 { 1560 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1561 struct vicodec_q_data *q_data = get_q_data(ctx, q->type); 1562 struct v4l2_fwht_state *state = &ctx->state; 1563 const struct v4l2_fwht_pixfmt_info *info = q_data->info; 1564 unsigned int size = q_data->coded_width * q_data->coded_height; 1565 unsigned int chroma_div; 1566 unsigned int total_planes_size; 1567 u8 *new_comp_frame = NULL; 1568 1569 chroma_div = info->width_div * info->height_div; 1570 q_data->sequence = 0; 1571 1572 v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q); 1573 1574 state->gop_cnt = 0; 1575 1576 if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1577 (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc)) 1578 return 0; 1579 1580 if (info->id == V4L2_PIX_FMT_FWHT || 1581 info->id == V4L2_PIX_FMT_FWHT_STATELESS) { 1582 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1583 return -EINVAL; 1584 } 1585 total_planes_size = total_frame_size(q_data); 1586 ctx->comp_max_size = total_planes_size; 1587 1588 state->visible_width = q_data->visible_width; 1589 state->visible_height = q_data->visible_height; 1590 state->coded_width = q_data->coded_width; 1591 state->coded_height = q_data->coded_height; 1592 state->stride = q_data->coded_width * 1593 info->bytesperline_mult; 1594 1595 if (ctx->is_stateless) { 1596 state->ref_stride = state->stride; 1597 return 0; 1598 } 1599 state->ref_stride = q_data->coded_width * info->luma_alpha_step; 1600 1601 state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL); 1602 state->ref_frame.luma = state->ref_frame.buf; 1603 new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL); 1604 1605 if (!state->ref_frame.luma || !new_comp_frame) { 1606 kvfree(state->ref_frame.luma); 1607 kvfree(new_comp_frame); 1608 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1609 return -ENOMEM; 1610 } 1611 /* 1612 * if state->compressed_frame was already allocated then 1613 * it contain data of the first frame of the new resolution 1614 */ 1615 if (state->compressed_frame) { 1616 if (ctx->comp_size > ctx->comp_max_size) 1617 ctx->comp_size = ctx->comp_max_size; 1618 1619 memcpy(new_comp_frame, 1620 state->compressed_frame, ctx->comp_size); 1621 } 1622 1623 kvfree(state->compressed_frame); 1624 state->compressed_frame = new_comp_frame; 1625 1626 if (info->components_num < 3) { 1627 state->ref_frame.cb = NULL; 1628 state->ref_frame.cr = NULL; 1629 state->ref_frame.alpha = NULL; 1630 return 0; 1631 } 1632 1633 state->ref_frame.cb = state->ref_frame.luma + size; 1634 state->ref_frame.cr = state->ref_frame.cb + size / chroma_div; 1635 1636 if (info->components_num == 4) 1637 state->ref_frame.alpha = 1638 state->ref_frame.cr + size / chroma_div; 1639 else 1640 state->ref_frame.alpha = NULL; 1641 1642 return 0; 1643 } 1644 1645 static void vicodec_stop_streaming(struct vb2_queue *q) 1646 { 1647 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1648 1649 vicodec_return_bufs(q, VB2_BUF_STATE_ERROR); 1650 1651 v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q); 1652 1653 if (V4L2_TYPE_IS_OUTPUT(q->type) && 1654 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1655 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1656 1657 if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type)) 1658 ctx->first_source_change_sent = false; 1659 1660 if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1661 (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) { 1662 if (!ctx->is_stateless) 1663 kvfree(ctx->state.ref_frame.buf); 1664 ctx->state.ref_frame.buf = NULL; 1665 ctx->state.ref_frame.luma = NULL; 1666 ctx->comp_max_size = 0; 1667 ctx->source_changed = false; 1668 } 1669 if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) { 1670 ctx->cur_buf_offset = 0; 1671 ctx->comp_size = 0; 1672 ctx->header_size = 0; 1673 ctx->comp_magic_cnt = 0; 1674 ctx->comp_has_frame = false; 1675 ctx->comp_has_next_frame = false; 1676 } 1677 } 1678 1679 static void vicodec_buf_request_complete(struct vb2_buffer *vb) 1680 { 1681 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1682 1683 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl); 1684 } 1685 1686 1687 static const struct vb2_ops vicodec_qops = { 1688 .queue_setup = vicodec_queue_setup, 1689 .buf_out_validate = vicodec_buf_out_validate, 1690 .buf_prepare = vicodec_buf_prepare, 1691 .buf_queue = vicodec_buf_queue, 1692 .buf_request_complete = vicodec_buf_request_complete, 1693 .start_streaming = vicodec_start_streaming, 1694 .stop_streaming = vicodec_stop_streaming, 1695 .wait_prepare = vb2_ops_wait_prepare, 1696 .wait_finish = vb2_ops_wait_finish, 1697 }; 1698 1699 static int queue_init(void *priv, struct vb2_queue *src_vq, 1700 struct vb2_queue *dst_vq) 1701 { 1702 struct vicodec_ctx *ctx = priv; 1703 int ret; 1704 1705 src_vq->type = (multiplanar ? 1706 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : 1707 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1708 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1709 src_vq->drv_priv = ctx; 1710 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1711 src_vq->ops = &vicodec_qops; 1712 src_vq->mem_ops = &vb2_vmalloc_memops; 1713 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1714 if (ctx->is_enc) 1715 src_vq->lock = &ctx->dev->stateful_enc.mutex; 1716 else if (ctx->is_stateless) 1717 src_vq->lock = &ctx->dev->stateless_dec.mutex; 1718 else 1719 src_vq->lock = &ctx->dev->stateful_dec.mutex; 1720 src_vq->supports_requests = ctx->is_stateless; 1721 src_vq->requires_requests = ctx->is_stateless; 1722 ret = vb2_queue_init(src_vq); 1723 if (ret) 1724 return ret; 1725 1726 dst_vq->type = (multiplanar ? 1727 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : 1728 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1729 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1730 dst_vq->drv_priv = ctx; 1731 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1732 dst_vq->ops = &vicodec_qops; 1733 dst_vq->mem_ops = &vb2_vmalloc_memops; 1734 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1735 dst_vq->lock = src_vq->lock; 1736 1737 return vb2_queue_init(dst_vq); 1738 } 1739 1740 static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl) 1741 { 1742 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1743 struct vicodec_ctx, hdl); 1744 const struct v4l2_ctrl_fwht_params *params; 1745 struct vicodec_q_data *q_dst = get_q_data(ctx, 1746 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1747 1748 switch (ctrl->id) { 1749 case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS: 1750 if (!q_dst->info) 1751 return -EINVAL; 1752 params = ctrl->p_new.p_fwht_params; 1753 if (params->width > q_dst->coded_width || 1754 params->width < MIN_WIDTH || 1755 params->height > q_dst->coded_height || 1756 params->height < MIN_HEIGHT) 1757 return -EINVAL; 1758 if (!validate_by_version(params->flags, params->version)) 1759 return -EINVAL; 1760 if (!validate_stateless_params_flags(params, q_dst->info)) 1761 return -EINVAL; 1762 return 0; 1763 default: 1764 return 0; 1765 } 1766 return 0; 1767 } 1768 1769 static void update_header_from_stateless_params(struct vicodec_ctx *ctx, 1770 const struct v4l2_ctrl_fwht_params *params) 1771 { 1772 struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 1773 1774 p_hdr->magic1 = FWHT_MAGIC1; 1775 p_hdr->magic2 = FWHT_MAGIC2; 1776 p_hdr->version = htonl(params->version); 1777 p_hdr->width = htonl(params->width); 1778 p_hdr->height = htonl(params->height); 1779 p_hdr->flags = htonl(params->flags); 1780 p_hdr->colorspace = htonl(params->colorspace); 1781 p_hdr->xfer_func = htonl(params->xfer_func); 1782 p_hdr->ycbcr_enc = htonl(params->ycbcr_enc); 1783 p_hdr->quantization = htonl(params->quantization); 1784 } 1785 1786 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl) 1787 { 1788 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1789 struct vicodec_ctx, hdl); 1790 const struct v4l2_ctrl_fwht_params *params; 1791 1792 switch (ctrl->id) { 1793 case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 1794 ctx->state.gop_size = ctrl->val; 1795 return 0; 1796 case V4L2_CID_FWHT_I_FRAME_QP: 1797 ctx->state.i_frame_qp = ctrl->val; 1798 return 0; 1799 case V4L2_CID_FWHT_P_FRAME_QP: 1800 ctx->state.p_frame_qp = ctrl->val; 1801 return 0; 1802 case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS: 1803 params = ctrl->p_new.p_fwht_params; 1804 update_header_from_stateless_params(ctx, params); 1805 ctx->state.ref_frame_ts = params->backward_ref_ts; 1806 return 0; 1807 } 1808 return -EINVAL; 1809 } 1810 1811 static const struct v4l2_ctrl_ops vicodec_ctrl_ops = { 1812 .s_ctrl = vicodec_s_ctrl, 1813 .try_ctrl = vicodec_try_ctrl, 1814 }; 1815 1816 static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = { 1817 .ops = &vicodec_ctrl_ops, 1818 .id = V4L2_CID_MPEG_VIDEO_FWHT_PARAMS, 1819 .elem_size = sizeof(struct v4l2_ctrl_fwht_params), 1820 }; 1821 1822 /* 1823 * File operations 1824 */ 1825 static int vicodec_open(struct file *file) 1826 { 1827 const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0); 1828 struct video_device *vfd = video_devdata(file); 1829 struct vicodec_dev *dev = video_drvdata(file); 1830 struct vicodec_ctx *ctx = NULL; 1831 struct v4l2_ctrl_handler *hdl; 1832 unsigned int raw_size; 1833 unsigned int comp_size; 1834 int rc = 0; 1835 1836 if (mutex_lock_interruptible(vfd->lock)) 1837 return -ERESTARTSYS; 1838 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 1839 if (!ctx) { 1840 rc = -ENOMEM; 1841 goto open_unlock; 1842 } 1843 1844 if (vfd == &dev->stateful_enc.vfd) 1845 ctx->is_enc = true; 1846 else if (vfd == &dev->stateless_dec.vfd) 1847 ctx->is_stateless = true; 1848 1849 v4l2_fh_init(&ctx->fh, video_devdata(file)); 1850 file->private_data = &ctx->fh; 1851 ctx->dev = dev; 1852 hdl = &ctx->hdl; 1853 v4l2_ctrl_handler_init(hdl, 5); 1854 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1855 1, 16, 1, 10); 1856 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP, 1857 1, 31, 1, 20); 1858 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP, 1859 1, 31, 1, 20); 1860 if (ctx->is_enc) 1861 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, 1862 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 1, 1, 1); 1863 if (ctx->is_stateless) 1864 v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL); 1865 if (hdl->error) { 1866 rc = hdl->error; 1867 v4l2_ctrl_handler_free(hdl); 1868 kfree(ctx); 1869 goto open_unlock; 1870 } 1871 ctx->fh.ctrl_handler = hdl; 1872 v4l2_ctrl_handler_setup(hdl); 1873 1874 if (ctx->is_enc) 1875 ctx->q_data[V4L2_M2M_SRC].info = info; 1876 else if (ctx->is_stateless) 1877 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht; 1878 else 1879 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht; 1880 ctx->q_data[V4L2_M2M_SRC].coded_width = 1280; 1881 ctx->q_data[V4L2_M2M_SRC].coded_height = 720; 1882 ctx->q_data[V4L2_M2M_SRC].visible_width = 1280; 1883 ctx->q_data[V4L2_M2M_SRC].visible_height = 720; 1884 raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div; 1885 comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult / 1886 pixfmt_fwht.sizeimage_div; 1887 if (ctx->is_enc) 1888 ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size; 1889 else if (ctx->is_stateless) 1890 ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size; 1891 else 1892 ctx->q_data[V4L2_M2M_SRC].sizeimage = 1893 comp_size + sizeof(struct fwht_cframe_hdr); 1894 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; 1895 if (ctx->is_enc) { 1896 ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht; 1897 ctx->q_data[V4L2_M2M_DST].sizeimage = 1898 comp_size + sizeof(struct fwht_cframe_hdr); 1899 } else { 1900 ctx->q_data[V4L2_M2M_DST].info = info; 1901 ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size; 1902 } 1903 1904 ctx->state.colorspace = V4L2_COLORSPACE_REC709; 1905 1906 if (ctx->is_enc) { 1907 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev, 1908 ctx, &queue_init); 1909 ctx->lock = &dev->stateful_enc.lock; 1910 } else if (ctx->is_stateless) { 1911 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev, 1912 ctx, &queue_init); 1913 ctx->lock = &dev->stateless_dec.lock; 1914 } else { 1915 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev, 1916 ctx, &queue_init); 1917 ctx->lock = &dev->stateful_dec.lock; 1918 } 1919 1920 if (IS_ERR(ctx->fh.m2m_ctx)) { 1921 rc = PTR_ERR(ctx->fh.m2m_ctx); 1922 1923 v4l2_ctrl_handler_free(hdl); 1924 v4l2_fh_exit(&ctx->fh); 1925 kfree(ctx); 1926 goto open_unlock; 1927 } 1928 1929 v4l2_fh_add(&ctx->fh); 1930 1931 open_unlock: 1932 mutex_unlock(vfd->lock); 1933 return rc; 1934 } 1935 1936 static int vicodec_release(struct file *file) 1937 { 1938 struct video_device *vfd = video_devdata(file); 1939 struct vicodec_ctx *ctx = file2ctx(file); 1940 1941 mutex_lock(vfd->lock); 1942 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 1943 mutex_unlock(vfd->lock); 1944 v4l2_fh_del(&ctx->fh); 1945 v4l2_fh_exit(&ctx->fh); 1946 v4l2_ctrl_handler_free(&ctx->hdl); 1947 kvfree(ctx->state.compressed_frame); 1948 kfree(ctx); 1949 1950 return 0; 1951 } 1952 1953 static int vicodec_request_validate(struct media_request *req) 1954 { 1955 struct media_request_object *obj; 1956 struct v4l2_ctrl_handler *parent_hdl, *hdl; 1957 struct vicodec_ctx *ctx = NULL; 1958 struct v4l2_ctrl *ctrl; 1959 unsigned int count; 1960 1961 list_for_each_entry(obj, &req->objects, list) { 1962 struct vb2_buffer *vb; 1963 1964 if (vb2_request_object_is_buffer(obj)) { 1965 vb = container_of(obj, struct vb2_buffer, req_obj); 1966 ctx = vb2_get_drv_priv(vb->vb2_queue); 1967 1968 break; 1969 } 1970 } 1971 1972 if (!ctx) { 1973 pr_err("No buffer was provided with the request\n"); 1974 return -ENOENT; 1975 } 1976 1977 count = vb2_request_buffer_cnt(req); 1978 if (!count) { 1979 v4l2_info(&ctx->dev->v4l2_dev, 1980 "No buffer was provided with the request\n"); 1981 return -ENOENT; 1982 } else if (count > 1) { 1983 v4l2_info(&ctx->dev->v4l2_dev, 1984 "More than one buffer was provided with the request\n"); 1985 return -EINVAL; 1986 } 1987 1988 parent_hdl = &ctx->hdl; 1989 1990 hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl); 1991 if (!hdl) { 1992 v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n"); 1993 return -ENOENT; 1994 } 1995 ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl, 1996 vicodec_ctrl_stateless_state.id); 1997 v4l2_ctrl_request_hdl_put(hdl); 1998 if (!ctrl) { 1999 v4l2_info(&ctx->dev->v4l2_dev, 2000 "Missing required codec control\n"); 2001 return -ENOENT; 2002 } 2003 2004 return vb2_request_validate(req); 2005 } 2006 2007 static const struct v4l2_file_operations vicodec_fops = { 2008 .owner = THIS_MODULE, 2009 .open = vicodec_open, 2010 .release = vicodec_release, 2011 .poll = v4l2_m2m_fop_poll, 2012 .unlocked_ioctl = video_ioctl2, 2013 .mmap = v4l2_m2m_fop_mmap, 2014 }; 2015 2016 static const struct video_device vicodec_videodev = { 2017 .name = VICODEC_NAME, 2018 .vfl_dir = VFL_DIR_M2M, 2019 .fops = &vicodec_fops, 2020 .ioctl_ops = &vicodec_ioctl_ops, 2021 .minor = -1, 2022 .release = video_device_release_empty, 2023 }; 2024 2025 static const struct media_device_ops vicodec_m2m_media_ops = { 2026 .req_validate = vicodec_request_validate, 2027 .req_queue = v4l2_m2m_request_queue, 2028 }; 2029 2030 static const struct v4l2_m2m_ops m2m_ops = { 2031 .device_run = device_run, 2032 .job_ready = job_ready, 2033 }; 2034 2035 static int register_instance(struct vicodec_dev *dev, 2036 struct vicodec_dev_instance *dev_instance, 2037 const char *name, bool is_enc) 2038 { 2039 struct video_device *vfd; 2040 int ret; 2041 2042 spin_lock_init(&dev_instance->lock); 2043 mutex_init(&dev_instance->mutex); 2044 dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops); 2045 if (IS_ERR(dev_instance->m2m_dev)) { 2046 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n"); 2047 return PTR_ERR(dev_instance->m2m_dev); 2048 } 2049 2050 dev_instance->vfd = vicodec_videodev; 2051 vfd = &dev_instance->vfd; 2052 vfd->lock = &dev_instance->mutex; 2053 vfd->v4l2_dev = &dev->v4l2_dev; 2054 strscpy(vfd->name, name, sizeof(vfd->name)); 2055 vfd->device_caps = V4L2_CAP_STREAMING | 2056 (multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M); 2057 if (is_enc) { 2058 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD); 2059 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD); 2060 } else { 2061 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD); 2062 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD); 2063 } 2064 video_set_drvdata(vfd, dev); 2065 2066 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0); 2067 if (ret) { 2068 v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name); 2069 v4l2_m2m_release(dev_instance->m2m_dev); 2070 return ret; 2071 } 2072 v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n", 2073 name, vfd->num); 2074 return 0; 2075 } 2076 2077 static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev) 2078 { 2079 struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev); 2080 2081 v4l2_device_unregister(&dev->v4l2_dev); 2082 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2083 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2084 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2085 #ifdef CONFIG_MEDIA_CONTROLLER 2086 media_device_cleanup(&dev->mdev); 2087 #endif 2088 kfree(dev); 2089 } 2090 2091 static int vicodec_probe(struct platform_device *pdev) 2092 { 2093 struct vicodec_dev *dev; 2094 int ret; 2095 2096 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2097 if (!dev) 2098 return -ENOMEM; 2099 2100 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 2101 if (ret) 2102 goto free_dev; 2103 2104 dev->v4l2_dev.release = vicodec_v4l2_dev_release; 2105 2106 #ifdef CONFIG_MEDIA_CONTROLLER 2107 dev->mdev.dev = &pdev->dev; 2108 strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model)); 2109 strscpy(dev->mdev.bus_info, "platform:vicodec", 2110 sizeof(dev->mdev.bus_info)); 2111 media_device_init(&dev->mdev); 2112 dev->mdev.ops = &vicodec_m2m_media_ops; 2113 dev->v4l2_dev.mdev = &dev->mdev; 2114 #endif 2115 2116 platform_set_drvdata(pdev, dev); 2117 2118 ret = register_instance(dev, &dev->stateful_enc, "stateful-encoder", 2119 true); 2120 if (ret) 2121 goto unreg_dev; 2122 2123 ret = register_instance(dev, &dev->stateful_dec, "stateful-decoder", 2124 false); 2125 if (ret) 2126 goto unreg_sf_enc; 2127 2128 ret = register_instance(dev, &dev->stateless_dec, "stateless-decoder", 2129 false); 2130 if (ret) 2131 goto unreg_sf_dec; 2132 2133 #ifdef CONFIG_MEDIA_CONTROLLER 2134 ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev, 2135 &dev->stateful_enc.vfd, 2136 MEDIA_ENT_F_PROC_VIDEO_ENCODER); 2137 if (ret) { 2138 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n"); 2139 goto unreg_m2m; 2140 } 2141 2142 ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev, 2143 &dev->stateful_dec.vfd, 2144 MEDIA_ENT_F_PROC_VIDEO_DECODER); 2145 if (ret) { 2146 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for dec\n"); 2147 goto unreg_m2m_sf_enc_mc; 2148 } 2149 2150 ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev, 2151 &dev->stateless_dec.vfd, 2152 MEDIA_ENT_F_PROC_VIDEO_DECODER); 2153 if (ret) { 2154 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n"); 2155 goto unreg_m2m_sf_dec_mc; 2156 } 2157 2158 ret = media_device_register(&dev->mdev); 2159 if (ret) { 2160 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n"); 2161 goto unreg_m2m_sl_dec_mc; 2162 } 2163 #endif 2164 return 0; 2165 2166 #ifdef CONFIG_MEDIA_CONTROLLER 2167 unreg_m2m_sl_dec_mc: 2168 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2169 unreg_m2m_sf_dec_mc: 2170 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2171 unreg_m2m_sf_enc_mc: 2172 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2173 unreg_m2m: 2174 video_unregister_device(&dev->stateless_dec.vfd); 2175 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2176 #endif 2177 unreg_sf_dec: 2178 video_unregister_device(&dev->stateful_dec.vfd); 2179 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2180 unreg_sf_enc: 2181 video_unregister_device(&dev->stateful_enc.vfd); 2182 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2183 unreg_dev: 2184 v4l2_device_unregister(&dev->v4l2_dev); 2185 free_dev: 2186 kfree(dev); 2187 2188 return ret; 2189 } 2190 2191 static int vicodec_remove(struct platform_device *pdev) 2192 { 2193 struct vicodec_dev *dev = platform_get_drvdata(pdev); 2194 2195 v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME); 2196 2197 #ifdef CONFIG_MEDIA_CONTROLLER 2198 media_device_unregister(&dev->mdev); 2199 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2200 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2201 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2202 #endif 2203 2204 video_unregister_device(&dev->stateful_enc.vfd); 2205 video_unregister_device(&dev->stateful_dec.vfd); 2206 video_unregister_device(&dev->stateless_dec.vfd); 2207 v4l2_device_put(&dev->v4l2_dev); 2208 2209 return 0; 2210 } 2211 2212 static struct platform_driver vicodec_pdrv = { 2213 .probe = vicodec_probe, 2214 .remove = vicodec_remove, 2215 .driver = { 2216 .name = VICODEC_NAME, 2217 }, 2218 }; 2219 2220 static void __exit vicodec_exit(void) 2221 { 2222 platform_driver_unregister(&vicodec_pdrv); 2223 platform_device_unregister(&vicodec_pdev); 2224 } 2225 2226 static int __init vicodec_init(void) 2227 { 2228 int ret; 2229 2230 ret = platform_device_register(&vicodec_pdev); 2231 if (ret) 2232 return ret; 2233 2234 ret = platform_driver_register(&vicodec_pdrv); 2235 if (ret) 2236 platform_device_unregister(&vicodec_pdev); 2237 2238 return ret; 2239 } 2240 2241 module_init(vicodec_init); 2242 module_exit(vicodec_exit); 2243