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 <hansverk@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 /* Recommended number of buffers for the stateful codecs */ 47 #define VICODEC_REC_BUFS 2 48 49 #define dprintk(dev, fmt, arg...) \ 50 v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg) 51 52 53 struct pixfmt_info { 54 u32 id; 55 unsigned int bytesperline_mult; 56 unsigned int sizeimage_mult; 57 unsigned int sizeimage_div; 58 unsigned int luma_step; 59 unsigned int chroma_step; 60 /* Chroma plane subsampling */ 61 unsigned int width_div; 62 unsigned int height_div; 63 }; 64 65 static const struct v4l2_fwht_pixfmt_info pixfmt_fwht = { 66 V4L2_PIX_FMT_FWHT, 0, 3, 1, 1, 1, 1, 1, 0, 1 67 }; 68 69 static const struct v4l2_fwht_pixfmt_info pixfmt_stateless_fwht = { 70 V4L2_PIX_FMT_FWHT_STATELESS, 0, 3, 1, 1, 1, 1, 1, 0, 1 71 }; 72 73 static void vicodec_dev_release(struct device *dev) 74 { 75 } 76 77 static struct platform_device vicodec_pdev = { 78 .name = VICODEC_NAME, 79 .dev.release = vicodec_dev_release, 80 }; 81 82 /* Per-queue, driver-specific private data */ 83 struct vicodec_q_data { 84 unsigned int coded_width; 85 unsigned int coded_height; 86 unsigned int visible_width; 87 unsigned int visible_height; 88 unsigned int sizeimage; 89 unsigned int vb2_sizeimage; 90 unsigned int sequence; 91 const struct v4l2_fwht_pixfmt_info *info; 92 }; 93 94 enum { 95 V4L2_M2M_SRC = 0, 96 V4L2_M2M_DST = 1, 97 }; 98 99 struct vicodec_dev_instance { 100 struct video_device vfd; 101 struct mutex mutex; 102 spinlock_t lock; 103 struct v4l2_m2m_dev *m2m_dev; 104 }; 105 106 struct vicodec_dev { 107 struct v4l2_device v4l2_dev; 108 struct vicodec_dev_instance stateful_enc; 109 struct vicodec_dev_instance stateful_dec; 110 struct vicodec_dev_instance stateless_dec; 111 #ifdef CONFIG_MEDIA_CONTROLLER 112 struct media_device mdev; 113 #endif 114 115 }; 116 117 struct vicodec_ctx { 118 struct v4l2_fh fh; 119 struct vicodec_dev *dev; 120 bool is_enc; 121 bool is_stateless; 122 spinlock_t *lock; 123 124 struct v4l2_ctrl_handler hdl; 125 126 /* Source and destination queue data */ 127 struct vicodec_q_data q_data[2]; 128 struct v4l2_fwht_state state; 129 130 u32 cur_buf_offset; 131 u32 comp_max_size; 132 u32 comp_size; 133 u32 header_size; 134 u32 comp_magic_cnt; 135 bool comp_has_frame; 136 bool comp_has_next_frame; 137 bool first_source_change_sent; 138 bool source_changed; 139 }; 140 141 static const struct v4l2_event vicodec_eos_event = { 142 .type = V4L2_EVENT_EOS 143 }; 144 145 static inline struct vicodec_ctx *file2ctx(struct file *file) 146 { 147 return container_of(file->private_data, struct vicodec_ctx, fh); 148 } 149 150 static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx, 151 enum v4l2_buf_type type) 152 { 153 switch (type) { 154 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 155 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 156 return &ctx->q_data[V4L2_M2M_SRC]; 157 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 158 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 159 return &ctx->q_data[V4L2_M2M_DST]; 160 default: 161 break; 162 } 163 return NULL; 164 } 165 166 static void copy_cap_to_ref(const u8 *cap, const struct v4l2_fwht_pixfmt_info *info, 167 struct v4l2_fwht_state *state) 168 { 169 int plane_idx; 170 u8 *p_ref = state->ref_frame.buf; 171 unsigned int cap_stride = state->stride; 172 unsigned int ref_stride = state->ref_stride; 173 174 for (plane_idx = 0; plane_idx < info->planes_num; plane_idx++) { 175 int i; 176 unsigned int h_div = (plane_idx == 1 || plane_idx == 2) ? 177 info->height_div : 1; 178 const u8 *row_cap = cap; 179 u8 *row_ref = p_ref; 180 181 if (info->planes_num == 3 && plane_idx == 1) { 182 cap_stride /= 2; 183 ref_stride /= 2; 184 } 185 186 if (plane_idx == 1 && 187 (info->id == V4L2_PIX_FMT_NV24 || 188 info->id == V4L2_PIX_FMT_NV42)) { 189 cap_stride *= 2; 190 ref_stride *= 2; 191 } 192 193 for (i = 0; i < state->visible_height / h_div; i++) { 194 memcpy(row_ref, row_cap, ref_stride); 195 row_ref += ref_stride; 196 row_cap += cap_stride; 197 } 198 cap += cap_stride * (state->coded_height / h_div); 199 p_ref += ref_stride * (state->coded_height / h_div); 200 } 201 } 202 203 static bool validate_by_version(unsigned int flags, unsigned int version) 204 { 205 if (!version || version > V4L2_FWHT_VERSION) 206 return false; 207 208 if (version >= 2) { 209 unsigned int components_num = 1 + 210 ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 211 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 212 unsigned int pixenc = flags & V4L2_FWHT_FL_PIXENC_MSK; 213 214 if (components_num == 0 || components_num > 4 || !pixenc) 215 return false; 216 } 217 return true; 218 } 219 220 static bool validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params *params, 221 const struct v4l2_fwht_pixfmt_info *cur_info) 222 { 223 unsigned int width_div = 224 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 225 unsigned int height_div = 226 (params->flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 227 unsigned int components_num = 3; 228 unsigned int pixenc = 0; 229 230 if (params->version < 3) 231 return false; 232 233 components_num = 1 + ((params->flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 234 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 235 pixenc = (params->flags & V4L2_FWHT_FL_PIXENC_MSK); 236 if (v4l2_fwht_validate_fmt(cur_info, width_div, height_div, 237 components_num, pixenc)) 238 return true; 239 return false; 240 } 241 242 243 static void update_state_from_header(struct vicodec_ctx *ctx) 244 { 245 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 246 247 ctx->state.visible_width = ntohl(p_hdr->width); 248 ctx->state.visible_height = ntohl(p_hdr->height); 249 ctx->state.colorspace = ntohl(p_hdr->colorspace); 250 ctx->state.xfer_func = ntohl(p_hdr->xfer_func); 251 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc); 252 ctx->state.quantization = ntohl(p_hdr->quantization); 253 } 254 255 static int device_process(struct vicodec_ctx *ctx, 256 struct vb2_v4l2_buffer *src_vb, 257 struct vb2_v4l2_buffer *dst_vb) 258 { 259 struct vicodec_dev *dev = ctx->dev; 260 struct v4l2_fwht_state *state = &ctx->state; 261 u8 *p_src, *p_dst; 262 int ret = 0; 263 264 if (ctx->is_enc || ctx->is_stateless) 265 p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0); 266 else 267 p_src = state->compressed_frame; 268 269 if (ctx->is_stateless) { 270 struct media_request *src_req = src_vb->vb2_buf.req_obj.req; 271 272 ret = v4l2_ctrl_request_setup(src_req, &ctx->hdl); 273 if (ret) 274 return ret; 275 update_state_from_header(ctx); 276 277 ctx->state.header.size = 278 htonl(vb2_get_plane_payload(&src_vb->vb2_buf, 0)); 279 /* 280 * set the reference buffer from the reference timestamp 281 * only if this is a P-frame 282 */ 283 if (!(ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME)) { 284 struct vb2_buffer *ref_vb2_buf; 285 struct vb2_queue *vq_cap = 286 v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 287 V4L2_BUF_TYPE_VIDEO_CAPTURE); 288 289 ref_vb2_buf = vb2_find_buffer(vq_cap, ctx->state.ref_frame_ts); 290 if (!ref_vb2_buf) 291 return -EINVAL; 292 if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR) 293 ret = -EINVAL; 294 ctx->state.ref_frame.buf = 295 vb2_plane_vaddr(ref_vb2_buf, 0); 296 } else { 297 ctx->state.ref_frame.buf = NULL; 298 } 299 } 300 p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0); 301 if (!p_src || !p_dst) { 302 v4l2_err(&dev->v4l2_dev, 303 "Acquiring kernel pointers to buffers failed\n"); 304 return -EFAULT; 305 } 306 307 if (ctx->is_enc) { 308 struct vicodec_q_data *q_src; 309 int comp_sz_or_errcode; 310 311 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 312 state->info = q_src->info; 313 comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst); 314 if (comp_sz_or_errcode < 0) 315 return comp_sz_or_errcode; 316 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode); 317 } else { 318 struct vicodec_q_data *q_dst; 319 unsigned int comp_frame_size = ntohl(ctx->state.header.size); 320 321 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 322 if (comp_frame_size > ctx->comp_max_size) 323 return -EINVAL; 324 state->info = q_dst->info; 325 ret = v4l2_fwht_decode(state, p_src, p_dst); 326 if (ret < 0) 327 return ret; 328 if (!ctx->is_stateless) 329 copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state); 330 331 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage); 332 if (ntohl(ctx->state.header.flags) & V4L2_FWHT_FL_I_FRAME) 333 dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME; 334 else 335 dst_vb->flags |= V4L2_BUF_FLAG_PFRAME; 336 } 337 return ret; 338 } 339 340 /* 341 * mem2mem callbacks 342 */ 343 static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx, 344 u8 **pp, u32 sz) 345 { 346 static const u8 magic[] = { 347 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 348 }; 349 u8 *p = *pp; 350 u32 state; 351 u8 *header = (u8 *)&ctx->state.header; 352 353 state = VB2_BUF_STATE_DONE; 354 355 if (!ctx->header_size) { 356 state = VB2_BUF_STATE_ERROR; 357 for (; p < *pp + sz; p++) { 358 u32 copy; 359 360 p = memchr(p, magic[ctx->comp_magic_cnt], 361 *pp + sz - p); 362 if (!p) { 363 ctx->comp_magic_cnt = 0; 364 p = *pp + sz; 365 break; 366 } 367 copy = sizeof(magic) - ctx->comp_magic_cnt; 368 if (*pp + sz - p < copy) 369 copy = *pp + sz - p; 370 371 memcpy(header + ctx->comp_magic_cnt, p, copy); 372 ctx->comp_magic_cnt += copy; 373 if (!memcmp(header, magic, ctx->comp_magic_cnt)) { 374 p += copy; 375 state = VB2_BUF_STATE_DONE; 376 break; 377 } 378 ctx->comp_magic_cnt = 0; 379 } 380 if (ctx->comp_magic_cnt < sizeof(magic)) { 381 *pp = p; 382 return state; 383 } 384 ctx->header_size = sizeof(magic); 385 } 386 387 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 388 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size; 389 390 if (*pp + sz - p < copy) 391 copy = *pp + sz - p; 392 393 memcpy(header + ctx->header_size, p, copy); 394 p += copy; 395 ctx->header_size += copy; 396 } 397 *pp = p; 398 return state; 399 } 400 401 /* device_run() - prepares and starts the device */ 402 static void device_run(void *priv) 403 { 404 struct vicodec_ctx *ctx = priv; 405 struct vicodec_dev *dev = ctx->dev; 406 struct vb2_v4l2_buffer *src_buf, *dst_buf; 407 struct vicodec_q_data *q_src, *q_dst; 408 u32 state; 409 struct media_request *src_req; 410 411 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 412 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 413 src_req = src_buf->vb2_buf.req_obj.req; 414 415 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 416 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 417 418 state = VB2_BUF_STATE_DONE; 419 if (device_process(ctx, src_buf, dst_buf)) 420 state = VB2_BUF_STATE_ERROR; 421 else 422 dst_buf->sequence = q_dst->sequence++; 423 dst_buf->flags &= ~V4L2_BUF_FLAG_LAST; 424 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false); 425 426 spin_lock(ctx->lock); 427 if (!ctx->comp_has_next_frame && 428 v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) { 429 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 430 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 431 v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx); 432 } 433 if (ctx->is_enc || ctx->is_stateless) { 434 src_buf->sequence = q_src->sequence++; 435 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 436 v4l2_m2m_buf_done(src_buf, state); 437 } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) { 438 src_buf->sequence = q_src->sequence++; 439 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 440 v4l2_m2m_buf_done(src_buf, state); 441 ctx->cur_buf_offset = 0; 442 ctx->comp_has_next_frame = false; 443 } 444 v4l2_m2m_buf_done(dst_buf, state); 445 446 ctx->comp_size = 0; 447 ctx->header_size = 0; 448 ctx->comp_magic_cnt = 0; 449 ctx->comp_has_frame = false; 450 spin_unlock(ctx->lock); 451 if (ctx->is_stateless && src_req) 452 v4l2_ctrl_request_complete(src_req, &ctx->hdl); 453 454 if (ctx->is_enc) 455 v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx); 456 else if (ctx->is_stateless) 457 v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev, 458 ctx->fh.m2m_ctx); 459 else 460 v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx); 461 } 462 463 static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state) 464 { 465 struct vb2_v4l2_buffer *src_buf; 466 struct vicodec_q_data *q_src; 467 468 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); 469 spin_lock(ctx->lock); 470 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 471 src_buf->sequence = q_src->sequence++; 472 v4l2_m2m_buf_done(src_buf, state); 473 ctx->cur_buf_offset = 0; 474 spin_unlock(ctx->lock); 475 } 476 477 static const struct v4l2_fwht_pixfmt_info * 478 info_from_header(const struct fwht_cframe_hdr *p_hdr) 479 { 480 unsigned int flags = ntohl(p_hdr->flags); 481 unsigned int width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 482 unsigned int height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 483 unsigned int components_num = 3; 484 unsigned int pixenc = 0; 485 unsigned int version = ntohl(p_hdr->version); 486 487 if (version >= 2) { 488 components_num = 1 + ((flags & V4L2_FWHT_FL_COMPONENTS_NUM_MSK) >> 489 V4L2_FWHT_FL_COMPONENTS_NUM_OFFSET); 490 pixenc = (flags & V4L2_FWHT_FL_PIXENC_MSK); 491 } 492 return v4l2_fwht_find_nth_fmt(width_div, height_div, 493 components_num, pixenc, 0); 494 } 495 496 static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr) 497 { 498 const struct v4l2_fwht_pixfmt_info *info; 499 unsigned int w = ntohl(p_hdr->width); 500 unsigned int h = ntohl(p_hdr->height); 501 unsigned int version = ntohl(p_hdr->version); 502 unsigned int flags = ntohl(p_hdr->flags); 503 504 if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT) 505 return false; 506 507 if (!validate_by_version(flags, version)) 508 return false; 509 510 info = info_from_header(p_hdr); 511 if (!info) 512 return false; 513 return true; 514 } 515 516 static void update_capture_data_from_header(struct vicodec_ctx *ctx) 517 { 518 struct vicodec_q_data *q_dst = get_q_data(ctx, 519 V4L2_BUF_TYPE_VIDEO_CAPTURE); 520 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 521 const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr); 522 unsigned int flags = ntohl(p_hdr->flags); 523 unsigned int hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 524 unsigned int hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 525 526 /* 527 * This function should not be used by a stateless codec since 528 * it changes values in q_data that are not request specific 529 */ 530 WARN_ON(ctx->is_stateless); 531 532 q_dst->info = info; 533 q_dst->visible_width = ntohl(p_hdr->width); 534 q_dst->visible_height = ntohl(p_hdr->height); 535 q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div); 536 q_dst->coded_height = vic_round_dim(q_dst->visible_height, 537 hdr_height_div); 538 539 q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height * 540 q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div; 541 ctx->state.colorspace = ntohl(p_hdr->colorspace); 542 543 ctx->state.xfer_func = ntohl(p_hdr->xfer_func); 544 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc); 545 ctx->state.quantization = ntohl(p_hdr->quantization); 546 } 547 548 static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf, 549 const struct vb2_v4l2_buffer *src_buf, 550 struct vicodec_ctx *ctx) 551 { 552 struct vicodec_q_data *q_dst = get_q_data(ctx, 553 V4L2_BUF_TYPE_VIDEO_CAPTURE); 554 555 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0); 556 dst_buf->sequence = q_dst->sequence++; 557 558 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc); 559 dst_buf->flags |= V4L2_BUF_FLAG_LAST; 560 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); 561 } 562 563 static int job_ready(void *priv) 564 { 565 static const u8 magic[] = { 566 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff 567 }; 568 struct vicodec_ctx *ctx = priv; 569 struct vb2_v4l2_buffer *src_buf; 570 u8 *p_src; 571 u8 *p; 572 u32 sz; 573 u32 state; 574 struct vicodec_q_data *q_dst = get_q_data(ctx, 575 V4L2_BUF_TYPE_VIDEO_CAPTURE); 576 unsigned int flags; 577 unsigned int hdr_width_div; 578 unsigned int hdr_height_div; 579 unsigned int max_to_copy; 580 unsigned int comp_frame_size; 581 582 if (ctx->source_changed) 583 return 0; 584 if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame) 585 return 1; 586 587 restart: 588 ctx->comp_has_next_frame = false; 589 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); 590 if (!src_buf) 591 return 0; 592 p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0); 593 sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0); 594 p = p_src + ctx->cur_buf_offset; 595 596 state = VB2_BUF_STATE_DONE; 597 598 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 599 state = get_next_header(ctx, &p, p_src + sz - p); 600 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 601 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 602 src_buf)) 603 return 1; 604 job_remove_src_buf(ctx, state); 605 goto restart; 606 } 607 } 608 609 comp_frame_size = ntohl(ctx->state.header.size); 610 611 /* 612 * The current scanned frame might be the first frame of a new 613 * resolution so its size might be larger than ctx->comp_max_size. 614 * In that case it is copied up to the current buffer capacity and 615 * the copy will continue after allocating new large enough buffer 616 * when restreaming 617 */ 618 max_to_copy = min(comp_frame_size, ctx->comp_max_size); 619 620 if (ctx->comp_size < max_to_copy) { 621 u32 copy = max_to_copy - ctx->comp_size; 622 623 if (copy > p_src + sz - p) 624 copy = p_src + sz - p; 625 626 memcpy(ctx->state.compressed_frame + ctx->comp_size, 627 p, copy); 628 p += copy; 629 ctx->comp_size += copy; 630 if (ctx->comp_size < max_to_copy) { 631 if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, 632 src_buf)) 633 return 1; 634 job_remove_src_buf(ctx, state); 635 goto restart; 636 } 637 } 638 ctx->cur_buf_offset = p - p_src; 639 if (ctx->comp_size == comp_frame_size) 640 ctx->comp_has_frame = true; 641 ctx->comp_has_next_frame = false; 642 if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >= 643 sizeof(struct fwht_cframe_hdr)) { 644 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p; 645 u32 frame_size = ntohl(p_hdr->size); 646 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr); 647 648 if (!memcmp(p, magic, sizeof(magic))) 649 ctx->comp_has_next_frame = remaining >= frame_size; 650 } 651 /* 652 * if the header is invalid the device_run will just drop the frame 653 * with an error 654 */ 655 if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame) 656 return 1; 657 flags = ntohl(ctx->state.header.flags); 658 hdr_width_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2; 659 hdr_height_div = (flags & V4L2_FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2; 660 661 if (ntohl(ctx->state.header.width) != q_dst->visible_width || 662 ntohl(ctx->state.header.height) != q_dst->visible_height || 663 !q_dst->info || 664 hdr_width_div != q_dst->info->width_div || 665 hdr_height_div != q_dst->info->height_div) { 666 static const struct v4l2_event rs_event = { 667 .type = V4L2_EVENT_SOURCE_CHANGE, 668 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 669 }; 670 671 struct vb2_v4l2_buffer *dst_buf = 672 v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 673 674 update_capture_data_from_header(ctx); 675 v4l2_event_queue_fh(&ctx->fh, &rs_event); 676 set_last_buffer(dst_buf, src_buf, ctx); 677 ctx->source_changed = true; 678 return 0; 679 } 680 return 1; 681 } 682 683 /* 684 * video ioctls 685 */ 686 687 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt) 688 { 689 const struct v4l2_fwht_pixfmt_info *info = 690 v4l2_fwht_find_pixfmt(fmt); 691 692 if (!info) 693 info = v4l2_fwht_get_pixfmt(0); 694 return info; 695 } 696 697 static int vidioc_querycap(struct file *file, void *priv, 698 struct v4l2_capability *cap) 699 { 700 strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver)); 701 strscpy(cap->card, VICODEC_NAME, sizeof(cap->card)); 702 snprintf(cap->bus_info, sizeof(cap->bus_info), 703 "platform:%s", VICODEC_NAME); 704 return 0; 705 } 706 707 static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx, 708 bool is_out) 709 { 710 bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out); 711 712 if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar) 713 return -EINVAL; 714 if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar) 715 return -EINVAL; 716 717 if (is_uncomp) { 718 const struct v4l2_fwht_pixfmt_info *info = 719 get_q_data(ctx, f->type)->info; 720 721 if (ctx->is_enc || 722 !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q)) 723 info = v4l2_fwht_get_pixfmt(f->index); 724 else 725 info = v4l2_fwht_find_nth_fmt(info->width_div, 726 info->height_div, 727 info->components_num, 728 info->pixenc, 729 f->index); 730 if (!info) 731 return -EINVAL; 732 f->pixelformat = info->id; 733 } else { 734 if (f->index) 735 return -EINVAL; 736 f->pixelformat = ctx->is_stateless ? 737 V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT; 738 if (!ctx->is_enc && !ctx->is_stateless) 739 f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION | 740 V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM; 741 } 742 return 0; 743 } 744 745 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, 746 struct v4l2_fmtdesc *f) 747 { 748 struct vicodec_ctx *ctx = file2ctx(file); 749 750 return enum_fmt(f, ctx, false); 751 } 752 753 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv, 754 struct v4l2_fmtdesc *f) 755 { 756 struct vicodec_ctx *ctx = file2ctx(file); 757 758 return enum_fmt(f, ctx, true); 759 } 760 761 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 762 { 763 struct vb2_queue *vq; 764 struct vicodec_q_data *q_data; 765 struct v4l2_pix_format_mplane *pix_mp; 766 struct v4l2_pix_format *pix; 767 const struct v4l2_fwht_pixfmt_info *info; 768 769 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 770 if (!vq) 771 return -EINVAL; 772 773 q_data = get_q_data(ctx, f->type); 774 info = q_data->info; 775 776 switch (f->type) { 777 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 778 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 779 if (multiplanar) 780 return -EINVAL; 781 pix = &f->fmt.pix; 782 pix->width = q_data->coded_width; 783 pix->height = q_data->coded_height; 784 pix->field = V4L2_FIELD_NONE; 785 pix->pixelformat = info->id; 786 pix->bytesperline = q_data->coded_width * 787 info->bytesperline_mult; 788 pix->sizeimage = q_data->sizeimage; 789 pix->colorspace = ctx->state.colorspace; 790 pix->xfer_func = ctx->state.xfer_func; 791 pix->ycbcr_enc = ctx->state.ycbcr_enc; 792 pix->quantization = ctx->state.quantization; 793 break; 794 795 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 796 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 797 if (!multiplanar) 798 return -EINVAL; 799 pix_mp = &f->fmt.pix_mp; 800 pix_mp->width = q_data->coded_width; 801 pix_mp->height = q_data->coded_height; 802 pix_mp->field = V4L2_FIELD_NONE; 803 pix_mp->pixelformat = info->id; 804 pix_mp->num_planes = 1; 805 pix_mp->plane_fmt[0].bytesperline = 806 q_data->coded_width * info->bytesperline_mult; 807 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage; 808 pix_mp->colorspace = ctx->state.colorspace; 809 pix_mp->xfer_func = ctx->state.xfer_func; 810 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 811 pix_mp->quantization = ctx->state.quantization; 812 break; 813 default: 814 return -EINVAL; 815 } 816 return 0; 817 } 818 819 static int vidioc_g_fmt_vid_out(struct file *file, void *priv, 820 struct v4l2_format *f) 821 { 822 return vidioc_g_fmt(file2ctx(file), f); 823 } 824 825 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, 826 struct v4l2_format *f) 827 { 828 return vidioc_g_fmt(file2ctx(file), f); 829 } 830 831 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 832 { 833 struct v4l2_pix_format_mplane *pix_mp; 834 struct v4l2_pix_format *pix; 835 struct v4l2_plane_pix_format *plane; 836 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 837 &pixfmt_stateless_fwht : &pixfmt_fwht; 838 839 switch (f->type) { 840 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 841 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 842 pix = &f->fmt.pix; 843 if (pix->pixelformat != V4L2_PIX_FMT_FWHT && 844 pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 845 info = find_fmt(pix->pixelformat); 846 847 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH); 848 pix->width = vic_round_dim(pix->width, info->width_div); 849 850 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT); 851 pix->height = vic_round_dim(pix->height, info->height_div); 852 853 pix->field = V4L2_FIELD_NONE; 854 pix->bytesperline = 855 pix->width * info->bytesperline_mult; 856 pix->sizeimage = pix->width * pix->height * 857 info->sizeimage_mult / info->sizeimage_div; 858 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 859 pix->sizeimage += sizeof(struct fwht_cframe_hdr); 860 break; 861 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 862 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 863 pix_mp = &f->fmt.pix_mp; 864 plane = pix_mp->plane_fmt; 865 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT && 866 pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS) 867 info = find_fmt(pix_mp->pixelformat); 868 pix_mp->num_planes = 1; 869 870 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH); 871 pix_mp->width = vic_round_dim(pix_mp->width, info->width_div); 872 873 pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT); 874 pix_mp->height = vic_round_dim(pix_mp->height, 875 info->height_div); 876 877 pix_mp->field = V4L2_FIELD_NONE; 878 plane->bytesperline = 879 pix_mp->width * info->bytesperline_mult; 880 plane->sizeimage = pix_mp->width * pix_mp->height * 881 info->sizeimage_mult / info->sizeimage_div; 882 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 883 plane->sizeimage += sizeof(struct fwht_cframe_hdr); 884 break; 885 default: 886 return -EINVAL; 887 } 888 889 return 0; 890 } 891 892 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, 893 struct v4l2_format *f) 894 { 895 struct vicodec_ctx *ctx = file2ctx(file); 896 struct v4l2_pix_format_mplane *pix_mp; 897 struct v4l2_pix_format *pix; 898 899 switch (f->type) { 900 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 901 if (multiplanar) 902 return -EINVAL; 903 pix = &f->fmt.pix; 904 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 905 find_fmt(f->fmt.pix.pixelformat)->id; 906 pix->colorspace = ctx->state.colorspace; 907 pix->xfer_func = ctx->state.xfer_func; 908 pix->ycbcr_enc = ctx->state.ycbcr_enc; 909 pix->quantization = ctx->state.quantization; 910 break; 911 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 912 if (!multiplanar) 913 return -EINVAL; 914 pix_mp = &f->fmt.pix_mp; 915 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT : 916 find_fmt(pix_mp->pixelformat)->id; 917 pix_mp->colorspace = ctx->state.colorspace; 918 pix_mp->xfer_func = ctx->state.xfer_func; 919 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc; 920 pix_mp->quantization = ctx->state.quantization; 921 break; 922 default: 923 return -EINVAL; 924 } 925 926 return vidioc_try_fmt(ctx, f); 927 } 928 929 static int vidioc_try_fmt_vid_out(struct file *file, void *priv, 930 struct v4l2_format *f) 931 { 932 struct vicodec_ctx *ctx = file2ctx(file); 933 struct v4l2_pix_format_mplane *pix_mp; 934 struct v4l2_pix_format *pix; 935 936 switch (f->type) { 937 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 938 if (multiplanar) 939 return -EINVAL; 940 pix = &f->fmt.pix; 941 if (ctx->is_enc) 942 pix->pixelformat = find_fmt(pix->pixelformat)->id; 943 else if (ctx->is_stateless) 944 pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 945 else 946 pix->pixelformat = V4L2_PIX_FMT_FWHT; 947 if (!pix->colorspace) 948 pix->colorspace = V4L2_COLORSPACE_REC709; 949 break; 950 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 951 if (!multiplanar) 952 return -EINVAL; 953 pix_mp = &f->fmt.pix_mp; 954 if (ctx->is_enc) 955 pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id; 956 else if (ctx->is_stateless) 957 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS; 958 else 959 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT; 960 if (!pix_mp->colorspace) 961 pix_mp->colorspace = V4L2_COLORSPACE_REC709; 962 break; 963 default: 964 return -EINVAL; 965 } 966 967 return vidioc_try_fmt(ctx, f); 968 } 969 970 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f) 971 { 972 struct vicodec_q_data *q_data; 973 struct vb2_queue *vq; 974 bool fmt_changed = true; 975 struct v4l2_pix_format_mplane *pix_mp; 976 struct v4l2_pix_format *pix; 977 978 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 979 if (!vq) 980 return -EINVAL; 981 982 q_data = get_q_data(ctx, f->type); 983 if (!q_data) 984 return -EINVAL; 985 986 switch (f->type) { 987 case V4L2_BUF_TYPE_VIDEO_CAPTURE: 988 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 989 pix = &f->fmt.pix; 990 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 991 fmt_changed = 992 !q_data->info || 993 q_data->info->id != pix->pixelformat || 994 q_data->coded_width != pix->width || 995 q_data->coded_height != pix->height; 996 997 if (vb2_is_busy(vq) && fmt_changed) 998 return -EBUSY; 999 1000 if (pix->pixelformat == V4L2_PIX_FMT_FWHT) 1001 q_data->info = &pixfmt_fwht; 1002 else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1003 q_data->info = &pixfmt_stateless_fwht; 1004 else 1005 q_data->info = find_fmt(pix->pixelformat); 1006 q_data->coded_width = pix->width; 1007 q_data->coded_height = pix->height; 1008 q_data->sizeimage = pix->sizeimage; 1009 break; 1010 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE: 1011 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1012 pix_mp = &f->fmt.pix_mp; 1013 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type)) 1014 fmt_changed = 1015 !q_data->info || 1016 q_data->info->id != pix_mp->pixelformat || 1017 q_data->coded_width != pix_mp->width || 1018 q_data->coded_height != pix_mp->height; 1019 1020 if (vb2_is_busy(vq) && fmt_changed) 1021 return -EBUSY; 1022 1023 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT) 1024 q_data->info = &pixfmt_fwht; 1025 else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS) 1026 q_data->info = &pixfmt_stateless_fwht; 1027 else 1028 q_data->info = find_fmt(pix_mp->pixelformat); 1029 q_data->coded_width = pix_mp->width; 1030 q_data->coded_height = pix_mp->height; 1031 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage; 1032 break; 1033 default: 1034 return -EINVAL; 1035 } 1036 1037 dprintk(ctx->dev, 1038 "Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n", 1039 f->type, q_data->coded_width, q_data->coded_height, 1040 q_data->info->id); 1041 1042 return 0; 1043 } 1044 1045 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, 1046 struct v4l2_format *f) 1047 { 1048 int ret; 1049 1050 ret = vidioc_try_fmt_vid_cap(file, priv, f); 1051 if (ret) 1052 return ret; 1053 1054 return vidioc_s_fmt(file2ctx(file), f); 1055 } 1056 1057 static int vidioc_s_fmt_vid_out(struct file *file, void *priv, 1058 struct v4l2_format *f) 1059 { 1060 struct vicodec_ctx *ctx = file2ctx(file); 1061 struct vicodec_q_data *q_data; 1062 struct vicodec_q_data *q_data_cap; 1063 struct v4l2_pix_format *pix; 1064 struct v4l2_pix_format_mplane *pix_mp; 1065 u32 coded_w = 0, coded_h = 0; 1066 unsigned int size = 0; 1067 int ret; 1068 1069 q_data = get_q_data(ctx, f->type); 1070 q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); 1071 1072 ret = vidioc_try_fmt_vid_out(file, priv, f); 1073 if (ret) 1074 return ret; 1075 1076 if (ctx->is_enc) { 1077 struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); 1078 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1079 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1080 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ? 1081 &pixfmt_stateless_fwht : &pixfmt_fwht; 1082 1083 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1084 coded_w = f->fmt.pix.width; 1085 coded_h = f->fmt.pix.height; 1086 } else { 1087 coded_w = f->fmt.pix_mp.width; 1088 coded_h = f->fmt.pix_mp.height; 1089 } 1090 if (vb2_is_busy(vq) && (coded_w != q_data->coded_width || 1091 coded_h != q_data->coded_height)) 1092 return -EBUSY; 1093 size = coded_w * coded_h * 1094 info->sizeimage_mult / info->sizeimage_div; 1095 if (!ctx->is_stateless) 1096 size += sizeof(struct fwht_cframe_hdr); 1097 1098 if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage) 1099 return -EBUSY; 1100 } 1101 1102 ret = vidioc_s_fmt(file2ctx(file), f); 1103 if (!ret) { 1104 if (ctx->is_enc) { 1105 q_data->visible_width = coded_w; 1106 q_data->visible_height = coded_h; 1107 q_data_cap->coded_width = coded_w; 1108 q_data_cap->coded_height = coded_h; 1109 q_data_cap->sizeimage = size; 1110 } 1111 1112 switch (f->type) { 1113 case V4L2_BUF_TYPE_VIDEO_OUTPUT: 1114 pix = &f->fmt.pix; 1115 ctx->state.colorspace = pix->colorspace; 1116 ctx->state.xfer_func = pix->xfer_func; 1117 ctx->state.ycbcr_enc = pix->ycbcr_enc; 1118 ctx->state.quantization = pix->quantization; 1119 break; 1120 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE: 1121 pix_mp = &f->fmt.pix_mp; 1122 ctx->state.colorspace = pix_mp->colorspace; 1123 ctx->state.xfer_func = pix_mp->xfer_func; 1124 ctx->state.ycbcr_enc = pix_mp->ycbcr_enc; 1125 ctx->state.quantization = pix_mp->quantization; 1126 break; 1127 default: 1128 break; 1129 } 1130 } 1131 return ret; 1132 } 1133 1134 static int vidioc_g_selection(struct file *file, void *priv, 1135 struct v4l2_selection *s) 1136 { 1137 struct vicodec_ctx *ctx = file2ctx(file); 1138 struct vicodec_q_data *q_data; 1139 1140 q_data = get_q_data(ctx, s->type); 1141 if (!q_data) 1142 return -EINVAL; 1143 /* 1144 * encoder supports only cropping on the OUTPUT buffer 1145 * decoder supports only composing on the CAPTURE buffer 1146 */ 1147 if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { 1148 switch (s->target) { 1149 case V4L2_SEL_TGT_CROP: 1150 s->r.left = 0; 1151 s->r.top = 0; 1152 s->r.width = q_data->visible_width; 1153 s->r.height = q_data->visible_height; 1154 return 0; 1155 case V4L2_SEL_TGT_CROP_DEFAULT: 1156 case V4L2_SEL_TGT_CROP_BOUNDS: 1157 s->r.left = 0; 1158 s->r.top = 0; 1159 s->r.width = q_data->coded_width; 1160 s->r.height = q_data->coded_height; 1161 return 0; 1162 } 1163 } else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { 1164 switch (s->target) { 1165 case V4L2_SEL_TGT_COMPOSE: 1166 s->r.left = 0; 1167 s->r.top = 0; 1168 s->r.width = q_data->visible_width; 1169 s->r.height = q_data->visible_height; 1170 return 0; 1171 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 1172 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 1173 s->r.left = 0; 1174 s->r.top = 0; 1175 s->r.width = q_data->coded_width; 1176 s->r.height = q_data->coded_height; 1177 return 0; 1178 } 1179 } 1180 return -EINVAL; 1181 } 1182 1183 static int vidioc_s_selection(struct file *file, void *priv, 1184 struct v4l2_selection *s) 1185 { 1186 struct vicodec_ctx *ctx = file2ctx(file); 1187 struct vicodec_q_data *q_data; 1188 1189 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) 1190 return -EINVAL; 1191 1192 q_data = get_q_data(ctx, s->type); 1193 if (!q_data) 1194 return -EINVAL; 1195 1196 if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP) 1197 return -EINVAL; 1198 1199 s->r.left = 0; 1200 s->r.top = 0; 1201 q_data->visible_width = clamp(s->r.width, MIN_WIDTH, 1202 q_data->coded_width); 1203 s->r.width = q_data->visible_width; 1204 q_data->visible_height = clamp(s->r.height, MIN_HEIGHT, 1205 q_data->coded_height); 1206 s->r.height = q_data->visible_height; 1207 return 0; 1208 } 1209 1210 static int vicodec_encoder_cmd(struct file *file, void *fh, 1211 struct v4l2_encoder_cmd *ec) 1212 { 1213 struct vicodec_ctx *ctx = file2ctx(file); 1214 int ret; 1215 1216 ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec); 1217 if (ret < 0) 1218 return ret; 1219 1220 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q)) 1221 return 0; 1222 1223 ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, ec); 1224 if (ret < 0) 1225 return ret; 1226 1227 if (ec->cmd == V4L2_ENC_CMD_STOP && 1228 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1229 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1230 1231 if (ec->cmd == V4L2_ENC_CMD_START && 1232 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1233 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q); 1234 1235 return 0; 1236 } 1237 1238 static int vicodec_decoder_cmd(struct file *file, void *fh, 1239 struct v4l2_decoder_cmd *dc) 1240 { 1241 struct vicodec_ctx *ctx = file2ctx(file); 1242 int ret; 1243 1244 /* 1245 * This ioctl should not be used with a stateless codec that doesn't 1246 * support holding buffers and the associated flush command. 1247 */ 1248 WARN_ON(ctx->is_stateless); 1249 1250 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc); 1251 if (ret < 0) 1252 return ret; 1253 1254 if (!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 .vidioc_remove_bufs = v4l2_m2m_ioctl_remove_bufs, 1349 1350 .vidioc_streamon = v4l2_m2m_ioctl_streamon, 1351 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, 1352 1353 .vidioc_g_selection = vidioc_g_selection, 1354 .vidioc_s_selection = vidioc_s_selection, 1355 1356 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd, 1357 .vidioc_encoder_cmd = vicodec_encoder_cmd, 1358 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd, 1359 .vidioc_decoder_cmd = vicodec_decoder_cmd, 1360 .vidioc_enum_framesizes = vicodec_enum_framesizes, 1361 1362 .vidioc_subscribe_event = vicodec_subscribe_event, 1363 .vidioc_unsubscribe_event = v4l2_event_unsubscribe, 1364 }; 1365 1366 1367 /* 1368 * Queue operations 1369 */ 1370 1371 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, 1372 unsigned int *nplanes, unsigned int sizes[], 1373 struct device *alloc_devs[]) 1374 { 1375 struct vicodec_ctx *ctx = vb2_get_drv_priv(vq); 1376 struct vicodec_q_data *q_data = get_q_data(ctx, vq->type); 1377 unsigned int size = q_data->sizeimage; 1378 1379 if (*nplanes) 1380 return sizes[0] < size ? -EINVAL : 0; 1381 1382 *nplanes = 1; 1383 sizes[0] = size; 1384 q_data->vb2_sizeimage = size; 1385 return 0; 1386 } 1387 1388 static int vicodec_buf_out_validate(struct vb2_buffer *vb) 1389 { 1390 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1391 1392 vbuf->field = V4L2_FIELD_NONE; 1393 return 0; 1394 } 1395 1396 static int vicodec_buf_prepare(struct vb2_buffer *vb) 1397 { 1398 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1399 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1400 struct vicodec_q_data *q_data; 1401 1402 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type); 1403 1404 q_data = get_q_data(ctx, vb->vb2_queue->type); 1405 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) { 1406 if (vbuf->field == V4L2_FIELD_ANY) 1407 vbuf->field = V4L2_FIELD_NONE; 1408 if (vbuf->field != V4L2_FIELD_NONE) { 1409 dprintk(ctx->dev, "%s field isn't supported\n", 1410 __func__); 1411 return -EINVAL; 1412 } 1413 } 1414 1415 if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) { 1416 dprintk(ctx->dev, 1417 "%s data will not fit into plane (%lu < %lu)\n", 1418 __func__, vb2_plane_size(vb, 0), 1419 (long)q_data->vb2_sizeimage); 1420 return -EINVAL; 1421 } 1422 1423 return 0; 1424 } 1425 1426 static void vicodec_buf_queue(struct vb2_buffer *vb) 1427 { 1428 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 1429 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1430 unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0); 1431 u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0); 1432 u8 *p = p_src; 1433 struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1434 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1435 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, 1436 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1437 bool header_valid = false; 1438 static const struct v4l2_event rs_event = { 1439 .type = V4L2_EVENT_SOURCE_CHANGE, 1440 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION, 1441 }; 1442 1443 if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) && 1444 vb2_is_streaming(vb->vb2_queue) && 1445 v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) { 1446 unsigned int i; 1447 1448 for (i = 0; i < vb->num_planes; i++) 1449 vb2_set_plane_payload(vb, i, 0); 1450 1451 vbuf->field = V4L2_FIELD_NONE; 1452 vbuf->sequence = 1453 get_q_data(ctx, vb->vb2_queue->type)->sequence++; 1454 1455 v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf); 1456 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1457 return; 1458 } 1459 1460 /* buf_queue handles only the first source change event */ 1461 if (ctx->first_source_change_sent) { 1462 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1463 return; 1464 } 1465 1466 /* 1467 * if both queues are streaming, the source change event is 1468 * handled in job_ready 1469 */ 1470 if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) { 1471 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1472 return; 1473 } 1474 1475 /* 1476 * source change event is relevant only for the stateful decoder 1477 * in the compressed stream 1478 */ 1479 if (ctx->is_stateless || ctx->is_enc || 1480 V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) { 1481 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1482 return; 1483 } 1484 1485 do { 1486 enum vb2_buffer_state state = 1487 get_next_header(ctx, &p, p_src + sz - p); 1488 1489 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) { 1490 v4l2_m2m_buf_done(vbuf, state); 1491 return; 1492 } 1493 header_valid = is_header_valid(&ctx->state.header); 1494 /* 1495 * p points right after the end of the header in the 1496 * buffer. If the header is invalid we set p to point 1497 * to the next byte after the start of the header 1498 */ 1499 if (!header_valid) { 1500 p = p - sizeof(struct fwht_cframe_hdr) + 1; 1501 if (p < p_src) 1502 p = p_src; 1503 ctx->header_size = 0; 1504 ctx->comp_magic_cnt = 0; 1505 } 1506 1507 } while (!header_valid); 1508 1509 ctx->cur_buf_offset = p - p_src; 1510 update_capture_data_from_header(ctx); 1511 ctx->first_source_change_sent = true; 1512 v4l2_event_queue_fh(&ctx->fh, &rs_event); 1513 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); 1514 } 1515 1516 static void vicodec_return_bufs(struct vb2_queue *q, u32 state) 1517 { 1518 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1519 struct vb2_v4l2_buffer *vbuf; 1520 1521 for (;;) { 1522 if (V4L2_TYPE_IS_OUTPUT(q->type)) 1523 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); 1524 else 1525 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); 1526 if (vbuf == NULL) 1527 return; 1528 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req, 1529 &ctx->hdl); 1530 spin_lock(ctx->lock); 1531 v4l2_m2m_buf_done(vbuf, state); 1532 spin_unlock(ctx->lock); 1533 } 1534 } 1535 1536 static unsigned int total_frame_size(struct vicodec_q_data *q_data) 1537 { 1538 unsigned int size; 1539 unsigned int chroma_div; 1540 1541 if (!q_data->info) { 1542 WARN_ON(1); 1543 return 0; 1544 } 1545 size = q_data->coded_width * q_data->coded_height; 1546 chroma_div = q_data->info->width_div * q_data->info->height_div; 1547 1548 if (q_data->info->components_num == 4) 1549 return 2 * size + 2 * (size / chroma_div); 1550 else if (q_data->info->components_num == 3) 1551 return size + 2 * (size / chroma_div); 1552 return size; 1553 } 1554 1555 static int vicodec_start_streaming(struct vb2_queue *q, 1556 unsigned int count) 1557 { 1558 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1559 struct vicodec_q_data *q_data = get_q_data(ctx, q->type); 1560 struct v4l2_fwht_state *state = &ctx->state; 1561 const struct v4l2_fwht_pixfmt_info *info = q_data->info; 1562 unsigned int size = q_data->coded_width * q_data->coded_height; 1563 unsigned int chroma_div; 1564 unsigned int total_planes_size; 1565 u8 *new_comp_frame = NULL; 1566 1567 chroma_div = info->width_div * info->height_div; 1568 q_data->sequence = 0; 1569 1570 v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q); 1571 1572 state->gop_cnt = 0; 1573 1574 if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1575 (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->is_enc)) 1576 return 0; 1577 1578 if (info->id == V4L2_PIX_FMT_FWHT || 1579 info->id == V4L2_PIX_FMT_FWHT_STATELESS) { 1580 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1581 return -EINVAL; 1582 } 1583 total_planes_size = total_frame_size(q_data); 1584 ctx->comp_max_size = total_planes_size; 1585 1586 state->visible_width = q_data->visible_width; 1587 state->visible_height = q_data->visible_height; 1588 state->coded_width = q_data->coded_width; 1589 state->coded_height = q_data->coded_height; 1590 state->stride = q_data->coded_width * 1591 info->bytesperline_mult; 1592 1593 if (ctx->is_stateless) { 1594 state->ref_stride = state->stride; 1595 return 0; 1596 } 1597 state->ref_stride = q_data->coded_width * info->luma_alpha_step; 1598 1599 state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL); 1600 state->ref_frame.luma = state->ref_frame.buf; 1601 new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL); 1602 1603 if (!state->ref_frame.luma || !new_comp_frame) { 1604 kvfree(state->ref_frame.luma); 1605 kvfree(new_comp_frame); 1606 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED); 1607 return -ENOMEM; 1608 } 1609 /* 1610 * if state->compressed_frame was already allocated then 1611 * it contain data of the first frame of the new resolution 1612 */ 1613 if (state->compressed_frame) { 1614 if (ctx->comp_size > ctx->comp_max_size) 1615 ctx->comp_size = ctx->comp_max_size; 1616 1617 memcpy(new_comp_frame, 1618 state->compressed_frame, ctx->comp_size); 1619 } 1620 1621 kvfree(state->compressed_frame); 1622 state->compressed_frame = new_comp_frame; 1623 1624 if (info->components_num < 3) { 1625 state->ref_frame.cb = NULL; 1626 state->ref_frame.cr = NULL; 1627 state->ref_frame.alpha = NULL; 1628 return 0; 1629 } 1630 1631 state->ref_frame.cb = state->ref_frame.luma + size; 1632 state->ref_frame.cr = state->ref_frame.cb + size / chroma_div; 1633 1634 if (info->components_num == 4) 1635 state->ref_frame.alpha = 1636 state->ref_frame.cr + size / chroma_div; 1637 else 1638 state->ref_frame.alpha = NULL; 1639 1640 return 0; 1641 } 1642 1643 static void vicodec_stop_streaming(struct vb2_queue *q) 1644 { 1645 struct vicodec_ctx *ctx = vb2_get_drv_priv(q); 1646 1647 vicodec_return_bufs(q, VB2_BUF_STATE_ERROR); 1648 1649 v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q); 1650 1651 if (V4L2_TYPE_IS_OUTPUT(q->type) && 1652 v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) 1653 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event); 1654 1655 if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type)) 1656 ctx->first_source_change_sent = false; 1657 1658 if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) || 1659 (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) { 1660 if (!ctx->is_stateless) 1661 kvfree(ctx->state.ref_frame.buf); 1662 ctx->state.ref_frame.buf = NULL; 1663 ctx->state.ref_frame.luma = NULL; 1664 ctx->comp_max_size = 0; 1665 ctx->source_changed = false; 1666 } 1667 if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) { 1668 ctx->cur_buf_offset = 0; 1669 ctx->comp_size = 0; 1670 ctx->header_size = 0; 1671 ctx->comp_magic_cnt = 0; 1672 ctx->comp_has_frame = false; 1673 ctx->comp_has_next_frame = false; 1674 } 1675 } 1676 1677 static void vicodec_buf_request_complete(struct vb2_buffer *vb) 1678 { 1679 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); 1680 1681 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl); 1682 } 1683 1684 1685 static const struct vb2_ops vicodec_qops = { 1686 .queue_setup = vicodec_queue_setup, 1687 .buf_out_validate = vicodec_buf_out_validate, 1688 .buf_prepare = vicodec_buf_prepare, 1689 .buf_queue = vicodec_buf_queue, 1690 .buf_request_complete = vicodec_buf_request_complete, 1691 .start_streaming = vicodec_start_streaming, 1692 .stop_streaming = vicodec_stop_streaming, 1693 }; 1694 1695 static int queue_init(void *priv, struct vb2_queue *src_vq, 1696 struct vb2_queue *dst_vq) 1697 { 1698 struct vicodec_ctx *ctx = priv; 1699 int ret; 1700 1701 src_vq->type = (multiplanar ? 1702 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : 1703 V4L2_BUF_TYPE_VIDEO_OUTPUT); 1704 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1705 src_vq->drv_priv = ctx; 1706 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1707 src_vq->ops = &vicodec_qops; 1708 src_vq->mem_ops = &vb2_vmalloc_memops; 1709 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1710 if (ctx->is_enc) { 1711 src_vq->lock = &ctx->dev->stateful_enc.mutex; 1712 src_vq->min_reqbufs_allocation = VICODEC_REC_BUFS; 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 } 1718 src_vq->supports_requests = ctx->is_stateless; 1719 src_vq->requires_requests = ctx->is_stateless; 1720 ret = vb2_queue_init(src_vq); 1721 if (ret) 1722 return ret; 1723 1724 dst_vq->type = (multiplanar ? 1725 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE : 1726 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1727 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; 1728 dst_vq->max_num_buffers = 64; 1729 dst_vq->drv_priv = ctx; 1730 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); 1731 dst_vq->ops = &vicodec_qops; 1732 dst_vq->mem_ops = &vb2_vmalloc_memops; 1733 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; 1734 dst_vq->lock = src_vq->lock; 1735 if (!ctx->is_stateless && !ctx->is_enc) 1736 dst_vq->min_reqbufs_allocation = VICODEC_REC_BUFS; 1737 1738 return vb2_queue_init(dst_vq); 1739 } 1740 1741 static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl) 1742 { 1743 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1744 struct vicodec_ctx, hdl); 1745 const struct v4l2_ctrl_fwht_params *params; 1746 struct vicodec_q_data *q_dst = get_q_data(ctx, 1747 V4L2_BUF_TYPE_VIDEO_CAPTURE); 1748 1749 switch (ctrl->id) { 1750 case V4L2_CID_STATELESS_FWHT_PARAMS: 1751 if (!q_dst->info) 1752 return -EINVAL; 1753 params = ctrl->p_new.p_fwht_params; 1754 if (params->width > q_dst->coded_width || 1755 params->width < MIN_WIDTH || 1756 params->height > q_dst->coded_height || 1757 params->height < MIN_HEIGHT) 1758 return -EINVAL; 1759 if (!validate_by_version(params->flags, params->version)) 1760 return -EINVAL; 1761 if (!validate_stateless_params_flags(params, q_dst->info)) 1762 return -EINVAL; 1763 return 0; 1764 default: 1765 return 0; 1766 } 1767 return 0; 1768 } 1769 1770 static void update_header_from_stateless_params(struct vicodec_ctx *ctx, 1771 const struct v4l2_ctrl_fwht_params *params) 1772 { 1773 struct fwht_cframe_hdr *p_hdr = &ctx->state.header; 1774 1775 p_hdr->magic1 = FWHT_MAGIC1; 1776 p_hdr->magic2 = FWHT_MAGIC2; 1777 p_hdr->version = htonl(params->version); 1778 p_hdr->width = htonl(params->width); 1779 p_hdr->height = htonl(params->height); 1780 p_hdr->flags = htonl(params->flags); 1781 p_hdr->colorspace = htonl(params->colorspace); 1782 p_hdr->xfer_func = htonl(params->xfer_func); 1783 p_hdr->ycbcr_enc = htonl(params->ycbcr_enc); 1784 p_hdr->quantization = htonl(params->quantization); 1785 } 1786 1787 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl) 1788 { 1789 struct vicodec_ctx *ctx = container_of(ctrl->handler, 1790 struct vicodec_ctx, hdl); 1791 const struct v4l2_ctrl_fwht_params *params; 1792 1793 switch (ctrl->id) { 1794 case V4L2_CID_MPEG_VIDEO_GOP_SIZE: 1795 ctx->state.gop_size = ctrl->val; 1796 return 0; 1797 case V4L2_CID_FWHT_I_FRAME_QP: 1798 ctx->state.i_frame_qp = ctrl->val; 1799 return 0; 1800 case V4L2_CID_FWHT_P_FRAME_QP: 1801 ctx->state.p_frame_qp = ctrl->val; 1802 return 0; 1803 case V4L2_CID_STATELESS_FWHT_PARAMS: 1804 params = ctrl->p_new.p_fwht_params; 1805 update_header_from_stateless_params(ctx, params); 1806 ctx->state.ref_frame_ts = params->backward_ref_ts; 1807 return 0; 1808 } 1809 return -EINVAL; 1810 } 1811 1812 static const struct v4l2_ctrl_ops vicodec_ctrl_ops = { 1813 .s_ctrl = vicodec_s_ctrl, 1814 .try_ctrl = vicodec_try_ctrl, 1815 }; 1816 1817 static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = { 1818 .ops = &vicodec_ctrl_ops, 1819 .id = V4L2_CID_STATELESS_FWHT_PARAMS, 1820 .elem_size = sizeof(struct v4l2_ctrl_fwht_params), 1821 }; 1822 1823 /* 1824 * File operations 1825 */ 1826 static int vicodec_open(struct file *file) 1827 { 1828 const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0); 1829 struct video_device *vfd = video_devdata(file); 1830 struct vicodec_dev *dev = video_drvdata(file); 1831 struct vicodec_ctx *ctx = NULL; 1832 struct v4l2_ctrl_handler *hdl; 1833 unsigned int raw_size; 1834 unsigned int comp_size; 1835 int rc = 0; 1836 1837 if (mutex_lock_interruptible(vfd->lock)) 1838 return -ERESTARTSYS; 1839 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); 1840 if (!ctx) { 1841 rc = -ENOMEM; 1842 goto open_unlock; 1843 } 1844 1845 if (vfd == &dev->stateful_enc.vfd) 1846 ctx->is_enc = true; 1847 else if (vfd == &dev->stateless_dec.vfd) 1848 ctx->is_stateless = true; 1849 1850 v4l2_fh_init(&ctx->fh, video_devdata(file)); 1851 file->private_data = &ctx->fh; 1852 ctx->dev = dev; 1853 hdl = &ctx->hdl; 1854 v4l2_ctrl_handler_init(hdl, 5); 1855 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1856 1, 16, 1, 10); 1857 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP, 1858 1, 31, 1, 20); 1859 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP, 1860 1, 31, 1, 20); 1861 1862 if (ctx->is_stateless) 1863 v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL); 1864 else 1865 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, ctx->is_enc ? 1866 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT : 1867 V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1868 VICODEC_REC_BUFS, VICODEC_REC_BUFS, 1, 1869 VICODEC_REC_BUFS); 1870 1871 if (hdl->error) { 1872 rc = hdl->error; 1873 v4l2_ctrl_handler_free(hdl); 1874 kfree(ctx); 1875 goto open_unlock; 1876 } 1877 ctx->fh.ctrl_handler = hdl; 1878 v4l2_ctrl_handler_setup(hdl); 1879 1880 if (ctx->is_enc) 1881 ctx->q_data[V4L2_M2M_SRC].info = info; 1882 else if (ctx->is_stateless) 1883 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht; 1884 else 1885 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht; 1886 ctx->q_data[V4L2_M2M_SRC].coded_width = 1280; 1887 ctx->q_data[V4L2_M2M_SRC].coded_height = 720; 1888 ctx->q_data[V4L2_M2M_SRC].visible_width = 1280; 1889 ctx->q_data[V4L2_M2M_SRC].visible_height = 720; 1890 raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div; 1891 comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult / 1892 pixfmt_fwht.sizeimage_div; 1893 if (ctx->is_enc) 1894 ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size; 1895 else if (ctx->is_stateless) 1896 ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size; 1897 else 1898 ctx->q_data[V4L2_M2M_SRC].sizeimage = 1899 comp_size + sizeof(struct fwht_cframe_hdr); 1900 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC]; 1901 if (ctx->is_enc) { 1902 ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht; 1903 ctx->q_data[V4L2_M2M_DST].sizeimage = 1904 comp_size + sizeof(struct fwht_cframe_hdr); 1905 } else { 1906 ctx->q_data[V4L2_M2M_DST].info = info; 1907 ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size; 1908 } 1909 1910 ctx->state.colorspace = V4L2_COLORSPACE_REC709; 1911 1912 if (ctx->is_enc) { 1913 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev, 1914 ctx, &queue_init); 1915 ctx->lock = &dev->stateful_enc.lock; 1916 } else if (ctx->is_stateless) { 1917 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev, 1918 ctx, &queue_init); 1919 ctx->lock = &dev->stateless_dec.lock; 1920 } else { 1921 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev, 1922 ctx, &queue_init); 1923 ctx->lock = &dev->stateful_dec.lock; 1924 } 1925 1926 if (IS_ERR(ctx->fh.m2m_ctx)) { 1927 rc = PTR_ERR(ctx->fh.m2m_ctx); 1928 1929 v4l2_ctrl_handler_free(hdl); 1930 v4l2_fh_exit(&ctx->fh); 1931 kfree(ctx); 1932 goto open_unlock; 1933 } 1934 1935 v4l2_fh_add(&ctx->fh); 1936 1937 open_unlock: 1938 mutex_unlock(vfd->lock); 1939 return rc; 1940 } 1941 1942 static int vicodec_release(struct file *file) 1943 { 1944 struct video_device *vfd = video_devdata(file); 1945 struct vicodec_ctx *ctx = file2ctx(file); 1946 1947 mutex_lock(vfd->lock); 1948 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); 1949 mutex_unlock(vfd->lock); 1950 v4l2_fh_del(&ctx->fh); 1951 v4l2_fh_exit(&ctx->fh); 1952 v4l2_ctrl_handler_free(&ctx->hdl); 1953 kvfree(ctx->state.compressed_frame); 1954 kfree(ctx); 1955 1956 return 0; 1957 } 1958 1959 static int vicodec_request_validate(struct media_request *req) 1960 { 1961 struct media_request_object *obj; 1962 struct v4l2_ctrl_handler *parent_hdl, *hdl; 1963 struct vicodec_ctx *ctx = NULL; 1964 struct v4l2_ctrl *ctrl; 1965 unsigned int count; 1966 1967 list_for_each_entry(obj, &req->objects, list) { 1968 struct vb2_buffer *vb; 1969 1970 if (vb2_request_object_is_buffer(obj)) { 1971 vb = container_of(obj, struct vb2_buffer, req_obj); 1972 ctx = vb2_get_drv_priv(vb->vb2_queue); 1973 1974 break; 1975 } 1976 } 1977 1978 if (!ctx) { 1979 pr_err("No buffer was provided with the request\n"); 1980 return -ENOENT; 1981 } 1982 1983 count = vb2_request_buffer_cnt(req); 1984 if (!count) { 1985 v4l2_info(&ctx->dev->v4l2_dev, 1986 "No buffer was provided with the request\n"); 1987 return -ENOENT; 1988 } else if (count > 1) { 1989 v4l2_info(&ctx->dev->v4l2_dev, 1990 "More than one buffer was provided with the request\n"); 1991 return -EINVAL; 1992 } 1993 1994 parent_hdl = &ctx->hdl; 1995 1996 hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl); 1997 if (!hdl) { 1998 v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n"); 1999 return -ENOENT; 2000 } 2001 ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl, 2002 vicodec_ctrl_stateless_state.id); 2003 v4l2_ctrl_request_hdl_put(hdl); 2004 if (!ctrl) { 2005 v4l2_info(&ctx->dev->v4l2_dev, 2006 "Missing required codec control\n"); 2007 return -ENOENT; 2008 } 2009 2010 return vb2_request_validate(req); 2011 } 2012 2013 static const struct v4l2_file_operations vicodec_fops = { 2014 .owner = THIS_MODULE, 2015 .open = vicodec_open, 2016 .release = vicodec_release, 2017 .poll = v4l2_m2m_fop_poll, 2018 .unlocked_ioctl = video_ioctl2, 2019 .mmap = v4l2_m2m_fop_mmap, 2020 }; 2021 2022 static const struct video_device vicodec_videodev = { 2023 .name = VICODEC_NAME, 2024 .vfl_dir = VFL_DIR_M2M, 2025 .fops = &vicodec_fops, 2026 .ioctl_ops = &vicodec_ioctl_ops, 2027 .minor = -1, 2028 .release = video_device_release_empty, 2029 }; 2030 2031 static const struct media_device_ops vicodec_m2m_media_ops = { 2032 .req_validate = vicodec_request_validate, 2033 .req_queue = v4l2_m2m_request_queue, 2034 }; 2035 2036 static const struct v4l2_m2m_ops m2m_ops = { 2037 .device_run = device_run, 2038 .job_ready = job_ready, 2039 }; 2040 2041 static int register_instance(struct vicodec_dev *dev, 2042 struct vicodec_dev_instance *dev_instance, 2043 const char *name, bool is_enc, bool is_stateless) 2044 { 2045 struct video_device *vfd; 2046 int ret; 2047 2048 spin_lock_init(&dev_instance->lock); 2049 mutex_init(&dev_instance->mutex); 2050 dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops); 2051 if (IS_ERR(dev_instance->m2m_dev)) { 2052 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n"); 2053 return PTR_ERR(dev_instance->m2m_dev); 2054 } 2055 2056 dev_instance->vfd = vicodec_videodev; 2057 vfd = &dev_instance->vfd; 2058 vfd->lock = &dev_instance->mutex; 2059 vfd->v4l2_dev = &dev->v4l2_dev; 2060 strscpy(vfd->name, name, sizeof(vfd->name)); 2061 vfd->device_caps = V4L2_CAP_STREAMING | 2062 (multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M); 2063 if (is_enc || is_stateless) { 2064 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD); 2065 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD); 2066 } 2067 if (!is_enc) { 2068 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD); 2069 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD); 2070 } 2071 video_set_drvdata(vfd, dev); 2072 2073 ret = video_register_device(vfd, VFL_TYPE_VIDEO, 0); 2074 if (ret) { 2075 v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name); 2076 v4l2_m2m_release(dev_instance->m2m_dev); 2077 return ret; 2078 } 2079 v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n", 2080 name, vfd->num); 2081 return 0; 2082 } 2083 2084 static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev) 2085 { 2086 struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev); 2087 2088 v4l2_device_unregister(&dev->v4l2_dev); 2089 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2090 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2091 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2092 #ifdef CONFIG_MEDIA_CONTROLLER 2093 media_device_cleanup(&dev->mdev); 2094 #endif 2095 kfree(dev); 2096 } 2097 2098 static int vicodec_probe(struct platform_device *pdev) 2099 { 2100 struct vicodec_dev *dev; 2101 int ret; 2102 2103 dev = kzalloc(sizeof(*dev), GFP_KERNEL); 2104 if (!dev) 2105 return -ENOMEM; 2106 2107 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); 2108 if (ret) 2109 goto free_dev; 2110 2111 dev->v4l2_dev.release = vicodec_v4l2_dev_release; 2112 2113 #ifdef CONFIG_MEDIA_CONTROLLER 2114 dev->mdev.dev = &pdev->dev; 2115 strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model)); 2116 strscpy(dev->mdev.bus_info, "platform:vicodec", 2117 sizeof(dev->mdev.bus_info)); 2118 media_device_init(&dev->mdev); 2119 dev->mdev.ops = &vicodec_m2m_media_ops; 2120 dev->v4l2_dev.mdev = &dev->mdev; 2121 #endif 2122 2123 platform_set_drvdata(pdev, dev); 2124 2125 ret = register_instance(dev, &dev->stateful_enc, "stateful-encoder", 2126 true, false); 2127 if (ret) 2128 goto unreg_dev; 2129 2130 ret = register_instance(dev, &dev->stateful_dec, "stateful-decoder", 2131 false, false); 2132 if (ret) 2133 goto unreg_sf_enc; 2134 2135 ret = register_instance(dev, &dev->stateless_dec, "stateless-decoder", 2136 false, true); 2137 if (ret) 2138 goto unreg_sf_dec; 2139 2140 #ifdef CONFIG_MEDIA_CONTROLLER 2141 ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev, 2142 &dev->stateful_enc.vfd, 2143 MEDIA_ENT_F_PROC_VIDEO_ENCODER); 2144 if (ret) { 2145 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n"); 2146 goto unreg_m2m; 2147 } 2148 2149 ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev, 2150 &dev->stateful_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 dec\n"); 2154 goto unreg_m2m_sf_enc_mc; 2155 } 2156 2157 ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev, 2158 &dev->stateless_dec.vfd, 2159 MEDIA_ENT_F_PROC_VIDEO_DECODER); 2160 if (ret) { 2161 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n"); 2162 goto unreg_m2m_sf_dec_mc; 2163 } 2164 2165 ret = media_device_register(&dev->mdev); 2166 if (ret) { 2167 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n"); 2168 goto unreg_m2m_sl_dec_mc; 2169 } 2170 #endif 2171 return 0; 2172 2173 #ifdef CONFIG_MEDIA_CONTROLLER 2174 unreg_m2m_sl_dec_mc: 2175 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2176 unreg_m2m_sf_dec_mc: 2177 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2178 unreg_m2m_sf_enc_mc: 2179 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2180 unreg_m2m: 2181 video_unregister_device(&dev->stateless_dec.vfd); 2182 v4l2_m2m_release(dev->stateless_dec.m2m_dev); 2183 #endif 2184 unreg_sf_dec: 2185 video_unregister_device(&dev->stateful_dec.vfd); 2186 v4l2_m2m_release(dev->stateful_dec.m2m_dev); 2187 unreg_sf_enc: 2188 video_unregister_device(&dev->stateful_enc.vfd); 2189 v4l2_m2m_release(dev->stateful_enc.m2m_dev); 2190 unreg_dev: 2191 v4l2_device_unregister(&dev->v4l2_dev); 2192 free_dev: 2193 kfree(dev); 2194 2195 return ret; 2196 } 2197 2198 static void vicodec_remove(struct platform_device *pdev) 2199 { 2200 struct vicodec_dev *dev = platform_get_drvdata(pdev); 2201 2202 v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME); 2203 2204 #ifdef CONFIG_MEDIA_CONTROLLER 2205 media_device_unregister(&dev->mdev); 2206 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev); 2207 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev); 2208 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev); 2209 #endif 2210 2211 video_unregister_device(&dev->stateful_enc.vfd); 2212 video_unregister_device(&dev->stateful_dec.vfd); 2213 video_unregister_device(&dev->stateless_dec.vfd); 2214 v4l2_device_put(&dev->v4l2_dev); 2215 } 2216 2217 static struct platform_driver vicodec_pdrv = { 2218 .probe = vicodec_probe, 2219 .remove = vicodec_remove, 2220 .driver = { 2221 .name = VICODEC_NAME, 2222 }, 2223 }; 2224 2225 static void __exit vicodec_exit(void) 2226 { 2227 platform_driver_unregister(&vicodec_pdrv); 2228 platform_device_unregister(&vicodec_pdev); 2229 } 2230 2231 static int __init vicodec_init(void) 2232 { 2233 int ret; 2234 2235 ret = platform_device_register(&vicodec_pdev); 2236 if (ret) 2237 return ret; 2238 2239 ret = platform_driver_register(&vicodec_pdrv); 2240 if (ret) 2241 platform_device_unregister(&vicodec_pdev); 2242 2243 return ret; 2244 } 2245 2246 module_init(vicodec_init); 2247 module_exit(vicodec_exit); 2248