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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / media / platform / vicodec / vicodec-core.c
blob82350097503e68185cada9f8e673aa781680a22a
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 bool is_draining;
121 bool next_is_last;
122 bool has_stopped;
123 spinlock_t *lock;
124
125 struct v4l2_ctrl_handler hdl;
126
127 struct vb2_v4l2_buffer *last_src_buf;
128
129 /* Source and destination queue data */
130 struct vicodec_q_data q_data[2];
131 struct v4l2_fwht_state state;
132
133 u32 cur_buf_offset;
134 u32 comp_max_size;
135 u32 comp_size;
136 u32 header_size;
137 u32 comp_magic_cnt;
138 bool comp_has_frame;
139 bool comp_has_next_frame;
140 bool first_source_change_sent;
141 bool source_changed;
142 };
143
144 static const struct v4l2_event vicodec_eos_event = {
145 .type = V4L2_EVENT_EOS
146 };
147
148 static inline struct vicodec_ctx *file2ctx(struct file *file)
149 {
150 return container_of(file->private_data, struct vicodec_ctx, fh);
151 }
152
153 static struct vicodec_q_data *get_q_data(struct vicodec_ctx *ctx,
154 enum v4l2_buf_type type)
155 {
156 switch (type) {
157 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
158 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
159 return &ctx->q_data[V4L2_M2M_SRC];
160 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
161 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
162 return &ctx->q_data[V4L2_M2M_DST];
163 default:
164 break;
165 }
166 return NULL;
167 }
168
169 static void copy_cap_to_ref(const u8 *cap, const struct v4l2_fwht_pixfmt_info *info,
170 struct v4l2_fwht_state *state)
171 {
172 int plane_idx;
173 u8 *p_ref = state->ref_frame.buf;
174 unsigned int cap_stride = state->stride;
175 unsigned int ref_stride = state->ref_stride;
176
177 for (plane_idx = 0; plane_idx < info->planes_num; plane_idx++) {
178 int i;
179 unsigned int h_div = (plane_idx == 1 || plane_idx == 2) ?
180 info->height_div : 1;
181 const u8 *row_cap = cap;
182 u8 *row_ref = p_ref;
183
184 if (info->planes_num == 3 && plane_idx == 1) {
185 cap_stride /= 2;
186 ref_stride /= 2;
187 }
188
189 if (plane_idx == 1 &&
190 (info->id == V4L2_PIX_FMT_NV24 ||
191 info->id == V4L2_PIX_FMT_NV42)) {
192 cap_stride *= 2;
193 ref_stride *= 2;
194 }
195
196 for (i = 0; i < state->visible_height / h_div; i++) {
197 memcpy(row_ref, row_cap, ref_stride);
198 row_ref += ref_stride;
199 row_cap += cap_stride;
200 }
201 cap += cap_stride * (state->coded_height / h_div);
202 p_ref += ref_stride * (state->coded_height / h_div);
203 }
204 }
205
206 static bool validate_by_version(unsigned int flags, unsigned int version)
207 {
208 if (!version || version > FWHT_VERSION)
209 return false;
210
211 if (version >= 2) {
212 unsigned int components_num = 1 +
213 ((flags & FWHT_FL_COMPONENTS_NUM_MSK) >>
214 FWHT_FL_COMPONENTS_NUM_OFFSET);
215 unsigned int pixenc = flags & FWHT_FL_PIXENC_MSK;
216
217 if (components_num == 0 || components_num > 4 || !pixenc)
218 return false;
219 }
220 return true;
221 }
222
223 static bool validate_stateless_params_flags(const struct v4l2_ctrl_fwht_params *params,
224 const struct v4l2_fwht_pixfmt_info *cur_info)
225 {
226 unsigned int width_div =
227 (params->flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
228 unsigned int height_div =
229 (params->flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
230 unsigned int components_num = 3;
231 unsigned int pixenc = 0;
232
233 if (params->version < 3)
234 return false;
235
236 components_num = 1 + ((params->flags & FWHT_FL_COMPONENTS_NUM_MSK) >>
237 FWHT_FL_COMPONENTS_NUM_OFFSET);
238 pixenc = (params->flags & FWHT_FL_PIXENC_MSK);
239 if (v4l2_fwht_validate_fmt(cur_info, width_div, height_div,
240 components_num, pixenc))
241 return true;
242 return false;
243 }
244
245
246 static void update_state_from_header(struct vicodec_ctx *ctx)
247 {
248 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
249
250 ctx->state.visible_width = ntohl(p_hdr->width);
251 ctx->state.visible_height = ntohl(p_hdr->height);
252 ctx->state.colorspace = ntohl(p_hdr->colorspace);
253 ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
254 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
255 ctx->state.quantization = ntohl(p_hdr->quantization);
256 }
257
258 static int device_process(struct vicodec_ctx *ctx,
259 struct vb2_v4l2_buffer *src_vb,
260 struct vb2_v4l2_buffer *dst_vb)
261 {
262 struct vicodec_dev *dev = ctx->dev;
263 struct v4l2_fwht_state *state = &ctx->state;
264 u8 *p_src, *p_dst;
265 int ret = 0;
266
267 if (ctx->is_enc || ctx->is_stateless)
268 p_src = vb2_plane_vaddr(&src_vb->vb2_buf, 0);
269 else
270 p_src = state->compressed_frame;
271
272 if (ctx->is_stateless) {
273 struct media_request *src_req = src_vb->vb2_buf.req_obj.req;
274
275 ret = v4l2_ctrl_request_setup(src_req, &ctx->hdl);
276 if (ret)
277 return ret;
278 update_state_from_header(ctx);
279
280 ctx->state.header.size =
281 htonl(vb2_get_plane_payload(&src_vb->vb2_buf, 0));
282 /*
283 * set the reference buffer from the reference timestamp
284 * only if this is a P-frame
285 */
286 if (!(ntohl(ctx->state.header.flags) & FWHT_FL_I_FRAME)) {
287 struct vb2_buffer *ref_vb2_buf;
288 int ref_buf_idx;
289 struct vb2_queue *vq_cap =
290 v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
291 V4L2_BUF_TYPE_VIDEO_CAPTURE);
292
293 ref_buf_idx = vb2_find_timestamp(vq_cap,
294 ctx->state.ref_frame_ts, 0);
295 if (ref_buf_idx < 0)
296 return -EINVAL;
297
298 ref_vb2_buf = vq_cap->bufs[ref_buf_idx];
299 if (ref_vb2_buf->state == VB2_BUF_STATE_ERROR)
300 ret = -EINVAL;
301 ctx->state.ref_frame.buf =
302 vb2_plane_vaddr(ref_vb2_buf, 0);
303 } else {
304 ctx->state.ref_frame.buf = NULL;
305 }
306 }
307 p_dst = vb2_plane_vaddr(&dst_vb->vb2_buf, 0);
308 if (!p_src || !p_dst) {
309 v4l2_err(&dev->v4l2_dev,
310 "Acquiring kernel pointers to buffers failed\n");
311 return -EFAULT;
312 }
313
314 if (ctx->is_enc) {
315 struct vicodec_q_data *q_src;
316 int comp_sz_or_errcode;
317
318 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
319 state->info = q_src->info;
320 comp_sz_or_errcode = v4l2_fwht_encode(state, p_src, p_dst);
321 if (comp_sz_or_errcode < 0)
322 return comp_sz_or_errcode;
323 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, comp_sz_or_errcode);
324 } else {
325 struct vicodec_q_data *q_dst;
326 unsigned int comp_frame_size = ntohl(ctx->state.header.size);
327
328 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
329 if (comp_frame_size > ctx->comp_max_size)
330 return -EINVAL;
331 state->info = q_dst->info;
332 ret = v4l2_fwht_decode(state, p_src, p_dst);
333 if (ret < 0)
334 return ret;
335 if (!ctx->is_stateless)
336 copy_cap_to_ref(p_dst, ctx->state.info, &ctx->state);
337
338 vb2_set_plane_payload(&dst_vb->vb2_buf, 0, q_dst->sizeimage);
339 if (ntohl(ctx->state.header.flags) & FWHT_FL_I_FRAME)
340 dst_vb->flags |= V4L2_BUF_FLAG_KEYFRAME;
341 else
342 dst_vb->flags |= V4L2_BUF_FLAG_PFRAME;
343 }
344 return ret;
345 }
346
347 /*
348 * mem2mem callbacks
349 */
350 static enum vb2_buffer_state get_next_header(struct vicodec_ctx *ctx,
351 u8 **pp, u32 sz)
352 {
353 static const u8 magic[] = {
354 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
355 };
356 u8 *p = *pp;
357 u32 state;
358 u8 *header = (u8 *)&ctx->state.header;
359
360 state = VB2_BUF_STATE_DONE;
361
362 if (!ctx->header_size) {
363 state = VB2_BUF_STATE_ERROR;
364 for (; p < *pp + sz; p++) {
365 u32 copy;
366
367 p = memchr(p, magic[ctx->comp_magic_cnt],
368 *pp + sz - p);
369 if (!p) {
370 ctx->comp_magic_cnt = 0;
371 p = *pp + sz;
372 break;
373 }
374 copy = sizeof(magic) - ctx->comp_magic_cnt;
375 if (*pp + sz - p < copy)
376 copy = *pp + sz - p;
377
378 memcpy(header + ctx->comp_magic_cnt, p, copy);
379 ctx->comp_magic_cnt += copy;
380 if (!memcmp(header, magic, ctx->comp_magic_cnt)) {
381 p += copy;
382 state = VB2_BUF_STATE_DONE;
383 break;
384 }
385 ctx->comp_magic_cnt = 0;
386 }
387 if (ctx->comp_magic_cnt < sizeof(magic)) {
388 *pp = p;
389 return state;
390 }
391 ctx->header_size = sizeof(magic);
392 }
393
394 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
395 u32 copy = sizeof(struct fwht_cframe_hdr) - ctx->header_size;
396
397 if (*pp + sz - p < copy)
398 copy = *pp + sz - p;
399
400 memcpy(header + ctx->header_size, p, copy);
401 p += copy;
402 ctx->header_size += copy;
403 }
404 *pp = p;
405 return state;
406 }
407
408 /* device_run() - prepares and starts the device */
409 static void device_run(void *priv)
410 {
411 struct vicodec_ctx *ctx = priv;
412 struct vicodec_dev *dev = ctx->dev;
413 struct vb2_v4l2_buffer *src_buf, *dst_buf;
414 struct vicodec_q_data *q_src, *q_dst;
415 u32 state;
416 struct media_request *src_req;
417
418 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
419 dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
420 src_req = src_buf->vb2_buf.req_obj.req;
421
422 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
423 q_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
424
425 state = VB2_BUF_STATE_DONE;
426 if (device_process(ctx, src_buf, dst_buf))
427 state = VB2_BUF_STATE_ERROR;
428 else
429 dst_buf->sequence = q_dst->sequence++;
430 dst_buf->flags &= ~V4L2_BUF_FLAG_LAST;
431 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
432
433 spin_lock(ctx->lock);
434 if (!ctx->comp_has_next_frame && src_buf == ctx->last_src_buf) {
435 dst_buf->flags |= V4L2_BUF_FLAG_LAST;
436 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
437 ctx->is_draining = false;
438 ctx->has_stopped = true;
439 }
440 if (ctx->is_enc || ctx->is_stateless) {
441 src_buf->sequence = q_src->sequence++;
442 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
443 v4l2_m2m_buf_done(src_buf, state);
444 } else if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == ctx->cur_buf_offset) {
445 src_buf->sequence = q_src->sequence++;
446 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
447 v4l2_m2m_buf_done(src_buf, state);
448 ctx->cur_buf_offset = 0;
449 ctx->comp_has_next_frame = false;
450 }
451 v4l2_m2m_buf_done(dst_buf, state);
452
453 ctx->comp_size = 0;
454 ctx->header_size = 0;
455 ctx->comp_magic_cnt = 0;
456 ctx->comp_has_frame = false;
457 spin_unlock(ctx->lock);
458 if (ctx->is_stateless && src_req)
459 v4l2_ctrl_request_complete(src_req, &ctx->hdl);
460
461 if (ctx->is_enc)
462 v4l2_m2m_job_finish(dev->stateful_enc.m2m_dev, ctx->fh.m2m_ctx);
463 else if (ctx->is_stateless)
464 v4l2_m2m_job_finish(dev->stateless_dec.m2m_dev,
465 ctx->fh.m2m_ctx);
466 else
467 v4l2_m2m_job_finish(dev->stateful_dec.m2m_dev, ctx->fh.m2m_ctx);
468 }
469
470 static void job_remove_src_buf(struct vicodec_ctx *ctx, u32 state)
471 {
472 struct vb2_v4l2_buffer *src_buf;
473 struct vicodec_q_data *q_src;
474
475 q_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
476 spin_lock(ctx->lock);
477 src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
478 src_buf->sequence = q_src->sequence++;
479 v4l2_m2m_buf_done(src_buf, state);
480 ctx->cur_buf_offset = 0;
481 spin_unlock(ctx->lock);
482 }
483
484 static const struct v4l2_fwht_pixfmt_info *
485 info_from_header(const struct fwht_cframe_hdr *p_hdr)
486 {
487 unsigned int flags = ntohl(p_hdr->flags);
488 unsigned int width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
489 unsigned int height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
490 unsigned int components_num = 3;
491 unsigned int pixenc = 0;
492 unsigned int version = ntohl(p_hdr->version);
493
494 if (version >= 2) {
495 components_num = 1 + ((flags & FWHT_FL_COMPONENTS_NUM_MSK) >>
496 FWHT_FL_COMPONENTS_NUM_OFFSET);
497 pixenc = (flags & FWHT_FL_PIXENC_MSK);
498 }
499 return v4l2_fwht_find_nth_fmt(width_div, height_div,
500 components_num, pixenc, 0);
501 }
502
503 static bool is_header_valid(const struct fwht_cframe_hdr *p_hdr)
504 {
505 const struct v4l2_fwht_pixfmt_info *info;
506 unsigned int w = ntohl(p_hdr->width);
507 unsigned int h = ntohl(p_hdr->height);
508 unsigned int version = ntohl(p_hdr->version);
509 unsigned int flags = ntohl(p_hdr->flags);
510
511 if (w < MIN_WIDTH || w > MAX_WIDTH || h < MIN_HEIGHT || h > MAX_HEIGHT)
512 return false;
513
514 if (!validate_by_version(flags, version))
515 return false;
516
517 info = info_from_header(p_hdr);
518 if (!info)
519 return false;
520 return true;
521 }
522
523 static void update_capture_data_from_header(struct vicodec_ctx *ctx)
524 {
525 struct vicodec_q_data *q_dst = get_q_data(ctx,
526 V4L2_BUF_TYPE_VIDEO_CAPTURE);
527 const struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
528 const struct v4l2_fwht_pixfmt_info *info = info_from_header(p_hdr);
529 unsigned int flags = ntohl(p_hdr->flags);
530 unsigned int hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
531 unsigned int hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
532
533 /*
534 * This function should not be used by a stateless codec since
535 * it changes values in q_data that are not request specific
536 */
537 WARN_ON(ctx->is_stateless);
538
539 q_dst->info = info;
540 q_dst->visible_width = ntohl(p_hdr->width);
541 q_dst->visible_height = ntohl(p_hdr->height);
542 q_dst->coded_width = vic_round_dim(q_dst->visible_width, hdr_width_div);
543 q_dst->coded_height = vic_round_dim(q_dst->visible_height,
544 hdr_height_div);
545
546 q_dst->sizeimage = q_dst->coded_width * q_dst->coded_height *
547 q_dst->info->sizeimage_mult / q_dst->info->sizeimage_div;
548 ctx->state.colorspace = ntohl(p_hdr->colorspace);
549
550 ctx->state.xfer_func = ntohl(p_hdr->xfer_func);
551 ctx->state.ycbcr_enc = ntohl(p_hdr->ycbcr_enc);
552 ctx->state.quantization = ntohl(p_hdr->quantization);
553 }
554
555 static void set_last_buffer(struct vb2_v4l2_buffer *dst_buf,
556 const struct vb2_v4l2_buffer *src_buf,
557 struct vicodec_ctx *ctx)
558 {
559 struct vicodec_q_data *q_dst = get_q_data(ctx,
560 V4L2_BUF_TYPE_VIDEO_CAPTURE);
561
562 vb2_set_plane_payload(&dst_buf->vb2_buf, 0, 0);
563 dst_buf->sequence = q_dst->sequence++;
564
565 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, !ctx->is_enc);
566 dst_buf->flags |= V4L2_BUF_FLAG_LAST;
567 v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
568 }
569
570 static int job_ready(void *priv)
571 {
572 static const u8 magic[] = {
573 0x4f, 0x4f, 0x4f, 0x4f, 0xff, 0xff, 0xff, 0xff
574 };
575 struct vicodec_ctx *ctx = priv;
576 struct vb2_v4l2_buffer *src_buf;
577 u8 *p_src;
578 u8 *p;
579 u32 sz;
580 u32 state;
581 struct vicodec_q_data *q_dst = get_q_data(ctx,
582 V4L2_BUF_TYPE_VIDEO_CAPTURE);
583 unsigned int flags;
584 unsigned int hdr_width_div;
585 unsigned int hdr_height_div;
586 unsigned int max_to_copy;
587 unsigned int comp_frame_size;
588
589 if (ctx->has_stopped)
590 return 0;
591 if (ctx->source_changed)
592 return 0;
593 if (ctx->is_stateless || ctx->is_enc || ctx->comp_has_frame)
594 return 1;
595
596 restart:
597 ctx->comp_has_next_frame = false;
598 src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
599 if (!src_buf)
600 return 0;
601 p_src = vb2_plane_vaddr(&src_buf->vb2_buf, 0);
602 sz = vb2_get_plane_payload(&src_buf->vb2_buf, 0);
603 p = p_src + ctx->cur_buf_offset;
604
605 state = VB2_BUF_STATE_DONE;
606
607 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
608 state = get_next_header(ctx, &p, p_src + sz - p);
609 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
610 if (ctx->is_draining && src_buf == ctx->last_src_buf)
611 return 1;
612 job_remove_src_buf(ctx, state);
613 goto restart;
614 }
615 }
616
617 comp_frame_size = ntohl(ctx->state.header.size);
618
619 /*
620 * The current scanned frame might be the first frame of a new
621 * resolution so its size might be larger than ctx->comp_max_size.
622 * In that case it is copied up to the current buffer capacity and
623 * the copy will continue after allocating new large enough buffer
624 * when restreaming
625 */
626 max_to_copy = min(comp_frame_size, ctx->comp_max_size);
627
628 if (ctx->comp_size < max_to_copy) {
629 u32 copy = max_to_copy - ctx->comp_size;
630
631 if (copy > p_src + sz - p)
632 copy = p_src + sz - p;
633
634 memcpy(ctx->state.compressed_frame + ctx->comp_size,
635 p, copy);
636 p += copy;
637 ctx->comp_size += copy;
638 if (ctx->comp_size < max_to_copy) {
639 if (ctx->is_draining && src_buf == ctx->last_src_buf)
640 return 1;
641 job_remove_src_buf(ctx, state);
642 goto restart;
643 }
644 }
645 ctx->cur_buf_offset = p - p_src;
646 if (ctx->comp_size == comp_frame_size)
647 ctx->comp_has_frame = true;
648 ctx->comp_has_next_frame = false;
649 if (ctx->comp_has_frame && sz - ctx->cur_buf_offset >=
650 sizeof(struct fwht_cframe_hdr)) {
651 struct fwht_cframe_hdr *p_hdr = (struct fwht_cframe_hdr *)p;
652 u32 frame_size = ntohl(p_hdr->size);
653 u32 remaining = sz - ctx->cur_buf_offset - sizeof(*p_hdr);
654
655 if (!memcmp(p, magic, sizeof(magic)))
656 ctx->comp_has_next_frame = remaining >= frame_size;
657 }
658 /*
659 * if the header is invalid the device_run will just drop the frame
660 * with an error
661 */
662 if (!is_header_valid(&ctx->state.header) && ctx->comp_has_frame)
663 return 1;
664 flags = ntohl(ctx->state.header.flags);
665 hdr_width_div = (flags & FWHT_FL_CHROMA_FULL_WIDTH) ? 1 : 2;
666 hdr_height_div = (flags & FWHT_FL_CHROMA_FULL_HEIGHT) ? 1 : 2;
667
668 if (ntohl(ctx->state.header.width) != q_dst->visible_width ||
669 ntohl(ctx->state.header.height) != q_dst->visible_height ||
670 !q_dst->info ||
671 hdr_width_div != q_dst->info->width_div ||
672 hdr_height_div != q_dst->info->height_div) {
673 static const struct v4l2_event rs_event = {
674 .type = V4L2_EVENT_SOURCE_CHANGE,
675 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
676 };
677
678 struct vb2_v4l2_buffer *dst_buf =
679 v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
680
681 update_capture_data_from_header(ctx);
682 v4l2_event_queue_fh(&ctx->fh, &rs_event);
683 set_last_buffer(dst_buf, src_buf, ctx);
684 ctx->source_changed = true;
685 return 0;
686 }
687 return 1;
688 }
689
690 /*
691 * video ioctls
692 */
693
694 static const struct v4l2_fwht_pixfmt_info *find_fmt(u32 fmt)
695 {
696 const struct v4l2_fwht_pixfmt_info *info =
697 v4l2_fwht_find_pixfmt(fmt);
698
699 if (!info)
700 info = v4l2_fwht_get_pixfmt(0);
701 return info;
702 }
703
704 static int vidioc_querycap(struct file *file, void *priv,
705 struct v4l2_capability *cap)
706 {
707 strscpy(cap->driver, VICODEC_NAME, sizeof(cap->driver));
708 strscpy(cap->card, VICODEC_NAME, sizeof(cap->card));
709 snprintf(cap->bus_info, sizeof(cap->bus_info),
710 "platform:%s", VICODEC_NAME);
711 return 0;
712 }
713
714 static int enum_fmt(struct v4l2_fmtdesc *f, struct vicodec_ctx *ctx,
715 bool is_out)
716 {
717 bool is_uncomp = (ctx->is_enc && is_out) || (!ctx->is_enc && !is_out);
718
719 if (V4L2_TYPE_IS_MULTIPLANAR(f->type) && !multiplanar)
720 return -EINVAL;
721 if (!V4L2_TYPE_IS_MULTIPLANAR(f->type) && multiplanar)
722 return -EINVAL;
723
724 if (is_uncomp) {
725 const struct v4l2_fwht_pixfmt_info *info =
726 get_q_data(ctx, f->type)->info;
727
728 if (ctx->is_enc ||
729 !vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q))
730 info = v4l2_fwht_get_pixfmt(f->index);
731 else
732 info = v4l2_fwht_find_nth_fmt(info->width_div,
733 info->height_div,
734 info->components_num,
735 info->pixenc,
736 f->index);
737 if (!info)
738 return -EINVAL;
739 f->pixelformat = info->id;
740 } else {
741 if (f->index)
742 return -EINVAL;
743 f->pixelformat = ctx->is_stateless ?
744 V4L2_PIX_FMT_FWHT_STATELESS : V4L2_PIX_FMT_FWHT;
745 if (!ctx->is_enc && !ctx->is_stateless)
746 f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION |
747 V4L2_FMT_FLAG_CONTINUOUS_BYTESTREAM;
748 }
749 return 0;
750 }
751
752 static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
753 struct v4l2_fmtdesc *f)
754 {
755 struct vicodec_ctx *ctx = file2ctx(file);
756
757 return enum_fmt(f, ctx, false);
758 }
759
760 static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
761 struct v4l2_fmtdesc *f)
762 {
763 struct vicodec_ctx *ctx = file2ctx(file);
764
765 return enum_fmt(f, ctx, true);
766 }
767
768 static int vidioc_g_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
769 {
770 struct vb2_queue *vq;
771 struct vicodec_q_data *q_data;
772 struct v4l2_pix_format_mplane *pix_mp;
773 struct v4l2_pix_format *pix;
774 const struct v4l2_fwht_pixfmt_info *info;
775
776 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
777 if (!vq)
778 return -EINVAL;
779
780 q_data = get_q_data(ctx, f->type);
781 info = q_data->info;
782
783 switch (f->type) {
784 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
785 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
786 if (multiplanar)
787 return -EINVAL;
788 pix = &f->fmt.pix;
789 pix->width = q_data->coded_width;
790 pix->height = q_data->coded_height;
791 pix->field = V4L2_FIELD_NONE;
792 pix->pixelformat = info->id;
793 pix->bytesperline = q_data->coded_width *
794 info->bytesperline_mult;
795 pix->sizeimage = q_data->sizeimage;
796 pix->colorspace = ctx->state.colorspace;
797 pix->xfer_func = ctx->state.xfer_func;
798 pix->ycbcr_enc = ctx->state.ycbcr_enc;
799 pix->quantization = ctx->state.quantization;
800 break;
801
802 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
803 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
804 if (!multiplanar)
805 return -EINVAL;
806 pix_mp = &f->fmt.pix_mp;
807 pix_mp->width = q_data->coded_width;
808 pix_mp->height = q_data->coded_height;
809 pix_mp->field = V4L2_FIELD_NONE;
810 pix_mp->pixelformat = info->id;
811 pix_mp->num_planes = 1;
812 pix_mp->plane_fmt[0].bytesperline =
813 q_data->coded_width * info->bytesperline_mult;
814 pix_mp->plane_fmt[0].sizeimage = q_data->sizeimage;
815 pix_mp->colorspace = ctx->state.colorspace;
816 pix_mp->xfer_func = ctx->state.xfer_func;
817 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
818 pix_mp->quantization = ctx->state.quantization;
819 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
820 memset(pix_mp->plane_fmt[0].reserved, 0,
821 sizeof(pix_mp->plane_fmt[0].reserved));
822 break;
823 default:
824 return -EINVAL;
825 }
826 return 0;
827 }
828
829 static int vidioc_g_fmt_vid_out(struct file *file, void *priv,
830 struct v4l2_format *f)
831 {
832 return vidioc_g_fmt(file2ctx(file), f);
833 }
834
835 static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
836 struct v4l2_format *f)
837 {
838 return vidioc_g_fmt(file2ctx(file), f);
839 }
840
841 static int vidioc_try_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
842 {
843 struct v4l2_pix_format_mplane *pix_mp;
844 struct v4l2_pix_format *pix;
845 struct v4l2_plane_pix_format *plane;
846 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
847 &pixfmt_stateless_fwht : &pixfmt_fwht;
848
849 switch (f->type) {
850 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
851 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
852 pix = &f->fmt.pix;
853 if (pix->pixelformat != V4L2_PIX_FMT_FWHT &&
854 pix->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
855 info = find_fmt(pix->pixelformat);
856
857 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH);
858 pix->width = vic_round_dim(pix->width, info->width_div);
859
860 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT);
861 pix->height = vic_round_dim(pix->height, info->height_div);
862
863 pix->field = V4L2_FIELD_NONE;
864 pix->bytesperline =
865 pix->width * info->bytesperline_mult;
866 pix->sizeimage = pix->width * pix->height *
867 info->sizeimage_mult / info->sizeimage_div;
868 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
869 pix->sizeimage += sizeof(struct fwht_cframe_hdr);
870 break;
871 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
872 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
873 pix_mp = &f->fmt.pix_mp;
874 plane = pix_mp->plane_fmt;
875 if (pix_mp->pixelformat != V4L2_PIX_FMT_FWHT &&
876 pix_mp->pixelformat != V4L2_PIX_FMT_FWHT_STATELESS)
877 info = find_fmt(pix_mp->pixelformat);
878 pix_mp->num_planes = 1;
879
880 pix_mp->width = clamp(pix_mp->width, MIN_WIDTH, MAX_WIDTH);
881 pix_mp->width = vic_round_dim(pix_mp->width, info->width_div);
882
883 pix_mp->height = clamp(pix_mp->height, MIN_HEIGHT, MAX_HEIGHT);
884 pix_mp->height = vic_round_dim(pix_mp->height,
885 info->height_div);
886
887 pix_mp->field = V4L2_FIELD_NONE;
888 plane->bytesperline =
889 pix_mp->width * info->bytesperline_mult;
890 plane->sizeimage = pix_mp->width * pix_mp->height *
891 info->sizeimage_mult / info->sizeimage_div;
892 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
893 plane->sizeimage += sizeof(struct fwht_cframe_hdr);
894 memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
895 memset(plane->reserved, 0, sizeof(plane->reserved));
896 break;
897 default:
898 return -EINVAL;
899 }
900
901 return 0;
902 }
903
904 static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
905 struct v4l2_format *f)
906 {
907 struct vicodec_ctx *ctx = file2ctx(file);
908 struct v4l2_pix_format_mplane *pix_mp;
909 struct v4l2_pix_format *pix;
910
911 switch (f->type) {
912 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
913 if (multiplanar)
914 return -EINVAL;
915 pix = &f->fmt.pix;
916 pix->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
917 find_fmt(f->fmt.pix.pixelformat)->id;
918 pix->colorspace = ctx->state.colorspace;
919 pix->xfer_func = ctx->state.xfer_func;
920 pix->ycbcr_enc = ctx->state.ycbcr_enc;
921 pix->quantization = ctx->state.quantization;
922 break;
923 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
924 if (!multiplanar)
925 return -EINVAL;
926 pix_mp = &f->fmt.pix_mp;
927 pix_mp->pixelformat = ctx->is_enc ? V4L2_PIX_FMT_FWHT :
928 find_fmt(pix_mp->pixelformat)->id;
929 pix_mp->colorspace = ctx->state.colorspace;
930 pix_mp->xfer_func = ctx->state.xfer_func;
931 pix_mp->ycbcr_enc = ctx->state.ycbcr_enc;
932 pix_mp->quantization = ctx->state.quantization;
933 break;
934 default:
935 return -EINVAL;
936 }
937
938 return vidioc_try_fmt(ctx, f);
939 }
940
941 static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
942 struct v4l2_format *f)
943 {
944 struct vicodec_ctx *ctx = file2ctx(file);
945 struct v4l2_pix_format_mplane *pix_mp;
946 struct v4l2_pix_format *pix;
947
948 switch (f->type) {
949 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
950 if (multiplanar)
951 return -EINVAL;
952 pix = &f->fmt.pix;
953 if (ctx->is_enc)
954 pix->pixelformat = find_fmt(pix->pixelformat)->id;
955 else if (ctx->is_stateless)
956 pix->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
957 else
958 pix->pixelformat = V4L2_PIX_FMT_FWHT;
959 if (!pix->colorspace)
960 pix->colorspace = V4L2_COLORSPACE_REC709;
961 break;
962 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
963 if (!multiplanar)
964 return -EINVAL;
965 pix_mp = &f->fmt.pix_mp;
966 if (ctx->is_enc)
967 pix_mp->pixelformat = find_fmt(pix_mp->pixelformat)->id;
968 else if (ctx->is_stateless)
969 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT_STATELESS;
970 else
971 pix_mp->pixelformat = V4L2_PIX_FMT_FWHT;
972 if (!pix_mp->colorspace)
973 pix_mp->colorspace = V4L2_COLORSPACE_REC709;
974 break;
975 default:
976 return -EINVAL;
977 }
978
979 return vidioc_try_fmt(ctx, f);
980 }
981
982 static int vidioc_s_fmt(struct vicodec_ctx *ctx, struct v4l2_format *f)
983 {
984 struct vicodec_q_data *q_data;
985 struct vb2_queue *vq;
986 bool fmt_changed = true;
987 struct v4l2_pix_format_mplane *pix_mp;
988 struct v4l2_pix_format *pix;
989
990 vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
991 if (!vq)
992 return -EINVAL;
993
994 q_data = get_q_data(ctx, f->type);
995 if (!q_data)
996 return -EINVAL;
997
998 switch (f->type) {
999 case V4L2_BUF_TYPE_VIDEO_CAPTURE:
1000 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1001 pix = &f->fmt.pix;
1002 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
1003 fmt_changed =
1004 !q_data->info ||
1005 q_data->info->id != pix->pixelformat ||
1006 q_data->coded_width != pix->width ||
1007 q_data->coded_height != pix->height;
1008
1009 if (vb2_is_busy(vq) && fmt_changed)
1010 return -EBUSY;
1011
1012 if (pix->pixelformat == V4L2_PIX_FMT_FWHT)
1013 q_data->info = &pixfmt_fwht;
1014 else if (pix->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
1015 q_data->info = &pixfmt_stateless_fwht;
1016 else
1017 q_data->info = find_fmt(pix->pixelformat);
1018 q_data->coded_width = pix->width;
1019 q_data->coded_height = pix->height;
1020 q_data->sizeimage = pix->sizeimage;
1021 break;
1022 case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
1023 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1024 pix_mp = &f->fmt.pix_mp;
1025 if (ctx->is_enc && V4L2_TYPE_IS_OUTPUT(f->type))
1026 fmt_changed =
1027 !q_data->info ||
1028 q_data->info->id != pix_mp->pixelformat ||
1029 q_data->coded_width != pix_mp->width ||
1030 q_data->coded_height != pix_mp->height;
1031
1032 if (vb2_is_busy(vq) && fmt_changed)
1033 return -EBUSY;
1034
1035 if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT)
1036 q_data->info = &pixfmt_fwht;
1037 else if (pix_mp->pixelformat == V4L2_PIX_FMT_FWHT_STATELESS)
1038 q_data->info = &pixfmt_stateless_fwht;
1039 else
1040 q_data->info = find_fmt(pix_mp->pixelformat);
1041 q_data->coded_width = pix_mp->width;
1042 q_data->coded_height = pix_mp->height;
1043 q_data->sizeimage = pix_mp->plane_fmt[0].sizeimage;
1044 break;
1045 default:
1046 return -EINVAL;
1047 }
1048
1049 dprintk(ctx->dev,
1050 "Setting format for type %d, coded wxh: %dx%d, fourcc: 0x%08x\n",
1051 f->type, q_data->coded_width, q_data->coded_height,
1052 q_data->info->id);
1053
1054 return 0;
1055 }
1056
1057 static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
1058 struct v4l2_format *f)
1059 {
1060 int ret;
1061
1062 ret = vidioc_try_fmt_vid_cap(file, priv, f);
1063 if (ret)
1064 return ret;
1065
1066 return vidioc_s_fmt(file2ctx(file), f);
1067 }
1068
1069 static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
1070 struct v4l2_format *f)
1071 {
1072 struct vicodec_ctx *ctx = file2ctx(file);
1073 struct vicodec_q_data *q_data;
1074 struct vicodec_q_data *q_data_cap;
1075 struct v4l2_pix_format *pix;
1076 struct v4l2_pix_format_mplane *pix_mp;
1077 u32 coded_w = 0, coded_h = 0;
1078 unsigned int size = 0;
1079 int ret;
1080
1081 q_data = get_q_data(ctx, f->type);
1082 q_data_cap = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
1083
1084 ret = vidioc_try_fmt_vid_out(file, priv, f);
1085 if (ret)
1086 return ret;
1087
1088 if (ctx->is_enc) {
1089 struct vb2_queue *vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
1090 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1091 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1092 const struct v4l2_fwht_pixfmt_info *info = ctx->is_stateless ?
1093 &pixfmt_stateless_fwht : &pixfmt_fwht;
1094
1095 if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1096 coded_w = f->fmt.pix.width;
1097 coded_h = f->fmt.pix.height;
1098 } else {
1099 coded_w = f->fmt.pix_mp.width;
1100 coded_h = f->fmt.pix_mp.height;
1101 }
1102 if (vb2_is_busy(vq) && (coded_w != q_data->coded_width ||
1103 coded_h != q_data->coded_height))
1104 return -EBUSY;
1105 size = coded_w * coded_h *
1106 info->sizeimage_mult / info->sizeimage_div;
1107 if (!ctx->is_stateless)
1108 size += sizeof(struct fwht_cframe_hdr);
1109
1110 if (vb2_is_busy(vq_cap) && size > q_data_cap->sizeimage)
1111 return -EBUSY;
1112 }
1113
1114 ret = vidioc_s_fmt(file2ctx(file), f);
1115 if (!ret) {
1116 if (ctx->is_enc) {
1117 q_data->visible_width = coded_w;
1118 q_data->visible_height = coded_h;
1119 q_data_cap->coded_width = coded_w;
1120 q_data_cap->coded_height = coded_h;
1121 q_data_cap->sizeimage = size;
1122 }
1123
1124 switch (f->type) {
1125 case V4L2_BUF_TYPE_VIDEO_OUTPUT:
1126 pix = &f->fmt.pix;
1127 ctx->state.colorspace = pix->colorspace;
1128 ctx->state.xfer_func = pix->xfer_func;
1129 ctx->state.ycbcr_enc = pix->ycbcr_enc;
1130 ctx->state.quantization = pix->quantization;
1131 break;
1132 case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
1133 pix_mp = &f->fmt.pix_mp;
1134 ctx->state.colorspace = pix_mp->colorspace;
1135 ctx->state.xfer_func = pix_mp->xfer_func;
1136 ctx->state.ycbcr_enc = pix_mp->ycbcr_enc;
1137 ctx->state.quantization = pix_mp->quantization;
1138 break;
1139 default:
1140 break;
1141 }
1142 }
1143 return ret;
1144 }
1145
1146 static int vidioc_g_selection(struct file *file, void *priv,
1147 struct v4l2_selection *s)
1148 {
1149 struct vicodec_ctx *ctx = file2ctx(file);
1150 struct vicodec_q_data *q_data;
1151
1152 q_data = get_q_data(ctx, s->type);
1153 if (!q_data)
1154 return -EINVAL;
1155 /*
1156 * encoder supports only cropping on the OUTPUT buffer
1157 * decoder supports only composing on the CAPTURE buffer
1158 */
1159 if (ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
1160 switch (s->target) {
1161 case V4L2_SEL_TGT_CROP:
1162 s->r.left = 0;
1163 s->r.top = 0;
1164 s->r.width = q_data->visible_width;
1165 s->r.height = q_data->visible_height;
1166 return 0;
1167 case V4L2_SEL_TGT_CROP_DEFAULT:
1168 case V4L2_SEL_TGT_CROP_BOUNDS:
1169 s->r.left = 0;
1170 s->r.top = 0;
1171 s->r.width = q_data->coded_width;
1172 s->r.height = q_data->coded_height;
1173 return 0;
1174 }
1175 } else if (!ctx->is_enc && s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
1176 switch (s->target) {
1177 case V4L2_SEL_TGT_COMPOSE:
1178 s->r.left = 0;
1179 s->r.top = 0;
1180 s->r.width = q_data->visible_width;
1181 s->r.height = q_data->visible_height;
1182 return 0;
1183 case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1184 case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1185 s->r.left = 0;
1186 s->r.top = 0;
1187 s->r.width = q_data->coded_width;
1188 s->r.height = q_data->coded_height;
1189 return 0;
1190 }
1191 }
1192 return -EINVAL;
1193 }
1194
1195 static int vidioc_s_selection(struct file *file, void *priv,
1196 struct v4l2_selection *s)
1197 {
1198 struct vicodec_ctx *ctx = file2ctx(file);
1199 struct vicodec_q_data *q_data;
1200
1201 if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
1202 return -EINVAL;
1203
1204 q_data = get_q_data(ctx, s->type);
1205 if (!q_data)
1206 return -EINVAL;
1207
1208 if (!ctx->is_enc || s->target != V4L2_SEL_TGT_CROP)
1209 return -EINVAL;
1210
1211 s->r.left = 0;
1212 s->r.top = 0;
1213 q_data->visible_width = clamp(s->r.width, MIN_WIDTH,
1214 q_data->coded_width);
1215 s->r.width = q_data->visible_width;
1216 q_data->visible_height = clamp(s->r.height, MIN_HEIGHT,
1217 q_data->coded_height);
1218 s->r.height = q_data->visible_height;
1219 return 0;
1220 }
1221
1222 static int vicodec_mark_last_buf(struct vicodec_ctx *ctx)
1223 {
1224 struct vb2_v4l2_buffer *next_dst_buf;
1225 int ret = 0;
1226
1227 spin_lock(ctx->lock);
1228 if (ctx->is_draining) {
1229 ret = -EBUSY;
1230 goto unlock;
1231 }
1232 if (ctx->has_stopped)
1233 goto unlock;
1234
1235 ctx->last_src_buf = v4l2_m2m_last_src_buf(ctx->fh.m2m_ctx);
1236 ctx->is_draining = true;
1237 if (ctx->last_src_buf)
1238 goto unlock;
1239
1240 next_dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1241 if (!next_dst_buf) {
1242 ctx->next_is_last = true;
1243 goto unlock;
1244 }
1245
1246 next_dst_buf->flags |= V4L2_BUF_FLAG_LAST;
1247 vb2_buffer_done(&next_dst_buf->vb2_buf, VB2_BUF_STATE_DONE);
1248 ctx->is_draining = false;
1249 ctx->has_stopped = true;
1250 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1251
1252 unlock:
1253 spin_unlock(ctx->lock);
1254 return ret;
1255 }
1256
1257 static int vicodec_encoder_cmd(struct file *file, void *fh,
1258 struct v4l2_encoder_cmd *ec)
1259 {
1260 struct vicodec_ctx *ctx = file2ctx(file);
1261 int ret;
1262
1263 ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, ec);
1264 if (ret < 0)
1265 return ret;
1266
1267 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
1268 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
1269 return 0;
1270
1271 if (ec->cmd == V4L2_ENC_CMD_STOP)
1272 return vicodec_mark_last_buf(ctx);
1273 ret = 0;
1274 spin_lock(ctx->lock);
1275 if (ctx->is_draining) {
1276 ret = -EBUSY;
1277 } else if (ctx->has_stopped) {
1278 ctx->has_stopped = false;
1279 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
1280 }
1281 spin_unlock(ctx->lock);
1282 return ret;
1283 }
1284
1285 static int vicodec_decoder_cmd(struct file *file, void *fh,
1286 struct v4l2_decoder_cmd *dc)
1287 {
1288 struct vicodec_ctx *ctx = file2ctx(file);
1289 int ret;
1290
1291 ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, dc);
1292 if (ret < 0)
1293 return ret;
1294
1295 if (!vb2_is_streaming(&ctx->fh.m2m_ctx->cap_q_ctx.q) ||
1296 !vb2_is_streaming(&ctx->fh.m2m_ctx->out_q_ctx.q))
1297 return 0;
1298
1299 if (dc->cmd == V4L2_DEC_CMD_STOP)
1300 return vicodec_mark_last_buf(ctx);
1301 ret = 0;
1302 spin_lock(ctx->lock);
1303 if (ctx->is_draining) {
1304 ret = -EBUSY;
1305 } else if (ctx->has_stopped) {
1306 ctx->has_stopped = false;
1307 vb2_clear_last_buffer_dequeued(&ctx->fh.m2m_ctx->cap_q_ctx.q);
1308 }
1309 spin_unlock(ctx->lock);
1310 return ret;
1311 }
1312
1313 static int vicodec_enum_framesizes(struct file *file, void *fh,
1314 struct v4l2_frmsizeenum *fsize)
1315 {
1316 switch (fsize->pixel_format) {
1317 case V4L2_PIX_FMT_FWHT_STATELESS:
1318 break;
1319 case V4L2_PIX_FMT_FWHT:
1320 break;
1321 default:
1322 if (find_fmt(fsize->pixel_format)->id == fsize->pixel_format)
1323 break;
1324 return -EINVAL;
1325 }
1326
1327 if (fsize->index)
1328 return -EINVAL;
1329
1330 fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
1331
1332 fsize->stepwise.min_width = MIN_WIDTH;
1333 fsize->stepwise.max_width = MAX_WIDTH;
1334 fsize->stepwise.step_width = 8;
1335 fsize->stepwise.min_height = MIN_HEIGHT;
1336 fsize->stepwise.max_height = MAX_HEIGHT;
1337 fsize->stepwise.step_height = 8;
1338
1339 return 0;
1340 }
1341
1342 static int vicodec_subscribe_event(struct v4l2_fh *fh,
1343 const struct v4l2_event_subscription *sub)
1344 {
1345 struct vicodec_ctx *ctx = container_of(fh, struct vicodec_ctx, fh);
1346
1347 switch (sub->type) {
1348 case V4L2_EVENT_SOURCE_CHANGE:
1349 if (ctx->is_enc)
1350 return -EINVAL;
1351 /* fall through */
1352 case V4L2_EVENT_EOS:
1353 if (ctx->is_stateless)
1354 return -EINVAL;
1355 return v4l2_event_subscribe(fh, sub, 0, NULL);
1356 default:
1357 return v4l2_ctrl_subscribe_event(fh, sub);
1358 }
1359 }
1360
1361 static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
1362 .vidioc_querycap = vidioc_querycap,
1363
1364 .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
1365 .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
1366 .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
1367 .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
1368
1369 .vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_vid_cap,
1370 .vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_vid_cap,
1371 .vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_vid_cap,
1372
1373 .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
1374 .vidioc_g_fmt_vid_out = vidioc_g_fmt_vid_out,
1375 .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
1376 .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
1377
1378 .vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_vid_out,
1379 .vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_vid_out,
1380 .vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_vid_out,
1381
1382 .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
1383 .vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
1384 .vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
1385 .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
1386 .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
1387 .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
1388 .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
1389
1390 .vidioc_streamon = v4l2_m2m_ioctl_streamon,
1391 .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
1392
1393 .vidioc_g_selection = vidioc_g_selection,
1394 .vidioc_s_selection = vidioc_s_selection,
1395
1396 .vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
1397 .vidioc_encoder_cmd = vicodec_encoder_cmd,
1398 .vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
1399 .vidioc_decoder_cmd = vicodec_decoder_cmd,
1400 .vidioc_enum_framesizes = vicodec_enum_framesizes,
1401
1402 .vidioc_subscribe_event = vicodec_subscribe_event,
1403 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1404 };
1405
1406
1407 /*
1408 * Queue operations
1409 */
1410
1411 static int vicodec_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
1412 unsigned int *nplanes, unsigned int sizes[],
1413 struct device *alloc_devs[])
1414 {
1415 struct vicodec_ctx *ctx = vb2_get_drv_priv(vq);
1416 struct vicodec_q_data *q_data = get_q_data(ctx, vq->type);
1417 unsigned int size = q_data->sizeimage;
1418
1419 if (*nplanes)
1420 return sizes[0] < size ? -EINVAL : 0;
1421
1422 *nplanes = 1;
1423 sizes[0] = size;
1424 q_data->vb2_sizeimage = size;
1425 return 0;
1426 }
1427
1428 static int vicodec_buf_out_validate(struct vb2_buffer *vb)
1429 {
1430 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1431
1432 vbuf->field = V4L2_FIELD_NONE;
1433 return 0;
1434 }
1435
1436 static int vicodec_buf_prepare(struct vb2_buffer *vb)
1437 {
1438 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1439 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1440 struct vicodec_q_data *q_data;
1441
1442 dprintk(ctx->dev, "type: %d\n", vb->vb2_queue->type);
1443
1444 q_data = get_q_data(ctx, vb->vb2_queue->type);
1445 if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1446 if (vbuf->field == V4L2_FIELD_ANY)
1447 vbuf->field = V4L2_FIELD_NONE;
1448 if (vbuf->field != V4L2_FIELD_NONE) {
1449 dprintk(ctx->dev, "%s field isn't supported\n",
1450 __func__);
1451 return -EINVAL;
1452 }
1453 }
1454
1455 if (vb2_plane_size(vb, 0) < q_data->vb2_sizeimage) {
1456 dprintk(ctx->dev,
1457 "%s data will not fit into plane (%lu < %lu)\n",
1458 __func__, vb2_plane_size(vb, 0),
1459 (long)q_data->vb2_sizeimage);
1460 return -EINVAL;
1461 }
1462
1463 return 0;
1464 }
1465
1466 static void vicodec_buf_queue(struct vb2_buffer *vb)
1467 {
1468 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
1469 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1470 unsigned int sz = vb2_get_plane_payload(&vbuf->vb2_buf, 0);
1471 u8 *p_src = vb2_plane_vaddr(&vbuf->vb2_buf, 0);
1472 u8 *p = p_src;
1473 struct vb2_queue *vq_out = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1474 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1475 struct vb2_queue *vq_cap = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
1476 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1477 bool header_valid = false;
1478 static const struct v4l2_event rs_event = {
1479 .type = V4L2_EVENT_SOURCE_CHANGE,
1480 .u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
1481 };
1482
1483 if (vb2_is_streaming(vq_cap)) {
1484 if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type) &&
1485 ctx->next_is_last) {
1486 unsigned int i;
1487
1488 for (i = 0; i < vb->num_planes; i++)
1489 vb->planes[i].bytesused = 0;
1490 vbuf->flags = V4L2_BUF_FLAG_LAST;
1491 vbuf->field = V4L2_FIELD_NONE;
1492 vbuf->sequence = get_q_data(ctx, vb->vb2_queue->type)->sequence++;
1493 vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
1494 ctx->is_draining = false;
1495 ctx->has_stopped = true;
1496 ctx->next_is_last = false;
1497 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1498 return;
1499 }
1500 }
1501
1502 /* buf_queue handles only the first source change event */
1503 if (ctx->first_source_change_sent) {
1504 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1505 return;
1506 }
1507
1508 /*
1509 * if both queues are streaming, the source change event is
1510 * handled in job_ready
1511 */
1512 if (vb2_is_streaming(vq_cap) && vb2_is_streaming(vq_out)) {
1513 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1514 return;
1515 }
1516
1517 /*
1518 * source change event is relevant only for the stateful decoder
1519 * in the compressed stream
1520 */
1521 if (ctx->is_stateless || ctx->is_enc ||
1522 !V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
1523 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1524 return;
1525 }
1526
1527 do {
1528 enum vb2_buffer_state state =
1529 get_next_header(ctx, &p, p_src + sz - p);
1530
1531 if (ctx->header_size < sizeof(struct fwht_cframe_hdr)) {
1532 v4l2_m2m_buf_done(vbuf, state);
1533 return;
1534 }
1535 header_valid = is_header_valid(&ctx->state.header);
1536 /*
1537 * p points right after the end of the header in the
1538 * buffer. If the header is invalid we set p to point
1539 * to the next byte after the start of the header
1540 */
1541 if (!header_valid) {
1542 p = p - sizeof(struct fwht_cframe_hdr) + 1;
1543 if (p < p_src)
1544 p = p_src;
1545 ctx->header_size = 0;
1546 ctx->comp_magic_cnt = 0;
1547 }
1548
1549 } while (!header_valid);
1550
1551 ctx->cur_buf_offset = p - p_src;
1552 update_capture_data_from_header(ctx);
1553 ctx->first_source_change_sent = true;
1554 v4l2_event_queue_fh(&ctx->fh, &rs_event);
1555 v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
1556 }
1557
1558 static void vicodec_return_bufs(struct vb2_queue *q, u32 state)
1559 {
1560 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1561 struct vb2_v4l2_buffer *vbuf;
1562
1563 for (;;) {
1564 if (V4L2_TYPE_IS_OUTPUT(q->type))
1565 vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
1566 else
1567 vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1568 if (vbuf == NULL)
1569 return;
1570 v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
1571 &ctx->hdl);
1572 spin_lock(ctx->lock);
1573 v4l2_m2m_buf_done(vbuf, state);
1574 spin_unlock(ctx->lock);
1575 }
1576 }
1577
1578 static unsigned int total_frame_size(struct vicodec_q_data *q_data)
1579 {
1580 unsigned int size;
1581 unsigned int chroma_div;
1582
1583 if (!q_data->info) {
1584 WARN_ON(1);
1585 return 0;
1586 }
1587 size = q_data->coded_width * q_data->coded_height;
1588 chroma_div = q_data->info->width_div * q_data->info->height_div;
1589
1590 if (q_data->info->components_num == 4)
1591 return 2 * size + 2 * (size / chroma_div);
1592 else if (q_data->info->components_num == 3)
1593 return size + 2 * (size / chroma_div);
1594 return size;
1595 }
1596
1597 static int vicodec_start_streaming(struct vb2_queue *q,
1598 unsigned int count)
1599 {
1600 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1601 struct vicodec_q_data *q_data = get_q_data(ctx, q->type);
1602 struct v4l2_fwht_state *state = &ctx->state;
1603 const struct v4l2_fwht_pixfmt_info *info = q_data->info;
1604 unsigned int size = q_data->coded_width * q_data->coded_height;
1605 unsigned int chroma_div;
1606 unsigned int total_planes_size;
1607 u8 *new_comp_frame = NULL;
1608
1609 chroma_div = info->width_div * info->height_div;
1610 q_data->sequence = 0;
1611
1612 if (V4L2_TYPE_IS_OUTPUT(q->type))
1613 ctx->last_src_buf = NULL;
1614
1615 state->gop_cnt = 0;
1616
1617 if ((V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
1618 (!V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc))
1619 return 0;
1620
1621 if (info->id == V4L2_PIX_FMT_FWHT ||
1622 info->id == V4L2_PIX_FMT_FWHT_STATELESS) {
1623 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
1624 return -EINVAL;
1625 }
1626 total_planes_size = total_frame_size(q_data);
1627 ctx->comp_max_size = total_planes_size;
1628
1629 state->visible_width = q_data->visible_width;
1630 state->visible_height = q_data->visible_height;
1631 state->coded_width = q_data->coded_width;
1632 state->coded_height = q_data->coded_height;
1633 state->stride = q_data->coded_width *
1634 info->bytesperline_mult;
1635
1636 if (ctx->is_stateless) {
1637 state->ref_stride = state->stride;
1638 return 0;
1639 }
1640 state->ref_stride = q_data->coded_width * info->luma_alpha_step;
1641
1642 state->ref_frame.buf = kvmalloc(total_planes_size, GFP_KERNEL);
1643 state->ref_frame.luma = state->ref_frame.buf;
1644 new_comp_frame = kvmalloc(ctx->comp_max_size, GFP_KERNEL);
1645
1646 if (!state->ref_frame.luma || !new_comp_frame) {
1647 kvfree(state->ref_frame.luma);
1648 kvfree(new_comp_frame);
1649 vicodec_return_bufs(q, VB2_BUF_STATE_QUEUED);
1650 return -ENOMEM;
1651 }
1652 /*
1653 * if state->compressed_frame was already allocated then
1654 * it contain data of the first frame of the new resolution
1655 */
1656 if (state->compressed_frame) {
1657 if (ctx->comp_size > ctx->comp_max_size)
1658 ctx->comp_size = ctx->comp_max_size;
1659
1660 memcpy(new_comp_frame,
1661 state->compressed_frame, ctx->comp_size);
1662 }
1663
1664 kvfree(state->compressed_frame);
1665 state->compressed_frame = new_comp_frame;
1666
1667 if (info->components_num < 3) {
1668 state->ref_frame.cb = NULL;
1669 state->ref_frame.cr = NULL;
1670 state->ref_frame.alpha = NULL;
1671 return 0;
1672 }
1673
1674 state->ref_frame.cb = state->ref_frame.luma + size;
1675 state->ref_frame.cr = state->ref_frame.cb + size / chroma_div;
1676
1677 if (info->components_num == 4)
1678 state->ref_frame.alpha =
1679 state->ref_frame.cr + size / chroma_div;
1680 else
1681 state->ref_frame.alpha = NULL;
1682
1683 return 0;
1684 }
1685
1686 static void vicodec_stop_streaming(struct vb2_queue *q)
1687 {
1688 struct vicodec_ctx *ctx = vb2_get_drv_priv(q);
1689
1690 vicodec_return_bufs(q, VB2_BUF_STATE_ERROR);
1691
1692 if (V4L2_TYPE_IS_OUTPUT(q->type)) {
1693 if (ctx->is_draining) {
1694 struct vb2_v4l2_buffer *next_dst_buf;
1695
1696 spin_lock(ctx->lock);
1697 ctx->last_src_buf = NULL;
1698 next_dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
1699 if (!next_dst_buf) {
1700 ctx->next_is_last = true;
1701 } else {
1702 next_dst_buf->flags |= V4L2_BUF_FLAG_LAST;
1703 vb2_buffer_done(&next_dst_buf->vb2_buf, VB2_BUF_STATE_DONE);
1704 ctx->is_draining = false;
1705 ctx->has_stopped = true;
1706 v4l2_event_queue_fh(&ctx->fh, &vicodec_eos_event);
1707 }
1708 spin_unlock(ctx->lock);
1709 }
1710 } else {
1711 ctx->is_draining = false;
1712 ctx->has_stopped = false;
1713 ctx->next_is_last = false;
1714 }
1715 if (!ctx->is_enc && V4L2_TYPE_IS_OUTPUT(q->type))
1716 ctx->first_source_change_sent = false;
1717
1718 if ((!V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) ||
1719 (V4L2_TYPE_IS_OUTPUT(q->type) && ctx->is_enc)) {
1720 if (!ctx->is_stateless)
1721 kvfree(ctx->state.ref_frame.buf);
1722 ctx->state.ref_frame.buf = NULL;
1723 ctx->state.ref_frame.luma = NULL;
1724 ctx->comp_max_size = 0;
1725 ctx->source_changed = false;
1726 }
1727 if (V4L2_TYPE_IS_OUTPUT(q->type) && !ctx->is_enc) {
1728 ctx->cur_buf_offset = 0;
1729 ctx->comp_size = 0;
1730 ctx->header_size = 0;
1731 ctx->comp_magic_cnt = 0;
1732 ctx->comp_has_frame = 0;
1733 ctx->comp_has_next_frame = 0;
1734 }
1735 }
1736
1737 static void vicodec_buf_request_complete(struct vb2_buffer *vb)
1738 {
1739 struct vicodec_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1740
1741 v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->hdl);
1742 }
1743
1744
1745 static const struct vb2_ops vicodec_qops = {
1746 .queue_setup = vicodec_queue_setup,
1747 .buf_out_validate = vicodec_buf_out_validate,
1748 .buf_prepare = vicodec_buf_prepare,
1749 .buf_queue = vicodec_buf_queue,
1750 .buf_request_complete = vicodec_buf_request_complete,
1751 .start_streaming = vicodec_start_streaming,
1752 .stop_streaming = vicodec_stop_streaming,
1753 .wait_prepare = vb2_ops_wait_prepare,
1754 .wait_finish = vb2_ops_wait_finish,
1755 };
1756
1757 static int queue_init(void *priv, struct vb2_queue *src_vq,
1758 struct vb2_queue *dst_vq)
1759 {
1760 struct vicodec_ctx *ctx = priv;
1761 int ret;
1762
1763 src_vq->type = (multiplanar ?
1764 V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE :
1765 V4L2_BUF_TYPE_VIDEO_OUTPUT);
1766 src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1767 src_vq->drv_priv = ctx;
1768 src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1769 src_vq->ops = &vicodec_qops;
1770 src_vq->mem_ops = &vb2_vmalloc_memops;
1771 src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1772 if (ctx->is_enc)
1773 src_vq->lock = &ctx->dev->stateful_enc.mutex;
1774 else if (ctx->is_stateless)
1775 src_vq->lock = &ctx->dev->stateless_dec.mutex;
1776 else
1777 src_vq->lock = &ctx->dev->stateful_dec.mutex;
1778 src_vq->supports_requests = ctx->is_stateless;
1779 src_vq->requires_requests = ctx->is_stateless;
1780 ret = vb2_queue_init(src_vq);
1781 if (ret)
1782 return ret;
1783
1784 dst_vq->type = (multiplanar ?
1785 V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
1786 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1787 dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
1788 dst_vq->drv_priv = ctx;
1789 dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1790 dst_vq->ops = &vicodec_qops;
1791 dst_vq->mem_ops = &vb2_vmalloc_memops;
1792 dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1793 dst_vq->lock = src_vq->lock;
1794
1795 return vb2_queue_init(dst_vq);
1796 }
1797
1798 static int vicodec_try_ctrl(struct v4l2_ctrl *ctrl)
1799 {
1800 struct vicodec_ctx *ctx = container_of(ctrl->handler,
1801 struct vicodec_ctx, hdl);
1802 const struct v4l2_ctrl_fwht_params *params;
1803 struct vicodec_q_data *q_dst = get_q_data(ctx,
1804 V4L2_BUF_TYPE_VIDEO_CAPTURE);
1805
1806 switch (ctrl->id) {
1807 case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS:
1808 if (!q_dst->info)
1809 return -EINVAL;
1810 params = ctrl->p_new.p_fwht_params;
1811 if (params->width > q_dst->coded_width ||
1812 params->width < MIN_WIDTH ||
1813 params->height > q_dst->coded_height ||
1814 params->height < MIN_HEIGHT)
1815 return -EINVAL;
1816 if (!validate_by_version(params->flags, params->version))
1817 return -EINVAL;
1818 if (!validate_stateless_params_flags(params, q_dst->info))
1819 return -EINVAL;
1820 return 0;
1821 default:
1822 return 0;
1823 }
1824 return 0;
1825 }
1826
1827 static void update_header_from_stateless_params(struct vicodec_ctx *ctx,
1828 const struct v4l2_ctrl_fwht_params *params)
1829 {
1830 struct fwht_cframe_hdr *p_hdr = &ctx->state.header;
1831
1832 p_hdr->magic1 = FWHT_MAGIC1;
1833 p_hdr->magic2 = FWHT_MAGIC2;
1834 p_hdr->version = htonl(params->version);
1835 p_hdr->width = htonl(params->width);
1836 p_hdr->height = htonl(params->height);
1837 p_hdr->flags = htonl(params->flags);
1838 p_hdr->colorspace = htonl(params->colorspace);
1839 p_hdr->xfer_func = htonl(params->xfer_func);
1840 p_hdr->ycbcr_enc = htonl(params->ycbcr_enc);
1841 p_hdr->quantization = htonl(params->quantization);
1842 }
1843
1844 static int vicodec_s_ctrl(struct v4l2_ctrl *ctrl)
1845 {
1846 struct vicodec_ctx *ctx = container_of(ctrl->handler,
1847 struct vicodec_ctx, hdl);
1848 const struct v4l2_ctrl_fwht_params *params;
1849
1850 switch (ctrl->id) {
1851 case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
1852 ctx->state.gop_size = ctrl->val;
1853 return 0;
1854 case V4L2_CID_FWHT_I_FRAME_QP:
1855 ctx->state.i_frame_qp = ctrl->val;
1856 return 0;
1857 case V4L2_CID_FWHT_P_FRAME_QP:
1858 ctx->state.p_frame_qp = ctrl->val;
1859 return 0;
1860 case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS:
1861 params = ctrl->p_new.p_fwht_params;
1862 update_header_from_stateless_params(ctx, params);
1863 ctx->state.ref_frame_ts = params->backward_ref_ts;
1864 return 0;
1865 }
1866 return -EINVAL;
1867 }
1868
1869 static const struct v4l2_ctrl_ops vicodec_ctrl_ops = {
1870 .s_ctrl = vicodec_s_ctrl,
1871 .try_ctrl = vicodec_try_ctrl,
1872 };
1873
1874 static const struct v4l2_ctrl_config vicodec_ctrl_stateless_state = {
1875 .ops = &vicodec_ctrl_ops,
1876 .id = V4L2_CID_MPEG_VIDEO_FWHT_PARAMS,
1877 .elem_size = sizeof(struct v4l2_ctrl_fwht_params),
1878 };
1879
1880 /*
1881 * File operations
1882 */
1883 static int vicodec_open(struct file *file)
1884 {
1885 const struct v4l2_fwht_pixfmt_info *info = v4l2_fwht_get_pixfmt(0);
1886 struct video_device *vfd = video_devdata(file);
1887 struct vicodec_dev *dev = video_drvdata(file);
1888 struct vicodec_ctx *ctx = NULL;
1889 struct v4l2_ctrl_handler *hdl;
1890 unsigned int raw_size;
1891 unsigned int comp_size;
1892 int rc = 0;
1893
1894 if (mutex_lock_interruptible(vfd->lock))
1895 return -ERESTARTSYS;
1896 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1897 if (!ctx) {
1898 rc = -ENOMEM;
1899 goto open_unlock;
1900 }
1901
1902 if (vfd == &dev->stateful_enc.vfd)
1903 ctx->is_enc = true;
1904 else if (vfd == &dev->stateless_dec.vfd)
1905 ctx->is_stateless = true;
1906
1907 v4l2_fh_init(&ctx->fh, video_devdata(file));
1908 file->private_data = &ctx->fh;
1909 ctx->dev = dev;
1910 hdl = &ctx->hdl;
1911 v4l2_ctrl_handler_init(hdl, 5);
1912 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1913 1, 16, 1, 10);
1914 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_I_FRAME_QP,
1915 1, 31, 1, 20);
1916 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops, V4L2_CID_FWHT_P_FRAME_QP,
1917 1, 31, 1, 20);
1918 if (ctx->is_enc)
1919 v4l2_ctrl_new_std(hdl, &vicodec_ctrl_ops,
1920 V4L2_CID_MIN_BUFFERS_FOR_OUTPUT, 1, 1, 1, 1);
1921 if (ctx->is_stateless)
1922 v4l2_ctrl_new_custom(hdl, &vicodec_ctrl_stateless_state, NULL);
1923 if (hdl->error) {
1924 rc = hdl->error;
1925 v4l2_ctrl_handler_free(hdl);
1926 kfree(ctx);
1927 goto open_unlock;
1928 }
1929 ctx->fh.ctrl_handler = hdl;
1930 v4l2_ctrl_handler_setup(hdl);
1931
1932 if (ctx->is_enc)
1933 ctx->q_data[V4L2_M2M_SRC].info = info;
1934 else if (ctx->is_stateless)
1935 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_stateless_fwht;
1936 else
1937 ctx->q_data[V4L2_M2M_SRC].info = &pixfmt_fwht;
1938 ctx->q_data[V4L2_M2M_SRC].coded_width = 1280;
1939 ctx->q_data[V4L2_M2M_SRC].coded_height = 720;
1940 ctx->q_data[V4L2_M2M_SRC].visible_width = 1280;
1941 ctx->q_data[V4L2_M2M_SRC].visible_height = 720;
1942 raw_size = 1280 * 720 * info->sizeimage_mult / info->sizeimage_div;
1943 comp_size = 1280 * 720 * pixfmt_fwht.sizeimage_mult /
1944 pixfmt_fwht.sizeimage_div;
1945 if (ctx->is_enc)
1946 ctx->q_data[V4L2_M2M_SRC].sizeimage = raw_size;
1947 else if (ctx->is_stateless)
1948 ctx->q_data[V4L2_M2M_SRC].sizeimage = comp_size;
1949 else
1950 ctx->q_data[V4L2_M2M_SRC].sizeimage =
1951 comp_size + sizeof(struct fwht_cframe_hdr);
1952 ctx->q_data[V4L2_M2M_DST] = ctx->q_data[V4L2_M2M_SRC];
1953 if (ctx->is_enc) {
1954 ctx->q_data[V4L2_M2M_DST].info = &pixfmt_fwht;
1955 ctx->q_data[V4L2_M2M_DST].sizeimage =
1956 comp_size + sizeof(struct fwht_cframe_hdr);
1957 } else {
1958 ctx->q_data[V4L2_M2M_DST].info = info;
1959 ctx->q_data[V4L2_M2M_DST].sizeimage = raw_size;
1960 }
1961
1962 ctx->state.colorspace = V4L2_COLORSPACE_REC709;
1963
1964 if (ctx->is_enc) {
1965 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_enc.m2m_dev,
1966 ctx, &queue_init);
1967 ctx->lock = &dev->stateful_enc.lock;
1968 } else if (ctx->is_stateless) {
1969 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateless_dec.m2m_dev,
1970 ctx, &queue_init);
1971 ctx->lock = &dev->stateless_dec.lock;
1972 } else {
1973 ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->stateful_dec.m2m_dev,
1974 ctx, &queue_init);
1975 ctx->lock = &dev->stateful_dec.lock;
1976 }
1977
1978 if (IS_ERR(ctx->fh.m2m_ctx)) {
1979 rc = PTR_ERR(ctx->fh.m2m_ctx);
1980
1981 v4l2_ctrl_handler_free(hdl);
1982 v4l2_fh_exit(&ctx->fh);
1983 kfree(ctx);
1984 goto open_unlock;
1985 }
1986
1987 v4l2_fh_add(&ctx->fh);
1988
1989 open_unlock:
1990 mutex_unlock(vfd->lock);
1991 return rc;
1992 }
1993
1994 static int vicodec_release(struct file *file)
1995 {
1996 struct video_device *vfd = video_devdata(file);
1997 struct vicodec_ctx *ctx = file2ctx(file);
1998
1999 mutex_lock(vfd->lock);
2000 v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
2001 mutex_unlock(vfd->lock);
2002 v4l2_fh_del(&ctx->fh);
2003 v4l2_fh_exit(&ctx->fh);
2004 v4l2_ctrl_handler_free(&ctx->hdl);
2005 kvfree(ctx->state.compressed_frame);
2006 kfree(ctx);
2007
2008 return 0;
2009 }
2010
2011 static int vicodec_request_validate(struct media_request *req)
2012 {
2013 struct media_request_object *obj;
2014 struct v4l2_ctrl_handler *parent_hdl, *hdl;
2015 struct vicodec_ctx *ctx = NULL;
2016 struct v4l2_ctrl *ctrl;
2017 unsigned int count;
2018
2019 list_for_each_entry(obj, &req->objects, list) {
2020 struct vb2_buffer *vb;
2021
2022 if (vb2_request_object_is_buffer(obj)) {
2023 vb = container_of(obj, struct vb2_buffer, req_obj);
2024 ctx = vb2_get_drv_priv(vb->vb2_queue);
2025
2026 break;
2027 }
2028 }
2029
2030 if (!ctx) {
2031 pr_err("No buffer was provided with the request\n");
2032 return -ENOENT;
2033 }
2034
2035 count = vb2_request_buffer_cnt(req);
2036 if (!count) {
2037 v4l2_info(&ctx->dev->v4l2_dev,
2038 "No buffer was provided with the request\n");
2039 return -ENOENT;
2040 } else if (count > 1) {
2041 v4l2_info(&ctx->dev->v4l2_dev,
2042 "More than one buffer was provided with the request\n");
2043 return -EINVAL;
2044 }
2045
2046 parent_hdl = &ctx->hdl;
2047
2048 hdl = v4l2_ctrl_request_hdl_find(req, parent_hdl);
2049 if (!hdl) {
2050 v4l2_info(&ctx->dev->v4l2_dev, "Missing codec control\n");
2051 return -ENOENT;
2052 }
2053 ctrl = v4l2_ctrl_request_hdl_ctrl_find(hdl,
2054 vicodec_ctrl_stateless_state.id);
2055 if (!ctrl) {
2056 v4l2_info(&ctx->dev->v4l2_dev,
2057 "Missing required codec control\n");
2058 return -ENOENT;
2059 }
2060
2061 return vb2_request_validate(req);
2062 }
2063
2064 static const struct v4l2_file_operations vicodec_fops = {
2065 .owner = THIS_MODULE,
2066 .open = vicodec_open,
2067 .release = vicodec_release,
2068 .poll = v4l2_m2m_fop_poll,
2069 .unlocked_ioctl = video_ioctl2,
2070 .mmap = v4l2_m2m_fop_mmap,
2071 };
2072
2073 static const struct video_device vicodec_videodev = {
2074 .name = VICODEC_NAME,
2075 .vfl_dir = VFL_DIR_M2M,
2076 .fops = &vicodec_fops,
2077 .ioctl_ops = &vicodec_ioctl_ops,
2078 .minor = -1,
2079 .release = video_device_release_empty,
2080 };
2081
2082 static const struct media_device_ops vicodec_m2m_media_ops = {
2083 .req_validate = vicodec_request_validate,
2084 .req_queue = v4l2_m2m_request_queue,
2085 };
2086
2087 static const struct v4l2_m2m_ops m2m_ops = {
2088 .device_run = device_run,
2089 .job_ready = job_ready,
2090 };
2091
2092 static int register_instance(struct vicodec_dev *dev,
2093 struct vicodec_dev_instance *dev_instance,
2094 const char *name, bool is_enc)
2095 {
2096 struct video_device *vfd;
2097 int ret;
2098
2099 spin_lock_init(&dev_instance->lock);
2100 mutex_init(&dev_instance->mutex);
2101 dev_instance->m2m_dev = v4l2_m2m_init(&m2m_ops);
2102 if (IS_ERR(dev_instance->m2m_dev)) {
2103 v4l2_err(&dev->v4l2_dev, "Failed to init vicodec enc device\n");
2104 return PTR_ERR(dev_instance->m2m_dev);
2105 }
2106
2107 dev_instance->vfd = vicodec_videodev;
2108 vfd = &dev_instance->vfd;
2109 vfd->lock = &dev_instance->mutex;
2110 vfd->v4l2_dev = &dev->v4l2_dev;
2111 strscpy(vfd->name, name, sizeof(vfd->name));
2112 vfd->device_caps = V4L2_CAP_STREAMING |
2113 (multiplanar ? V4L2_CAP_VIDEO_M2M_MPLANE : V4L2_CAP_VIDEO_M2M);
2114 if (is_enc) {
2115 v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);
2116 v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);
2117 } else {
2118 v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);
2119 v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);
2120 }
2121 video_set_drvdata(vfd, dev);
2122
2123 ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
2124 if (ret) {
2125 v4l2_err(&dev->v4l2_dev, "Failed to register video device '%s'\n", name);
2126 v4l2_m2m_release(dev_instance->m2m_dev);
2127 return ret;
2128 }
2129 v4l2_info(&dev->v4l2_dev, "Device '%s' registered as /dev/video%d\n",
2130 name, vfd->num);
2131 return 0;
2132 }
2133
2134 static void vicodec_v4l2_dev_release(struct v4l2_device *v4l2_dev)
2135 {
2136 struct vicodec_dev *dev = container_of(v4l2_dev, struct vicodec_dev, v4l2_dev);
2137
2138 v4l2_device_unregister(&dev->v4l2_dev);
2139 v4l2_m2m_release(dev->stateful_enc.m2m_dev);
2140 v4l2_m2m_release(dev->stateful_dec.m2m_dev);
2141 v4l2_m2m_release(dev->stateless_dec.m2m_dev);
2142 #ifdef CONFIG_MEDIA_CONTROLLER
2143 media_device_cleanup(&dev->mdev);
2144 #endif
2145 kfree(dev);
2146 }
2147
2148 static int vicodec_probe(struct platform_device *pdev)
2149 {
2150 struct vicodec_dev *dev;
2151 int ret;
2152
2153 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2154 if (!dev)
2155 return -ENOMEM;
2156
2157 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2158 if (ret)
2159 goto free_dev;
2160
2161 dev->v4l2_dev.release = vicodec_v4l2_dev_release;
2162
2163 #ifdef CONFIG_MEDIA_CONTROLLER
2164 dev->mdev.dev = &pdev->dev;
2165 strscpy(dev->mdev.model, "vicodec", sizeof(dev->mdev.model));
2166 strscpy(dev->mdev.bus_info, "platform:vicodec",
2167 sizeof(dev->mdev.bus_info));
2168 media_device_init(&dev->mdev);
2169 dev->mdev.ops = &vicodec_m2m_media_ops;
2170 dev->v4l2_dev.mdev = &dev->mdev;
2171 #endif
2172
2173 platform_set_drvdata(pdev, dev);
2174
2175 if (register_instance(dev, &dev->stateful_enc,
2176 "stateful-encoder", true))
2177 goto unreg_dev;
2178
2179 if (register_instance(dev, &dev->stateful_dec,
2180 "stateful-decoder", false))
2181 goto unreg_sf_enc;
2182
2183 if (register_instance(dev, &dev->stateless_dec,
2184 "stateless-decoder", false))
2185 goto unreg_sf_dec;
2186
2187 #ifdef CONFIG_MEDIA_CONTROLLER
2188 ret = v4l2_m2m_register_media_controller(dev->stateful_enc.m2m_dev,
2189 &dev->stateful_enc.vfd,
2190 MEDIA_ENT_F_PROC_VIDEO_ENCODER);
2191 if (ret) {
2192 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for enc\n");
2193 goto unreg_m2m;
2194 }
2195
2196 ret = v4l2_m2m_register_media_controller(dev->stateful_dec.m2m_dev,
2197 &dev->stateful_dec.vfd,
2198 MEDIA_ENT_F_PROC_VIDEO_DECODER);
2199 if (ret) {
2200 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for dec\n");
2201 goto unreg_m2m_sf_enc_mc;
2202 }
2203
2204 ret = v4l2_m2m_register_media_controller(dev->stateless_dec.m2m_dev,
2205 &dev->stateless_dec.vfd,
2206 MEDIA_ENT_F_PROC_VIDEO_DECODER);
2207 if (ret) {
2208 v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem media controller for stateless dec\n");
2209 goto unreg_m2m_sf_dec_mc;
2210 }
2211
2212 ret = media_device_register(&dev->mdev);
2213 if (ret) {
2214 v4l2_err(&dev->v4l2_dev, "Failed to register mem2mem media device\n");
2215 goto unreg_m2m_sl_dec_mc;
2216 }
2217 #endif
2218 return 0;
2219
2220 #ifdef CONFIG_MEDIA_CONTROLLER
2221 unreg_m2m_sl_dec_mc:
2222 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
2223 unreg_m2m_sf_dec_mc:
2224 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
2225 unreg_m2m_sf_enc_mc:
2226 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
2227 unreg_m2m:
2228 video_unregister_device(&dev->stateless_dec.vfd);
2229 v4l2_m2m_release(dev->stateless_dec.m2m_dev);
2230 #endif
2231 unreg_sf_dec:
2232 video_unregister_device(&dev->stateful_dec.vfd);
2233 v4l2_m2m_release(dev->stateful_dec.m2m_dev);
2234 unreg_sf_enc:
2235 video_unregister_device(&dev->stateful_enc.vfd);
2236 v4l2_m2m_release(dev->stateful_enc.m2m_dev);
2237 unreg_dev:
2238 v4l2_device_unregister(&dev->v4l2_dev);
2239 free_dev:
2240 kfree(dev);
2241
2242 return ret;
2243 }
2244
2245 static int vicodec_remove(struct platform_device *pdev)
2246 {
2247 struct vicodec_dev *dev = platform_get_drvdata(pdev);
2248
2249 v4l2_info(&dev->v4l2_dev, "Removing " VICODEC_NAME);
2250
2251 #ifdef CONFIG_MEDIA_CONTROLLER
2252 media_device_unregister(&dev->mdev);
2253 v4l2_m2m_unregister_media_controller(dev->stateful_enc.m2m_dev);
2254 v4l2_m2m_unregister_media_controller(dev->stateful_dec.m2m_dev);
2255 v4l2_m2m_unregister_media_controller(dev->stateless_dec.m2m_dev);
2256 #endif
2257
2258 video_unregister_device(&dev->stateful_enc.vfd);
2259 video_unregister_device(&dev->stateful_dec.vfd);
2260 video_unregister_device(&dev->stateless_dec.vfd);
2261 v4l2_device_put(&dev->v4l2_dev);
2262
2263 return 0;
2264 }
2265
2266 static struct platform_driver vicodec_pdrv = {
2267 .probe = vicodec_probe,
2268 .remove = vicodec_remove,
2269 .driver = {
2270 .name = VICODEC_NAME,
2271 },
2272 };
2273
2274 static void __exit vicodec_exit(void)
2275 {
2276 platform_driver_unregister(&vicodec_pdrv);
2277 platform_device_unregister(&vicodec_pdev);
2278 }
2279
2280 static int __init vicodec_init(void)
2281 {
2282 int ret;
2283
2284 ret = platform_device_register(&vicodec_pdev);
2285 if (ret)
2286 return ret;
2287
2288 ret = platform_driver_register(&vicodec_pdrv);
2289 if (ret)
2290 platform_device_unregister(&vicodec_pdev);
2291
2292 return ret;
2293 }
2294
2295 module_init(vicodec_init);
2296 module_exit(vicodec_exit);
Linux with added FPC-III support