aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/media/hantro/hantro_v4l2.c
blob: f5fbdbc4ffdb183b3bf00a27e7c6b95a25668953 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
// SPDX-License-Identifier: GPL-2.0
/*
 * Hantro VPU codec driver
 *
 * Copyright (C) 2018 Collabora, Ltd.
 * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
 *	Alpha Lin <Alpha.Lin@rock-chips.com>
 *	Jeffy Chen <jeffy.chen@rock-chips.com>
 *
 * Copyright 2018 Google LLC.
 *	Tomasz Figa <tfiga@chromium.org>
 *
 * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.
 * Copyright (C) 2010-2011 Samsung Electronics Co., Ltd.
 */

#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/videodev2.h>
#include <linux/workqueue.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-sg.h>

#include "hantro.h"
#include "hantro_hw.h"
#include "hantro_v4l2.h"

static int hantro_set_fmt_out(struct hantro_ctx *ctx,
			      struct v4l2_pix_format_mplane *pix_mp);
static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
			      struct v4l2_pix_format_mplane *pix_mp);

static const struct hantro_fmt *
hantro_get_formats(const struct hantro_ctx *ctx, unsigned int *num_fmts)
{
	const struct hantro_fmt *formats;

	if (ctx->is_encoder) {
		formats = ctx->dev->variant->enc_fmts;
		*num_fmts = ctx->dev->variant->num_enc_fmts;
	} else {
		formats = ctx->dev->variant->dec_fmts;
		*num_fmts = ctx->dev->variant->num_dec_fmts;
	}

	return formats;
}

static const struct hantro_fmt *
hantro_get_postproc_formats(const struct hantro_ctx *ctx,
			    unsigned int *num_fmts)
{
	if (ctx->is_encoder) {
		*num_fmts = 0;
		return NULL;
	}

	*num_fmts = ctx->dev->variant->num_postproc_fmts;
	return ctx->dev->variant->postproc_fmts;
}

static const struct hantro_fmt *
hantro_find_format(const struct hantro_ctx *ctx, u32 fourcc)
{
	const struct hantro_fmt *formats;
	unsigned int i, num_fmts;

	formats = hantro_get_formats(ctx, &num_fmts);
	for (i = 0; i < num_fmts; i++)
		if (formats[i].fourcc == fourcc)
			return &formats[i];

	formats = hantro_get_postproc_formats(ctx, &num_fmts);
	for (i = 0; i < num_fmts; i++)
		if (formats[i].fourcc == fourcc)
			return &formats[i];
	return NULL;
}

static const struct hantro_fmt *
hantro_get_default_fmt(const struct hantro_ctx *ctx, bool bitstream)
{
	const struct hantro_fmt *formats;
	unsigned int i, num_fmts;

	formats = hantro_get_formats(ctx, &num_fmts);
	for (i = 0; i < num_fmts; i++) {
		if (bitstream == (formats[i].codec_mode !=
				  HANTRO_MODE_NONE))
			return &formats[i];
	}
	return NULL;
}

static int vidioc_querycap(struct file *file, void *priv,
			   struct v4l2_capability *cap)
{
	struct hantro_dev *vpu = video_drvdata(file);
	struct video_device *vdev = video_devdata(file);

	strscpy(cap->driver, vpu->dev->driver->name, sizeof(cap->driver));
	strscpy(cap->card, vdev->name, sizeof(cap->card));
	snprintf(cap->bus_info, sizeof(cap->bus_info), "platform: %s",
		 vpu->dev->driver->name);
	return 0;
}

static int vidioc_enum_framesizes(struct file *file, void *priv,
				  struct v4l2_frmsizeenum *fsize)
{
	struct hantro_ctx *ctx = fh_to_ctx(priv);
	const struct hantro_fmt *fmt;

	if (fsize->index != 0) {
		vpu_debug(0, "invalid frame size index (expected 0, got %d)\n",
			  fsize->index);
		return -EINVAL;
	}

	fmt = hantro_find_format(ctx, fsize->pixel_format);
	if (!fmt) {
		vpu_debug(0, "unsupported bitstream format (%08x)\n",
			  fsize->pixel_format);
		return -EINVAL;
	}

	/* This only makes sense for coded formats */
	if (fmt->codec_mode == HANTRO_MODE_NONE)
		return -EINVAL;

	fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
	fsize->stepwise = fmt->frmsize;

	return 0;
}

static int vidioc_enum_fmt(struct file *file, void *priv,
			   struct v4l2_fmtdesc *f, bool capture)

{
	struct hantro_ctx *ctx = fh_to_ctx(priv);
	const struct hantro_fmt *fmt, *formats;
	unsigned int num_fmts, i, j = 0;
	bool skip_mode_none;

	/*
	 * When dealing with an encoder:
	 *  - on the capture side we want to filter out all MODE_NONE formats.
	 *  - on the output side we want to filter out all formats that are
	 *    not MODE_NONE.
	 * When dealing with a decoder:
	 *  - on the capture side we want to filter out all formats that are
	 *    not MODE_NONE.
	 *  - on the output side we want to filter out all MODE_NONE formats.
	 */
	skip_mode_none = capture == ctx->is_encoder;

	formats = hantro_get_formats(ctx, &num_fmts);
	for (i = 0; i < num_fmts; i++) {
		bool mode_none = formats[i].codec_mode == HANTRO_MODE_NONE;

		if (skip_mode_none == mode_none)
			continue;
		if (j == f->index) {
			fmt = &formats[i];
			f->pixelformat = fmt->fourcc;
			return 0;
		}
		++j;
	}

	/*
	 * Enumerate post-processed formats. As per the specification,
	 * we enumerated these formats after natively decoded formats
	 * as a hint for applications on what's the preferred fomat.
	 */
	if (!capture)
		return -EINVAL;
	formats = hantro_get_postproc_formats(ctx, &num_fmts);
	for (i = 0; i < num_fmts; i++) {
		if (j == f->index) {
			fmt = &formats[i];
			f->pixelformat = fmt->fourcc;
			return 0;
		}
		++j;
	}

	return -EINVAL;
}

static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
				   struct v4l2_fmtdesc *f)
{
	return vidioc_enum_fmt(file, priv, f, true);
}

static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
				   struct v4l2_fmtdesc *f)
{
	return vidioc_enum_fmt(file, priv, f, false);
}

static int vidioc_g_fmt_out_mplane(struct file *file, void *priv,
				   struct v4l2_format *f)
{
	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
	struct hantro_ctx *ctx = fh_to_ctx(priv);

	vpu_debug(4, "f->type = %d\n", f->type);

	*pix_mp = ctx->src_fmt;

	return 0;
}

static int vidioc_g_fmt_cap_mplane(struct file *file, void *priv,
				   struct v4l2_format *f)
{
	struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
	struct hantro_ctx *ctx = fh_to_ctx(priv);

	vpu_debug(4, "f->type = %d\n", f->type);

	*pix_mp = ctx->dst_fmt;

	return 0;
}

static int hantro_try_fmt(const struct hantro_ctx *ctx,
			  struct v4l2_pix_format_mplane *pix_mp,
			  enum v4l2_buf_type type)
{
	const struct hantro_fmt *fmt, *vpu_fmt;
	bool capture = V4L2_TYPE_IS_CAPTURE(type);
	bool coded;

	coded = capture == ctx->is_encoder;

	vpu_debug(4, "trying format %c%c%c%c\n",
		  (pix_mp->pixelformat & 0x7f),
		  (pix_mp->pixelformat >> 8) & 0x7f,
		  (pix_mp->pixelformat >> 16) & 0x7f,
		  (pix_mp->pixelformat >> 24) & 0x7f);

	fmt = hantro_find_format(ctx, pix_mp->pixelformat);
	if (!fmt) {
		fmt = hantro_get_default_fmt(ctx, coded);
		pix_mp->pixelformat = fmt->fourcc;
	}

	if (coded) {
		pix_mp->num_planes = 1;
		vpu_fmt = fmt;
	} else if (ctx->is_encoder) {
		vpu_fmt = ctx->vpu_dst_fmt;
	} else {
		vpu_fmt = ctx->vpu_src_fmt;
		/*
		 * Width/height on the CAPTURE end of a decoder are ignored and
		 * replaced by the OUTPUT ones.
		 */
		pix_mp->width = ctx->src_fmt.width;
		pix_mp->height = ctx->src_fmt.height;
	}

	pix_mp->field = V4L2_FIELD_NONE;

	v4l2_apply_frmsize_constraints(&pix_mp->width, &pix_mp->height,
				       &vpu_fmt->frmsize);

	if (!coded) {
		/* Fill remaining fields */
		v4l2_fill_pixfmt_mp(pix_mp, fmt->fourcc, pix_mp->width,
				    pix_mp->height);
		if (ctx->vpu_src_fmt->fourcc == V4L2_PIX_FMT_H264_SLICE &&
		    !hantro_needs_postproc(ctx, fmt))
			pix_mp->plane_fmt[0].sizeimage +=
				hantro_h264_mv_size(pix_mp->width,
						    pix_mp->height);
	} else if (!pix_mp->plane_fmt[0].sizeimage) {
		/*
		 * For coded formats the application can specify
		 * sizeimage. If the application passes a zero sizeimage,
		 * let's default to the maximum frame size.
		 */
		pix_mp->plane_fmt[0].sizeimage = fmt->header_size +
			pix_mp->width * pix_mp->height * fmt->max_depth;
	}

	return 0;
}

static int vidioc_try_fmt_cap_mplane(struct file *file, void *priv,
				     struct v4l2_format *f)
{
	return hantro_try_fmt(fh_to_ctx(priv), &f->fmt.pix_mp, f->type);
}

static int vidioc_try_fmt_out_mplane(struct file *file, void *priv,
				     struct v4l2_format *f)
{
	return hantro_try_fmt(fh_to_ctx(priv), &f->fmt.pix_mp, f->type);
}

static void
hantro_reset_fmt(struct v4l2_pix_format_mplane *fmt,
		 const struct hantro_fmt *vpu_fmt)
{
	memset(fmt, 0, sizeof(*fmt));

	fmt->pixelformat = vpu_fmt->fourcc;
	fmt->field = V4L2_FIELD_NONE;
	fmt->colorspace = V4L2_COLORSPACE_JPEG,
	fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
	fmt->quantization = V4L2_QUANTIZATION_DEFAULT;
	fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT;
}

static void
hantro_reset_encoded_fmt(struct hantro_ctx *ctx)
{
	const struct hantro_fmt *vpu_fmt;
	struct v4l2_pix_format_mplane *fmt;

	vpu_fmt = hantro_get_default_fmt(ctx, true);

	if (ctx->is_encoder) {
		ctx->vpu_dst_fmt = vpu_fmt;
		fmt = &ctx->dst_fmt;
	} else {
		ctx->vpu_src_fmt = vpu_fmt;
		fmt = &ctx->src_fmt;
	}

	hantro_reset_fmt(fmt, vpu_fmt);
	fmt->width = vpu_fmt->frmsize.min_width;
	fmt->height = vpu_fmt->frmsize.min_height;
	if (ctx->is_encoder)
		hantro_set_fmt_cap(ctx, fmt);
	else
		hantro_set_fmt_out(ctx, fmt);
}

static void
hantro_reset_raw_fmt(struct hantro_ctx *ctx)
{
	const struct hantro_fmt *raw_vpu_fmt;
	struct v4l2_pix_format_mplane *raw_fmt, *encoded_fmt;

	raw_vpu_fmt = hantro_get_default_fmt(ctx, false);

	if (ctx->is_encoder) {
		ctx->vpu_src_fmt = raw_vpu_fmt;
		raw_fmt = &ctx->src_fmt;
		encoded_fmt = &ctx->dst_fmt;
	} else {
		ctx->vpu_dst_fmt = raw_vpu_fmt;
		raw_fmt = &ctx->dst_fmt;
		encoded_fmt = &ctx->src_fmt;
	}

	hantro_reset_fmt(raw_fmt, raw_vpu_fmt);
	raw_fmt->width = encoded_fmt->width;
	raw_fmt->height = encoded_fmt->height;
	if (ctx->is_encoder)
		hantro_set_fmt_out(ctx, raw_fmt);
	else
		hantro_set_fmt_cap(ctx, raw_fmt);
}

void hantro_reset_fmts(struct hantro_ctx *ctx)
{
	hantro_reset_encoded_fmt(ctx);
	hantro_reset_raw_fmt(ctx);
}

static void
hantro_update_requires_request(struct hantro_ctx *ctx, u32 fourcc)
{
	switch (fourcc) {
	case V4L2_PIX_FMT_JPEG:
		ctx->fh.m2m_ctx->out_q_ctx.q.requires_requests = false;
		break;
	case V4L2_PIX_FMT_MPEG2_SLICE:
	case V4L2_PIX_FMT_VP8_FRAME:
	case V4L2_PIX_FMT_H264_SLICE:
		ctx->fh.m2m_ctx->out_q_ctx.q.requires_requests = true;
		break;
	default:
		break;
	}
}

static int hantro_set_fmt_out(struct hantro_ctx *ctx,
			      struct v4l2_pix_format_mplane *pix_mp)
{
	struct vb2_queue *vq;
	int ret;

	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
			     V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
	ret = hantro_try_fmt(ctx, pix_mp, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
	if (ret)
		return ret;

	if (!ctx->is_encoder) {
		struct vb2_queue *peer_vq;

		/*
		 * In order to support dynamic resolution change,
		 * the decoder admits a resolution change, as long
		 * as the pixelformat remains. Can't be done if streaming.
		 */
		if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
		    pix_mp->pixelformat != ctx->src_fmt.pixelformat))
			return -EBUSY;
		/*
		 * Since format change on the OUTPUT queue will reset
		 * the CAPTURE queue, we can't allow doing so
		 * when the CAPTURE queue has buffers allocated.
		 */
		peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
					  V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
		if (vb2_is_busy(peer_vq))
			return -EBUSY;
	} else {
		/*
		 * The encoder doesn't admit a format change if
		 * there are OUTPUT buffers allocated.
		 */
		if (vb2_is_busy(vq))
			return -EBUSY;
	}

	ctx->vpu_src_fmt = hantro_find_format(ctx, pix_mp->pixelformat);
	ctx->src_fmt = *pix_mp;

	/*
	 * Current raw format might have become invalid with newly
	 * selected codec, so reset it to default just to be safe and
	 * keep internal driver state sane. User is mandated to set
	 * the raw format again after we return, so we don't need
	 * anything smarter.
	 * Note that hantro_reset_raw_fmt() also propagates size
	 * changes to the raw format.
	 */
	if (!ctx->is_encoder)
		hantro_reset_raw_fmt(ctx);

	/* Colorimetry information are always propagated. */
	ctx->dst_fmt.colorspace = pix_mp->colorspace;
	ctx->dst_fmt.ycbcr_enc = pix_mp->ycbcr_enc;
	ctx->dst_fmt.xfer_func = pix_mp->xfer_func;
	ctx->dst_fmt.quantization = pix_mp->quantization;

	hantro_update_requires_request(ctx, pix_mp->pixelformat);

	vpu_debug(0, "OUTPUT codec mode: %d\n", ctx->vpu_src_fmt->codec_mode);
	vpu_debug(0, "fmt - w: %d, h: %d\n",
		  pix_mp->width, pix_mp->height);
	return 0;
}

static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
			      struct v4l2_pix_format_mplane *pix_mp)
{
	struct vb2_queue *vq;
	int ret;

	/* Change not allowed if queue is busy. */
	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
			     V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
	if (vb2_is_busy(vq))
		return -EBUSY;

	if (ctx->is_encoder) {
		struct vb2_queue *peer_vq;

		/*
		 * Since format change on the CAPTURE queue will reset
		 * the OUTPUT queue, we can't allow doing so
		 * when the OUTPUT queue has buffers allocated.
		 */
		peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
					  V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
		if (vb2_is_busy(peer_vq) &&
		    (pix_mp->pixelformat != ctx->dst_fmt.pixelformat ||
		     pix_mp->height != ctx->dst_fmt.height ||
		     pix_mp->width != ctx->dst_fmt.width))
			return -EBUSY;
	}

	ret = hantro_try_fmt(ctx, pix_mp, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
	if (ret)
		return ret;

	ctx->vpu_dst_fmt = hantro_find_format(ctx, pix_mp->pixelformat);
	ctx->dst_fmt = *pix_mp;

	/*
	 * Current raw format might have become invalid with newly
	 * selected codec, so reset it to default just to be safe and
	 * keep internal driver state sane. User is mandated to set
	 * the raw format again after we return, so we don't need
	 * anything smarter.
	 * Note that hantro_reset_raw_fmt() also propagates size
	 * changes to the raw format.
	 */
	if (ctx->is_encoder)
		hantro_reset_raw_fmt(ctx);

	/* Colorimetry information are always propagated. */
	ctx->src_fmt.colorspace = pix_mp->colorspace;
	ctx->src_fmt.ycbcr_enc = pix_mp->ycbcr_enc;
	ctx->src_fmt.xfer_func = pix_mp->xfer_func;
	ctx->src_fmt.quantization = pix_mp->quantization;

	vpu_debug(0, "CAPTURE codec mode: %d\n", ctx->vpu_dst_fmt->codec_mode);
	vpu_debug(0, "fmt - w: %d, h: %d\n",
		  pix_mp->width, pix_mp->height);

	hantro_update_requires_request(ctx, pix_mp->pixelformat);

	return 0;
}

static int
vidioc_s_fmt_out_mplane(struct file *file, void *priv, struct v4l2_format *f)
{
	return hantro_set_fmt_out(fh_to_ctx(priv), &f->fmt.pix_mp);
}

static int
vidioc_s_fmt_cap_mplane(struct file *file, void *priv, struct v4l2_format *f)
{
	return hantro_set_fmt_cap(fh_to_ctx(priv), &f->fmt.pix_mp);
}

const struct v4l2_ioctl_ops hantro_ioctl_ops = {
	.vidioc_querycap = vidioc_querycap,
	.vidioc_enum_framesizes = vidioc_enum_framesizes,

	.vidioc_try_fmt_vid_cap_mplane = vidioc_try_fmt_cap_mplane,
	.vidioc_try_fmt_vid_out_mplane = vidioc_try_fmt_out_mplane,
	.vidioc_s_fmt_vid_out_mplane = vidioc_s_fmt_out_mplane,
	.vidioc_s_fmt_vid_cap_mplane = vidioc_s_fmt_cap_mplane,
	.vidioc_g_fmt_vid_out_mplane = vidioc_g_fmt_out_mplane,
	.vidioc_g_fmt_vid_cap_mplane = vidioc_g_fmt_cap_mplane,
	.vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
	.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,

	.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
	.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
	.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
	.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
	.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
	.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
	.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,

	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,

	.vidioc_streamon = v4l2_m2m_ioctl_streamon,
	.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
};

static int
hantro_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
		   unsigned int *num_planes, unsigned int sizes[],
		   struct device *alloc_devs[])
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(vq);
	struct v4l2_pix_format_mplane *pixfmt;
	int i;

	switch (vq->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
		pixfmt = &ctx->dst_fmt;
		break;
	case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
		pixfmt = &ctx->src_fmt;
		break;
	default:
		vpu_err("invalid queue type: %d\n", vq->type);
		return -EINVAL;
	}

	if (*num_planes) {
		if (*num_planes != pixfmt->num_planes)
			return -EINVAL;
		for (i = 0; i < pixfmt->num_planes; ++i)
			if (sizes[i] < pixfmt->plane_fmt[i].sizeimage)
				return -EINVAL;
		return 0;
	}

	*num_planes = pixfmt->num_planes;
	for (i = 0; i < pixfmt->num_planes; ++i)
		sizes[i] = pixfmt->plane_fmt[i].sizeimage;
	return 0;
}

static int
hantro_buf_plane_check(struct vb2_buffer *vb,
		       struct v4l2_pix_format_mplane *pixfmt)
{
	unsigned int sz;
	int i;

	for (i = 0; i < pixfmt->num_planes; ++i) {
		sz = pixfmt->plane_fmt[i].sizeimage;
		vpu_debug(4, "plane %d size: %ld, sizeimage: %u\n",
			  i, vb2_plane_size(vb, i), sz);
		if (vb2_plane_size(vb, i) < sz) {
			vpu_err("plane %d is too small for output\n", i);
			return -EINVAL;
		}
	}
	return 0;
}

static int hantro_buf_prepare(struct vb2_buffer *vb)
{
	struct vb2_queue *vq = vb->vb2_queue;
	struct hantro_ctx *ctx = vb2_get_drv_priv(vq);
	struct v4l2_pix_format_mplane *pix_fmt;
	int ret;

	if (V4L2_TYPE_IS_OUTPUT(vq->type))
		pix_fmt = &ctx->src_fmt;
	else
		pix_fmt = &ctx->dst_fmt;
	ret = hantro_buf_plane_check(vb, pix_fmt);
	if (ret)
		return ret;
	vb2_set_plane_payload(vb, 0, pix_fmt->plane_fmt[0].sizeimage);
	return 0;
}

static void hantro_buf_queue(struct vb2_buffer *vb)
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);

	v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}

static bool hantro_vq_is_coded(struct vb2_queue *q)
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(q);

	return ctx->is_encoder != V4L2_TYPE_IS_OUTPUT(q->type);
}

static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(q);
	int ret = 0;

	if (V4L2_TYPE_IS_OUTPUT(q->type))
		ctx->sequence_out = 0;
	else
		ctx->sequence_cap = 0;

	if (hantro_vq_is_coded(q)) {
		enum hantro_codec_mode codec_mode;

		if (V4L2_TYPE_IS_OUTPUT(q->type))
			codec_mode = ctx->vpu_src_fmt->codec_mode;
		else
			codec_mode = ctx->vpu_dst_fmt->codec_mode;

		vpu_debug(4, "Codec mode = %d\n", codec_mode);
		ctx->codec_ops = &ctx->dev->variant->codec_ops[codec_mode];
		if (ctx->codec_ops->init) {
			ret = ctx->codec_ops->init(ctx);
			if (ret)
				return ret;
		}

		if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
			ret = hantro_postproc_alloc(ctx);
			if (ret)
				goto err_codec_exit;
		}
	}
	return ret;

err_codec_exit:
	if (ctx->codec_ops->exit)
		ctx->codec_ops->exit(ctx);
	return ret;
}

static void
hantro_return_bufs(struct vb2_queue *q,
		   struct vb2_v4l2_buffer *(*buf_remove)(struct v4l2_m2m_ctx *))
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(q);

	for (;;) {
		struct vb2_v4l2_buffer *vbuf;

		vbuf = buf_remove(ctx->fh.m2m_ctx);
		if (!vbuf)
			break;
		v4l2_ctrl_request_complete(vbuf->vb2_buf.req_obj.req,
					   &ctx->ctrl_handler);
		v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
	}
}

static void hantro_stop_streaming(struct vb2_queue *q)
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(q);

	if (hantro_vq_is_coded(q)) {
		hantro_postproc_free(ctx);
		if (ctx->codec_ops && ctx->codec_ops->exit)
			ctx->codec_ops->exit(ctx);
	}

	/*
	 * The mem2mem framework calls v4l2_m2m_cancel_job before
	 * .stop_streaming, so there isn't any job running and
	 * it is safe to return all the buffers.
	 */
	if (V4L2_TYPE_IS_OUTPUT(q->type))
		hantro_return_bufs(q, v4l2_m2m_src_buf_remove);
	else
		hantro_return_bufs(q, v4l2_m2m_dst_buf_remove);
}

static void hantro_buf_request_complete(struct vb2_buffer *vb)
{
	struct hantro_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);

	v4l2_ctrl_request_complete(vb->req_obj.req, &ctx->ctrl_handler);
}

static int hantro_buf_out_validate(struct vb2_buffer *vb)
{
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);

	vbuf->field = V4L2_FIELD_NONE;
	return 0;
}

const struct vb2_ops hantro_queue_ops = {
	.queue_setup = hantro_queue_setup,
	.buf_prepare = hantro_buf_prepare,
	.buf_queue = hantro_buf_queue,
	.buf_out_validate = hantro_buf_out_validate,
	.buf_request_complete = hantro_buf_request_complete,
	.start_streaming = hantro_start_streaming,
	.stop_streaming = hantro_stop_streaming,
	.wait_prepare = vb2_ops_wait_prepare,
	.wait_finish = vb2_ops_wait_finish,
};

Privacy Policy