drivers/media/platform/qcom/venus/vdec_ctrls.c

Source file repositories/reference/linux-study-clean/drivers/media/platform/qcom/venus/vdec_ctrls.c

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/qcom/venus/vdec_ctrls.c
Extension
.c
Size
5693 bytes
Lines
190
Domain
Driver Families
Bucket
drivers/media
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
 * Copyright (C) 2017 Linaro Ltd.
 */
#include <linux/types.h>
#include <media/v4l2-ctrls.h>

#include "core.h"
#include "helpers.h"
#include "vdec.h"

static int vdec_op_s_ctrl(struct v4l2_ctrl *ctrl)
{
	struct venus_inst *inst = ctrl_to_inst(ctrl);
	struct vdec_controls *ctr = &inst->controls.dec;

	switch (ctrl->id) {
	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
		ctr->post_loop_deb_mode = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
		ctr->profile = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
		ctr->level = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
		ctr->display_delay = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY_ENABLE:
		ctr->display_delay_enable = ctrl->val;
		break;
	case V4L2_CID_MPEG_VIDEO_DEC_CONCEAL_COLOR:
		ctr->conceal_color = *ctrl->p_new.p_s64;
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

static int vdec_op_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
	struct venus_inst *inst = ctrl_to_inst(ctrl);
	struct vdec_controls *ctr = &inst->controls.dec;
	struct hfi_buffer_requirements bufreq;
	enum hfi_version ver = inst->core->res->hfi_version;
	u32 profile, level;
	int ret;

	switch (ctrl->id) {
	case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
	case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
	case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
	case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
		ret = venus_helper_get_profile_level(inst, &profile, &level);
		if (!ret)
			ctr->profile = profile;
		ctrl->val = ctr->profile;
		break;
	case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
	case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
	case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
		ret = venus_helper_get_profile_level(inst, &profile, &level);
		if (!ret)
			ctr->level = level;
		ctrl->val = ctr->level;
		break;
	case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
		ctrl->val = ctr->post_loop_deb_mode;
		break;
	case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
		ret = venus_helper_get_bufreq(inst, HFI_BUFFER_OUTPUT, &bufreq);
		if (!ret)
			ctrl->val = hfi_bufreq_get_count_min(&bufreq, ver);
		break;
	default:
		return -EINVAL;
	}

	return 0;
}

Annotation

Implementation Notes