linux/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_h264_req_common.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2022 MediaTek Inc.
 * Author: Yunfei Dong <[email protected]>
 */

#include "vdec_h264_req_common.h"

/* get used parameters for sps/pps */
#define GET_MTK_VDEC_FLAG(cond, flag) …
#define GET_MTK_VDEC_PARAM(param) …

void mtk_vdec_h264_get_ref_list(u8 *ref_list,
				const struct v4l2_h264_reference *v4l2_ref_list,
				int num_valid)
{ … }

void *mtk_vdec_h264_get_ctrl_ptr(struct mtk_vcodec_dec_ctx *ctx, int id)
{ … }

void mtk_vdec_h264_fill_dpb_info(struct mtk_vcodec_dec_ctx *ctx,
				 struct slice_api_h264_decode_param *decode_params,
				 struct mtk_h264_dpb_info *h264_dpb_info)
{ … }

void mtk_vdec_h264_copy_sps_params(struct mtk_h264_sps_param *dst_param,
				   const struct v4l2_ctrl_h264_sps *src_param)
{ … }

void mtk_vdec_h264_copy_pps_params(struct mtk_h264_pps_param *dst_param,
				   const struct v4l2_ctrl_h264_pps *src_param)
{ … }

void mtk_vdec_h264_copy_slice_hd_params(struct mtk_h264_slice_hd_param *dst_param,
					const struct v4l2_ctrl_h264_slice_params *src_param,
					const struct v4l2_ctrl_h264_decode_params *dec_param)
{ … }

void mtk_vdec_h264_copy_scaling_matrix(struct slice_api_h264_scaling_matrix *dst_matrix,
				       const struct v4l2_ctrl_h264_scaling_matrix *src_matrix)
{ … }

void
mtk_vdec_h264_copy_decode_params(struct slice_api_h264_decode_param *dst_params,
				 const struct v4l2_ctrl_h264_decode_params *src_params,
				 const struct v4l2_h264_dpb_entry dpb[V4L2_H264_NUM_DPB_ENTRIES])
{ … }

static bool mtk_vdec_h264_dpb_entry_match(const struct v4l2_h264_dpb_entry *a,
					  const struct v4l2_h264_dpb_entry *b)
{ … }

/*
 * Move DPB entries of dec_param that refer to a frame already existing in dpb
 * into the already existing slot in dpb, and move other entries into new slots.
 *
 * This function is an adaptation of the similarly-named function in
 * hantro_h264.c.
 */
void mtk_vdec_h264_update_dpb(const struct v4l2_ctrl_h264_decode_params *dec_param,
			      struct v4l2_h264_dpb_entry *dpb)
{ … }

unsigned int mtk_vdec_h264_get_mv_buf_size(unsigned int width, unsigned int height)
{ … }

int mtk_vdec_h264_find_start_code(unsigned char *data, unsigned int data_sz)
{ … }