linux/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp8_req_if.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2021 MediaTek Inc.
 * Author: Yunfei Dong <[email protected]>
 */

#include <linux/slab.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <uapi/linux/v4l2-controls.h>

#include "../mtk_vcodec_dec.h"
#include "../../common/mtk_vcodec_intr.h"
#include "../vdec_drv_base.h"
#include "../vdec_drv_if.h"
#include "../vdec_vpu_if.h"

/* Decoding picture buffer size (3 reference frames plus current frame) */
#define VP8_DPB_SIZE …

/* HW working buffer size (bytes) */
#define VP8_SEG_ID_SZ …
#define VP8_PP_WRAPY_SZ …
#define VP8_PP_WRAPC_SZ …
#define VP8_VLD_PRED_SZ …

/**
 * struct vdec_vp8_slice_info - decode misc information
 *
 * @vld_wrapper_dma:	vld wrapper dma address
 * @seg_id_buf_dma:	seg id dma address
 * @wrap_y_dma:	wrap y dma address
 * @wrap_c_dma:	wrap y dma address
 * @cur_y_fb_dma:	current plane Y frame buffer dma address
 * @cur_c_fb_dma:	current plane C frame buffer dma address
 * @bs_dma:		bitstream dma address
 * @bs_sz:		bitstream size
 * @resolution_changed:resolution change flag 1 - changed,  0 - not changed
 * @frame_header_type:	current frame header type
 * @crc:		used to check whether hardware's status is right
 * @reserved:		reserved, currently unused
 */
struct vdec_vp8_slice_info { … };

/**
 * struct vdec_vp8_slice_dpb_info  - vp8 reference information
 *
 * @y_dma_addr:	Y bitstream physical address
 * @c_dma_addr:	CbCr bitstream physical address
 * @reference_flag:	reference picture flag
 * @reserved:		64bit align
 */
struct vdec_vp8_slice_dpb_info { … };

/**
 * struct vdec_vp8_slice_vsi - VPU shared information
 *
 * @dec:		decoding information
 * @pic:		picture information
 * @vp8_dpb_info:	reference buffer information
 */
struct vdec_vp8_slice_vsi { … };

/**
 * struct vdec_vp8_slice_inst - VP8 decoder instance
 *
 * @seg_id_buf:	seg buffer
 * @wrap_y_buf:	wrapper y buffer
 * @wrap_c_buf:	wrapper c buffer
 * @vld_wrapper_buf:	vld wrapper buffer
 * @ctx:		V4L2 context
 * @vpu:		VPU instance for decoder
 * @vsi:		VPU share information
 */
struct vdec_vp8_slice_inst { … };

static void *vdec_vp8_slice_get_ctrl_ptr(struct mtk_vcodec_dec_ctx *ctx, int id)
{ … }

static void vdec_vp8_slice_get_pic_info(struct vdec_vp8_slice_inst *inst)
{ … }

static int vdec_vp8_slice_alloc_working_buf(struct vdec_vp8_slice_inst *inst)
{ … }

static void vdec_vp8_slice_free_working_buf(struct vdec_vp8_slice_inst *inst)
{ … }

static u64 vdec_vp8_slice_get_ref_by_ts(const struct v4l2_ctrl_vp8_frame *frame_header,
					int index)
{ … }

static int vdec_vp8_slice_get_decode_parameters(struct vdec_vp8_slice_inst *inst)
{ … }

static int vdec_vp8_slice_init(struct mtk_vcodec_dec_ctx *ctx)
{ … }

static int vdec_vp8_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
				 struct vdec_fb *fb, bool *res_chg)
{ … }

static int vdec_vp8_slice_get_param(void *h_vdec, enum vdec_get_param_type type, void *out)
{ … }

static void vdec_vp8_slice_deinit(void *h_vdec)
{ … }

const struct vdec_common_if vdec_vp8_slice_if = …;