// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2016 MediaTek Inc. * Author: PC Chen <[email protected]> */ #include <linux/module.h> #include <linux/slab.h> #include "../vdec_drv_if.h" #include "../mtk_vcodec_dec.h" #include "../../common/mtk_vcodec_intr.h" #include "../vdec_vpu_if.h" #include "../vdec_drv_base.h" #define NAL_NON_IDR_SLICE … #define NAL_IDR_SLICE … #define NAL_H264_PPS … #define NAL_TYPE(value) … #define BUF_PREDICTION_SZ … #define MB_UNIT_LEN … /* motion vector size (bytes) for every macro block */ #define HW_MB_STORE_SZ … #define H264_MAX_FB_NUM … #define HDR_PARSING_BUF_SZ … #define DEC_ERR_RET(ret) … #define H264_ERR_NOT_VALID … /** * struct h264_fb - h264 decode frame buffer information * @vdec_fb_va : virtual address of struct vdec_fb * @y_fb_dma : dma address of Y frame buffer (luma) * @c_fb_dma : dma address of C frame buffer (chroma) * @poc : picture order count of frame buffer * @reserved : for 8 bytes alignment */ struct h264_fb { … }; /** * struct h264_ring_fb_list - ring frame buffer list * @fb_list : frame buffer array * @read_idx : read index * @write_idx : write index * @count : buffer count in list * @reserved : for 8 bytes alignment */ struct h264_ring_fb_list { … }; /** * struct vdec_h264_dec_info - decode information * @dpb_sz : decoding picture buffer size * @resolution_changed : resolution change happen * @realloc_mv_buf : flag to notify driver to re-allocate mv buffer * @reserved : for 8 bytes alignment * @bs_dma : Input bit-stream buffer dma address * @y_fb_dma : Y frame buffer dma address * @c_fb_dma : C frame buffer dma address * @vdec_fb_va : VDEC frame buffer struct virtual address */ struct vdec_h264_dec_info { … }; /** * struct vdec_h264_vsi - shared memory for decode information exchange * between VPU and Host. * The memory is allocated by VPU then mapping to Host * in vpu_dec_init() and freed in vpu_dec_deinit() * by VPU. * AP-W/R : AP is writer/reader on this item * VPU-W/R: VPU is write/reader on this item * @hdr_buf : Header parsing buffer (AP-W, VPU-R) * @pred_buf_dma : HW working prediction buffer dma address (AP-W, VPU-R) * @mv_buf_dma : HW working motion vector buffer dma address (AP-W, VPU-R) * @list_free : free frame buffer ring list (AP-W/R, VPU-W) * @list_disp : display frame buffer ring list (AP-R, VPU-W) * @dec : decode information (AP-R, VPU-W) * @pic : picture information (AP-R, VPU-W) * @crop : crop information (AP-R, VPU-W) */ struct vdec_h264_vsi { … }; /** * struct vdec_h264_inst - h264 decoder instance * @num_nalu : how many nalus be decoded * @ctx : point to mtk_vcodec_dec_ctx * @pred_buf : HW working prediction buffer * @mv_buf : HW working motion vector buffer * @vpu : VPU instance * @vsi : VPU shared information */ struct vdec_h264_inst { … }; static unsigned int get_mv_buf_size(unsigned int width, unsigned int height) { … } static int allocate_prediction_buf(struct vdec_h264_inst *inst) { … } static void free_prediction_buf(struct vdec_h264_inst *inst) { … } static int alloc_mv_buf(struct vdec_h264_inst *inst, struct vdec_pic_info *pic) { … } static void free_mv_buf(struct vdec_h264_inst *inst) { … } static int check_list_validity(struct vdec_h264_inst *inst, bool disp_list) { … } static void put_fb_to_free(struct vdec_h264_inst *inst, struct vdec_fb *fb) { … } static void get_pic_info(struct vdec_h264_inst *inst, struct vdec_pic_info *pic) { … } static void get_crop_info(struct vdec_h264_inst *inst, struct v4l2_rect *cr) { … } static void get_dpb_size(struct vdec_h264_inst *inst, unsigned int *dpb_sz) { … } static int vdec_h264_init(struct mtk_vcodec_dec_ctx *ctx) { … } static void vdec_h264_deinit(void *h_vdec) { … } static int find_start_code(unsigned char *data, unsigned int data_sz) { … } static int vdec_h264_decode(void *h_vdec, struct mtk_vcodec_mem *bs, struct vdec_fb *fb, bool *res_chg) { … } static void vdec_h264_get_fb(struct vdec_h264_inst *inst, struct h264_ring_fb_list *list, bool disp_list, struct vdec_fb **out_fb) { … } static int vdec_h264_get_param(void *h_vdec, enum vdec_get_param_type type, void *out) { … } const struct vdec_common_if vdec_h264_if = …;
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