| /* |
| * Copyright (c) 2016 MediaTek Inc. |
| * Author: PC Chen <pc.chen@mediatek.com> |
| * Tiffany Lin <tiffany.lin@mediatek.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef _VDEC_DRV_IF_H_ |
| #define _VDEC_DRV_IF_H_ |
| |
| #include "mtk_vcodec_drv.h" |
| #include "mtk_vcodec_dec.h" |
| #include "mtk_vcodec_util.h" |
| |
| |
| /** |
| * struct vdec_fb_status - decoder frame buffer status |
| * @FB_ST_NORMAL : initial state |
| * @FB_ST_DISPLAY : frmae buffer is ready to be displayed |
| * @FB_ST_FREE : frame buffer is not used by decoder any more |
| */ |
| enum vdec_fb_status { |
| FB_ST_NORMAL = 0, |
| FB_ST_DISPLAY = (1 << 0), |
| FB_ST_FREE = (1 << 1) |
| }; |
| |
| /* For GET_PARAM_DISP_FRAME_BUFFER and GET_PARAM_FREE_FRAME_BUFFER, |
| * the caller does not own the returned buffer. The buffer will not be |
| * released before vdec_if_deinit. |
| * GET_PARAM_DISP_FRAME_BUFFER : get next displayable frame buffer, |
| * struct vdec_fb** |
| * GET_PARAM_FREE_FRAME_BUFFER : get non-referenced framebuffer, vdec_fb** |
| * GET_PARAM_PIC_INFO : get picture info, struct vdec_pic_info* |
| * GET_PARAM_CROP_INFO : get crop info, struct v4l2_crop* |
| * GET_PARAM_DPB_SIZE : get dpb size, unsigned int* |
| */ |
| enum vdec_get_param_type { |
| GET_PARAM_DISP_FRAME_BUFFER, |
| GET_PARAM_FREE_FRAME_BUFFER, |
| GET_PARAM_PIC_INFO, |
| GET_PARAM_CROP_INFO, |
| GET_PARAM_DPB_SIZE |
| }; |
| |
| /** |
| * struct vdec_fb_node - decoder frame buffer node |
| * @list : list to hold this node |
| * @fb : point to frame buffer (vdec_fb), fb could point to frame buffer and |
| * working buffer this is for maintain buffers in different state |
| */ |
| struct vdec_fb_node { |
| struct list_head list; |
| struct vdec_fb *fb; |
| }; |
| |
| /** |
| * vdec_if_init() - initialize decode driver |
| * @ctx : [in] v4l2 context |
| * @fourcc : [in] video format fourcc, V4L2_PIX_FMT_H264/VP8/VP9.. |
| */ |
| int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc); |
| |
| /** |
| * vdec_if_deinit() - deinitialize decode driver |
| * @ctx : [in] v4l2 context |
| * |
| */ |
| void vdec_if_deinit(struct mtk_vcodec_ctx *ctx); |
| |
| /** |
| * vdec_if_decode() - trigger decode |
| * @ctx : [in] v4l2 context |
| * @bs : [in] input bitstream |
| * @fb : [in] frame buffer to store decoded frame, when null menas parse |
| * header only |
| * @res_chg : [out] resolution change happens if current bs have different |
| * picture width/height |
| * Note: To flush the decoder when reaching EOF, set input bitstream as NULL. |
| * |
| * Return: 0 on success. -EIO on unrecoverable error. |
| */ |
| int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs, |
| struct vdec_fb *fb, bool *res_chg); |
| |
| /** |
| * vdec_if_get_param() - get driver's parameter |
| * @ctx : [in] v4l2 context |
| * @type : [in] input parameter type |
| * @out : [out] buffer to store query result |
| */ |
| int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type, |
| void *out); |
| |
| #endif |
