root/drivers/staging/media/meson/vdec/vdec_helpers.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) 2018 BayLibre, SAS
   4  * Author: Maxime Jourdan <mjourdan@baylibre.com>
   5  */
   6 
   7 #ifndef __MESON_VDEC_HELPERS_H_
   8 #define __MESON_VDEC_HELPERS_H_
   9 
  10 #include "vdec.h"
  11 
  12 /**
  13  * amvdec_set_canvases() - Map VB2 buffers to canvases
  14  *
  15  * @sess: current session
  16  * @reg_base: Registry bases of where to write the canvas indexes
  17  * @reg_num: number of contiguous registers after each reg_base (including it)
  18  */
  19 int amvdec_set_canvases(struct amvdec_session *sess,
  20                         u32 reg_base[], u32 reg_num[]);
  21 
  22 /* Helpers to read/write to the various IPs (DOS, PARSER) */
  23 u32 amvdec_read_dos(struct amvdec_core *core, u32 reg);
  24 void amvdec_write_dos(struct amvdec_core *core, u32 reg, u32 val);
  25 void amvdec_write_dos_bits(struct amvdec_core *core, u32 reg, u32 val);
  26 void amvdec_clear_dos_bits(struct amvdec_core *core, u32 reg, u32 val);
  27 u32 amvdec_read_parser(struct amvdec_core *core, u32 reg);
  28 void amvdec_write_parser(struct amvdec_core *core, u32 reg, u32 val);
  29 
  30 /**
  31  * amvdec_dst_buf_done_idx() - Signal that a buffer is done decoding
  32  *
  33  * @sess: current session
  34  * @buf_idx: hardware buffer index
  35  * @offset: VIFIFO bitstream offset corresponding to the buffer
  36  * @field: V4L2 interlaced field
  37  */
  38 void amvdec_dst_buf_done_idx(struct amvdec_session *sess, u32 buf_idx,
  39                              u32 offset, u32 field);
  40 void amvdec_dst_buf_done(struct amvdec_session *sess,
  41                          struct vb2_v4l2_buffer *vbuf, u32 field);
  42 void amvdec_dst_buf_done_offset(struct amvdec_session *sess,
  43                                 struct vb2_v4l2_buffer *vbuf,
  44                                 u32 offset, u32 field, bool allow_drop);
  45 
  46 /**
  47  * amvdec_add_ts_reorder() - Add a timestamp to the list in chronological order
  48  *
  49  * @sess: current session
  50  * @ts: timestamp to add
  51  * @offset: offset in the VIFIFO where the associated packet was written
  52  */
  53 void amvdec_add_ts_reorder(struct amvdec_session *sess, u64 ts, u32 offset);
  54 void amvdec_remove_ts(struct amvdec_session *sess, u64 ts);
  55 
  56 /**
  57  * amvdec_set_par_from_dar() - Set Pixel Aspect Ratio from Display Aspect Ratio
  58  *
  59  * @sess: current session
  60  * @dar_num: numerator of the DAR
  61  * @dar_den: denominator of the DAR
  62  */
  63 void amvdec_set_par_from_dar(struct amvdec_session *sess,
  64                              u32 dar_num, u32 dar_den);
  65 
  66 /**
  67  * amvdec_src_change() - Notify new resolution/DPB size to the core
  68  *
  69  * @sess: current session
  70  * @width: picture width detected by the hardware
  71  * @height: picture height detected by the hardware
  72  * @dpb_size: Decoded Picture Buffer size (= amount of buffers for decoding)
  73  */
  74 void amvdec_src_change(struct amvdec_session *sess, u32 width,
  75                        u32 height, u32 dpb_size);
  76 
  77 /**
  78  * amvdec_abort() - Abort the current decoding session
  79  *
  80  * @sess: current session
  81  */
  82 void amvdec_abort(struct amvdec_session *sess);
  83 #endif