include/media/mpeg2-ctrls.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * These are the MPEG2 state controls for use with stateless MPEG-2
   4  * codec drivers.
   5  *
   6  * It turns out that these structs are not stable yet and will undergo
   7  * more changes. So keep them private until they are stable and ready to
   8  * become part of the official public API.
   9  */
  10
  11 #ifndef _MPEG2_CTRLS_H_
  12 #define _MPEG2_CTRLS_H_
  13
  14 #define V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS          (V4L2_CID_MPEG_BASE+250)
  15 #define V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION          (V4L2_CID_MPEG_BASE+251)
  16
  17 /* enum v4l2_ctrl_type type values */
  18 #define V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS 0x0103
  19 #define V4L2_CTRL_TYPE_MPEG2_QUANTIZATION 0x0104
  20
  21 #define V4L2_MPEG2_PICTURE_CODING_TYPE_I        1
  22 #define V4L2_MPEG2_PICTURE_CODING_TYPE_P        2
  23 #define V4L2_MPEG2_PICTURE_CODING_TYPE_B        3
  24 #define V4L2_MPEG2_PICTURE_CODING_TYPE_D        4
  25
  26 struct v4l2_mpeg2_sequence {
  27         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Sequence header */
  28         __u16   horizontal_size;
  29         __u16   vertical_size;
  30         __u32   vbv_buffer_size;
  31
  32         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Sequence extension */
  33         __u16   profile_and_level_indication;
  34         __u8    progressive_sequence;
  35         __u8    chroma_format;
  36 };
  37
  38 struct v4l2_mpeg2_picture {
  39         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Picture header */
  40         __u8    picture_coding_type;
  41
  42         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Picture coding extension */
  43         __u8    f_code[2][2];
  44         __u8    intra_dc_precision;
  45         __u8    picture_structure;
  46         __u8    top_field_first;
  47         __u8    frame_pred_frame_dct;
  48         __u8    concealment_motion_vectors;
  49         __u8    q_scale_type;
  50         __u8    intra_vlc_format;
  51         __u8    alternate_scan;
  52         __u8    repeat_first_field;
  53         __u16   progressive_frame;
  54 };
  55
  56 struct v4l2_ctrl_mpeg2_slice_params {
  57         __u32   bit_size;
  58         __u32   data_bit_offset;
  59         __u64   backward_ref_ts;
  60         __u64   forward_ref_ts;
  61
  62         struct v4l2_mpeg2_sequence sequence;
  63         struct v4l2_mpeg2_picture picture;
  64
  65         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Slice */
  66         __u32   quantiser_scale_code;
  67 };
  68
  69 struct v4l2_ctrl_mpeg2_quantization {
  70         /* ISO/IEC 13818-2, ITU-T Rec. H.262: Quant matrix extension */
  71         __u8    load_intra_quantiser_matrix;
  72         __u8    load_non_intra_quantiser_matrix;
  73         __u8    load_chroma_intra_quantiser_matrix;
  74         __u8    load_chroma_non_intra_quantiser_matrix;
  75
  76         __u8    intra_quantiser_matrix[64];
  77         __u8    non_intra_quantiser_matrix[64];
  78         __u8    chroma_intra_quantiser_matrix[64];
  79         __u8    chroma_non_intra_quantiser_matrix[64];
  80 };
  81
  82 #endif