// SPDX-License-Identifier: MIT
/*
* Copyright © 2018 Intel Corp
*
* Author:
* Manasi Navare <manasi.d.navare@intel.com>
*/
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/byteorder/generic.h>
#include <drm/display/drm_dp_helper.h>
#include <drm/display/drm_dsc_helper.h>
#include <drm/drm_fixed.h>
#include <drm/drm_print.h>
/**
* DOC: dsc helpers
*
* VESA specification for DP 1.4 adds a new feature called Display Stream
* Compression (DSC) used to compress the pixel bits before sending it on
* DP/eDP/MIPI DSI interface. DSC is required to be enabled so that the existing
* display interfaces can support high resolutions at higher frames rates uisng
* the maximum available link capacity of these interfaces.
*
* These functions contain some common logic and helpers to deal with VESA
* Display Stream Compression standard required for DSC on Display Port/eDP or
* MIPI display interfaces.
*/
/**
* drm_dsc_dp_pps_header_init() - Initializes the PPS Header
* for DisplayPort as per the DP 1.4 spec.
* @pps_header: Secondary data packet header for DSC Picture
* Parameter Set as defined in &struct dp_sdp_header
*
* DP 1.4 spec defines the secondary data packet for sending the
* picture parameter infoframes from the source to the sink.
* This function populates the SDP header defined in
* &struct dp_sdp_header.
*/
void drm_dsc_dp_pps_header_init(struct dp_sdp_header *pps_header)
{
memset(pps_header, 0 , sizeof (*pps_header));
pps_header->HB1 = DP_SDP_PPS;
pps_header->HB2 = DP_SDP_PPS_HEADER_PAYLOAD_BYTES_MINUS_1;
}
EXPORT_SYMBOL(drm_dsc_dp_pps_header_init);
/**
* drm_dsc_dp_rc_buffer_size - get rc buffer size in bytes
* @rc_buffer_block_size: block size code, according to DPCD offset 62h
* @rc_buffer_size: number of blocks - 1, according to DPCD offset 63h
*
* return:
* buffer size in bytes, or 0 on invalid input
*/
int drm_dsc_dp_rc_buffer_size(u8 rc_buffer_block_size, u8 rc_buffer_size)
{
int size = 1024 * (rc_buffer_size + 1 );
switch (rc_buffer_block_size) {
case DP_DSC_RC_BUF_BLK_SIZE_1:
return 1 * size;
case DP_DSC_RC_BUF_BLK_SIZE_4:
return 4 * size;
case DP_DSC_RC_BUF_BLK_SIZE_16:
return 16 * size;
case DP_DSC_RC_BUF_BLK_SIZE_64:
return 64 * size;
default :
return 0 ;
}
}
EXPORT_SYMBOL(drm_dsc_dp_rc_buffer_size);
/**
* drm_dsc_pps_payload_pack() - Populates the DSC PPS
*
* @pps_payload:
* Bitwise struct for DSC Picture Parameter Set. This is defined
* by &struct drm_dsc_picture_parameter_set
* @dsc_cfg:
* DSC Configuration data filled by driver as defined by
* &struct drm_dsc_config
*
* DSC source device sends a picture parameter set (PPS) containing the
* information required by the sink to decode the compressed frame. Driver
* populates the DSC PPS struct using the DSC configuration parameters in
* the order expected by the DSC Display Sink device. For the DSC, the sink
* device expects the PPS payload in big endian format for fields
* that span more than 1 byte.
*/
void drm_dsc_pps_payload_pack(struct drm_dsc_picture_parameter_set *pps_payload,
const struct drm_dsc_config *dsc_cfg)
{
int i;
/* Protect against someone accidentally changing struct size */
BUILD_BUG_ON(sizeof (*pps_payload) !=
DP_SDP_PPS_HEADER_PAYLOAD_BYTES_MINUS_1 + 1 );
memset(pps_payload, 0 , sizeof (*pps_payload));
/* PPS 0 */
pps_payload->dsc_version =
dsc_cfg->dsc_version_minor |
dsc_cfg->dsc_version_major << DSC_PPS_VERSION_MAJOR_SHIFT;
/* PPS 1, 2 is 0 */
/* PPS 3 */
pps_payload->pps_3 =
dsc_cfg->line_buf_depth |
dsc_cfg->bits_per_component << DSC_PPS_BPC_SHIFT;
/* PPS 4 */
pps_payload->pps_4 =
((dsc_cfg->bits_per_pixel & DSC_PPS_BPP_HIGH_MASK) >>
DSC_PPS_MSB_SHIFT) |
dsc_cfg->vbr_enable << DSC_PPS_VBR_EN_SHIFT |
dsc_cfg->simple_422 << DSC_PPS_SIMPLE422_SHIFT |
dsc_cfg->convert_rgb << DSC_PPS_CONVERT_RGB_SHIFT |
dsc_cfg->block_pred_enable << DSC_PPS_BLOCK_PRED_EN_SHIFT;
/* PPS 5 */
pps_payload->bits_per_pixel_low =
(dsc_cfg->bits_per_pixel & DSC_PPS_LSB_MASK);
/*
* The DSC panel expects the PPS packet to have big endian format
* for data spanning 2 bytes. Use a macro cpu_to_be16() to convert
* to big endian format. If format is little endian, it will swap
* bytes to convert to Big endian else keep it unchanged.
*/
/* PPS 6, 7 */
pps_payload->pic_height = cpu_to_be16(dsc_cfg->pic_height);
/* PPS 8, 9 */
pps_payload->pic_width = cpu_to_be16(dsc_cfg->pic_width);
/* PPS 10, 11 */
pps_payload->slice_height = cpu_to_be16(dsc_cfg->slice_height);
/* PPS 12, 13 */
pps_payload->slice_width = cpu_to_be16(dsc_cfg->slice_width);
/* PPS 14, 15 */
pps_payload->chunk_size = cpu_to_be16(dsc_cfg->slice_chunk_size);
/* PPS 16 */
pps_payload->initial_xmit_delay_high =
((dsc_cfg->initial_xmit_delay &
DSC_PPS_INIT_XMIT_DELAY_HIGH_MASK) >>
DSC_PPS_MSB_SHIFT);
/* PPS 17 */
pps_payload->initial_xmit_delay_low =
(dsc_cfg->initial_xmit_delay & DSC_PPS_LSB_MASK);
/* PPS 18, 19 */
pps_payload->initial_dec_delay =
cpu_to_be16(dsc_cfg->initial_dec_delay);
/* PPS 20 is 0 */
/* PPS 21 */
pps_payload->initial_scale_value =
dsc_cfg->initial_scale_value;
/* PPS 22, 23 */
pps_payload->scale_increment_interval =
cpu_to_be16(dsc_cfg->scale_increment_interval);
/* PPS 24 */
pps_payload->scale_decrement_interval_high =
((dsc_cfg->scale_decrement_interval &
DSC_PPS_SCALE_DEC_INT_HIGH_MASK) >>
DSC_PPS_MSB_SHIFT);
/* PPS 25 */
pps_payload->scale_decrement_interval_low =
(dsc_cfg->scale_decrement_interval & DSC_PPS_LSB_MASK);
/* PPS 26[7:0], PPS 27[7:5] RESERVED */
/* PPS 27 */
pps_payload->first_line_bpg_offset =
dsc_cfg->first_line_bpg_offset;
/* PPS 28, 29 */
pps_payload->nfl_bpg_offset =
cpu_to_be16(dsc_cfg->nfl_bpg_offset);
/* PPS 30, 31 */
pps_payload->slice_bpg_offset =
cpu_to_be16(dsc_cfg->slice_bpg_offset);
/* PPS 32, 33 */
pps_payload->initial_offset =
cpu_to_be16(dsc_cfg->initial_offset);
/* PPS 34, 35 */
pps_payload->final_offset = cpu_to_be16(dsc_cfg->final_offset);
/* PPS 36 */
pps_payload->flatness_min_qp = dsc_cfg->flatness_min_qp;
/* PPS 37 */
pps_payload->flatness_max_qp = dsc_cfg->flatness_max_qp;
/* PPS 38, 39 */
pps_payload->rc_model_size = cpu_to_be16(dsc_cfg->rc_model_size);
/* PPS 40 */
pps_payload->rc_edge_factor = DSC_RC_EDGE_FACTOR_CONST;
/* PPS 41 */
pps_payload->rc_quant_incr_limit0 =
dsc_cfg->rc_quant_incr_limit0;
/* PPS 42 */
pps_payload->rc_quant_incr_limit1 =
dsc_cfg->rc_quant_incr_limit1;
/* PPS 43 */
pps_payload->rc_tgt_offset = DSC_RC_TGT_OFFSET_LO_CONST |
DSC_RC_TGT_OFFSET_HI_CONST << DSC_PPS_RC_TGT_OFFSET_HI_SHIFT;
/* PPS 44 - 57 */
for (i = 0 ; i < DSC_NUM_BUF_RANGES - 1 ; i++)
pps_payload->rc_buf_thresh[i] =
dsc_cfg->rc_buf_thresh[i];
/* PPS 58 - 87 */
/*
* For DSC sink programming the RC Range parameter fields
* are as follows: Min_qp[15:11], max_qp[10:6], offset[5:0]
*/
for (i = 0 ; i < DSC_NUM_BUF_RANGES; i++) {
pps_payload->rc_range_parameters[i] =
cpu_to_be16((dsc_cfg->rc_range_params[i].range_min_qp <<
DSC_PPS_RC_RANGE_MINQP_SHIFT) |
(dsc_cfg->rc_range_params[i].range_max_qp <<
DSC_PPS_RC_RANGE_MAXQP_SHIFT) |
(dsc_cfg->rc_range_params[i].range_bpg_offset));
}
/* PPS 88 */
pps_payload->native_422_420 = dsc_cfg->native_422 |
dsc_cfg->native_420 << DSC_PPS_NATIVE_420_SHIFT;
/* PPS 89 */
pps_payload->second_line_bpg_offset =
dsc_cfg->second_line_bpg_offset;
/* PPS 90, 91 */
pps_payload->nsl_bpg_offset =
cpu_to_be16(dsc_cfg->nsl_bpg_offset);
/* PPS 92, 93 */
pps_payload->second_line_offset_adj =
cpu_to_be16(dsc_cfg->second_line_offset_adj);
/* PPS 94 - 127 are O */
}
EXPORT_SYMBOL(drm_dsc_pps_payload_pack);
/**
* drm_dsc_set_const_params() - Set DSC parameters considered typically
* constant across operation modes
*
* @vdsc_cfg:
* DSC Configuration data partially filled by driver
*/
void drm_dsc_set_const_params(struct drm_dsc_config *vdsc_cfg)
{
if (!vdsc_cfg->rc_model_size)
vdsc_cfg->rc_model_size = DSC_RC_MODEL_SIZE_CONST;
vdsc_cfg->rc_edge_factor = DSC_RC_EDGE_FACTOR_CONST;
vdsc_cfg->rc_tgt_offset_high = DSC_RC_TGT_OFFSET_HI_CONST;
vdsc_cfg->rc_tgt_offset_low = DSC_RC_TGT_OFFSET_LO_CONST;
if (vdsc_cfg->bits_per_component <= 10 )
vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_8_10_BPC;
else
vdsc_cfg->mux_word_size = DSC_MUX_WORD_SIZE_12_BPC;
}
EXPORT_SYMBOL(drm_dsc_set_const_params);
/* From DSC_v1.11 spec, rc_parameter_Set syntax element typically constant */
static const u16 drm_dsc_rc_buf_thresh[] = {
896 , 1792 , 2688 , 3584 , 4480 , 5376 , 6272 , 6720 , 7168 , 7616 ,
7744 , 7872 , 8000 , 8064
};
/**
* drm_dsc_set_rc_buf_thresh() - Set thresholds for the RC model
* in accordance with the DSC 1.2 specification.
*
* @vdsc_cfg: DSC Configuration data partially filled by driver
*/
void drm_dsc_set_rc_buf_thresh(struct drm_dsc_config *vdsc_cfg)
{
int i;
BUILD_BUG_ON(ARRAY_SIZE(drm_dsc_rc_buf_thresh) !=
DSC_NUM_BUF_RANGES - 1 );
BUILD_BUG_ON(ARRAY_SIZE(drm_dsc_rc_buf_thresh) !=
ARRAY_SIZE(vdsc_cfg->rc_buf_thresh));
for (i = 0 ; i < ARRAY_SIZE(drm_dsc_rc_buf_thresh); i++)
vdsc_cfg->rc_buf_thresh[i] = drm_dsc_rc_buf_thresh[i] >> 6 ;
/*
* For 6bpp, RC Buffer threshold 12 and 13 need a different value
* as per C Model
*/
if (vdsc_cfg->bits_per_pixel == 6 << 4 ) {
vdsc_cfg->rc_buf_thresh[12 ] = 7936 >> 6 ;
vdsc_cfg->rc_buf_thresh[13 ] = 8000 >> 6 ;
}
}
EXPORT_SYMBOL(drm_dsc_set_rc_buf_thresh);
struct rc_parameters {
u16 initial_xmit_delay;
u8 first_line_bpg_offset;
u16 initial_offset;
u8 flatness_min_qp;
u8 flatness_max_qp;
u8 rc_quant_incr_limit0;
u8 rc_quant_incr_limit1;
struct drm_dsc_rc_range_parameters rc_range_params[DSC_NUM_BUF_RANGES];
};
struct rc_parameters_data {
u8 bpp;
u8 bpc;
struct rc_parameters params;
};
#define DSC_BPP(bpp) ((bpp) << 4 )
/*
* Rate Control Related Parameter Recommended Values from DSC_v1.1 spec prior
* to DSC 1.1 fractional bpp underflow SCR (DSC_v1.1_E1.pdf)
*
* Cross-checked against C Model releases: DSC_model_20161212 and 20210623
*/
static const struct rc_parameters_data rc_parameters_pre_scr[] = {
{
.bpp = DSC_BPP(6 ), .bpc = 8 ,
{ 683 , 15 , 6144 , 3 , 13 , 11 , 11 , {
{ 0 , 2 , 0 }, { 1 , 4 , -2 }, { 3 , 6 , -2 }, { 4 , 6 , -4 },
{ 5 , 7 , -6 }, { 5 , 7 , -6 }, { 6 , 7 , -6 }, { 6 , 8 , -8 },
{ 7 , 9 , -8 }, { 8 , 10 , -10 }, { 9 , 11 , -10 }, { 10 , 12 , -12 },
{ 10 , 13 , -12 }, { 12 , 14 , -12 }, { 15 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 8 ,
{ 512 , 12 , 6144 , 3 , 12 , 11 , 11 , {
{ 0 , 4 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 10 , -10 }, { 5 , 11 , -10 }, { 5 , 12 , -12 },
{ 5 , 13 , -12 }, { 7 , 13 , -12 }, { 13 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 10 ,
{ 512 , 12 , 6144 , 7 , 16 , 15 , 15 , {
/*
* DSC model/pre-SCR-cfg has 8 for range_max_qp[0], however
* VESA DSC 1.1 Table E-5 sets it to 4.
*/
{ 0 , 4 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 5 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 14 , -10 }, { 9 , 15 , -10 }, { 9 , 16 , -12 },
{ 9 , 17 , -12 }, { 11 , 17 , -12 }, { 17 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 12 ,
{ 512 , 12 , 6144 , 11 , 20 , 19 , 19 , {
{ 0 , 12 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 9 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 18 , -10 }, { 13 , 19 , -10 },
{ 13 , 20 , -12 }, { 13 , 21 , -12 }, { 15 , 21 , -12 },
{ 21 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 8 ,
{ 410 , 12 , 5632 , 3 , 12 , 11 , 11 , {
{ 0 , 3 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 2 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 9 , -10 }, { 5 , 10 , -10 }, { 5 , 11 , -10 },
{ 5 , 12 , -12 }, { 7 , 13 , -12 }, { 13 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 10 ,
{ 410 , 12 , 5632 , 7 , 16 , 15 , 15 , {
{ 0 , 7 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 6 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 13 , -10 }, { 9 , 14 , -10 }, { 9 , 15 , -10 },
{ 9 , 16 , -12 }, { 11 , 17 , -12 }, { 17 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 12 ,
{ 410 , 12 , 5632 , 11 , 20 , 19 , 19 , {
{ 0 , 11 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 10 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 17 , -10 }, { 13 , 18 , -10 },
{ 13 , 19 , -10 }, { 13 , 20 , -12 }, { 15 , 21 , -12 },
{ 21 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 8 ,
{ 341 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 2 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 10 , -10 }, { 5 , 11 , -10 },
{ 5 , 12 , -12 }, { 5 , 13 , -12 }, { 7 , 13 , -12 }, { 13 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 10 ,
{ 341 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 2 }, { 2 , 5 , 0 }, { 3 , 7 , 0 }, { 4 , 8 , -2 },
{ 6 , 9 , -4 }, { 7 , 10 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 14 , -10 }, { 9 , 15 , -10 }, { 9 , 16 , -12 },
{ 9 , 17 , -12 }, { 11 , 17 , -12 }, { 17 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 12 ,
{ 341 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 6 , 2 }, { 4 , 9 , 0 }, { 7 , 11 , 0 }, { 8 , 12 , -2 },
{ 10 , 13 , -4 }, { 11 , 14 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 18 , -10 }, { 13 , 19 , -10 },
{ 13 , 20 , -12 }, { 13 , 21 , -12 }, { 15 , 21 , -12 },
{ 21 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 8 ,
{ 273 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 0 , 10 }, { 0 , 1 , 8 }, { 0 , 1 , 6 }, { 0 , 2 , 4 },
{ 1 , 2 , 2 }, { 1 , 3 , 0 }, { 1 , 4 , -2 }, { 2 , 4 , -4 },
{ 3 , 4 , -6 }, { 3 , 5 , -8 }, { 4 , 6 , -10 }, { 5 , 7 , -10 },
{ 5 , 8 , -12 }, { 7 , 13 , -12 }, { 13 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 10 ,
{ 273 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 10 }, { 2 , 5 , 8 }, { 3 , 5 , 6 }, { 4 , 6 , 4 },
{ 5 , 6 , 2 }, { 5 , 7 , 0 }, { 5 , 8 , -2 }, { 6 , 8 , -4 },
{ 7 , 8 , -6 }, { 7 , 9 , -8 }, { 8 , 10 , -10 }, { 9 , 11 , -10 },
{ 9 , 12 , -12 }, { 11 , 17 , -12 }, { 17 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 12 ,
{ 273 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 4 , 10 }, { 2 , 7 , 8 }, { 4 , 9 , 6 }, { 6 , 11 , 4 },
{ 9 , 11 , 2 }, { 9 , 11 , 0 }, { 9 , 12 , -2 }, { 10 , 12 , -4 },
{ 11 , 12 , -6 }, { 11 , 13 , -8 }, { 12 , 14 , -10 },
{ 13 , 15 , -10 }, { 13 , 16 , -12 }, { 15 , 21 , -12 },
{ 21 , 23 , -12 }
}
}
},
{ /* sentinel */ }
};
/*
* Selected Rate Control Related Parameter Recommended Values from DSC v1.2, v1.2a, v1.2b and
* DSC_v1.1_E1 specs.
*
* Cross-checked against C Model releases: DSC_model_20161212 and 20210623
*/
static const struct rc_parameters_data rc_parameters_1_2_444[] = {
{
.bpp = DSC_BPP(6 ), .bpc = 8 ,
{ 768 , 15 , 6144 , 3 , 13 , 11 , 11 , {
{ 0 , 4 , 0 }, { 1 , 6 , -2 }, { 3 , 8 , -2 }, { 4 , 8 , -4 },
{ 5 , 9 , -6 }, { 5 , 9 , -6 }, { 6 , 9 , -6 }, { 6 , 10 , -8 },
{ 7 , 11 , -8 }, { 8 , 12 , -10 }, { 9 , 12 , -10 }, { 10 , 12 , -12 },
{ 10 , 12 , -12 }, { 11 , 12 , -12 }, { 13 , 14 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 10 ,
{ 768 , 15 , 6144 , 7 , 17 , 15 , 15 , {
{ 0 , 8 , 0 }, { 3 , 10 , -2 }, { 7 , 12 , -2 }, { 8 , 12 , -4 },
{ 9 , 13 , -6 }, { 9 , 13 , -6 }, { 10 , 13 , -6 }, { 10 , 14 , -8 },
{ 11 , 15 , -8 }, { 12 , 16 , -10 }, { 13 , 16 , -10 },
{ 14 , 16 , -12 }, { 14 , 16 , -12 }, { 15 , 16 , -12 },
{ 17 , 18 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 12 ,
{ 768 , 15 , 6144 , 11 , 21 , 19 , 19 , {
{ 0 , 12 , 0 }, { 5 , 14 , -2 }, { 11 , 16 , -2 }, { 12 , 16 , -4 },
{ 13 , 17 , -6 }, { 13 , 17 , -6 }, { 14 , 17 , -6 }, { 14 , 18 , -8 },
{ 15 , 19 , -8 }, { 16 , 20 , -10 }, { 17 , 20 , -10 },
{ 18 , 20 , -12 }, { 18 , 20 , -12 }, { 19 , 20 , -12 },
{ 21 , 22 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 14 ,
{ 768 , 15 , 6144 , 15 , 25 , 23 , 23 , {
{ 0 , 16 , 0 }, { 7 , 18 , -2 }, { 15 , 20 , -2 }, { 16 , 20 , -4 },
{ 17 , 21 , -6 }, { 17 , 21 , -6 }, { 18 , 21 , -6 }, { 18 , 22 , -8 },
{ 19 , 23 , -8 }, { 20 , 24 , -10 }, { 21 , 24 , -10 },
{ 22 , 24 , -12 }, { 22 , 24 , -12 }, { 23 , 24 , -12 },
{ 25 , 26 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 16 ,
{ 768 , 15 , 6144 , 19 , 29 , 27 , 27 , {
{ 0 , 20 , 0 }, { 9 , 22 , -2 }, { 19 , 24 , -2 }, { 20 , 24 , -4 },
{ 21 , 25 , -6 }, { 21 , 25 , -6 }, { 22 , 25 , -6 }, { 22 , 26 , -8 },
{ 23 , 27 , -8 }, { 24 , 28 , -10 }, { 25 , 28 , -10 },
{ 26 , 28 , -12 }, { 26 , 28 , -12 }, { 27 , 28 , -12 },
{ 29 , 30 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 8 ,
{ 512 , 12 , 6144 , 3 , 12 , 11 , 11 , {
{ 0 , 4 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 10 , -10 }, { 5 , 10 , -10 }, { 5 , 11 , -12 },
{ 5 , 11 , -12 }, { 9 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 10 ,
{ 512 , 12 , 6144 , 7 , 16 , 15 , 15 , {
{ 0 , 8 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 5 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 14 , -10 }, { 9 , 14 , -10 }, { 9 , 15 , -12 },
{ 9 , 15 , -12 }, { 13 , 16 , -12 }, { 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 12 ,
{ 512 , 12 , 6144 , 11 , 20 , 19 , 19 , {
{ 0 , 12 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 9 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 18 , -10 }, { 13 , 18 , -10 },
{ 13 , 19 , -12 }, { 13 , 19 , -12 }, { 17 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 14 ,
{ 512 , 12 , 6144 , 15 , 24 , 23 , 23 , {
{ 0 , 12 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 12 , 17 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 22 , -10 }, { 17 , 22 , -10 },
{ 17 , 23 , -12 }, { 17 , 23 , -12 }, { 21 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 16 ,
{ 512 , 12 , 6144 , 19 , 28 , 27 , 27 , {
{ 0 , 12 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 15 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 26 , -10 }, { 21 , 26 , -10 },
{ 21 , 27 , -12 }, { 21 , 27 , -12 }, { 25 , 28 , -12 },
{ 28 , 29 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 8 ,
{ 410 , 15 , 5632 , 3 , 12 , 11 , 11 , {
{ 0 , 3 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 2 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 9 , -10 }, { 5 , 10 , -10 }, { 5 , 10 , -10 },
{ 5 , 11 , -12 }, { 7 , 11 , -12 }, { 11 , 12 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 10 ,
{ 410 , 15 , 5632 , 7 , 16 , 15 , 15 , {
{ 0 , 7 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 6 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 13 , -10 }, { 9 , 14 , -10 }, { 9 , 14 , -10 },
{ 9 , 15 , -12 }, { 11 , 15 , -12 }, { 15 , 16 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 12 ,
{ 410 , 15 , 5632 , 11 , 20 , 19 , 19 , {
{ 0 , 11 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 10 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 17 , -10 }, { 13 , 18 , -10 },
{ 13 , 18 , -10 }, { 13 , 19 , -12 }, { 15 , 19 , -12 },
{ 19 , 20 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 14 ,
{ 410 , 15 , 5632 , 15 , 24 , 23 , 23 , {
{ 0 , 11 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 13 , 18 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 21 , -10 }, { 17 , 22 , -10 },
{ 17 , 22 , -10 }, { 17 , 23 , -12 }, { 19 , 23 , -12 },
{ 23 , 24 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 16 ,
{ 410 , 15 , 5632 , 19 , 28 , 27 , 27 , {
{ 0 , 11 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 16 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 25 , -10 }, { 21 , 26 , -10 },
{ 21 , 26 , -10 }, { 21 , 27 , -12 }, { 23 , 27 , -12 },
{ 27 , 28 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 8 ,
{ 341 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 2 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 8 , -8 }, { 3 , 9 , -10 }, { 5 , 9 , -10 }, { 5 , 9 , -12 },
{ 5 , 9 , -12 }, { 7 , 10 , -12 }, { 10 , 11 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 10 ,
{ 341 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 2 }, { 2 , 5 , 0 }, { 3 , 7 , 0 }, { 4 , 8 , -2 },
{ 6 , 9 , -4 }, { 7 , 10 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 12 , -8 }, { 7 , 13 , -10 }, { 9 , 13 , -10 }, { 9 , 13 , -12 },
{ 9 , 13 , -12 }, { 11 , 14 , -12 }, { 14 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 12 ,
{ 341 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 6 , 2 }, { 4 , 9 , 0 }, { 7 , 11 , 0 }, { 8 , 12 , -2 },
{ 10 , 13 , -4 }, { 11 , 14 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 16 , -8 }, { 11 , 17 , -10 }, { 13 , 17 , -10 },
{ 13 , 17 , -12 }, { 13 , 17 , -12 }, { 15 , 18 , -12 },
{ 18 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 14 ,
{ 341 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 6 , 2 }, { 7 , 10 , 0 }, { 9 , 13 , 0 }, { 11 , 16 , -2 },
{ 14 , 17 , -4 }, { 15 , 18 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 20 , -8 }, { 15 , 21 , -10 }, { 17 , 21 , -10 },
{ 17 , 21 , -12 }, { 17 , 21 , -12 }, { 19 , 22 , -12 },
{ 22 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(12 ), .bpc = 16 ,
{ 341 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 6 , 2 }, { 6 , 11 , 0 }, { 11 , 15 , 0 }, { 14 , 18 , -2 },
{ 18 , 21 , -4 }, { 19 , 22 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 24 , -8 }, { 19 , 25 , -10 }, { 21 , 25 , -10 },
{ 21 , 25 , -12 }, { 21 , 25 , -12 }, { 23 , 26 , -12 },
{ 26 , 27 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 8 ,
{ 273 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 0 , 10 }, { 0 , 1 , 8 }, { 0 , 1 , 6 }, { 0 , 2 , 4 },
{ 1 , 2 , 2 }, { 1 , 3 , 0 }, { 1 , 3 , -2 }, { 2 , 4 , -4 },
{ 2 , 5 , -6 }, { 3 , 5 , -8 }, { 4 , 6 , -10 }, { 4 , 7 , -10 },
{ 5 , 7 , -12 }, { 7 , 8 , -12 }, { 8 , 9 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 10 ,
{ 273 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 10 }, { 2 , 5 , 8 }, { 3 , 5 , 6 }, { 4 , 6 , 4 },
{ 5 , 6 , 2 }, { 5 , 7 , 0 }, { 5 , 7 , -2 }, { 6 , 8 , -4 },
{ 6 , 9 , -6 }, { 7 , 9 , -8 }, { 8 , 10 , -10 }, { 8 , 11 , -10 },
{ 9 , 11 , -12 }, { 11 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 12 ,
{ 273 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 4 , 10 }, { 2 , 7 , 8 }, { 4 , 9 , 6 }, { 6 , 11 , 4 },
{ 9 , 11 , 2 }, { 9 , 11 , 0 }, { 9 , 12 , -2 }, { 10 , 12 , -4 },
{ 11 , 13 , -6 }, { 11 , 13 , -8 }, { 12 , 14 , -10 },
{ 13 , 15 , -10 }, { 13 , 15 , -12 }, { 15 , 16 , -12 },
{ 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 14 ,
{ 273 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 4 , 10 }, { 3 , 8 , 8 }, { 6 , 11 , 6 }, { 9 , 14 , 4 },
{ 13 , 15 , 2 }, { 13 , 15 , 0 }, { 13 , 16 , -2 }, { 14 , 16 , -4 },
{ 15 , 17 , -6 }, { 15 , 17 , -8 }, { 16 , 18 , -10 },
{ 17 , 19 , -10 }, { 17 , 19 , -12 }, { 19 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(15 ), .bpc = 16 ,
{ 273 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 4 , 10 }, { 4 , 9 , 8 }, { 8 , 13 , 6 }, { 12 , 17 , 4 },
{ 17 , 19 , 2 }, { 17 , 20 , 0 }, { 17 , 20 , -2 }, { 18 , 20 , -4 },
{ 19 , 21 , -6 }, { 19 , 21 , -8 }, { 20 , 22 , -10 },
{ 21 , 23 , -10 }, { 21 , 23 , -12 }, { 23 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{ /* sentinel */ }
};
/*
* Selected Rate Control Related Parameter Recommended Values for 4:2:2 from
* DSC v1.2, v1.2a, v1.2b
*
* Cross-checked against C Model releases: DSC_model_20161212 and 20210623
*/
static const struct rc_parameters_data rc_parameters_1_2_422[] = {
{
.bpp = DSC_BPP(6 ), .bpc = 8 ,
{ 512 , 15 , 6144 , 3 , 12 , 11 , 11 , {
{ 0 , 4 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 10 , -10 }, { 5 , 10 , -10 }, { 5 , 11 , -12 },
{ 5 , 11 , -12 }, { 9 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 10 ,
{ 512 , 15 , 6144 , 7 , 16 , 15 , 15 , {
{ 0 , 8 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 5 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 14 , -10 }, { 9 , 14 , -10 }, { 9 , 15 , -12 },
{ 9 , 15 , -12 }, { 13 , 16 , -12 }, { 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 12 ,
{ 512 , 15 , 6144 , 11 , 20 , 19 , 19 , {
{ 0 , 12 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 9 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 18 , -10 }, { 13 , 18 , -10 },
{ 13 , 19 , -12 }, { 13 , 19 , -12 }, { 17 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 14 ,
{ 512 , 15 , 6144 , 15 , 24 , 23 , 23 , {
{ 0 , 12 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 12 , 17 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 22 , -10 }, { 17 , 22 , -10 },
{ 17 , 23 , -12 }, { 17 , 23 , -12 }, { 21 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 16 ,
{ 512 , 15 , 6144 , 19 , 28 , 27 , 27 , {
{ 0 , 12 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 15 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 26 , -10 }, { 21 , 26 , -10 },
{ 21 , 27 , -12 }, { 21 , 27 , -12 }, { 25 , 28 , -12 },
{ 28 , 29 , -12 }
}
}
},
{
.bpp = DSC_BPP(7 ), .bpc = 8 ,
{ 410 , 15 , 5632 , 3 , 12 , 11 , 11 , {
{ 0 , 3 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 2 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 9 , -10 }, { 5 , 10 , -10 }, { 5 , 10 , -10 },
{ 5 , 11 , -12 }, { 7 , 11 , -12 }, { 11 , 12 , -12 }
}
}
},
{
.bpp = DSC_BPP(7 ), .bpc = 10 ,
{ 410 , 15 , 5632 , 7 , 16 , 15 , 15 , {
{ 0 , 7 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 6 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 13 , -10 }, { 9 , 14 , -10 }, { 9 , 14 , -10 },
{ 9 , 15 , -12 }, { 11 , 15 , -12 }, { 15 , 16 , -12 }
}
}
},
{
.bpp = DSC_BPP(7 ), .bpc = 12 ,
{ 410 , 15 , 5632 , 11 , 20 , 19 , 19 , {
{ 0 , 11 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 10 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 17 , -10 }, { 13 , 18 , -10 },
{ 13 , 18 , -10 }, { 13 , 19 , -12 }, { 15 , 19 , -12 },
{ 19 , 20 , -12 }
}
}
},
{
.bpp = DSC_BPP(7 ), .bpc = 14 ,
{ 410 , 15 , 5632 , 15 , 24 , 23 , 23 , {
{ 0 , 11 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 13 , 18 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 21 , -10 }, { 17 , 22 , -10 },
{ 17 , 22 , -10 }, { 17 , 23 , -12 }, { 19 , 23 , -12 },
{ 23 , 24 , -12 }
}
}
},
{
.bpp = DSC_BPP(7 ), .bpc = 16 ,
{ 410 , 15 , 5632 , 19 , 28 , 27 , 27 , {
{ 0 , 11 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 16 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 25 , -10 }, { 21 , 26 , -10 },
{ 21 , 26 , -10 }, { 21 , 27 , -12 }, { 23 , 27 , -12 },
{ 27 , 28 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 8 ,
{ 341 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 2 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 8 , -8 }, { 3 , 9 , -10 }, { 5 , 9 , -10 }, { 5 , 9 , -12 },
{ 5 , 9 , -12 }, { 7 , 10 , -12 }, { 10 , 11 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 10 ,
{ 341 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 2 }, { 2 , 5 , 0 }, { 3 , 7 , 0 }, { 4 , 8 , -2 },
{ 6 , 9 , -4 }, { 7 , 10 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 12 , -8 }, { 7 , 13 , -10 }, { 9 , 13 , -10 }, { 9 , 13 , -12 },
{ 9 , 13 , -12 }, { 11 , 14 , -12 }, { 14 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 12 ,
{ 341 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 6 , 2 }, { 4 , 9 , 0 }, { 7 , 11 , 0 }, { 8 , 12 , -2 },
{ 10 , 13 , -4 }, { 11 , 14 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 16 , -8 }, { 11 , 17 , -10 }, { 13 , 17 , -10 },
{ 13 , 17 , -12 }, { 13 , 17 , -12 }, { 15 , 18 , -12 },
{ 18 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 14 ,
{ 341 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 6 , 2 }, { 7 , 10 , 0 }, { 9 , 13 , 0 }, { 11 , 16 , -2 },
{ 14 , 17 , -4 }, { 15 , 18 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 20 , -8 }, { 15 , 21 , -10 }, { 17 , 21 , -10 },
{ 17 , 21 , -12 }, { 17 , 21 , -12 }, { 19 , 22 , -12 },
{ 22 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 16 ,
{ 341 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 6 , 2 }, { 6 , 11 , 0 }, { 11 , 15 , 0 }, { 14 , 18 , -2 },
{ 18 , 21 , -4 }, { 19 , 22 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 24 , -8 }, { 19 , 25 , -10 }, { 21 , 25 , -10 },
{ 21 , 25 , -12 }, { 21 , 25 , -12 }, { 23 , 26 , -12 },
{ 26 , 27 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 8 ,
{ 273 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 0 , 10 }, { 0 , 1 , 8 }, { 0 , 1 , 6 }, { 0 , 2 , 4 },
{ 1 , 2 , 2 }, { 1 , 3 , 0 }, { 1 , 3 , -2 }, { 2 , 4 , -4 },
{ 2 , 5 , -6 }, { 3 , 5 , -8 }, { 4 , 6 , -10 }, { 4 , 7 , -10 },
{ 5 , 7 , -12 }, { 7 , 8 , -12 }, { 8 , 9 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 10 ,
{ 273 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 10 }, { 2 , 5 , 8 }, { 3 , 5 , 6 }, { 4 , 6 , 4 },
{ 5 , 6 , 2 }, { 5 , 7 , 0 }, { 5 , 7 , -2 }, { 6 , 8 , -4 },
{ 6 , 9 , -6 }, { 7 , 9 , -8 }, { 8 , 10 , -10 }, { 8 , 11 , -10 },
{ 9 , 11 , -12 }, { 11 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 12 ,
{ 273 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 4 , 10 }, { 2 , 7 , 8 }, { 4 , 9 , 6 }, { 6 , 11 , 4 },
{ 9 , 11 , 2 }, { 9 , 11 , 0 }, { 9 , 12 , -2 }, { 10 , 12 , -4 },
{ 11 , 13 , -6 }, { 11 , 13 , -8 }, { 12 , 14 , -10 },
{ 13 , 15 , -10 }, { 13 , 15 , -12 }, { 15 , 16 , -12 },
{ 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 14 ,
{ 273 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 4 , 10 }, { 3 , 8 , 8 }, { 6 , 11 , 6 }, { 9 , 14 , 4 },
{ 13 , 15 , 2 }, { 13 , 15 , 0 }, { 13 , 16 , -2 }, { 14 , 16 , -4 },
{ 15 , 17 , -6 }, { 15 , 17 , -8 }, { 16 , 18 , -10 },
{ 17 , 19 , -10 }, { 17 , 19 , -12 }, { 19 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(10 ), .bpc = 16 ,
{ 273 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 4 , 10 }, { 4 , 9 , 8 }, { 8 , 13 , 6 }, { 12 , 17 , 4 },
{ 17 , 19 , 2 }, { 17 , 20 , 0 }, { 17 , 20 , -2 }, { 18 , 20 , -4 },
{ 19 , 21 , -6 }, { 19 , 21 , -8 }, { 20 , 22 , -10 },
{ 21 , 23 , -10 }, { 21 , 23 , -12 }, { 23 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{ /* sentinel */ }
};
/*
* Selected Rate Control Related Parameter Recommended Values for 4:2:2 from
* DSC v1.2, v1.2a, v1.2b
*
* Cross-checked against C Model releases: DSC_model_20161212 and 20210623
*/
static const struct rc_parameters_data rc_parameters_1_2_420[] = {
{
.bpp = DSC_BPP(4 ), .bpc = 8 ,
{ 512 , 12 , 6144 , 3 , 12 , 11 , 11 , {
{ 0 , 4 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 10 , -10 }, { 5 , 10 , -10 }, { 5 , 11 , -12 },
{ 5 , 11 , -12 }, { 9 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(4 ), .bpc = 10 ,
{ 512 , 12 , 6144 , 7 , 16 , 15 , 15 , {
{ 0 , 8 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 5 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 14 , -10 }, { 9 , 14 , -10 }, { 9 , 15 , -12 },
{ 9 , 15 , -12 }, { 13 , 16 , -12 }, { 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(4 ), .bpc = 12 ,
{ 512 , 12 , 6144 , 11 , 20 , 19 , 19 , {
{ 0 , 12 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 9 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 18 , -10 }, { 13 , 18 , -10 },
{ 13 , 19 , -12 }, { 13 , 19 , -12 }, { 17 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(4 ), .bpc = 14 ,
{ 512 , 12 , 6144 , 15 , 24 , 23 , 23 , {
{ 0 , 12 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 12 , 17 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 22 , -10 }, { 17 , 22 , -10 },
{ 17 , 23 , -12 }, { 17 , 23 , -12 }, { 21 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{
.bpp = DSC_BPP(4 ), .bpc = 16 ,
{ 512 , 12 , 6144 , 19 , 28 , 27 , 27 , {
{ 0 , 12 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 15 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 26 , -10 }, { 21 , 26 , -10 },
{ 21 , 27 , -12 }, { 21 , 27 , -12 }, { 25 , 28 , -12 },
{ 28 , 29 , -12 }
}
}
},
{
.bpp = DSC_BPP(5 ), .bpc = 8 ,
{ 410 , 15 , 5632 , 3 , 12 , 11 , 11 , {
{ 0 , 3 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 2 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 9 , -8 }, { 3 , 9 , -10 }, { 5 , 10 , -10 }, { 5 , 10 , -10 },
{ 5 , 11 , -12 }, { 7 , 11 , -12 }, { 11 , 12 , -12 }
}
}
},
{
.bpp = DSC_BPP(5 ), .bpc = 10 ,
{ 410 , 15 , 5632 , 7 , 16 , 15 , 15 , {
{ 0 , 7 , 2 }, { 4 , 8 , 0 }, { 5 , 9 , 0 }, { 6 , 10 , -2 },
{ 7 , 11 , -4 }, { 7 , 11 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 13 , -8 }, { 7 , 13 , -10 }, { 9 , 14 , -10 }, { 9 , 14 , -10 },
{ 9 , 15 , -12 }, { 11 , 15 , -12 }, { 15 , 16 , -12 }
}
}
},
{
.bpp = DSC_BPP(5 ), .bpc = 12 ,
{ 410 , 15 , 5632 , 11 , 20 , 19 , 19 , {
{ 0 , 11 , 2 }, { 4 , 12 , 0 }, { 9 , 13 , 0 }, { 10 , 14 , -2 },
{ 11 , 15 , -4 }, { 11 , 15 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 17 , -8 }, { 11 , 17 , -10 }, { 13 , 18 , -10 },
{ 13 , 18 , -10 }, { 13 , 19 , -12 }, { 15 , 19 , -12 },
{ 19 , 20 , -12 }
}
}
},
{
.bpp = DSC_BPP(5 ), .bpc = 14 ,
{ 410 , 15 , 5632 , 15 , 24 , 23 , 23 , {
{ 0 , 11 , 2 }, { 5 , 13 , 0 }, { 11 , 15 , 0 }, { 13 , 18 , -2 },
{ 15 , 19 , -4 }, { 15 , 19 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 21 , -8 }, { 15 , 21 , -10 }, { 17 , 22 , -10 },
{ 17 , 22 , -10 }, { 17 , 23 , -12 }, { 19 , 23 , -12 },
{ 23 , 24 , -12 }
}
}
},
{
.bpp = DSC_BPP(5 ), .bpc = 16 ,
{ 410 , 15 , 5632 , 19 , 28 , 27 , 27 , {
{ 0 , 11 , 2 }, { 6 , 14 , 0 }, { 13 , 17 , 0 }, { 16 , 20 , -2 },
{ 19 , 23 , -4 }, { 19 , 23 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 25 , -8 }, { 19 , 25 , -10 }, { 21 , 26 , -10 },
{ 21 , 26 , -10 }, { 21 , 27 , -12 }, { 23 , 27 , -12 },
{ 27 , 28 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 8 ,
{ 341 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 2 , 2 }, { 0 , 4 , 0 }, { 1 , 5 , 0 }, { 1 , 6 , -2 },
{ 3 , 7 , -4 }, { 3 , 7 , -6 }, { 3 , 7 , -8 }, { 3 , 8 , -8 },
{ 3 , 8 , -8 }, { 3 , 9 , -10 }, { 5 , 9 , -10 }, { 5 , 9 , -12 },
{ 5 , 9 , -12 }, { 7 , 10 , -12 }, { 10 , 12 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 10 ,
{ 341 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 2 }, { 2 , 5 , 0 }, { 3 , 7 , 0 }, { 4 , 8 , -2 },
{ 6 , 9 , -4 }, { 7 , 10 , -6 }, { 7 , 11 , -8 }, { 7 , 12 , -8 },
{ 7 , 12 , -8 }, { 7 , 13 , -10 }, { 9 , 13 , -10 }, { 9 , 13 , -12 },
{ 9 , 13 , -12 }, { 11 , 14 , -12 }, { 14 , 15 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 12 ,
{ 341 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 6 , 2 }, { 4 , 9 , 0 }, { 7 , 11 , 0 }, { 8 , 12 , -2 },
{ 10 , 13 , -4 }, { 11 , 14 , -6 }, { 11 , 15 , -8 }, { 11 , 16 , -8 },
{ 11 , 16 , -8 }, { 11 , 17 , -10 }, { 13 , 17 , -10 },
{ 13 , 17 , -12 }, { 13 , 17 , -12 }, { 15 , 18 , -12 },
{ 18 , 19 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 14 ,
{ 341 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 6 , 2 }, { 7 , 10 , 0 }, { 9 , 13 , 0 }, { 11 , 16 , -2 },
{ 14 , 17 , -4 }, { 15 , 18 , -6 }, { 15 , 19 , -8 }, { 15 , 20 , -8 },
{ 15 , 20 , -8 }, { 15 , 21 , -10 }, { 17 , 21 , -10 },
{ 17 , 21 , -12 }, { 17 , 21 , -12 }, { 19 , 22 , -12 },
{ 22 , 23 , -12 }
}
}
},
{
.bpp = DSC_BPP(6 ), .bpc = 16 ,
{ 341 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 6 , 2 }, { 6 , 11 , 0 }, { 11 , 15 , 0 }, { 14 , 18 , -2 },
{ 18 , 21 , -4 }, { 19 , 22 , -6 }, { 19 , 23 , -8 }, { 19 , 24 , -8 },
{ 19 , 24 , -8 }, { 19 , 25 , -10 }, { 21 , 25 , -10 },
{ 21 , 25 , -12 }, { 21 , 25 , -12 }, { 23 , 26 , -12 },
{ 26 , 27 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 8 ,
{ 256 , 15 , 2048 , 3 , 12 , 11 , 11 , {
{ 0 , 0 , 10 }, { 0 , 1 , 8 }, { 0 , 1 , 6 }, { 0 , 2 , 4 },
{ 1 , 2 , 2 }, { 1 , 3 , 0 }, { 1 , 3 , -2 }, { 2 , 4 , -4 },
{ 2 , 5 , -6 }, { 3 , 5 , -8 }, { 4 , 6 , -10 }, { 4 , 7 , -10 },
{ 5 , 7 , -12 }, { 7 , 8 , -12 }, { 8 , 9 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 10 ,
{ 256 , 15 , 2048 , 7 , 16 , 15 , 15 , {
{ 0 , 2 , 10 }, { 2 , 5 , 8 }, { 3 , 5 , 6 }, { 4 , 6 , 4 },
{ 5 , 6 , 2 }, { 5 , 7 , 0 }, { 5 , 7 , -2 }, { 6 , 8 , -4 },
{ 6 , 9 , -6 }, { 7 , 9 , -8 }, { 8 , 10 , -10 }, { 8 , 11 , -10 },
{ 9 , 11 , -12 }, { 11 , 12 , -12 }, { 12 , 13 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 12 ,
{ 256 , 15 , 2048 , 11 , 20 , 19 , 19 , {
{ 0 , 4 , 10 }, { 2 , 7 , 8 }, { 4 , 9 , 6 }, { 6 , 11 , 4 },
{ 9 , 11 , 2 }, { 9 , 11 , 0 }, { 9 , 12 , -2 }, { 10 , 12 , -4 },
{ 11 , 13 , -6 }, { 11 , 13 , -8 }, { 12 , 14 , -10 },
{ 13 , 15 , -10 }, { 13 , 15 , -12 }, { 15 , 16 , -12 },
{ 16 , 17 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 14 ,
{ 256 , 15 , 2048 , 15 , 24 , 23 , 23 , {
{ 0 , 4 , 10 }, { 3 , 8 , 8 }, { 6 , 11 , 6 }, { 9 , 14 , 4 },
{ 13 , 15 , 2 }, { 13 , 15 , 0 }, { 13 , 16 , -2 }, { 14 , 16 , -4 },
{ 15 , 17 , -6 }, { 15 , 17 , -8 }, { 16 , 18 , -10 },
{ 17 , 19 , -10 }, { 17 , 19 , -12 }, { 19 , 20 , -12 },
{ 20 , 21 , -12 }
}
}
},
{
.bpp = DSC_BPP(8 ), .bpc = 16 ,
{ 256 , 15 , 2048 , 19 , 28 , 27 , 27 , {
{ 0 , 4 , 10 }, { 4 , 9 , 8 }, { 8 , 13 , 6 }, { 12 , 17 , 4 },
{ 17 , 19 , 2 }, { 17 , 20 , 0 }, { 17 , 20 , -2 }, { 18 , 20 , -4 },
{ 19 , 21 , -6 }, { 19 , 21 , -8 }, { 20 , 22 , -10 },
{ 21 , 23 , -10 }, { 21 , 23 , -12 }, { 23 , 24 , -12 },
{ 24 , 25 , -12 }
}
}
},
{ /* sentinel */ }
};
static const struct rc_parameters *get_rc_params(const struct rc_parameters_data *rc_parameters,
u16 dsc_bpp,
u8 bits_per_component)
{
int i;
for (i = 0 ; rc_parameters[i].bpp; i++)
if (rc_parameters[i].bpp == dsc_bpp &&
rc_parameters[i].bpc == bits_per_component)
return &rc_parameters[i].params;
return NULL;
}
/**
* drm_dsc_setup_rc_params() - Set parameters and limits for RC model in
* accordance with the DSC 1.1 or 1.2 specification and DSC C Model
* Required bits_per_pixel and bits_per_component to be set before calling this
* function.
*
* @vdsc_cfg: DSC Configuration data partially filled by driver
* @type: operating mode and standard to follow
*
* Return: 0 or -error code in case of an error
*/
int drm_dsc_setup_rc_params(struct drm_dsc_config *vdsc_cfg, enum drm_dsc_params_type type)
{
const struct rc_parameters_data *data;
const struct rc_parameters *rc_params;
int i;
if (WARN_ON_ONCE(!vdsc_cfg->bits_per_pixel ||
!vdsc_cfg->bits_per_component))
return -EINVAL;
switch (type) {
case DRM_DSC_1_2_444:
data = rc_parameters_1_2_444;
break ;
case DRM_DSC_1_1_PRE_SCR:
data = rc_parameters_pre_scr;
break ;
case DRM_DSC_1_2_422:
data = rc_parameters_1_2_422;
break ;
case DRM_DSC_1_2_420:
data = rc_parameters_1_2_420;
break ;
default :
return -EINVAL;
}
rc_params = get_rc_params(data,
vdsc_cfg->bits_per_pixel,
vdsc_cfg->bits_per_component);
if (!rc_params)
return -EINVAL;
vdsc_cfg->first_line_bpg_offset = rc_params->first_line_bpg_offset;
vdsc_cfg->initial_xmit_delay = rc_params->initial_xmit_delay;
vdsc_cfg->initial_offset = rc_params->initial_offset;
vdsc_cfg->flatness_min_qp = rc_params->flatness_min_qp;
vdsc_cfg->flatness_max_qp = rc_params->flatness_max_qp;
vdsc_cfg->rc_quant_incr_limit0 = rc_params->rc_quant_incr_limit0;
vdsc_cfg->rc_quant_incr_limit1 = rc_params->rc_quant_incr_limit1;
for (i = 0 ; i < DSC_NUM_BUF_RANGES; i++) {
vdsc_cfg->rc_range_params[i].range_min_qp =
rc_params->rc_range_params[i].range_min_qp;
vdsc_cfg->rc_range_params[i].range_max_qp =
rc_params->rc_range_params[i].range_max_qp;
/*
* Range BPG Offset uses 2's complement and is only a 6 bits. So
* mask it to get only 6 bits.
*/
vdsc_cfg->rc_range_params[i].range_bpg_offset =
rc_params->rc_range_params[i].range_bpg_offset &
DSC_RANGE_BPG_OFFSET_MASK;
}
return 0 ;
}
EXPORT_SYMBOL(drm_dsc_setup_rc_params);
/**
* drm_dsc_compute_rc_parameters() - Write rate control
* parameters to the dsc configuration defined in
* &struct drm_dsc_config in accordance with the DSC 1.2
* specification. Some configuration fields must be present
* beforehand.
*
* @vdsc_cfg:
* DSC Configuration data partially filled by driver
*/
int drm_dsc_compute_rc_parameters(struct drm_dsc_config *vdsc_cfg)
{
unsigned long groups_per_line = 0 ;
unsigned long groups_total = 0 ;
unsigned long num_extra_mux_bits = 0 ;
unsigned long slice_bits = 0 ;
unsigned long hrd_delay = 0 ;
unsigned long final_scale = 0 ;
unsigned long rbs_min = 0 ;
if (vdsc_cfg->native_420 || vdsc_cfg->native_422) {
/* Number of groups used to code each line of a slice */
groups_per_line = DIV_ROUND_UP(vdsc_cfg->slice_width / 2 ,
DSC_RC_PIXELS_PER_GROUP);
/* chunksize in Bytes */
vdsc_cfg->slice_chunk_size = DIV_ROUND_UP(vdsc_cfg->slice_width / 2 *
vdsc_cfg->bits_per_pixel,
(8 * 16 ));
} else {
/* Number of groups used to code each line of a slice */
groups_per_line = DIV_ROUND_UP(vdsc_cfg->slice_width,
DSC_RC_PIXELS_PER_GROUP);
/* chunksize in Bytes */
vdsc_cfg->slice_chunk_size = DIV_ROUND_UP(vdsc_cfg->slice_width *
vdsc_cfg->bits_per_pixel,
(8 * 16 ));
}
if (vdsc_cfg->convert_rgb)
num_extra_mux_bits = 3 * (vdsc_cfg->mux_word_size +
(4 * vdsc_cfg->bits_per_component + 4 )
- 2 );
else if (vdsc_cfg->native_422)
num_extra_mux_bits = 4 * vdsc_cfg->mux_word_size +
(4 * vdsc_cfg->bits_per_component + 4 ) +
3 * (4 * vdsc_cfg->bits_per_component) - 2 ;
else
num_extra_mux_bits = 3 * vdsc_cfg->mux_word_size +
(4 * vdsc_cfg->bits_per_component + 4 ) +
2 * (4 * vdsc_cfg->bits_per_component) - 2 ;
/* Number of bits in one Slice */
slice_bits = 8 * vdsc_cfg->slice_chunk_size * vdsc_cfg->slice_height;
while ((num_extra_mux_bits > 0 ) &&
((slice_bits - num_extra_mux_bits) % vdsc_cfg->mux_word_size))
num_extra_mux_bits--;
if (groups_per_line < vdsc_cfg->initial_scale_value - 8 )
vdsc_cfg->initial_scale_value = groups_per_line + 8 ;
/* scale_decrement_interval calculation according to DSC spec 1.11 */
if (vdsc_cfg->initial_scale_value > 8 )
vdsc_cfg->scale_decrement_interval = groups_per_line /
(vdsc_cfg->initial_scale_value - 8 );
else
vdsc_cfg->scale_decrement_interval = DSC_SCALE_DECREMENT_INTERVAL_MAX;
vdsc_cfg->final_offset = vdsc_cfg->rc_model_size -
(vdsc_cfg->initial_xmit_delay *
vdsc_cfg->bits_per_pixel + 8 ) / 16 + num_extra_mux_bits;
if (vdsc_cfg->final_offset >= vdsc_cfg->rc_model_size) {
DRM_DEBUG_KMS("FinalOfs < RcModelSze for this InitialXmitDelay\n" );
return -ERANGE;
}
final_scale = (vdsc_cfg->rc_model_size * 8 ) /
(vdsc_cfg->rc_model_size - vdsc_cfg->final_offset);
if (vdsc_cfg->slice_height > 1 )
/*
* NflBpgOffset is 16 bit value with 11 fractional bits
* hence we multiply by 2^11 for preserving the
* fractional part
*/
vdsc_cfg->nfl_bpg_offset = DIV_ROUND_UP((vdsc_cfg->first_line_bpg_offset << 11 ),
(vdsc_cfg->slice_height - 1 ));
else
vdsc_cfg->nfl_bpg_offset = 0 ;
/* Number of groups used to code the entire slice */
groups_total = groups_per_line * vdsc_cfg->slice_height;
/* slice_bpg_offset is 16 bit value with 11 fractional bits */
vdsc_cfg->slice_bpg_offset = DIV_ROUND_UP(((vdsc_cfg->rc_model_size -
vdsc_cfg->initial_offset +
num_extra_mux_bits) << 11 ),
groups_total);
if (final_scale > 9 ) {
/*
* ScaleIncrementInterval =
* finaloffset/((NflBpgOffset + SliceBpgOffset)*8(finalscale - 1.125))
* as (NflBpgOffset + SliceBpgOffset) has 11 bit fractional value,
* we need divide by 2^11 from pstDscCfg values
*/
vdsc_cfg->scale_increment_interval =
(vdsc_cfg->final_offset * (1 << 11 )) /
((vdsc_cfg->nfl_bpg_offset +
vdsc_cfg->slice_bpg_offset) *
(final_scale - 9 ));
} else {
/*
* If finalScaleValue is less than or equal to 9, a value of 0 should
* be used to disable the scale increment at the end of the slice
*/
vdsc_cfg->scale_increment_interval = 0 ;
}
/*
* DSC spec mentions that bits_per_pixel specifies the target
* bits/pixel (bpp) rate that is used by the encoder,
* in steps of 1/16 of a bit per pixel
*/
rbs_min = vdsc_cfg->rc_model_size - vdsc_cfg->initial_offset +
DIV_ROUND_UP(vdsc_cfg->initial_xmit_delay *
vdsc_cfg->bits_per_pixel, 16 ) +
groups_per_line * vdsc_cfg->first_line_bpg_offset;
hrd_delay = DIV_ROUND_UP((rbs_min * 16 ), vdsc_cfg->bits_per_pixel);
vdsc_cfg->rc_bits = (hrd_delay * vdsc_cfg->bits_per_pixel) / 16 ;
vdsc_cfg->initial_dec_delay = hrd_delay - vdsc_cfg->initial_xmit_delay;
return 0 ;
}
EXPORT_SYMBOL(drm_dsc_compute_rc_parameters);
/**
* drm_dsc_get_bpp_int() - Get integer bits per pixel value for the given DRM DSC config
* @vdsc_cfg: Pointer to DRM DSC config struct
*
* Return: Integer BPP value
*/
u32 drm_dsc_get_bpp_int(const struct drm_dsc_config *vdsc_cfg)
{
WARN_ON_ONCE(vdsc_cfg->bits_per_pixel & 0 xf);
return vdsc_cfg->bits_per_pixel >> 4 ;
}
EXPORT_SYMBOL(drm_dsc_get_bpp_int);
/**
* drm_dsc_initial_scale_value() - Calculate the initial scale value for the given DSC config
* @dsc: Pointer to DRM DSC config struct
*
* Return: Calculated initial scale value
*/
u8 drm_dsc_initial_scale_value(const struct drm_dsc_config *dsc)
{
return 8 * dsc->rc_model_size / (dsc->rc_model_size - dsc->initial_offset);
}
EXPORT_SYMBOL(drm_dsc_initial_scale_value);
/**
* drm_dsc_flatness_det_thresh() - Calculate the flatness_det_thresh for the given DSC config
* @dsc: Pointer to DRM DSC config struct
*
* Return: Calculated flatness det thresh value
*/
u32 drm_dsc_flatness_det_thresh(const struct drm_dsc_config *dsc)
{
return 2 << (dsc->bits_per_component - 8 );
}
EXPORT_SYMBOL(drm_dsc_flatness_det_thresh);
static void drm_dsc_dump_config_main_params(struct drm_printer *p, int indent,
const struct drm_dsc_config *cfg)
{
drm_printf_indent(p, indent,
"dsc-cfg: version: %d.%d, picture: w=%d, h=%d, slice: count=%d, w=%d, h=%d, size=%d\n" ,
cfg->dsc_version_major, cfg->dsc_version_minor,
cfg->pic_width, cfg->pic_height,
cfg->slice_count, cfg->slice_width, cfg->slice_height, cfg->slice_chunk_size);
drm_printf_indent(p, indent,
"dsc-cfg: mode: block-pred=%s, vbr=%s, rgb=%s, simple-422=%s, native-422=%s, native-420=%s\n" ,
str_yes_no(cfg->block_pred_enable), str_yes_no(cfg->vbr_enable),
str_yes_no(cfg->convert_rgb),
str_yes_no(cfg->simple_422), str_yes_no(cfg->native_422), str_yes_no(cfg->native_420));
drm_printf_indent(p, indent,
"dsc-cfg: color-depth: uncompressed-bpc=%d, compressed-bpp=" FXP_Q4_FMT " line-buf-bpp=%d\n" ,
cfg->bits_per_component, FXP_Q4_ARGS(cfg->bits_per_pixel), cfg->line_buf_depth);
drm_printf_indent(p, indent,
"dsc-cfg: rc-model: size=%d, bits=%d, mux-word-size: %d, initial-delays: xmit=%d, dec=%d\n" ,
cfg->rc_model_size, cfg->rc_bits, cfg->mux_word_size,
cfg->initial_xmit_delay, cfg->initial_dec_delay);
drm_printf_indent(p, indent,
"dsc-cfg: offsets: initial=%d, final=%d, slice-bpg=%d\n" ,
cfg->initial_offset, cfg->final_offset, cfg->slice_bpg_offset);
drm_printf_indent(p, indent,
"dsc-cfg: line-bpg-offsets: first=%d, non-first=%d, second=%d, non-second=%d, second-adj=%d\n" ,
cfg->first_line_bpg_offset, cfg->nfl_bpg_offset,
cfg->second_line_bpg_offset, cfg->nsl_bpg_offset, cfg->second_line_offset_adj);
drm_printf_indent(p, indent,
"dsc-cfg: rc-tgt-offsets: low=%d, high=%d, rc-edge-factor: %d, rc-quant-incr-limits: [0]=%d, [1]=%d\n" ,
cfg->rc_tgt_offset_low, cfg->rc_tgt_offset_high,
cfg->rc_edge_factor, cfg->rc_quant_incr_limit0, cfg->rc_quant_incr_limit1);
drm_printf_indent(p, indent,
"dsc-cfg: initial-scale: %d, scale-intervals: increment=%d, decrement=%d\n" ,
cfg->initial_scale_value, cfg->scale_increment_interval, cfg->scale_decrement_interval);
drm_printf_indent(p, indent,
"dsc-cfg: flatness: min-qp=%d, max-qp=%d\n" ,
cfg->flatness_min_qp, cfg->flatness_max_qp);
}
static void drm_dsc_dump_config_rc_params(struct drm_printer *p, int indent,
const struct drm_dsc_config *cfg)
{
const u16 *bt = cfg->rc_buf_thresh;
const struct drm_dsc_rc_range_parameters *rp = cfg->rc_range_params;
BUILD_BUG_ON(ARRAY_SIZE(cfg->rc_buf_thresh) != 14 );
BUILD_BUG_ON(ARRAY_SIZE(cfg->rc_range_params) != 15 );
drm_printf_indent(p, indent,
"dsc-cfg: rc-level: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14\n" );
drm_printf_indent(p, indent,
"dsc-cfg: rc-buf-thresh: %3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d\n" ,
bt[0 ], bt[1 ], bt[2 ], bt[3 ], bt[4 ], bt[5 ], bt[6 ], bt[7 ],
bt[8 ], bt[9 ], bt[10 ], bt[11 ], bt[12 ], bt[13 ]);
drm_printf_indent(p, indent,
"dsc-cfg: rc-min-qp: %3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d\n" ,
rp[0 ].range_min_qp, rp[1 ].range_min_qp, rp[2 ].range_min_qp, rp[3 ].range_min_qp,
rp[4 ].range_min_qp, rp[5 ].range_min_qp, rp[6 ].range_min_qp, rp[7 ].range_min_qp,
rp[8 ].range_min_qp, rp[9 ].range_min_qp, rp[10 ].range_min_qp, rp[11 ].range_min_qp,
rp[12 ].range_min_qp, rp[13 ].range_min_qp, rp[14 ].range_min_qp);
drm_printf_indent(p, indent,
"dsc-cfg: rc-max-qp: %3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d\n" ,
rp[0 ].range_max_qp, rp[1 ].range_max_qp, rp[2 ].range_max_qp, rp[3 ].range_max_qp,
rp[4 ].range_max_qp, rp[5 ].range_max_qp, rp[6 ].range_max_qp, rp[7 ].range_max_qp,
rp[8 ].range_max_qp, rp[9 ].range_max_qp, rp[10 ].range_max_qp, rp[11 ].range_max_qp,
rp[12 ].range_max_qp, rp[13 ].range_max_qp, rp[14 ].range_max_qp);
drm_printf_indent(p, indent,
"dsc-cfg: rc-bpg-offset: %3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d,%3d\n" ,
rp[0 ].range_bpg_offset, rp[1 ].range_bpg_offset, rp[2 ].range_bpg_offset, rp[3 ].range_bpg_offset,
rp[4 ].range_bpg_offset, rp[5 ].range_bpg_offset, rp[6 ].range_bpg_offset, rp[7 ].range_bpg_offset,
rp[8 ].range_bpg_offset, rp[9 ].range_bpg_offset, rp[10 ].range_bpg_offset, rp[11 ].range_bpg_offset,
rp[12 ].range_bpg_offset, rp[13 ].range_bpg_offset, rp[14 ].range_bpg_offset);
}
/**
* drm_dsc_dump_config - Dump the provided DSC configuration
* @p: The printer used for output
* @indent: Tab indentation level (max 5)
* @cfg: DSC configuration to print
*
* Print the provided DSC configuration in @cfg.
*/
void drm_dsc_dump_config(struct drm_printer *p, int indent,
const struct drm_dsc_config *cfg)
{
drm_dsc_dump_config_main_params(p, indent, cfg);
drm_dsc_dump_config_rc_params(p, indent, cfg);
}
EXPORT_SYMBOL(drm_dsc_dump_config);
Messung V0.5 in Prozent C=97 H=89 G=93