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0001 /*
0002  * Copyright 2021 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: AMD
0023  *
0024  */
0025 
0026 #include "rc_calc_fpu.h"
0027 
0028 #include "qp_tables.h"
0029 #include "amdgpu_dm/dc_fpu.h"
0030 
0031 #define table_hash(mode, bpc, max_min) ((mode << 16) | (bpc << 8) | max_min)
0032 
0033 #define MODE_SELECT(val444, val422, val420) \
0034     (cm == CM_444 || cm == CM_RGB) ? (val444) : (cm == CM_422 ? (val422) : (val420))
0035 
0036 
0037 #define TABLE_CASE(mode, bpc, max)   case (table_hash(mode, BPC_##bpc, max)): \
0038     table = qp_table_##mode##_##bpc##bpc_##max; \
0039     table_size = sizeof(qp_table_##mode##_##bpc##bpc_##max)/sizeof(*qp_table_##mode##_##bpc##bpc_##max); \
0040     break
0041 
0042 static int median3(int a, int b, int c)
0043 {
0044     if (a > b)
0045         swap(a, b);
0046     if (b > c)
0047         swap(b, c);
0048     if (a > b)
0049         swap(b, c);
0050 
0051     return b;
0052 }
0053 
0054 static double dsc_roundf(double num)
0055 {
0056     if (num < 0.0)
0057         num = num - 0.5;
0058     else
0059         num = num + 0.5;
0060 
0061     return (int)(num);
0062 }
0063 
0064 static void get_qp_set(qp_set qps, enum colour_mode cm, enum bits_per_comp bpc,
0065                enum max_min max_min, float bpp)
0066 {
0067     int mode = MODE_SELECT(444, 422, 420);
0068     int sel = table_hash(mode, bpc, max_min);
0069     int table_size = 0;
0070     int index;
0071     const struct qp_entry *table = NULL;
0072 
0073     // alias enum
0074     enum { min = DAL_MM_MIN, max = DAL_MM_MAX };
0075     switch (sel) {
0076         TABLE_CASE(444,  8, max);
0077         TABLE_CASE(444,  8, min);
0078         TABLE_CASE(444, 10, max);
0079         TABLE_CASE(444, 10, min);
0080         TABLE_CASE(444, 12, max);
0081         TABLE_CASE(444, 12, min);
0082         TABLE_CASE(422,  8, max);
0083         TABLE_CASE(422,  8, min);
0084         TABLE_CASE(422, 10, max);
0085         TABLE_CASE(422, 10, min);
0086         TABLE_CASE(422, 12, max);
0087         TABLE_CASE(422, 12, min);
0088         TABLE_CASE(420,  8, max);
0089         TABLE_CASE(420,  8, min);
0090         TABLE_CASE(420, 10, max);
0091         TABLE_CASE(420, 10, min);
0092         TABLE_CASE(420, 12, max);
0093         TABLE_CASE(420, 12, min);
0094     }
0095 
0096     if (!table)
0097         return;
0098 
0099     index = (bpp - table[0].bpp) * 2;
0100 
0101     /* requested size is bigger than the table */
0102     if (index >= table_size) {
0103         dm_error("ERROR: Requested rc_calc to find a bpp entry that exceeds the table size\n");
0104         return;
0105     }
0106 
0107     memcpy(qps, table[index].qps, sizeof(qp_set));
0108 }
0109 
0110 static void get_ofs_set(qp_set ofs, enum colour_mode mode, float bpp)
0111 {
0112     int   *p = ofs;
0113 
0114     if (mode == CM_444 || mode == CM_RGB) {
0115         *p++ = (bpp <=  6) ? (0) : ((((bpp >=  8) && (bpp <= 12))) ? (2) : ((bpp >= 15) ? (10) : ((((bpp > 6) && (bpp < 8))) ? (0 + dsc_roundf((bpp -  6) * (2 / 2.0))) : (2 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
0116         *p++ = (bpp <=  6) ? (-2) : ((((bpp >=  8) && (bpp <= 12))) ? (0) : ((bpp >= 15) ? (8) : ((((bpp > 6) && (bpp < 8))) ? (-2 + dsc_roundf((bpp -  6) * (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (8 / 3.0))))));
0117         *p++ = (bpp <=  6) ? (-2) : ((((bpp >=  8) && (bpp <= 12))) ? (0) : ((bpp >= 15) ? (6) : ((((bpp > 6) && (bpp < 8))) ? (-2 + dsc_roundf((bpp -  6) * (2 / 2.0))) : (0 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
0118         *p++ = (bpp <=  6) ? (-4) : ((((bpp >=  8) && (bpp <= 12))) ? (-2) : ((bpp >= 15) ? (4) : ((((bpp > 6) && (bpp < 8))) ? (-4 + dsc_roundf((bpp -  6) * (2 / 2.0))) : (-2 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
0119         *p++ = (bpp <=  6) ? (-6) : ((((bpp >=  8) && (bpp <= 12))) ? (-4) : ((bpp >= 15) ? (2) : ((((bpp > 6) && (bpp < 8))) ? (-6 + dsc_roundf((bpp -  6) * (2 / 2.0))) : (-4 + dsc_roundf((bpp - 12) * (6 / 3.0))))));
0120         *p++ = (bpp <= 12) ? (-6) : ((bpp >= 15) ? (0) : (-6 + dsc_roundf((bpp - 12) * (6 / 3.0))));
0121         *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-2) : (-8 + dsc_roundf((bpp - 12) * (6 / 3.0))));
0122         *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-4) : (-8 + dsc_roundf((bpp - 12) * (4 / 3.0))));
0123         *p++ = (bpp <= 12) ? (-8) : ((bpp >= 15) ? (-6) : (-8 + dsc_roundf((bpp - 12) * (2 / 3.0))));
0124         *p++ = (bpp <= 12) ? (-10) : ((bpp >= 15) ? (-8) : (-10 + dsc_roundf((bpp - 12) * (2 / 3.0))));
0125         *p++ = -10;
0126         *p++ = (bpp <=  6) ? (-12) : ((bpp >=  8) ? (-10) : (-12 + dsc_roundf((bpp -  6) * (2 / 2.0))));
0127         *p++ = -12;
0128         *p++ = -12;
0129         *p++ = -12;
0130     } else if (mode == CM_422) {
0131         *p++ = (bpp <=  8) ? (2) : ((bpp >= 10) ? (10) : (2 + dsc_roundf((bpp -  8) * (8 / 2.0))));
0132         *p++ = (bpp <=  8) ? (0) : ((bpp >= 10) ? (8) : (0 + dsc_roundf((bpp -  8) * (8 / 2.0))));
0133         *p++ = (bpp <=  8) ? (0) : ((bpp >= 10) ? (6) : (0 + dsc_roundf((bpp -  8) * (6 / 2.0))));
0134         *p++ = (bpp <=  8) ? (-2) : ((bpp >= 10) ? (4) : (-2 + dsc_roundf((bpp -  8) * (6 / 2.0))));
0135         *p++ = (bpp <=  8) ? (-4) : ((bpp >= 10) ? (2) : (-4 + dsc_roundf((bpp -  8) * (6 / 2.0))));
0136         *p++ = (bpp <=  8) ? (-6) : ((bpp >= 10) ? (0) : (-6 + dsc_roundf((bpp -  8) * (6 / 2.0))));
0137         *p++ = (bpp <=  8) ? (-8) : ((bpp >= 10) ? (-2) : (-8 + dsc_roundf((bpp -  8) * (6 / 2.0))));
0138         *p++ = (bpp <=  8) ? (-8) : ((bpp >= 10) ? (-4) : (-8 + dsc_roundf((bpp -  8) * (4 / 2.0))));
0139         *p++ = (bpp <=  8) ? (-8) : ((bpp >= 10) ? (-6) : (-8 + dsc_roundf((bpp -  8) * (2 / 2.0))));
0140         *p++ = (bpp <=  8) ? (-10) : ((bpp >= 10) ? (-8) : (-10 + dsc_roundf((bpp -  8) * (2 / 2.0))));
0141         *p++ = -10;
0142         *p++ = (bpp <=  6) ? (-12) : ((bpp >= 7) ? (-10) : (-12 + dsc_roundf((bpp -  6) * (2.0 / 1))));
0143         *p++ = -12;
0144         *p++ = -12;
0145         *p++ = -12;
0146     } else {
0147         *p++ = (bpp <=  6) ? (2) : ((bpp >=  8) ? (10) : (2 + dsc_roundf((bpp -  6) * (8 / 2.0))));
0148         *p++ = (bpp <=  6) ? (0) : ((bpp >=  8) ? (8) : (0 + dsc_roundf((bpp -  6) * (8 / 2.0))));
0149         *p++ = (bpp <=  6) ? (0) : ((bpp >=  8) ? (6) : (0 + dsc_roundf((bpp -  6) * (6 / 2.0))));
0150         *p++ = (bpp <=  6) ? (-2) : ((bpp >=  8) ? (4) : (-2 + dsc_roundf((bpp -  6) * (6 / 2.0))));
0151         *p++ = (bpp <=  6) ? (-4) : ((bpp >=  8) ? (2) : (-4 + dsc_roundf((bpp -  6) * (6 / 2.0))));
0152         *p++ = (bpp <=  6) ? (-6) : ((bpp >=  8) ? (0) : (-6 + dsc_roundf((bpp -  6) * (6 / 2.0))));
0153         *p++ = (bpp <=  6) ? (-8) : ((bpp >=  8) ? (-2) : (-8 + dsc_roundf((bpp -  6) * (6 / 2.0))));
0154         *p++ = (bpp <=  6) ? (-8) : ((bpp >=  8) ? (-4) : (-8 + dsc_roundf((bpp -  6) * (4 / 2.0))));
0155         *p++ = (bpp <=  6) ? (-8) : ((bpp >=  8) ? (-6) : (-8 + dsc_roundf((bpp -  6) * (2 / 2.0))));
0156         *p++ = (bpp <=  6) ? (-10) : ((bpp >=  8) ? (-8) : (-10 + dsc_roundf((bpp -  6) * (2 / 2.0))));
0157         *p++ = -10;
0158         *p++ = (bpp <=  4) ? (-12) : ((bpp >=  5) ? (-10) : (-12 + dsc_roundf((bpp -  4) * (2 / 1.0))));
0159         *p++ = -12;
0160         *p++ = -12;
0161         *p++ = -12;
0162     }
0163 }
0164 
0165 void _do_calc_rc_params(struct rc_params *rc,
0166         enum colour_mode cm,
0167         enum bits_per_comp bpc,
0168         u16 drm_bpp,
0169         bool is_navite_422_or_420,
0170         int slice_width,
0171         int slice_height,
0172         int minor_version)
0173 {
0174     float bpp;
0175     float bpp_group;
0176     float initial_xmit_delay_factor;
0177     int padding_pixels;
0178     int i;
0179 
0180     dc_assert_fp_enabled();
0181 
0182     bpp = ((float)drm_bpp / 16.0);
0183     /* in native_422 or native_420 modes, the bits_per_pixel is double the
0184      * target bpp (the latter is what calc_rc_params expects)
0185      */
0186     if (is_navite_422_or_420)
0187         bpp /= 2.0;
0188 
0189     rc->rc_quant_incr_limit0 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15 : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
0190     rc->rc_quant_incr_limit1 = ((bpc == BPC_8) ? 11 : (bpc == BPC_10 ? 15 : 19)) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
0191 
0192     bpp_group = MODE_SELECT(bpp, bpp * 2.0, bpp * 2.0);
0193 
0194     switch (cm) {
0195     case CM_420:
0196         rc->initial_fullness_offset = (bpp >=  6) ? (2048) : ((bpp <=  4) ? (6144) : ((((bpp >  4) && (bpp <=  5))) ? (6144 - dsc_roundf((bpp - 4) * (512))) : (5632 - dsc_roundf((bpp -  5) * (3584)))));
0197         rc->first_line_bpg_offset   = median3(0, (12 + (int) (0.09 *  min(34, slice_height - 8))), (int)((3 * bpc * 3) - (3 * bpp_group)));
0198         rc->second_line_bpg_offset  = median3(0, 12, (int)((3 * bpc * 3) - (3 * bpp_group)));
0199         break;
0200     case CM_422:
0201         rc->initial_fullness_offset = (bpp >=  8) ? (2048) : ((bpp <=  7) ? (5632) : (5632 - dsc_roundf((bpp - 7) * (3584))));
0202         rc->first_line_bpg_offset   = median3(0, (12 + (int) (0.09 *  min(34, slice_height - 8))), (int)((3 * bpc * 4) - (3 * bpp_group)));
0203         rc->second_line_bpg_offset  = 0;
0204         break;
0205     case CM_444:
0206     case CM_RGB:
0207         rc->initial_fullness_offset = (bpp >= 12) ? (2048) : ((bpp <=  8) ? (6144) : ((((bpp >  8) && (bpp <= 10))) ? (6144 - dsc_roundf((bpp - 8) * (512 / 2))) : (5632 - dsc_roundf((bpp - 10) * (3584 / 2)))));
0208         rc->first_line_bpg_offset   = median3(0, (12 + (int) (0.09 *  min(34, slice_height - 8))), (int)(((3 * bpc + (cm == CM_444 ? 0 : 2)) * 3) - (3 * bpp_group)));
0209         rc->second_line_bpg_offset  = 0;
0210         break;
0211     }
0212 
0213     initial_xmit_delay_factor = (cm == CM_444 || cm == CM_RGB) ? 1.0 : 2.0;
0214     rc->initial_xmit_delay = dsc_roundf(8192.0/2.0/bpp/initial_xmit_delay_factor);
0215 
0216     if (cm == CM_422 || cm == CM_420)
0217         slice_width /= 2;
0218 
0219     padding_pixels = ((slice_width % 3) != 0) ? (3 - (slice_width % 3)) * (rc->initial_xmit_delay / slice_width) : 0;
0220     if (3 * bpp_group >= (((rc->initial_xmit_delay + 2) / 3) * (3 + (cm == CM_422)))) {
0221         if ((rc->initial_xmit_delay + padding_pixels) % 3 == 1)
0222             rc->initial_xmit_delay++;
0223     }
0224 
0225     rc->flatness_min_qp     = ((bpc == BPC_8) ?  (3) : ((bpc == BPC_10) ? (7)  : (11))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
0226     rc->flatness_max_qp     = ((bpc == BPC_8) ? (12) : ((bpc == BPC_10) ? (16) : (20))) - ((minor_version == 1 && cm == CM_444) ? 1 : 0);
0227     rc->flatness_det_thresh = 2 << (bpc - 8);
0228 
0229     get_qp_set(rc->qp_min, cm, bpc, DAL_MM_MIN, bpp);
0230     get_qp_set(rc->qp_max, cm, bpc, DAL_MM_MAX, bpp);
0231     if (cm == CM_444 && minor_version == 1) {
0232         for (i = 0; i < QP_SET_SIZE; ++i) {
0233             rc->qp_min[i] = rc->qp_min[i] > 0 ? rc->qp_min[i] - 1 : 0;
0234             rc->qp_max[i] = rc->qp_max[i] > 0 ? rc->qp_max[i] - 1 : 0;
0235         }
0236     }
0237     get_ofs_set(rc->ofs, cm, bpp);
0238 
0239     /* fixed parameters */
0240     rc->rc_model_size    = 8192;
0241     rc->rc_edge_factor   = 6;
0242     rc->rc_tgt_offset_hi = 3;
0243     rc->rc_tgt_offset_lo = 3;
0244 
0245     rc->rc_buf_thresh[0] = 896;
0246     rc->rc_buf_thresh[1] = 1792;
0247     rc->rc_buf_thresh[2] = 2688;
0248     rc->rc_buf_thresh[3] = 3584;
0249     rc->rc_buf_thresh[4] = 4480;
0250     rc->rc_buf_thresh[5] = 5376;
0251     rc->rc_buf_thresh[6] = 6272;
0252     rc->rc_buf_thresh[7] = 6720;
0253     rc->rc_buf_thresh[8] = 7168;
0254     rc->rc_buf_thresh[9] = 7616;
0255     rc->rc_buf_thresh[10] = 7744;
0256     rc->rc_buf_thresh[11] = 7872;
0257     rc->rc_buf_thresh[12] = 8000;
0258     rc->rc_buf_thresh[13] = 8064;
0259 }
0260
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