From: Samson Tam <Samson.Tam@xxxxxxx> [Why] Tune settings for improved text display. Handle differences between DWM and MPO in HDR path. [How] Update sharpener LBA table. Use HDR multiplier to calculate scalar matrix coefficients for HDR RGB MPO path. Update unit tests. Reviewed-by: Jun Lei <jun.lei@xxxxxxx> Signed-off-by: Samson Tam <Samson.Tam@xxxxxxx> Signed-off-by: Zaeem Mohamed <zaeem.mohamed@xxxxxxx> --- .../gpu/drm/amd/display/dc/dc_spl_translate.c | 4 + drivers/gpu/drm/amd/display/dc/spl/Makefile | 2 +- drivers/gpu/drm/amd/display/dc/spl/dc_spl.c | 127 +++++++++++---- .../gpu/drm/amd/display/dc/spl/dc_spl_types.h | 2 + .../drm/amd/display/dc/spl/spl_custom_float.c | 151 ++++++++++++++++++ .../drm/amd/display/dc/spl/spl_custom_float.h | 29 ++++ 6 files changed, 282 insertions(+), 33 deletions(-) create mode 100644 drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.c create mode 100644 drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.h diff --git a/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c b/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c index 92ad0bac182c..75d00c6a38f4 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c +++ b/drivers/gpu/drm/amd/display/dc/dc_spl_translate.c @@ -179,6 +179,10 @@ void translate_SPL_in_params_from_pipe_ctx(struct pipe_ctx *pipe_ctx, struct spl */ spl_in->is_fullscreen = dm_helpers_is_fullscreen(pipe_ctx->stream->ctx, pipe_ctx->stream); spl_in->is_hdr_on = dm_helpers_is_hdr_on(pipe_ctx->stream->ctx, pipe_ctx->stream); + spl_in->hdr_multx100 = 0; + if (spl_in->is_hdr_on) + spl_in->hdr_multx100 = (uint32_t)dc_fixpt_floor(dc_fixpt_mul(plane_state->hdr_mult, + dc_fixpt_from_int(100))); } /// @brief Translate SPL output parameters to pipe context diff --git a/drivers/gpu/drm/amd/display/dc/spl/Makefile b/drivers/gpu/drm/amd/display/dc/spl/Makefile index 05764d4d4604..5edf3c6cf3e2 100644 --- a/drivers/gpu/drm/amd/display/dc/spl/Makefile +++ b/drivers/gpu/drm/amd/display/dc/spl/Makefile @@ -23,7 +23,7 @@ # Makefile for the 'spl' sub-component of DAL. # It provides the scaling library interface. -SPL = dc_spl.o dc_spl_scl_filters.o dc_spl_scl_easf_filters.o dc_spl_isharp_filters.o dc_spl_filters.o spl_fixpt31_32.o +SPL = dc_spl.o dc_spl_scl_filters.o dc_spl_scl_easf_filters.o dc_spl_isharp_filters.o dc_spl_filters.o spl_fixpt31_32.o spl_custom_float.o AMD_DAL_SPL = $(addprefix $(AMDDALPATH)/dc/spl/,$(SPL)) diff --git a/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c b/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c index f00bb2004d53..059d144bab85 100644 --- a/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c +++ b/drivers/gpu/drm/amd/display/dc/spl/dc_spl.c @@ -538,6 +538,14 @@ static bool spl_is_yuv420(enum spl_pixel_format format) return false; } +static bool spl_is_rgb8(enum spl_pixel_format format) +{ + if (format == SPL_PIXEL_FORMAT_ARGB8888) + return true; + + return false; +} + /*Calculate inits and viewport */ static void spl_calculate_inits_and_viewports(struct spl_in *spl_in, struct spl_scratch *spl_scratch) @@ -773,21 +781,12 @@ static bool enable_easf(struct spl_in *spl_in, struct spl_scratch *spl_scratch) bool skip_easf = false; bool lls_enable_easf = true; - /* - * If lls_pref is LLS_PREF_DONT_CARE, then use pixel format and transfer - * function to determine whether to use LINEAR or NONLINEAR scaling - */ - if (spl_in->lls_pref == LLS_PREF_DONT_CARE) - lls_enable_easf = spl_choose_lls_policy(spl_in->basic_in.format, - spl_in->basic_in.tf_type, spl_in->basic_in.tf_predefined_type, - &spl_in->lls_pref); + if (spl_in->disable_easf) + skip_easf = true; vratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.vert); hratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.horz); - if (!lls_enable_easf || spl_in->disable_easf) - skip_easf = true; - /* * No EASF support for downscaling > 2:1 * EASF support for upscaling or downscaling up to 2:1 @@ -795,6 +794,18 @@ static bool enable_easf(struct spl_in *spl_in, struct spl_scratch *spl_scratch) if ((vratio > 2) || (hratio > 2)) skip_easf = true; + /* + * If lls_pref is LLS_PREF_DONT_CARE, then use pixel format and transfer + * function to determine whether to use LINEAR or NONLINEAR scaling + */ + if (spl_in->lls_pref == LLS_PREF_DONT_CARE) + lls_enable_easf = spl_choose_lls_policy(spl_in->basic_in.format, + spl_in->basic_in.tf_type, spl_in->basic_in.tf_predefined_type, + &spl_in->lls_pref); + + if (!lls_enable_easf) + skip_easf = true; + /* Check for linear scaling or EASF preferred */ if (spl_in->lls_pref != LLS_PREF_YES && !spl_in->prefer_easf) skip_easf = true; @@ -819,13 +830,13 @@ static bool spl_get_isharp_en(struct spl_in *spl_in, struct spl_taps taps = spl_scratch->scl_data.taps; bool fullscreen = spl_is_video_fullscreen(spl_in); - vratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.vert); - hratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.horz); - /* Return if adaptive sharpness is disabled */ if (spl_in->adaptive_sharpness.enable == false) return enable_isharp; + vratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.vert); + hratio = spl_fixpt_ceil(spl_scratch->scl_data.ratios.horz); + /* No iSHARP support for downscaling */ if (vratio > 1 || hratio > 1) return enable_isharp; @@ -1154,10 +1165,44 @@ static void spl_set_dscl_prog_data(struct spl_in *spl_in, struct spl_scratch *sp spl_set_filters_data(dscl_prog_data, data, enable_easf_v, enable_easf_h); } +/* Calculate C0-C3 coefficients based on HDR_mult */ +static void spl_calculate_c0_c3_hdr(struct dscl_prog_data *dscl_prog_data, uint32_t hdr_multx100) +{ + struct spl_fixed31_32 hdr_mult, c0_mult, c1_mult, c2_mult; + struct spl_fixed31_32 c0_calc, c1_calc, c2_calc; + struct spl_custom_float_format fmt; + + SPL_ASSERT(hdr_multx100); + hdr_mult = spl_fixpt_from_fraction((long long)hdr_multx100, 100LL); + c0_mult = spl_fixpt_from_fraction(2126LL, 10000LL); + c1_mult = spl_fixpt_from_fraction(7152LL, 10000LL); + c2_mult = spl_fixpt_from_fraction(722LL, 10000LL); + + c0_calc = spl_fixpt_mul(hdr_mult, spl_fixpt_mul(c0_mult, spl_fixpt_from_fraction( + 16384LL, 125LL))); + c1_calc = spl_fixpt_mul(hdr_mult, spl_fixpt_mul(c1_mult, spl_fixpt_from_fraction( + 16384LL, 125LL))); + c2_calc = spl_fixpt_mul(hdr_mult, spl_fixpt_mul(c2_mult, spl_fixpt_from_fraction( + 16384LL, 125LL))); + + fmt.exponenta_bits = 5; + fmt.mantissa_bits = 10; + fmt.sign = true; + + // fp1.5.10, C0 coefficient (LN_rec709: HDR_MULT * 0.212600 * 2^14/125) + spl_convert_to_custom_float_format(c0_calc, &fmt, &dscl_prog_data->easf_matrix_c0); + // fp1.5.10, C1 coefficient (LN_rec709: HDR_MULT * 0.715200 * 2^14/125) + spl_convert_to_custom_float_format(c1_calc, &fmt, &dscl_prog_data->easf_matrix_c1); + // fp1.5.10, C2 coefficient (LN_rec709: HDR_MULT * 0.072200 * 2^14/125) + spl_convert_to_custom_float_format(c2_calc, &fmt, &dscl_prog_data->easf_matrix_c2); + dscl_prog_data->easf_matrix_c3 = 0x0; // fp1.5.10, C3 coefficient +} + /* Set EASF data */ static void spl_set_easf_data(struct spl_scratch *spl_scratch, struct spl_out *spl_out, bool enable_easf_v, bool enable_easf_h, enum linear_light_scaling lls_pref, - enum spl_pixel_format format, enum system_setup setup) + enum spl_pixel_format format, enum system_setup setup, + uint32_t hdr_multx100) { struct dscl_prog_data *dscl_prog_data = spl_out->dscl_prog_data; if (enable_easf_v) { @@ -1463,16 +1508,10 @@ static void spl_set_easf_data(struct spl_scratch *spl_scratch, struct spl_out *s if (lls_pref == LLS_PREF_YES) { dscl_prog_data->easf_ltonl_en = 1; // Linear input - if (setup == HDR_L) { - dscl_prog_data->easf_matrix_c0 = - 0x504E; // fp1.5.10, C0 coefficient (LN_BT2020: 0.2627 * (2^14)/125 = 34.43750000) - dscl_prog_data->easf_matrix_c1 = - 0x558E; // fp1.5.10, C1 coefficient (LN_BT2020: 0.6780 * (2^14)/125 = 88.87500000) - dscl_prog_data->easf_matrix_c2 = - 0x47C6; // fp1.5.10, C2 coefficient (LN_BT2020: 0.0593 * (2^14)/125 = 7.77343750) - dscl_prog_data->easf_matrix_c3 = - 0x0; // fp1.5.10, C3 coefficient - } else { // SDR_L + if ((setup == HDR_L) && (spl_is_rgb8(format))) { + /* Calculate C0-C3 coefficients based on HDR multiplier */ + spl_calculate_c0_c3_hdr(dscl_prog_data, hdr_multx100); + } else { // HDR_L ( DWM ) and SDR_L dscl_prog_data->easf_matrix_c0 = 0x4EF7; // fp1.5.10, C0 coefficient (LN_rec709: 0.2126 * (2^14)/125 = 27.86590720) dscl_prog_data->easf_matrix_c1 = @@ -1570,9 +1609,9 @@ static void spl_set_isharp_data(struct dscl_prog_data *dscl_prog_data, dscl_prog_data->isharp_lba.base_seg[1] = 63; // ISHARP LBA PWL for Seg 1. BASE value in U0.6 format dscl_prog_data->isharp_lba.slope_seg[1] = 0; // ISHARP LBA for Seg 1. SLOPE value in S5.3 format // ISHARP_LBA_PWL_SEG2: ISHARP LBA PWL Segment 2 - dscl_prog_data->isharp_lba.in_seg[2] = 312; // ISHARP LBA PWL for Seg 2. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.in_seg[2] = 450; // ISHARP LBA PWL for Seg 2. INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[2] = 63; // ISHARP LBA PWL for Seg 2. BASE value in U0.6 format - dscl_prog_data->isharp_lba.slope_seg[2] = 0x1D9; // ISHARP LBA for Seg 2. SLOPE value in S5.3 format = -39 + dscl_prog_data->isharp_lba.slope_seg[2] = 0x18D; // ISHARP LBA for Seg 2. SLOPE value in S5.3 format = -115 // ISHARP_LBA_PWL_SEG3: ISHARP LBA PWL Segment 3 dscl_prog_data->isharp_lba.in_seg[3] = 520; // ISHARP LBA PWL for Seg 3.INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[3] = 0; // ISHARP LBA PWL for Seg 3. BASE value in U0.6 format @@ -1584,19 +1623,43 @@ static void spl_set_isharp_data(struct dscl_prog_data *dscl_prog_data, // ISHARP_LBA_PWL_SEG5: ISHARP LBA PWL Segment 5 dscl_prog_data->isharp_lba.in_seg[5] = 520; // ISHARP LBA PWL for Seg 5.INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[5] = 0; // ISHARP LBA PWL for Seg 5. BASE value in U0.6 format - } else { + } else if (setup == HDR_L) { // ISHARP_LBA_PWL_SEG0: ISHARP Local Brightness Adjustment PWL Segment 0 dscl_prog_data->isharp_lba.in_seg[0] = 0; // ISHARP LBA PWL for Seg 0. INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[0] = 0; // ISHARP LBA PWL for Seg 0. BASE value in U0.6 format dscl_prog_data->isharp_lba.slope_seg[0] = 32; // ISHARP LBA for Seg 0. SLOPE value in S5.3 format // ISHARP_LBA_PWL_SEG1: ISHARP LBA PWL Segment 1 - dscl_prog_data->isharp_lba.in_seg[1] = 256; // ISHARP LBA PWL for Seg 1. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.in_seg[1] = 254; // ISHARP LBA PWL for Seg 1. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[1] = 63; // ISHARP LBA PWL for Seg 1. BASE value in U0.6 format + dscl_prog_data->isharp_lba.slope_seg[1] = 0; // ISHARP LBA for Seg 1. SLOPE value in S5.3 format + // ISHARP_LBA_PWL_SEG2: ISHARP LBA PWL Segment 2 + dscl_prog_data->isharp_lba.in_seg[2] = 559; // ISHARP LBA PWL for Seg 2. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[2] = 63; // ISHARP LBA PWL for Seg 2. BASE value in U0.6 format + dscl_prog_data->isharp_lba.slope_seg[2] = 0x10C; // ISHARP LBA for Seg 2. SLOPE value in S5.3 format = -244 + // ISHARP_LBA_PWL_SEG3: ISHARP LBA PWL Segment 3 + dscl_prog_data->isharp_lba.in_seg[3] = 592; // ISHARP LBA PWL for Seg 3.INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[3] = 0; // ISHARP LBA PWL for Seg 3. BASE value in U0.6 format + dscl_prog_data->isharp_lba.slope_seg[3] = 0; // ISHARP LBA for Seg 3. SLOPE value in S5.3 format + // ISHARP_LBA_PWL_SEG4: ISHARP LBA PWL Segment 4 + dscl_prog_data->isharp_lba.in_seg[4] = 1023; // ISHARP LBA PWL for Seg 4.INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[4] = 0; // ISHARP LBA PWL for Seg 4. BASE value in U0.6 format + dscl_prog_data->isharp_lba.slope_seg[4] = 0; // ISHARP LBA for Seg 4. SLOPE value in S5.3 format + // ISHARP_LBA_PWL_SEG5: ISHARP LBA PWL Segment 5 + dscl_prog_data->isharp_lba.in_seg[5] = 1023; // ISHARP LBA PWL for Seg 5.INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[5] = 0; // ISHARP LBA PWL for Seg 5. BASE value in U0.6 format + } else { + // ISHARP_LBA_PWL_SEG0: ISHARP Local Brightness Adjustment PWL Segment 0 + dscl_prog_data->isharp_lba.in_seg[0] = 0; // ISHARP LBA PWL for Seg 0. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.base_seg[0] = 0; // ISHARP LBA PWL for Seg 0. BASE value in U0.6 format + dscl_prog_data->isharp_lba.slope_seg[0] = 40; // ISHARP LBA for Seg 0. SLOPE value in S5.3 format + // ISHARP_LBA_PWL_SEG1: ISHARP LBA PWL Segment 1 + dscl_prog_data->isharp_lba.in_seg[1] = 204; // ISHARP LBA PWL for Seg 1. INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[1] = 63; // ISHARP LBA PWL for Seg 1. BASE value in U0.6 format dscl_prog_data->isharp_lba.slope_seg[1] = 0; // ISHARP LBA for Seg 1. SLOPE value in S5.3 format // ISHARP_LBA_PWL_SEG2: ISHARP LBA PWL Segment 2 - dscl_prog_data->isharp_lba.in_seg[2] = 614; // ISHARP LBA PWL for Seg 2. INPUT value in U0.10 format + dscl_prog_data->isharp_lba.in_seg[2] = 818; // ISHARP LBA PWL for Seg 2. INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[2] = 63; // ISHARP LBA PWL for Seg 2. BASE value in U0.6 format - dscl_prog_data->isharp_lba.slope_seg[2] = 0x1EC; // ISHARP LBA for Seg 2. SLOPE value in S5.3 format = -20 + dscl_prog_data->isharp_lba.slope_seg[2] = 0x1D9; // ISHARP LBA for Seg 2. SLOPE value in S5.3 format = -39 // ISHARP_LBA_PWL_SEG3: ISHARP LBA PWL Segment 3 dscl_prog_data->isharp_lba.in_seg[3] = 1023; // ISHARP LBA PWL for Seg 3.INPUT value in U0.10 format dscl_prog_data->isharp_lba.base_seg[3] = 0; // ISHARP LBA PWL for Seg 3. BASE value in U0.6 format @@ -1696,7 +1759,7 @@ bool spl_calculate_scaler_params(struct spl_in *spl_in, struct spl_out *spl_out) // Set EASF spl_set_easf_data(&spl_scratch, spl_out, enable_easf_v, enable_easf_h, spl_in->lls_pref, - spl_in->basic_in.format, setup); + spl_in->basic_in.format, setup, spl_in->hdr_multx100); // Set iSHARP vratio = spl_fixpt_ceil(spl_scratch.scl_data.ratios.vert); diff --git a/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h b/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h index 3d61c9825807..7c1a21c2305d 100644 --- a/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h +++ b/drivers/gpu/drm/amd/display/dc/spl/dc_spl_types.h @@ -10,6 +10,7 @@ #define SPL_ASSERT(_bool) ((void *)0) #endif #include "spl_fixpt31_32.h" // fixed31_32 and related functions +#include "spl_custom_float.h" // custom float and related functions struct spl_size { uint32_t width; @@ -504,6 +505,7 @@ struct spl_in { bool is_hdr_on; int h_active; int v_active; + int hdr_multx100; }; // end of SPL inputs diff --git a/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.c b/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.c new file mode 100644 index 000000000000..be2f34d034c5 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.c @@ -0,0 +1,151 @@ +// SPDX-License-Identifier: MIT +// +// Copyright 2024 Advanced Micro Devices, Inc. + +#include "spl_debug.h" +#include "spl_custom_float.h" + +static bool spl_build_custom_float(struct spl_fixed31_32 value, + const struct spl_custom_float_format *format, + bool *negative, + uint32_t *mantissa, + uint32_t *exponenta) +{ + uint32_t exp_offset = (1 << (format->exponenta_bits - 1)) - 1; + + const struct spl_fixed31_32 mantissa_constant_plus_max_fraction = + spl_fixpt_from_fraction((1LL << (format->mantissa_bits + 1)) - 1, + 1LL << format->mantissa_bits); + + struct spl_fixed31_32 mantiss; + + if (spl_fixpt_eq(value, spl_fixpt_zero)) { + *negative = false; + *mantissa = 0; + *exponenta = 0; + return true; + } + + if (spl_fixpt_lt(value, spl_fixpt_zero)) { + *negative = format->sign; + value = spl_fixpt_neg(value); + } else { + *negative = false; + } + + if (spl_fixpt_lt(value, spl_fixpt_one)) { + uint32_t i = 1; + + do { + value = spl_fixpt_shl(value, 1); + ++i; + } while (spl_fixpt_lt(value, spl_fixpt_one)); + + --i; + + if (exp_offset <= i) { + *mantissa = 0; + *exponenta = 0; + return true; + } + + *exponenta = exp_offset - i; + } else if (spl_fixpt_le(mantissa_constant_plus_max_fraction, value)) { + uint32_t i = 1; + + do { + value = spl_fixpt_shr(value, 1); + ++i; + } while (spl_fixpt_lt(mantissa_constant_plus_max_fraction, value)); + + *exponenta = exp_offset + i - 1; + } else { + *exponenta = exp_offset; + } + + mantiss = spl_fixpt_sub(value, spl_fixpt_one); + + if (spl_fixpt_lt(mantiss, spl_fixpt_zero) || + spl_fixpt_lt(spl_fixpt_one, mantiss)) + mantiss = spl_fixpt_zero; + else + mantiss = spl_fixpt_shl(mantiss, format->mantissa_bits); + + *mantissa = spl_fixpt_floor(mantiss); + + return true; +} + +static bool spl_setup_custom_float(const struct spl_custom_float_format *format, + bool negative, + uint32_t mantissa, + uint32_t exponenta, + uint32_t *result) +{ + uint32_t i = 0; + uint32_t j = 0; + uint32_t value = 0; + + /* verification code: + * once calculation is ok we can remove it + */ + + const uint32_t mantissa_mask = + (1 << (format->mantissa_bits + 1)) - 1; + + const uint32_t exponenta_mask = + (1 << (format->exponenta_bits + 1)) - 1; + + if (mantissa & ~mantissa_mask) { + SPL_BREAK_TO_DEBUGGER(); + mantissa = mantissa_mask; + } + + if (exponenta & ~exponenta_mask) { + SPL_BREAK_TO_DEBUGGER(); + exponenta = exponenta_mask; + } + + /* end of verification code */ + + while (i < format->mantissa_bits) { + uint32_t mask = 1 << i; + + if (mantissa & mask) + value |= mask; + + ++i; + } + + while (j < format->exponenta_bits) { + uint32_t mask = 1 << j; + + if (exponenta & mask) + value |= mask << i; + + ++j; + } + + if (negative && format->sign) + value |= 1 << (i + j); + + *result = value; + + return true; +} + +bool spl_convert_to_custom_float_format(struct spl_fixed31_32 value, + const struct spl_custom_float_format *format, + uint32_t *result) +{ + uint32_t mantissa; + uint32_t exponenta; + bool negative; + + return spl_build_custom_float(value, format, &negative, &mantissa, &exponenta) && + spl_setup_custom_float(format, + negative, + mantissa, + exponenta, + result); +} diff --git a/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.h b/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.h new file mode 100644 index 000000000000..cdc4e107b9de --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/spl/spl_custom_float.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: MIT */ + +/* Copyright 2024 Advanced Micro Devices, Inc. */ + +#ifndef SPL_CUSTOM_FLOAT_H_ +#define SPL_CUSTOM_FLOAT_H_ + +#include "spl_os_types.h" +#include "spl_fixpt31_32.h" + +struct spl_custom_float_format { + uint32_t mantissa_bits; + uint32_t exponenta_bits; + bool sign; +}; + +struct spl_custom_float_value { + uint32_t mantissa; + uint32_t exponenta; + uint32_t value; + bool negative; +}; + +bool spl_convert_to_custom_float_format( + struct spl_fixed31_32 value, + const struct spl_custom_float_format *format, + uint32_t *result); + +#endif //SPL_CUSTOM_FLOAT_H_ -- 2.34.1