136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/* multimedia.c -- Builtins for HSAIL multimedia instructions.
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Copyright (C) 2015-2021 Free Software Foundation, Inc.
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Contributed by Pekka Jaaskelainen <pekka.jaaskelainen@parmance.com>
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for General Processor Tech.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files
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(the "Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <math.h>
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#include <stdint.h>
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uint32_t
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__hsail_bitalign (uint64_t lower, uint64_t upper, uint32_t shift_amount)
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{
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shift_amount = shift_amount & 31;
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uint64_t packed_value = (upper << 32) | lower;
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return (packed_value >> shift_amount) & 0xFFFFFFFF;
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}
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uint32_t
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__hsail_bytealign (uint64_t lower, uint64_t upper, uint32_t shift_amount)
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{
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shift_amount = (shift_amount & 3) * 8;
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uint64_t packed_value = (upper << 32) | lower;
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return (packed_value >> shift_amount) & 0xFFFFFFFF;
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}
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uint32_t
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__hsail_lerp (uint32_t a, uint32_t b, uint32_t c)
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{
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uint32_t e3
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= (((((a >> 24) & 0xff) + ((b >> 24) & 0xff) + ((c >> 24) & 0x1)) / 2)
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& 0xff)
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<< 24;
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uint32_t e2
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= (((((a >> 16) & 0xff) + ((b >> 16) & 0xff) + ((c >> 16) & 0x1)) / 2)
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& 0xff)
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<< 16;
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uint32_t e1
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= (((((a >> 8) & 0xff) + ((b >> 8) & 0xff) + ((c >> 8) & 0x1)) / 2) & 0xff)
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<< 8;
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uint32_t e0 = (((a & 0xff) + (b & 0xff) + (c & 0x1)) / 2) & 0xff;
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return e3 | e2 | e1 | e0;
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}
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static uint8_t
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cvt_neari_sat_u8_f32 (float a)
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{
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if (isinf (a))
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{
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if (signbit (a)) return 0;
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else return 255;
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}
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else if (isnan (a)) return 0;
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else if (a < 0.0)
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return 0;
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else if (a > 255.0)
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return 255;
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else
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return (uint8_t) a;
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}
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uint32_t
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__hsail_packcvt (float a, float b, float c, float d)
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{
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return (uint32_t) cvt_neari_sat_u8_f32 (a)
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| (uint32_t) cvt_neari_sat_u8_f32 (b) << 8
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| (uint32_t) cvt_neari_sat_u8_f32 (c) << 16
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| (uint32_t) cvt_neari_sat_u8_f32 (d) << 24;
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}
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float
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__hsail_unpackcvt (uint32_t val, uint32_t index)
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{
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return (float) ((val >> (index * 8)) & 0xff);
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}
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static uint32_t
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abs_diff (uint32_t a, uint32_t b)
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{
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if (a < b)
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return b - a;
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else
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return a - b;
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}
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uint32_t
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__hsail_sad_u8x4 (uint32_t a, uint32_t b, uint32_t add)
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{
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return abs_diff ((a >> 24) & 0xff, (b >> 24) & 0xff)
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+ abs_diff ((a >> 16) & 0xff, (b >> 16) & 0xff)
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+ abs_diff ((a >> 8) & 0xff, (b >> 8) & 0xff)
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+ abs_diff ((a >> 0) & 0xff, (b >> 0) & 0xff) + add;
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}
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uint32_t
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__hsail_sad_u16x2 (uint32_t a, uint32_t b, uint32_t add)
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{
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return abs_diff ((a >> 16) & 0xffff, (b >> 16) & 0xffff)
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+ abs_diff ((a >> 0) & 0xffff, (b >> 0) & 0xffff) + add;
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}
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uint32_t
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__hsail_sad_u32 (uint32_t a, uint32_t b, uint32_t add)
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{
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return abs_diff (a, b) + add;
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}
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uint32_t
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__hsail_sadhi_u16x2_u8x4 (uint32_t a, uint32_t b, uint32_t add)
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{
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return (abs_diff ((a >> 24) & 0xff, (b >> 24) & 0xff) << 16)
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+ (abs_diff ((a >> 16) & 0xff, (b >> 16) & 0xff) << 16)
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+ (abs_diff ((a >> 8) & 0xff, (b >> 8) & 0xff) << 16)
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+ (abs_diff ((a >> 0) & 0xff, (b >> 0) & 0xff) << 16) + add;
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}
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