91 lines
2.6 KiB
NASM
91 lines
2.6 KiB
NASM
;
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; Copyright (c) 2017 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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; TODO(johannkoenig): Add the necessary include guards to vpx_config.asm.
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; vpx_config.asm is not guarded so can not be included twice. Because this will
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; be used in conjunction with x86_abi_support.asm or x86inc.asm, it must be
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; included after those files.
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; Increment register by sizeof() tran_low_t * 8.
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%macro INCREMENT_TRAN_LOW 1
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%if CONFIG_VP9_HIGHBITDEPTH
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add %1, 32
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%else
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add %1, 16
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%endif
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%endmacro
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; Increment %1 by sizeof() tran_low_t * %2.
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%macro INCREMENT_ELEMENTS_TRAN_LOW 2
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%if CONFIG_VP9_HIGHBITDEPTH
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lea %1, [%1 + %2 * 4]
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%else
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lea %1, [%1 + %2 * 2]
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%endif
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%endmacro
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; Load %2 + %3 into m%1.
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; %3 is the offset in elements, not bytes.
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; If tran_low_t is 16 bits (low bit depth configuration) then load the value
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; directly. If tran_low_t is 32 bits (high bit depth configuration) then pack
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; the values down to 16 bits.
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%macro LOAD_TRAN_LOW 3
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%if CONFIG_VP9_HIGHBITDEPTH
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mova m%1, [%2 + (%3) * 4]
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packssdw m%1, [%2 + (%3) * 4 + 16]
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%else
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mova m%1, [%2 + (%3) * 2]
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%endif
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%endmacro
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; Store m%1 to %2 + %3.
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; %3 is the offset in elements, not bytes.
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; If 5 arguments are provided then m%1 is corrupted.
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; If 6 arguments are provided then m%1 is preserved.
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; If tran_low_t is 16 bits (low bit depth configuration) then store the value
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; directly. If tran_low_t is 32 bits (high bit depth configuration) then sign
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; extend the values first.
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; Uses m%4-m%6 as scratch registers for high bit depth.
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%macro STORE_TRAN_LOW 5-6
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%if CONFIG_VP9_HIGHBITDEPTH
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pxor m%4, m%4
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mova m%5, m%1
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%if %0 == 6
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mova m%6, m%1
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%endif
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pcmpgtw m%4, m%1
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punpcklwd m%5, m%4
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%if %0 == 5
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punpckhwd m%1, m%4
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%else
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punpckhwd m%6, m%4
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%endif
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mova [%2 + (%3) * 4 + 0], m%5
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%if %0 == 5
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mova [%2 + (%3) * 4 + 16], m%1
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%else
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mova [%2 + (%3) * 4 + 16], m%6
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%endif
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%else
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mova [%2 + (%3) * 2], m%1
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%endif
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%endmacro
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; Store zeros (in m%1) to %2 + %3.
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; %3 is the offset in elements, not bytes.
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%macro STORE_ZERO_TRAN_LOW 3
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%if CONFIG_VP9_HIGHBITDEPTH
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mova [%2 + (%3) * 4 + 0], m%1
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mova [%2 + (%3) * 4 + 16], m%1
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%else
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mova [%2 + (%3) * 2], m%1
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%endif
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%endmacro
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