ref: 158b300952b1b70c7d99c792cb8e763d6c508f4d
dir: /vpx_dsp/x86/bitdepth_conversion_sse2.asm/
; ; Copyright (c) 2017 The WebM project authors. All Rights Reserved. ; ; Use of this source code is governed by a BSD-style license ; that can be found in the LICENSE file in the root of the source ; tree. An additional intellectual property rights grant can be found ; in the file PATENTS. All contributing project authors may ; be found in the AUTHORS file in the root of the source tree. ; ; TODO(johannkoenig): Add the necessary include guards to vpx_config.asm. ; vpx_config.asm is not guarded so can not be included twice. Because this will ; be used in conjunction with x86_abi_support.asm or x86inc.asm, it must be ; included after those files. ; Increment register by sizeof() tran_low_t * 8. %macro INCREMENT_TRAN_LOW 1 %if CONFIG_VP9_HIGHBITDEPTH add %1, 32 %else add %1, 16 %endif %endmacro ; Increment %1 by sizeof() tran_low_t * %2. %macro INCREMENT_ELEMENTS_TRAN_LOW 2 %if CONFIG_VP9_HIGHBITDEPTH lea %1, [%1 + %2 * 4] %else lea %1, [%1 + %2 * 2] %endif %endmacro ; Load %2 + %3 into m%1. ; %3 is the offset in elements, not bits. ; If tran_low_t is 16 bits (low bit depth configuration) then load the value ; directly. If tran_low_t is 32 bits (high bit depth configuration) then pack ; the values down to 16 bits. %macro LOAD_TRAN_LOW 3 %if CONFIG_VP9_HIGHBITDEPTH mova m%1, [%2 + %3 * 32] packssdw m%1, [%2 + %3 * 32 + 16] %else mova m%1, [%2 + %3 * 16] %endif %endmacro ; Store m%1 to %2 + %3. ; %3 is the offset in elements, not bits. ; If tran_low_t is 16 bits (low bit depth configuration) then store the value ; directly. If tran_low_t is 32 bits (high bit depth configuration) then sign ; extend the values first. ; Uses m%4-m%6 as scratch registers for high bit depth. %macro STORE_TRAN_LOW 5 %if CONFIG_VP9_HIGHBITDEPTH pxor m%4, m%4 mova m%5, m%1 pcmpgtw m%4, m%1 punpcklwd m%5, m%4 punpckhwd m%1, m%4 mova [%2 + %3 * 32 + 0], m%5 mova [%2 + %3 * 32 + 16], m%1 %else mova [%2 + %3 * 16], m%1 %endif %endmacro