Delete media/base/yuv_convert and dependents. Prefer libyuv.

media/base/simd/convert_rgb_to_yuv_ssse3.inc

-; Copyright (c) 2011 The Chromium Authors. All rights reserved.
-; Use of this source code is governed by a BSD-style license that can be
-; found in the LICENSE file.
-
-;
-; void SYMBOL(const uint8_t* argb, uint8_t* y, uint8_t* u, uint8_t* v, int width);
-;
-; The main code that converts RGB pixels to YUV pixels. This function roughly
-; consists of three parts: converting one ARGB pixel to YUV pixels, converting
-; two ARGB pixels to YUV pixels, and converting four ARGB pixels to YUV pixels.
-; To write the structure of this function in C, it becomes the snippet listed
-; below.
-;
-;   if (width & 1) {
-;     --width;
-;     // Convert one ARGB pixel to one Y pixel, one U pixel, and one V pixel.
-;   }
-;
-;   if (width & 2) {
-;     width -= 2;
-;     // Convert two ARGB pixels to two Y pixels, one U pixel, and one V pixel.
-;   }
-;
-;   while (width) {
-;     width -= 4;
-;     // Convert four ARGB pixels to four Y pixels, two U pixels, and two V
-;     // pixels.
-;   }
-;
-  EXPORT    SYMBOL
-  align     function_align
-
-mangle(SYMBOL):
-  %assign stack_offset 0
-  PROLOGUE 5, 6, 8, ARGB, Y, U, V, WIDTH, TEMP
-
-  ; Initialize constants used in this function. (We use immediates to avoid
-  ; dependency onto GOT.)
-  LOAD_XMM  XMM_CONST_Y0, 0x00420219
-  LOAD_XMM  XMM_CONST_Y1, 0x00007F00
-  LOAD_XMM  XMM_CONST_U, 0x00DAB670
-  LOAD_XMM  XMM_CONST_V, 0x0070A2EE
-  LOAD_XMM  XMM_CONST_128, 0x00800080
-
-.convert_one_pixel:
-  ; Divide the input width by two so it represents the offsets for u[] and v[].
-  ; When the width is odd, We read the rightmost ARGB pixel and convert its
-  ; colorspace to YUV. This code stores one Y pixel, one U pixel, and one V
-  ; pixel.
-  sar       WIDTHq, 1
-  jnc       .convert_two_pixels
-
-  ; Read one ARGB (or RGB) pixel.
-  READ_ARGB xmm0, 1
-
-  ; Calculate y[0] from one RGB pixel read above.
-  CALC_Y    xmm1, xmm0
-  movd      TEMPd, xmm1
-  mov       BYTE [Yq + WIDTHq * 2], TEMPb
-
-  ; Calculate u[0] from one RGB pixel read above. If this is an odd line, the
-  ; output pixel contains the U value calculated in the previous call. We also
-  ; read this pixel and calculate their average.
-  INIT_UV   TEMPd, Uq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_U, TEMPd
-  movd      TEMPd, xmm1
-  mov       BYTE [Uq + WIDTHq], TEMPb
-
-  ; Calculate v[0] from one RGB pixel. Same as u[0], we read the result of the
-  ; previous call and get their average.
-  INIT_UV   TEMPd, Uq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_V, TEMPd
-  movd      TEMPd, xmm1
-  mov       BYTE [Vq + WIDTHq], TEMPb
-
-.convert_two_pixels:
-  ; If the input width is not a multiple of four, read the rightmost two ARGB
-  ; pixels and convert their colorspace to YUV. This code stores two Y pixels,
-  ; one U pixel, and one V pixel.
-  test      WIDTHb, 2 / 2
-  jz        .convert_four_pixels
-  sub       WIDTHb, 2 / 2
-
-  ; Read two ARGB (or RGB) pixels.
-  READ_ARGB xmm0, 2
-
-  ; Calculate r[0] and r[1] from two RGB pixels read above.
-  CALC_Y    xmm1, xmm0
-  movd      TEMPd, xmm1
-  mov       WORD [Yq + WIDTHq * 2], TEMPw
-
-  ; Skip calculating u and v if the output buffer is NULL.
-  test      Uq, Uq
-  jz        .convert_four_pixels
-
-  ; Calculate u[0] from two RGB pixels read above. (For details, read the above
-  ; comment in .convert_one_pixel).
-  INIT_UV   TEMPd, Uq, 2
-  CALC_UV   xmm1, xmm0, XMM_CONST_U, TEMPd
-  movd      TEMPd, xmm1
-  mov       BYTE [Uq + WIDTHq], TEMPb
-
-  ; Calculate v[0] from two RGB pixels read above.
-  INIT_UV   TEMPd, Vq, 2
-  CALC_UV   xmm1, xmm0, XMM_CONST_V, TEMPd
-  movd      TEMPd, xmm1
-  mov       BYTE [Vq + WIDTHq], TEMPb
-
-.convert_four_pixels:
-  ; Read four ARGB pixels and convert their colorspace to YUV. This code stores
-  ; four Y pixels, two U pixels, and two V pixels.
-  test      WIDTHq, WIDTHq
-  jz        .convert_finish
-
-%if PIXELSIZE == 4
-  ; Check if the input buffer is aligned to a 16-byte boundary and use movdqa
-  ; for reading the ARGB pixels.
-  test      ARGBw, 15
-  jnz       .convert_four_pixels_unaligned
-
-.convert_four_pixels_aligned:
-  sub       WIDTHq, 4 / 2
-
-  ; Read four ARGB pixels. (We can use movdqa here since we have checked if the
-  ; source address is aligned.)
-  movdqa    xmm0, DQWORD [ARGBq + WIDTHq * 4 * 2]
-
-  ; Calculate y[0], y[1], y[2],and, y[3] from the input ARGB pixels.
-  CALC_Y    xmm1, xmm0
-  movd      DWORD [Yq + WIDTHq * 2], xmm1
-
-%if SUBSAMPLING == 0
-  ; Skip calculating u and v if the output buffer is NULL, which means we are
-  ; converting an odd line. (When we enable subsampling, these buffers must
-  ; contain the u and v values for the previous call, i.e. these variables must
-  ; not be NULL.)
-  test      Uq, Uq
-  jz        .convert_four_pixels_aligned_next
-%endif
-
-  ; Calculate u[0] and u[1] from four ARGB pixels read above.
-  INIT_UV   TEMPd, Uq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_U, TEMPd
-  movd      TEMPd, xmm1
-  mov       WORD [Uq + WIDTHq], TEMPw
-
-  ; Calculate v[0] and v[1] from four ARGB pixels read above.
-  INIT_UV   TEMPd, Vq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_V, TEMPd
-  movd      TEMPd, xmm1
-  mov       WORD [Vq + WIDTHq], TEMPw
-
-%if SUBSAMPLING == 0
-.convert_four_pixels_aligned_next:
-%endif
-
-  test      WIDTHq, WIDTHq
-  jnz       .convert_four_pixels_aligned
-
-  jmp       .convert_finish
-%endif
-
-.convert_four_pixels_unaligned:
-  sub       WIDTHq, 4 / 2
-
-  ; Read four ARGB (or RGB) pixels.
-  READ_ARGB xmm0, 4
-
-  ; Calculate y[0], y[1], y[2],and, y[3] from the input ARGB pixels.
-  CALC_Y    xmm1, xmm0
-  movd      DWORD [Yq + WIDTHq * 2], xmm1
-
-%if SUBSAMPLING == 0
-  ; Skip calculating u and v if the output buffer is NULL.
-  test      Uq, Uq
-  jz        .convert_four_pixels_unaligned_next
-%endif
-
-  ; Calculate u[0] and u[1] from the input ARGB pixels.
-  INIT_UV   TEMPd, Uq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_U, TEMPd
-  movd      TEMPd, xmm1
-  mov       WORD [Uq + WIDTHq], TEMPw
-
-  ; Calculate v[0] and v[1] from the input ARGB pixels.
-  INIT_UV   TEMPd, Vq, 4
-  CALC_UV   xmm1, xmm0, XMM_CONST_V, TEMPd
-  movd      TEMPd, xmm1
-  mov       WORD [Vq + WIDTHq], TEMPw
-
-%if SUBSAMPLING == 0
-.convert_four_pixels_unaligned_next:
-%endif
-
-  test      WIDTHq, WIDTHq
-  jnz       .convert_four_pixels_unaligned
-
-.convert_finish:
-  ; Just exit this function since this is a void function.
-  RET