diff options
Diffstat (limited to 'thirdparty/libpng/arm/palette_neon_intrinsics.c')
| -rw-r--r-- | thirdparty/libpng/arm/palette_neon_intrinsics.c | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/thirdparty/libpng/arm/palette_neon_intrinsics.c b/thirdparty/libpng/arm/palette_neon_intrinsics.c index fa02d6a8b3..b4d1fd2abf 100644 --- a/thirdparty/libpng/arm/palette_neon_intrinsics.c +++ b/thirdparty/libpng/arm/palette_neon_intrinsics.c @@ -1,7 +1,7 @@ /* palette_neon_intrinsics.c - NEON optimised palette expansion functions * - * Copyright (c) 2018 Cosmin Truta + * Copyright (c) 2018-2019 Cosmin Truta * Copyright (c) 2017-2018 Arm Holdings. All rights reserved. * Written by Richard Townsend <Richard.Townsend@arm.com>, February 2017. * @@ -20,9 +20,9 @@ # include <arm_neon.h> #endif -/* Build an RGBA palette from the RGB and separate alpha palettes. */ +/* Build an RGBA8 palette from the separate RGB and alpha palettes. */ void -png_riffle_palette_rgba(png_structrp png_ptr, png_row_infop row_info) +png_riffle_palette_neon(png_structrp png_ptr) { png_const_colorp palette = png_ptr->palette; png_bytep riffled_palette = png_ptr->riffled_palette; @@ -30,6 +30,8 @@ png_riffle_palette_rgba(png_structrp png_ptr, png_row_infop row_info) int num_trans = png_ptr->num_trans; int i; + png_debug(1, "in png_riffle_palette_neon"); + /* Initially black, opaque. */ uint8x16x4_t w = {{ vdupq_n_u8(0x00), @@ -38,16 +40,10 @@ png_riffle_palette_rgba(png_structrp png_ptr, png_row_infop row_info) vdupq_n_u8(0xff), }}; - if (row_info->bit_depth != 8) - { - png_error(png_ptr, "bit_depth must be 8 for png_riffle_palette_rgba"); - return; - } - - /* First, riffle the RGB colours into a RGBA palette, the A value is - * set to opaque for now. + /* First, riffle the RGB colours into an RGBA8 palette. + * The alpha component is set to opaque for now. */ - for (i = 0; i < (1 << row_info->bit_depth); i += 16) + for (i = 0; i < 256; i += 16) { uint8x16x3_t v = vld3q_u8((png_const_bytep)(palette + i)); w.val[0] = v.val[0]; @@ -61,9 +57,9 @@ png_riffle_palette_rgba(png_structrp png_ptr, png_row_infop row_info) riffled_palette[(i << 2) + 3] = trans_alpha[i]; } -/* Expands a palettized row into RGBA. */ +/* Expands a palettized row into RGBA8. */ int -png_do_expand_palette_neon_rgba(png_structrp png_ptr, png_row_infop row_info, +png_do_expand_palette_rgba8_neon(png_structrp png_ptr, png_row_infop row_info, png_const_bytep row, png_bytepp ssp, png_bytepp ddp) { png_uint_32 row_width = row_info->width; @@ -72,6 +68,8 @@ png_do_expand_palette_neon_rgba(png_structrp png_ptr, png_row_infop row_info, const png_int_32 pixels_per_chunk = 4; int i; + png_debug(1, "in png_do_expand_palette_rgba8_neon"); + if (row_width < pixels_per_chunk) return 0; @@ -103,9 +101,9 @@ png_do_expand_palette_neon_rgba(png_structrp png_ptr, png_row_infop row_info, return i; } -/* Expands a palettized row into RGB format. */ +/* Expands a palettized row into RGB8. */ int -png_do_expand_palette_neon_rgb(png_structrp png_ptr, png_row_infop row_info, +png_do_expand_palette_rgb8_neon(png_structrp png_ptr, png_row_infop row_info, png_const_bytep row, png_bytepp ssp, png_bytepp ddp) { png_uint_32 row_width = row_info->width; @@ -113,6 +111,8 @@ png_do_expand_palette_neon_rgb(png_structrp png_ptr, png_row_infop row_info, const png_uint_32 pixels_per_chunk = 8; int i; + png_debug(1, "in png_do_expand_palette_rgb8_neon"); + if (row_width <= pixels_per_chunk) return 0; |