diff options
author | Tom Hudson <tomhudson@google.com> | 2016-05-04 13:22:56 -0400 |
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committer | Tom Hudson <tomhudson@google.com> | 2016-05-04 13:22:56 -0400 |
commit | 0d47d2d3a728e78676a15b1d818cc668cb7e5a9c (patch) | |
tree | 044a430eeaa2dec4d6de7b624da15fda1b8ed25f /jdmerge.c | |
parent | 9d35298a6223278a66423f828a949d93d94d5911 (diff) |
Update to libjpeg_turbo 1.4.90
(Duplicate of https://codereview.chromium.org/1939823002/ for landing.)
TBR=noel@chromium.org,thakis@chromium.org
BUG=608347, 398235, 591927
Review URL: https://codereview.chromium.org/1953443002 .
Diffstat (limited to 'jdmerge.c')
-rw-r--r-- | jdmerge.c | 118 |
1 files changed, 59 insertions, 59 deletions
@@ -3,11 +3,12 @@ * * This file was part of the Independent JPEG Group's software: * Copyright (C) 1994-1996, Thomas G. Lane. - * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB * libjpeg-turbo Modifications: - * Copyright (C) 2009, 2011, 2014 D. R. Commander. + * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB + * Copyright (C) 2009, 2011, 2014-2015, D. R. Commander. * Copyright (C) 2013, Linaro Limited. - * For conditions of distribution and use, see the accompanying README file. + * For conditions of distribution and use, see the accompanying README.ijg + * file. * * This file contains code for merged upsampling/color conversion. * @@ -18,19 +19,19 @@ * (ie, box filtering), we can save some work in color conversion by * calculating all the output pixels corresponding to a pair of chroma * samples at one time. In the conversion equations - * R = Y + K1 * Cr - * G = Y + K2 * Cb + K3 * Cr - * B = Y + K4 * Cb + * R = Y + K1 * Cr + * G = Y + K2 * Cb + K3 * Cr + * B = Y + K4 * Cb * only the Y term varies among the group of pixels corresponding to a pair * of chroma samples, so the rest of the terms can be calculated just once. * At typical sampling ratios, this eliminates half or three-quarters of the * multiplications needed for color conversion. * * This file currently provides implementations for the following cases: - * YCbCr => RGB color conversion only. - * Sampling ratios of 2h1v or 2h2v. - * No scaling needed at upsample time. - * Corner-aligned (non-CCIR601) sampling alignment. + * YCbCr => RGB color conversion only. + * Sampling ratios of 2h1v or 2h2v. + * No scaling needed at upsample time. + * Corner-aligned (non-CCIR601) sampling alignment. * Other special cases could be added, but in most applications these are * the only common cases. (For uncommon cases we fall back on the more * general code in jdsample.c and jdcolor.c.) @@ -40,7 +41,7 @@ #include "jinclude.h" #include "jpeglib.h" #include "jsimd.h" -#include "config.h" +#include "jconfigint.h" #ifdef UPSAMPLE_MERGING_SUPPORTED @@ -48,18 +49,17 @@ /* Private subobject */ typedef struct { - struct jpeg_upsampler pub; /* public fields */ + struct jpeg_upsampler pub; /* public fields */ /* Pointer to routine to do actual upsampling/conversion of one row group */ - JMETHOD(void, upmethod, (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf)); + void (*upmethod) (j_decompress_ptr cinfo, JSAMPIMAGE input_buf, + JDIMENSION in_row_group_ctr, JSAMPARRAY output_buf); /* Private state for YCC->RGB conversion */ - int * Cr_r_tab; /* => table for Cr to R conversion */ - int * Cb_b_tab; /* => table for Cb to B conversion */ - INT32 * Cr_g_tab; /* => table for Cr to G conversion */ - INT32 * Cb_g_tab; /* => table for Cb to G conversion */ + int *Cr_r_tab; /* => table for Cr to R conversion */ + int *Cb_b_tab; /* => table for Cb to B conversion */ + JLONG *Cr_g_tab; /* => table for Cr to G conversion */ + JLONG *Cb_g_tab; /* => table for Cb to G conversion */ /* For 2:1 vertical sampling, we produce two output rows at a time. * We need a "spare" row buffer to hold the second output row if the @@ -67,17 +67,17 @@ typedef struct { * to discard the dummy last row if the image height is odd. */ JSAMPROW spare_row; - boolean spare_full; /* T if spare buffer is occupied */ + boolean spare_full; /* T if spare buffer is occupied */ - JDIMENSION out_row_width; /* samples per output row */ - JDIMENSION rows_to_go; /* counts rows remaining in image */ + JDIMENSION out_row_width; /* samples per output row */ + JDIMENSION rows_to_go; /* counts rows remaining in image */ } my_upsampler; -typedef my_upsampler * my_upsample_ptr; +typedef my_upsampler *my_upsample_ptr; -#define SCALEBITS 16 /* speediest right-shift on some machines */ -#define ONE_HALF ((INT32) 1 << (SCALEBITS-1)) -#define FIX(x) ((INT32) ((x) * (1L<<SCALEBITS) + 0.5)) +#define SCALEBITS 16 /* speediest right-shift on some machines */ +#define ONE_HALF ((JLONG) 1 << (SCALEBITS-1)) +#define FIX(x) ((JLONG) ((x) * (1L<<SCALEBITS) + 0.5)) /* Include inline routines for colorspace extensions */ @@ -191,31 +191,31 @@ build_ycc_rgb_table (j_decompress_ptr cinfo) { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; int i; - INT32 x; + JLONG x; SHIFT_TEMPS upsample->Cr_r_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); + (MAXJSAMPLE+1) * sizeof(int)); upsample->Cb_b_tab = (int *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(int)); - upsample->Cr_g_tab = (INT32 *) + (MAXJSAMPLE+1) * sizeof(int)); + upsample->Cr_g_tab = (JLONG *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); - upsample->Cb_g_tab = (INT32 *) + (MAXJSAMPLE+1) * sizeof(JLONG)); + upsample->Cb_g_tab = (JLONG *) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (MAXJSAMPLE+1) * SIZEOF(INT32)); + (MAXJSAMPLE+1) * sizeof(JLONG)); for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ /* Cr=>R value is nearest int to 1.40200 * x */ upsample->Cr_r_tab[i] = (int) - RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); + RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS); /* Cb=>B value is nearest int to 1.77200 * x */ upsample->Cb_b_tab[i] = (int) - RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); + RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS); /* Cr=>G value is scaled-up -0.71414 * x */ upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x; /* Cb=>G value is scaled-up -0.34414 * x */ @@ -249,15 +249,15 @@ start_pass_merged_upsample (j_decompress_ptr cinfo) METHODDEF(void) merged_2v_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) + JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, + JDIMENSION in_row_groups_avail, + JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, + JDIMENSION out_rows_avail) /* 2:1 vertical sampling case: may need a spare row. */ { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; JSAMPROW work_ptrs[2]; - JDIMENSION num_rows; /* number of rows returned to caller */ + JDIMENSION num_rows; /* number of rows returned to caller */ if (upsample->spare_full) { /* If we have a spare row saved from a previous cycle, just return it. */ @@ -265,7 +265,7 @@ merged_2v_upsample (j_decompress_ptr cinfo, if (cinfo->out_color_space == JCS_RGB565) size = cinfo->output_width * 2; jcopy_sample_rows(& upsample->spare_row, 0, output_buf + *out_row_ctr, 0, - 1, size); + 1, size); num_rows = 1; upsample->spare_full = FALSE; } else { @@ -301,17 +301,17 @@ merged_2v_upsample (j_decompress_ptr cinfo, METHODDEF(void) merged_1v_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, - JDIMENSION in_row_groups_avail, - JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, - JDIMENSION out_rows_avail) + JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, + JDIMENSION in_row_groups_avail, + JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, + JDIMENSION out_rows_avail) /* 1:1 vertical sampling case: much easier, never need a spare row. */ { my_upsample_ptr upsample = (my_upsample_ptr) cinfo->upsample; /* Just do the upsampling. */ (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, - output_buf + *out_row_ctr); + output_buf + *out_row_ctr); /* Adjust counts */ (*out_row_ctr)++; (*in_row_group_ctr)++; @@ -334,8 +334,8 @@ merged_1v_upsample (j_decompress_ptr cinfo, METHODDEF(void) h2v1_merged_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) { switch (cinfo->out_color_space) { case JCS_EXT_RGB: @@ -380,8 +380,8 @@ h2v1_merged_upsample (j_decompress_ptr cinfo, METHODDEF(void) h2v2_merged_upsample (j_decompress_ptr cinfo, - JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, - JSAMPARRAY output_buf) + JSAMPIMAGE input_buf, JDIMENSION in_row_group_ctr, + JSAMPARRAY output_buf) { switch (cinfo->out_color_space) { case JCS_EXT_RGB: @@ -436,12 +436,12 @@ h2v2_merged_upsample (j_decompress_ptr cinfo, #define PACK_NEED_ALIGNMENT(ptr) (((size_t)(ptr)) & 3) #define WRITE_TWO_PIXELS_LE(addr, pixels) { \ - ((INT16*)(addr))[0] = (pixels); \ - ((INT16*)(addr))[1] = (pixels) >> 16; \ + ((INT16*)(addr))[0] = (INT16)(pixels); \ + ((INT16*)(addr))[1] = (INT16)((pixels) >> 16); \ } #define WRITE_TWO_PIXELS_BE(addr, pixels) { \ - ((INT16*)(addr))[1] = (pixels); \ - ((INT16*)(addr))[0] = (pixels) >> 16; \ + ((INT16*)(addr))[1] = (INT16)(pixels); \ + ((INT16*)(addr))[0] = (INT16)((pixels) >> 16); \ } #define DITHER_565_R(r, dither) ((r) + ((dither) & 0xFF)) @@ -456,8 +456,8 @@ h2v2_merged_upsample (j_decompress_ptr cinfo, */ #define DITHER_MASK 0x3 -#define DITHER_ROTATE(x) (((x) << 24) | (((x) >> 8) & 0x00FFFFFF)) -static const INT32 dither_matrix[4] = { +#define DITHER_ROTATE(x) ((((x) & 0xFF) << 24) | (((x) >> 8) & 0x00FFFFFF)) +static const JLONG dither_matrix[4] = { 0x0008020A, 0x0C040E06, 0x030B0109, @@ -520,7 +520,7 @@ h2v1_merged_upsample_565 (j_decompress_ptr cinfo, else h2v1_merged_upsample_565_le(cinfo, input_buf, in_row_group_ctr, output_buf); -} + } METHODDEF(void) @@ -580,7 +580,7 @@ jinit_merged_upsampler (j_decompress_ptr cinfo) upsample = (my_upsample_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_IMAGE, - SIZEOF(my_upsampler)); + sizeof(my_upsampler)); cinfo->upsample = (struct jpeg_upsampler *) upsample; upsample->pub.start_pass = start_pass_merged_upsample; upsample->pub.need_context_rows = FALSE; @@ -603,7 +603,7 @@ jinit_merged_upsampler (j_decompress_ptr cinfo) /* Allocate a spare row buffer */ upsample->spare_row = (JSAMPROW) (*cinfo->mem->alloc_large) ((j_common_ptr) cinfo, JPOOL_IMAGE, - (size_t) (upsample->out_row_width * SIZEOF(JSAMPLE))); + (size_t) (upsample->out_row_width * sizeof(JSAMPLE))); } else { upsample->pub.upsample = merged_1v_upsample; if (jsimd_can_h2v1_merged_upsample()) |