diff options
Diffstat (limited to 'src/3rdparty/libjpeg/src/jdmerge.c')
| -rw-r--r-- | src/3rdparty/libjpeg/src/jdmerge.c | 55 |
1 files changed, 13 insertions, 42 deletions
diff --git a/src/3rdparty/libjpeg/src/jdmerge.c b/src/3rdparty/libjpeg/src/jdmerge.c index dff5a35087..3a456d6581 100644 --- a/src/3rdparty/libjpeg/src/jdmerge.c +++ b/src/3rdparty/libjpeg/src/jdmerge.c @@ -5,7 +5,7 @@ * Copyright (C) 1994-1996, Thomas G. Lane. * libjpeg-turbo Modifications: * Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB - * Copyright (C) 2009, 2011, 2014-2015, D. R. Commander. + * Copyright (C) 2009, 2011, 2014-2015, 2020, D. R. Commander. * Copyright (C) 2013, Linaro Limited. * For conditions of distribution and use, see the accompanying README.ijg * file. @@ -40,41 +40,13 @@ #define JPEG_INTERNALS #include "jinclude.h" #include "jpeglib.h" +#include "jdmerge.h" #include "jsimd.h" #include "jconfigint.h" #ifdef UPSAMPLE_MERGING_SUPPORTED -/* Private subobject */ - -typedef struct { - struct jpeg_upsampler pub; /* public fields */ - - /* Pointer to routine to do actual upsampling/conversion of one row group */ - 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 */ - 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 - * application provides just a one-row buffer; we also use the spare - * to discard the dummy last row if the image height is odd. - */ - JSAMPROW spare_row; - 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 */ -} my_upsampler; - -typedef my_upsampler *my_upsample_ptr; - #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)) @@ -189,7 +161,7 @@ typedef my_upsampler *my_upsample_ptr; LOCAL(void) build_ycc_rgb_table(j_decompress_ptr cinfo) { - my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample; + my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; int i; JLONG x; SHIFT_TEMPS @@ -232,7 +204,7 @@ build_ycc_rgb_table(j_decompress_ptr cinfo) METHODDEF(void) start_pass_merged_upsample(j_decompress_ptr cinfo) { - my_upsample_ptr upsample = (my_upsample_ptr)cinfo->upsample; + my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; /* Mark the spare buffer empty */ upsample->spare_full = FALSE; @@ -254,7 +226,7 @@ merged_2v_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_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; + my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; JSAMPROW work_ptrs[2]; JDIMENSION num_rows; /* number of rows returned to caller */ @@ -305,7 +277,7 @@ merged_1v_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_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; + my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample; /* Just do the upsampling. */ (*upsample->upmethod) (cinfo, input_buf, *in_row_group_ctr, @@ -420,11 +392,10 @@ h2v2_merged_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, * RGB565 conversion */ -#define PACK_SHORT_565_LE(r, g, b) ((((r) << 8) & 0xF800) | \ - (((g) << 3) & 0x7E0) | ((b) >> 3)) -#define PACK_SHORT_565_BE(r, g, b) (((r) & 0xF8) | ((g) >> 5) | \ - (((g) << 11) & 0xE000) | \ - (((b) << 5) & 0x1F00)) +#define PACK_SHORT_565_LE(r, g, b) \ + ((((r) << 8) & 0xF800) | (((g) << 3) & 0x7E0) | ((b) >> 3)) +#define PACK_SHORT_565_BE(r, g, b) \ + (((r) & 0xF8) | ((g) >> 5) | (((g) << 11) & 0xE000) | (((b) << 5) & 0x1F00)) #define PACK_TWO_PIXELS_LE(l, r) ((r << 16) | l) #define PACK_TWO_PIXELS_BE(l, r) ((l << 16) | r) @@ -566,11 +537,11 @@ h2v2_merged_upsample_565D(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, GLOBAL(void) jinit_merged_upsampler(j_decompress_ptr cinfo) { - my_upsample_ptr upsample; + my_merged_upsample_ptr upsample; - upsample = (my_upsample_ptr) + upsample = (my_merged_upsample_ptr) (*cinfo->mem->alloc_small) ((j_common_ptr)cinfo, JPOOL_IMAGE, - sizeof(my_upsampler)); + sizeof(my_merged_upsampler)); cinfo->upsample = (struct jpeg_upsampler *)upsample; upsample->pub.start_pass = start_pass_merged_upsample; upsample->pub.need_context_rows = FALSE; |