10 #define JPEG_INTERNALS 90 for (ci = 0,
compptr = cinfo->comp_info; ci < cinfo->num_components;
97 cinfo,
compptr, input_buf[ci] + (*in_row_group_ctr *
113 out_rows_avail -= *out_row_ctr;
114 if (num_rows > out_rows_avail) num_rows = out_rows_avail;
116 (*cinfo->cconvert->color_convert)(
121 *out_row_ctr += num_rows;
126 (*in_row_group_ctr)++;
146 *output_data_ptr = input_data;
159 *output_data_ptr =
nullptr;
184 int h_expand, v_expand;
191 while (outrow < cinfo->max_v_samp_factor)
194 inptr = input_data[inrow];
195 outptr = output_data[outrow];
196 outend =
outptr + cinfo->output_width;
200 for (h = h_expand; h > 0; h--)
209 output_data, outrow, output_data, outrow + 1, v_expand - 1,
210 cinfo->output_width);
233 for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++)
235 inptr = input_data[inrow];
236 outptr = output_data[inrow];
237 outend =
outptr + cinfo->output_width;
264 while (outrow < cinfo->max_v_samp_factor)
266 inptr = input_data[inrow];
267 outptr = output_data[outrow];
268 outend =
outptr + cinfo->output_width;
276 output_data, outrow, output_data, outrow + 1, 1,
277 cinfo->output_width);
309 for (inrow = 0; inrow < cinfo->max_v_samp_factor; inrow++)
311 inptr = input_data[inrow];
312 outptr = output_data[inrow];
348 #if BITS_IN_JSAMPLE == 8 349 int thiscolsum, lastcolsum, nextcolsum;
351 INT32 thiscolsum, lastcolsum, nextcolsum;
354 int inrow, outrow,
v;
357 while (outrow < cinfo->max_v_samp_factor)
359 for (
v = 0;
v < 2;
v++)
363 inptr0 = input_data[inrow];
365 inptr1 = input_data[inrow - 1];
367 inptr1 = input_data[inrow + 1];
368 outptr = output_data[outrow++];
374 *
outptr++ = (
JSAMPLE)((thiscolsum * 3 + nextcolsum + 7) >> 4);
375 lastcolsum = thiscolsum;
376 thiscolsum = nextcolsum;
384 *
outptr++ = (
JSAMPLE)((thiscolsum * 3 + lastcolsum + 8) >> 4);
385 *
outptr++ = (
JSAMPLE)((thiscolsum * 3 + nextcolsum + 7) >> 4);
386 lastcolsum = thiscolsum;
387 thiscolsum = nextcolsum;
391 *
outptr++ = (
JSAMPLE)((thiscolsum * 3 + lastcolsum + 8) >> 4);
408 boolean need_buffer, do_fancy;
409 int h_in_group, v_in_group, h_out_group, v_out_group;
418 if (cinfo->CCIR601_sampling)
419 ERREXIT(cinfo, JERR_CCIR601_NOTIMPL);
424 do_fancy = cinfo->do_fancy_upsampling && cinfo->min_DCT_scaled_size > 1;
429 for (ci = 0,
compptr = cinfo->comp_info; ci < cinfo->num_components;
437 cinfo->min_DCT_scaled_size;
439 cinfo->min_DCT_scaled_size;
440 h_out_group = cinfo->max_h_samp_factor;
441 v_out_group = cinfo->max_v_samp_factor;
450 else if (h_in_group == h_out_group && v_in_group == v_out_group)
456 else if (h_in_group * 2 == h_out_group && v_in_group == v_out_group)
464 else if (h_in_group * 2 == h_out_group && v_in_group * 2 == v_out_group)
476 (h_out_group % h_in_group) == 0 && (v_out_group % v_in_group) == 0)
484 ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL);
487 upsample->
color_buf[ci] = (*cinfo->mem->alloc_sarray)(
490 (
long)cinfo->output_width, (long)cinfo->max_h_samp_factor),
typedef JMETHOD(void, upsample1_ptr,(j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr))
JDIMENSION downsampled_width
h2v1_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
my_upsampler * my_upsample_ptr
upsample1_ptr methods[MAX_COMPONENTS]
jround_up(long a, long b)
struct jpeg_common_struct * j_common_ptr
#define GETJSAMPLE(value)
#define ERREXIT(cinfo, code)
h2v1_upsample(j_decompress_ptr cinfo, jpeg_component_info *, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
JSAMPARRAY color_buf[MAX_COMPONENTS]
h2v2_fancy_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
struct jpeg_upsampler pub
h2v2_upsample(j_decompress_ptr cinfo, jpeg_component_info *, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
sep_upsample(j_decompress_ptr cinfo, JSAMPIMAGE input_buf, JDIMENSION *in_row_group_ctr, JDIMENSION, JSAMPARRAY output_buf, JDIMENSION *out_row_ctr, JDIMENSION out_rows_avail)
jcopy_sample_rows(JSAMPARRAY input_array, int source_row, JSAMPARRAY output_array, int dest_row, int num_rows, JDIMENSION num_cols)
UINT8 v_expand[MAX_COMPONENTS]
jpeg_component_info JCOEFPTR JSAMPARRAY output_buf
int rowgroup_height[MAX_COMPONENTS]
start_pass_upsample(j_decompress_ptr cinfo)
int_upsample(j_decompress_ptr cinfo, jpeg_component_info *compptr, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
fullsize_upsample(j_decompress_ptr, jpeg_component_info *, JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr)
noop_upsample(j_decompress_ptr, jpeg_component_info *, JSAMPARRAY, JSAMPARRAY *output_data_ptr)
boolean need_context_rows
UINT8 h_expand[MAX_COMPONENTS]
jinit_upsampler(j_decompress_ptr cinfo)
jpeg_component_info * compptr