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More movement towards colour FAXing

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This commit is contained in:
Steve Underwood
2013-05-29 14:47:48 +08:00
parent 3519e0f4c3
commit 3ea625c6ae
19 changed files with 1309 additions and 1023 deletions
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25
libs/spandsp/src/t4_t6_encode.c
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@@ -57,8 +57,8 @@
#include "config.h"
#endif
#include <stdlib.h>
#include <inttypes.h>
#include <stdlib.h>
#include <limits.h>
#include <stdio.h>
#include <fcntl.h>
@@ -983,13 +983,15 @@ SPAN_DECLARE(int) t4_t6_encode_set_encoding(t4_t6_encode_state_t *s, int encodin
switch (encoding)
{
case T4_COMPRESSION_T6:
s->min_bits_per_row = 0;
/* Fall through */
case T4_COMPRESSION_T4_2D:
case T4_COMPRESSION_T4_1D:
s->encoding = encoding;
/* Set this to the default value for the lowest resolution in the T.4 spec. */
s->max_rows_to_next_1d_row = 2;
s->rows_to_next_1d_row = s->max_rows_to_next_1d_row - 1;
s->row_is_2d = FALSE;
s->row_is_2d = (s->encoding == T4_COMPRESSION_T6);
return 0;
}
return -1;
@@ -998,7 +1000,16 @@ SPAN_DECLARE(int) t4_t6_encode_set_encoding(t4_t6_encode_state_t *s, int encodin
SPAN_DECLARE(void) t4_t6_encode_set_min_bits_per_row(t4_t6_encode_state_t *s, int bits)
{
s->min_bits_per_row = bits;
switch (s->encoding)
{
case T4_COMPRESSION_T6:
s->min_bits_per_row = 0;
break;
case T4_COMPRESSION_T4_2D:
case T4_COMPRESSION_T4_1D:
s->min_bits_per_row = bits;
break;
}
}
/*- End of function --------------------------------------------------------*/
@@ -1056,9 +1067,12 @@ SPAN_DECLARE(void) t4_t6_encode_set_max_2d_rows_per_1d_row(t4_t6_encode_state_t
} y_res_table[] =
{
{T4_Y_RESOLUTION_STANDARD, 2},
{T4_Y_RESOLUTION_100, 2},
{T4_Y_RESOLUTION_FINE, 4},
{T4_Y_RESOLUTION_200, 4},
{T4_Y_RESOLUTION_300, 6},
{T4_Y_RESOLUTION_SUPERFINE, 8},
{T4_Y_RESOLUTION_400, 8},
{T4_Y_RESOLUTION_600, 12},
{T4_Y_RESOLUTION_800, 16},
{T4_Y_RESOLUTION_1200, 24},
@@ -1094,7 +1108,7 @@ SPAN_DECLARE(logging_state_t *) t4_t6_encode_get_logging_state(t4_t6_encode_stat
}
/*- End of function --------------------------------------------------------*/
SPAN_DECLARE(int) t4_t6_encode_restart(t4_t6_encode_state_t *s, int image_width)
SPAN_DECLARE(int) t4_t6_encode_restart(t4_t6_encode_state_t *s, int image_width, int image_length)
{
/* Allow for pages being of different width. */
t4_t6_encode_set_image_width(s, image_width);
@@ -1125,6 +1139,7 @@ SPAN_DECLARE(int) t4_t6_encode_restart(t4_t6_encode_state_t *s, int image_width)
SPAN_DECLARE(t4_t6_encode_state_t *) t4_t6_encode_init(t4_t6_encode_state_t *s,
int encoding,
int image_width,
int image_length,
t4_row_read_handler_t handler,
void *user_data)
{
@@ -1142,7 +1157,7 @@ SPAN_DECLARE(t4_t6_encode_state_t *) t4_t6_encode_init(t4_t6_encode_state_t *s,
s->row_read_user_data = user_data;
s->max_rows_to_next_1d_row = 2;
t4_t6_encode_restart(s, image_width);
t4_t6_encode_restart(s, image_width, image_length);
return s;
}