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Fixed the way T.85/T.85-L0 selection is handled when decoding DCS messages

This commit is contained in:
Steve Underwood 2012-08-03 20:26:30 +08:00
parent ac0eec9de4
commit e35221b981
1 changed files with 9 additions and 10 deletions
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19
libs/spandsp/src/t30.c
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@ -1344,14 +1344,12 @@ static int build_dcs(t30_state_t *s)
set_ctrl_bits(s->dcs_frame, T30_MIN_SCAN_0MS, 21);
break;
#endif
case T4_COMPRESSION_ITU_T85:
set_ctrl_bit(s->dcs_frame, T30_DCS_BIT_T85_MODE);
clr_ctrl_bit(s->dcs_frame, T30_DCS_BIT_T85_L0_MODE);
case T4_COMPRESSION_ITU_T85_L0:
set_ctrl_bit(s->dcs_frame, T30_DCS_BIT_T85_L0_MODE);
set_ctrl_bits(s->dcs_frame, T30_MIN_SCAN_0MS, 21);
break;
case T4_COMPRESSION_ITU_T85_L0:
case T4_COMPRESSION_ITU_T85:
set_ctrl_bit(s->dcs_frame, T30_DCS_BIT_T85_MODE);
set_ctrl_bit(s->dcs_frame, T30_DCS_BIT_T85_L0_MODE);
set_ctrl_bits(s->dcs_frame, T30_MIN_SCAN_0MS, 21);
break;
case T4_COMPRESSION_ITU_T6:
@ -2360,12 +2358,13 @@ static int process_rx_dcs(t30_state_t *s, const uint8_t *msg, int len)
s->image_width = widths[i][dcs_frame[5] & (DISBIT2 | DISBIT1)];
/* Check which compression we will use. */
if (test_ctrl_bit(dcs_frame, T30_DCS_BIT_T85_MODE))
if (test_ctrl_bit(dcs_frame, T30_DCS_BIT_T85_L0_MODE))
{
if (test_ctrl_bit(dcs_frame, T30_DCS_BIT_T85_L0_MODE))
s->line_encoding = T4_COMPRESSION_ITU_T85_L0;
else
s->line_encoding = T4_COMPRESSION_ITU_T85;
s->line_encoding = T4_COMPRESSION_ITU_T85_L0;
}
else if (test_ctrl_bit(dcs_frame, T30_DCS_BIT_T85_MODE))
{
s->line_encoding = T4_COMPRESSION_ITU_T85;
}
else if (test_ctrl_bit(dcs_frame, T30_DCS_BIT_T6_MODE))
{