M_SOF1 = 0xc1,
M_SOF2 = 0xc2,
M_SOF3 = 0xc3,
-
+
M_SOF5 = 0xc5,
M_SOF6 = 0xc6,
M_SOF7 = 0xc7,
-
+
M_JPG = 0xc8,
M_SOF9 = 0xc9,
M_SOF10 = 0xca,
M_SOF11 = 0xcb,
-
+
M_SOF13 = 0xcd,
M_SOF14 = 0xce,
M_SOF15 = 0xcf,
-
+
M_DHT = 0xc4,
-
+
M_DAC = 0xcc,
-
+
M_RST0 = 0xd0,
M_RST1 = 0xd1,
M_RST2 = 0xd2,
M_RST5 = 0xd5,
M_RST6 = 0xd6,
M_RST7 = 0xd7,
-
+
M_SOI = 0xd8,
M_EOI = 0xd9,
M_SOS = 0xda,
M_DRI = 0xdd,
M_DHP = 0xde,
M_EXP = 0xdf,
-
+
M_APP0 = 0xe0,
M_APP1 = 0xe1,
M_APP2 = 0xe2,
M_APP13 = 0xed,
M_APP14 = 0xee,
M_APP15 = 0xef,
-
+
M_JPG0 = 0xf0,
M_JPG13 = 0xfd,
M_COM = 0xfe,
-
+
M_TEM = 0x01,
-
+
M_ERROR = 0x100
} JPEG_MARKER;
{
JHUFF_TBL * htbl;
int length, i;
-
+
if (is_ac) {
htbl = cinfo->ac_huff_tbl_ptrs[index];
index += 0x10; /* output index has AC bit set */
if (htbl == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, index);
-
+
if (! htbl->sent_table) {
emit_marker(cinfo, M_DHT);
-
+
length = 0;
for (i = 1; i <= 16; i++)
length += htbl->bits[i];
-
+
emit_2bytes(cinfo, length + 2 + 1 + 16);
emit_byte(cinfo, index);
-
+
for (i = 1; i <= 16; i++)
emit_byte(cinfo, htbl->bits[i]);
-
+
for (i = 0; i < length; i++)
emit_byte(cinfo, htbl->huffval[i]);
-
+
htbl->sent_table = TRUE;
}
}
char ac_in_use[NUM_ARITH_TBLS];
int length, i;
jpeg_component_info *compptr;
-
+
for (i = 0; i < NUM_ARITH_TBLS; i++)
dc_in_use[i] = ac_in_use[i] = 0;
-
+
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
dc_in_use[compptr->dc_tbl_no] = 1;
ac_in_use[compptr->ac_tbl_no] = 1;
}
-
+
length = 0;
for (i = 0; i < NUM_ARITH_TBLS; i++)
length += dc_in_use[i] + ac_in_use[i];
-
+
emit_marker(cinfo, M_DAC);
-
+
emit_2bytes(cinfo, length*2 + 2);
-
+
for (i = 0; i < NUM_ARITH_TBLS; i++) {
if (dc_in_use[i]) {
emit_byte(cinfo, i);
/* Emit a DRI marker */
{
emit_marker(cinfo, M_DRI);
-
+
emit_2bytes(cinfo, 4); /* fixed length */
emit_2bytes(cinfo, (int) cinfo->restart_interval);
{
int ci;
jpeg_component_info *compptr;
-
+
emit_marker(cinfo, code);
-
+
emit_2bytes(cinfo, 3 * cinfo->num_components + 2 + 5 + 1); /* length */
/* Make sure image isn't bigger than SOF field can handle */
{
int i, td, ta;
jpeg_component_info *compptr;
-
+
emit_marker(cinfo, M_SOS);
-
+
emit_2bytes(cinfo, 2 * cinfo->comps_in_scan + 2 + 1 + 3); /* length */
-
+
emit_byte(cinfo, cinfo->comps_in_scan);
-
+
for (i = 0; i < cinfo->comps_in_scan; i++) {
compptr = cinfo->cur_comp_info[i];
emit_byte(cinfo, compptr->component_id);
* Thumbnail X size (1 byte)
* Thumbnail Y size (1 byte)
*/
-
+
emit_marker(cinfo, M_APP0);
-
+
emit_2bytes(cinfo, 2 + 4 + 1 + 2 + 1 + 2 + 2 + 1 + 1); /* length */
emit_byte(cinfo, 0x4A); /* Identifier: ASCII "JFIF" */
* YCbCr, 2 if it's YCCK, 0 otherwise. Adobe's definition has to do with
* whether the encoder performed a transformation, which is pretty useless.
*/
-
+
emit_marker(cinfo, M_APP14);
-
+
emit_2bytes(cinfo, 2 + 5 + 2 + 2 + 2 + 1); /* length */
emit_byte(cinfo, 0x41); /* Identifier: ASCII "Adobe" */
int ci, prec;
boolean is_baseline;
jpeg_component_info *compptr;
-
+
/* Emit DQT for each quantization table.
* Note that emit_dqt() suppresses any duplicate tables.
*/