read_tile_header_lp (j_image_ptr iinfo, jxr_image_plane_header * plane_hdr, jxr_image_plane_vars * plane_vars )
{
/* Check that low pass QPs aren't the same for all tiles */
if (plane_hdr->lp_image_plane_uniform_flag == FALSE) {
UINT8 b;
INPUT_VARS(iinfo);
/* Check if a new QP set is present */
INPUT_BITS((j_common_ptr) iinfo, b, 1, return FALSE);
boolean use_dc_qp_flag = b;
if (use_dc_qp_flag == FALSE) {
/* Get number of low pass QPs */
INPUT_BITS((j_common_ptr) iinfo, b, 4, return FALSE);
plane_vars->num_lp_qps = b + 1;
/* Parse QP set */
INPUT_SYNC(iinfo);
parse_lp_qp( iinfo,
plane_vars->num_components,
plane_vars->num_lp_qps,
&plane_hdr->lp_qp );
}
static boolean handle_app1(j_decompress_ptr cinfo)
{
INT32 length; /* initialized by the macro */
INT32 i;
char neogeo[128];
INPUT_VARS(cinfo);
INPUT_2BYTES(cinfo, length, return false);
length -= 2;
if (length < 16) {
for (i = 0; i < length; i++) {
INPUT_BYTE(cinfo, neogeo[i], return false);
}
length = 0;
if (STREQLEN(neogeo, "NeoGeo", 6)) {
struct NeoGeo_Word *neogeo_word = (struct NeoGeo_Word *)(neogeo + 6);
ibuf_quality = neogeo_word->quality;
}
}
INPUT_SYNC(cinfo); /* do before skip_input_data */
if (length > 0) {
(*cinfo->src->skip_input_data)(cinfo, length);
}
return true;
}
LOCAL boolean get_sof(j_decompress_ptr cinfo, boolean is_prog, boolean is_arith)
/* Process a SOFn marker */
{
INT32 length;
int c, ci;
jpeg_component_info *compptr;
INPUT_VARS(cinfo);
cinfo->progressive_mode = is_prog;
cinfo->arith_code = is_arith;
INPUT_2BYTES(cinfo, length, return FALSE);
INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE);
INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE);
INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE);
INPUT_BYTE(cinfo, cinfo->num_components, return FALSE);
length -= 8;
TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker, (int)cinfo->image_width, (int)cinfo->image_height, cinfo->num_components);
if(cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOF_DUPLICATE);
/* We don't support files in which the image height is initially specified */
/* as 0 and is later redefined by DNL. As long as we have to check that, */
/* might as well have a general sanity check. */
if(cinfo->image_height <= 0 || cinfo->image_width <= 0 || cinfo->num_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
if(length != (cinfo->num_components * 3))
ERREXIT(cinfo, JERR_BAD_LENGTH);
if(cinfo->comp_info == NULL) /* do only once, even if suspend */
cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE, cinfo->num_components * SIZEOF(jpeg_component_info));
for(ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components; ci++, compptr++)
{
compptr->component_index = ci;
INPUT_BYTE(cinfo, compptr->component_id, return FALSE);
INPUT_BYTE(cinfo, c, return FALSE);
compptr->h_samp_factor = (c >> 4) & 15;
compptr->v_samp_factor = (c) & 15;
INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE);
TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT,
compptr->component_id, compptr->h_samp_factor, compptr->v_samp_factor, compptr->quant_tbl_no);
}
cinfo->marker->saw_SOF = TRUE;
INPUT_SYNC(cinfo);
return TRUE;
}
METHODDEF boolean get_app0(j_decompress_ptr cinfo)
/* Process an APP0 marker */
{
#define JFIF_LEN 14
INT32 length;
UINT8 b[JFIF_LEN];
int buffp;
INPUT_VARS(cinfo);
INPUT_2BYTES(cinfo, length, return FALSE);
length -= 2;
/* See if a JFIF APP0 marker is present */
if(length >= JFIF_LEN)
{
for(buffp = 0; buffp < JFIF_LEN; buffp++)
INPUT_BYTE(cinfo, b[buffp], return FALSE);
length -= JFIF_LEN;
if(b[0] == 0x4A && b[1] == 0x46 && b[2] == 0x49 && b[3] == 0x46 && b[4] == 0)
{
/* Found JFIF APP0 marker: check version */
/* Major version must be 1, anything else signals an incompatible change.
* We used to treat this as an error, but now it's a nonfatal warning,
* because some bozo at Hijaak couldn't read the spec.
* Minor version should be 0..2, but process anyway if newer.
*/
if(b[5] != 1)
WARNMS2(cinfo, JWRN_JFIF_MAJOR, b[5], b[6]);
else if(b[6] > 2)
TRACEMS2(cinfo, 1, JTRC_JFIF_MINOR, b[5], b[6]);
/* Save info */
cinfo->saw_JFIF_marker = TRUE;
cinfo->density_unit = b[7];
cinfo->X_density = (b[8] << 8) + b[9];
cinfo->Y_density = (b[10] << 8) + b[11];
TRACEMS3(cinfo, 1, JTRC_JFIF, cinfo->X_density, cinfo->Y_density, cinfo->density_unit);
if(b[12] | b[13])
TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, b[12], b[13]);
if(length != ((INT32) b[12] * (INT32) b[13] * (INT32) 3))
TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int)length);
}
else
{
/* Start of APP0 does not match "JFIF" */
TRACEMS1(cinfo, 1, JTRC_APP0, (int)length + JFIF_LEN);
}
}
else
{
METHODDEF boolean
get_app0 (j_decompress_ptr cinfo)
/* Process an APP0 marker */
{
#define JFIF_LEN 14
INT32 length;
UINT8 b[JFIF_LEN];
int buffp;
INPUT_VARS(cinfo);
INPUT_2BYTES(cinfo, length, return FALSE);
length -= 2;
/* See if a JFIF APP0 marker is present */
if (length >= JFIF_LEN) {
for (buffp = 0; buffp < JFIF_LEN; buffp++)
INPUT_BYTE(cinfo, b[buffp], return FALSE);
length -= JFIF_LEN;
if (b[0]==0x4A && b[1]==0x46 && b[2]==0x49 && b[3]==0x46 && b[4]==0) {
/* Found JFIF APP0 marker: check version */
/* Major version must be 1 */
if (b[5] != 1)
ERREXIT2(cinfo, JERR_JFIF_MAJOR, b[5], b[6]);
/* Minor version should be 0..2, but try to process anyway if newer */
if (b[6] > 2)
TRACEMS2(cinfo, 1, JTRC_JFIF_MINOR, b[5], b[6]);
/* Save info */
cinfo->saw_JFIF_marker = TRUE;
cinfo->density_unit = b[7];
cinfo->X_density = (b[8] << 8) + b[9];
cinfo->Y_density = (b[10] << 8) + b[11];
TRACEMS3(cinfo, 1, JTRC_JFIF,
cinfo->X_density, cinfo->Y_density, cinfo->density_unit);
if (b[12] | b[13])
TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, b[12], b[13]);
if (length != ((INT32) b[12] * (INT32) b[13] * (INT32) 3))
TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, (int) length);
} else {
/* Start of APP0 does not match "JFIF" */
TRACEMS1(cinfo, 1, JTRC_APP0, (int) length + JFIF_LEN);
}
} else {
decode_tile_start (j_image_ptr iinfo, UINT32 * startcode)
{
UINT8 c, cc , ccc;
INPUT_VARS(iinfo);
/* Check the start code */
INPUT_BYTE((j_common_ptr) iinfo,c ,return FALSE);
INPUT_BYTE((j_common_ptr) iinfo,cc ,return FALSE);
INPUT_BYTE((j_common_ptr) iinfo,ccc ,return FALSE);
*startcode = (c << 16) |
(cc << 8) |
(ccc << 0);
/* Read the arbitrary byte. This is ignored, in accordance with the
* specification*/
INPUT_BYTE((j_common_ptr) iinfo,c ,return FALSE);
}
static boolean
handle_app1 (j_decompress_ptr cinfo)
{
INT32 length, i;
char neogeo[128];
INPUT_VARS(cinfo);
length = 0;
INPUT_2BYTES(cinfo, length, return FALSE);
length -= 2;
if (length < 16) {
for (i = 0; i < length; i++) INPUT_BYTE(cinfo, neogeo[i], return FALSE);
length = 0;
if (strncmp(neogeo, "NeoGeo", 6) == 0) memcpy(&ibuf_ftype, neogeo + 6, 4);
ibuf_ftype = BIG_LONG(ibuf_ftype);
}
INPUT_SYNC(cinfo); /* do before skip_input_data */
if (length > 0) (*cinfo->src->skip_input_data) (cinfo, length);
return TRUE;
}
get_sos (j_decompress_ptr cinfo)
/* Process a SOS marker */
{
INT32 length;
int i, ci, n, c, cc;
jpeg_component_info * compptr;
INPUT_VARS(cinfo);
if (! cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOS_NO_SOF);
INPUT_2BYTES(cinfo, length, return FALSE);
INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */
if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN)
ERREXIT(cinfo, JERR_BAD_LENGTH);
TRACEMS1(cinfo, 1, JTRC_SOS, n);
cinfo->comps_in_scan = n;
/* Collect the component-spec parameters */
for (i = 0; i < n; i++) {
INPUT_BYTE(cinfo, cc, return FALSE);
INPUT_BYTE(cinfo, c, return FALSE);
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (cc == compptr->component_id)
goto id_found;
}
ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
id_found:
cinfo->cur_comp_info[i] = compptr;
compptr->dc_tbl_no = (c >> 4) & 15;
compptr->ac_tbl_no = (c ) & 15;
TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,
compptr->dc_tbl_no, compptr->ac_tbl_no);
}
/* Collect the additional scan parameters Ss, Se, Ah/Al. */
INPUT_BYTE(cinfo, c, return FALSE);
cinfo->Ss = c;
INPUT_BYTE(cinfo, c, return FALSE);
cinfo->Se = c;
INPUT_BYTE(cinfo, c, return FALSE);
cinfo->Ah = (c >> 4) & 15;
cinfo->Al = (c ) & 15;
TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo->Ss, cinfo->Se,
cinfo->Ah, cinfo->Al);
/* Prepare to scan data & restart markers */
cinfo->marker->next_restart_num = 0;
/* Count another SOS marker */
cinfo->input_scan_number++;
INPUT_SYNC(cinfo);
return TRUE;
}
LOCAL boolean
get_sos (j_decompress_ptr cinfo)
/* Process a SOS marker */
{
INT32 length;
int i, ci, n, c, cc, ccc;
jpeg_component_info * compptr;
INPUT_VARS(cinfo);
if (! cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOS_NO_SOF);
INPUT_2BYTES(cinfo, length, return FALSE);
INPUT_BYTE(cinfo, n, return FALSE); /* Number of components */
if (length != (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN)
ERREXIT(cinfo, JERR_BAD_LENGTH);
TRACEMS1(cinfo, 1, JTRC_SOS, n);
cinfo->comps_in_scan = n;
/* Collect the component-spec parameters */
for (i = 0; i < n; i++) {
INPUT_BYTE(cinfo, cc, return FALSE);
INPUT_BYTE(cinfo, c, return FALSE);
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
if (cc == compptr->component_id)
goto id_found;
}
ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc);
id_found:
cinfo->cur_comp_info[i] = compptr;
compptr->dc_tbl_no = (c >> 4) & 15;
compptr->ac_tbl_no = (c ) & 15;
TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc,
compptr->dc_tbl_no, compptr->ac_tbl_no);
}
/* Collect the additional scan parameters Ss, Se, Ah/Al.
* Currently we just validate that they are right for sequential JPEG.
* This ought to be an error condition, but we make it a warning because
* there are some baseline files out there with all zeroes in these bytes.
* (Thank you, Logitech :-(.)
*/
INPUT_BYTE(cinfo, c, return FALSE);
INPUT_BYTE(cinfo, cc, return FALSE);
INPUT_BYTE(cinfo, ccc, return FALSE);
if (c != 0 || cc != DCTSIZE2-1 || ccc != 0)
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
/* Prepare to scan data & restart markers */
cinfo->marker->next_restart_num = 0;
INPUT_SYNC(cinfo);
return TRUE;
}
LOCAL boolean
get_sof (j_decompress_ptr cinfo)
/* Process a SOFn marker */
{
INT32 length;
int c, ci;
jpeg_component_info * compptr;
INPUT_VARS(cinfo);
INPUT_2BYTES(cinfo, length, return FALSE);
INPUT_BYTE(cinfo, cinfo->data_precision, return FALSE);
INPUT_2BYTES(cinfo, cinfo->image_height, return FALSE);
INPUT_2BYTES(cinfo, cinfo->image_width, return FALSE);
INPUT_BYTE(cinfo, cinfo->num_components, return FALSE);
length -= 8;
TRACEMS4(cinfo, 1, JTRC_SOF, cinfo->unread_marker,
(int) cinfo->image_width, (int) cinfo->image_height,
cinfo->num_components);
if (cinfo->marker->saw_SOF)
ERREXIT(cinfo, JERR_SOF_DUPLICATE);
/* We don't support files in which the image height is initially specified */
/* as 0 and is later redefined by DNL. As long as we have to check that, */
/* might as well have a general sanity check. */
if (cinfo->image_height <= 0 || cinfo->image_width <= 0
|| cinfo->num_components <= 0)
ERREXIT(cinfo, JERR_EMPTY_IMAGE);
/* Make sure image isn't bigger than I can handle */
if ((long) cinfo->image_height > (long) JPEG_MAX_DIMENSION ||
(long) cinfo->image_width > (long) JPEG_MAX_DIMENSION)
ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION);
/* For now, precision must match compiled-in value... */
if (cinfo->data_precision != BITS_IN_JSAMPLE)
ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo->data_precision);
/* Check that number of components won't exceed internal array sizes */
if (cinfo->num_components > MAX_COMPONENTS)
ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo->num_components,
MAX_COMPONENTS);
if (length != (cinfo->num_components * 3))
ERREXIT(cinfo, JERR_BAD_LENGTH);
if (cinfo->comp_info == NULL) /* do only once, even if suspend */
cinfo->comp_info = (jpeg_component_info *) (*cinfo->mem->alloc_small)
((j_common_ptr) cinfo, JPOOL_IMAGE,
cinfo->num_components * SIZEOF(jpeg_component_info));
for (ci = 0, compptr = cinfo->comp_info; ci < cinfo->num_components;
ci++, compptr++) {
compptr->component_index = ci;
INPUT_BYTE(cinfo, compptr->component_id, return FALSE);
INPUT_BYTE(cinfo, c, return FALSE);
compptr->h_samp_factor = (c >> 4) & 15;
compptr->v_samp_factor = (c ) & 15;
INPUT_BYTE(cinfo, compptr->quant_tbl_no, return FALSE);
TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT,
compptr->component_id, compptr->h_samp_factor,
compptr->v_samp_factor, compptr->quant_tbl_no);
}
cinfo->marker->saw_SOF = TRUE;
INPUT_SYNC(cinfo);
return TRUE;
}