void Mgr_skip_input_data_fcn(j_decompress_ptr cinfo, long num_bytes) {
// Cannot skip negative or 0 bytes.
if (num_bytes <= 0) {
LOGW("skipping 0 bytes in InputStream");
return;
}
SourceManager *src = reinterpret_cast<SourceManager*>(cinfo->src);
if (src->mgr.bytes_in_buffer >= num_bytes) {
src->mgr.bytes_in_buffer -= num_bytes;
src->mgr.next_input_byte += num_bytes;
} else {
// if skipping more bytes than remain in buffer, set skip_bytes
int64_t skip = num_bytes - src->mgr.bytes_in_buffer;
src->mgr.next_input_byte += src->mgr.bytes_in_buffer;
src->mgr.bytes_in_buffer = 0;
int64_t actual = src->inStream->skip(skip);
if (actual < 0) {
ERREXIT(cinfo, JERR_FILE_READ);
}
skip -= actual;
while (skip > 0) {
actual = src->inStream->skip(skip);
if (actual < 0) {
ERREXIT(cinfo, JERR_FILE_READ);
}
skip -= actual;
if (actual == 0) {
// Multiple zero byte skips, likely EOF
WARNMS(cinfo, JWRN_JPEG_EOF);
return;
}
}
}
}
static boolean my_fill_input_buffer (j_decompress_ptr cinfo)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
size_t nbytes;
if (src->src_size > INPUT_BUF_SIZE)
nbytes = INPUT_BUF_SIZE;
else
nbytes = src->src_size;
memcpy (src->buffer, src->src_buffer, nbytes);
src->src_buffer += nbytes;
src->src_size -= nbytes;
if (nbytes <= 0) {
if (src->start_of_file) /* Treat empty input file as fatal error */
ERREXIT(cinfo, JERR_INPUT_EMPTY);
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
static boolean
stdio_fill_input_buffer (j_decompress_ptr cinfo)
{
stdio_src_ptr src = (stdio_src_ptr) cinfo->src;
size_t nbytes;
nbytes = fread (src->buffer, 1, JPEG_PROG_BUF_SIZE, src->infile);
if (nbytes <= 0) {
#if 0
if (src->start_of_file) /* Treat empty input file as fatal error */
ERREXIT(cinfo, JERR_INPUT_EMPTY);
WARNMS(cinfo, JWRN_JPEG_EOF);
#endif
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
fill_input_buffer (j_decompress_ptr cinfo)
{
#ifndef USE_SYMBIAN
my_src_ptr src = (my_src_ptr) cinfo->src;
int nbytes;
nbytes = JFREAD(src->infile, src->buffer, INPUT_BUF_SIZE);
if (nbytes <= 0) {
if (src->start_of_file) /* Treat empty input file as fatal error */
ERREXIT(cinfo, JERR_INPUT_EMPTY);
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
#endif
return TRUE;
}
fill_input_buffer (j_decompress_ptr cinfo) {
freeimage_src_ptr src = (freeimage_src_ptr) cinfo->src;
size_t nbytes = src->m_io->read_proc(src->buffer, 1, INPUT_BUF_SIZE, src->infile);
if (nbytes <= 0) {
if (src->start_of_file) /* Treat empty input file as fatal error */
throw(cinfo, JERR_INPUT_EMPTY);
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
jpeg_read_raw_data (j_decompress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION max_lines)
{
JDIMENSION lines_per_iMCU_row;
if (cinfo->global_state != DSTATE_RAW_OK)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Verify that at least one iMCU row can be returned. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_scaled_size;
if (max_lines < lines_per_iMCU_row)
ERREXIT(cinfo, JERR_BUFFER_SIZE);
/* Decompress directly into user's buffer. */
if (! (*cinfo->coef->decompress_data) (cinfo, data))
return 0; /* suspension forced, can do nothing more */
/* OK, we processed one iMCU row. */
cinfo->output_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
static boolean bmJpegFillInputBuffer( j_decompress_ptr cinfo )
{
BmJpegInputSource * bjis= (BmJpegInputSource *)cinfo->src;
size_t nbytes;
nbytes= sioInReadBytes( bjis->bjisSis,
bjis->bjisReadBuffer, INPUT_BUF_SIZE );
if ( nbytes <= 0 )
{
if ( bjis->bjisAtBeginOfInput ) /* Treat empty input */
/* file as fatal error */
{ ERREXIT( cinfo, JERR_INPUT_EMPTY ); }
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
bjis->bjisReadBuffer[0] = (JOCTET) 0xFF;
bjis->bjisReadBuffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
bjis->pub.next_input_byte= bjis->bjisReadBuffer;
bjis->pub.bytes_in_buffer= nbytes;
bjis->bjisAtBeginOfInput= FALSE;
return TRUE;
}
jpeg_write_scanlines (j_compress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION num_lines)
{
JDIMENSION row_ctr, rows_left;
if (cinfo->global_state != CSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->next_scanline >= cinfo->image_height)
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->next_scanline;
cinfo->progress->pass_limit = (long) cinfo->image_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Give master control module another chance if this is first call to
* jpeg_write_scanlines. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_scanlines.
*/
if (cinfo->master->call_pass_startup)
(*cinfo->master->pass_startup) (cinfo);
/* Ignore any extra scanlines at bottom of image. */
rows_left = cinfo->image_height - cinfo->next_scanline;
if (num_lines > rows_left)
num_lines = rows_left;
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, num_lines);
cinfo->next_scanline += row_ctr;
return row_ctr;
}
fill_input_buffer (j_decompress_ptr cinfo)
{
stream_source_mgr* src = (stream_source_mgr*) cinfo->src;
size_t nbytes;
nbytes = stream_get_callbacks(src->stream)
->read(src->buffer, 1, INPUT_BUF_SIZE, src->stream);
if (nbytes <= 0) {
/* original: Treat empty input file as fatal error
if (src->start_of_file_p)
ERREXIT(cinfo, JERR_INPUT_EMPTY);
*/
ERREXIT(cinfo, JERR_INPUT_EOF);
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file_p = FALSE;
return TRUE;
}
jpeg_read_scanlines (j_decompress_ptr cinfo, JSAMPARRAY scanlines,
JDIMENSION max_lines)
{
JDIMENSION row_ctr;
if (cinfo->global_state != DSTATE_SCANNING)
ERREXIT1(cinfo, JERR_BAD_STATE, cinfo->global_state);
if (cinfo->output_scanline >= cinfo->output_height) {
WARNMS(cinfo, JWRN_TOO_MUCH_DATA);
return 0;
}
/* Call progress monitor hook if present */
if (cinfo->progress != NULL) {
cinfo->progress->pass_counter = (long) cinfo->output_scanline;
cinfo->progress->pass_limit = (long) cinfo->output_height;
(*cinfo->progress->progress_monitor) ((j_common_ptr) cinfo);
}
/* Process some data */
row_ctr = 0;
(*cinfo->main->process_data) (cinfo, scanlines, &row_ctr, max_lines);
cinfo->output_scanline += row_ctr;
return row_ctr;
}
sun_jpeg_fill_input_buffer(j_decompress_ptr cinfo)
{
sun_jpeg_source_ptr src = (sun_jpeg_source_ptr) cinfo->src;
JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
int ret, buflen;
if (src->suspendable) {
return FALSE;
}
if (src->remaining_skip) {
src->pub.skip_input_data(cinfo, 0);
}
RELEASE_ARRAYS(env, src);
buflen = (*env)->GetArrayLength(env, src->hInputBuffer);
ret = (*env)->CallIntMethod(env, src->hInputStream, InputStream_readID,
src->hInputBuffer, 0, buflen);
if ((*env)->ExceptionOccurred(env) || !GET_ARRAYS(env, src)) {
cinfo->err->error_exit((struct jpeg_common_struct *) cinfo);
}
if (ret <= 0) {
/* Silently accept truncated JPEG files */
WARNMS(cinfo, JWRN_JPEG_EOF);
src->inbuf[0] = (JOCTET) 0xFF;
src->inbuf[1] = (JOCTET) JPEG_EOI;
ret = 2;
}
src->pub.next_input_byte = src->inbuf;
src->pub.bytes_in_buffer = ret;
return TRUE;
}
_jpeg_fill_input_buffer(j_decompress_ptr cinfo) {
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
cinfo->src->next_input_byte = fake_EOI;
cinfo->src->bytes_in_buffer = sizeof(fake_EOI);
return TRUE;
}
boolean pgui_jpeg_fill_input_buffer (j_decompress_ptr cinfo)
{
pgui_jpeg_src_ptr src = (pgui_jpeg_src_ptr) cinfo->src;
size_t nbytes;
int size=INPUT_BUF_SIZE;
// make sure we don't read past "size".. since we kept that in the jpeg_data structure,
// artifically increment nbytes to look like it incremented the right size. (BUF_SIZE,
// or remaining bytes left from jpeg_data->size
size = ((g_jpeg_data.size-g_jpeg_data.copied_size) > INPUT_BUF_SIZE) ?
INPUT_BUF_SIZE :
(g_jpeg_data.size - g_jpeg_data.copied_size);
memcpy(src->buffer, g_jpeg_data.lastptr, size);
if(g_jpeg_data.copied_size < (g_jpeg_data.size - INPUT_BUF_SIZE)) {
nbytes=INPUT_BUF_SIZE;
g_jpeg_data.lastptr+=nbytes;
} else {
nbytes=(g_jpeg_data.size - g_jpeg_data.copied_size);
}
g_jpeg_data.copied_size+=nbytes;
// if there is no data, and we have just started, mark an exit
if (nbytes <= 0) {
if (src->start_of_file){ /* Treat empty input file as fatal error */
printf("error: no data!\n");
WARNMS(cinfo, JERR_INPUT_EMPTY);
return FALSE;
}
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
safeboolean
fill_input_buffer (j_decompress_ptr cinfo)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
/* 2.0.12: signed size. Thanks to Geert Jansen */
/* 2.0.14: some platforms (mingw-msys) don't have ssize_t. Call
an int an int. */
int nbytes = 0;
memset (src->buffer, 0, INPUT_BUF_SIZE);
while (nbytes < INPUT_BUF_SIZE)
{
int got = gdGetBuf (src->buffer + nbytes,
INPUT_BUF_SIZE - nbytes,
src->infile);
if ((got == EOF) || (got == 0))
{
/* EOF or error. If we got any data, don't worry about it.
If we didn't, then this is unexpected. */
if (!nbytes)
{
nbytes = -1;
}
break;
}
nbytes += got;
}
if (nbytes <= 0)
{
if (src->start_of_file) /* Treat empty input file as fatal error */
ERREXIT (cinfo, JERR_INPUT_EMPTY);
WARNMS (cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (unsigned char) 0xFF;
src->buffer[1] = (unsigned char) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
METHODDEF void
start_pass_huff_decoder(j_decompress_ptr cinfo)
{
huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
int ci, dctbl, actbl;
jpeg_component_info *compptr;
/* Check that the scan parameters Ss, Se, Ah/Al are OK 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.
*/
if(cinfo->Ss != 0 || cinfo->Se != DCTSIZE2 - 1 ||
cinfo->Ah != 0 || cinfo->Al != 0)
{
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
}
for(ci = 0; ci < cinfo->comps_in_scan; ci++)
{
compptr = cinfo->cur_comp_info[ci];
dctbl = compptr->dc_tbl_no;
actbl = compptr->ac_tbl_no;
/* Make sure requested tables are present */
if(dctbl < 0 || dctbl >= NUM_HUFF_TBLS ||
cinfo->dc_huff_tbl_ptrs[dctbl] == NULL)
{
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dctbl);
}
if(actbl < 0 || actbl >= NUM_HUFF_TBLS ||
cinfo->ac_huff_tbl_ptrs[actbl] == NULL)
{
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl);
}
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[dctbl],
&entropy->dc_derived_tbls[dctbl]);
jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[actbl],
&entropy->ac_derived_tbls[actbl]);
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[ci] = 0;
}
/* Initialize bitread state variables */
entropy->bitstate.bits_left = 0;
entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->bitstate.printed_eod = FALSE;
/* Initialize restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
}
start_pass_huff_decoder (j_decompress_ptr cinfo)
{
huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
int ci, blkn, dctbl, actbl;
d_derived_tbl **pdtbl;
jpeg_component_info * compptr;
/* Check that the scan parameters Ss, Se, Ah/Al are OK 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.
*/
if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 ||
cinfo->Ah != 0 || cinfo->Al != 0)
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[ci];
dctbl = compptr->dc_tbl_no;
actbl = compptr->ac_tbl_no;
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
pdtbl = entropy->dc_derived_tbls + dctbl;
jpeg_make_d_derived_tbl(cinfo, TRUE, dctbl, pdtbl);
pdtbl = entropy->ac_derived_tbls + actbl;
jpeg_make_d_derived_tbl(cinfo, FALSE, actbl, pdtbl);
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[ci] = 0;
}
/* Precalculate decoding info for each block in an MCU of this scan */
for (blkn = 0; blkn < cinfo->blocks_in_MCU; blkn++) {
ci = cinfo->MCU_membership[blkn];
compptr = cinfo->cur_comp_info[ci];
/* Precalculate which table to use for each block */
entropy->dc_cur_tbls[blkn] = entropy->dc_derived_tbls[compptr->dc_tbl_no];
entropy->ac_cur_tbls[blkn] = entropy->ac_derived_tbls[compptr->ac_tbl_no];
/* Decide whether we really care about the coefficient values */
if (compptr->component_needed) {
entropy->dc_needed[blkn] = TRUE;
/* we don't need the ACs if producing a 1/8th-size image */
entropy->ac_needed[blkn] = (compptr->_DCT_scaled_size > 1);
} else {
entropy->dc_needed[blkn] = entropy->ac_needed[blkn] = FALSE;
}
}
/* Initialize bitread state variables */
entropy->bitstate.bits_left = 0;
entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->pub.insufficient_data = FALSE;
/* Initialize restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
}
start_pass_huff_decoder (j_decompress_ptr cinfo)
{
huff_entropy_ptr entropy = (huff_entropy_ptr) cinfo->entropy;
__boundcheck_metadata_store((void *)(&entropy),(void *)((size_t)(&entropy)+sizeof(entropy)*8-1));
int ci;
__boundcheck_metadata_store((void *)(&ci),(void *)((size_t)(&ci)+sizeof(ci)*8-1));
int dctbl;
__boundcheck_metadata_store((void *)(&dctbl),(void *)((size_t)(&dctbl)+sizeof(dctbl)*8-1));
int actbl;
__boundcheck_metadata_store((void *)(&actbl),(void *)((size_t)(&actbl)+sizeof(actbl)*8-1));
jpeg_component_info * compptr;
__boundcheck_metadata_store((void *)(&compptr),(void *)((size_t)(&compptr)+sizeof(compptr)*8-1));
/* Check that the scan parameters Ss, Se, Ah/Al are OK 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.
*/
if (cinfo->Ss != 0 || cinfo->Se != DCTSIZE2-1 ||
cinfo->Ah != 0 || cinfo->Al != 0)
WARNMS(cinfo, JWRN_NOT_SEQUENTIAL);
for (ci = 0; ci < cinfo->comps_in_scan; ci++) {
compptr = cinfo->cur_comp_info[_RV_insert_check(0,4,92,15,"start_pass_huff_decoder",ci)];
dctbl = compptr->dc_tbl_no;
actbl = compptr->ac_tbl_no;
/* Make sure requested tables are present */
if (dctbl < 0 || dctbl >= NUM_HUFF_TBLS ||
cinfo->dc_huff_tbl_ptrs[_RV_insert_check(0,4,97,2,"start_pass_huff_decoder",dctbl)] == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, dctbl);
if (actbl < 0 || actbl >= NUM_HUFF_TBLS ||
cinfo->ac_huff_tbl_ptrs[_RV_insert_check(0,4,100,2,"start_pass_huff_decoder",actbl)] == NULL)
ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, actbl);
/* Compute derived values for Huffman tables */
/* We may do this more than once for a table, but it's not expensive */
jpeg_make_d_derived_tbl(cinfo, cinfo->dc_huff_tbl_ptrs[_RV_insert_check(0,4,104,36,"start_pass_huff_decoder",dctbl)],
& entropy->dc_derived_tbls[_RV_insert_check(0,4,105,10,"start_pass_huff_decoder",dctbl)]);
jpeg_make_d_derived_tbl(cinfo, cinfo->ac_huff_tbl_ptrs[_RV_insert_check(0,4,106,36,"start_pass_huff_decoder",actbl)],
& entropy->ac_derived_tbls[_RV_insert_check(0,4,107,10,"start_pass_huff_decoder",actbl)]);
/* Initialize DC predictions to 0 */
entropy->saved.last_dc_val[_RV_insert_check(0,4,109,5,"start_pass_huff_decoder",ci)] = 0;
}
/* Initialize bitread state variables */
entropy->bitstate.bits_left = 0;
entropy->bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */
entropy->bitstate.printed_eod = FALSE;
/* Initialize restart counter */
entropy->restarts_to_go = cinfo->restart_interval;
}
sun_jpeg_fill_suspended_buffer(j_decompress_ptr cinfo)
{
sun_jpeg_source_ptr src = (sun_jpeg_source_ptr) cinfo->src;
JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
size_t offset, buflen;
int ret;
RELEASE_ARRAYS(env, src);
ret = (*env)->CallIntMethod(env, src->hInputStream,
InputStream_availableID);
if ((*env)->ExceptionOccurred(env) || !GET_ARRAYS(env, src)) {
cinfo->err->error_exit((struct jpeg_common_struct *) cinfo);
}
if (ret < 0 || (unsigned int)ret <= src->remaining_skip) {
return;
}
if (src->remaining_skip) {
src->pub.skip_input_data(cinfo, 0);
}
/* Save the data currently in the buffer */
offset = src->pub.bytes_in_buffer;
if (src->pub.next_input_byte > src->inbuf) {
memmove(src->inbuf, src->pub.next_input_byte, offset);
}
RELEASE_ARRAYS(env, src);
buflen = (*env)->GetArrayLength(env, src->hInputBuffer) - offset;
if (buflen <= 0) {
if (!GET_ARRAYS(env, src)) {
cinfo->err->error_exit((struct jpeg_common_struct *) cinfo);
}
return;
}
ret = (*env)->CallIntMethod(env, src->hInputStream, InputStream_readID,
src->hInputBuffer, offset, buflen);
if ((ret > 0) && ((unsigned int)ret > buflen)) ret = (int)buflen;
if ((*env)->ExceptionOccurred(env) || !GET_ARRAYS(env, src)) {
cinfo->err->error_exit((struct jpeg_common_struct *) cinfo);
}
if (ret <= 0) {
/* Silently accept truncated JPEG files */
WARNMS(cinfo, JWRN_JPEG_EOF);
src->inbuf[offset] = (JOCTET) 0xFF;
src->inbuf[offset + 1] = (JOCTET) JPEG_EOI;
ret = 2;
}
src->pub.next_input_byte = src->inbuf;
src->pub.bytes_in_buffer = ret + offset;
return;
}
jpeg_write_raw_data( j_compress_ptr cinfo, JSAMPIMAGE data,
JDIMENSION num_lines )
{
JDIMENSION lines_per_iMCU_row;
if( cinfo->global_state != CSTATE_RAW_OK )
{
ERREXIT1( cinfo, JERR_BAD_STATE, cinfo->global_state );
}
if( cinfo->next_scanline >= cinfo->image_height )
{
WARNMS( cinfo, JWRN_TOO_MUCH_DATA );
return 0;
}
/* Call progress monitor hook if present */
if( cinfo->progress != NULL )
{
cinfo->progress->pass_counter = ( long ) cinfo->next_scanline;
cinfo->progress->pass_limit = ( long ) cinfo->image_height;
( *cinfo->progress->progress_monitor )( ( j_common_ptr ) cinfo );
}
/* Give master control module another chance if this is first call to
* jpeg_write_raw_data. This lets output of the frame/scan headers be
* delayed so that application can write COM, etc, markers between
* jpeg_start_compress and jpeg_write_raw_data.
*/
if( cinfo->master->call_pass_startup )
{
( *cinfo->master->pass_startup )( cinfo );
}
/* Verify that at least one iMCU row has been passed. */
lines_per_iMCU_row = cinfo->max_v_samp_factor * cinfo->min_DCT_v_scaled_size;
if( num_lines < lines_per_iMCU_row )
{
ERREXIT( cinfo, JERR_BUFFER_SIZE );
}
/* Directly compress the row. */
if( !( *cinfo->coef->compress_data )( cinfo, data ) )
{
/* If compressor did not consume the whole row, suspend processing. */
return 0;
}
/* OK, we processed one iMCU row. */
cinfo->next_scanline += lines_per_iMCU_row;
return lines_per_iMCU_row;
}
boolean ImageFormatJPG::file_fill_input_buffer(j_decompress_ptr decompress) {
FileSource *source = (FileSource*)decompress->src;
size_t bytes = fread(source->buffer,sizeof(char),sizeof(source->buffer),source->file);
if(bytes <= 0) {
if(ftell(source->file) == 0) ERREXIT(decompress,JERR_INPUT_EMPTY);
WARNMS(decompress,JWRN_JPEG_EOF);
source->buffer[0] = (JOCTET)0xff;
source->buffer[1] = (JOCTET)JPEG_EOI;
bytes = 2;
}
source->pub.next_input_byte = source->buffer;
source->pub.bytes_in_buffer = bytes;
return true;
}
static boolean jpegmemsrcmgr_fill_input_buffer(j_decompress_ptr dinfo) {
unsigned char *buf= (unsigned char*) dinfo->src->next_input_byte-2;
/* if we get called, must have run out of data */
WARNMS(dinfo, JWRN_JPEG_EOF);
buf[0]= (JOCTET) 0xFF;
buf[1]= (JOCTET) JPEG_EOI;
dinfo->src->next_input_byte= buf;
dinfo->src->bytes_in_buffer= 2;
return TRUE;
}
fill_input_buffer (j_decompress_ptr cinfo)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Create a fake EOI marker */
src->eoi_buffer[0] = (JOCTET) 0xFF;
src->eoi_buffer[1] = (JOCTET) JPEG_EOI;
src->pub.next_input_byte = src->eoi_buffer;
src->pub.bytes_in_buffer = 2;
return TRUE;
}
fill_input_buffer_ipp (j_decompress_ptr cinfo)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
size_t bytes_left = src->pub.bytes_in_buffer;
size_t bytes_to_read = INPUT_BUF_SIZE - bytes_left;
if(src->start_of_file || cinfo->progressive_mode)
{
return fill_input_buffer(cinfo);
}
memmove(src->buffer,src->pub.next_input_byte,bytes_left);
size_t nbytes
= VSIFReadL(src->buffer + bytes_left, 1, bytes_to_read, src->infile);
if(nbytes <= 0)
{
if(src->start_of_file)
{
/* Treat empty input file as fatal error */
ERREXIT(cinfo, JERR_INPUT_EMPTY);
}
if(src->pub.bytes_in_buffer == 0 && cinfo->unread_marker == 0)
{
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET)0xFF;
src->buffer[1] = (JOCTET)JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = bytes_left + nbytes;
src->start_of_file = FALSE;
return TRUE;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = bytes_left + nbytes;
src->start_of_file = FALSE;
return TRUE;
}
jpeg_undifference6(j_decompress_ptr cinfo, int comp_index,
JDIFFROW diff_buf, JDIFFROW prev_row,
JDIFFROW undiff_buf, JDIMENSION width)
{
#ifdef SUPPORT_DICOMOBJECTS_BUG
unsigned int xindex;
int Ra, Rb, Rc;
int min, max, temp;
SHIFT_TEMPS
if( dicomobjectsbug == -1 )
{
dicomobjectsbug = 0; /* no bug by default */
Rb = GETJSAMPLE(prev_row[0]);
Ra = (diff_buf[0] + PREDICTOR2) & 0xFFFF;
undiff_buf[0] = Ra;
temp = min = max = undiff_buf[0];
for (xindex = 1; xindex < width; xindex++) {
Rc = Rb;
Rb = GETJSAMPLE(prev_row[xindex]);
Ra = (diff_buf[xindex] + PREDICTOR6) & 0xFFFF;
temp = Ra;
min = temp < min ? temp : min;
max = temp > max ? temp : max;
}
if( (max - min) > 50000) /* magic number */
{
dicomobjectsbug = 1;
WARNMS(cinfo, JWRN_SIGNED_ARITH);
}
}
if(dicomobjectsbug)
{
UNDIFFERENCE_2D_BUG(PREDICTOR6_BUG);
}
else
{
UNDIFFERENCE_2D_BUG(PREDICTOR6);
}
#else
SHIFT_TEMPS
UNDIFFERENCE_2D(PREDICTOR6);
#endif
(void)comp_index;(void)cinfo;
}
METHODDEF(boolean) src_fill_buffer(j_decompress_ptr cinfo)
{
SrcPtr src = (SrcPtr)cinfo->src;
static const JOCTET eoi[2] = { 0xFF, JPEG_EOI };
/*
* since jpeg_mem_src fills the buffer with everything we've got,
* jpeg is trying to read beyond end of buffer. return a fake EOI marker.
* note: don't modify input buffer: it might be read-only.
*/
WARNMS(cinfo, JWRN_JPEG_EOF);
src->pub.next_input_byte = eoi;
src->pub.bytes_in_buffer = 2;
return TRUE;
}
static boolean
dctd_fill_input_buffer(j_decompress_ptr dinfo)
{
jpeg_decompress_data *jddp =
(jpeg_decompress_data *) ((char *)dinfo -
offset_of(jpeg_decompress_data, dinfo));
if (!jddp->input_eod)
return FALSE; /* normal case: suspend processing */
/* Reached end of source data without finding EOI */
WARNMS(dinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
dinfo->src->next_input_byte = fake_eoi;
dinfo->src->bytes_in_buffer = 2;
jddp->faked_eoi = true; /* so process routine doesn't use next_input_byte */
return TRUE;
}
fill_input_buffer (j_decompress_ptr cinfo)
{
// since the initial buffer contains all the data that we have,
// if this method is called, it means we're out of data already
// so we make up fake data to keep the decoder alive
my_src_ptr src = (my_src_ptr) cinfo->src;
WARNMS(cinfo, JWRN_JPEG_EOF);
// Insert a fake EOI marker
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = 2;
return TRUE;
}
static boolean fill_mem_input_buffer (j_decompress_ptr cinfo)
{
static const JOCTET mybuffer[4] = {
(JOCTET) 0xFF, (JOCTET) JPEG_EOI, 0, 0
};
/* The whole JPEG data is expected to reside in the supplied memory
* buffer, so any request for more data beyond the given buffer size
* is treated as an error.
*/
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
cinfo->src->next_input_byte = mybuffer;
cinfo->src->bytes_in_buffer = 2;
return true;
}
//-------------------------------------------------------------------------
boolean CFKFileJpg::FillInputBuffer( j_decompress_ptr p_pInfo )
{
size_t nBytes = 0;
CFKFileJpg* pSource = (CFKFileJpg*)p_pInfo->src;
nBytes = pSource->m_pFile->Read( pSource->m_pBuffer, 1, JEPG_FILE_BUF_SIZE );
if( nBytes <= 0 )
{
if( pSource->m_bIsStartOfFile )
ERREXIT( p_pInfo, JERR_INPUT_EMPTY );
WARNMS( p_pInfo, JWRN_JPEG_EOF );
pSource->m_pBuffer[0] = (JOCTET)0xFF;
pSource->m_pBuffer[1] = (JOCTET)JPEG_EOI;
nBytes = 2;
}
pSource->next_input_byte = pSource->m_pBuffer;
pSource->bytes_in_buffer = nBytes;
pSource->m_bIsStartOfFile = false;
return true;
}
/******************************************************************************
*
* Function fill_input_buffer
*
* This is the custom source manager's fill input buffer routine, called by
* the JPEG library whenever it has finished processing the data in the
* source buffer and needs it to be refilled with the next chunk of data.
*
*****************************************************************************/
static boolean fill_input_buffer (
j_decompress_ptr cinfo)
{
stream_src_ptr src = (stream_src_ptr) cinfo->src;
size_t nbytes;
/*
** Since we always process buffer-based streams in a single chunk, the
** only reason read_input_buffer should be called for one is if the data
** in the buffer was truncated or otherwise bogus. If this is the case
** we set nbytes to zero, allocate a new buffer to hold a fake EOI marker
** so the stream buffer isn't overwritten, and let the error-handling
** code below take care of things.
*/
if (src->stream->type == _DtGrBUFFER)
{
nbytes = 0;
src->buffer = (JOCTET *) (*cinfo->mem->alloc_small) (
(j_common_ptr) cinfo, JPOOL_IMAGE,
2 * SIZEOF(JOCTET));
}
else /* _DtGrFILE, read the next chunk of data */
nbytes = _DtGrRead (src->buffer, 1, src->input_buf_size, src->stream);
if (nbytes <= 0)
{
if (src->start_of_file) /* Treat empty input file as fatal error */
ERREXIT(cinfo, JERR_INPUT_EMPTY);
WARNMS(cinfo, JWRN_JPEG_EOF);
/* Insert a fake EOI marker */
src->buffer[0] = (JOCTET) 0xFF;
src->buffer[1] = (JOCTET) JPEG_EOI;
nbytes = 2;
}
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = nbytes;
src->start_of_file = FALSE;
return TRUE;
}
