-
-#include "main.h"
+/*
+ * Geeqie
+ * (C) 2004 John Ellis
+ * Copyright (C) 2008 - 2011 The Geeqie Team
+ *
+ * Author: Vladimir Nadvornik
+ *
+ * This software is released under the GNU General Public License (GNU GPL).
+ * Please read the included file COPYING for more information.
+ * This software comes with no warranty of any kind, use at your own risk!
+ */
+
+#include "main.h"
#include "jpeg_parser.h"
-gboolean jpeg_segment_find(guchar *data, guint size,
+gboolean jpeg_segment_find(const guchar *data, guint size,
guchar app_marker, const gchar *magic, guint magic_len,
guint *seg_offset, guint *seg_length)
{
guint offset = 0;
guint length = 0;
- while (marker != app_marker &&
- marker != JPEG_MARKER_EOI)
+ while (marker != JPEG_MARKER_EOI)
{
offset += length;
length = 2;
{
if (offset + 4 >= size) return FALSE;
length += ((guint)data[offset + 2] << 8) + data[offset + 3];
- }
- }
- if (marker == app_marker &&
- offset + length < size &&
- length >= 4 + magic_len &&
- memcmp(data + offset + 4, magic, magic_len) == 0)
- {
- *seg_offset = offset + 4;
- *seg_length = length - 4;
- return TRUE;
+ if (marker == app_marker &&
+ offset + length < size &&
+ length >= 4 + magic_len &&
+ memcmp(data + offset + 4, magic, magic_len) == 0)
+ {
+ *seg_offset = offset + 4;
+ *seg_length = length - 4;
+ return TRUE;
+ }
+ }
}
-
return FALSE;
}
-guint16 tiff_byte_get_int16(guchar *f, TiffByteOrder bo)
+guint16 tiff_byte_get_int16(const guchar *f, TiffByteOrder bo)
{
guint16 align_buf;
return GUINT16_FROM_BE(align_buf);
}
-guint32 tiff_byte_get_int32(guchar *f, TiffByteOrder bo)
+guint32 tiff_byte_get_int32(const guchar *f, TiffByteOrder bo)
{
guint32 align_buf;
memcpy(f, &align_buf, sizeof(guint32));
}
-gint tiff_directory_offset(guchar *data, const guint len,
+gint tiff_directory_offset(const guchar *data, const guint len,
guint *offset, TiffByteOrder *bo)
{
if (len < 8) return FALSE;
return (*offset < len);
}
-typedef gint (* FuncParseIFDEntry)(guchar *tiff, guint offset,
+typedef gint (* FuncParseIFDEntry)(const guchar *tiff, guint offset,
guint size, TiffByteOrder bo,
gpointer data);
-gint tiff_parse_IFD_table(guchar *tiff, guint offset,
+gint tiff_parse_IFD_table(const guchar *tiff, guint offset,
guint size, TiffByteOrder bo,
guint *next_offset,
FuncParseIFDEntry parse_entry, gpointer data)
count = tiff_byte_get_int16(tiff + offset, bo);
offset += 2;
-printf("count %d\n", count);
/* Entries and next IFD offset must be readable */
if (size < offset + count * TIFF_TIFD_SIZE + 4) return -1;
}
next = tiff_byte_get_int32(tiff + offset + count * TIFF_TIFD_SIZE, bo);
-printf("next %d\n", next);
if (next_offset) *next_offset = next;
return 0;
}
-static gint mpo_parse_Index_IFD_entry(guchar *tiff, guint offset,
+static gint mpo_parse_Index_IFD_entry(const guchar *tiff, guint offset,
guint size, TiffByteOrder bo,
gpointer data)
{
format = tiff_byte_get_int16(tiff + offset + TIFF_TIFD_OFFSET_FORMAT, bo);
count = tiff_byte_get_int32(tiff + offset + TIFF_TIFD_OFFSET_COUNT, bo);
data_val = tiff_byte_get_int32(tiff + offset + TIFF_TIFD_OFFSET_DATA, bo);
-printf("tag %x format %x count %x data_val %x\n", tag, format, count, data_val);
-
- if (tag == 0xb000)
- {
- mpo->version = data_val;
- }
- else if (tag == 0xb001)
- {
- mpo->num_images = data_val;
- }
+ DEBUG_1(" tag %x format %x count %x data_val %x", tag, format, count, data_val);
+
+ if (tag == 0xb000)
+ {
+ mpo->version = data_val;
+ DEBUG_1(" mpo version %x", mpo->version);
+ }
+ else if (tag == 0xb001)
+ {
+ mpo->num_images = data_val;
+ DEBUG_1(" num images %x", mpo->num_images);
+ }
else if (tag == 0xb002)
{
guint i;
mpo->images[i].dep1 = tiff_byte_get_int16(tiff + data_offset + i * 16 + 12, bo);
mpo->images[i].dep2 = tiff_byte_get_int16(tiff + data_offset + i * 16 + 14, bo);
- if (i == 0)
+ if (i == 0)
{
mpo->images[i].offset = 0;
}
else
{
- mpo->images[i].offset += mpo->mpo_offset;
- }
+ mpo->images[i].offset += mpo->mpo_offset;
+ }
- printf("img %x %x %x\n", image_attr, mpo->images[i].length, mpo->images[i].offset);
+ DEBUG_1(" image %x %x %x", image_attr, mpo->images[i].length, mpo->images[i].offset);
}
}
return 0;
}
-MPOData *jpeg_get_mpo_data(guchar *data, guint size)
+static gint mpo_parse_Attributes_IFD_entry(const guchar *tiff, guint offset,
+ guint size, TiffByteOrder bo,
+ gpointer data)
+{
+ guint tag;
+ guint format;
+ guint count;
+ guint data_val;
+
+ MPOEntry *mpe = data;
+
+ tag = tiff_byte_get_int16(tiff + offset + TIFF_TIFD_OFFSET_TAG, bo);
+ format = tiff_byte_get_int16(tiff + offset + TIFF_TIFD_OFFSET_FORMAT, bo);
+ count = tiff_byte_get_int32(tiff + offset + TIFF_TIFD_OFFSET_COUNT, bo);
+ data_val = tiff_byte_get_int32(tiff + offset + TIFF_TIFD_OFFSET_DATA, bo);
+ DEBUG_1(" tag %x format %x count %x data_val %x", tag, format, count, data_val);
+
+ switch (tag)
+ {
+ case 0xb000:
+ mpe->MPFVersion = data_val;
+ DEBUG_1(" mpo version %x", data_val);
+ break;
+ case 0xb101:
+ mpe->MPIndividualNum = data_val;
+ DEBUG_1(" Individual Image Number %x", mpe->MPIndividualNum);
+ break;
+ case 0xb201:
+ mpe->PanOrientation = data_val;
+ break;
+/*
+
+FIXME:
+Panorama Scanning Orientation PanOrientation 45569 B201 LONG 1
+Panorama Horizontal Overlap PanOverlap_H 45570 B202 RATIONAL 1
+Panorama Vertical Overlap PanOverlap_V 45571 B203 RATIONAL 1
+Base Viewpoint Number BaseViewpointNum 45572 B204 LONG 1
+Convergence Angle ConvergenceAngle 45573 B205 SRATIONAL 1
+Baseline Length BaselineLength 45574 B206 RATIONAL 1
+Divergence Angle VerticalDivergence 45575 B207 SRATIONAL 1
+Horizontal Axis Distance AxisDistance_X 45576 B208 SRATIONAL 1
+Vertical Axis Distance AxisDistance_Y 45577 B209 SRATIONAL 1
+Collimation Axis Distance AxisDistance_Z 45578 B20A SRATIONAL 1
+Yaw Angle YawAngle 45579 B20B SRATIONAL 1
+Pitch Angle PitchAngle 45580 B20C SRATIONAL 1
+Roll Angle RollAngle 45581 B20D
+ */
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+MPOData *jpeg_get_mpo_data(const guchar *data, guint size)
{
guint seg_offset;
guint seg_size;
if (jpeg_segment_find(data, size, JPEG_MARKER_APP2, "MPF\x00", 4, &seg_offset, &seg_size) && seg_size >16)
{
guint offset;
+ guint next_offset;
TiffByteOrder bo;
MPOData *mpo;
guint i;
- printf("mpo signature found at %x\n", seg_offset);
- data += seg_offset + 4;
+ DEBUG_1("mpo signature found at %x", seg_offset);
+ seg_offset += 4;
seg_size -= 4;
- if (!tiff_directory_offset(data, seg_size, &offset, &bo)) return NULL;
+ if (!tiff_directory_offset(data + seg_offset, seg_size, &offset, &bo)) return NULL;
mpo = g_new0(MPOData, 1);
- mpo->mpo_offset = seg_offset + 4;
+ mpo->mpo_offset = seg_offset;
- tiff_parse_IFD_table(data, offset , seg_size, bo, NULL, mpo_parse_Index_IFD_entry, (gpointer)mpo);
+ tiff_parse_IFD_table(data + seg_offset, offset , seg_size, bo, &next_offset, mpo_parse_Index_IFD_entry, (gpointer)mpo);
if (!mpo->images) mpo->num_images = 0;
+
for (i = 0; i < mpo->num_images; i++)
{
if (mpo->images[i].offset + mpo->images[i].length > size)
{
mpo->num_images = i;
- DEBUG_1("MPO file truncated to %d valid images", i);
+ DEBUG_1("MPO file truncated to %d valid images, %d %d", i, mpo->images[i].offset + mpo->images[i].length, size);
break;
}
}
+
+ for (i = 0; i < mpo->num_images; i++)
+ {
+ if (i == 0)
+ {
+ offset = next_offset;
+ }
+ else
+ {
+ if (!jpeg_segment_find(data + mpo->images[i].offset, mpo->images[i].length, JPEG_MARKER_APP2, "MPF\x00", 4, &seg_offset, &seg_size) || seg_size <=16)
+ {
+ DEBUG_1("MPO image %d: MPO signature not found", i);
+ continue;
+ }
+
+ seg_offset += 4;
+ seg_size -= 4;
+ if (!tiff_directory_offset(data + mpo->images[i].offset + seg_offset, seg_size, &offset, &bo))
+ {
+ DEBUG_1("MPO image %d: invalid directory offset", i);
+ continue;
+ }
+
+ }
+ tiff_parse_IFD_table(data + mpo->images[i].offset + seg_offset, offset , seg_size, bo, NULL, mpo_parse_Attributes_IFD_entry, (gpointer)&mpo->images[i]);
+ }
+
return mpo;
}
return NULL;
}
+
+void jpeg_mpo_data_free(MPOData *mpo)
+{
+ if (mpo)
+ {
+ if (mpo->images) g_free(mpo->images);
+ g_free(mpo);
+ }
+}
+
+
+/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff