diff options
Diffstat (limited to 'tools/jpeginfo.c')
| -rw-r--r-- | tools/jpeginfo.c | 259 |
1 files changed, 151 insertions, 108 deletions
diff --git a/tools/jpeginfo.c b/tools/jpeginfo.c index eeef88b..4931aef 100644 --- a/tools/jpeginfo.c +++ b/tools/jpeginfo.c @@ -331,7 +331,6 @@ tiffer_next_entry(struct tiffer *self, struct tiffer_entry *entry) if (!self->remaining_fields) return false; - // Note that Multi-Picture Format doesn't require ascending tag order. uint16_t type = entry->type = 0xFFFF; if (!tiffer_u16(self, &entry->tag) || !tiffer_u16(self, &type) || !tiffer_u32(self, &entry->remaining_count)) @@ -359,7 +358,7 @@ tiffer_next_entry(struct tiffer *self, struct tiffer_entry *entry) return true; } -// --- TIFF/Exif/MPF/* tags ---------------------------------------------------- +// --- TIFF/Exif tags ---------------------------------------------------------- struct tiff_value { const char *name; @@ -1360,6 +1359,151 @@ parse_psir(jv o, const uint8_t *p, size_t len) return o; } +// --- Multi-Picture Format ---------------------------------------------------- + +enum { + MPF_MPFVersion = 45056, + MPF_NumberOfImages = 45057, + MPF_MPEntry = 45058, + MPF_ImageUIDList = 45059, + MPF_TotalFrames = 45060, + + MPF_MPIndividualNum = 45313, + MPF_PanOrientation = 45569, + MPF_PanOverlap_H = 45570, + MPF_PanOverlap_V = 45571, + MPF_BaseViewpointNum = 45572, + MPF_ConvergenceAngle = 45573, + MPF_BaselineLength = 45574, + MPF_VerticalDivergence = 45575, + MPF_AxisDistance_X = 45576, + MPF_AxisDistance_Y = 45577, + MPF_AxisDistance_Z = 45578, + MPF_YawAngle = 45579, + MPF_PitchAngle = 45580, + MPF_RollAngle = 45581 +}; + +static struct tiff_entry mpf_entries[] = { + {"MP Format Version Number", MPF_MPFVersion, NULL}, + {"Number of Images", MPF_NumberOfImages, NULL}, + {"MP Entry", MPF_MPEntry, NULL}, + {"Individual Image Unique ID List", MPF_ImageUIDList, NULL}, + {"Total Number of Captured Frames", MPF_TotalFrames, NULL}, + + {"MP Individual Image Number", MPF_MPIndividualNum, NULL}, + {"Panorama Scanning Orientation", MPF_PanOrientation, NULL}, + {"Panorama Horizontal Overlap", MPF_PanOverlap_H, NULL}, + {"Panorama Vertical Overlap", MPF_PanOverlap_V, NULL}, + {"Base Viewpoint Number", MPF_BaseViewpointNum, NULL}, + {"Convergence Angle", MPF_ConvergenceAngle, NULL}, + {"Baseline Length", MPF_BaselineLength, NULL}, + {"Divergence Angle", MPF_VerticalDivergence, NULL}, + {"Horizontal Axis Distance", MPF_AxisDistance_X, NULL}, + {"Vertical Axis Distance", MPF_AxisDistance_Y, NULL}, + {"Collimation Axis Distance", MPF_AxisDistance_Z, NULL}, + {"Yaw Angle", MPF_YawAngle, NULL}, + {"Pitch Angle", MPF_PitchAngle, NULL}, + {"Roll Angle", MPF_RollAngle, NULL}, + {} +}; + +static uint32_t +parse_mpf_mpentry(jv *a, const uint8_t *p, struct tiffer *T) +{ + uint32_t attrs = T->un->u32(p); + uint32_t offset = T->un->u32(p + 8); + + uint32_t type_number = attrs & 0xFFFFFF; + jv type = jv_number(type_number); + switch (type_number) { + break; case 0x030000: type = jv_string("Baseline MP Primary Image"); + break; case 0x010001: type = jv_string("Large Thumbnail - VGA"); + break; case 0x010002: type = jv_string("Large Thumbnail - Full HD"); + break; case 0x020001: type = jv_string("Multi-Frame Image Panorama"); + break; case 0x020002: type = jv_string("Multi-Frame Image Disparity"); + break; case 0x020003: type = jv_string("Multi-Frame Image Multi-Angle"); + break; case 0x000000: type = jv_string("Undefined"); + } + + uint32_t format_number = (attrs >> 24) & 0x7; + jv format = jv_number(format_number); + if (format_number == 0) + format = jv_string("JPEG"); + + *a = jv_array_append(*a, JV_OBJECT( + jv_string("Individual Image Attribute"), JV_OBJECT( + jv_string("Dependent Parent Image"), jv_bool((attrs >> 31) & 1), + jv_string("Dependent Child Image"), jv_bool((attrs >> 30) & 1), + jv_string("Representative Image"), jv_bool((attrs >> 29) & 1), + jv_string("Reserved"), jv_number((attrs >> 27) & 0x3), + jv_string("Image Data Format"), format, + jv_string("MP Type Code"), type + ), + jv_string("Individual Image Size"), + jv_number(T->un->u32(p + 4)), + jv_string("Individual Image Data Offset"), + jv_number(offset), + jv_string("Dependent Image 1 Entry Number"), + jv_number(T->un->u16(p + 12)), + jv_string("Dependent Image 2 Entry Number"), + jv_number(T->un->u16(p + 14)) + )); + + // Don't report non-JPEGs, even though they're unlikely. + return format_number == 0 ? offset : 0; +} + +static jv +parse_mpf_index_entry(jv o, const uint8_t ***offsets, struct tiffer *T, + struct tiffer_entry *entry) +{ + // 5.2.3.3. MP Entry + if (entry->tag != MPF_MPEntry || entry->type != UNDEFINED || + entry->remaining_count % 16) { + return parse_exif_entry(o, T, entry, mpf_entries); + } + + uint32_t count = entry->remaining_count / 16; + jv a = jv_array_sized(count); + const uint8_t **out = *offsets = calloc(sizeof *out, count + 1); + for (uint32_t i = 0; i < count; i++) { + uint32_t offset = parse_mpf_mpentry(&a, entry->p + i * 16, T); + if (offset) + *out++ = T->begin + offset; + } + return jv_set(o, jv_string("MP Entry"), a); +} + +static jv +parse_mpf_index_ifd(const uint8_t ***offsets, struct tiffer *T) +{ + jv ifd = jv_object(); + struct tiffer_entry entry = {}; + while (tiffer_next_entry(T, &entry)) + ifd = parse_mpf_index_entry(ifd, offsets, T, &entry); + return ifd; +} + +static jv +parse_mpf(jv o, const uint8_t ***offsets, const uint8_t *p, size_t len) +{ + struct tiffer T; + if (!tiffer_init(&T, p, len) || !tiffer_next_ifd(&T)) + return add_warning(o, "invalid MPF segment"); + + // First image: IFD0 is Index IFD, any IFD1 is Attribute IFD. + // Other images: IFD0 is Attribute IFD, there is no Index IFD. + if (!*offsets) { + o = add_to_subarray(o, "MPF", parse_mpf_index_ifd(offsets, &T)); + if (!tiffer_next_ifd(&T)) + return o; + } + + // This isn't optimal, but it will do. + return add_to_subarray(o, "MPF", parse_exif_ifd(&T, mpf_entries)); +} + // --- JPEG -------------------------------------------------------------------- // Because the JPEG file format is simple, just do it manually. // See: https://www.w3.org/Graphics/JPEG/itu-t81.pdf @@ -1493,109 +1637,6 @@ struct data { const uint8_t **mpf_offsets, **mpf_next; }; -enum { - MPFVersion = 45056, - NumberOfImages = 45057, - MPEntry = 45058, - ImageUIDList = 45059, - TotalFrames = 45060, -}; - -static jv -parse_mpf_index_entry( - jv o, struct data *data, struct tiffer *T, struct tiffer_entry *entry) -{ - // 5.2.3.3. MP Entry - if (entry->tag != MPEntry || entry->type != UNDEFINED || - entry->remaining_count % 16) { - // TODO(p): Parse the remaining special tags instead. - return parse_exif_entry(o, T, entry, NULL); - } - - uint32_t count = entry->remaining_count / 16; - jv a = jv_array_sized(count); - - const uint8_t **out = data->mpf_next = data->mpf_offsets = - calloc(sizeof *data->mpf_offsets, count + 1); - for (uint32_t i = 0; i < count; i++) { - const uint8_t *p = entry->p + i * 16; - uint32_t attrs = T->un->u32(p); - uint32_t size = T->un->u32(p + 4); - uint32_t offset = T->un->u32(p + 8); - uint16_t dependent1 = T->un->u16(p + 12); - uint16_t dependent2 = T->un->u16(p + 14); - - uint32_t type_number = attrs & 0xFFFFFF; - jv type = jv_number(type_number); - switch (type_number) { - break; case 0x030000: type = jv_string("Baseline MP Primary Image"); - break; case 0x010001: type = jv_string("Large Thumbnail VGA"); - break; case 0x010002: type = jv_string("Large Thumbnail Full HD"); - break; case 0x020001: type = jv_string("Multi-Frame Image Panorama"); - break; case 0x020002: type = jv_string("Multi-Frame Image Disparity"); - break; case 0x020003: type = jv_string("Multi-Frame Image Multi-Angle"); - break; case 0x000000: type = jv_string("Undefined"); - } - - uint32_t format_number = (attrs >> 24) & 0x7; - jv format = jv_number(format_number); - if (format_number == 0) - format = jv_string("JPEG"); - - a = jv_array_append(a, JV_OBJECT( - jv_string("Individual Image Attribute"), JV_OBJECT( - jv_string("Dependent Parent Image"), jv_bool((attrs >> 31) & 1), - jv_string("Dependent Child Image"), jv_bool((attrs >> 30) & 1), - jv_string("Representative Image"), jv_bool((attrs >> 29) & 1), - jv_string("Reserved"), jv_number((attrs >> 27) & 0x3), - jv_string("Image Data Format"), format, - jv_string("MP Type Code"), type - ), - jv_string("Individual Image Size"), jv_number(size), - jv_string("Individual Image Data Offset"), jv_number(offset), - jv_string("Dependent Image 1 Entry Number"), jv_number(dependent1), - jv_string("Dependent Image 2 Entry Number"), jv_number(dependent2) - )); - if (offset) - *out++ = T->begin + offset; - } - return jv_set(o, jv_string("MPEntry"), a); -} - -static jv -parse_mpf_index_ifd(struct data *data, struct tiffer *T) -{ - jv ifd = jv_object(); - struct tiffer_entry entry = {}; - while (tiffer_next_entry(T, &entry)) - ifd = parse_mpf_index_entry(ifd, data, T, &entry); - return ifd; -} - -static jv -parse_mpf_attribute_ifd(struct tiffer *T) -{ - // TODO(p): Parse the special tags instead. - return parse_exif_ifd(T, NULL); -} - -static jv -parse_mpf(jv o, struct data *data, const uint8_t *p, size_t len) -{ - struct tiffer T; - if (!tiffer_init(&T, p, len) || !tiffer_next_ifd(&T)) - return add_warning(o, "invalid MPF segment"); - - // First image: IFD0 is Index IFD, any IFD1 is Attribute IFD. - // Other images: IFD0 is Attribute IFD, there is no Index IFD. - if (!data->mpf_offsets) { - o = add_to_subarray(o, "MPF", parse_mpf_index_ifd(data, &T)); - if (!tiffer_next_ifd(&T)) - return o; - } - return add_to_subarray(o, "MPF", parse_mpf_attribute_ifd(&T)); -} - static void parse_append(uint8_t **buffer, size_t *buffer_len, const uint8_t *p, size_t len) { @@ -1613,7 +1654,8 @@ parse_marker(uint8_t marker, const uint8_t *p, const uint8_t *end, // Found: Random metadata! Multi-Picture Format! if ((data->ended = marker == EOI)) { // TODO(p): Handle Exifs independently--flush the last one. - if (data->mpf_offsets && *data->mpf_next) + if ((data->mpf_next || (data->mpf_next = data->mpf_offsets)) && + *data->mpf_next) return *data->mpf_next++; if (p != end) *o = add_warning(*o, "trailing data"); @@ -1719,7 +1761,7 @@ parse_marker(uint8_t marker, const uint8_t *p, const uint8_t *end, // http://fileformats.archiveteam.org/wiki/Multi-Picture_Format if (marker == APP2 && p - payload >= 8 && !memcmp(payload, "MPF\0", 4)) { payload += 4; - *o = parse_mpf(*o, data, payload, p - payload); + *o = parse_mpf(*o, &data->mpf_offsets, payload, p - payload); } // CIPA DC-006 (Stereo Still Image Format for Digital Cameras) @@ -1805,7 +1847,8 @@ parse_jpeg(jv o, const uint8_t *p, size_t len) break; } if (*p++ != 0xFF || *p == 0) { - o = add_error(o, "no marker found where one was expected"); + if (!data.ended) + o = add_error(o, "no marker found where one was expected"); break; } |