* limitations under the License.
*/
-#include <inttypes.h>
+#define LOG_TAG "camera_metadata"
+
#include <system/camera_metadata.h>
#include <camera_metadata_hidden.h>
-#define LOG_TAG "camera_metadata"
-#include <cutils/log.h>
#include <assert.h>
+#include <errno.h>
+#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
-#include <errno.h>
+
+#include <log/log.h>
#define OK 0
#define ERROR 1
-#define NOT_FOUND -ENOENT
+#define NOT_FOUND (-ENOENT)
#define SN_EVENT_LOG_ID 0x534e4554
#define ALIGN_TO(val, alignment) \
metadata_size_t data_count;
metadata_size_t data_capacity;
metadata_uptrdiff_t data_start; // Offset from camera_metadata
- uint8_t reserved[];
+ uint32_t padding; // padding to 8 bytes boundary
+ metadata_vendor_id_t vendor_id;
};
/**
camera_metadata_rational_t r;
} camera_metadata_data_t;
+_Static_assert(sizeof(metadata_size_t) == 4,
+ "Size of metadata_size_t must be 4");
+_Static_assert(sizeof(metadata_uptrdiff_t) == 4,
+ "Size of metadata_uptrdiff_t must be 4");
+_Static_assert(sizeof(metadata_vendor_id_t) == 8,
+ "Size of metadata_vendor_id_t must be 8");
+_Static_assert(sizeof(camera_metadata_data_t) == 8,
+ "Size of camera_metadata_data_t must be 8");
+
+_Static_assert(offsetof(camera_metadata_buffer_entry_t, tag) == 0,
+ "Offset of tag must be 0");
+_Static_assert(offsetof(camera_metadata_buffer_entry_t, count) == 4,
+ "Offset of count must be 4");
+_Static_assert(offsetof(camera_metadata_buffer_entry_t, data) == 8,
+ "Offset of data must be 8");
+_Static_assert(offsetof(camera_metadata_buffer_entry_t, type) == 12,
+ "Offset of type must be 12");
+_Static_assert(sizeof(camera_metadata_buffer_entry_t) == 16,
+ "Size of camera_metadata_buffer_entry_t must be 16");
+
+_Static_assert(offsetof(camera_metadata_t, size) == 0,
+ "Offset of size must be 0");
+_Static_assert(offsetof(camera_metadata_t, version) == 4,
+ "Offset of version must be 4");
+_Static_assert(offsetof(camera_metadata_t, flags) == 8,
+ "Offset of flags must be 8");
+_Static_assert(offsetof(camera_metadata_t, entry_count) == 12,
+ "Offset of entry_count must be 12");
+_Static_assert(offsetof(camera_metadata_t, entry_capacity) == 16,
+ "Offset of entry_capacity must be 16");
+_Static_assert(offsetof(camera_metadata_t, entries_start) == 20,
+ "Offset of entries_start must be 20");
+_Static_assert(offsetof(camera_metadata_t, data_count) == 24,
+ "Offset of data_count must be 24");
+_Static_assert(offsetof(camera_metadata_t, data_capacity) == 28,
+ "Offset of data_capacity must be 28");
+_Static_assert(offsetof(camera_metadata_t, data_start) == 32,
+ "Offset of data_start must be 32");
+_Static_assert(offsetof(camera_metadata_t, vendor_id) == 40,
+ "Offset of vendor_id must be 40");
+_Static_assert(sizeof(camera_metadata_t) == 48,
+ "Size of camera_metadata_t must be 48");
+
/**
* The preferred alignment of a packet of camera metadata. In general,
* this is the lowest common multiple of the constituents of a metadata
*/
#define MAX_ALIGNMENT(A, B) (((A) > (B)) ? (A) : (B))
#define METADATA_PACKET_ALIGNMENT \
- MAX_ALIGNMENT(MAX_ALIGNMENT(DATA_ALIGNMENT, METADATA_ALIGNMENT), ENTRY_ALIGNMENT);
+ MAX_ALIGNMENT(MAX_ALIGNMENT(DATA_ALIGNMENT, METADATA_ALIGNMENT), ENTRY_ALIGNMENT)
/** Versioning information */
#define CURRENT_METADATA_VERSION 1
size_t memory_needed = calculate_camera_metadata_size(entry_capacity,
data_capacity);
void *buffer = calloc(1, memory_needed);
- return place_camera_metadata(buffer, memory_needed,
- entry_capacity,
- data_capacity);
+ camera_metadata_t *metadata = place_camera_metadata(
+ buffer, memory_needed, entry_capacity, data_capacity);
+ if (!metadata) {
+ /* This should not happen when memory_needed is the same
+ * calculated in this function and in place_camera_metadata.
+ */
+ free(buffer);
+ }
+ return metadata;
}
camera_metadata_t *place_camera_metadata(void *dst,
size_t data_unaligned = (uint8_t*)(get_entries(metadata) +
metadata->entry_capacity) - (uint8_t*)metadata;
metadata->data_start = ALIGN_TO(data_unaligned, DATA_ALIGNMENT);
+ metadata->vendor_id = CAMERA_METADATA_INVALID_VENDOR_ID;
assert(validate_camera_metadata_structure(metadata, NULL) == OK);
return metadata;
// Start buffer list at aligned boundary
memory_needed = ALIGN_TO(memory_needed, DATA_ALIGNMENT);
memory_needed += sizeof(uint8_t[data_count]);
+ // Make sure camera metadata can be stacked in continuous memory
+ memory_needed = ALIGN_TO(memory_needed, METADATA_PACKET_ALIGNMENT);
return memory_needed;
}
metadata->flags = src->flags;
metadata->entry_count = src->entry_count;
metadata->data_count = src->data_count;
+ metadata->vendor_id = src->vendor_id;
memcpy(get_entries(metadata), get_entries(src),
sizeof(camera_metadata_buffer_entry_t[metadata->entry_count]));
if (metadata == NULL) {
ALOGE("%s: metadata is null!", __FUNCTION__);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
+ uintptr_t aligned_ptr = ALIGN_TO(metadata, METADATA_PACKET_ALIGNMENT);
+ const uintptr_t alignmentOffset = aligned_ptr - (uintptr_t) metadata;
+
// Check that the metadata pointer is well-aligned first.
{
static const struct {
};
for (size_t i = 0; i < sizeof(alignments)/sizeof(alignments[0]); ++i) {
- uintptr_t aligned_ptr = ALIGN_TO(metadata, alignments[i].alignment);
+ uintptr_t aligned_ptr = ALIGN_TO((uintptr_t) metadata + alignmentOffset,
+ alignments[i].alignment);
- if ((uintptr_t)metadata != aligned_ptr) {
+ if ((uintptr_t)metadata + alignmentOffset != aligned_ptr) {
ALOGE("%s: Metadata pointer is not aligned (actual %p, "
- "expected %p) to type %s",
+ "expected %p, offset %" PRIuPTR ") to type %s",
__FUNCTION__, metadata,
- (void*)aligned_ptr, alignments[i].name);
- return ERROR;
+ (void*)aligned_ptr, alignmentOffset, alignments[i].name);
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
}
}
if (expected_size != NULL && metadata->size > *expected_size) {
ALOGE("%s: Metadata size (%" PRIu32 ") should be <= expected size (%zu)",
__FUNCTION__, metadata->size, *expected_size);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
if (metadata->entry_count > metadata->entry_capacity) {
ALOGE("%s: Entry count (%" PRIu32 ") should be <= entry capacity "
"(%" PRIu32 ")",
__FUNCTION__, metadata->entry_count, metadata->entry_capacity);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
if (metadata->data_count > metadata->data_capacity) {
"(%" PRIu32 ")",
__FUNCTION__, metadata->data_count, metadata->data_capacity);
android_errorWriteLog(SN_EVENT_LOG_ID, "30591838");
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
const metadata_uptrdiff_t entries_end =
__FUNCTION__,
(metadata->entries_start + metadata->entry_capacity),
metadata->data_start);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
const metadata_uptrdiff_t data_end =
__FUNCTION__,
(metadata->data_start + metadata->data_capacity),
metadata->size);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
// Validate each entry
for (size_t i = 0; i < entry_count; ++i) {
- if ((uintptr_t)&entries[i] != ALIGN_TO(&entries[i], ENTRY_ALIGNMENT)) {
+ if ((uintptr_t)&entries[i] + alignmentOffset !=
+ ALIGN_TO((uintptr_t)&entries[i] + alignmentOffset, ENTRY_ALIGNMENT)) {
ALOGE("%s: Entry index %zu had bad alignment (address %p),"
" expected alignment %zu",
__FUNCTION__, i, &entries[i], ENTRY_ALIGNMENT);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
camera_metadata_buffer_entry_t entry = entries[i];
if (entry.type >= NUM_TYPES) {
ALOGE("%s: Entry index %zu had a bad type %d",
__FUNCTION__, i, entry.type);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
// TODO: fix vendor_tag_ops across processes so we don't need to special
// case vendor-specific tags
uint32_t tag_section = entry.tag >> 16;
- int tag_type = get_camera_metadata_tag_type(entry.tag);
+ int tag_type = get_local_camera_metadata_tag_type(entry.tag, metadata);
if (tag_type != (int)entry.type && tag_section < VENDOR_SECTION) {
ALOGE("%s: Entry index %zu had tag type %d, but the type was %d",
__FUNCTION__, i, tag_type, entry.type);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
size_t data_size;
entry.count) != OK) {
ALOGE("%s: Entry data size is invalid. type: %u count: %u", __FUNCTION__, entry.type,
entry.count);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
if (data_size != 0) {
(camera_metadata_data_t*) (get_data(metadata) +
entry.data.offset);
- if ((uintptr_t)data != ALIGN_TO(data, DATA_ALIGNMENT)) {
+ if ((uintptr_t)data + alignmentOffset !=
+ ALIGN_TO((uintptr_t)data + alignmentOffset, DATA_ALIGNMENT)) {
ALOGE("%s: Entry index %zu had bad data alignment (address %p),"
" expected align %zu, (tag name %s, data size %zu)",
__FUNCTION__, i, data, DATA_ALIGNMENT,
- get_camera_metadata_tag_name(entry.tag) ?: "unknown",
- data_size);
- return ERROR;
+ get_local_camera_metadata_tag_name(entry.tag, metadata) ?
+ : "unknown", data_size);
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
size_t data_entry_end = entry.data.offset + data_size;
ALOGE("%s: Entry index %zu data ends (%zu) beyond the capacity "
"%" PRIu32, __FUNCTION__, i, data_entry_end,
metadata->data_capacity);
- return ERROR;
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
} else if (entry.count == 0) {
if (entry.data.offset != 0) {
ALOGE("%s: Entry index %zu had 0 items, but offset was non-0 "
"(%" PRIu32 "), tag name: %s", __FUNCTION__, i, entry.data.offset,
- get_camera_metadata_tag_name(entry.tag) ?: "unknown");
- return ERROR;
+ get_local_camera_metadata_tag_name(entry.tag, metadata) ? : "unknown");
+ return CAMERA_METADATA_VALIDATION_ERROR;
}
} // else data stored inline, so we look at value which can be anything.
}
- return OK;
+ if (alignmentOffset == 0) {
+ return OK;
+ }
+ return CAMERA_METADATA_VALIDATION_SHIFTED;
}
int append_camera_metadata(camera_metadata_t *dst,
if (dst->entry_capacity < src->entry_count + dst->entry_count) return ERROR;
if (dst->data_capacity < src->data_count + dst->data_count) return ERROR;
+ if ((dst->vendor_id != CAMERA_METADATA_INVALID_VENDOR_ID) &&
+ (src->vendor_id != CAMERA_METADATA_INVALID_VENDOR_ID)) {
+ if (dst->vendor_id != src->vendor_id) {
+ ALOGE("%s: Append for metadata from different vendors is"
+ "not supported!", __func__);
+ return ERROR;
+ }
+ }
+
memcpy(get_entries(dst) + dst->entry_count, get_entries(src),
sizeof(camera_metadata_buffer_entry_t[src->entry_count]));
memcpy(get_data(dst) + dst->data_count, get_data(src),
dst->entry_count += src->entry_count;
dst->data_count += src->data_count;
+ if (dst->vendor_id == CAMERA_METADATA_INVALID_VENDOR_ID) {
+ dst->vendor_id = src->vendor_id;
+ }
+
assert(validate_camera_metadata_structure(dst, NULL) == OK);
return OK;
}
const void *data,
size_t data_count) {
- int type = get_camera_metadata_tag_type(tag);
+ int type = get_local_camera_metadata_tag_type(tag, dst);
if (type == -1) {
ALOGE("%s: Unknown tag %04x.", __FUNCTION__, tag);
return ERROR;
}
static const vendor_tag_ops_t *vendor_tag_ops = NULL;
+static const struct vendor_tag_cache_ops *vendor_cache_ops = NULL;
-const char *get_camera_metadata_section_name(uint32_t tag) {
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+const char *get_local_camera_metadata_section_name_vendor_id(uint32_t tag,
+ metadata_vendor_id_t id) {
uint32_t tag_section = tag >> 16;
- if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
+ if (tag_section >= VENDOR_SECTION && vendor_cache_ops != NULL &&
+ id != CAMERA_METADATA_INVALID_VENDOR_ID) {
+ return vendor_cache_ops->get_section_name(tag, id);
+ } else if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
return vendor_tag_ops->get_section_name(
vendor_tag_ops,
tag);
return camera_metadata_section_names[tag_section];
}
-const char *get_camera_metadata_tag_name(uint32_t tag) {
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+const char *get_local_camera_metadata_tag_name_vendor_id(uint32_t tag,
+ metadata_vendor_id_t id) {
uint32_t tag_section = tag >> 16;
- if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
+ if (tag_section >= VENDOR_SECTION && vendor_cache_ops != NULL &&
+ id != CAMERA_METADATA_INVALID_VENDOR_ID) {
+ return vendor_cache_ops->get_tag_name(tag, id);
+ } else if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
return vendor_tag_ops->get_tag_name(
vendor_tag_ops,
tag);
return tag_info[tag_section][tag_index].tag_name;
}
-int get_camera_metadata_tag_type(uint32_t tag) {
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+int get_local_camera_metadata_tag_type_vendor_id(uint32_t tag,
+ metadata_vendor_id_t id) {
uint32_t tag_section = tag >> 16;
- if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
+ if (tag_section >= VENDOR_SECTION && vendor_cache_ops != NULL &&
+ id != CAMERA_METADATA_INVALID_VENDOR_ID) {
+ return vendor_cache_ops->get_tag_type(tag, id);
+ } else if (tag_section >= VENDOR_SECTION && vendor_tag_ops != NULL) {
return vendor_tag_ops->get_tag_type(
vendor_tag_ops,
tag);
return tag_info[tag_section][tag_index].tag_type;
}
+const char *get_camera_metadata_section_name(uint32_t tag) {
+ return get_local_camera_metadata_section_name(tag, NULL);
+}
+
+const char *get_camera_metadata_tag_name(uint32_t tag) {
+ return get_local_camera_metadata_tag_name(tag, NULL);
+}
+
+int get_camera_metadata_tag_type(uint32_t tag) {
+ return get_local_camera_metadata_tag_type(tag, NULL);
+}
+
+const char *get_local_camera_metadata_section_name(uint32_t tag,
+ const camera_metadata_t *meta) {
+ metadata_vendor_id_t id = (NULL == meta) ? CAMERA_METADATA_INVALID_VENDOR_ID :
+ meta->vendor_id;
+
+ return get_local_camera_metadata_section_name_vendor_id(tag, id);
+}
+
+const char *get_local_camera_metadata_tag_name(uint32_t tag,
+ const camera_metadata_t *meta) {
+ metadata_vendor_id_t id = (NULL == meta) ? CAMERA_METADATA_INVALID_VENDOR_ID :
+ meta->vendor_id;
+
+ return get_local_camera_metadata_tag_name_vendor_id(tag, id);
+}
+
+int get_local_camera_metadata_tag_type(uint32_t tag,
+ const camera_metadata_t *meta) {
+ metadata_vendor_id_t id = (NULL == meta) ? CAMERA_METADATA_INVALID_VENDOR_ID :
+ meta->vendor_id;
+
+ return get_local_camera_metadata_tag_type_vendor_id(tag, id);
+}
+
int set_camera_metadata_vendor_tag_ops(const vendor_tag_query_ops_t* ops) {
// **DEPRECATED**
(void) ops;
return OK;
}
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+int set_camera_metadata_vendor_cache_ops(
+ const struct vendor_tag_cache_ops *query_cache_ops) {
+ vendor_cache_ops = query_cache_ops;
+ return OK;
+}
+
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+void set_camera_metadata_vendor_id(camera_metadata_t *meta,
+ metadata_vendor_id_t id) {
+ if (NULL != meta) {
+ meta->vendor_id = id;
+ }
+}
+
+// Declared in system/media/private/camera/include/camera_metadata_hidden.h
+metadata_vendor_id_t get_camera_metadata_vendor_id(
+ const camera_metadata_t *meta) {
+ metadata_vendor_id_t ret = CAMERA_METADATA_INVALID_VENDOR_ID;
+
+ if (NULL != meta) {
+ ret = meta->vendor_id;
+ }
+
+ return ret;
+}
+
static void print_data(int fd, const uint8_t *data_ptr, uint32_t tag, int type,
int count,
int indentation);
for (i=0; i < metadata->entry_count; i++, entry++) {
const char *tag_name, *tag_section;
- tag_section = get_camera_metadata_section_name(entry->tag);
+ tag_section = get_local_camera_metadata_section_name(entry->tag, metadata);
if (tag_section == NULL) {
tag_section = "unknownSection";
}
- tag_name = get_camera_metadata_tag_name(entry->tag);
+ tag_name = get_local_camera_metadata_tag_name(entry->tag, metadata);
if (tag_name == NULL) {
tag_name = "unknownTag";
}
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