status_t CameraMetadata::update(uint32_t tag, const void *data,
size_t data_count) {
status_t res;
int type = get_camera_metadata_tag_type(tag);
if (type == -1) {
ALOGE("%s: Tag %d not found", __FUNCTION__, tag);
return BAD_VALUE;
}
size_t data_size = calculate_camera_metadata_entry_data_size(type,
data_count);
res = resizeIfNeeded(1, data_size);
if (res == OK) {
camera_metadata_entry_t entry;
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (res == NAME_NOT_FOUND) {
res = add_camera_metadata_entry(mBuffer,
tag, data, data_count);
} else if (res == OK) {
res = update_camera_metadata_entry(mBuffer,
entry.index, data, data_count, NULL);
}
}
if (res != OK) {
ALOGE("%s: Unable to update metadata entry %s.%s (%x): %s (%d)",
__FUNCTION__, get_camera_metadata_section_name(tag),
get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
}
return res;
}
status_t CameraMetadata::updateImpl(uint32_t tag, const void *data,
size_t data_count) {
status_t res;
if (mLocked) {
ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
return INVALID_OPERATION;
}
int type = get_camera_metadata_tag_type(tag);
if (type == -1) {
ALOGE("%s: Tag %d not found", __FUNCTION__, tag);
return BAD_VALUE;
}
// Safety check - ensure that data isn't pointing to this metadata, since
// that would get invalidated if a resize is needed
size_t bufferSize = get_camera_metadata_size(mBuffer);
uintptr_t bufAddr = reinterpret_cast<uintptr_t>(mBuffer);
uintptr_t dataAddr = reinterpret_cast<uintptr_t>(data);
if (dataAddr > bufAddr && dataAddr < (bufAddr + bufferSize)) {
ALOGE("%s: Update attempted with data from the same metadata buffer!",
__FUNCTION__);
return INVALID_OPERATION;
}
size_t data_size = calculate_camera_metadata_entry_data_size(type,
data_count);
res = resizeIfNeeded(1, data_size);
if (res == OK) {
camera_metadata_entry_t entry;
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (res == NAME_NOT_FOUND) {
res = add_camera_metadata_entry(mBuffer,
tag, data, data_count);
} else if (res == OK) {
res = update_camera_metadata_entry(mBuffer,
entry.index, data, data_count, NULL);
}
}
if (res != OK) {
ALOGE("%s: Unable to update metadata entry %s.%s (%x): %s (%d)",
__FUNCTION__, get_camera_metadata_section_name(tag),
get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
}
IF_ALOGV() {
ALOGE_IF(validate_camera_metadata_structure(mBuffer, /*size*/NULL) !=
OK,
"%s: Failed to validate metadata structure after update %p",
__FUNCTION__, mBuffer);
}
return res;
}
status_t updateMetadata(camera_metadata_t * metadata, uint32_t tag, const void* data, size_t data_count)
{
status_t res = NO_ERROR;
camera_metadata_entry_t entry;
res = find_camera_metadata_entry(metadata, tag, &entry);
if (res == NAME_NOT_FOUND) {
res = add_camera_metadata_entry(metadata,
tag, data, data_count);
} else if (res == OK) {
res = update_camera_metadata_entry(metadata,
entry.index, data, data_count, NULL);
}
return res;
}
status_t CameraMetadata::updateImpl(uint32_t tag, const void *data,
size_t data_count) {
status_t res;
if (mLocked) {
ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
return INVALID_OPERATION;
}
int type = get_camera_metadata_tag_type(tag);
if (type == -1) {
ALOGE("%s: Tag %d not found", __FUNCTION__, tag);
return BAD_VALUE;
}
size_t data_size = calculate_camera_metadata_entry_data_size(type,
data_count);
res = resizeIfNeeded(1, data_size);
if (res == OK) {
camera_metadata_entry_t entry;
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (res == NAME_NOT_FOUND) {
res = add_camera_metadata_entry(mBuffer,
tag, data, data_count);
} else if (res == OK) {
res = update_camera_metadata_entry(mBuffer,
entry.index, data, data_count, NULL);
}
}
if (res != OK) {
ALOGE("%s: Unable to update metadata entry %s.%s (%x): %s (%d)",
__FUNCTION__, get_camera_metadata_section_name(tag),
get_camera_metadata_tag_name(tag), tag, strerror(-res), res);
}
IF_ALOGV() {
ALOGE_IF(validate_camera_metadata_structure(mBuffer, /*size*/NULL) !=
OK,
"%s: Failed to validate metadata structure after update %p",
__FUNCTION__, mBuffer);
}
return res;
}
static status_t addOrSize(camera_metadata_t *request,
bool sizeRequest,
size_t *entryCount,
size_t *dataCount,
uint32_t tag,
const void *entryData,
size_t entryDataCount) {
status_t res;
if (!sizeRequest) {
return add_camera_metadata_entry(request, tag, entryData,
entryDataCount);
} else {
int type = get_camera_metadata_tag_type(tag);
if (type < 0 ) return BAD_VALUE;
(*entryCount)++;
(*dataCount) += calculate_camera_metadata_entry_data_size(type,
entryDataCount);
return OK;
}
}
camera_metadata_t* Metadata::generate()
{
pthread_mutex_lock(&mMutex);
// Reuse if old generated metadata still valid
if (!mDirty && mGenerated != NULL) {
ALOGV("%s: Reusing generated metadata at %p", __func__, mGenerated);
goto out;
}
// Destroy old metadata
if (mGenerated != NULL) {
ALOGV("%s: Freeing generated metadata at %p", __func__, mGenerated);
free_camera_metadata(mGenerated);
mGenerated = NULL;
}
// Generate new metadata structure
ALOGV("%s: Generating new camera metadata structure, Entries:%d Data:%d",
__func__, mEntryCount, mDataCount);
mGenerated = allocate_camera_metadata(mEntryCount, mDataCount);
if (mGenerated == NULL) {
ALOGE("%s: Failed to allocate metadata (%d entries %d data)",
__func__, mEntryCount, mDataCount);
goto out;
}
// Walk list of entries adding each one to newly allocated metadata
for (Entry *current = mHead; current != NULL; current = current->mNext) {
int res = add_camera_metadata_entry(mGenerated, current->mTag,
current->mData, current->mCount);
if (res != 0) {
ALOGE("%s: Failed to add camera metadata: %d", __func__, res);
free_camera_metadata(mGenerated);
mGenerated = NULL;
goto out;
}
}
out:
pthread_mutex_unlock(&mMutex);
return mGenerated;
}
