status_t CameraMetadata::erase(uint32_t tag) {
camera_metadata_entry_t entry;
status_t res;
if (mLocked) {
ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
return INVALID_OPERATION;
}
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (res == NAME_NOT_FOUND) {
return OK;
} else if (res != OK) {
ALOGE("%s: Error looking for 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;
}
res = delete_camera_metadata_entry(mBuffer, entry.index);
if (res != OK) {
ALOGE("%s: Error deleting 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::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;
}
camera_metadata_entry_t CameraMetadata::find(uint32_t tag) {
status_t res;
camera_metadata_entry entry;
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (CC_UNLIKELY( res != OK )) {
entry.count = 0;
entry.data.u8 = NULL;
}
return entry;
}
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;
}
camera_metadata_entry_t CameraMetadata::find(uint32_t tag) {
status_t res;
camera_metadata_entry entry;
if (mLocked) {
ALOGE("%s: CameraMetadata is locked", __FUNCTION__);
entry.count = 0;
return entry;
}
res = find_camera_metadata_entry(mBuffer, tag, &entry);
if (CC_UNLIKELY( res != OK )) {
entry.count = 0;
entry.data.u8 = NULL;
}
return entry;
}
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;
}
void QCameraHardwareInterface::runCommandThread(void *data)
{
/**
* This function implements the main service routine for the incoming
* frame requests, this thread routine is started everytime we get a
* notify_request_queue_not_empty trigger, this thread makes the
* assumption that once it receives a NULL on a dequest_request call
* there will be a fresh notify_request_queue_not_empty call that is
* invoked thereby launching a new instance of this thread. Therefore,
* once we get a NULL on a dequeue request we simply let this thread die
*/
int res;
camera_metadata_t *request=NULL;
mPendingRequests=0;
while(mRequestQueueSrc) {
ALOGV("%s:Dequeue request using mRequestQueueSrc:%p",__func__,mRequestQueueSrc);
mRequestQueueSrc->dequeue_request(mRequestQueueSrc,&request);
if(request==NULL) {
ALOGE("%s:No more requests available from src command \
thread dying",__func__);
return;
}
mPendingRequests++;
/* Set the metadata values */
/* Wait for the SOF for the new metadata values to be applied */
/* Check the streams that need to be active in the stream request */
sort_camera_metadata(request);
camera_metadata_entry_t streams;
res = find_camera_metadata_entry(request,
ANDROID_REQUEST_OUTPUT_STREAMS,
&streams);
if (res != NO_ERROR) {
ALOGE("%s: error reading output stream tag", __FUNCTION__);
return;
}
res = tryRestartStreams(streams);
if (res != NO_ERROR) {
ALOGE("error tryRestartStreams %d", res);
return;
}
/* 3rd pass: Turn on all streams requested */
for (uint32_t i = 0; i < streams.count; i++) {
int streamId = streams.data.u8[i];
QCameraStream *stream = QCameraStream::getStreamAtId(streamId);
/* Increment the frame pending count in each stream class */
/* Assuming we will have the stream obj in had at this point may be
* may be multiple objs in which case we loop through array of streams */
stream->onNewRequest();
}
ALOGV("%s:Freeing request using mRequestQueueSrc:%p",__func__,mRequestQueueSrc);
/* Free the request buffer */
mRequestQueueSrc->free_request(mRequestQueueSrc,request);
mPendingRequests--;
ALOGV("%s:Completed request",__func__);
}
