/*===========================================================================
* FUNCTION : mm_camera_poll_proc_pipe
*
* DESCRIPTION: polling thread routine to process pipe
*
* PARAMETERS :
* @poll_cb : ptr to poll thread object
*
* RETURN : none
*==========================================================================*/
static void mm_camera_poll_proc_pipe(mm_camera_poll_thread_t *poll_cb)
{
ssize_t read_len;
int i;
mm_camera_sig_evt_t cmd_evt;
read_len = read(poll_cb->pfds[0], &cmd_evt, sizeof(cmd_evt));
CDBG("%s: read_fd = %d, read_len = %d, expect_len = %d cmd = %d",
__func__, poll_cb->pfds[0], (int)read_len, (int)sizeof(cmd_evt), cmd_evt.cmd);
switch (cmd_evt.cmd) {
case MM_CAMERA_PIPE_CMD_POLL_ENTRIES_UPDATED:
case MM_CAMERA_PIPE_CMD_POLL_ENTRIES_UPDATED_ASYNC:
/* we always have index 0 for pipe read */
poll_cb->num_fds = 0;
poll_cb->poll_fds[poll_cb->num_fds].fd = poll_cb->pfds[0];
poll_cb->poll_fds[poll_cb->num_fds].events = POLLIN|POLLRDNORM|POLLPRI;
poll_cb->num_fds++;
if (MM_CAMERA_POLL_TYPE_EVT == poll_cb->poll_type) {
if (poll_cb->poll_entries[0].fd > 0) {
/* fd is valid, we update poll_fds */
poll_cb->poll_fds[poll_cb->num_fds].fd = poll_cb->poll_entries[0].fd;
poll_cb->poll_fds[poll_cb->num_fds].events = POLLIN|POLLRDNORM|POLLPRI;
poll_cb->num_fds++;
}
} else if (MM_CAMERA_POLL_TYPE_DATA == poll_cb->poll_type) {
for(i = 0; i < MAX_STREAM_NUM_IN_BUNDLE; i++) {
if(poll_cb->poll_entries[i].fd > 0) {
/* fd is valid, we update poll_fds to this fd */
poll_cb->poll_fds[poll_cb->num_fds].fd = poll_cb->poll_entries[i].fd;
poll_cb->poll_fds[poll_cb->num_fds].events = POLLIN|POLLRDNORM|POLLPRI;
poll_cb->num_fds++;
} else {
/* fd is invalid, we set the entry to -1 to prevent polling.
* According to spec, polling will not poll on entry with fd=-1.
* If this is not the case, we need to skip these invalid fds
* when updating this array.
* We still keep fd=-1 in this array because this makes easier to
* map cb associated with this fd once incoming data avail by directly
* using the index-1(0 is reserved for pipe read, so need to reduce index by 1) */
poll_cb->poll_fds[poll_cb->num_fds].fd = -1;
poll_cb->poll_fds[poll_cb->num_fds].events = 0;
poll_cb->num_fds++;
}
}
}
if (cmd_evt.cmd != MM_CAMERA_PIPE_CMD_POLL_ENTRIES_UPDATED_ASYNC)
mm_camera_poll_sig_done(poll_cb);
break;
case MM_CAMERA_PIPE_CMD_EXIT:
default:
mm_camera_poll_set_state(poll_cb, MM_CAMERA_POLL_TASK_STATE_STOPPED);
mm_camera_poll_sig_done(poll_cb);
break;
}
}
/*===========================================================================
* FUNCTION : mm_camera_poll_thread
*
* DESCRIPTION: polling thread entry function
*
* PARAMETERS :
* @data : ptr to poll thread object
*
* RETURN : none
*==========================================================================*/
static void *mm_camera_poll_thread(void *data)
{
mm_camera_poll_thread_t *poll_cb = (mm_camera_poll_thread_t *)data;
/* add pipe read fd into poll first */
poll_cb->poll_fds[poll_cb->num_fds++].fd = poll_cb->pfds[0];
mm_camera_poll_sig_done(poll_cb);
mm_camera_poll_set_state(poll_cb, MM_CAMERA_POLL_TASK_STATE_POLL);
return mm_camera_poll_fn(poll_cb);
}
static void mm_camera_poll_proc_pipe(mm_camera_poll_thread_t *poll_cb)
{
ssize_t read_len;
int i;
mm_camera_sig_evt_t cmd_evt;
read_len = read(poll_cb->data.pfds[0], &cmd_evt, sizeof(cmd_evt));
CDBG("%s: read_fd = %d, read_len = %d, expect_len = %d",
__func__, poll_cb->data.pfds[0], (int)read_len, (int)sizeof(cmd_evt));
switch(cmd_evt.cmd) {
case MM_CAMERA_PIPE_CMD_FLASH_QUEUED_FRAME:
mm_camera_dispatch_buffered_frames(poll_cb->data.my_obj,
poll_cb->data.ch_type);
break;
case MM_CAMERA_PIPE_CMD_CH_EVENT: {
mm_camera_event_t *event = &cmd_evt.event;
CDBG("%s: ch event, type=0x%x, ch=%d, evt=%d",
__func__, event->event_type, event->e.ch.ch, event->e.ch.evt);
mm_camera_dispatch_app_event(poll_cb->data.my_obj, event);
break;
}
case MM_CAMERA_PIPE_CMD_ADD_CH:
if(poll_cb->data.poll_type == MM_CAMERA_POLL_TYPE_CH) {
for(i = 0; i < MM_CAMERA_CH_STREAM_MAX; i++) {
if(poll_cb->data.poll_streams[i]) {
poll_cb->data.poll_fd[poll_cb->data.num_fds + i] = poll_cb->data.poll_streams[i]->fd;
}
}
}
poll_cb->data.num_fds += mm_camera_ch_util_get_num_stream(poll_cb->data.my_obj,
poll_cb->data.ch_type);
poll_cb->data.used = 1;
CDBG("Num fds after MM_CAMERA_PIPE_CMD_ADD_CH = %d",poll_cb->data.num_fds);
break;
case MM_CAMERA_PIPE_CMD_DEL_CH:
poll_cb->data.num_fds -= mm_camera_ch_util_get_num_stream(poll_cb->data.my_obj,
poll_cb->data.ch_type);
poll_cb->data.used = 0;
CDBG("Num fds after MM_CAMERA_PIPE_CMD_DEL_CH = %d",poll_cb->data.num_fds);
break;
case MM_CAMERA_PIPE_CMD_EXIT:
default:
cm_camera_poll_set_state(poll_cb, MM_CAMERA_POLL_TASK_STATE_MAX);
mm_camera_poll_sig_done(poll_cb);
break;
}
}
static void *mm_camera_poll_thread(void *data)
{
int rc = 0;
int i;
void *ret = NULL;
mm_camera_poll_thread_t *poll_cb = (mm_camera_poll_thread_t *)data;
/* add pipe read fd into poll first */
poll_cb->poll_fds[poll_cb->num_fds++].fd = poll_cb->pfds[0];
//poll_cb->poll_fds[poll_cb->num_fds++].fd = (((mm_camera_obj_t *)poll_cb->my_obj)->ctrl_fd);
mm_camera_poll_sig_done(poll_cb);
mm_camera_poll_set_state(poll_cb, MM_CAMERA_POLL_TASK_STATE_POLL);
ret = mm_camera_poll_fn(poll_cb);
return ret;
}
static void *mm_camera_poll_thread(void *data)
{
int rc = 0;
int i;
void *ret = NULL;
mm_camera_poll_thread_t *poll_cb = data;
poll_cb->data.poll_fd[poll_cb->data.num_fds++] = poll_cb->data.pfds[0];
switch(poll_cb->data.poll_type) {
case MM_CAMERA_POLL_TYPE_EVT:
poll_cb->data.poll_fd[poll_cb->data.num_fds++] =
((mm_camera_obj_t *)(poll_cb->data.my_obj))->ctrl_fd;
break;
case MM_CAMERA_POLL_TYPE_CH:
default:
break;
}
mm_camera_poll_sig_done(poll_cb);
ret = mm_camera_poll_fn(poll_cb);
return ret;
}