More re #1362: actually try to use the device switching capability in pjsua-lib, in pjsua_call_set_vid_strm(PJSUA_CALL_VID_STRM_CHANGE_CAP_DEV) operation
git-svn-id: https://svn.pjsip.org/repos/pjproject/trunk@3787 74dad513-b988-da41-8d7b-12977e46ad98
diff --git a/pjsip/src/pjsua-lib/pjsua_vid.c b/pjsip/src/pjsua-lib/pjsua_vid.c
index 7ad73bb..2a4c99f 100644
--- a/pjsip/src/pjsua-lib/pjsua_vid.c
+++ b/pjsip/src/pjsua-lib/pjsua_vid.c
@@ -1756,6 +1756,8 @@
pjmedia_vid_dev_index cap_dev)
{
pjsua_call_media *call_med;
+ pjmedia_vid_dev_stream *old_dev;
+ pjmedia_vid_dev_switch_param switch_prm;
pjmedia_vid_dev_info info;
pjsua_vid_win *w, *new_w = NULL;
pjsua_vid_win_id wid, new_wid;
@@ -1794,6 +1796,19 @@
w = &pjsua_var.win[wid];
pj_assert(w->type == PJSUA_WND_TYPE_PREVIEW && w->vp_cap);
+ /* If the old device supports fast switching, then that's excellent! */
+ old_dev = pjmedia_vid_port_get_stream(w->vp_cap);
+ pjmedia_vid_dev_switch_param_default(&switch_prm);
+ switch_prm.target_id = cap_dev;
+ status = pjmedia_vid_dev_stream_set_cap(old_dev,
+ PJMEDIA_VID_DEV_CAP_SWITCH,
+ &switch_prm);
+ if (status == PJ_SUCCESS) {
+ w->preview_cap_id = cap_dev;
+ return PJ_SUCCESS;
+ }
+
+ /* No it doesn't support fast switching. Do slow switching then.. */
status = pjmedia_vid_stream_get_port(call_med->strm.v.stream,
PJMEDIA_DIR_ENCODING, &media_port);
if (status != PJ_SUCCESS)