mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2025-03-28 11:55:39 +00:00
Code Issues 1 Projects Releases Wiki Activity

camerabin: buffer-alloc support fixes to image and video bin handling

Browse source 
Keep image bin in PAUSED state in image mode except when processing/saving (PLAYING/READY).
Change output-selector to view finder before setting video bin to READY.
Fix filename sent with img-done signal.
This commit is contained in:
Lasse Laukkanen 2009-06-23 13:01:52 +03:00 committed by Stefan Kost
parent 18e7091238
commit c3abf1b267
1 changed files with 29 additions and 45 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

74
gst/camerabin/gstcamerabin.c
View file

@ -907,29 +907,22 @@ camerabin_dispose_elements (GstCameraBin * camera)
/*
* gst_camerabin_image_capture_continue:
* @camera: camerabin object
* @filename: filename of the finished image
*
* Notify application that image has been saved with a signal.
*
* Returns TRUE if another image should be captured, FALSE otherwise.
*/
static gboolean
gst_camerabin_image_capture_continue (GstCameraBin * camera)
gst_camerabin_image_capture_continue (GstCameraBin * camera,
const gchar * filename)
{
gchar *filename = NULL;
gboolean cont = FALSE;
/* Check the filename of the written image */
g_object_get (G_OBJECT (camera->imgbin), "filename", &filename, NULL);
GST_DEBUG_OBJECT (camera, "emitting img_done signal, filename: %s", filename);
g_signal_emit (G_OBJECT (camera), camerabin_signals[IMG_DONE_SIGNAL], 0,
filename, &cont);
g_free (filename);
GST_DEBUG_OBJECT (camera, "emitted img_done, new filename: %s, continue: %d",
camera->filename->str, cont);
/* If the app wants to continue make sure new filename has been set */
if (cont && g_str_equal (camera->filename->str, "")) {
GST_ELEMENT_ERROR (camera, RESOURCE, NOT_FOUND,
@ -965,11 +958,7 @@ gst_camerabin_change_mode (GstCameraBin * camera, gint mode)
GstStateChangeReturn state_ret;
camera->active_bin = camera->imgbin;
/* we can't go to playing as filesink would error out if it does not have
* a filename yet, we set the filename async with the buffer flow */
state_ret = gst_element_set_state (camera->active_bin, GST_STATE_READY);
GST_DEBUG_OBJECT (camera, "setting imagebin to ready: %s",
gst_element_state_change_return_get_name (state_ret));
state_ret = gst_element_set_state (camera->active_bin, GST_STATE_PAUSED);
if (state_ret == GST_STATE_CHANGE_FAILURE) {
GST_WARNING_OBJECT (camera, "state change failed");
@ -1527,10 +1516,6 @@ img_capture_prepared (gpointer data, GstCaps * caps)
}
g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
"active-pad", camera->pad_src_img, NULL);
/* We need to set image bin to PAUSED or buffer-allocs will fail */
GST_DEBUG_OBJECT (camera, "setting image bin to PAUSED");
gst_element_set_state (camera->imgbin, GST_STATE_PAUSED);
}
/*
@ -1542,7 +1527,6 @@ img_capture_prepared (gpointer data, GstCaps * caps)
static void
gst_camerabin_start_image_capture (GstCameraBin * camera)
{
GstStateChangeReturn state_ret;
gboolean wait_for_prepare = FALSE, ret = FALSE;
GST_INFO_OBJECT (camera, "starting image capture");
@ -1576,23 +1560,12 @@ gst_camerabin_start_image_capture (GstCameraBin * camera)
}
if (!wait_for_prepare) {
/* Image queue's srcpad data probe will set imagebin to PLAYING */
state_ret = gst_element_set_state (camera->imgbin, GST_STATE_PAUSED);
GST_DEBUG_OBJECT (camera, "setting imagebin to paused: %s",
gst_element_state_change_return_get_name (state_ret));
if (state_ret != GST_STATE_CHANGE_FAILURE) {
GST_INFO_OBJECT (camera, "imagebin is PAUSED");
g_mutex_lock (camera->capture_mutex);
g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", TRUE,
"active-pad", camera->pad_src_img, NULL);
camera->capturing = TRUE;
ret = TRUE;
g_mutex_unlock (camera->capture_mutex);
} else {
GST_WARNING_OBJECT (camera, "imagebin state change failed");
gst_element_set_state (camera->imgbin, GST_STATE_NULL);
}
g_mutex_lock (camera->capture_mutex);
g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", TRUE,
"active-pad", camera->pad_src_img, NULL);
camera->capturing = TRUE;
ret = TRUE;
g_mutex_unlock (camera->capture_mutex);
}
if (!ret) {
@ -1672,7 +1645,6 @@ gst_camerabin_send_video_eos (GstCameraBin * camera)
* @blocked: TRUE to block, FALSE to unblock
* @u_data: camera bin object
*
* Sends eos event to image bin if blocking pad leading to image bin.
* The pad will be unblocked when image bin posts eos message.
*/
static void
@ -1945,6 +1917,12 @@ gst_camerabin_reset_to_view_finder (GstCameraBin * camera)
GstStateChangeReturn state_ret;
GST_DEBUG_OBJECT (camera, "resetting");
if (camera->src_out_sel) {
/* Set selector to forward data to view finder */
g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
"active-pad", camera->pad_src_view, NULL);
}
/* Set video bin to READY state */
if (camera->active_bin == camera->vidbin) {
state_ret = gst_element_set_state (camera->active_bin, GST_STATE_READY);
@ -1959,12 +1937,6 @@ gst_camerabin_reset_to_view_finder (GstCameraBin * camera)
camera->stop_requested = FALSE;
camera->paused = FALSE;
if (camera->src_out_sel) {
/* Set selector to forward data to view finder */
g_object_set (G_OBJECT (camera->src_out_sel), "resend-latest", FALSE,
"active-pad", camera->pad_src_view, NULL);
}
/* Enable view finder mode in v4l2camsrc */
if (camera->src_vid_src &&
g_object_class_find_property (G_OBJECT_GET_CLASS (camera->src_vid_src),
@ -3064,6 +3036,10 @@ static gboolean
gst_camerabin_imgbin_finished (gpointer u_data)
{
GstCameraBin *camera = GST_CAMERABIN (u_data);
gchar *filename = NULL;
/* Get the filename of the finished image */
g_object_get (G_OBJECT (camera->imgbin), "filename", &filename, NULL);
GST_DEBUG_OBJECT (camera, "Image encoding finished");
@ -3072,7 +3048,11 @@ gst_camerabin_imgbin_finished (gpointer u_data)
GST_DEBUG_OBJECT (camera, "Image pipeline set to READY");
/* Send img-done signal */
gst_camerabin_image_capture_continue (camera);
gst_camerabin_image_capture_continue (camera, filename);
g_free (filename);
/* Set image bin back to PAUSED so that buffer-allocs don't fail */
gst_element_set_state (camera->imgbin, GST_STATE_PAUSED);
/* Unblock image queue pad to process next buffer */
gst_pad_set_blocked_async (camera->pad_src_queue, FALSE,
@ -3143,6 +3123,10 @@ gst_camerabin_user_start (GstCameraBin * camera)
if (!camera->active_bin) {
GST_INFO_OBJECT (camera, "mode not explicitly set by application");
gst_camerabin_change_mode (camera, camera->mode);
if (!camera->active_bin) {
GST_ELEMENT_ERROR (camera, CORE, FAILED,
("starting capture failed"), (NULL));
}
}
if (g_str_equal (camera->filename->str, "")) {