mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-27 20:21:24 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/gst/camerabin/camerabinvideo.c
Teemu Katajisto 7dac3659c6 camerabin: add flags property. Fixes #573370 (partially) 
Adds flags property to enable runtime configuration of
conversion and scaling elements. Also adds flag for disabling
audio completely.
2009-11-27 11:42:36 +02:00

899 lines
26 KiB
C
Raw Blame History

/*
* GStreamer
* Copyright (C) 2008 Nokia Corporation <multimedia@maemo.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:camerabinvideo
* @short_description: video recording module of #GstCameraBin
*
* <refsect2>
* <para>
*
* The pipeline for this module is:
*
* <informalexample>
* <programlisting>
*-----------------------------------------------------------------------------
* audiosrc -> audio_queue -> audioconvert -> volume -> audioenc
* > videomux -> filesink
* video_queue -> [timeoverlay] -> videoenc
* -> [post proc] -> tee <
* queue ->
*-----------------------------------------------------------------------------
* </programlisting>
* </informalexample>
*
* The properties of elements are:
*
* queue - "leaky", 2 (Leaky on downstream (old buffers))
*
* </para>
* </refsect2>
*/
/*
* includes
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "camerabingeneral.h"
#include "camerabinvideo.h"
/*
* defines and static global vars
*/
/* internal element names */
#define DEFAULT_AUD_ENC "vorbisenc"
#define DEFAULT_VID_ENC "theoraenc"
#define DEFAULT_MUX "oggmux"
#define DEFAULT_SINK "filesink"
#define DEFAULT_FLAGS 0
enum
{
PROP_0,
PROP_FILENAME
};
static void gst_camerabin_video_dispose (GstCameraBinVideo * sink);
static void gst_camerabin_video_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_camerabin_video_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstClock *gst_camerabin_video_provide_clock (GstElement * elem);
static GstStateChangeReturn
gst_camerabin_video_change_state (GstElement * element,
GstStateChange transition);
static
gboolean camerabin_video_pad_tee_src0_have_buffer (GstPad * pad,
GstBuffer * buffer, gpointer u_data);
static gboolean camerabin_video_pad_aud_src_have_buffer (GstPad * pad,
GstBuffer * buffer, gpointer u_data);
static gboolean camerabin_video_sink_have_event (GstPad * pad, GstEvent * event,
gpointer u_data);
static gboolean gst_camerabin_video_create_elements (GstCameraBinVideo * vid);
static void gst_camerabin_video_destroy_elements (GstCameraBinVideo * vid);
GST_BOILERPLATE (GstCameraBinVideo, gst_camerabin_video, GstBin, GST_TYPE_BIN);
static const GstElementDetails gst_camerabin_video_details =
GST_ELEMENT_DETAILS ("Video capture bin for camerabin",
"Bin/Video",
"Process and store video data",
"Edgard Lima <edgard.lima@indt.org.br>\n"
"Nokia Corporation <multimedia@maemo.org>");
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
/* GObject methods implementation */
static void
gst_camerabin_video_base_init (gpointer klass)
{
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (eklass,
gst_static_pad_template_get (&sink_template));
gst_element_class_add_pad_template (eklass,
gst_static_pad_template_get (&src_template));
gst_element_class_set_details (eklass, &gst_camerabin_video_details);
}
static void
gst_camerabin_video_class_init (GstCameraBinVideoClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->dispose =
(GObjectFinalizeFunc) GST_DEBUG_FUNCPTR (gst_camerabin_video_dispose);
eklass->change_state = GST_DEBUG_FUNCPTR (gst_camerabin_video_change_state);
eklass->provide_clock = GST_DEBUG_FUNCPTR (gst_camerabin_video_provide_clock);
gobject_class->set_property =
GST_DEBUG_FUNCPTR (gst_camerabin_video_set_property);
gobject_class->get_property =
GST_DEBUG_FUNCPTR (gst_camerabin_video_get_property);
/**
* GstCameraBinVideo:filename:
*
* This property can be used to specify the filename of the video.
*
**/
g_object_class_install_property (gobject_class, PROP_FILENAME,
g_param_spec_string ("filename", "Filename",
"Filename of the video to save", NULL, G_PARAM_READWRITE));
}
static void
gst_camerabin_video_init (GstCameraBinVideo * vid,
GstCameraBinVideoClass * g_class)
{
vid->filename = g_string_new ("");
vid->user_post = NULL;
vid->user_vid_enc = NULL;
vid->user_aud_enc = NULL;
vid->user_aud_src = NULL;
vid->user_mux = NULL;
vid->aud_src = NULL;
vid->sink = NULL;
vid->tee = NULL;
vid->volume = NULL;
vid->video_queue = NULL;
vid->tee_video_srcpad = NULL;
vid->tee_vf_srcpad = NULL;
vid->pending_eos = NULL;
vid->mute = ARG_DEFAULT_MUTE;
vid->flags = DEFAULT_FLAGS;
vid->aud_src_probe_id = 0;
vid->vid_src_probe_id = 0;
vid->vid_tee_probe_id = 0;
vid->vid_sink_probe_id = 0;
/* Create src and sink ghost pads */
vid->sinkpad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (vid), vid->sinkpad);
vid->srcpad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (vid), vid->srcpad);
/* Add probe for handling eos when stopping recording */
vid->vid_sink_probe_id = gst_pad_add_event_probe (vid->sinkpad,
G_CALLBACK (camerabin_video_sink_have_event), vid);
}
static void
gst_camerabin_video_dispose (GstCameraBinVideo * vid)
{
GST_DEBUG_OBJECT (vid, "disposing");
g_string_free (vid->filename, TRUE);
vid->filename = NULL;
if (vid->vid_sink_probe_id) {
gst_pad_remove_event_probe (vid->sinkpad, vid->vid_sink_probe_id);
vid->vid_sink_probe_id = 0;
}
if (vid->user_post) {
gst_object_unref (vid->user_post);
vid->user_post = NULL;
}
if (vid->user_vid_enc) {
gst_object_unref (vid->user_vid_enc);
vid->user_vid_enc = NULL;
}
if (vid->user_aud_enc) {
gst_object_unref (vid->user_aud_enc);
vid->user_aud_enc = NULL;
}
if (vid->user_aud_src) {
gst_object_unref (vid->user_aud_src);
vid->user_aud_src = NULL;
}
if (vid->user_mux) {
gst_object_unref (vid->user_mux);
vid->user_mux = NULL;
}
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) vid);
}
static void
gst_camerabin_video_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCameraBinVideo *bin = GST_CAMERABIN_VIDEO (object);
switch (prop_id) {
case PROP_FILENAME:
g_string_assign (bin->filename, g_value_get_string (value));
GST_INFO_OBJECT (bin, "received filename: '%s'", bin->filename->str);
if (bin->sink) {
g_object_set (G_OBJECT (bin->sink), "location", bin->filename->str,
NULL);
} else {
GST_INFO_OBJECT (bin, "no sink, not setting name yet");
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_camerabin_video_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCameraBinVideo *bin = GST_CAMERABIN_VIDEO (object);
switch (prop_id) {
case PROP_FILENAME:
g_value_set_string (value, bin->filename->str);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GstElement methods implementation */
static GstClock *
gst_camerabin_video_provide_clock (GstElement * elem)
{
GstElement *aud_src = GST_CAMERABIN_VIDEO (elem)->aud_src;
if (aud_src) {
return gst_element_provide_clock (aud_src);
} else {
return NULL;
}
}
static GstStateChangeReturn
gst_camerabin_video_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstCameraBinVideo *vid = GST_CAMERABIN_VIDEO (element);
GST_DEBUG_OBJECT (element, "changing state: %s -> %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_camerabin_video_create_elements (vid)) {
return GST_STATE_CHANGE_FAILURE;
}
/* Don't change sink to READY yet to allow changing the
filename in READY state. */
gst_element_set_locked_state (vid->sink, TRUE);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
vid->calculate_adjust_ts_video = TRUE;
vid->calculate_adjust_ts_aud = TRUE;
g_object_set (G_OBJECT (vid->sink), "async", FALSE, NULL);
gst_element_set_locked_state (vid->sink, FALSE);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
vid->calculate_adjust_ts_video = TRUE;
vid->calculate_adjust_ts_aud = TRUE;
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* Set sink to NULL in order to write the file _now_ */
GST_INFO ("write video file: %s", vid->filename->str);
gst_element_set_locked_state (vid->sink, TRUE);
gst_element_set_state (vid->sink, GST_STATE_NULL);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
/* Write debug graph to file */
GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (GST_ELEMENT_PARENT (vid)),
GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE |
GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS, "videobin.playing");
if (vid->pending_eos) {
/* Video bin is still paused, so push eos directly to video queue */
GST_DEBUG_OBJECT (vid, "pushing pending eos");
gst_pad_push_event (vid->tee_video_srcpad, vid->pending_eos);
vid->pending_eos = NULL;
}
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
/* Reset counters related to timestamp rewriting */
vid->adjust_ts_video = 0;
vid->last_ts_video = 0;
vid->adjust_ts_aud = 0;
vid->last_ts_aud = 0;
if (vid->pending_eos) {
gst_event_unref (vid->pending_eos);
vid->pending_eos = NULL;
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
gst_camerabin_video_destroy_elements (vid);
break;
default:
break;
}
GST_DEBUG_OBJECT (element, "changed state: %s -> %s = %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)),
gst_element_state_change_return_get_name (ret));
return ret;
}
/*
* static helper functions implementation
*/
/*
* camerabin_video_pad_tee_src0_have_buffer:
* @pad: tee src pad leading to video encoding
* @event: received buffer
* @u_data: video bin object
*
* Buffer probe for rewriting video buffer timestamps.
*
* Returns: TRUE always
*/
static gboolean
camerabin_video_pad_tee_src0_have_buffer (GstPad * pad, GstBuffer * buffer,
gpointer u_data)
{
GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data;
GST_LOG ("buffer in with size %d ts %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
if (G_UNLIKELY (vid->calculate_adjust_ts_video)) {
GstEvent *event;
GstObject *tee;
GstPad *sinkpad;
vid->adjust_ts_video = GST_BUFFER_TIMESTAMP (buffer) - vid->last_ts_video;
vid->calculate_adjust_ts_video = FALSE;
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, vid->last_ts_video);
/* Send the newsegment to both view finder and video bin */
tee = gst_pad_get_parent (pad);
sinkpad = gst_element_get_static_pad (GST_ELEMENT (tee), "sink");
gst_pad_send_event (sinkpad, event);
gst_object_unref (tee);
gst_object_unref (sinkpad);
GST_LOG_OBJECT (vid, "vid ts adjustment: %" GST_TIME_FORMAT,
GST_TIME_ARGS (vid->adjust_ts_video));
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
}
GST_BUFFER_TIMESTAMP (buffer) -= vid->adjust_ts_video;
vid->last_ts_video = GST_BUFFER_TIMESTAMP (buffer);
if (GST_BUFFER_DURATION_IS_VALID (buffer))
vid->last_ts_video += GST_BUFFER_DURATION (buffer);
GST_LOG ("buffer out with size %d ts %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
return TRUE;
}
/*
* camerabin_video_pad_aud_src_have_buffer:
* @pad: audio source src pad
* @event: received buffer
* @u_data: video bin object
*
* Buffer probe for rewriting audio buffer timestamps.
*
* Returns: TRUE always
*/
static gboolean
camerabin_video_pad_aud_src_have_buffer (GstPad * pad, GstBuffer * buffer,
gpointer u_data)
{
GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data;
GST_LOG ("buffer in with size %d duration %" G_GINT64_FORMAT " ts %"
GST_TIME_FORMAT, GST_BUFFER_SIZE (buffer), GST_BUFFER_DURATION (buffer),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
if (vid->calculate_adjust_ts_aud) {
GstEvent *event;
GstPad *peerpad = NULL;
vid->adjust_ts_aud = GST_BUFFER_TIMESTAMP (buffer) - vid->last_ts_aud;
vid->calculate_adjust_ts_aud = FALSE;
event = gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME,
0, GST_CLOCK_TIME_NONE, vid->last_ts_aud);
peerpad = gst_pad_get_peer (pad);
if (peerpad) {
gst_pad_send_event (peerpad, event);
gst_object_unref (peerpad);
}
GST_LOG_OBJECT (vid, "aud ts adjustment: %" GST_TIME_FORMAT,
GST_TIME_ARGS (vid->adjust_ts_aud));
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
}
GST_BUFFER_TIMESTAMP (buffer) -= vid->adjust_ts_aud;
vid->last_ts_aud = GST_BUFFER_TIMESTAMP (buffer);
if (GST_BUFFER_DURATION_IS_VALID (buffer))
vid->last_ts_aud += GST_BUFFER_DURATION (buffer);
GST_LOG ("buffer out with size %d ts %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
return TRUE;
}
/*
* camerabin_video_sink_have_event:
* @pad: video bin sink pad
* @event: received event
* @u_data: video bin object
*
* Event probe for video bin eos handling.
* Copies the eos event to audio branch of video bin.
*
* Returns: FALSE to drop the event, TRUE otherwise
*/
static gboolean
camerabin_video_sink_have_event (GstPad * pad, GstEvent * event,
gpointer u_data)
{
GstCameraBinVideo *vid = (GstCameraBinVideo *) u_data;
gboolean ret = TRUE;
GST_DEBUG_OBJECT (vid, "got videobin sink event: %s",
GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
if (vid->aud_src) {
GST_DEBUG_OBJECT (vid, "copying %s to audio branch",
GST_EVENT_TYPE_NAME (event));
gst_element_send_event (vid->aud_src, gst_event_copy (event));
}
/* If we're paused, we can't pass eos to video now to avoid blocking.
Instead send eos when changing to playing next time. */
if (GST_STATE (GST_ELEMENT (vid)) == GST_STATE_PAUSED) {
GST_DEBUG_OBJECT (vid, "paused, delay eos sending");
vid->pending_eos = gst_event_ref (event);
ret = FALSE; /* Drop the event */
}
break;
default:
break;
}
return ret;
}
/*
* gst_camerabin_video_create_elements:
* @vid: a pointer to #GstCameraBinVideo
*
* This function creates the needed #GstElements and resources to record videos.
* Use gst_camerabin_video_destroy_elements() to free these resources.
*
* Returns: %TRUE if succeeded or FALSE if failed
*/
static gboolean
gst_camerabin_video_create_elements (GstCameraBinVideo * vid)
{
GstPad *pad = NULL, *vid_sinkpad = NULL, *vid_srcpad = NULL;
GstBin *vidbin = GST_BIN (vid);
GstElement *queue = NULL;
vid->adjust_ts_video = 0;
vid->last_ts_video = 0;
vid->calculate_adjust_ts_video = FALSE;
vid->adjust_ts_aud = 0;
vid->last_ts_aud = 0;
vid->calculate_adjust_ts_aud = FALSE;
/* Add video post processing element if any */
if (vid->user_post) {
if (!gst_camerabin_add_element (vidbin, vid->user_post)) {
goto error;
}
vid_sinkpad = gst_element_get_static_pad (vid->user_post, "sink");
}
/* Add tee element */
if (!(vid->tee = gst_camerabin_create_and_add_element (vidbin, "tee"))) {
goto error;
}
/* Set up sink ghost pad for video bin */
if (!vid_sinkpad) {
vid_sinkpad = gst_element_get_static_pad (vid->tee, "sink");
}
gst_ghost_pad_set_target (GST_GHOST_PAD (vid->sinkpad), vid_sinkpad);
gst_object_unref (vid_sinkpad);
/* Add queue element for video */
vid->tee_video_srcpad = gst_element_get_request_pad (vid->tee, "src%d");
if (!(vid->video_queue =
gst_camerabin_create_and_add_element (vidbin, "queue"))) {
goto error;
}
/* Add probe for rewriting video timestamps */
vid->vid_tee_probe_id = gst_pad_add_buffer_probe (vid->tee_video_srcpad,
G_CALLBACK (camerabin_video_pad_tee_src0_have_buffer), vid);
/* Add user set or default video encoder element */
if (vid->user_vid_enc) {
vid->vid_enc = vid->user_vid_enc;
if (!gst_camerabin_add_element (vidbin, vid->vid_enc)) {
goto error;
}
} else if (!(vid->vid_enc =
gst_camerabin_create_and_add_element (vidbin, DEFAULT_VID_ENC))) {
goto error;
}
/* Add user set or default muxer element */
if (vid->user_mux) {
vid->muxer = vid->user_mux;
if (!gst_camerabin_add_element (vidbin, vid->muxer)) {
goto error;
}
} else if (!(vid->muxer =
gst_camerabin_create_and_add_element (vidbin, DEFAULT_MUX))) {
goto error;
}
/* Add sink element for storing the video */
if (!(vid->sink =
gst_camerabin_create_and_add_element (vidbin, DEFAULT_SINK))) {
goto error;
}
g_object_set (G_OBJECT (vid->sink), "location", vid->filename->str, "buffer-mode", 2, /* non buffered io */
NULL);
if (!(vid->flags & GST_CAMERABIN_FLAG_DISABLE_AUDIO)) {
/* Add user set or default audio source element */
if (!(vid->aud_src = gst_camerabin_setup_default_element (vidbin,
vid->user_aud_src, "autoaudiosrc", DEFAULT_AUDIOSRC))) {
vid->aud_src = NULL;
goto error;
} else {
if (!gst_camerabin_add_element (vidbin, vid->aud_src))
goto error;
}
/* Add queue element for audio */
if (!(gst_camerabin_create_and_add_element (vidbin, "queue"))) {
goto error;
}
/* Add optional audio conversion and volume elements and
raise no errors if adding them fails */
if (vid->flags & GST_CAMERABIN_FLAG_AUDIO_CONVERSION) {
if (!gst_camerabin_try_add_element (vidbin,
gst_element_factory_make ("audioconvert", NULL))) {
GST_WARNING_OBJECT (vid, "unable to add audio conversion element");
/* gst_camerabin_try_add_element() destroyed the element */
}
}
vid->volume = gst_element_factory_make ("volume", NULL);
if (!gst_camerabin_try_add_element (vidbin, vid->volume)) {
GST_WARNING_OBJECT (vid, "unable to add volume element");
/* gst_camerabin_try_add_element() destroyed the element */
vid->volume = NULL;
} else {
g_object_set (vid->volume, "mute", vid->mute, NULL);
}
/* Add user set or default audio encoder element */
if (vid->user_aud_enc) {
vid->aud_enc = vid->user_aud_enc;
if (!gst_camerabin_add_element (vidbin, vid->aud_enc)) {
goto error;
}
} else if (!(vid->aud_enc =
gst_camerabin_create_and_add_element (vidbin, DEFAULT_AUD_ENC))) {
goto error;
}
/* Link audio part to the muxer */
if (!gst_element_link (vid->aud_enc, vid->muxer)) {
GST_ELEMENT_ERROR (vid, CORE, NEGOTIATION, (NULL),
("linking audio encoder and muxer failed"));
goto error;
}
}
/* Add queue leading out of the video bin and to view finder */
vid->tee_vf_srcpad = gst_element_get_request_pad (vid->tee, "src%d");
if (!(queue = gst_camerabin_create_and_add_element (vidbin, "queue"))) {
goto error;
}
/* Set queue leaky, we don't want to block video encoder feed, but
prefer leaking view finder buffers instead. */
g_object_set (G_OBJECT (queue), "leaky", 2, "max-size-buffers", 1, NULL);
/* Set up src ghost pad for video bin */
vid_srcpad = gst_element_get_static_pad (queue, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD (vid->srcpad), vid_srcpad);
/* Never let video bin eos events reach view finder */
vid->vid_src_probe_id = gst_pad_add_event_probe (vid_srcpad,
G_CALLBACK (gst_camerabin_drop_eos_probe), vid);
gst_object_unref (vid_srcpad);
if (!(vid->flags & GST_CAMERABIN_FLAG_DISABLE_AUDIO)) {
pad = gst_element_get_static_pad (vid->aud_src, "src");
vid->aud_src_probe_id = gst_pad_add_buffer_probe (pad,
G_CALLBACK (camerabin_video_pad_aud_src_have_buffer), vid);
gst_object_unref (pad);
}
GST_DEBUG ("created video elements");
return TRUE;
error:
gst_camerabin_video_destroy_elements (vid);
return FALSE;
}
/*
* gst_camerabin_video_destroy_elements:
* @vid: a pointer to #GstCameraBinVideo
*
* This function destroys all the elements created by
* gst_camerabin_video_create_elements().
*
*/
static void
gst_camerabin_video_destroy_elements (GstCameraBinVideo * vid)
{
GST_DEBUG ("destroying video elements");
/* Remove buffer probe from audio src pad */
if (vid->aud_src_probe_id) {
GstPad *pad = gst_element_get_static_pad (vid->aud_src, "src");
if (pad) {
gst_pad_remove_buffer_probe (pad, vid->aud_src_probe_id);
gst_object_unref (pad);
}
vid->aud_src_probe_id = 0;
}
/* Remove EOS event probe from videobin srcpad (queue's srcpad) */
if (vid->vid_src_probe_id) {
GstPad *pad = gst_ghost_pad_get_target (GST_GHOST_PAD (vid->srcpad));
if (pad) {
gst_pad_remove_event_probe (pad, vid->vid_src_probe_id);
gst_object_unref (pad);
}
vid->vid_src_probe_id = 0;
}
/* Remove buffer probe from video tee srcpad */
if (vid->vid_tee_probe_id) {
gst_pad_remove_buffer_probe (vid->tee_video_srcpad, vid->vid_tee_probe_id);
vid->vid_tee_probe_id = 0;
}
/* Release tee request pads */
if (vid->tee_video_srcpad) {
gst_element_release_request_pad (vid->tee, vid->tee_video_srcpad);
gst_object_unref (vid->tee_video_srcpad);
vid->tee_video_srcpad = NULL;
}
if (vid->tee_vf_srcpad) {
gst_element_release_request_pad (vid->tee, vid->tee_vf_srcpad);
gst_object_unref (vid->tee_vf_srcpad);
vid->tee_vf_srcpad = NULL;
}
gst_ghost_pad_set_target (GST_GHOST_PAD (vid->sinkpad), NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD (vid->srcpad), NULL);
gst_camerabin_remove_elements_from_bin (GST_BIN (vid));
vid->aud_src = NULL;
vid->sink = NULL;
vid->tee = NULL;
vid->volume = NULL;
vid->video_queue = NULL;
vid->vid_enc = NULL;
vid->aud_enc = NULL;
vid->muxer = NULL;
if (vid->pending_eos) {
gst_event_unref (vid->pending_eos);
vid->pending_eos = NULL;
}
}
/*
* Set & get mute and video capture elements
*/
void
gst_camerabin_video_set_mute (GstCameraBinVideo * vid, gboolean mute)
{
g_return_if_fail (vid != NULL);
GST_DEBUG_OBJECT (vid, "setting mute %s", mute ? "on" : "off");
vid->mute = mute;
if (vid->volume) {
g_object_set (vid->volume, "mute", mute, NULL);
}
}
void
gst_camerabin_video_set_post (GstCameraBinVideo * vid, GstElement * post)
{
GstElement **user_post;
GST_DEBUG_OBJECT (vid, "setting video post processing: %" GST_PTR_FORMAT,
post);
GST_OBJECT_LOCK (vid);
user_post = &vid->user_post;
gst_object_replace ((GstObject **) user_post, GST_OBJECT (post));
GST_OBJECT_UNLOCK (vid);
}
void
gst_camerabin_video_set_video_enc (GstCameraBinVideo * vid,
GstElement * video_enc)
{
GstElement **user_vid_enc;
GST_DEBUG_OBJECT (vid, "setting video encoder: %" GST_PTR_FORMAT, video_enc);
GST_OBJECT_LOCK (vid);
user_vid_enc = &vid->user_vid_enc;
gst_object_replace ((GstObject **) user_vid_enc, GST_OBJECT (video_enc));
GST_OBJECT_UNLOCK (vid);
}
void
gst_camerabin_video_set_audio_enc (GstCameraBinVideo * vid,
GstElement * audio_enc)
{
GstElement **user_aud_enc;
GST_DEBUG_OBJECT (vid, "setting audio encoder: %" GST_PTR_FORMAT, audio_enc);
GST_OBJECT_LOCK (vid);
user_aud_enc = &vid->user_aud_enc;
gst_object_replace ((GstObject **) user_aud_enc, GST_OBJECT (audio_enc));
GST_OBJECT_UNLOCK (vid);
}
void
gst_camerabin_video_set_muxer (GstCameraBinVideo * vid, GstElement * muxer)
{
GstElement **user_mux;
GST_DEBUG_OBJECT (vid, "setting muxer: %" GST_PTR_FORMAT, muxer);
GST_OBJECT_LOCK (vid);
user_mux = &vid->user_mux;
gst_object_replace ((GstObject **) user_mux, GST_OBJECT (muxer));
GST_OBJECT_UNLOCK (vid);
}
void
gst_camerabin_video_set_audio_src (GstCameraBinVideo * vid,
GstElement * audio_src)
{
GstElement **user_aud_src;
GST_DEBUG_OBJECT (vid, "setting audio source: %" GST_PTR_FORMAT, audio_src);
GST_OBJECT_LOCK (vid);
user_aud_src = &vid->user_aud_src;
gst_object_replace ((GstObject **) user_aud_src, GST_OBJECT (audio_src));
GST_OBJECT_UNLOCK (vid);
}
void
gst_camerabin_video_set_flags (GstCameraBinVideo * vid, GstCameraBinFlags flags)
{
GST_DEBUG_OBJECT (vid, "setting video flags: %d", flags);
GST_OBJECT_LOCK (vid);
vid->flags = flags;
GST_OBJECT_UNLOCK (vid);
}
gboolean
gst_camerabin_video_get_mute (GstCameraBinVideo * vid)
{
g_return_val_if_fail (vid != NULL, FALSE);
if (vid->volume) {
g_object_get (vid->volume, "mute", &vid->mute, NULL);
}
return vid->mute;
}
GstElement *
gst_camerabin_video_get_post (GstCameraBinVideo * vid)
{
return vid->user_post;
}
GstElement *
gst_camerabin_video_get_video_enc (GstCameraBinVideo * vid)
{
return vid->vid_enc ? vid->vid_enc : vid->user_vid_enc;
}
GstElement *
gst_camerabin_video_get_audio_enc (GstCameraBinVideo * vid)
{
return vid->aud_enc ? vid->aud_enc : vid->user_aud_enc;
}
GstElement *
gst_camerabin_video_get_muxer (GstCameraBinVideo * vid)
{
return vid->muxer ? vid->muxer : vid->user_mux;
}
GstElement *
gst_camerabin_video_get_audio_src (GstCameraBinVideo * vid)
{
return vid->aud_src ? vid->aud_src : vid->user_aud_src;
}
Reference in a new issue View git blame Copy permalink