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gstreamer/gst-libs/gst/play/play.old.c
Julien Moutte 7ca8563737 Made a theorical libgstplay which refs/unrefs elements before putting them in AsyncQueue. 
Original commit message from CVS:
Made a theorical libgstplay which refs/unrefs elements before putting them in AsyncQueue.
Added a "pipeline_error" signal which will later allow the player and apps to detect that pipeline was unable to play and why...
This version is NOT STABLE AT ALL. it will need fixes in core but i commit it as is so that we fix those problems
2003-04-20 21:06:55 +00:00

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/* GStreamer
* Copyright (C) 1999,2000,2001,2002 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2001,2002 Wim Taymans <wtay@chello.be>
* 2002 Steve Baker <steve@stevebaker.org>
* 2003 Julien Moutte <julien@moutte.net>
*
* play.c: GstPlay object code
*
* 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.
*/
#include "play.h"
enum {
STREAM_END,
INFORMATION,
STATE_CHANGE,
STREAM_LENGTH,
TIME_TICK,
HAVE_XID,
HAVE_VIS_XID,
HAVE_VIDEO_SIZE,
LAST_SIGNAL,
PIPELINE_ERROR,
};
/* this struct is used to decouple signals coming out of threaded pipelines */
typedef struct _GstPlaySignal GstPlaySignal;
struct _GstPlaySignal
{
gint signal_id;
union {
struct {
gint width;
gint height;
} video_size;
struct {
gint xid;
} video_xid;
struct {
GstElementState old_state;
GstElementState new_state;
} state;
struct {
GstElement* element;
GParamSpec* param;
} info;
struct {
GstElement* element;
gchar* error;
} error;
} signal_data;
};
enum
{
ARG_0,
ARG_LOCATION,
ARG_VOLUME,
ARG_MUTE,
/* FILL ME */
};
static guint gst_play_signals [LAST_SIGNAL] = { 0 };
static GstElementClass *parent_class = NULL;
/* ============================================================= */
/* */
/* Private Methods */
/* */
/* ============================================================= */
/* =========================================== */
/* */
/* Tool Box */
/* */
/* =========================================== */
static GQuark
gst_play_error_quark (void)
{
static GQuark quark = 0;
if (quark == 0) {
quark = g_quark_from_static_string ("gst-play-error-quark");
}
return quark;
}
/* GError creation when plugin is missing
* If we want to make error messages less
* generic and have more errors than only
* plug-ins, move the message creation to the switch */
static void
gst_play_error_plugin ( GstPlayError type,
GError **error)
{
gchar *name;
if (error == NULL) return;
switch (type)
{
case GST_PLAY_ERROR_THREAD:
name = g_strdup ("thread");
break;
case GST_PLAY_ERROR_QUEUE:
name = g_strdup ("queue");
break;
case GST_PLAY_ERROR_FAKESINK:
name = g_strdup ("fakesink");
break;
case GST_PLAY_ERROR_VOLUME:
name = g_strdup ("volume");
break;
case GST_PLAY_ERROR_COLORSPACE:
name = g_strdup ("colorspace");
break;
case GST_PLAY_ERROR_GNOMEVFSSRC:
name = g_strdup ("gnomevfssrc");
break;
default:
name = g_strdup ("unknown");
break;
}
*error = g_error_new ( GST_PLAY_ERROR,
type,
"The %s plug-in could not be found. "
"This plug-in is essential for gst-player. "
"Please install it and verify that it works "
"by running 'gst-inspect %s'",
name, name);
g_free (name);
return;
}
static void
gst_play_set_property ( GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GstPlay *play;
g_return_if_fail (object != NULL);
g_return_if_fail (GST_IS_PLAY (object));
play = GST_PLAY (object);
switch (prop_id) {
case ARG_LOCATION:
gst_play_set_location(play, g_value_get_string (value));
break;
case ARG_VOLUME:
gst_play_set_volume(play, g_value_get_float (value));
break;
case ARG_MUTE:
gst_play_set_mute(play, g_value_get_boolean (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_play_get_property ( GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GstPlay *play;
g_return_if_fail (object != NULL);
g_return_if_fail (GST_IS_PLAY (object));
play = GST_PLAY (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, gst_play_get_location(play));
break;
case ARG_VOLUME:
g_value_set_float(value, gst_play_get_volume(play));
break;
case ARG_MUTE:
g_value_set_boolean (value, gst_play_get_mute(play));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* =========================================== */
/* */
/* Event Handlers, Callbacks */
/* */
/* =========================================== */
static gboolean
gst_play_get_length_callback (GstPlay *play)
{
gint64 value;
GstFormat format = GST_FORMAT_TIME;
gboolean query_worked = FALSE;
g_print("trying to get length\n");
if ( (play->audio_sink_element != NULL) &&
(GST_IS_ELEMENT (play->audio_sink_element)) ) {
g_mutex_lock(play->audio_bin_mutex);
query_worked = gst_element_query (play->audio_sink_element, GST_QUERY_TOTAL, &format, &value);
g_mutex_unlock(play->audio_bin_mutex);
}
else if ( (play->video_sink_element != NULL) &&
(GST_IS_ELEMENT (play->video_sink_element)) ) {
g_mutex_lock(play->video_bin_mutex);
query_worked = gst_element_query (play->video_sink_element, GST_QUERY_TOTAL, &format, &value);
g_mutex_unlock(play->video_bin_mutex);
}
if (query_worked){
g_print("got length %" G_GINT64_FORMAT "\n", value);
g_signal_emit (G_OBJECT (play), gst_play_signals [STREAM_LENGTH], 0, value);
play->length_nanos = value;
return FALSE;
}
else {
if (play->get_length_attempt-- < 1){
/* we've tried enough times, give up */
return FALSE;
}
}
return (gst_element_get_state(play->pipeline) == GST_STATE_PLAYING);
}
static gboolean
gst_play_tick_callback (GstPlay *play)
{
gint secs;
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY(play), FALSE);
play->clock = gst_bin_get_clock (GST_BIN (play->pipeline));
play->time_nanos = gst_clock_get_time(play->clock);
secs = (gint) (play->time_nanos / GST_SECOND);
if (secs != play->time_seconds){
play->time_seconds = secs;
g_signal_emit (G_OBJECT (play), gst_play_signals [TIME_TICK], 0, play->time_nanos);
}
return (gst_element_get_state(play->pipeline) == GST_STATE_PLAYING);
}
static gboolean
gst_play_default_idle (GstPlayIdleData *idle_data)
{
if(idle_data->func(idle_data->data)){
/* call this function again in the future */
return TRUE;
}
/* this function should no longer be called */
g_free(idle_data);
return FALSE;
}
static guint
gst_play_default_timeout_add ( guint interval,
GSourceFunc function,
gpointer data)
{
GstPlayIdleData *idle_data = g_new0(GstPlayIdleData, 1);
idle_data->func = function;
idle_data->data = data;
return g_timeout_add (interval, (GSourceFunc)gst_play_default_idle, idle_data);
}
static guint
gst_play_default_idle_add ( GSourceFunc function,
gpointer data)
{
GstPlayIdleData *idle_data = g_new0(GstPlayIdleData, 1);
idle_data->func = function;
idle_data->data = data;
return g_idle_add ((GSourceFunc)gst_play_default_idle, idle_data);
}
static gboolean
gst_play_idle_callback (GstPlay *play)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY(play), FALSE);
return gst_bin_iterate (GST_BIN (play->pipeline));
}
static gboolean
gst_play_idle_signal (GstPlay *play)
{
GstPlaySignal *signal;
gint queue_length;
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY(play), FALSE);
signal = g_async_queue_try_pop(play->signal_queue);
if (signal == NULL){
return FALSE;
}
switch (signal->signal_id){
case HAVE_XID:
g_signal_emit (G_OBJECT (play), gst_play_signals[HAVE_XID], 0,
signal->signal_data.video_xid.xid);
break;
case HAVE_VIS_XID:
g_signal_emit (G_OBJECT (play), gst_play_signals[HAVE_VIS_XID], 0,
signal->signal_data.video_xid.xid);
break;
case HAVE_VIDEO_SIZE:
g_signal_emit (G_OBJECT (play), gst_play_signals[HAVE_VIDEO_SIZE], 0,
signal->signal_data.video_size.width, signal->signal_data.video_size.height);
break;
case STATE_CHANGE:
g_signal_emit (G_OBJECT (play), gst_play_signals[STATE_CHANGE], 0,
signal->signal_data.state.old_state, signal->signal_data.state.new_state);
break;
case INFORMATION:
g_signal_emit (G_OBJECT (play), gst_play_signals[INFORMATION], 0,
signal->signal_data.info.element, signal->signal_data.info.param);
gst_object_unref (GST_OBJECT(signal->signal_data.info.element));
break;
case PIPELINE_ERROR:
if (gst_element_get_state(play->pipeline) == GST_STATE_PLAYING)
gst_element_set_state(play->pipeline, GST_STATE_READY);
g_signal_emit (G_OBJECT (play), gst_play_signals[PIPELINE_ERROR], 0,
signal->signal_data.error.element, signal->signal_data.error.error);
gst_object_unref (GST_OBJECT(signal->signal_data.error.element));
break;
default:
break;
}
g_free(signal);
queue_length = g_async_queue_length (play->signal_queue);
return (queue_length > 0);
}
static gboolean
gst_play_idle_eos (GstPlay* play)
{
g_signal_emit (G_OBJECT (play), gst_play_signals [STREAM_END], 0);
return FALSE;
}
static void
callback_audio_sink_eos ( GstElement *element,
GstPlay *play)
{
play->idle_add_func ((GSourceFunc) gst_play_idle_eos, play);
}
static void
callback_video_have_xid ( GstElement *element,
gint xid,
GstPlay *play)
{
GstPlaySignal *signal;
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = HAVE_XID;
signal->signal_data.video_xid.xid = xid;
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
static void
callback_video_have_vis_xid ( GstElement *element,
gint xid,
GstPlay *play)
{
GstPlaySignal *signal;
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = HAVE_VIS_XID;
signal->signal_data.video_xid.xid = xid;
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
static void
callback_video_have_size ( GstElement *element,
gint width,
gint height,
GstPlay *play)
{
GstPlaySignal *signal;
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = HAVE_VIDEO_SIZE;
signal->signal_data.video_size.width = width;
signal->signal_data.video_size.height = height;
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
static void
callback_bin_pre_iterate ( GstBin *bin,
GMutex *mutex)
{
g_mutex_lock(mutex);
}
static void
callback_bin_post_iterate ( GstBin *bin,
GMutex *mutex)
{
g_mutex_unlock(mutex);
}
static void
callback_pipeline_error ( GstElement *object,
GstElement *orig,
gchar *error,
GstPlay* play)
{
GstPlaySignal *signal;
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = PIPELINE_ERROR;
signal->signal_data.error.element = orig;
signal->signal_data.error.error = error;
gst_object_ref (GST_OBJECT(orig));
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
static void
callback_pipeline_deep_notify ( GstElement *element,
GstElement *orig,
GParamSpec *param,
GstPlay* play)
{
GstPlaySignal *signal;
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = INFORMATION;
signal->signal_data.info.element = orig;
signal->signal_data.info.param = param;
gst_object_ref (GST_OBJECT(orig));
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
static void
callback_pipeline_state_change ( GstElement *element,
GstElementState old,
GstElementState state,
GstPlay* play)
{
GstPlaySignal *signal;
g_return_if_fail (play != NULL);
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_ELEMENT (element));
g_return_if_fail (GST_IS_PLAY (play));
g_return_if_fail (element == play->pipeline);
/*g_print ("got state change %s to %s\n", gst_element_state_get_name (old), gst_element_state_get_name (state));*/
/* do additional stuff depending on state */
if (GST_IS_PIPELINE (play->pipeline)){
switch (state) {
case GST_STATE_PLAYING:
play->idle_add_func ( (GSourceFunc) gst_play_idle_callback,
play);
play->timeout_add_func ( 200,
(GSourceFunc) gst_play_tick_callback,
play);
if (play->length_nanos == 0LL){
/* try to get the length up to 16 times */
play->get_length_attempt = 16;
play->timeout_add_func (200, (GSourceFunc) gst_play_get_length_callback, play);
}
break;
default:
break;
}
}
signal = g_new0(GstPlaySignal, 1);
signal->signal_id = STATE_CHANGE;
signal->signal_data.state.old_state = old;
signal->signal_data.state.new_state = state;
g_async_queue_push(play->signal_queue, signal);
play->idle_add_func ((GSourceFunc) gst_play_idle_signal, play);
}
/* split static pipeline functions to a seperate file */
#include "playpipelines.c"
/* =========================================== */
/* */
/* Init & Class init */
/* */
/* =========================================== */
static void
gst_play_dispose (GObject *object)
{
g_return_if_fail (object != NULL);
g_return_if_fail (GST_IS_PLAY(object));
GstPlay *play = GST_PLAY (object);
/* Removing all sources */
while (g_source_remove_by_user_data (play));
G_OBJECT_CLASS (parent_class)->dispose (object);
g_mutex_free(play->audio_bin_mutex);
g_mutex_free(play->video_bin_mutex);
}
static void
gst_play_class_init (GstPlayClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_ref(GST_TYPE_OBJECT);
klass->information = NULL;
klass->state_changed = NULL;
klass->stream_end = NULL;
gobject_class->dispose = gst_play_dispose;
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_play_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_play_get_property);
g_object_class_install_property (
gobject_class,
ARG_LOCATION,
g_param_spec_string (
"location",
"location of file",
"location of the file to play",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (
gobject_class,
ARG_VOLUME,
g_param_spec_float (
"volume",
"Playing volume",
"Playing volume",
0, 1.0, 0, G_PARAM_READWRITE));
g_object_class_install_property (
gobject_class,
ARG_MUTE,
g_param_spec_boolean (
"mute",
"Volume muted",
"Playing volume muted",
FALSE, G_PARAM_READWRITE));
gst_play_signals [INFORMATION] =
g_signal_new ("information",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, information),
NULL, NULL,
gst_marshal_VOID__OBJECT_PARAM,
G_TYPE_NONE, 2,
G_TYPE_OBJECT, G_TYPE_PARAM);
gst_play_signals [PIPELINE_ERROR] =
g_signal_new ("pipeline_error",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, pipeline_error),
NULL, NULL,
gst_marshal_VOID__OBJECT_PARAM,
G_TYPE_NONE, 2,
G_TYPE_OBJECT, G_TYPE_PARAM);
gst_play_signals [STATE_CHANGE] =
g_signal_new ("state_change",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, state_changed),
NULL, NULL,
gst_marshal_VOID__INT_INT,
G_TYPE_NONE, 2,
G_TYPE_INT, G_TYPE_INT);
gst_play_signals [STREAM_END] =
g_signal_new ("stream_end",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, stream_end),
NULL, NULL,
gst_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gst_play_signals [TIME_TICK] =
g_signal_new ("time_tick",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, time_tick),
NULL, NULL,
gst_marshal_VOID__INT64,
G_TYPE_NONE, 1,
G_TYPE_INT64);
gst_play_signals [STREAM_LENGTH] =
g_signal_new ("stream_length",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, stream_length),
NULL, NULL,
gst_marshal_VOID__INT64,
G_TYPE_NONE, 1,
G_TYPE_INT64);
gst_play_signals [HAVE_XID] =
g_signal_new ("have_xid",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, have_xid),
NULL, NULL,
gst_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
gst_play_signals [HAVE_VIS_XID] =
g_signal_new ("have_vis_xid",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, have_vis_xid),
NULL, NULL,
gst_marshal_VOID__INT,
G_TYPE_NONE, 1,
G_TYPE_INT);
gst_play_signals [HAVE_VIDEO_SIZE] =
g_signal_new ("have_video_size",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GstPlayClass, have_video_size),
NULL, NULL,
gst_marshal_VOID__INT_INT,
G_TYPE_NONE, 2,
G_TYPE_INT, G_TYPE_INT);
gst_control_init(NULL,NULL);
}
static void
gst_play_init (GstPlay *play)
{
play->pipeline = NULL;
play->source = NULL;
play->autoplugger = NULL;
play->audio_sink = NULL;
play->audio_sink_element = NULL;
play->video_sink = NULL;
play->video_sink_element = NULL;
play->volume = NULL;
play->other_elements = g_hash_table_new(g_str_hash, g_str_equal);
play->audio_bin_mutex = g_mutex_new();
play->video_bin_mutex = g_mutex_new();
gst_play_set_idle_timeout_funcs( play,
gst_play_default_timeout_add,
gst_play_default_idle_add);
}
/* ============================================================= */
/* */
/* Public Methods */
/* */
/* ============================================================= */
/* =========================================== */
/* */
/* Toolbox */
/* */
/* =========================================== */
/**
* gst_play_seek_to_time:
* @play: a #GstPlay.
* @time_nanos: a #gint64 indicating a time position.
*
* Performs a seek on @play until @time_nanos.
*/
void
gst_play_seek_to_time ( GstPlay *play,
gint64 time_nanos)
{
GstEvent *s_event;
guint8 prev_state;
gboolean audio_seek_worked = FALSE;
gboolean video_seek_worked = FALSE;
gboolean visualisation_seek_worked = FALSE;
g_return_if_fail (play != NULL);
g_return_if_fail (GST_IS_PLAY (play));
if (time_nanos < 0LL){
play->seek_time = 0LL;
}
else if (time_nanos < 0LL){
play->seek_time = play->length_nanos;
}
else {
play->seek_time = time_nanos;
}
/*g_print("doing seek to %lld\n", play->seek_time);*/
prev_state = GST_STATE(play->pipeline);
gst_element_set_state(play->pipeline, GST_STATE_PAUSED);
s_event = gst_event_new_seek (GST_FORMAT_TIME |
GST_SEEK_METHOD_SET |
GST_SEEK_FLAG_FLUSH, play->seek_time);
if (play->audio_sink_element != NULL){
gst_event_ref (s_event);
audio_seek_worked = gst_element_send_event (
play->audio_sink_element, s_event);
}
if (play->visualisation_sink_element != NULL){
gst_event_ref (s_event);
visualisation_seek_worked = gst_element_send_event (
play->visualisation_sink_element, s_event);
}
if (play->video_sink_element != NULL){
gst_event_ref (s_event);
video_seek_worked = gst_element_send_event (
play->video_sink_element, s_event);
}
gst_event_unref (s_event);
if (audio_seek_worked || video_seek_worked){
play->time_nanos = gst_clock_get_time(play->clock);
g_signal_emit (G_OBJECT (play), gst_play_signals [TIME_TICK], 0, play->time_nanos);
}
gst_element_set_state(play->pipeline, prev_state);
}
/**
* gst_play_need_new_video_window:
* @play: a #GstPlay.
*
* Request a new video window for @play.
*/
void
gst_play_need_new_video_window (GstPlay *play)
{
g_return_if_fail (play != NULL);
g_return_if_fail (GST_IS_PLAY (play));
if (GST_IS_ELEMENT(play->video_sink_element)){
g_object_set( G_OBJECT(play->video_sink_element),
"need_new_window", TRUE, NULL);
}
if (GST_IS_ELEMENT(play->visualisation_sink_element)){
g_object_set( G_OBJECT(play->visualisation_sink_element),
"need_new_window", TRUE, NULL);
}
}
void
gst_play_set_idle_timeout_funcs ( GstPlay *play,
GstPlayTimeoutAdd timeout_add_func,
GstPlayIdleAdd idle_add_func)
{
g_return_if_fail (play != NULL);
g_return_if_fail (GST_IS_PLAY (play));
play->timeout_add_func = timeout_add_func;
play->idle_add_func = idle_add_func;
}
/**
* gst_play_get_sink_element:
* @play: a #GstPlay.
* @element: a #GstElement.
* @sink_type: a #GstPlaySinkType.
*
* Searches recursively for a sink #GstElement with
* type @sink_type in @element which is supposed to be a #GstBin.
*
* Returns: the sink #GstElement of @element.
*/
GstElement*
gst_play_get_sink_element ( GstPlay *play,
GstElement *element,
GstPlaySinkType sink_type)
{
GList *elements = NULL;
const GList *pads = NULL;
gboolean has_src, has_correct_type;
g_return_val_if_fail (play != NULL, NULL);
g_return_val_if_fail (element != NULL, NULL);
g_return_val_if_fail (GST_IS_PLAY (play), NULL);
g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
if (!GST_IS_BIN(element)){
/* since its not a bin, we'll presume this
* element is a sink element */
return element;
}
elements = (GList *) gst_bin_get_list (GST_BIN(element));
/* traverse all elements looking for a src pad */
while (elements) {
element = GST_ELEMENT (elements->data);
/* Recursivity :) */
if (GST_IS_BIN(element)) {
element = gst_play_get_sink_element(play,element,sink_type);
if (GST_IS_ELEMENT (element)) {
return element;
}
}
else {
pads = gst_element_get_pad_list (element);
has_src = FALSE;
has_correct_type = FALSE;
while (pads) {
/* check for src pad */
if (GST_PAD_DIRECTION (GST_PAD (pads->data)) == GST_PAD_SRC) {
has_src = TRUE;
break;
}
else {
/* If not a src pad checking caps */
GstCaps *caps;
caps = gst_pad_get_caps (GST_PAD (pads->data));
while (caps) {
gboolean has_video_cap = FALSE, has_audio_cap = FALSE;
if (g_ascii_strcasecmp( gst_caps_get_mime (caps),
"audio/raw") == 0)
{
has_audio_cap = TRUE;
}
if (g_ascii_strcasecmp( gst_caps_get_mime (caps),
"video/raw") == 0)
{
has_video_cap = TRUE;
}
switch (sink_type) {
case GST_PLAY_SINK_TYPE_AUDIO:
if (has_audio_cap)
has_correct_type = TRUE;
break;;
case GST_PLAY_SINK_TYPE_VIDEO:
if (has_video_cap)
has_correct_type = TRUE;
break;;
case GST_PLAY_SINK_TYPE_ANY:
if ( (has_video_cap) || (has_audio_cap) )
has_correct_type = TRUE;
break;;
default:
has_correct_type = FALSE;
}
caps = caps->next;
}
}
pads = g_list_next (pads);
}
if ( (!has_src) && (has_correct_type) ){
return element;
}
}
elements = g_list_next (elements);
}
/* we didn't find a sink element */
return NULL;
}
/* =========================================== */
/* */
/* State, Mute, Volume, Location */
/* */
/* =========================================== */
/**
* gst_play_set_state:
* @play: a #GstPlay.
* @state: a #GstElementState.
*
* Set state of @play 's pipeline to @state.
*
* Returns: a #GstElementStateReturn indicating if the operation succeeded.
*/
GstElementStateReturn
gst_play_set_state ( GstPlay *play,
GstElementState state)
{
g_return_val_if_fail (play != NULL, GST_STATE_FAILURE);
g_return_val_if_fail (GST_IS_PLAY (play), GST_STATE_FAILURE);
g_return_val_if_fail (GST_IS_ELEMENT(play->pipeline), GST_STATE_FAILURE);
return gst_element_set_state(play->pipeline, state);
}
/**
* gst_play_get_state:
* @play: a #GstPlay.
*
* Get state of @play 's pipeline.
*
* Returns: a #GstElementState indicating @play 's pipeline current state.
*/
GstElementState
gst_play_get_state (GstPlay *play)
{
g_return_val_if_fail (play != NULL, GST_STATE_FAILURE);
g_return_val_if_fail (GST_IS_PLAY (play), GST_STATE_FAILURE);
g_return_val_if_fail (play->pipeline, GST_STATE_FAILURE);
return gst_element_get_state(play->pipeline);
}
/**
* gst_play_set_location:
* @play: a #GstPlay.
* @location: a const #gchar indicating location to play
*
* Set location of @play to @location.
*
* Returns: TRUE if location was set successfully.
*/
gboolean
gst_play_set_location ( GstPlay *play,
const gchar *location)
{
GstElementState current_state;
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
g_return_val_if_fail (location != NULL, FALSE);
current_state = gst_play_get_state (play);
if (current_state != GST_STATE_READY){
gst_play_set_state (play, GST_STATE_READY);
}
if (play->set_autoplugger){
if (! play->set_autoplugger(play, gst_element_factory_make ("spider", "autoplugger"))){
g_warning ("couldn't replace autoplugger\n");
return FALSE;
}
}
/* FIXME check for valid location (somehow) */
g_object_set (G_OBJECT (play->source), "location", location, NULL);
/* reset time/length values */
play->time_seconds = 0;
play->length_nanos = 0LL;
play->time_nanos = 0LL;
g_signal_emit (G_OBJECT (play), gst_play_signals [STREAM_LENGTH], 0, 0LL);
g_signal_emit (G_OBJECT (play), gst_play_signals [TIME_TICK], 0, 0LL);
play->need_stream_length = TRUE;
return TRUE;
}
/**
* gst_play_get_location:
* @play: a #GstPlay.
*
* Get current location of @play.
*
* Returns: a #gchar pointer to current location.
*/
gchar*
gst_play_get_location (GstPlay *play)
{
gchar* location;
g_return_val_if_fail (play != NULL, NULL);
g_return_val_if_fail (GST_IS_PLAY (play), NULL);
g_return_val_if_fail (GST_IS_ELEMENT(play->source), NULL);
g_object_get (G_OBJECT (play->source), "location", &location, NULL);
return location;
}
/**
* gst_play_set_volume:
* @play: a #GstPlay.
* @volume: a #gfloat indicating volume level.
*
* Set current volume of @play.
*/
void
gst_play_set_volume ( GstPlay *play,
gfloat volume)
{
g_return_if_fail (play != NULL);
g_return_if_fail (GST_IS_PLAY (play));
g_object_set(G_OBJECT(play->vol_dparam), "value_float", volume, NULL);
}
/**
* gst_play_get_volume:
* @play: a #GstPlay.
*
* Get current volume of @play.
*
* Returns: a #gfloat indicating current volume level.
*/
gfloat
gst_play_get_volume (GstPlay *play)
{
gfloat volume;
g_return_val_if_fail (play != NULL, 0);
g_return_val_if_fail (GST_IS_PLAY (play), 0);
g_object_get(G_OBJECT(play->vol_dparam), "value_float", &volume, NULL);
return volume;
}
/**
* gst_play_set_mute:
* @play: a #GstPlay.
* @mute: a #gboolean indicating wether audio is muted or not.
*
* Mutes/Unmutes audio playback of @play.
*/
void
gst_play_set_mute ( GstPlay *play,
gboolean mute)
{
g_return_if_fail (play != NULL);
g_return_if_fail (GST_IS_PLAY (play));
g_object_set (G_OBJECT (play->volume), "mute", mute, NULL);
}
/**
* gst_play_get_mute:
* @play: a #GstPlay.
*
* Get current muted status of @play.
*
* Returns: a #gboolean indicating if audio is muted or not.
*/
gboolean
gst_play_get_mute (GstPlay *play)
{
gboolean mute;
g_return_val_if_fail (play != NULL, 0);
g_return_val_if_fail (GST_IS_PLAY (play), 0);
g_object_get (G_OBJECT (play->volume), "mute", &mute, NULL);
return mute;
}
/* =========================================== */
/* */
/* Audio sink, Video sink, Data src */
/* */
/* =========================================== */
/**
* gst_play_set_data_src:
* @play: a #GstPlay.
* @data_src: a #GstElement.
*
* Set @data_src as the source element of @play.
*
* Returns: TRUE if call succeeded.
*/
gboolean
gst_play_set_data_src ( GstPlay *play,
GstElement *data_src)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (data_src != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
g_return_val_if_fail (GST_IS_ELEMENT (data_src), FALSE);
if (gst_play_get_state (play) != GST_STATE_READY){
gst_play_set_state (play, GST_STATE_READY);
}
if (play->set_data_src){
return play->set_data_src(play, data_src);
}
/* if there is no set_data_src func, fail quietly */
return FALSE;
}
/**
* gst_play_set_video_sink:
* @play: a #GstPlay.
* @video_sink: a #GstElement.
*
* Set @video_sink as the video sink element of @play.
*
* Returns: TRUE if call succeeded.
*/
gboolean
gst_play_set_video_sink ( GstPlay *play,
GstElement *video_sink)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (video_sink != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
g_return_val_if_fail (GST_IS_ELEMENT (video_sink), FALSE);
if (gst_play_get_state (play) != GST_STATE_READY){
gst_play_set_state (play, GST_STATE_READY);
}
if (play->set_video_sink){
return play->set_video_sink(play, video_sink);
}
/* if there is no set_video_sink func, fail quietly */
return FALSE;
}
/**
* gst_play_set_audio_sink:
* @play: a #GstPlay.
* @audio_sink: a #GstElement.
*
* Set @audio_sink as the audio sink element of @play.
*
* Returns: TRUE if call succeeded.
*/
gboolean
gst_play_set_audio_sink ( GstPlay *play,
GstElement *audio_sink)
{
g_return_val_if_fail (play != NULL, FALSE);
g_return_val_if_fail (audio_sink != NULL, FALSE);
g_return_val_if_fail (GST_IS_PLAY (play), FALSE);
g_return_val_if_fail (GST_IS_ELEMENT (audio_sink), FALSE);
if (gst_play_get_state (play) != GST_STATE_READY){
gst_play_set_state (play, GST_STATE_READY);
}
if (play->set_audio_sink){
return play->set_audio_sink(play, audio_sink);
}
/* if there is no set_audio_sink func, fail quietly */
return FALSE;
}
/* =========================================== */
/* */
/* Object typing & Creation */
/* */
/* =========================================== */
GType
gst_play_get_type (void)
{
static GType play_type = 0;
if (!play_type)
{
static const GTypeInfo play_info = {
sizeof (GstPlayClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gst_play_class_init,
NULL, NULL, sizeof (GstPlay),
0, (GInstanceInitFunc) gst_play_init,
NULL
};
play_type = g_type_register_static (G_TYPE_OBJECT, "GstPlay", &play_info, 0);
}
return play_type;
}
GstPlay *
gst_play_new ( GstPlayPipeType pipe_type,
GError **error)
{
GstPlay *play;
play = g_object_new (GST_TYPE_PLAY, NULL);
/* FIXME: looks like only VIDEO ever gets used ! */
switch (pipe_type){
case GST_PLAY_PIPE_VIDEO:
play->setup_pipeline = gst_play_video_setup;
play->teardown_pipeline = NULL;
play->set_data_src = gst_play_video_set_data_src;
play->set_autoplugger = gst_play_video_set_auto;
play->set_video_sink = gst_play_video_set_video;
play->set_audio_sink = gst_play_video_set_audio;
break;
case GST_PLAY_PIPE_VIDEO_VISUALISATION:
play->setup_pipeline = gst_play_video_vis_setup;
play->teardown_pipeline = NULL;
play->set_data_src = gst_play_video_set_data_src;
play->set_autoplugger = gst_play_video_set_auto;
play->set_video_sink = gst_play_video_vis_set_video;
play->set_audio_sink = gst_play_video_vis_set_audio;
break;
case GST_PLAY_PIPE_AUDIO:
/* we can reuse the threaded set functions */
play->setup_pipeline = gst_play_audio_setup;
play->teardown_pipeline = NULL;
play->set_data_src = gst_play_simple_set_data_src;
play->set_autoplugger = gst_play_audiot_set_auto;
play->set_video_sink = NULL;
play->set_audio_sink = gst_play_audiot_set_audio;
break;
case GST_PLAY_PIPE_AUDIO_THREADED:
play->setup_pipeline = gst_play_audiot_setup;
play->teardown_pipeline = NULL;
play->set_data_src = gst_play_simple_set_data_src;
play->set_autoplugger = gst_play_audiot_set_auto;
play->set_video_sink = NULL;
play->set_audio_sink = gst_play_audiot_set_audio;
break;
case GST_PLAY_PIPE_AUDIO_HYPER_THREADED:
play->setup_pipeline = gst_play_audioht_setup;
play->teardown_pipeline = NULL;
play->set_data_src = gst_play_simple_set_data_src;
play->set_autoplugger = gst_play_audioht_set_auto;
play->set_video_sink = NULL;
play->set_audio_sink = gst_play_audioht_set_audio;
break;
default:
g_warning("unknown pipeline type: %d\n", pipe_type);
}
/* init pipeline */
if ((play->setup_pipeline) &&
(! play->setup_pipeline (play, error)))
{
g_object_unref (play);
return NULL;
}
if (play->pipeline) {
/* connect to pipeline events */
g_signal_connect ( G_OBJECT (play->pipeline),
"deep_notify",
G_CALLBACK (callback_pipeline_deep_notify),
play);
g_signal_connect ( G_OBJECT (play->pipeline),
"state_change",
G_CALLBACK (callback_pipeline_state_change),
play);
g_signal_connect ( G_OBJECT (play->pipeline),
"error",
G_CALLBACK (callback_pipeline_error),
play);
}
if (play->volume) {
play->vol_dpman = gst_dpman_get_manager(play->volume);
play->vol_dparam = gst_dpsmooth_new(G_TYPE_FLOAT);
g_object_set( G_OBJECT(play->vol_dparam),
"update_period", 2000000LL, NULL);
g_object_set( G_OBJECT(play->vol_dparam),
"slope_delta_float", 0.1F, NULL);
g_object_set( G_OBJECT(play->vol_dparam),
"slope_time", 10000000LL, NULL);
if (!gst_dpman_attach_dparam ( play->vol_dpman,
"volume",
play->vol_dparam))
g_warning("could not attach dparam to volume element\n");
gst_dpman_set_mode(play->vol_dpman, "asynchronous");
gst_play_set_volume(play, 0.9);
}
play->signal_queue = g_async_queue_new();
return play;
}
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