gstreamer/gst-libs/gst/play/play.c
Wim Taymans 1dae961cbf Plugin port to 0.9, ogg/theora playback should work in the seek example now.
Original commit message from CVS:
Plugin port to 0.9, ogg/theora playback should work in the seek
example now.
Removed old examples.
Removed old oggvorbisenc, renamed rawvorbisenc to vorbisenc as
explained in 0.9 TODO doc.
2005-03-31 09:43:49 +00:00

770 lines
19 KiB
C

/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <unistd.h>
#include <gst/gst.h>
#include <gst/gst-i18n-plugin.h>
#include "play.h"
#define TICK_INTERVAL_MSEC 200
GST_DEBUG_CATEGORY_STATIC (play_debug);
#define GST_CAT_DEFAULT play_debug
enum
{
TIME_TICK,
STREAM_LENGTH,
HAVE_VIDEO_SIZE,
LAST_SIGNAL
};
struct _GstPlayPrivate
{
/* progress indicators */
guint64 time_nanos;
guint64 length_nanos;
gint get_length_attempt;
guint tick_id;
/* playbin object */
GstElement *playbin;
/* visualization */
gboolean enable_vis;
GstElement *vis_element;
/* location */
char *location;
};
static guint gst_play_signals[LAST_SIGNAL] = { 0 };
static GstPipelineClass *parent_class = NULL;
/* ======================================================= */
/* */
/* Private Methods */
/* */
/* ======================================================= */
static void
caps_set (GstPad * pad, GParamSpec * pspec, GstPlay * play)
{
const GstCaps *caps = GST_PAD_CAPS (pad);
GstStructure *s = gst_caps_get_structure (caps, 0);
if (s) {
const GValue *par;
gint w, h;
/* get effective size */
gst_structure_get_int (s, "width", &w);
gst_structure_get_int (s, "height", &h);
if ((par = gst_structure_get_value (s, "pixel-aspect-ratio"))) {
gint num = gst_value_get_fraction_numerator (par),
den = gst_value_get_fraction_denominator (par);
if (num > den)
w *= (gfloat) num / den;
else
h *= (gfloat) den / num;
}
g_signal_emit (play, gst_play_signals[HAVE_VIDEO_SIZE], 0, w, h);
g_signal_handlers_disconnect_by_func (pad, caps_set, play);
}
}
static void
setup_size (GstPlay * play)
{
const GList *streaminfo = NULL;
GstPad *pad = NULL;
g_object_get (G_OBJECT (play->priv->playbin),
"stream-info", &streaminfo, NULL);
for (; streaminfo != NULL; streaminfo = streaminfo->next) {
GObject *info = streaminfo->data;
gint type;
GParamSpec *pspec;
GEnumValue *val;
g_object_get (info, "type", &type, NULL);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (info), "type");
val = g_enum_get_value (G_PARAM_SPEC_ENUM (pspec)->enum_class, type);
if (g_strrstr (val->value_name, "VIDEO")) {
g_object_get (info, "object", &pad, NULL);
pad = (GstPad *) GST_PAD_REALIZE (pad);
break;
}
}
if (pad) {
/* handle explicit caps as well - they're set later */
if (GST_PAD_CAPS (pad))
caps_set (pad, NULL, play);
else
g_signal_connect (pad, "notify::caps", G_CALLBACK (caps_set), play);
}
}
static gboolean
gst_play_tick_callback (GstPlay * play)
{
GstFormat fmt = GST_FORMAT_TIME;
gint64 value;
/* check length/pos of stream */
if (!GST_CLOCK_TIME_IS_VALID (play->priv->length_nanos) &&
play->priv->get_length_attempt < 16) {
if (gst_element_query (GST_ELEMENT (play->priv->playbin),
GST_QUERY_TOTAL, &fmt, &value)) {
play->priv->length_nanos = value;
g_signal_emit (G_OBJECT (play), gst_play_signals[STREAM_LENGTH],
0, play->priv->length_nanos);
}
play->priv->get_length_attempt++;
}
if (gst_element_query (GST_ELEMENT (play->priv->playbin),
GST_QUERY_POSITION, &fmt, &value)) {
play->priv->time_nanos = value;
g_signal_emit (G_OBJECT (play), gst_play_signals[TIME_TICK],
0, play->priv->time_nanos);
}
return TRUE;
}
/*
* Virtual function.
*/
static void
gst_play_change_state (GstElement * element,
GstElementState old, GstElementState new, gpointer data)
{
GstPlay *play = GST_PLAY (data);
gint t = (old << 8) | new;
/* now set up tickers */
switch (t) {
case GST_STATE_PAUSED_TO_PLAYING:
play->priv->tick_id = g_timeout_add (TICK_INTERVAL_MSEC,
(GSourceFunc) gst_play_tick_callback, play);
break;
case GST_STATE_PLAYING_TO_PAUSED:
if (play->priv->tick_id != 0) {
g_source_remove (play->priv->tick_id);
play->priv->tick_id = 0;
}
break;
case GST_STATE_PAUSED_TO_READY:
play->priv->length_nanos = GST_CLOCK_TIME_NONE;
play->priv->time_nanos = GST_CLOCK_TIME_NONE;
play->priv->get_length_attempt = 0;
break;
case GST_STATE_READY_TO_PAUSED:
setup_size (play);
break;
default:
break;
}
}
/* =========================================== */
/* */
/* Init & Dispose & Class init */
/* */
/* =========================================== */
static void
gst_play_dispose (GObject * object)
{
GstPlay *play = GST_PLAY (object);
/* reset */
gst_element_set_state (GST_ELEMENT (play), GST_STATE_NULL);
/* no vis */
if (play->priv->vis_element) {
gst_object_unref (GST_OBJECT (play->priv->vis_element));
play->priv->vis_element = NULL;
}
g_free (play->priv->location);
play->priv->location = NULL;
/* parent will clean up the rest */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_play_init (GstPlay * play)
{
play->priv = g_new0 (GstPlayPrivate, 1);
/* default */
play->priv->length_nanos = GST_CLOCK_TIME_NONE;
play->priv->time_nanos = GST_CLOCK_TIME_NONE;
play->priv->tick_id = 0;
play->priv->get_length_attempt = 0;
play->priv->enable_vis = FALSE;
play->priv->vis_element = NULL;
play->priv->location = NULL;
/* make playbin */
play->priv->playbin = gst_element_factory_make ("playbin", "player");
if (play->priv->playbin) {
gst_bin_add (GST_BIN (play), play->priv->playbin);
g_signal_connect (play->priv->playbin, "state-change",
G_CALLBACK (gst_play_change_state), play);
}
}
static void
gst_play_class_init (GstPlayClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_ref (GST_TYPE_PIPELINE);
gobject_class->dispose = gst_play_dispose;
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_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_DEBUG_CATEGORY_INIT (play_debug, "GST_PLAY", 0, "GStreamer Play library");
GST_DEBUG ("Play class initialized");
}
/* ======================================================= */
/* */
/* Public Methods */
/* */
/* ======================================================= */
/**
* gst_play_set_location:
* @play: a #GstPlay.
* @location: a const #char* 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 char *location)
{
char *uri;
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);
/* cache */
if (play->priv->location)
g_free (play->priv->location);
play->priv->location = g_strdup (location);
/* get file */
gst_element_set_state (play->priv->playbin, GST_STATE_READY);
if (strchr (location, ':'))
uri = g_strdup (location);
else if (location[0] == '/')
uri = g_strdup_printf ("file://%s", location);
else {
char cwd[256];
getcwd (cwd, 255);
uri = g_strdup_printf ("file://%s/%s", cwd, location);
}
g_object_set (play->priv->playbin, "uri", uri, NULL);
g_free (uri);
/* open */
if (gst_element_set_state (play->priv->playbin,
GST_STATE_PAUSED) != GST_STATE_SUCCESS) {
return FALSE;
}
return TRUE;
}
/**
* gst_play_get_location:
* @play: a #GstPlay.
*
* Get current location of @play.
*
* Returns: a #char* pointer to current location.
*/
char *
gst_play_get_location (GstPlay * play)
{
g_return_val_if_fail (play != NULL, NULL);
g_return_val_if_fail (GST_IS_PLAY (play), NULL);
return g_strdup (play->priv->location);
}
/**
* gst_play_seek_to_time:
* @play: a #GstPlay.
* @time_nanos: a #gint64 indicating a time position.
*
* Performs a seek on @play until @time_nanos.
*/
/*
* FIXME: use GstClockTime for 0.9
*/
gboolean
gst_play_seek_to_time (GstPlay * play, gint64 time_nanos)
{
return gst_element_seek (play->priv->playbin,
GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH, time_nanos);
}
/**
* 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)
{
/* deprecated - use URIs */
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_object_set (G_OBJECT (play->priv->playbin), "video-sink", video_sink, NULL);
return TRUE;
}
/**
* 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_object_set (G_OBJECT (play->priv->playbin), "audio-sink", audio_sink, NULL);
return TRUE;
}
/**
* gst_play_set_visualization:
* @play: a #GstPlay.
* @element: a #GstElement.
*
* Set @video_sink as the video sink element of @play.
*
* Returns: TRUE if call succeeded.
*/
gboolean
gst_play_set_visualization (GstPlay * play, GstElement * vis_element)
{
/* unset old */
if (play->priv->vis_element) {
gst_object_unref (GST_OBJECT (play->priv->vis_element));
play->priv->vis_element = NULL;
}
/* set new */
if (vis_element) {
gst_object_ref (GST_OBJECT (vis_element));
play->priv->vis_element = vis_element;
}
/* use */
if (play->priv->vis_element && play->priv->enable_vis) {
g_object_set (G_OBJECT (play->priv->playbin),
"vis-plugin", vis_element, NULL);
} else {
g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", NULL, NULL);
}
return TRUE;
}
/**
* gst_play_connect_visualization:
* @play: a #GstPlay.
* @connect: a #gboolean indicating wether or not
* visualization should be connected.
*
* Connect or disconnect visualization bin in @play.
*
* Returns: TRUE if call succeeded.
*/
gboolean
gst_play_connect_visualization (GstPlay * play, gboolean connect)
{
play->priv->enable_vis = connect;
/* use */
if (play->priv->vis_element && play->priv->enable_vis) {
g_object_set (G_OBJECT (play->priv->playbin),
"vis-plugin", play->priv->vis_element, NULL);
} else {
g_object_set (G_OBJECT (play->priv->playbin), "vis-plugin", NULL, NULL);
}
return TRUE;
}
/**
* gst_play_get_framerate:
* @play: a #GstPlay.
*
* Get the video framerate from @play.
*
* Returns: a #gdouble indicating video framerate in frame per second.
*/
gdouble
gst_play_get_framerate (GstPlay * play)
{
const GList *streaminfo = NULL;
const GstStructure *str = NULL;
gdouble value;
g_object_get (G_OBJECT (play->priv->playbin),
"stream-info", &streaminfo, NULL);
for (; streaminfo != NULL; streaminfo = streaminfo->next) {
GObject *info = streaminfo->data;
gint type;
GParamSpec *pspec;
GEnumValue *val;
g_object_get (info, "type", &type, NULL);
pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (info), "type");
val = g_enum_get_value (G_PARAM_SPEC_ENUM (pspec)->enum_class, type);
if (strstr (val->value_name, "VIDEO")) {
const GstCaps *caps = NULL;
GstPad *pad = NULL;
g_object_get (info, "object", &pad, NULL);
g_assert (GST_IS_PAD (pad));
pad = (GstPad *) GST_PAD_REALIZE (pad);
caps = GST_PAD_CAPS (pad);
str = gst_caps_get_structure (caps, 0);
break;
}
}
if (!str)
return 0.;
gst_structure_get_double (str, "framerate", &value);
return value;
}
/**
* 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.
*/
/*
* (Ronald) what is this?
*/
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 (GST_IS_PLAY (play), NULL);
g_return_val_if_fail (GST_IS_ELEMENT (element), NULL);
GST_DEBUG_OBJECT (play, "looking for sink element in %s",
GST_ELEMENT_NAME (element));
if (!GST_IS_BIN (element)) {
/* since its not a bin, we'll assume this
* element is a sink element */
GST_DEBUG_OBJECT (play, "not a bin, returning %s as sink element",
GST_ELEMENT_NAME (element));
return element;
}
/* FIXME, not MT safe */
elements = (GList *) GST_BIN (element)->children;
/* traverse all elements looking for one without src pad */
while (elements) {
element = GST_ELEMENT (elements->data);
GST_DEBUG_OBJECT (play, "looking at element %s",
GST_ELEMENT_NAME (element));
/* Recursivity :) */
if (GST_IS_BIN (element)) {
element = gst_play_get_sink_element (play, element, sink_type);
if (GST_IS_ELEMENT (element))
return element;
} else {
/* FIXME, not MT safe */
pads = element->pads;
has_src = FALSE;
has_correct_type = FALSE;
while (pads) {
/* check for src pad */
if (GST_PAD_DIRECTION (GST_PAD (pads->data)) == GST_PAD_SRC) {
GST_DEBUG_OBJECT (play, "element %s has a src pad",
GST_ELEMENT_NAME (element));
has_src = TRUE;
break;
} else {
/* If not a src pad checking caps */
GstPad *pad;
GstCaps *caps;
GstStructure *structure;
int i;
gboolean has_video_cap = FALSE;
gboolean has_audio_cap = FALSE;
pad = GST_PAD (pads->data);
caps = gst_pad_get_caps (pad);
/* loop over all caps members to find mime types */
for (i = 0; i < gst_caps_get_size (caps); ++i) {
structure = gst_caps_get_structure (caps, i);
GST_DEBUG_OBJECT (play,
"looking at caps %d pad %s:%s on element %s with mime %s", i,
GST_DEBUG_PAD_NAME (pad),
GST_ELEMENT_NAME (element), gst_structure_get_name (structure));
if (strcmp (gst_structure_get_name (structure),
"audio/x-raw-int") == 0) {
has_audio_cap = TRUE;
}
if (strcmp (gst_structure_get_name (structure),
"video/x-raw-yuv") == 0 ||
strcmp (gst_structure_get_name (structure),
"video/x-raw-rgb") == 0) {
has_video_cap = TRUE;
}
}
gst_caps_unref (caps);
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;
}
}
pads = g_list_next (pads);
}
if ((!has_src) && (has_correct_type)) {
GST_DEBUG_OBJECT (play, "found %s with src pad and correct type",
GST_ELEMENT_NAME (element));
return element;
}
}
elements = g_list_next (elements);
}
/* we didn't find a sink element */
return NULL;
}
/**
* gst_play_get_all_by_interface:
* @play: a #GstPlay.
* @interface: an interface.
*
* Returns all elements that are used by @play implementing the given interface.
*
* Returns: a #GList of #GstElement implementing the interface.
*
* Not MT safe.
*/
GList *
gst_play_get_all_by_interface (GstPlay * play, GType interface_type)
{
GstElement *videosink = NULL, *audiosink = NULL;
GList *res = NULL;
GstIterator *it = NULL;
g_object_get (G_OBJECT (play->priv->playbin),
"video-sink", &videosink, "audio-sink", &audiosink, NULL);
/* ehw... */
if (videosink && GST_IS_BIN (videosink)) {
it = gst_bin_iterate_all_by_interface (GST_BIN (videosink), interface_type);
}
if (!res && audiosink && GST_IS_BIN (audiosink)) {
it = gst_bin_iterate_all_by_interface (GST_BIN (audiosink), interface_type);
}
if (it != NULL) {
gpointer data;
while (gst_iterator_next (it, &data) == GST_ITERATOR_OK) {
res = g_list_prepend (res, data);
}
}
return res;
}
/**
* gst_play_new:
* @error: a pointer to a #GError, which will be filled in on error.
*
* Creates a new GstPlay object.
*
* Returns: a newly created #GstPlay, or NULL on error (the #GError
* will be set accordingly).
*/
GstPlay *
gst_play_new (GError ** error)
{
GstPlay *play = g_object_new (GST_TYPE_PLAY, NULL);
if (!play->priv->playbin) {
g_set_error (error, 0, 0, _("Failed to create playbin object"));
g_object_unref (G_OBJECT (play));
return NULL;
}
return play;
}
/* =========================================== */
/* */
/* Object typing & Creation */
/* */
/* =========================================== */
GType
gst_play_get_type (void)
{
static GType play_type = 0;
if (!play_type) {
static const GTypeInfo play_info = {
sizeof (GstPlayClass),
NULL,
NULL,
(GClassInitFunc) gst_play_class_init,
NULL,
NULL,
sizeof (GstPlay),
0,
(GInstanceInitFunc) gst_play_init,
NULL
};
play_type = g_type_register_static (GST_TYPE_PIPELINE, "GstPlay",
&play_info, 0);
}
return play_type;
}