mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-28 19:20:35 +00:00
Code Issues 1 Projects Releases Wiki Activity

Remove tests/examples/app as it was moved to -base a long time ago

Browse source
This commit is contained in:
Sebastian Dröge 2009-02-24 16:36:28 +01:00
parent f0ae68d944
commit 9d4c7e68ab
8 changed files with 0 additions and 1239 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
tests/examples/app/.gitignore vendored
View file

@ -1,6 +0,0 @@
appsrc_ex
appsrc-ra
appsrc-seekable
appsrc-stream
appsrc-stream2
appsink-src

32
tests/examples/app/Makefile.am
View file

@ -1,32 +0,0 @@
noinst_PROGRAMS = appsrc_ex appsrc-stream appsrc-stream2 appsrc-ra \
appsrc-seekable appsink-src
appsrc_ex_SOURCES = appsrc_ex.c
appsrc_ex_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsrc_ex_LDFLAGS = \
$(GST_LIBS) \
$(top_builddir)/gst-libs/gst/app/libgstapp-@GST_MAJORMINOR@.la
appsrc_stream_SOURCES = appsrc-stream.c
appsrc_stream_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsrc_stream_LDFLAGS = $(GST_LIBS)
appsrc_stream2_SOURCES = appsrc-stream2.c
appsrc_stream2_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsrc_stream2_LDFLAGS = $(GST_LIBS)
appsrc_ra_SOURCES = appsrc-ra.c
appsrc_ra_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsrc_ra_LDFLAGS = $(GST_LIBS)
appsrc_seekable_SOURCES = appsrc-seekable.c
appsrc_seekable_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsrc_seekable_LDFLAGS = $(GST_LIBS)
appsink_src_SOURCES = appsink-src.c
appsink_src_CFLAGS = $(GST_CFLAGS) $(GCONF_CFLAGS)
appsink_src_LDFLAGS = \
$(GST_LIBS) \
$(top_builddir)/gst-libs/gst/app/libgstapp-@GST_MAJORMINOR@.la

192
tests/examples/app/appsink-src.c
View file

@ -1,192 +0,0 @@
#include <gst/gst.h>
#include <string.h>
#include <gst/app/gstappsrc.h>
#include <gst/app/gstappsink.h>
#include <gst/app/gstappbuffer.h>
/* these are the caps we are going to pass through the appsink and appsrc */
const gchar *audio_caps =
"audio/x-raw-int,channels=1,rate=8000,signed=(boolean)true,width=16,depth=16,endianness=1234";
typedef struct
{
GMainLoop *loop;
GstElement *source;
GstElement *sink;
} ProgramData;
/* called when the appsink notifies us that there is a new buffer ready for
* processing */
static void
on_new_buffer_from_source (GstElement * elt, ProgramData * data)
{
guint size;
gpointer raw_buffer;
GstBuffer *app_buffer, *buffer;
GstElement *source;
/* get the buffer from appsink */
buffer = gst_app_sink_pull_buffer (GST_APP_SINK (elt));
/* turn it into an app buffer, it's not really needed, we could simply push
* the retrieved buffer from appsink into appsrc just fine. */
size = GST_BUFFER_SIZE (buffer);
g_print ("Pushing a buffer of size %d\n", size);
raw_buffer = g_malloc0 (size);
memcpy (raw_buffer, GST_BUFFER_DATA (buffer), size);
app_buffer = gst_app_buffer_new (raw_buffer, size, g_free, raw_buffer);
/* newer basesrc will set caps for use automatically but it does not really
* hurt to set it on the buffer again */
gst_buffer_set_caps (app_buffer, GST_BUFFER_CAPS (buffer));
/* we don't need the appsink buffer anymore */
gst_buffer_unref (buffer);
/* get source an push new buffer */
source = gst_bin_get_by_name (GST_BIN (data->sink), "testsource");
gst_app_src_push_buffer (GST_APP_SRC (source), app_buffer);
}
/* called when we get a GstMessage from the source pipeline when we get EOS, we
* notify the appsrc of it. */
static gboolean
on_source_message (GstBus * bus, GstMessage * message, ProgramData * data)
{
GstElement *source;
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_EOS:
g_print ("The source got dry\n");
source = gst_bin_get_by_name (GST_BIN (data->sink), "testsource");
gst_app_src_end_of_stream (GST_APP_SRC (source));
break;
case GST_MESSAGE_ERROR:
g_print ("Received error\n");
g_main_loop_quit (data->loop);
break;
default:
break;
}
return TRUE;
}
/* called when we get a GstMessage from the sink pipeline when we get EOS, we
* exit the mainloop and this testapp. */
static gboolean
on_sink_message (GstBus * bus, GstMessage * message, ProgramData * data)
{
/* nil */
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_EOS:
g_print ("Finished playback\n");
g_main_loop_quit (data->loop);
break;
case GST_MESSAGE_ERROR:
g_print ("Received error\n");
g_main_loop_quit (data->loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
gchar *filename = NULL;
ProgramData *data = NULL;
gchar *string = NULL;
GstBus *bus = NULL;
GstElement *testsink = NULL;
GstElement *testsource = NULL;
gst_init (&argc, &argv);
if (argc == 2)
filename = g_strdup (argv[1]);
else
filename = g_strdup ("/usr/share/sounds/ekiga/ring.wav");
data = g_new0 (ProgramData, 1);
data->loop = g_main_loop_new (NULL, FALSE);
/* setting up source pipeline, we read from a file and convert to our desired
* caps. */
string =
g_strdup_printf
("filesrc location=\"%s\" ! wavparse ! audioconvert ! audioresample ! appsink caps=\"%s\" name=testsink",
filename, audio_caps);
g_free (filename);
data->source = gst_parse_launch (string, NULL);
g_free (string);
if (data->source == NULL) {
g_print ("Bad source\n");
return -1;
}
/* to be notified of messages from this pipeline, mostly EOS */
bus = gst_element_get_bus (data->source);
gst_bus_add_watch (bus, (GstBusFunc) on_source_message, data);
gst_object_unref (bus);
/* we use appsink in push mode, it sends us a signal when data is available
* and we pull out the data in the signal callback. We want the appsink to
* push as fast as it can, hence the sync=false */
testsink = gst_bin_get_by_name (GST_BIN (data->source), "testsink");
g_object_set (G_OBJECT (testsink), "emit-signals", TRUE, "sync", FALSE, NULL);
g_signal_connect (testsink, "new-buffer",
G_CALLBACK (on_new_buffer_from_source), data);
gst_object_unref (testsink);
/* setting up sink pipeline, we push audio data into this pipeline that will
* then play it back using the default audio sink. We have no blocking
* behaviour on the src which means that we will push the entire file into
* memory. */
string =
g_strdup_printf ("appsrc name=testsource caps=\"%s\" ! autoaudiosink",
audio_caps);
data->sink = gst_parse_launch (string, NULL);
g_free (string);
if (data->sink == NULL) {
g_print ("Bad sink\n");
return -1;
}
testsource = gst_bin_get_by_name (GST_BIN (data->sink), "testsource");
/* configure for time-based format */
g_object_set (testsource, "format", GST_FORMAT_TIME, NULL);
/* uncomment the next line to block when appsrc has buffered enough */
/* g_object_set (testsource, "block", TRUE, NULL); */
gst_object_unref (testsource);
bus = gst_element_get_bus (data->sink);
gst_bus_add_watch (bus, (GstBusFunc) on_sink_message, data);
gst_object_unref (bus);
/* launching things */
gst_element_set_state (data->sink, GST_STATE_PLAYING);
gst_element_set_state (data->source, GST_STATE_PLAYING);
/* let's run !, this loop will quit when the sink pipeline goes EOS or when an
* error occurs in the source or sink pipelines. */
g_print ("Let's run!\n");
g_main_loop_run (data->loop);
g_print ("Going out\n");
gst_element_set_state (data->source, GST_STATE_NULL);
gst_element_set_state (data->sink, GST_STATE_NULL);
gst_object_unref (data->source);
gst_object_unref (data->sink);
g_main_loop_unref (data->loop);
g_free (data);
return 0;
}

223
tests/examples/app/appsrc-ra.c
View file

@ -1,223 +0,0 @@
/* GStreamer
*
* appsrc-ra.c: example for using appsrc in random-access mode.
*
* Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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 <gst/gst.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
GST_DEBUG_CATEGORY (appsrc_playbin_debug);
#define GST_CAT_DEFAULT appsrc_playbin_debug
/*
* an example application of using appsrc in random-access mode. When the
* appsrc requests data with the need-data signal, we retrieve a buffer of the
* requested size and push it to appsrc.
*
* This is a good example how one would deal with a local file resource.
*
* Appsrc in random-access mode needs seeking support and we must thus connect
* to the seek signal to perform any seeks when requested.
*
* In random-access mode we must set the size of the source material.
*/
typedef struct _App App;
struct _App
{
GstElement *playbin;
GstElement *appsrc;
GMainLoop *loop;
GMappedFile *file;
guint8 *data;
gsize length;
guint64 offset;
};
App s_app;
/* This method is called by the need-data signal callback, we feed data into the
* appsrc with the requested size.
*/
static void
feed_data (GstElement * appsrc, guint size, App * app)
{
GstBuffer *buffer;
GstFlowReturn ret;
buffer = gst_buffer_new ();
if (app->offset >= app->length) {
/* we are EOS, send end-of-stream */
g_signal_emit_by_name (app->appsrc, "end-of-stream", &ret);
return;
}
/* read the amount of data, we are allowed to return less if we are EOS */
if (app->offset + size > app->length)
size = app->length - app->offset;
GST_BUFFER_DATA (buffer) = app->data + app->offset;
GST_BUFFER_SIZE (buffer) = size;
/* we need to set an offset for random access */
GST_BUFFER_OFFSET (buffer) = app->offset;
GST_BUFFER_OFFSET_END (buffer) = app->offset + size;
GST_DEBUG ("feed buffer %p, offset %" G_GUINT64_FORMAT "-%u", buffer,
app->offset, size);
g_signal_emit_by_name (app->appsrc, "push-buffer", buffer, &ret);
gst_buffer_unref (buffer);
app->offset += size;
return;
}
/* called when appsrc wants us to return data from a new position with the next
* call to push-buffer. */
static gboolean
seek_data (GstElement * appsrc, guint64 position, App * app)
{
GST_DEBUG ("seek to offset %" G_GUINT64_FORMAT, position);
app->offset = position;
return TRUE;
}
/* this callback is called when playbin2 has constructed a source object to read
* from. Since we provided the appsrc:// uri to playbin2, this will be the
* appsrc that we must handle. We set up some signals to push data into appsrc
* and one to perform a seek. */
static void
found_source (GObject * object, GObject * orig, GParamSpec * pspec, App * app)
{
/* get a handle to the appsrc */
g_object_get (orig, pspec->name, &app->appsrc, NULL);
GST_DEBUG ("got appsrc %p", app->appsrc);
/* we can set the length in appsrc. This allows some elements to estimate the
* total duration of the stream. It's a good idea to set the property when you
* can but it's not required. */
g_object_set (app->appsrc, "size", app->length, NULL);
g_object_set (app->appsrc, "stream-type", 2, NULL);
/* configure the appsrc, we will push a buffer to appsrc when it needs more
* data */
g_signal_connect (app->appsrc, "need-data", G_CALLBACK (feed_data), app);
g_signal_connect (app->appsrc, "seek-data", G_CALLBACK (seek_data), app);
}
static gboolean
bus_message (GstBus * bus, GstMessage * message, App * app)
{
GST_DEBUG ("got message %s",
gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_error ("received error");
g_main_loop_quit (app->loop);
break;
case GST_MESSAGE_EOS:
g_main_loop_quit (app->loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
App *app = &s_app;
GError *error = NULL;
GstBus *bus;
gst_init (&argc, &argv);
GST_DEBUG_CATEGORY_INIT (appsrc_playbin_debug, "appsrc-playbin", 0,
"appsrc playbin example");
if (argc < 2) {
g_print ("usage: %s <filename>\n", argv[0]);
return -1;
}
/* try to open the file as an mmapped file */
app->file = g_mapped_file_new (argv[1], FALSE, &error);
if (error) {
g_print ("failed to open file: %s\n", error->message);
g_error_free (error);
return -2;
}
/* get some vitals, this will be used to read data from the mmapped file and
* feed it to appsrc. */
app->length = g_mapped_file_get_length (app->file);
app->data = (guint8 *) g_mapped_file_get_contents (app->file);
app->offset = 0;
/* create a mainloop to get messages */
app->loop = g_main_loop_new (NULL, TRUE);
app->playbin = gst_element_factory_make ("playbin2", NULL);
g_assert (app->playbin);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->playbin));
/* add watch for messages */
gst_bus_add_watch (bus, (GstBusFunc) bus_message, app);
/* set to read from appsrc */
g_object_set (app->playbin, "uri", "appsrc://", NULL);
/* get notification when the source is created so that we get a handle to it
* and can configure it */
g_signal_connect (app->playbin, "deep-notify::source",
(GCallback) found_source, app);
/* go to playing and wait in a mainloop. */
gst_element_set_state (app->playbin, GST_STATE_PLAYING);
/* this mainloop is stopped when we receive an error or EOS */
g_main_loop_run (app->loop);
GST_DEBUG ("stopping");
gst_element_set_state (app->playbin, GST_STATE_NULL);
/* free the file */
g_mapped_file_free (app->file);
gst_object_unref (bus);
g_main_loop_unref (app->loop);
return 0;
}

229
tests/examples/app/appsrc-seekable.c
View file

@ -1,229 +0,0 @@
/* GStreamer
*
* appsrc-seekable.c: example for using appsrc in seekable mode.
*
* Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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 <gst/gst.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
GST_DEBUG_CATEGORY (appsrc_playbin_debug);
#define GST_CAT_DEFAULT appsrc_playbin_debug
/*
* an example application of using appsrc in seekable mode. When the
* appsrc requests data with the need-data signal, we retrieve a buffer and
* push it to appsrc. We can also use the method as demonstrated in
* appsrc-stream.c, ie. pushing buffers when we can.
*
* This is a good example how one would deal with a remote http server that
* supports range requests.
*
* Appsrc in seekable mode needs seeking support and we must thus connect
* to the seek signal to perform any seeks when requested.
*
* In seekable mode we should set the size of the source material.
*/
typedef struct _App App;
struct _App
{
GstElement *playbin;
GstElement *appsrc;
GMainLoop *loop;
GMappedFile *file;
guint8 *data;
gsize length;
guint64 offset;
};
App s_app;
#define CHUNK_SIZE 4096
/* This method is called by the need-data signal callback, we feed data into the
* appsrc with an arbitrary size.
*/
static void
feed_data (GstElement * appsrc, guint size, App * app)
{
GstBuffer *buffer;
guint len;
GstFlowReturn ret;
buffer = gst_buffer_new ();
if (app->offset >= app->length) {
/* we are EOS, send end-of-stream */
g_signal_emit_by_name (app->appsrc, "end-of-stream", &ret);
return;
}
/* read any amount of data, we are allowed to return less if we are EOS */
len = CHUNK_SIZE;
if (app->offset + len > app->length)
len = app->length - app->offset;
GST_BUFFER_DATA (buffer) = app->data + app->offset;
GST_BUFFER_SIZE (buffer) = len;
GST_DEBUG ("feed buffer %p, offset %" G_GUINT64_FORMAT "-%u", buffer,
app->offset, len);
g_signal_emit_by_name (app->appsrc, "push-buffer", buffer, &ret);
gst_buffer_unref (buffer);
app->offset += len;
return;
}
/* called when appsrc wants us to return data from a new position with the next
* call to push-buffer. */
static gboolean
seek_data (GstElement * appsrc, guint64 position, App * app)
{
GST_DEBUG ("seek to offset %" G_GUINT64_FORMAT, position);
app->offset = position;
return TRUE;
}
/* this callback is called when playbin2 has constructed a source object to read
* from. Since we provided the appsrc:// uri to playbin2, this will be the
* appsrc that we must handle. We set up some signals to push data into appsrc
* and one to perform a seek. */
static void
found_source (GObject * object, GObject * orig, GParamSpec * pspec, App * app)
{
/* get a handle to the appsrc */
g_object_get (orig, pspec->name, &app->appsrc, NULL);
GST_DEBUG ("got appsrc %p", app->appsrc);
/* we can set the length in appsrc. This allows some elements to estimate the
* total duration of the stream. It's a good idea to set the property when you
* can but it's not required. */
g_object_set (app->appsrc, "size", app->length, NULL);
/* we are seekable in push mode, this means that the element usually pushes
* out buffers of an undefined size and that seeks happen only occasionally
* and only by request of the user. */
g_object_set (app->appsrc, "stream-type", 1, NULL);
/* configure the appsrc, we will push a buffer to appsrc when it needs more
* data */
g_signal_connect (app->appsrc, "need-data", G_CALLBACK (feed_data), app);
g_signal_connect (app->appsrc, "seek-data", G_CALLBACK (seek_data), app);
}
static gboolean
bus_message (GstBus * bus, GstMessage * message, App * app)
{
GST_DEBUG ("got message %s",
gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_error ("received error");
g_main_loop_quit (app->loop);
break;
case GST_MESSAGE_EOS:
g_main_loop_quit (app->loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
App *app = &s_app;
GError *error = NULL;
GstBus *bus;
gst_init (&argc, &argv);
GST_DEBUG_CATEGORY_INIT (appsrc_playbin_debug, "appsrc-playbin", 0,
"appsrc playbin example");
if (argc < 2) {
g_print ("usage: %s <filename>\n", argv[0]);
return -1;
}
/* try to open the file as an mmapped file */
app->file = g_mapped_file_new (argv[1], FALSE, &error);
if (error) {
g_print ("failed to open file: %s\n", error->message);
g_error_free (error);
return -2;
}
/* get some vitals, this will be used to read data from the mmapped file and
* feed it to appsrc. */
app->length = g_mapped_file_get_length (app->file);
app->data = (guint8 *) g_mapped_file_get_contents (app->file);
app->offset = 0;
/* create a mainloop to get messages */
app->loop = g_main_loop_new (NULL, TRUE);
app->playbin = gst_element_factory_make ("playbin2", NULL);
g_assert (app->playbin);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->playbin));
/* add watch for messages */
gst_bus_add_watch (bus, (GstBusFunc) bus_message, app);
/* set to read from appsrc */
g_object_set (app->playbin, "uri", "appsrc://", NULL);
/* get notification when the source is created so that we get a handle to it
* and can configure it */
g_signal_connect (app->playbin, "deep-notify::source",
(GCallback) found_source, app);
/* go to playing and wait in a mainloop. */
gst_element_set_state (app->playbin, GST_STATE_PLAYING);
/* this mainloop is stopped when we receive an error or EOS */
g_main_loop_run (app->loop);
GST_DEBUG ("stopping");
gst_element_set_state (app->playbin, GST_STATE_NULL);
/* free the file */
g_mapped_file_free (app->file);
gst_object_unref (bus);
g_main_loop_unref (app->loop);
return 0;
}

249
tests/examples/app/appsrc-stream.c
View file

@ -1,249 +0,0 @@
/* GStreamer
*
* appsrc-stream.c: example for using appsrc in streaming mode.
*
* Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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 <gst/gst.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
GST_DEBUG_CATEGORY (appsrc_playbin_debug);
#define GST_CAT_DEFAULT appsrc_playbin_debug
/*
* an example application of using appsrc in streaming push mode. We simply push
* buffers into appsrc. The size of the buffers we push can be any size we
* choose.
*
* This example is very close to how one would deal with a streaming webserver
* that does not support range requests or does not report the total file size.
*
* Some optimisations are done so that we don't push too much data. We connect
* to the need-data and enough-data signals to start/stop sending buffers.
*
* Appsrc in streaming mode (the default) does not support seeking so we don't
* have to handle any seek callbacks.
*
* Some formats are able to estimate the duration of the media file based on the
* file length (mp3, mpeg,..), others report an unknown length (ogg,..).
*/
typedef struct _App App;
struct _App
{
GstElement *playbin;
GstElement *appsrc;
GMainLoop *loop;
guint sourceid;
GMappedFile *file;
guint8 *data;
gsize length;
guint64 offset;
};
App s_app;
#define CHUNK_SIZE 4096
/* This method is called by the idle GSource in the mainloop. We feed CHUNK_SIZE
* bytes into appsrc.
* The ide handler is added to the mainloop when appsrc requests us to start
* sending data (need-data signal) and is removed when appsrc has enough data
* (enough-data signal).
*/
static gboolean
read_data (App * app)
{
GstBuffer *buffer;
guint len;
GstFlowReturn ret;
buffer = gst_buffer_new ();
if (app->offset >= app->length) {
/* we are EOS, send end-of-stream and remove the source */
g_signal_emit_by_name (app->appsrc, "end-of-stream", &ret);
return FALSE;
}
/* read the next chunk */
len = CHUNK_SIZE;
if (app->offset + len > app->length)
len = app->length - app->offset;
GST_BUFFER_DATA (buffer) = app->data + app->offset;
GST_BUFFER_SIZE (buffer) = len;
GST_DEBUG ("feed buffer %p, offset %" G_GUINT64_FORMAT "-%u", buffer,
app->offset, len);
g_signal_emit_by_name (app->appsrc, "push-buffer", buffer, &ret);
gst_buffer_unref (buffer);
if (ret != GST_FLOW_OK) {
/* some error, stop sending data */
return FALSE;
}
app->offset += len;
return TRUE;
}
/* This signal callback is called when appsrc needs data, we add an idle handler
* to the mainloop to start pushing data into the appsrc */
static void
start_feed (GstElement * playbin, guint size, App * app)
{
if (app->sourceid == 0) {
GST_DEBUG ("start feeding");
app->sourceid = g_idle_add ((GSourceFunc) read_data, app);
}
}
/* This callback is called when appsrc has enough data and we can stop sending.
* We remove the idle handler from the mainloop */
static void
stop_feed (GstElement * playbin, App * app)
{
if (app->sourceid != 0) {
GST_DEBUG ("stop feeding");
g_source_remove (app->sourceid);
app->sourceid = 0;
}
}
/* this callback is called when playbin2 has constructed a source object to read
* from. Since we provided the appsrc:// uri to playbin2, this will be the
* appsrc that we must handle. We set up some signals to start and stop pushing
* data into appsrc */
static void
found_source (GObject * object, GObject * orig, GParamSpec * pspec, App * app)
{
/* get a handle to the appsrc */
g_object_get (orig, pspec->name, &app->appsrc, NULL);
GST_DEBUG ("got appsrc %p", app->appsrc);
/* we can set the length in appsrc. This allows some elements to estimate the
* total duration of the stream. It's a good idea to set the property when you
* can but it's not required. */
g_object_set (app->appsrc, "size", app->length, NULL);
/* configure the appsrc, we will push data into the appsrc from the
* mainloop. */
g_signal_connect (app->appsrc, "need-data", G_CALLBACK (start_feed), app);
g_signal_connect (app->appsrc, "enough-data", G_CALLBACK (stop_feed), app);
}
static gboolean
bus_message (GstBus * bus, GstMessage * message, App * app)
{
GST_DEBUG ("got message %s",
gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_error ("received error");
g_main_loop_quit (app->loop);
break;
case GST_MESSAGE_EOS:
g_main_loop_quit (app->loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
App *app = &s_app;
GError *error = NULL;
GstBus *bus;
gst_init (&argc, &argv);
GST_DEBUG_CATEGORY_INIT (appsrc_playbin_debug, "appsrc-playbin", 0,
"appsrc playbin example");
if (argc < 2) {
g_print ("usage: %s <filename>\n", argv[0]);
return -1;
}
/* try to open the file as an mmapped file */
app->file = g_mapped_file_new (argv[1], FALSE, &error);
if (error) {
g_print ("failed to open file: %s\n", error->message);
g_error_free (error);
return -2;
}
/* get some vitals, this will be used to read data from the mmapped file and
* feed it to appsrc. */
app->length = g_mapped_file_get_length (app->file);
app->data = (guint8 *) g_mapped_file_get_contents (app->file);
app->offset = 0;
/* create a mainloop to get messages and to handle the idle handler that will
* feed data to appsrc. */
app->loop = g_main_loop_new (NULL, TRUE);
app->playbin = gst_element_factory_make ("playbin2", NULL);
g_assert (app->playbin);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->playbin));
/* add watch for messages */
gst_bus_add_watch (bus, (GstBusFunc) bus_message, app);
/* set to read from appsrc */
g_object_set (app->playbin, "uri", "appsrc://", NULL);
/* get notification when the source is created so that we get a handle to it
* and can configure it */
g_signal_connect (app->playbin, "deep-notify::source",
(GCallback) found_source, app);
/* go to playing and wait in a mainloop. */
gst_element_set_state (app->playbin, GST_STATE_PLAYING);
/* this mainloop is stopped when we receive an error or EOS */
g_main_loop_run (app->loop);
GST_DEBUG ("stopping");
gst_element_set_state (app->playbin, GST_STATE_NULL);
/* free the file */
g_mapped_file_free (app->file);
gst_object_unref (bus);
g_main_loop_unref (app->loop);
return 0;
}

219
tests/examples/app/appsrc-stream2.c
View file

@ -1,219 +0,0 @@
/* GStreamer
*
* appsrc-stream2.c: example for using appsrc in streaming mode.
*
* Copyright (C) 2008 Wim Taymans <wim.taymans@gmail.com>
*
* 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 <gst/gst.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
GST_DEBUG_CATEGORY (appsrc_playbin_debug);
#define GST_CAT_DEFAULT appsrc_playbin_debug
/*
* an example application of using appsrc in streaming pull mode. When the
* appsrc request data with the need-data signal, we retrieve a buffer of an
* arbitrary size and push it to appsrc.
*
* This example keeps the internal buffer queue of appsrc to a minimal size,
* only feeding data to appsrc when needed.
*
* This is a good example how one would deal with a live resource, such as a udp
* socket where one would feed the most recently acquired buffer to appsrc.
*
* Usually one would timestamp the buffers with the running_time of the
* pipeline or configure the appsrc to do timestamping by setting the
* do-timestamp property to TRUE.
*
* Appsrc in streaming mode (the default) does not support seeking so we don't
* have to handle any seek callbacks.
*
* Some formats are able to estimate the duration of the media file based on the
* file length (mp3, mpeg,..), others report an unknown length (ogg,..).
*/
typedef struct _App App;
struct _App
{
GstElement *playbin;
GstElement *appsrc;
GMainLoop *loop;
GMappedFile *file;
guint8 *data;
gsize length;
guint64 offset;
};
App s_app;
#define CHUNK_SIZE 4096
/* This method is called by the need-data signal callback, we feed data into the
* appsrc.
*/
static void
feed_data (GstElement * appsrc, guint size, App * app)
{
GstBuffer *buffer;
guint len;
GstFlowReturn ret;
buffer = gst_buffer_new ();
if (app->offset >= app->length) {
/* we are EOS, send end-of-stream */
g_signal_emit_by_name (app->appsrc, "end-of-stream", &ret);
return;
}
/* read the next chunk */
len = CHUNK_SIZE;
if (app->offset + len > app->length)
len = app->length - app->offset;
GST_BUFFER_DATA (buffer) = app->data + app->offset;
GST_BUFFER_SIZE (buffer) = len;
GST_DEBUG ("feed buffer %p, offset %" G_GUINT64_FORMAT "-%u", buffer,
app->offset, len);
g_signal_emit_by_name (app->appsrc, "push-buffer", buffer, &ret);
gst_buffer_unref (buffer);
app->offset += len;
return;
}
/* this callback is called when playbin2 has constructed a source object to read
* from. Since we provided the appsrc:// uri to playbin2, this will be the
* appsrc that we must handle. We set up a signals to push data into appsrc. */
static void
found_source (GObject * object, GObject * orig, GParamSpec * pspec, App * app)
{
/* get a handle to the appsrc */
g_object_get (orig, pspec->name, &app->appsrc, NULL);
GST_DEBUG ("got appsrc %p", app->appsrc);
/* we can set the length in appsrc. This allows some elements to estimate the
* total duration of the stream. It's a good idea to set the property when you
* can but it's not required. */
g_object_set (app->appsrc, "size", app->length, NULL);
/* configure the appsrc, we will push a buffer to appsrc when it needs more
* data */
g_signal_connect (app->appsrc, "need-data", G_CALLBACK (feed_data), app);
}
static gboolean
bus_message (GstBus * bus, GstMessage * message, App * app)
{
GST_DEBUG ("got message %s",
gst_message_type_get_name (GST_MESSAGE_TYPE (message)));
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_error ("received error");
g_main_loop_quit (app->loop);
break;
case GST_MESSAGE_EOS:
g_main_loop_quit (app->loop);
break;
default:
break;
}
return TRUE;
}
int
main (int argc, char *argv[])
{
App *app = &s_app;
GError *error = NULL;
GstBus *bus;
gst_init (&argc, &argv);
GST_DEBUG_CATEGORY_INIT (appsrc_playbin_debug, "appsrc-playbin", 0,
"appsrc playbin example");
if (argc < 2) {
g_print ("usage: %s <filename>\n", argv[0]);
return -1;
}
/* try to open the file as an mmapped file */
app->file = g_mapped_file_new (argv[1], FALSE, &error);
if (error) {
g_print ("failed to open file: %s\n", error->message);
g_error_free (error);
return -2;
}
/* get some vitals, this will be used to read data from the mmapped file and
* feed it to appsrc. */
app->length = g_mapped_file_get_length (app->file);
app->data = (guint8 *) g_mapped_file_get_contents (app->file);
app->offset = 0;
/* create a mainloop to get messages */
app->loop = g_main_loop_new (NULL, TRUE);
app->playbin = gst_element_factory_make ("playbin2", NULL);
g_assert (app->playbin);
bus = gst_pipeline_get_bus (GST_PIPELINE (app->playbin));
/* add watch for messages */
gst_bus_add_watch (bus, (GstBusFunc) bus_message, app);
/* set to read from appsrc */
g_object_set (app->playbin, "uri", "appsrc://", NULL);
/* get notification when the source is created so that we get a handle to it
* and can configure it */
g_signal_connect (app->playbin, "deep-notify::source",
(GCallback) found_source, app);
/* go to playing and wait in a mainloop. */
gst_element_set_state (app->playbin, GST_STATE_PLAYING);
/* this mainloop is stopped when we receive an error or EOS */
g_main_loop_run (app->loop);
GST_DEBUG ("stopping");
gst_element_set_state (app->playbin, GST_STATE_NULL);
/* free the file */
g_mapped_file_free (app->file);
gst_object_unref (bus);
g_main_loop_unref (app->loop);
return 0;
}

89
tests/examples/app/appsrc_ex.c
View file

@ -1,89 +0,0 @@
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/app/gstappsrc.h>
#include <gst/app/gstappbuffer.h>
#include <gst/app/gstappsink.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct _App App;
struct _App
{
GstElement *pipe;
GstElement *src;
GstElement *id;
GstElement *sink;
};
App s_app;
static void dont_eat_my_chicken_wings (void *priv);
int
main (int argc, char *argv[])
{
App *app = &s_app;
int i;
gst_init (&argc, &argv);
app->pipe = gst_pipeline_new (NULL);
g_assert (app->pipe);
app->src = gst_element_factory_make ("appsrc", NULL);
g_assert (app->src);
gst_bin_add (GST_BIN (app->pipe), app->src);
app->id = gst_element_factory_make ("identity", NULL);
g_assert (app->id);
gst_bin_add (GST_BIN (app->pipe), app->id);
app->sink = gst_element_factory_make ("appsink", NULL);
g_assert (app->sink);
gst_bin_add (GST_BIN (app->pipe), app->sink);
gst_element_link (app->src, app->id);
gst_element_link (app->id, app->sink);
gst_element_set_state (app->pipe, GST_STATE_PLAYING);
for (i = 0; i < 10; i++) {
GstBuffer *buf;
void *data;
data = malloc (100);
memset (data, i, 100);
buf = gst_app_buffer_new (data, 100, dont_eat_my_chicken_wings, data);
printf ("%d: creating buffer for pointer %p, %p\n", i, data, buf);
gst_app_src_push_buffer (GST_APP_SRC (app->src), buf);
}
gst_app_src_end_of_stream (GST_APP_SRC (app->src));
while (!gst_app_sink_is_eos (GST_APP_SINK (app->sink))) {
GstBuffer *buf;
buf = gst_app_sink_pull_buffer (GST_APP_SINK (app->sink));
printf ("retrieved buffer %p\n", buf);
gst_buffer_unref (buf);
}
gst_element_set_state (app->pipe, GST_STATE_NULL);
return 0;
}
static void
dont_eat_my_chicken_wings (void *priv)
{
printf ("freeing buffer for pointer %p\n", priv);
free (priv);
}