+++ /dev/null
-appsrc_ex
-appsrc-ra
-appsrc-seekable
-appsrc-stream
-appsrc-stream2
-appsink-src
+++ /dev/null
-
-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
-
+++ /dev/null
-#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;
-}
+++ /dev/null
-/* 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;
-}
+++ /dev/null
-/* 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;
-}
+++ /dev/null
-/* 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;
-}
+++ /dev/null
-/* 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;
-}
+++ /dev/null
-
-
-#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);
-}
projects / platform / upstream / gstreamer.git / commitdiff