gstreamer/ext/gio/gstgiobasesrc.c
Sebastian Dröge 675f5de659 ext/gio/gstgio.h: Add macro to check if a stream supports seeking.
Original commit message from CVS:
* ext/gio/gstgio.h:
Add macro to check if a stream supports seeking.
* ext/gio/Makefile.am:
* ext/gio/gstgiobasesink.c: (gst_gio_base_sink_base_init),
(gst_gio_base_sink_class_init), (gst_gio_base_sink_init),
(gst_gio_base_sink_finalize), (gst_gio_base_sink_start),
(gst_gio_base_sink_stop), (gst_gio_base_sink_unlock),
(gst_gio_base_sink_unlock_stop), (gst_gio_base_sink_event),
(gst_gio_base_sink_render), (gst_gio_base_sink_query),
(gst_gio_base_sink_set_stream):
* ext/gio/gstgiobasesink.h:
* ext/gio/gstgiobasesrc.c: (gst_gio_base_src_base_init),
(gst_gio_base_src_class_init), (gst_gio_base_src_init),
(gst_gio_base_src_finalize), (gst_gio_base_src_start),
(gst_gio_base_src_stop), (gst_gio_base_src_get_size),
(gst_gio_base_src_is_seekable), (gst_gio_base_src_unlock),
(gst_gio_base_src_unlock_stop), (gst_gio_base_src_check_get_range),
(gst_gio_base_src_create), (gst_gio_base_src_set_stream):
* ext/gio/gstgiobasesrc.h:
Refactor common GIO functions to GstGioBaseSink and GstGioBaseSrc
base classes that only require a GInputStream or GOutputStream to
work.
* ext/gio/gstgiosink.c: (gst_gio_sink_base_init),
(gst_gio_sink_class_init), (gst_gio_sink_init),
(gst_gio_sink_finalize), (gst_gio_sink_start):
* ext/gio/gstgiosink.h:
* ext/gio/gstgiosrc.c: (gst_gio_src_base_init),
(gst_gio_src_class_init), (gst_gio_src_init),
(gst_gio_src_finalize), (gst_gio_src_start):
* ext/gio/gstgiosrc.h:
Use the newly created base classes here.
* ext/gio/gstgio.c: (plugin_init):
* ext/gio/gstgiostreamsink.c: (gst_gio_stream_sink_base_init),
(gst_gio_stream_sink_class_init), (gst_gio_stream_sink_init),
(gst_gio_stream_sink_finalize), (gst_gio_stream_sink_set_property),
(gst_gio_stream_sink_get_property):
* ext/gio/gstgiostreamsink.h:
* ext/gio/gstgiostreamsrc.c: (gst_gio_stream_src_base_init),
(gst_gio_stream_src_class_init), (gst_gio_stream_src_init),
(gst_gio_stream_src_finalize), (gst_gio_stream_src_set_property),
(gst_gio_stream_src_get_property):
* ext/gio/gstgiostreamsrc.h:
Implement GstGioStreamSink and GstGioStreamSrc that have a property
to set the GInputStream/GOutputStream that should be used.
* tests/check/Makefile.am:
* tests/check/pipelines/.cvsignore:
* tests/check/pipelines/gio.c: (message_handler), (GST_START_TEST),
(gio_testsuite), (main):
Add unit test for giostreamsrc and giostreamsink.
2007-11-07 15:18:54 +00:00

329 lines
8.9 KiB
C

/* GStreamer
*
* Copyright (C) 2007 Rene Stadler <mail@renestadler.de>
* Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstgiobasesrc.h"
GST_DEBUG_CATEGORY_STATIC (gst_gio_base_src_debug);
#define GST_CAT_DEFAULT gst_gio_base_src_debug
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_BOILERPLATE (GstGioBaseSrc, gst_gio_base_src, GstBaseSrc,
GST_TYPE_BASE_SRC);
static void gst_gio_base_src_finalize (GObject * object);
static gboolean gst_gio_base_src_start (GstBaseSrc * base_src);
static gboolean gst_gio_base_src_stop (GstBaseSrc * base_src);
static gboolean gst_gio_base_src_get_size (GstBaseSrc * base_src,
guint64 * size);
static gboolean gst_gio_base_src_is_seekable (GstBaseSrc * base_src);
static gboolean gst_gio_base_src_unlock (GstBaseSrc * base_src);
static gboolean gst_gio_base_src_unlock_stop (GstBaseSrc * base_src);
static gboolean gst_gio_base_src_check_get_range (GstBaseSrc * base_src);
static GstFlowReturn gst_gio_base_src_create (GstBaseSrc * base_src,
guint64 offset, guint size, GstBuffer ** buf);
static void
gst_gio_base_src_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
GST_DEBUG_CATEGORY_INIT (gst_gio_base_src_debug, "gio_base_src", 0,
"GIO base source");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
}
static void
gst_gio_base_src_class_init (GstGioBaseSrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gobject_class->finalize = gst_gio_base_src_finalize;
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_gio_base_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_gio_base_src_stop);
gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_gio_base_src_get_size);
gstbasesrc_class->is_seekable =
GST_DEBUG_FUNCPTR (gst_gio_base_src_is_seekable);
gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_gio_base_src_unlock);
gstbasesrc_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_gio_base_src_unlock_stop);
gstbasesrc_class->check_get_range =
GST_DEBUG_FUNCPTR (gst_gio_base_src_check_get_range);
gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_gio_base_src_create);
}
static void
gst_gio_base_src_init (GstGioBaseSrc * src, GstGioBaseSrcClass * gclass)
{
src->cancel = g_cancellable_new ();
}
static void
gst_gio_base_src_finalize (GObject * object)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (object);
if (src->cancel) {
g_object_unref (src->cancel);
src->cancel = NULL;
}
if (src->stream) {
g_object_unref (src->stream);
src->stream = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}
static gboolean
gst_gio_base_src_start (GstBaseSrc * base_src)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
if (!G_IS_INPUT_STREAM (src->stream)) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
("No stream given yet"));
return FALSE;
}
src->position = 0;
GST_DEBUG_OBJECT (src, "started stream");
return TRUE;
}
static gboolean
gst_gio_base_src_stop (GstBaseSrc * base_src)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
gboolean success = TRUE;
GError *err = NULL;
if (src->stream != NULL) {
/* FIXME: In case that the call below would block, there is no one to
* trigger the cancellation! */
success = g_input_stream_close (src->stream, src->cancel, &err);
if (!success && !gst_gio_error (src, "g_input_stream_close", &err, NULL)) {
GST_ELEMENT_ERROR (src, RESOURCE, CLOSE, (NULL),
("g_input_stream_close failed: %s", err->message));
g_clear_error (&err);
}
g_object_unref (src->stream);
src->stream = NULL;
}
GST_DEBUG_OBJECT (src, "closed stream");
return success;
}
static gboolean
gst_gio_base_src_get_size (GstBaseSrc * base_src, guint64 * size)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
if (G_IS_FILE_INPUT_STREAM (src->stream)) {
GFileInfo *info;
GError *err = NULL;
info = g_file_input_stream_query_info (G_FILE_INPUT_STREAM (src->stream),
G_FILE_ATTRIBUTE_STD_SIZE, src->cancel, &err);
if (info != NULL) {
*size = g_file_info_get_size (info);
g_object_unref (info);
GST_DEBUG_OBJECT (src, "found size: %" G_GUINT64_FORMAT, *size);
return TRUE;
}
if (!gst_gio_error (src, "g_file_input_stream_query_info", &err, NULL)) {
if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED))
GST_DEBUG_OBJECT (src, "size information not available");
else
GST_WARNING_OBJECT (src, "size information retrieval failed: %s",
err->message);
g_clear_error (&err);
}
} else if (G_IS_MEMORY_INPUT_STREAM (src->stream)) {
gsize data_size;
data_size =
g_memory_input_stream_get_data_size (G_MEMORY_INPUT_STREAM (src->
stream));
if (data_size != -1) {
*size = data_size;
return TRUE;
}
}
return FALSE;
}
static gboolean
gst_gio_base_src_is_seekable (GstBaseSrc * base_src)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
gboolean seekable;
seekable = GST_GIO_STREAM_IS_SEEKABLE (src->stream);
GST_DEBUG_OBJECT (src, "can seek: %d", seekable);
return seekable;
}
static gboolean
gst_gio_base_src_unlock (GstBaseSrc * base_src)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
GST_LOG_OBJECT (src, "triggering cancellation");
g_cancellable_cancel (src->cancel);
return TRUE;
}
static gboolean
gst_gio_base_src_unlock_stop (GstBaseSrc * base_src)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
GST_LOG_OBJECT (src, "resetting cancellable");
g_cancellable_reset (src->cancel);
return TRUE;
}
static gboolean
gst_gio_base_src_check_get_range (GstBaseSrc * base_src)
{
/* FIXME: Implement dry-run variant using guesswork like gnomevfssrc? */
return GST_CALL_PARENT_WITH_DEFAULT (GST_BASE_SRC_CLASS,
check_get_range, (base_src), FALSE);
}
static GstFlowReturn
gst_gio_base_src_create (GstBaseSrc * base_src, guint64 offset, guint size,
GstBuffer ** buf_return)
{
GstGioBaseSrc *src = GST_GIO_BASE_SRC (base_src);
GstBuffer *buf;
gssize read;
gboolean success, eos;
GstFlowReturn ret = GST_FLOW_OK;
GError *err = NULL;
if (G_UNLIKELY (offset != src->position)) {
if (!GST_GIO_STREAM_IS_SEEKABLE (src->stream))
return GST_FLOW_NOT_SUPPORTED;
ret = gst_gio_seek (src, G_SEEKABLE (src->stream), offset, src->cancel);
if (ret == GST_FLOW_OK)
src->position = offset;
return ret;
}
buf = gst_buffer_new_and_alloc (size);
GST_LOG_OBJECT (src, "reading %u bytes from offset %" G_GUINT64_FORMAT,
size, offset);
read =
g_input_stream_read (G_INPUT_STREAM (src->stream), GST_BUFFER_DATA (buf),
size, src->cancel, &err);
success = (read >= 0);
eos = (size > 0 && read == 0);
if (!success && !gst_gio_error (src, "g_input_stream_read", &err, &ret)) {
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
("Could not read from stream: %s", err->message));
g_clear_error (&err);
}
if (success && !eos) {
src->position += read;
GST_BUFFER_OFFSET (buf) = offset;
GST_BUFFER_SIZE (buf) = read;
*buf_return = buf;
} else {
/* !success || eos */
gst_buffer_unref (buf);
}
if (eos)
ret = GST_FLOW_UNEXPECTED;
return ret;
}
void
gst_gio_base_src_set_stream (GstGioBaseSrc * src, GInputStream * stream)
{
g_return_if_fail (G_IS_INPUT_STREAM (stream));
g_return_if_fail ((GST_STATE (src) != GST_STATE_PLAYING &&
GST_STATE (src) != GST_STATE_PAUSED));
if (src->stream) {
gboolean success;
GError *err = NULL;
success = g_input_stream_close (src->stream, src->cancel, &err);
if (!success && !gst_gio_error (src, "g_input_stream_close", &err, NULL)) {
GST_WARNING_OBJECT (src, "g_input_stream_close failed: %s", err->message);
g_clear_error (&err);
}
g_object_unref (src->stream);
src->stream = NULL;
}
src->stream = stream;
}