--- a/gst_plugins_base/ext/gio/gstgiobasesrc.c Wed Mar 31 22:03:18 2010 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,383 +0,0 @@
-/* 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;
- GError *err = NULL;
-
- if (G_IS_INPUT_STREAM (src->stream)) {
- GST_DEBUG_OBJECT (src, "closing stream");
-
- /* FIXME: can block but unfortunately we can't use async operations
- * here because they require a running main loop */
- success = g_input_stream_close (src->stream, src->cancel, &err);
-
- if (!success && !gst_gio_error (src, "g_input_stream_close", &err, NULL)) {
- GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL),
- ("g_input_stream_close failed: %s", err->message));
- g_clear_error (&err);
- } else if (!success) {
- GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL),
- ("g_input_stream_close failed"));
- } else {
- GST_DEBUG_OBJECT (src, "g_input_stream_close succeeded");
- }
-
- g_object_unref (src->stream);
- src->stream = NULL;
- }
-
- return TRUE;
-}
-
-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_STANDARD_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 (GST_GIO_STREAM_IS_SEEKABLE (src->stream)) {
- goffset old;
- goffset stream_size;
- gboolean ret;
- GSeekable *seekable = G_SEEKABLE (src->stream);
- GError *err = NULL;
-
- old = g_seekable_tell (seekable);
-
- ret = g_seekable_seek (seekable, 0, G_SEEK_END, src->cancel, &err);
- if (!ret) {
- if (!gst_gio_error (src, "g_seekable_seek", &err, NULL)) {
- if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED))
- GST_DEBUG_OBJECT (src,
- "Seeking to the end of stream is not supported");
- else
- GST_WARNING_OBJECT (src, "Seeking to end of stream failed: %s",
- err->message);
- g_clear_error (&err);
- } else {
- GST_WARNING_OBJECT (src, "Seeking to end of stream failed");
- }
-
- return FALSE;
- }
-
- stream_size = g_seekable_tell (seekable);
-
- ret = g_seekable_seek (seekable, old, G_SEEK_SET, src->cancel, &err);
- if (!ret) {
- if (!gst_gio_error (src, "g_seekable_seek", &err, NULL)) {
- if (GST_GIO_ERROR_MATCHES (err, NOT_SUPPORTED))
- GST_ERROR_OBJECT (src, "Seeking to the old position not supported");
- else
- GST_ERROR_OBJECT (src, "Seeking to the old position failed: %s",
- err->message);
- g_clear_error (&err);
- } else {
- GST_ERROR_OBJECT (src, "Seeking to the old position faile");
- }
-
- return FALSE;
- }
-
- if (stream_size >= 0) {
- *size = stream_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;
-
- g_return_val_if_fail (G_IS_INPUT_STREAM (src->stream), GST_FLOW_ERROR);
-
- 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;
- else
- 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)
-{
- gboolean success;
- GError *err = NULL;
-
- 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 (G_IS_INPUT_STREAM (src->stream)) {
- GST_DEBUG_OBJECT (src, "closing old stream");
-
- /* FIXME: can block but unfortunately we can't use async operations
- * here because they require a running main loop */
- success = g_input_stream_close (src->stream, src->cancel, &err);
-
- if (!success && !gst_gio_error (src, "g_input_stream_close", &err, NULL)) {
- GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL),
- ("g_input_stream_close failed: %s", err->message));
- g_clear_error (&err);
- } else if (!success) {
- GST_ELEMENT_WARNING (src, RESOURCE, CLOSE, (NULL),
- ("g_input_stream_close failed"));
- } else {
- GST_DEBUG_OBJECT (src, "g_input_stream_close succeeded");
- }
-
- g_object_unref (src->stream);
- src->stream = NULL;
- }
-
- src->stream = stream;
-}