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-rw-r--r--gst/multifile/gstmultifilesrc.c322
1 files changed, 322 insertions, 0 deletions
diff --git a/gst/multifile/gstmultifilesrc.c b/gst/multifile/gstmultifilesrc.c
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+++ b/gst/multifile/gstmultifilesrc.c
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+/* GStreamer
+ * Copyright (C) 2006 David A. Schleef <ds@schleef.org>
+ *
+ * gstmultifilesrc.c:
+ *
+ * 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.
+ */
+/**
+ * SECTION:element-multifilesrc
+ * @short_description: reads buffers from sequentially-named files
+ * @see_also: #GstFileSrc
+ *
+ * Reads buffers from sequentially named files.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/base/gstpushsrc.h>
+
+#define GST_TYPE_MULTI_FILE_SRC \
+ (gst_multi_file_src_get_type())
+#define GST_MULTI_FILE_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULTI_FILE_SRC,GstMultiFileSrc))
+#define GST_MULTI_FILE_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULTI_FILE_SRC,GstMultiFileSrcClass))
+#define GST_IS_MULTI_FILE_SRC(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULTI_FILE_SRC))
+#define GST_IS_MULTI_FILE_SRC_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULTI_FILE_SRC))
+
+typedef struct _GstMultiFileSrc GstMultiFileSrc;
+typedef struct _GstMultiFileSrcClass GstMultiFileSrcClass;
+
+struct _GstMultiFileSrc
+{
+ GstPushSrc parent;
+
+ gchar *filename;
+ int index;
+
+ int offset;
+
+ GstCaps *caps;
+};
+
+struct _GstMultiFileSrcClass
+{
+ GstPushSrcClass parent_class;
+};
+
+
+static GstFlowReturn gst_multi_file_src_create (GstPushSrc * src,
+ GstBuffer ** buffer);
+
+static void gst_multi_file_src_dispose (GObject * object);
+
+static void gst_multi_file_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_multi_file_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static GstCaps *gst_multi_file_src_getcaps (GstBaseSrc * src);
+
+
+static GstStaticPadTemplate gst_multi_file_src_pad_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+GST_DEBUG_CATEGORY_STATIC (gst_multi_file_src_debug);
+#define GST_CAT_DEFAULT gst_multi_file_src_debug
+
+static const GstElementDetails gst_multi_file_src_details =
+GST_ELEMENT_DETAILS ("Multi-File Source",
+ "Source/File",
+ "Read stream from files",
+ "David Schleef <ds@schleef.org>");
+
+enum
+{
+ ARG_0,
+ ARG_LOCATION,
+ ARG_INDEX,
+ ARG_CAPS
+};
+
+
+GST_BOILERPLATE (GstMultiFileSrc, gst_multi_file_src, GstPushSrc,
+ GST_TYPE_PUSH_SRC);
+
+static void
+gst_multi_file_src_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ GST_DEBUG_CATEGORY_INIT (gst_multi_file_src_debug, "multifilesrc", 0,
+ "multifilesrc element");
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&gst_multi_file_src_pad_template));
+ gst_element_class_set_details (gstelement_class, &gst_multi_file_src_details);
+}
+
+static void
+gst_multi_file_src_class_init (GstMultiFileSrcClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
+ GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
+
+ gobject_class->set_property = gst_multi_file_src_set_property;
+ gobject_class->get_property = gst_multi_file_src_get_property;
+
+ g_object_class_install_property (gobject_class, ARG_LOCATION,
+ g_param_spec_string ("location", "File Location",
+ "Location of the file to read", NULL, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_INDEX,
+ g_param_spec_int ("index", "File Index",
+ "Index of file to read", 0, INT_MAX, 0, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, ARG_CAPS,
+ g_param_spec_boxed ("caps", "Caps",
+ "Caps of source pad", GST_TYPE_CAPS, G_PARAM_READWRITE));
+
+ gobject_class->dispose = gst_multi_file_src_dispose;
+
+ gstpushsrc_class->create = gst_multi_file_src_create;
+
+ gstbasesrc_class->get_caps = gst_multi_file_src_getcaps;
+
+ if (sizeof (off_t) < 8) {
+ GST_LOG ("No large file support, sizeof (off_t) = %u", sizeof (off_t));
+ }
+}
+
+static void
+gst_multi_file_src_init (GstMultiFileSrc * filesrc,
+ GstMultiFileSrcClass * g_class)
+{
+ GstPad *pad;
+
+ pad = GST_BASE_SRC_PAD (filesrc);
+
+ filesrc->filename = g_strdup ("output-%05d");
+}
+
+static void
+gst_multi_file_src_dispose (GObject * object)
+{
+ GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+
+ g_free (src->filename);
+ src->filename = NULL;
+ if (src->caps)
+ gst_caps_unref (src->caps);
+}
+
+static GstCaps *
+gst_multi_file_src_getcaps (GstBaseSrc * src)
+{
+ GstMultiFileSrc *multi_file_src = GST_MULTI_FILE_SRC (src);
+
+ GST_DEBUG ("returning %" GST_PTR_FORMAT, multi_file_src->caps);
+
+ if (multi_file_src->caps) {
+ return gst_caps_ref (multi_file_src->caps);
+ } else {
+ return gst_caps_new_any ();
+ }
+}
+
+static gboolean
+gst_multi_file_src_set_location (GstMultiFileSrc * src, const gchar * location)
+{
+ g_free (src->filename);
+ if (location != NULL) {
+ src->filename = g_strdup (location);
+ } else {
+ src->filename = NULL;
+ }
+
+ return TRUE;
+}
+static void
+gst_multi_file_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ gst_multi_file_src_set_location (src, g_value_get_string (value));
+ break;
+ case ARG_INDEX:
+ src->index = g_value_get_int (value);
+ break;
+ case ARG_CAPS:
+ {
+ const GstCaps *caps = gst_value_get_caps (value);
+ GstCaps *new_caps;
+
+ if (caps == NULL) {
+ new_caps = gst_caps_new_any ();
+ } else {
+ new_caps = gst_caps_copy (caps);
+ }
+ gst_caps_replace (&src->caps, new_caps);
+ gst_pad_set_caps (GST_BASE_SRC_PAD (src), new_caps);
+ }
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_multi_file_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
+
+ switch (prop_id) {
+ case ARG_LOCATION:
+ g_value_set_string (value, src->filename);
+ break;
+ case ARG_INDEX:
+ g_value_set_int (value, src->index);
+ break;
+ case ARG_CAPS:
+ gst_value_set_caps (value, src->caps);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gchar *
+gst_multi_file_src_get_filename (GstMultiFileSrc * filesrc)
+{
+ gchar *filename;
+
+ filename = g_strdup_printf (filesrc->filename, filesrc->index);
+
+ return filename;
+}
+
+static GstFlowReturn
+gst_multi_file_src_create (GstPushSrc * src, GstBuffer ** buffer)
+{
+ GstMultiFileSrc *filesrc;
+ guint size;
+ gchar *filename;
+ FILE *file;
+ GstBuffer *buf;
+ int ret;
+
+ filesrc = GST_MULTI_FILE_SRC (src);
+
+ filename = gst_multi_file_src_get_filename (filesrc);
+
+ file = fopen (filename, "rb");
+ if (!file) {
+ goto handle_error;
+ }
+
+ fseek (file, 0, SEEK_END);
+ size = ftell (file);
+ fseek (file, 0, SEEK_SET);
+
+ buf = gst_buffer_new_and_alloc (size);
+
+ ret = fread (GST_BUFFER_DATA (buf), size, 1, file);
+ if (ret < 1) {
+ goto handle_error;
+ }
+
+ filesrc->index++;
+
+ GST_BUFFER_SIZE (buf) = size;
+ GST_BUFFER_OFFSET (buf) = filesrc->offset;
+ GST_BUFFER_OFFSET (buf) = filesrc->offset + size;
+ filesrc->offset += size;
+ gst_buffer_set_caps (buf, filesrc->caps);
+
+ fclose (file);
+
+ g_free (filename);
+ *buffer = buf;
+ return GST_FLOW_OK;
+
+handle_error:
+ {
+ switch (errno) {
+ default:{
+ GST_ELEMENT_ERROR (filesrc, RESOURCE, READ,
+ ("Error while reading from file \"%s\".", filename),
+ ("%s", g_strerror (errno)));
+ }
+ }
+ g_free (filename);
+ return GST_FLOW_ERROR;
+ }
+}
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