mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-05-03 00:48:44 +00:00
386 lines
10 KiB
C
386 lines
10 KiB
C
/* Copyright (C) 2016-2017 Sebastian Dröge <sebastian@centricular.com>
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*
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* Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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* http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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* <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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* option. This file may not be copied, modified, or distributed
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* except according to those terms.
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*/
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#include "source.h"
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#include <string.h>
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#include <stdint.h>
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typedef struct
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{
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gchar *long_name;
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gchar *description;
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gchar *classification;
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gchar *author;
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void *create_instance;
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gchar **protocols;
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} ElementData;
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static GHashTable *sources;
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/* Declarations for Rust code */
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extern gboolean sources_register (void *plugin);
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extern void *source_new (GstRsSrc * source, void *create_instance);
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extern void source_drop (void *rssource);
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extern GstFlowReturn source_fill (void *rssource, guint64 offset, guint size,
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GstBuffer * buffer);
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extern gboolean source_seek (void *rssource, uint64_t start, uint64_t stop);
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extern gboolean source_set_uri (void *rssource, const char *uri, GError ** err);
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extern char *source_get_uri (void *rssource);
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extern uint64_t source_get_size (void *rssource);
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extern gboolean source_is_seekable (void *rssource);
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extern gboolean source_start (void *rssource);
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extern gboolean source_stop (void *rssource);
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extern void cstring_drop (void *str);
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GST_DEBUG_CATEGORY_STATIC (gst_rs_src_debug);
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#define GST_CAT_DEFAULT gst_rs_src_debug
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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enum
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{
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PROP_0,
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PROP_URI
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};
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static void gst_rs_src_uri_handler_init (gpointer g_iface, gpointer iface_data);
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static void gst_rs_src_finalize (GObject * object);
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static void gst_rs_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_rs_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_rs_src_start (GstBaseSrc * basesrc);
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static gboolean gst_rs_src_stop (GstBaseSrc * basesrc);
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static gboolean gst_rs_src_is_seekable (GstBaseSrc * src);
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static gboolean gst_rs_src_get_size (GstBaseSrc * src, guint64 * size);
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static GstFlowReturn gst_rs_src_fill (GstBaseSrc * src, guint64 offset,
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guint length, GstBuffer * buf);
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static gboolean gst_rs_src_do_seek (GstBaseSrc * src, GstSegment * segment);
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static GObjectClass *parent_class;
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static void
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gst_rs_src_class_init (GstRsSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBaseSrcClass *gstbasesrc_class;
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ElementData *data = g_hash_table_lookup (sources,
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GSIZE_TO_POINTER (G_TYPE_FROM_CLASS (klass)));
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g_assert (data != NULL);
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gobject_class = G_OBJECT_CLASS (klass);
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gstelement_class = GST_ELEMENT_CLASS (klass);
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gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
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gobject_class->set_property = gst_rs_src_set_property;
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gobject_class->get_property = gst_rs_src_get_property;
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g_object_class_install_property (gobject_class, PROP_URI,
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g_param_spec_string ("uri", "URI",
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"URI to read from", NULL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY));
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gobject_class->finalize = gst_rs_src_finalize;
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gst_element_class_set_static_metadata (gstelement_class,
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data->long_name, data->classification, data->description, data->author);
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gst_element_class_add_static_pad_template (gstelement_class, &src_template);
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_rs_src_start);
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_rs_src_stop);
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gstbasesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_rs_src_is_seekable);
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gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_rs_src_get_size);
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gstbasesrc_class->fill = GST_DEBUG_FUNCPTR (gst_rs_src_fill);
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gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_rs_src_do_seek);
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}
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static void
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gst_rs_src_init (GstRsSrc * src, GstRsSrcClass * klass)
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{
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ElementData *data = g_hash_table_lookup (sources,
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GSIZE_TO_POINTER (G_TYPE_FROM_CLASS (klass)));
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g_assert (data != NULL);
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gst_base_src_set_blocksize (GST_BASE_SRC (src), 4096);
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GST_DEBUG_OBJECT (src, "Instantiating");
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src->instance = source_new (src, data->create_instance);
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}
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static void
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gst_rs_src_finalize (GObject * object)
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{
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GstRsSrc *src = GST_RS_SRC (object);
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GST_DEBUG_OBJECT (src, "Finalizing");
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source_drop (src->instance);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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gst_rs_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstRsSrc *src = GST_RS_SRC (object);
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switch (prop_id) {
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case PROP_URI:
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source_set_uri (src->instance, g_value_get_string (value), NULL);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_rs_src_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstRsSrc *src = GST_RS_SRC (object);
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switch (prop_id) {
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case PROP_URI:{
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gchar *str = source_get_uri (src->instance);
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g_value_set_string (value, str);
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if (str)
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cstring_drop (str);
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static GstFlowReturn
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gst_rs_src_fill (GstBaseSrc * basesrc, guint64 offset, guint length,
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GstBuffer * buf)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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GstFlowReturn ret;
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GST_TRACE_OBJECT (src,
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"Filling buffer %p, offset %" G_GUINT64_FORMAT " and length %"
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G_GUINT64_FORMAT, *buf, offset, length);
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ret = source_fill (src->instance, offset, length, buf);
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GST_TRACE_OBJECT (src, "Filled buffer: %s", gst_flow_get_name (ret));
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return ret;
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}
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static gboolean
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gst_rs_src_is_seekable (GstBaseSrc * basesrc)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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gboolean res;
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res = source_is_seekable (src->instance);
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GST_DEBUG_OBJECT (src, "Returning seekable %d", res);
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}
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static gboolean
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gst_rs_src_get_size (GstBaseSrc * basesrc, guint64 * size)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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*size = source_get_size (src->instance);
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GST_DEBUG_OBJECT (src, "Returning size %" G_GUINT64_FORMAT, *size);
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return TRUE;
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}
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/* open the rs, necessary to go to READY state */
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static gboolean
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gst_rs_src_start (GstBaseSrc * basesrc)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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GST_DEBUG_OBJECT (src, "Starting");
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return source_start (src->instance);
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}
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static gboolean
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gst_rs_src_stop (GstBaseSrc * basesrc)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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GST_DEBUG_OBJECT (src, "Stopping");
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/* Ignore stop failures */
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source_stop (src->instance);
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return TRUE;
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}
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static gboolean
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gst_rs_src_do_seek (GstBaseSrc * basesrc, GstSegment * segment)
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{
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GstRsSrc *src = GST_RS_SRC (basesrc);
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gboolean ret;
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GST_DEBUG_OBJECT (src, "Seeking to %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
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GST_TIME_ARGS (segment->start), GST_TIME_ARGS (segment->stop));
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ret = source_seek (src->instance, segment->start, segment->stop);
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if (!ret) {
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GST_DEBUG_OBJECT (src, "Failed to seek");
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return FALSE;
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}
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return GST_BASE_SRC_CLASS (parent_class)->do_seek (basesrc, segment);
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}
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static GstURIType
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gst_rs_src_uri_get_type (GType type)
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{
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return GST_URI_SRC;
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}
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static const gchar *const *
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gst_rs_src_uri_get_protocols (GType type)
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{
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ElementData *data = g_hash_table_lookup (sources, GSIZE_TO_POINTER (type));
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g_assert (data != NULL);
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return (const gchar * const *) data->protocols;
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}
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static gchar *
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gst_rs_src_uri_get_uri (GstURIHandler * handler)
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{
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GstRsSrc *src = GST_RS_SRC (handler);
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gchar *res;
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res = source_get_uri (src->instance);
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GST_DEBUG_OBJECT (src, "Returning URI %s", res);
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return res;
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}
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static gboolean
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gst_rs_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
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GError ** err)
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{
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GstRsSrc *src = GST_RS_SRC (handler);
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GST_DEBUG_OBJECT (src, "Setting URI %s", uri);
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if (!source_set_uri (src->instance, uri, err)) {
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GST_ERROR_OBJECT (src, "Failed to set URI: %s", (*err)->message);
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return FALSE;
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}
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return TRUE;
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}
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static void
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gst_rs_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
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{
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GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
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iface->get_type = gst_rs_src_uri_get_type;
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iface->get_protocols = gst_rs_src_uri_get_protocols;
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iface->get_uri = gst_rs_src_uri_get_uri;
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iface->set_uri = gst_rs_src_uri_set_uri;
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}
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static gpointer
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gst_rs_source_init_class (gpointer data)
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{
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sources = g_hash_table_new (g_direct_hash, g_direct_equal);
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GST_DEBUG_CATEGORY_INIT (gst_rs_src_debug, "rssrc", 0,
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"Rust source base class");
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parent_class = g_type_class_ref (GST_TYPE_BASE_SRC);
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return NULL;
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}
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gboolean
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gst_rs_source_register (GstPlugin * plugin, const gchar * name,
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const gchar * long_name, const gchar * description,
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const gchar * classification, const gchar * author, GstRank rank,
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void *create_instance, const gchar * protocols, gboolean push_only)
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{
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static GOnce gonce = G_ONCE_INIT;
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GTypeInfo type_info = {
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sizeof (GstRsSrcClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_rs_src_class_init,
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NULL,
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NULL,
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sizeof (GstRsSrc),
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0,
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(GInstanceInitFunc) gst_rs_src_init
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};
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GInterfaceInfo iface_info = {
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gst_rs_src_uri_handler_init,
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NULL,
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NULL
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};
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GType type;
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gchar *type_name;
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ElementData *data;
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g_once (&gonce, gst_rs_source_init_class, NULL);
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GST_DEBUG ("Registering for %" GST_PTR_FORMAT ": %s", plugin, name);
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GST_DEBUG (" long name: %s", long_name);
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GST_DEBUG (" description: %s", description);
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GST_DEBUG (" classification: %s", classification);
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GST_DEBUG (" author: %s", author);
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GST_DEBUG (" rank: %d", rank);
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GST_DEBUG (" protocols: %s", protocols);
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GST_DEBUG (" push only: %d", push_only);
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data = g_new0 (ElementData, 1);
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data->long_name = g_strdup (long_name);
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data->description = g_strdup (description);
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data->classification = g_strdup (classification);
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data->author = g_strdup (author);
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data->create_instance = create_instance;
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data->protocols = g_strsplit (protocols, ":", -1);
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type_name = g_strconcat ("RsSrc-", name, NULL);
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type =
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g_type_register_static (push_only ? GST_TYPE_PUSH_SRC : GST_TYPE_BASE_SRC,
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type_name, &type_info, 0);
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g_free (type_name);
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g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &iface_info);
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g_hash_table_insert (sources, GSIZE_TO_POINTER (type), data);
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if (!gst_element_register (plugin, name, rank, type))
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return FALSE;
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return TRUE;
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}
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