mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 20:21:24 +00:00
freeze: Port to 1.0 API
This commit is contained in:
Olivier Crête
parent
ab24971a81
commit
e23e3d6b64
3 changed files with 83 additions and 115 deletions
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@ -313,7 +313,7 @@ dnl Make sure you have a space before and after all plugins
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GST_PLUGINS_NONPORTED=" aiff \
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cdxaparse \
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dccp faceoverlay \
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fieldanalysis freeverb freeze frei0r \
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fieldanalysis freeverb frei0r \
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hdvparse inter ivfparse jp2kdecimator \
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kate librfb \
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mpegpsmux mve mxf mythtv nsf nuvdemux \
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@ -33,8 +33,6 @@
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include "gstfreeze.h"
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GST_DEBUG_CATEGORY_STATIC (freeze_debug);
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@ -63,24 +61,27 @@ static void gst_freeze_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_freeze_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstFlowReturn gst_freeze_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_freeze_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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static GstStateChangeReturn gst_freeze_change_state (GstElement * element,
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GstStateChange transition);
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static GstFlowReturn gst_freeze_play (GstPad * pad, GstBuffer * buff);
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static void gst_freeze_loop (GstPad * pad);
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static gboolean gst_freeze_sink_activate (GstPad * sinkpad);
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static gboolean gst_freeze_sink_activate_pull (GstPad * sinkpad,
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gboolean active);
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static gboolean gst_freeze_sink_event (GstPad * pad, GstEvent * event);
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static GstFlowReturn gst_freeze_play (GstFreeze * freeze, GstBuffer * buff);
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static void gst_freeze_loop (GstFreeze * freeze);
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static gboolean gst_freeze_sink_activate (GstPad * sinkpad, GstObject * parent);
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static gboolean gst_freeze_sink_activate_mode (GstPad * sinkpad,
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GstObject * parent, GstPadMode mode, gboolean active);
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static gboolean gst_freeze_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static void gst_freeze_clear_buffer (GstFreeze * freeze);
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static void gst_freeze_buffer_free (gpointer data, gpointer user_data);
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GST_BOILERPLATE (GstFreeze, gst_freeze, GstElement, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE (GstFreeze, gst_freeze, GST_TYPE_ELEMENT);
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static void
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gst_freeze_base_init (gpointer klass)
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gst_freeze_class_init (GstFreezeClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_details_simple (element_class, "Stream freezer",
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@ -94,14 +95,6 @@ gst_freeze_base_init (gpointer klass)
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_freeze_src_template));
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}
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static void
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gst_freeze_class_init (GstFreezeClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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element_class->change_state = gst_freeze_change_state;
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object_class->set_property = gst_freeze_set_property;
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object_class->get_property = gst_freeze_get_property;
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@ -118,28 +111,30 @@ gst_freeze_class_init (GstFreezeClass * klass)
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}
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static void
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gst_freeze_init (GstFreeze * freeze, GstFreezeClass * klass)
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gst_freeze_init (GstFreeze * freeze)
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{
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freeze->sinkpad =
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gst_pad_new_from_static_template (&gst_freeze_sink_template, "sink");
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gst_element_add_pad (GST_ELEMENT (freeze), freeze->sinkpad);
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gst_pad_set_activate_function (freeze->sinkpad, gst_freeze_sink_activate);
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gst_pad_set_activatepull_function (freeze->sinkpad,
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gst_freeze_sink_activate_pull);
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gst_pad_set_activatemode_function (freeze->sinkpad,
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gst_freeze_sink_activate_mode);
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gst_pad_set_chain_function (freeze->sinkpad, gst_freeze_chain);
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gst_pad_set_getcaps_function (freeze->sinkpad, gst_pad_proxy_getcaps);
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GST_PAD_SET_PROXY_CAPS (freeze->sinkpad);
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GST_PAD_SET_PROXY_ALLOCATION (freeze->sinkpad);
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gst_pad_set_event_function (freeze->sinkpad, gst_freeze_sink_event);
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gst_element_add_pad (GST_ELEMENT (freeze), freeze->sinkpad);
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freeze->srcpad =
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gst_pad_new_from_static_template (&gst_freeze_src_template, "src");
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GST_PAD_SET_PROXY_CAPS (freeze->srcpad);
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GST_PAD_SET_PROXY_ALLOCATION (freeze->srcpad);
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GST_PAD_SET_PROXY_SCHEDULING (freeze->srcpad);
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gst_element_add_pad (GST_ELEMENT (freeze), freeze->srcpad);
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gst_pad_set_getcaps_function (freeze->srcpad, gst_pad_proxy_getcaps);
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freeze->timestamp_offset = 0;
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freeze->running_time = 0;
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freeze->current = NULL;
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freeze->max_buffers = 1;
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freeze->on_flush = FALSE;
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freeze->buffers = g_queue_new ();
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}
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@ -152,7 +147,7 @@ gst_freeze_dispose (GObject * object)
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g_queue_free (freeze->buffers);
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G_OBJECT_CLASS (parent_class)->dispose (object);
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G_OBJECT_CLASS (gst_freeze_parent_class)->dispose (object);
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}
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static void
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@ -188,9 +183,11 @@ gst_freeze_get_property (GObject * object, guint prop_id,
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}
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static GstFlowReturn
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gst_freeze_chain (GstPad * pad, GstBuffer * buffer)
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gst_freeze_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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return gst_freeze_play (pad, buffer);
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GstFreeze *freeze = GST_FREEZE (parent);
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return gst_freeze_play (freeze, buffer);
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}
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@ -198,73 +195,35 @@ static GstStateChangeReturn
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gst_freeze_change_state (GstElement * element, GstStateChange transition)
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{
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GstFreeze *freeze = GST_FREEZE (element);
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GstStateChangeReturn return_val = GST_STATE_CHANGE_SUCCESS;
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switch (transition) {
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case GST_STATE_CHANGE_READY_TO_PAUSED:
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break;
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case GST_STATE_CHANGE_NULL_TO_READY:
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case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
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freeze->timestamp_offset = freeze->running_time = 0;
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break;
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default:
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break;
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}
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if (GST_ELEMENT_CLASS (parent_class)->change_state)
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return_val =
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GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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switch (transition) {
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case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
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case GST_STATE_CHANGE_READY_TO_NULL:
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break;
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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freeze->timestamp_offset = freeze->running_time = 0;
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break;
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default:
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break;
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}
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return return_val;
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return GST_ELEMENT_CLASS (gst_freeze_parent_class)->change_state (element,
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transition);
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}
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static GstFlowReturn
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gst_freeze_play (GstPad * pad, GstBuffer * buff)
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gst_freeze_play (GstFreeze * freeze, GstBuffer * buf)
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{
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GstFreeze *freeze;
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GstFlowReturn ret = GST_FLOW_OK;
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GstBuffer *outbuf;
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freeze = GST_FREEZE (gst_pad_get_parent (pad));
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if (freeze->on_flush) {
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g_object_unref (freeze);
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return GST_FLOW_FLUSHING;
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}
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/* If it is working in push mode this function will be called by "_chain"
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and buff will never be NULL. In pull mode this function will be called
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by _loop and buff will be NULL */
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if (!buff) {
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ret =
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gst_pad_pull_range (GST_PAD (freeze->sinkpad), freeze->offset, 4096,
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&buff);
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if (ret != GST_FLOW_OK) {
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gst_object_unref (freeze);
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return ret;
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}
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freeze->offset += GST_BUFFER_SIZE (buff);
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}
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if (freeze->current == NULL)
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freeze->timestamp_offset = GST_BUFFER_TIMESTAMP (buf);
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if (g_queue_get_length (freeze->buffers) < freeze->max_buffers ||
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freeze->max_buffers == 0) {
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g_queue_push_tail (freeze->buffers, buff);
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g_queue_push_tail (freeze->buffers, buf);
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GST_DEBUG_OBJECT (freeze, "accepted buffer %u",
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g_queue_get_length (freeze->buffers) - 1);
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} else {
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gst_buffer_unref (buff);
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gst_buffer_unref (buf);
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}
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@ -280,43 +239,72 @@ gst_freeze_play (GstPad * pad, GstBuffer * buff)
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freeze->current = g_queue_peek_head (freeze->buffers);
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}
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GST_BUFFER_TIMESTAMP (freeze->current) = freeze->timestamp_offset +
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outbuf = gst_buffer_copy (freeze->current);
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GST_BUFFER_TIMESTAMP (outbuf) = freeze->timestamp_offset +
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freeze->running_time;
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freeze->running_time += GST_BUFFER_DURATION (freeze->current);
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gst_buffer_ref (freeze->current);
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ret = gst_pad_push (freeze->srcpad, freeze->current);
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gst_object_unref (freeze);
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ret = gst_pad_push (freeze->srcpad, outbuf);
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return ret;
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}
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static void
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gst_freeze_loop (GstPad * pad)
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gst_freeze_loop (GstFreeze * freeze)
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{
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gst_freeze_play (pad, NULL);
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GstBuffer *buf;
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GstFlowReturn ret;
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ret = gst_pad_pull_range (freeze->sinkpad, freeze->offset, 4096, &buf);
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if (ret != GST_FLOW_OK)
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return;
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freeze->offset += gst_buffer_get_size (buf);
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gst_freeze_play (freeze, buf);
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}
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static gboolean
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gst_freeze_sink_activate (GstPad * sinkpad)
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gst_freeze_sink_activate (GstPad * sinkpad, GstObject * parent)
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{
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if (gst_pad_check_pull_range (sinkpad)) {
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return gst_pad_activate_pull (sinkpad, TRUE);
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} else {
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return gst_pad_activate_push (sinkpad, TRUE);
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}
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GstQuery *query;
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GstPadMode mode;
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query = gst_query_new_scheduling ();
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if (!gst_pad_peer_query (sinkpad, query))
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goto no_valid_mode;
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if (gst_query_has_scheduling_mode (query, GST_PAD_MODE_PULL))
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mode = GST_PAD_MODE_PULL;
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else if (gst_query_has_scheduling_mode (query, GST_PAD_MODE_PUSH))
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mode = GST_PAD_MODE_PUSH;
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else
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goto no_valid_mode;
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gst_query_unref (query);
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return gst_pad_activate_mode (sinkpad, mode, TRUE);
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no_valid_mode:
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return FALSE;
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}
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static gboolean
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gst_freeze_sink_activate_pull (GstPad * sinkpad, gboolean active)
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gst_freeze_sink_activate_mode (GstPad * sinkpad, GstObject * parent,
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GstPadMode mode, gboolean active)
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{
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GstFreeze *freeze = GST_FREEZE (parent);
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gboolean result;
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if (mode != GST_PAD_MODE_PULL)
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return TRUE;
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if (active) {
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/* if we have a scheduler we can start the task */
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result = gst_pad_start_task (sinkpad,
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(GstTaskFunction) gst_freeze_loop, sinkpad, NULL);
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(GstTaskFunction) gst_freeze_loop, freeze, NULL);
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} else {
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result = gst_pad_stop_task (sinkpad);
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}
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@ -341,11 +329,10 @@ gst_freeze_clear_buffer (GstFreeze * freeze)
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}
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static gboolean
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gst_freeze_sink_event (GstPad * pad, GstEvent * event)
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gst_freeze_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstFreeze *freeze = GST_FREEZE (parent);
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gboolean ret = TRUE;
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GstFreeze *freeze = GST_FREEZE (gst_pad_get_parent (pad));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_EOS:
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@ -353,17 +340,15 @@ gst_freeze_sink_event (GstPad * pad, GstEvent * event)
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gst_pad_get_name (GST_PAD (freeze->sinkpad)));
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gst_event_unref (event);
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break;
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case GST_EVENT_NEWSEGMENT:
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/* FALL TROUGH */
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case GST_EVENT_STREAM_START:
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case GST_EVENT_FLUSH_STOP:
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gst_freeze_clear_buffer (freeze);
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/* FALL TROUGH */
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default:
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ret = gst_pad_event_default (GST_PAD (freeze->sinkpad), event);
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ret = gst_pad_event_default (GST_PAD (freeze->sinkpad), parent, event);
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break;
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}
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gst_object_unref (freeze);
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return ret;
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}
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@ -382,12 +367,3 @@ GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
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freeze,
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"Stream freezer",
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plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
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/*
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* Local variables:
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* mode: c
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* file-style: k&r
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* c-basic-offset: 2
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* arch-tag: fb0ee62b-cf74-46c0-8e62-93b58bacc0ed
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* End:
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*/
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@ -59,11 +59,3 @@ GType gst_freeze_get_type (void);
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G_END_DECLS
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#endif
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/*
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* Local variables:
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* mode: c
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* file-style: k&r
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* c-basic-offset: 2
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* arch-tag: 559a2214-86a1-4c2f-b497-bdcc5f82acf1
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* End:
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*/
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