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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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appsink: add support for buffer lists
https://bugzilla.gnome.org/show_bug.cgi?id=752363
This commit is contained in:
Patricia Muscalu
Jan Schmidt
parent
08ee940de2
commit
f1562053fe
4 changed files with 241 additions and 25 deletions
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@ -68,6 +68,7 @@
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#include <gst/gst.h>
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#include <gst/base/gstbasesink.h>
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#include <gst/gstbuffer.h>
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#include <gst/gstbufferlist.h>
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#include <string.h>
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@ -94,6 +95,7 @@ struct _GstAppSinkPrivate
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gboolean unlock;
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gboolean started;
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gboolean is_eos;
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gboolean buffer_lists_supported;
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GstAppSinkCallbacks callbacks;
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gpointer user_data;
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@ -124,6 +126,7 @@ enum
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#define DEFAULT_PROP_MAX_BUFFERS 0
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#define DEFAULT_PROP_DROP FALSE
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#define DEFAULT_PROP_WAIT_ON_EOS TRUE
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#define DEFAULT_PROP_BUFFER_LIST FALSE
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enum
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{
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@ -134,6 +137,7 @@ enum
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PROP_MAX_BUFFERS,
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PROP_DROP,
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PROP_WAIT_ON_EOS,
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PROP_BUFFER_LIST,
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PROP_LAST
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};
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@ -162,8 +166,12 @@ static gboolean gst_app_sink_event (GstBaseSink * sink, GstEvent * event);
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static gboolean gst_app_sink_query (GstBaseSink * bsink, GstQuery * query);
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static GstFlowReturn gst_app_sink_preroll (GstBaseSink * psink,
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GstBuffer * buffer);
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static GstFlowReturn gst_app_sink_render_common (GstBaseSink * psink,
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GstMiniObject * data, gboolean is_list);
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static GstFlowReturn gst_app_sink_render (GstBaseSink * psink,
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GstBuffer * buffer);
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static GstFlowReturn gst_app_sink_render_list (GstBaseSink * psink,
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GstBufferList * list);
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static gboolean gst_app_sink_setcaps (GstBaseSink * sink, GstCaps * caps);
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static GstCaps *gst_app_sink_getcaps (GstBaseSink * psink, GstCaps * filter);
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@ -216,6 +224,10 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
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"Drop old buffers when the buffer queue is filled", DEFAULT_PROP_DROP,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_BUFFER_LIST,
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g_param_spec_boolean ("buffer-list", "Buffer List",
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"Use buffer lists", DEFAULT_PROP_BUFFER_LIST,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstAppSink::wait-on-eos:
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*
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@ -413,6 +425,7 @@ gst_app_sink_class_init (GstAppSinkClass * klass)
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basesink_class->event = gst_app_sink_event;
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basesink_class->preroll = gst_app_sink_preroll;
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basesink_class->render = gst_app_sink_render;
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basesink_class->render_list = gst_app_sink_render_list;
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basesink_class->get_caps = gst_app_sink_getcaps;
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basesink_class->set_caps = gst_app_sink_setcaps;
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basesink_class->query = gst_app_sink_query;
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@ -442,6 +455,7 @@ gst_app_sink_init (GstAppSink * appsink)
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priv->max_buffers = DEFAULT_PROP_MAX_BUFFERS;
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priv->drop = DEFAULT_PROP_DROP;
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priv->wait_on_eos = DEFAULT_PROP_WAIT_ON_EOS;
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priv->buffer_lists_supported = DEFAULT_PROP_BUFFER_LIST;
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}
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static void
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@ -507,6 +521,10 @@ gst_app_sink_set_property (GObject * object, guint prop_id,
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case PROP_DROP:
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gst_app_sink_set_drop (appsink, g_value_get_boolean (value));
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break;
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case PROP_BUFFER_LIST:
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gst_app_sink_set_buffer_list_support (appsink,
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g_value_get_boolean (value));
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break;
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case PROP_WAIT_ON_EOS:
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gst_app_sink_set_wait_on_eos (appsink, g_value_get_boolean (value));
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break;
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@ -545,6 +563,10 @@ gst_app_sink_get_property (GObject * object, guint prop_id, GValue * value,
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case PROP_DROP:
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g_value_set_boolean (value, gst_app_sink_get_drop (appsink));
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break;
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case PROP_BUFFER_LIST:
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g_value_set_boolean (value,
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gst_app_sink_get_buffer_list_support (appsink));
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break;
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case PROP_WAIT_ON_EOS:
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g_value_set_boolean (value, gst_app_sink_get_wait_on_eos (appsink));
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break;
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@ -753,20 +775,17 @@ flushing:
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}
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}
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static GstBuffer *
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static GstMiniObject *
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dequeue_buffer (GstAppSink * appsink)
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{
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GstAppSinkPrivate *priv = appsink->priv;
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GstBuffer *buffer;
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GstMiniObject *obj;
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do {
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GstMiniObject *obj;
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obj = g_queue_pop_head (priv->queue);
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if (GST_IS_BUFFER (obj)) {
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buffer = GST_BUFFER_CAST (obj);
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GST_DEBUG_OBJECT (appsink, "dequeued buffer %p", buffer);
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if (GST_IS_BUFFER (obj) || GST_IS_BUFFER_LIST (obj)) {
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GST_DEBUG_OBJECT (appsink, "dequeued buffer/list %p", obj);
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priv->num_buffers--;
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break;
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} else if (GST_IS_EVENT (obj)) {
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@ -794,11 +813,12 @@ dequeue_buffer (GstAppSink * appsink)
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}
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} while (TRUE);
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return buffer;
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return obj;
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}
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static GstFlowReturn
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gst_app_sink_render (GstBaseSink * psink, GstBuffer * buffer)
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gst_app_sink_render_common (GstBaseSink * psink, GstMiniObject * data,
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gboolean is_list)
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{
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GstFlowReturn ret;
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GstAppSink *appsink = GST_APP_SINK_CAST (psink);
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@ -819,17 +839,17 @@ restart:
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priv->last_caps);
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}
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GST_DEBUG_OBJECT (appsink, "pushing render buffer %p on queue (%d)",
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buffer, priv->num_buffers);
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GST_DEBUG_OBJECT (appsink, "pushing render buffer/list %p on queue (%d)",
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data, priv->num_buffers);
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while (priv->max_buffers > 0 && priv->num_buffers >= priv->max_buffers) {
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if (priv->drop) {
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GstBuffer *old;
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GstMiniObject *old;
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/* we need to drop the oldest buffer and try again */
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/* we need to drop the oldest buffer/list and try again */
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if ((old = dequeue_buffer (appsink))) {
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GST_DEBUG_OBJECT (appsink, "dropping old buffer %p", old);
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gst_buffer_unref (old);
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GST_DEBUG_OBJECT (appsink, "dropping old buffer/list %p", old);
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gst_mini_object_unref (old);
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}
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} else {
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GST_DEBUG_OBJECT (appsink, "waiting for free space, length %d >= %d",
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@ -851,8 +871,8 @@ restart:
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goto flushing;
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}
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}
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/* we need to ref the buffer when pushing it in the queue */
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g_queue_push_tail (priv->queue, gst_buffer_ref (buffer));
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/* we need to ref the buffer/list when pushing it in the queue */
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g_queue_push_tail (priv->queue, gst_mini_object_ref (data));
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priv->num_buffers++;
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g_cond_signal (&priv->cond);
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emit = priv->emit_signals;
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@ -880,6 +900,43 @@ stopping:
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}
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}
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static GstFlowReturn
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gst_app_sink_render (GstBaseSink * psink, GstBuffer * buffer)
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{
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return gst_app_sink_render_common (psink, GST_MINI_OBJECT_CAST (buffer),
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FALSE);
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}
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static GstFlowReturn
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gst_app_sink_render_list (GstBaseSink * sink, GstBufferList * list)
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{
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GstFlowReturn flow;
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GstAppSink *appsink;
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GstBuffer *buffer;
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guint i, len;
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appsink = GST_APP_SINK_CAST (sink);
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if (appsink->priv->buffer_lists_supported)
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return gst_app_sink_render_common (sink, GST_MINI_OBJECT_CAST (list), TRUE);
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/* The application doesn't support buffer lists, extract individual buffers
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* then and push them one-by-one */
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GST_INFO_OBJECT (sink, "chaining each group in list as a merged buffer");
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len = gst_buffer_list_length (list);
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flow = GST_FLOW_OK;
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for (i = 0; i < len; i++) {
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buffer = gst_buffer_list_get (list, i);
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flow = gst_app_sink_render (sink, buffer);
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if (flow != GST_FLOW_OK)
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break;
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}
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return flow;
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}
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static GstCaps *
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gst_app_sink_getcaps (GstBaseSink * psink, GstCaps * filter)
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{
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@ -1185,6 +1242,57 @@ gst_app_sink_get_drop (GstAppSink * appsink)
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return result;
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}
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/**
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* gst_app_sink_set_buffer_list_support:
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* @appsink: a #GstAppSink
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* @buffer_list: enable or disable buffer list support
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*
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* Instruct @appsink to enable or disable buffer list support.
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*
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*/
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void
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gst_app_sink_set_buffer_list_support (GstAppSink * appsink,
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gboolean buffer_list)
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{
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GstAppSinkPrivate *priv;
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g_return_if_fail (GST_IS_APP_SINK (appsink));
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priv = appsink->priv;
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g_mutex_lock (&priv->mutex);
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if (priv->buffer_lists_supported != buffer_list) {
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priv->buffer_lists_supported = buffer_list;
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}
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g_mutex_unlock (&priv->mutex);
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}
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/**
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* gst_app_sink_get_buffer_list_support:
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* @appsink: a #GstAppSink
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*
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* Check if @appsink supports buffer lists.
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*
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* Returns: %TRUE if @appsink supports buffer lists.
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*
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*/
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gboolean
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gst_app_sink_get_buffer_list_support (GstAppSink * appsink)
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{
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gboolean result;
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GstAppSinkPrivate *priv;
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g_return_val_if_fail (GST_IS_APP_SINK (appsink), FALSE);
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priv = appsink->priv;
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g_mutex_lock (&priv->mutex);
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result = priv->buffer_lists_supported;
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g_mutex_unlock (&priv->mutex);
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return result;
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}
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/**
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* gst_app_sink_set_wait_on_eos:
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* @appsink: a #GstAppSink
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@ -1418,7 +1526,7 @@ gst_app_sink_try_pull_sample (GstAppSink * appsink, GstClockTime timeout)
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{
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GstAppSinkPrivate *priv;
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GstSample *sample = NULL;
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GstBuffer *buffer;
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GstMiniObject *obj;
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gboolean timeout_valid;
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gint64 end_time;
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@ -1454,10 +1562,18 @@ gst_app_sink_try_pull_sample (GstAppSink * appsink, GstClockTime timeout)
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g_cond_wait (&priv->cond, &priv->mutex);
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}
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}
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buffer = dequeue_buffer (appsink);
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GST_DEBUG_OBJECT (appsink, "we have a buffer %p", buffer);
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sample = gst_sample_new (buffer, priv->last_caps, &priv->last_segment, NULL);
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gst_buffer_unref (buffer);
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obj = dequeue_buffer (appsink);
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if (GST_IS_BUFFER (obj)) {
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GST_DEBUG_OBJECT (appsink, "we have a buffer %p", obj);
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sample = gst_sample_new (GST_BUFFER_CAST (obj), priv->last_caps,
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&priv->last_segment, NULL);
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} else {
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GST_DEBUG_OBJECT (appsink, "we have a list %p", obj);
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sample = gst_sample_new (NULL, priv->last_caps, &priv->last_segment, NULL);
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gst_sample_set_buffer_list (sample, GST_BUFFER_LIST_CAST (obj));
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}
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gst_mini_object_unref (obj);
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g_cond_signal (&priv->cond);
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g_mutex_unlock (&priv->mutex);
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@ -117,6 +117,9 @@ guint gst_app_sink_get_max_buffers (GstAppSink *appsink);
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void gst_app_sink_set_drop (GstAppSink *appsink, gboolean drop);
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gboolean gst_app_sink_get_drop (GstAppSink *appsink);
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void gst_app_sink_set_buffer_list_support (GstAppSink *appsink, gboolean drop);
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gboolean gst_app_sink_get_buffer_list_support (GstAppSink *appsink);
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void gst_app_sink_set_wait_on_eos (GstAppSink *appsink, gboolean wait);
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gboolean gst_app_sink_get_wait_on_eos (GstAppSink *appsink);
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@ -224,7 +224,7 @@ create_buffer_list (void)
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}
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static GstFlowReturn
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callback_function_sample (GstAppSink * appsink, gpointer p_counter)
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callback_function_sample_fallback (GstAppSink * appsink, gpointer p_counter)
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{
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GstSample *sample;
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GstBuffer *buf;
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@ -260,16 +260,50 @@ callback_function_sample (GstAppSink * appsink, gpointer p_counter)
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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callback_function_sample (GstAppSink * appsink, gpointer p_counter)
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{
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GstSample *sample;
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GstBufferList *list;
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gint *p_int_counter = p_counter;
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guint len;
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gint i;
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sample = gst_app_sink_pull_sample (appsink);
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list = gst_sample_get_buffer_list (sample);
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fail_unless (GST_IS_BUFFER_LIST (list));
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len = gst_buffer_list_length (list);
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fail_unless_equals_int (len, 3);
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for (i = 0; i < len; i++) {
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GstBuffer *buf = gst_buffer_list_get (list, i);
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fail_unless_equals_int (gst_buffer_get_size (buf), sizeof (gint));
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gst_check_buffer_data (buf, &values[i], sizeof (gint));
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}
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gst_sample_unref (sample);
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*p_int_counter += 1;
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return GST_FLOW_OK;
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}
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GST_START_TEST (test_buffer_list_fallback)
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{
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GstElement *sink;
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GstBufferList *list;
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GstAppSinkCallbacks callbacks = { NULL };
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gint counter = 0;
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gboolean buffer_list_support;
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sink = setup_appsink ();
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callbacks.new_sample = callback_function_sample;
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/* verify that the buffer list support is disabled per default */
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g_object_get (sink, "buffer-list", &buffer_list_support, NULL);
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fail_unless (buffer_list_support == FALSE);
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callbacks.new_sample = callback_function_sample_fallback;
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gst_app_sink_set_callbacks (GST_APP_SINK (sink), &callbacks, &counter, NULL);
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@ -286,6 +320,35 @@ GST_START_TEST (test_buffer_list_fallback)
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GST_END_TEST;
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GST_START_TEST (test_buffer_list_support)
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{
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GstElement *sink;
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GstBufferList *list;
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GstAppSinkCallbacks callbacks = { NULL };
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gint counter = 0;
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sink = setup_appsink ();
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/* enable buffer list support */
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g_object_set (sink, "buffer-list", TRUE, NULL);
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callbacks.new_sample = callback_function_sample;
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gst_app_sink_set_callbacks (GST_APP_SINK (sink), &callbacks, &counter, NULL);
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ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);
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list = create_buffer_list ();
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fail_unless (gst_pad_push_list (mysrcpad, list) == GST_FLOW_OK);
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fail_unless_equals_int (counter, 1);
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ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);
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cleanup_appsink (sink);
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}
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GST_END_TEST;
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GST_START_TEST (test_buffer_list_fallback_signal)
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{
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GstElement *sink;
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@ -294,6 +357,36 @@ GST_START_TEST (test_buffer_list_fallback_signal)
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sink = setup_appsink ();
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/* C calling convention to the rescue.. */
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g_signal_connect (sink, "new-sample",
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G_CALLBACK (callback_function_sample_fallback), &counter);
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g_object_set (sink, "emit-signals", TRUE, NULL);
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ASSERT_SET_STATE (sink, GST_STATE_PLAYING, GST_STATE_CHANGE_ASYNC);
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list = create_buffer_list ();
|
||||
fail_unless (gst_pad_push_list (mysrcpad, list) == GST_FLOW_OK);
|
||||
|
||||
fail_unless_equals_int (counter, 3);
|
||||
|
||||
ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);
|
||||
cleanup_appsink (sink);
|
||||
}
|
||||
|
||||
GST_END_TEST;
|
||||
|
||||
GST_START_TEST (test_buffer_list_signal)
|
||||
{
|
||||
GstElement *sink;
|
||||
GstBufferList *list;
|
||||
gint counter = 0;
|
||||
|
||||
sink = setup_appsink ();
|
||||
|
||||
/* enable buffer list support */
|
||||
g_object_set (sink, "buffer-list", TRUE, NULL);
|
||||
|
||||
/* C calling convention to the rescue.. */
|
||||
g_signal_connect (sink, "new-sample", G_CALLBACK (callback_function_sample),
|
||||
&counter);
|
||||
|
|
@ -305,7 +398,7 @@ GST_START_TEST (test_buffer_list_fallback_signal)
|
|||
list = create_buffer_list ();
|
||||
fail_unless (gst_pad_push_list (mysrcpad, list) == GST_FLOW_OK);
|
||||
|
||||
fail_unless_equals_int (counter, 3);
|
||||
fail_unless_equals_int (counter, 1);
|
||||
|
||||
ASSERT_SET_STATE (sink, GST_STATE_NULL, GST_STATE_CHANGE_SUCCESS);
|
||||
cleanup_appsink (sink);
|
||||
|
|
@ -422,7 +515,9 @@ appsink_suite (void)
|
|||
tcase_add_test (tc_chain, test_notify0);
|
||||
tcase_add_test (tc_chain, test_notify1);
|
||||
tcase_add_test (tc_chain, test_buffer_list_fallback);
|
||||
tcase_add_test (tc_chain, test_buffer_list_support);
|
||||
tcase_add_test (tc_chain, test_buffer_list_fallback_signal);
|
||||
tcase_add_test (tc_chain, test_buffer_list_signal);
|
||||
tcase_add_test (tc_chain, test_segment);
|
||||
tcase_add_test (tc_chain, test_pull_with_timeout);
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,5 @@
|
|||
EXPORTS
|
||||
gst_app_sink_get_buffer_list_support
|
||||
gst_app_sink_get_caps
|
||||
gst_app_sink_get_drop
|
||||
gst_app_sink_get_emit_signals
|
||||
|
|
@ -8,6 +9,7 @@ EXPORTS
|
|||
gst_app_sink_is_eos
|
||||
gst_app_sink_pull_preroll
|
||||
gst_app_sink_pull_sample
|
||||
gst_app_sink_set_buffer_list_support
|
||||
gst_app_sink_set_callbacks
|
||||
gst_app_sink_set_caps
|
||||
gst_app_sink_set_drop
|
||||
|
|
|
|||
Loading…
Reference in a new issue