gint
CloseZStream (ZStream *zstream)
{
gint status;
gint flush_status;
if (zstream == NULL)
return ARGUMENT_ERROR;
status = 0;
if (zstream->compress) {
if (zstream->stream->total_in > 0) {
do {
status = deflate (zstream->stream, Z_FINISH);
flush_status = flush_internal (zstream, TRUE);
} while (status == Z_OK); /* We want Z_STREAM_END or error here here */
if (status == Z_STREAM_END)
status = flush_status;
}
deflateEnd (zstream->stream);
} else {
inflateEnd (zstream->stream);
}
g_free (zstream->buffer);
g_free (zstream->stream);
memset (zstream, 0, sizeof (ZStream));
g_free (zstream);
return status;
}
static gboolean
handle_queued_objects (APP_STATE_T * state)
{
GstMiniObject *object = NULL;
g_mutex_lock (&state->queue_lock);
if (state->flushing) {
g_cond_broadcast (&state->cond);
goto beach;
} else if (g_async_queue_length (state->queue) == 0) {
goto beach;
}
if ((object = g_async_queue_try_pop (state->queue))) {
if (GST_IS_BUFFER (object)) {
GstBuffer *buffer = GST_BUFFER_CAST (object);
update_image (state, buffer);
render_scene (state);
gst_buffer_unref (buffer);
if (!SYNC_BUFFERS) {
object = NULL;
}
} else if (GST_IS_QUERY (object)) {
GstQuery *query = GST_QUERY_CAST (object);
GstStructure *s = (GstStructure *) gst_query_get_structure (query);
if (gst_structure_has_name (s, "not-used")) {
g_assert_not_reached ();
} else {
g_assert_not_reached ();
}
} else if (GST_IS_EVENT (object)) {
GstEvent *event = GST_EVENT_CAST (object);
g_print ("\nevent %p %s\n", event,
gst_event_type_get_name (GST_EVENT_TYPE (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
flush_internal (state);
break;
default:
break;
}
gst_event_unref (event);
object = NULL;
}
}
if (object) {
state->popped_obj = object;
g_cond_broadcast (&state->cond);
}
beach:
g_mutex_unlock (&state->queue_lock);
return FALSE;
}
static void
flush_stop (APP_STATE_T * state)
{
GstMiniObject *object = NULL;
g_mutex_lock (state->queue_lock);
while ((object = GST_MINI_OBJECT_CAST (g_async_queue_try_pop (state->queue)))) {
gst_mini_object_unref (object);
}
flush_internal (state);
state->popped_obj = NULL;
state->flushing = FALSE;
g_mutex_unlock (state->queue_lock);
}
static GstPadProbeReturn
query_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
{
APP_STATE_T *state = (APP_STATE_T *) user_data;
GstQuery *query = GST_PAD_PROBE_INFO_QUERY (info);
GstStructure *external_gl_context_desc = NULL;
gchar *platform = NULL;
gchar *gl_apis = NULL;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_ALLOCATION:
{
platform = gst_gl_platform_to_string (GST_GL_PLATFORM_EGL);
gl_apis = gst_gl_api_to_string (GST_GL_API_GLES2);
external_gl_context_desc =
gst_structure_new ("GstVideoGLTextureUploadMeta",
"gst.gl.context.handle", G_TYPE_POINTER, state->context,
"gst.gl.context.type", G_TYPE_STRING, platform,
"gst.gl.context.apis", G_TYPE_STRING, gl_apis, NULL);
gst_query_add_allocation_meta (query,
GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, external_gl_context_desc);
gst_structure_free (external_gl_context_desc);
g_free (gl_apis);
g_free (platform);
GST_DEBUG ("done alocation");
return GST_PAD_PROBE_OK;
break;
}
case GST_QUERY_CONTEXT:
{
return gst_gl_handle_context_query (state->pipeline, query,
(GstGLDisplay **) & state->gst_display);
break;
}
case GST_QUERY_DRAIN:
{
flush_internal (state);
break;
}
default:
break;
}
return GST_PAD_PROBE_OK;
}
static void
flush_start (APP_STATE_T * state)
{
GstMiniObject *object = NULL;
g_mutex_lock (state->queue_lock);
state->flushing = TRUE;
g_cond_broadcast (state->cond);
g_mutex_unlock (state->queue_lock);
while ((object = g_async_queue_try_pop (state->queue))) {
gst_mini_object_unref (object);
}
g_mutex_lock (state->queue_lock);
flush_internal (state);
state->popped_obj = NULL;
g_mutex_unlock (state->queue_lock);
}
static gboolean
handle_queued_objects (APP_STATE_T * state)
{
GstMiniObject *object = NULL;
g_mutex_lock (state->queue_lock);
if (state->flushing) {
g_cond_broadcast (state->cond);
goto beach;
} else if (g_async_queue_length (state->queue) == 0) {
goto beach;
}
if ((object = g_async_queue_try_pop (state->queue))) {
if (GST_IS_BUFFER (object)) {
GstBuffer *buffer = GST_BUFFER_CAST (object);
update_image (state, buffer);
render_scene (state);
gst_buffer_unref (buffer);
if (!SYNC_BUFFERS) {
object = NULL;
}
} else if (GST_IS_QUERY (object)) {
GstQuery *query = GST_QUERY_CAST (object);
GstStructure *s = (GstStructure *) gst_query_get_structure (query);
if (gst_structure_has_name (s, "eglglessink-allocate-eglimage")) {
GstBuffer *buffer;
GstVideoFormat format;
gint width, height;
GValue v = { 0, };
if (!gst_structure_get_enum (s, "format", GST_TYPE_VIDEO_FORMAT,
(gint *) & format)
|| !gst_structure_get_int (s, "width", &width)
|| !gst_structure_get_int (s, "height", &height)) {
g_assert_not_reached ();
}
buffer =
gst_egl_allocate_eglimage (state,
GST_EGL_IMAGE_BUFFER_POOL (state->pool)->allocator, format,
width, height);
g_value_init (&v, G_TYPE_POINTER);
g_value_set_pointer (&v, buffer);
gst_structure_set_value (s, "buffer", &v);
g_value_unset (&v);
} else {
g_assert_not_reached ();
}
} else if (GST_IS_EVENT (object)) {
GstEvent *event = GST_EVENT_CAST (object);
g_print ("\nevent %p %s\n", event,
gst_event_type_get_name (GST_EVENT_TYPE (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
flush_internal (state);
break;
default:
break;
}
gst_event_unref (event);
object = NULL;
}
}
if (object) {
state->popped_obj = object;
g_cond_broadcast (state->cond);
}
beach:
g_mutex_unlock (state->queue_lock);
return FALSE;
}
gint
Flush (ZStream *stream)
{
return flush_internal (stream, FALSE);
}
