3 * Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
30 #include "gstqtelements.h"
32 #include <QtGui/QGuiApplication>
34 #define GST_CAT_DEFAULT gst_debug_qt_gl_src
35 GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
37 #define DEFAULT_IS_LIVE TRUE
39 static void gst_qt_src_set_property (GObject * object, guint prop_id,
40 const GValue * value, GParamSpec * pspec);
41 static void gst_qt_src_get_property (GObject * object, guint prop_id,
42 GValue * value, GParamSpec * pspec);
44 static void gst_qt_src_finalize (GObject * object);
46 static gboolean gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
47 static GstCaps *gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter);
48 static gboolean gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query);
50 static gboolean gst_qt_src_decide_allocation (GstBaseSrc * bsrc,
52 static GstFlowReturn gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer);
53 static GstStateChangeReturn gst_qt_src_change_state (GstElement * element,
54 GstStateChange transition);
55 static gboolean gst_qt_src_start (GstBaseSrc * basesrc);
56 static gboolean gst_qt_src_stop (GstBaseSrc * basesrc);
57 static gboolean gst_qt_src_unlock(GstBaseSrc *basesrc);
59 static GstStaticPadTemplate gst_qt_src_template =
60 GST_STATIC_PAD_TEMPLATE ("src",
63 GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
64 "format = (string) RGBA, "
65 "width = " GST_VIDEO_SIZE_RANGE ", "
66 "height = " GST_VIDEO_SIZE_RANGE ", "
67 "framerate = " GST_VIDEO_FPS_RANGE ", "
68 "texture-target = (string) 2D"));
77 #define gst_qt_src_parent_class parent_class
78 G_DEFINE_TYPE_WITH_CODE (GstQtSrc, gst_qt_src,
79 GST_TYPE_PUSH_SRC, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
80 "qtsrc", 0, "Qt Video Src"));
81 GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (qmlglsrc, "qmlglsrc",
82 GST_RANK_NONE, GST_TYPE_QT_SRC, qt5_element_init (plugin));
84 static const gfloat vertical_flip_matrix[] = {
85 1.0f, 0.0f, 0.0f, 0.0f,
86 0.0f, -1.0f, 0.0f, 0.0f,
87 0.0f, 0.0f, 1.0f, 0.0f,
88 0.0f, 1.0f, 0.0f, 1.0f,
92 gst_qt_src_class_init (GstQtSrcClass * klass)
94 GObjectClass *gobject_class = (GObjectClass *) klass;
95 GstElementClass *gstelement_class = (GstElementClass *) klass;
96 GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
97 GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
99 gobject_class->set_property = gst_qt_src_set_property;
100 gobject_class->get_property = gst_qt_src_get_property;
101 gobject_class->finalize = gst_qt_src_finalize;
103 gst_element_class_set_metadata (gstelement_class, "Qt Video Source",
104 "Source/Video", "A video src that captures a window from a QML view",
105 "Multimedia Team <shmmmw@freescale.com>");
107 g_object_class_install_property (gobject_class, PROP_WINDOW,
108 g_param_spec_pointer ("window", "QQuickWindow",
109 "The QQuickWindow to place in the object hierarchy",
110 (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
112 g_object_class_install_property (gobject_class, PROP_DEFAULT_FBO,
113 g_param_spec_boolean ("use-default-fbo",
114 "Whether to use default FBO",
115 "When set it will not create a new FBO for the QML render thread",
116 FALSE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
118 gst_element_class_add_pad_template (gstelement_class,
119 gst_static_pad_template_get (&gst_qt_src_template));
121 gstelement_class->change_state = gst_qt_src_change_state;
122 gstbasesrc_class->set_caps = gst_qt_src_setcaps;
123 gstbasesrc_class->get_caps = gst_qt_src_get_caps;
124 gstbasesrc_class->query = gst_qt_src_query;
125 gstbasesrc_class->start = gst_qt_src_start;
126 gstbasesrc_class->stop = gst_qt_src_stop;
127 gstbasesrc_class->unlock = gst_qt_src_unlock;
128 gstbasesrc_class->decide_allocation = gst_qt_src_decide_allocation;
130 gstpushsrc_class->fill = gst_qt_src_fill;
134 gst_qt_src_init (GstQtSrc * src)
136 gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
137 gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE);
138 src->default_fbo = FALSE;
139 src->pending_image_orientation = TRUE;
143 gst_qt_src_set_property (GObject * object, guint prop_id,
144 const GValue * value, GParamSpec * pspec)
146 GstQtSrc *qt_src = GST_QT_SRC (object);
151 static_cast < QQuickWindow * >(g_value_get_pointer (value));
153 if (qt_src->window) {
154 delete qt_src->window;
155 qt_src->window = NULL;
159 qt_src->window = new QtGLWindow (NULL, qt_src->qwindow);
163 case PROP_DEFAULT_FBO:
164 qt_src->default_fbo = g_value_get_boolean (value);
166 qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
169 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
175 gst_qt_src_get_property (GObject * object, guint prop_id,
176 GValue * value, GParamSpec * pspec)
178 GstQtSrc *qt_src = GST_QT_SRC (object);
182 g_value_set_pointer (value, qt_src->qwindow);
184 case PROP_DEFAULT_FBO:
185 g_value_set_boolean (value, qt_src->default_fbo);
188 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
194 gst_qt_src_finalize (GObject * object)
196 GstQtSrc *qt_src = GST_QT_SRC (object);
198 GST_DEBUG ("qmlglsrc finalize");
200 gst_object_unref (qt_src->context);
201 qt_src->context = NULL;
203 if (qt_src->qt_context)
204 gst_object_unref (qt_src->qt_context);
205 qt_src->qt_context = NULL;
208 gst_object_unref (qt_src->display);
209 qt_src->display = NULL;
212 delete qt_src->window;
214 G_OBJECT_CLASS (parent_class)->finalize (object);
218 gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
220 GstQtSrc *qt_src = GST_QT_SRC (bsrc);
222 GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps);
224 if (!gst_video_info_from_caps (&qt_src->v_info, caps))
227 if (!qt_window_set_caps (qt_src->window, caps))
234 gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
236 GstCaps *caps = NULL, *temp = NULL;
237 GstPadTemplate *pad_template;
238 GstBaseSrcClass *bclass = GST_BASE_SRC_GET_CLASS (bsrc);
239 GstQtSrc *qt_src = GST_QT_SRC (bsrc);
243 if (qt_src->window) {
244 qt_src->window->getGeometry (&width, &height);
248 gst_element_class_get_pad_template (GST_ELEMENT_CLASS (bclass), "src");
249 if (pad_template != NULL)
250 caps = gst_pad_template_get_caps (pad_template);
252 if (qt_src->window) {
253 temp = gst_caps_copy (caps);
254 guint n_caps = gst_caps_get_size (caps);
256 for (i = 0; i < n_caps; i++) {
257 GstStructure *s = gst_caps_get_structure (temp, i);
258 gst_structure_set (s, "width", G_TYPE_INT, width, NULL);
259 gst_structure_set (s, "height", G_TYPE_INT, height, NULL);
260 /* because the framerate is unknown */
261 gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
262 gst_structure_set (s, "pixel-aspect-ratio",
263 GST_TYPE_FRACTION, 1, 1, NULL);
266 gst_caps_unref (caps);
271 GstCaps *intersection;
274 gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
275 gst_caps_unref (caps);
283 gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query)
285 GstQtSrc *qt_src = GST_QT_SRC (bsrc);
286 gboolean res = FALSE;
288 switch (GST_QUERY_TYPE (query)) {
289 case GST_QUERY_CONTEXT:
291 if (!qt_window_is_scenegraph_initialized (qt_src->window))
294 if (!qt_src->display && !qt_src->qt_context) {
295 if (!qt_src->display)
296 qt_src->display = qt_window_get_display (qt_src->window);
297 if (!qt_src->qt_context)
298 qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
299 if (!qt_src->context)
300 qt_src->context = qt_window_get_context (qt_src->window);
303 if (gst_gl_handle_context_query ((GstElement *) qt_src, query,
304 qt_src->display, qt_src->context, qt_src->qt_context))
310 res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
318 _find_local_gl_context (GstQtSrc * qt_src)
320 if (gst_gl_query_local_gl_context (GST_ELEMENT (qt_src), GST_PAD_SRC,
327 gst_qt_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
329 GstBufferPool *pool = NULL;
330 GstStructure *config;
332 guint min, max, size, n, i;
333 gboolean update_pool, update_allocator;
334 GstAllocator *allocator;
335 GstAllocationParams params;
336 GstGLVideoAllocationParams *glparams;
338 GstQtSrc *qt_src = GST_QT_SRC (bsrc);
340 if (gst_query_find_allocation_meta (query,
341 GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, NULL)) {
342 qt_src->downstream_supports_affine_meta = TRUE;
344 qt_src->downstream_supports_affine_meta = FALSE;
347 gst_query_parse_allocation (query, &caps, NULL);
351 gst_video_info_from_caps (&vinfo, caps);
353 n = gst_query_get_n_allocation_pools (query);
356 for (i = 0; i < n; i++) {
357 gst_query_parse_nth_allocation_pool (query, i, &pool, &size, &min, &max);
359 if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
361 gst_object_unref (pool);
373 if (!qt_src->context && !_find_local_gl_context (qt_src))
376 if (!qt_window_set_context (qt_src->window, qt_src->context))
380 if (!qt_src->context || !GST_IS_GL_CONTEXT (qt_src->context))
383 pool = gst_gl_buffer_pool_new (qt_src->context);
384 GST_INFO_OBJECT (qt_src, "No pool, create one ourself %p", pool);
387 config = gst_buffer_pool_get_config (pool);
389 gst_buffer_pool_config_set_params (config, caps, size, min, max);
390 gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
391 if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
392 gst_buffer_pool_config_add_option (config,
393 GST_BUFFER_POOL_OPTION_GL_SYNC_META);
395 if (gst_query_get_n_allocation_params (query) > 0) {
396 gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
397 gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
398 GST_INFO_OBJECT (qt_src, "got allocator %p", allocator);
399 update_allocator = TRUE;
402 gst_allocation_params_init (¶ms);
403 update_allocator = FALSE;
407 gst_gl_video_allocation_params_new (qt_src->context, ¶ms, &vinfo, 0,
408 NULL, GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);
409 gst_buffer_pool_config_set_gl_allocation_params (config,
410 (GstGLAllocationParams *) glparams);
411 gst_gl_allocation_params_free ((GstGLAllocationParams *) glparams);
413 if (!gst_buffer_pool_set_config (pool, config))
414 GST_WARNING_OBJECT (qt_src, "Failed to set buffer pool config");
416 if (update_allocator)
417 gst_query_set_nth_allocation_param (query, 0, allocator, ¶ms);
419 gst_query_add_allocation_param (query, allocator, ¶ms);
421 gst_object_unref (allocator);
424 gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
426 gst_query_add_allocation_pool (query, pool, size, min, max);
427 gst_object_unref (pool);
429 GST_INFO_OBJECT (qt_src, "successfully decide_allocation");
434 gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
436 GstQtSrc *qt_src = GST_QT_SRC (psrc);
437 GstGLContext* context = qt_src->context;
438 GstGLSyncMeta *sync_meta;
440 GST_DEBUG_OBJECT (qt_src, "setting buffer %p", buffer);
442 if (!qt_window_set_buffer (qt_src->window, buffer)) {
443 GST_ERROR_OBJECT (qt_src, "failed to fill buffer %p", buffer);
444 return GST_FLOW_ERROR;
447 sync_meta = gst_buffer_get_gl_sync_meta(buffer);
449 gst_gl_sync_meta_wait(sync_meta, context);
451 if (!qt_src->downstream_supports_affine_meta) {
452 if (qt_src->pending_image_orientation) {
453 /* let downstream know the image orientation is vertical filp */
454 GstTagList *image_orientation_tag =
455 gst_tag_list_new (GST_TAG_IMAGE_ORIENTATION, "flip-rotate-180", NULL);
457 gst_pad_push_event (GST_BASE_SRC_PAD (psrc),
458 gst_event_new_tag (image_orientation_tag));
460 qt_src->pending_image_orientation = FALSE;
463 GstVideoAffineTransformationMeta *trans_meta;
464 trans_meta = gst_buffer_add_video_affine_transformation_meta (buffer);
465 gst_video_affine_transformation_meta_apply_matrix (trans_meta,
466 vertical_flip_matrix);
469 GST_DEBUG_OBJECT (qt_src, "buffer fill done %p", buffer);
474 static GstStateChangeReturn
475 gst_qt_src_change_state (GstElement * element, GstStateChange transition)
477 GstQtSrc *qt_src = GST_QT_SRC (element);
478 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
479 QGuiApplication *app;
481 GST_DEBUG ("changing state: %s => %s",
482 gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
483 gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
485 switch (transition) {
486 case GST_STATE_CHANGE_NULL_TO_READY:
487 app = static_cast < QGuiApplication * >(QCoreApplication::instance ());
489 GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
490 ("%s", "Failed to connect to Qt"),
491 ("%s", "Could not retrieve QGuiApplication instance"));
492 return GST_STATE_CHANGE_FAILURE;
495 if (!qt_src->window) {
496 GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
497 ("%s", "Required property \'window\' not set"), (NULL));
498 return GST_STATE_CHANGE_FAILURE;
501 if (!qt_window_is_scenegraph_initialized (qt_src->window)) {
502 GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
503 ("%s", "Could not initialize window system"), (NULL));
504 return GST_STATE_CHANGE_FAILURE;
507 qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
510 case GST_STATE_CHANGE_READY_TO_PAUSED:
512 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
518 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
519 if (ret == GST_STATE_CHANGE_FAILURE)
522 switch (transition) {
523 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
525 case GST_STATE_CHANGE_PAUSED_TO_READY:
527 case GST_STATE_CHANGE_READY_TO_NULL:
537 gst_qt_src_start (GstBaseSrc * basesrc)
539 GstQtSrc *qt_src = GST_QT_SRC (basesrc);
541 /* already has get OpenGL configuration from qt */
542 if (qt_src->display && qt_src->qt_context)
545 if (!qt_window_is_scenegraph_initialized (qt_src->window))
548 qt_src->display = qt_window_get_display (qt_src->window);
549 qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
550 qt_src->context = qt_window_get_context (qt_src->window);
552 if (!qt_src->display || !qt_src->qt_context) {
553 GST_ERROR_OBJECT (qt_src,
554 "Could not retrieve window system OpenGL configuration");
558 GST_DEBUG_OBJECT (qt_src, "Got qt display %p and qt gl context %p",
559 qt_src->display, qt_src->qt_context);
564 gst_qt_src_unlock(GstBaseSrc *basesrc)
566 GstQtSrc *qt_src = GST_QT_SRC (basesrc);
568 qt_window_stop (qt_src->window);
573 gst_qt_src_stop (GstBaseSrc * basesrc)