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plugins: handle vaapi allocator in allocation query

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In propose_allocation() if the numer of allocation params is zero, the
system's allocator is added first, and lastly the native VA-API
allocator.

In decide_allocation(), the allocations params in query are travered,
looking for a native VA-API allocator. If it is found, it is reused as
src pad allocator. Otherwise, a new allocator is instantiated and
appended in the query.

https://bugzilla.gnome.org/show_bug.cgi?id=789476
This commit is contained in:
Víctor Manuel Jáquez Leal 2018-02-07 09:13:26 +01:00
parent 8855a926be
commit 448105578b
1 changed files with 49 additions and 12 deletions
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61
gst/vaapi/gstvaapipluginbase.c
View file

@ -806,7 +806,7 @@ gst_vaapi_plugin_base_propose_allocation (GstVaapiPluginBase * plugin,
GstCaps *caps = NULL;
GstBufferPool *pool = NULL;
gboolean need_pool;
guint size = 0;
guint size = 0, n_allocators;
gst_query_parse_allocation (query, &caps, &need_pool);
if (!caps)
@ -822,10 +822,23 @@ gst_vaapi_plugin_base_propose_allocation (GstVaapiPluginBase * plugin,
plugin->sinkpad_allocator);
if (!pool)
return FALSE;
gst_query_add_allocation_param (query, plugin->sinkpad_allocator, NULL);
}
/* Set sinkpad allocator as the last allocation param.
*
* If there's none, set system's allocator first and VAAPI allocator
* second
*/
n_allocators = gst_query_get_n_allocation_params (query);
if (n_allocators == 0) {
GstAllocator *allocator;
allocator = gst_allocator_find (GST_ALLOCATOR_SYSMEM);
gst_query_add_allocation_param (query, allocator, NULL);
gst_object_unref (allocator);
}
gst_query_add_allocation_param (query, plugin->sinkpad_allocator, NULL);
gst_query_add_allocation_pool (query, pool, size,
BUFFER_POOL_SINK_MIN_BUFFERS, 0);
if (pool)
@ -861,8 +874,9 @@ gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
GstCaps *caps = NULL;
GstBufferPool *pool;
GstVideoInfo vi;
guint size, min, max, pool_options;
gboolean update_pool = FALSE, update_allocator = FALSE;
guint i, size, min, max, pool_options, num_allocators;
gint index_allocator;
gboolean update_pool = FALSE;
#if (USE_GLX || USE_EGL)
guint idx;
#endif
@ -911,8 +925,25 @@ gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
goto error_invalid_caps;
gst_video_info_force_nv12_if_encoded (&vi);
if (gst_query_get_n_allocation_params (query) > 0)
update_allocator = TRUE;
index_allocator = -1;
num_allocators = gst_query_get_n_allocation_params (query);
for (i = 0; i < num_allocators; i++) {
GstAllocator *allocator = NULL;
gst_query_parse_nth_allocation_param (query, i, &allocator, NULL);
if (!allocator)
continue;
if (g_strcmp0 (allocator->mem_type, GST_VAAPI_VIDEO_MEMORY_NAME) == 0) {
GST_DEBUG_OBJECT (plugin, "found vaapi allocator in query %"
GST_PTR_FORMAT, allocator);
index_allocator = i;
if (plugin->srcpad_allocator)
gst_object_unref (plugin->srcpad_allocator);
plugin->srcpad_allocator = allocator;
break;
}
gst_object_unref (allocator);
}
if (gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
@ -955,11 +986,17 @@ gst_vaapi_plugin_base_decide_allocation (GstVaapiPluginBase * plugin,
else
gst_query_add_allocation_pool (query, pool, size, min, max);
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, plugin->srcpad_allocator,
NULL);
else
gst_query_add_allocation_param (query, plugin->srcpad_allocator, NULL);
/* allocator might be updated by ensure_srcpad_allocator() */
if (plugin->srcpad_allocator) {
if (index_allocator > 0) {
gst_query_set_nth_allocation_param (query, index_allocator,
plugin->srcpad_allocator, NULL);
} else {
GST_DEBUG_OBJECT (plugin, "adding allocator in query %" GST_PTR_FORMAT,
plugin->srcpad_allocator);
gst_query_add_allocation_param (query, plugin->srcpad_allocator, NULL);
}
}
g_clear_object (&plugin->srcpad_buffer_pool);
plugin->srcpad_buffer_pool = pool;