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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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[532/906] GstGLFilter: implement allocation vfuncs
This commit is contained in:
Matthew Waters
parent
9ab50ed175
commit
a44326f86e
2 changed files with 166 additions and 14 deletions
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@ -74,6 +74,10 @@ static gboolean gst_gl_filter_get_unit_size (GstBaseTransform * trans,
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GstCaps * caps, gsize * size);
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static GstFlowReturn gst_gl_filter_transform (GstBaseTransform * bt,
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GstBuffer * inbuf, GstBuffer * outbuf);
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static gboolean gst_gl_filter_propose_allocation (GstBaseTransform * trans,
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GstQuery * decide_query, GstQuery * query);
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static gboolean gst_gl_filter_decide_allocation (GstBaseTransform * trans,
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GstQuery * query);
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static gboolean gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
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GstCaps * outcaps);
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@ -99,6 +103,10 @@ gst_gl_filter_class_init (GstGLFilterClass * klass)
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GST_BASE_TRANSFORM_CLASS (klass)->start = gst_gl_filter_start;
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GST_BASE_TRANSFORM_CLASS (klass)->stop = gst_gl_filter_stop;
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GST_BASE_TRANSFORM_CLASS (klass)->set_caps = gst_gl_filter_set_caps;
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GST_BASE_TRANSFORM_CLASS (klass)->propose_allocation =
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gst_gl_filter_propose_allocation;
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GST_BASE_TRANSFORM_CLASS (klass)->decide_allocation =
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gst_gl_filter_decide_allocation;
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GST_BASE_TRANSFORM_CLASS (klass)->get_unit_size = gst_gl_filter_get_unit_size;
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g_object_class_install_property (gobject_class, PROP_EXTERNAL_OPENGL_CONTEXT,
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@ -313,27 +321,42 @@ gst_gl_filter_transform_caps (GstBaseTransform * bt,
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{
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//GstGLFilter* filter = GST_GL_FILTER (bt);
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GstStructure *structure;
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GstCaps *newcaps;
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GstCaps *newcaps, *result;
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const GValue *par;
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guint i, n;
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par = NULL;
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newcaps = gst_caps_make_writable (caps);
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structure = gst_caps_get_structure (caps, 0);
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newcaps = gst_caps_new_empty ();
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n = gst_caps_get_size (caps);
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// structure = gst_caps_get_structure (newcaps, 0);
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structure = gst_structure_copy (gst_caps_get_structure (newcaps, 0));
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for (i = 0; i < n; i++) {
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structure = gst_caps_get_structure (caps, i);
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gst_structure_set (structure,
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"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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if (i > 0 && gst_caps_is_subset_structure (newcaps, structure))
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continue;
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newcaps = gst_caps_merge_structure (newcaps, gst_structure_copy (structure));
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structure = gst_structure_copy (structure);
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if ((par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
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gst_structure_set (structure,
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"pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
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newcaps = gst_caps_merge_structure (newcaps, structure);
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} else
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gst_structure_free (structure);
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// gst_structure_set (structure,
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// "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
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// "height", GST_TYPE_INT_RANGE, 1, G_MAXINT, NULL);
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if ((par = gst_structure_get_value (structure, "pixel-aspect-ratio"))) {
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gst_structure_set (structure,
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"pixel-aspect-ratio", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1,
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NULL);
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}
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gst_caps_append_structure (newcaps, structure);
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}
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if (filter) {
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result =
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gst_caps_intersect_full (filter, newcaps, GST_CAPS_INTERSECT_FIRST);
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gst_caps_unref (newcaps);
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newcaps = result;
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}
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GST_DEBUG_OBJECT (bt, "returning caps: %" GST_PTR_FORMAT, newcaps);
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@ -416,6 +439,132 @@ gst_gl_filter_set_caps (GstBaseTransform * bt, GstCaps * incaps,
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return ret;
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}
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static gboolean
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gst_gl_filter_propose_allocation (GstBaseTransform * trans,
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GstQuery * decide_query, GstQuery * query)
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{
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GstGLFilter *filter = GST_GL_FILTER (trans);
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GstBufferPool *pool;
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GstStructure *config;
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GstCaps *caps;
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guint size;
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gboolean need_pool;
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gst_query_parse_allocation (query, &caps, &need_pool);
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if (caps == NULL)
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goto no_caps;
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if ((pool = filter->pool))
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gst_object_ref (pool);
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if (pool != NULL) {
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GstCaps *pcaps;
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/* we had a pool, check caps */
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GST_DEBUG_OBJECT (filter, "check existing pool caps");
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
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if (!gst_caps_is_equal (caps, pcaps)) {
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GST_DEBUG_OBJECT (filter, "pool has different caps");
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/* different caps, we can't use this pool */
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gst_object_unref (pool);
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pool = NULL;
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}
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gst_structure_free (config);
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}
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if (pool == NULL && need_pool) {
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GstVideoInfo info;
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if (!gst_video_info_from_caps (&info, caps))
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goto invalid_caps;
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GST_DEBUG_OBJECT (filter, "create new pool");
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pool = gst_gl_buffer_pool_new (filter->display);
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/* the normal size of a frame */
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size = info.size;
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
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if (!gst_buffer_pool_set_config (pool, config))
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goto config_failed;
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}
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/* we need at least 2 buffer because we hold on to the last one */
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gst_query_add_allocation_pool (query, pool, size, 1, 0);
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/* we also support various metadata */
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gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
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gst_query_add_allocation_meta (query, GST_GL_META_API_TYPE, 0);
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gst_object_unref (pool);
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return TRUE;
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/* ERRORS */
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no_caps:
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{
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GST_DEBUG_OBJECT (trans, "no caps specified");
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return FALSE;
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}
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invalid_caps:
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{
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GST_DEBUG_OBJECT (trans, "invalid caps specified");
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return FALSE;
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}
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config_failed:
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{
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GST_DEBUG_OBJECT (trans, "failed setting config");
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return FALSE;
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}
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}
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static gboolean
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gst_gl_filter_decide_allocation (GstBaseTransform * trans, GstQuery * query)
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{
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GstGLFilter *filter = GST_GL_FILTER (trans);
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GstBufferPool *pool = NULL;
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GstStructure *config;
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GstCaps *caps;
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guint min, max, size;
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gboolean update_pool;
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gst_query_parse_allocation (query, &caps, NULL);
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if (gst_query_get_n_allocation_pools (query) > 0) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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update_pool = TRUE;
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} else {
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GstVideoInfo vinfo;
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gst_video_info_init (&vinfo);
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gst_video_info_from_caps (&vinfo, caps);
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size = vinfo.size;
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min = max = 0;
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update_pool = FALSE;
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}
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if (!pool)
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pool = gst_gl_buffer_pool_new (filter->display);
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_GL_META);
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gst_buffer_pool_set_config (pool, config);
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if (update_pool)
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gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
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else
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gst_query_add_allocation_pool (query, pool, size, min, max);
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gst_object_unref (pool);
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return TRUE;
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}
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static GstFlowReturn
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gst_gl_filter_transform (GstBaseTransform * bt, GstBuffer * inbuf,
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GstBuffer * outbuf)
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@ -27,6 +27,7 @@
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#include <gst/base/gstbasetransform.h>
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#include <gst/video/video.h>
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#include "gstglbufferpool.h"
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#include "gstglmeta.h"
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G_BEGIN_DECLS
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@ -57,6 +58,8 @@ struct _GstGLFilter
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{
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GstBaseTransform base_transform;
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GstBufferPool *pool;
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GstGLDisplay *display;
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gint width;
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