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Code Issues 1 Projects Releases Wiki Activity

glsyncmeta: separate out gpu/cpu waits.

Browse source 
CPU waits are more expensive and are only required if the CPU is ever going to
access the data. GPU waits perform inter-context synchronisation and are cheaper
as they don't require CPU intervention.
This commit is contained in:
Matthew Waters 2016-02-09 12:14:04 +11:00
parent 44c0d75cff
commit cd4a93da3b
4 changed files with 46 additions and 4 deletions
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1
ext/gtk/gtkgstglwidget.c
View file

@ -260,6 +260,7 @@ gtk_gst_gl_widget_render (GtkGLArea * widget, GdkGLContext * context)
sync_meta = gst_buffer_get_gl_sync_meta (buffer);
if (sync_meta) {
/* XXX: the set_sync() seems to be needed for resizing */
gst_gl_sync_meta_set_sync_point (sync_meta, priv->context);
gst_gl_sync_meta_wait (sync_meta, priv->other_context);
}

37
gst-libs/gst/gl/gstglsyncmeta.c
View file

@ -56,12 +56,25 @@ _default_set_sync_gl (GstGLSyncMeta * sync_meta, GstGLContext * context)
gl->Flush ();
GST_LOG ("setting sync object %p", sync_meta->data);
} else {
/* XXX: this a little over the top if the CPU is never going to
* access the data, however this is the legacy path, so... */
gl->Finish ();
}
}
static void
_default_wait_gl (GstGLSyncMeta * sync_meta, GstGLContext * context)
{
const GstGLFuncs *gl = context->gl_vtable;
if (sync_meta->data && gl->WaitSync) {
GST_LOG ("waiting on sync object %p", sync_meta->data);
gl->WaitSync ((GLsync) sync_meta->data, 0, GL_TIMEOUT_IGNORED);
}
}
static void
_default_wait_cpu_gl (GstGLSyncMeta * sync_meta, GstGLContext * context)
{
const GstGLFuncs *gl = context->gl_vtable;
GLenum res;
@ -129,6 +142,7 @@ gst_buffer_add_gl_sync_meta (GstGLContext * context, GstBuffer * buffer)
ret->set_sync_gl = _default_set_sync_gl;
ret->wait_gl = _default_wait_gl;
ret->wait_cpu_gl = _default_wait_cpu_gl;
ret->copy = _default_copy;
ret->free_gl = _default_free_gl;
@ -174,6 +188,25 @@ gst_gl_sync_meta_wait (GstGLSyncMeta * sync_meta, GstGLContext * context)
(GstGLContextThreadFunc) _wait, sync_meta);
}
static void
_wait_cpu (GstGLContext * context, GstGLSyncMeta * sync_meta)
{
g_assert (sync_meta->wait_cpu_gl != NULL);
GST_LOG ("waiting %p", sync_meta);
sync_meta->wait_cpu_gl (sync_meta, context);
}
void
gst_gl_sync_meta_wait_cpu (GstGLSyncMeta * sync_meta, GstGLContext * context)
{
if (sync_meta->wait_cpu)
sync_meta->wait_cpu (sync_meta, context);
else
gst_gl_context_thread_add (context,
(GstGLContextThreadFunc) _wait_cpu, sync_meta);
}
static gboolean
_gst_gl_sync_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
@ -197,6 +230,8 @@ _gst_gl_sync_meta_transform (GstBuffer * dest, GstMeta * meta,
dmeta->set_sync_gl = smeta->set_sync_gl;
dmeta->wait = smeta->wait;
dmeta->wait_gl = smeta->wait_gl;
dmeta->wait_cpu = smeta->wait_cpu;
dmeta->wait_cpu_gl = smeta->wait_cpu_gl;
dmeta->copy = smeta->copy;
dmeta->free = smeta->free;
dmeta->free_gl = smeta->free_gl;
@ -251,6 +286,8 @@ _gst_gl_sync_meta_init (GstGLSyncMeta * sync_meta, gpointer params,
sync_meta->set_sync_gl = NULL;
sync_meta->wait = NULL;
sync_meta->wait_gl = NULL;
sync_meta->wait_cpu = NULL;
sync_meta->wait_cpu_gl = NULL;
sync_meta->copy = NULL;
sync_meta->free = NULL;
sync_meta->free_gl = NULL;

3
gst-libs/gst/gl/gstglsyncmeta.h
View file

@ -42,6 +42,8 @@ struct _GstGLSyncMeta {
void (*set_sync_gl) (GstGLSyncMeta * sync, GstGLContext * context);
void (*wait) (GstGLSyncMeta * sync, GstGLContext * context);
void (*wait_gl) (GstGLSyncMeta * sync, GstGLContext * context);
void (*wait_cpu) (GstGLSyncMeta * sync, GstGLContext * context);
void (*wait_cpu_gl) (GstGLSyncMeta * sync, GstGLContext * context);
void (*copy) (GstGLSyncMeta * src, GstBuffer * sbuffer, GstGLSyncMeta * dest, GstBuffer * dbuffer);
void (*free) (GstGLSyncMeta * sync, GstGLContext * context);
void (*free_gl) (GstGLSyncMeta * sync, GstGLContext * context);
@ -57,6 +59,7 @@ GstGLSyncMeta * gst_buffer_add_gl_sync_meta_full (GstGLContext * context,
gpointer data);
void gst_gl_sync_meta_set_sync_point (GstGLSyncMeta * sync, GstGLContext * context);
void gst_gl_sync_meta_wait (GstGLSyncMeta * sync, GstGLContext * context);
void gst_gl_sync_meta_wait_cpu (GstGLSyncMeta * sync, GstGLContext * context);
G_END_DECLS

5
sys/androidmedia/gstamcvideodec.c
View file

@ -1010,8 +1010,8 @@ _gl_sync_render_unlocked (struct gl_sync *sync)
if (!af_meta) {
GST_WARNING ("Failed to retreive the transformation meta from the "
"gl_sync %p buffer %p", sync, sync->buffer);
} else if (gst_amc_surface_texture_get_transform_matrix (sync->surface->
texture, matrix, &error)) {
} else if (gst_amc_surface_texture_get_transform_matrix (sync->
surface->texture, matrix, &error)) {
gst_video_affine_transformation_meta_apply_matrix (af_meta, matrix);
gst_video_affine_transformation_meta_apply_matrix (af_meta, yflip_matrix);
@ -1370,6 +1370,7 @@ retry:
sync);
sync_meta->set_sync = _amc_gl_set_sync;
sync_meta->wait = _amc_gl_wait;
sync_meta->wait_cpu = _amc_gl_wait;
sync_meta->copy = _amc_gl_copy;
sync_meta->free = _amc_gl_free;