mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
glupload/egl: Extract EGL image cache and make it public
Extract the EGLImage cache from gstglupload.c, place it in a separate source file gsteglimagecache.c, and make the API public, so it can be reused by the gldownload element. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6792>
This commit is contained in:
Philipp Zabel
Nicolas Dufresne
parent
a18f1af1a4
commit
f18d6fcb40
4 changed files with 249 additions and 118 deletions
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@ -0,0 +1,201 @@
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/*
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* GStreamer
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* Copyright (C) 2024 Pengutronix, Philipp Zabel <graphics@pengutronix.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gsteglimage.h"
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#include "gsteglimage_private.h"
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#include "gsteglimagecache.h"
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struct _GstEGLImageCacheEntry
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{
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GstEGLImage *eglimage[GST_VIDEO_MAX_PLANES];
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};
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struct _GstEGLImageCache
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{
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gint ref_count;
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GHashTable *hash_table; /* for GstMemory -> GstEGLImageCacheEntry lookup */
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GMutex lock; /* protects hash_table */
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};
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/**
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* gst_egl_image_cache_ref:
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* @cache: a #GstEGLImageCache.
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*
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* Increases the refcount of the given image cache by one.
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*
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* Returns: (transfer full): @cache
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*
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* Since: 1.26
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*/
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GstEGLImageCache *
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gst_egl_image_cache_ref (GstEGLImageCache * cache)
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{
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g_atomic_int_inc (&cache->ref_count);
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return cache;
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}
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/**
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* gst_egl_image_cache_unref:
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* @cache: (transfer full): a #GstEGLImageCache.
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*
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* Decreases the refcount of the image cache. If the refcount reaches 0, the
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* image cache will be freed and all cached images will be unreffed.
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*
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* Since: 1.26
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*/
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void
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gst_egl_image_cache_unref (GstEGLImageCache * cache)
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{
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if (g_atomic_int_dec_and_test (&cache->ref_count)) {
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g_hash_table_unref (cache->hash_table);
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g_mutex_clear (&cache->lock);
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g_free (cache);
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}
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}
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static void
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gst_egl_image_cache_entry_remove (GstEGLImageCache * cache, GstMiniObject * mem)
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{
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g_mutex_lock (&cache->lock);
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g_hash_table_remove (cache->hash_table, mem);
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g_mutex_unlock (&cache->lock);
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gst_egl_image_cache_unref (cache);
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}
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static GstEGLImageCacheEntry *
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gst_egl_image_cache_entry_add (GstEGLImageCache * cache, GstMemory * mem)
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{
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GstEGLImageCacheEntry *cache_entry;
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cache_entry = g_new0 (GstEGLImageCacheEntry, 1);
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gst_egl_image_cache_ref (cache);
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gst_mini_object_weak_ref (GST_MINI_OBJECT (mem),
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(GstMiniObjectNotify) gst_egl_image_cache_entry_remove, cache);
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g_mutex_lock (&cache->lock);
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g_hash_table_insert (cache->hash_table, mem, cache_entry);
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g_mutex_unlock (&cache->lock);
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return cache_entry;
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}
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/*
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* Called with the cache lock taken.
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*/
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static void
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gst_egl_image_cache_entry_free (GstEGLImageCacheEntry * cache_entry)
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{
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gint i;
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for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
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if (cache_entry->eglimage[i])
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gst_egl_image_unref (cache_entry->eglimage[i]);
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}
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g_free (cache_entry);
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}
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/**
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* gst_egl_image_cache_lookup:
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* @cache: a #GstEGLImageCache.
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* @mem: a #GstMemory to look a cached #GetEGLImage up for
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* @plane: the plane to select which cached #GstEGLImage to look up for @mem
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* @previous_mem:
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* @cache_entry:
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*
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* Looks up a @cache_entry for @mem if mem is different from @previous_mem.
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* If @mem is the same as @previous_mem, the costly lookup is skipped and the
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* provided (previous) @cache_entry is used instead. In this case, @cache_entry
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* must have been returned by a previous call of @gst_egl_image_cache_lookup
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* with the same @mem.
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*
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* Returns: (nullable): a cached #GstEGLImage for @mem and @plane or %NULL.
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* @previous_mem is set to @mem.
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*
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* Since: 1.26
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*/
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GstEGLImage *
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gst_egl_image_cache_lookup (GstEGLImageCache * cache, GstMemory * mem,
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gint plane, GstMemory ** previous_mem, GstEGLImageCacheEntry ** cache_entry)
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{
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if (mem != *previous_mem) {
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g_mutex_lock (&cache->lock);
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*cache_entry = g_hash_table_lookup (cache->hash_table, mem);
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g_mutex_unlock (&cache->lock);
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*previous_mem = mem;
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}
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if (*cache_entry)
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return (*cache_entry)->eglimage[plane];
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return NULL;
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}
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/**
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* gst_egl_image_cache_store:
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* @cache: a #GstEGLImageCache.
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* @mem: a #GstMemory to store @eglimage for
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* @plane: the plane slot to store @eglimage in
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* @eglimage: a #GstEGLImage to be cached for @mem and @plane
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* @cache_entry: a #GstEGLImageCacheEntry looked up for @mem, or %NULL
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*
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* Creates a new cache_entry for mem if no cache_entry is provided.
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* Stores the eglimage for the given plane in the cache_entry. If an
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* existing cache entry is provided, it must be returned by a
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* @gst_egl_image_cache_lookup call with the same @mem.
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*
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* Since: 1.26
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*/
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void
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gst_egl_image_cache_store (GstEGLImageCache * cache, GstMemory * mem,
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gint plane, GstEGLImage * eglimage, GstEGLImageCacheEntry ** cache_entry)
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{
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if (!(*cache_entry))
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*cache_entry = gst_egl_image_cache_entry_add (cache, mem);
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(*cache_entry)->eglimage[plane] = eglimage;
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}
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/**
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* gst_egl_image_cache_new:
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*
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* Creates an EGL image cache that holds references to EGL images
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* until the cache is freed. Each cache entry can be looked up by
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* GstMemory and holds one or more EGL images derived from it.
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*
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* Returns: (nullable): an empty #GstEGLImageCache or %NULL on failure
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*
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* Since: 1.26
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*/
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GstEGLImageCache *
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gst_egl_image_cache_new (void)
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{
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GstEGLImageCache *cache;
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cache = g_new0 (GstEGLImageCache, 1);
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cache->ref_count = 1;
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cache->hash_table = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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NULL, (GDestroyNotify) gst_egl_image_cache_entry_free);
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g_mutex_init (&cache->lock);
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return cache;
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}
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@ -0,0 +1,46 @@
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/*
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* GStreamer
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* Copyright (C) 2024 Pengutronix, Philipp Zabel <graphics@pengutronix.de>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef _GST_EGL_IMAGECACHE_H_
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#define _GST_EGL_IMAGECACHE_H_
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G_BEGIN_DECLS
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typedef struct _GstEGLImageCacheEntry GstEGLImageCacheEntry;
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typedef struct _GstEGLImageCache GstEGLImageCache;
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GST_GL_API
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GstEGLImageCache * gst_egl_image_cache_ref (GstEGLImageCache * cache);
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GST_GL_API
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void gst_egl_image_cache_unref (GstEGLImageCache * cache);
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GST_GL_API
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GstEGLImage * gst_egl_image_cache_lookup (GstEGLImageCache * cache, GstMemory * mem, gint plane, GstMemory ** previous_mem, GstEGLImageCacheEntry ** cache_entry);
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GST_GL_API
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void gst_egl_image_cache_store (GstEGLImageCache * cache, GstMemory * mem, gint plane, GstEGLImage * eglimage, GstEGLImageCacheEntry ** cache_entry);
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GST_GL_API
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GstEGLImageCache * gst_egl_image_cache_new (void);
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G_END_DECLS
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#endif /* _GST_EGL_IMAGECACHE_H_ */
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@ -32,6 +32,7 @@
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#if GST_GL_HAVE_PLATFORM_EGL
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#include "egl/gsteglimage.h"
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#include "egl/gsteglimage_private.h"
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#include "egl/gsteglimagecache.h"
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#include "egl/gstglmemoryegl.h"
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#include "egl/gstglcontext_egl.h"
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#endif
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@ -717,18 +718,6 @@ static const UploadMethod _gl_memory_upload = {
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#if GST_GL_HAVE_DMABUF
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typedef struct _GstEGLImageCacheEntry
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{
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GstEGLImage *eglimage[GST_VIDEO_MAX_PLANES];
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} GstEGLImageCacheEntry;
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typedef struct _GstEGLImageCache
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{
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gint ref_count;
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GHashTable *hash_table; /* for GstMemory -> GstEGLImageCacheEntry lookup */
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GMutex lock; /* protects hash_table */
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} GstEGLImageCache;
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struct DmabufUpload
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{
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GstGLUpload *upload;
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@ -747,112 +736,6 @@ struct DmabufUpload
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gpointer out_caps;
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};
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static void
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gst_egl_image_cache_ref (GstEGLImageCache * cache)
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{
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g_atomic_int_inc (&cache->ref_count);
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}
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static void
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gst_egl_image_cache_unref (GstEGLImageCache * cache)
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{
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if (g_atomic_int_dec_and_test (&cache->ref_count)) {
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g_hash_table_unref (cache->hash_table);
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g_mutex_clear (&cache->lock);
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g_free (cache);
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}
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}
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static void
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gst_egl_image_cache_entry_remove (GstEGLImageCache * cache, GstMiniObject * mem)
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{
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g_mutex_lock (&cache->lock);
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g_hash_table_remove (cache->hash_table, mem);
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g_mutex_unlock (&cache->lock);
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gst_egl_image_cache_unref (cache);
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}
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static GstEGLImageCacheEntry *
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gst_egl_image_cache_entry_new (GstEGLImageCache * cache, GstMemory * mem)
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{
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GstEGLImageCacheEntry *cache_entry;
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cache_entry = g_new0 (GstEGLImageCacheEntry, 1);
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gst_egl_image_cache_ref (cache);
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gst_mini_object_weak_ref (GST_MINI_OBJECT (mem),
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(GstMiniObjectNotify) gst_egl_image_cache_entry_remove, cache);
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g_mutex_lock (&cache->lock);
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g_hash_table_insert (cache->hash_table, mem, cache_entry);
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g_mutex_unlock (&cache->lock);
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return cache_entry;
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}
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static void
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gst_egl_image_cache_entry_free (GstEGLImageCacheEntry * cache_entry)
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{
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gint i;
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for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) {
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if (cache_entry->eglimage[i])
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gst_egl_image_unref (cache_entry->eglimage[i]);
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}
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g_free (cache_entry);
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}
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/*
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* Looks up a cache_entry for mem if mem is different from previous_mem.
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* If mem is the same as previous_mem, the costly lookup is skipped and the
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* provided (previous) cache_entry is used instead.
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*
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* Returns the cached eglimage for the given plane from the cache_entry, or
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* NULL. previous_mem is set to mem.
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*/
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static GstEGLImage *
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gst_egl_image_cache_lookup (GstEGLImageCache * cache, GstMemory * mem,
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gint plane, GstMemory ** previous_mem, GstEGLImageCacheEntry ** cache_entry)
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{
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if (mem != *previous_mem) {
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g_mutex_lock (&cache->lock);
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*cache_entry = g_hash_table_lookup (cache->hash_table, mem);
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g_mutex_unlock (&cache->lock);
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*previous_mem = mem;
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}
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if (*cache_entry)
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return (*cache_entry)->eglimage[plane];
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return NULL;
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}
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/*
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* Creates a new cache_entry for mem if no cache_entry is provided.
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* Stores the eglimage for the given plane in the cache_entry.
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*/
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static void
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gst_egl_image_cache_store (GstEGLImageCache * cache, GstMemory * mem,
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gint plane, GstEGLImage * eglimage, GstEGLImageCacheEntry ** cache_entry)
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{
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if (!(*cache_entry))
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*cache_entry = gst_egl_image_cache_entry_new (cache, mem);
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(*cache_entry)->eglimage[plane] = eglimage;
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}
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static GstEGLImageCache *
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gst_egl_image_cache_new (void)
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{
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GstEGLImageCache *cache;
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cache = g_new0 (GstEGLImageCache, 1);
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cache->ref_count = 1;
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cache->hash_table = g_hash_table_new_full (g_direct_hash, g_direct_equal,
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NULL, (GDestroyNotify) gst_egl_image_cache_entry_free);
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g_mutex_init (&cache->lock);
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return cache;
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}
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static GstStaticCaps _dma_buf_upload_caps =
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GST_STATIC_CAPS (GST_VIDEO_DMA_DRM_CAPS_MAKE ";"
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GST_VIDEO_CAPS_MAKE (GST_GL_MEMORY_VIDEO_FORMATS_STR));
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@ -551,6 +551,7 @@ if need_platform_egl != 'no'
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gl_egl_sources += files([
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'egl/gstegl.c',
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'egl/gsteglimage.c',
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'egl/gsteglimagecache.c',
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'egl/gstglcontext_egl.c',
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'egl/gstgldisplay_egl.c',
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'egl/gstglmemoryegl.c',
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