| /* |
| * GStreamer |
| * Copyright (C) 2012 Matthew Waters <> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gl.h" |
| #include "gstglbufferpool.h" |
| #include "gstglutils.h" |
| |
| #if GST_GL_HAVE_PLATFORM_EGL |
| #include <gst/gl/egl/gsteglimagememory.h> |
| #endif |
| |
| /** |
| * SECTION:gstglbufferpool |
| * @short_description: buffer pool for #GstGLMemory objects |
| * @see_also: #GstBufferPool, #GstGLMemory |
| * |
| * a #GstGLBufferPool is an object that allocates buffers with #GstGLMemory |
| * |
| * A #GstGLBufferPool is created with gst_gl_buffer_pool_new() |
| * |
| * #GstGLBufferPool implements the VideoMeta buffer pool option |
| * #GST_BUFFER_POOL_OPTION_VIDEO_META |
| */ |
| |
| /* bufferpool */ |
| struct _GstGLBufferPoolPrivate |
| { |
| GstAllocator *allocator; |
| GstAllocationParams params; |
| GstCaps *caps; |
| gint im_format; |
| GstVideoInfo info; |
| GstVideoAlignment valign; |
| gboolean add_videometa; |
| gboolean add_uploadmeta; |
| gboolean add_glsyncmeta; |
| gboolean want_eglimage; |
| GstBuffer *last_buffer; |
| }; |
| |
| static void gst_gl_buffer_pool_finalize (GObject * object); |
| |
| GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_BUFFER_POOL); |
| #define GST_CAT_DEFAULT GST_CAT_GL_BUFFER_POOL |
| |
| #define GST_GL_BUFFER_POOL_GET_PRIVATE(obj) \ |
| (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_GL_BUFFER_POOL, GstGLBufferPoolPrivate)) |
| |
| #define gst_gl_buffer_pool_parent_class parent_class |
| G_DEFINE_TYPE_WITH_CODE (GstGLBufferPool, gst_gl_buffer_pool, |
| GST_TYPE_BUFFER_POOL, GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_BUFFER_POOL, |
| "glbufferpool", 0, "GL Buffer Pool")); |
| |
| static const gchar ** |
| gst_gl_buffer_pool_get_options (GstBufferPool * pool) |
| { |
| static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META, |
| GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META, |
| GST_BUFFER_POOL_OPTION_GL_SYNC_META, |
| GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT, |
| NULL |
| }; |
| |
| return options; |
| } |
| |
| static gboolean |
| gst_gl_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config) |
| { |
| GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool); |
| GstGLBufferPoolPrivate *priv = glpool->priv; |
| GstVideoInfo info; |
| GstCaps *caps = NULL; |
| guint min_buffers, max_buffers; |
| GstAllocator *allocator = NULL; |
| GstAllocationParams alloc_params; |
| gboolean reset = TRUE; |
| gint p; |
| |
| if (!gst_buffer_pool_config_get_params (config, &caps, NULL, &min_buffers, |
| &max_buffers)) |
| goto wrong_config; |
| |
| if (caps == NULL) |
| goto no_caps; |
| |
| /* now parse the caps from the config */ |
| if (!gst_video_info_from_caps (&info, caps)) |
| goto wrong_caps; |
| |
| GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height, |
| caps); |
| |
| if (!gst_buffer_pool_config_get_allocator (config, &allocator, &alloc_params)) |
| goto wrong_config; |
| |
| if (priv->allocator) |
| gst_object_unref (priv->allocator); |
| |
| if (!allocator) { |
| gst_gl_memory_init (); |
| priv->allocator = gst_allocator_find (GST_GL_MEMORY_ALLOCATOR); |
| } else { |
| priv->allocator = gst_object_ref (allocator); |
| } |
| |
| priv->params = alloc_params; |
| |
| priv->im_format = GST_VIDEO_INFO_FORMAT (&info); |
| if (priv->im_format == -1) |
| goto unknown_format; |
| |
| if (priv->caps) |
| reset = !gst_caps_is_equal (priv->caps, caps); |
| |
| gst_caps_replace (&priv->caps, caps); |
| priv->info = info; |
| |
| priv->add_videometa = gst_buffer_pool_config_has_option (config, |
| GST_BUFFER_POOL_OPTION_VIDEO_META); |
| priv->add_uploadmeta = gst_buffer_pool_config_has_option (config, |
| GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META); |
| priv->add_glsyncmeta = gst_buffer_pool_config_has_option (config, |
| GST_BUFFER_POOL_OPTION_GL_SYNC_META); |
| |
| #if GST_GL_HAVE_PLATFORM_EGL |
| g_assert (priv->allocator != NULL); |
| priv->want_eglimage = |
| (g_strcmp0 (priv->allocator->mem_type, GST_EGL_IMAGE_MEMORY_TYPE) == 0); |
| #else |
| priv->want_eglimage = FALSE; |
| #endif |
| |
| if (gst_buffer_pool_config_has_option (config, |
| GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT)) { |
| |
| priv->add_videometa = TRUE; |
| |
| gst_buffer_pool_config_get_video_alignment (config, &priv->valign); |
| gst_video_info_align (&priv->info, &priv->valign); |
| |
| gst_buffer_pool_config_set_video_alignment (config, &priv->valign); |
| } else { |
| gst_video_alignment_reset (&priv->valign); |
| } |
| |
| if (reset) { |
| if (glpool->upload) |
| gst_object_unref (glpool->upload); |
| |
| glpool->upload = gst_gl_upload_meta_new (glpool->context); |
| } |
| |
| /* Recalulate the size and offset as we don't add padding between planes. */ |
| priv->info.size = 0; |
| for (p = 0; p < GST_VIDEO_INFO_N_PLANES (&priv->info); p++) { |
| priv->info.offset[p] = priv->info.size; |
| priv->info.size += |
| gst_gl_get_plane_data_size (&priv->info, &priv->valign, p); |
| } |
| |
| gst_buffer_pool_config_set_params (config, caps, priv->info.size, |
| min_buffers, max_buffers); |
| |
| return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config); |
| |
| /* ERRORS */ |
| wrong_config: |
| { |
| GST_WARNING_OBJECT (pool, "invalid config"); |
| return FALSE; |
| } |
| no_caps: |
| { |
| GST_WARNING_OBJECT (pool, "no caps in config"); |
| return FALSE; |
| } |
| wrong_caps: |
| { |
| GST_WARNING_OBJECT (pool, |
| "failed getting geometry from caps %" GST_PTR_FORMAT, caps); |
| return FALSE; |
| } |
| unknown_format: |
| { |
| GST_WARNING_OBJECT (glpool, "failed to get format from caps %" |
| GST_PTR_FORMAT, caps); |
| GST_ELEMENT_ERROR (glpool, RESOURCE, WRITE, |
| ("Failed to create output image buffer of %dx%d pixels", |
| priv->info.width, priv->info.height), |
| ("Invalid input caps %" GST_PTR_FORMAT, caps)); |
| return FALSE; |
| } |
| } |
| |
| static gboolean |
| gst_gl_buffer_pool_start (GstBufferPool * pool) |
| { |
| GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool); |
| GstGLBufferPoolPrivate *priv = glpool->priv; |
| |
| gst_gl_upload_meta_set_format (glpool->upload, &priv->info); |
| |
| return GST_BUFFER_POOL_CLASS (parent_class)->start (pool); |
| } |
| |
| /* This function handles GstBuffer creation */ |
| static GstFlowReturn |
| gst_gl_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer, |
| GstBufferPoolAcquireParams * params) |
| { |
| GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool); |
| GstGLBufferPoolPrivate *priv = glpool->priv; |
| GstVideoInfo *info; |
| GstVideoAlignment *valign; |
| GstBuffer *buf; |
| |
| info = &priv->info; |
| valign = &priv->valign; |
| |
| if (!(buf = gst_buffer_new ())) { |
| goto no_buffer; |
| } |
| #if GST_GL_HAVE_PLATFORM_EGL |
| if (priv->want_eglimage) { |
| /* alloc and append memories, also add video_meta and |
| * texture_upload_meta */ |
| if (!gst_egl_image_memory_setup_buffer (glpool->context, info, buf)) |
| goto egl_image_mem_create_failed; |
| |
| *buffer = buf; |
| |
| return GST_FLOW_OK; |
| } |
| #endif |
| |
| if (!gst_gl_memory_setup_buffer (glpool->context, &priv->params, info, |
| valign, buf)) |
| goto mem_create_failed; |
| |
| if (priv->add_uploadmeta) |
| gst_gl_upload_meta_add_to_buffer (glpool->upload, buf); |
| |
| if (priv->add_glsyncmeta) |
| gst_buffer_add_gl_sync_meta (glpool->context, buf); |
| |
| *buffer = buf; |
| |
| return GST_FLOW_OK; |
| |
| /* ERROR */ |
| no_buffer: |
| { |
| GST_WARNING_OBJECT (pool, "can't create image"); |
| return GST_FLOW_ERROR; |
| } |
| mem_create_failed: |
| { |
| GST_WARNING_OBJECT (pool, "Could not create GL Memory"); |
| return GST_FLOW_ERROR; |
| } |
| |
| #if GST_GL_HAVE_PLATFORM_EGL |
| egl_image_mem_create_failed: |
| { |
| GST_WARNING_OBJECT (pool, "Could not create EGLImage Memory"); |
| return GST_FLOW_ERROR; |
| } |
| #endif |
| } |
| |
| |
| static GstFlowReturn |
| gst_gl_buffer_pool_acquire_buffer (GstBufferPool * bpool, |
| GstBuffer ** buffer, GstBufferPoolAcquireParams * params) |
| { |
| GstFlowReturn ret = GST_FLOW_OK; |
| GstGLBufferPool *glpool = NULL; |
| |
| ret = |
| GST_BUFFER_POOL_CLASS |
| (gst_gl_buffer_pool_parent_class)->acquire_buffer (bpool, buffer, params); |
| if (ret != GST_FLOW_OK || !*buffer) |
| return ret; |
| |
| glpool = GST_GL_BUFFER_POOL (bpool); |
| |
| /* XXX: Don't return the memory we just rendered, glEGLImageTargetTexture2DOES() |
| * keeps the EGLImage unmappable until the next one is uploaded |
| */ |
| if (glpool->priv->want_eglimage && *buffer |
| && *buffer == glpool->priv->last_buffer) { |
| GstBuffer *oldbuf = *buffer; |
| |
| ret = |
| GST_BUFFER_POOL_CLASS |
| (gst_gl_buffer_pool_parent_class)->acquire_buffer (bpool, |
| buffer, params); |
| gst_object_replace ((GstObject **) & oldbuf->pool, (GstObject *) glpool); |
| gst_buffer_unref (oldbuf); |
| } |
| |
| return ret; |
| } |
| |
| /** |
| * gst_gl_buffer_pool_new: |
| * @context: the #GstGLContext to use |
| * |
| * Returns: a #GstBufferPool that allocates buffers with #GstGLMemory |
| */ |
| GstBufferPool * |
| gst_gl_buffer_pool_new (GstGLContext * context) |
| { |
| GstGLBufferPool *pool; |
| |
| pool = g_object_new (GST_TYPE_GL_BUFFER_POOL, NULL); |
| pool->context = gst_object_ref (context); |
| |
| GST_LOG_OBJECT (pool, "new GL buffer pool for context %" GST_PTR_FORMAT, |
| context); |
| |
| return GST_BUFFER_POOL_CAST (pool); |
| } |
| |
| /** |
| * gst_gl_buffer_pool_replace_last_buffer: |
| * @pool: a #GstGLBufferPool |
| * @buffer: a #GstBuffer |
| * |
| * Set @pool<-- -->s last buffer to @buffer for #GstGLPlatform<-- -->s that |
| * require it. |
| */ |
| void |
| gst_gl_buffer_pool_replace_last_buffer (GstGLBufferPool * pool, |
| GstBuffer * buffer) |
| { |
| g_return_if_fail (pool != NULL); |
| g_return_if_fail (buffer != NULL); |
| |
| gst_buffer_replace (&pool->priv->last_buffer, buffer); |
| } |
| |
| static void |
| gst_gl_buffer_pool_class_init (GstGLBufferPoolClass * klass) |
| { |
| GObjectClass *gobject_class = (GObjectClass *) klass; |
| GstBufferPoolClass *gstbufferpool_class = (GstBufferPoolClass *) klass; |
| |
| g_type_class_add_private (klass, sizeof (GstGLBufferPoolPrivate)); |
| |
| gobject_class->finalize = gst_gl_buffer_pool_finalize; |
| |
| gstbufferpool_class->get_options = gst_gl_buffer_pool_get_options; |
| gstbufferpool_class->set_config = gst_gl_buffer_pool_set_config; |
| gstbufferpool_class->alloc_buffer = gst_gl_buffer_pool_alloc; |
| gstbufferpool_class->acquire_buffer = gst_gl_buffer_pool_acquire_buffer; |
| gstbufferpool_class->start = gst_gl_buffer_pool_start; |
| } |
| |
| static void |
| gst_gl_buffer_pool_init (GstGLBufferPool * pool) |
| { |
| GstGLBufferPoolPrivate *priv = NULL; |
| |
| pool->priv = GST_GL_BUFFER_POOL_GET_PRIVATE (pool); |
| priv = pool->priv; |
| |
| priv->allocator = NULL; |
| priv->caps = NULL; |
| priv->im_format = GST_VIDEO_FORMAT_UNKNOWN; |
| priv->add_videometa = TRUE; |
| priv->add_glsyncmeta = FALSE; |
| priv->want_eglimage = FALSE; |
| priv->last_buffer = FALSE; |
| |
| gst_video_info_init (&priv->info); |
| gst_allocation_params_init (&priv->params); |
| } |
| |
| static void |
| gst_gl_buffer_pool_finalize (GObject * object) |
| { |
| GstGLBufferPool *pool = GST_GL_BUFFER_POOL_CAST (object); |
| GstGLBufferPoolPrivate *priv = pool->priv; |
| |
| GST_LOG_OBJECT (pool, "finalize GL buffer pool %p", pool); |
| |
| gst_buffer_replace (&pool->priv->last_buffer, NULL); |
| |
| if (priv->caps) |
| gst_caps_unref (priv->caps); |
| |
| if (pool->upload) |
| gst_object_unref (pool->upload); |
| |
| G_OBJECT_CLASS (gst_gl_buffer_pool_parent_class)->finalize (object); |
| |
| /* only release the context once all our memory have been deleted */ |
| if (pool->context) { |
| gst_object_unref (pool->context); |
| pool->context = NULL; |
| } |
| |
| if (priv->allocator) { |
| gst_object_unref (priv->allocator); |
| priv->allocator = NULL; |
| } |
| } |