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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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416 lines
12 KiB
C
416 lines
12 KiB
C
/*
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* GStreamer
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* Copyright (C) 2012 Matthew Waters <>
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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 "gstglbufferpool.h"
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#include "gstglmemory.h"
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#include "gstglsyncmeta.h"
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#include "gstglutils.h"
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/**
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* SECTION:gstglbufferpool
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* @title: GstGLBufferPool
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* @short_description: buffer pool for #GstGLBaseMemory objects
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* @see_also: #GstBufferPool, #GstGLBaseMemory, #GstGLMemory
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*
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* a #GstGLBufferPool is an object that allocates buffers with #GstGLBaseMemory
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*
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* A #GstGLBufferPool is created with gst_gl_buffer_pool_new()
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*
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* #GstGLBufferPool implements the VideoMeta buffer pool option
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* %GST_BUFFER_POOL_OPTION_VIDEO_META, the VideoAligment buffer pool option
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* %GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT as well as the OpenGL specific
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* %GST_BUFFER_POOL_OPTION_GL_SYNC_META buffer pool option.
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*/
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/* bufferpool */
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struct _GstGLBufferPoolPrivate
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{
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GstAllocator *allocator;
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GstGLVideoAllocationParams *gl_params;
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GstCaps *caps;
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gboolean add_videometa;
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gboolean add_glsyncmeta;
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};
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static void gst_gl_buffer_pool_finalize (GObject * object);
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_BUFFER_POOL);
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#define GST_CAT_DEFAULT GST_CAT_GL_BUFFER_POOL
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#define _init \
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GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_BUFFER_POOL, "glbufferpool", 0, \
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"GL Buffer Pool");
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#define gst_gl_buffer_pool_parent_class parent_class
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G_DEFINE_TYPE_WITH_CODE (GstGLBufferPool, gst_gl_buffer_pool,
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GST_TYPE_BUFFER_POOL, G_ADD_PRIVATE (GstGLBufferPool)
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_init);
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static const gchar **
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gst_gl_buffer_pool_get_options (GstBufferPool * pool)
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{
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static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META,
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GST_BUFFER_POOL_OPTION_GL_SYNC_META,
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GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT,
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GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_2D,
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GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_RECTANGLE,
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NULL
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};
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return options;
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}
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static gboolean
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gst_gl_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
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{
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GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool);
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GstGLBufferPoolPrivate *priv = glpool->priv;
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GstVideoInfo info;
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GstCaps *caps = NULL;
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guint min_buffers, max_buffers;
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guint max_align, n;
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GstAllocator *allocator = NULL;
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GstAllocationParams alloc_params;
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GstGLTextureTarget tex_target;
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gboolean ret = TRUE;
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gint p;
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if (!gst_buffer_pool_config_get_params (config, &caps, NULL, &min_buffers,
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&max_buffers))
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goto wrong_config;
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if (caps == NULL)
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goto no_caps;
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/* now parse the caps from the config */
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if (!gst_video_info_from_caps (&info, caps))
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goto wrong_caps;
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GST_LOG_OBJECT (pool, "%dx%d, caps %" GST_PTR_FORMAT, info.width, info.height,
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caps);
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if (!gst_buffer_pool_config_get_allocator (config, &allocator, &alloc_params))
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goto wrong_config;
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gst_caps_replace (&priv->caps, caps);
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if (priv->allocator)
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gst_object_unref (priv->allocator);
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if (allocator) {
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if (!GST_IS_GL_MEMORY_ALLOCATOR (allocator)) {
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gst_object_unref (allocator);
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goto wrong_allocator;
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} else {
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priv->allocator = gst_object_ref (allocator);
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}
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} else {
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priv->allocator =
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GST_ALLOCATOR (gst_gl_memory_allocator_get_default (glpool->context));
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g_assert (priv->allocator);
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}
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priv->add_videometa = gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_META);
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priv->add_glsyncmeta = gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_GL_SYNC_META);
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if (priv->gl_params)
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gst_gl_allocation_params_free ((GstGLAllocationParams *) priv->gl_params);
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priv->gl_params = (GstGLVideoAllocationParams *)
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gst_buffer_pool_config_get_gl_allocation_params (config);
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if (!priv->gl_params)
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priv->gl_params = gst_gl_video_allocation_params_new (glpool->context,
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&alloc_params, &info, -1, NULL, 0, 0);
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max_align = alloc_params.align;
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if (gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT)) {
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priv->add_videometa = TRUE;
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gst_buffer_pool_config_get_video_alignment (config,
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priv->gl_params->valign);
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for (n = 0; n < GST_VIDEO_MAX_PLANES; ++n)
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max_align |= priv->gl_params->valign->stride_align[n];
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for (n = 0; n < GST_VIDEO_MAX_PLANES; ++n)
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priv->gl_params->valign->stride_align[n] = max_align;
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gst_video_info_align (priv->gl_params->v_info, priv->gl_params->valign);
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gst_buffer_pool_config_set_video_alignment (config,
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priv->gl_params->valign);
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}
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if (alloc_params.align < max_align) {
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GST_WARNING_OBJECT (pool, "allocation params alignment %u is smaller "
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"than the max specified video stride alignment %u, fixing",
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(guint) alloc_params.align, max_align);
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alloc_params.align = max_align;
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gst_buffer_pool_config_set_allocator (config, allocator, &alloc_params);
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if (priv->gl_params->parent.alloc_params)
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gst_allocation_params_free (priv->gl_params->parent.alloc_params);
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priv->gl_params->parent.alloc_params =
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gst_allocation_params_copy (&alloc_params);
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}
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{
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GstStructure *s = gst_caps_get_structure (caps, 0);
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const gchar *target_str = gst_structure_get_string (s, "texture-target");
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gboolean multiple_texture_targets = FALSE;
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tex_target = priv->gl_params->target;
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if (target_str)
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tex_target = gst_gl_texture_target_from_string (target_str);
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if (gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_2D)) {
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if (tex_target && tex_target != GST_GL_TEXTURE_TARGET_2D)
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multiple_texture_targets = TRUE;
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tex_target = GST_GL_TEXTURE_TARGET_2D;
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}
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if (gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_RECTANGLE)) {
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if (tex_target && tex_target != GST_GL_TEXTURE_TARGET_RECTANGLE)
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multiple_texture_targets = TRUE;
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tex_target = GST_GL_TEXTURE_TARGET_RECTANGLE;
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}
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if (gst_buffer_pool_config_has_option (config,
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GST_BUFFER_POOL_OPTION_GL_TEXTURE_TARGET_EXTERNAL_OES)) {
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if (tex_target && tex_target != GST_GL_TEXTURE_TARGET_EXTERNAL_OES)
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multiple_texture_targets = TRUE;
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tex_target = GST_GL_TEXTURE_TARGET_EXTERNAL_OES;
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}
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if (!tex_target)
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tex_target = GST_GL_TEXTURE_TARGET_2D;
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if (multiple_texture_targets) {
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GST_WARNING_OBJECT (pool, "Multiple texture targets configured either "
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"through caps or buffer pool options");
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ret = FALSE;
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}
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priv->gl_params->target = tex_target;
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}
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/* Recalulate the size and offset as we don't add padding between planes. */
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priv->gl_params->v_info->size = 0;
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for (p = 0; p < GST_VIDEO_INFO_N_PLANES (priv->gl_params->v_info); p++) {
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priv->gl_params->v_info->offset[p] = priv->gl_params->v_info->size;
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priv->gl_params->v_info->size +=
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gst_gl_get_plane_data_size (priv->gl_params->v_info,
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priv->gl_params->valign, p);
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}
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gst_buffer_pool_config_set_params (config, caps,
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priv->gl_params->v_info->size, min_buffers, max_buffers);
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return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config) && ret;
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/* ERRORS */
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wrong_config:
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{
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GST_WARNING_OBJECT (pool, "invalid config");
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return FALSE;
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}
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no_caps:
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{
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GST_WARNING_OBJECT (pool, "no caps in config");
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return FALSE;
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}
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wrong_caps:
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{
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GST_WARNING_OBJECT (pool,
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"failed getting geometry from caps %" GST_PTR_FORMAT, caps);
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return FALSE;
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}
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wrong_allocator:
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{
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GST_WARNING_OBJECT (pool, "Incorrect allocator type for this pool");
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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_buffer_pool_start (GstBufferPool * pool)
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{
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return GST_BUFFER_POOL_CLASS (parent_class)->start (pool);
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}
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/* This function handles GstBuffer creation */
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static GstFlowReturn
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gst_gl_buffer_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
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GstBufferPoolAcquireParams * params)
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{
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GstGLMemoryAllocator *alloc;
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GstGLBufferPool *glpool = GST_GL_BUFFER_POOL_CAST (pool);
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GstGLBufferPoolPrivate *priv = glpool->priv;
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GstBuffer *buf;
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if (!(buf = gst_buffer_new ())) {
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goto no_buffer;
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}
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alloc = GST_GL_MEMORY_ALLOCATOR (priv->allocator);
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if (!gst_gl_memory_setup_buffer (alloc, buf, priv->gl_params, NULL, NULL, 0))
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goto mem_create_failed;
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if (priv->add_glsyncmeta)
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gst_buffer_add_gl_sync_meta (glpool->context, buf);
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*buffer = buf;
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return GST_FLOW_OK;
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/* ERROR */
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no_buffer:
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{
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GST_WARNING_OBJECT (pool, "can't create image");
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return GST_FLOW_ERROR;
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}
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mem_create_failed:
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{
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GST_WARNING_OBJECT (pool, "Could not create GL Memory");
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return GST_FLOW_ERROR;
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}
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}
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/**
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* gst_gl_buffer_pool_new:
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* @context: the #GstGLContext to use
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*
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* Returns: a #GstBufferPool that allocates buffers with #GstGLMemory
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*/
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GstBufferPool *
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gst_gl_buffer_pool_new (GstGLContext * context)
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{
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GstGLBufferPool *pool;
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pool = g_object_new (GST_TYPE_GL_BUFFER_POOL, NULL);
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gst_object_ref_sink (pool);
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pool->context = gst_object_ref (context);
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GST_LOG_OBJECT (pool, "new GL buffer pool for context %" GST_PTR_FORMAT,
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context);
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return GST_BUFFER_POOL_CAST (pool);
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}
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static void
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gst_gl_buffer_pool_class_init (GstGLBufferPoolClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstBufferPoolClass *gstbufferpool_class = (GstBufferPoolClass *) klass;
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gobject_class->finalize = gst_gl_buffer_pool_finalize;
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gstbufferpool_class->get_options = gst_gl_buffer_pool_get_options;
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gstbufferpool_class->set_config = gst_gl_buffer_pool_set_config;
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gstbufferpool_class->alloc_buffer = gst_gl_buffer_pool_alloc;
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gstbufferpool_class->start = gst_gl_buffer_pool_start;
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}
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static void
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gst_gl_buffer_pool_init (GstGLBufferPool * pool)
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{
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GstGLBufferPoolPrivate *priv = NULL;
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pool->priv = gst_gl_buffer_pool_get_instance_private (pool);
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priv = pool->priv;
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priv->allocator = NULL;
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priv->caps = NULL;
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priv->add_videometa = TRUE;
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priv->add_glsyncmeta = FALSE;
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}
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static void
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gst_gl_buffer_pool_finalize (GObject * object)
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{
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GstGLBufferPool *pool = GST_GL_BUFFER_POOL_CAST (object);
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GstGLBufferPoolPrivate *priv = pool->priv;
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GST_LOG_OBJECT (pool, "finalize GL buffer pool %p", pool);
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if (priv->caps)
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gst_caps_unref (priv->caps);
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G_OBJECT_CLASS (gst_gl_buffer_pool_parent_class)->finalize (object);
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/* only release the context once all our memory have been deleted */
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if (pool->context) {
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gst_object_unref (pool->context);
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pool->context = NULL;
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}
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if (priv->allocator) {
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gst_object_unref (priv->allocator);
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priv->allocator = NULL;
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}
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if (priv->gl_params)
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gst_gl_allocation_params_free ((GstGLAllocationParams *) priv->gl_params);
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priv->gl_params = NULL;
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}
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/**
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* gst_buffer_pool_config_get_gl_allocation_params:
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* @config: a buffer pool config
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*
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* Returns: (transfer full): the currently set #GstGLAllocationParams or %NULL
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*/
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GstGLAllocationParams *
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gst_buffer_pool_config_get_gl_allocation_params (GstStructure * config)
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{
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GstGLAllocationParams *ret;
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if (!gst_structure_get (config, "gl-allocation-params",
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GST_TYPE_GL_ALLOCATION_PARAMS, &ret, NULL))
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ret = NULL;
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return ret;
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}
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/**
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* gst_buffer_pool_config_set_gl_allocation_params:
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* @config: a buffer pool config
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* @params: (transfer none): a #GstGLAllocationParams
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*
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* Sets @params on @config
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*/
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void
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gst_buffer_pool_config_set_gl_allocation_params (GstStructure * config,
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GstGLAllocationParams * params)
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{
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g_return_if_fail (config != NULL);
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g_return_if_fail (params != NULL);
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gst_structure_set (config, "gl-allocation-params",
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GST_TYPE_GL_ALLOCATION_PARAMS, params, NULL);
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}
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