gstreamer/subprojects/gst-plugins-bad/sys/kms/gstkmsbufferpool.c

227 lines
5.8 KiB
C

/*
* GStreamer
* Copyright (C) 2016 Igalia
*
* Authors:
* Víctor Manuel Jáquez Leal <vjaquez@igalia.com>
* Javier Martin <javiermartin@by.com.es>
*
* 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 <gst/video/gstvideometa.h>
#include "gstkmsbufferpool.h"
#include "gstkmsallocator.h"
GST_DEBUG_CATEGORY_STATIC (gst_kms_buffer_pool_debug);
#define GST_CAT_DEFAULT gst_kms_buffer_pool_debug
struct _GstKMSBufferPoolPrivate
{
GstVideoInfo vinfo;
GstAllocator *allocator;
gboolean add_videometa;
gboolean has_prime_export;
};
#define parent_class gst_kms_buffer_pool_parent_class
G_DEFINE_TYPE_WITH_CODE (GstKMSBufferPool, gst_kms_buffer_pool,
GST_TYPE_VIDEO_BUFFER_POOL, G_ADD_PRIVATE (GstKMSBufferPool);
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "kmsbufferpool", 0,
"KMS buffer pool"));
static const gchar **
gst_kms_buffer_pool_get_options (GstBufferPool * pool)
{
static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META,
GST_BUFFER_POOL_OPTION_KMS_BUFFER,
GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT,
NULL
};
return options;
}
static gboolean
gst_kms_buffer_pool_set_config (GstBufferPool * pool, GstStructure * config)
{
GstKMSBufferPool *vpool;
GstKMSBufferPoolPrivate *priv;
GstCaps *caps;
GstVideoInfo vinfo;
GstAllocator *allocator;
GstAllocationParams params;
vpool = GST_KMS_BUFFER_POOL_CAST (pool);
priv = vpool->priv;
if (!gst_buffer_pool_config_get_params (config, &caps, NULL, NULL, NULL))
goto wrong_config;
if (!caps)
goto no_caps;
/* now parse the caps from the config */
if (!gst_video_info_from_caps (&vinfo, caps))
goto wrong_caps;
allocator = NULL;
gst_buffer_pool_config_get_allocator (config, &allocator, &params);
/* not our allocator, not our buffers */
if (allocator && GST_IS_KMS_ALLOCATOR (allocator)) {
if (priv->allocator)
gst_object_unref (priv->allocator);
priv->allocator = gst_object_ref (allocator);
}
if (!priv->allocator)
goto no_allocator;
priv->vinfo = vinfo;
/* enable metadata based on config of the pool */
priv->add_videometa = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
priv->has_prime_export = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_KMS_PRIME_EXPORT);
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;
}
no_allocator:
{
GST_WARNING_OBJECT (pool, "no valid allocator in pool");
return FALSE;
}
}
static GstFlowReturn
gst_kms_buffer_pool_alloc_buffer (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstKMSBufferPool *vpool;
GstKMSBufferPoolPrivate *priv;
GstVideoInfo *info;
GstMemory *mem;
vpool = GST_KMS_BUFFER_POOL_CAST (pool);
priv = vpool->priv;
info = &priv->vinfo;
mem = gst_kms_allocator_bo_alloc (priv->allocator, info);
if (!mem)
goto no_memory;
if (vpool->priv->has_prime_export) {
GstMemory *dmabufmem;
dmabufmem = gst_kms_allocator_dmabuf_export (priv->allocator, mem);
if (dmabufmem)
mem = dmabufmem;
else
GST_WARNING_OBJECT (pool, "Failed to export DMABuf from Dumb buffer.");
}
*buffer = gst_buffer_new ();
gst_buffer_append_memory (*buffer, mem);
if (priv->add_videometa) {
GST_DEBUG_OBJECT (pool, "adding GstVideoMeta");
gst_buffer_add_video_meta_full (*buffer, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (info),
GST_VIDEO_INFO_WIDTH (info), GST_VIDEO_INFO_HEIGHT (info),
GST_VIDEO_INFO_N_PLANES (info), info->offset, info->stride);
}
return GST_FLOW_OK;
/* ERROR */
no_memory:
{
GST_WARNING_OBJECT (pool, "can't create memory");
return GST_FLOW_ERROR;
}
}
static void
gst_kms_buffer_pool_finalize (GObject * object)
{
GstKMSBufferPool *pool;
GstKMSBufferPoolPrivate *priv;
pool = GST_KMS_BUFFER_POOL (object);
priv = pool->priv;
if (priv->allocator)
gst_object_unref (priv->allocator);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_kms_buffer_pool_init (GstKMSBufferPool * pool)
{
pool->priv = gst_kms_buffer_pool_get_instance_private (pool);
}
static void
gst_kms_buffer_pool_class_init (GstKMSBufferPoolClass * klass)
{
GObjectClass *gobject_class;
GstBufferPoolClass *gstbufferpool_class;
gobject_class = (GObjectClass *) klass;
gstbufferpool_class = (GstBufferPoolClass *) klass;
gobject_class->finalize = gst_kms_buffer_pool_finalize;
gstbufferpool_class->get_options = gst_kms_buffer_pool_get_options;
gstbufferpool_class->set_config = gst_kms_buffer_pool_set_config;
gstbufferpool_class->alloc_buffer = gst_kms_buffer_pool_alloc_buffer;
}
GstBufferPool *
gst_kms_buffer_pool_new (void)
{
GstBufferPool *pool;
pool = g_object_new (GST_TYPE_KMS_BUFFER_POOL, NULL);
gst_object_ref_sink (pool);
return pool;
}