gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/va/gstvapool.c

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/* GStreamer
* Copyright (C) 2020 Igalia, S.L.
* Author: Víctor Jáquez <vjaquez@igalia.com>
*
* 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.
*/
/**
* SECTION:gstvapool
* @title: GstVaPool
* @short_description: VA Buffer pool
* @sources:
* - gstvapool.h
*
* @GstVaPool is a buffer pool for VA allocators.
*
* Since: 1.22
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvapool.h"
GST_DEBUG_CATEGORY_STATIC (gst_va_pool_debug);
#define GST_CAT_DEFAULT gst_va_pool_debug
/**
* GstVaPool:
*
* A buffer pool that uses either #GstVaAllocator or
* #GstVaDmabufAllocator to pre-allocate and recycle #GstBuffers.
*
* Since: 1.22
*/
typedef struct _GstVaPool GstVaPool;
typedef struct _GstVaPoolClass GstVaPoolClass;
struct _GstVaPool
{
GstBufferPool parent;
GstVideoInfo alloc_info;
GstVideoInfo caps_info;
GstAllocator *allocator;
gboolean force_videometa;
gboolean add_videometa;
gint crop_left;
gint crop_top;
gboolean starting;
};
struct _GstVaPoolClass
{
GstBufferPoolClass parent_class;
};
#define gst_va_pool_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstVaPool, gst_va_pool, GST_TYPE_BUFFER_POOL,
GST_DEBUG_CATEGORY_INIT (gst_va_pool_debug, "vapool", 0, "VA Pool"));
static const gchar **
gst_va_pool_get_options (GstBufferPool * pool)
{
static const gchar *options[] = { GST_BUFFER_POOL_OPTION_VIDEO_META, NULL };
return options;
}
static inline gboolean
gst_buffer_pool_config_get_va_allocation_params (GstStructure * config,
guint32 * usage_hint, GstVaFeature * use_derived)
{
if (!gst_structure_get (config, "usage-hint", G_TYPE_UINT, usage_hint, NULL)) {
*usage_hint = VA_SURFACE_ATTRIB_USAGE_HINT_GENERIC;
}
if (!gst_structure_get (config, "use-derived", GST_TYPE_VA_FEATURE,
use_derived, NULL)) {
*use_derived = GST_VA_FEATURE_AUTO;
}
return TRUE;
}
static inline gboolean
gst_buffer_pool_config_get_va_alignment (GstStructure * config,
GstVideoAlignment * align)
{
return gst_structure_get (config,
"va-padding-top", G_TYPE_UINT, &align->padding_top,
"va-padding-bottom", G_TYPE_UINT, &align->padding_bottom,
"va-padding-left", G_TYPE_UINT, &align->padding_left,
"va-padding-right", G_TYPE_UINT, &align->padding_right, NULL);
}
static gboolean
gst_va_pool_set_config (GstBufferPool * pool, GstStructure * config)
{
GstAllocator *allocator;
GstCaps *caps;
GstVaPool *vpool = GST_VA_POOL (pool);
GstVideoAlignment video_align = { 0, };
GstVideoInfo caps_info, alloc_info;
gint width, height;
guint i, min_buffers, max_buffers;
guint32 usage_hint;
GstVaFeature use_derived;
gboolean has_alignment;
if (!gst_buffer_pool_config_get_params (config, &caps, NULL, &min_buffers,
&max_buffers))
goto wrong_config;
if (!caps)
goto no_caps;
if (!gst_video_info_from_caps (&caps_info, caps))
goto wrong_caps;
if (!gst_buffer_pool_config_get_allocator (config, &allocator, NULL))
goto wrong_config;
if (!(allocator && (GST_IS_VA_DMABUF_ALLOCATOR (allocator)
|| GST_IS_VA_ALLOCATOR (allocator))))
goto wrong_config;
if (!gst_buffer_pool_config_get_va_allocation_params (config, &usage_hint,
&use_derived))
goto wrong_config;
width = GST_VIDEO_INFO_WIDTH (&caps_info);
height = GST_VIDEO_INFO_HEIGHT (&caps_info);
GST_LOG_OBJECT (vpool, "%dx%d | %" GST_PTR_FORMAT, width, height, caps);
/* enable metadata based on config of the pool */
vpool->add_videometa = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
/* parse extra alignment info */
has_alignment = gst_buffer_pool_config_get_va_alignment (config,
&video_align);
if (has_alignment) {
width += video_align.padding_left + video_align.padding_right;
height += video_align.padding_bottom + video_align.padding_top;
if (video_align.padding_left > 0)
vpool->crop_left = video_align.padding_left;
if (video_align.padding_top > 0)
vpool->crop_top = video_align.padding_top;
}
/* update allocation info with aligned size */
alloc_info = caps_info;
GST_VIDEO_INFO_WIDTH (&alloc_info) = width;
GST_VIDEO_INFO_HEIGHT (&alloc_info) = height;
if (GST_IS_VA_DMABUF_ALLOCATOR (allocator)) {
if (!gst_va_dmabuf_allocator_set_format (allocator, &alloc_info,
usage_hint))
goto failed_allocator;
} else if (GST_IS_VA_ALLOCATOR (allocator)) {
if (!gst_va_allocator_set_format (allocator, &alloc_info, usage_hint,
use_derived))
goto failed_allocator;
}
gst_object_replace ((GstObject **) & vpool->allocator,
GST_OBJECT (allocator));
vpool->caps_info = caps_info;
vpool->alloc_info = alloc_info;
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&caps_info); i++) {
if (GST_VIDEO_INFO_PLANE_STRIDE (&caps_info, i) !=
GST_VIDEO_INFO_PLANE_STRIDE (&alloc_info, i) ||
GST_VIDEO_INFO_PLANE_OFFSET (&caps_info, i) !=
GST_VIDEO_INFO_PLANE_OFFSET (&alloc_info, i)) {
GST_INFO_OBJECT (vpool, "Video meta is required in buffer.");
vpool->force_videometa = TRUE;
break;
}
}
gst_buffer_pool_config_set_params (config, caps,
GST_VIDEO_INFO_SIZE (&alloc_info), min_buffers, max_buffers);
return GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config);
/* ERRORS */
wrong_config:
{
GST_WARNING_OBJECT (vpool, "invalid config");
return FALSE;
}
no_caps:
{
GST_WARNING_OBJECT (vpool, "no caps in config");
return FALSE;
}
wrong_caps:
{
GST_WARNING_OBJECT (vpool,
"failed getting geometry from caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
failed_allocator:
{
GST_WARNING_OBJECT (vpool, "Failed to set format to allocator");
return FALSE;
}
}
static GstFlowReturn
gst_va_pool_alloc (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstBuffer *buf;
GstVaPool *vpool = GST_VA_POOL (pool);
buf = gst_buffer_new ();
if (GST_IS_VA_DMABUF_ALLOCATOR (vpool->allocator)) {
if (vpool->starting) {
if (!gst_va_dmabuf_allocator_setup_buffer (vpool->allocator, buf))
goto no_memory;
} else if (!gst_va_dmabuf_allocator_prepare_buffer (vpool->allocator, buf)) {
if (!gst_va_dmabuf_allocator_setup_buffer (vpool->allocator, buf))
goto no_memory;
}
} else if (GST_IS_VA_ALLOCATOR (vpool->allocator)) {
if (vpool->starting) {
if (!gst_va_allocator_setup_buffer (vpool->allocator, buf))
goto no_memory;
} else if (!gst_va_allocator_prepare_buffer (vpool->allocator, buf)) {
if (!gst_va_allocator_setup_buffer (vpool->allocator, buf))
goto no_memory;
}
} else
goto no_memory;
if (vpool->add_videometa) {
if (vpool->crop_left > 0 || vpool->crop_top > 0) {
GstVideoCropMeta *crop_meta;
/* For video crop, its video meta's width and height should be
the full size of uncropped resolution. */
gst_buffer_add_video_meta_full (buf, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (&vpool->alloc_info),
GST_VIDEO_INFO_WIDTH (&vpool->alloc_info),
GST_VIDEO_INFO_HEIGHT (&vpool->alloc_info),
GST_VIDEO_INFO_N_PLANES (&vpool->alloc_info),
vpool->alloc_info.offset, vpool->alloc_info.stride);
crop_meta = gst_buffer_add_video_crop_meta (buf);
crop_meta->x = vpool->crop_left;
crop_meta->y = vpool->crop_top;
crop_meta->width = GST_VIDEO_INFO_WIDTH (&vpool->caps_info);
crop_meta->height = GST_VIDEO_INFO_HEIGHT (&vpool->caps_info);
} else {
/* GstVaAllocator may update offset/stride given the physical
* memory */
gst_buffer_add_video_meta_full (buf, GST_VIDEO_FRAME_FLAG_NONE,
GST_VIDEO_INFO_FORMAT (&vpool->caps_info),
GST_VIDEO_INFO_WIDTH (&vpool->caps_info),
GST_VIDEO_INFO_HEIGHT (&vpool->caps_info),
GST_VIDEO_INFO_N_PLANES (&vpool->caps_info),
vpool->alloc_info.offset, vpool->alloc_info.stride);
}
}
*buffer = buf;
return GST_FLOW_OK;
/* ERROR */
no_memory:
{
gst_buffer_unref (buf);
GST_WARNING_OBJECT (vpool, "can't create memory");
return GST_FLOW_ERROR;
}
}
static gboolean
gst_va_pool_start (GstBufferPool * pool)
{
GstVaPool *vpool = GST_VA_POOL (pool);
gboolean ret;
vpool->starting = TRUE;
ret = GST_BUFFER_POOL_CLASS (parent_class)->start (pool);
vpool->starting = FALSE;
return ret;
}
static gboolean
gst_va_pool_stop (GstBufferPool * pool)
{
GstVaPool *vpool = GST_VA_POOL (pool);
gboolean ret;
ret = GST_BUFFER_POOL_CLASS (parent_class)->stop (pool);
if (GST_IS_VA_DMABUF_ALLOCATOR (vpool->allocator))
gst_va_dmabuf_allocator_flush (vpool->allocator);
else if (GST_IS_VA_ALLOCATOR (vpool->allocator))
gst_va_allocator_flush (vpool->allocator);
return ret;
}
static void
gst_va_pool_dispose (GObject * object)
{
GstVaPool *pool = GST_VA_POOL (object);
GST_LOG_OBJECT (pool, "finalize video buffer pool %p", pool);
gst_clear_object (&pool->allocator);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_va_pool_class_init (GstVaPoolClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBufferPoolClass *gstbufferpool_class = GST_BUFFER_POOL_CLASS (klass);
gobject_class->dispose = gst_va_pool_dispose;
gstbufferpool_class->get_options = gst_va_pool_get_options;
gstbufferpool_class->set_config = gst_va_pool_set_config;
gstbufferpool_class->alloc_buffer = gst_va_pool_alloc;
gstbufferpool_class->start = gst_va_pool_start;
gstbufferpool_class->stop = gst_va_pool_stop;
}
static void
gst_va_pool_init (GstVaPool * self)
{
}
/**
* gst_va_pool_new:
*
* Returns: A new #GstBufferPool for VA allocators.
*
* Since: 1.22
*/
GstBufferPool *
gst_va_pool_new (void)
{
GstVaPool *pool;
pool = g_object_new (GST_TYPE_VA_POOL, NULL);
gst_object_ref_sink (pool);
GST_LOG_OBJECT (pool, "new va video buffer pool %p", pool);
return GST_BUFFER_POOL_CAST (pool);
}
/**
* gst_buffer_pool_config_set_va_allocation_params:
* @config: the #GstStructure with the pool's configuration.
* @usage_hint: the VA usage hint for new VASurfaceID.
* @use_derived: a #GstVaFeature for derived mapping (only used when
* VA allocator).
*
* Sets the usage hint for the buffers handled by the buffer pool.
*
* Since: 1.22
*/
void
gst_buffer_pool_config_set_va_allocation_params (GstStructure * config,
guint usage_hint, GstVaFeature use_derived)
{
gst_structure_set (config, "usage-hint", G_TYPE_UINT, usage_hint,
"use-derived", GST_TYPE_VA_FEATURE, use_derived, NULL);
}
/**
* gst_buffer_pool_config_set_va_alignment:
* @config: the #GstStructure with the pool's configuration.
* @align: a #GstVideoAlignment
*
* Video alignment is not handled as expected by VA since it uses
* opaque surfaces, not directly mappable memory. Still, decoders
* might need to request bigger surfaces for coded size rather than
* display sizes. This method will set the coded size to bufferpool's
* configuration, out of the typical video aligment.
*
* Since: 1.20.2
*/
void
gst_buffer_pool_config_set_va_alignment (GstStructure * config,
const GstVideoAlignment * align)
{
gst_structure_set (config,
"va-padding-top", G_TYPE_UINT, align->padding_top,
"va-padding-bottom", G_TYPE_UINT, align->padding_bottom,
"va-padding-left", G_TYPE_UINT, align->padding_left,
"va-padding-right", G_TYPE_UINT, align->padding_right, NULL);
}
/**
* gst_va_pool_requires_video_meta:
* @pool: the #GstBufferPool
*
* Retuns: %TRUE if @pool always add #GstVideoMeta to its
* buffers. Otherwise, %FALSE.
*
* Since: 1.22
*/
gboolean
gst_va_pool_requires_video_meta (GstBufferPool * pool)
{
g_return_val_if_fail (GST_IS_VA_POOL (pool), FALSE);
return GST_VA_POOL (pool)->force_videometa;
}
/**
* gst_va_pool_new_with_config:
* @caps: the #GstCaps of the buffers handled by the new pool.
* @size: the size of the frames to hold.
* @min_buffers: minimum number of frames to create.
* @max_buffers: maximum number of frames to create.
* @usage_hint: VA usage hint
* @use_derived: a #GstVaFeature for derived mapping (only used when
* VA allocator).
* @allocator: the VA allocator to use.
* @alloc_params: #GstAllocationParams to use.
*
* Returns: a new #GstBufferPool that handles VASurfacesID-backed
* buffers. If the pool cannot be configured correctly, %NULL is
* returned.
*
* Since: 1.22
*/
GstBufferPool *
gst_va_pool_new_with_config (GstCaps * caps, guint size, guint min_buffers,
guint max_buffers, guint usage_hint, GstVaFeature use_derived,
GstAllocator * allocator, GstAllocationParams * alloc_params)
{
GstBufferPool *pool;
GstStructure *config;
pool = gst_va_pool_new ();
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min_buffers,
max_buffers);
gst_buffer_pool_config_set_va_allocation_params (config, usage_hint,
use_derived);
gst_buffer_pool_config_set_allocator (config, allocator, alloc_params);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
if (!gst_buffer_pool_set_config (pool, config))
gst_clear_object (&pool);
return pool;
}