gldownload: import DMABufs from downstream pool

* if downstream provides us with a pool that can allocate DMA buffers,
  gldownload wraps it into a GL buffer pool that uses
  glEGLImageTargetTexture2DOES() to import dmabuf into textures
* upstream GL elements can allocate from that pool
* gldownload unwraps DMA buffers from incoming GL buffers and passes
  them downstream

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6792>
This commit is contained in:
Jakub Adam 2024-09-27 14:17:34 +02:00 committed by Nicolas Dufresne
parent 270e186311
commit 188b626ffc
5 changed files with 630 additions and 18 deletions

View file

@ -0,0 +1,422 @@
/*
* GStreamer
* Copyright © 2024 Advanced Micro Devices, Inc.
*
* 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 <ext/gl/gstgldmabufbufferpool.h>
#include <gst/allocators/gstdmabuf.h>
#include <gst/gl/gstglcontext.h>
#include <gst/gl/gstglfuncs.h>
#include <gst/gl/gstglmemory.h>
#include <gst/gl/gstglsyncmeta.h>
#include <gst/gl/egl/gsteglimage.h>
#define GST_GL_DMABUF_EGLIMAGE "gst.gl.dmabuf.eglimage"
typedef struct _GstGLDMABufBufferPoolPrivate
{
GstBufferPool *dmabuf_pool;
GstGLMemoryAllocator *allocator;
GstGLVideoAllocationParams *glparams;
gboolean add_glsyncmeta;
} GstGLDMABufBufferPoolPrivate;
GST_DEBUG_CATEGORY_STATIC (GST_CAT_GL_DMABUF_BUFFER_POOL);
#define GST_CAT_DEFAULT GST_CAT_GL_DMABUF_BUFFER_POOL
#define gst_gl_dmabuf_buffer_pool_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGLDMABufBufferPool, gst_gl_dmabuf_buffer_pool,
GST_TYPE_GL_BUFFER_POOL, G_ADD_PRIVATE (GstGLDMABufBufferPool)
GST_DEBUG_CATEGORY_INIT (GST_CAT_GL_DMABUF_BUFFER_POOL,
"gldmabufbufferpool", 0, "GL-DMABuf Buffer Pool"));
static gboolean
gst_gl_dmabuf_buffer_pool_set_config (GstBufferPool * pool,
GstStructure * config)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (pool);
GstAllocator *allocator = NULL;
GstAllocationParams alloc_params;
GstGLAllocationParams *glparams;
GstVideoAlignment video_align = { 0 };
GstCaps *caps;
guint size;
guint min;
guint max;
guint i;
if (!gst_buffer_pool_config_get_params (config, &caps, &size, &min, &max)) {
goto wrong_config;
}
if (!gst_buffer_pool_config_get_allocator (config, &allocator, &alloc_params)) {
goto wrong_config;
}
gst_clear_object (&self->priv->allocator);
if (allocator) {
if (!GST_IS_GL_MEMORY_ALLOCATOR (allocator)) {
gst_clear_object (&allocator);
goto wrong_allocator;
} else {
self->priv->allocator = gst_object_ref (allocator);
}
} else {
self->priv->allocator =
gst_gl_memory_allocator_get_default (GST_GL_BUFFER_POOL
(pool)->context);
}
/*
* This alignment is needed by nearly all AMD GPUs and should work fine on
* Mali as well. To my knowledge there is no API to query it at runtime, so
* it has to be hardcoded here. Users of the pool can still override the
* values with GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT added to the config.
*/
for (i = 0; i != GST_VIDEO_MAX_PLANES; ++i) {
video_align.stride_align[i] = 256 - 1;
}
if (!gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT)) {
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_video_alignment (config, &video_align);
}
gst_buffer_pool_config_get_video_alignment (config, &video_align);
alloc_params.align = MAX (alloc_params.align, video_align.stride_align[0]);
gst_buffer_pool_config_set_allocator (config, allocator, &alloc_params);
glparams = gst_buffer_pool_config_get_gl_allocation_params (config);
if (glparams) {
g_clear_pointer (&glparams->alloc_params, gst_allocation_params_free);
glparams->alloc_params = gst_allocation_params_copy (&alloc_params);
gst_buffer_pool_config_set_gl_allocation_params (config, glparams);
g_clear_pointer (&glparams, gst_gl_allocation_params_free);
}
self->priv->add_glsyncmeta = gst_buffer_pool_config_has_option (config,
GST_BUFFER_POOL_OPTION_GL_SYNC_META);
if (!GST_BUFFER_POOL_CLASS (parent_class)->set_config (pool, config)) {
return FALSE;
}
g_clear_pointer ((GstGLAllocationParams **) & self->priv->glparams,
gst_gl_allocation_params_free);
self->priv->glparams = (GstGLVideoAllocationParams *)
gst_gl_buffer_pool_get_gl_allocation_params (GST_GL_BUFFER_POOL (pool));
self->priv->glparams->parent.alloc_flags |=
GST_GL_ALLOCATION_PARAMS_ALLOC_FLAG_WRAP_GPU_HANDLE;
/* Now configure the dma-buf pool. */
config = gst_buffer_pool_get_config (self->priv->dmabuf_pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_video_alignment (config, &video_align);
return gst_buffer_pool_set_config (self->priv->dmabuf_pool, config);
wrong_config:
{
GST_WARNING_OBJECT (pool, "Incorrect config for this pool");
return FALSE;
}
wrong_allocator:
{
GST_WARNING_OBJECT (pool, "Incorrect allocator type for this pool");
return FALSE;
}
}
static gboolean
gst_gl_dmabuf_buffer_pool_start (GstBufferPool * pool)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (pool);
if (!gst_buffer_pool_set_active (self->priv->dmabuf_pool, TRUE)) {
return FALSE;
}
return GST_BUFFER_POOL_CLASS (parent_class)->start (pool);
}
static gboolean
gst_gl_dmabuf_buffer_pool_stop (GstBufferPool * pool)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (pool);
if (!gst_buffer_pool_set_active (self->priv->dmabuf_pool, FALSE)) {
return FALSE;
}
return GST_BUFFER_POOL_CLASS (parent_class)->stop (pool);
}
typedef struct
{
GstEGLImage *eglimage[GST_VIDEO_MAX_PLANES];
gpointer gpuhandle[GST_VIDEO_MAX_PLANES];
guint n_planes;
} WrapDMABufData;
static void
_wrap_dmabuf_eglimage (GstGLContext * context, gpointer data)
{
WrapDMABufData *d = data;
const GstGLFuncs *gl = context->gl_vtable;
GLuint tex_ids[GST_VIDEO_MAX_PLANES];
guint i;
gl->GenTextures (d->n_planes, tex_ids);
for (i = 0; i < d->n_planes; ++i) {
gl->BindTexture (GL_TEXTURE_2D, tex_ids[i]);
gl->EGLImageTargetTexture2D (GL_TEXTURE_2D,
gst_egl_image_get_image (d->eglimage[i]));
d->gpuhandle[i] = GUINT_TO_POINTER (tex_ids[i]);
}
}
static GstFlowReturn
gst_gl_dmabuf_buffer_pool_alloc_buffer (GstBufferPool * pool,
GstBuffer ** buffer, GstBufferPoolAcquireParams * params)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (pool);
GstGLBufferPool *glpool = GST_GL_BUFFER_POOL (pool);
GstBuffer *buf;
if (!(buf = gst_buffer_new ())) {
goto no_buffer;
}
if (self->priv->add_glsyncmeta) {
gst_buffer_add_gl_sync_meta (glpool->context, buf);
}
*buffer = buf;
return GST_FLOW_OK;
/* ERROR */
no_buffer:
{
GST_WARNING_OBJECT (self, "Could not create DMABuf buffer");
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_gl_dmabuf_buffer_pool_acquire_buffer (GstBufferPool * pool,
GstBuffer ** buffer, GstBufferPoolAcquireParams * params)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (pool);
GstGLBufferPool *glpool = GST_GL_BUFFER_POOL (pool);
GstVideoInfo *v_info = self->priv->glparams->v_info;
GstFlowReturn ret;
GstBuffer *dmabuf;
GstBuffer *buf;
WrapDMABufData data;
guint i;
ret = gst_buffer_pool_acquire_buffer (self->priv->dmabuf_pool, &dmabuf, NULL);
if (ret != GST_FLOW_OK) {
goto no_buffer;
}
data.n_planes = GST_VIDEO_INFO_N_PLANES (v_info);
for (i = 0; i < data.n_planes; ++i) {
guint mem_idx, length;
gsize skip;
GstMemory *dmabufmem;
if (!gst_buffer_find_memory (dmabuf, GST_VIDEO_INFO_PLANE_OFFSET (v_info,
i), 1, &mem_idx, &length, &skip)) {
GST_WARNING_OBJECT (self, "Could not find memory for plane %d", i);
return GST_FLOW_ERROR;
}
dmabufmem = gst_buffer_peek_memory (dmabuf, mem_idx);
g_assert (gst_is_dmabuf_memory (dmabufmem));
data.eglimage[i] = gst_egl_image_from_dmabuf (glpool->context,
gst_dmabuf_memory_get_fd (dmabufmem), v_info, i, skip);
}
gst_gl_context_thread_add (glpool->context, _wrap_dmabuf_eglimage, &data);
ret = GST_BUFFER_POOL_CLASS (parent_class)->acquire_buffer (pool, &buf,
params);
if (ret != GST_FLOW_OK) {
return GST_FLOW_ERROR;
}
if (!gst_gl_memory_setup_buffer (self->priv->allocator, buf,
self->priv->glparams, NULL, data.gpuhandle, data.n_planes)) {
goto mem_create_failed;
}
for (i = 0; i < data.n_planes; ++i) {
GstMemory *mem = gst_buffer_peek_memory (buf, i);
/* Unset wrapped flag, we want the texture be freed with the memory. */
GST_GL_MEMORY_CAST (mem)->texture_wrapped = FALSE;
gst_mini_object_set_qdata (GST_MINI_OBJECT (mem),
g_quark_from_static_string (GST_GL_DMABUF_EGLIMAGE),
data.eglimage[i], (GDestroyNotify) gst_egl_image_unref);
}
gst_buffer_add_parent_buffer_meta (buf, dmabuf);
gst_clear_buffer (&dmabuf);
*buffer = buf;
return GST_FLOW_OK;
/* ERROR */
no_buffer:
{
GST_WARNING_OBJECT (self, "Could not create DMABuf buffer");
return GST_FLOW_ERROR;
}
mem_create_failed:
{
GST_WARNING_OBJECT (self, "Could not create GL Memory");
return GST_FLOW_ERROR;
}
}
static void
gst_gl_dmabuf_buffer_pool_reset_buffer (GstBufferPool * pool,
GstBuffer * buffer)
{
gst_buffer_remove_all_memory (buffer);
GST_BUFFER_POOL_CLASS (parent_class)->reset_buffer (pool, buffer);
}
gboolean
gst_is_gl_dmabuf_buffer (GstBuffer * buffer)
{
return GST_IS_GL_DMABUF_BUFFER_POOL (buffer->pool);
}
GstBuffer *
gst_gl_dmabuf_buffer_unwrap (GstBuffer * buffer)
{
GstGLDMABufBufferPool *pool;
GstParentBufferMeta *meta;
GstBuffer *wrapped_dmabuf = NULL;
g_return_val_if_fail (gst_is_gl_dmabuf_buffer (buffer), NULL);
pool = GST_GL_DMABUF_BUFFER_POOL (buffer->pool);
if (gst_buffer_peek_memory (buffer, 0)->allocator !=
GST_ALLOCATOR (pool->priv->allocator)) {
return NULL;
}
meta = gst_buffer_get_parent_buffer_meta (buffer);
if (meta && meta->buffer) {
wrapped_dmabuf = gst_buffer_ref (meta->buffer);
gst_buffer_remove_meta (buffer, (GstMeta *) meta);
gst_buffer_copy_into (wrapped_dmabuf, buffer, GST_BUFFER_COPY_FLAGS |
GST_BUFFER_COPY_TIMESTAMPS | GST_BUFFER_COPY_META, 0, -1);
}
return wrapped_dmabuf;
}
GstBufferPool *
gst_gl_dmabuf_buffer_pool_new (GstGLContext * context,
GstBufferPool * dmabuf_pool)
{
GstGLDMABufBufferPool *pool;
pool = g_object_new (GST_TYPE_GL_DMABUF_BUFFER_POOL, NULL);
gst_object_ref_sink (pool);
GST_GL_BUFFER_POOL (pool)->context = gst_object_ref (context);
pool->priv->dmabuf_pool = gst_object_ref (dmabuf_pool);
GST_LOG_OBJECT (pool, "new GL-DMABuf buffer pool for pool %" GST_PTR_FORMAT
" and context %" GST_PTR_FORMAT, dmabuf_pool, context);
return GST_BUFFER_POOL_CAST (pool);
}
static void
gst_gl_dmabuf_buffer_pool_init (GstGLDMABufBufferPool * pool)
{
pool->priv = gst_gl_dmabuf_buffer_pool_get_instance_private (pool);
}
static void
gst_gl_dmabuf_buffer_pool_finalize (GObject * object)
{
GstGLDMABufBufferPool *self = GST_GL_DMABUF_BUFFER_POOL (object);
GST_LOG_OBJECT (self, "finalize GL-DMABuf buffer pool");
gst_clear_object (&self->priv->dmabuf_pool);
g_clear_pointer ((GstGLAllocationParams **) & self->priv->glparams,
gst_gl_allocation_params_free);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_gl_dmabuf_buffer_pool_class_init (GstGLDMABufBufferPoolClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstBufferPoolClass *gstbufferpool_class = (GstBufferPoolClass *) klass;
gobject_class->finalize = gst_gl_dmabuf_buffer_pool_finalize;
gstbufferpool_class->set_config = gst_gl_dmabuf_buffer_pool_set_config;
gstbufferpool_class->alloc_buffer = gst_gl_dmabuf_buffer_pool_alloc_buffer;
gstbufferpool_class->acquire_buffer =
gst_gl_dmabuf_buffer_pool_acquire_buffer;
gstbufferpool_class->reset_buffer = gst_gl_dmabuf_buffer_pool_reset_buffer;
gstbufferpool_class->start = gst_gl_dmabuf_buffer_pool_start;
gstbufferpool_class->stop = gst_gl_dmabuf_buffer_pool_stop;
}

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@ -0,0 +1,61 @@
/*
* GStreamer
* Copyright © 2024 Advanced Micro Devices, Inc.
*
* 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.
*/
#ifndef _GST_GL_DMABUF_BUFFER_POOL_H_
#define _GST_GL_DMABUF_BUFFER_POOL_H_
#include <gst/gl/gstglbufferpool.h>
G_BEGIN_DECLS
typedef struct _GstGLDMABufBufferPoolPrivate GstGLDMABufBufferPoolPrivate;
/**
* GST_TYPE_GL_DMABUF_BUFFER_POOL:
*
* Since: 1.26
*/
#define GST_TYPE_GL_DMABUF_BUFFER_POOL (gst_gl_dmabuf_buffer_pool_get_type())
G_DECLARE_FINAL_TYPE (GstGLDMABufBufferPool, gst_gl_dmabuf_buffer_pool, GST, GL_DMABUF_BUFFER_POOL, GstGLBufferPool)
/**
* GstGLDMABufBufferPool:
*
* Opaque GstGLDMABufBufferPool struct
*
* Since: 1.26
*/
struct _GstGLDMABufBufferPool
{
GstGLBufferPool parent;
/*< private >*/
GstGLDMABufBufferPoolPrivate *priv;
};
GstBufferPool *gst_gl_dmabuf_buffer_pool_new (GstGLContext * context, GstBufferPool * dmabuf_pool);
gboolean gst_is_gl_dmabuf_buffer (GstBuffer * buffer);
GstBuffer *gst_gl_dmabuf_buffer_unwrap (GstBuffer * buffer);
G_END_DECLS
#endif /* _GST_GL_DMABUF_BUFFER_POOL_H_ */

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@ -25,6 +25,7 @@
#include <gst/gl/gl.h>
#include <gst/gl/gstglfuncs.h>
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
#include <gstgldmabufbufferpool.h>
#include <gst/gl/egl/gsteglimage.h>
#include <gst/allocators/gstdmabuf.h>
#endif
@ -899,6 +900,8 @@ gst_gl_download_element_stop (GstBaseTransform * bt)
dl->dmabuf_allocator = NULL;
}
gst_clear_object (&dl->foreign_dmabuf_pool);
return TRUE;
}
@ -939,16 +942,82 @@ gst_gl_download_element_set_caps (GstBaseTransform * bt, GstCaps * in_caps,
return TRUE;
}
static GstCaps *
_set_caps_features (const GstCaps * caps, const gchar * feature_name)
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
static gboolean
_convert_dma_drm (GstGLContext * context, GstStructure * s)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
const GValue *fmtval = gst_structure_get_value (s, "format");
for (i = 0; i < n; i++)
gst_caps_set_features (tmp, i,
if (!fmtval) {
return FALSE;
}
if (G_VALUE_HOLDS_STRING (fmtval) &&
g_str_equal (g_value_get_string (fmtval), "DMA_DRM")) {
const GValue *drmval = gst_structure_get_value (s, "drm-format");
GValue newfmtval = G_VALUE_INIT;
if (context && gst_gl_dma_buf_transform_drm_formats_to_gst_formats (context,
drmval, 0, &newfmtval)) {
gst_structure_set_value (s, "format", &newfmtval);
gst_structure_remove_field (s, "drm-format");
g_value_unset (&newfmtval);
} else {
return FALSE;
}
} else {
GValue drmfmtval = G_VALUE_INIT;
if (!context) {
gst_structure_remove_field (s, "drm-format");
} else if (gst_gl_dma_buf_transform_gst_formats_to_drm_formats (context,
fmtval, 0, &drmfmtval)) {
gst_structure_set_value (s, "drm-format", &drmfmtval);
g_value_unset (&drmfmtval);
} else {
return FALSE;
}
gst_structure_set (s, "format", G_TYPE_STRING,
gst_video_format_to_string (GST_VIDEO_FORMAT_DMA_DRM), NULL);
}
return TRUE;
}
#endif
static GstCaps *
_set_caps_features (GstGLContext * context, const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_new_empty ();
guint n = gst_caps_get_size (caps);
guint i = 0;
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
const gboolean new_feature_is_dmabuf =
g_str_equal (feature_name, GST_CAPS_FEATURE_MEMORY_DMABUF);
#endif
for (i = 0; i < n; i++) {
GstStructure *s = gst_structure_copy (gst_caps_get_structure (caps, i));
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
gboolean old_feature_is_dmabuf =
gst_caps_features_contains (gst_caps_get_features (caps, i),
GST_CAPS_FEATURE_MEMORY_DMABUF);
if (new_feature_is_dmabuf != old_feature_is_dmabuf) {
if (!_convert_dma_drm (context, s)) {
gst_clear_structure (&s);
continue;
}
}
#endif
gst_caps_append_structure_full (tmp, s,
gst_caps_features_new_single_static_str (feature_name));
}
return tmp;
}
@ -969,32 +1038,43 @@ static GstCaps *
gst_gl_download_element_transform_caps (GstBaseTransform * bt,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstGLBaseFilter *base_filter = GST_GL_BASE_FILTER (bt);
GstGLContext *context;
GstCaps *result, *tmp;
if (base_filter->display && !gst_gl_base_filter_find_gl_context (base_filter))
return NULL;
context = gst_gl_base_filter_get_gl_context (base_filter);
if (direction == GST_PAD_SRC) {
GstCaps *sys_caps = gst_caps_simplify (_set_caps_features (caps,
GstCaps *sys_caps = gst_caps_simplify (_set_caps_features (context, caps,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY));
tmp = _set_caps_features (sys_caps, GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
tmp = _set_caps_features (context, sys_caps,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
tmp = gst_caps_merge (tmp, sys_caps);
} else {
GstCaps *newcaps;
tmp = gst_caps_ref (caps);
#if GST_GL_HAVE_PLATFORM_EGL && defined(HAVE_NVMM)
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_NVMM);
newcaps = _set_caps_features (context, caps, GST_CAPS_FEATURE_MEMORY_NVMM);
_remove_field (newcaps, "texture-target");
// FIXME: RGBA-only?
tmp = gst_caps_merge (tmp, newcaps);
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_DMABUF);
newcaps =
_set_caps_features (context, caps, GST_CAPS_FEATURE_MEMORY_DMABUF);
_remove_field (newcaps, "texture-target");
tmp = gst_caps_merge (tmp, newcaps);
#endif
newcaps = _set_caps_features (caps, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
newcaps = _set_caps_features (context, caps,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
_remove_field (newcaps, "texture-target");
tmp = gst_caps_merge (tmp, newcaps);
}
@ -1292,6 +1372,16 @@ gst_gl_download_element_prepare_output_buffer (GstBaseTransform * bt,
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
if (gst_is_gl_dmabuf_buffer (inbuf)) {
GstBuffer *wrapped_dmabuf = gst_gl_dmabuf_buffer_unwrap (inbuf);
if (wrapped_dmabuf) {
*outbuf = wrapped_dmabuf;
return GST_FLOW_OK;
}
}
if (dl->mode == GST_GL_DOWNLOAD_MODE_DMABUF_EXPORTS) {
GstBuffer *buffer = _try_export_dmabuf (dl, inbuf);
@ -1306,14 +1396,15 @@ gst_gl_download_element_prepare_output_buffer (GstBaseTransform * bt,
*outbuf = buffer;
} else {
GstCaps *src_caps;
GstCapsFeatures *features;
GstCaps *sink_caps, *src_caps;
gboolean ret;
src_caps = gst_pad_get_current_caps (bt->srcpad);
src_caps = gst_caps_make_writable (src_caps);
features = gst_caps_get_features (src_caps, 0);
gst_caps_features_remove (features, GST_CAPS_FEATURE_MEMORY_DMABUF);
sink_caps = gst_pad_get_current_caps (bt->sinkpad);
src_caps = _set_caps_features (context, sink_caps,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY);
_remove_field (src_caps, "texture-target");
gst_caps_unref (sink_caps);
g_atomic_int_set (&dl->try_dmabuf_exports, FALSE);
dl->mode = GST_GL_DOWNLOAD_MODE_PBO_TRANSFERS;
@ -1374,6 +1465,27 @@ gst_gl_download_element_decide_allocation (GstBaseTransform * trans,
download->add_videometa = FALSE;
}
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
{
GstCaps *caps;
const GstCapsFeatures *features;
gst_clear_object (&download->foreign_dmabuf_pool);
gst_query_parse_allocation (query, &caps, NULL);
features = gst_caps_get_features (caps, 0);
if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_DMABUF) &&
gst_query_get_n_allocation_pools (query) > 0) {
gst_query_parse_nth_allocation_pool (query, 0,
&download->foreign_dmabuf_pool, NULL, NULL, NULL);
gst_query_remove_nth_allocation_pool (query, 0);
}
}
#endif
return GST_BASE_TRANSFORM_CLASS (parent_class)->decide_allocation (trans,
query);
}
@ -1446,6 +1558,16 @@ gst_gl_download_element_propose_allocation (GstBaseTransform * bt,
}
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_DMABUF
if (!pool && GST_GL_DOWNLOAD_ELEMENT (bt)->foreign_dmabuf_pool) {
pool = gst_gl_dmabuf_buffer_pool_new (context,
GST_GL_DOWNLOAD_ELEMENT (bt)->foreign_dmabuf_pool);
GST_LOG_OBJECT (bt, "offering dma-buf-backed GL buffer pool");
}
#endif
if (!pool) {
pool = gst_gl_buffer_pool_new (context);
}

View file

@ -54,6 +54,7 @@ struct _GstGLDownloadElement
GstGlDownloadMode mode;
gboolean try_dmabuf_exports;
GstAllocator * dmabuf_allocator;
GstBufferPool * foreign_dmabuf_pool;
gboolean add_videometa;
};

View file

@ -93,6 +93,12 @@ if png_dep.found()
endif
endif
if glconf.get('GST_GL_HAVE_DMABUF', 0) == 1
opengl_sources += [
'gstgldmabufbufferpool.c',
]
endif
if glconf.get('GST_GL_HAVE_WINDOW_COCOA', 0) == 1
corefoundation_dep = dependency('appleframeworks', modules : ['CoreFoundation'], required : false)
foundation_dep = dependency('appleframeworks', modules : ['Foundation'], required : false)