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kmssink: add plugin and sink element

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This is simple video sink that use libdrm/libkms API to render frames.

The element uses planes to render through drmModeSetPlane().

It has been tested in an Exynos4412 board and in a Freescale I.MX6 board.

https://bugzilla.gnome.org/show_bug.cgi?id=761059
This commit is contained in:
Víctor Manuel Jáquez Leal 2016-01-20 12:00:51 +01:00
parent 65770c2af9
commit 620e1d2fcd
11 changed files with 1960 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
configure.ac
View file

@ -2322,6 +2322,13 @@ AG_GST_CHECK_FEATURE(KATE, [Kate], kate, [
AC_SUBST(TIGER_LIBS)
],,,[AM_CONDITIONAL(USE_TIGER, false)])
dnl *** kms ***
translit(dnm, m, l) AM_CONDITIONAL(USE_KMS, true)
AG_GST_CHECK_FEATURE(KMS, [drm/kms libraries], kms, [
AG_GST_PKG_CHECK_MODULES(GST_VIDEO, gstreamer-video-1.0)
PKG_CHECK_MODULES([DRM], [libdrm libkms], HAVE_KMS=yes, HAVE_KMS=no)
])
dnl *** ladspa ***
translit(dnm, m, l) AM_CONDITIONAL(USE_LADSPA, true)
AG_GST_CHECK_FEATURE(LADSPA, [ladspa], ladspa, [
@ -3370,6 +3377,7 @@ AM_CONDITIONAL(USE_GTK3, false)
AM_CONDITIONAL(USE_GTK3_GL, false)
AM_CONDITIONAL(USE_HLS, false)
AM_CONDITIONAL(USE_KATE, false)
AM_CONDITIONAL(USE_KMS, false)
AM_CONDITIONAL(USE_TIGER, false)
AM_CONDITIONAL(USE_LADSPA, false)
AM_CONDITIONAL(USE_LV2, false)
@ -3616,6 +3624,7 @@ sys/dshowsrcwrapper/Makefile
sys/dshowvideosink/Makefile
sys/dvb/Makefile
sys/fbdev/Makefile
sys/kms/Makefile
sys/linsys/Makefile
sys/nvenc/Makefile
sys/opensles/Makefile

10
sys/Makefile.am
View file

@ -64,6 +64,12 @@ else
FBDEV_DIR=
endif
if USE_KMS
KMS_DIR=kms
else
KMS_DIR=
endif
if USE_DVB
DVB_DIR=dvb
else
@ -148,9 +154,9 @@ else
TINYALSA_DIR=
endif
SUBDIRS = $(ACM_DIR) $(ANDROID_MEDIA_DIR) $(APPLE_MEDIA_DIR) $(AVC_DIR) $(BLUEZ_DIR) $(D3DVIDEOSINK_DIR) $(DECKLINK_DIR) $(DIRECTSOUND_DIR) $(WINKS_DIR) $(DVB_DIR) $(FBDEV_DIR) $(LINSYS_DIR) $(OPENSLES_DIR) $(PVR_DIR) $(SHM_DIR) $(UVCH264_DIR) $(VCD_DIR) $(VDPAU_DIR) $(WININET_DIR) $(WINSCREENCAP_DIR) $(WASAPI_DIR) $(NVENC_DIR) $(TINYALSA_DIR)
SUBDIRS = $(ACM_DIR) $(ANDROID_MEDIA_DIR) $(APPLE_MEDIA_DIR) $(AVC_DIR) $(BLUEZ_DIR) $(D3DVIDEOSINK_DIR) $(DECKLINK_DIR) $(DIRECTSOUND_DIR) $(WINKS_DIR) $(DVB_DIR) $(FBDEV_DIR) $(KMS_DIR) $(LINSYS_DIR) $(OPENSLES_DIR) $(PVR_DIR) $(SHM_DIR) $(UVCH264_DIR) $(VCD_DIR) $(VDPAU_DIR) $(WININET_DIR) $(WINSCREENCAP_DIR) $(WASAPI_DIR) $(NVENC_DIR) $(TINYALSA_DIR)
DIST_SUBDIRS = acmenc acmmp3dec androidmedia applemedia applemedia-nonpublic avc bluez d3dvideosink decklink directsound dvb linsys fbdev dshowdecwrapper dshowsrcwrapper dshowvideosink \
DIST_SUBDIRS = acmenc acmmp3dec androidmedia applemedia applemedia-nonpublic avc bluez d3dvideosink decklink directsound dvb linsys fbdev kms dshowdecwrapper dshowsrcwrapper dshowvideosink \
opensles pvr2d shm uvch264 vcd vdpau wasapi wininet winks winscreencap \
nvenc tinyalsa

39
sys/kms/Makefile.am Normal file
View file

@ -0,0 +1,39 @@
plugin_LTLIBRARIES = libgstkmssink.la
libgstkmssink_la_SOURCES = \
gstkmssink.c \
gstkmsutils.c \
gstkmsallocator.c \
gstkmsbufferpool.c \
$(NUL)
libgstkmssink_la_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \
$(GST_BASE_CFLAGS) \
$(GST_VIDEO_CFLAGS) \
$(GST_CFLAGS) \
$(DRM_CFLAGS) \
$(NULL)
libgstkmssink_la_LIBADD = \
$(GST_PLUGINS_BASE_LIBS) \
$(GST_BASE_LIBS) \
$(GST_VIDEO_LIBS) \
$(GST_LIBS) \
$(DRM_LIBS) \
$(NULL)
libgstkmssink_la_LDFLAGS = \
$(GST_PLUGIN_LDFLAGS) \
$(NULL)
libgstkmssink_la_LIBTOOLFLAGS = \
$(GST_PLUGIN_LIBTOOLFLAGS) \
$(NULL)
noinst_HEADERS = \
gstkmssink.h \
gstkmsutils.h \
gstkmsallocator.h \
gstkmsbufferpool.h \
$(NULL)

339
sys/kms/gstkmsallocator.c Normal file
View file

@ -0,0 +1,339 @@
/* 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 <xf86drm.h>
#include <xf86drmMode.h>
#include <string.h>
#include <unistd.h>
#include "gstkmsallocator.h"
#include "gstkmsutils.h"
#define GST_CAT_DEFAULT kmsallocator_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define GST_KMS_MEMORY_TYPE "KMSMemory"
struct _GstKMSAllocatorPrivate
{
int fd;
struct kms_driver *driver;
};
#define parent_class gst_kms_allocator_parent_class
G_DEFINE_TYPE_WITH_CODE (GstKMSAllocator, gst_kms_allocator, GST_TYPE_ALLOCATOR,
G_ADD_PRIVATE (GstKMSAllocator);
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "kmsallocator", 0,
"KMS allocator"));
enum
{
PROP_DRM_FD = 1,
PROP_N,
};
static GParamSpec *g_props[PROP_N] = { NULL, };
gboolean
gst_is_kms_memory (GstMemory * mem)
{
return gst_memory_is_type (mem, GST_KMS_MEMORY_TYPE);
}
guint32
gst_kms_memory_get_fb_id (GstMemory * mem)
{
if (!gst_is_kms_memory (mem))
return 0;
return ((GstKMSMemory *) mem)->fb_id;
}
static gboolean
ensure_kms_driver (GstKMSAllocator * alloc)
{
GstKMSAllocatorPrivate *priv;
int err;
priv = alloc->priv;
if (priv->driver)
return TRUE;
if (priv->fd < 0)
return FALSE;
err = kms_create (priv->fd, &priv->driver);
if (err) {
GST_ERROR_OBJECT (alloc, "Could not create KMS driver: %s",
strerror (-err));
return FALSE;
}
return TRUE;
}
static void
gst_kms_allocator_free (GstAllocator * allocator, GstMemory * mem)
{
GstKMSAllocator *alloc;
GstKMSMemory *kmsmem;
alloc = GST_KMS_ALLOCATOR (allocator);
kmsmem = (GstKMSMemory *) mem;
if (kmsmem->fb_id)
drmModeRmFB (alloc->priv->fd, kmsmem->fb_id);
if (ensure_kms_driver (alloc) && kmsmem->bo)
kms_bo_destroy (&kmsmem->bo);
g_slice_free (GstKMSMemory, kmsmem);
}
static void
gst_kms_allocator_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstKMSAllocator *alloc;
alloc = GST_KMS_ALLOCATOR (object);
switch (prop_id) {
case PROP_DRM_FD:{
int fd = g_value_get_int (value);
if (fd > -1)
alloc->priv->fd = dup (fd);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_allocator_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstKMSAllocator *alloc;
alloc = GST_KMS_ALLOCATOR (object);
switch (prop_id) {
case PROP_DRM_FD:
g_value_set_int (value, alloc->priv->fd);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_allocator_finalize (GObject * obj)
{
GstKMSAllocator *alloc;
alloc = GST_KMS_ALLOCATOR (obj);
if (alloc->priv->driver)
kms_destroy (&alloc->priv->driver);
if (alloc->priv->fd > -1)
close (alloc->priv->fd);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_kms_allocator_class_init (GstKMSAllocatorClass * klass)
{
GObjectClass *gobject_class;
GstAllocatorClass *allocator_class;
allocator_class = GST_ALLOCATOR_CLASS (klass);
gobject_class = G_OBJECT_CLASS (klass);
allocator_class->free = gst_kms_allocator_free;
gobject_class->set_property = gst_kms_allocator_set_property;
gobject_class->get_property = gst_kms_allocator_get_property;
gobject_class->finalize = gst_kms_allocator_finalize;
g_props[PROP_DRM_FD] = g_param_spec_int ("drm-fd", "DRM fd",
"DRM file descriptor", -1, G_MAXINT, -1,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT);
g_object_class_install_properties (gobject_class, PROP_N, g_props);
}
static gpointer
gst_kms_memory_map (GstMemory * mem, gsize maxsize, GstMapFlags flags)
{
GstKMSMemory *kmsmem;
int err;
gpointer out;
if (!ensure_kms_driver ((GstKMSAllocator *) mem->allocator))
return NULL;
kmsmem = (GstKMSMemory *) mem;
if (!kmsmem->bo)
return NULL;
out = NULL;
err = kms_bo_map (kmsmem->bo, &out);
if (err) {
GST_ERROR ("could not map memory: %s %d", strerror (-err), err);
return NULL;
}
return out;
}
static void
gst_kms_memory_unmap (GstMemory * mem)
{
GstKMSMemory *kmsmem;
if (!ensure_kms_driver ((GstKMSAllocator *) mem->allocator))
return;
kmsmem = (GstKMSMemory *) mem;
if (kmsmem->bo)
kms_bo_unmap (kmsmem->bo);
}
static void
gst_kms_allocator_init (GstKMSAllocator * allocator)
{
GstAllocator *alloc;
alloc = GST_ALLOCATOR_CAST (allocator);
allocator->priv = gst_kms_allocator_get_instance_private (allocator);
allocator->priv->fd = -1;
alloc->mem_type = GST_KMS_MEMORY_TYPE;
alloc->mem_map = gst_kms_memory_map;
alloc->mem_unmap = gst_kms_memory_unmap;
/* Use the default, fallback copy function */
GST_OBJECT_FLAG_SET (allocator, GST_ALLOCATOR_FLAG_CUSTOM_ALLOC);
}
GstAllocator *
gst_kms_allocator_new (int fd)
{
return g_object_new (GST_TYPE_KMS_ALLOCATOR, "name",
"KMSMemory::allocator", "drm-fd", fd, NULL);
}
static gboolean
gst_kms_allocator_add_fb (GstKMSAllocator * alloc, GstKMSMemory * kmsmem,
GstVideoInfo * vinfo)
{
int i, ret;
guint32 w, h, fmt, bo_handles[4] = { 0, };
guint32 offsets[4], pitches[4];
if (kmsmem->fb_id)
return TRUE;
w = GST_VIDEO_INFO_WIDTH (vinfo);
h = GST_VIDEO_INFO_HEIGHT (vinfo);
fmt = gst_drm_format_from_video (GST_VIDEO_INFO_FORMAT (vinfo));
if (kmsmem->bo) {
kms_bo_get_prop (kmsmem->bo, KMS_HANDLE, &bo_handles[0]);
} else {
return FALSE;
}
/* @FIXME: fill the other handles */
bo_handles[1] = bo_handles[0];
bo_handles[2] = bo_handles[0];
for (i = 0; i < 4; i++) {
offsets[i] = GST_VIDEO_INFO_PLANE_OFFSET (vinfo, i);
pitches[i] = GST_VIDEO_INFO_PLANE_STRIDE (vinfo, i);
}
ret = drmModeAddFB2 (alloc->priv->fd, w, h, fmt, bo_handles, pitches,
offsets, &kmsmem->fb_id, 0);
if (ret) {
GST_ERROR_OBJECT (alloc, "Failed to bind to framebuffer: %s (%d)",
strerror (-ret), ret);
return FALSE;
}
return TRUE;
}
GstMemory *
gst_kms_allocator_bo_alloc (GstAllocator * allocator, GstVideoInfo * vinfo)
{
GstKMSAllocator *alloc;
GstKMSMemory *kmsmem;
GstMemory *mem;
int ret;
guint attrs[] = {
KMS_WIDTH, GST_VIDEO_INFO_WIDTH (vinfo),
KMS_HEIGHT, GST_VIDEO_INFO_HEIGHT (vinfo),
KMS_TERMINATE_PROP_LIST,
};
kmsmem = g_slice_new0 (GstKMSMemory);
if (!kmsmem)
return NULL;
mem = GST_MEMORY_CAST (kmsmem);
gst_memory_init (mem, GST_MEMORY_FLAG_NO_SHARE, allocator, NULL,
GST_VIDEO_INFO_SIZE (vinfo), 0, 0, GST_VIDEO_INFO_SIZE (vinfo));
alloc = GST_KMS_ALLOCATOR (allocator);
if (!ensure_kms_driver (alloc))
goto fail;
kmsmem = (GstKMSMemory *) mem;
ret = kms_bo_create (alloc->priv->driver, attrs, &kmsmem->bo);
if (ret) {
GST_ERROR_OBJECT (alloc, "Failed to create buffer object: %s (%d)",
strerror (-ret), ret);
goto fail;
}
if (!gst_kms_allocator_add_fb (alloc, kmsmem, vinfo))
goto fail;
return mem;
/* ERRORS */
fail:
gst_memory_unref (mem);
return NULL;
}

84
sys/kms/gstkmsallocator.h Normal file
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@ -0,0 +1,84 @@
/* 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.
*
*/
#ifndef __GST_KMS_ALLOCATOR_H__
#define __GST_KMS_ALLOCATOR_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <libkms.h>
G_BEGIN_DECLS
#define GST_TYPE_KMS_ALLOCATOR \
(gst_kms_allocator_get_type())
#define GST_IS_KMS_ALLOCATOR(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_KMS_ALLOCATOR))
#define GST_IS_KMS_ALLOCATOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_KMS_ALLOCATOR))
#define GST_KMS_ALLOCATOR_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_KMS_ALLOCATOR, GstKMSAllocatorClass))
#define GST_KMS_ALLOCATOR(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_KMS_ALLOCATOR, GstKMSAllocator))
#define GST_KMS_ALLOCATOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_KMS_ALLOCATOR, GstKMSAllocatorClass))
typedef struct _GstKMSAllocator GstKMSAllocator;
typedef struct _GstKMSAllocatorClass GstKMSAllocatorClass;
typedef struct _GstKMSAllocatorPrivate GstKMSAllocatorPrivate;
typedef struct _GstKMSMemory GstKMSMemory;
struct _GstKMSMemory
{
GstMemory parent;
guint32 fb_id;
struct kms_bo *bo;
};
struct _GstKMSAllocator
{
GstAllocator parent;
GstKMSAllocatorPrivate *priv;
};
struct _GstKMSAllocatorClass {
GstAllocatorClass parent_class;
};
GType gst_kms_allocator_get_type (void) G_GNUC_CONST;
gboolean gst_is_kms_memory (GstMemory *mem);
guint32 gst_kms_memory_get_fb_id (GstMemory *mem);
GstAllocator* gst_kms_allocator_new (gint fd);
GstMemory* gst_kms_allocator_bo_alloc (GstAllocator *allocator,
GstVideoInfo *vinfo);
G_END_DECLS
#endif /* __GST_KMS_ALLOCATOR_H__ */

212
sys/kms/gstkmsbufferpool.c Normal file
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@ -0,0 +1,212 @@
/*
* 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
{
gint fd;
GstVideoInfo vinfo;
GstAllocator *allocator;
gboolean add_videometa;
};
#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, 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))
goto wrong_allocator;
if (priv->allocator)
gst_object_unref (priv->allocator);
if ((priv->allocator = allocator))
gst_object_ref (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);
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;
}
wrong_allocator:
{
GST_WARNING_OBJECT (pool, "invalid allocator: %" GST_PTR_FORMAT, allocator);
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;
*buffer = gst_buffer_new ();
if (*buffer == NULL)
goto no_memory;
mem = gst_kms_allocator_bo_alloc (priv->allocator, info);
if (!mem) {
gst_buffer_unref (*buffer);
goto no_memory;
}
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);
pool->priv->fd = -1;
}
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)
{
return g_object_new (GST_TYPE_KMS_BUFFER_POOL, NULL);
}

75
sys/kms/gstkmsbufferpool.h Normal file
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@ -0,0 +1,75 @@
/*
* 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.
*
*/
#ifndef __GST_KMS_BUFFER_POOL_H__
#define __GST_KMS_BUFFER_POOL_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include "gstkmssink.h"
G_BEGIN_DECLS
/**
* GST_BUFFER_POOL_OPTION_KMS_BUFFER:
*
* An option that can be activated on buffer pool to request KMS
* buffers.
*/
#define GST_BUFFER_POOL_OPTION_KMS_BUFFER "GstBufferPoolOptionKMSBuffer"
/* video bufferpool */
typedef struct _GstKMSBufferPool GstKMSBufferPool;
typedef struct _GstKMSBufferPoolClass GstKMSBufferPoolClass;
typedef struct _GstKMSBufferPoolPrivate GstKMSBufferPoolPrivate;
#define GST_TYPE_KMS_BUFFER_POOL \
(gst_kms_buffer_pool_get_type())
#define GST_IS_KMS_BUFFER_POOL(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_KMS_BUFFER_POOL))
#define GST_KMS_BUFFER_POOL(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_KMS_BUFFER_POOL, GstKMSBufferPool))
#define GST_KMS_BUFFER_POOL_CAST(obj) \
((GstKMSBufferPool*)(obj))
struct _GstKMSBufferPool
{
GstVideoBufferPool parent;
GstKMSBufferPoolPrivate *priv;
};
struct _GstKMSBufferPoolClass
{
GstVideoBufferPoolClass parent_class;
};
GType gst_kms_buffer_pool_get_type (void) G_GNUC_CONST;
GstBufferPool *gst_kms_buffer_pool_new (void);
G_END_DECLS
#endif /* __GST_KMS_BUFFER_POOL_H__ */

956
sys/kms/gstkmssink.c Normal file
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@ -0,0 +1,956 @@
/* 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.
*
*/
/**
* SECTION:element-kmssink
* @short_description: A KMS/DRM based video sink
*
* kmssink is a simple video sink that renders video frames directly
* in a plane of a DRM device.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 videotestsrc ! kmssink
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/video/video.h>
#include <drm.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <string.h>
#include "gstkmssink.h"
#include "gstkmsutils.h"
#include "gstkmsbufferpool.h"
#include "gstkmsallocator.h"
#define GST_PLUGIN_NAME "kmssink"
#define GST_PLUGIN_DESC "Video sink using the Linux kernel mode setting API"
GST_DEBUG_CATEGORY_STATIC (gst_kms_sink_debug);
#define GST_CAT_DEFAULT gst_kms_sink_debug
G_DEFINE_TYPE_WITH_CODE (GstKMSSink, gst_kms_sink, GST_TYPE_VIDEO_SINK,
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, GST_PLUGIN_NAME, 0,
GST_PLUGIN_DESC));
enum
{
PROP_DRIVER_NAME = 1,
PROP_CONNECTOR_ID,
PROP_N
};
static GParamSpec *g_properties[PROP_N] = { NULL, };
static int
kms_open (gchar ** driver)
{
static const char *drivers[] = { "i915", "radeon", "nouveau", "vmwgfx",
"exynos", "amdgpu", "imx-drm", "rockchip", "atmel-hlcdc"
};
int i, fd = -1;
for (i = 0; i < G_N_ELEMENTS (drivers); i++) {
fd = drmOpen (drivers[i], NULL);
if (fd >= 0) {
if (driver)
*driver = g_strdup (drivers[i]);
break;
}
}
return fd;
}
static drmModePlane *
find_plane_for_crtc (int fd, drmModeRes * res, drmModePlaneRes * pres,
int crtc_id)
{
drmModePlane *plane;
int i, pipe;
plane = NULL;
pipe = -1;
for (i = 0; i < res->count_crtcs; i++) {
if (crtc_id == res->crtcs[i]) {
pipe = i;
break;
}
}
if (pipe == -1)
return NULL;
for (i = 0; i < pres->count_planes; i++) {
plane = drmModeGetPlane (fd, pres->planes[i]);
if (plane->possible_crtcs & (1 << pipe))
return plane;
drmModeFreePlane (plane);
}
return NULL;
}
static drmModeCrtc *
find_crtc_for_connector (int fd, drmModeRes * res, drmModeConnector * conn)
{
int i;
int crtc_id;
drmModeEncoder *enc;
drmModeCrtc *crtc;
crtc_id = -1;
for (i = 0; i < res->count_encoders; i++) {
enc = drmModeGetEncoder (fd, res->encoders[i]);
if (enc) {
if (enc->encoder_id == conn->encoder_id) {
crtc_id = enc->crtc_id;
drmModeFreeEncoder (enc);
break;
}
drmModeFreeEncoder (enc);
}
}
if (crtc_id == -1)
return NULL;
for (i = 0; i < res->count_crtcs; i++) {
crtc = drmModeGetCrtc (fd, res->crtcs[i]);
if (crtc) {
if (crtc_id == crtc->crtc_id)
return crtc;
drmModeFreeCrtc (crtc);
}
}
return NULL;
}
static gboolean
connector_is_used (int fd, drmModeRes * res, drmModeConnector * conn)
{
gboolean result;
drmModeCrtc *crtc;
result = FALSE;
crtc = find_crtc_for_connector (fd, res, conn);
if (crtc) {
result = crtc->buffer_id != 0;
drmModeFreeCrtc (crtc);
}
return result;
}
static drmModeConnector *
find_used_connector_by_type (int fd, drmModeRes * res, int type)
{
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; i < res->count_connectors; i++) {
conn = drmModeGetConnector (fd, res->connectors[i]);
if (conn) {
if ((conn->connector_type == type) && connector_is_used (fd, res, conn))
return conn;
drmModeFreeConnector (conn);
}
}
return NULL;
}
static drmModeConnector *
find_first_used_connector (int fd, drmModeRes * res)
{
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; i < res->count_connectors; i++) {
conn = drmModeGetConnector (fd, res->connectors[i]);
if (conn) {
if (connector_is_used (fd, res, conn))
return conn;
drmModeFreeConnector (conn);
}
}
return NULL;
}
static drmModeConnector *
find_main_monitor (int fd, drmModeRes * res)
{
/* Find the LVDS and eDP connectors: those are the main screens. */
static const int priority[] = { DRM_MODE_CONNECTOR_LVDS,
DRM_MODE_CONNECTOR_eDP
};
int i;
drmModeConnector *conn;
conn = NULL;
for (i = 0; !conn && i < G_N_ELEMENTS (priority); i++)
conn = find_used_connector_by_type (fd, res, priority[i]);
/* if we didn't find a connector, grab the first one in use */
if (!conn)
conn = find_first_used_connector (fd, res);
return conn;
}
static void
log_drm_version (GstKMSSink * self)
{
#ifndef GST_DISABLE_GST_DEBUG
drmVersion *v;
v = drmGetVersion (self->fd);
if (v) {
GST_INFO_OBJECT (self, "DRM v%d.%d.%d [%s — %s — %s]", v->version_major,
v->version_minor, v->version_patchlevel, GST_STR_NULL (v->name),
GST_STR_NULL (v->desc), GST_STR_NULL (v->date));
drmFreeVersion (v);
} else {
GST_WARNING_OBJECT (self, "could not get driver information: %s",
GST_STR_NULL (self->devname));
}
#endif
return;
}
static gboolean
get_drm_caps (GstKMSSink * self)
{
gint ret;
guint64 has_dumb_buffer;
has_dumb_buffer = 0;
ret = drmGetCap (self->fd, DRM_CAP_DUMB_BUFFER, &has_dumb_buffer);
if (ret)
GST_WARNING_OBJECT (self, "could not get dumb buffer capability");
if (has_dumb_buffer == 0) {
GST_ERROR_OBJECT (self, "driver cannot handle dumb buffers");
return FALSE;
}
return TRUE;
}
static gboolean
ensure_allowed_caps (GstKMSSink * self, drmModePlane * plane, drmModeRes * res)
{
GstCaps *out_caps, *caps;
int i;
GstVideoFormat fmt;
const gchar *format;
if (self->allowed_caps)
return TRUE;
out_caps = gst_caps_new_empty ();
if (!out_caps)
return FALSE;
for (i = 0; i < plane->count_formats; i++) {
fmt = gst_video_format_from_drm (plane->formats[i]);
if (fmt == GST_VIDEO_FORMAT_UNKNOWN) {
GST_INFO_OBJECT (self, "ignoring format %" GST_FOURCC_FORMAT,
GST_FOURCC_ARGS (plane->formats[i]));
continue;
}
format = gst_video_format_to_string (fmt);
caps = gst_caps_new_simple ("video/x-raw", "format", G_TYPE_STRING, format,
"width", GST_TYPE_INT_RANGE, res->min_width, res->max_width,
"height", GST_TYPE_INT_RANGE, res->min_height, res->max_height,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
if (!caps)
continue;
out_caps = gst_caps_merge (out_caps, caps);
}
self->allowed_caps = gst_caps_simplify (out_caps);
GST_DEBUG_OBJECT (self, "allowed caps = %" GST_PTR_FORMAT,
self->allowed_caps);
return TRUE;
}
static gboolean
gst_kms_sink_start (GstBaseSink * bsink)
{
GstKMSSink *self;
drmModeRes *res;
drmModeConnector *conn;
drmModeCrtc *crtc;
drmModePlaneRes *pres;
drmModePlane *plane;
gboolean ret;
self = GST_KMS_SINK (bsink);
ret = FALSE;
res = NULL;
conn = NULL;
crtc = NULL;
pres = NULL;
plane = NULL;
if (self->devname)
self->fd = drmOpen (self->devname, NULL);
else
self->fd = kms_open (&self->devname);
if (self->fd < 0)
goto open_failed;
log_drm_version (self);
if (!get_drm_caps (self))
goto bail;
res = drmModeGetResources (self->fd);
if (!res)
goto resources_failed;
if (self->conn_id == -1)
conn = find_main_monitor (self->fd, res);
else
conn = drmModeGetConnector (self->fd, self->conn_id);
if (!conn)
goto connector_failed;
crtc = find_crtc_for_connector (self->fd, res, conn);
if (!crtc)
goto crtc_failed;
pres = drmModeGetPlaneResources (self->fd);
if (!pres)
goto plane_resources_failed;
plane = find_plane_for_crtc (self->fd, res, pres, crtc->crtc_id);
if (!plane)
goto plane_failed;
/* let's get the available color formats in plane */
if (!ensure_allowed_caps (self, plane, res))
goto bail;
self->conn_id = conn->connector_id;
self->crtc_id = crtc->crtc_id;
self->plane_id = plane->plane_id;
GST_INFO_OBJECT (self, "connector id = %d / crtc id = %d / plane id = %d",
self->conn_id, self->crtc_id, self->plane_id);
self->hdisplay = crtc->mode.hdisplay;
self->vdisplay = crtc->mode.vdisplay;
ret = TRUE;
bail:
if (plane)
drmModeFreePlane (plane);
if (pres)
drmModeFreePlaneResources (pres);
if (crtc)
drmModeFreeCrtc (crtc);
if (conn)
drmModeFreeConnector (conn);
if (res)
drmModeFreeResources (res);
if (!ret && self->fd >= 0) {
drmClose (self->fd);
self->fd = -1;
}
return ret;
/* ERRORS */
open_failed:
{
GST_ERROR_OBJECT (self, "Could not open DRM module %s: %s",
GST_STR_NULL (self->devname), strerror (errno));
return FALSE;
}
resources_failed:
{
GST_ERROR_OBJECT (self, "drmModeGetResources failed: %s (%d)",
strerror (errno), errno);
goto bail;
}
connector_failed:
{
GST_ERROR_OBJECT (self, "Could not find a valid monitor connector");
goto bail;
}
crtc_failed:
{
GST_ERROR_OBJECT (self, "Could not find a crtc for connector");
goto bail;
}
plane_resources_failed:
{
GST_ERROR_OBJECT (self, "drmModeGetPlaneResources failed: %s (%d)",
strerror (errno), errno);
goto bail;
}
plane_failed:
{
GST_ERROR_OBJECT (self, "Could not find a plane for crtc");
goto bail;
}
}
static gboolean
gst_kms_sink_stop (GstBaseSink * bsink)
{
GstKMSSink *self;
self = GST_KMS_SINK (bsink);
gst_caps_replace (&self->allowed_caps, NULL);
gst_object_replace ((GstObject **) & self->pool, NULL);
gst_object_replace ((GstObject **) & self->allocator, NULL);
if (self->fd >= 0) {
drmClose (self->fd);
self->fd = -1;
}
return TRUE;
}
static GstCaps *
gst_kms_sink_get_allowed_caps (GstKMSSink * self)
{
if (!self->allowed_caps)
return NULL; /* base class will return the template caps */
return gst_caps_ref (self->allowed_caps);
}
static GstCaps *
gst_kms_sink_get_caps (GstBaseSink * bsink, GstCaps * filter)
{
GstKMSSink *self;
GstCaps *caps, *out_caps;
self = GST_KMS_SINK (bsink);
caps = gst_kms_sink_get_allowed_caps (self);
if (caps && filter) {
out_caps = gst_caps_intersect_full (caps, filter, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
} else {
out_caps = caps;
}
return out_caps;
}
static void
ensure_kms_allocator (GstKMSSink * self)
{
if (self->allocator)
return;
self->allocator = gst_kms_allocator_new (self->fd);
}
static GstBufferPool *
gst_kms_sink_create_pool (GstKMSSink * self, GstCaps * caps, gsize size,
gint min)
{
GstBufferPool *pool;
GstStructure *config;
pool = gst_kms_buffer_pool_new ();
if (!pool)
goto pool_failed;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, 0);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
ensure_kms_allocator (self);
gst_buffer_pool_config_set_allocator (config, self->allocator, NULL);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
return pool;
/* ERRORS */
pool_failed:
{
GST_ERROR_OBJECT (self, "failed to create buffer pool");
return NULL;
}
config_failed:
{
GST_ERROR_OBJECT (self, "failed to set config");
gst_object_unref (pool);
return NULL;
}
}
static gboolean
gst_kms_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstKMSSink *self;
GstVideoInfo vinfo;
GstBufferPool *newpool, *oldpool;
self = GST_KMS_SINK (bsink);
if (!gst_video_info_from_caps (&vinfo, caps))
goto invalid_format;
GST_VIDEO_SINK_WIDTH (self) = GST_VIDEO_INFO_WIDTH (&vinfo);
GST_VIDEO_SINK_HEIGHT (self) = GST_VIDEO_INFO_HEIGHT (&vinfo);
if (GST_VIDEO_SINK_WIDTH (self) <= 0 || GST_VIDEO_SINK_HEIGHT (self) <= 0)
goto invalid_size;
/* create a new pool for the new configuration */
newpool = gst_kms_sink_create_pool (self, caps, GST_VIDEO_INFO_SIZE (&vinfo),
2);
if (!newpool)
goto no_pool;
/* we don't activate the internal pool yet as it may not be needed */
oldpool = self->pool;
self->pool = newpool;
if (oldpool) {
gst_buffer_pool_set_active (oldpool, FALSE);
gst_object_unref (oldpool);
}
self->vinfo = vinfo;
GST_DEBUG_OBJECT (self, "negotiated caps = %" GST_PTR_FORMAT, caps);
return TRUE;
/* ERRORS */
invalid_format:
{
GST_ERROR_OBJECT (self, "caps invalid");
return FALSE;
}
invalid_size:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION, (NULL),
("Invalid image size."));
return FALSE;
}
no_pool:
{
/* Already warned in create_pool */
return FALSE;
}
}
static gboolean
gst_kms_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstKMSSink *self;
GstCaps *caps;
gboolean need_pool;
GstVideoInfo vinfo;
GstBufferPool *pool;
gsize size;
self = GST_KMS_SINK (bsink);
gst_query_parse_allocation (query, &caps, &need_pool);
if (!caps)
goto no_caps;
if (!gst_video_info_from_caps (&vinfo, caps))
goto invalid_caps;
size = GST_VIDEO_INFO_SIZE (&vinfo);
pool = NULL;
if (need_pool) {
pool = gst_kms_sink_create_pool (self, caps, size, 0);
if (!pool)
goto no_pool;
}
if (pool) {
/* we need at least 2 buffer because we hold on to the last one */
gst_query_add_allocation_pool (query, pool, size, 2, 0);
gst_object_unref (pool);
}
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (bsink, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (bsink, "invalid caps specified");
return FALSE;
}
no_pool:
{
/* Already warned in create_pool */
return FALSE;
}
}
static void
gst_kms_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end)
{
GstKMSSink *self;
self = GST_KMS_SINK (bsink);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
*start = GST_BUFFER_TIMESTAMP (buf);
if (GST_BUFFER_DURATION_IS_VALID (buf))
*end = *start + GST_BUFFER_DURATION (buf);
else {
if (GST_VIDEO_INFO_FPS_N (&self->vinfo) > 0) {
*end = *start +
gst_util_uint64_scale_int (GST_SECOND,
GST_VIDEO_INFO_FPS_D (&self->vinfo),
GST_VIDEO_INFO_FPS_N (&self->vinfo));
}
}
}
}
static GstBuffer *
gst_kms_sink_get_input_buffer (GstKMSSink * self, GstBuffer * inbuf)
{
GstMemory *mem;
GstBuffer *buf;
GstFlowReturn ret;
GstVideoFrame inframe, outframe;
gboolean success;
mem = gst_buffer_peek_memory (inbuf, 0);
if (!mem)
return NULL;
if (gst_is_kms_memory (mem))
return gst_buffer_ref (inbuf);
if (!gst_buffer_pool_set_active (self->pool, TRUE))
goto activate_pool_failed;
buf = NULL;
ret = gst_buffer_pool_acquire_buffer (self->pool, &buf, NULL);
if (ret != GST_FLOW_OK)
goto create_buffer_failed;
if (!gst_video_frame_map (&inframe, &self->vinfo, inbuf, GST_MAP_READ))
goto error_map_src_buffer;
if (!gst_video_frame_map (&outframe, &self->vinfo, buf, GST_MAP_WRITE))
goto error_map_dst_buffer;
success = gst_video_frame_copy (&outframe, &inframe);
gst_video_frame_unmap (&outframe);
gst_video_frame_unmap (&inframe);
if (!success)
goto error_copy_buffer;
return buf;
bail:
{
if (buf)
gst_buffer_unref (buf);
return NULL;
}
/* ERRORS */
activate_pool_failed:
{
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("failed to activate buffer pool"),
("failed to activate buffer pool"));
goto bail;
}
create_buffer_failed:
{
GST_ELEMENT_ERROR (self, STREAM, FAILED, ("allocation failed"),
("failed to create buffer"));
goto bail;
}
error_copy_buffer:
{
GST_WARNING_OBJECT (self, "failed to upload buffer");
goto bail;
}
error_map_dst_buffer:
{
gst_video_frame_unmap (&inframe);
/* fall-through */
}
error_map_src_buffer:
{
GST_WARNING_OBJECT (self, "failed to map buffer");
goto bail;
}
}
static GstFlowReturn
gst_kms_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
{
gint ret;
GstBuffer *buffer;
guint32 fb_id;
GstKMSSink *self;
GstVideoCropMeta *crop;
GstVideoRectangle src = { 0, };
GstVideoRectangle dst = { 0, };
GstVideoRectangle result;
self = GST_KMS_SINK (vsink);
buffer = gst_kms_sink_get_input_buffer (self, buf);
if (!buffer)
return GST_FLOW_ERROR;
fb_id = gst_kms_memory_get_fb_id (gst_buffer_peek_memory (buffer, 0));
if (fb_id == 0)
goto buffer_invalid;
GST_DEBUG_OBJECT (self, "displaying fb %d", fb_id);
{
if ((crop = gst_buffer_get_video_crop_meta (buffer))) {
src.x = crop->x;
src.y = crop->y;
src.w = crop->width;
src.h = crop->height;
} else {
src.w = GST_VIDEO_SINK_WIDTH (self);
src.h = GST_VIDEO_SINK_HEIGHT (self);
}
}
dst.w = self->hdisplay;
dst.h = self->vdisplay;
gst_video_sink_center_rect (src, dst, &result, FALSE);
/* if the frame size is bigger than the display size, the source
* must be the display size */
src.w = MIN (src.w, self->hdisplay);
src.h = MIN (src.h, self->vdisplay);
ret = drmModeSetPlane (self->fd, self->plane_id, self->crtc_id, fb_id, 0,
result.x, result.y, result.w, result.h,
/* source/cropping coordinates are given in Q16 */
src.x << 16, src.y << 16, src.w << 16, src.h << 16);
gst_buffer_unref (buffer);
if (ret)
goto set_plane_failed;
return GST_FLOW_OK;
/* ERRORS */
buffer_invalid:
{
GST_ERROR_OBJECT (self, "invalid buffer: it doesn't have a fb id");
return GST_FLOW_ERROR;
}
set_plane_failed:
{
GST_DEBUG_OBJECT (self, "result = { %d, %d, %d, %d} / "
"src = { %d, %d, %d %d } / dst = { %d, %d, %d %d }", result.x, result.y,
result.w, result.h, src.x, src.y, src.w, src.h, dst.x, dst.y, dst.w,
dst.h);
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
(NULL), ("drmModeSetPlane failed: %s (%d)", strerror (-ret), ret));
return GST_FLOW_ERROR;
}
}
static void
gst_kms_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
switch (prop_id) {
case PROP_DRIVER_NAME:
sink->devname = g_value_dup_string (value);
break;
case PROP_CONNECTOR_ID:
sink->conn_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
switch (prop_id) {
case PROP_DRIVER_NAME:
g_value_take_string (value, sink->devname);
break;
case PROP_CONNECTOR_ID:
g_value_set_int (value, sink->conn_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_kms_sink_finalize (GObject * object)
{
GstKMSSink *sink;
sink = GST_KMS_SINK (object);
g_clear_pointer (&sink->devname, g_free);
}
static void
gst_kms_sink_init (GstKMSSink * sink)
{
sink->fd = -1;
sink->conn_id = -1;
gst_video_info_init (&sink->vinfo);
}
static void
gst_kms_sink_class_init (GstKMSSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseSinkClass *basesink_class;
GstVideoSinkClass *videosink_class;
GstCaps *caps;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
basesink_class = GST_BASE_SINK_CLASS (klass);
videosink_class = GST_VIDEO_SINK_CLASS (klass);
gst_element_class_set_static_metadata (element_class, "KMS video sink",
"Sink/Video", GST_PLUGIN_DESC, "Víctor Jáquez <vjaquez@igalia.com>");
caps = gst_kms_sink_caps_template_fill ();
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
gst_caps_unref (caps);
basesink_class->start = GST_DEBUG_FUNCPTR (gst_kms_sink_start);
basesink_class->stop = GST_DEBUG_FUNCPTR (gst_kms_sink_stop);
basesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_set_caps);
basesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_kms_sink_get_caps);
basesink_class->propose_allocation = gst_kms_sink_propose_allocation;
basesink_class->get_times = gst_kms_sink_get_times;
videosink_class->show_frame = gst_kms_sink_show_frame;
gobject_class->finalize = gst_kms_sink_finalize;
gobject_class->set_property = gst_kms_sink_set_property;
gobject_class->get_property = gst_kms_sink_get_property;
/**
* kmssink:driver-name:
*
* If you have a system with multiple GPUs, you can choose which GPU
* to use setting the DRM device driver name. Otherwise, the first
* one from an internal list is used.
*/
g_properties[PROP_DRIVER_NAME] = g_param_spec_string ("driver-name",
"device name", "DRM device driver name", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
/**
* kmssink:connector-id:
*
* A GPU has several output connectors, for example: LVDS, VGA,
* HDMI, etc. By default the first LVDS is tried, then the first
* eDP, and at the end, the first connected one.
*/
g_properties[PROP_CONNECTOR_ID] = g_param_spec_int ("connector-id",
"Connector ID", "DRM connector id", -1, G_MAXINT32, -1,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT);
g_object_class_install_properties (gobject_class, PROP_N, g_properties);
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, GST_PLUGIN_NAME, GST_RANK_SECONDARY,
GST_TYPE_KMS_SINK))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, kms,
GST_PLUGIN_DESC, plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)

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/* 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.
*
*/
#ifndef __GST_KMS_SINK_H__
#define __GST_KMS_SINK_H__
#include <gst/video/gstvideosink.h>
G_BEGIN_DECLS
#define GST_TYPE_KMS_SINK \
(gst_kms_sink_get_type())
#define GST_KMS_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_KMS_SINK, GstKMSSink))
#define GST_KMS_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_KMS_SINK, GstKMSSinkClass))
#define GST_IS_KMS_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_KMS_SINK))
#define GST_IS_KMS_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_KMS_SINK))
typedef struct _GstKMSSink GstKMSSink;
typedef struct _GstKMSSinkClass GstKMSSinkClass;
struct _GstKMSSink {
GstVideoSink videosink;
/*< private >*/
gint fd;
gint conn_id;
gint crtc_id;
gint plane_id;
guint16 hdisplay, vdisplay;
GstVideoInfo vinfo;
GstCaps *allowed_caps;
GstBufferPool *pool;
GstAllocator *allocator;
gchar *devname;
guint32 mm_width, mm_height;
};
struct _GstKMSSinkClass {
GstVideoSinkClass parent_class;
};
GType gst_kms_sink_get_type (void) G_GNUC_CONST;
G_END_DECLS
#endif /* __GST_KMS_SINK_H__ */

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/* 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 <drm_fourcc.h>
#include "gstkmsutils.h"
/* *INDENT-OFF* */
static const struct
{
guint32 fourcc;
GstVideoFormat format;
} format_map[] = {
#define DEF_FMT(fourcc, fmt) \
{ DRM_FORMAT_##fourcc,GST_VIDEO_FORMAT_##fmt }
/* DEF_FMT (XRGB1555, ???), */
/* DEF_FMT (XBGR1555, ???), */
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
DEF_FMT (ARGB8888, BGRA),
DEF_FMT (XRGB8888, BGRx),
DEF_FMT (ABGR8888, RGBA),
DEF_FMT (XBGR8888, RGBx),
#else
DEF_FMT (ARGB8888, ARGB),
DEF_FMT (XRGB8888, xRGB),
DEF_FMT (ABGR8888, ABGR),
DEF_FMT (XBGR8888, xBGR),
#endif
/* DEF_FMT (YUYV, ???), */
/* DEF_FMT (YVYU, ???), */
DEF_FMT (YUV420, I420),
DEF_FMT (YVU420, YV12),
DEF_FMT (NV12, NV12),
DEF_FMT (NV21, NV21),
#undef DEF_FMT
};
/* *INDENT-ON* */
GstVideoFormat
gst_video_format_from_drm (guint32 drmfmt)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
if (format_map[i].fourcc == drmfmt)
return format_map[i].format;
}
return GST_VIDEO_FORMAT_UNKNOWN;
}
guint32
gst_drm_format_from_video (GstVideoFormat fmt)
{
gint i;
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
if (format_map[i].format == fmt)
return format_map[i].fourcc;
}
return 0;
}
static GstStructure *
gst_video_format_to_structure (GstVideoFormat format)
{
GstStructure *structure;
structure = NULL;
if (format != GST_VIDEO_FORMAT_UNKNOWN)
structure = gst_structure_new ("video/x-raw", "format", G_TYPE_STRING,
gst_video_format_to_string (format), NULL);
return structure;
}
GstCaps *
gst_kms_sink_caps_template_fill (void)
{
gint i;
GstCaps *caps;
GstStructure *template;
caps = gst_caps_new_empty ();
for (i = 0; i < G_N_ELEMENTS (format_map); i++) {
template = gst_video_format_to_structure (format_map[i].format);
gst_structure_set (template,
"width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
gst_caps_append_structure (caps, template);
}
return gst_caps_simplify (caps);
}

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/* 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.
*
*/
#ifndef __GST_KMS_UTILS_H__
#define __GST_KMS_UTILS_H__
#include <gst/video/video.h>
G_BEGIN_DECLS
GstVideoFormat gst_video_format_from_drm (guint32 drmfmt);
guint32 gst_drm_format_from_video (GstVideoFormat fmt);
GstCaps * gst_kms_sink_caps_template_fill (void);
G_END_DECLS
#endif