gstreamer/gst/vaapi/gstvaapidecodebin.c

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/*
* gstvaapidecodebin.c
*
* Copyright (C) 2015 Intel Corporation
* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Author: Victor Jaquez <victorx.jaquez@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
/**
* SECTION:element-vaapidecodebin
* @short_description: A VA-API based video decoder with a
* post-processor
*
* vaapidecodebin is similar #GstVaapiDecode, but it is composed by
* the vaapidecode, a #GstQueue, and the #GstVaapiPostproc, if it is
* available and functional in the setup.
*
* It offers the functionality of #GstVaapiDecode and the many options
* of #GstVaapiPostproc.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 filesrc location=~/big_buck_bunny.mov ! qtdemux ! h264parse ! vaapidecodebin ! vaapisink
* ]|
* </refsect2>
*/
#include "gstcompat.h"
#include <stdio.h>
#include <string.h>
#include <gst/gst.h>
#include <gst/pbutils/pbutils.h>
#include "gstvaapipluginutil.h"
#include "gstvaapidecodebin.h"
#include "gstvaapivideocontext.h"
#include "gstvaapipluginbase.h"
#define GST_PLUGIN_NAME "vaapidecodebin"
#define GST_PLUGIN_DESC "A VA-API based bin with a decoder and a postprocessor"
GST_DEBUG_CATEGORY_STATIC (gst_debug_vaapi_decode_bin);
#define GST_CAT_DEFAULT gst_debug_vaapi_decode_bin
#define DEFAULT_QUEUE_MAX_SIZE_BUFFERS 0
#define DEFAULT_QUEUE_MAX_SIZE_BYTES 0
#define DEFAULT_QUEUE_MAX_SIZE_TIME 0
#define DEFAULT_DEINTERLACE_METHOD GST_VAAPI_DEINTERLACE_METHOD_BOB
enum
{
PROP_0,
PROP_MAX_SIZE_BUFFERS,
PROP_MAX_SIZE_BYTES,
PROP_MAX_SIZE_TIME,
PROP_DEINTERLACE_METHOD,
PROP_DISABLE_VPP,
PROP_LAST
};
enum
{
HAS_VPP_UNKNOWN,
HAS_VPP_NO,
HAS_VPP_YES
};
static GParamSpec *properties[PROP_LAST];
/* Default templates */
#define GST_CAPS_CODEC(CODEC) CODEC "; "
/* *INDENT-OFF* */
static const char gst_vaapi_decode_bin_sink_caps_str[] =
GST_CAPS_CODEC("video/mpeg, mpegversion=2, systemstream=(boolean)false")
GST_CAPS_CODEC("video/mpeg, mpegversion=4")
GST_CAPS_CODEC("video/x-divx")
GST_CAPS_CODEC("video/x-xvid")
GST_CAPS_CODEC("video/x-h263")
GST_CAPS_CODEC("video/x-h264")
#if USE_HEVC_DECODER
GST_CAPS_CODEC("video/x-h265")
#endif
GST_CAPS_CODEC("video/x-wmv")
#if USE_VP8_DECODER
GST_CAPS_CODEC("video/x-vp8")
#endif
;
/* *INDENT-ON* */
/* *INDENT-OFF* */
static const char gst_vaapi_decode_bin_src_caps_str[] =
GST_VAAPI_MAKE_SURFACE_CAPS ", "
GST_CAPS_INTERLACED_FALSE "; "
GST_VAAPI_MAKE_GLTEXUPLOAD_CAPS ", "
GST_CAPS_INTERLACED_FALSE "; "
GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ", "
GST_CAPS_INTERLACED_FALSE;
/* *INDENT-ON* */
static GstStaticPadTemplate gst_vaapi_decode_bin_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapi_decode_bin_sink_caps_str));
static GstStaticPadTemplate gst_vaapi_decode_bin_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapi_decode_bin_src_caps_str));
G_DEFINE_TYPE (GstVaapiDecodeBin, gst_vaapi_decode_bin, GST_TYPE_BIN);
static void
post_missing_element_message (GstVaapiDecodeBin * vaapidecbin,
const gchar * missing_factory)
{
GstMessage *msg;
GST_ERROR_OBJECT (vaapidecbin, "Failed to create %s element",
missing_factory);
msg =
gst_missing_element_message_new (GST_ELEMENT_CAST (vaapidecbin),
missing_factory);
gst_element_post_message (GST_ELEMENT_CAST (vaapidecbin), msg);
}
static gboolean
activate_vpp (GstVaapiDecodeBin * vaapidecbin)
{
GstPad *queue_srcpad, *srcpad, *vpp_sinkpad, *vpp_srcpad;
gboolean res;
if (vaapidecbin->postproc)
return TRUE;
if (vaapidecbin->has_vpp != HAS_VPP_YES || vaapidecbin->disable_vpp)
return TRUE;
GST_DEBUG_OBJECT (vaapidecbin, "Enabling VPP");
/* create the postproc */
vaapidecbin->postproc =
gst_element_factory_make ("vaapipostproc", "vaapipostproc");
if (!vaapidecbin->postproc)
goto error_element_missing;
g_object_set (G_OBJECT (vaapidecbin->postproc), "deinterlace-method",
vaapidecbin->deinterlace_method, NULL);
gst_bin_add (GST_BIN (vaapidecbin), vaapidecbin->postproc);
if (!gst_element_sync_state_with_parent (vaapidecbin->postproc))
goto error_sync_state;
srcpad = gst_element_get_static_pad (GST_ELEMENT_CAST (vaapidecbin), "src");
if (!gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (srcpad), NULL))
goto error_link_pad;
queue_srcpad = gst_element_get_static_pad (vaapidecbin->queue, "src");
vpp_sinkpad = gst_element_get_static_pad (vaapidecbin->postproc, "sink");
res = (gst_pad_link (queue_srcpad, vpp_sinkpad) == GST_PAD_LINK_OK);
gst_object_unref (vpp_sinkpad);
gst_object_unref (queue_srcpad);
if (!res)
goto error_link_pad;
vpp_srcpad = gst_element_get_static_pad (vaapidecbin->postproc, "src");
res = gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (srcpad), vpp_srcpad);
gst_object_unref (vpp_srcpad);
if (!res)
goto error_link_pad;
gst_object_unref (srcpad);
return TRUE;
error_element_missing:
{
post_missing_element_message (vaapidecbin, "vaapipostproc");
return FALSE;
}
error_sync_state:
{
GST_ERROR_OBJECT (vaapidecbin, "Failed to sync VPP state");
return FALSE;
}
error_link_pad:
{
gst_object_unref (srcpad);
GST_ERROR_OBJECT (vaapidecbin, "Failed to link the child elements");
return FALSE;
}
}
static gboolean
ensure_vpp (GstVaapiDecodeBin * vaapidecbin)
{
GstVaapiDisplay *display;
if (vaapidecbin->has_vpp != HAS_VPP_UNKNOWN)
return TRUE;
display = GST_VAAPI_PLUGIN_BASE_DISPLAY (vaapidecbin->decoder);
if (display) {
GST_INFO_OBJECT (vaapidecbin, "Got display from vaapidecode");
gst_vaapi_display_ref (display);
} else {
GST_INFO_OBJECT (vaapidecbin, "Creating a dummy display to test for vpp");
display = gst_vaapi_create_test_display ();
}
if (!display)
return FALSE;
vaapidecbin->has_vpp = gst_vaapi_display_has_video_processing (display) ?
HAS_VPP_YES : HAS_VPP_NO;
gst_vaapi_display_unref (display);
return TRUE;
}
static gboolean
gst_vaapi_decode_bin_reconfigure (GstVaapiDecodeBin * vaapidecbin)
{
if (!ensure_vpp (vaapidecbin))
return FALSE;
return activate_vpp (vaapidecbin);
}
static void
gst_vaapi_decode_bin_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstVaapiDecodeBin *vaapidecbin = GST_VAAPI_DECODE_BIN (object);
switch (prop_id) {
case PROP_MAX_SIZE_BYTES:
vaapidecbin->max_size_bytes = g_value_get_uint (value);
g_object_set (G_OBJECT (vaapidecbin->queue), "max-size-bytes",
vaapidecbin->max_size_bytes, NULL);
break;
case PROP_MAX_SIZE_BUFFERS:
vaapidecbin->max_size_buffers = g_value_get_uint (value);
g_object_set (G_OBJECT (vaapidecbin->queue), "max-size-buffers",
vaapidecbin->max_size_buffers, NULL);
break;
case PROP_MAX_SIZE_TIME:
vaapidecbin->max_size_time = g_value_get_uint64 (value);
g_object_set (G_OBJECT (vaapidecbin->queue), "max-size-time",
vaapidecbin->max_size_time, NULL);
break;
case PROP_DEINTERLACE_METHOD:
vaapidecbin->deinterlace_method = g_value_get_enum (value);
if (vaapidecbin->postproc)
g_object_set (G_OBJECT (vaapidecbin->postproc), "deinterlace-method",
vaapidecbin->deinterlace_method, NULL);
break;
case PROP_DISABLE_VPP:
{
gboolean disable_vpp;
disable_vpp = g_value_get_boolean (value);
if (!disable_vpp && !vaapidecbin->has_vpp)
GST_WARNING_OBJECT (vaapidecbin,
"Cannot enable VPP since the VA driver does not support it");
else
vaapidecbin->disable_vpp = disable_vpp;
/* @TODO: Add run-time disabling support */
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_decode_bin_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstVaapiDecodeBin *vaapidecbin = GST_VAAPI_DECODE_BIN (object);
switch (prop_id) {
case PROP_MAX_SIZE_BYTES:
g_value_set_uint (value, vaapidecbin->max_size_bytes);
break;
case PROP_MAX_SIZE_BUFFERS:
g_value_set_uint (value, vaapidecbin->max_size_buffers);
break;
case PROP_MAX_SIZE_TIME:
g_value_set_uint64 (value, vaapidecbin->max_size_time);
break;
case PROP_DEINTERLACE_METHOD:
g_value_set_enum (value, vaapidecbin->deinterlace_method);
break;
case PROP_DISABLE_VPP:
g_value_set_boolean (value, vaapidecbin->disable_vpp);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vaapi_decode_bin_handle_message (GstBin * bin, GstMessage * message)
{
GstVaapiDecodeBin *vaapidecbin = GST_VAAPI_DECODE_BIN (bin);
GstMessageType type;
GstContext *context = NULL;
const gchar *context_type;
GstVaapiDisplay *display = NULL;
type = GST_MESSAGE_TYPE (message);
if (type != GST_MESSAGE_HAVE_CONTEXT)
goto bail;
gst_message_parse_have_context (message, &context);
if (!context)
goto bail;
context_type = gst_context_get_context_type (context);
if (g_strcmp0 (context_type, GST_VAAPI_DISPLAY_CONTEXT_TYPE_NAME) != 0)
goto bail;
if (!gst_vaapi_video_context_get_display (context, &display))
goto bail;
vaapidecbin->has_vpp = gst_vaapi_display_has_video_processing (display) ?
HAS_VPP_YES : HAS_VPP_NO;
/* the underlying VA driver implementation doesn't support video
* post-processing, hence we have to disable it */
if (vaapidecbin->has_vpp != HAS_VPP_YES) {
GST_WARNING_OBJECT (vaapidecbin, "VA driver doesn't support VPP");
if (!vaapidecbin->disable_vpp) {
vaapidecbin->disable_vpp = TRUE;
g_object_notify_by_pspec (G_OBJECT (vaapidecbin),
properties[PROP_DISABLE_VPP]);
}
}
bail:
if (display)
gst_vaapi_display_unref (display);
if (context)
gst_context_unref (context);
GST_BIN_CLASS (gst_vaapi_decode_bin_parent_class)->handle_message (bin,
message);
}
static GstStateChangeReturn
gst_vaapi_decode_bin_change_state (GstElement * element,
GstStateChange transition)
{
GstVaapiDecodeBin *vaapidecbin = GST_VAAPI_DECODE_BIN (element);
GstStateChangeReturn ret;
switch (transition) {
default:
break;
}
ret = GST_ELEMENT_CLASS (gst_vaapi_decode_bin_parent_class)->change_state
(element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_vaapi_decode_bin_reconfigure (vaapidecbin))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
return ret;
}
static void
gst_vaapi_decode_bin_class_init (GstVaapiDecodeBinClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBinClass *bin_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
bin_class = GST_BIN_CLASS (klass);
gobject_class->set_property = gst_vaapi_decode_bin_set_property;
gobject_class->get_property = gst_vaapi_decode_bin_get_property;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_vaapi_decode_bin_change_state);
bin_class->handle_message =
GST_DEBUG_FUNCPTR (gst_vaapi_decode_bin_handle_message);
gst_element_class_set_static_metadata (element_class,
"VA-API Decode Bin",
"Codec/Decoder/Video",
GST_PLUGIN_DESC,
"Sreerenj Balachandran <sreerenj.balachandran@intel.com>, "
"Victor Jaquez <victorx.jaquez@intel.com>");
properties[PROP_MAX_SIZE_BYTES] = g_param_spec_uint ("max-size-bytes",
"Max. size (kB)", "Max. amount of data in the queue (bytes, 0=disable)",
0, G_MAXUINT, DEFAULT_QUEUE_MAX_SIZE_BYTES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_MAX_SIZE_BUFFERS] = g_param_spec_uint ("max-size-buffers",
"Max. size (buffers)", "Max. number of buffers in the queue (0=disable)",
0, G_MAXUINT, DEFAULT_QUEUE_MAX_SIZE_BUFFERS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_MAX_SIZE_TIME] = g_param_spec_uint64 ("max-size-time",
"Max. size (ns)", "Max. amount of data in the queue (in ns, 0=disable)",
0, G_MAXUINT64, DEFAULT_QUEUE_MAX_SIZE_TIME,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_DEINTERLACE_METHOD] = g_param_spec_enum ("deinterlace-method",
"Deinterlace method", "Deinterlace method to use",
GST_VAAPI_TYPE_DEINTERLACE_METHOD, DEFAULT_DEINTERLACE_METHOD,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
properties[PROP_DISABLE_VPP] = g_param_spec_boolean ("disable-vpp",
"Disable VPP",
"Disable Video Post Processing (No support for run time disabling)",
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, PROP_LAST, properties);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vaapi_decode_bin_sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vaapi_decode_bin_src_factory));
GST_DEBUG_CATEGORY_INIT (gst_debug_vaapi_decode_bin,
GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
}
static gboolean
gst_vaapi_decode_bin_configure (GstVaapiDecodeBin * vaapidecbin)
{
const gchar *missing_factory = NULL;
GstPad *pad, *ghostpad;
GstPadTemplate *tmpl;
/* create the decoder */
/* @FIXME: "vaapidecode" is going to be removed soon: (bug
* #734093). Instead there are going to be a set of elements
* "vaapi{codec}dec". We will need a mechanism to automatically
* select de correct decoder based on caps.
*/
vaapidecbin->decoder =
gst_element_factory_make ("vaapidecode", "vaapidecode");
if (!vaapidecbin->decoder) {
missing_factory = "vaapidecode";
goto error_element_missing;
}
/* create the queue */
vaapidecbin->queue = gst_element_factory_make ("queue", "queue");
if (!vaapidecbin->queue) {
missing_factory = "queue";
goto error_element_missing;
}
g_object_set (G_OBJECT (vaapidecbin->queue),
"max-size-bytes", vaapidecbin->max_size_bytes,
"max-size-buffers", vaapidecbin->max_size_buffers,
"max-size-time", vaapidecbin->max_size_time, NULL);
gst_bin_add_many (GST_BIN (vaapidecbin), vaapidecbin->decoder,
vaapidecbin->queue, NULL);
if (!gst_element_link_many (vaapidecbin->decoder, vaapidecbin->queue, NULL))
goto error_link_pad;
/* create ghost pad sink */
pad = gst_element_get_static_pad (GST_ELEMENT (vaapidecbin->decoder), "sink");
ghostpad = gst_ghost_pad_new_from_template ("sink", pad,
GST_PAD_PAD_TEMPLATE (pad));
gst_object_unref (pad);
if (!gst_element_add_pad (GST_ELEMENT (vaapidecbin), ghostpad))
goto error_adding_pad;
/* create ghost pad src */
pad = gst_element_get_static_pad (GST_ELEMENT (vaapidecbin->queue), "src");
tmpl = gst_static_pad_template_get (&gst_vaapi_decode_bin_src_factory);
ghostpad = gst_ghost_pad_new_from_template ("src", pad, tmpl);
gst_object_unref (pad);
gst_object_unref (tmpl);
if (!gst_element_add_pad (GST_ELEMENT (vaapidecbin), ghostpad))
goto error_adding_pad;
return TRUE;
error_element_missing:
{
post_missing_element_message (vaapidecbin, missing_factory);
return FALSE;
}
error_link_pad:
{
GST_ELEMENT_ERROR (vaapidecbin, CORE, PAD, (NULL),
("Failed to configure the vaapidecodebin."));
return FALSE;
}
error_adding_pad:
{
GST_ELEMENT_ERROR (vaapidecbin, CORE, PAD, (NULL),
("Failed to adding pads."));
return FALSE;
}
}
static void
gst_vaapi_decode_bin_init (GstVaapiDecodeBin * vaapidecbin)
{
vaapidecbin->has_vpp = HAS_VPP_UNKNOWN;
vaapidecbin->deinterlace_method = DEFAULT_DEINTERLACE_METHOD;
gst_vaapi_decode_bin_configure (vaapidecbin);
}