gstreamer/subprojects/gst-plugins-bad/sys/msdk/gstmsdkmpeg2enc.c
Yinhang Liu a4fc1c5031 msdkenc: Add documented capabilities to expose "stable" caps
Although msdkenc supports dynamic caps, it still needs to expose
"stable" caps to users.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4177>
2023-04-17 05:24:06 +00:00

285 lines
8.6 KiB
C

/* GStreamer Intel MSDK plugin
* Copyright (c) 2016, Oblong Industries, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* SECTION:element-msdkmpeg2enc
* @title: msdkmpeg2enc
* @short_description: Intel MSDK MPEG2 encoder
*
* MPEG2 video encoder based on Intel MFX
*
* ## Example launch line
* ```
* gst-launch-1.0 videotestsrc num-buffers=90 ! msdkmpeg2enc ! mpegvideoparse ! filesink location=output.mpg
* ```
*
* Since: 1.12
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "gstmsdkmpeg2enc.h"
GST_DEBUG_CATEGORY_EXTERN (gst_msdkmpeg2enc_debug);
#define GST_CAT_DEFAULT gst_msdkmpeg2enc_debug
#define GST_MSDKMPEG2ENC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), G_TYPE_FROM_INSTANCE (obj), GstMsdkMPEG2Enc))
#define GST_MSDKMPEG2ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), G_TYPE_FROM_CLASS (klass), GstMsdkMPEG2EncClass))
#define GST_IS_MSDKMPEG2ENC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), G_TYPE_FROM_INSTANCE (obj)))
#define GST_IS_MSDKMPEG2ENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), G_TYPE_FROM_CLASS (klass)))
/* *INDENT-OFF* */
static const gchar *doc_sink_caps_str =
GST_VIDEO_CAPS_MAKE ("{ NV12 }") " ;"
GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:DMABuf", "{ NV12 }") " ;"
GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:VAMemory", "{ NV12 }") " ;"
GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:D3D11Memory", "{ NV12 }");
/* *INDENT-ON* */
static const gchar *doc_src_caps_str = "video/mpeg";
static GstElementClass *parent_class = NULL;
static gboolean
gst_msdkmpeg2enc_set_format (GstMsdkEnc * encoder)
{
GstMsdkMPEG2Enc *thiz = GST_MSDKMPEG2ENC (encoder);
GstPad *srcpad;
GstCaps *template_caps;
GstCaps *allowed_caps = NULL;
thiz->profile = 0;
srcpad = GST_VIDEO_ENCODER_SRC_PAD (encoder);
template_caps = gst_pad_get_pad_template_caps (srcpad);
allowed_caps = gst_pad_get_allowed_caps (srcpad);
/* If downstream has ANY caps let encoder decide profile and level */
if (allowed_caps == template_caps) {
GST_INFO_OBJECT (thiz,
"downstream has ANY caps, profile/level set to auto");
} else if (allowed_caps) {
GstStructure *s;
const gchar *profile;
if (gst_caps_is_empty (allowed_caps)) {
gst_caps_unref (allowed_caps);
gst_caps_unref (template_caps);
return FALSE;
}
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_fixate (allowed_caps);
s = gst_caps_get_structure (allowed_caps, 0);
profile = gst_structure_get_string (s, "profile");
if (profile) {
if (!strcmp (profile, "high")) {
thiz->profile = MFX_PROFILE_MPEG2_HIGH;
} else if (!strcmp (profile, "main")) {
thiz->profile = MFX_PROFILE_MPEG2_MAIN;
} else if (!strcmp (profile, "simple")) {
thiz->profile = MFX_PROFILE_MPEG2_SIMPLE;
} else {
g_assert_not_reached ();
}
}
gst_caps_unref (allowed_caps);
}
gst_caps_unref (template_caps);
return TRUE;
}
static gboolean
gst_msdkmpeg2enc_configure (GstMsdkEnc * encoder)
{
GstMsdkMPEG2Enc *thiz = GST_MSDKMPEG2ENC (encoder);
encoder->param.mfx.CodecId = MFX_CODEC_MPEG2;
encoder->param.mfx.CodecProfile = thiz->profile;
encoder->param.mfx.CodecLevel = 0;
/* Enable Extended Coding options */
gst_msdkenc_ensure_extended_coding_options (encoder);
return TRUE;
}
static inline const gchar *
profile_to_string (gint profile)
{
switch (profile) {
case MFX_PROFILE_MPEG2_HIGH:
return "high";
case MFX_PROFILE_MPEG2_MAIN:
return "main";
case MFX_PROFILE_MPEG2_SIMPLE:
return "simple";
default:
break;
}
return NULL;
}
static GstCaps *
gst_msdkmpeg2enc_set_src_caps (GstMsdkEnc * encoder)
{
GstCaps *caps;
GstStructure *structure;
const gchar *profile;
caps = gst_caps_from_string ("video/mpeg, mpegversion=2, systemstream=false");
structure = gst_caps_get_structure (caps, 0);
profile = profile_to_string (encoder->param.mfx.CodecProfile);
if (profile)
gst_structure_set (structure, "profile", G_TYPE_STRING, profile, NULL);
return caps;
}
static void
gst_msdkmpeg2enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMsdkMPEG2Enc *thiz = GST_MSDKMPEG2ENC (object);
if (!gst_msdkenc_set_common_property (object, prop_id, value, pspec))
GST_WARNING_OBJECT (thiz, "Failed to set common encode property");
}
static void
gst_msdkmpeg2enc_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstMsdkMPEG2Enc *thiz = GST_MSDKMPEG2ENC (object);
if (!gst_msdkenc_get_common_property (object, prop_id, value, pspec))
GST_WARNING_OBJECT (thiz, "Failed to get common encode property");
}
static void
gst_msdkmpeg2enc_class_init (gpointer klass, gpointer data)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstMsdkEncClass *encoder_class;
MsdkEncCData *cdata = data;
parent_class = g_type_class_peek_parent (klass);
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
encoder_class = GST_MSDKENC_CLASS (klass);
gobject_class->set_property = gst_msdkmpeg2enc_set_property;
gobject_class->get_property = gst_msdkmpeg2enc_get_property;
encoder_class->set_format = gst_msdkmpeg2enc_set_format;
encoder_class->configure = gst_msdkmpeg2enc_configure;
encoder_class->set_src_caps = gst_msdkmpeg2enc_set_src_caps;
gst_msdkenc_install_common_properties (encoder_class);
gst_element_class_set_static_metadata (element_class,
"Intel MSDK MPEG2 encoder",
"Codec/Encoder/Video/Hardware",
"MPEG2 video encoder based on " MFX_API_SDK,
"Josep Torra <jtorra@oblong.com>");
gst_msdkcaps_pad_template_init (element_class,
cdata->sink_caps, cdata->src_caps, doc_sink_caps_str, doc_src_caps_str);
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata);
}
static void
gst_msdkmpeg2enc_init (GTypeInstance * instance, gpointer g_class)
{
}
gboolean
gst_msdkmpeg2enc_register (GstPlugin * plugin,
GstMsdkContext * context, GstCaps * sink_caps,
GstCaps * src_caps, guint rank)
{
GType type;
MsdkEncCData *cdata;
gchar *type_name, *feature_name;
gboolean ret = FALSE;
GTypeInfo type_info = {
.class_size = sizeof (GstMsdkMPEG2EncClass),
.class_init = gst_msdkmpeg2enc_class_init,
.instance_size = sizeof (GstMsdkMPEG2Enc),
.instance_init = gst_msdkmpeg2enc_init
};
cdata = g_new (MsdkEncCData, 1);
cdata->sink_caps = gst_caps_ref (sink_caps);
cdata->src_caps = gst_caps_copy (src_caps);
gst_caps_set_simple (cdata->src_caps,
"mpegversion", G_TYPE_INT, 2,
"systemstream", G_TYPE_BOOLEAN, FALSE, NULL);
GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (cdata->src_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
type_info.class_data = cdata;
type_name = g_strdup ("GstMsdkMPEG2Enc");
feature_name = g_strdup ("msdkmpeg2enc");
type = g_type_register_static (GST_TYPE_MSDKENC, type_name, &type_info, 0);
if (type)
ret = gst_element_register (plugin, feature_name, rank, type);
g_free (type_name);
g_free (feature_name);
return ret;
}