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/* GStreamer NVENC plugin
* Copyright (C) 2015 Centricular Ltd
*
* 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 "gstnvh264enc.h"
#include <gst/pbutils/codec-utils.h>
#include <string.h>
#if HAVE_GST_GL
#include <cuda.h>
#include <cuda_runtime_api.h>
#include <cuda_gl_interop.h>
#define GST_USE_UNSTABLE_API
#include <gst/gl/gl.h>
#endif
#define parent_class gst_nv_h264_enc_parent_class
G_DEFINE_TYPE (GstNvH264Enc, gst_nv_h264_enc, GST_TYPE_NV_BASE_ENC);
/* *INDENT-OFF* */
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264, "
"width = (int) [ 1, 4096 ], height = (int) [ 1, 2160 ], "
"framerate = (fraction) [0/1, MAX], "
"stream-format = (string) byte-stream, " // TODO: avc support
"alignment = (string) au, "
"profile = (string) { high, main, baseline }") // TODO: a couple of others
);
/* *INDENT-ON* */
static gboolean gst_nv_h264_enc_open (GstVideoEncoder * enc);
static gboolean gst_nv_h264_enc_close (GstVideoEncoder * enc);
static GstCaps *gst_nv_h264_enc_getcaps (GstVideoEncoder * enc,
GstCaps * filter);
static gboolean gst_nv_h264_enc_set_src_caps (GstNvBaseEnc * nvenc,
GstVideoCodecState * state);
static gboolean gst_nv_h264_enc_set_encoder_config (GstNvBaseEnc * nvenc,
GstVideoCodecState * state, NV_ENC_CONFIG * config);
static gboolean gst_nv_h264_enc_set_pic_params (GstNvBaseEnc * nvenc,
GstVideoCodecFrame * frame, NV_ENC_PIC_PARAMS * pic_params);
static void gst_nv_h264_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_nv_h264_enc_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_nv_h264_enc_finalize (GObject * obj);
static void
gst_nv_h264_enc_class_init (GstNvH264EncClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoEncoderClass *videoenc_class = GST_VIDEO_ENCODER_CLASS (klass);
GstNvBaseEncClass *nvenc_class = GST_NV_BASE_ENC_CLASS (klass);
gobject_class->set_property = gst_nv_h264_enc_set_property;
gobject_class->get_property = gst_nv_h264_enc_get_property;
gobject_class->finalize = gst_nv_h264_enc_finalize;
videoenc_class->open = GST_DEBUG_FUNCPTR (gst_nv_h264_enc_open);
videoenc_class->close = GST_DEBUG_FUNCPTR (gst_nv_h264_enc_close);
videoenc_class->getcaps = GST_DEBUG_FUNCPTR (gst_nv_h264_enc_getcaps);
nvenc_class->codec_id = NV_ENC_CODEC_H264_GUID;
nvenc_class->set_encoder_config = gst_nv_h264_enc_set_encoder_config;
nvenc_class->set_src_caps = gst_nv_h264_enc_set_src_caps;
nvenc_class->set_pic_params = gst_nv_h264_enc_set_pic_params;
gst_element_class_add_static_pad_template (element_class, &src_factory);
gst_element_class_set_static_metadata (element_class,
"NVENC H.264 Video Encoder",
"Codec/Encoder/Video",
"Encode H.264 video streams using NVIDIA's hardware-accelerated NVENC encoder API",
"Tim-Philipp Müller <tim@centricular.com>\n"
"Matthew Waters <matthew@centricular.com>");
}
static void
gst_nv_h264_enc_init (GstNvH264Enc * nvenc)
{
}
static void
gst_nv_h264_enc_finalize (GObject * obj)
{
G_OBJECT_CLASS (gst_nv_h264_enc_parent_class)->finalize (obj);
}
static gboolean
_get_supported_profiles (GstNvH264Enc * nvenc)
{
NVENCSTATUS nv_ret;
GUID profile_guids[64];
GValue list = G_VALUE_INIT;
GValue val = G_VALUE_INIT;
guint i, n, n_profiles;
nv_ret =
NvEncGetEncodeProfileGUIDCount (GST_NV_BASE_ENC (nvenc)->encoder,
NV_ENC_CODEC_H264_GUID, &n);
if (nv_ret != NV_ENC_SUCCESS)
return FALSE;
nv_ret =
NvEncGetEncodeProfileGUIDs (GST_NV_BASE_ENC (nvenc)->encoder,
NV_ENC_CODEC_H264_GUID, profile_guids, G_N_ELEMENTS (profile_guids), &n);
if (nv_ret != NV_ENC_SUCCESS)
return FALSE;
n_profiles = 0;
g_value_init (&list, GST_TYPE_LIST);
for (i = 0; i < n; i++) {
g_value_init (&val, G_TYPE_STRING);
if (gst_nvenc_cmp_guid (profile_guids[i],
NV_ENC_H264_PROFILE_BASELINE_GUID)) {
g_value_set_static_string (&val, "baseline");
gst_value_list_append_value (&list, &val);
n_profiles++;
} else if (gst_nvenc_cmp_guid (profile_guids[i],
NV_ENC_H264_PROFILE_MAIN_GUID)) {
g_value_set_static_string (&val, "main");
gst_value_list_append_value (&list, &val);
n_profiles++;
} else if (gst_nvenc_cmp_guid (profile_guids[i],
NV_ENC_H264_PROFILE_HIGH_GUID)) {
g_value_set_static_string (&val, "high");
gst_value_list_append_value (&list, &val);
n_profiles++;
}
/* TODO: map HIGH_444, STEREO, CONSTRAINED_HIGH, SVC_TEMPORAL_SCALABILITY */
g_value_unset (&val);
}
if (n_profiles == 0)
return FALSE;
GST_OBJECT_LOCK (nvenc);
g_free (nvenc->supported_profiles);
nvenc->supported_profiles = g_memdup (&list, sizeof (GValue));
GST_OBJECT_UNLOCK (nvenc);
return TRUE;
}
static gboolean
gst_nv_h264_enc_open (GstVideoEncoder * enc)
{
GstNvH264Enc *nvenc = GST_NV_H264_ENC (enc);
if (!GST_VIDEO_ENCODER_CLASS (gst_nv_h264_enc_parent_class)->open (enc))
return FALSE;
/* Check if H.264 is supported */
{
uint32_t i, num = 0;
GUID guids[16];
NvEncGetEncodeGUIDs (GST_NV_BASE_ENC (nvenc)->encoder, guids,
G_N_ELEMENTS (guids), &num);
for (i = 0; i < num; ++i) {
if (gst_nvenc_cmp_guid (guids[i], NV_ENC_CODEC_H264_GUID))
break;
}
GST_INFO_OBJECT (enc, "H.264 encoding %ssupported", (i == num) ? "un" : "");
if (i == num) {
gst_nv_h264_enc_close (enc);
return FALSE;
}
}
/* query supported input formats */
if (!_get_supported_profiles (nvenc)) {
GST_WARNING_OBJECT (nvenc, "No supported encoding profiles");
gst_nv_h264_enc_close (enc);
return FALSE;
}
return TRUE;
}
static gboolean
gst_nv_h264_enc_close (GstVideoEncoder * enc)
{
GstNvH264Enc *nvenc = GST_NV_H264_ENC (enc);
GST_OBJECT_LOCK (nvenc);
g_free (nvenc->supported_profiles);
nvenc->supported_profiles = NULL;
GST_OBJECT_UNLOCK (nvenc);
return GST_VIDEO_ENCODER_CLASS (gst_nv_h264_enc_parent_class)->close (enc);
}
static GValue *
_get_interlace_modes (GstNvH264Enc * nvenc)
{
NV_ENC_CAPS_PARAM caps_param = { 0, };
GValue *list = g_new0 (GValue, 1);
GValue val = G_VALUE_INIT;
g_value_init (list, GST_TYPE_LIST);
g_value_init (&val, G_TYPE_STRING);
g_value_set_static_string (&val, "progressive");
gst_value_list_append_value (list, &val);
caps_param.version = NV_ENC_CAPS_PARAM_VER;
caps_param.capsToQuery = NV_ENC_CAPS_SUPPORT_FIELD_ENCODING;
if (NvEncGetEncodeCaps (GST_NV_BASE_ENC (nvenc)->encoder,
NV_ENC_CODEC_H264_GUID, &caps_param,
&nvenc->interlace_modes) != NV_ENC_SUCCESS)
nvenc->interlace_modes = 0;
if (nvenc->interlace_modes >= 1) {
g_value_set_static_string (&val, "interleaved");
gst_value_list_append_value (list, &val);
g_value_set_static_string (&val, "mixed");
gst_value_list_append_value (list, &val);
}
/* TODO: figure out what nvenc frame based interlacing means in gst terms */
return list;
}
static GstCaps *
gst_nv_h264_enc_getcaps (GstVideoEncoder * enc, GstCaps * filter)
{
GstNvH264Enc *nvenc = GST_NV_H264_ENC (enc);
GstCaps *supported_incaps = NULL;
GstCaps *template_caps, *caps;
GValue *input_formats = GST_NV_BASE_ENC (enc)->input_formats;
GST_OBJECT_LOCK (nvenc);
if (input_formats != NULL) {
GValue *val;
template_caps = gst_pad_get_pad_template_caps (enc->sinkpad);
supported_incaps = gst_caps_copy (template_caps);
gst_caps_set_value (supported_incaps, "format", input_formats);
val = _get_interlace_modes (nvenc);
gst_caps_set_value (supported_incaps, "interlace-mode", val);
g_free (val);
GST_LOG_OBJECT (enc, "codec input caps %" GST_PTR_FORMAT, supported_incaps);
GST_LOG_OBJECT (enc, " template caps %" GST_PTR_FORMAT, template_caps);
caps = gst_caps_intersect (template_caps, supported_incaps);
gst_caps_unref (template_caps);
gst_caps_unref (supported_incaps);
supported_incaps = caps;
GST_LOG_OBJECT (enc, " supported caps %" GST_PTR_FORMAT, supported_incaps);
}
GST_OBJECT_UNLOCK (nvenc);
caps = gst_video_encoder_proxy_getcaps (enc, supported_incaps, filter);
if (supported_incaps)
gst_caps_unref (supported_incaps);
GST_DEBUG_OBJECT (nvenc, " returning caps %" GST_PTR_FORMAT, caps);
return caps;
}
static gboolean
gst_nv_h264_enc_set_profile_and_level (GstNvH264Enc * nvenc, GstCaps * caps)
{
#define N_BYTES_SPS 128
guint8 sps[N_BYTES_SPS];
NV_ENC_SEQUENCE_PARAM_PAYLOAD spp = { 0, };
GstStructure *s;
const gchar *profile;
GstCaps *allowed_caps;
GstStructure *s2;
const gchar *allowed_profile;
NVENCSTATUS nv_ret;
guint32 seq_size;
spp.version = NV_ENC_SEQUENCE_PARAM_PAYLOAD_VER;
spp.inBufferSize = N_BYTES_SPS;
spp.spsId = 0;
spp.ppsId = 0;
spp.spsppsBuffer = &sps;
spp.outSPSPPSPayloadSize = &seq_size;
nv_ret = NvEncGetSequenceParams (GST_NV_BASE_ENC (nvenc)->encoder, &spp);
if (nv_ret != NV_ENC_SUCCESS) {
GST_ELEMENT_ERROR (nvenc, STREAM, ENCODE, ("Encode header failed."),
("NvEncGetSequenceParams return code=%d", nv_ret));
return FALSE;
}
if (seq_size < 8) {
GST_ELEMENT_ERROR (nvenc, STREAM, ENCODE, ("Encode header failed."),
("NvEncGetSequenceParams returned incomplete data"));
return FALSE;
}
/* skip nal header and identifier */
gst_codec_utils_h264_caps_set_level_and_profile (caps, &sps[5], 3);
/* Constrained baseline is a strict subset of baseline. If downstream
* wanted baseline and we produced constrained baseline, we can just
* set the profile to baseline in the caps to make negotiation happy.
* Same goes for baseline as subset of main profile and main as a subset
* of high profile.
*/
s = gst_caps_get_structure (caps, 0);
profile = gst_structure_get_string (s, "profile");
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (nvenc));
if (allowed_caps == NULL)
goto no_peer;
if (!gst_caps_can_intersect (allowed_caps, caps)) {
allowed_caps = gst_caps_make_writable (allowed_caps);
allowed_caps = gst_caps_truncate (allowed_caps);
s2 = gst_caps_get_structure (allowed_caps, 0);
gst_structure_fixate_field_string (s2, "profile", profile);
allowed_profile = gst_structure_get_string (s2, "profile");
if (!strcmp (allowed_profile, "high")) {
if (!strcmp (profile, "constrained-baseline")
|| !strcmp (profile, "baseline") || !strcmp (profile, "main")) {
gst_structure_set (s, "profile", G_TYPE_STRING, "high", NULL);
GST_INFO_OBJECT (nvenc, "downstream requested high profile, but "
"encoder will now output %s profile (which is a subset), due "
"to how it's been configured", profile);
}
} else if (!strcmp (allowed_profile, "main")) {
if (!strcmp (profile, "constrained-baseline")
|| !strcmp (profile, "baseline")) {
gst_structure_set (s, "profile", G_TYPE_STRING, "main", NULL);
GST_INFO_OBJECT (nvenc, "downstream requested main profile, but "
"encoder will now output %s profile (which is a subset), due "
"to how it's been configured", profile);
}
} else if (!strcmp (allowed_profile, "baseline")) {
if (!strcmp (profile, "constrained-baseline"))
gst_structure_set (s, "profile", G_TYPE_STRING, "baseline", NULL);
}
}
gst_caps_unref (allowed_caps);
no_peer:
return TRUE;
#undef N_BYTES_SPS
}
static gboolean
gst_nv_h264_enc_set_src_caps (GstNvBaseEnc * nvenc, GstVideoCodecState * state)
{
GstNvH264Enc *h264enc = GST_NV_H264_ENC (nvenc);
GstVideoCodecState *out_state;
GstStructure *s;
GstCaps *out_caps;
out_caps = gst_caps_new_empty_simple ("video/x-h264");
s = gst_caps_get_structure (out_caps, 0);
/* TODO: add support for avc format as well */
gst_structure_set (s, "stream-format", G_TYPE_STRING, "byte-stream",
"alignment", G_TYPE_STRING, "au", NULL);
if (!gst_nv_h264_enc_set_profile_and_level (h264enc, out_caps)) {
gst_caps_unref (out_caps);
return FALSE;
}
out_state = gst_video_encoder_set_output_state (GST_VIDEO_ENCODER (nvenc),
out_caps, state);
GST_INFO_OBJECT (nvenc, "output caps: %" GST_PTR_FORMAT, out_state->caps);
/* encoder will keep it around for us */
gst_video_codec_state_unref (out_state);
/* TODO: would be nice to also send some tags with the codec name */
return TRUE;
}
static gboolean
gst_nv_h264_enc_set_encoder_config (GstNvBaseEnc * nvenc,
GstVideoCodecState * state, NV_ENC_CONFIG * config)
{
GstNvH264Enc *h264enc = GST_NV_H264_ENC (nvenc);
GstCaps *allowed_caps, *template_caps;
GUID selected_profile = NV_ENC_CODEC_PROFILE_AUTOSELECT_GUID;
int level_idc = NV_ENC_LEVEL_AUTOSELECT;
GstVideoInfo *info = &state->info;
template_caps = gst_static_pad_template_get_caps (&src_factory);
allowed_caps = gst_pad_get_allowed_caps (GST_VIDEO_ENCODER_SRC_PAD (h264enc));
if (template_caps == allowed_caps) {
GST_INFO_OBJECT (h264enc, "downstream has ANY caps");
} else if (allowed_caps) {
GstStructure *s;
const gchar *profile;
const gchar *level;
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, "baseline")) {
selected_profile = NV_ENC_H264_PROFILE_BASELINE_GUID;
} else if (g_str_has_prefix (profile, "high-4:4:4")) {
selected_profile = NV_ENC_H264_PROFILE_HIGH_444_GUID;
} else if (g_str_has_prefix (profile, "high-10")) {
g_assert_not_reached ();
} else if (g_str_has_prefix (profile, "high-4:2:2")) {
g_assert_not_reached ();
} else if (g_str_has_prefix (profile, "high")) {
selected_profile = NV_ENC_H264_PROFILE_HIGH_GUID;
} else if (g_str_has_prefix (profile, "main")) {
selected_profile = NV_ENC_H264_PROFILE_MAIN_GUID;
} else {
g_assert_not_reached ();
}
}
level = gst_structure_get_string (s, "level");
if (level)
/* matches values stored in NV_ENC_LEVEL */
level_idc = gst_codec_utils_h264_get_level_idc (level);
gst_caps_unref (allowed_caps);
}
gst_caps_unref (template_caps);
/* override some defaults */
GST_LOG_OBJECT (h264enc, "setting parameters");
config->profileGUID = selected_profile;
config->encodeCodecConfig.h264Config.level = level_idc;
config->encodeCodecConfig.h264Config.chromaFormatIDC = 1;
if (GST_VIDEO_INFO_FORMAT (info) == GST_VIDEO_FORMAT_Y444) {
GST_DEBUG_OBJECT (h264enc, "have Y444 input, setting config accordingly");
config->encodeCodecConfig.h264Config.separateColourPlaneFlag = 1;
config->encodeCodecConfig.h264Config.chromaFormatIDC = 3;
}
/* FIXME: make property */
config->encodeCodecConfig.h264Config.outputAUD = 1;
return TRUE;
}
static gboolean
gst_nv_h264_enc_set_pic_params (GstNvBaseEnc * enc, GstVideoCodecFrame * frame,
NV_ENC_PIC_PARAMS * pic_params)
{
/* encode whole picture in one single slice */
pic_params->codecPicParams.h264PicParams.sliceMode = 0;
pic_params->codecPicParams.h264PicParams.sliceModeData = 0;
return TRUE;
}
static void
gst_nv_h264_enc_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nv_h264_enc_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}