gstreamer/gst/vaapi/gstvaapiencode_h264_fei.c
He Junyan 61de88e580 plugin: encode: change the dmabuf caps to all supported formats.
The encode's dmabuf caps definition is obsolete, it can support
more formats now. Re-define it to include all supported formats
in video format map.
2019-12-18 20:34:27 +08:00

513 lines
15 KiB
C

/*
* gstvaapiencode_h264_fei.c - VA-API H.264 FEI ncoder
*
* Copyright (C) 2016-2019 Intel Corporation
* Author: Sreerenj Balachandran <sreerenj.balachandran@intel.com>
* Author: Yi A Wang <yi.a.wang@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-vaapih264feienc
* @short_description: A VA-API FEI based H.264 video encoder
*
* Encodes raw video streams into H.264 bitstreams.
*
* ## Example launch line
*
* |[
* gst-launch-1.0 -ev videotestsrc num-buffers=60 ! vaapih264feienc fei-mode=ENC_PAK ! filesink location=test.264
* ]|
*/
#include "gstcompat.h"
#include <gst/vaapi/gstvaapidisplay.h>
#include <gst/vaapi/gstvaapiencoder_h264_fei.h>
#include <gst/vaapi/gstvaapiutils_h264.h>
#include <gst/vaapi/gstvaapifei_objects.h>
#include <gst/vaapi/gstvaapifeiutils_h264.h>
#include "gstvaapiencode_h264_fei.h"
#include "gstvaapipluginutil.h"
#include "gstvaapivideomemory.h"
#include "gstvaapifeivideometa.h"
#include <gst/vaapi/gstvaapicodedbufferproxy.h>
#define GST_VAAPI_ENCODE_FLOW_MEM_ERROR GST_FLOW_CUSTOM_ERROR
#define GST_PLUGIN_NAME "vaapih264feienc"
#define GST_PLUGIN_DESC "A VA-API FEI based advanced H264 video encoder"
GST_DEBUG_CATEGORY_STATIC (gst_vaapi_h264_fei_encode_debug);
#define GST_CAT_DEFAULT gst_vaapi_h264_fei_encode_debug
#define GST_CODEC_CAPS \
"video/x-h264, " \
"stream-format = (string) { avc, byte-stream }, " \
"alignment = (string) au"
/* *INDENT-OFF* */
static const char gst_vaapiencode_h264_fei_sink_caps_str[] =
GST_VAAPI_MAKE_SURFACE_CAPS ", "
GST_CAPS_INTERLACED_FALSE "; "
GST_VIDEO_CAPS_MAKE (GST_VAAPI_FORMATS_ALL) ", "
GST_CAPS_INTERLACED_FALSE ";"
GST_VIDEO_CAPS_MAKE_WITH_FEATURES(GST_CAPS_FEATURE_MEMORY_DMABUF, GST_VAAPI_FORMATS_ALL) ","
GST_CAPS_INTERLACED_FALSE;
/* *INDENT-ON* */
/* *INDENT-OFF* */
static const char gst_vaapiencode_h264_fei_src_caps_str[] =
GST_CODEC_CAPS ", "
"profile = (string) { constrained-baseline, baseline, main, high, multiview-high, stereo-high }";
/* *INDENT-ON* */
/* *INDENT-OFF* */
static GstStaticPadTemplate gst_vaapiencode_h264_fei_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapiencode_h264_fei_sink_caps_str));
/* *INDENT-ON* */
/* *INDENT-OFF* */
static GstStaticPadTemplate gst_vaapiencode_h264_fei_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapiencode_h264_fei_src_caps_str));
/* *INDENT-ON* */
/* h264 encode */
G_DEFINE_TYPE (GstVaapiEncodeH264Fei, gst_vaapiencode_h264_fei,
GST_TYPE_VAAPIENCODE);
static void
gst_vaapiencode_h264_fei_init (GstVaapiEncodeH264Fei * encode)
{
/* nothing to do here */
}
static void
gst_vaapiencode_h264_fei_finalize (GObject * object)
{
G_OBJECT_CLASS (gst_vaapiencode_h264_fei_parent_class)->finalize (object);
}
typedef struct
{
GstVaapiProfile best_profile;
guint best_score;
} FindBestProfileData;
static void
find_best_profile_value (FindBestProfileData * data, const GValue * value)
{
const gchar *str;
GstVaapiProfile profile;
guint score;
if (!value || !G_VALUE_HOLDS_STRING (value))
return;
str = g_value_get_string (value);
if (!str)
return;
profile = gst_vaapi_utils_h264_get_profile_from_string (str);
if (!profile)
return;
score = gst_vaapi_utils_h264_get_profile_score (profile);
if (score < data->best_score)
return;
data->best_profile = profile;
data->best_score = score;
}
static GstVaapiProfile
find_best_profile (GstCaps * caps)
{
FindBestProfileData data;
guint i, j, num_structures, num_values;
data.best_profile = GST_VAAPI_PROFILE_UNKNOWN;
data.best_score = 0;
num_structures = gst_caps_get_size (caps);
for (i = 0; i < num_structures; i++) {
GstStructure *const structure = gst_caps_get_structure (caps, i);
const GValue *const value = gst_structure_get_value (structure, "profile");
if (!value)
continue;
if (G_VALUE_HOLDS_STRING (value))
find_best_profile_value (&data, value);
else if (GST_VALUE_HOLDS_LIST (value)) {
num_values = gst_value_list_get_size (value);
for (j = 0; j < num_values; j++)
find_best_profile_value (&data, gst_value_list_get_value (value, j));
}
}
return data.best_profile;
}
static gboolean
gst_vaapiencode_h264_fei_set_config (GstVaapiEncode * base_encode)
{
GstVaapiEncoderH264Fei *const encoder =
GST_VAAPI_ENCODER_H264_FEI (base_encode->encoder);
GstCaps *allowed_caps;
GstVaapiProfile profile;
/* Check for the largest profile that is supported */
allowed_caps =
gst_pad_get_allowed_caps (GST_VAAPI_PLUGIN_BASE_SRC_PAD (base_encode));
if (!allowed_caps)
return TRUE;
profile = find_best_profile (allowed_caps);
gst_caps_unref (allowed_caps);
if (profile) {
GST_INFO ("using %s profile as target decoder constraints",
gst_vaapi_utils_h264_get_profile_string (profile));
if (!gst_vaapi_encoder_h264_fei_set_max_profile (encoder, profile))
return FALSE;
}
return TRUE;
}
static GstCaps *
gst_vaapiencode_h264_fei_get_caps (GstVaapiEncode * base_encode)
{
GstVaapiEncodeH264Fei *const encode =
GST_VAAPIENCODE_H264_FEI_CAST (base_encode);
GstCaps *caps, *allowed_caps;
caps = gst_caps_from_string (GST_CODEC_CAPS);
/* Check whether "stream-format" is avcC mode */
allowed_caps =
gst_pad_get_allowed_caps (GST_VAAPI_PLUGIN_BASE_SRC_PAD (encode));
if (allowed_caps) {
const char *stream_format = NULL;
GstStructure *structure;
guint i, num_structures;
num_structures = gst_caps_get_size (allowed_caps);
for (i = 0; !stream_format && i < num_structures; i++) {
structure = gst_caps_get_structure (allowed_caps, i);
if (!gst_structure_has_field_typed (structure, "stream-format",
G_TYPE_STRING))
continue;
stream_format = gst_structure_get_string (structure, "stream-format");
}
encode->is_avc = stream_format && strcmp (stream_format, "avc") == 0;
gst_caps_unref (allowed_caps);
}
gst_caps_set_simple (caps, "stream-format", G_TYPE_STRING,
encode->is_avc ? "avc" : "byte-stream", NULL);
base_encode->need_codec_data = encode->is_avc;
/* XXX: update profile and level information */
return caps;
}
static GstVaapiEncoder *
gst_vaapiencode_h264_fei_alloc_encoder (GstVaapiEncode * base,
GstVaapiDisplay * display)
{
return gst_vaapi_encoder_h264_fei_new (display);
}
/* h264 NAL byte stream operations */
static guint8 *
_h264_byte_stream_next_nal (guint8 * buffer, guint32 len, guint32 * nal_size)
{
const guint8 *cur = buffer;
const guint8 *const end = buffer + len;
guint8 *nal_start = NULL;
guint32 flag = 0xFFFFFFFF;
guint32 nal_start_len = 0;
g_assert (buffer && nal_size);
if (len < 3) {
*nal_size = len;
nal_start = (len ? buffer : NULL);
return nal_start;
}
/*locate head postion */
if (!buffer[0] && !buffer[1]) {
if (buffer[2] == 1) { /* 0x000001 */
nal_start_len = 3;
} else if (!buffer[2] && len >= 4 && buffer[3] == 1) { /* 0x00000001 */
nal_start_len = 4;
}
}
nal_start = buffer + nal_start_len;
cur = nal_start;
/*find next nal start position */
while (cur < end) {
flag = ((flag << 8) | ((*cur++) & 0xFF));
if ((flag & 0x00FFFFFF) == 0x00000001) {
if (flag == 0x00000001)
*nal_size = cur - 4 - nal_start;
else
*nal_size = cur - 3 - nal_start;
break;
}
}
if (cur >= end) {
*nal_size = end - nal_start;
if (nal_start >= end) {
nal_start = NULL;
}
}
return nal_start;
}
static inline void
_start_code_to_size (guint8 nal_start_code[4], guint32 nal_size)
{
nal_start_code[0] = ((nal_size >> 24) & 0xFF);
nal_start_code[1] = ((nal_size >> 16) & 0xFF);
nal_start_code[2] = ((nal_size >> 8) & 0xFF);
nal_start_code[3] = (nal_size & 0xFF);
}
static gboolean
_h264_convert_byte_stream_to_avc (GstBuffer * buf)
{
GstMapInfo info;
guint32 nal_size;
guint8 *nal_start_code, *nal_body;
guint8 *frame_end;
g_assert (buf);
if (!gst_buffer_map (buf, &info, GST_MAP_READ | GST_MAP_WRITE))
return FALSE;
nal_start_code = info.data;
frame_end = info.data + info.size;
nal_size = 0;
while ((frame_end > nal_start_code) &&
(nal_body = _h264_byte_stream_next_nal (nal_start_code,
frame_end - nal_start_code, &nal_size)) != NULL) {
if (!nal_size)
goto error;
g_assert (nal_body - nal_start_code == 4);
_start_code_to_size (nal_start_code, nal_size);
nal_start_code = nal_body + nal_size;
}
gst_buffer_unmap (buf, &info);
return TRUE;
/* ERRORS */
error:
{
gst_buffer_unmap (buf, &info);
return FALSE;
}
}
static GstFlowReturn
alloc_buffer (GstVaapiEncode * encode,
GstVaapiCodedBuffer * coded_buf, GstBuffer ** outbuf_ptr)
{
GstVaapiEncoderH264Fei *const encoder =
GST_VAAPI_ENCODER_H264_FEI (encode->encoder);
GstBuffer *buf;
gint32 buf_size;
GstVaapiFeiMode fei_mode;
g_return_val_if_fail (coded_buf != NULL, GST_FLOW_ERROR);
g_return_val_if_fail (outbuf_ptr != NULL, GST_FLOW_ERROR);
fei_mode = gst_vaapi_encoder_h264_fei_get_function_mode (encoder);
if (fei_mode == GST_VAAPI_FEI_MODE_ENC)
buf_size = 4; /* just avoid zero size buffer allocation */
else
buf_size = gst_vaapi_coded_buffer_get_size (coded_buf);
if (buf_size <= 0)
goto error_invalid_buffer;
buf =
gst_video_encoder_allocate_output_buffer (GST_VIDEO_ENCODER_CAST (encode),
buf_size);
if (!buf)
goto error_create_buffer;
/* There is no encoded output content in ENC only mode */
if (fei_mode != GST_VAAPI_FEI_MODE_ENC) {
if (!gst_vaapi_coded_buffer_copy_into (buf, coded_buf))
goto error_copy_buffer;
}
*outbuf_ptr = buf;
return GST_FLOW_OK;
/* ERRORS */
error_invalid_buffer:
{
GST_ERROR ("invalid GstVaapiCodedBuffer size (%d bytes)", buf_size);
return GST_VAAPI_ENCODE_FLOW_MEM_ERROR;
}
error_create_buffer:
{
GST_ERROR ("failed to create output buffer of size %d", buf_size);
return GST_VAAPI_ENCODE_FLOW_MEM_ERROR;
}
error_copy_buffer:
{
GST_ERROR ("failed to copy GstVaapiCodedBuffer data");
gst_buffer_unref (buf);
return GST_VAAPI_ENCODE_FLOW_MEM_ERROR;
}
}
static GstFlowReturn
gst_vaapiencode_h264_fei_alloc_buffer (GstVaapiEncode * base_encode,
GstVaapiCodedBuffer * coded_buf, GstBuffer ** out_buffer_ptr)
{
GstVaapiEncodeH264Fei *const encode =
GST_VAAPIENCODE_H264_FEI_CAST (base_encode);
GstVaapiEncoderH264Fei *const encoder =
GST_VAAPI_ENCODER_H264_FEI (base_encode->encoder);
GstFlowReturn ret;
g_return_val_if_fail (encoder != NULL, GST_FLOW_ERROR);
ret = alloc_buffer (base_encode, coded_buf, out_buffer_ptr);
if (ret != GST_FLOW_OK)
return ret;
if (!encode->is_avc)
return GST_FLOW_OK;
/* Convert to avcC format */
if (!_h264_convert_byte_stream_to_avc (*out_buffer_ptr))
goto error_convert_buffer;
return GST_FLOW_OK;
/* ERRORS */
error_convert_buffer:
{
GST_ERROR ("failed to convert from bytestream format to avcC format");
gst_buffer_replace (out_buffer_ptr, NULL);
return GST_FLOW_ERROR;
}
}
static gboolean
gst_vaapiencode_h264_load_control_data (GstVaapiEncode * base_encode,
GstVaapiFeiVideoMeta * feimeta, GstVaapiSurfaceProxy * proxy)
{
if (feimeta != NULL) {
gst_vaapi_surface_proxy_set_fei_mb_code (proxy, feimeta->mbcode);
gst_vaapi_surface_proxy_set_fei_mv (proxy, feimeta->mv);
gst_vaapi_surface_proxy_set_fei_mv_predictor (proxy, feimeta->mvpred);
gst_vaapi_surface_proxy_set_fei_mb_control (proxy, feimeta->mbcntrl);
gst_vaapi_surface_proxy_set_fei_qp (proxy, feimeta->qp);
gst_vaapi_surface_proxy_set_fei_distortion (proxy, feimeta->dist);
}
return TRUE;
}
static GstVaapiFeiVideoMeta *
gst_vaapiencode_h264_save_stats_to_meta (GstVaapiEncode * base_encode,
GstVaapiCodedBufferProxy * proxy)
{
GstVaapiEncoderH264Fei *const encoder =
GST_VAAPI_ENCODER_H264_FEI (base_encode->encoder);
GstVaapiFeiVideoMeta *feimeta = NULL;
GstVaapiEncFeiMbCode *mbcode = NULL;
GstVaapiEncFeiMv *mv = NULL;
GstVaapiEncFeiDistortion *dist = NULL;
if (!gst_vaapi_encoder_h264_is_fei_stats_out_enabled (encoder))
return NULL;
feimeta = gst_vaapi_fei_video_meta_new ();
if (feimeta == NULL)
return NULL;
mbcode = gst_vaapi_coded_buffer_proxy_get_fei_mbcode (proxy);
if (mbcode)
feimeta->mbcode = (GstVaapiEncFeiMbCode *)
gst_vaapi_fei_codec_object_ref ((GstVaapiFeiCodecObject *) mbcode);
mv = gst_vaapi_coded_buffer_proxy_get_fei_mv (proxy);
if (mv)
feimeta->mv = (GstVaapiEncFeiMv *)
gst_vaapi_fei_codec_object_ref ((GstVaapiFeiCodecObject *) mv);
dist = gst_vaapi_coded_buffer_proxy_get_fei_distortion (proxy);
if (dist)
feimeta->dist = (GstVaapiEncFeiDistortion *)
gst_vaapi_fei_codec_object_ref ((GstVaapiFeiCodecObject *) dist);
return feimeta;
}
static void
gst_vaapiencode_h264_fei_class_init (GstVaapiEncodeH264FeiClass * klass)
{
GObjectClass *const object_class = G_OBJECT_CLASS (klass);
GstElementClass *const element_class = GST_ELEMENT_CLASS (klass);
GstVaapiEncodeClass *const encode_class = GST_VAAPIENCODE_CLASS (klass);
gpointer encoder_class;
GST_DEBUG_CATEGORY_INIT (gst_vaapi_h264_fei_encode_debug,
GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
object_class->finalize = gst_vaapiencode_h264_fei_finalize;
object_class->set_property = gst_vaapiencode_set_property_subclass;
object_class->get_property = gst_vaapiencode_get_property_subclass;
encode_class->set_config = gst_vaapiencode_h264_fei_set_config;
encode_class->get_caps = gst_vaapiencode_h264_fei_get_caps;
encode_class->alloc_encoder = gst_vaapiencode_h264_fei_alloc_encoder;
encode_class->alloc_buffer = gst_vaapiencode_h264_fei_alloc_buffer;
encode_class->load_control_data = gst_vaapiencode_h264_load_control_data;
encode_class->save_stats_to_meta = gst_vaapiencode_h264_save_stats_to_meta;
gst_element_class_set_static_metadata (element_class,
"VA-API H264 FEI Advanced encoder (Experimental)",
"Codec/Encoder/Video/Hardware",
GST_PLUGIN_DESC,
"Sreerenj Balachandran <sreerenj.balachandran@intel.com> ,"
"Yi A Wang <yi.a.wang@intel.com>");
/* sink pad */
gst_element_class_add_static_pad_template (element_class,
&gst_vaapiencode_h264_fei_sink_factory);
/* src pad */
gst_element_class_add_static_pad_template (element_class,
&gst_vaapiencode_h264_fei_src_factory);
encoder_class = g_type_class_ref (GST_TYPE_VAAPI_ENCODER_H264_FEI);
g_assert (encoder_class);
gst_vaapiencode_class_install_properties (encode_class, encoder_class);
g_type_class_unref (encoder_class);
}