--- /dev/null
+/*
+ * 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.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch-1.0 -ev videotestsrc num-buffers=60 ! vaapih264feienc fei-mode=ENC_PAK ! filesink location=test.264
+ * ]|
+ * </refsect2>
+ */
+
+#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_VIDEO_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)
+{
+ gst_vaapiencode_init_properties (GST_VAAPIENCODE_CAST (encode));
+}
+
+static void
+gst_vaapiencode_h264_fei_finalize (GObject * object)
+{
+ G_OBJECT_CLASS (gst_vaapiencode_h264_fei_parent_class)->finalize (object);
+}
+
+static void
+gst_vaapiencode_h264_fei_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec)
+{
+ GstVaapiEncodeClass *const encode_class = GST_VAAPIENCODE_GET_CLASS (object);
+ GstVaapiEncode *const base_encode = GST_VAAPIENCODE_CAST (object);
+
+ switch (prop_id) {
+ default:
+ if (!encode_class->set_property (base_encode, prop_id, value))
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_vaapiencode_h264_fei_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec)
+{
+ GstVaapiEncodeClass *const encode_class = GST_VAAPIENCODE_GET_CLASS (object);
+ GstVaapiEncode *const base_encode = GST_VAAPIENCODE_CAST (object);
+
+ switch (prop_id) {
+ default:
+ if (!encode_class->get_property (base_encode, prop_id, value))
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+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 (len >= 0 && 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);
+
+ 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_h264_fei_set_property;
+ object_class->get_property = gst_vaapiencode_h264_fei_get_property;
+
+ encode_class->get_properties =
+ gst_vaapi_encoder_h264_fei_get_default_properties;
+ 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",
+ 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);
+
+ gst_vaapiencode_class_init_properties (encode_class);
+}
projects / platform / upstream / gstreamer.git / commitdiff