libavcodec/qsvenc_hevc.c - third_party/ffmpeg - Git at Google

 /*
  * Intel MediaSDK QSV based HEVC encoder
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg 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.
  *
  * FFmpeg 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 FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */


 #include <stdint.h>
 #include <sys/types.h>

 #include <mfx/mfxvideo.h>

 #include "libavutil/common.h"
 #include "libavutil/opt.h"

 #include "avcodec.h"
 #include "bytestream.h"
 #include "get_bits.h"
 #include "hevc.h"
 #include "hevcdec.h"
 #include "h2645_parse.h"
 #include "internal.h"
 #include "qsv.h"
 #include "qsv_internal.h"
 #include "qsvenc.h"

 enum LoadPlugin {
     LOAD_PLUGIN_NONE,
     LOAD_PLUGIN_HEVC_SW,
     LOAD_PLUGIN_HEVC_HW,
 };

 typedef struct QSVHEVCEncContext {
     AVClass *class;
     QSVEncContext qsv;
     int load_plugin;
 } QSVHEVCEncContext;

 static int generate_fake_vps(QSVEncContext *q, AVCodecContext *avctx)
 {
     GetByteContext gbc;
     PutByteContext pbc;

     GetBitContext gb;
     H2645RBSP sps_rbsp = { NULL };
     H2645NAL sps_nal = { NULL };
     HEVCSPS sps = { 0 };
     HEVCVPS vps = { 0 };
     uint8_t vps_buf[128], vps_rbsp_buf[128];
     uint8_t *new_extradata;
     unsigned int sps_id;
     int ret, i, type, vps_size;

     if (!avctx->extradata_size) {
         av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx\n");
         return AVERROR_UNKNOWN;
     }

     av_fast_padded_malloc(&sps_rbsp.rbsp_buffer, &sps_rbsp.rbsp_buffer_alloc_size, avctx->extradata_size);
     if (!sps_rbsp.rbsp_buffer)
         return AVERROR(ENOMEM);

     /* parse the SPS */
     ret = ff_h2645_extract_rbsp(avctx->extradata + 4, avctx->extradata_size - 4, &sps_rbsp, &sps_nal, 1);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error unescaping the SPS buffer\n");
         return ret;
     }

     ret = init_get_bits8(&gb, sps_nal.data, sps_nal.size);
     if (ret < 0) {
         av_freep(&sps_rbsp.rbsp_buffer);
         return ret;
     }

     get_bits(&gb, 1);
     type = get_bits(&gb, 6);
     if (type != HEVC_NAL_SPS) {
         av_log(avctx, AV_LOG_ERROR, "Unexpected NAL type in the extradata: %d\n",
                type);
         av_freep(&sps_rbsp.rbsp_buffer);
         return AVERROR_INVALIDDATA;
     }
     get_bits(&gb, 9);

     ret = ff_hevc_parse_sps(&sps, &gb, &sps_id, 0, NULL, avctx);
     av_freep(&sps_rbsp.rbsp_buffer);
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error parsing the SPS\n");
         return ret;
     }

     /* generate the VPS */
     vps.vps_max_layers     = 1;
     vps.vps_max_sub_layers = sps.max_sub_layers;
     memcpy(&vps.ptl, &sps.ptl, sizeof(vps.ptl));
     vps.vps_sub_layer_ordering_info_present_flag = 1;
     for (i = 0; i < HEVC_MAX_SUB_LAYERS; i++) {
         vps.vps_max_dec_pic_buffering[i] = sps.temporal_layer[i].max_dec_pic_buffering;
         vps.vps_num_reorder_pics[i]      = sps.temporal_layer[i].num_reorder_pics;
         vps.vps_max_latency_increase[i]  = sps.temporal_layer[i].max_latency_increase;
     }

     vps.vps_num_layer_sets                  = 1;
     vps.vps_timing_info_present_flag        = sps.vui.vui_timing_info_present_flag;
     vps.vps_num_units_in_tick               = sps.vui.vui_num_units_in_tick;
     vps.vps_time_scale                      = sps.vui.vui_time_scale;
     vps.vps_poc_proportional_to_timing_flag = sps.vui.vui_poc_proportional_to_timing_flag;
     vps.vps_num_ticks_poc_diff_one          = sps.vui.vui_num_ticks_poc_diff_one_minus1 + 1;

     /* generate the encoded RBSP form of the VPS */
     ret = ff_hevc_encode_nal_vps(&vps, sps.vps_id, vps_rbsp_buf, sizeof(vps_rbsp_buf));
     if (ret < 0) {
         av_log(avctx, AV_LOG_ERROR, "Error writing the VPS\n");
         return ret;
     }

     /* escape and add the startcode */
     bytestream2_init(&gbc, vps_rbsp_buf, ret);
     bytestream2_init_writer(&pbc, vps_buf, sizeof(vps_buf));

     bytestream2_put_be32(&pbc, 1);                 // startcode
     bytestream2_put_byte(&pbc, HEVC_NAL_VPS << 1); // NAL
     bytestream2_put_byte(&pbc, 1);                 // header

     while (bytestream2_get_bytes_left(&gbc)) {
         uint32_t b = bytestream2_peek_be24(&gbc);
         if (b <= 3) {
             bytestream2_put_be24(&pbc, 3);
             bytestream2_skip(&gbc, 2);
         } else
             bytestream2_put_byte(&pbc, bytestream2_get_byte(&gbc));
     }

     vps_size = bytestream2_tell_p(&pbc);
     new_extradata = av_mallocz(vps_size + avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
     if (!new_extradata)
         return AVERROR(ENOMEM);
     memcpy(new_extradata, vps_buf, vps_size);
     memcpy(new_extradata + vps_size, avctx->extradata, avctx->extradata_size);

     av_freep(&avctx->extradata);
     avctx->extradata       = new_extradata;
     avctx->extradata_size += vps_size;

     return 0;
 }

 static av_cold int qsv_enc_init(AVCodecContext *avctx)
 {
     QSVHEVCEncContext *q = avctx->priv_data;
     int ret;

     if (q->load_plugin != LOAD_PLUGIN_NONE) {
         static const char * const uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
         static const char * const uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";

         if (q->qsv.load_plugins[0]) {
             av_log(avctx, AV_LOG_WARNING,
                    "load_plugins is not empty, but load_plugin is not set to 'none'."
                    "The load_plugin value will be ignored.\n");
         } else {
             av_freep(&q->qsv.load_plugins);

             if (q->load_plugin == LOAD_PLUGIN_HEVC_SW)
                 q->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
             else
                 q->qsv.load_plugins = av_strdup(uid_hevcenc_hw);

             if (!q->qsv.load_plugins)
                 return AVERROR(ENOMEM);
         }
     }

     // HEVC and H264 meaning of the value is shifted by 1, make it consistent
     q->qsv.idr_interval++;

     ret = ff_qsv_enc_init(avctx, &q->qsv);
     if (ret < 0)
         return ret;

     ret = generate_fake_vps(&q->qsv, avctx);
     if (ret < 0) {
         ff_qsv_enc_close(avctx, &q->qsv);
         return ret;
     }

     return 0;
 }

 static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt,
                          const AVFrame *frame, int *got_packet)
 {
     QSVHEVCEncContext *q = avctx->priv_data;

     return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet);
 }

 static av_cold int qsv_enc_close(AVCodecContext *avctx)
 {
     QSVHEVCEncContext *q = avctx->priv_data;

     return ff_qsv_enc_close(avctx, &q->qsv);
 }

 #if defined(_WIN32)
 #define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_SW
 #else
 #define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_HW
 #endif

 #define OFFSET(x) offsetof(QSVHEVCEncContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
     QSV_COMMON_OPTS

     { "idr_interval", "Distance (in I-frames) between IDR frames", OFFSET(qsv.idr_interval), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, INT_MAX, VE, "idr_interval" },
     { "begin_only", "Output an IDR-frame only at the beginning of the stream", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, "idr_interval" },
     { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_DEFAULT }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VE, "load_plugin" },
     { "none",     NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE },    0, 0, VE, "load_plugin" },
     { "hevc_sw",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VE, "load_plugin" },
     { "hevc_hw",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VE, "load_plugin" },

     { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
         OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VE },

     { "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
     { "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN      }, INT_MIN, INT_MAX,     VE, "profile" },
     { "main",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN    }, INT_MIN, INT_MAX,     VE, "profile" },
     { "main10",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10  }, INT_MIN, INT_MAX,     VE, "profile" },
     { "mainsp",  NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP  }, INT_MIN, INT_MAX,     VE, "profile" },

     { NULL },
 };

 static const AVClass class = {
     .class_name = "hevc_qsv encoder",
     .item_name  = av_default_item_name,
     .option     = options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 static const AVCodecDefault qsv_enc_defaults[] = {
     { "b",         "1M"    },
     { "refs",      "0"     },
     // same as the x264 default
     { "g",         "248"   },
     { "bf",        "8"     },

     { "flags",     "+cgop" },
 #if FF_API_PRIVATE_OPT
     { "b_strategy", "-1"   },
 #endif
     { NULL },
 };

 AVCodec ff_hevc_qsv_encoder = {
     .name           = "hevc_qsv",
     .long_name      = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
     .priv_data_size = sizeof(QSVHEVCEncContext),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_HEVC,
     .init           = qsv_enc_init,
     .encode2        = qsv_enc_frame,
     .close          = qsv_enc_close,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HYBRID,
     .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
                                                     AV_PIX_FMT_P010,
                                                     AV_PIX_FMT_QSV,
                                                     AV_PIX_FMT_NONE },
     .priv_class     = &class,
     .defaults       = qsv_enc_defaults,
     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .wrapper_name   = "qsv",
 };
	/*
	* Intel MediaSDK QSV based HEVC encoder
	*
	* This file is part of FFmpeg.
	*
	* FFmpeg 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.
	*
	* FFmpeg 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 FFmpeg; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	*/


	#include <stdint.h>
	#include <sys/types.h>

	#include <mfx/mfxvideo.h>

	#include "libavutil/common.h"
	#include "libavutil/opt.h"

	#include "avcodec.h"
	#include "bytestream.h"
	#include "get_bits.h"
	#include "hevc.h"
	#include "hevcdec.h"
	#include "h2645_parse.h"
	#include "internal.h"
	#include "qsv.h"
	#include "qsv_internal.h"
	#include "qsvenc.h"

	enum LoadPlugin {
	LOAD_PLUGIN_NONE,
	LOAD_PLUGIN_HEVC_SW,
	LOAD_PLUGIN_HEVC_HW,
	};

	typedef struct QSVHEVCEncContext {
	AVClass *class;
	QSVEncContext qsv;
	int load_plugin;
	} QSVHEVCEncContext;

	static int generate_fake_vps(QSVEncContext q, AVCodecContext avctx)
	{
	GetByteContext gbc;
	PutByteContext pbc;

	GetBitContext gb;
	H2645RBSP sps_rbsp = { NULL };
	H2645NAL sps_nal = { NULL };
	HEVCSPS sps = { 0 };
	HEVCVPS vps = { 0 };
	uint8_t vps_buf[128], vps_rbsp_buf[128];
	uint8_t *new_extradata;
	unsigned int sps_id;
	int ret, i, type, vps_size;

	if (!avctx->extradata_size) {
	av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx\n");
	return AVERROR_UNKNOWN;
	}

	av_fast_padded_malloc(&sps_rbsp.rbsp_buffer, &sps_rbsp.rbsp_buffer_alloc_size, avctx->extradata_size);
	if (!sps_rbsp.rbsp_buffer)
	return AVERROR(ENOMEM);

	/* parse the SPS */
	ret = ff_h2645_extract_rbsp(avctx->extradata + 4, avctx->extradata_size - 4, &sps_rbsp, &sps_nal, 1);
	if (ret < 0) {
	av_log(avctx, AV_LOG_ERROR, "Error unescaping the SPS buffer\n");
	return ret;
	}

	ret = init_get_bits8(&gb, sps_nal.data, sps_nal.size);
	if (ret < 0) {
	av_freep(&sps_rbsp.rbsp_buffer);
	return ret;
	}

	get_bits(&gb, 1);
	type = get_bits(&gb, 6);
	if (type != HEVC_NAL_SPS) {
	av_log(avctx, AV_LOG_ERROR, "Unexpected NAL type in the extradata: %d\n",
	type);
	av_freep(&sps_rbsp.rbsp_buffer);
	return AVERROR_INVALIDDATA;
	}
	get_bits(&gb, 9);

	ret = ff_hevc_parse_sps(&sps, &gb, &sps_id, 0, NULL, avctx);
	av_freep(&sps_rbsp.rbsp_buffer);
	if (ret < 0) {
	av_log(avctx, AV_LOG_ERROR, "Error parsing the SPS\n");
	return ret;
	}

	/* generate the VPS */
	vps.vps_max_layers = 1;
	vps.vps_max_sub_layers = sps.max_sub_layers;
	memcpy(&vps.ptl, &sps.ptl, sizeof(vps.ptl));
	vps.vps_sub_layer_ordering_info_present_flag = 1;
	for (i = 0; i < HEVC_MAX_SUB_LAYERS; i++) {
	vps.vps_max_dec_pic_buffering[i] = sps.temporal_layer[i].max_dec_pic_buffering;
	vps.vps_num_reorder_pics[i] = sps.temporal_layer[i].num_reorder_pics;
	vps.vps_max_latency_increase[i] = sps.temporal_layer[i].max_latency_increase;
	}

	vps.vps_num_layer_sets = 1;
	vps.vps_timing_info_present_flag = sps.vui.vui_timing_info_present_flag;
	vps.vps_num_units_in_tick = sps.vui.vui_num_units_in_tick;
	vps.vps_time_scale = sps.vui.vui_time_scale;
	vps.vps_poc_proportional_to_timing_flag = sps.vui.vui_poc_proportional_to_timing_flag;
	vps.vps_num_ticks_poc_diff_one = sps.vui.vui_num_ticks_poc_diff_one_minus1 + 1;

	/* generate the encoded RBSP form of the VPS */
	ret = ff_hevc_encode_nal_vps(&vps, sps.vps_id, vps_rbsp_buf, sizeof(vps_rbsp_buf));
	if (ret < 0) {
	av_log(avctx, AV_LOG_ERROR, "Error writing the VPS\n");
	return ret;
	}

	/* escape and add the startcode */
	bytestream2_init(&gbc, vps_rbsp_buf, ret);
	bytestream2_init_writer(&pbc, vps_buf, sizeof(vps_buf));

	bytestream2_put_be32(&pbc, 1); // startcode
	bytestream2_put_byte(&pbc, HEVC_NAL_VPS << 1); // NAL
	bytestream2_put_byte(&pbc, 1); // header

	while (bytestream2_get_bytes_left(&gbc)) {
	uint32_t b = bytestream2_peek_be24(&gbc);
	if (b <= 3) {
	bytestream2_put_be24(&pbc, 3);
	bytestream2_skip(&gbc, 2);
	} else
	bytestream2_put_byte(&pbc, bytestream2_get_byte(&gbc));
	}

	vps_size = bytestream2_tell_p(&pbc);
	new_extradata = av_mallocz(vps_size + avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
	if (!new_extradata)
	return AVERROR(ENOMEM);
	memcpy(new_extradata, vps_buf, vps_size);
	memcpy(new_extradata + vps_size, avctx->extradata, avctx->extradata_size);

	av_freep(&avctx->extradata);
	avctx->extradata = new_extradata;
	avctx->extradata_size += vps_size;

	return 0;
	}

	static av_cold int qsv_enc_init(AVCodecContext *avctx)
	{
	QSVHEVCEncContext *q = avctx->priv_data;
	int ret;

	if (q->load_plugin != LOAD_PLUGIN_NONE) {
	static const char * const uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
	static const char * const uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";

	if (q->qsv.load_plugins[0]) {
	av_log(avctx, AV_LOG_WARNING,
	"load_plugins is not empty, but load_plugin is not set to 'none'."
	"The load_plugin value will be ignored.\n");
	} else {
	av_freep(&q->qsv.load_plugins);

	if (q->load_plugin == LOAD_PLUGIN_HEVC_SW)
	q->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
	else
	q->qsv.load_plugins = av_strdup(uid_hevcenc_hw);

	if (!q->qsv.load_plugins)
	return AVERROR(ENOMEM);
	}
	}

	// HEVC and H264 meaning of the value is shifted by 1, make it consistent
	q->qsv.idr_interval++;

	ret = ff_qsv_enc_init(avctx, &q->qsv);
	if (ret < 0)
	return ret;

	ret = generate_fake_vps(&q->qsv, avctx);
	if (ret < 0) {
	ff_qsv_enc_close(avctx, &q->qsv);
	return ret;
	}

	return 0;
	}

	static int qsv_enc_frame(AVCodecContext avctx, AVPacket pkt,
	const AVFrame frame, int got_packet)
	{
	QSVHEVCEncContext *q = avctx->priv_data;

	return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet);
	}

	static av_cold int qsv_enc_close(AVCodecContext *avctx)
	{
	QSVHEVCEncContext *q = avctx->priv_data;

	return ff_qsv_enc_close(avctx, &q->qsv);
	}

	#if defined(_WIN32)
	#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_SW
	#else
	#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_HW
	#endif

	#define OFFSET(x) offsetof(QSVHEVCEncContext, x)
	#define VE AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM
	static const AVOption options[] = {
	QSV_COMMON_OPTS

	{ "idr_interval", "Distance (in I-frames) between IDR frames", OFFSET(qsv.idr_interval), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, INT_MAX, VE, "idr_interval" },
	{ "begin_only", "Output an IDR-frame only at the beginning of the stream", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, "idr_interval" },
	{ "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_DEFAULT }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VE, "load_plugin" },
	{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VE, "load_plugin" },
	{ "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VE, "load_plugin" },
	{ "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VE, "load_plugin" },

	{ "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
	OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VE },

	{ "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
	{ "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, VE, "profile" },
	{ "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
	{ "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
	{ "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP }, INT_MIN, INT_MAX, VE, "profile" },

	{ NULL },
	};

	static const AVClass class = {
	.class_name = "hevc_qsv encoder",
	.item_name = av_default_item_name,
	.option = options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	static const AVCodecDefault qsv_enc_defaults[] = {
	{ "b", "1M" },
	{ "refs", "0" },
	// same as the x264 default
	{ "g", "248" },
	{ "bf", "8" },

	{ "flags", "+cgop" },
	#if FF_API_PRIVATE_OPT
	{ "b_strategy", "-1" },
	#endif
	{ NULL },
	};

	AVCodec ff_hevc_qsv_encoder = {
	.name = "hevc_qsv",
	.long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
	.priv_data_size = sizeof(QSVHEVCEncContext),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_HEVC,
	.init = qsv_enc_init,
	.encode2 = qsv_enc_frame,
	.close = qsv_enc_close,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_HYBRID,
	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
	AV_PIX_FMT_P010,
	AV_PIX_FMT_QSV,
	AV_PIX_FMT_NONE },
	.priv_class = &class,
	.defaults = qsv_enc_defaults,
	.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
	.wrapper_name = "qsv",
	};