libavcodec/vaapi_encode_vp8.c - third_party/ffmpeg - Git at Google

 /*
  * 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 <va/va.h>
 #include <va/va_enc_vp8.h>

 #include "libavutil/avassert.h"
 #include "libavutil/common.h"
 #include "libavutil/internal.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixfmt.h"

 #include "avcodec.h"
 #include "internal.h"
 #include "vaapi_encode.h"
 #include "vp8.h"


 typedef struct VAAPIEncodeVP8Context {
     VAAPIEncodeContext common;

     // User options.
     int loop_filter_level;
     int loop_filter_sharpness;

     // Derived settings.
     int q_index_i;
     int q_index_p;
 } VAAPIEncodeVP8Context;


 #define vseq_var(name)     vseq->name, name
 #define vseq_field(name)   vseq->seq_fields.bits.name, name
 #define vpic_var(name)     vpic->name, name
 #define vpic_field(name)   vpic->pic_fields.bits.name, name


 static int vaapi_encode_vp8_init_sequence_params(AVCodecContext *avctx)
 {
     VAAPIEncodeContext               *ctx = avctx->priv_data;
     VAEncSequenceParameterBufferVP8 *vseq = ctx->codec_sequence_params;

     vseq->frame_width  = avctx->width;
     vseq->frame_height = avctx->height;

     vseq->frame_width_scale  = 0;
     vseq->frame_height_scale = 0;

     vseq->error_resilient = 0;
     vseq->kf_auto = 0;

     if (!(ctx->va_rc_mode & VA_RC_CQP)) {
         vseq->bits_per_second = ctx->va_bit_rate;
         vseq->intra_period    = ctx->gop_size;
     }

     return 0;
 }

 static int vaapi_encode_vp8_init_picture_params(AVCodecContext *avctx,
                                                 VAAPIEncodePicture *pic)
 {
     VAAPIEncodeVP8Context          *priv = avctx->priv_data;
     VAEncPictureParameterBufferVP8 *vpic = pic->codec_picture_params;
     int i;

     vpic->reconstructed_frame = pic->recon_surface;

     vpic->coded_buf = pic->output_buffer;

     switch (pic->type) {
     case PICTURE_TYPE_IDR:
     case PICTURE_TYPE_I:
         av_assert0(pic->nb_refs == 0);
         vpic->ref_flags.bits.force_kf = 1;
         vpic->ref_last_frame =
         vpic->ref_gf_frame   =
         vpic->ref_arf_frame  =
             VA_INVALID_SURFACE;
         break;
     case PICTURE_TYPE_P:
         av_assert0(pic->nb_refs == 1);
         vpic->ref_flags.bits.no_ref_last = 0;
         vpic->ref_flags.bits.no_ref_gf   = 1;
         vpic->ref_flags.bits.no_ref_arf  = 1;
         vpic->ref_last_frame =
         vpic->ref_gf_frame   =
         vpic->ref_arf_frame  =
             pic->refs[0]->recon_surface;
         break;
     default:
         av_assert0(0 && "invalid picture type");
     }

     vpic->pic_flags.bits.frame_type = (pic->type != PICTURE_TYPE_IDR);
     vpic->pic_flags.bits.show_frame = 1;

     vpic->pic_flags.bits.refresh_last            = 1;
     vpic->pic_flags.bits.refresh_golden_frame    = 1;
     vpic->pic_flags.bits.refresh_alternate_frame = 1;

     vpic->pic_flags.bits.version = 0;
     vpic->pic_flags.bits.loop_filter_type = 0;
     for (i = 0; i < 4; i++)
         vpic->loop_filter_level[i] = priv->loop_filter_level;
     vpic->sharpness_level = priv->loop_filter_sharpness;

     vpic->clamp_qindex_low  = 0;
     vpic->clamp_qindex_high = 127;

     return 0;
 }

 static int vaapi_encode_vp8_write_quant_table(AVCodecContext *avctx,
                                               VAAPIEncodePicture *pic,
                                               int index, int *type,
                                               char *data, size_t *data_len)
 {
     VAAPIEncodeVP8Context *priv = avctx->priv_data;
     VAQMatrixBufferVP8 quant;
     int i, q;

     if (index > 0)
         return AVERROR_EOF;

     if (*data_len < sizeof(quant))
         return AVERROR(EINVAL);
     *type     = VAQMatrixBufferType;
     *data_len = sizeof(quant);

     memset(&quant, 0, sizeof(quant));

     if (pic->type == PICTURE_TYPE_P)
         q = priv->q_index_p;
     else
         q = priv->q_index_i;

     for (i = 0; i < 4; i++)
         quant.quantization_index[i] = q;
     for (i = 0; i < 5; i++)
         quant.quantization_index_delta[i] = 0;

     memcpy(data, &quant, sizeof(quant));
     return 0;
 }

 static av_cold int vaapi_encode_vp8_configure(AVCodecContext *avctx)
 {
     VAAPIEncodeVP8Context *priv = avctx->priv_data;

     priv->q_index_p = av_clip(avctx->global_quality, 0, VP8_MAX_QUANT);
     if (avctx->i_quant_factor > 0.0)
         priv->q_index_i = av_clip((avctx->global_quality *
                                    avctx->i_quant_factor +
                                    avctx->i_quant_offset) + 0.5,
                                   0, VP8_MAX_QUANT);
     else
         priv->q_index_i = priv->q_index_p;

     return 0;
 }

 static const VAAPIEncodeProfile vaapi_encode_vp8_profiles[] = {
     { 0 /* VP8 has no profiles */, 8, 3, 1, 1, VAProfileVP8Version0_3 },
     { FF_PROFILE_UNKNOWN }
 };

 static const VAAPIEncodeType vaapi_encode_type_vp8 = {
     .profiles              = vaapi_encode_vp8_profiles,

     .configure             = &vaapi_encode_vp8_configure,

     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferVP8),
     .init_sequence_params  = &vaapi_encode_vp8_init_sequence_params,

     .picture_params_size   = sizeof(VAEncPictureParameterBufferVP8),
     .init_picture_params   = &vaapi_encode_vp8_init_picture_params,

     .write_extra_buffer    = &vaapi_encode_vp8_write_quant_table,
 };

 static av_cold int vaapi_encode_vp8_init(AVCodecContext *avctx)
 {
     VAAPIEncodeContext *ctx = avctx->priv_data;

     ctx->codec = &vaapi_encode_type_vp8;

     // No packed headers are currently desired.  VP8 has no metadata
     // which would be useful to write, and no existing driver supports
     // adding them anyway.
     ctx->desired_packed_headers = 0;

     ctx->surface_width  = FFALIGN(avctx->width,  16);
     ctx->surface_height = FFALIGN(avctx->height, 16);

     return ff_vaapi_encode_init(avctx);
 }

 #define OFFSET(x) offsetof(VAAPIEncodeVP8Context, x)
 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 static const AVOption vaapi_encode_vp8_options[] = {
     VAAPI_ENCODE_COMMON_OPTIONS,
     { "loop_filter_level", "Loop filter level",
       OFFSET(loop_filter_level), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 63, FLAGS },
     { "loop_filter_sharpness", "Loop filter sharpness",
       OFFSET(loop_filter_sharpness), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 15, FLAGS },
     { NULL },
 };

 static const AVCodecDefault vaapi_encode_vp8_defaults[] = {
     { "b",              "0"   },
     { "bf",             "0"   },
     { "g",              "120" },
     { "global_quality", "40"  },
     { "qmin",           "-1"  },
     { "qmax",           "-1"  },
     { NULL },
 };

 static const AVClass vaapi_encode_vp8_class = {
     .class_name = "vp8_vaapi",
     .item_name  = av_default_item_name,
     .option     = vaapi_encode_vp8_options,
     .version    = LIBAVUTIL_VERSION_INT,
 };

 AVCodec ff_vp8_vaapi_encoder = {
     .name           = "vp8_vaapi",
     .long_name      = NULL_IF_CONFIG_SMALL("VP8 (VAAPI)"),
     .type           = AVMEDIA_TYPE_VIDEO,
     .id             = AV_CODEC_ID_VP8,
     .priv_data_size = sizeof(VAAPIEncodeVP8Context),
     .init           = &vaapi_encode_vp8_init,
     .encode2        = &ff_vaapi_encode2,
     .close          = &ff_vaapi_encode_close,
     .priv_class     = &vaapi_encode_vp8_class,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
     .defaults       = vaapi_encode_vp8_defaults,
     .pix_fmts = (const enum AVPixelFormat[]) {
         AV_PIX_FMT_VAAPI,
         AV_PIX_FMT_NONE,
     },
     .wrapper_name   = "vaapi",
 };
	/*
	* 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 <va/va.h>
	#include <va/va_enc_vp8.h>

	#include "libavutil/avassert.h"
	#include "libavutil/common.h"
	#include "libavutil/internal.h"
	#include "libavutil/opt.h"
	#include "libavutil/pixfmt.h"

	#include "avcodec.h"
	#include "internal.h"
	#include "vaapi_encode.h"
	#include "vp8.h"


	typedef struct VAAPIEncodeVP8Context {
	VAAPIEncodeContext common;

	// User options.
	int loop_filter_level;
	int loop_filter_sharpness;

	// Derived settings.
	int q_index_i;
	int q_index_p;
	} VAAPIEncodeVP8Context;


	#define vseq_var(name) vseq->name, name
	#define vseq_field(name) vseq->seq_fields.bits.name, name
	#define vpic_var(name) vpic->name, name
	#define vpic_field(name) vpic->pic_fields.bits.name, name


	static int vaapi_encode_vp8_init_sequence_params(AVCodecContext *avctx)
	{
	VAAPIEncodeContext *ctx = avctx->priv_data;
	VAEncSequenceParameterBufferVP8 *vseq = ctx->codec_sequence_params;

	vseq->frame_width = avctx->width;
	vseq->frame_height = avctx->height;

	vseq->frame_width_scale = 0;
	vseq->frame_height_scale = 0;

	vseq->error_resilient = 0;
	vseq->kf_auto = 0;

	if (!(ctx->va_rc_mode & VA_RC_CQP)) {
	vseq->bits_per_second = ctx->va_bit_rate;
	vseq->intra_period = ctx->gop_size;
	}

	return 0;
	}

	static int vaapi_encode_vp8_init_picture_params(AVCodecContext *avctx,
	VAAPIEncodePicture *pic)
	{
	VAAPIEncodeVP8Context *priv = avctx->priv_data;
	VAEncPictureParameterBufferVP8 *vpic = pic->codec_picture_params;
	int i;

	vpic->reconstructed_frame = pic->recon_surface;

	vpic->coded_buf = pic->output_buffer;

	switch (pic->type) {
	case PICTURE_TYPE_IDR:
	case PICTURE_TYPE_I:
	av_assert0(pic->nb_refs == 0);
	vpic->ref_flags.bits.force_kf = 1;
	vpic->ref_last_frame =
	vpic->ref_gf_frame =
	vpic->ref_arf_frame =
	VA_INVALID_SURFACE;
	break;
	case PICTURE_TYPE_P:
	av_assert0(pic->nb_refs == 1);
	vpic->ref_flags.bits.no_ref_last = 0;
	vpic->ref_flags.bits.no_ref_gf = 1;
	vpic->ref_flags.bits.no_ref_arf = 1;
	vpic->ref_last_frame =
	vpic->ref_gf_frame =
	vpic->ref_arf_frame =
	pic->refs[0]->recon_surface;
	break;
	default:
	av_assert0(0 && "invalid picture type");
	}

	vpic->pic_flags.bits.frame_type = (pic->type != PICTURE_TYPE_IDR);
	vpic->pic_flags.bits.show_frame = 1;

	vpic->pic_flags.bits.refresh_last = 1;
	vpic->pic_flags.bits.refresh_golden_frame = 1;
	vpic->pic_flags.bits.refresh_alternate_frame = 1;

	vpic->pic_flags.bits.version = 0;
	vpic->pic_flags.bits.loop_filter_type = 0;
	for (i = 0; i < 4; i++)
	vpic->loop_filter_level[i] = priv->loop_filter_level;
	vpic->sharpness_level = priv->loop_filter_sharpness;

	vpic->clamp_qindex_low = 0;
	vpic->clamp_qindex_high = 127;

	return 0;
	}

	static int vaapi_encode_vp8_write_quant_table(AVCodecContext *avctx,
	VAAPIEncodePicture *pic,
	int index, int *type,
	char data, size_t data_len)
	{
	VAAPIEncodeVP8Context *priv = avctx->priv_data;
	VAQMatrixBufferVP8 quant;
	int i, q;

	if (index > 0)
	return AVERROR_EOF;

	if (*data_len < sizeof(quant))
	return AVERROR(EINVAL);
	*type = VAQMatrixBufferType;
	*data_len = sizeof(quant);

	memset(&quant, 0, sizeof(quant));

	if (pic->type == PICTURE_TYPE_P)
	q = priv->q_index_p;
	else
	q = priv->q_index_i;

	for (i = 0; i < 4; i++)
	quant.quantization_index[i] = q;
	for (i = 0; i < 5; i++)
	quant.quantization_index_delta[i] = 0;

	memcpy(data, &quant, sizeof(quant));
	return 0;
	}

	static av_cold int vaapi_encode_vp8_configure(AVCodecContext *avctx)
	{
	VAAPIEncodeVP8Context *priv = avctx->priv_data;

	priv->q_index_p = av_clip(avctx->global_quality, 0, VP8_MAX_QUANT);
	if (avctx->i_quant_factor > 0.0)
	priv->q_index_i = av_clip((avctx->global_quality *
	avctx->i_quant_factor +
	avctx->i_quant_offset) + 0.5,
	0, VP8_MAX_QUANT);
	else
	priv->q_index_i = priv->q_index_p;

	return 0;
	}

	static const VAAPIEncodeProfile vaapi_encode_vp8_profiles[] = {
	{ 0 /* VP8 has no profiles */, 8, 3, 1, 1, VAProfileVP8Version0_3 },
	{ FF_PROFILE_UNKNOWN }
	};

	static const VAAPIEncodeType vaapi_encode_type_vp8 = {
	.profiles = vaapi_encode_vp8_profiles,

	.configure = &vaapi_encode_vp8_configure,

	.sequence_params_size = sizeof(VAEncSequenceParameterBufferVP8),
	.init_sequence_params = &vaapi_encode_vp8_init_sequence_params,

	.picture_params_size = sizeof(VAEncPictureParameterBufferVP8),
	.init_picture_params = &vaapi_encode_vp8_init_picture_params,

	.write_extra_buffer = &vaapi_encode_vp8_write_quant_table,
	};

	static av_cold int vaapi_encode_vp8_init(AVCodecContext *avctx)
	{
	VAAPIEncodeContext *ctx = avctx->priv_data;

	ctx->codec = &vaapi_encode_type_vp8;

	// No packed headers are currently desired. VP8 has no metadata
	// which would be useful to write, and no existing driver supports
	// adding them anyway.
	ctx->desired_packed_headers = 0;

	ctx->surface_width = FFALIGN(avctx->width, 16);
	ctx->surface_height = FFALIGN(avctx->height, 16);

	return ff_vaapi_encode_init(avctx);
	}

	#define OFFSET(x) offsetof(VAAPIEncodeVP8Context, x)
	#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM)
	static const AVOption vaapi_encode_vp8_options[] = {
	VAAPI_ENCODE_COMMON_OPTIONS,
	{ "loop_filter_level", "Loop filter level",
	OFFSET(loop_filter_level), AV_OPT_TYPE_INT, { .i64 = 16 }, 0, 63, FLAGS },
	{ "loop_filter_sharpness", "Loop filter sharpness",
	OFFSET(loop_filter_sharpness), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 15, FLAGS },
	{ NULL },
	};

	static const AVCodecDefault vaapi_encode_vp8_defaults[] = {
	{ "b", "0" },
	{ "bf", "0" },
	{ "g", "120" },
	{ "global_quality", "40" },
	{ "qmin", "-1" },
	{ "qmax", "-1" },
	{ NULL },
	};

	static const AVClass vaapi_encode_vp8_class = {
	.class_name = "vp8_vaapi",
	.item_name = av_default_item_name,
	.option = vaapi_encode_vp8_options,
	.version = LIBAVUTIL_VERSION_INT,
	};

	AVCodec ff_vp8_vaapi_encoder = {
	.name = "vp8_vaapi",
	.long_name = NULL_IF_CONFIG_SMALL("VP8 (VAAPI)"),
	.type = AVMEDIA_TYPE_VIDEO,
	.id = AV_CODEC_ID_VP8,
	.priv_data_size = sizeof(VAAPIEncodeVP8Context),
	.init = &vaapi_encode_vp8_init,
	.encode2 = &ff_vaapi_encode2,
	.close = &ff_vaapi_encode_close,
	.priv_class = &vaapi_encode_vp8_class,
	.capabilities = AV_CODEC_CAP_DELAY \| AV_CODEC_CAP_HARDWARE,
	.defaults = vaapi_encode_vp8_defaults,
	.pix_fmts = (const enum AVPixelFormat[]) {
	AV_PIX_FMT_VAAPI,
	AV_PIX_FMT_NONE,
	},
	.wrapper_name = "vaapi",
	};