712 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			712 lines
		
	
	
		
			24 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|  * This file is part of FFmpeg.
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|  *
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|  * FFmpeg is free software; you can redistribute it and/or
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|  * modify it under the terms of the GNU Lesser General Public
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|  * License as published by the Free Software Foundation; either
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|  * version 2.1 of the License, or (at your option) any later version.
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|  *
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|  * FFmpeg is distributed in the hope that it will be useful,
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|  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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|  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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|  * Lesser General Public License for more details.
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|  *
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|  * You should have received a copy of the GNU Lesser General Public
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|  * License along with FFmpeg; if not, write to the Free Software
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|  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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|  */
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| 
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| #include <va/va.h>
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| #include <va/va_enc_mpeg2.h>
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| 
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| #include "libavutil/avassert.h"
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| 
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| #include "avcodec.h"
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| #include "cbs.h"
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| #include "cbs_mpeg2.h"
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| #include "mpeg12.h"
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| #include "vaapi_encode.h"
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| 
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| typedef struct VAAPIEncodeMPEG2Context {
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|     VAAPIEncodeContext common;
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| 
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|     // User options.
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|     int profile;
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|     int level;
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| 
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|     // Derived settings.
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|     int quant_i;
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|     int quant_p;
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|     int quant_b;
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| 
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|     unsigned int bit_rate;
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|     unsigned int vbv_buffer_size;
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| 
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|     AVRational frame_rate;
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| 
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|     unsigned int f_code_horizontal;
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|     unsigned int f_code_vertical;
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| 
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|     // Stream state.
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|     int64_t last_i_frame;
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| 
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|     // Writer structures.
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|     MPEG2RawSequenceHeader sequence_header;
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|     MPEG2RawExtensionData  sequence_extension;
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|     MPEG2RawExtensionData  sequence_display_extension;
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|     MPEG2RawGroupOfPicturesHeader gop_header;
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|     MPEG2RawPictureHeader  picture_header;
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|     MPEG2RawExtensionData  picture_coding_extension;
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| 
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|     CodedBitstreamContext *cbc;
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|     CodedBitstreamFragment current_fragment;
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| } VAAPIEncodeMPEG2Context;
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| 
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| 
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| static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx,
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|                                              char *data, size_t *data_len,
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|                                              CodedBitstreamFragment *frag)
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| {
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|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
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|     int err;
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| 
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|     err = ff_cbs_write_fragment_data(priv->cbc, frag);
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|     if (err < 0) {
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|         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
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|         return err;
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|     }
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| 
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|     if (*data_len < 8 * frag->data_size - frag->data_bit_padding) {
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|         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
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|                "%zu < %zu.\n", *data_len,
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|                8 * frag->data_size - frag->data_bit_padding);
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|         return AVERROR(ENOSPC);
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|     }
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| 
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|     memcpy(data, frag->data, frag->data_size);
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|     *data_len = 8 * frag->data_size - frag->data_bit_padding;
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| 
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|     return 0;
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| }
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| 
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| static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx,
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|                                          CodedBitstreamFragment *frag,
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|                                          int type, void *header)
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| {
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|     int err;
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| 
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|     err = ff_cbs_insert_unit_content(frag, -1, type, header, NULL);
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|     if (err < 0) {
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|         av_log(avctx, AV_LOG_ERROR, "Failed to add header: "
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|                "type = %d.\n", type);
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|         return err;
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|     }
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| 
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|     return 0;
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| }
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| 
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| static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,
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|                                                     char *data, size_t *data_len)
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| {
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|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
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|     CodedBitstreamFragment  *frag = &priv->current_fragment;
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|     int err;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,
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|                                         &priv->sequence_header);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
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|                                         &priv->sequence_extension);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
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|                                         &priv->sequence_display_extension);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,
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|                                         &priv->gop_header);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
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| fail:
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|     ff_cbs_fragment_reset(frag);
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|     return 0;
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| }
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| 
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| static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,
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|                                                    VAAPIEncodePicture *pic,
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|                                                    char *data, size_t *data_len)
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| {
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|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
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|     CodedBitstreamFragment  *frag = &priv->current_fragment;
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|     int err;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,
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|                                         &priv->picture_header);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,
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|                                         &priv->picture_coding_extension);
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|     if (err < 0)
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|         goto fail;
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| 
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|     err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);
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| fail:
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|     ff_cbs_fragment_reset(frag);
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|     return 0;
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| }
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| 
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| static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)
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| {
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|     VAAPIEncodeContext                 *ctx = avctx->priv_data;
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|     VAAPIEncodeMPEG2Context           *priv = avctx->priv_data;
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|     MPEG2RawSequenceHeader              *sh = &priv->sequence_header;
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|     MPEG2RawSequenceExtension           *se = &priv->sequence_extension.data.sequence;
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|     MPEG2RawSequenceDisplayExtension   *sde = &priv->sequence_display_extension.data.sequence_display;
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|     MPEG2RawGroupOfPicturesHeader     *goph = &priv->gop_header;
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|     MPEG2RawPictureHeader               *ph = &priv->picture_header;
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|     MPEG2RawPictureCodingExtension     *pce = &priv->picture_coding_extension.data.picture_coding;
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|     VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
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|     VAEncPictureParameterBufferMPEG2  *vpic = ctx->codec_picture_params;
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|     int code, ext_n, ext_d;
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| 
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|     memset(sh,   0, sizeof(*sh));
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|     memset(se,   0, sizeof(*se));
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|     memset(sde,  0, sizeof(*sde));
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|     memset(goph, 0, sizeof(*goph));
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|     memset(ph,   0, sizeof(*ph));
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|     memset(pce,  0, sizeof(*pce));
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| 
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| 
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|     if (ctx->va_bit_rate > 0) {
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|         priv->bit_rate = (ctx->va_bit_rate + 399) / 400;
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|     } else {
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|         // Unknown (not a bitrate-targetting mode), so just use the
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|         // highest value.
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|         priv->bit_rate = 0x3fffffff;
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|     }
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|     if (avctx->rc_buffer_size > 0) {
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|         priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;
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|     } else {
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|         // Unknown, so guess a value from the bitrate.
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|         priv->vbv_buffer_size = priv->bit_rate >> 14;
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|     }
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| 
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|     switch (avctx->level) {
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|     case 4: // High.
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|     case 6: // High 1440.
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|         priv->f_code_horizontal = 9;
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|         priv->f_code_vertical   = 5;
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|         break;
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|     case 8: // Main.
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|         priv->f_code_horizontal = 8;
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|         priv->f_code_vertical   = 5;
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|         break;
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|     case 10: // Low.
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|     default:
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|         priv->f_code_horizontal = 7;
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|         priv->f_code_vertical   = 4;
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|         break;
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|     }
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| 
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| 
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|     // Sequence header
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| 
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|     sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;
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| 
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|     sh->horizontal_size_value = avctx->width  & 0xfff;
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|     sh->vertical_size_value   = avctx->height & 0xfff;
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| 
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|     if (avctx->sample_aspect_ratio.num != 0 &&
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|         avctx->sample_aspect_ratio.den != 0) {
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|         AVRational dar = av_div_q(avctx->sample_aspect_ratio,
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|                                   (AVRational) { avctx->width, avctx->height });
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| 
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|         if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {
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|             sh->aspect_ratio_information = 1;
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|         } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {
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|             sh->aspect_ratio_information = 2;
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|         } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {
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|             sh->aspect_ratio_information = 3;
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|         } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {
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|             sh->aspect_ratio_information = 4;
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|         } else {
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|             av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "
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|                    "representable, signalling square pixels instead.\n",
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|                    avctx->sample_aspect_ratio.num,
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|                    avctx->sample_aspect_ratio.den);
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|             sh->aspect_ratio_information = 1;
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|         }
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|     } else {
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|         // Unknown - assume square pixels.
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|         sh->aspect_ratio_information = 1;
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|     }
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| 
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|     if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
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|         priv->frame_rate = avctx->framerate;
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|     else
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|         priv->frame_rate = av_inv_q(avctx->time_base);
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|     ff_mpeg12_find_best_frame_rate(priv->frame_rate,
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|                                    &code, &ext_n, &ext_d, 0);
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|     sh->frame_rate_code = code;
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| 
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|     sh->bit_rate_value        = priv->bit_rate & 0x3ffff;
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|     sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;
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| 
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|     sh->constrained_parameters_flag     = 0;
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|     sh->load_intra_quantiser_matrix     = 0;
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|     sh->load_non_intra_quantiser_matrix = 0;
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| 
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| 
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|     // Sequence extension
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| 
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|     priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;
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|     priv->sequence_extension.extension_start_code_identifier =
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|         MPEG2_EXTENSION_SEQUENCE;
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| 
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|     se->profile_and_level_indication = avctx->profile << 4 | avctx->level;
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|     se->progressive_sequence = 1;
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|     se->chroma_format        = 1;
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| 
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|     se->horizontal_size_extension = avctx->width  >> 12;
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|     se->vertical_size_extension   = avctx->height >> 12;
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| 
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|     se->bit_rate_extension        = priv->bit_rate >> 18;
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|     se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;
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|     se->low_delay                 = ctx->b_per_p == 0;
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| 
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|     se->frame_rate_extension_n = ext_n;
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|     se->frame_rate_extension_d = ext_d;
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| 
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| 
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|     // Sequence display extension
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| 
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|     priv->sequence_display_extension.extension_start_code =
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|         MPEG2_START_EXTENSION;
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|     priv->sequence_display_extension.extension_start_code_identifier =
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|         MPEG2_EXTENSION_SEQUENCE_DISPLAY;
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| 
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|     // Unspecified video format, from table 6-6.
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|     sde->video_format = 5;
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| 
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|     sde->colour_primaries         = avctx->color_primaries;
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|     sde->transfer_characteristics = avctx->color_trc;
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|     sde->matrix_coefficients      = avctx->colorspace;
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|     sde->colour_description       =
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|         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
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|         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
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|         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED;
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| 
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|     sde->display_horizontal_size = avctx->width;
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|     sde->display_vertical_size   = avctx->height;
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| 
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| 
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|     // GOP header
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| 
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|     goph->group_start_code = MPEG2_START_GROUP;
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| 
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|     // Marker bit in the middle of time_code.
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|     goph->time_code   = 1 << 12;
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|     goph->closed_gop  = 1;
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|     goph->broken_link = 0;
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| 
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| 
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|     // Defaults for picture header
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| 
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|     ph->picture_start_code = MPEG2_START_PICTURE;
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| 
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|     ph->vbv_delay = 0xffff; // Not currently calculated.
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| 
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|     ph->full_pel_forward_vector  = 0;
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|     ph->forward_f_code           = 7;
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|     ph->full_pel_backward_vector = 0;
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|     ph->forward_f_code           = 7;
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| 
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| 
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|     // Defaults for picture coding extension
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| 
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|     priv->picture_coding_extension.extension_start_code =
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|         MPEG2_START_EXTENSION;
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|     priv->picture_coding_extension.extension_start_code_identifier =
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|         MPEG2_EXTENSION_PICTURE_CODING;
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| 
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|     pce->intra_dc_precision         = 0;
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|     pce->picture_structure          = 3;
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|     pce->top_field_first            = 0;
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|     pce->frame_pred_frame_dct       = 1;
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|     pce->concealment_motion_vectors = 0;
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|     pce->q_scale_type               = 0;
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|     pce->intra_vlc_format           = 0;
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|     pce->alternate_scan             = 0;
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|     pce->repeat_first_field         = 0;
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|     pce->progressive_frame          = 1;
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|     pce->composite_display_flag     = 0;
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| 
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| 
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| 
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|     *vseq = (VAEncSequenceParameterBufferMPEG2) {
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|         .intra_period = ctx->gop_size,
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|         .ip_period    = ctx->b_per_p + 1,
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| 
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|         .picture_width  = avctx->width,
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|         .picture_height = avctx->height,
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| 
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|         .bits_per_second          = ctx->va_bit_rate,
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|         .frame_rate               = av_q2d(priv->frame_rate),
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|         .aspect_ratio_information = sh->aspect_ratio_information,
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|         .vbv_buffer_size          = priv->vbv_buffer_size,
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| 
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|         .sequence_extension.bits = {
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|             .profile_and_level_indication = se->profile_and_level_indication,
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|             .progressive_sequence         = se->progressive_sequence,
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|             .chroma_format                = se->chroma_format,
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|             .low_delay                    = se->low_delay,
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|             .frame_rate_extension_n       = se->frame_rate_extension_n,
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|             .frame_rate_extension_d       = se->frame_rate_extension_d,
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|         },
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| 
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|         .new_gop_header = 1,
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|         .gop_header.bits = {
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|             .time_code   = goph->time_code,
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|             .closed_gop  = goph->closed_gop,
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|             .broken_link = goph->broken_link,
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|         },
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|     };
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| 
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|     *vpic = (VAEncPictureParameterBufferMPEG2) {
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|         .forward_reference_picture  = VA_INVALID_ID,
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|         .backward_reference_picture = VA_INVALID_ID,
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|         .reconstructed_picture      = VA_INVALID_ID,
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|         .coded_buf                  = VA_INVALID_ID,
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| 
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|         .vbv_delay = 0xffff,
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|         .f_code    = { { 15, 15 }, { 15, 15 } },
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| 
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|         .picture_coding_extension.bits = {
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|             .intra_dc_precision         = pce->intra_dc_precision,
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|             .picture_structure          = pce->picture_structure,
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|             .top_field_first            = pce->top_field_first,
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|             .frame_pred_frame_dct       = pce->frame_pred_frame_dct,
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|             .concealment_motion_vectors = pce->concealment_motion_vectors,
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|             .q_scale_type               = pce->q_scale_type,
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|             .intra_vlc_format           = pce->intra_vlc_format,
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|             .alternate_scan             = pce->alternate_scan,
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|             .repeat_first_field         = pce->repeat_first_field,
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|             .progressive_frame          = pce->progressive_frame,
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|             .composite_display_flag     = pce->composite_display_flag,
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|         },
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| 
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|         .composite_display.bits = {
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|             .v_axis            = pce->v_axis,
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|             .field_sequence    = pce->field_sequence,
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|             .sub_carrier       = pce->sub_carrier,
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|             .burst_amplitude   = pce->burst_amplitude,
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|             .sub_carrier_phase = pce->sub_carrier_phase,
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|         },
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|     };
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| 
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|     return 0;
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| }
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| 
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| static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,
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|                                                  VAAPIEncodePicture *pic)
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| {
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|     VAAPIEncodeMPEG2Context          *priv = avctx->priv_data;
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|     MPEG2RawPictureHeader              *ph = &priv->picture_header;
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|     MPEG2RawPictureCodingExtension    *pce = &priv->picture_coding_extension.data.picture_coding;
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|     VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
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| 
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|     if (pic->type == PICTURE_TYPE_IDR || pic->type == PICTURE_TYPE_I) {
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|         ph->temporal_reference  = 0;
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|         ph->picture_coding_type = 1;
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|         priv->last_i_frame = pic->display_order;
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|     } else {
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|         ph->temporal_reference = pic->display_order - priv->last_i_frame;
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|         ph->picture_coding_type = pic->type == PICTURE_TYPE_B ? 3 : 2;
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|     }
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| 
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|     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {
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|         pce->f_code[0][0] = priv->f_code_horizontal;
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|         pce->f_code[0][1] = priv->f_code_vertical;
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|     } else {
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|         pce->f_code[0][0] = 15;
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|         pce->f_code[0][1] = 15;
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|     }
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|     if (pic->type == PICTURE_TYPE_B) {
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|         pce->f_code[1][0] = priv->f_code_horizontal;
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|         pce->f_code[1][1] = priv->f_code_vertical;
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|     } else {
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|         pce->f_code[1][0] = 15;
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|         pce->f_code[1][1] = 15;
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|     }
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| 
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|     vpic->reconstructed_picture = pic->recon_surface;
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|     vpic->coded_buf             = pic->output_buffer;
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| 
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|     switch (pic->type) {
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|     case PICTURE_TYPE_IDR:
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|     case PICTURE_TYPE_I:
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|         vpic->picture_type = VAEncPictureTypeIntra;
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|         break;
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|     case PICTURE_TYPE_P:
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|         vpic->picture_type = VAEncPictureTypePredictive;
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|         vpic->forward_reference_picture = pic->refs[0]->recon_surface;
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|         break;
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|     case PICTURE_TYPE_B:
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|         vpic->picture_type = VAEncPictureTypeBidirectional;
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|         vpic->forward_reference_picture  = pic->refs[0]->recon_surface;
 | |
|         vpic->backward_reference_picture = pic->refs[1]->recon_surface;
 | |
|         break;
 | |
|     default:
 | |
|         av_assert0(0 && "invalid picture type");
 | |
|     }
 | |
| 
 | |
|     vpic->temporal_reference = ph->temporal_reference;
 | |
|     vpic->f_code[0][0]       = pce->f_code[0][0];
 | |
|     vpic->f_code[0][1]       = pce->f_code[0][1];
 | |
|     vpic->f_code[1][0]       = pce->f_code[1][0];
 | |
|     vpic->f_code[1][1]       = pce->f_code[1][1];
 | |
| 
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,
 | |
|                                                VAAPIEncodePicture *pic,
 | |
|                                                VAAPIEncodeSlice *slice)
 | |
| {
 | |
|     VAAPIEncodeMPEG2Context            *priv = avctx->priv_data;
 | |
|     VAEncSliceParameterBufferMPEG2   *vslice = slice->codec_slice_params;
 | |
|     int qp;
 | |
| 
 | |
|     vslice->macroblock_address = slice->block_start;
 | |
|     vslice->num_macroblocks    = slice->block_size;
 | |
| 
 | |
|     switch (pic->type) {
 | |
|     case PICTURE_TYPE_IDR:
 | |
|     case PICTURE_TYPE_I:
 | |
|         qp = priv->quant_i;
 | |
|         break;
 | |
|     case PICTURE_TYPE_P:
 | |
|         qp = priv->quant_p;
 | |
|         break;
 | |
|     case PICTURE_TYPE_B:
 | |
|         qp = priv->quant_b;
 | |
|         break;
 | |
|     default:
 | |
|         av_assert0(0 && "invalid picture type");
 | |
|     }
 | |
| 
 | |
|     vslice->quantiser_scale_code = qp;
 | |
|     vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
 | |
|                               pic->type == PICTURE_TYPE_I);
 | |
| 
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
 | |
| {
 | |
|     VAAPIEncodeContext       *ctx = avctx->priv_data;
 | |
|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 | |
|     int err;
 | |
| 
 | |
|     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);
 | |
|     if (err < 0)
 | |
|         return err;
 | |
| 
 | |
|     if (ctx->va_rc_mode == VA_RC_CQP) {
 | |
|         priv->quant_p = av_clip(ctx->rc_quality, 1, 31);
 | |
|         if (avctx->i_quant_factor > 0.0)
 | |
|             priv->quant_i =
 | |
|                 av_clip((avctx->i_quant_factor * priv->quant_p +
 | |
|                          avctx->i_quant_offset) + 0.5, 1, 31);
 | |
|         else
 | |
|             priv->quant_i = priv->quant_p;
 | |
|         if (avctx->b_quant_factor > 0.0)
 | |
|             priv->quant_b =
 | |
|                 av_clip((avctx->b_quant_factor * priv->quant_p +
 | |
|                          avctx->b_quant_offset) + 0.5, 1, 31);
 | |
|         else
 | |
|             priv->quant_b = priv->quant_p;
 | |
| 
 | |
|         av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
 | |
|                "%d / %d / %d for I- / P- / B-frames.\n",
 | |
|                priv->quant_i, priv->quant_p, priv->quant_b);
 | |
| 
 | |
|     } else {
 | |
|         priv->quant_i = 16;
 | |
|         priv->quant_p = 16;
 | |
|         priv->quant_b = 16;
 | |
|     }
 | |
| 
 | |
|     ctx->slice_block_rows = FFALIGN(avctx->height, 16) / 16;
 | |
|     ctx->slice_block_cols = FFALIGN(avctx->width,  16) / 16;
 | |
| 
 | |
|     ctx->nb_slices  = ctx->slice_block_rows;
 | |
|     ctx->slice_size = 1;
 | |
| 
 | |
|     ctx->roi_quant_range = 31;
 | |
| 
 | |
|     return 0;
 | |
| }
 | |
| 
 | |
| static const VAAPIEncodeProfile vaapi_encode_mpeg2_profiles[] = {
 | |
|     { FF_PROFILE_MPEG2_MAIN,   8, 3, 1, 1, VAProfileMPEG2Main   },
 | |
|     { FF_PROFILE_MPEG2_SIMPLE, 8, 3, 1, 1, VAProfileMPEG2Simple },
 | |
|     { FF_PROFILE_UNKNOWN }
 | |
| };
 | |
| 
 | |
| static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {
 | |
|     .profiles              = vaapi_encode_mpeg2_profiles,
 | |
| 
 | |
|     .flags                 = FLAG_B_PICTURES,
 | |
| 
 | |
|     .configure             = &vaapi_encode_mpeg2_configure,
 | |
| 
 | |
|     .default_quality       = 10,
 | |
| 
 | |
|     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferMPEG2),
 | |
|     .init_sequence_params  = &vaapi_encode_mpeg2_init_sequence_params,
 | |
| 
 | |
|     .picture_params_size   = sizeof(VAEncPictureParameterBufferMPEG2),
 | |
|     .init_picture_params   = &vaapi_encode_mpeg2_init_picture_params,
 | |
| 
 | |
|     .slice_params_size     = sizeof(VAEncSliceParameterBufferMPEG2),
 | |
|     .init_slice_params     = &vaapi_encode_mpeg2_init_slice_params,
 | |
| 
 | |
|     .sequence_header_type  = VAEncPackedHeaderSequence,
 | |
|     .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header,
 | |
| 
 | |
|     .picture_header_type   = VAEncPackedHeaderPicture,
 | |
|     .write_picture_header  = &vaapi_encode_mpeg2_write_picture_header,
 | |
| };
 | |
| 
 | |
| static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)
 | |
| {
 | |
|     VAAPIEncodeContext       *ctx = avctx->priv_data;
 | |
|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 | |
| 
 | |
|     ctx->codec = &vaapi_encode_type_mpeg2;
 | |
| 
 | |
|     if (avctx->profile == FF_PROFILE_UNKNOWN)
 | |
|         avctx->profile = priv->profile;
 | |
|     if (avctx->level == FF_LEVEL_UNKNOWN)
 | |
|         avctx->level = priv->level;
 | |
| 
 | |
|     // Reject unknown levels (these are required to set f_code for
 | |
|     // motion vector encoding).
 | |
|     switch (avctx->level) {
 | |
|     case 4: // High
 | |
|     case 6: // High 1440
 | |
|     case 8: // Main
 | |
|     case 10: // Low
 | |
|         break;
 | |
|     default:
 | |
|         av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 level %d.\n",
 | |
|                avctx->level);
 | |
|         return AVERROR(EINVAL);
 | |
|     }
 | |
| 
 | |
|     if (avctx->height % 4096 == 0 || avctx->width % 4096 == 0) {
 | |
|         av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support picture "
 | |
|                "height or width divisible by 4096.\n");
 | |
|         return AVERROR(EINVAL);
 | |
|     }
 | |
| 
 | |
|     ctx->desired_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE |
 | |
|                                   VA_ENC_PACKED_HEADER_PICTURE;
 | |
| 
 | |
|     ctx->surface_width  = FFALIGN(avctx->width,  16);
 | |
|     ctx->surface_height = FFALIGN(avctx->height, 16);
 | |
| 
 | |
|     return ff_vaapi_encode_init(avctx);
 | |
| }
 | |
| 
 | |
| static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)
 | |
| {
 | |
|     VAAPIEncodeMPEG2Context *priv = avctx->priv_data;
 | |
| 
 | |
|     ff_cbs_fragment_free(&priv->current_fragment);
 | |
|     ff_cbs_close(&priv->cbc);
 | |
| 
 | |
|     return ff_vaapi_encode_close(avctx);
 | |
| }
 | |
| 
 | |
| #define OFFSET(x) offsetof(VAAPIEncodeMPEG2Context, x)
 | |
| #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 | |
| static const AVOption vaapi_encode_mpeg2_options[] = {
 | |
|     VAAPI_ENCODE_COMMON_OPTIONS,
 | |
|     VAAPI_ENCODE_RC_OPTIONS,
 | |
| 
 | |
|     { "profile", "Set profile (in profile_and_level_indication)",
 | |
|       OFFSET(profile), AV_OPT_TYPE_INT,
 | |
|       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 7, FLAGS, "profile" },
 | |
| 
 | |
| #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
 | |
|       { .i64 = value }, 0, 0, FLAGS, "profile"
 | |
|     { PROFILE("simple", FF_PROFILE_MPEG2_SIMPLE) },
 | |
|     { PROFILE("main",   FF_PROFILE_MPEG2_MAIN)   },
 | |
| #undef PROFILE
 | |
| 
 | |
|     { "level", "Set level (in profile_and_level_indication)",
 | |
|       OFFSET(level), AV_OPT_TYPE_INT,
 | |
|       { .i64 = 4 }, 0, 15, FLAGS, "level" },
 | |
| 
 | |
| #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
 | |
|       { .i64 = value }, 0, 0, FLAGS, "level"
 | |
|     { LEVEL("low",       10) },
 | |
|     { LEVEL("main",       8) },
 | |
|     { LEVEL("high_1440",  6) },
 | |
|     { LEVEL("high",       4) },
 | |
| #undef LEVEL
 | |
| 
 | |
|     { NULL },
 | |
| };
 | |
| 
 | |
| static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {
 | |
|     { "b",              "0"   },
 | |
|     { "bf",             "1"   },
 | |
|     { "g",              "120" },
 | |
|     { "i_qfactor",      "1"   },
 | |
|     { "i_qoffset",      "0"   },
 | |
|     { "b_qfactor",      "6/5" },
 | |
|     { "b_qoffset",      "0"   },
 | |
|     { "qmin",           "-1"  },
 | |
|     { "qmax",           "-1"  },
 | |
|     { NULL },
 | |
| };
 | |
| 
 | |
| static const AVClass vaapi_encode_mpeg2_class = {
 | |
|     .class_name = "mpeg2_vaapi",
 | |
|     .item_name  = av_default_item_name,
 | |
|     .option     = vaapi_encode_mpeg2_options,
 | |
|     .version    = LIBAVUTIL_VERSION_INT,
 | |
| };
 | |
| 
 | |
| AVCodec ff_mpeg2_vaapi_encoder = {
 | |
|     .name           = "mpeg2_vaapi",
 | |
|     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"),
 | |
|     .type           = AVMEDIA_TYPE_VIDEO,
 | |
|     .id             = AV_CODEC_ID_MPEG2VIDEO,
 | |
|     .priv_data_size = sizeof(VAAPIEncodeMPEG2Context),
 | |
|     .init           = &vaapi_encode_mpeg2_init,
 | |
|     .receive_packet = &ff_vaapi_encode_receive_packet,
 | |
|     .close          = &vaapi_encode_mpeg2_close,
 | |
|     .priv_class     = &vaapi_encode_mpeg2_class,
 | |
|     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
 | |
|                       AV_CODEC_CAP_DR1,
 | |
|     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
 | |
|     .defaults       = vaapi_encode_mpeg2_defaults,
 | |
|     .pix_fmts = (const enum AVPixelFormat[]) {
 | |
|         AV_PIX_FMT_VAAPI,
 | |
|         AV_PIX_FMT_NONE,
 | |
|     },
 | |
|     .hw_configs     = ff_vaapi_encode_hw_configs,
 | |
|     .wrapper_name   = "vaapi",
 | |
| };
 |