mirror of https://git.ffmpeg.org/ffmpeg.git
471 lines
16 KiB
C
471 lines
16 KiB
C
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/*
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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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#include <va/va.h>
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#include <va/va_enc_mpeg2.h>
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/internal.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixfmt.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "mpegvideo.h"
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#include "put_bits.h"
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#include "vaapi_encode.h"
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typedef struct VAAPIEncodeMPEG2Context {
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int mb_width;
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int mb_height;
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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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int64_t last_i_frame;
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unsigned int bit_rate;
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unsigned int vbv_buffer_size;
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} VAAPIEncodeMPEG2Context;
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#define vseq_var(name) vseq->name, name
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#define vseqext_field(name) vseq->sequence_extension.bits.name, name
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#define vgop_field(name) vseq->gop_header.bits.name, name
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#define vpic_var(name) vpic->name, name
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#define vpcext_field(name) vpic->picture_coding_extension.bits.name, name
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#define vcomp_field(name) vpic->composite_display.bits.name, name
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#define u2(width, value, name) put_bits(&pbc, width, value)
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#define u(width, ...) u2(width, __VA_ARGS__)
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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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VAAPIEncodeContext *ctx = avctx->priv_data;
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VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
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VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
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PutBitContext pbc;
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init_put_bits(&pbc, data, 8 * *data_len);
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u(32, SEQ_START_CODE, sequence_header_code);
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u(12, vseq->picture_width, horizontal_size_value);
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u(12, vseq->picture_height, vertical_size_value);
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u(4, vseq_var(aspect_ratio_information));
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u(4, 8, frame_rate_code);
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u(18, priv->bit_rate & 0x3fff, bit_rate_value);
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u(1, 1, marker_bit);
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u(10, priv->vbv_buffer_size & 0x3ff, vbv_buffer_size_value);
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u(1, 0, constrained_parameters_flag);
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u(1, 0, load_intra_quantiser_matrix);
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// intra_quantiser_matrix[64]
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u(1, 0, load_non_intra_quantiser_matrix);
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// non_intra_quantiser_matrix[64]
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while (put_bits_count(&pbc) % 8)
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u(1, 0, zero_bit);
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u(32, EXT_START_CODE, extension_start_code);
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u(4, 1, extension_start_code_identifier);
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u(8, vseqext_field(profile_and_level_indication));
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u(1, vseqext_field(progressive_sequence));
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u(2, vseqext_field(chroma_format));
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u(2, 0, horizontal_size_extension);
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u(2, 0, vertical_size_extension);
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u(12, priv->bit_rate >> 18, bit_rate_extension);
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u(1, 1, marker_bit);
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u(8, priv->vbv_buffer_size >> 10, vbv_buffer_size_extension);
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u(1, vseqext_field(low_delay));
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u(2, vseqext_field(frame_rate_extension_n));
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u(2, vseqext_field(frame_rate_extension_d));
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while (put_bits_count(&pbc) % 8)
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u(1, 0, zero_bit);
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u(32, GOP_START_CODE, group_start_code);
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u(25, vgop_field(time_code));
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u(1, vgop_field(closed_gop));
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u(1, vgop_field(broken_link));
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while (put_bits_count(&pbc) % 8)
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u(1, 0, zero_bit);
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*data_len = put_bits_count(&pbc);
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flush_put_bits(&pbc);
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return 0;
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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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VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
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int picture_coding_type;
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PutBitContext pbc;
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init_put_bits(&pbc, data, 8 * *data_len);
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u(32, PICTURE_START_CODE, picture_start_code);
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u(10, vpic_var(temporal_reference));
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switch (vpic->picture_type) {
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case VAEncPictureTypeIntra:
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picture_coding_type = AV_PICTURE_TYPE_I;
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break;
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case VAEncPictureTypePredictive:
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picture_coding_type = AV_PICTURE_TYPE_P;
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break;
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case VAEncPictureTypeBidirectional:
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picture_coding_type = AV_PICTURE_TYPE_B;
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break;
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default:
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av_assert0(0 && "invalid picture_coding_type");
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}
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u(3, picture_coding_type, picture_coding_type);
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u(16, 0xffff, vbv_delay);
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if (picture_coding_type == 2 || picture_coding_type == 3) {
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u(1, 0, full_pel_forward_vector);
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u(3, 7, forward_f_code);
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}
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if (picture_coding_type == 3) {
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u(1, 0, full_pel_backward_vector);
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u(3, 7, backward_f_code);
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}
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u(1, 0, extra_bit_picture);
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while (put_bits_count(&pbc) % 8)
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u(1, 0, zero_bit);
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u(32, EXT_START_CODE, extension_start_code);
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u(4, 8, extension_start_code_identifier);
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u(4, vpic_var(f_code[0][0]));
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u(4, vpic_var(f_code[0][1]));
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u(4, vpic_var(f_code[1][0]));
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u(4, vpic_var(f_code[1][1]));
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u(2, vpcext_field(intra_dc_precision));
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u(2, vpcext_field(picture_structure));
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u(1, vpcext_field(top_field_first));
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u(1, vpcext_field(frame_pred_frame_dct));
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u(1, vpcext_field(concealment_motion_vectors));
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u(1, vpcext_field(q_scale_type));
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u(1, vpcext_field(intra_vlc_format));
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u(1, vpcext_field(alternate_scan));
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u(1, vpcext_field(repeat_first_field));
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u(1, 1, chroma_420_type);
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u(1, vpcext_field(progressive_frame));
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u(1, vpcext_field(composite_display_flag));
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if (vpic->picture_coding_extension.bits.composite_display_flag) {
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u(1, vcomp_field(v_axis));
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u(3, vcomp_field(field_sequence));
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u(1, vcomp_field(sub_carrier));
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u(7, vcomp_field(burst_amplitude));
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u(8, vcomp_field(sub_carrier_phase));
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}
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while (put_bits_count(&pbc) % 8)
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u(1, 0, zero_bit);
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*data_len = put_bits_count(&pbc);
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flush_put_bits(&pbc);
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return 0;
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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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VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;
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VAEncPictureParameterBufferMPEG2 *vpic = ctx->codec_picture_params;
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VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
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vseq->intra_period = avctx->gop_size;
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vseq->ip_period = ctx->b_per_p + 1;
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vseq->picture_width = avctx->width;
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vseq->picture_height = avctx->height;
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vseq->bits_per_second = avctx->bit_rate;
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if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
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vseq->frame_rate = (float)avctx->framerate.num / avctx->framerate.den;
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else
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vseq->frame_rate = (float)avctx->time_base.num / avctx->time_base.den;
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vseq->aspect_ratio_information = 1;
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vseq->vbv_buffer_size = avctx->rc_buffer_size / (16 * 1024);
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vseq->sequence_extension.bits.profile_and_level_indication =
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avctx->profile << 4 | avctx->level;
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vseq->sequence_extension.bits.progressive_sequence = 1;
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vseq->sequence_extension.bits.chroma_format = 1;
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vseq->sequence_extension.bits.low_delay = 0;
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vseq->sequence_extension.bits.frame_rate_extension_n = 0;
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vseq->sequence_extension.bits.frame_rate_extension_d = 0;
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vseq->new_gop_header = 0;
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vseq->gop_header.bits.time_code = 0;
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vseq->gop_header.bits.closed_gop = 1;
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vseq->gop_header.bits.broken_link = 0;
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vpic->forward_reference_picture = VA_INVALID_ID;
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vpic->backward_reference_picture = VA_INVALID_ID;
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vpic->reconstructed_picture = VA_INVALID_ID;
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vpic->coded_buf = VA_INVALID_ID;
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vpic->temporal_reference = 0;
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vpic->f_code[0][0] = 15;
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vpic->f_code[0][1] = 15;
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vpic->f_code[1][0] = 15;
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vpic->f_code[1][1] = 15;
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vpic->picture_coding_extension.bits.intra_dc_precision = 0;
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vpic->picture_coding_extension.bits.picture_structure = 3;
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vpic->picture_coding_extension.bits.top_field_first = 0;
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vpic->picture_coding_extension.bits.frame_pred_frame_dct = 1;
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vpic->picture_coding_extension.bits.concealment_motion_vectors = 0;
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vpic->picture_coding_extension.bits.q_scale_type = 0;
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vpic->picture_coding_extension.bits.intra_vlc_format = 0;
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vpic->picture_coding_extension.bits.alternate_scan = 0;
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vpic->picture_coding_extension.bits.repeat_first_field = 0;
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vpic->picture_coding_extension.bits.progressive_frame = 1;
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vpic->picture_coding_extension.bits.composite_display_flag = 0;
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priv->bit_rate = (avctx->bit_rate + 399) / 400;
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priv->vbv_buffer_size = avctx->rc_buffer_size / (16 * 1024);
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return 0;
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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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VAAPIEncodeContext *ctx = avctx->priv_data;
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VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;
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VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
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int fch, fcv;
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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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fch = 9;
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fcv = 5;
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break;
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case 8: // Main.
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fch = 8;
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fcv = 5;
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break;
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case 10: // Low.
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default:
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fch = 7;
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fcv = 4;
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break;
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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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priv->last_i_frame = pic->display_order;
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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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vpic->f_code[0][0] = fch;
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vpic->f_code[0][1] = fcv;
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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;
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vpic->backward_reference_picture = pic->refs[1]->recon_surface;
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vpic->f_code[0][0] = fch;
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vpic->f_code[0][1] = fcv;
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vpic->f_code[1][0] = fch;
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vpic->f_code[1][1] = fcv;
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break;
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default:
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av_assert0(0 && "invalid picture type");
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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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vpic->temporal_reference = pic->display_order - priv->last_i_frame;
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pic->nb_slices = priv->mb_height;
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return 0;
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}
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static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,
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VAAPIEncodePicture *pic,
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VAAPIEncodeSlice *slice)
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{
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VAAPIEncodeContext *ctx = avctx->priv_data;
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VAEncSliceParameterBufferMPEG2 *vslice = slice->codec_slice_params;
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VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
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int qp;
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vslice->macroblock_address = priv->mb_width * slice->index;
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vslice->num_macroblocks = priv->mb_width;
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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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qp = priv->quant_i;
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break;
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case PICTURE_TYPE_P:
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qp = priv->quant_p;
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break;
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case PICTURE_TYPE_B:
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qp = priv->quant_b;
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break;
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default:
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av_assert0(0 && "invalid picture type");
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}
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vslice->quantiser_scale_code = qp;
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vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||
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pic->type == PICTURE_TYPE_I);
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return 0;
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}
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static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)
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{
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VAAPIEncodeContext *ctx = avctx->priv_data;
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VAAPIEncodeMPEG2Context *priv = ctx->priv_data;
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priv->mb_width = FFALIGN(avctx->width, 16) / 16;
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priv->mb_height = FFALIGN(avctx->height, 16) / 16;
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if (ctx->va_rc_mode == VA_RC_CQP) {
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priv->quant_p = av_clip(avctx->global_quality, 1, 31);
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if (avctx->i_quant_factor > 0.0)
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priv->quant_i = av_clip((avctx->global_quality *
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avctx->i_quant_factor +
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avctx->i_quant_offset) + 0.5,
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1, 31);
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else
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priv->quant_i = priv->quant_p;
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if (avctx->b_quant_factor > 0.0)
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priv->quant_b = av_clip((avctx->global_quality *
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avctx->b_quant_factor +
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avctx->b_quant_offset) + 0.5,
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1, 31);
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else
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priv->quant_b = priv->quant_p;
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av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "
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"%d / %d / %d for I- / P- / B-frames.\n",
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priv->quant_i, priv->quant_p, priv->quant_b);
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} else {
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av_assert0(0 && "Invalid RC mode.");
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}
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return 0;
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}
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||
|
|
||
|
static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {
|
||
|
.priv_data_size = sizeof(VAAPIEncodeMPEG2Context),
|
||
|
|
||
|
.configure = &vaapi_encode_mpeg2_configure,
|
||
|
|
||
|
.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;
|
||
|
|
||
|
ctx->codec = &vaapi_encode_type_mpeg2;
|
||
|
|
||
|
switch (avctx->profile) {
|
||
|
case FF_PROFILE_MPEG2_SIMPLE:
|
||
|
ctx->va_profile = VAProfileMPEG2Simple;
|
||
|
break;
|
||
|
case FF_PROFILE_MPEG2_MAIN:
|
||
|
ctx->va_profile = VAProfileMPEG2Main;
|
||
|
break;
|
||
|
default:
|
||
|
av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 profile %d.\n",
|
||
|
avctx->profile);
|
||
|
return AVERROR(EINVAL);
|
||
|
}
|
||
|
|
||
|
ctx->va_entrypoint = VAEntrypointEncSlice;
|
||
|
ctx->va_rt_format = VA_RT_FORMAT_YUV420;
|
||
|
ctx->va_rc_mode = VA_RC_CQP;
|
||
|
|
||
|
ctx->va_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 const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {
|
||
|
{ "profile", "4" },
|
||
|
{ "level", "4" },
|
||
|
{ "bf", "1" },
|
||
|
{ "g", "120" },
|
||
|
{ "i_qfactor", "1" },
|
||
|
{ "i_qoffset", "0" },
|
||
|
{ "b_qfactor", "6/5" },
|
||
|
{ "b_qoffset", "0" },
|
||
|
{ "global_quality", "10" },
|
||
|
{ NULL },
|
||
|
};
|
||
|
|
||
|
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(VAAPIEncodeContext),
|
||
|
.init = &vaapi_encode_mpeg2_init,
|
||
|
.encode2 = &ff_vaapi_encode2,
|
||
|
.close = &ff_vaapi_encode_close,
|
||
|
.capabilities = AV_CODEC_CAP_DELAY,
|
||
|
.defaults = vaapi_encode_mpeg2_defaults,
|
||
|
.pix_fmts = (const enum AVPixelFormat[]) {
|
||
|
AV_PIX_FMT_VAAPI,
|
||
|
AV_PIX_FMT_NONE,
|
||
|
},
|
||
|
};
|