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This is possible, because every given FFCodec has to implement exactly one of these. Doing so decreases sizeof(FFCodec) and therefore decreases the size of the binary. Notice that in case of position-independent code the decrease is in .data.rel.ro, so that this translates to decreased memory consumption. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
441 lines
16 KiB
C
441 lines
16 KiB
C
/*
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* AVS encoding using the xavs library
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* Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com>
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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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <stdint.h>
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#include <float.h>
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#include <xavs.h>
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#include "avcodec.h"
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#include "codec_internal.h"
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#include "encode.h"
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#include "packet_internal.h"
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#include "libavutil/internal.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#define END_OF_STREAM 0x001
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#define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */
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#define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */
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#define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/
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typedef struct XavsContext {
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AVClass *class;
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xavs_param_t params;
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xavs_t *enc;
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xavs_picture_t pic;
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uint8_t *sei;
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int sei_size;
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int end_of_stream;
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float crf;
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int cqp;
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int b_bias;
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float cplxblur;
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int direct_pred;
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int aud;
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int fast_pskip;
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int motion_est;
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int mbtree;
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int mixed_refs;
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int b_frame_strategy;
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int chroma_offset;
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int scenechange_threshold;
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int noise_reduction;
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int64_t *pts_buffer;
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int out_frame_count;
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} XavsContext;
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static void XAVS_log(void *p, int level, const char *fmt, va_list args)
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{
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static const int level_map[] = {
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[XAVS_LOG_ERROR] = AV_LOG_ERROR,
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[XAVS_LOG_WARNING] = AV_LOG_WARNING,
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[XAVS_LOG_INFO] = AV_LOG_INFO,
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[XAVS_LOG_DEBUG] = AV_LOG_DEBUG
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};
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if (level < 0 || level > XAVS_LOG_DEBUG)
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return;
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av_vlog(p, level_map[level], fmt, args);
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}
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static int encode_nals(AVCodecContext *ctx, AVPacket *pkt,
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xavs_nal_t *nals, int nnal)
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{
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XavsContext *x4 = ctx->priv_data;
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int64_t size = x4->sei_size;
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uint8_t *p, *p_end;
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int i, s, ret;
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if (!nnal)
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return 0;
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for (i = 0; i < nnal; i++)
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size += 3U + nals[i].i_payload;
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if ((ret = ff_get_encode_buffer(ctx, pkt, size, 0)) < 0)
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return ret;
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p = pkt->data;
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p_end = pkt->data + size;
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/* Write the SEI as part of the first frame. */
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if (x4->sei_size > 0 && nnal > 0) {
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memcpy(p, x4->sei, x4->sei_size);
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p += x4->sei_size;
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x4->sei_size = 0;
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}
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for (i = 0; i < nnal; i++) {
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int size = p_end - p;
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s = xavs_nal_encode(p, &size, 1, nals + i);
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if (s < 0)
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return AVERROR_EXTERNAL;
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if (s != 3U + nals[i].i_payload)
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return AVERROR_EXTERNAL;
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p += s;
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}
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return 1;
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}
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static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet)
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{
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XavsContext *x4 = avctx->priv_data;
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xavs_nal_t *nal;
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int nnal, i, ret;
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xavs_picture_t pic_out;
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int pict_type;
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x4->pic.img.i_csp = XAVS_CSP_I420;
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x4->pic.img.i_plane = 3;
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if (frame) {
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for (i = 0; i < 3; i++) {
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x4->pic.img.plane[i] = frame->data[i];
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x4->pic.img.i_stride[i] = frame->linesize[i];
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}
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x4->pic.i_pts = frame->pts;
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x4->pic.i_type = XAVS_TYPE_AUTO;
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x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts;
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}
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if (xavs_encoder_encode(x4->enc, &nal, &nnal,
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frame? &x4->pic: NULL, &pic_out) < 0)
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return AVERROR_EXTERNAL;
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ret = encode_nals(avctx, pkt, nal, nnal);
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if (ret < 0)
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return ret;
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if (!ret) {
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if (!frame && !(x4->end_of_stream)) {
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if ((ret = ff_get_encode_buffer(avctx, pkt, 4, 0)) < 0)
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return ret;
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pkt->data[0] = 0x0;
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pkt->data[1] = 0x0;
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pkt->data[2] = 0x01;
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pkt->data[3] = 0xb1;
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pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] -
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x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)];
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x4->end_of_stream = END_OF_STREAM;
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*got_packet = 1;
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}
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return 0;
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}
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pkt->pts = pic_out.i_pts;
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if (avctx->has_b_frames) {
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if (!x4->out_frame_count)
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pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]);
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else
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pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)];
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} else
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pkt->dts = pkt->pts;
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switch (pic_out.i_type) {
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case XAVS_TYPE_IDR:
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case XAVS_TYPE_I:
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pict_type = AV_PICTURE_TYPE_I;
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break;
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case XAVS_TYPE_P:
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pict_type = AV_PICTURE_TYPE_P;
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break;
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case XAVS_TYPE_B:
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case XAVS_TYPE_BREF:
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pict_type = AV_PICTURE_TYPE_B;
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break;
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default:
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pict_type = AV_PICTURE_TYPE_NONE;
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}
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/* There is no IDR frame in AVS JiZhun */
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/* Sequence header is used as a flag */
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if (pic_out.i_type == XAVS_TYPE_I) {
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pkt->flags |= AV_PKT_FLAG_KEY;
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}
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ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type);
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x4->out_frame_count++;
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*got_packet = ret;
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return 0;
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}
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static av_cold int XAVS_close(AVCodecContext *avctx)
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{
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XavsContext *x4 = avctx->priv_data;
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av_freep(&x4->sei);
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av_freep(&x4->pts_buffer);
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if (x4->enc)
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xavs_encoder_close(x4->enc);
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return 0;
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}
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static av_cold int XAVS_init(AVCodecContext *avctx)
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{
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XavsContext *x4 = avctx->priv_data;
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x4->sei_size = 0;
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xavs_param_default(&x4->params);
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x4->params.pf_log = XAVS_log;
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x4->params.p_log_private = avctx;
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x4->params.i_keyint_max = avctx->gop_size;
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if (avctx->bit_rate) {
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x4->params.rc.i_bitrate = avctx->bit_rate / 1000;
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x4->params.rc.i_rc_method = XAVS_RC_ABR;
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}
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x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000;
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x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000;
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x4->params.rc.b_stat_write = avctx->flags & AV_CODEC_FLAG_PASS1;
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if (avctx->flags & AV_CODEC_FLAG_PASS2) {
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x4->params.rc.b_stat_read = 1;
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} else {
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if (x4->crf >= 0) {
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x4->params.rc.i_rc_method = XAVS_RC_CRF;
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x4->params.rc.f_rf_constant = x4->crf;
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} else if (x4->cqp >= 0) {
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x4->params.rc.i_rc_method = XAVS_RC_CQP;
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x4->params.rc.i_qp_constant = x4->cqp;
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}
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}
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if (x4->aud >= 0)
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x4->params.b_aud = x4->aud;
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if (x4->mbtree >= 0)
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x4->params.rc.b_mb_tree = x4->mbtree;
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if (x4->direct_pred >= 0)
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x4->params.analyse.i_direct_mv_pred = x4->direct_pred;
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if (x4->fast_pskip >= 0)
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x4->params.analyse.b_fast_pskip = x4->fast_pskip;
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if (x4->motion_est >= 0)
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x4->params.analyse.i_me_method = x4->motion_est;
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if (x4->mixed_refs >= 0)
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x4->params.analyse.b_mixed_references = x4->mixed_refs;
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if (x4->b_bias != INT_MIN)
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x4->params.i_bframe_bias = x4->b_bias;
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if (x4->cplxblur >= 0)
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x4->params.rc.f_complexity_blur = x4->cplxblur;
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x4->params.i_bframe = avctx->max_b_frames;
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/* cabac is not included in AVS JiZhun Profile */
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x4->params.b_cabac = 0;
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x4->params.i_bframe_adaptive = x4->b_frame_strategy;
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avctx->has_b_frames = !!avctx->max_b_frames;
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/* AVS doesn't allow B picture as reference */
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/* The max allowed reference frame number of B is 2 */
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x4->params.i_keyint_min = avctx->keyint_min;
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if (x4->params.i_keyint_min > x4->params.i_keyint_max)
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x4->params.i_keyint_min = x4->params.i_keyint_max;
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x4->params.i_scenecut_threshold = x4->scenechange_threshold;
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// x4->params.b_deblocking_filter = avctx->flags & AV_CODEC_FLAG_LOOP_FILTER;
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x4->params.rc.i_qp_min = avctx->qmin;
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x4->params.rc.i_qp_max = avctx->qmax;
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x4->params.rc.i_qp_step = avctx->max_qdiff;
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x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */
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x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */
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x4->params.i_frame_reference = avctx->refs;
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x4->params.i_width = avctx->width;
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x4->params.i_height = avctx->height;
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x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num;
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x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den;
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/* This is only used for counting the fps */
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x4->params.i_fps_num = avctx->time_base.den;
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x4->params.i_fps_den = avctx->time_base.num;
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x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16;
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x4->params.analyse.i_me_range = avctx->me_range;
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x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality;
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x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA;
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/* AVS P2 only enables 8x8 transform */
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x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & AV_CODEC_FLAG2_8X8DCT;
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x4->params.analyse.i_trellis = avctx->trellis;
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x4->params.analyse.i_noise_reduction = x4->noise_reduction;
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if (avctx->level > 0)
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x4->params.i_level_idc = avctx->level;
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if (avctx->bit_rate > 0)
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x4->params.rc.f_rate_tolerance =
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(float)avctx->bit_rate_tolerance / avctx->bit_rate;
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if ((avctx->rc_buffer_size) &&
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(avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) {
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x4->params.rc.f_vbv_buffer_init =
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(float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size;
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} else
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x4->params.rc.f_vbv_buffer_init = 0.9;
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/* TAG:do we have MB tree RC method */
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/* what is the RC method we are now using? Default NO */
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x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor);
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x4->params.rc.f_pb_factor = avctx->b_quant_factor;
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x4->params.analyse.i_chroma_qp_offset = x4->chroma_offset;
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x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR;
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x4->params.i_log_level = XAVS_LOG_DEBUG;
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x4->params.i_threads = avctx->thread_count;
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x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT;
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if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
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x4->params.b_repeat_headers = 0;
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x4->enc = xavs_encoder_open(&x4->params);
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if (!x4->enc)
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return AVERROR_EXTERNAL;
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if (!FF_ALLOCZ_TYPED_ARRAY(x4->pts_buffer, avctx->max_b_frames + 1))
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return AVERROR(ENOMEM);
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/* TAG: Do we have GLOBAL HEADER in AVS */
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/* We Have PPS and SPS in AVS */
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if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) {
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xavs_nal_t *nal;
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int nnal, s, i, size;
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uint8_t *p;
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s = xavs_encoder_headers(x4->enc, &nal, &nnal);
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avctx->extradata = p = av_malloc(s);
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for (i = 0; i < nnal; i++) {
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/* Don't put the SEI in extradata. */
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if (nal[i].i_type == NAL_SEI) {
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x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 );
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if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0)
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return -1;
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continue;
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}
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size = xavs_nal_encode(p, &s, 1, nal + i);
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if (size < 0)
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return -1;
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p += size;
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}
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avctx->extradata_size = p - avctx->extradata;
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}
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return 0;
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}
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#define OFFSET(x) offsetof(XavsContext, x)
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#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{ "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE },
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{ "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE },
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{ "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE },
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{ "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE},
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{ "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" },
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{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
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{ "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
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{ "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
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{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
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{ "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
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{ "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
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{ "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE },
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{ "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
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{ "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"},
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{ "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" },
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{ "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" },
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{ "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
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|
{ "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA }, INT_MIN, INT_MAX, VE, "motion-est" },
|
|
{ "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA }, INT_MIN, INT_MAX, VE, "motion-est" },
|
|
{ "b_strategy", "Strategy to choose between I/P/B-frames", OFFSET(b_frame_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, VE},
|
|
{ "chromaoffset", "QP difference between chroma and luma", OFFSET(chroma_offset), AV_OPT_TYPE_INT, {.i64 = 0 }, INT_MIN, INT_MAX, VE},
|
|
{ "sc_threshold", "Scene change threshold", OFFSET(scenechange_threshold), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
|
|
{ "noise_reduction", "Noise reduction", OFFSET(noise_reduction), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, VE},
|
|
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass xavs_class = {
|
|
.class_name = "libxavs",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
static const FFCodecDefault xavs_defaults[] = {
|
|
{ "b", "0" },
|
|
{ NULL },
|
|
};
|
|
|
|
const FFCodec ff_libxavs_encoder = {
|
|
.p.name = "libxavs",
|
|
.p.long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
|
|
.p.type = AVMEDIA_TYPE_VIDEO,
|
|
.p.id = AV_CODEC_ID_CAVS,
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
|
|
AV_CODEC_CAP_OTHER_THREADS,
|
|
.priv_data_size = sizeof(XavsContext),
|
|
.init = XAVS_init,
|
|
FF_CODEC_ENCODE_CB(XAVS_frame),
|
|
.close = XAVS_close,
|
|
.caps_internal = FF_CODEC_CAP_AUTO_THREADS,
|
|
.p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
|
|
.p.priv_class = &xavs_class,
|
|
.defaults = xavs_defaults,
|
|
.p.wrapper_name = "libxavs",
|
|
};
|