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484 lines
17 KiB
C
Executable File
484 lines
17 KiB
C
Executable File
/*
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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 "internal.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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uint8_t *p;
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int i, s, ret, size = x4->sei_size + AV_INPUT_BUFFER_MIN_SIZE;
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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 += nals[i].i_payload;
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if ((ret = ff_alloc_packet2(ctx, pkt, size, 0)) < 0)
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return ret;
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p = pkt->data;
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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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s = xavs_nal_encode(p, &size, 1, nals + i);
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if (s < 0)
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return -1;
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p += s;
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}
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pkt->size = p - pkt->data;
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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 -1;
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ret = encode_nals(avctx, pkt, nal, nnal);
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if (ret < 0)
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return -1;
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if (!ret) {
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if (!frame && !(x4->end_of_stream)) {
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if ((ret = ff_alloc_packet2(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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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->pts = pic_out.i_pts;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->pict_type = pict_type;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->key_frame = 1;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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pkt->flags |= AV_PKT_FLAG_KEY;
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}
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#if FF_API_CODED_FRAME
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FF_DISABLE_DEPRECATION_WARNINGS
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avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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(&avctx->extradata);
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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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#if FF_API_PRIVATE_OPT
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FF_DISABLE_DEPRECATION_WARNINGS
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if (avctx->b_frame_strategy)
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x4->b_frame_strategy = avctx->b_frame_strategy;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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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#if FF_API_PRIVATE_OPT
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FF_DISABLE_DEPRECATION_WARNINGS
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if (avctx->scenechange_threshold)
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x4->scenechange_threshold = avctx->scenechange_threshold;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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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#if FF_API_PRIVATE_OPT
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FF_DISABLE_DEPRECATION_WARNINGS
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if (avctx->noise_reduction >= 0)
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x4->noise_reduction = avctx->noise_reduction;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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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#if FF_API_PRIVATE_OPT
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FF_DISABLE_DEPRECATION_WARNINGS
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if (avctx->chromaoffset)
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x4->chroma_offset = avctx->chromaoffset;
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FF_ENABLE_DEPRECATION_WARNINGS
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#endif
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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 -1;
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if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer))))
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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" },
|
|
{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" },
|
|
{ "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" },
|
|
{ "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" },
|
|
{ "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" },
|
|
{ "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
|
|
{ "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
|
|
{ "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 },
|
|
{ "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_BOOL, {.i64 = -1 }, -1, 1, VE},
|
|
{ "motion-est", "Set motion estimation method", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = XAVS_ME_DIA }, -1, XAVS_ME_TESA, VE, "motion-est"},
|
|
{ "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, "motion-est" },
|
|
{ "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, "motion-est" },
|
|
{ "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, "motion-est" },
|
|
{ "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 AVCodecDefault xavs_defaults[] = {
|
|
{ "b", "0" },
|
|
{ NULL },
|
|
};
|
|
|
|
AVCodec ff_libxavs_encoder = {
|
|
.name = "libxavs",
|
|
.long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_CAVS,
|
|
.priv_data_size = sizeof(XavsContext),
|
|
.init = XAVS_init,
|
|
.encode2 = XAVS_frame,
|
|
.close = XAVS_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
|
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
|
|
.priv_class = &xavs_class,
|
|
.defaults = xavs_defaults,
|
|
.wrapper_name = "libxavs",
|
|
};
|