mirror of https://github.com/FFmpeg/FFmpeg.git
Originally committed as revision 24533 to svn://svn.ffmpeg.org/ffmpeg/trunkoldabi
Stefan Gehrer
15 years ago
parent
54d1d1ba17
commit
de29597680
9 changed files with 381 additions and 4 deletions
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/*
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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 <xavs.h> |
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#include "avcodec.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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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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AVFrame out_pic; |
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int end_of_stream; |
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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, uint8_t *buf, |
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int size, xavs_nal_t *nals, |
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int nnal, int skip_sei) |
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{ |
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XavsContext *x4 = ctx->priv_data; |
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uint8_t *p = buf; |
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int i, s; |
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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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/* Don't put the SEI in extradata. */ |
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if (skip_sei && nals[i].i_type == NAL_SEI) { |
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x4->sei = av_malloc( 5 + nals[i].i_payload * 4 / 3 ); |
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if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nals + i) < 0) |
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return -1; |
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continue; |
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} |
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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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return p - buf; |
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} |
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static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf, |
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int bufsize, void *data) |
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{ |
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XavsContext *x4 = ctx->priv_data; |
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AVFrame *frame = data; |
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xavs_nal_t *nal; |
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int nnal, i; |
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xavs_picture_t pic_out; |
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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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} |
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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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bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0); |
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if (bufsize < 0) |
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return -1; |
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if (!bufsize && !frame && !(x4->end_of_stream)){ |
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buf[bufsize] = 0x0; |
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buf[bufsize+1] = 0x0; |
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buf[bufsize+2] = 0x01; |
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buf[bufsize+3] = 0xb1; |
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bufsize += 4; |
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x4->end_of_stream = END_OF_STREAM; |
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return bufsize; |
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} |
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/* FIXME: libxavs now provides DTS */ |
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/* but AVFrame doesn't have a field for it. */ |
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x4->out_pic.pts = pic_out.i_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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x4->out_pic.pict_type = FF_I_TYPE; |
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break; |
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case XAVS_TYPE_P: |
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x4->out_pic.pict_type = FF_P_TYPE; |
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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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x4->out_pic.pict_type = FF_B_TYPE; |
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break; |
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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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x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I; |
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x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; |
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return bufsize; |
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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_free(x4->sei); |
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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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x4->params.rc.i_bitrate = avctx->bit_rate / 1000; |
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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 & CODEC_FLAG_PASS1; |
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if (avctx->flags & CODEC_FLAG_PASS2) { |
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x4->params.rc.b_stat_read = 1; |
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} else { |
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if (avctx->crf) { |
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x4->params.rc.i_rc_method = XAVS_RC_CRF; |
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x4->params.rc.f_rf_constant = avctx->crf; |
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} else if (avctx->cqp > -1) { |
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x4->params.rc.i_rc_method = XAVS_RC_CQP; |
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x4->params.rc.i_qp_constant = avctx->cqp; |
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} |
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} |
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/* if neither crf nor cqp modes are selected we have to enable the RC */ |
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/* we do it this way because we cannot check if the bitrate has been set */ |
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if (!(avctx->crf || (avctx->cqp > -1))) |
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x4->params.rc.i_rc_method = XAVS_RC_ABR; |
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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 = avctx->b_frame_strategy; |
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x4->params.i_bframe_bias = avctx->bframebias; |
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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 = avctx->scenechange_threshold; |
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// x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER;
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x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha; |
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x4->params.i_deblocking_filter_beta = avctx->deblockbeta; |
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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.rc.f_complexity_blur = avctx->complexityblur; |
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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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if (avctx->partitions) { |
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if (avctx->partitions & XAVS_PART_I8X8) |
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x4->params.analyse.inter |= XAVS_ANALYSE_I8x8; |
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if (avctx->partitions & XAVS_PART_P8X8) |
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x4->params.analyse.inter |= XAVS_ANALYSE_PSUB16x16; |
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if (avctx->partitions & XAVS_PART_B8X8) |
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x4->params.analyse.inter |= XAVS_ANALYSE_BSUB16x16; |
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} |
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x4->params.analyse.i_direct_mv_pred = avctx->directpred; |
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x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED; |
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switch (avctx->me_method) { |
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case ME_EPZS: |
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x4->params.analyse.i_me_method = XAVS_ME_DIA; |
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break; |
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case ME_HEX: |
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x4->params.analyse.i_me_method = XAVS_ME_HEX; |
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break; |
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case ME_UMH: |
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x4->params.analyse.i_me_method = XAVS_ME_UMH; |
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break; |
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case ME_FULL: |
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x4->params.analyse.i_me_method = XAVS_ME_ESA; |
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break; |
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case ME_TESA: |
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x4->params.analyse.i_me_method = XAVS_ME_TESA; |
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break; |
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default: |
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x4->params.analyse.i_me_method = XAVS_ME_HEX; |
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} |
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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_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS; |
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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 & CODEC_FLAG2_8X8DCT;
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x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP; |
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x4->params.analyse.i_trellis = avctx->trellis; |
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x4->params.analyse.i_noise_reduction = avctx->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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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.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE); |
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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 = avctx->chromaoffset; |
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x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; |
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x4->params.i_log_level = XAVS_LOG_DEBUG; |
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x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; |
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x4->params.i_threads = avctx->thread_count; |
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x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; |
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if (avctx->flags & 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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avctx->coded_frame = &x4->out_pic; |
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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 & CODEC_FLAG_GLOBAL_HEADER) { |
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xavs_nal_t *nal; |
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int nnal, s; |
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s = xavs_encoder_headers(x4->enc, &nal, &nnal); |
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avctx->extradata = av_malloc(s); |
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avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1); |
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} |
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return 0; |
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} |
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AVCodec libxavs_encoder = { |
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.name = "libxavs", |
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.type = CODEC_TYPE_VIDEO, |
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.id = CODEC_ID_CAVS, |
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.priv_data_size = sizeof(XavsContext), |
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.init = XAVS_init, |
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.encode = XAVS_frame, |
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.close = XAVS_close, |
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.capabilities = CODEC_CAP_DELAY, |
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.pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE }, |
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.long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"), |
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}; |
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