| /* |
| * AVS encoding using the xavs library |
| * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <math.h> |
| #include <stdint.h> |
| #include <float.h> |
| #include <xavs.h> |
| #include "avcodec.h" |
| #include "internal.h" |
| #include "libavutil/opt.h" |
| |
| #define END_OF_STREAM 0x001 |
| |
| #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ |
| #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ |
| #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ |
| |
| typedef struct XavsContext { |
| xavs_param_t params; |
| xavs_t *enc; |
| xavs_picture_t pic; |
| uint8_t *sei; |
| int sei_size; |
| AVFrame out_pic; |
| int end_of_stream; |
| float crf; |
| int cqp; |
| int b_bias; |
| float cplxblur; |
| int direct_pred; |
| int aud; |
| int fast_pskip; |
| int mbtree; |
| int mixed_refs; |
| } XavsContext; |
| |
| static void XAVS_log(void *p, int level, const char *fmt, va_list args) |
| { |
| static const int level_map[] = { |
| [XAVS_LOG_ERROR] = AV_LOG_ERROR, |
| [XAVS_LOG_WARNING] = AV_LOG_WARNING, |
| [XAVS_LOG_INFO] = AV_LOG_INFO, |
| [XAVS_LOG_DEBUG] = AV_LOG_DEBUG |
| }; |
| |
| if (level < 0 || level > XAVS_LOG_DEBUG) |
| return; |
| |
| av_vlog(p, level_map[level], fmt, args); |
| } |
| |
| static int encode_nals(AVCodecContext *ctx, uint8_t *buf, |
| int size, xavs_nal_t *nals, |
| int nnal, int skip_sei) |
| { |
| XavsContext *x4 = ctx->priv_data; |
| uint8_t *p = buf; |
| int i, s; |
| |
| /* Write the SEI as part of the first frame. */ |
| if (x4->sei_size > 0 && nnal > 0) { |
| memcpy(p, x4->sei, x4->sei_size); |
| p += x4->sei_size; |
| x4->sei_size = 0; |
| } |
| |
| for (i = 0; i < nnal; i++) { |
| /* Don't put the SEI in extradata. */ |
| if (skip_sei && nals[i].i_type == NAL_SEI) { |
| x4->sei = av_malloc( 5 + nals[i].i_payload * 4 / 3 ); |
| if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nals + i) < 0) |
| return -1; |
| |
| continue; |
| } |
| s = xavs_nal_encode(p, &size, 1, nals + i); |
| if (s < 0) |
| return -1; |
| p += s; |
| } |
| |
| return p - buf; |
| } |
| |
| static int XAVS_frame(AVCodecContext *ctx, uint8_t *buf, |
| int bufsize, void *data) |
| { |
| XavsContext *x4 = ctx->priv_data; |
| AVFrame *frame = data; |
| xavs_nal_t *nal; |
| int nnal, i; |
| xavs_picture_t pic_out; |
| |
| x4->pic.img.i_csp = XAVS_CSP_I420; |
| x4->pic.img.i_plane = 3; |
| |
| if (frame) { |
| for (i = 0; i < 3; i++) { |
| x4->pic.img.plane[i] = frame->data[i]; |
| x4->pic.img.i_stride[i] = frame->linesize[i]; |
| } |
| |
| x4->pic.i_pts = frame->pts; |
| x4->pic.i_type = XAVS_TYPE_AUTO; |
| } |
| |
| if (xavs_encoder_encode(x4->enc, &nal, &nnal, |
| frame? &x4->pic: NULL, &pic_out) < 0) |
| return -1; |
| |
| bufsize = encode_nals(ctx, buf, bufsize, nal, nnal, 0); |
| |
| if (bufsize < 0) |
| return -1; |
| |
| if (!bufsize && !frame && !(x4->end_of_stream)){ |
| buf[bufsize] = 0x0; |
| buf[bufsize+1] = 0x0; |
| buf[bufsize+2] = 0x01; |
| buf[bufsize+3] = 0xb1; |
| bufsize += 4; |
| x4->end_of_stream = END_OF_STREAM; |
| return bufsize; |
| } |
| /* FIXME: libxavs now provides DTS */ |
| /* but AVFrame doesn't have a field for it. */ |
| x4->out_pic.pts = pic_out.i_pts; |
| |
| switch (pic_out.i_type) { |
| case XAVS_TYPE_IDR: |
| case XAVS_TYPE_I: |
| x4->out_pic.pict_type = AV_PICTURE_TYPE_I; |
| break; |
| case XAVS_TYPE_P: |
| x4->out_pic.pict_type = AV_PICTURE_TYPE_P; |
| break; |
| case XAVS_TYPE_B: |
| case XAVS_TYPE_BREF: |
| x4->out_pic.pict_type = AV_PICTURE_TYPE_B; |
| break; |
| } |
| |
| /* There is no IDR frame in AVS JiZhun */ |
| /* Sequence header is used as a flag */ |
| x4->out_pic.key_frame = pic_out.i_type == XAVS_TYPE_I; |
| |
| x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; |
| |
| return bufsize; |
| } |
| |
| static av_cold int XAVS_close(AVCodecContext *avctx) |
| { |
| XavsContext *x4 = avctx->priv_data; |
| |
| av_freep(&avctx->extradata); |
| av_free(x4->sei); |
| |
| if (x4->enc) |
| xavs_encoder_close(x4->enc); |
| |
| return 0; |
| } |
| |
| static av_cold int XAVS_init(AVCodecContext *avctx) |
| { |
| XavsContext *x4 = avctx->priv_data; |
| |
| x4->sei_size = 0; |
| xavs_param_default(&x4->params); |
| |
| x4->params.pf_log = XAVS_log; |
| x4->params.p_log_private = avctx; |
| x4->params.i_keyint_max = avctx->gop_size; |
| if (avctx->bit_rate) { |
| x4->params.rc.i_bitrate = avctx->bit_rate / 1000; |
| x4->params.rc.i_rc_method = XAVS_RC_ABR; |
| } |
| x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; |
| x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; |
| x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; |
| if (avctx->flags & CODEC_FLAG_PASS2) { |
| x4->params.rc.b_stat_read = 1; |
| } else { |
| #if FF_API_X264_GLOBAL_OPTS |
| if (avctx->crf) { |
| x4->params.rc.i_rc_method = XAVS_RC_CRF; |
| x4->params.rc.f_rf_constant = avctx->crf; |
| } else if (avctx->cqp > -1) { |
| x4->params.rc.i_rc_method = XAVS_RC_CQP; |
| x4->params.rc.i_qp_constant = avctx->cqp; |
| } |
| #endif |
| |
| if (x4->crf >= 0) { |
| x4->params.rc.i_rc_method = XAVS_RC_CRF; |
| x4->params.rc.f_rf_constant = x4->crf; |
| } else if (x4->cqp >= 0) { |
| x4->params.rc.i_rc_method = XAVS_RC_CQP; |
| x4->params.rc.i_qp_constant = x4->cqp; |
| } |
| } |
| |
| #if FF_API_X264_GLOBAL_OPTS |
| if (avctx->bframebias) |
| x4->params.i_bframe_bias = avctx->bframebias; |
| if (avctx->deblockalpha) |
| x4->params.i_deblocking_filter_alphac0 = avctx->deblockalpha; |
| if (avctx->deblockbeta) |
| x4->params.i_deblocking_filter_beta = avctx->deblockbeta; |
| if (avctx->complexityblur >= 0) |
| x4->params.rc.f_complexity_blur = avctx->complexityblur; |
| if (avctx->directpred >= 0) |
| x4->params.analyse.i_direct_mv_pred = avctx->directpred; |
| if (avctx->partitions) { |
| if (avctx->partitions & XAVS_PART_I8X8) |
| x4->params.analyse.inter |= XAVS_ANALYSE_I8x8; |
| if (avctx->partitions & XAVS_PART_P8X8) |
| x4->params.analyse.inter |= XAVS_ANALYSE_PSUB16x16; |
| if (avctx->partitions & XAVS_PART_B8X8) |
| x4->params.analyse.inter |= XAVS_ANALYSE_BSUB16x16; |
| } |
| x4->params.rc.b_mb_tree = !!(avctx->flags2 & CODEC_FLAG2_MBTREE); |
| x4->params.b_aud = avctx->flags2 & CODEC_FLAG2_AUD; |
| x4->params.analyse.b_mixed_references = avctx->flags2 & CODEC_FLAG2_MIXED_REFS; |
| x4->params.analyse.b_fast_pskip = avctx->flags2 & CODEC_FLAG2_FASTPSKIP; |
| x4->params.analyse.b_weighted_bipred = avctx->flags2 & CODEC_FLAG2_WPRED; |
| #endif |
| |
| if (x4->aud >= 0) |
| x4->params.b_aud = x4->aud; |
| if (x4->mbtree >= 0) |
| x4->params.rc.b_mb_tree = x4->mbtree; |
| if (x4->direct_pred >= 0) |
| x4->params.analyse.i_direct_mv_pred = x4->direct_pred; |
| if (x4->fast_pskip >= 0) |
| x4->params.analyse.b_fast_pskip = x4->fast_pskip; |
| if (x4->mixed_refs >= 0) |
| x4->params.analyse.b_mixed_references = x4->mixed_refs; |
| if (x4->b_bias != INT_MIN) |
| x4->params.i_bframe_bias = x4->b_bias; |
| if (x4->cplxblur >= 0) |
| x4->params.rc.f_complexity_blur = x4->cplxblur; |
| |
| x4->params.i_bframe = avctx->max_b_frames; |
| /* cabac is not included in AVS JiZhun Profile */ |
| x4->params.b_cabac = 0; |
| |
| x4->params.i_bframe_adaptive = avctx->b_frame_strategy; |
| |
| avctx->has_b_frames = !!avctx->max_b_frames; |
| |
| /* AVS doesn't allow B picture as reference */ |
| /* The max allowed reference frame number of B is 2 */ |
| x4->params.i_keyint_min = avctx->keyint_min; |
| if (x4->params.i_keyint_min > x4->params.i_keyint_max) |
| x4->params.i_keyint_min = x4->params.i_keyint_max; |
| |
| x4->params.i_scenecut_threshold = avctx->scenechange_threshold; |
| |
| // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; |
| |
| x4->params.rc.i_qp_min = avctx->qmin; |
| x4->params.rc.i_qp_max = avctx->qmax; |
| x4->params.rc.i_qp_step = avctx->max_qdiff; |
| |
| x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ |
| x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ |
| |
| x4->params.i_frame_reference = avctx->refs; |
| |
| x4->params.i_width = avctx->width; |
| x4->params.i_height = avctx->height; |
| x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; |
| x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; |
| /* This is only used for counting the fps */ |
| x4->params.i_fps_num = avctx->time_base.den; |
| x4->params.i_fps_den = avctx->time_base.num; |
| x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; |
| |
| switch (avctx->me_method) { |
| case ME_EPZS: |
| x4->params.analyse.i_me_method = XAVS_ME_DIA; |
| break; |
| case ME_HEX: |
| x4->params.analyse.i_me_method = XAVS_ME_HEX; |
| break; |
| case ME_UMH: |
| x4->params.analyse.i_me_method = XAVS_ME_UMH; |
| break; |
| case ME_FULL: |
| x4->params.analyse.i_me_method = XAVS_ME_ESA; |
| break; |
| case ME_TESA: |
| x4->params.analyse.i_me_method = XAVS_ME_TESA; |
| break; |
| default: |
| x4->params.analyse.i_me_method = XAVS_ME_HEX; |
| } |
| |
| x4->params.analyse.i_me_range = avctx->me_range; |
| x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; |
| |
| x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; |
| /* AVS P2 only enables 8x8 transform */ |
| x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT; |
| |
| x4->params.analyse.i_trellis = avctx->trellis; |
| x4->params.analyse.i_noise_reduction = avctx->noise_reduction; |
| |
| if (avctx->level > 0) |
| x4->params.i_level_idc = avctx->level; |
| |
| x4->params.rc.f_rate_tolerance = |
| (float)avctx->bit_rate_tolerance/avctx->bit_rate; |
| |
| if ((avctx->rc_buffer_size) && |
| (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { |
| x4->params.rc.f_vbv_buffer_init = |
| (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; |
| } else |
| x4->params.rc.f_vbv_buffer_init = 0.9; |
| |
| /* TAG:do we have MB tree RC method */ |
| /* what is the RC method we are now using? Default NO */ |
| x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); |
| x4->params.rc.f_pb_factor = avctx->b_quant_factor; |
| x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; |
| |
| x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; |
| x4->params.i_log_level = XAVS_LOG_DEBUG; |
| x4->params.i_threads = avctx->thread_count; |
| x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; |
| |
| if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) |
| x4->params.b_repeat_headers = 0; |
| |
| x4->enc = xavs_encoder_open(&x4->params); |
| if (!x4->enc) |
| return -1; |
| |
| avctx->coded_frame = &x4->out_pic; |
| /* TAG: Do we have GLOBAL HEADER in AVS */ |
| /* We Have PPS and SPS in AVS */ |
| if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { |
| xavs_nal_t *nal; |
| int nnal, s; |
| |
| s = xavs_encoder_headers(x4->enc, &nal, &nnal); |
| |
| avctx->extradata = av_malloc(s); |
| avctx->extradata_size = encode_nals(avctx, avctx->extradata, s, nal, nnal, 1); |
| } |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(XavsContext, x) |
| #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE }, |
| { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE }, |
| { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {INT_MIN}, INT_MIN, INT_MAX, VE }, |
| { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {-1 }, -1, FLT_MAX, VE}, |
| { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {-1 }, -1, INT_MAX, VE, "direct-pred" }, |
| { "none", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, |
| { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, |
| { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, |
| { "auto", NULL, 0, AV_OPT_TYPE_CONST, { XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, |
| { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, |
| { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, |
| { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {-1}, -1, 1, VE }, |
| { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {-1 }, -1, 1, VE}, |
| { NULL }, |
| }; |
| |
| static const AVClass 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", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_CAVS, |
| .priv_data_size = sizeof(XavsContext), |
| .init = XAVS_init, |
| .encode = XAVS_frame, |
| .close = XAVS_close, |
| .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, |
| .pix_fmts = (const enum PixelFormat[]) { PIX_FMT_YUV420P, PIX_FMT_NONE }, |
| .long_name = NULL_IF_CONFIG_SMALL("libxavs - the Chinese Audio Video Standard Encoder"), |
| .priv_class = &class, |
| .defaults = xavs_defaults, |
| }; |
| |
