| /* | |
| * 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 "codec_internal.h" | |
| #include "encode.h" | |
| #include "packet_internal.h" | |
| #include "libavutil/internal.h" | |
| #include "libavutil/mem.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 { | |
| AVClass *class; | |
| xavs_param_t params; | |
| xavs_t *enc; | |
| xavs_picture_t pic; | |
| uint8_t *sei; | |
| int sei_size; | |
| int end_of_stream; | |
| float crf; | |
| int cqp; | |
| int b_bias; | |
| float cplxblur; | |
| int direct_pred; | |
| int aud; | |
| int fast_pskip; | |
| int motion_est; | |
| int mbtree; | |
| int mixed_refs; | |
| int b_frame_strategy; | |
| int chroma_offset; | |
| int scenechange_threshold; | |
| int noise_reduction; | |
| int64_t *pts_buffer; | |
| int out_frame_count; | |
| } 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, AVPacket *pkt, | |
| xavs_nal_t *nals, int nnal) | |
| { | |
| XavsContext *x4 = ctx->priv_data; | |
| int64_t size = x4->sei_size; | |
| uint8_t *p, *p_end; | |
| int i, s, ret; | |
| if (!nnal) | |
| return 0; | |
| for (i = 0; i < nnal; i++) | |
| size += 3U + nals[i].i_payload; | |
| if ((ret = ff_get_encode_buffer(ctx, pkt, size, 0)) < 0) | |
| return ret; | |
| p = pkt->data; | |
| p_end = pkt->data + size; | |
| /* 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++) { | |
| int size = p_end - p; | |
| s = xavs_nal_encode(p, &size, 1, nals + i); | |
| if (s < 0) | |
| return AVERROR_EXTERNAL; | |
| if (s != 3U + nals[i].i_payload) | |
| return AVERROR_EXTERNAL; | |
| p += s; | |
| } | |
| return 1; | |
| } | |
| static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| const AVFrame *frame, int *got_packet) | |
| { | |
| XavsContext *x4 = avctx->priv_data; | |
| xavs_nal_t *nal; | |
| int nnal, i, ret; | |
| xavs_picture_t pic_out; | |
| int pict_type; | |
| 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; | |
| x4->pts_buffer[avctx->frame_num % (avctx->max_b_frames+1)] = frame->pts; | |
| } | |
| if (xavs_encoder_encode(x4->enc, &nal, &nnal, | |
| frame? &x4->pic: NULL, &pic_out) < 0) | |
| return AVERROR_EXTERNAL; | |
| ret = encode_nals(avctx, pkt, nal, nnal); | |
| if (ret < 0) | |
| return ret; | |
| if (!ret) { | |
| if (!frame && !(x4->end_of_stream)) { | |
| if ((ret = ff_get_encode_buffer(avctx, pkt, 4, 0)) < 0) | |
| return ret; | |
| pkt->data[0] = 0x0; | |
| pkt->data[1] = 0x0; | |
| pkt->data[2] = 0x01; | |
| pkt->data[3] = 0xb1; | |
| pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] - | |
| x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)]; | |
| x4->end_of_stream = END_OF_STREAM; | |
| *got_packet = 1; | |
| } | |
| return 0; | |
| } | |
| pkt->pts = pic_out.i_pts; | |
| if (avctx->has_b_frames) { | |
| if (!x4->out_frame_count) | |
| pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); | |
| else | |
| pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)]; | |
| } else | |
| pkt->dts = pkt->pts; | |
| switch (pic_out.i_type) { | |
| case XAVS_TYPE_IDR: | |
| case XAVS_TYPE_I: | |
| pict_type = AV_PICTURE_TYPE_I; | |
| break; | |
| case XAVS_TYPE_P: | |
| pict_type = AV_PICTURE_TYPE_P; | |
| break; | |
| case XAVS_TYPE_B: | |
| case XAVS_TYPE_BREF: | |
| pict_type = AV_PICTURE_TYPE_B; | |
| break; | |
| default: | |
| pict_type = AV_PICTURE_TYPE_NONE; | |
| } | |
| /* There is no IDR frame in AVS JiZhun */ | |
| /* Sequence header is used as a flag */ | |
| if (pic_out.i_type == XAVS_TYPE_I) { | |
| pkt->flags |= AV_PKT_FLAG_KEY; | |
| } | |
| ff_side_data_set_encoder_stats(pkt, (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA, NULL, 0, pict_type); | |
| x4->out_frame_count++; | |
| *got_packet = ret; | |
| return 0; | |
| } | |
| static av_cold int XAVS_close(AVCodecContext *avctx) | |
| { | |
| XavsContext *x4 = avctx->priv_data; | |
| av_freep(&x4->sei); | |
| av_freep(&x4->pts_buffer); | |
| 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 & AV_CODEC_FLAG_PASS1; | |
| if (avctx->flags & AV_CODEC_FLAG_PASS2) { | |
| x4->params.rc.b_stat_read = 1; | |
| } else { | |
| 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 (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->motion_est >= 0) | |
| x4->params.analyse.i_me_method = x4->motion_est; | |
| 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 = x4->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 = x4->scenechange_threshold; | |
| // x4->params.b_deblocking_filter = avctx->flags & AV_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; | |
| 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 & AV_CODEC_FLAG2_8X8DCT; | |
| x4->params.analyse.i_trellis = avctx->trellis; | |
| x4->params.analyse.i_noise_reduction = x4->noise_reduction; | |
| if (avctx->level > 0) | |
| x4->params.i_level_idc = avctx->level; | |
| if (avctx->bit_rate > 0) | |
| 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 = x4->chroma_offset; | |
| x4->params.analyse.b_psnr = avctx->flags & AV_CODEC_FLAG_PSNR; | |
| x4->params.i_log_level = XAVS_LOG_DEBUG; | |
| x4->params.i_threads = avctx->thread_count; | |
| x4->params.b_interlaced = avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT; | |
| if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) | |
| x4->params.b_repeat_headers = 0; | |
| x4->enc = xavs_encoder_open(&x4->params); | |
| if (!x4->enc) | |
| return AVERROR_EXTERNAL; | |
| if (!FF_ALLOCZ_TYPED_ARRAY(x4->pts_buffer, avctx->max_b_frames + 1)) | |
| return AVERROR(ENOMEM); | |
| /* TAG: Do we have GLOBAL HEADER in AVS */ | |
| /* We Have PPS and SPS in AVS */ | |
| if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER && 0) { | |
| xavs_nal_t *nal; | |
| int nnal, s, i, size; | |
| uint8_t *p; | |
| s = xavs_encoder_headers(x4->enc, &nal, &nnal); | |
| avctx->extradata = p = av_malloc(s); | |
| for (i = 0; i < nnal; i++) { | |
| /* Don't put the SEI in extradata. */ | |
| if (nal[i].i_type == NAL_SEI) { | |
| x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); | |
| if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) | |
| return -1; | |
| continue; | |
| } | |
| size = xavs_nal_encode(p, &s, 1, nal + i); | |
| if (size < 0) | |
| return -1; | |
| p += size; | |
| } | |
| avctx->extradata_size = p - avctx->extradata; | |
| } | |
| 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, {.dbl = -1 }, -1, FLT_MAX, VE }, | |
| { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, | |
| { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, | |
| { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, | |
| { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, .unit = "direct-pred" }, | |
| { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, .unit = "direct-pred" }, | |
| { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, .unit = "direct-pred" }, | |
| { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, .unit = "direct-pred" }, | |
| { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, .unit = "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, .unit = "motion-est"}, | |
| { "dia", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_DIA }, INT_MIN, INT_MAX, VE, .unit = "motion-est" }, | |
| { "hex", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_HEX }, INT_MIN, INT_MAX, VE, .unit = "motion-est" }, | |
| { "umh", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_UMH }, INT_MIN, INT_MAX, VE, .unit = "motion-est" }, | |
| { "esa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_ESA }, INT_MIN, INT_MAX, VE, .unit = "motion-est" }, | |
| { "tesa", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_ME_TESA }, INT_MIN, INT_MAX, VE, .unit = "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", | |
| CODEC_LONG_NAME("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_NOT_INIT_THREADSAFE | | |
| 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", | |
| }; |