| 1 | /* |
| 2 | * AVS encoding using the xavs library |
| 3 | * Copyright (C) 2010 Amanda, Y.N. Wu <amanda11192003@gmail.com> |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include <stdio.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <string.h> |
| 25 | #include <math.h> |
| 26 | #include <stdint.h> |
| 27 | #include <float.h> |
| 28 | #include <xavs.h> |
| 29 | #include "avcodec.h" |
| 30 | #include "internal.h" |
| 31 | #include "libavutil/internal.h" |
| 32 | #include "libavutil/mem.h" |
| 33 | #include "libavutil/opt.h" |
| 34 | |
| 35 | #define END_OF_STREAM 0x001 |
| 36 | |
| 37 | #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ |
| 38 | #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ |
| 39 | #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ |
| 40 | |
| 41 | typedef struct XavsContext { |
| 42 | AVClass *class; |
| 43 | xavs_param_t params; |
| 44 | xavs_t *enc; |
| 45 | xavs_picture_t pic; |
| 46 | uint8_t *sei; |
| 47 | int sei_size; |
| 48 | int end_of_stream; |
| 49 | float crf; |
| 50 | int cqp; |
| 51 | int b_bias; |
| 52 | float cplxblur; |
| 53 | int direct_pred; |
| 54 | int aud; |
| 55 | int fast_pskip; |
| 56 | int mbtree; |
| 57 | int mixed_refs; |
| 58 | |
| 59 | int64_t *pts_buffer; |
| 60 | int out_frame_count; |
| 61 | } XavsContext; |
| 62 | |
| 63 | static void XAVS_log(void *p, int level, const char *fmt, va_list args) |
| 64 | { |
| 65 | static const int level_map[] = { |
| 66 | [XAVS_LOG_ERROR] = AV_LOG_ERROR, |
| 67 | [XAVS_LOG_WARNING] = AV_LOG_WARNING, |
| 68 | [XAVS_LOG_INFO] = AV_LOG_INFO, |
| 69 | [XAVS_LOG_DEBUG] = AV_LOG_DEBUG |
| 70 | }; |
| 71 | |
| 72 | if (level < 0 || level > XAVS_LOG_DEBUG) |
| 73 | return; |
| 74 | |
| 75 | av_vlog(p, level_map[level], fmt, args); |
| 76 | } |
| 77 | |
| 78 | static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, |
| 79 | xavs_nal_t *nals, int nnal) |
| 80 | { |
| 81 | XavsContext *x4 = ctx->priv_data; |
| 82 | uint8_t *p; |
| 83 | int i, s, ret, size = x4->sei_size + FF_MIN_BUFFER_SIZE; |
| 84 | |
| 85 | if (!nnal) |
| 86 | return 0; |
| 87 | |
| 88 | for (i = 0; i < nnal; i++) |
| 89 | size += nals[i].i_payload; |
| 90 | |
| 91 | if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0) |
| 92 | return ret; |
| 93 | p = pkt->data; |
| 94 | |
| 95 | /* Write the SEI as part of the first frame. */ |
| 96 | if (x4->sei_size > 0 && nnal > 0) { |
| 97 | memcpy(p, x4->sei, x4->sei_size); |
| 98 | p += x4->sei_size; |
| 99 | x4->sei_size = 0; |
| 100 | } |
| 101 | |
| 102 | for (i = 0; i < nnal; i++) { |
| 103 | s = xavs_nal_encode(p, &size, 1, nals + i); |
| 104 | if (s < 0) |
| 105 | return -1; |
| 106 | p += s; |
| 107 | } |
| 108 | pkt->size = p - pkt->data; |
| 109 | |
| 110 | return 1; |
| 111 | } |
| 112 | |
| 113 | static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt, |
| 114 | const AVFrame *frame, int *got_packet) |
| 115 | { |
| 116 | XavsContext *x4 = avctx->priv_data; |
| 117 | xavs_nal_t *nal; |
| 118 | int nnal, i, ret; |
| 119 | xavs_picture_t pic_out; |
| 120 | |
| 121 | x4->pic.img.i_csp = XAVS_CSP_I420; |
| 122 | x4->pic.img.i_plane = 3; |
| 123 | |
| 124 | if (frame) { |
| 125 | for (i = 0; i < 3; i++) { |
| 126 | x4->pic.img.plane[i] = frame->data[i]; |
| 127 | x4->pic.img.i_stride[i] = frame->linesize[i]; |
| 128 | } |
| 129 | |
| 130 | x4->pic.i_pts = frame->pts; |
| 131 | x4->pic.i_type = XAVS_TYPE_AUTO; |
| 132 | x4->pts_buffer[avctx->frame_number % (avctx->max_b_frames+1)] = frame->pts; |
| 133 | } |
| 134 | |
| 135 | if (xavs_encoder_encode(x4->enc, &nal, &nnal, |
| 136 | frame? &x4->pic: NULL, &pic_out) < 0) |
| 137 | return -1; |
| 138 | |
| 139 | ret = encode_nals(avctx, pkt, nal, nnal); |
| 140 | |
| 141 | if (ret < 0) |
| 142 | return -1; |
| 143 | |
| 144 | if (!ret) { |
| 145 | if (!frame && !(x4->end_of_stream)) { |
| 146 | if ((ret = ff_alloc_packet2(avctx, pkt, 4)) < 0) |
| 147 | return ret; |
| 148 | |
| 149 | pkt->data[0] = 0x0; |
| 150 | pkt->data[1] = 0x0; |
| 151 | pkt->data[2] = 0x01; |
| 152 | pkt->data[3] = 0xb1; |
| 153 | pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)] - |
| 154 | x4->pts_buffer[(x4->out_frame_count-2)%(avctx->max_b_frames+1)]; |
| 155 | x4->end_of_stream = END_OF_STREAM; |
| 156 | *got_packet = 1; |
| 157 | } |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | avctx->coded_frame->pts = pic_out.i_pts; |
| 162 | pkt->pts = pic_out.i_pts; |
| 163 | if (avctx->has_b_frames) { |
| 164 | if (!x4->out_frame_count) |
| 165 | pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); |
| 166 | else |
| 167 | pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(avctx->max_b_frames+1)]; |
| 168 | } else |
| 169 | pkt->dts = pkt->pts; |
| 170 | |
| 171 | switch (pic_out.i_type) { |
| 172 | case XAVS_TYPE_IDR: |
| 173 | case XAVS_TYPE_I: |
| 174 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I; |
| 175 | break; |
| 176 | case XAVS_TYPE_P: |
| 177 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P; |
| 178 | break; |
| 179 | case XAVS_TYPE_B: |
| 180 | case XAVS_TYPE_BREF: |
| 181 | avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B; |
| 182 | break; |
| 183 | } |
| 184 | |
| 185 | /* There is no IDR frame in AVS JiZhun */ |
| 186 | /* Sequence header is used as a flag */ |
| 187 | if (pic_out.i_type == XAVS_TYPE_I) { |
| 188 | avctx->coded_frame->key_frame = 1; |
| 189 | pkt->flags |= AV_PKT_FLAG_KEY; |
| 190 | } |
| 191 | |
| 192 | avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; |
| 193 | |
| 194 | x4->out_frame_count++; |
| 195 | *got_packet = ret; |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | static av_cold int XAVS_close(AVCodecContext *avctx) |
| 200 | { |
| 201 | XavsContext *x4 = avctx->priv_data; |
| 202 | |
| 203 | av_freep(&avctx->extradata); |
| 204 | av_free(x4->sei); |
| 205 | av_freep(&x4->pts_buffer); |
| 206 | |
| 207 | if (x4->enc) |
| 208 | xavs_encoder_close(x4->enc); |
| 209 | |
| 210 | av_frame_free(&avctx->coded_frame); |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | static av_cold int XAVS_init(AVCodecContext *avctx) |
| 216 | { |
| 217 | XavsContext *x4 = avctx->priv_data; |
| 218 | |
| 219 | x4->sei_size = 0; |
| 220 | xavs_param_default(&x4->params); |
| 221 | |
| 222 | x4->params.pf_log = XAVS_log; |
| 223 | x4->params.p_log_private = avctx; |
| 224 | x4->params.i_keyint_max = avctx->gop_size; |
| 225 | if (avctx->bit_rate) { |
| 226 | x4->params.rc.i_bitrate = avctx->bit_rate / 1000; |
| 227 | x4->params.rc.i_rc_method = XAVS_RC_ABR; |
| 228 | } |
| 229 | x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; |
| 230 | x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; |
| 231 | x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; |
| 232 | if (avctx->flags & CODEC_FLAG_PASS2) { |
| 233 | x4->params.rc.b_stat_read = 1; |
| 234 | } else { |
| 235 | if (x4->crf >= 0) { |
| 236 | x4->params.rc.i_rc_method = XAVS_RC_CRF; |
| 237 | x4->params.rc.f_rf_constant = x4->crf; |
| 238 | } else if (x4->cqp >= 0) { |
| 239 | x4->params.rc.i_rc_method = XAVS_RC_CQP; |
| 240 | x4->params.rc.i_qp_constant = x4->cqp; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | if (x4->aud >= 0) |
| 245 | x4->params.b_aud = x4->aud; |
| 246 | if (x4->mbtree >= 0) |
| 247 | x4->params.rc.b_mb_tree = x4->mbtree; |
| 248 | if (x4->direct_pred >= 0) |
| 249 | x4->params.analyse.i_direct_mv_pred = x4->direct_pred; |
| 250 | if (x4->fast_pskip >= 0) |
| 251 | x4->params.analyse.b_fast_pskip = x4->fast_pskip; |
| 252 | if (x4->mixed_refs >= 0) |
| 253 | x4->params.analyse.b_mixed_references = x4->mixed_refs; |
| 254 | if (x4->b_bias != INT_MIN) |
| 255 | x4->params.i_bframe_bias = x4->b_bias; |
| 256 | if (x4->cplxblur >= 0) |
| 257 | x4->params.rc.f_complexity_blur = x4->cplxblur; |
| 258 | |
| 259 | x4->params.i_bframe = avctx->max_b_frames; |
| 260 | /* cabac is not included in AVS JiZhun Profile */ |
| 261 | x4->params.b_cabac = 0; |
| 262 | |
| 263 | x4->params.i_bframe_adaptive = avctx->b_frame_strategy; |
| 264 | |
| 265 | avctx->has_b_frames = !!avctx->max_b_frames; |
| 266 | |
| 267 | /* AVS doesn't allow B picture as reference */ |
| 268 | /* The max allowed reference frame number of B is 2 */ |
| 269 | x4->params.i_keyint_min = avctx->keyint_min; |
| 270 | if (x4->params.i_keyint_min > x4->params.i_keyint_max) |
| 271 | x4->params.i_keyint_min = x4->params.i_keyint_max; |
| 272 | |
| 273 | x4->params.i_scenecut_threshold = avctx->scenechange_threshold; |
| 274 | |
| 275 | // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; |
| 276 | |
| 277 | x4->params.rc.i_qp_min = avctx->qmin; |
| 278 | x4->params.rc.i_qp_max = avctx->qmax; |
| 279 | x4->params.rc.i_qp_step = avctx->max_qdiff; |
| 280 | |
| 281 | x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ |
| 282 | x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ |
| 283 | |
| 284 | x4->params.i_frame_reference = avctx->refs; |
| 285 | |
| 286 | x4->params.i_width = avctx->width; |
| 287 | x4->params.i_height = avctx->height; |
| 288 | x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; |
| 289 | x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; |
| 290 | /* This is only used for counting the fps */ |
| 291 | x4->params.i_fps_num = avctx->time_base.den; |
| 292 | x4->params.i_fps_den = avctx->time_base.num; |
| 293 | x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; |
| 294 | |
| 295 | switch (avctx->me_method) { |
| 296 | case ME_EPZS: |
| 297 | x4->params.analyse.i_me_method = XAVS_ME_DIA; |
| 298 | break; |
| 299 | case ME_HEX: |
| 300 | x4->params.analyse.i_me_method = XAVS_ME_HEX; |
| 301 | break; |
| 302 | case ME_UMH: |
| 303 | x4->params.analyse.i_me_method = XAVS_ME_UMH; |
| 304 | break; |
| 305 | case ME_FULL: |
| 306 | x4->params.analyse.i_me_method = XAVS_ME_ESA; |
| 307 | break; |
| 308 | case ME_TESA: |
| 309 | x4->params.analyse.i_me_method = XAVS_ME_TESA; |
| 310 | break; |
| 311 | default: |
| 312 | x4->params.analyse.i_me_method = XAVS_ME_HEX; |
| 313 | } |
| 314 | |
| 315 | x4->params.analyse.i_me_range = avctx->me_range; |
| 316 | x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; |
| 317 | |
| 318 | x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; |
| 319 | /* AVS P2 only enables 8x8 transform */ |
| 320 | x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT; |
| 321 | |
| 322 | x4->params.analyse.i_trellis = avctx->trellis; |
| 323 | x4->params.analyse.i_noise_reduction = avctx->noise_reduction; |
| 324 | |
| 325 | if (avctx->level > 0) |
| 326 | x4->params.i_level_idc = avctx->level; |
| 327 | |
| 328 | x4->params.rc.f_rate_tolerance = |
| 329 | (float)avctx->bit_rate_tolerance/avctx->bit_rate; |
| 330 | |
| 331 | if ((avctx->rc_buffer_size) && |
| 332 | (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { |
| 333 | x4->params.rc.f_vbv_buffer_init = |
| 334 | (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; |
| 335 | } else |
| 336 | x4->params.rc.f_vbv_buffer_init = 0.9; |
| 337 | |
| 338 | /* TAG:do we have MB tree RC method */ |
| 339 | /* what is the RC method we are now using? Default NO */ |
| 340 | x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); |
| 341 | x4->params.rc.f_pb_factor = avctx->b_quant_factor; |
| 342 | x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; |
| 343 | |
| 344 | x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; |
| 345 | x4->params.i_log_level = XAVS_LOG_DEBUG; |
| 346 | x4->params.i_threads = avctx->thread_count; |
| 347 | x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; |
| 348 | |
| 349 | if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) |
| 350 | x4->params.b_repeat_headers = 0; |
| 351 | |
| 352 | x4->enc = xavs_encoder_open(&x4->params); |
| 353 | if (!x4->enc) |
| 354 | return -1; |
| 355 | |
| 356 | if (!(x4->pts_buffer = av_mallocz_array((avctx->max_b_frames+1), sizeof(*x4->pts_buffer)))) |
| 357 | return AVERROR(ENOMEM); |
| 358 | |
| 359 | avctx->coded_frame = av_frame_alloc(); |
| 360 | if (!avctx->coded_frame) |
| 361 | return AVERROR(ENOMEM); |
| 362 | |
| 363 | /* TAG: Do we have GLOBAL HEADER in AVS */ |
| 364 | /* We Have PPS and SPS in AVS */ |
| 365 | if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { |
| 366 | xavs_nal_t *nal; |
| 367 | int nnal, s, i, size; |
| 368 | uint8_t *p; |
| 369 | |
| 370 | s = xavs_encoder_headers(x4->enc, &nal, &nnal); |
| 371 | |
| 372 | avctx->extradata = p = av_malloc(s); |
| 373 | for (i = 0; i < nnal; i++) { |
| 374 | /* Don't put the SEI in extradata. */ |
| 375 | if (nal[i].i_type == NAL_SEI) { |
| 376 | x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); |
| 377 | if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) |
| 378 | return -1; |
| 379 | |
| 380 | continue; |
| 381 | } |
| 382 | size = xavs_nal_encode(p, &s, 1, nal + i); |
| 383 | if (size < 0) |
| 384 | return -1; |
| 385 | p += size; |
| 386 | } |
| 387 | avctx->extradata_size = p - avctx->extradata; |
| 388 | } |
| 389 | return 0; |
| 390 | } |
| 391 | |
| 392 | #define OFFSET(x) offsetof(XavsContext, x) |
| 393 | #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM |
| 394 | static const AVOption options[] = { |
| 395 | { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, |
| 396 | { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, |
| 397 | { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, |
| 398 | { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, |
| 399 | { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, |
| 400 | { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, |
| 401 | { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, |
| 402 | { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, |
| 403 | { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, |
| 404 | { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
| 405 | { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
| 406 | { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE }, |
| 407 | { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, |
| 408 | { NULL }, |
| 409 | }; |
| 410 | |
| 411 | static const AVClass xavs_class = { |
| 412 | .class_name = "libxavs", |
| 413 | .item_name = av_default_item_name, |
| 414 | .option = options, |
| 415 | .version = LIBAVUTIL_VERSION_INT, |
| 416 | }; |
| 417 | |
| 418 | static const AVCodecDefault xavs_defaults[] = { |
| 419 | { "b", "0" }, |
| 420 | { NULL }, |
| 421 | }; |
| 422 | |
| 423 | AVCodec ff_libxavs_encoder = { |
| 424 | .name = "libxavs", |
| 425 | .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"), |
| 426 | .type = AVMEDIA_TYPE_VIDEO, |
| 427 | .id = AV_CODEC_ID_CAVS, |
| 428 | .priv_data_size = sizeof(XavsContext), |
| 429 | .init = XAVS_init, |
| 430 | .encode2 = XAVS_frame, |
| 431 | .close = XAVS_close, |
| 432 | .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, |
| 433 | .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
| 434 | .priv_class = &xavs_class, |
| 435 | .defaults = xavs_defaults, |
| 436 | }; |