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| 1 | +/* |
| 2 | + * libxevd decoder |
| 3 | + * EVC (MPEG-5 Essential Video Coding) decoding using XEVD MPEG-5 EVC decoder library |
| 4 | + * |
| 5 | + * Copyright (C) 2021 Dawid Kozinski <d.kozinski@samsung.com> |
| 6 | + * |
| 7 | + * This file is part of FFmpeg. |
| 8 | + * |
| 9 | + * FFmpeg is free software; you can redistribute it and/or |
| 10 | + * modify it under the terms of the GNU Lesser General Public |
| 11 | + * License as published by the Free Software Foundation; either |
| 12 | + * version 2.1 of the License, or (at your option) any later version. |
| 13 | + * |
| 14 | + * FFmpeg is distributed in the hope that it will be useful, |
| 15 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | + * Lesser General Public License for more details. |
| 18 | + * |
| 19 | + * You should have received a copy of the GNU Lesser General Public |
| 20 | + * License along with FFmpeg; if not, write to the Free Software |
| 21 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 22 | + */ |
| 23 | + |
| 24 | +#include <float.h> |
| 25 | +#include <stdlib.h> |
| 26 | + |
| 27 | +#include <xevd.h> |
| 28 | + |
| 29 | +#include "libavutil/internal.h" |
| 30 | +#include "libavutil/common.h" |
| 31 | +#include "libavutil/opt.h" |
| 32 | +#include "libavutil/pixdesc.h" |
| 33 | +#include "libavutil/pixfmt.h" |
| 34 | +#include "libavutil/imgutils.h" |
| 35 | +#include "libavutil/cpu.h" |
| 36 | + |
| 37 | +#include "avcodec.h" |
| 38 | +#include "internal.h" |
| 39 | +#include "packet_internal.h" |
| 40 | +#include "codec_internal.h" |
| 41 | +#include "profiles.h" |
| 42 | +#include "decode.h" |
| 43 | + |
| 44 | +#define XEVD_PARAM_BAD_NAME -1 |
| 45 | +#define XEVD_PARAM_BAD_VALUE -2 |
| 46 | + |
| 47 | +#define EVC_NAL_HEADER_SIZE 2 /* byte */ |
| 48 | + |
| 49 | +/** |
| 50 | + * The structure stores all the states associated with the instance of Xeve MPEG-5 EVC decoder |
| 51 | + */ |
| 52 | +typedef struct XevdContext { |
| 53 | + const AVClass *class; |
| 54 | + |
| 55 | + XEVD id; // XEVD instance identifier @see xevd.h |
| 56 | + XEVD_CDSC cdsc; // decoding parameters @see xevd.h |
| 57 | + |
| 58 | + // If end of stream occurs it is required "flushing" (aka draining) the codec, |
| 59 | + // as the codec might buffer multiple frames or packets internally. |
| 60 | + int draining_mode; // The flag is set if codec enters draining mode. |
| 61 | + |
| 62 | + AVPacket *pkt; // access unit (a set of NAL units that are consecutive in decoding order and containing exactly one encoded image) |
| 63 | +} XevdContext; |
| 64 | + |
| 65 | +/** |
| 66 | + * The function populates the XEVD_CDSC structure. |
| 67 | + * XEVD_CDSC contains all decoder parameters that should be initialized before its use. |
| 68 | + * |
| 69 | + * @param[in] avctx codec context |
| 70 | + * @param[out] cdsc contains all decoder parameters that should be initialized before its use |
| 71 | + * |
| 72 | + */ |
| 73 | +static void get_conf(AVCodecContext *avctx, XEVD_CDSC *cdsc) |
| 74 | +{ |
| 75 | + int cpu_count = av_cpu_count(); |
| 76 | + |
| 77 | + /* clear XEVS_CDSC structure */ |
| 78 | + memset(cdsc, 0, sizeof(XEVD_CDSC)); |
| 79 | + |
| 80 | + /* init XEVD_CDSC */ |
| 81 | + if (avctx->thread_count <= 0) |
| 82 | + cdsc->threads = (cpu_count < XEVD_MAX_TASK_CNT) ? cpu_count : XEVD_MAX_TASK_CNT; |
| 83 | + else if (avctx->thread_count > XEVD_MAX_TASK_CNT) |
| 84 | + cdsc->threads = XEVD_MAX_TASK_CNT; |
| 85 | + else |
| 86 | + cdsc->threads = avctx->thread_count; |
| 87 | +} |
| 88 | + |
| 89 | +/** |
| 90 | + * Read NAL unit length |
| 91 | + * @param bs input data (bitstream) |
| 92 | + * @return the length of NAL unit on success, 0 value on failure |
| 93 | + */ |
| 94 | +static uint32_t read_nal_unit_length(const uint8_t *bs, int bs_size, AVCodecContext *avctx) |
| 95 | +{ |
| 96 | + uint32_t len = 0; |
| 97 | + XEVD_INFO info; |
| 98 | + int ret; |
| 99 | + |
| 100 | + if (bs_size == XEVD_NAL_UNIT_LENGTH_BYTE) { |
| 101 | + ret = xevd_info((void *)bs, XEVD_NAL_UNIT_LENGTH_BYTE, 1, &info); |
| 102 | + if (XEVD_FAILED(ret)) { |
| 103 | + av_log(avctx, AV_LOG_ERROR, "Cannot get bitstream information\n"); |
| 104 | + return 0; |
| 105 | + } |
| 106 | + len = info.nalu_len; |
| 107 | + if (len == 0) { |
| 108 | + av_log(avctx, AV_LOG_ERROR, "Invalid bitstream size! [%d]\n", bs_size); |
| 109 | + return 0; |
| 110 | + } |
| 111 | + } |
| 112 | + |
| 113 | + return len; |
| 114 | +} |
| 115 | + |
| 116 | +/** |
| 117 | + * @param[in] xectx the structure that stores all the state associated with the instance of Xeve MPEG-5 EVC decoder |
| 118 | + * @param[out] avctx codec context |
| 119 | + * @return 0 on success, negative value on failure |
| 120 | + */ |
| 121 | +static int export_stream_params(const XevdContext *xectx, AVCodecContext *avctx) |
| 122 | +{ |
| 123 | + int ret; |
| 124 | + int size; |
| 125 | + int color_space; |
| 126 | + |
| 127 | + avctx->pix_fmt = AV_PIX_FMT_YUV420P10; |
| 128 | + |
| 129 | + size = 4; |
| 130 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_CODED_WIDTH, &avctx->coded_width, &size); |
| 131 | + if (XEVD_FAILED(ret)) { |
| 132 | + av_log(avctx, AV_LOG_ERROR, "Failed to get coded_width\n"); |
| 133 | + return AVERROR_EXTERNAL; |
| 134 | + } |
| 135 | + |
| 136 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_CODED_HEIGHT, &avctx->coded_height, &size); |
| 137 | + if (XEVD_FAILED(ret)) { |
| 138 | + av_log(avctx, AV_LOG_ERROR, "Failed to get coded_height\n"); |
| 139 | + return AVERROR_EXTERNAL; |
| 140 | + } |
| 141 | + |
| 142 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_WIDTH, &avctx->width, &size); |
| 143 | + if (XEVD_FAILED(ret)) { |
| 144 | + av_log(avctx, AV_LOG_ERROR, "Failed to get width\n"); |
| 145 | + return AVERROR_EXTERNAL; |
| 146 | + } |
| 147 | + |
| 148 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_HEIGHT, &avctx->height, &size); |
| 149 | + if (XEVD_FAILED(ret)) { |
| 150 | + av_log(avctx, AV_LOG_ERROR, "Failed to get height\n"); |
| 151 | + return AVERROR_EXTERNAL; |
| 152 | + } |
| 153 | + |
| 154 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_COLOR_SPACE, &color_space, &size); |
| 155 | + if (XEVD_FAILED(ret)) { |
| 156 | + av_log(avctx, AV_LOG_ERROR, "Failed to get color_space\n"); |
| 157 | + return AVERROR_EXTERNAL; |
| 158 | + } |
| 159 | + switch(color_space) { |
| 160 | + case XEVD_CS_YCBCR400_10LE: |
| 161 | + avctx->pix_fmt = AV_PIX_FMT_GRAY10LE; |
| 162 | + break; |
| 163 | + case XEVD_CS_YCBCR420_10LE: |
| 164 | + avctx->pix_fmt = AV_PIX_FMT_YUV420P10LE; |
| 165 | + break; |
| 166 | + case XEVD_CS_YCBCR422_10LE: |
| 167 | + avctx->pix_fmt = AV_PIX_FMT_YUV422P10LE; |
| 168 | + break; |
| 169 | + case XEVD_CS_YCBCR444_10LE: |
| 170 | + avctx->pix_fmt = AV_PIX_FMT_YUV444P10LE; |
| 171 | + break; |
| 172 | + default: |
| 173 | + av_log(avctx, AV_LOG_ERROR, "Unknown color space\n"); |
| 174 | + avctx->pix_fmt = AV_PIX_FMT_NONE; |
| 175 | + return AVERROR_INVALIDDATA; |
| 176 | + } |
| 177 | + |
| 178 | + // the function returns sps->num_reorder_pics |
| 179 | + ret = xevd_config(xectx->id, XEVD_CFG_GET_MAX_CODING_DELAY, &avctx->max_b_frames, &size); |
| 180 | + if (XEVD_FAILED(ret)) { |
| 181 | + av_log(avctx, AV_LOG_ERROR, "Failed to get max_coding_delay\n"); |
| 182 | + return AVERROR_EXTERNAL; |
| 183 | + } |
| 184 | + |
| 185 | + avctx->has_b_frames = (avctx->max_b_frames) ? 1 : 0; |
| 186 | + |
| 187 | + return 0; |
| 188 | +} |
| 189 | + |
| 190 | +/** |
| 191 | + * @brief Copy image in imgb to frame. |
| 192 | + * |
| 193 | + * @param avctx codec context |
| 194 | + * @param[in] imgb |
| 195 | + * @param[out] frame |
| 196 | + * @return 0 on success, negative value on failure |
| 197 | + */ |
| 198 | +static int libxevd_image_copy(struct AVCodecContext *avctx, XEVD_IMGB *imgb, struct AVFrame *frame) |
| 199 | +{ |
| 200 | + int ret; |
| 201 | + if (imgb->cs != XEVD_CS_YCBCR420_10LE) { |
| 202 | + av_log(avctx, AV_LOG_ERROR, "Not supported pixel format: %s\n", av_get_pix_fmt_name(avctx->pix_fmt)); |
| 203 | + return AVERROR_INVALIDDATA; |
| 204 | + } |
| 205 | + |
| 206 | + if (imgb->w[0] != avctx->width || imgb->h[0] != avctx->height) { // stream resolution changed |
| 207 | + if (ff_set_dimensions(avctx, imgb->w[0], imgb->h[0]) < 0) { |
| 208 | + av_log(avctx, AV_LOG_ERROR, "Cannot set new dimension\n"); |
| 209 | + return AVERROR_INVALIDDATA; |
| 210 | + } |
| 211 | + } |
| 212 | + |
| 213 | + if (ret = ff_get_buffer(avctx, frame, 0) < 0) |
| 214 | + return ret; |
| 215 | + |
| 216 | + av_image_copy(frame->data, frame->linesize, (const uint8_t **)imgb->a, |
| 217 | + imgb->s, avctx->pix_fmt, |
| 218 | + imgb->w[0], imgb->h[0]); |
| 219 | + |
| 220 | + return 0; |
| 221 | +} |
| 222 | + |
| 223 | +/** |
| 224 | + * Initialize decoder |
| 225 | + * Create a decoder instance and allocate all the needed resources |
| 226 | + * |
| 227 | + * @param avctx codec context |
| 228 | + * @return 0 on success, negative error code on failure |
| 229 | + */ |
| 230 | +static av_cold int libxevd_init(AVCodecContext *avctx) |
| 231 | +{ |
| 232 | + XevdContext *xectx = avctx->priv_data; |
| 233 | + XEVD_CDSC *cdsc = &(xectx->cdsc); |
| 234 | + |
| 235 | + /* read configurations and set values for created descriptor (XEVD_CDSC) */ |
| 236 | + get_conf(avctx, cdsc); |
| 237 | + |
| 238 | + /* create decoder */ |
| 239 | + xectx->id = xevd_create(&(xectx->cdsc), NULL); |
| 240 | + if (xectx->id == NULL) { |
| 241 | + av_log(avctx, AV_LOG_ERROR, "Cannot create XEVD encoder\n"); |
| 242 | + return AVERROR_EXTERNAL; |
| 243 | + } |
| 244 | + |
| 245 | + xectx->draining_mode = 0; |
| 246 | + xectx->pkt = av_packet_alloc(); |
| 247 | + if (!xectx->pkt) { |
| 248 | + av_log(avctx, AV_LOG_ERROR, "Cannot allocate memory for AVPacket\n"); |
| 249 | + return AVERROR(ENOMEM); |
| 250 | + } |
| 251 | + |
| 252 | + return 0; |
| 253 | +} |
| 254 | + |
| 255 | +/** |
| 256 | + * Decode frame with decoupled packet/frame dataflow |
| 257 | + * |
| 258 | + * @param avctx codec context |
| 259 | + * @param[out] frame decoded frame |
| 260 | + * |
| 261 | + * @return 0 on success, negative error code on failure |
| 262 | + */ |
| 263 | +static int libxevd_receive_frame(AVCodecContext *avctx, AVFrame *frame) |
| 264 | +{ |
| 265 | + XevdContext *xectx = avctx->priv_data; |
| 266 | + AVPacket *pkt = xectx->pkt; |
| 267 | + XEVD_IMGB *imgb = NULL; |
| 268 | + |
| 269 | + int xevd_ret = 0; |
| 270 | + int ret = 0; |
| 271 | + |
| 272 | + // obtain access unit (input data) - a set of NAL units that are consecutive in decoding order and containing exactly one encoded image |
| 273 | + ret = ff_decode_get_packet(avctx, pkt); |
| 274 | + if (ret < 0 && ret != AVERROR_EOF) { |
| 275 | + av_packet_unref(pkt); |
| 276 | + |
| 277 | + return ret; |
| 278 | + } else if(ret == AVERROR_EOF && xectx->draining_mode == 0) { // End of stream situations. Enter draining mode |
| 279 | + |
| 280 | + xectx->draining_mode = 1; |
| 281 | + av_packet_unref(pkt); |
| 282 | + } |
| 283 | + |
| 284 | + if (pkt->size > 0) { |
| 285 | + int bs_read_pos = 0; |
| 286 | + XEVD_STAT stat; |
| 287 | + XEVD_BITB bitb; |
| 288 | + int nalu_size; |
| 289 | + AVPacket* pkt_au; |
| 290 | + imgb = NULL; |
| 291 | + |
| 292 | + pkt_au = av_packet_clone(pkt); |
| 293 | + if (!pkt_au) { |
| 294 | + av_log(avctx, AV_LOG_ERROR, "Cannot clone AVPacket\n"); |
| 295 | + av_packet_unref(pkt); |
| 296 | + return AVERROR(ENOMEM); |
| 297 | + } |
| 298 | + |
| 299 | + av_packet_unref(pkt); |
| 300 | + |
| 301 | + // get all nal units from AU |
| 302 | + while(pkt_au->size > (bs_read_pos + XEVD_NAL_UNIT_LENGTH_BYTE)) { |
| 303 | + memset(&stat, 0, sizeof(XEVD_STAT)); |
| 304 | + |
| 305 | + nalu_size = read_nal_unit_length(pkt_au->data + bs_read_pos, XEVD_NAL_UNIT_LENGTH_BYTE, avctx); |
| 306 | + if (nalu_size == 0) { |
| 307 | + av_log(avctx, AV_LOG_ERROR, "Invalid bitstream\n"); |
| 308 | + av_packet_free(&pkt_au); |
| 309 | + ret = AVERROR_INVALIDDATA; |
| 310 | + |
| 311 | + return ret; |
| 312 | + } |
| 313 | + bs_read_pos += XEVD_NAL_UNIT_LENGTH_BYTE; |
| 314 | + |
| 315 | + bitb.addr = pkt_au->data + bs_read_pos; |
| 316 | + bitb.ssize = nalu_size; |
| 317 | + bitb.pdata[0] = pkt_au; |
| 318 | + bitb.ts[XEVD_TS_DTS] = pkt_au->dts; |
| 319 | + |
| 320 | + /* main decoding block */ |
| 321 | + xevd_ret = xevd_decode(xectx->id, &bitb, &stat); |
| 322 | + if (XEVD_FAILED(xevd_ret)) { |
| 323 | + av_log(avctx, AV_LOG_ERROR, "Failed to decode bitstream\n"); |
| 324 | + av_packet_free(&pkt_au); |
| 325 | + |
| 326 | + return AVERROR_EXTERNAL; |
| 327 | + } |
| 328 | + |
| 329 | + bs_read_pos += nalu_size; |
| 330 | + |
| 331 | + if (stat.nalu_type == XEVD_NUT_SPS) { // EVC stream parameters changed |
| 332 | + if ((ret = export_stream_params(xectx, avctx)) != 0) { |
| 333 | + av_log(avctx, AV_LOG_ERROR, "Failed to export stream params\n"); |
| 334 | + av_packet_free(&pkt_au); |
| 335 | + |
| 336 | + return ret; |
| 337 | + } |
| 338 | + } |
| 339 | + |
| 340 | + if (stat.read != nalu_size) |
| 341 | + av_log(avctx, AV_LOG_INFO, "Different reading of bitstream (in:%d, read:%d)\n,", nalu_size, stat.read); |
| 342 | + |
| 343 | + // stat.fnum - has negative value if the decoded data is not frame |
| 344 | + if (stat.fnum >= 0) { |
| 345 | + |
| 346 | + xevd_ret = xevd_pull(xectx->id, &imgb); // The function returns a valid image only if the return code is XEVD_OK |
| 347 | + |
| 348 | + if (XEVD_FAILED(xevd_ret)) { |
| 349 | + av_log(avctx, AV_LOG_ERROR, "Failed to pull the decoded image (xevd error code: %d, frame#=%d)\n", xevd_ret, stat.fnum); |
| 350 | + |
| 351 | + av_packet_free(&pkt_au); |
| 352 | + |
| 353 | + return AVERROR_EXTERNAL; |
| 354 | + } else if (xevd_ret == XEVD_OK_FRM_DELAYED) { |
| 355 | + if(bs_read_pos == pkt_au->size) { |
| 356 | + return AVERROR(EAGAIN); |
| 357 | + } |
| 358 | + } else { // XEVD_OK |
| 359 | + if (!imgb) { |
| 360 | + if(bs_read_pos == pkt_au->size) { |
| 361 | + av_log(avctx, AV_LOG_ERROR, "Invalid decoded image data\n"); |
| 362 | + |
| 363 | + av_packet_free(&pkt_au); |
| 364 | + return AVERROR(EAGAIN); |
| 365 | + } |
| 366 | + } else { |
| 367 | + // got frame |
| 368 | + AVPacket* pkt_au_imgb = (AVPacket*)imgb->pdata[0]; |
| 369 | + if(!pkt_au_imgb) { |
| 370 | + av_log(avctx, AV_LOG_ERROR, "Invalid data needed to fill frame properties\n"); |
| 371 | + |
| 372 | + av_packet_free(&pkt_au); |
| 373 | + av_frame_unref(frame); |
| 374 | + |
| 375 | + imgb->release(imgb); |
| 376 | + imgb = NULL; |
| 377 | + |
| 378 | + return AVERROR_INVALIDDATA; |
| 379 | + } |
| 380 | + |
| 381 | + ret = libxevd_image_copy(avctx, imgb, frame); |
| 382 | + if(ret < 0) { |
| 383 | + av_log(avctx, AV_LOG_ERROR, "Image copying error\n"); |
| 384 | + |
| 385 | + av_packet_free(&pkt_au_imgb); |
| 386 | + av_frame_unref(frame); |
| 387 | + |
| 388 | + imgb->release(imgb); |
| 389 | + imgb = NULL; |
| 390 | + |
| 391 | + return ret; |
| 392 | + } |
| 393 | + |
| 394 | + // use ff_decode_frame_props_from_pkt() to fill frame properties |
| 395 | + ret = ff_decode_frame_props_from_pkt(avctx, frame, pkt_au_imgb); |
| 396 | + if (ret < 0) { |
| 397 | + av_log(avctx, AV_LOG_ERROR, "ff_decode_frame_props_from_pkt error\n"); |
| 398 | + |
| 399 | + av_packet_free(&pkt_au_imgb); |
| 400 | + av_frame_unref(frame); |
| 401 | + |
| 402 | + imgb->release(imgb); |
| 403 | + imgb = NULL; |
| 404 | + |
| 405 | + return ret; |
| 406 | + } |
| 407 | + |
| 408 | + frame->pkt_dts = imgb->ts[XEVD_TS_DTS]; |
| 409 | + frame->pts = imgb->ts[XEVD_TS_PTS]; |
| 410 | + |
| 411 | + av_packet_free(&pkt_au_imgb); |
| 412 | + |
| 413 | + // xevd_pull uses pool of objects of type XEVD_IMGB. |
| 414 | + // The pool size is equal MAX_PB_SIZE (26), so release object when it is no more needed |
| 415 | + imgb->release(imgb); |
| 416 | + imgb = NULL; |
| 417 | + } |
| 418 | + } |
| 419 | + } |
| 420 | + } |
| 421 | + } else { // decoder draining mode handling |
| 422 | + |
| 423 | + xevd_ret = xevd_pull(xectx->id, &imgb); |
| 424 | + |
| 425 | + if (xevd_ret == XEVD_ERR_UNEXPECTED) { // draining process completed |
| 426 | + av_log(avctx, AV_LOG_DEBUG, "Draining process completed\n"); |
| 427 | + |
| 428 | + return AVERROR_EOF; |
| 429 | + } else if (XEVD_FAILED(xevd_ret)) { // handle all other errors |
| 430 | + av_log(avctx, AV_LOG_ERROR, "Failed to pull the decoded image (xevd error code: %d)\n", xevd_ret); |
| 431 | + |
| 432 | + return AVERROR_EXTERNAL; |
| 433 | + } else { // XEVD_OK |
| 434 | + AVPacket* pkt_au_imgb; |
| 435 | + if (!imgb) { |
| 436 | + av_log(avctx, AV_LOG_ERROR, "Invalid decoded image data\n"); |
| 437 | + |
| 438 | + return AVERROR_EXTERNAL; |
| 439 | + } |
| 440 | + |
| 441 | + pkt_au_imgb = (AVPacket*)imgb->pdata[0]; |
| 442 | + if(!pkt_au_imgb) { |
| 443 | + av_log(avctx, AV_LOG_ERROR, "Invalid data needed to fill frame properties\n"); |
| 444 | + |
| 445 | + imgb->release(imgb); |
| 446 | + imgb = NULL; |
| 447 | + |
| 448 | + av_frame_unref(frame); |
| 449 | + |
| 450 | + return AVERROR_INVALIDDATA; |
| 451 | + } |
| 452 | + |
| 453 | + // got frame |
| 454 | + ret = libxevd_image_copy(avctx, imgb, frame); |
| 455 | + if(ret < 0) { |
| 456 | + av_packet_free(&pkt_au_imgb); |
| 457 | + av_frame_unref(frame); |
| 458 | + |
| 459 | + imgb->release(imgb); |
| 460 | + imgb = NULL; |
| 461 | + |
| 462 | + return ret; |
| 463 | + } |
| 464 | + // use ff_decode_frame_props_from_pkt() to fill frame properties |
| 465 | + ret = ff_decode_frame_props_from_pkt(avctx, frame, pkt_au_imgb); |
| 466 | + if (ret < 0) { |
| 467 | + av_log(avctx, AV_LOG_ERROR, "ff_decode_frame_props_from_pkt error\n"); |
| 468 | + |
| 469 | + av_packet_free(&pkt_au_imgb); |
| 470 | + av_frame_unref(frame); |
| 471 | + |
| 472 | + imgb->release(imgb); |
| 473 | + imgb = NULL; |
| 474 | + |
| 475 | + return ret; |
| 476 | + } |
| 477 | + |
| 478 | + frame->pkt_dts = imgb->ts[XEVD_TS_DTS]; |
| 479 | + frame->pts = imgb->ts[XEVD_TS_PTS]; |
| 480 | + |
| 481 | + av_packet_free(&pkt_au_imgb); |
| 482 | + |
| 483 | + // xevd_pull uses pool of objects of type XEVD_IMGB. |
| 484 | + // The pool size is equal MAX_PB_SIZE (26), so release object when it is no more needed |
| 485 | + imgb->release(imgb); |
| 486 | + imgb = NULL; |
| 487 | + |
| 488 | + return 0; |
| 489 | + } |
| 490 | + } |
| 491 | + |
| 492 | + return ret; |
| 493 | +} |
| 494 | + |
| 495 | +/** |
| 496 | + * Destroy decoder |
| 497 | + * |
| 498 | + * @param avctx codec context |
| 499 | + * @return 0 on success |
| 500 | + */ |
| 501 | +static av_cold int libxevd_close(AVCodecContext *avctx) |
| 502 | +{ |
| 503 | + XevdContext *xectx = avctx->priv_data; |
| 504 | + if (xectx->id) { |
| 505 | + xevd_delete(xectx->id); |
| 506 | + xectx->id = NULL; |
| 507 | + } |
| 508 | + |
| 509 | + xectx->draining_mode = 0; |
| 510 | + av_packet_free(&xectx->pkt); |
| 511 | + |
| 512 | + return 0; |
| 513 | +} |
| 514 | + |
| 515 | +#define OFFSET(x) offsetof(XevdContext, x) |
| 516 | +#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM |
| 517 | + |
| 518 | +static const AVClass libxevd_class = { |
| 519 | + .class_name = "libxevd", |
| 520 | + .item_name = av_default_item_name, |
| 521 | + .version = LIBAVUTIL_VERSION_INT, |
| 522 | +}; |
| 523 | + |
| 524 | +const FFCodec ff_libxevd_decoder = { |
| 525 | + .p.name = "evc", |
| 526 | + .p.long_name = NULL_IF_CONFIG_SMALL("EVC / MPEG-5 Essential Video Coding (EVC)"), |
| 527 | + .p.type = AVMEDIA_TYPE_VIDEO, |
| 528 | + .p.id = AV_CODEC_ID_EVC, |
| 529 | + .init = libxevd_init, |
| 530 | + FF_CODEC_RECEIVE_FRAME_CB(libxevd_receive_frame), |
| 531 | + .close = libxevd_close, |
| 532 | + .priv_data_size = sizeof(XevdContext), |
| 533 | + .p.priv_class = &libxevd_class, |
| 534 | + .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_OTHER_THREADS | AV_CODEC_CAP_AVOID_PROBING, |
| 535 | + .p.profiles = NULL_IF_CONFIG_SMALL(ff_evc_profiles), |
| 536 | + .p.wrapper_name = "libxevd", |
| 537 | + .caps_internal = FF_CODEC_CAP_INIT_CLEANUP | FF_CODEC_CAP_NOT_INIT_THREADSAFE | FF_CODEC_CAP_SETS_PKT_DTS | FF_CODEC_CAP_SETS_FRAME_PROPS |
| 538 | +}; |