| 1 | /* |
| 2 | * |
| 3 | * This file is part of FFmpeg. |
| 4 | * |
| 5 | * FFmpeg is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU Lesser General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2.1 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * FFmpeg is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * Lesser General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Lesser General Public |
| 16 | * License along with FFmpeg; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | #include "channel_layout.h" |
| 21 | #include "avassert.h" |
| 22 | #include "buffer.h" |
| 23 | #include "common.h" |
| 24 | #include "dict.h" |
| 25 | #include "frame.h" |
| 26 | #include "imgutils.h" |
| 27 | #include "mem.h" |
| 28 | #include "samplefmt.h" |
| 29 | |
| 30 | MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp) |
| 31 | MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration) |
| 32 | MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos) |
| 33 | MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout) |
| 34 | MAKE_ACCESSORS(AVFrame, frame, int, channels) |
| 35 | MAKE_ACCESSORS(AVFrame, frame, int, sample_rate) |
| 36 | MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata) |
| 37 | MAKE_ACCESSORS(AVFrame, frame, int, decode_error_flags) |
| 38 | MAKE_ACCESSORS(AVFrame, frame, int, pkt_size) |
| 39 | MAKE_ACCESSORS(AVFrame, frame, enum AVColorSpace, colorspace) |
| 40 | MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range) |
| 41 | |
| 42 | #define CHECK_CHANNELS_CONSISTENCY(frame) \ |
| 43 | av_assert2(!(frame)->channel_layout || \ |
| 44 | (frame)->channels == \ |
| 45 | av_get_channel_layout_nb_channels((frame)->channel_layout)) |
| 46 | |
| 47 | AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame) {return &frame->metadata;}; |
| 48 | |
| 49 | int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type) |
| 50 | { |
| 51 | av_buffer_unref(&f->qp_table_buf); |
| 52 | |
| 53 | f->qp_table_buf = buf; |
| 54 | |
| 55 | f->qscale_table = buf->data; |
| 56 | f->qstride = stride; |
| 57 | f->qscale_type = qp_type; |
| 58 | |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type) |
| 63 | { |
| 64 | *stride = f->qstride; |
| 65 | *type = f->qscale_type; |
| 66 | |
| 67 | if (!f->qp_table_buf) |
| 68 | return NULL; |
| 69 | |
| 70 | return f->qp_table_buf->data; |
| 71 | } |
| 72 | |
| 73 | const char *av_get_colorspace_name(enum AVColorSpace val) |
| 74 | { |
| 75 | static const char * const name[] = { |
| 76 | [AVCOL_SPC_RGB] = "GBR", |
| 77 | [AVCOL_SPC_BT709] = "bt709", |
| 78 | [AVCOL_SPC_FCC] = "fcc", |
| 79 | [AVCOL_SPC_BT470BG] = "bt470bg", |
| 80 | [AVCOL_SPC_SMPTE170M] = "smpte170m", |
| 81 | [AVCOL_SPC_SMPTE240M] = "smpte240m", |
| 82 | [AVCOL_SPC_YCOCG] = "YCgCo", |
| 83 | }; |
| 84 | if ((unsigned)val >= FF_ARRAY_ELEMS(name)) |
| 85 | return NULL; |
| 86 | return name[val]; |
| 87 | } |
| 88 | |
| 89 | static void get_frame_defaults(AVFrame *frame) |
| 90 | { |
| 91 | if (frame->extended_data != frame->data) |
| 92 | av_freep(&frame->extended_data); |
| 93 | |
| 94 | memset(frame, 0, sizeof(*frame)); |
| 95 | |
| 96 | frame->pts = |
| 97 | frame->pkt_dts = |
| 98 | frame->pkt_pts = AV_NOPTS_VALUE; |
| 99 | av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE); |
| 100 | av_frame_set_pkt_duration (frame, 0); |
| 101 | av_frame_set_pkt_pos (frame, -1); |
| 102 | av_frame_set_pkt_size (frame, -1); |
| 103 | frame->key_frame = 1; |
| 104 | frame->sample_aspect_ratio = (AVRational){ 0, 1 }; |
| 105 | frame->format = -1; /* unknown */ |
| 106 | frame->extended_data = frame->data; |
| 107 | frame->color_primaries = AVCOL_PRI_UNSPECIFIED; |
| 108 | frame->color_trc = AVCOL_TRC_UNSPECIFIED; |
| 109 | frame->colorspace = AVCOL_SPC_UNSPECIFIED; |
| 110 | frame->color_range = AVCOL_RANGE_UNSPECIFIED; |
| 111 | frame->chroma_location = AVCHROMA_LOC_UNSPECIFIED; |
| 112 | } |
| 113 | |
| 114 | static void free_side_data(AVFrameSideData **ptr_sd) |
| 115 | { |
| 116 | AVFrameSideData *sd = *ptr_sd; |
| 117 | |
| 118 | av_freep(&sd->data); |
| 119 | av_dict_free(&sd->metadata); |
| 120 | av_freep(ptr_sd); |
| 121 | } |
| 122 | |
| 123 | AVFrame *av_frame_alloc(void) |
| 124 | { |
| 125 | AVFrame *frame = av_mallocz(sizeof(*frame)); |
| 126 | |
| 127 | if (!frame) |
| 128 | return NULL; |
| 129 | |
| 130 | frame->extended_data = NULL; |
| 131 | get_frame_defaults(frame); |
| 132 | |
| 133 | return frame; |
| 134 | } |
| 135 | |
| 136 | void av_frame_free(AVFrame **frame) |
| 137 | { |
| 138 | if (!frame || !*frame) |
| 139 | return; |
| 140 | |
| 141 | av_frame_unref(*frame); |
| 142 | av_freep(frame); |
| 143 | } |
| 144 | |
| 145 | static int get_video_buffer(AVFrame *frame, int align) |
| 146 | { |
| 147 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); |
| 148 | int ret, i; |
| 149 | |
| 150 | if (!desc) |
| 151 | return AVERROR(EINVAL); |
| 152 | |
| 153 | if ((ret = av_image_check_size(frame->width, frame->height, 0, NULL)) < 0) |
| 154 | return ret; |
| 155 | |
| 156 | if (!frame->linesize[0]) { |
| 157 | for(i=1; i<=align; i+=i) { |
| 158 | ret = av_image_fill_linesizes(frame->linesize, frame->format, |
| 159 | FFALIGN(frame->width, i)); |
| 160 | if (ret < 0) |
| 161 | return ret; |
| 162 | if (!(frame->linesize[0] & (align-1))) |
| 163 | break; |
| 164 | } |
| 165 | |
| 166 | for (i = 0; i < 4 && frame->linesize[i]; i++) |
| 167 | frame->linesize[i] = FFALIGN(frame->linesize[i], align); |
| 168 | } |
| 169 | |
| 170 | for (i = 0; i < 4 && frame->linesize[i]; i++) { |
| 171 | int h = FFALIGN(frame->height, 32); |
| 172 | if (i == 1 || i == 2) |
| 173 | h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h); |
| 174 | |
| 175 | frame->buf[i] = av_buffer_alloc(frame->linesize[i] * h + 16 + 16/*STRIDE_ALIGN*/ - 1); |
| 176 | if (!frame->buf[i]) |
| 177 | goto fail; |
| 178 | |
| 179 | frame->data[i] = frame->buf[i]->data; |
| 180 | } |
| 181 | if (desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) { |
| 182 | av_buffer_unref(&frame->buf[1]); |
| 183 | frame->buf[1] = av_buffer_alloc(1024); |
| 184 | if (!frame->buf[1]) |
| 185 | goto fail; |
| 186 | frame->data[1] = frame->buf[1]->data; |
| 187 | } |
| 188 | |
| 189 | frame->extended_data = frame->data; |
| 190 | |
| 191 | return 0; |
| 192 | fail: |
| 193 | av_frame_unref(frame); |
| 194 | return AVERROR(ENOMEM); |
| 195 | } |
| 196 | |
| 197 | static int get_audio_buffer(AVFrame *frame, int align) |
| 198 | { |
| 199 | int channels; |
| 200 | int planar = av_sample_fmt_is_planar(frame->format); |
| 201 | int planes; |
| 202 | int ret, i; |
| 203 | |
| 204 | if (!frame->channels) |
| 205 | frame->channels = av_get_channel_layout_nb_channels(frame->channel_layout); |
| 206 | |
| 207 | channels = frame->channels; |
| 208 | planes = planar ? channels : 1; |
| 209 | |
| 210 | CHECK_CHANNELS_CONSISTENCY(frame); |
| 211 | if (!frame->linesize[0]) { |
| 212 | ret = av_samples_get_buffer_size(&frame->linesize[0], channels, |
| 213 | frame->nb_samples, frame->format, |
| 214 | align); |
| 215 | if (ret < 0) |
| 216 | return ret; |
| 217 | } |
| 218 | |
| 219 | if (planes > AV_NUM_DATA_POINTERS) { |
| 220 | frame->extended_data = av_mallocz_array(planes, |
| 221 | sizeof(*frame->extended_data)); |
| 222 | frame->extended_buf = av_mallocz_array((planes - AV_NUM_DATA_POINTERS), |
| 223 | sizeof(*frame->extended_buf)); |
| 224 | if (!frame->extended_data || !frame->extended_buf) { |
| 225 | av_freep(&frame->extended_data); |
| 226 | av_freep(&frame->extended_buf); |
| 227 | return AVERROR(ENOMEM); |
| 228 | } |
| 229 | frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS; |
| 230 | } else |
| 231 | frame->extended_data = frame->data; |
| 232 | |
| 233 | for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) { |
| 234 | frame->buf[i] = av_buffer_alloc(frame->linesize[0]); |
| 235 | if (!frame->buf[i]) { |
| 236 | av_frame_unref(frame); |
| 237 | return AVERROR(ENOMEM); |
| 238 | } |
| 239 | frame->extended_data[i] = frame->data[i] = frame->buf[i]->data; |
| 240 | } |
| 241 | for (i = 0; i < planes - AV_NUM_DATA_POINTERS; i++) { |
| 242 | frame->extended_buf[i] = av_buffer_alloc(frame->linesize[0]); |
| 243 | if (!frame->extended_buf[i]) { |
| 244 | av_frame_unref(frame); |
| 245 | return AVERROR(ENOMEM); |
| 246 | } |
| 247 | frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data; |
| 248 | } |
| 249 | return 0; |
| 250 | |
| 251 | } |
| 252 | |
| 253 | int av_frame_get_buffer(AVFrame *frame, int align) |
| 254 | { |
| 255 | if (frame->format < 0) |
| 256 | return AVERROR(EINVAL); |
| 257 | |
| 258 | if (frame->width > 0 && frame->height > 0) |
| 259 | return get_video_buffer(frame, align); |
| 260 | else if (frame->nb_samples > 0 && (frame->channel_layout || frame->channels > 0)) |
| 261 | return get_audio_buffer(frame, align); |
| 262 | |
| 263 | return AVERROR(EINVAL); |
| 264 | } |
| 265 | |
| 266 | int av_frame_ref(AVFrame *dst, const AVFrame *src) |
| 267 | { |
| 268 | int i, ret = 0; |
| 269 | |
| 270 | dst->format = src->format; |
| 271 | dst->width = src->width; |
| 272 | dst->height = src->height; |
| 273 | dst->channels = src->channels; |
| 274 | dst->channel_layout = src->channel_layout; |
| 275 | dst->nb_samples = src->nb_samples; |
| 276 | |
| 277 | ret = av_frame_copy_props(dst, src); |
| 278 | if (ret < 0) |
| 279 | return ret; |
| 280 | |
| 281 | /* duplicate the frame data if it's not refcounted */ |
| 282 | if (!src->buf[0]) { |
| 283 | ret = av_frame_get_buffer(dst, 32); |
| 284 | if (ret < 0) |
| 285 | return ret; |
| 286 | |
| 287 | ret = av_frame_copy(dst, src); |
| 288 | if (ret < 0) |
| 289 | av_frame_unref(dst); |
| 290 | |
| 291 | return ret; |
| 292 | } |
| 293 | |
| 294 | /* ref the buffers */ |
| 295 | for (i = 0; i < FF_ARRAY_ELEMS(src->buf); i++) { |
| 296 | if (!src->buf[i]) |
| 297 | continue; |
| 298 | dst->buf[i] = av_buffer_ref(src->buf[i]); |
| 299 | if (!dst->buf[i]) { |
| 300 | ret = AVERROR(ENOMEM); |
| 301 | goto fail; |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | if (src->extended_buf) { |
| 306 | dst->extended_buf = av_mallocz_array(sizeof(*dst->extended_buf), |
| 307 | src->nb_extended_buf); |
| 308 | if (!dst->extended_buf) { |
| 309 | ret = AVERROR(ENOMEM); |
| 310 | goto fail; |
| 311 | } |
| 312 | dst->nb_extended_buf = src->nb_extended_buf; |
| 313 | |
| 314 | for (i = 0; i < src->nb_extended_buf; i++) { |
| 315 | dst->extended_buf[i] = av_buffer_ref(src->extended_buf[i]); |
| 316 | if (!dst->extended_buf[i]) { |
| 317 | ret = AVERROR(ENOMEM); |
| 318 | goto fail; |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | /* duplicate extended data */ |
| 324 | if (src->extended_data != src->data) { |
| 325 | int ch = src->channels; |
| 326 | |
| 327 | if (!ch) { |
| 328 | ret = AVERROR(EINVAL); |
| 329 | goto fail; |
| 330 | } |
| 331 | CHECK_CHANNELS_CONSISTENCY(src); |
| 332 | |
| 333 | dst->extended_data = av_malloc_array(sizeof(*dst->extended_data), ch); |
| 334 | if (!dst->extended_data) { |
| 335 | ret = AVERROR(ENOMEM); |
| 336 | goto fail; |
| 337 | } |
| 338 | memcpy(dst->extended_data, src->extended_data, sizeof(*src->extended_data) * ch); |
| 339 | } else |
| 340 | dst->extended_data = dst->data; |
| 341 | |
| 342 | memcpy(dst->data, src->data, sizeof(src->data)); |
| 343 | memcpy(dst->linesize, src->linesize, sizeof(src->linesize)); |
| 344 | |
| 345 | return 0; |
| 346 | |
| 347 | fail: |
| 348 | av_frame_unref(dst); |
| 349 | return ret; |
| 350 | } |
| 351 | |
| 352 | AVFrame *av_frame_clone(const AVFrame *src) |
| 353 | { |
| 354 | AVFrame *ret = av_frame_alloc(); |
| 355 | |
| 356 | if (!ret) |
| 357 | return NULL; |
| 358 | |
| 359 | if (av_frame_ref(ret, src) < 0) |
| 360 | av_frame_free(&ret); |
| 361 | |
| 362 | return ret; |
| 363 | } |
| 364 | |
| 365 | void av_frame_unref(AVFrame *frame) |
| 366 | { |
| 367 | int i; |
| 368 | |
| 369 | for (i = 0; i < frame->nb_side_data; i++) { |
| 370 | free_side_data(&frame->side_data[i]); |
| 371 | } |
| 372 | av_freep(&frame->side_data); |
| 373 | |
| 374 | for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) |
| 375 | av_buffer_unref(&frame->buf[i]); |
| 376 | for (i = 0; i < frame->nb_extended_buf; i++) |
| 377 | av_buffer_unref(&frame->extended_buf[i]); |
| 378 | av_freep(&frame->extended_buf); |
| 379 | av_dict_free(&frame->metadata); |
| 380 | av_buffer_unref(&frame->qp_table_buf); |
| 381 | |
| 382 | get_frame_defaults(frame); |
| 383 | } |
| 384 | |
| 385 | void av_frame_move_ref(AVFrame *dst, AVFrame *src) |
| 386 | { |
| 387 | *dst = *src; |
| 388 | if (src->extended_data == src->data) |
| 389 | dst->extended_data = dst->data; |
| 390 | memset(src, 0, sizeof(*src)); |
| 391 | get_frame_defaults(src); |
| 392 | } |
| 393 | |
| 394 | int av_frame_is_writable(AVFrame *frame) |
| 395 | { |
| 396 | int i, ret = 1; |
| 397 | |
| 398 | /* assume non-refcounted frames are not writable */ |
| 399 | if (!frame->buf[0]) |
| 400 | return 0; |
| 401 | |
| 402 | for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) |
| 403 | if (frame->buf[i]) |
| 404 | ret &= !!av_buffer_is_writable(frame->buf[i]); |
| 405 | for (i = 0; i < frame->nb_extended_buf; i++) |
| 406 | ret &= !!av_buffer_is_writable(frame->extended_buf[i]); |
| 407 | |
| 408 | return ret; |
| 409 | } |
| 410 | |
| 411 | int av_frame_make_writable(AVFrame *frame) |
| 412 | { |
| 413 | AVFrame tmp; |
| 414 | int ret; |
| 415 | |
| 416 | if (!frame->buf[0]) |
| 417 | return AVERROR(EINVAL); |
| 418 | |
| 419 | if (av_frame_is_writable(frame)) |
| 420 | return 0; |
| 421 | |
| 422 | memset(&tmp, 0, sizeof(tmp)); |
| 423 | tmp.format = frame->format; |
| 424 | tmp.width = frame->width; |
| 425 | tmp.height = frame->height; |
| 426 | tmp.channels = frame->channels; |
| 427 | tmp.channel_layout = frame->channel_layout; |
| 428 | tmp.nb_samples = frame->nb_samples; |
| 429 | ret = av_frame_get_buffer(&tmp, 32); |
| 430 | if (ret < 0) |
| 431 | return ret; |
| 432 | |
| 433 | ret = av_frame_copy(&tmp, frame); |
| 434 | if (ret < 0) { |
| 435 | av_frame_unref(&tmp); |
| 436 | return ret; |
| 437 | } |
| 438 | |
| 439 | ret = av_frame_copy_props(&tmp, frame); |
| 440 | if (ret < 0) { |
| 441 | av_frame_unref(&tmp); |
| 442 | return ret; |
| 443 | } |
| 444 | |
| 445 | av_frame_unref(frame); |
| 446 | |
| 447 | *frame = tmp; |
| 448 | if (tmp.data == tmp.extended_data) |
| 449 | frame->extended_data = frame->data; |
| 450 | |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | int av_frame_copy_props(AVFrame *dst, const AVFrame *src) |
| 455 | { |
| 456 | int i; |
| 457 | |
| 458 | dst->key_frame = src->key_frame; |
| 459 | dst->pict_type = src->pict_type; |
| 460 | dst->sample_aspect_ratio = src->sample_aspect_ratio; |
| 461 | dst->pts = src->pts; |
| 462 | dst->repeat_pict = src->repeat_pict; |
| 463 | dst->interlaced_frame = src->interlaced_frame; |
| 464 | dst->top_field_first = src->top_field_first; |
| 465 | dst->palette_has_changed = src->palette_has_changed; |
| 466 | dst->sample_rate = src->sample_rate; |
| 467 | dst->opaque = src->opaque; |
| 468 | #if FF_API_AVFRAME_LAVC |
| 469 | dst->type = src->type; |
| 470 | #endif |
| 471 | dst->pkt_pts = src->pkt_pts; |
| 472 | dst->pkt_dts = src->pkt_dts; |
| 473 | dst->pkt_pos = src->pkt_pos; |
| 474 | dst->pkt_size = src->pkt_size; |
| 475 | dst->pkt_duration = src->pkt_duration; |
| 476 | dst->reordered_opaque = src->reordered_opaque; |
| 477 | dst->quality = src->quality; |
| 478 | dst->best_effort_timestamp = src->best_effort_timestamp; |
| 479 | dst->coded_picture_number = src->coded_picture_number; |
| 480 | dst->display_picture_number = src->display_picture_number; |
| 481 | dst->flags = src->flags; |
| 482 | dst->decode_error_flags = src->decode_error_flags; |
| 483 | dst->color_primaries = src->color_primaries; |
| 484 | dst->color_trc = src->color_trc; |
| 485 | dst->colorspace = src->colorspace; |
| 486 | dst->color_range = src->color_range; |
| 487 | dst->chroma_location = src->chroma_location; |
| 488 | |
| 489 | av_dict_copy(&dst->metadata, src->metadata, 0); |
| 490 | |
| 491 | memcpy(dst->error, src->error, sizeof(dst->error)); |
| 492 | |
| 493 | for (i = 0; i < src->nb_side_data; i++) { |
| 494 | const AVFrameSideData *sd_src = src->side_data[i]; |
| 495 | AVFrameSideData *sd_dst; |
| 496 | if ( sd_src->type == AV_FRAME_DATA_PANSCAN |
| 497 | && (src->width != dst->width || src->height != dst->height)) |
| 498 | continue; |
| 499 | sd_dst = av_frame_new_side_data(dst, sd_src->type, |
| 500 | sd_src->size); |
| 501 | if (!sd_dst) { |
| 502 | for (i = 0; i < dst->nb_side_data; i++) { |
| 503 | free_side_data(&dst->side_data[i]); |
| 504 | } |
| 505 | av_freep(&dst->side_data); |
| 506 | return AVERROR(ENOMEM); |
| 507 | } |
| 508 | memcpy(sd_dst->data, sd_src->data, sd_src->size); |
| 509 | av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0); |
| 510 | } |
| 511 | |
| 512 | dst->qscale_table = NULL; |
| 513 | dst->qstride = 0; |
| 514 | dst->qscale_type = 0; |
| 515 | if (src->qp_table_buf) { |
| 516 | dst->qp_table_buf = av_buffer_ref(src->qp_table_buf); |
| 517 | if (dst->qp_table_buf) { |
| 518 | dst->qscale_table = dst->qp_table_buf->data; |
| 519 | dst->qstride = src->qstride; |
| 520 | dst->qscale_type = src->qscale_type; |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | return 0; |
| 525 | } |
| 526 | |
| 527 | AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane) |
| 528 | { |
| 529 | uint8_t *data; |
| 530 | int planes, i; |
| 531 | |
| 532 | if (frame->nb_samples) { |
| 533 | int channels = frame->channels; |
| 534 | if (!channels) |
| 535 | return NULL; |
| 536 | CHECK_CHANNELS_CONSISTENCY(frame); |
| 537 | planes = av_sample_fmt_is_planar(frame->format) ? channels : 1; |
| 538 | } else |
| 539 | planes = 4; |
| 540 | |
| 541 | if (plane < 0 || plane >= planes || !frame->extended_data[plane]) |
| 542 | return NULL; |
| 543 | data = frame->extended_data[plane]; |
| 544 | |
| 545 | for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) { |
| 546 | AVBufferRef *buf = frame->buf[i]; |
| 547 | if (data >= buf->data && data < buf->data + buf->size) |
| 548 | return buf; |
| 549 | } |
| 550 | for (i = 0; i < frame->nb_extended_buf; i++) { |
| 551 | AVBufferRef *buf = frame->extended_buf[i]; |
| 552 | if (data >= buf->data && data < buf->data + buf->size) |
| 553 | return buf; |
| 554 | } |
| 555 | return NULL; |
| 556 | } |
| 557 | |
| 558 | AVFrameSideData *av_frame_new_side_data(AVFrame *frame, |
| 559 | enum AVFrameSideDataType type, |
| 560 | int size) |
| 561 | { |
| 562 | AVFrameSideData *ret, **tmp; |
| 563 | |
| 564 | if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1) |
| 565 | return NULL; |
| 566 | |
| 567 | tmp = av_realloc(frame->side_data, |
| 568 | (frame->nb_side_data + 1) * sizeof(*frame->side_data)); |
| 569 | if (!tmp) |
| 570 | return NULL; |
| 571 | frame->side_data = tmp; |
| 572 | |
| 573 | ret = av_mallocz(sizeof(*ret)); |
| 574 | if (!ret) |
| 575 | return NULL; |
| 576 | |
| 577 | ret->data = av_malloc(size); |
| 578 | if (!ret->data) { |
| 579 | av_freep(&ret); |
| 580 | return NULL; |
| 581 | } |
| 582 | |
| 583 | ret->size = size; |
| 584 | ret->type = type; |
| 585 | |
| 586 | frame->side_data[frame->nb_side_data++] = ret; |
| 587 | |
| 588 | return ret; |
| 589 | } |
| 590 | |
| 591 | AVFrameSideData *av_frame_get_side_data(const AVFrame *frame, |
| 592 | enum AVFrameSideDataType type) |
| 593 | { |
| 594 | int i; |
| 595 | |
| 596 | for (i = 0; i < frame->nb_side_data; i++) { |
| 597 | if (frame->side_data[i]->type == type) |
| 598 | return frame->side_data[i]; |
| 599 | } |
| 600 | return NULL; |
| 601 | } |
| 602 | |
| 603 | static int frame_copy_video(AVFrame *dst, const AVFrame *src) |
| 604 | { |
| 605 | const uint8_t *src_data[4]; |
| 606 | int i, planes; |
| 607 | |
| 608 | if (dst->width < src->width || |
| 609 | dst->height < src->height) |
| 610 | return AVERROR(EINVAL); |
| 611 | |
| 612 | planes = av_pix_fmt_count_planes(dst->format); |
| 613 | for (i = 0; i < planes; i++) |
| 614 | if (!dst->data[i] || !src->data[i]) |
| 615 | return AVERROR(EINVAL); |
| 616 | |
| 617 | memcpy(src_data, src->data, sizeof(src_data)); |
| 618 | av_image_copy(dst->data, dst->linesize, |
| 619 | src_data, src->linesize, |
| 620 | dst->format, src->width, src->height); |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | static int frame_copy_audio(AVFrame *dst, const AVFrame *src) |
| 626 | { |
| 627 | int planar = av_sample_fmt_is_planar(dst->format); |
| 628 | int channels = dst->channels; |
| 629 | int planes = planar ? channels : 1; |
| 630 | int i; |
| 631 | |
| 632 | if (dst->nb_samples != src->nb_samples || |
| 633 | dst->channels != src->channels || |
| 634 | dst->channel_layout != src->channel_layout) |
| 635 | return AVERROR(EINVAL); |
| 636 | |
| 637 | CHECK_CHANNELS_CONSISTENCY(src); |
| 638 | |
| 639 | for (i = 0; i < planes; i++) |
| 640 | if (!dst->extended_data[i] || !src->extended_data[i]) |
| 641 | return AVERROR(EINVAL); |
| 642 | |
| 643 | av_samples_copy(dst->extended_data, src->extended_data, 0, 0, |
| 644 | dst->nb_samples, channels, dst->format); |
| 645 | |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | int av_frame_copy(AVFrame *dst, const AVFrame *src) |
| 650 | { |
| 651 | if (dst->format != src->format || dst->format < 0) |
| 652 | return AVERROR(EINVAL); |
| 653 | |
| 654 | if (dst->width > 0 && dst->height > 0) |
| 655 | return frame_copy_video(dst, src); |
| 656 | else if (dst->nb_samples > 0 && dst->channel_layout) |
| 657 | return frame_copy_audio(dst, src); |
| 658 | |
| 659 | return AVERROR(EINVAL); |
| 660 | } |
| 661 | |
| 662 | void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type) |
| 663 | { |
| 664 | int i; |
| 665 | |
| 666 | for (i = 0; i < frame->nb_side_data; i++) { |
| 667 | AVFrameSideData *sd = frame->side_data[i]; |
| 668 | if (sd->type == type) { |
| 669 | free_side_data(&frame->side_data[i]); |
| 670 | frame->side_data[i] = frame->side_data[frame->nb_side_data - 1]; |
| 671 | frame->nb_side_data--; |
| 672 | } |
| 673 | } |
| 674 | } |
| 675 | |
| 676 | const char *av_frame_side_data_name(enum AVFrameSideDataType type) |
| 677 | { |
| 678 | switch(type) { |
| 679 | case AV_FRAME_DATA_PANSCAN: return "AVPanScan"; |
| 680 | case AV_FRAME_DATA_A53_CC: return "ATSC A53 Part 4 Closed Captions"; |
| 681 | case AV_FRAME_DATA_STEREO3D: return "Stereoscopic 3d metadata"; |
| 682 | case AV_FRAME_DATA_MATRIXENCODING: return "AVMatrixEncoding"; |
| 683 | case AV_FRAME_DATA_DOWNMIX_INFO: return "Metadata relevant to a downmix procedure"; |
| 684 | case AV_FRAME_DATA_REPLAYGAIN: return "AVReplayGain"; |
| 685 | case AV_FRAME_DATA_DISPLAYMATRIX: return "3x3 displaymatrix"; |
| 686 | case AV_FRAME_DATA_MOTION_VECTORS: return "Motion vectors"; |
| 687 | } |
| 688 | return NULL; |
| 689 | } |