frame.c 20.8 KB
Newer Older
1 2
/*
 *
3
 * This file is part of FFmpeg.
4
 *
5
 * FFmpeg is free software; you can redistribute it and/or
6 7 8 9
 * 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.
 *
10
 * FFmpeg is distributed in the hope that it will be useful,
11 12 13 14 15
 * 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
16
 * License along with FFmpeg; if not, write to the Free Software
17 18 19
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

20
#include "channel_layout.h"
21
#include "avassert.h"
22 23
#include "buffer.h"
#include "common.h"
Anton Khirnov's avatar
Anton Khirnov committed
24
#include "dict.h"
25 26 27 28 29
#include "frame.h"
#include "imgutils.h"
#include "mem.h"
#include "samplefmt.h"

30 31 32 33 34 35 36 37 38
MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
MAKE_ACCESSORS(AVFrame, frame, int,     channels)
MAKE_ACCESSORS(AVFrame, frame, int,     sample_rate)
MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
MAKE_ACCESSORS(AVFrame, frame, int,     decode_error_flags)
MAKE_ACCESSORS(AVFrame, frame, int,     pkt_size)
39 40
MAKE_ACCESSORS(AVFrame, frame, enum AVColorSpace, colorspace)
MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range)
41

42 43 44 45 46
#define CHECK_CHANNELS_CONSISTENCY(frame) \
    av_assert2(!(frame)->channel_layout || \
               (frame)->channels == \
               av_get_channel_layout_nb_channels((frame)->channel_layout))

47 48
AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame) {return &frame->metadata;};

49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72
int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type)
{
    av_buffer_unref(&f->qp_table_buf);

    f->qp_table_buf = buf;

    f->qscale_table = buf->data;
    f->qstride      = stride;
    f->qscale_type  = qp_type;

    return 0;
}

int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type)
{
    *stride = f->qstride;
    *type   = f->qscale_type;

    if (!f->qp_table_buf)
        return NULL;

    return f->qp_table_buf->data;
}

73 74
const char *av_get_colorspace_name(enum AVColorSpace val)
{
75
    static const char * const name[] = {
76 77 78 79 80 81 82 83
        [AVCOL_SPC_RGB]       = "GBR",
        [AVCOL_SPC_BT709]     = "bt709",
        [AVCOL_SPC_FCC]       = "fcc",
        [AVCOL_SPC_BT470BG]   = "bt470bg",
        [AVCOL_SPC_SMPTE170M] = "smpte170m",
        [AVCOL_SPC_SMPTE240M] = "smpte240m",
        [AVCOL_SPC_YCOCG]     = "YCgCo",
    };
84
    if ((unsigned)val >= FF_ARRAY_ELEMS(name))
85 86 87 88
        return NULL;
    return name[val];
}

89 90 91 92 93 94 95
static void get_frame_defaults(AVFrame *frame)
{
    if (frame->extended_data != frame->data)
        av_freep(&frame->extended_data);

    memset(frame, 0, sizeof(*frame));

96 97 98 99 100 101 102
    frame->pts                   =
    frame->pkt_dts               =
    frame->pkt_pts               = AV_NOPTS_VALUE;
    av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE);
    av_frame_set_pkt_duration         (frame, 0);
    av_frame_set_pkt_pos              (frame, -1);
    av_frame_set_pkt_size             (frame, -1);
103 104 105 106
    frame->key_frame           = 1;
    frame->sample_aspect_ratio = (AVRational){ 0, 1 };
    frame->format              = -1; /* unknown */
    frame->extended_data       = frame->data;
107 108 109 110 111
    frame->color_primaries     = AVCOL_PRI_UNSPECIFIED;
    frame->color_trc           = AVCOL_TRC_UNSPECIFIED;
    frame->colorspace          = AVCOL_SPC_UNSPECIFIED;
    frame->color_range         = AVCOL_RANGE_UNSPECIFIED;
    frame->chroma_location     = AVCHROMA_LOC_UNSPECIFIED;
112 113
}

114 115 116 117
static void free_side_data(AVFrameSideData **ptr_sd)
{
    AVFrameSideData *sd = *ptr_sd;

118
    av_buffer_unref(&sd->buf);
119 120 121 122
    av_dict_free(&sd->metadata);
    av_freep(ptr_sd);
}

123 124 125 126 127 128 129 130 131 132 133 134
static void wipe_side_data(AVFrame *frame)
{
    int i;

    for (i = 0; i < frame->nb_side_data; i++) {
        free_side_data(&frame->side_data[i]);
    }
    frame->nb_side_data = 0;

    av_freep(&frame->side_data);
}

135 136 137 138 139 140 141
AVFrame *av_frame_alloc(void)
{
    AVFrame *frame = av_mallocz(sizeof(*frame));

    if (!frame)
        return NULL;

142
    frame->extended_data = NULL;
143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
    get_frame_defaults(frame);

    return frame;
}

void av_frame_free(AVFrame **frame)
{
    if (!frame || !*frame)
        return;

    av_frame_unref(*frame);
    av_freep(frame);
}

static int get_video_buffer(AVFrame *frame, int align)
{
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
    int ret, i;

    if (!desc)
        return AVERROR(EINVAL);

    if ((ret = av_image_check_size(frame->width, frame->height, 0, NULL)) < 0)
        return ret;

    if (!frame->linesize[0]) {
169 170 171 172 173 174 175 176
        for(i=1; i<=align; i+=i) {
            ret = av_image_fill_linesizes(frame->linesize, frame->format,
                                          FFALIGN(frame->width, i));
            if (ret < 0)
                return ret;
            if (!(frame->linesize[0] & (align-1)))
                break;
        }
177 178 179 180 181 182

        for (i = 0; i < 4 && frame->linesize[i]; i++)
            frame->linesize[i] = FFALIGN(frame->linesize[i], align);
    }

    for (i = 0; i < 4 && frame->linesize[i]; i++) {
183
        int h = FFALIGN(frame->height, 32);
184
        if (i == 1 || i == 2)
185
            h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h);
186

187
        frame->buf[i] = av_buffer_alloc(frame->linesize[i] * h + 16 + 16/*STRIDE_ALIGN*/ - 1);
188 189 190 191 192
        if (!frame->buf[i])
            goto fail;

        frame->data[i] = frame->buf[i]->data;
    }
193
    if (desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210
        av_buffer_unref(&frame->buf[1]);
        frame->buf[1] = av_buffer_alloc(1024);
        if (!frame->buf[1])
            goto fail;
        frame->data[1] = frame->buf[1]->data;
    }

    frame->extended_data = frame->data;

    return 0;
fail:
    av_frame_unref(frame);
    return AVERROR(ENOMEM);
}

static int get_audio_buffer(AVFrame *frame, int align)
{
211
    int channels;
212
    int planar   = av_sample_fmt_is_planar(frame->format);
213
    int planes;
214 215
    int ret, i;

216 217 218 219 220 221
    if (!frame->channels)
        frame->channels = av_get_channel_layout_nb_channels(frame->channel_layout);

    channels = frame->channels;
    planes = planar ? channels : 1;

222
    CHECK_CHANNELS_CONSISTENCY(frame);
223 224 225 226 227 228 229 230 231
    if (!frame->linesize[0]) {
        ret = av_samples_get_buffer_size(&frame->linesize[0], channels,
                                         frame->nb_samples, frame->format,
                                         align);
        if (ret < 0)
            return ret;
    }

    if (planes > AV_NUM_DATA_POINTERS) {
232
        frame->extended_data = av_mallocz_array(planes,
233
                                          sizeof(*frame->extended_data));
234
        frame->extended_buf  = av_mallocz_array((planes - AV_NUM_DATA_POINTERS),
235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271
                                          sizeof(*frame->extended_buf));
        if (!frame->extended_data || !frame->extended_buf) {
            av_freep(&frame->extended_data);
            av_freep(&frame->extended_buf);
            return AVERROR(ENOMEM);
        }
        frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
    } else
        frame->extended_data = frame->data;

    for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
        frame->buf[i] = av_buffer_alloc(frame->linesize[0]);
        if (!frame->buf[i]) {
            av_frame_unref(frame);
            return AVERROR(ENOMEM);
        }
        frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
    }
    for (i = 0; i < planes - AV_NUM_DATA_POINTERS; i++) {
        frame->extended_buf[i] = av_buffer_alloc(frame->linesize[0]);
        if (!frame->extended_buf[i]) {
            av_frame_unref(frame);
            return AVERROR(ENOMEM);
        }
        frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
    }
    return 0;

}

int av_frame_get_buffer(AVFrame *frame, int align)
{
    if (frame->format < 0)
        return AVERROR(EINVAL);

    if (frame->width > 0 && frame->height > 0)
        return get_video_buffer(frame, align);
272
    else if (frame->nb_samples > 0 && (frame->channel_layout || frame->channels > 0))
273 274 275 276 277
        return get_audio_buffer(frame, align);

    return AVERROR(EINVAL);
}

278
static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322
{
    int i;

    dst->key_frame              = src->key_frame;
    dst->pict_type              = src->pict_type;
    dst->sample_aspect_ratio    = src->sample_aspect_ratio;
    dst->pts                    = src->pts;
    dst->repeat_pict            = src->repeat_pict;
    dst->interlaced_frame       = src->interlaced_frame;
    dst->top_field_first        = src->top_field_first;
    dst->palette_has_changed    = src->palette_has_changed;
    dst->sample_rate            = src->sample_rate;
    dst->opaque                 = src->opaque;
#if FF_API_AVFRAME_LAVC
    dst->type                   = src->type;
#endif
    dst->pkt_pts                = src->pkt_pts;
    dst->pkt_dts                = src->pkt_dts;
    dst->pkt_pos                = src->pkt_pos;
    dst->pkt_size               = src->pkt_size;
    dst->pkt_duration           = src->pkt_duration;
    dst->reordered_opaque       = src->reordered_opaque;
    dst->quality                = src->quality;
    dst->best_effort_timestamp  = src->best_effort_timestamp;
    dst->coded_picture_number   = src->coded_picture_number;
    dst->display_picture_number = src->display_picture_number;
    dst->flags                  = src->flags;
    dst->decode_error_flags     = src->decode_error_flags;
    dst->color_primaries        = src->color_primaries;
    dst->color_trc              = src->color_trc;
    dst->colorspace             = src->colorspace;
    dst->color_range            = src->color_range;
    dst->chroma_location        = src->chroma_location;

    av_dict_copy(&dst->metadata, src->metadata, 0);

    memcpy(dst->error, src->error, sizeof(dst->error));

    for (i = 0; i < src->nb_side_data; i++) {
        const AVFrameSideData *sd_src = src->side_data[i];
        AVFrameSideData *sd_dst;
        if (   sd_src->type == AV_FRAME_DATA_PANSCAN
            && (src->width != dst->width || src->height != dst->height))
            continue;
323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343
        if (force_copy) {
            sd_dst = av_frame_new_side_data(dst, sd_src->type,
                                            sd_src->size);
            if (!sd_dst) {
                wipe_side_data(dst);
                return AVERROR(ENOMEM);
            }
            memcpy(sd_dst->data, sd_src->data, sd_src->size);
        } else {
            sd_dst = av_frame_new_side_data(dst, sd_src->type, 0);
            if (!sd_dst) {
                wipe_side_data(dst);
                return AVERROR(ENOMEM);
            }
            sd_dst->buf = av_buffer_ref(sd_src->buf);
            if (!sd_dst->buf) {
                wipe_side_data(dst);
                return AVERROR(ENOMEM);
            }
            sd_dst->data = sd_dst->buf->data;
            sd_dst->size = sd_dst->buf->size;
344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362
        }
        av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0);
    }

    dst->qscale_table = NULL;
    dst->qstride      = 0;
    dst->qscale_type  = 0;
    if (src->qp_table_buf) {
        dst->qp_table_buf = av_buffer_ref(src->qp_table_buf);
        if (dst->qp_table_buf) {
            dst->qscale_table = dst->qp_table_buf->data;
            dst->qstride      = src->qstride;
            dst->qscale_type  = src->qscale_type;
        }
    }

    return 0;
}

363
int av_frame_ref(AVFrame *dst, const AVFrame *src)
364 365 366 367 368 369
{
    int i, ret = 0;

    dst->format         = src->format;
    dst->width          = src->width;
    dst->height         = src->height;
370
    dst->channels       = src->channels;
371 372 373
    dst->channel_layout = src->channel_layout;
    dst->nb_samples     = src->nb_samples;

374
    ret = frame_copy_props(dst, src, 0);
375 376 377 378 379 380 381 382 383
    if (ret < 0)
        return ret;

    /* duplicate the frame data if it's not refcounted */
    if (!src->buf[0]) {
        ret = av_frame_get_buffer(dst, 32);
        if (ret < 0)
            return ret;

384 385 386 387 388
        ret = av_frame_copy(dst, src);
        if (ret < 0)
            av_frame_unref(dst);

        return ret;
389 390 391
    }

    /* ref the buffers */
392 393 394
    for (i = 0; i < FF_ARRAY_ELEMS(src->buf); i++) {
        if (!src->buf[i])
            continue;
395 396 397 398 399 400 401 402
        dst->buf[i] = av_buffer_ref(src->buf[i]);
        if (!dst->buf[i]) {
            ret = AVERROR(ENOMEM);
            goto fail;
        }
    }

    if (src->extended_buf) {
403
        dst->extended_buf = av_mallocz_array(sizeof(*dst->extended_buf),
404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421
                                       src->nb_extended_buf);
        if (!dst->extended_buf) {
            ret = AVERROR(ENOMEM);
            goto fail;
        }
        dst->nb_extended_buf = src->nb_extended_buf;

        for (i = 0; i < src->nb_extended_buf; i++) {
            dst->extended_buf[i] = av_buffer_ref(src->extended_buf[i]);
            if (!dst->extended_buf[i]) {
                ret = AVERROR(ENOMEM);
                goto fail;
            }
        }
    }

    /* duplicate extended data */
    if (src->extended_data != src->data) {
422
        int ch = src->channels;
423 424 425 426 427

        if (!ch) {
            ret = AVERROR(EINVAL);
            goto fail;
        }
428
        CHECK_CHANNELS_CONSISTENCY(src);
429

430
        dst->extended_data = av_malloc_array(sizeof(*dst->extended_data), ch);
431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448
        if (!dst->extended_data) {
            ret = AVERROR(ENOMEM);
            goto fail;
        }
        memcpy(dst->extended_data, src->extended_data, sizeof(*src->extended_data) * ch);
    } else
        dst->extended_data = dst->data;

    memcpy(dst->data,     src->data,     sizeof(src->data));
    memcpy(dst->linesize, src->linesize, sizeof(src->linesize));

    return 0;

fail:
    av_frame_unref(dst);
    return ret;
}

449
AVFrame *av_frame_clone(const AVFrame *src)
450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465
{
    AVFrame *ret = av_frame_alloc();

    if (!ret)
        return NULL;

    if (av_frame_ref(ret, src) < 0)
        av_frame_free(&ret);

    return ret;
}

void av_frame_unref(AVFrame *frame)
{
    int i;

466 467 468
    if (!frame)
        return;

469
    wipe_side_data(frame);
Anton Khirnov's avatar
Anton Khirnov committed
470

471 472 473 474 475
    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
        av_buffer_unref(&frame->buf[i]);
    for (i = 0; i < frame->nb_extended_buf; i++)
        av_buffer_unref(&frame->extended_buf[i]);
    av_freep(&frame->extended_buf);
476
    av_dict_free(&frame->metadata);
477 478
    av_buffer_unref(&frame->qp_table_buf);

479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498
    get_frame_defaults(frame);
}

void av_frame_move_ref(AVFrame *dst, AVFrame *src)
{
    *dst = *src;
    if (src->extended_data == src->data)
        dst->extended_data = dst->data;
    memset(src, 0, sizeof(*src));
    get_frame_defaults(src);
}

int av_frame_is_writable(AVFrame *frame)
{
    int i, ret = 1;

    /* assume non-refcounted frames are not writable */
    if (!frame->buf[0])
        return 0;

499 500 501
    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
        if (frame->buf[i])
            ret &= !!av_buffer_is_writable(frame->buf[i]);
502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522
    for (i = 0; i < frame->nb_extended_buf; i++)
        ret &= !!av_buffer_is_writable(frame->extended_buf[i]);

    return ret;
}

int av_frame_make_writable(AVFrame *frame)
{
    AVFrame tmp;
    int ret;

    if (!frame->buf[0])
        return AVERROR(EINVAL);

    if (av_frame_is_writable(frame))
        return 0;

    memset(&tmp, 0, sizeof(tmp));
    tmp.format         = frame->format;
    tmp.width          = frame->width;
    tmp.height         = frame->height;
523
    tmp.channels       = frame->channels;
524 525 526 527 528 529
    tmp.channel_layout = frame->channel_layout;
    tmp.nb_samples     = frame->nb_samples;
    ret = av_frame_get_buffer(&tmp, 32);
    if (ret < 0)
        return ret;

530 531 532 533
    ret = av_frame_copy(&tmp, frame);
    if (ret < 0) {
        av_frame_unref(&tmp);
        return ret;
534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550
    }

    ret = av_frame_copy_props(&tmp, frame);
    if (ret < 0) {
        av_frame_unref(&tmp);
        return ret;
    }

    av_frame_unref(frame);

    *frame = tmp;
    if (tmp.data == tmp.extended_data)
        frame->extended_data = frame->data;

    return 0;
}

551 552 553 554 555
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
{
    return frame_copy_props(dst, src, 1);
}

556 557 558 559 560 561
AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane)
{
    uint8_t *data;
    int planes, i;

    if (frame->nb_samples) {
562
        int channels = frame->channels;
563 564
        if (!channels)
            return NULL;
565
        CHECK_CHANNELS_CONSISTENCY(frame);
566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585
        planes = av_sample_fmt_is_planar(frame->format) ? channels : 1;
    } else
        planes = 4;

    if (plane < 0 || plane >= planes || !frame->extended_data[plane])
        return NULL;
    data = frame->extended_data[plane];

    for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) {
        AVBufferRef *buf = frame->buf[i];
        if (data >= buf->data && data < buf->data + buf->size)
            return buf;
    }
    for (i = 0; i < frame->nb_extended_buf; i++) {
        AVBufferRef *buf = frame->extended_buf[i];
        if (data >= buf->data && data < buf->data + buf->size)
            return buf;
    }
    return NULL;
}
Anton Khirnov's avatar
Anton Khirnov committed
586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605

AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
                                        enum AVFrameSideDataType type,
                                        int size)
{
    AVFrameSideData *ret, **tmp;

    if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1)
        return NULL;

    tmp = av_realloc(frame->side_data,
                     (frame->nb_side_data + 1) * sizeof(*frame->side_data));
    if (!tmp)
        return NULL;
    frame->side_data = tmp;

    ret = av_mallocz(sizeof(*ret));
    if (!ret)
        return NULL;

606 607 608 609 610 611
    if (size > 0) {
        ret->buf = av_buffer_alloc(size);
        if (!ret->buf) {
            av_freep(&ret);
            return NULL;
        }
Anton Khirnov's avatar
Anton Khirnov committed
612

613 614 615
        ret->data = ret->buf->data;
        ret->size = size;
    }
Anton Khirnov's avatar
Anton Khirnov committed
616 617 618 619 620 621 622
    ret->type = type;

    frame->side_data[frame->nb_side_data++] = ret;

    return ret;
}

623
AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
Anton Khirnov's avatar
Anton Khirnov committed
624 625 626 627 628 629 630 631 632 633
                                        enum AVFrameSideDataType type)
{
    int i;

    for (i = 0; i < frame->nb_side_data; i++) {
        if (frame->side_data[i]->type == type)
            return frame->side_data[i];
    }
    return NULL;
}
634 635 636 637 638 639

static int frame_copy_video(AVFrame *dst, const AVFrame *src)
{
    const uint8_t *src_data[4];
    int i, planes;

640 641
    if (dst->width  < src->width ||
        dst->height < src->height)
642 643 644 645 646 647 648 649 650 651
        return AVERROR(EINVAL);

    planes = av_pix_fmt_count_planes(dst->format);
    for (i = 0; i < planes; i++)
        if (!dst->data[i] || !src->data[i])
            return AVERROR(EINVAL);

    memcpy(src_data, src->data, sizeof(src_data));
    av_image_copy(dst->data, dst->linesize,
                  src_data, src->linesize,
652
                  dst->format, src->width, src->height);
653 654 655 656 657 658 659

    return 0;
}

static int frame_copy_audio(AVFrame *dst, const AVFrame *src)
{
    int planar   = av_sample_fmt_is_planar(dst->format);
660
    int channels = dst->channels;
661 662 663 664
    int planes   = planar ? channels : 1;
    int i;

    if (dst->nb_samples     != src->nb_samples ||
665
        dst->channels       != src->channels ||
666 667 668
        dst->channel_layout != src->channel_layout)
        return AVERROR(EINVAL);

669 670
    CHECK_CHANNELS_CONSISTENCY(src);

671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692
    for (i = 0; i < planes; i++)
        if (!dst->extended_data[i] || !src->extended_data[i])
            return AVERROR(EINVAL);

    av_samples_copy(dst->extended_data, src->extended_data, 0, 0,
                    dst->nb_samples, channels, dst->format);

    return 0;
}

int av_frame_copy(AVFrame *dst, const AVFrame *src)
{
    if (dst->format != src->format || dst->format < 0)
        return AVERROR(EINVAL);

    if (dst->width > 0 && dst->height > 0)
        return frame_copy_video(dst, src);
    else if (dst->nb_samples > 0 && dst->channel_layout)
        return frame_copy_audio(dst, src);

    return AVERROR(EINVAL);
}
693 694 695 696 697 698 699 700

void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
{
    int i;

    for (i = 0; i < frame->nb_side_data; i++) {
        AVFrameSideData *sd = frame->side_data[i];
        if (sd->type == type) {
701
            free_side_data(&frame->side_data[i]);
702 703 704 705 706
            frame->side_data[i] = frame->side_data[frame->nb_side_data - 1];
            frame->nb_side_data--;
        }
    }
}
707 708 709 710 711 712 713 714 715 716 717

const char *av_frame_side_data_name(enum AVFrameSideDataType type)
{
    switch(type) {
    case AV_FRAME_DATA_PANSCAN:         return "AVPanScan";
    case AV_FRAME_DATA_A53_CC:          return "ATSC A53 Part 4 Closed Captions";
    case AV_FRAME_DATA_STEREO3D:        return "Stereoscopic 3d metadata";
    case AV_FRAME_DATA_MATRIXENCODING:  return "AVMatrixEncoding";
    case AV_FRAME_DATA_DOWNMIX_INFO:    return "Metadata relevant to a downmix procedure";
    case AV_FRAME_DATA_REPLAYGAIN:      return "AVReplayGain";
    case AV_FRAME_DATA_DISPLAYMATRIX:   return "3x3 displaymatrix";
718
    case AV_FRAME_DATA_MOTION_VECTORS:  return "Motion vectors";
719 720 721
    }
    return NULL;
}