git.sesse.net Git - ffmpeg/blob - libavfilter/src_buffer.c

   1 /*
   2  * Copyright (c) 2008 Vitor Sessak
   3  * Copyright (c) 2010 S.N. Hemanth Meenakshisundaram
   4  * Copyright (c) 2011 Mina Nagy Zaki
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /**
  24  * @file
  25  * memory buffer source filter
  26  */
  27
  28 #include "avfilter.h"
  29 #include "internal.h"
  30 #include "avcodec.h"
  31 #include "buffersrc.h"
  32 #include "vsrc_buffer.h"
  33 #include "asrc_abuffer.h"
  34 #include "libavutil/audioconvert.h"
  35 #include "libavutil/avstring.h"
  36 #include "libavutil/fifo.h"
  37 #include "libavutil/imgutils.h"
  38
  39 typedef struct {
  40     AVFifoBuffer     *fifo;
  41     AVRational        time_base;     ///< time_base to set in the output link
  42     int eof;
  43     unsigned          nb_failed_requests;
  44
  45     /* Video only */
  46     AVFilterContext  *scale;
  47     int               h, w;
  48     enum PixelFormat  pix_fmt;
  49     AVRational        sample_aspect_ratio;
  50     char              sws_param[256];
  51
  52     /* Audio only */
  53     // Audio format of incoming buffers
  54     int sample_rate;
  55     unsigned int sample_format;
  56     int64_t channel_layout;
  57     int packing_format;
  58
  59     // Normalization filters
  60     AVFilterContext *aconvert;
  61     AVFilterContext *aresample;
  62 } BufferSourceContext;
  63
  64 #define FIFO_SIZE 8
  65
  66 #define CHECK_PARAM_CHANGE(s, c, width, height, format)\
  67     if (c->w != width || c->h != height || c->pix_fmt != format) {\
  68         av_log(s, AV_LOG_ERROR, "Changing frame properties on the fly is not supported.\n");\
  69         return AVERROR(EINVAL);\
  70     }
  71
  72 static void buf_free(AVFilterBuffer *ptr)
  73 {
  74     av_free(ptr);
  75     return;
  76 }
  77
  78 static void set_link_source(AVFilterContext *src, AVFilterLink *link)
  79 {
  80     link->src       = src;
  81     link->srcpad    = &(src->output_pads[0]);
  82     src->outputs[0] = link;
  83 }
  84
  85 static int reconfigure_filter(BufferSourceContext *abuffer, AVFilterContext *filt_ctx)
  86 {
  87     int ret;
  88     AVFilterLink * const inlink  = filt_ctx->inputs[0];
  89     AVFilterLink * const outlink = filt_ctx->outputs[0];
  90
  91     inlink->format         = abuffer->sample_format;
  92     inlink->channel_layout = abuffer->channel_layout;
  93     inlink->planar         = abuffer->packing_format;
  94     inlink->sample_rate    = abuffer->sample_rate;
  95
  96     filt_ctx->filter->uninit(filt_ctx);
  97     memset(filt_ctx->priv, 0, filt_ctx->filter->priv_size);
  98     if ((ret = filt_ctx->filter->init(filt_ctx, NULL , NULL)) < 0)
  99         return ret;
 100     if ((ret = inlink->srcpad->config_props(inlink)) < 0)
 101         return ret;
 102     return outlink->srcpad->config_props(outlink);
 103 }
 104
 105 static int insert_filter(BufferSourceContext *abuffer,
 106                          AVFilterLink *link, AVFilterContext **filt_ctx,
 107                          const char *filt_name)
 108 {
 109     int ret;
 110
 111     if ((ret = avfilter_open(filt_ctx, avfilter_get_by_name(filt_name), NULL)) < 0)
 112         return ret;
 113
 114     link->src->outputs[0] = NULL;
 115     if ((ret = avfilter_link(link->src, 0, *filt_ctx, 0)) < 0) {
 116         link->src->outputs[0] = link;
 117         return ret;
 118     }
 119
 120     set_link_source(*filt_ctx, link);
 121
 122     if ((ret = reconfigure_filter(abuffer, *filt_ctx)) < 0) {
 123         avfilter_free(*filt_ctx);
 124         return ret;
 125     }
 126
 127     return 0;
 128 }
 129
 130 static void remove_filter(AVFilterContext **filt_ctx)
 131 {
 132     AVFilterLink *outlink = (*filt_ctx)->outputs[0];
 133     AVFilterContext *src  = (*filt_ctx)->inputs[0]->src;
 134
 135     (*filt_ctx)->outputs[0] = NULL;
 136     avfilter_free(*filt_ctx);
 137     *filt_ctx = NULL;
 138
 139     set_link_source(src, outlink);
 140 }
 141
 142 static inline void log_input_change(void *ctx, AVFilterLink *link, AVFilterBufferRef *ref)
 143 {
 144     char old_layout_str[16], new_layout_str[16];
 145     av_get_channel_layout_string(old_layout_str, sizeof(old_layout_str),
 146                                  -1, link->channel_layout);
 147     av_get_channel_layout_string(new_layout_str, sizeof(new_layout_str),
 148                                  -1, ref->audio->channel_layout);
 149     av_log(ctx, AV_LOG_INFO,
 150            "Audio input format changed: "
 151            "%s:%s:%d -> %s:%s:%d, normalizing\n",
 152            av_get_sample_fmt_name(link->format),
 153            old_layout_str, (int)link->sample_rate,
 154            av_get_sample_fmt_name(ref->format),
 155            new_layout_str, ref->audio->sample_rate);
 156 }
 157
 158 static int check_format_change_video(AVFilterContext *buffer_filter,
 159                                      AVFilterBufferRef *picref)
 160 {
 161     BufferSourceContext *c = buffer_filter->priv;
 162     int ret;
 163
 164     if (picref->video->w != c->w || picref->video->h != c->h || picref->format != c->pix_fmt) {
 165         AVFilterContext *scale = buffer_filter->outputs[0]->dst;
 166         AVFilterLink *link;
 167         char scale_param[1024];
 168
 169         av_log(buffer_filter, AV_LOG_INFO,
 170                "Buffer video input changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
 171                c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name,
 172                picref->video->w, picref->video->h, av_pix_fmt_descriptors[picref->format].name);
 173
 174         if (!scale || strcmp(scale->filter->name, "scale")) {
 175             AVFilter *f = avfilter_get_by_name("scale");
 176
 177             av_log(buffer_filter, AV_LOG_INFO, "Inserting scaler filter\n");
 178             if ((ret = avfilter_open(&scale, f, "Input equalizer")) < 0)
 179                 return ret;
 180
 181             c->scale = scale;
 182
 183             snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s", c->w, c->h, c->sws_param);
 184             if ((ret = avfilter_init_filter(scale, scale_param, NULL)) < 0) {
 185                 return ret;
 186             }
 187
 188             if ((ret = avfilter_insert_filter(buffer_filter->outputs[0], scale, 0, 0)) < 0) {
 189                 return ret;
 190             }
 191             scale->outputs[0]->time_base = scale->inputs[0]->time_base;
 192
 193             scale->outputs[0]->format= c->pix_fmt;
 194         } else if (!strcmp(scale->filter->name, "scale")) {
 195             snprintf(scale_param, sizeof(scale_param)-1, "%d:%d:%s",
 196                      scale->outputs[0]->w, scale->outputs[0]->h, c->sws_param);
 197             scale->filter->init(scale, scale_param, NULL);
 198         }
 199
 200         c->pix_fmt = scale->inputs[0]->format = picref->format;
 201         c->w       = scale->inputs[0]->w      = picref->video->w;
 202         c->h       = scale->inputs[0]->h      = picref->video->h;
 203
 204         link = scale->outputs[0];
 205         if ((ret =  link->srcpad->config_props(link)) < 0)
 206             return ret;
 207     }
 208     return 0;
 209 }
 210
 211 static int check_format_change_audio(AVFilterContext *ctx,
 212                                      AVFilterBufferRef *samplesref)
 213 {
 214     BufferSourceContext *abuffer = ctx->priv;
 215     AVFilterLink *link;
 216     int ret, logged = 0;
 217
 218     link = ctx->outputs[0];
 219     if (samplesref->audio->sample_rate != link->sample_rate) {
 220
 221         log_input_change(ctx, link, samplesref);
 222         logged = 1;
 223
 224         abuffer->sample_rate = samplesref->audio->sample_rate;
 225
 226         if (!abuffer->aresample) {
 227             ret = insert_filter(abuffer, link, &abuffer->aresample, "aresample");
 228             if (ret < 0) return ret;
 229         } else {
 230             link = abuffer->aresample->outputs[0];
 231             if (samplesref->audio->sample_rate == link->sample_rate)
 232                 remove_filter(&abuffer->aresample);
 233             else
 234                 if ((ret = reconfigure_filter(abuffer, abuffer->aresample)) < 0)
 235                     return ret;
 236         }
 237     }
 238
 239     link = ctx->outputs[0];
 240     if (samplesref->format                != link->format         ||
 241         samplesref->audio->channel_layout != link->channel_layout ||
 242         samplesref->audio->planar         != link->planar) {
 243
 244         if (!logged) log_input_change(ctx, link, samplesref);
 245
 246         abuffer->sample_format  = samplesref->format;
 247         abuffer->channel_layout = samplesref->audio->channel_layout;
 248         abuffer->packing_format = samplesref->audio->planar;
 249
 250         if (!abuffer->aconvert) {
 251             ret = insert_filter(abuffer, link, &abuffer->aconvert, "aconvert");
 252             if (ret < 0) return ret;
 253         } else {
 254             link = abuffer->aconvert->outputs[0];
 255             if (samplesref->format                == link->format         &&
 256                 samplesref->audio->channel_layout == link->channel_layout &&
 257                 samplesref->audio->planar         == link->planar
 258                )
 259                 remove_filter(&abuffer->aconvert);
 260             else
 261                 if ((ret = reconfigure_filter(abuffer, abuffer->aconvert)) < 0)
 262                     return ret;
 263         }
 264     }
 265
 266     return 0;
 267 }
 268
 269 static int check_format_change(AVFilterContext *buffer_filter,
 270                                AVFilterBufferRef *picref)
 271 {
 272     switch (buffer_filter->outputs[0]->type) {
 273     case AVMEDIA_TYPE_VIDEO:
 274         return check_format_change_video(buffer_filter, picref);
 275     case AVMEDIA_TYPE_AUDIO:
 276         return check_format_change_audio(buffer_filter, picref);
 277     default:
 278         return AVERROR(ENOSYS);
 279     }
 280 }
 281
 282 static AVFilterBufferRef *copy_buffer_ref(AVFilterContext *ctx,
 283                                           AVFilterBufferRef *ref)
 284 {
 285     AVFilterLink *outlink = ctx->outputs[0];
 286     AVFilterBufferRef *buf;
 287     int channels, data_size, i;
 288
 289     switch (outlink->type) {
 290
 291     case AVMEDIA_TYPE_VIDEO:
 292         buf = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
 293                                         ref->video->w, ref->video->h);
 294         av_image_copy(buf->data, buf->linesize,
 295                       (void*)ref->data, ref->linesize,
 296                       ref->format, ref->video->w, ref->video->h);
 297         break;
 298
 299     case AVMEDIA_TYPE_AUDIO:
 300         buf = avfilter_get_audio_buffer(outlink, AV_PERM_WRITE,
 301                                         ref->audio->nb_samples);
 302         channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
 303         data_size = av_samples_get_buffer_size(NULL, channels,
 304                                                ref->audio->nb_samples,
 305                                                ref->format, 1);
 306         for (i = 0; i < FF_ARRAY_ELEMS(ref->buf->data) && ref->buf->data[i]; i++)
 307             memcpy(buf->buf->data[i], ref->buf->data[i], data_size);
 308         break;
 309
 310     default:
 311         return NULL;
 312     }
 313     avfilter_copy_buffer_ref_props(buf, ref);
 314     return buf;
 315 }
 316
 317 int av_buffersrc_add_ref(AVFilterContext *buffer_filter,
 318                          AVFilterBufferRef *picref, int flags)
 319 {
 320     BufferSourceContext *c = buffer_filter->priv;
 321     AVFilterBufferRef *buf;
 322     int ret;
 323
 324     if (!picref) {
 325         c->eof = 1;
 326         return 0;
 327     } else if (c->eof)
 328         return AVERROR(EINVAL);
 329
 330     if (!av_fifo_space(c->fifo) &&
 331         (ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
 332                                          sizeof(buf))) < 0)
 333         return ret;
 334
 335     if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) {
 336         ret = check_format_change(buffer_filter, picref);
 337         if (ret < 0)
 338             return ret;
 339     }
 340     if (flags & AV_BUFFERSRC_FLAG_NO_COPY)
 341         buf = picref;
 342     else
 343         buf = copy_buffer_ref(buffer_filter, picref);
 344
 345     if ((ret = av_fifo_generic_write(c->fifo, &buf, sizeof(buf), NULL)) < 0) {
 346         if (buf != picref)
 347             avfilter_unref_buffer(buf);
 348         return ret;
 349     }
 350     c->nb_failed_requests = 0;
 351
 352     return 0;
 353 }
 354
 355 int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
 356                                         AVFilterBufferRef *picref, int flags)
 357 {
 358     return av_buffersrc_add_ref(buffer_filter, picref, 0);
 359 }
 360
 361 #if CONFIG_AVCODEC
 362 #include "avcodec.h"
 363
 364 int av_buffersrc_add_frame(AVFilterContext *buffer_src,
 365                            const AVFrame *frame, int flags)
 366 {
 367     AVFilterBufferRef *picref;
 368     int ret;
 369
 370     if (!frame) /* NULL for EOF */
 371         return av_buffersrc_add_ref(buffer_src, NULL, flags);
 372
 373     switch (buffer_src->outputs[0]->type) {
 374     case AVMEDIA_TYPE_VIDEO:
 375         picref = avfilter_get_video_buffer_ref_from_frame(frame, AV_PERM_WRITE);
 376         break;
 377     case AVMEDIA_TYPE_AUDIO:
 378         picref = avfilter_get_audio_buffer_ref_from_frame(frame, AV_PERM_WRITE);
 379         break;
 380     default:
 381         return AVERROR(ENOSYS);
 382     }
 383     if (!picref)
 384         return AVERROR(ENOMEM);
 385     ret = av_buffersrc_add_ref(buffer_src, picref, flags);
 386     picref->buf->data[0] = NULL;
 387     avfilter_unref_buffer(picref);
 388     return ret;
 389 }
 390
 391 int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src,
 392                              const AVFrame *frame, int flags)
 393 {
 394     return av_buffersrc_add_frame(buffer_src, frame, 0);
 395 }
 396 #endif
 397
 398 unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src)
 399 {
 400     return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
 401 }
 402
 403 unsigned av_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src)
 404 {
 405     return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests;
 406 }
 407
 408 static av_cold int init_video(AVFilterContext *ctx, const char *args, void *opaque)
 409 {
 410     BufferSourceContext *c = ctx->priv;
 411     char pix_fmt_str[128];
 412     int ret, n = 0;
 413     *c->sws_param = 0;
 414
 415     if (!args ||
 416         (n = sscanf(args, "%d:%d:%127[^:]:%d:%d:%d:%d:%255c", &c->w, &c->h, pix_fmt_str,
 417                     &c->time_base.num, &c->time_base.den,
 418                     &c->sample_aspect_ratio.num, &c->sample_aspect_ratio.den, c->sws_param)) < 7) {
 419         av_log(ctx, AV_LOG_ERROR, "Expected at least 7 arguments, but only %d found in '%s'\n", n, args);
 420         return AVERROR(EINVAL);
 421     }
 422
 423     if ((ret = ff_parse_pixel_format(&c->pix_fmt, pix_fmt_str, ctx)) < 0)
 424         return ret;
 425
 426     if (!(c->fifo = av_fifo_alloc(sizeof(AVFilterBufferRef*))))
 427         return AVERROR(ENOMEM);
 428
 429     av_log(ctx, AV_LOG_INFO, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d sws_param:%s\n",
 430            c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name,
 431            c->time_base.num, c->time_base.den,
 432            c->sample_aspect_ratio.num, c->sample_aspect_ratio.den, c->sws_param);
 433     return 0;
 434 }
 435
 436 static av_cold int init_audio(AVFilterContext *ctx, const char *args0, void *opaque)
 437 {
 438     BufferSourceContext *abuffer = ctx->priv;
 439     char *arg = NULL, *ptr, chlayout_str[16];
 440     char *args = av_strdup(args0);
 441     int ret;
 442
 443     arg = av_strtok(args, ":", &ptr);
 444
 445 #define ADD_FORMAT(fmt_name)                                            \
 446     if (!arg)                                                           \
 447         goto arg_fail;                                                  \
 448     if ((ret = ff_parse_##fmt_name(&abuffer->fmt_name, arg, ctx)) < 0) { \
 449         av_freep(&args);                                                \
 450         return ret;                                                     \
 451     }                                                                   \
 452     if (*args)                                                          \
 453         arg = av_strtok(NULL, ":", &ptr)
 454
 455     ADD_FORMAT(sample_rate);
 456     ADD_FORMAT(sample_format);
 457     ADD_FORMAT(channel_layout);
 458     ADD_FORMAT(packing_format);
 459
 460     abuffer->fifo = av_fifo_alloc(FIFO_SIZE*sizeof(AVFilterBufferRef*));
 461     if (!abuffer->fifo) {
 462         av_log(ctx, AV_LOG_ERROR, "Failed to allocate fifo, filter init failed.\n");
 463         return AVERROR(ENOMEM);
 464     }
 465
 466     av_get_channel_layout_string(chlayout_str, sizeof(chlayout_str),
 467                                  -1, abuffer->channel_layout);
 468     av_log(ctx, AV_LOG_INFO, "format:%s layout:%s rate:%d\n",
 469            av_get_sample_fmt_name(abuffer->sample_format), chlayout_str,
 470            abuffer->sample_rate);
 471     av_freep(&args);
 472
 473     return 0;
 474
 475 arg_fail:
 476     av_log(ctx, AV_LOG_ERROR, "Invalid arguments, must be of the form "
 477                               "sample_rate:sample_fmt:channel_layout:packing\n");
 478     av_freep(&args);
 479     return AVERROR(EINVAL);
 480 }
 481
 482 static av_cold void uninit(AVFilterContext *ctx)
 483 {
 484     BufferSourceContext *s = ctx->priv;
 485     while (s->fifo && av_fifo_size(s->fifo)) {
 486         AVFilterBufferRef *buf;
 487         av_fifo_generic_read(s->fifo, &buf, sizeof(buf), NULL);
 488         avfilter_unref_buffer(buf);
 489     }
 490     av_fifo_free(s->fifo);
 491     s->fifo = NULL;
 492     avfilter_free(s->scale);
 493     s->scale = NULL;
 494 }
 495
 496 static int query_formats_video(AVFilterContext *ctx)
 497 {
 498     BufferSourceContext *c = ctx->priv;
 499     enum PixelFormat pix_fmts[] = { c->pix_fmt, PIX_FMT_NONE };
 500
 501     avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
 502     return 0;
 503 }
 504
 505 static int query_formats_audio(AVFilterContext *ctx)
 506 {
 507     BufferSourceContext *abuffer = ctx->priv;
 508     AVFilterFormats *formats;
 509
 510     formats = NULL;
 511     avfilter_add_format(&formats, abuffer->sample_format);
 512     avfilter_set_common_sample_formats(ctx, formats);
 513
 514     formats = NULL;
 515     avfilter_add_format(&formats, abuffer->channel_layout);
 516     avfilter_set_common_channel_layouts(ctx, formats);
 517
 518     formats = NULL;
 519     avfilter_add_format(&formats, abuffer->packing_format);
 520     avfilter_set_common_packing_formats(ctx, formats);
 521
 522     return 0;
 523 }
 524
 525 static int config_output_video(AVFilterLink *link)
 526 {
 527     BufferSourceContext *c = link->src->priv;
 528
 529     link->w = c->w;
 530     link->h = c->h;
 531     link->sample_aspect_ratio = c->sample_aspect_ratio;
 532     link->time_base = c->time_base;
 533
 534     return 0;
 535 }
 536
 537 static int config_output_audio(AVFilterLink *outlink)
 538 {
 539     BufferSourceContext *abuffer = outlink->src->priv;
 540     outlink->sample_rate = abuffer->sample_rate;
 541     return 0;
 542 }
 543
 544 static int request_frame(AVFilterLink *link)
 545 {
 546     BufferSourceContext *c = link->src->priv;
 547     AVFilterBufferRef *buf;
 548
 549     if (!av_fifo_size(c->fifo)) {
 550         if (c->eof)
 551             return AVERROR_EOF;
 552         c->nb_failed_requests++;
 553         return AVERROR(EAGAIN);
 554     }
 555     av_fifo_generic_read(c->fifo, &buf, sizeof(buf), NULL);
 556
 557     switch (link->type) {
 558     case AVMEDIA_TYPE_VIDEO:
 559         avfilter_start_frame(link, avfilter_ref_buffer(buf, ~0));
 560         avfilter_draw_slice(link, 0, link->h, 1);
 561         avfilter_end_frame(link);
 562         avfilter_unref_buffer(buf);
 563         break;
 564     case AVMEDIA_TYPE_AUDIO:
 565         avfilter_filter_samples(link, avfilter_ref_buffer(buf, ~0));
 566         avfilter_unref_buffer(buf);
 567         break;
 568     default:
 569         return AVERROR(ENOSYS);
 570     }
 571     return 0;
 572 }
 573
 574 static int poll_frame(AVFilterLink *link)
 575 {
 576     BufferSourceContext *c = link->src->priv;
 577     int size = av_fifo_size(c->fifo);
 578     if (!size && c->eof)
 579         return AVERROR_EOF;
 580     return size/sizeof(AVFilterBufferRef*);
 581 }
 582
 583 int av_asrc_buffer_add_audio_buffer_ref(AVFilterContext *ctx,
 584                                         AVFilterBufferRef *samplesref,
 585                                         int av_unused flags)
 586 {
 587     return av_buffersrc_add_ref(ctx, samplesref, AV_BUFFERSRC_FLAG_NO_COPY);
 588 }
 589
 590 int av_asrc_buffer_add_samples(AVFilterContext *ctx,
 591                                uint8_t *data[8], int linesize[8],
 592                                int nb_samples, int sample_rate,
 593                                int sample_fmt, int64_t channel_layout, int planar,
 594                                int64_t pts, int av_unused flags)
 595 {
 596     AVFilterBufferRef *samplesref;
 597
 598     samplesref = avfilter_get_audio_buffer_ref_from_arrays(
 599                      data, linesize, AV_PERM_WRITE,
 600                      nb_samples,
 601                      sample_fmt, channel_layout, planar);
 602     if (!samplesref)
 603         return AVERROR(ENOMEM);
 604
 605     samplesref->buf->free  = buf_free;
 606     samplesref->pts = pts;
 607     samplesref->audio->sample_rate = sample_rate;
 608
 609     AV_NOWARN_DEPRECATED(
 610     return av_asrc_buffer_add_audio_buffer_ref(ctx, samplesref, 0);
 611     )
 612 }
 613
 614 int av_asrc_buffer_add_buffer(AVFilterContext *ctx,
 615                               uint8_t *buf, int buf_size, int sample_rate,
 616                               int sample_fmt, int64_t channel_layout, int planar,
 617                               int64_t pts, int av_unused flags)
 618 {
 619     uint8_t *data[8] = {0};
 620     int linesize[8];
 621     int nb_channels = av_get_channel_layout_nb_channels(channel_layout),
 622         nb_samples  = buf_size / nb_channels / av_get_bytes_per_sample(sample_fmt);
 623
 624     av_samples_fill_arrays(data, linesize,
 625                            buf, nb_channels, nb_samples,
 626                            sample_fmt, 16);
 627
 628     AV_NOWARN_DEPRECATED(
 629     return av_asrc_buffer_add_samples(ctx,
 630                                       data, linesize, nb_samples,
 631                                       sample_rate,
 632                                       sample_fmt, channel_layout, planar,
 633                                       pts, flags);
 634     )
 635 }
 636
 637 AVFilter avfilter_vsrc_buffer = {
 638     .name      = "buffer",
 639     .description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."),
 640     .priv_size = sizeof(BufferSourceContext),
 641     .query_formats = query_formats_video,
 642
 643     .init      = init_video,
 644     .uninit    = uninit,
 645
 646     .inputs    = (const AVFilterPad[]) {{ .name = NULL }},
 647     .outputs   = (const AVFilterPad[]) {{ .name      = "default",
 648                                     .type            = AVMEDIA_TYPE_VIDEO,
 649                                     .request_frame   = request_frame,
 650                                     .poll_frame      = poll_frame,
 651                                     .config_props    = config_output_video, },
 652                                   { .name = NULL}},
 653 };
 654
 655 #ifdef CONFIG_ABUFFER_FILTER
 656
 657 AVFilter avfilter_asrc_abuffer = {
 658     .name        = "abuffer",
 659     .description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."),
 660     .priv_size   = sizeof(BufferSourceContext),
 661     .query_formats = query_formats_audio,
 662
 663     .init        = init_audio,
 664     .uninit      = uninit,
 665
 666     .inputs      = (const AVFilterPad[]) {{ .name = NULL }},
 667     .outputs     = (const AVFilterPad[]) {{ .name      = "default",
 668                                       .type            = AVMEDIA_TYPE_AUDIO,
 669                                       .request_frame   = request_frame,
 670                                       .poll_frame      = poll_frame,
 671                                       .config_props    = config_output_audio, },
 672                                     { .name = NULL}},
 673 };
 674
 675 #endif