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/* |
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* Copyright (c) 2008 Vitor Sessak |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* memory buffer source filter |
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*/ |
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#include <float.h> |
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#include "libavutil/avassert.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/common.h" |
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#include "libavutil/frame.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/samplefmt.h" |
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#include "libavutil/timestamp.h" |
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#include "audio.h" |
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#include "avfilter.h" |
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#include "buffersrc.h" |
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#include "formats.h" |
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#include "internal.h" |
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#include "video.h" |
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typedef struct BufferSourceContext { |
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const AVClass *class; |
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AVRational time_base; ///< time_base to set in the output link |
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AVRational frame_rate; ///< frame_rate to set in the output link |
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unsigned nb_failed_requests; |
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/* video only */ |
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int w, h; |
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enum AVPixelFormat pix_fmt; |
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AVRational pixel_aspect; |
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#if FF_API_SWS_PARAM_OPTION |
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char *sws_param; |
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#endif |
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AVBufferRef *hw_frames_ctx; |
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/* audio only */ |
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int sample_rate; |
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enum AVSampleFormat sample_fmt; |
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int channels; |
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uint64_t channel_layout; |
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char *channel_layout_str; |
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int eof; |
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} BufferSourceContext; |
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#define CHECK_VIDEO_PARAM_CHANGE(s, c, width, height, format, pts)\ |
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if (c->w != width || c->h != height || c->pix_fmt != format) {\ |
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av_log(s, AV_LOG_INFO, "filter context - w: %d h: %d fmt: %d, incoming frame - w: %d h: %d fmt: %d pts_time: %s\n",\ |
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c->w, c->h, c->pix_fmt, width, height, format, av_ts2timestr(pts, &s->outputs[0]->time_base));\ |
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av_log(s, AV_LOG_WARNING, "Changing video frame properties on the fly is not supported by all filters.\n");\ |
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} |
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#define CHECK_AUDIO_PARAM_CHANGE(s, c, srate, ch_layout, ch_count, format, pts)\ |
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if (c->sample_fmt != format || c->sample_rate != srate ||\ |
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c->channel_layout != ch_layout || c->channels != ch_count) {\ |
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av_log(s, AV_LOG_INFO, "filter context - fmt: %s r: %d layout: %"PRIX64" ch: %d, incoming frame - fmt: %s r: %d layout: %"PRIX64" ch: %d pts_time: %s\n",\ |
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av_get_sample_fmt_name(c->sample_fmt), c->sample_rate, c->channel_layout, c->channels,\ |
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av_get_sample_fmt_name(format), srate, ch_layout, ch_count, av_ts2timestr(pts, &s->outputs[0]->time_base));\ |
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av_log(s, AV_LOG_ERROR, "Changing audio frame properties on the fly is not supported.\n");\ |
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return AVERROR(EINVAL);\ |
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} |
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4685 |
AVBufferSrcParameters *av_buffersrc_parameters_alloc(void) |
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{ |
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AVBufferSrcParameters *par = av_mallocz(sizeof(*par)); |
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✗✓ |
4685 |
if (!par) |
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return NULL; |
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par->format = -1; |
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return par; |
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} |
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int av_buffersrc_parameters_set(AVFilterContext *ctx, AVBufferSrcParameters *param) |
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{ |
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BufferSourceContext *s = ctx->priv; |
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✗✓✗✗
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4685 |
if (param->time_base.num > 0 && param->time_base.den > 0) |
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s->time_base = param->time_base; |
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✓✗✗ |
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switch (ctx->filter->outputs[0].type) { |
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case AVMEDIA_TYPE_VIDEO: |
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✗✓ |
4685 |
if (param->format != AV_PIX_FMT_NONE) { |
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s->pix_fmt = param->format; |
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} |
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✗✓ |
4685 |
if (param->width > 0) |
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s->w = param->width; |
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✗✓ |
4685 |
if (param->height > 0) |
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s->h = param->height; |
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✗✓✗✗
|
4685 |
if (param->sample_aspect_ratio.num > 0 && param->sample_aspect_ratio.den > 0) |
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s->pixel_aspect = param->sample_aspect_ratio; |
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✗✓✗✗
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4685 |
if (param->frame_rate.num > 0 && param->frame_rate.den > 0) |
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s->frame_rate = param->frame_rate; |
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✗✓ |
4685 |
if (param->hw_frames_ctx) { |
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av_buffer_unref(&s->hw_frames_ctx); |
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s->hw_frames_ctx = av_buffer_ref(param->hw_frames_ctx); |
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if (!s->hw_frames_ctx) |
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return AVERROR(ENOMEM); |
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} |
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4685 |
break; |
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case AVMEDIA_TYPE_AUDIO: |
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if (param->format != AV_SAMPLE_FMT_NONE) { |
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s->sample_fmt = param->format; |
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} |
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if (param->sample_rate > 0) |
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s->sample_rate = param->sample_rate; |
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if (param->channel_layout) |
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s->channel_layout = param->channel_layout; |
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break; |
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default: |
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return AVERROR_BUG; |
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} |
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4685 |
return 0; |
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} |
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int attribute_align_arg av_buffersrc_write_frame(AVFilterContext *ctx, const AVFrame *frame) |
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{ |
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return av_buffersrc_add_frame_flags(ctx, (AVFrame *)frame, |
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AV_BUFFERSRC_FLAG_KEEP_REF); |
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} |
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int attribute_align_arg av_buffersrc_add_frame(AVFilterContext *ctx, AVFrame *frame) |
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{ |
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return av_buffersrc_add_frame_flags(ctx, frame, 0); |
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} |
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static int av_buffersrc_add_frame_internal(AVFilterContext *ctx, |
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AVFrame *frame, int flags); |
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379996 |
int attribute_align_arg av_buffersrc_add_frame_flags(AVFilterContext *ctx, AVFrame *frame, int flags) |
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{ |
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379996 |
AVFrame *copy = NULL; |
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379996 |
int ret = 0; |
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✓✓✓✓
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379996 |
if (frame && frame->channel_layout && |
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✗✓ |
279581 |
av_get_channel_layout_nb_channels(frame->channel_layout) != frame->channels) { |
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av_log(ctx, AV_LOG_ERROR, "Layout indicates a different number of channels than actually present\n"); |
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return AVERROR(EINVAL); |
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} |
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✓✓✗✓
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379996 |
if (!(flags & AV_BUFFERSRC_FLAG_KEEP_REF) || !frame) |
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379567 |
return av_buffersrc_add_frame_internal(ctx, frame, flags); |
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✗✓ |
429 |
if (!(copy = av_frame_alloc())) |
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return AVERROR(ENOMEM); |
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ret = av_frame_ref(copy, frame); |
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✓✗ |
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if (ret >= 0) |
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ret = av_buffersrc_add_frame_internal(ctx, copy, flags); |
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av_frame_free(©); |
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return ret; |
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} |
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2705645 |
static int push_frame(AVFilterGraph *graph) |
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{ |
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int ret; |
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while (1) { |
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2705645 |
ret = ff_filter_graph_run_once(graph); |
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✓✓ |
2705645 |
if (ret == AVERROR(EAGAIN)) |
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385731 |
break; |
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✗✓ |
2319914 |
if (ret < 0) |
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return ret; |
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} |
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385731 |
return 0; |
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} |
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379996 |
static int av_buffersrc_add_frame_internal(AVFilterContext *ctx, |
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AVFrame *frame, int flags) |
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{ |
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379996 |
BufferSourceContext *s = ctx->priv; |
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AVFrame *copy; |
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int refcounted, ret; |
199 |
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379996 |
s->nb_failed_requests = 0; |
201 |
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202 |
✓✓ |
379996 |
if (!frame) |
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return av_buffersrc_close(ctx, AV_NOPTS_VALUE, flags); |
204 |
✗✓ |
379991 |
if (s->eof) |
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return AVERROR(EINVAL); |
206 |
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207 |
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379991 |
refcounted = !!frame->buf[0]; |
208 |
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209 |
✓✗ |
379991 |
if (!(flags & AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT)) { |
210 |
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211 |
✓✓✗ |
379991 |
switch (ctx->outputs[0]->type) { |
212 |
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99573 |
case AVMEDIA_TYPE_VIDEO: |
213 |
✓✗✓✗ ✗✓ |
99573 |
CHECK_VIDEO_PARAM_CHANGE(ctx, s, frame->width, frame->height, |
214 |
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frame->format, frame->pts); |
215 |
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99573 |
break; |
216 |
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280418 |
case AVMEDIA_TYPE_AUDIO: |
217 |
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/* For layouts unknown on input but known on link after negotiation. */ |
218 |
✓✓ |
280418 |
if (!frame->channel_layout) |
219 |
|
837 |
frame->channel_layout = s->channel_layout; |
220 |
✓✗✓✗ ✓✗✗✓
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280418 |
CHECK_AUDIO_PARAM_CHANGE(ctx, s, frame->sample_rate, frame->channel_layout, |
221 |
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frame->channels, frame->format, frame->pts); |
222 |
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280418 |
break; |
223 |
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default: |
224 |
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return AVERROR(EINVAL); |
225 |
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} |
226 |
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227 |
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} |
228 |
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229 |
✗✓ |
379991 |
if (!(copy = av_frame_alloc())) |
230 |
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return AVERROR(ENOMEM); |
231 |
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232 |
✓✗ |
379991 |
if (refcounted) { |
233 |
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379991 |
av_frame_move_ref(copy, frame); |
234 |
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} else { |
235 |
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ret = av_frame_ref(copy, frame); |
236 |
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if (ret < 0) { |
237 |
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av_frame_free(©); |
238 |
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return ret; |
239 |
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} |
240 |
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} |
241 |
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242 |
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379991 |
ret = ff_filter_frame(ctx->outputs[0], copy); |
243 |
✗✓ |
379991 |
if (ret < 0) |
244 |
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return ret; |
245 |
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246 |
✓✓ |
379991 |
if ((flags & AV_BUFFERSRC_FLAG_PUSH)) { |
247 |
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379972 |
ret = push_frame(ctx->graph); |
248 |
✗✓ |
379972 |
if (ret < 0) |
249 |
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return ret; |
250 |
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} |
251 |
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252 |
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379991 |
return 0; |
253 |
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} |
254 |
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255 |
|
5764 |
int av_buffersrc_close(AVFilterContext *ctx, int64_t pts, unsigned flags) |
256 |
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{ |
257 |
|
5764 |
BufferSourceContext *s = ctx->priv; |
258 |
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259 |
|
5764 |
s->eof = 1; |
260 |
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5764 |
ff_avfilter_link_set_in_status(ctx->outputs[0], AVERROR_EOF, pts); |
261 |
✓✓ |
5764 |
return (flags & AV_BUFFERSRC_FLAG_PUSH) ? push_frame(ctx->graph) : 0; |
262 |
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} |
263 |
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264 |
|
4685 |
static av_cold int init_video(AVFilterContext *ctx) |
265 |
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{ |
266 |
|
4685 |
BufferSourceContext *c = ctx->priv; |
267 |
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|
268 |
✓✗✓✗ ✓✗✗✓
|
9370 |
if (c->pix_fmt == AV_PIX_FMT_NONE || !c->w || !c->h || |
269 |
|
4685 |
av_q2d(c->time_base) <= 0) { |
270 |
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av_log(ctx, AV_LOG_ERROR, "Invalid parameters provided.\n"); |
271 |
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return AVERROR(EINVAL); |
272 |
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} |
273 |
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274 |
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4685 |
av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d pixfmt:%s tb:%d/%d fr:%d/%d sar:%d/%d\n", |
275 |
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c->w, c->h, av_get_pix_fmt_name(c->pix_fmt), |
276 |
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c->time_base.num, c->time_base.den, c->frame_rate.num, c->frame_rate.den, |
277 |
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c->pixel_aspect.num, c->pixel_aspect.den); |
278 |
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279 |
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#if FF_API_SWS_PARAM_OPTION |
280 |
✗✓ |
4685 |
if (c->sws_param) |
281 |
|
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av_log(ctx, AV_LOG_WARNING, "sws_param option is deprecated and ignored\n"); |
282 |
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#endif |
283 |
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284 |
|
4685 |
return 0; |
285 |
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} |
286 |
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287 |
|
365175 |
unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src) |
288 |
|
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{ |
289 |
|
365175 |
return ((BufferSourceContext *)buffer_src->priv)->nb_failed_requests; |
290 |
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} |
291 |
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292 |
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#define OFFSET(x) offsetof(BufferSourceContext, x) |
293 |
|
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#define A AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_AUDIO_PARAM |
294 |
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#define V AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
295 |
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|
296 |
|
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static const AVOption buffer_options[] = { |
297 |
|
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{ "width", NULL, OFFSET(w), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V }, |
298 |
|
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{ "video_size", NULL, OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, .flags = V }, |
299 |
|
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{ "height", NULL, OFFSET(h), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, V }, |
300 |
|
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{ "pix_fmt", NULL, OFFSET(pix_fmt), AV_OPT_TYPE_PIXEL_FMT, { .i64 = AV_PIX_FMT_NONE }, .min = AV_PIX_FMT_NONE, .max = INT_MAX, .flags = V }, |
301 |
|
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{ "sar", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V }, |
302 |
|
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{ "pixel_aspect", "sample aspect ratio", OFFSET(pixel_aspect), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V }, |
303 |
|
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{ "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V }, |
304 |
|
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{ "frame_rate", NULL, OFFSET(frame_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, DBL_MAX, V }, |
305 |
|
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#if FF_API_SWS_PARAM_OPTION |
306 |
|
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{ "sws_param", NULL, OFFSET(sws_param), AV_OPT_TYPE_STRING, .flags = V }, |
307 |
|
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#endif |
308 |
|
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{ NULL }, |
309 |
|
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}; |
310 |
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|
311 |
|
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AVFILTER_DEFINE_CLASS(buffer); |
312 |
|
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|
313 |
|
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static const AVOption abuffer_options[] = { |
314 |
|
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{ "time_base", NULL, OFFSET(time_base), AV_OPT_TYPE_RATIONAL, { .dbl = 0 }, 0, INT_MAX, A }, |
315 |
|
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{ "sample_rate", NULL, OFFSET(sample_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A }, |
316 |
|
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{ "sample_fmt", NULL, OFFSET(sample_fmt), AV_OPT_TYPE_SAMPLE_FMT, { .i64 = AV_SAMPLE_FMT_NONE }, .min = AV_SAMPLE_FMT_NONE, .max = INT_MAX, .flags = A }, |
317 |
|
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{ "channel_layout", NULL, OFFSET(channel_layout_str), AV_OPT_TYPE_STRING, .flags = A }, |
318 |
|
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{ "channels", NULL, OFFSET(channels), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, A }, |
319 |
|
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{ NULL }, |
320 |
|
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}; |
321 |
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|
322 |
|
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AVFILTER_DEFINE_CLASS(abuffer); |
323 |
|
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|
324 |
|
1127 |
static av_cold int init_audio(AVFilterContext *ctx) |
325 |
|
|
{ |
326 |
|
1127 |
BufferSourceContext *s = ctx->priv; |
327 |
|
1127 |
int ret = 0; |
328 |
|
|
|
329 |
✗✓ |
1127 |
if (s->sample_fmt == AV_SAMPLE_FMT_NONE) { |
330 |
|
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av_log(ctx, AV_LOG_ERROR, "Sample format was not set or was invalid\n"); |
331 |
|
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return AVERROR(EINVAL); |
332 |
|
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} |
333 |
|
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|
334 |
✓✓✗✓
|
1127 |
if (s->channel_layout_str || s->channel_layout) { |
335 |
|
|
int n; |
336 |
|
|
|
337 |
✓✗ |
1121 |
if (!s->channel_layout) { |
338 |
|
1121 |
s->channel_layout = av_get_channel_layout(s->channel_layout_str); |
339 |
✗✓ |
1121 |
if (!s->channel_layout) { |
340 |
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid channel layout %s.\n", |
341 |
|
|
s->channel_layout_str); |
342 |
|
|
return AVERROR(EINVAL); |
343 |
|
|
} |
344 |
|
|
} |
345 |
|
1121 |
n = av_get_channel_layout_nb_channels(s->channel_layout); |
346 |
✗✓ |
1121 |
if (s->channels) { |
347 |
|
|
if (n != s->channels) { |
348 |
|
|
av_log(ctx, AV_LOG_ERROR, |
349 |
|
|
"Mismatching channel count %d and layout '%s' " |
350 |
|
|
"(%d channels)\n", |
351 |
|
|
s->channels, s->channel_layout_str, n); |
352 |
|
|
return AVERROR(EINVAL); |
353 |
|
|
} |
354 |
|
|
} |
355 |
|
1121 |
s->channels = n; |
356 |
✗✓ |
6 |
} else if (!s->channels) { |
357 |
|
|
av_log(ctx, AV_LOG_ERROR, "Neither number of channels nor " |
358 |
|
|
"channel layout specified\n"); |
359 |
|
|
return AVERROR(EINVAL); |
360 |
|
|
} |
361 |
|
|
|
362 |
✗✓ |
1127 |
if (!s->time_base.num) |
363 |
|
|
s->time_base = (AVRational){1, s->sample_rate}; |
364 |
|
|
|
365 |
|
1127 |
av_log(ctx, AV_LOG_VERBOSE, |
366 |
|
|
"tb:%d/%d samplefmt:%s samplerate:%d chlayout:%s\n", |
367 |
|
|
s->time_base.num, s->time_base.den, av_get_sample_fmt_name(s->sample_fmt), |
368 |
|
|
s->sample_rate, s->channel_layout_str); |
369 |
|
|
|
370 |
|
1127 |
return ret; |
371 |
|
|
} |
372 |
|
|
|
373 |
|
5812 |
static av_cold void uninit(AVFilterContext *ctx) |
374 |
|
|
{ |
375 |
|
5812 |
BufferSourceContext *s = ctx->priv; |
376 |
|
5812 |
av_buffer_unref(&s->hw_frames_ctx); |
377 |
|
5812 |
} |
378 |
|
|
|
379 |
|
5812 |
static int query_formats(AVFilterContext *ctx) |
380 |
|
|
{ |
381 |
|
5812 |
BufferSourceContext *c = ctx->priv; |
382 |
|
5812 |
AVFilterChannelLayouts *channel_layouts = NULL; |
383 |
|
5812 |
AVFilterFormats *formats = NULL; |
384 |
|
5812 |
AVFilterFormats *samplerates = NULL; |
385 |
|
|
int ret; |
386 |
|
|
|
387 |
✓✓✗ |
5812 |
switch (ctx->outputs[0]->type) { |
388 |
|
4685 |
case AVMEDIA_TYPE_VIDEO: |
389 |
✓✗✗✓
|
9370 |
if ((ret = ff_add_format (&formats, c->pix_fmt)) < 0 || |
390 |
|
4685 |
(ret = ff_set_common_formats (ctx , formats )) < 0) |
391 |
|
|
return ret; |
392 |
|
4685 |
break; |
393 |
|
1127 |
case AVMEDIA_TYPE_AUDIO: |
394 |
✓✗✓✗
|
2254 |
if ((ret = ff_add_format (&formats , c->sample_fmt )) < 0 || |
395 |
✓✗ |
2254 |
(ret = ff_set_common_formats (ctx , formats )) < 0 || |
396 |
✗✓ |
2254 |
(ret = ff_add_format (&samplerates, c->sample_rate)) < 0 || |
397 |
|
1127 |
(ret = ff_set_common_samplerates (ctx , samplerates )) < 0) |
398 |
|
|
return ret; |
399 |
|
|
|
400 |
✗✓ |
1127 |
if ((ret = ff_add_channel_layout(&channel_layouts, |
401 |
✓✓ |
1127 |
c->channel_layout ? c->channel_layout : |
402 |
|
6 |
FF_COUNT2LAYOUT(c->channels))) < 0) |
403 |
|
|
return ret; |
404 |
✗✓ |
1127 |
if ((ret = ff_set_common_channel_layouts(ctx, channel_layouts)) < 0) |
405 |
|
|
return ret; |
406 |
|
1127 |
break; |
407 |
|
|
default: |
408 |
|
|
return AVERROR(EINVAL); |
409 |
|
|
} |
410 |
|
|
|
411 |
|
5812 |
return 0; |
412 |
|
|
} |
413 |
|
|
|
414 |
|
5812 |
static int config_props(AVFilterLink *link) |
415 |
|
|
{ |
416 |
|
5812 |
BufferSourceContext *c = link->src->priv; |
417 |
|
|
|
418 |
✓✓✗ |
5812 |
switch (link->type) { |
419 |
|
4685 |
case AVMEDIA_TYPE_VIDEO: |
420 |
|
4685 |
link->w = c->w; |
421 |
|
4685 |
link->h = c->h; |
422 |
|
4685 |
link->sample_aspect_ratio = c->pixel_aspect; |
423 |
|
|
|
424 |
✗✓ |
4685 |
if (c->hw_frames_ctx) { |
425 |
|
|
link->hw_frames_ctx = av_buffer_ref(c->hw_frames_ctx); |
426 |
|
|
if (!link->hw_frames_ctx) |
427 |
|
|
return AVERROR(ENOMEM); |
428 |
|
|
} |
429 |
|
4685 |
break; |
430 |
|
1127 |
case AVMEDIA_TYPE_AUDIO: |
431 |
✓✓ |
1127 |
if (!c->channel_layout) |
432 |
|
6 |
c->channel_layout = link->channel_layout; |
433 |
|
1127 |
break; |
434 |
|
|
default: |
435 |
|
|
return AVERROR(EINVAL); |
436 |
|
|
} |
437 |
|
|
|
438 |
|
5812 |
link->time_base = c->time_base; |
439 |
|
5812 |
link->frame_rate = c->frame_rate; |
440 |
|
5812 |
return 0; |
441 |
|
|
} |
442 |
|
|
|
443 |
|
347749 |
static int request_frame(AVFilterLink *link) |
444 |
|
|
{ |
445 |
|
347749 |
BufferSourceContext *c = link->src->priv; |
446 |
|
|
|
447 |
✗✓ |
347749 |
if (c->eof) |
448 |
|
|
return AVERROR_EOF; |
449 |
|
347749 |
c->nb_failed_requests++; |
450 |
|
347749 |
return AVERROR(EAGAIN); |
451 |
|
|
} |
452 |
|
|
|
453 |
|
|
static const AVFilterPad avfilter_vsrc_buffer_outputs[] = { |
454 |
|
|
{ |
455 |
|
|
.name = "default", |
456 |
|
|
.type = AVMEDIA_TYPE_VIDEO, |
457 |
|
|
.request_frame = request_frame, |
458 |
|
|
.config_props = config_props, |
459 |
|
|
}, |
460 |
|
|
{ NULL } |
461 |
|
|
}; |
462 |
|
|
|
463 |
|
|
AVFilter ff_vsrc_buffer = { |
464 |
|
|
.name = "buffer", |
465 |
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer video frames, and make them accessible to the filterchain."), |
466 |
|
|
.priv_size = sizeof(BufferSourceContext), |
467 |
|
|
.query_formats = query_formats, |
468 |
|
|
|
469 |
|
|
.init = init_video, |
470 |
|
|
.uninit = uninit, |
471 |
|
|
|
472 |
|
|
.inputs = NULL, |
473 |
|
|
.outputs = avfilter_vsrc_buffer_outputs, |
474 |
|
|
.priv_class = &buffer_class, |
475 |
|
|
}; |
476 |
|
|
|
477 |
|
|
static const AVFilterPad avfilter_asrc_abuffer_outputs[] = { |
478 |
|
|
{ |
479 |
|
|
.name = "default", |
480 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
481 |
|
|
.request_frame = request_frame, |
482 |
|
|
.config_props = config_props, |
483 |
|
|
}, |
484 |
|
|
{ NULL } |
485 |
|
|
}; |
486 |
|
|
|
487 |
|
|
AVFilter ff_asrc_abuffer = { |
488 |
|
|
.name = "abuffer", |
489 |
|
|
.description = NULL_IF_CONFIG_SMALL("Buffer audio frames, and make them accessible to the filterchain."), |
490 |
|
|
.priv_size = sizeof(BufferSourceContext), |
491 |
|
|
.query_formats = query_formats, |
492 |
|
|
|
493 |
|
|
.init = init_audio, |
494 |
|
|
.uninit = uninit, |
495 |
|
|
|
496 |
|
|
.inputs = NULL, |
497 |
|
|
.outputs = avfilter_asrc_abuffer_outputs, |
498 |
|
|
.priv_class = &abuffer_class, |
499 |
|
|
}; |