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/* |
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* Copyright (c) 2011 Stefano Sabatini |
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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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* eval audio source |
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*/ |
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#include "libavutil/avassert.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/channel_layout.h" |
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#include "libavutil/eval.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/parseutils.h" |
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#include "avfilter.h" |
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#include "audio.h" |
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#include "internal.h" |
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static const char * const var_names[] = { |
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"ch", ///< the value of the current channel |
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"n", ///< number of frame |
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"nb_in_channels", |
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"nb_out_channels", |
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"t", ///< timestamp expressed in seconds |
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"s", ///< sample rate |
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NULL |
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}; |
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enum var_name { |
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VAR_CH, |
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VAR_N, |
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VAR_NB_IN_CHANNELS, |
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VAR_NB_OUT_CHANNELS, |
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VAR_T, |
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VAR_S, |
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VAR_VARS_NB |
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}; |
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typedef struct EvalContext { |
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const AVClass *class; |
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char *sample_rate_str; |
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int sample_rate; |
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int64_t chlayout; |
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char *chlayout_str; |
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int nb_channels; ///< number of output channels |
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int nb_in_channels; ///< number of input channels |
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int same_chlayout; ///< set output as input channel layout |
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int64_t pts; |
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AVExpr **expr; |
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char *exprs; |
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int nb_samples; ///< number of samples per requested frame |
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int64_t duration; |
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uint64_t n; |
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double var_values[VAR_VARS_NB]; |
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double *channel_values; |
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int64_t out_channel_layout; |
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} EvalContext; |
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264600 |
static double val(void *priv, double ch) |
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{ |
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264600 |
EvalContext *eval = priv; |
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✗✓ |
264600 |
return eval->channel_values[FFMIN((int)ch, eval->nb_in_channels-1)]; |
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} |
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static double (* const aeval_func1[])(void *, double) = { val, NULL }; |
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static const char * const aeval_func1_names[] = { "val", NULL }; |
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#define OFFSET(x) offsetof(EvalContext, x) |
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#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
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static const AVOption aevalsrc_options[]= { |
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{ "exprs", "set the '|'-separated list of channels expressions", OFFSET(exprs), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS }, |
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{ "nb_samples", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 0, INT_MAX, FLAGS }, |
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{ "n", "set the number of samples per requested frame", OFFSET(nb_samples), AV_OPT_TYPE_INT, {.i64 = 1024}, 0, INT_MAX, FLAGS }, |
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{ "sample_rate", "set the sample rate", OFFSET(sample_rate_str), AV_OPT_TYPE_STRING, {.str = "44100"}, 0, 0, FLAGS }, |
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{ "s", "set the sample rate", OFFSET(sample_rate_str), AV_OPT_TYPE_STRING, {.str = "44100"}, 0, 0, FLAGS }, |
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{ "duration", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS }, |
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{ "d", "set audio duration", OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = -1}, -1, INT64_MAX, FLAGS }, |
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{ "channel_layout", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
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{ "c", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
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{ NULL } |
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}; |
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AVFILTER_DEFINE_CLASS(aevalsrc); |
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15 |
static int parse_channel_expressions(AVFilterContext *ctx, |
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int expected_nb_channels) |
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{ |
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EvalContext *eval = ctx->priv; |
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char *args1 = av_strdup(eval->exprs); |
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char *expr, *last_expr = NULL, *buf; |
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double (* const *func1)(void *, double) = NULL; |
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const char * const *func1_names = NULL; |
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int i, ret = 0; |
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✗✓ |
15 |
if (!args1) |
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return AVERROR(ENOMEM); |
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✗✓ |
15 |
if (!eval->exprs) { |
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av_log(ctx, AV_LOG_ERROR, "Channels expressions list is empty\n"); |
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return AVERROR(EINVAL); |
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} |
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✓✓ |
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if (!strcmp(ctx->filter->name, "aeval")) { |
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func1 = aeval_func1; |
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func1_names = aeval_func1_names; |
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} |
125 |
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#define ADD_EXPRESSION(expr_) do { \ |
127 |
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if (!av_dynarray2_add((void **)&eval->expr, &eval->nb_channels, \ |
128 |
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sizeof(*eval->expr), NULL)) { \ |
129 |
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ret = AVERROR(ENOMEM); \ |
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goto end; \ |
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} \ |
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eval->expr[eval->nb_channels-1] = NULL; \ |
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ret = av_expr_parse(&eval->expr[eval->nb_channels - 1], expr_, \ |
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var_names, func1_names, func1, \ |
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NULL, NULL, 0, ctx); \ |
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if (ret < 0) \ |
137 |
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goto end; \ |
138 |
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} while (0) |
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140 |
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/* reset expressions */ |
141 |
✗✓ |
15 |
for (i = 0; i < eval->nb_channels; i++) { |
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av_expr_free(eval->expr[i]); |
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eval->expr[i] = NULL; |
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} |
145 |
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av_freep(&eval->expr); |
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eval->nb_channels = 0; |
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148 |
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buf = args1; |
149 |
✓✓ |
30 |
while (expr = av_strtok(buf, "|", &buf)) { |
150 |
✗✓✗✓
|
15 |
ADD_EXPRESSION(expr); |
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last_expr = expr; |
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} |
153 |
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154 |
✗✓ |
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if (expected_nb_channels > eval->nb_channels) |
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for (i = eval->nb_channels; i < expected_nb_channels; i++) |
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ADD_EXPRESSION(last_expr); |
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158 |
✓✗✗✗
|
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if (expected_nb_channels > 0 && eval->nb_channels != expected_nb_channels) { |
159 |
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av_log(ctx, AV_LOG_ERROR, |
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"Mismatch between the specified number of channel expressions '%d' " |
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"and the number of expected output channels '%d' for the specified channel layout\n", |
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eval->nb_channels, expected_nb_channels); |
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ret = AVERROR(EINVAL); |
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goto end; |
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} |
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end: |
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av_free(args1); |
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return ret; |
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} |
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172 |
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static av_cold int init(AVFilterContext *ctx) |
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{ |
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EvalContext *eval = ctx->priv; |
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int ret = 0; |
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177 |
✗✓ |
15 |
if (eval->chlayout_str) { |
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if (!strcmp(eval->chlayout_str, "same") && !strcmp(ctx->filter->name, "aeval")) { |
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eval->same_chlayout = 1; |
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} else { |
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ret = ff_parse_channel_layout(&eval->chlayout, NULL, eval->chlayout_str, ctx); |
182 |
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if (ret < 0) |
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return ret; |
184 |
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185 |
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ret = parse_channel_expressions(ctx, av_get_channel_layout_nb_channels(eval->chlayout)); |
186 |
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if (ret < 0) |
187 |
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return ret; |
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} |
189 |
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} else { |
190 |
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/* guess channel layout from nb expressions/channels */ |
191 |
✗✓ |
15 |
if ((ret = parse_channel_expressions(ctx, -1)) < 0) |
192 |
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return ret; |
193 |
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194 |
|
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eval->chlayout = av_get_default_channel_layout(eval->nb_channels); |
195 |
✗✓✗✗
|
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if (!eval->chlayout && eval->nb_channels <= 0) { |
196 |
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av_log(ctx, AV_LOG_ERROR, "Invalid number of channels '%d' provided\n", |
197 |
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eval->nb_channels); |
198 |
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return AVERROR(EINVAL); |
199 |
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} |
200 |
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} |
201 |
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202 |
✓✓ |
15 |
if (eval->sample_rate_str) |
203 |
✗✓ |
14 |
if ((ret = ff_parse_sample_rate(&eval->sample_rate, eval->sample_rate_str, ctx))) |
204 |
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return ret; |
205 |
|
15 |
eval->n = 0; |
206 |
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207 |
|
15 |
return ret; |
208 |
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} |
209 |
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210 |
|
15 |
static av_cold void uninit(AVFilterContext *ctx) |
211 |
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{ |
212 |
|
15 |
EvalContext *eval = ctx->priv; |
213 |
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int i; |
214 |
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215 |
✓✓ |
30 |
for (i = 0; i < eval->nb_channels; i++) { |
216 |
|
15 |
av_expr_free(eval->expr[i]); |
217 |
|
15 |
eval->expr[i] = NULL; |
218 |
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} |
219 |
|
15 |
av_freep(&eval->expr); |
220 |
|
15 |
av_freep(&eval->channel_values); |
221 |
|
15 |
} |
222 |
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223 |
|
13 |
static int config_props(AVFilterLink *outlink) |
224 |
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{ |
225 |
|
13 |
EvalContext *eval = outlink->src->priv; |
226 |
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char buf[128]; |
227 |
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228 |
|
13 |
outlink->time_base = (AVRational){1, eval->sample_rate}; |
229 |
|
13 |
outlink->sample_rate = eval->sample_rate; |
230 |
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231 |
|
13 |
eval->var_values[VAR_S] = eval->sample_rate; |
232 |
|
13 |
eval->var_values[VAR_NB_IN_CHANNELS] = NAN; |
233 |
|
13 |
eval->var_values[VAR_NB_OUT_CHANNELS] = outlink->channels; |
234 |
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235 |
|
13 |
av_get_channel_layout_string(buf, sizeof(buf), 0, eval->chlayout); |
236 |
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237 |
|
13 |
av_log(outlink->src, AV_LOG_VERBOSE, |
238 |
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"sample_rate:%d chlayout:%s duration:%"PRId64"\n", |
239 |
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eval->sample_rate, buf, eval->duration); |
240 |
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241 |
|
13 |
return 0; |
242 |
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} |
243 |
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244 |
|
13 |
static int query_formats(AVFilterContext *ctx) |
245 |
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{ |
246 |
|
13 |
EvalContext *eval = ctx->priv; |
247 |
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static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE }; |
248 |
✓✗ |
13 |
int64_t chlayouts[] = { eval->chlayout ? eval->chlayout : FF_COUNT2LAYOUT(eval->nb_channels) , -1 }; |
249 |
|
13 |
int sample_rates[] = { eval->sample_rate, -1 }; |
250 |
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AVFilterFormats *formats; |
251 |
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AVFilterChannelLayouts *layouts; |
252 |
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int ret; |
253 |
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254 |
|
13 |
formats = ff_make_format_list(sample_fmts); |
255 |
✗✓ |
13 |
if (!formats) |
256 |
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return AVERROR(ENOMEM); |
257 |
|
13 |
ret = ff_set_common_formats (ctx, formats); |
258 |
✗✓ |
13 |
if (ret < 0) |
259 |
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return ret; |
260 |
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261 |
|
13 |
layouts = ff_make_format64_list(chlayouts); |
262 |
✗✓ |
13 |
if (!layouts) |
263 |
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return AVERROR(ENOMEM); |
264 |
|
13 |
ret = ff_set_common_channel_layouts(ctx, layouts); |
265 |
✗✓ |
13 |
if (ret < 0) |
266 |
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return ret; |
267 |
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|
268 |
|
13 |
formats = ff_make_format_list(sample_rates); |
269 |
✗✓ |
13 |
if (!formats) |
270 |
|
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return AVERROR(ENOMEM); |
271 |
|
13 |
return ff_set_common_samplerates(ctx, formats); |
272 |
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} |
273 |
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274 |
|
8472 |
static int request_frame(AVFilterLink *outlink) |
275 |
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{ |
276 |
|
8472 |
EvalContext *eval = outlink->src->priv; |
277 |
|
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AVFrame *samplesref; |
278 |
|
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int i, j; |
279 |
|
8472 |
int64_t t = av_rescale(eval->n, AV_TIME_BASE, eval->sample_rate); |
280 |
|
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int nb_samples; |
281 |
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|
282 |
✓✗✓✓
|
8472 |
if (eval->duration >= 0 && t >= eval->duration) |
283 |
|
13 |
return AVERROR_EOF; |
284 |
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|
285 |
✓✗ |
8459 |
if (eval->duration >= 0) { |
286 |
|
8459 |
nb_samples = FFMIN(eval->nb_samples, av_rescale(eval->duration, eval->sample_rate, AV_TIME_BASE) - eval->pts); |
287 |
✗✓ |
8459 |
if (!nb_samples) |
288 |
|
|
return AVERROR_EOF; |
289 |
|
|
} else { |
290 |
|
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nb_samples = eval->nb_samples; |
291 |
|
|
} |
292 |
|
8459 |
samplesref = ff_get_audio_buffer(outlink, nb_samples); |
293 |
✗✓ |
8459 |
if (!samplesref) |
294 |
|
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return AVERROR(ENOMEM); |
295 |
|
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|
296 |
|
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/* evaluate expression for each single sample and for each channel */ |
297 |
✓✓ |
8661982 |
for (i = 0; i < nb_samples; i++, eval->n++) { |
298 |
|
8653523 |
eval->var_values[VAR_N] = eval->n; |
299 |
|
8653523 |
eval->var_values[VAR_T] = eval->var_values[VAR_N] * (double)1/eval->sample_rate; |
300 |
|
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|
301 |
✓✓ |
17307046 |
for (j = 0; j < eval->nb_channels; j++) { |
302 |
|
8653523 |
*((double *) samplesref->extended_data[j] + i) = |
303 |
|
8653523 |
av_expr_eval(eval->expr[j], eval->var_values, NULL); |
304 |
|
|
} |
305 |
|
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} |
306 |
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|
307 |
|
8459 |
samplesref->pts = eval->pts; |
308 |
|
8459 |
samplesref->sample_rate = eval->sample_rate; |
309 |
|
8459 |
eval->pts += nb_samples; |
310 |
|
|
|
311 |
|
8459 |
return ff_filter_frame(outlink, samplesref); |
312 |
|
|
} |
313 |
|
|
|
314 |
|
|
#if CONFIG_AEVALSRC_FILTER |
315 |
|
|
static const AVFilterPad aevalsrc_outputs[] = { |
316 |
|
|
{ |
317 |
|
|
.name = "default", |
318 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
319 |
|
|
.config_props = config_props, |
320 |
|
|
.request_frame = request_frame, |
321 |
|
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}, |
322 |
|
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{ NULL } |
323 |
|
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}; |
324 |
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|
325 |
|
|
AVFilter ff_asrc_aevalsrc = { |
326 |
|
|
.name = "aevalsrc", |
327 |
|
|
.description = NULL_IF_CONFIG_SMALL("Generate an audio signal generated by an expression."), |
328 |
|
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.query_formats = query_formats, |
329 |
|
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.init = init, |
330 |
|
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.uninit = uninit, |
331 |
|
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.priv_size = sizeof(EvalContext), |
332 |
|
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.inputs = NULL, |
333 |
|
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.outputs = aevalsrc_outputs, |
334 |
|
|
.priv_class = &aevalsrc_class, |
335 |
|
|
}; |
336 |
|
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|
337 |
|
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#endif /* CONFIG_AEVALSRC_FILTER */ |
338 |
|
|
|
339 |
|
|
#define OFFSET(x) offsetof(EvalContext, x) |
340 |
|
|
#define FLAGS AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM |
341 |
|
|
|
342 |
|
|
static const AVOption aeval_options[]= { |
343 |
|
|
{ "exprs", "set the '|'-separated list of channels expressions", OFFSET(exprs), AV_OPT_TYPE_STRING, {.str = NULL}, .flags = FLAGS }, |
344 |
|
|
{ "channel_layout", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
345 |
|
|
{ "c", "set channel layout", OFFSET(chlayout_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS }, |
346 |
|
|
{ NULL } |
347 |
|
|
}; |
348 |
|
|
|
349 |
|
|
AVFILTER_DEFINE_CLASS(aeval); |
350 |
|
|
|
351 |
|
1 |
static int aeval_query_formats(AVFilterContext *ctx) |
352 |
|
|
{ |
353 |
|
1 |
AVFilterFormats *formats = NULL; |
354 |
|
|
AVFilterChannelLayouts *layouts; |
355 |
|
1 |
AVFilterLink *inlink = ctx->inputs[0]; |
356 |
|
1 |
AVFilterLink *outlink = ctx->outputs[0]; |
357 |
|
1 |
EvalContext *eval = ctx->priv; |
358 |
|
|
static const enum AVSampleFormat sample_fmts[] = { |
359 |
|
|
AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE |
360 |
|
|
}; |
361 |
|
|
int ret; |
362 |
|
|
|
363 |
|
|
// inlink supports any channel layout |
364 |
|
1 |
layouts = ff_all_channel_counts(); |
365 |
✗✓ |
1 |
if ((ret = ff_channel_layouts_ref(layouts, &inlink->outcfg.channel_layouts)) < 0) |
366 |
|
|
return ret; |
367 |
|
|
|
368 |
✗✓ |
1 |
if (eval->same_chlayout) { |
369 |
|
|
layouts = ff_all_channel_counts(); |
370 |
|
|
if ((ret = ff_set_common_channel_layouts(ctx, layouts)) < 0) |
371 |
|
|
return ret; |
372 |
|
|
} else { |
373 |
|
|
// outlink supports only requested output channel layout |
374 |
|
1 |
layouts = NULL; |
375 |
✗✓ |
1 |
if ((ret = ff_add_channel_layout(&layouts, |
376 |
✗✓ |
1 |
eval->out_channel_layout ? eval->out_channel_layout : |
377 |
|
1 |
FF_COUNT2LAYOUT(eval->nb_channels))) < 0) |
378 |
|
|
return ret; |
379 |
✗✓ |
1 |
if ((ret = ff_channel_layouts_ref(layouts, &outlink->incfg.channel_layouts)) < 0) |
380 |
|
|
return ret; |
381 |
|
|
} |
382 |
|
|
|
383 |
|
1 |
formats = ff_make_format_list(sample_fmts); |
384 |
✗✓ |
1 |
if ((ret = ff_set_common_formats(ctx, formats)) < 0) |
385 |
|
|
return ret; |
386 |
|
|
|
387 |
|
1 |
formats = ff_all_samplerates(); |
388 |
|
1 |
return ff_set_common_samplerates(ctx, formats); |
389 |
|
|
} |
390 |
|
|
|
391 |
|
1 |
static int aeval_config_output(AVFilterLink *outlink) |
392 |
|
|
{ |
393 |
|
1 |
AVFilterContext *ctx = outlink->src; |
394 |
|
1 |
EvalContext *eval = ctx->priv; |
395 |
|
1 |
AVFilterLink *inlink = ctx->inputs[0]; |
396 |
|
|
int ret; |
397 |
|
|
|
398 |
✗✓ |
1 |
if (eval->same_chlayout) { |
399 |
|
|
eval->chlayout = inlink->channel_layout; |
400 |
|
|
|
401 |
|
|
if ((ret = parse_channel_expressions(ctx, inlink->channels)) < 0) |
402 |
|
|
return ret; |
403 |
|
|
} |
404 |
|
|
|
405 |
|
1 |
eval->n = 0; |
406 |
|
1 |
eval->nb_in_channels = eval->var_values[VAR_NB_IN_CHANNELS] = inlink->channels; |
407 |
|
1 |
eval->var_values[VAR_NB_OUT_CHANNELS] = outlink->channels; |
408 |
|
1 |
eval->var_values[VAR_S] = inlink->sample_rate; |
409 |
|
1 |
eval->var_values[VAR_T] = NAN; |
410 |
|
|
|
411 |
|
2 |
eval->channel_values = av_realloc_f(eval->channel_values, |
412 |
|
1 |
inlink->channels, sizeof(*eval->channel_values)); |
413 |
✗✓ |
1 |
if (!eval->channel_values) |
414 |
|
|
return AVERROR(ENOMEM); |
415 |
|
|
|
416 |
|
1 |
return 0; |
417 |
|
|
} |
418 |
|
|
|
419 |
|
130 |
static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
420 |
|
|
{ |
421 |
|
130 |
EvalContext *eval = inlink->dst->priv; |
422 |
|
130 |
AVFilterLink *outlink = inlink->dst->outputs[0]; |
423 |
|
130 |
int nb_samples = in->nb_samples; |
424 |
|
|
AVFrame *out; |
425 |
|
|
double t0; |
426 |
|
|
int i, j; |
427 |
|
|
|
428 |
|
130 |
out = ff_get_audio_buffer(outlink, nb_samples); |
429 |
✗✓ |
130 |
if (!out) { |
430 |
|
|
av_frame_free(&in); |
431 |
|
|
return AVERROR(ENOMEM); |
432 |
|
|
} |
433 |
|
130 |
av_frame_copy_props(out, in); |
434 |
|
|
|
435 |
✓✗ |
130 |
t0 = TS2T(in->pts, inlink->time_base); |
436 |
|
|
|
437 |
|
|
/* evaluate expression for each single sample and for each channel */ |
438 |
✓✓ |
264730 |
for (i = 0; i < nb_samples; i++, eval->n++) { |
439 |
|
264600 |
eval->var_values[VAR_N] = eval->n; |
440 |
|
264600 |
eval->var_values[VAR_T] = t0 + i * (double)1/inlink->sample_rate; |
441 |
|
|
|
442 |
✓✓ |
529200 |
for (j = 0; j < inlink->channels; j++) |
443 |
|
264600 |
eval->channel_values[j] = *((double *) in->extended_data[j] + i); |
444 |
|
|
|
445 |
✓✓ |
529200 |
for (j = 0; j < outlink->channels; j++) { |
446 |
|
264600 |
eval->var_values[VAR_CH] = j; |
447 |
|
264600 |
*((double *) out->extended_data[j] + i) = |
448 |
|
264600 |
av_expr_eval(eval->expr[j], eval->var_values, eval); |
449 |
|
|
} |
450 |
|
|
} |
451 |
|
|
|
452 |
|
130 |
av_frame_free(&in); |
453 |
|
130 |
return ff_filter_frame(outlink, out); |
454 |
|
|
} |
455 |
|
|
|
456 |
|
|
#if CONFIG_AEVAL_FILTER |
457 |
|
|
|
458 |
|
|
static const AVFilterPad aeval_inputs[] = { |
459 |
|
|
{ |
460 |
|
|
.name = "default", |
461 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
462 |
|
|
.filter_frame = filter_frame, |
463 |
|
|
}, |
464 |
|
|
{ NULL } |
465 |
|
|
}; |
466 |
|
|
|
467 |
|
|
static const AVFilterPad aeval_outputs[] = { |
468 |
|
|
{ |
469 |
|
|
.name = "default", |
470 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
471 |
|
|
.config_props = aeval_config_output, |
472 |
|
|
}, |
473 |
|
|
{ NULL } |
474 |
|
|
}; |
475 |
|
|
|
476 |
|
|
AVFilter ff_af_aeval = { |
477 |
|
|
.name = "aeval", |
478 |
|
|
.description = NULL_IF_CONFIG_SMALL("Filter audio signal according to a specified expression."), |
479 |
|
|
.query_formats = aeval_query_formats, |
480 |
|
|
.init = init, |
481 |
|
|
.uninit = uninit, |
482 |
|
|
.priv_size = sizeof(EvalContext), |
483 |
|
|
.inputs = aeval_inputs, |
484 |
|
|
.outputs = aeval_outputs, |
485 |
|
|
.priv_class = &aeval_class, |
486 |
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
487 |
|
|
}; |
488 |
|
|
|
489 |
|
|
#endif /* CONFIG_AEVAL_FILTER */ |