| @@ -0,0 +1,60 @@ |
| 1 | +/* |
| 2 | + * This file is part of FFmpeg. |
| 3 | + * |
| 4 | + * FFmpeg is free software; you can redistribute it and/or |
| 5 | + * modify it under the terms of the GNU Lesser General Public |
| 6 | + * License as published by the Free Software Foundation; either |
| 7 | + * version 2.1 of the License, or (at your option) any later version. |
| 8 | + * |
| 9 | + * FFmpeg is distributed in the hope that it will be useful, |
| 10 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | + * Lesser General Public License for more details. |
| 13 | + * |
| 14 | + * You should have received a copy of the GNU Lesser General Public |
| 15 | + * License along with FFmpeg; if not, write to the Free Software |
| 16 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 17 | + */ |
| 18 | + |
| 19 | +#include "audio.h" |
| 20 | +#include "avfilter.h" |
| 21 | +#include "internal.h" |
| 22 | + |
| 23 | +static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 24 | +{ |
| 25 | + AVFilterLink *outlink = inlink->dst->outputs[0]; |
| 26 | + AVFrame *out = ff_get_audio_buffer(outlink, in->nb_samples); |
| 27 | + |
| 28 | + if (!out) { |
| 29 | + av_frame_free(&in); |
| 30 | + return AVERROR(ENOMEM); |
| 31 | + } |
| 32 | + av_frame_copy_props(out, in); |
| 33 | + av_frame_copy(out, in); |
| 34 | + av_frame_free(&in); |
| 35 | + return ff_filter_frame(outlink, out); |
| 36 | +} |
| 37 | + |
| 38 | +static const AVFilterPad acopy_inputs[] = { |
| 39 | + { |
| 40 | + .name = "default", |
| 41 | + .type = AVMEDIA_TYPE_AUDIO, |
| 42 | + .filter_frame = filter_frame, |
| 43 | + }, |
| 44 | + { NULL } |
| 45 | +}; |
| 46 | + |
| 47 | +static const AVFilterPad acopy_outputs[] = { |
| 48 | + { |
| 49 | + .name = "default", |
| 50 | + .type = AVMEDIA_TYPE_AUDIO, |
| 51 | + }, |
| 52 | + { NULL } |
| 53 | +}; |
| 54 | + |
| 55 | +AVFilter ff_af_acopy = { |
| 56 | + .name = "acopy", |
| 57 | + .description = NULL_IF_CONFIG_SMALL("Copy the input audio unchanged to the output."), |
| 58 | + .inputs = acopy_inputs, |
| 59 | + .outputs = acopy_outputs, |
| 60 | +}; |