blob: b85a22135301c197f81e2ccfc6f25f38ee22b431
| 1 | /* |
| 2 | * Copyright (c) 2007 Bobby Bingham |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * @file |
| 23 | * audio and video splitter |
| 24 | */ |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | |
| 28 | #include "libavutil/attributes.h" |
| 29 | #include "libavutil/internal.h" |
| 30 | #include "libavutil/mem.h" |
| 31 | #include "libavutil/opt.h" |
| 32 | |
| 33 | #define FF_INTERNAL_FIELDS 1 |
| 34 | #include "framequeue.h" |
| 35 | |
| 36 | #include "avfilter.h" |
| 37 | #include "audio.h" |
| 38 | #include "formats.h" |
| 39 | #include "internal.h" |
| 40 | #include "video.h" |
| 41 | |
| 42 | typedef struct SplitContext { |
| 43 | const AVClass *class; |
| 44 | int nb_outputs; |
| 45 | } SplitContext; |
| 46 | |
| 47 | static av_cold int split_init(AVFilterContext *ctx) |
| 48 | { |
| 49 | SplitContext *s = ctx->priv; |
| 50 | int i; |
| 51 | |
| 52 | for (i = 0; i < s->nb_outputs; i++) { |
| 53 | char name[32]; |
| 54 | AVFilterPad pad = { 0 }; |
| 55 | |
| 56 | snprintf(name, sizeof(name), "output%d", i); |
| 57 | pad.type = ctx->filter->inputs[0].type; |
| 58 | pad.name = av_strdup(name); |
| 59 | if (!pad.name) |
| 60 | return AVERROR(ENOMEM); |
| 61 | |
| 62 | ff_insert_outpad(ctx, i, &pad); |
| 63 | } |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | static av_cold void split_uninit(AVFilterContext *ctx) |
| 69 | { |
| 70 | int i; |
| 71 | |
| 72 | for (i = 0; i < ctx->nb_outputs; i++) |
| 73 | av_freep(&ctx->output_pads[i].name); |
| 74 | } |
| 75 | |
| 76 | static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
| 77 | { |
| 78 | AVFilterContext *ctx = inlink->dst; |
| 79 | int i, ret = AVERROR_EOF; |
| 80 | |
| 81 | for (i = 0; i < ctx->nb_outputs; i++) { |
| 82 | AVFrame *buf_out; |
| 83 | |
| 84 | if (ctx->outputs[i]->status_in) |
| 85 | continue; |
| 86 | buf_out = av_frame_clone(frame); |
| 87 | if (!buf_out) { |
| 88 | ret = AVERROR(ENOMEM); |
| 89 | break; |
| 90 | } |
| 91 | |
| 92 | ret = ff_filter_frame(ctx->outputs[i], buf_out); |
| 93 | if (ret < 0) |
| 94 | break; |
| 95 | } |
| 96 | av_frame_free(&frame); |
| 97 | return ret; |
| 98 | } |
| 99 | |
| 100 | #define OFFSET(x) offsetof(SplitContext, x) |
| 101 | #define FLAGS (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM) |
| 102 | static const AVOption options[] = { |
| 103 | { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS }, |
| 104 | { NULL } |
| 105 | }; |
| 106 | |
| 107 | #define split_options options |
| 108 | AVFILTER_DEFINE_CLASS(split); |
| 109 | |
| 110 | #define asplit_options options |
| 111 | AVFILTER_DEFINE_CLASS(asplit); |
| 112 | |
| 113 | static const AVFilterPad avfilter_vf_split_inputs[] = { |
| 114 | { |
| 115 | .name = "default", |
| 116 | .type = AVMEDIA_TYPE_VIDEO, |
| 117 | .filter_frame = filter_frame, |
| 118 | }, |
| 119 | { NULL } |
| 120 | }; |
| 121 | |
| 122 | AVFilter ff_vf_split = { |
| 123 | .name = "split", |
| 124 | .description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."), |
| 125 | .priv_size = sizeof(SplitContext), |
| 126 | .priv_class = &split_class, |
| 127 | .init = split_init, |
| 128 | .uninit = split_uninit, |
| 129 | .inputs = avfilter_vf_split_inputs, |
| 130 | .outputs = NULL, |
| 131 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| 132 | }; |
| 133 | |
| 134 | static const AVFilterPad avfilter_af_asplit_inputs[] = { |
| 135 | { |
| 136 | .name = "default", |
| 137 | .type = AVMEDIA_TYPE_AUDIO, |
| 138 | .filter_frame = filter_frame, |
| 139 | }, |
| 140 | { NULL } |
| 141 | }; |
| 142 | |
| 143 | AVFilter ff_af_asplit = { |
| 144 | .name = "asplit", |
| 145 | .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."), |
| 146 | .priv_size = sizeof(SplitContext), |
| 147 | .priv_class = &asplit_class, |
| 148 | .init = split_init, |
| 149 | .uninit = split_uninit, |
| 150 | .inputs = avfilter_af_asplit_inputs, |
| 151 | .outputs = NULL, |
| 152 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
| 153 | }; |
| 154 |