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4349 | Serge | 1 | /* |
2 | * Copyright (c) 2007 Bobby Bingham |
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3 | * |
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4 | * This file is part of FFmpeg. |
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5 | * |
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6 | * FFmpeg is free software; you can redistribute it and/or |
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7 | * modify it under the terms of the GNU Lesser General Public |
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8 | * License as published by the Free Software Foundation; either |
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9 | * version 2.1 of the License, or (at your option) any later version. |
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10 | * |
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11 | * FFmpeg is distributed in the hope that it will be useful, |
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | * Lesser General Public License for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU Lesser General Public |
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17 | * License along with FFmpeg; if not, write to the Free Software |
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | */ |
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20 | |||
21 | /** |
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22 | * @file |
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23 | * audio and video splitter |
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24 | */ |
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25 | |||
26 | #include |
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27 | |||
28 | #include "libavutil/attributes.h" |
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29 | #include "libavutil/internal.h" |
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30 | #include "libavutil/mem.h" |
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31 | #include "libavutil/opt.h" |
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32 | |||
33 | #include "avfilter.h" |
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34 | #include "audio.h" |
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35 | #include "internal.h" |
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36 | #include "video.h" |
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37 | |||
38 | typedef struct SplitContext { |
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39 | const AVClass *class; |
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40 | int nb_outputs; |
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41 | } SplitContext; |
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42 | |||
43 | static av_cold int split_init(AVFilterContext *ctx) |
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44 | { |
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45 | SplitContext *s = ctx->priv; |
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46 | int i; |
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47 | |||
48 | for (i = 0; i < s->nb_outputs; i++) { |
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49 | char name[32]; |
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50 | AVFilterPad pad = { 0 }; |
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51 | |||
52 | snprintf(name, sizeof(name), "output%d", i); |
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53 | pad.type = ctx->filter->inputs[0].type; |
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54 | pad.name = av_strdup(name); |
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55 | |||
56 | ff_insert_outpad(ctx, i, &pad); |
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57 | } |
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58 | |||
59 | return 0; |
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60 | } |
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61 | |||
62 | static av_cold void split_uninit(AVFilterContext *ctx) |
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63 | { |
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64 | int i; |
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65 | |||
66 | for (i = 0; i < ctx->nb_outputs; i++) |
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67 | av_freep(&ctx->output_pads[i].name); |
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68 | } |
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69 | |||
70 | static int filter_frame(AVFilterLink *inlink, AVFrame *frame) |
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71 | { |
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72 | AVFilterContext *ctx = inlink->dst; |
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73 | int i, ret = AVERROR_EOF; |
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74 | |||
75 | for (i = 0; i < ctx->nb_outputs; i++) { |
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76 | AVFrame *buf_out; |
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77 | |||
78 | if (ctx->outputs[i]->closed) |
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79 | continue; |
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80 | buf_out = av_frame_clone(frame); |
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81 | if (!buf_out) { |
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82 | ret = AVERROR(ENOMEM); |
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83 | break; |
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84 | } |
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85 | |||
86 | ret = ff_filter_frame(ctx->outputs[i], buf_out); |
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87 | if (ret < 0) |
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88 | break; |
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89 | } |
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90 | av_frame_free(&frame); |
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91 | return ret; |
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92 | } |
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93 | |||
94 | #define OFFSET(x) offsetof(SplitContext, x) |
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95 | #define FLAGS AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_VIDEO_PARAM |
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96 | static const AVOption options[] = { |
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97 | { "outputs", "set number of outputs", OFFSET(nb_outputs), AV_OPT_TYPE_INT, { .i64 = 2 }, 1, INT_MAX, FLAGS }, |
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98 | { NULL } |
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99 | }; |
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100 | |||
101 | #define split_options options |
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102 | AVFILTER_DEFINE_CLASS(split); |
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103 | |||
104 | #define asplit_options options |
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105 | AVFILTER_DEFINE_CLASS(asplit); |
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106 | |||
107 | static const AVFilterPad avfilter_vf_split_inputs[] = { |
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108 | { |
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109 | .name = "default", |
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110 | .type = AVMEDIA_TYPE_VIDEO, |
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111 | .filter_frame = filter_frame, |
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112 | }, |
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113 | { NULL } |
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114 | }; |
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115 | |||
116 | AVFilter avfilter_vf_split = { |
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117 | .name = "split", |
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118 | .description = NULL_IF_CONFIG_SMALL("Pass on the input to N video outputs."), |
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119 | .priv_size = sizeof(SplitContext), |
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120 | .priv_class = &split_class, |
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121 | .init = split_init, |
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122 | .uninit = split_uninit, |
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123 | .inputs = avfilter_vf_split_inputs, |
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124 | .outputs = NULL, |
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125 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
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126 | }; |
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127 | |||
128 | static const AVFilterPad avfilter_af_asplit_inputs[] = { |
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129 | { |
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130 | .name = "default", |
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131 | .type = AVMEDIA_TYPE_AUDIO, |
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132 | .filter_frame = filter_frame, |
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133 | }, |
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134 | { NULL } |
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135 | }; |
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136 | |||
137 | AVFilter avfilter_af_asplit = { |
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138 | .name = "asplit", |
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139 | .description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."), |
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140 | .priv_size = sizeof(SplitContext), |
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141 | .priv_class = &asplit_class, |
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142 | .init = split_init, |
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143 | .uninit = split_uninit, |
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144 | .inputs = avfilter_af_asplit_inputs, |
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145 | .outputs = NULL, |
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146 | .flags = AVFILTER_FLAG_DYNAMIC_OUTPUTS, |
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147 | };>>>> |