1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Copyright (c) 2007 Bobby Bingham
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* audio and video splitter
*/
#include <stdio.h>
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "avfilter.h"
#include "audio.h"
#include "internal.h"
#include "video.h"
static int split_init(AVFilterContext *ctx, const char *args)
{
int i, nb_outputs = 2;
if (args) {
nb_outputs = strtol(args, NULL, 0);
if (nb_outputs <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid number of outputs specified: %d.\n",
nb_outputs);
return AVERROR(EINVAL);
}
}
for (i = 0; i < nb_outputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
pad.rej_perms = AV_PERM_WRITE;
ff_insert_outpad(ctx, i, &pad);
}
return 0;
}
static void split_uninit(AVFilterContext *ctx)
{
int i;
for (i = 0; i < ctx->nb_outputs; i++)
av_freep(&ctx->output_pads[i].name);
}
static int start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
{
AVFilterContext *ctx = inlink->dst;
int i, ret = 0;
for (i = 0; i < ctx->nb_outputs; i++) {
AVFilterBufferRef *buf_out = avfilter_ref_buffer(picref, ~AV_PERM_WRITE);
if (!buf_out)
return AVERROR(ENOMEM);
ret = ff_start_frame(ctx->outputs[i], buf_out);
if (ret < 0)
break;
}
return ret;
}
static int draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
{
AVFilterContext *ctx = inlink->dst;
int i, ret = 0;
for (i = 0; i < ctx->nb_outputs; i++) {
ret = ff_draw_slice(ctx->outputs[i], y, h, slice_dir);
if (ret < 0)
break;
}
return ret;
}
static int end_frame(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
int i, ret = 0;
for (i = 0; i < ctx->nb_outputs; i++) {
ret = ff_end_frame(ctx->outputs[i]);
if (ret < 0)
break;
}
return ret;
}
AVFilter avfilter_vf_split = {
.name = "split",
.description = NULL_IF_CONFIG_SMALL("Pass on the input video to N outputs."),
.init = split_init,
.uninit = split_uninit,
.inputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.get_video_buffer= ff_null_get_video_buffer,
.start_frame = start_frame,
.draw_slice = draw_slice,
.end_frame = end_frame, },
{ .name = NULL}},
.outputs = (const AVFilterPad[]) {{ .name = NULL}},
};
static int filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
{
AVFilterContext *ctx = inlink->dst;
int i, ret = 0;
for (i = 0; i < ctx->nb_outputs; i++) {
AVFilterBufferRef *buf_out = avfilter_ref_buffer(samplesref,
~AV_PERM_WRITE);
if (!buf_out) {
ret = AVERROR(ENOMEM);
break;
}
ret = ff_filter_samples(inlink->dst->outputs[i], buf_out);
if (ret < 0)
break;
}
avfilter_unref_buffer(samplesref);
return ret;
}
AVFilter avfilter_af_asplit = {
.name = "asplit",
.description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
.init = split_init,
.uninit = split_uninit,
.inputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer,
.filter_samples = filter_samples },
{ .name = NULL }},
.outputs = (const AVFilterPad[]) {{ .name = NULL }},
};
|
