1 |
|
|
/* |
2 |
|
|
* Copyright (c) 2018 Paul B Mahol |
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 |
|
|
#include "libavutil/avassert.h" |
22 |
|
|
#include "libavutil/channel_layout.h" |
23 |
|
|
#include "libavutil/common.h" |
24 |
|
|
#include "libavutil/float_dsp.h" |
25 |
|
|
#include "libavutil/opt.h" |
26 |
|
|
|
27 |
|
|
#include "audio.h" |
28 |
|
|
#include "avfilter.h" |
29 |
|
|
#include "formats.h" |
30 |
|
|
#include "filters.h" |
31 |
|
|
#include "internal.h" |
32 |
|
|
|
33 |
|
|
typedef struct AudioMultiplyContext { |
34 |
|
|
const AVClass *class; |
35 |
|
|
|
36 |
|
|
AVFrame *frames[2]; |
37 |
|
|
int planes; |
38 |
|
|
int channels; |
39 |
|
|
int samples_align; |
40 |
|
|
|
41 |
|
|
AVFloatDSPContext *fdsp; |
42 |
|
|
} AudioMultiplyContext; |
43 |
|
|
|
44 |
|
|
static int query_formats(AVFilterContext *ctx) |
45 |
|
|
{ |
46 |
|
|
AVFilterFormats *formats; |
47 |
|
|
AVFilterChannelLayouts *layouts; |
48 |
|
|
static const enum AVSampleFormat sample_fmts[] = { |
49 |
|
|
AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLTP, |
50 |
|
|
AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBLP, |
51 |
|
|
AV_SAMPLE_FMT_NONE |
52 |
|
|
}; |
53 |
|
|
int ret; |
54 |
|
|
|
55 |
|
|
layouts = ff_all_channel_counts(); |
56 |
|
|
if (!layouts) |
57 |
|
|
return AVERROR(ENOMEM); |
58 |
|
|
ret = ff_set_common_channel_layouts(ctx, layouts); |
59 |
|
|
if (ret < 0) |
60 |
|
|
return ret; |
61 |
|
|
|
62 |
|
|
formats = ff_make_format_list(sample_fmts); |
63 |
|
|
if (!formats) |
64 |
|
|
return AVERROR(ENOMEM); |
65 |
|
|
ret = ff_set_common_formats(ctx, formats); |
66 |
|
|
if (ret < 0) |
67 |
|
|
return ret; |
68 |
|
|
|
69 |
|
|
formats = ff_all_samplerates(); |
70 |
|
|
if (!formats) |
71 |
|
|
return AVERROR(ENOMEM); |
72 |
|
|
return ff_set_common_samplerates(ctx, formats); |
73 |
|
|
} |
74 |
|
|
|
75 |
|
|
static int activate(AVFilterContext *ctx) |
76 |
|
|
{ |
77 |
|
|
AudioMultiplyContext *s = ctx->priv; |
78 |
|
|
int i, ret, status; |
79 |
|
|
int nb_samples; |
80 |
|
|
int64_t pts; |
81 |
|
|
|
82 |
|
|
FF_FILTER_FORWARD_STATUS_BACK_ALL(ctx->outputs[0], ctx); |
83 |
|
|
|
84 |
|
|
nb_samples = FFMIN(ff_inlink_queued_samples(ctx->inputs[0]), |
85 |
|
|
ff_inlink_queued_samples(ctx->inputs[1])); |
86 |
|
|
for (i = 0; i < ctx->nb_inputs && nb_samples > 0; i++) { |
87 |
|
|
if (s->frames[i]) |
88 |
|
|
continue; |
89 |
|
|
|
90 |
|
|
if (ff_inlink_check_available_samples(ctx->inputs[i], nb_samples) > 0) { |
91 |
|
|
ret = ff_inlink_consume_samples(ctx->inputs[i], nb_samples, nb_samples, &s->frames[i]); |
92 |
|
|
if (ret < 0) |
93 |
|
|
return ret; |
94 |
|
|
} |
95 |
|
|
} |
96 |
|
|
|
97 |
|
|
if (s->frames[0] && s->frames[1]) { |
98 |
|
|
AVFrame *out; |
99 |
|
|
int plane_samples; |
100 |
|
|
|
101 |
|
|
if (av_sample_fmt_is_planar(ctx->inputs[0]->format)) |
102 |
|
|
plane_samples = FFALIGN(s->frames[0]->nb_samples, s->samples_align); |
103 |
|
|
else |
104 |
|
|
plane_samples = FFALIGN(s->frames[0]->nb_samples * s->channels, s->samples_align); |
105 |
|
|
|
106 |
|
|
out = ff_get_audio_buffer(ctx->outputs[0], s->frames[0]->nb_samples); |
107 |
|
|
if (!out) |
108 |
|
|
return AVERROR(ENOMEM); |
109 |
|
|
|
110 |
|
|
out->pts = s->frames[0]->pts; |
111 |
|
|
|
112 |
|
|
if (av_get_packed_sample_fmt(ctx->inputs[0]->format) == AV_SAMPLE_FMT_FLT) { |
113 |
|
|
for (i = 0; i < s->planes; i++) { |
114 |
|
|
s->fdsp->vector_fmul((float *)out->extended_data[i], |
115 |
|
|
(const float *)s->frames[0]->extended_data[i], |
116 |
|
|
(const float *)s->frames[1]->extended_data[i], |
117 |
|
|
plane_samples); |
118 |
|
|
} |
119 |
|
|
} else { |
120 |
|
|
for (i = 0; i < s->planes; i++) { |
121 |
|
|
s->fdsp->vector_dmul((double *)out->extended_data[i], |
122 |
|
|
(const double *)s->frames[0]->extended_data[i], |
123 |
|
|
(const double *)s->frames[1]->extended_data[i], |
124 |
|
|
plane_samples); |
125 |
|
|
} |
126 |
|
|
} |
127 |
|
|
emms_c(); |
128 |
|
|
|
129 |
|
|
av_frame_free(&s->frames[0]); |
130 |
|
|
av_frame_free(&s->frames[1]); |
131 |
|
|
|
132 |
|
|
ret = ff_filter_frame(ctx->outputs[0], out); |
133 |
|
|
if (ret < 0) |
134 |
|
|
return ret; |
135 |
|
|
} |
136 |
|
|
|
137 |
|
|
if (!nb_samples) { |
138 |
|
|
for (i = 0; i < 2; i++) { |
139 |
|
|
if (ff_inlink_acknowledge_status(ctx->inputs[i], &status, &pts)) { |
140 |
|
|
ff_outlink_set_status(ctx->outputs[0], status, pts); |
141 |
|
|
return 0; |
142 |
|
|
} |
143 |
|
|
} |
144 |
|
|
} |
145 |
|
|
|
146 |
|
|
if (ff_outlink_frame_wanted(ctx->outputs[0])) { |
147 |
|
|
for (i = 0; i < 2; i++) { |
148 |
|
|
if (ff_inlink_queued_samples(ctx->inputs[i]) > 0) |
149 |
|
|
continue; |
150 |
|
|
ff_inlink_request_frame(ctx->inputs[i]); |
151 |
|
|
return 0; |
152 |
|
|
} |
153 |
|
|
} |
154 |
|
|
return 0; |
155 |
|
|
} |
156 |
|
|
|
157 |
|
|
static int config_output(AVFilterLink *outlink) |
158 |
|
|
{ |
159 |
|
|
AVFilterContext *ctx = outlink->src; |
160 |
|
|
AudioMultiplyContext *s = ctx->priv; |
161 |
|
|
AVFilterLink *inlink = ctx->inputs[0]; |
162 |
|
|
|
163 |
|
|
s->channels = inlink->channels; |
164 |
|
|
s->planes = av_sample_fmt_is_planar(inlink->format) ? inlink->channels : 1; |
165 |
|
|
s->samples_align = 16; |
166 |
|
|
|
167 |
|
|
return 0; |
168 |
|
|
} |
169 |
|
|
|
170 |
|
|
static av_cold int init(AVFilterContext *ctx) |
171 |
|
|
{ |
172 |
|
|
AudioMultiplyContext *s = ctx->priv; |
173 |
|
|
|
174 |
|
|
s->fdsp = avpriv_float_dsp_alloc(0); |
175 |
|
|
if (!s->fdsp) |
176 |
|
|
return AVERROR(ENOMEM); |
177 |
|
|
|
178 |
|
|
return 0; |
179 |
|
|
} |
180 |
|
|
|
181 |
|
|
static av_cold void uninit(AVFilterContext *ctx) |
182 |
|
|
{ |
183 |
|
|
AudioMultiplyContext *s = ctx->priv; |
184 |
|
|
av_freep(&s->fdsp); |
185 |
|
|
} |
186 |
|
|
|
187 |
|
|
static const AVFilterPad inputs[] = { |
188 |
|
|
{ |
189 |
|
|
.name = "multiply0", |
190 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
191 |
|
|
}, |
192 |
|
|
{ |
193 |
|
|
.name = "multiply1", |
194 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
195 |
|
|
}, |
196 |
|
|
{ NULL } |
197 |
|
|
}; |
198 |
|
|
|
199 |
|
|
static const AVFilterPad outputs[] = { |
200 |
|
|
{ |
201 |
|
|
.name = "default", |
202 |
|
|
.type = AVMEDIA_TYPE_AUDIO, |
203 |
|
|
.config_props = config_output, |
204 |
|
|
}, |
205 |
|
|
{ NULL } |
206 |
|
|
}; |
207 |
|
|
|
208 |
|
|
AVFilter ff_af_amultiply = { |
209 |
|
|
.name = "amultiply", |
210 |
|
|
.description = NULL_IF_CONFIG_SMALL("Multiply two audio streams."), |
211 |
|
|
.priv_size = sizeof(AudioMultiplyContext), |
212 |
|
|
.init = init, |
213 |
|
|
.uninit = uninit, |
214 |
|
|
.activate = activate, |
215 |
|
|
.query_formats = query_formats, |
216 |
|
|
.inputs = inputs, |
217 |
|
|
.outputs = outputs, |
218 |
|
|
}; |