FFmpeg  4.0
avf_aphasemeter.c
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1 /*
2  * Copyright (c) 2015 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 /**
22  * @file
23  * audio to video multimedia aphasemeter filter
24  */
25 
26 #include "libavutil/avassert.h"
28 #include "libavutil/intreadwrite.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/parseutils.h"
31 #include "avfilter.h"
32 #include "formats.h"
33 #include "audio.h"
34 #include "video.h"
35 #include "internal.h"
36 
37 typedef struct AudioPhaseMeterContext {
38  const AVClass *class;
40  int do_video;
41  int w, h;
43  int contrast[4];
48 
49 #define OFFSET(x) offsetof(AudioPhaseMeterContext, x)
50 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
51 
52 static const AVOption aphasemeter_options[] = {
53  { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
54  { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
55  { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
56  { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
57  { "rc", "set red contrast", OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=2}, 0, 255, FLAGS },
58  { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=7}, 0, 255, FLAGS },
59  { "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=1}, 0, 255, FLAGS },
60  { "mpc", "set median phase color", OFFSET(mpc_str), AV_OPT_TYPE_STRING, {.str = "none"}, 0, 0, FLAGS },
61  { "video", "set video output", OFFSET(do_video), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, FLAGS },
62  { NULL }
63 };
64 
65 AVFILTER_DEFINE_CLASS(aphasemeter);
66 
68 {
72  AVFilterLink *inlink = ctx->inputs[0];
73  AVFilterLink *outlink = ctx->outputs[0];
75  static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
76  int ret;
77 
78  formats = ff_make_format_list(sample_fmts);
79  if ((ret = ff_formats_ref (formats, &inlink->out_formats )) < 0 ||
80  (ret = ff_formats_ref (formats, &outlink->in_formats )) < 0 ||
81  (ret = ff_add_channel_layout (&layout, AV_CH_LAYOUT_STEREO )) < 0 ||
82  (ret = ff_channel_layouts_ref (layout , &inlink->out_channel_layouts)) < 0 ||
83  (ret = ff_channel_layouts_ref (layout , &outlink->in_channel_layouts)) < 0)
84  return ret;
85 
86  formats = ff_all_samplerates();
87  if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0 ||
88  (ret = ff_formats_ref(formats, &outlink->in_samplerates)) < 0)
89  return ret;
90 
91  if (s->do_video) {
92  AVFilterLink *outlink = ctx->outputs[1];
93 
94  formats = ff_make_format_list(pix_fmts);
95  if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
96  return ret;
97  }
98 
99  return 0;
100 }
101 
102 static int config_input(AVFilterLink *inlink)
103 {
104  AVFilterContext *ctx = inlink->dst;
105  AudioPhaseMeterContext *s = ctx->priv;
106  int nb_samples;
107 
108  if (s->do_video) {
109  nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
110  inlink->partial_buf_size =
111  inlink->min_samples =
112  inlink->max_samples = nb_samples;
113  }
114 
115  return 0;
116 }
117 
118 static int config_video_output(AVFilterLink *outlink)
119 {
120  AVFilterContext *ctx = outlink->src;
121  AudioPhaseMeterContext *s = ctx->priv;
122 
123  outlink->w = s->w;
124  outlink->h = s->h;
125  outlink->sample_aspect_ratio = (AVRational){1,1};
126  outlink->frame_rate = s->frame_rate;
127 
128  if (!strcmp(s->mpc_str, "none"))
129  s->draw_median_phase = 0;
130  else if (av_parse_color(s->mpc, s->mpc_str, -1, ctx) >= 0)
131  s->draw_median_phase = 1;
132  else
133  return AVERROR(EINVAL);
134 
135  return 0;
136 }
137 
138 static inline int get_x(float phase, int w)
139 {
140  return (phase + 1.) / 2. * (w - 1);
141 }
142 
143 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
144 {
145  AVFilterContext *ctx = inlink->dst;
146  AudioPhaseMeterContext *s = ctx->priv;
147  AVFilterLink *outlink = s->do_video ? ctx->outputs[1] : NULL;
148  AVFilterLink *aoutlink = ctx->outputs[0];
149  AVDictionary **metadata;
150  const int rc = s->contrast[0];
151  const int gc = s->contrast[1];
152  const int bc = s->contrast[2];
153  float fphase = 0;
154  AVFrame *out;
155  uint8_t *dst;
156  int i;
157 
158  if (s->do_video && (!s->out || s->out->width != outlink->w ||
159  s->out->height != outlink->h)) {
160  av_frame_free(&s->out);
161  s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
162  if (!s->out) {
163  av_frame_free(&in);
164  return AVERROR(ENOMEM);
165  }
166 
167  out = s->out;
168  for (i = 0; i < outlink->h; i++)
169  memset(out->data[0] + i * out->linesize[0], 0, outlink->w * 4);
170  } else if (s->do_video) {
171  out = s->out;
172  for (i = outlink->h - 1; i >= 10; i--)
173  memmove(out->data[0] + (i ) * out->linesize[0],
174  out->data[0] + (i-1) * out->linesize[0],
175  outlink->w * 4);
176  for (i = 0; i < outlink->w; i++)
177  AV_WL32(out->data[0] + i * 4, 0);
178  }
179 
180  for (i = 0; i < in->nb_samples; i++) {
181  const float *src = (float *)in->data[0] + i * 2;
182  const float f = src[0] * src[1] / (src[0]*src[0] + src[1] * src[1]) * 2;
183  const float phase = isnan(f) ? 1 : f;
184  const int x = get_x(phase, s->w);
185 
186  if (s->do_video) {
187  dst = out->data[0] + x * 4;
188  dst[0] = FFMIN(255, dst[0] + rc);
189  dst[1] = FFMIN(255, dst[1] + gc);
190  dst[2] = FFMIN(255, dst[2] + bc);
191  dst[3] = 255;
192  }
193  fphase += phase;
194  }
195  fphase /= in->nb_samples;
196 
197  if (s->do_video) {
198  if (s->draw_median_phase) {
199  dst = out->data[0] + get_x(fphase, s->w) * 4;
200  AV_WL32(dst, AV_RL32(s->mpc));
201  }
202 
203  for (i = 1; i < 10 && i < outlink->h; i++)
204  memcpy(out->data[0] + i * out->linesize[0], out->data[0], outlink->w * 4);
205  }
206 
207  metadata = &in->metadata;
208  if (metadata) {
209  uint8_t value[128];
210 
211  snprintf(value, sizeof(value), "%f", fphase);
212  av_dict_set(metadata, "lavfi.aphasemeter.phase", value, 0);
213  }
214 
215  if (s->do_video) {
216  s->out->pts = in->pts;
217  ff_filter_frame(outlink, av_frame_clone(s->out));
218  }
219  return ff_filter_frame(aoutlink, in);
220 }
221 
223 {
224  AudioPhaseMeterContext *s = ctx->priv;
225  int i;
226 
227  av_frame_free(&s->out);
228  for (i = 0; i < ctx->nb_outputs; i++)
229  av_freep(&ctx->output_pads[i].name);
230 }
231 
233 {
234  AudioPhaseMeterContext *s = ctx->priv;
235  AVFilterPad pad;
236 
237  pad = (AVFilterPad){
238  .name = av_strdup("out0"),
239  .type = AVMEDIA_TYPE_AUDIO,
240  };
241  if (!pad.name)
242  return AVERROR(ENOMEM);
243  ff_insert_outpad(ctx, 0, &pad);
244 
245  if (s->do_video) {
246  pad = (AVFilterPad){
247  .name = av_strdup("out1"),
248  .type = AVMEDIA_TYPE_VIDEO,
249  .config_props = config_video_output,
250  };
251  if (!pad.name)
252  return AVERROR(ENOMEM);
253  ff_insert_outpad(ctx, 1, &pad);
254  }
255 
256  return 0;
257 }
258 
259 static const AVFilterPad inputs[] = {
260  {
261  .name = "default",
262  .type = AVMEDIA_TYPE_AUDIO,
263  .config_props = config_input,
264  .filter_frame = filter_frame,
265  },
266  { NULL }
267 };
268 
270  .name = "aphasemeter",
271  .description = NULL_IF_CONFIG_SMALL("Convert input audio to phase meter video output."),
272  .init = init,
273  .uninit = uninit,
274  .query_formats = query_formats,
275  .priv_size = sizeof(AudioPhaseMeterContext),
276  .inputs = inputs,
277  .outputs = NULL,
278  .priv_class = &aphasemeter_class,
280 };
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
AVOption.
Definition: opt.h:246
AVFILTER_DEFINE_CLASS(aphasemeter)
Main libavfilter public API header.
static int get_x(float phase, int w)
static av_cold int init(AVFilterContext *ctx)
static int config_input(AVFilterLink *inlink)
static const AVOption aphasemeter_options[]
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define AV_CH_LAYOUT_STEREO
#define src
Definition: vp8dsp.c:254
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
static int query_formats(AVFilterContext *ctx)
const char * name
Pad name.
Definition: internal.h:60
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
int ff_channel_layouts_ref(AVFilterChannelLayouts *f, AVFilterChannelLayouts **ref)
Add *ref as a new reference to f.
Definition: formats.c:435
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
AVFilterPad * output_pads
array of output pads
Definition: avfilter.h:349
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
static int config_video_output(AVFilterLink *outlink)
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:311
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
static int flags
Definition: log.c:55
AVDictionary * metadata
metadata.
Definition: frame.h:505
#define AVFILTER_FLAG_DYNAMIC_OUTPUTS
The number of the filter outputs is not determined just by AVFilter.outputs.
Definition: avfilter.h:111
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, void *log_ctx)
Put the RGBA values that correspond to color_string in rgba_color.
Definition: parseutils.c:354
A filter pad used for either input or output.
Definition: internal.h:54
int width
Definition: frame.h:276
int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout)
Definition: formats.c:343
#define OFFSET(x)
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
unsigned nb_outputs
number of output pads
Definition: avfilter.h:351
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
void * priv
private data for use by the filter
Definition: avfilter.h:353
simple assert() macros that are a bit more flexible than ISO C assert().
#define FFMAX(a, b)
Definition: common.h:94
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
Definition: pixfmt.h:89
audio channel layout utility functions
#define FFMIN(a, b)
Definition: common.h:96
int ff_formats_ref(AVFilterFormats *f, AVFilterFormats **ref)
Add *ref as a new reference to formats.
Definition: formats.c:440
AVFormatContext * ctx
Definition: movenc.c:48
#define AV_RL32
Definition: intreadwrite.h:146
if(ret< 0)
Definition: vf_mcdeint.c:279
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:538
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
A list of supported channel layouts.
Definition: formats.h:85
#define FLAGS
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) #define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac) { } void ff_audio_convert_free(AudioConvert **ac) { if(! *ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);} AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map) { AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method !=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2) { ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc) { av_free(ac);return NULL;} return ac;} in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar) { ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar ? ac->channels :1;} else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;} int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in) { int use_generic=1;int len=in->nb_samples;int p;if(ac->dc) { av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (dithered)\", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
double value
Definition: eval.c:98
Describe the class of an AVClass context structure.
Definition: log.h:67
Filter definition.
Definition: avfilter.h:144
Rational number (pair of numerator and denominator).
Definition: rational.h:58
#define isnan(x)
Definition: libm.h:340
offset must point to AVRational
Definition: opt.h:236
const char * name
Filter name.
Definition: avfilter.h:148
#define snprintf
Definition: snprintf.h:34
offset must point to two consecutive integers
Definition: opt.h:233
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVFilterFormats * ff_all_samplerates(void)
Definition: formats.c:395
static const AVFilterPad inputs[]
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
A list of supported formats for one end of a filter link.
Definition: formats.h:64
uint64_t layout
An instance of a filter.
Definition: avfilter.h:338
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
int height
Definition: frame.h:276
#define av_freep(p)
static av_cold void uninit(AVFilterContext *ctx)
formats
Definition: signature.h:48
internal API functions
AVFilter ff_avf_aphasemeter
static int ff_insert_outpad(AVFilterContext *f, unsigned index, AVFilterPad *p)
Insert a new output pad for the filter.
Definition: internal.h:285
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:284
#define AV_WL32(p, v)
Definition: intreadwrite.h:426