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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 w, h;
42  int contrast[4];
47 
48 #define OFFSET(x) offsetof(AudioPhaseMeterContext, x)
49 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
50 
51 static const AVOption aphasemeter_options[] = {
52  { "rate", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
53  { "r", "set video rate", OFFSET(frame_rate), AV_OPT_TYPE_VIDEO_RATE, {.str="25"}, 0, INT_MAX, FLAGS },
54  { "size", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
55  { "s", "set video size", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, {.str="800x400"}, 0, 0, FLAGS },
56  { "rc", "set red contrast", OFFSET(contrast[0]), AV_OPT_TYPE_INT, {.i64=2}, 0, 255, FLAGS },
57  { "gc", "set green contrast", OFFSET(contrast[1]), AV_OPT_TYPE_INT, {.i64=7}, 0, 255, FLAGS },
58  { "bc", "set blue contrast", OFFSET(contrast[2]), AV_OPT_TYPE_INT, {.i64=1}, 0, 255, FLAGS },
59  { "mpc", "set median phase color", OFFSET(mpc_str), AV_OPT_TYPE_STRING, {.str = "none"}, 0, 0, FLAGS },
60  { NULL }
61 };
62 
63 AVFILTER_DEFINE_CLASS(aphasemeter);
64 
66 {
69  AVFilterLink *inlink = ctx->inputs[0];
70  AVFilterLink *outlink = ctx->outputs[0];
72  static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_RGBA, AV_PIX_FMT_NONE };
73  int ret;
74 
75  formats = ff_make_format_list(sample_fmts);
76  if ((ret = ff_formats_ref (formats, &inlink->out_formats )) < 0 ||
77  (ret = ff_add_channel_layout (&layout, AV_CH_LAYOUT_STEREO )) < 0 ||
78  (ret = ff_channel_layouts_ref (layout , &inlink->out_channel_layouts)) < 0)
79  return ret;
80 
81  formats = ff_all_samplerates();
82  if ((ret = ff_formats_ref(formats, &inlink->out_samplerates)) < 0)
83  return ret;
84 
85  formats = ff_make_format_list(pix_fmts);
86  if ((ret = ff_formats_ref(formats, &outlink->in_formats)) < 0)
87  return ret;
88 
89  return 0;
90 }
91 
92 static int config_input(AVFilterLink *inlink)
93 {
94  AVFilterContext *ctx = inlink->dst;
96  int nb_samples;
97 
98  nb_samples = FFMAX(1024, ((double)inlink->sample_rate / av_q2d(s->frame_rate)) + 0.5);
99  inlink->partial_buf_size =
100  inlink->min_samples =
101  inlink->max_samples = nb_samples;
102 
103  return 0;
104 }
105 
106 static int config_output(AVFilterLink *outlink)
107 {
108  AVFilterContext *ctx = outlink->src;
109  AudioPhaseMeterContext *s = ctx->priv;
110 
111  outlink->w = s->w;
112  outlink->h = s->h;
113  outlink->sample_aspect_ratio = (AVRational){1,1};
114  outlink->frame_rate = s->frame_rate;
115 
116  if (!strcmp(s->mpc_str, "none"))
117  s->draw_median_phase = 0;
118  else if (av_parse_color(s->mpc, s->mpc_str, -1, ctx) >= 0)
119  s->draw_median_phase = 1;
120  else
121  return AVERROR(EINVAL);
122 
123  return 0;
124 }
125 
126 static inline int get_x(float phase, int w)
127 {
128  return (phase + 1.) / 2. * (w - 1);
129 }
130 
131 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
132 {
133  AVFilterContext *ctx = inlink->dst;
134  AVFilterLink *outlink = ctx->outputs[0];
135  AudioPhaseMeterContext *s = ctx->priv;
136  AVDictionary **metadata;
137  const int rc = s->contrast[0];
138  const int gc = s->contrast[1];
139  const int bc = s->contrast[2];
140  float fphase = 0;
141  AVFrame *out;
142  uint8_t *dst;
143  int i;
144 
145  if (!s->out || s->out->width != outlink->w ||
146  s->out->height != outlink->h) {
147  av_frame_free(&s->out);
148  s->out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
149  if (!s->out) {
150  av_frame_free(&in);
151  return AVERROR(ENOMEM);
152  }
153 
154  out = s->out;
155  for (i = 0; i < outlink->h; i++)
156  memset(out->data[0] + i * out->linesize[0], 0, outlink->w * 4);
157  } else {
158  out = s->out;
159  for (i = outlink->h - 1; i >= 10; i--)
160  memmove(out->data[0] + (i ) * out->linesize[0],
161  out->data[0] + (i-1) * out->linesize[0],
162  outlink->w * 4);
163  for (i = 0; i < outlink->w; i++)
164  AV_WL32(out->data[0] + i * 4, 0);
165  }
166  s->out->pts = in->pts;
167 
168  for (i = 0; i < in->nb_samples; i++) {
169  const float *src = (float *)in->data[0] + i * 2;
170  const float f = src[0] * src[1] / (src[0]*src[0] + src[1] * src[1]) * 2;
171  const float phase = isnan(f) ? 1 : f;
172  const int x = get_x(phase, s->w);
173 
174  dst = out->data[0] + x * 4;
175  dst[0] = FFMIN(255, dst[0] + rc);
176  dst[1] = FFMIN(255, dst[1] + gc);
177  dst[2] = FFMIN(255, dst[2] + bc);
178  dst[3] = 255;
179  fphase += phase;
180  }
181  fphase /= in->nb_samples;
182 
183  if (s->draw_median_phase) {
184  dst = out->data[0] + get_x(fphase, s->w) * 4;
185  AV_WL32(dst, AV_RL32(s->mpc));
186  }
187 
188  for (i = 1; i < 10 && i < outlink->h; i++)
189  memcpy(out->data[0] + i * out->linesize[0], out->data[0], outlink->w * 4);
190 
191  metadata = avpriv_frame_get_metadatap(out);
192  if (metadata) {
193  uint8_t value[128];
194 
195  snprintf(value, sizeof(value), "%f", fphase);
196  av_dict_set(metadata, "lavfi.aphasemeter.phase", value, 0);
197  }
198 
199  av_frame_free(&in);
200  return ff_filter_frame(outlink, av_frame_clone(s->out));
201 }
202 
204 {
205  AudioPhaseMeterContext *s = ctx->priv;
206 
207  av_frame_free(&s->out);
208 }
209 
210 static const AVFilterPad inputs[] = {
211  {
212  .name = "default",
213  .type = AVMEDIA_TYPE_AUDIO,
214  .config_props = config_input,
215  .filter_frame = filter_frame,
216  },
217  { NULL }
218 };
219 
220 static const AVFilterPad outputs[] = {
221  {
222  .name = "default",
223  .type = AVMEDIA_TYPE_VIDEO,
224  .config_props = config_output,
225  },
226  { NULL }
227 };
228 
230  .name = "aphasemeter",
231  .description = NULL_IF_CONFIG_SMALL("Convert input audio to phase meter video output."),
232  .uninit = uninit,
233  .query_formats = query_formats,
234  .priv_size = sizeof(AudioPhaseMeterContext),
235  .inputs = inputs,
236  .outputs = outputs,
237  .priv_class = &aphasemeter_class,
238 };
#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:184
AVOption.
Definition: opt.h:245
AVFILTER_DEFINE_CLASS(aphasemeter)
Main libavfilter public API header.
static int get_x(float phase, int w)
static enum AVSampleFormat formats[]
Definition: avresample.c:163
static const AVFilterPad outputs[]
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:76
#define AV_CH_LAYOUT_STEREO
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:59
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:315
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:1189
uint8_t
#define av_cold
Definition: attributes.h:82
AVOptions.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
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:349
A filter pad used for either input or output.
Definition: internal.h:53
int width
width and height of the video frame
Definition: frame.h:236
static int config_output(AVFilterLink *outlink)
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:158
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:176
void * priv
private data for use by the filter
Definition: avfilter.h:322
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:94
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
GLsizei GLboolean const GLfloat * value
Definition: opengl_enc.c:109
AVFormatContext * ctx
Definition: movenc.c:48
#define src
Definition: vp9dsp.c:530
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
Definition: frame.c:480
A list of supported channel layouts.
Definition: formats.h:85
#define FLAGS
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
AVDictionary ** avpriv_frame_get_metadatap(AVFrame *frame)
Definition: frame.c:46
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineSET_CONV_FUNC_GROUP(ofmt, ifmt) staticvoidset_generic_function(AudioConvert *ac){}voidff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, intsample_rate, intapply_map){AudioConvert *ac;intin_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) returnNULL;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);returnNULL;}returnac;}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;}elseif(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;elseac->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);returnac;}intff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){intuse_generic=1;intlen=in->nb_samples;intp;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%dsamples-audio_convert:%sto%s(dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));returnff_convert_dither(ac-> in
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
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:235
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:232
misc parsing utilities
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:319
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
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:198
if(ret< 0)
Definition: vf_mcdeint.c:282
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:307
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:701
int height
Definition: frame.h:236
FILE * out
Definition: movenc.c:54
static av_cold void uninit(AVFilterContext *ctx)
internal API functions
AVFilter ff_avf_aphasemeter
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:241
#define AV_WL32(p, v)
Definition: intreadwrite.h:426