#include "libavutil/avassert.h"
#include "libavutil/audio_fifo.h"
+#include "libavutil/avstring.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "audio.h"
#include "af_anlmdndsp.h"
-#define MAX_DIFF 11.f
#define WEIGHT_LUT_NBITS 20
#define WEIGHT_LUT_SIZE (1<<WEIGHT_LUT_NBITS)
float a;
int64_t pd;
int64_t rd;
+ float m;
int om;
float pdiff_lut_scale;
};
#define OFFSET(x) offsetof(AudioNLMeansContext, x)
-#define AF AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+#define AFT AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
static const AVOption anlmdn_options[] = {
- { "s", "set denoising strength", OFFSET(a), AV_OPT_TYPE_FLOAT, {.dbl=0.00001},0.00001, 10, AF },
- { "p", "set patch duration", OFFSET(pd), AV_OPT_TYPE_DURATION, {.i64=2000}, 1000, 100000, AF },
- { "r", "set research duration", OFFSET(rd), AV_OPT_TYPE_DURATION, {.i64=6000}, 2000, 300000, AF },
- { "o", "set output mode", OFFSET(om), AV_OPT_TYPE_INT, {.i64=OUT_MODE}, 0, NB_MODES-1, AF, "mode" },
- { "i", "input", 0, AV_OPT_TYPE_CONST, {.i64=IN_MODE}, 0, 0, AF, "mode" },
- { "o", "output", 0, AV_OPT_TYPE_CONST, {.i64=OUT_MODE}, 0, 0, AF, "mode" },
- { "n", "noise", 0, AV_OPT_TYPE_CONST, {.i64=NOISE_MODE},0, 0, AF, "mode" },
+ { "s", "set denoising strength", OFFSET(a), AV_OPT_TYPE_FLOAT, {.dbl=0.00001},0.00001, 10, AFT },
+ { "p", "set patch duration", OFFSET(pd), AV_OPT_TYPE_DURATION, {.i64=2000}, 1000, 100000, AFT },
+ { "r", "set research duration", OFFSET(rd), AV_OPT_TYPE_DURATION, {.i64=6000}, 2000, 300000, AFT },
+ { "o", "set output mode", OFFSET(om), AV_OPT_TYPE_INT, {.i64=OUT_MODE}, 0, NB_MODES-1, AFT, "mode" },
+ { "i", "input", 0, AV_OPT_TYPE_CONST, {.i64=IN_MODE}, 0, 0, AFT, "mode" },
+ { "o", "output", 0, AV_OPT_TYPE_CONST, {.i64=OUT_MODE}, 0, 0, AFT, "mode" },
+ { "n", "noise", 0, AV_OPT_TYPE_CONST, {.i64=NOISE_MODE},0, 0, AFT, "mode" },
+ { "m", "set smooth factor", OFFSET(m), AV_OPT_TYPE_FLOAT, {.dbl=11.}, 1, 15, AFT },
{ NULL }
};
ff_anlmdn_init_x86(dsp);
}
-static int config_output(AVFilterLink *outlink)
+static int config_filter(AVFilterContext *ctx)
{
- AVFilterContext *ctx = outlink->src;
AudioNLMeansContext *s = ctx->priv;
- int ret;
+ AVFilterLink *outlink = ctx->outputs[0];
+ int newK, newS, newH, newN;
+ AVFrame *new_in, *new_cache;
- s->K = av_rescale(s->pd, outlink->sample_rate, AV_TIME_BASE);
- s->S = av_rescale(s->rd, outlink->sample_rate, AV_TIME_BASE);
+ newK = av_rescale(s->pd, outlink->sample_rate, AV_TIME_BASE);
+ newS = av_rescale(s->rd, outlink->sample_rate, AV_TIME_BASE);
- s->eof_left = -1;
- s->pts = AV_NOPTS_VALUE;
- s->H = s->K * 2 + 1;
- s->N = s->H + (s->K + s->S) * 2;
+ newH = newK * 2 + 1;
+ newN = newH + (newK + newS) * 2;
- av_log(ctx, AV_LOG_DEBUG, "K:%d S:%d H:%d N:%d\n", s->K, s->S, s->H, s->N);
+ av_log(ctx, AV_LOG_DEBUG, "K:%d S:%d H:%d N:%d\n", newK, newS, newH, newN);
- av_frame_free(&s->in);
- av_frame_free(&s->cache);
- s->in = ff_get_audio_buffer(outlink, s->N);
- if (!s->in)
+ if (!s->cache || s->cache->nb_samples < newS * 2) {
+ new_cache = ff_get_audio_buffer(outlink, newS * 2);
+ if (new_cache) {
+ av_frame_free(&s->cache);
+ s->cache = new_cache;
+ } else {
+ return AVERROR(ENOMEM);
+ }
+ }
+ if (!s->cache)
return AVERROR(ENOMEM);
- s->cache = ff_get_audio_buffer(outlink, s->S * 2);
- if (!s->cache)
+ s->pdiff_lut_scale = 1.f / s->m * WEIGHT_LUT_SIZE;
+ for (int i = 0; i < WEIGHT_LUT_SIZE; i++) {
+ float w = -i / s->pdiff_lut_scale;
+
+ s->weight_lut[i] = expf(w);
+ }
+
+ if (!s->in || s->in->nb_samples < newN) {
+ new_in = ff_get_audio_buffer(outlink, newN);
+ if (new_in) {
+ av_frame_free(&s->in);
+ s->in = new_in;
+ } else {
+ return AVERROR(ENOMEM);
+ }
+ }
+ if (!s->in)
return AVERROR(ENOMEM);
+ s->K = newK;
+ s->S = newS;
+ s->H = newH;
+ s->N = newN;
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AudioNLMeansContext *s = ctx->priv;
+ int ret;
+
+ s->eof_left = -1;
+ s->pts = AV_NOPTS_VALUE;
+
+ ret = config_filter(ctx);
+ if (ret < 0)
+ return ret;
+
s->fifo = av_audio_fifo_alloc(outlink->format, outlink->channels, s->N);
if (!s->fifo)
return AVERROR(ENOMEM);
if (ret < 0)
return ret;
- s->pdiff_lut_scale = 1.f / MAX_DIFF * WEIGHT_LUT_SIZE;
- for (int i = 0; i < WEIGHT_LUT_SIZE; i++) {
- float w = -i / s->pdiff_lut_scale;
-
- s->weight_lut[i] = expf(w);
- }
-
ff_anlmdn_init(&s->dsp);
return 0;
float *cache = (float *)s->cache->extended_data[ch];
const float sw = (65536.f / (4 * K + 2)) / sqrtf(s->a);
float *dst = (float *)out->extended_data[ch] + s->offset;
+ const float smooth = s->m;
for (int i = S; i < s->H + S; i++) {
float P = 0.f, Q = 0.f;
unsigned weight_lut_idx;
float w;
- av_assert2(distance >= 0.f);
+ if (distance < 0.f) {
+ cache[j] = 0.f;
+ continue;
+ }
w = distance * sw;
- if (w >= MAX_DIFF)
+ if (w >= smooth)
continue;
weight_lut_idx = w * s->pdiff_lut_scale;
av_assert2(weight_lut_idx < WEIGHT_LUT_SIZE);
out->nb_samples = FFMIN(s->eof_left, s->offset);
s->eof_left -= out->nb_samples;
}
- s->pts += s->offset;
+ s->pts += av_rescale_q(s->offset, (AVRational){1, outlink->sample_rate}, outlink->time_base);
return ff_filter_frame(outlink, out);
}
if (s->eof_left < 0)
s->eof_left = av_audio_fifo_size(s->fifo) - (s->S + s->K);
- if (s->eof_left < 0)
+ if (s->eof_left <= 0)
return AVERROR_EOF;
in = ff_get_audio_buffer(outlink, s->H);
if (!in)
return ret;
}
+static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
+ char *res, int res_len, int flags)
+{
+ int ret;
+
+ ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
+ if (ret < 0)
+ return ret;
+
+ ret = config_filter(ctx);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static av_cold void uninit(AVFilterContext *ctx)
{
AudioNLMeansContext *s = ctx->priv;
{ NULL }
};
-AVFilter ff_af_anlmdn = {
+const AVFilter ff_af_anlmdn = {
.name = "anlmdn",
.description = NULL_IF_CONFIG_SMALL("Reduce broadband noise from stream using Non-Local Means."),
.query_formats = query_formats,
.uninit = uninit,
.inputs = inputs,
.outputs = outputs,
+ .process_command = process_command,
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
AVFILTER_FLAG_SLICE_THREADS,
};
projects / ffmpeg / blobdiff