| @@ -18,6 +18,8 @@ · 17 unmodified lines |
| 18 | 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | 19 | */ |
| 20 | 20 | |
| 21 | +#include <float.h> |
| 22 | + |
| 21 | 23 | #include "libavutil/channel_layout.h" |
| 22 | 24 | #include "libavutil/common.h" |
| 23 | 25 | |
| @@ -27,6 +29,8 @@ · 3 unmodified lines |
| 27 | 29 | |
| 28 | 30 | typedef struct AudioSDRContext { |
| 29 | 31 | int channels; |
| 32 | + uint64_t nb_samples; |
| 33 | + double max; |
| 30 | 34 | double *sum_u; |
| 31 | 35 | double *sum_uv; |
| 32 | 36 | |
| @@ -67,6 +71,34 @@ static int sdr_##name(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)\ · 34 unmodified lines |
| 67 | 71 | SDR_FILTER(fltp, float) |
| 68 | 72 | SDR_FILTER(dblp, double) |
| 69 | 73 | |
| 74 | +#define PSNR_FILTER(name, type) \ |
| 75 | +static int psnr_##name(AVFilterContext *ctx, void *arg, int jobnr,int nb_jobs)\ |
| 76 | +{ \ |
| 77 | + AudioSDRContext *s = ctx->priv; \ |
| 78 | + AVFrame *u = s->cache[0]; \ |
| 79 | + AVFrame *v = s->cache[1]; \ |
| 80 | + const int channels = u->ch_layout.nb_channels; \ |
| 81 | + const int start = (channels * jobnr) / nb_jobs; \ |
| 82 | + const int end = (channels * (jobnr+1)) / nb_jobs; \ |
| 83 | + const int nb_samples = u->nb_samples; \ |
| 84 | + \ |
| 85 | + for (int ch = start; ch < end; ch++) { \ |
| 86 | + const type *const us = (type *)u->extended_data[ch]; \ |
| 87 | + const type *const vs = (type *)v->extended_data[ch]; \ |
| 88 | + double sum_uv = 0.; \ |
| 89 | + \ |
| 90 | + for (int n = 0; n < nb_samples; n++) \ |
| 91 | + sum_uv += (us[n] - vs[n]) * (us[n] - vs[n]); \ |
| 92 | + \ |
| 93 | + s->sum_uv[ch] += sum_uv; \ |
| 94 | + } \ |
| 95 | + \ |
| 96 | + return 0; \ |
| 97 | +} |
| 98 | + |
| 99 | +PSNR_FILTER(fltp, float) |
| 100 | +PSNR_FILTER(dblp, double) |
| 101 | + |
| 70 | 102 | static int activate(AVFilterContext *ctx) |
| 71 | 103 | { |
| 72 | 104 | AudioSDRContext *s = ctx->priv; |
| @@ -97,6 +129,7 @@ static int activate(AVFilterContext *ctx) · 24 unmodified lines |
| 97 | 129 | out = s->cache[0]; |
| 98 | 130 | s->cache[0] = NULL; |
| 99 | 131 | |
| 132 | + s->nb_samples += available; |
| 100 | 133 | return ff_filter_frame(outlink, out); |
| 101 | 134 | } |
| 102 | 135 | |
| @@ -126,7 +159,12 @@ static int config_output(AVFilterLink *outlink) · 23 unmodified lines |
| 126 | 159 | AudioSDRContext *s = ctx->priv; |
| 127 | 160 | |
| 128 | 161 | s->channels = inlink->ch_layout.nb_channels; |
| 129 | | − s->filter = inlink->format == AV_SAMPLE_FMT_FLTP ? sdr_fltp : sdr_dblp; |
| 162 | + |
| 163 | + if (!strcmp(ctx->filter->name, "asdr")) |
| 164 | + s->filter = inlink->format == AV_SAMPLE_FMT_FLTP ? sdr_fltp : sdr_dblp; |
| 165 | + else |
| 166 | + s->filter = inlink->format == AV_SAMPLE_FMT_FLTP ? psnr_fltp : psnr_dblp; |
| 167 | + s->max = inlink->format == AV_SAMPLE_FMT_FLTP ? FLT_MAX : DBL_MAX; |
| 130 | 168 | |
| 131 | 169 | s->sum_u = av_calloc(outlink->ch_layout.nb_channels, sizeof(*s->sum_u)); |
| 132 | 170 | s->sum_uv = av_calloc(outlink->ch_layout.nb_channels, sizeof(*s->sum_uv)); |
| @@ -140,8 +178,16 @@ static av_cold void uninit(AVFilterContext *ctx) · 7 unmodified lines |
| 140 | 178 | { |
| 141 | 179 | AudioSDRContext *s = ctx->priv; |
| 142 | 180 | |
| 143 | | − for (int ch = 0; ch < s->channels; ch++) |
| 144 | | − av_log(ctx, AV_LOG_INFO, "SDR ch%d: %g dB\n", ch, 20. * log10(s->sum_u[ch] / s->sum_uv[ch])); |
| 181 | + if (!strcmp(ctx->filter->name, "asdr")) { |
| 182 | + for (int ch = 0; ch < s->channels; ch++) |
| 183 | + av_log(ctx, AV_LOG_INFO, "SDR ch%d: %g dB\n", ch, 20. * log10(s->sum_u[ch] / s->sum_uv[ch])); |
| 184 | + } else { |
| 185 | + for (int ch = 0; ch < s->channels; ch++) { |
| 186 | + double psnr = s->sum_uv[ch] > 0.0 ? 2.0 * log(s->max) - log(s->nb_samples / s->sum_uv[ch]) : INFINITY; |
| 187 | + |
| 188 | + av_log(ctx, AV_LOG_INFO, "PSNR ch%d: %g dB\n", ch, psnr); |
| 189 | + } |
| 190 | + } |
| 145 | 191 | |
| 146 | 192 | av_frame_free(&s->cache[0]); |
| 147 | 193 | av_frame_free(&s->cache[1]); |
| @@ -183,3 +229,18 @@ const AVFilter ff_af_asdr = { · 35 unmodified lines |
| 183 | 229 | FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP, |
| 184 | 230 | AV_SAMPLE_FMT_DBLP), |
| 185 | 231 | }; |
| 232 | + |
| 233 | +const AVFilter ff_af_apsnr = { |
| 234 | + .name = "apsnr", |
| 235 | + .description = NULL_IF_CONFIG_SMALL("Measure Audio Peak Signal-to-Noise Ratio."), |
| 236 | + .priv_size = sizeof(AudioSDRContext), |
| 237 | + .activate = activate, |
| 238 | + .uninit = uninit, |
| 239 | + .flags = AVFILTER_FLAG_METADATA_ONLY | |
| 240 | + AVFILTER_FLAG_SLICE_THREADS | |
| 241 | + AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, |
| 242 | + FILTER_INPUTS(inputs), |
| 243 | + FILTER_OUTPUTS(outputs), |
| 244 | + FILTER_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP, |
| 245 | + AV_SAMPLE_FMT_DBLP), |
| 246 | +}; |