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avfilter/avf_showcwt: simplify cache handling

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This commit is contained in:
Paul B Mahol 2023-07-10 11:00:24 +02:00
parent 2c4fa968b6
commit 587189cdb9
1 changed files with 14 additions and 25 deletions
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39
libavfilter/avf_showcwt.c
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@ -85,7 +85,7 @@ typedef struct ShowCWTContext {
unsigned *index;
int *kernel_start;
int *kernel_stop;
AVFrame *cache[2];
AVFrame *cache;
AVFrame *outpicref;
AVFrame *fft_in;
AVFrame *fft_out;
@ -168,8 +168,7 @@ static av_cold void uninit(AVFilterContext *ctx)
av_freep(&s->index);
av_frame_free(&s->kernel);
av_frame_free(&s->cache[0]);
av_frame_free(&s->cache[1]);
av_frame_free(&s->cache);
av_frame_free(&s->outpicref);
av_frame_free(&s->fft_in);
av_frame_free(&s->fft_out);
@ -280,32 +279,25 @@ static int run_channel_cwt_prepare(AVFilterContext *ctx, void *arg, int jobnr, i
ShowCWTContext *s = ctx->priv;
const int hop_size = s->hop_size;
AVFrame *fin = arg;
float *cache0 = (float *)s->cache[0]->extended_data[ch];
float *cache = (float *)s->cache[1]->extended_data[ch];
AVComplexFloat *cache = (AVComplexFloat *)s->cache->extended_data[ch];
AVComplexFloat *src = (AVComplexFloat *)s->fft_in->extended_data[ch];
AVComplexFloat *dst = (AVComplexFloat *)s->fft_out->extended_data[ch];
if (fin) {
const int offset = s->hop_index;
const float *input = (const float *)fin->extended_data[ch];
const int offset = s->input_padding_size - fin->nb_samples;
memcpy(&cache[offset], input,
fin->nb_samples * sizeof(float));
memmove(cache, cache + fin->nb_samples, sizeof(*cache) * offset);
for (int n = 0; n < fin->nb_samples; n++) {
cache[offset + n].re = input[n];
cache[offset + n].im = 0.f;
}
}
if (fin == NULL) {
memset(&cache[s->hop_index], 0,
(hop_size - s->hop_index) * sizeof(float));
} else if (s->hop_index + fin->nb_samples < hop_size) {
if (fin && s->hop_index + fin->nb_samples < hop_size)
return 0;
}
for (int n = 0; n < hop_size; n++) {
src[n].re = cache0[n];
src[n].im = 0.f;
src[n + hop_size].re = cache[n];
src[n + hop_size].im = 0.f;
}
memcpy(src, cache, sizeof(*src) * s->input_padding_size);
s->tx_fn(s->fft[jobnr], dst, src, sizeof(*src));
@ -630,8 +622,7 @@ static int config_output(AVFilterLink *outlink)
s->outpicref = ff_get_video_buffer(outlink, outlink->w, outlink->h);
s->fft_in = ff_get_audio_buffer(inlink, s->fft_in_size * 2);
s->fft_out = ff_get_audio_buffer(inlink, s->fft_out_size * 2);
s->cache[0] = ff_get_audio_buffer(inlink, s->hop_size);
s->cache[1] = ff_get_audio_buffer(inlink, s->hop_size);
s->cache = ff_get_audio_buffer(inlink, s->fft_in_size * 2);
s->ch_out = ff_get_audio_buffer(inlink, s->frequency_band_count * 2 * s->ihop_size);
s->ifft_in = av_frame_alloc();
s->ifft_out = av_frame_alloc();
@ -641,7 +632,7 @@ static int config_output(AVFilterLink *outlink)
s->kernel_stop = av_calloc(s->frequency_band_count, sizeof(*s->kernel_stop));
if (!s->outpicref || !s->fft_in || !s->fft_out ||
!s->ifft_in || !s->ifft_out || !s->kernel_start || !s->kernel_stop ||
!s->frequency_band || !s->kernel || !s->cache[0] || !s->cache[1] || !s->index)
!s->frequency_band || !s->kernel || !s->cache || !s->index)
return AVERROR(ENOMEM);
s->ifft_in->format = inlink->format;
@ -983,10 +974,8 @@ static int activate(AVFilterContext *ctx)
}
if (s->hop_index >= s->hop_size || s->ihop_index > 0) {
if (s->hop_index) {
FFSWAP(AVFrame *, s->cache[0], s->cache[1]);
if (s->hop_index)
s->hop_index = 0;
}
for (int ch = 0; ch < s->nb_channels && s->ihop_index == 0; ch++) {
ff_filter_execute(ctx, run_channel_cwt, (void *)&ch, NULL,