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@@ -223,6 +223,37 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *insamplesref) |
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return ret; |
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} |
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static int flush_frame(AVFilterLink *outlink, int final, AVFrame **outsamplesref_ret) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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AResampleContext *aresample = ctx->priv; |
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AVFilterLink *const inlink = outlink->src->inputs[0]; |
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AVFrame *outsamplesref; |
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int n_out = 4096; |
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int64_t pts; |
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outsamplesref = ff_get_audio_buffer(outlink, n_out); |
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*outsamplesref_ret = outsamplesref; |
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if (!outsamplesref) |
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return AVERROR(ENOMEM); |
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pts = swr_next_pts(aresample->swr, INT64_MIN); |
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pts = ROUNDED_DIV(pts, inlink->sample_rate); |
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n_out = swr_convert(aresample->swr, outsamplesref->extended_data, n_out, final ? NULL : (void*)outsamplesref->extended_data, 0); |
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if (n_out <= 0) { |
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av_frame_free(&outsamplesref); |
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return (n_out == 0) ? AVERROR_EOF : n_out; |
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} |
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outsamplesref->sample_rate = outlink->sample_rate; |
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outsamplesref->nb_samples = n_out; |
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outsamplesref->pts = pts; |
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return 0; |
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} |
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static int request_frame(AVFilterLink *outlink) |
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{ |
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AVFilterContext *ctx = outlink->src; |
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@@ -237,26 +268,9 @@ static int request_frame(AVFilterLink *outlink) |
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if (ret == AVERROR_EOF) { |
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AVFrame *outsamplesref; |
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int n_out = 4096; |
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int64_t pts; |
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outsamplesref = ff_get_audio_buffer(outlink, n_out); |
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if (!outsamplesref) |
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return AVERROR(ENOMEM); |
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pts = swr_next_pts(aresample->swr, INT64_MIN); |
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pts = ROUNDED_DIV(pts, inlink->sample_rate); |
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n_out = swr_convert(aresample->swr, outsamplesref->extended_data, n_out, 0, 0); |
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if (n_out <= 0) { |
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av_frame_free(&outsamplesref); |
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return (n_out == 0) ? AVERROR_EOF : n_out; |
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} |
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outsamplesref->sample_rate = outlink->sample_rate; |
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outsamplesref->nb_samples = n_out; |
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outsamplesref->pts = pts; |
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if ((ret = flush_frame(outlink, 1, &outsamplesref)) < 0) |
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return ret; |
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return ff_filter_frame(outlink, outsamplesref); |
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} |
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