60 lines
1000 B
C++
60 lines
1000 B
C++
#ifndef TEMPOPROCESSOR_H
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#define TEMPOPROCESSOR_H
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#ifdef __MINGW32__
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#ifndef __USE_MINGW_ANSI_STDIO
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#define __USE_MINGW_ANSI_STDIO
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#endif
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#endif
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#include <inttypes.h>
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extern "C" {
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#include <libavfilter/avfilter.h>
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}
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#include "render/audioparams.h"
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class TempoProcessor
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{
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public:
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TempoProcessor();
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bool IsOpen() const;
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const double& GetSpeed() const;
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bool Open(const AudioRenderingParams& params, const double &speed);
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void Push(const char *data, int length);
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int Pull(char* data, int max_length);
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void Close();
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private:
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static AVFilterContext* CreateTempoFilter(AVFilterGraph *graph, AVFilterContext *link, const double& tempo);
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AVFilterGraph* filter_graph_;
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AVFilterContext* buffersrc_ctx_;
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AVFilterContext* buffersink_ctx_;
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AVFrame* processed_frame_;
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int processed_frame_byte_index_;
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int processed_frame_max_bytes_;
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AudioRenderingParams params_;
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int64_t timestamp_;
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double speed_;
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bool open_;
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bool flushed_;
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};
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#endif // TEMPOPROCESSOR_H
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