68 lines
1.6 KiB
C++
68 lines
1.6 KiB
C++
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#pragma once
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#include <media-io/audio-resampler.h>
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#include <obs-module.h>
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#include <functional>
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#include <string>
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class resampler_obj {
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audio_resampler_t *resampler = nullptr;
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public:
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inline ~resampler_obj()
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{
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audio_resampler_destroy(resampler);
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}
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inline bool reset(const resample_info &dst, const resample_info &src)
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{
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audio_resampler_destroy(resampler);
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resampler = audio_resampler_create(&dst, &src);
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return !!resampler;
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}
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inline operator audio_resampler_t*() {return resampler;}
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};
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/* ------------------------------------------------------------------------- */
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typedef std::function<void (const std::string &)> captions_cb;
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#define captions_error(s) std::string(obs_module_text("Captions.Error." ## s))
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#define CAPTIONS_ERROR_GENERIC_FAIL captions_error("GenericFail")
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/* ------------------------------------------------------------------------- */
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class captions_handler {
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captions_cb cb;
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resampler_obj resampler;
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protected:
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inline void callback(const std::string &text)
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{
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cb(text);
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}
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virtual void pcm_data(const void *data, size_t frames)=0;
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/* always resamples to 1 channel */
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bool reset_resampler(enum audio_format format, uint32_t sample_rate);
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public:
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/* throw std::string for errors shown to users */
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captions_handler(
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captions_cb callback,
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enum audio_format format,
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uint32_t sample_rate);
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virtual ~captions_handler() {}
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void push_audio(const audio_data *audio);
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};
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/* ------------------------------------------------------------------------- */
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struct captions_handler_info {
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std::string (*name)(void);
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captions_handler *(*create)(captions_cb cb, const std::string &lang);
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};
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