95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
#ifndef INCLUDED_AUDIOIO_MP3_H
|
|
#define INCLUDED_AUDIOIO_MP3_H
|
|
|
|
#include <string>
|
|
#include <cstdio>
|
|
#include "audioio-buffered.h"
|
|
#include "audioio-forked-stream.h"
|
|
#include "sample-specs.h"
|
|
|
|
/**
|
|
* Interface for mp3 decoders and encoders that support
|
|
* input/output using standard streams. Defaults to
|
|
* mpg123 and lame.
|
|
* @author Kai Vehmanen
|
|
*/
|
|
class MP3FILE : public AUDIO_IO_BUFFERED,
|
|
public AUDIO_IO_FORKED_STREAM {
|
|
|
|
private:
|
|
|
|
static std::string conf_input_cmd;
|
|
static std::string conf_output_cmd;
|
|
static long int conf_default_output_bitrate;
|
|
|
|
public:
|
|
|
|
static void set_input_cmd(const std::string& value);
|
|
static void set_output_cmd(const std::string& value);
|
|
|
|
public:
|
|
|
|
MP3FILE (const std::string& name = "");
|
|
virtual ~MP3FILE(void);
|
|
|
|
virtual MP3FILE* clone(void) const { return new MP3FILE(*this); }
|
|
virtual MP3FILE* new_expr(void) const { return new MP3FILE(*this); }
|
|
|
|
virtual std::string name(void) const { return("Mp3 stream"); }
|
|
virtual std::string description(void) const { return("Interface for mp3 decoders and encoders that support input/output using standard streams."); }
|
|
virtual std::string parameter_names(void) const { return("label,bitrate"); }
|
|
virtual bool locked_audio_format(void) const { return(true); }
|
|
|
|
virtual int supported_io_modes(void) const { return(io_read | io_write); }
|
|
virtual bool supports_seeking(void) const { return io_mode() == io_read; }
|
|
virtual bool supports_seeking_sample_accurate(void) const { return false; }
|
|
|
|
virtual void open(void) throw(AUDIO_IO::SETUP_ERROR &);
|
|
virtual void close(void);
|
|
|
|
virtual long int read_samples(void* target_buffer, long int samples);
|
|
virtual void write_samples(void* target_buffer, long int samples);
|
|
|
|
virtual bool finished(void) const { return finished_rep; }
|
|
virtual SAMPLE_SPECS::sample_pos_t seek_position(SAMPLE_SPECS::sample_pos_t pos);
|
|
|
|
virtual void set_parameter(int param, std::string value);
|
|
virtual std::string get_parameter(int param) const;
|
|
|
|
virtual void start_io(void);
|
|
virtual void stop_io(void);
|
|
|
|
protected:
|
|
|
|
/* functions called by AUDIO_IO_FORKED_STREAM that require
|
|
* the use of AUDIO_IO methods */
|
|
|
|
virtual bool do_supports_seeking(void) const { return supports_seeking(); }
|
|
virtual void do_set_position_in_samples(SAMPLE_SPECS::sample_pos_t pos) { set_position_in_samples(pos); }
|
|
|
|
private:
|
|
|
|
bool finished_rep;
|
|
bool triggered_rep;
|
|
int pid_of_child_rep;
|
|
long pcm_rep;
|
|
long int bytes_rep;
|
|
long int bitrate_rep;
|
|
SAMPLE_SPECS::sample_pos_t last_position_rep;
|
|
int filedes_rep;
|
|
FILE* filehandle_rep;
|
|
bool mono_input_rep;
|
|
|
|
void process_mono_fix(char* target_buffer, long int bytes_rep);
|
|
void get_mp3_params(const std::string& fname) throw(AUDIO_IO::SETUP_ERROR&);
|
|
|
|
// MP3FILE(const MP3FILE& x) { }
|
|
MP3FILE& operator=(const MP3FILE& x) { return *this; }
|
|
|
|
|
|
void fork_input_process(void);
|
|
void fork_output_process(void);
|
|
};
|
|
|
|
#endif
|