SrcAudioResample< input_t, output_t > Class Template Reference

#include <frame.h>

Inheritance diagram for SrcAudioResample< input_t, output_t >:

[legend]Collaboration diagram for SrcAudioResample< input_t, output_t >:

[legend]List of all members.

Public Member Functions
	SrcAudioResample (int converter)
	SrcAudioResample (int converter, double output_rate, bool isStreaming)
virtual	~SrcAudioResample ()
void	Resample (input_t *input, double input_rate, int channels, int samples)
Private Attributes
SRC_STATE *	state
SRC_DATA	data
float	input_buffer [BUFFER_LEN]
float	output_buffer [BUFFER_LEN]

template<class input_t, class output_t>
class SrcAudioResample< input_t, output_t >

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Constructor & Destructor Documentation

template<class input_t, class output_t> SrcAudioResample< input_t, output_t >::SrcAudioResample (  int  converter  )  [inline]

Definition at line 307 of file frame.h. : AudioResample<input_t,output_t>( 0 ) { SrcAudioResample( converter, 0 ); }

template<class input_t, class output_t> SrcAudioResample< input_t, output_t >::SrcAudioResample (  int  converter, double  output_rate, bool  isStreaming )  [inline]

Definition at line 311 of file frame.h. References SrcAudioResample< input_t, output_t >::data, SrcAudioResample< input_t, output_t >::input_buffer, SrcAudioResample< input_t, output_t >::output_buffer, and SrcAudioResample< input_t, output_t >::state. 00311 : 00312 AudioResample<input_t,output_t>( output_rate ) 00313 { 00314 int srcError = 0; 00315 00316 state = src_new( converter, 2, &srcError ); 00317 if ( srcError != 0 ) 00318 { 00319 cerr << "SRC: " << src_strerror( srcError ) << endl; 00320 } 00321 else 00322 { 00323 data.data_in = input_buffer; 00324 data.data_out = output_buffer; 00325 data.end_of_input = isStreaming ? 0 : 1; 00326 } 00327 } virtual ~SrcAudioResample()

template<class input_t, class output_t> virtual SrcAudioResample< input_t, output_t >::~SrcAudioResample (   )  [inline, virtual]

Definition at line 328 of file frame.h. References SrcAudioResample< input_t, output_t >::state. { src_delete( state ); }

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Member Function Documentation

template<class input_t, class output_t> void SrcAudioResample< input_t, output_t >::Resample (  input_t *  input, double  input_rate, int  channels, int  samples )  [inline, virtual]

Reimplemented from AudioResample< input_t, output_t >. Definition at line 332 of file frame.h. References BUFFER_LEN, SrcAudioResample< input_t, output_t >::data, SrcAudioResample< input_t, output_t >::input_buffer, AudioResample< input_t, output_t >::output, SrcAudioResample< input_t, output_t >::output_buffer, AudioResample< input_t, output_t >::output_rate, AudioResample< input_t, output_t >::size, and SrcAudioResample< input_t, output_t >::state. { for ( int i = 0; i < samples * channels; ++i ) input_buffer[ i ] = ( float ) input[ i ] / 32768.0; // Setup resampler data.input_frames = samples; data.output_frames = BUFFER_LEN / channels; data.src_ratio = this->output_rate / input_rate; // Resample int result = src_process ( state, &data ); if ( result != 0 ) cerr << "SRC: " << src_strerror( result ) << endl; this->size = data.output_frames_gen * channels * sizeof(output_t); // cerr << "Resample in samples " << samples << " out rate " << this->output_rate << " in rate " << input_rate << " src_ratio " << data.src_ratio << "out samples " << this->size/4 << endl; for ( int i = 0; i < data.output_frames_gen * channels; ++i ) { float sample = output_buffer[ i ]; if ( sample > 1.0 ) sample = 1.0; if ( sample < -1.0 ) sample = -1.0; if ( sample >= 0 ) this->output[ i ] = ( long int )( 32767.0 * sample ); else this->output[ i ] = ( long int )( 32768.0 * sample ); } }

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Member Data Documentation

template<class input_t, class output_t> SRC_DATA SrcAudioResample< input_t, output_t >::data [private]

Definition at line 366 of file frame.h. Referenced by SrcAudioResample< input_t, output_t >::Resample(), and SrcAudioResample< input_t, output_t >::SrcAudioResample().

template<class input_t, class output_t> float SrcAudioResample< input_t, output_t >::input_buffer[BUFFER_LEN] [private]

Definition at line 367 of file frame.h. Referenced by SrcAudioResample< input_t, output_t >::Resample(), and SrcAudioResample< input_t, output_t >::SrcAudioResample().

template<class input_t, class output_t> float SrcAudioResample< input_t, output_t >::output_buffer[BUFFER_LEN] [private]

Definition at line 368 of file frame.h. Referenced by SrcAudioResample< input_t, output_t >::Resample(), and SrcAudioResample< input_t, output_t >::SrcAudioResample().

template<class input_t, class output_t> SRC_STATE* SrcAudioResample< input_t, output_t >::state [private]

Definition at line 365 of file frame.h. Referenced by SrcAudioResample< input_t, output_t >::Resample(), SrcAudioResample< input_t, output_t >::SrcAudioResample(), and SrcAudioResample< input_t, output_t >::~SrcAudioResample().

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The documentation for this class was generated from the following file:

• frame.h

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