Filter_chain Class Reference

#include <filter_chain.hpp>

Collaboration diagram for Filter_chain:

Public Member Functions
	Filter_chain (const Filter_chain &)=delete
	Filter_chain (struct module *parent)
	~Filter_chain ()
void	clear ()
bool	emplace_new (std::string_view cfg)
af_result_code	filter (struct audio_frame **frame)
struct module *	get_module ()
Filter_chain &	operator= (const Filter_chain &)=delete
void	push_back (struct audio_filter filter)
af_result_code	reconfigure (int bps, int ch_count, int sample_rate)

Private Attributes
int	bps = 0
int	ch_count = 0
std::vector< struct audio_filter >	filters
module_raii	mod
int	sample_rate = 0

Detailed Description

Definition at line 48 of file filter_chain.hpp.

Constructor & Destructor Documentation

Filter_chain() [1/2]

Filter_chain::Filter_chain

(

struct module *

parent

)

Definition at line 48 of file filter_chain.cpp.

                                                :
        mod(MODULE_CLASS_FILTER, parent, this) { }

Filter_chain() [2/2]

Filter_chain::Filter_chain ( const Filter_chain & )

delete

~Filter_chain()

Filter_chain::~Filter_chain

(

)

Definition at line 51 of file filter_chain.cpp.

                           {
        clear();
}

References clear().

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Member Function Documentation

clear()

void Filter_chain::clear

(

)

Definition at line 78 of file filter_chain.cpp.

                        {
        for(auto& i : filters){
                audio_filter_destroy(&i);
        }
}

References audio_filter_destroy(), and filters.

Referenced by ~Filter_chain().

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emplace_new()

bool Filter_chain::emplace_new

(

std::string_view

cfg

)

Definition at line 59 of file filter_chain.cpp.

                                                {
        std::string filter_name(tokenize(cfg, ':'));
        if(!cfg.empty() && cfg[0] == ':')
                cfg.remove_prefix(1);
        std::string config(cfg);
 
        struct audio_filter afilter;
        if(audio_filter_init(get_module(),
                                filter_name.c_str(),
                                config.c_str(),
                                &afilter) != AF_OK)
        {
                return false;
        }
 
        push_back(afilter);
        return true;
}

References AF_OK, audio_filter_init(), get_module(), push_back(), and tokenize().

Referenced by audio_init(), and filter().

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filter()

af_result_code Filter_chain::filter

(

struct audio_frame **

frame

)

Definition at line 84 of file filter_chain.cpp.

                                                             {
        struct message *msg;
        while ((msg = check_message(mod.get()))) {
                std::string_view text = ((msg_universal *) msg)->text;
 
                if(!emplace_new(text)) {
                        log_msg(LOG_LEVEL_ERROR, "Failed to init audio filter\n");
                        free_message(msg, new_response(RESPONSE_INT_SERV_ERR, nullptr));
                        continue;
                }
 
                free_message(msg, new_response(RESPONSE_OK, nullptr));
        }
 
        auto f = *frame;
        af_result_code res = reconfigure(f->bps, f->ch_count, f->sample_rate);
        if(res != AF_OK)
                return AF_MISCONFIGURED;
 
        for(auto& i : filters){
                res = audio_filter(&i, frame);
                if(res != AF_OK)
                        return res;
        }
 
        return res;
}

References AF_MISCONFIGURED, AF_OK, audio_filter(), check_message(), emplace_new(), filters, frame, free_message(), LOG_LEVEL_ERROR, log_msg(), mod, msg, new_response(), reconfigure(), RESPONSE_INT_SERV_ERR, and RESPONSE_OK.

Referenced by audio_sender_thread(), and push_back().

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get_module()

struct module * Filter_chain::get_module ( )

inline

Definition at line 64 of file filter_chain.hpp.

{ return mod.get(); }

References mod.

Referenced by emplace_new().

operator=()

Filter_chain & Filter_chain::operator= ( const Filter_chain & )

delete

push_back()

void Filter_chain::push_back

(

struct audio_filter

filter

)

Definition at line 55 of file filter_chain.cpp.

                                                      {
        filters.push_back(filter);
}

References filter(), and filters.

Referenced by emplace_new().

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reconfigure()

af_result_code Filter_chain::reconfigure	(	int	bps,
		int	ch_count,
		int	sample_rate )

Definition at line 112 of file filter_chain.cpp.

                                                                              {
        if(this->bps == bps
                        && this->ch_count == ch_count
                        && this->sample_rate == sample_rate)
        {
                return AF_OK;
        }
 
        this->bps = bps;
        this->ch_count = ch_count;
        this->sample_rate = sample_rate;
 
        af_result_code res = AF_OK;
        for(auto& i : filters){
                res = audio_filter_configure(&i, bps, ch_count, sample_rate);
                if(res != AF_OK)
                        return res;
 
                audio_filter_get_configured_out(&i, &bps, &ch_count, &sample_rate);
        }
 
        return res;
}

References AF_OK, audio_filter_configure(), audio_filter_get_configured_out(), bps, ch_count, filters, and sample_rate.

Referenced by filter().

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Member Data Documentation

bps

int Filter_chain::bps = 0

private

Definition at line 67 of file filter_chain.hpp.

Referenced by reconfigure().

ch_count

int Filter_chain::ch_count = 0

private

Definition at line 68 of file filter_chain.hpp.

Referenced by reconfigure().

filters

std::vector<struct audio_filter> Filter_chain::filters

private

Definition at line 66 of file filter_chain.hpp.

Referenced by clear(), filter(), push_back(), and reconfigure().

mod

module_raii Filter_chain::mod

private

Definition at line 71 of file filter_chain.hpp.

Referenced by filter(), and get_module().

sample_rate

int Filter_chain::sample_rate = 0

private

Definition at line 69 of file filter_chain.hpp.

Referenced by reconfigure().

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

• src/audio/filter_chain.hpp
• src/audio/filter_chain.cpp