dynamic_bitrate_helper

#include <dynamic_bitrate_helper.h>

Public Member Functions
	dynamic_bitrate_helper ()
void	on_frame (double p_duration, t_size p_bits)
bool	on_update (file_info &p_out, double &p_timestamp_delta)
void	reset ()

Private Member Functions
void	init ()

Private Attributes
bool	m_enabled
bool	m_inited
double	m_last_duration
t_size	m_update_bits
double	m_update_interval
double	m_update_time

Detailed Description

Definition at line 1 of file dynamic_bitrate_helper.h.

Constructor & Destructor Documentation

dynamic_bitrate_helper::dynamic_bitrate_helper

(

)

Definition at line 13 of file dynamic_bitrate_helper.cpp.

{
    reset();
}

Member Function Documentation

void dynamic_bitrate_helper::init ( )

private

Definition at line 18 of file dynamic_bitrate_helper.cpp.

{
    if (!m_inited)
    {
        m_inited = true;
        unsigned temp = g_query_settings();
        if (temp > 0) {m_enabled = true; m_update_interval = 1.0 / (double) temp; }
        else {m_enabled = false; m_update_interval = 0; }
        m_last_duration = 0;
        m_update_bits = 0;
        m_update_time = 0;

    }
}

void dynamic_bitrate_helper::on_frame	(	double	p_duration,
		t_size	p_bits
	)

Definition at line 33 of file dynamic_bitrate_helper.cpp.

{
    init();
    m_last_duration = p_duration;
    m_update_time += p_duration;
    m_update_bits += p_bits;
}

bool dynamic_bitrate_helper::on_update	(	file_info &	p_out,
		double &	p_timestamp_delta
	)

Definition at line 41 of file dynamic_bitrate_helper.cpp.

{
    init();

    bool ret = false;
    if (m_enabled)
    {
        if (m_update_time > m_update_interval)
        {
            int val = (int) ( ((double)m_update_bits / m_update_time + 500.0) / 1000.0 );
            if (val != p_out.info_get_bitrate_vbr())
            {
                p_timestamp_delta = - (m_update_time - m_last_duration);    //relative to last frame beginning;
                p_out.info_set_bitrate_vbr(val);
                ret = true;
            }
            m_update_bits = 0;
            m_update_time = 0;
        }
    }
    else
    {
        m_update_bits = 0;
        m_update_time = 0;
    }

    return ret;

}

void dynamic_bitrate_helper::reset

(

)

Definition at line 71 of file dynamic_bitrate_helper.cpp.

{
    m_inited = false;
}

Field Documentation

bool dynamic_bitrate_helper::m_enabled

private

Definition at line 14 of file dynamic_bitrate_helper.h.

bool dynamic_bitrate_helper::m_inited

private

Definition at line 14 of file dynamic_bitrate_helper.h.

double dynamic_bitrate_helper::m_last_duration

private

Definition at line 10 of file dynamic_bitrate_helper.h.

t_size dynamic_bitrate_helper::m_update_bits

private

Definition at line 11 of file dynamic_bitrate_helper.h.

double dynamic_bitrate_helper::m_update_interval

private

Definition at line 13 of file dynamic_bitrate_helper.h.

double dynamic_bitrate_helper::m_update_time

private

Definition at line 12 of file dynamic_bitrate_helper.h.

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

• foobar2000/helpers/dynamic_bitrate_helper.h
• foobar2000/helpers/dynamic_bitrate_helper.cpp