https://bitbucket.org/hudson/magic-lantern
Tip revision: 97915c3f51a376a25d5c8d105aa4027ca114db22 authored by hudson@kremvax on 01 August 2009, 20:14:53 UTC
Fix bug 18: Implement a simple bracketing algorithm (needs to be reworked)
Fix bug 18: Implement a simple bracketing algorithm (needs to be reworked)
Tip revision: 97915c3
audio.c
/** \file
* Onscreen audio meters
*/
/*
* Copyright (C) 2009 Trammell Hudson <hudson+ml@osresearch.net>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "dryos.h"
#include "bmp.h"
#include "config.h"
#include "property.h"
#include "menu.h"
struct gain_struct
{
void * mvr_rec_token;
struct semaphore * sem;
unsigned alc1;
unsigned sig1;
unsigned sig2;
unsigned loopback;
unsigned alc_enable;
unsigned mic_power;
unsigned mic_in;
unsigned mgain;
unsigned lovl;
unsigned o2gain;
unsigned dgain_l;
unsigned dgain_r;
};
static struct gain_struct gain = {
.mvr_rec_token = (void*) 1,
.sem = (void*) 1,
};
/** Read the raw level from the audio device.
*
* Expected values are signed 16-bit?
*/
static inline int16_t
audio_read_level( int channel )
{
uint32_t *audio_level = (uint32_t*)( 0xC0920000 + 0x110 );
return (int16_t) audio_level[channel];
}
struct audio_level
{
int last;
int avg;
int peak;
int pad;
};
struct audio_level audio_levels[2];
/** Returns a dB translated from the raw level
*
* Range is -40 to 0 dB
*/
static int
audio_level_to_db(
int raw_level
)
{
int db;
for( db = 40 ; db ; db-- )
{
if( audio_thresholds[db] > raw_level )
return -db;
}
return 0;
}
#ifdef OSCOPE_METERS
void draw_meters(void)
{
#define MAX_SAMPLES 720
static int16_t levels[ MAX_SAMPLES ];
static uint32_t index;
levels[ index++ ] = audio_read_level();
if( index >= MAX_SAMPLES )
index = 0;
struct vram_info * vram = &vram_info[ vram_get_number(2) ];
//thunk audio_dev_compute_average_level = (void*) 0xFF9725C4;
//audio_dev_compute_average_level();
// The level goes from -40 to 0
uint32_t x;
for( x=0 ; x<MAX_SAMPLES && x<vram->width ; x++ )
{
uint16_t y = 256 + levels[ x ] / 128;
vram->vram[ y * vram->pitch + x ] = 0xFFFF;
}
uint32_t y;
for( y=0 ; y<128 ; y++ )
{
vram->vram[ y * vram->pitch + index ] = 0x888F;
}
}
#else
static uint8_t
db_to_color(
int db
)
{
if( db < -35 )
return 0x2F; // white
if( db < -20 )
return 0x06; // dark green
if( db < -15 )
return 0x0F; // yellow
return 0x0c; // dull red
}
static uint8_t
db_peak_to_color(
int db
)
{
if( db < -35 )
return 0x7f; // dark blue
if( db < -20 )
return 0x7f; // dark blue
if( db < -15 )
return 0xAE; // bright yellow
return 0x08; // bright red
}
static void
draw_meter(
int y_origin,
struct audio_level * level
)
{
const uint32_t width = 600; // bmp_width();
const uint32_t pitch = bmp_pitch();
uint32_t * row = (uint32_t*) bmp_vram();
if( !row )
return;
// Skip to the desired y coord and over the
// space for the numerical levels
row += (pitch/4) * y_origin + 8;
const int db_avg = audio_level_to_db( level->avg );
const int db_peak = audio_level_to_db( level->peak );
// levels go from -40 to 0, so -40 * 15 == 600
const uint32_t x_db_avg = (width + db_avg * 15) / 4;
const uint32_t x_db_peak = (width + db_peak * 15) / 4;
const uint8_t bar_color = db_to_color( db_avg );
const uint8_t peak_color = db_peak_to_color( db_peak );
const int meter_height = 12;
const uint32_t bar_color_word = color_word( bar_color );
const uint32_t peak_color_word = color_word( peak_color );
const uint32_t bg_color_word = color_word( COLOR_BG );
// Write the meter an entire scan line at a time
int y;
for( y=0 ; y<meter_height ; y++, row += pitch/4 )
{
uint32_t x;
for( x=0 ; x<width/4 ; x++ )
{
if( x < x_db_avg )
row[x] = bar_color_word;
else
if( x < x_db_peak )
row[x] = bg_color_word;
else
if( x < x_db_peak + 4 )
row[x] = peak_color_word;
else
row[x] = bg_color_word;
}
}
// Write the current level
bmp_printf( FONT_SMALL, 0, y_origin, "%3d", db_avg );
}
static void
draw_ticks(
int y,
int tick_height
)
{
const uint32_t width = 600 + 8; // bmp_width();
const uint32_t pitch = bmp_pitch();
uint32_t * row = (uint32_t*) bmp_vram();
if( !row )
return;
row += (pitch/4) * y;
const uint32_t white_word = 0
| ( COLOR_WHITE << 24 )
| ( COLOR_WHITE << 16 )
| ( COLOR_WHITE << 8 )
| ( COLOR_WHITE << 0 );
for( ; tick_height > 0 ; tick_height--, row += pitch/4 )
{
int db;
for( db=-40; db<= 0 ; db+=5 )
{
const uint32_t x_db = width + db * 15;
row[x_db/4] = white_word;
}
}
}
/* Normal VU meter */
static void draw_meters(void)
{
// The db values are multiplied by 8 to make them
// smoother.
draw_meter( 0, &audio_levels[0] );
draw_ticks( 12, 4 );
draw_meter( 16, &audio_levels[1] );
}
#endif
static void
compute_audio_levels(
int ch
)
{
struct audio_level * const level = &audio_levels[ch];
int raw = audio_read_level( ch );
if( raw < 0 )
raw = -raw;
level->last = raw;
level->avg = (level->avg * 15 + raw) / 16;
if( raw > level->peak )
level->peak = raw;
// Decay the peak to the average
level->peak = ( level->peak * 31 + level->avg ) / 32;
}
/** Task to monitor the audio levels.
*
* Compute the average and peak level, periodically calling
* the draw_meters() function to display the results on screen.
* \todo Check that we have live-view enabled and the TFT is on
* before drawing.
*/
static void
meter_task( void )
{
DebugMsg( DM_MAGIC, 3, "!!!!! User task is running" );
msleep( 4000 );
while(1)
{
msleep( 50 );
draw_meters();
}
}
TASK_CREATE( "meter_task", meter_task, 0, 0x18, 0x1000 );
/** Monitor the audio levels very quickly */
static void
compute_audio_level_task( void )
{
msleep( 4000 );
audio_levels[0].peak = audio_levels[1].peak = 0;
audio_levels[1].avg = audio_levels[1].avg = 0;
while(1)
{
msleep( 16 );
compute_audio_levels( 0 );
compute_audio_levels( 1 );
}
}
TASK_CREATE( "audio_level_task", compute_audio_level_task, 0, 0x1e, 0x1000 );
/** Write the MGAIN2-0 bits.
* Table 19 for the gain values:
*
* 0 == +0 dB
* 1 == +20 dB
* 2 == +26 dB
* 3 == +32 dB
* 4 == +10 dB
* 5 == +17 dB
* 6 == +23 dB
* 7 == +29 dB
*
* Why is it split between two registers? I don't know.
*/
static inline void
audio_ic_set_mgain(
unsigned bits
)
{
bits &= 0x7;
unsigned sig1 = audio_ic_read( AUDIO_IC_SIG1 );
sig1 &= ~0x3;
sig1 |= (bits & 1);
sig1 |= (bits & 4) >> 1;
audio_ic_write( AUDIO_IC_SIG1 | sig1 );
gain.sig1 = sig1;
unsigned sig2 = audio_ic_read( AUDIO_IC_SIG2 );
sig2 &= ~(1<<5);
sig2 |= (bits & 2) << 4;
audio_ic_write( AUDIO_IC_SIG2 | sig2 );
gain.sig2 = sig2;
}
static inline uint8_t
audio_gain_to_cmd(
int gain
)
{
unsigned cmd = ( gain * 1000 ) / 375 + 145;
cmd &= 0xFF;
return cmd;
}
static inline void
audio_ic_set_input_volume(
int channel,
int gain
)
{
unsigned cmd = audio_gain_to_cmd( gain );
if( channel )
cmd |= AUDIO_IC_IVL;
else
cmd |= AUDIO_IC_IVR;
audio_ic_write( cmd );
}
static void
audio_configure( int force )
{
if( !force )
{
// Check for ALC configuration; do nothing if it is
// already disabled
if( audio_ic_read( AUDIO_IC_ALC1 ) == gain.alc1
&& audio_ic_read( AUDIO_IC_SIG1 ) == gain.sig1
&& audio_ic_read( AUDIO_IC_SIG2 ) == gain.sig2
)
return;
DebugMsg( DM_AUDIO, 3, "%s: Reseting user settings", __func__ );
}
audio_ic_write( AUDIO_IC_PM1 | 0x6D ); // power up ADC and DAC
audio_ic_write( AUDIO_IC_SIG1
| 0x10
| ( gain.mic_power ? 0x4 : 0x0 )
); // power up, no gain
audio_ic_write( AUDIO_IC_SIG2
| 0x04 // external, no gain
| ( gain.lovl & 0x3) << 0 // line output level
);
if( gain.mic_in )
audio_ic_write( AUDIO_IC_PM3 | 0x00 ); // internal mic
else
audio_ic_write( AUDIO_IC_PM3 | 0x07 ); // external input
gain.alc1 = gain.alc_enable ? (1<<5) : 0;
audio_ic_write( AUDIO_IC_ALC1 | gain.alc1 ); // disable all ALC
// Control left/right gain independently
audio_ic_write( AUDIO_IC_MODE4 | 0x00 );
audio_ic_set_input_volume( 0, gain.dgain_r );
audio_ic_set_input_volume( 1, gain.dgain_l );
// 4 == 10 dB
// 5 == 17 dB
// 3 == 32 dB
audio_ic_set_mgain( gain.mgain ); // 10 dB
// Disable the HPF
//audio_ic_write( AUDIO_IC_HPF0 | 0x00 );
//audio_ic_write( AUDIO_IC_HPF1 | 0x00 );
//audio_ic_write( AUDIO_IC_HPF2 | 0x00 );
//audio_ic_write( AUDIO_IC_HPF3 | 0x00 );
// Enable the LPF
// Canon uses F2A/B = 0x0ED4 and 0x3DA9.
audio_ic_write( AUDIO_IC_LPF0 | 0xD4 );
audio_ic_write( AUDIO_IC_LPF1 | 0x0E );
audio_ic_write( AUDIO_IC_LPF2 | 0xA9 );
audio_ic_write( AUDIO_IC_LPF3 | 0x3D );
audio_ic_write( AUDIO_IC_FIL1
| audio_ic_read( AUDIO_IC_FIL1 )
| (1<<5)
);
// Enable loop mode and output digital volume2
uint32_t mode3 = audio_ic_read( AUDIO_IC_MODE3 );
mode3 &= ~0x5C; // disable loop, olvc, datt0/1
audio_ic_write( AUDIO_IC_MODE3
| mode3 // old value
| gain.loopback << 6 // loop mode
| (gain.o2gain & 0x3) << 2 // output volume
);
//draw_audio_regs();
bmp_printf( FONT_SMALL, 500, 400,
"Gain %d/%d Mgain %d",
gain.dgain_l,
gain.dgain_r,
gain.mgain
);
DebugMsg( DM_AUDIO, 3,
"Gain mgain=%d dgain=%d/%d",
gain.mgain,
gain.dgain_l,
gain.dgain_r
);
}
/** Menu handlers */
static void
audio_binary_toggle( void * priv )
{
unsigned * ptr = priv;
*ptr = !*ptr;
audio_configure( 1 );
}
static void
audio_3bit_toggle( void * priv )
{
unsigned * ptr = priv;
*ptr = (*ptr + 0x1) & 0x3;
audio_configure( 1 );
}
static void
audio_mgain_toggle( void * priv )
{
unsigned * ptr = priv;
*ptr = (*ptr + 0x1) & 0x7;
audio_configure( 1 );
}
static void
audio_mgain_display( void * priv, int x, int y, int selected )
{
static uint8_t gains[] = { 0, 20, 26, 32, 10, 17, 23, 29 };
unsigned gain_reg= *(unsigned*) priv;
gain_reg &= 0x7;
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"A-Gain: %2d dB",
gains[ gain_reg ]
);
}
static void
audio_dgain_toggle( void * priv )
{
unsigned dgain = *(unsigned*) priv;
dgain += 6;
if( dgain > 40 )
dgain = 0;
*(unsigned*) priv = dgain;
audio_configure( 1 );
}
static void
audio_dgain_display( void * priv, int x, int y, int selected )
{
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
// 23456789
"%s-Gain: %2d dB",
priv == &gain.dgain_l ? "L" : "R",
*(unsigned*) priv
);
}
static void
audio_lovl_display( void * priv, int x, int y, int selected )
{
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"Out vol: %2d dB",
2 * *(unsigned*) priv
);
}
#if 0
static void
audio_o2gain_display( void * priv, int x, int y, int selected )
{
static uint8_t gains[] = { 0, 6, 12, 18 };
unsigned gain_reg= *(unsigned*) priv;
gain_reg &= 0x3;
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"o2gain: -%2d dB",
gains[ gain_reg ]
);
}
#endif
static void
audio_alc_display( void * priv, int x, int y, int selected )
{
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"AGC: %s",
gain.alc_enable ? "ON " : "OFF"
);
}
static void
audio_mic_in_display( void * priv, int x, int y, int selected )
{
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"Input: %s",
gain.mic_in ? "INTERNAL" : "EXTERNAL"
);
}
static void
audio_loopback_display( void * priv, int x, int y, int selected )
{
bmp_printf(
selected ? MENU_FONT_SEL : MENU_FONT,
x, y,
//23456789
"Monitor: %s",
gain.loopback ? "ON " : "OFF"
);
}
static struct menu_entry audio_menus[] = {
{
.priv = &gain.lovl,
.select = audio_3bit_toggle,
.display = audio_lovl_display,
},
#if 0
{
.priv = &gain.o2gain,
.select = audio_o2gain_toggle,
.display = audio_o2gain_display,
},
#endif
{
.priv = &gain.mgain,
.select = audio_mgain_toggle,
.display = audio_mgain_display,
},
{
.priv = &gain.dgain_l,
.select = audio_dgain_toggle,
.display = audio_dgain_display,
},
{
.priv = &gain.dgain_r,
.select = audio_dgain_toggle,
.display = audio_dgain_display,
},
{
.priv = &gain.alc_enable,
.select = audio_binary_toggle,
.display = audio_alc_display,
},
{
.priv = &gain.mic_in,
.select = audio_binary_toggle,
.display = audio_mic_in_display,
},
{
.priv = &gain.loopback,
.select = audio_binary_toggle,
.display = audio_loopback_display,
},
};
static void
handle_mvr_rec_token(
void * token
)
{
gain.mvr_rec_token = token;
}
static void
handle_mvr_rec_property(
unsigned property,
void * UNUSED( priv ),
void * buf,
unsigned len
)
{
const unsigned mode = *(unsigned*) buf;
DebugMsg( DM_MAGIC, 3, "mvr_rec_start: %x %x", (unsigned) buf, mode );
switch( mode )
{
case 0:
// Movie recording stopped; (fallthrough)
case 2:
// Movie recording started
give_semaphore( gain.sem );
break;
case 1:
// Movie recording about to start?
break;
default:
// Uh?
break;
}
prop_cleanup( gain.mvr_rec_token, property );
}
/** Replace the sound dev task with our own to disable AGC.
*
* This task disables the AGC when the sound device is activated.
*/
void
my_sounddev_task( void )
{
DebugMsg( DM_AUDIO, 3,
"!!!!! %s started sem=%x",
__func__,
(uint32_t) sounddev.sem_alc
);
gain.sem = create_named_semaphore( "audio_gain", 1 );
static unsigned mvr_rec_events[] = { PROP_MVR_REC_START, };
prop_register_slave(
mvr_rec_events,
1,
handle_mvr_rec_property,
NULL,
handle_mvr_rec_token
);
msleep( 2000 );
// Fake the sound dev task parameters
sounddev.sem_alc = create_named_semaphore( 0, 0 );
sounddev_active_in(0,0);
// Set defaults
gain.mgain = config_int( global_config, "audio.mgain", 4 );
int dgain = config_int( global_config, "audio.dgain", 18 );
gain.dgain_l = config_int( global_config, "audio.dgain.l", dgain );
gain.dgain_r = config_int( global_config, "audio.dgain.r", dgain );
gain.mic_power = config_int( global_config, "audio.mic-power", 1 );
gain.lovl = config_int( global_config, "audio.lovl", 3 );
gain.o2gain = config_int( global_config, "audio.o2gain", 0 );
gain.alc_enable = config_int( global_config, "audio.alc_enable", 0 );
gain.mic_in = config_int( global_config, "audio.mic-in", 0 );
gain.loopback = config_int( global_config, "audio.loopback", 1 );
int disable_powersave = config_int( global_config, "disable-powersave", 1 );
if( disable_powersave )
{
DebugMsg( DM_MAGIC, 3,
"%s: Disabling powersave",
__func__
);
prop_request_icu_auto_poweroff( EM_PROHIBIT );
}
// Create the menu items
menu_add( "Audio", audio_menus, COUNT(audio_menus) );
audio_configure( 1 ); // force it this time
while(1)
{
// will be unlocked by the property handler
int rc = take_semaphore( gain.sem, 1000 );
audio_configure( rc == 0 ); // force it if we got the semaphore
}
}
TASK_OVERRIDE( sounddev_task, my_sounddev_task );
/** Replace the audio level task with our own.
*
* This task runs when the sound device is activated to keep track of
* the average audio level and translate it to dB. Nothing ever seems
* to activate it, so it is commented out for now.
*/
static void
my_audio_level_task( void )
{
//const uint32_t * const thresholds = (void*) 0xFFC60ABC;
DebugMsg( DM_AUDIO, 3, "!!!!! %s: Replaced Canon task %x", __func__, audio_level_task );
audio_in.gain = -40;
audio_in.sample_count = 0;
audio_in.max_sample = 0;
audio_in.sem_interval = create_named_semaphore( 0, 1 );
audio_in.sem_task = create_named_semaphore( 0, 0 );
while(1)
{
DebugMsg( DM_AUDIO, 3, "%s: sleeping init=%d",
__func__,
audio_in.initialized
);
if( take_semaphore( audio_in.sem_interval, 0 ) & 1 )
{
//DebugAssert( "!IS_ERROR", "SoundDevice sem_interval", 0x82 );
break;
}
if( take_semaphore( audio_in.sem_task, 0 ) & 1 )
{
//DebugAssert( "!IS_ERROR", SoundDevice", 0x83 );
break;
}
DebugMsg( DM_AUDIO, 3, "%s: awake init=%d\n", __func__, audio_in.initialized );
if( !audio_in.initialized )
{
DebugMsg( DM_AUDIO, 3, "**** %s: agc=%d/%d wind=%d volume=%d",
__func__,
audio_in.agc_on,
audio_in.last_agc_on,
audio_in.windcut,
audio_in.volume
);
audio_set_filter_off();
if( audio_in.last_agc_on == 1
&& audio_in.agc_on == 0
)
audio_set_alc_off();
audio_in.last_agc_on = audio_in.agc_on;
audio_set_windcut( audio_in.windcut );
audio_set_sampling_param( 44100, 0x10, 1 );
audio_set_volume_in(
audio_in.agc_on,
audio_in.volume
);
if( audio_in.agc_on == 1 )
audio_set_alc_on();
audio_in.initialized = 1;
audio_in.gain = -39;
audio_in.sample_count = 0;
}
if( audio_in.asif_started == 0 )
{
DebugMsg( DM_AUDIO, 3, "%s: Starting asif observer", __func__ );
audio_start_asif_observer();
audio_in.asif_started = 1;
}
//uint32_t level = audio_read_level(0);
give_semaphore( audio_in.sem_task );
// Never adjust it!
//set_audio_agc();
//if( file != (void*) 0xFFFFFFFF )
//FIO_WriteFile( file, &level, sizeof(level) );
// audio_interval_wakeup will unlock our semaphore
oneshot_timer( 0x200, audio_interval_unlock, audio_interval_unlock, 0 );
}
DebugMsg( DM_AUDIO, 3, "!!!!! %s task exited????", __func__ );
}
TASK_OVERRIDE( audio_level_task, my_audio_level_task );