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This commit is contained in:
Tomasz Moń
2009-03-14 14:23:18 +01:00
parent 71c3a1e66f
commit 9778dc47c3
6 changed files with 170 additions and 63 deletions
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1
TODO
View File

@@ -3,3 +3,4 @@
-handling presets (saving, exporting to xml patches)
-buildsystem (install knob.png to share dir, don't use inline knob pixbuf)
-add expression pedal settings to gui
-read asynchronously from MIDI IN

47
effects.c
View File

@@ -735,7 +735,7 @@ EffectList effects[] = {
int n_effects = G_N_ELEMENTS(effects);
typedef struct {
const gchar *label;
gchar *label;
guint id;
guint position;
EffectValues *values;
@@ -879,8 +879,14 @@ static Modifier modifiers[] = {
int n_modifiers = G_N_ELEMENTS(modifiers);
/*
returned value must not be freed
/**
* get_modifier:
* @id: modifier ID
* @position: modifier position
*
* Gets modifier info.
*
* Return value: Modifier which must not be freed, or NULL if no matching Modifier has been found.
*/
static Modifier *get_modifier(guint id, guint position)
{
@@ -893,6 +899,14 @@ static Modifier *get_modifier(guint id, guint position)
return NULL;
}
/**
* get_modifier_settings:
* @values: possible setting values
*
* Creates EffectSettings containing expression pedal min and max settings.
*
* Return value: EffectSettings which must be freed using effect_settings_free.
**/
static EffectSettings *get_modifier_settings(EffectValues *values)
{
if (values == NULL)
@@ -913,6 +927,24 @@ static EffectSettings *get_modifier_settings(EffectValues *values)
return settings;
}
/**
* effect_settings_free:
* @settings: settings to be freed
*
* Frees all memory used by EffectSettings.
**/
static void effect_settings_free(EffectSettings *settings)
{
g_slice_free1(2 * sizeof(EffectSettings), settings);
}
/**
* modifier_linkable_list:
*
* Retrieves modifier linkable gruop from device.
*
* Return value: ModifierGroup which must be freed using modifier_group_free.
**/
ModifierGroup *modifier_linkable_list()
{
guint group_id;
@@ -963,6 +995,12 @@ ModifierGroup *modifier_linkable_list()
return modifier_group;
}
/**
* modifier_group_free:
* @modifier_group: group to be freed
*
* Frees all memory used by ModifierGroup.
**/
void modifier_group_free(ModifierGroup *modifier_group)
{
g_return_if_fail(modifier_group != NULL);
@@ -970,8 +1008,7 @@ void modifier_group_free(ModifierGroup *modifier_group)
int x;
for (x=0; x<modifier_group->group_amt; x++) {
if (modifier_group->group[x].settings)
g_slice_free1(2 * sizeof(EffectSettings),
modifier_group->group[x].settings);
effect_settings_free(modifier_group->group[x].settings);
}
g_slice_free1(modifier_group->group_amt * sizeof(EffectGroup),
modifier_group->group);

4
effects.h
View File

@@ -26,7 +26,7 @@ typedef struct {
} EffectValues;
typedef struct {
char *label; /* Parameter name */
gchar *label; /* Parameter name */
guint id; /* ID (to set parameter) */
guint position; /* position */
EffectValues *values; /* valid parameter values */
@@ -42,7 +42,7 @@ typedef struct {
} EffectGroup;
typedef struct {
char *label; /* Base effect name */
gchar *label; /* Base effect name */
guint id; /* ID (to set effect on/off) */
guint position; /* position */
EffectGroup *group; /* possible effect types */

174
gdigi.c
View File

@@ -51,10 +51,13 @@ static char calculate_checksum(gchar *array, gint length)
return checksum;
}
/*
opens MIDI device
Returns TRUE on error
*/
/**
* open_device:
*
* Opens MIDI device. This function modifies global input and output variables.
*
* Return value: FALSE on success, TRUE on error.
**/
gboolean open_device()
{
int err;
@@ -76,14 +79,27 @@ gboolean open_device()
return FALSE;
}
/**
* send_data:
* @data: data to be sent
* @length: data length
*
* Sends data to device. This function uses global output variable.
**/
void send_data(char *data, int length)
{
if (output == NULL)
open_device();
snd_rawmidi_write(output, data, length);
}
/**
* pack_data:
* @data: data to be packed
* @len: data length
*
* Packs data using method used on all newer DigiTech products.
*
* Return value: GString containing packed data
**/
GString *pack_data(gchar *data, gint len)
{
GString *packed;
@@ -114,6 +130,12 @@ GString *pack_data(gchar *data, gint len)
return packed;
}
/**
* unpack_message:
* @msg: message to unpack
*
* Unpacks message data. This function modifies given GString.
**/
static void unpack_message(GString *msg)
{
int offset;
@@ -152,11 +174,13 @@ static void unpack_message(GString *msg)
g_string_truncate(msg, i);
}
/*
reads data from MIDI IN
returns GString containing data
if no data was read it returns NULL
*/
/**
* read_data:
*
* Reads data from MIDI IN. This function uses global input variable.
*
* Return value: GString containing data, or NULL when no data was read.
**/
GString* read_data()
{
/* This is mostly taken straight from alsa-utils-1.0.19 amidi/amidi.c
@@ -220,19 +244,14 @@ GString* read_data()
return string;
}
static void clear_midi_in_buffer()
{
GString *str;
do {
str = read_data();
} while (str != NULL);
}
/*
data - unpacked data to send
len - data length
*/
/**
* send_message:
* @procedure: procedure ID
* @data: unpacked message data
* @len: data length
*
* Creates SysEx message then sends it. This function uses folowing global variables: device_id, family_id and product_id.
**/
void send_message(gint procedure, gchar *data, gint len)
{
GString *msg = g_string_new_len("\xF0" /* SysEx status byte */
@@ -258,8 +277,17 @@ void send_message(gint procedure, gchar *data, gint len)
g_string_free(msg, TRUE);
}
static gint get_message_id(GString *msg)
/**
* get_message_id:
* @msg: SysEx message
*
* Checks message ID.
*
* Return value: MessageID, or -1 on error.
**/
static MessageID get_message_id(GString *msg)
{
/* TODO: sanity checks */
g_return_val_if_fail(msg != NULL, -1);
if (msg->len > 7) {
@@ -268,6 +296,14 @@ static gint get_message_id(GString *msg)
return -1;
}
/**
* get_message_by_id:
* @id: MessageID of requested message
*
* Reads data from MIDI IN until message with matching id is found.
*
* Return value: GString containing unpacked message.
**/
GString *get_message_by_id(MessageID id)
{
GString *data = NULL;
@@ -283,6 +319,13 @@ GString *get_message_by_id(MessageID id)
return data;
}
/**
* append_value:
* @msg: message to append value
* @value: value to append
*
* Packs value using scheme used on all newer DigiTech products.
**/
void append_value(GString *msg, guint value)
{
/* check how many bytes long the value is */
@@ -310,11 +353,14 @@ void append_value(GString *msg, guint value)
}
}
/*
id - ID as found in preset file
position - Position as found in preset file
value - Value as found in preset file
*/
/**
* set_option:
* @id: Parameter ID
* @position: Parameter position
* @value: Parameter value
*
* Forms SysEx message to set parameter then sends it to device.
**/
void set_option(guint id, guint position, guint value)
{
GString *msg = g_string_sized_new(9);
@@ -326,7 +372,13 @@ void set_option(guint id, guint position, guint value)
g_string_free(msg, TRUE);
}
/* x = 0 to 60 */
/**
* switch_preset:
* @bank: preset bank
* @x: preset index
*
* Switches to selected preset.
**/
void switch_preset(guint bank, guint x)
{
GString *msg = g_string_sized_new(6);
@@ -339,12 +391,13 @@ void switch_preset(guint bank, guint x)
g_string_free(msg, TRUE);
}
/* level = 0 to 99 */
void set_preset_level(int level)
{
set_option(PRESET_LEVEL, PRESET_POSITION, level);
}
/**
* store_preset_name:
* @x: preset index
* @name: preset name
*
* Stores current edit buffer in user presets bank.
**/
void store_preset_name(int x, const gchar *name)
{
GString *msg = g_string_sized_new(6);
@@ -357,7 +410,13 @@ void store_preset_name(int x, const gchar *name)
g_string_free(msg, TRUE);
}
/* x = 0 to 59 (preset number) */
/**
* set_preset_name:
* @x: preset index
* @name: preset name
*
* Sets preset name.
**/
void set_preset_name(int x, gchar *name)
{
GString *msg = g_string_sized_new(12);
@@ -369,12 +428,14 @@ void set_preset_name(int x, gchar *name)
g_string_free(msg, TRUE);
}
/*
Queries user preset names
Valid bank values are PRESETS_SYSTEM and PRESETS_USER
Returns GStrv which must be freed with g_strfreev
Returns NULL on error
*/
/**
* query_preset_names:
* @bank: preset bank
*
* Queries preset names.
*
* Return value: GStrv which must be freed with g_strfreev, or NULL on error.
**/
GStrv query_preset_names(gchar bank)
{
GString *data = NULL;
@@ -383,9 +444,6 @@ GStrv query_preset_names(gchar bank)
int n_total; /* total number of presets */
gchar **str_array = NULL;
/* clear MIDI IN buffer */
clear_midi_in_buffer();
/* query user preset names */
send_message(REQUEST_PRESET_NAMES, &bank, 1);
@@ -412,13 +470,17 @@ GStrv query_preset_names(gchar bank)
return str_array;
}
/**
* get_current_preset:
*
* Queries current edit buffer.
*
* Return value: GString containing RECEIVE_PRESET_PARAMETERS SysEx message.
**/
GString *get_current_preset()
{
GString *data = NULL;
/* clear MIDI IN buffer */
clear_midi_in_buffer();
send_message(REQUEST_PRESET, "\x04\x00", 3);
/* read reply */
@@ -427,6 +489,16 @@ GString *get_current_preset()
return data;
}
/**
* request_who_am_i:
* @device_id: Variable to hold device ID
* @family_id: Variable to hold family ID
* @product_id: Variable to hold product ID
*
* Requests device information.
*
* Return value: TRUE on success, FALSE on error.
**/
static gboolean request_who_am_i(unsigned char *device_id, unsigned char *family_id,
unsigned char *product_id)
{

4
gdigi.h
View File

@@ -539,7 +539,7 @@ enum {
#define USB_AUDIO_PLAYBACK_MIX 12297
#define USB_AUDIO_LEVEL 12307
enum {
typedef enum {
PRESETS_SYSTEM = 0,
PRESETS_USER = 1,
PRESETS_ARTIST = 2,
@@ -551,7 +551,7 @@ enum {
/* Version 2 and later */
PRESETS_EXTERNAL = 6
};
} PresetBank;
typedef enum {
REQUEST_WHO_AM_I = 0x01,

3
tests.c
View File

@@ -210,9 +210,6 @@ void test_presets()
for (x=0; x<=60; x++)
switch_preset(PRESETS_SYSTEM, x);
for (x=0; x<=99; x++)
set_preset_level(x);
}
void test_pickups()