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mext.c
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/**
* Copyright (c) 2010 William Light <wrl@illest.net>
* Copyright (c) 2013 Nedko Arnaudov <nedko@arnaudov.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <monome.h>
#include "internal.h"
#include "platform.h"
#include "rotation.h"
#include "mext.h"
#define ARRAY_LENGTH(x) (sizeof(x) / sizeof(*x))
#define SELF_FROM(monome) mext_t *self = MEXT_T(monome)
/**
* protocol internal
*/
static ssize_t mext_write_msg(monome_t *monome, mext_msg_t *msg) {
size_t payload_length;
payload_length = outgoing_payload_lengths[msg->addr][msg->cmd];
msg->header = ((msg->addr & 0xF ) << 4) | (msg->cmd & 0xF);
return monome_platform_write(monome, &msg->header, 1 + payload_length);
}
static ssize_t mext_read_msg(monome_t *monome, mext_msg_t *msg) {
size_t payload_length;
ssize_t read;
if ((read = monome_platform_read(monome, &msg->header, 1)) <= 0)
return read;
msg->addr = msg->header >> 4;
msg->cmd = msg->header & 0xF;
payload_length = incoming_payload_lengths[msg->addr][msg->cmd];
if( !payload_length )
return 1;
if( monome_platform_read(monome, (uint8_t *) &msg->payload, payload_length)
!= payload_length )
return -1;
return 1 + payload_length;
}
static ssize_t mext_simple_cmd(monome_t *monome, mext_cmd_t cmd) {
mext_msg_t msg = {
.addr = SS_SYSTEM,
.cmd = cmd
};
return mext_write_msg(monome, &msg);
}
static ssize_t mext_led_row_col(monome_t *monome, mext_cmd_t cmd, uint_t x,
uint_t y, uint8_t data) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = cmd
};
if( ROTSPEC(monome).flags & ROW_COL_SWAP )
msg.cmd = !(cmd - CMD_LED_ROW) + CMD_LED_ROW;
ROTATE_COORDS(monome, x, y);
msg.payload.row_col.offset.x = x;
msg.payload.row_col.offset.y = y;
msg.payload.row_col.data = data;
return mext_write_msg(monome, &msg);
}
static void revcopy(uint8_t *dst, const uint8_t *src) {
int i = 8;
while( i-- )
dst[7 - i] = src[i];
}
static void pack_nybbles(uint8_t *data, size_t nbyte) {
uint_t i;
for( i = 0; i < nbyte; i++ )
data[i] =
(data[i * 2] << 4) |
(data[(i * 2) + 1] & 0x0F);
}
static ssize_t mext_led_level_row_col(monome_t *monome, mext_cmd_t cmd, int rev,
uint_t x, uint_t y, const uint8_t *data) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = cmd
};
if( ROTSPEC(monome).flags & ROW_COL_SWAP )
msg.cmd = !(cmd - CMD_LED_LEVEL_ROW) + CMD_LED_LEVEL_ROW;
ROTATE_COORDS(monome, x, y);
msg.payload.row_col.offset.x = x;
msg.payload.row_col.offset.y = y;
if( rev )
revcopy(msg.payload.level_row_col.levels, data);
else
memcpy(msg.payload.level_row_col.levels, data, 8);
pack_nybbles(msg.payload.level_row_col.levels, 4);
return mext_write_msg(monome, &msg);
}
/**
* led functions
*/
static int mext_led_set(monome_t *monome, uint_t x, uint_t y, uint_t on) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = on ? CMD_LED_ON : CMD_LED_OFF
};
ROTATE_COORDS(monome, x, y);
msg.payload.led.x = x;
msg.payload.led.y = y;
return mext_write_msg(monome, &msg);
}
static int mext_led_all(monome_t *monome, uint_t status) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = (status) ? CMD_LED_ALL_ON : CMD_LED_ALL_OFF
};
return mext_write_msg(monome, &msg);
}
static int mext_led_map(monome_t *monome, uint_t x_off, uint_t y_off,
const uint8_t *data) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = CMD_LED_MAP
};
memcpy(msg.payload.map.data, data, 8);
ROTSPEC(monome).map_cb(monome, msg.payload.map.data);
ROTATE_COORDS(monome, x_off, y_off);
msg.payload.map.offset.x = x_off;
msg.payload.map.offset.y = y_off;
return mext_write_msg(monome, &msg);
}
static int mext_led_row(monome_t *monome, uint_t x_off, uint_t y,
size_t count, const uint8_t *data) {
if( ROTSPEC(monome).flags & ROW_REVBITS ) {
for( ; count--; x_off += 8, data++ )
mext_led_row_col(
monome, CMD_LED_ROW, x_off, y, REVERSE_BYTE(*data));
} else {
for( ; count--; x_off += 8, data++ )
mext_led_row_col(
monome, CMD_LED_ROW, x_off, y, *data);
}
return 1;
}
static int mext_led_col(monome_t *monome, uint_t x, uint_t y_off,
size_t count, const uint8_t *data) {
if( ROTSPEC(monome).flags & COL_REVBITS ) {
for( ; count--; y_off += 8, data++ )
mext_led_row_col(
monome, CMD_LED_COLUMN, x, y_off, REVERSE_BYTE(*data));
} else {
for( ; count--; y_off += 8, data++ )
mext_led_row_col(
monome, CMD_LED_COLUMN, x, y_off, *data);
}
return 1;
}
static int mext_led_intensity(monome_t *monome, uint_t intensity) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = CMD_LED_INTENSITY
};
msg.payload.intensity = intensity & 0xF;
return mext_write_msg(monome, &msg);
}
static monome_led_functions_t mext_led_functions = {
.set = mext_led_set,
.all = mext_led_all,
.col = mext_led_col,
.row = mext_led_row,
.map = mext_led_map,
.intensity = mext_led_intensity
};
/**
* led level functions
*/
static int mext_led_level_set(monome_t *monome, uint_t x, uint_t y,
uint_t level) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = CMD_LED_LEVEL_SET,
.payload = {
.level_set = {
.level = level
}
}
};
ROTATE_COORDS(monome, x, y);
msg.payload.level_set.led.x = x;
msg.payload.level_set.led.y = y;
return mext_write_msg(monome, &msg);
}
static int mext_led_level_all(monome_t *monome, uint_t level) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = CMD_LED_LEVEL_ALL,
.payload = {
.level_all = level
}
};
return mext_write_msg(monome, &msg);
}
static int mext_led_level_map(monome_t *monome, uint_t x_off, uint_t y_off,
const uint8_t *data) {
mext_msg_t msg = {
.addr = SS_LED_GRID,
.cmd = CMD_LED_LEVEL_MAP
};
ROTATE_COORDS(monome, x_off, y_off);
ROTSPEC(monome).level_map_cb(monome, msg.payload.level_map.levels, data);
pack_nybbles(msg.payload.level_map.levels, 32);
msg.payload.level_map.offset.x = x_off;
msg.payload.level_map.offset.y = y_off;
return mext_write_msg(monome, &msg);
}
static int mext_led_level_row(monome_t *monome, uint_t x_off, uint_t row,
size_t count, const uint8_t *data) {
for( count >>= 3; count--; x_off += 8, data += 8 )
mext_led_level_row_col(
monome, CMD_LED_LEVEL_ROW, ROTSPEC(monome).flags & ROW_REVBITS,
x_off, row, data);
return 1;
}
static int mext_led_level_col(monome_t *monome, uint_t col, uint_t y_off,
size_t count, const uint8_t *data) {
for( count >>= 3; count--; y_off += 8, data += 8 )
mext_led_level_row_col(
monome, CMD_LED_LEVEL_COLUMN, ROTSPEC(monome).flags & COL_REVBITS,
col, y_off, data);
return 1;
}
static monome_led_level_functions_t mext_led_level_functions = {
.set = mext_led_level_set,
.all = mext_led_level_all,
.map = mext_led_level_map,
.row = mext_led_level_row,
.col = mext_led_level_col
};
/**
* led ring functions
*/
static int mext_led_ring_set(monome_t *monome, uint_t ring, uint_t led,
uint_t level) {
mext_msg_t msg = {
.addr = SS_LED_RING,
.cmd = CMD_LED_RING_SET,
.payload = {
.led_ring_set = {
.ring = ring,
.led = led,
.level = level
}
}
};
return mext_write_msg(monome, &msg);
}
static int mext_led_ring_all(monome_t *monome, uint_t ring, uint_t level) {
mext_msg_t msg = {
.addr = SS_LED_RING,
.cmd = CMD_LED_RING_ALL,
.payload = {
.led_ring_all = {
.ring = ring,
.level = level
}
}
};
return mext_write_msg(monome, &msg);
}
static int mext_led_ring_map(monome_t *monome, uint_t ring,
const uint8_t *levels) {
mext_msg_t msg = {
.addr = SS_LED_RING,
.cmd = CMD_LED_RING_MAP,
.payload = {
.led_ring_map = {
.ring = ring
}
}
};
memcpy(msg.payload.led_ring_map.levels, levels, 64);
pack_nybbles(msg.payload.led_ring_map.levels, 32);
return mext_write_msg(monome, &msg);
}
static int mext_led_ring_range(monome_t *monome, uint_t ring, uint_t start,
uint_t end, uint_t level) {
mext_msg_t msg = {
.addr = SS_LED_RING,
.cmd = CMD_LED_RING_RANGE,
.payload = {
.led_ring_range = {
.ring = ring,
.start = start,
.end = end,
.level = level
}
}
};
return mext_write_msg(monome, &msg);
}
static monome_led_ring_functions_t mext_led_ring_functions = {
.set = mext_led_ring_set,
.all = mext_led_ring_all,
.map = mext_led_ring_map,
.range = mext_led_ring_range
};
/**
* tilt functions
*/
static int mext_tilt_enable(monome_t *monome, uint_t sensor) {
mext_msg_t msg = {
.addr = SS_TILT,
.cmd = CMD_TILT_ENABLE,
.payload = {
.tilt_sys = {
.number = sensor
}
}
};
return mext_write_msg(monome, &msg);
}
static int mext_tilt_disable(monome_t *monome, uint_t sensor) {
mext_msg_t msg = {
.addr = SS_TILT,
.cmd = CMD_TILT_DISABLE,
.payload = {
.tilt_sys = {
.number = sensor
}
}
};
return mext_write_msg(monome, &msg);
}
static monome_tilt_functions_t mext_tilt_functions = {
.enable = mext_tilt_enable,
.disable = mext_tilt_disable
};
/**
* event handlers
*/
static int mext_handler_noop(struct mext *self, const struct mext_msg *msg,
monome_event_t *e) {
return 0;
}
static int mext_handler_system(struct mext *self, const struct mext_msg *msg,
monome_event_t *e) {
switch( msg->cmd ) {
case CMD_SYSTEM_QUERY_RESPONSE:
self->need_responses &= ~MEXT_NEED_QUERY;
break;
case CMD_SYSTEM_ID:
strncpy(self->id, (char *) msg->payload.id, 32);
self->id[32] = '\0'; /* just in case */
MONOME_T(self)->friendly = self->id;
self->need_responses &= ~MEXT_NEED_ID;
break;
case CMD_SYSTEM_GRID_OFFSET:
break;
case CMD_SYSTEM_GRIDSZ:
MONOME_T(self)->cols = msg->payload.gridsz.x;
MONOME_T(self)->rows = msg->payload.gridsz.y;
self->need_responses &= ~MEXT_NEED_GRID_SIZE;
break;
case CMD_SYSTEM_ADDR:
break;
case CMD_SYSTEM_VERSION:
break;
default:
break;
}
return 0;
}
static int mext_handler_key_grid(struct mext *self,
const struct mext_msg *msg, monome_event_t *e) {
e->event_type = ( msg->cmd == CMD_KEY_DOWN ) ? MONOME_BUTTON_DOWN : MONOME_BUTTON_UP;
e->grid.x = msg->payload.key.x;
e->grid.y = msg->payload.key.y;
UNROTATE_COORDS(MONOME_T(self), e->grid.x, e->grid.y);
return 1;
}
static int mext_handler_encoder(struct mext *self, const struct mext_msg *msg,
monome_event_t *e) {
switch( msg->cmd ) {
case CMD_ENCODER_DELTA:
e->event_type = MONOME_ENCODER_DELTA;
e->encoder.number = msg->payload.encoder.number;
e->encoder.delta = msg->payload.encoder.delta;
return 1;
case CMD_ENCODER_SWITCH_DOWN:
e->event_type = MONOME_ENCODER_KEY_DOWN;
e->encoder.number = msg->payload.encoder.number;
e->encoder.delta = 0;
return 1;
case CMD_ENCODER_SWITCH_UP:
e->event_type = MONOME_ENCODER_KEY_UP;
e->encoder.number = msg->payload.encoder.number;
e->encoder.delta = 0;
return 1;
default:
break;
}
return 0;
}
static int mext_handler_tilt(struct mext *self, const struct mext_msg *msg,
monome_event_t *e) {
switch( msg->cmd ) {
case CMD_TILT_STATES:
break;
case CMD_TILT:
e->event_type = MONOME_TILT;
e->tilt.sensor = msg->payload.tilt.number;
e->tilt.x = msg->payload.tilt.x;
e->tilt.y = msg->payload.tilt.y;
e->tilt.z = msg->payload.tilt.z;
return 1;
default:
break;
}
return 0;
}
static mext_handler_t subsystem_event_handlers[16] = {
[0 ... 15] = &mext_handler_noop,
[SS_SYSTEM] = mext_handler_system,
[SS_KEY_GRID] = mext_handler_key_grid,
[SS_ENCODER] = mext_handler_encoder,
[SS_TILT] = mext_handler_tilt
};
/**
* device control functions
*/
static int mext_next_event(monome_t *monome, monome_event_t *e) {
SELF_FROM(monome);
mext_msg_t msg = {0, 0};
ssize_t status;
while ((status = mext_read_msg(monome, &msg)) > 0) {
if (msg.addr == SS_SYSTEM) {
subsystem_event_handlers[0](self, &msg, e);
continue;
}
if(subsystem_event_handlers[msg.addr](self, &msg, e))
return 1;
}
return status;
}
static int mext_open(monome_t *monome, const char *dev, const char *serial,
const monome_devmap_t *m, va_list args) {
SELF_FROM(monome);
monome_event_t e;
if( monome_platform_open(monome, m, dev) )
return -1;
monome->serial = serial;
monome->friendly = m->friendly;
#define QUERY_IF_NEEDED(resp, cmd) \
do { \
if( self->need_responses & resp ) \
mext_simple_cmd(monome, cmd); \
} while( 0 )
do {
QUERY_IF_NEEDED(MEXT_NEED_QUERY, CMD_SYSTEM_QUERY);
QUERY_IF_NEEDED(MEXT_NEED_ID, CMD_SYSTEM_GET_ID);
QUERY_IF_NEEDED(MEXT_NEED_GRID_SIZE, CMD_SYSTEM_GET_GRIDSZ);
if (monome_platform_wait_for_input(monome, 250) < 0
|| mext_next_event(monome, &e) < 0)
return -1;
} while( self->need_responses );
#undef QUERY_IF_NEEDED
return 0;
}
static int mext_close(monome_t *monome) {
return monome_platform_close(monome);
}
static void mext_free(monome_t *monome) {
SELF_FROM(monome);
m_free(self);
}
#if defined(EMBED_PROTOS)
monome_t *monome_protocol_mext_new(void) {
#else
monome_t *monome_protocol_new(void) {
#endif
mext_t *self = m_calloc(1, sizeof(mext_t));
monome_t *monome = MONOME_T(self);
if( !monome )
return NULL;
monome->open = mext_open;
monome->close = mext_close;
monome->free = mext_free;
monome->next_event = mext_next_event;
monome->led = &mext_led_functions;
monome->led_level = &mext_led_level_functions;
monome->led_ring = &mext_led_ring_functions;
monome->tilt = &mext_tilt_functions;
self->need_responses =
MEXT_NEED_QUERY | MEXT_NEED_ID | MEXT_NEED_GRID_SIZE;
return monome;
}