133 lines
3.6 KiB
C
133 lines
3.6 KiB
C
/*
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* lws abstract display
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*
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* Copyright (C) 2019 - 2020 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include <libwebsockets.h>
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static void
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sul_autodim_cb(lws_sorted_usec_list_t *sul)
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{
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lws_display_state_t *lds = lws_container_of(sul, lws_display_state_t,
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sul_autodim);
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int next_ms = -1;
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/* we fire both to dim and to blank... if already in dim state, blank */
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switch (lds->state) {
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case LWSDISPS_BECOMING_ACTIVE:
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lws_display_state_set_brightness(lds, lds->disp->bl_active);
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lds->state = LWSDISPS_ACTIVE;
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next_ms = lds->autodim_ms;
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break;
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case LWSDISPS_ACTIVE:
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/* active -> autodimmed */
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lds->state = LWSDISPS_AUTODIMMED;
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next_ms = lds->off_ms;
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lws_display_state_set_brightness(lds, lds->disp->bl_dim);
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break;
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case LWSDISPS_AUTODIMMED:
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/* dimmed -> OFF */
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lws_display_state_set_brightness(lds, &lws_pwmseq_static_off);
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lds->state = LWSDISPS_GOING_OFF;
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next_ms = 600;
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break;
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case LWSDISPS_GOING_OFF:
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/* off dimming completed, actual display OFF */
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lws_display_state_off(lds);
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return;
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default:
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return;
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}
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if (next_ms >= 0)
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lws_sul_schedule(lds->ctx, 0, &lds->sul_autodim, sul_autodim_cb,
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next_ms * LWS_US_PER_MS);
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}
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void
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lws_display_state_init(lws_display_state_t *lds, struct lws_context *ctx,
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int dim_ms, int off_ms, struct lws_led_state *bl_lcs,
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const lws_display_t *disp)
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{
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memset(lds, 0, sizeof(*lds));
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lds->disp = disp;
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lds->ctx = ctx;
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lds->autodim_ms = dim_ms;
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lds->off_ms = off_ms;
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lds->bl_lcs = bl_lcs;
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lds->state = LWSDISPS_OFF;
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lws_led_transition(lds->bl_lcs, "backlight", &lws_pwmseq_static_off,
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&lws_pwmseq_static_on);
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disp->init(disp);
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}
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void
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lws_display_state_set_brightness(lws_display_state_t *lds,
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const lws_led_sequence_def_t *pwmseq)
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{
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lws_led_transition(lds->bl_lcs, "backlight", pwmseq,
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lds->disp->bl_transition);
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}
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void
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lws_display_state_active(lws_display_state_t *lds)
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{
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int waiting_ms;
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if (lds->state == LWSDISPS_OFF) {
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/* power us up */
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lds->disp->power(lds->disp, 1);
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lds->state = LWSDISPS_BECOMING_ACTIVE;
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waiting_ms = lds->disp->latency_wake_ms;
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} else {
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if (lds->state != LWSDISPS_ACTIVE)
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lws_display_state_set_brightness(lds,
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lds->disp->bl_active);
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lds->state = LWSDISPS_ACTIVE;
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waiting_ms = lds->autodim_ms;
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}
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/* reset the autodim timer */
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if (waiting_ms >= 0)
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lws_sul_schedule(lds->ctx, 0, &lds->sul_autodim, sul_autodim_cb,
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waiting_ms * LWS_US_PER_MS);
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}
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void
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lws_display_state_off(lws_display_state_t *lds)
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{
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lds->disp->power(lds->disp, 0);
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lws_sul_cancel(&lds->sul_autodim);
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lds->state = LWSDISPS_OFF;
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}
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