mirror of
https://github.com/owntone/owntone-server.git
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128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
/*
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* Copyright (C) 2020 Espen Jurgensen
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <string.h>
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#include <event2/buffer.h>
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#include "misc.h"
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#include "logger.h"
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#include "input.h"
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#define TIMER_NOISE_INTERVAL 5
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#define TIMER_METADATA_INTERVAL 30
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#define TIMER_SAMPLE_RATE 44100
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#define TIMER_BPS 16
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#define TIMER_CHANNELS 2
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#define TIMER_BUFSIZE (STOB(TIMER_SAMPLE_RATE, TIMER_BPS, TIMER_CHANNELS) / 20)
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struct timer_ctx
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{
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uint8_t silence[TIMER_BUFSIZE];
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uint8_t noise[TIMER_BUFSIZE];
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uint64_t pos;
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};
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static int
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setup(struct input_source *source)
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{
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struct timer_ctx *ctx;
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ctx = calloc(1, sizeof(struct timer_ctx));
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if (!ctx)
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return -1;
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memset(&ctx->noise, 0x88, TIMER_BUFSIZE);
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CHECK_NULL(L_PLAYER, source->evbuf = evbuffer_new());
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source->quality.sample_rate = TIMER_SAMPLE_RATE;
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source->quality.bits_per_sample = TIMER_BPS;
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source->quality.channels = TIMER_CHANNELS;
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source->input_ctx = ctx;
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return 0;
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}
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static int
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stop(struct input_source *source)
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{
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struct timer_ctx *ctx = source->input_ctx;
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free(ctx);
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if (source->evbuf)
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evbuffer_free(source->evbuf);
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source->input_ctx = NULL;
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source->evbuf = NULL;
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return 0;
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}
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static int
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play(struct input_source *source)
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{
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struct timer_ctx *ctx = source->input_ctx;
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short flags;
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if (ctx->pos % (TIMER_METADATA_INTERVAL * source->quality.sample_rate) == 0)
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flags = INPUT_FLAG_METADATA;
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else
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flags = 0;
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if (ctx->pos % (TIMER_NOISE_INTERVAL * source->quality.sample_rate) == 0)
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evbuffer_add(source->evbuf, ctx->noise, TIMER_BUFSIZE);
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else
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evbuffer_add(source->evbuf, ctx->silence, TIMER_BUFSIZE);
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ctx->pos += BTOS(TIMER_BUFSIZE, TIMER_BPS, TIMER_CHANNELS);
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input_write(source->evbuf, &source->quality, flags);
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return 0;
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}
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static int
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metadata_get(struct input_metadata *metadata, struct input_source *source)
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{
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metadata->title = strdup("Timing test");
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metadata->pos_is_updated = true;
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metadata->pos_ms = 0;
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metadata->len_ms = TIMER_METADATA_INTERVAL * 1000;
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return 0;
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}
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struct input_definition input_timer =
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{
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.name = "timer",
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.type = INPUT_TYPE_TIMER,
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.disabled = 0,
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.setup = setup,
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.play = play,
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.stop = stop,
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.metadata_get = metadata_get,
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};
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