127 lines
2.7 KiB
C
127 lines
2.7 KiB
C
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/*
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* Copyright (C) 2014 Espen Jürgensen <espenjurgensen@gmail.com>
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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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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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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 <fcntl.h>
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#include <string.h>
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#include <time.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include "pipe.h"
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#include "logger.h"
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#define PIPE_BUFFER_SIZE 8192
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static int g_fd = -1;
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static void *g_buf = NULL;
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int
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pipe_setup(struct media_file_info *mfi)
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{
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struct stat sb;
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if (!mfi->path)
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{
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DPRINTF(E_LOG, L_PLAYER, "Path to pipe is NULL\n");
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return -1;
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}
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DPRINTF(E_DBG, L_PLAYER, "Setting up pipe: %s\n", mfi->path);
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if (lstat(mfi->path, &sb) < 0)
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{
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DPRINTF(E_LOG, L_PLAYER, "Could not lstat() '%s': %s\n", mfi->path, strerror(errno));
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return -1;
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}
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if (!S_ISFIFO(sb.st_mode))
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{
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DPRINTF(E_LOG, L_PLAYER, "Source type is pipe, but path is not a fifo: %s\n", mfi->path);
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return -1;
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}
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g_fd = open(mfi->path, O_RDONLY);
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if (g_fd < 0)
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{
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DPRINTF(E_LOG, L_PLAYER, "Could not open pipe for reading '%s': %s\n", mfi->path, strerror(errno));
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return -1;
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}
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g_buf = (void *)malloc(PIPE_BUFFER_SIZE);
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if (!g_buf)
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{
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DPRINTF(E_LOG, L_PLAYER, "Out of memory for buffer\n");
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return -1;
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}
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return 1;
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}
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void
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pipe_cleanup(void)
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{
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if (g_fd >= 0)
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close(g_fd);
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g_fd = -1;
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if (g_buf)
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free(g_buf);
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g_buf = NULL;
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return;
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}
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int
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pipe_audio_get(struct evbuffer *evbuf, int wanted)
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{
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int got;
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if (wanted > PIPE_BUFFER_SIZE)
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wanted = PIPE_BUFFER_SIZE;
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got = read(g_fd, g_buf, wanted);
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if (got < 0)
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{
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DPRINTF(E_LOG, L_PLAYER, "Could not read from pipe: %s\n", strerror(errno));
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return -1;
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}
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// If the other end of the pipe is not writing we just return silence
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if (got == 0)
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{
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memset(g_buf, 0, wanted);
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got = wanted;
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}
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evbuffer_add(evbuf, g_buf, got);
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return got;
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}
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