90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
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/*******************************************************************************
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# #
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# MJPG-streamer allows to stream JPG frames from an input-plugin #
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# to several output plugins #
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# #
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# Copyright (C) 2007 Tom Stöveken #
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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; version 2 of the License. #
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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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*******************************************************************************/
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#include <syslog.h>
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#include "../mjpg_streamer.h"
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#define INPUT_PLUGIN_PREFIX " i: "
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#define IPRINT(...) { char _bf[1024] = {0}; snprintf(_bf, sizeof(_bf)-1, __VA_ARGS__); fprintf(stderr, "%s", INPUT_PLUGIN_PREFIX); fprintf(stderr, "%s", _bf); syslog(LOG_INFO, "%s", _bf); }
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/* parameters for input plugin */
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typedef struct _input_parameter input_parameter;
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struct _input_parameter {
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int id;
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char *parameters;
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int argc;
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char *argv[MAX_PLUGIN_ARGUMENTS];
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struct _globals *global;
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};
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typedef struct _input_resolution input_resolution;
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struct _input_resolution {
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unsigned int width;
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unsigned int height;
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};
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typedef struct _input_format input_format;
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struct _input_format {
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struct v4l2_fmtdesc format;
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input_resolution *supportedResolutions;
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int resolutionCount;
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char currentResolution;
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};
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/* structure to store variables/functions for input plugin */
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typedef struct _input input;
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struct _input {
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char *plugin;
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char *name;
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void *handle;
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input_parameter param; // this holds the command line arguments
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// input plugin parameters
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struct _control *in_parameters;
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int parametercount;
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struct v4l2_jpegcompression jpegcomp;
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/* signal fresh frames */
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pthread_mutex_t db;
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pthread_cond_t db_update;
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/* global JPG frame, this is more or less the "database" */
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unsigned char *buf;
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int size;
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/* v4l2_buffer timestamp */
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struct timeval timestamp;
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input_format *in_formats;
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int formatCount;
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int currentFormat; // holds the current format number
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void *context; // private data for the plugin
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int (*init)(input_parameter *, int id);
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int (*stop)(int);
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int (*run)(int);
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int (*cmd)(int plugin, unsigned int control_id, unsigned int group, int value, char *value_str);
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};
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