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/*
* Copyright 1994-2022 Olivier Girondel
*
* This file is part of lebiniou.
*
* lebiniou is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* lebiniou is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with lebiniou. If not, see <http://www.gnu.org/licenses/>.
*/
#include "context.h"
uint32_t options = BO_NONE;
uint32_t version = 0;
char desc[] = "RTMP streaming";
#define FFMPEG_CHECK "ffmpeg -h >/dev/null 2>&1"
#define FFMPEG "ffmpeg"
#define RTMP_FFMPEG_ARGS "-loglevel quiet -re -vcodec ppm -f image2pipe -i pipe: -c:v libx264 -b:v 5M -pix_fmt yuv420p -c:a:0 libfdk_aac -b:a:0 480k -f flv"
#define RTMP_URL "rtmp://localhost/live/stream"
static FILE *rtmp = NULL;
static int8_t
open_rtmp(void)
{
char cmd[MAXLEN+1];
char *args = NULL, *url = NULL;
memset(&cmd, '\0', MAXLEN+1);
if (NULL == (args = getenv("LEBINIOU_RTMP_FFMPEG_ARGS"))) {
args = RTMP_FFMPEG_ARGS;
}
if (NULL == (url = getenv("LEBINIOU_RTMP_URL"))) {
url = RTMP_URL;
}
g_snprintf(cmd, MAXLEN, "%s %s %s", FFMPEG, args, url);
if (NULL == (rtmp = popen(cmd, "w"))) {
xperror("popen");
} else {
VERBOSE(printf("[i] %s: opened stream to %s\n", __FILE__, url));
VERBOSE(printf("[i] %s: ffmpeg args: '%s'\n", __FILE__, args));
}
return 1;
}
int8_t
create(Context_t *ctx)
{
if (check_command(FFMPEG_CHECK) == -1) {
printf("[!] %s: ffmpeg binary not found, plugin disabled\n", __FILE__);
return 0;
} else {
return open_rtmp();
}
}
void
destroy(Context_t *ctx)
{
if (NULL != rtmp)
if (-1 == pclose(rtmp)) {
xperror("pclose");
}
}
void
run(Context_t *ctx)
{
uint8_t *data;
char buff[MAXLEN+1];
size_t res;
/* get picture */
data = export_RGB_active_buffer(ctx, 1);
memset(&buff, '\0', MAXLEN+1);
g_snprintf(buff, MAXLEN, "P6 %d %d 255\n", WIDTH, HEIGHT);
/* PPM header */
res = fwrite((const void *)&buff, sizeof(char), strlen(buff), rtmp);
if (res != strlen(buff)) {
fprintf(stderr, "[!] %s:write_header: short write (%zu of %d)\n", __FILE__, res, (int)strlen(buff));
exit(1);
}
/* PPM data */
res = fwrite((const void *)data, sizeof(Pixel_t), RGB_BUFFSIZE, rtmp);
xfree(data);
if (res != RGB_BUFFSIZE) {
fprintf(stderr, "[!] %s:write_image: short write (%zu of %li)\n", __FILE__, res, RGB_BUFFSIZE);
exit(1);
}
fflush(rtmp);
}
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