camera-streamer/output/http_hls.c

47 lines
1.4 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include "output.h"
#include "util/opts/log.h"
#include "util/http/http.h"
#include "device/buffer.h"
#include "device/buffer_lock.h"
#include "device/buffer_list.h"
#include "device/device.h"
static const char *const CONTENT_TYPE = "application/x-mpegURL";
static const char *const STREAM_M3U8 =
"#EXTM3U\r\n" \
"#EXT-X-TARGETDURATION:1\r\n" \
"#EXT-X-VERSION:4\r\n" \
"#EXTINF:1.0,\r\n" \
"video.mp4?ts=%zu\r\n";
static const char *const LOCATION_REDIRECT =
"HTTP/1.0 307 Temporary Redirect\r\n"
"Access-Control-Allow-Origin: *\r\n"
"Connection: close\r\n"
"Location: %s\r\n"
"\r\n";
void http_m3u8_video(struct http_worker_s *worker, FILE *stream)
{
uint64_t ts = get_monotonic_time_us(NULL, NULL) / 1000 / 1000;
http_write_responsef(stream, "200 OK", CONTENT_TYPE, STREAM_M3U8, ts);
}
void http_detect_video(struct http_worker_s *worker, FILE *stream)
{
if (strstr(worker->user_agent, "Safari/") && !strstr(worker->user_agent, "Chrome/") && !strstr(worker->user_agent, "Chromium/")) {
// Safari only supports m3u8
fprintf(stream, LOCATION_REDIRECT, "video.m3u8");
} else if (strstr(worker->user_agent, "Firefox/")) {
// Firefox only supports mp4
fprintf(stream, LOCATION_REDIRECT, "video.mp4");
} else {
// Chrome offers best latency with mkv
fprintf(stream, LOCATION_REDIRECT, "video.mkv");
}
}