117 lines
4.7 KiB
C
117 lines
4.7 KiB
C
/**********************************************************************************************/
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/* The MIT License */
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/* */
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/* Copyright 2016-2016 Twitch Interactive, Inc. or its affiliates. All Rights Reserved. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining a copy */
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/* of this software and associated documentation files (the "Software"), to deal */
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/* in the Software without restriction, including without limitation the rights */
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/* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell */
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/* copies of the Software, and to permit persons to whom the Software is */
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/* furnished to do so, subject to the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be included in */
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/* all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
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/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
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/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
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/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
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/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN */
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/* THE SOFTWARE. */
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/**********************************************************************************************/
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <linux/input.h>
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#include <string.h>
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#include <stdio.h>
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#include "caption.h"
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#include "flv.h"
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char charcode[] = {
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0, 0, '1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=', 0, 0,
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'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '[', ']','\n', 0, 'A', 'S',
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'D', 'F', 'G', 'H', 'J', 'K', 'L', ';', '\'', '`', 0, '\\', 'Z', 'X', 'C', 'V',
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'B', 'N', 'M', ',', '.', '/', 0, '*', 0, ' ', 0, 0, 0, 0, 0, 0,
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};
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int data_ready (int fd)
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{
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fd_set set;
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struct timeval timeout = {0,0};
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FD_ZERO (&set);
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FD_SET (fd,&set);
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int cnt = select (fd+1, &set, 0, 0, &timeout);
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FD_ZERO (&set);
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return (0 < cnt);
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}
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#define MAX_CAP_LENGTH (SCREEN_ROWS*SCREEN_COLS)
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int main (int argc, char** argv)
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{
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int fd;
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ssize_t n;
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flvtag_t tag;
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struct input_event ev;
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int has_audio, has_video;
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const char* dev = argv[1];
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char text[MAX_CAP_LENGTH+1];
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memset (text,0,MAX_CAP_LENGTH+1);
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FILE* flv = flv_open_read ("-");
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FILE* out = flv_open_write ("-");
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fd = open (dev, O_RDONLY);
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if (fd == -1) {
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fprintf (stderr, "Cannot open %s: %s.\n", dev, strerror (errno));
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return EXIT_FAILURE;
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}
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if (!flv_read_header (flv,&has_audio,&has_video)) {
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fprintf (stderr,"%s is not an flv file\n", argv[1]);
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return EXIT_FAILURE;
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}
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if (!flv_write_header (out,has_audio,has_video)) {
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return EXIT_FAILURE;
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}
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flvtag_init (&tag);
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while (flv_read_tag (flv,&tag)) {
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if (flvtag_avcpackettype_nalu == flvtag_avcpackettype (&tag)) {
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if (data_ready (fd)) {
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n = read (fd, &ev, sizeof ev);
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if (n == (ssize_t)-1) {
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if (errno == EINTR) {
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continue;
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} else {
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break;
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}
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} else if (n != sizeof ev) {
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errno = EIO;
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break;
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}
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int len = strlen (text);
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char c = (EV_KEY == ev.type && 1 == ev.value && ev.code < 64) ? charcode[ev.code] : 0;
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if (0 < len && '\n' == c) {
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fprintf (stderr,"='%s'\n", text);
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flvtag_addcaption (&tag, text);
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memset (text,0,MAX_CAP_LENGTH+1);
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} else if (0 != c && len < MAX_CAP_LENGTH) {
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text[len] = c;
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}
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}
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}
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flv_write_tag (out,&tag);
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}
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return EXIT_SUCCESS;
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}
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