96 lines
4.2 KiB
C
96 lines
4.2 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "flv.h"
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#include "avc.h"
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#include "srt.h"
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#include "wonderland.h"
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#define SECONDS_PER_LINE 3.0
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srt_t* appennd_caption (const utf8_char_t* data, srt_t* prev, srt_t** head)
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{
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int r, c, chan = 0;
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ssize_t size = (ssize_t) strlen (data);
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size_t char_count, char_length, line_length = 0, trimmed_length = 0;
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for (r = 0 ; 0 < size && SCREEN_ROWS > r ; ++r) {
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line_length = utf8_line_length (data);
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trimmed_length = utf8_trimmed_length (data,line_length);
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char_count = utf8_char_count (data,trimmed_length);
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// If char_count is greater than one line can display, split it.
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if (SCREEN_COLS < char_count) {
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char_count = utf8_wrap_length (data,SCREEN_COLS);
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line_length = utf8_string_length (data,char_count+1);
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}
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// fprintf (stderr,"%.*s\n", line_length, data);
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prev = srt_new (data, line_length, prev ? prev->timestamp + SECONDS_PER_LINE : 0, prev, head);
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data += line_length;
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size -= (ssize_t) line_length;
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}
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return prev;
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}
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int main (int argc, char** argv)
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{
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int i = 0;
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flvtag_t tag;
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srt_t* head = 0, *tail = 0;
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int has_audio, has_video;
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FILE* flv = flv_open_read (argv[1]);
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FILE* out = flv_open_write (argv[2]);
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flvtag_init (&tag);
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for (i = 0 ; wonderland[i][0]; ++i) {
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tail = appennd_caption (wonderland[i], tail, &head);
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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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flv_write_header (out,has_audio,has_video);
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while (flv_read_tag (flv,&tag)) {
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if (head && flvtag_avcpackettype_nalu == flvtag_avcpackettype (&tag) && head->timestamp <= flvtag_pts_seconds (&tag)) {
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fprintf (stderr,"%f %s\n", flvtag_pts_seconds (&tag), srt_data (head));
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flvtag_addcaption (&tag, srt_data (head));
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head = srt_free_head (head);
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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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