/* * Copyright (c) 2012 Martin Storsjo * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <stdio.h> #include <stdlib.h> #include "libavutil/time.h" #include "libavformat/avformat.h" static int usage(const char *argv0, int ret) { fprintf(stderr, "%s [-b bytespersec] [-d duration] input_url output_url\n", argv0); return ret; } int main(int argc, char **argv) { int bps = 0, duration = 0, ret, i; const char *input_url = NULL, *output_url = NULL; int64_t stream_pos = 0; int64_t start_time; char errbuf[50]; AVIOContext *input, *output; av_register_all(); avformat_network_init(); for (i = 1; i < argc; i++) { if (!strcmp(argv[i], "-b") && i + 1 < argc) { bps = atoi(argv[i + 1]); i++; } else if (!strcmp(argv[i], "-d") && i + 1 < argc) { duration = atoi(argv[i + 1]); i++; } else if (!input_url) { input_url = argv[i]; } else if (!output_url) { output_url = argv[i]; } else { return usage(argv[0], 1); } } if (!output_url) return usage(argv[0], 1); ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, NULL); if (ret) { av_strerror(ret, errbuf, sizeof(errbuf)); fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf); return 1; } if (duration && !bps) { int64_t size = avio_size(input); if (size < 0) { av_strerror(ret, errbuf, sizeof(errbuf)); fprintf(stderr, "Unable to get size of %s: %s\n", input_url, errbuf); goto fail; } bps = size / duration; } ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, NULL); if (ret) { av_strerror(ret, errbuf, sizeof(errbuf)); fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf); goto fail; } start_time = av_gettime(); while (1) { uint8_t buf[1024]; int n; n = avio_read(input, buf, sizeof(buf)); if (n <= 0) break; avio_write(output, buf, n); stream_pos += n; if (bps) { avio_flush(output); while ((av_gettime() - start_time) * bps / AV_TIME_BASE < stream_pos) av_usleep(50 * 1000); } } avio_flush(output); avio_close(output); fail: avio_close(input); avformat_network_deinit(); return ret ? 1 : 0; }