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00021 #include <stdio.h>
00022 #include <stdlib.h>
00023 #include <unistd.h>
00024 #include "libavformat/avformat.h"
00025
00026 static int usage(const char *argv0, int ret)
00027 {
00028 fprintf(stderr, "%s [-b bytespersec] input_url output_url\n", argv0);
00029 return ret;
00030 }
00031
00032 int main(int argc, char **argv)
00033 {
00034 int bps = 0, ret, i;
00035 const char *input_url = NULL, *output_url = NULL;
00036 int64_t stream_pos = 0;
00037 int64_t start_time;
00038 char errbuf[50];
00039 AVIOContext *input, *output;
00040
00041 av_register_all();
00042 avformat_network_init();
00043
00044 for (i = 1; i < argc; i++) {
00045 if (!strcmp(argv[i], "-b")) {
00046 bps = atoi(argv[i + 1]);
00047 i++;
00048 } else if (!input_url) {
00049 input_url = argv[i];
00050 } else if (!output_url) {
00051 output_url = argv[i];
00052 } else {
00053 return usage(argv[0], 1);
00054 }
00055 }
00056 if (!output_url)
00057 return usage(argv[0], 1);
00058
00059 ret = avio_open2(&input, input_url, AVIO_FLAG_READ, NULL, NULL);
00060 if (ret) {
00061 av_strerror(ret, errbuf, sizeof(errbuf));
00062 fprintf(stderr, "Unable to open %s: %s\n", input_url, errbuf);
00063 return 1;
00064 }
00065 ret = avio_open2(&output, output_url, AVIO_FLAG_WRITE, NULL, NULL);
00066 if (ret) {
00067 av_strerror(ret, errbuf, sizeof(errbuf));
00068 fprintf(stderr, "Unable to open %s: %s\n", output_url, errbuf);
00069 goto fail;
00070 }
00071
00072 start_time = av_gettime();
00073 while (1) {
00074 uint8_t buf[1024];
00075 int n;
00076 n = avio_read(input, buf, sizeof(buf));
00077 if (n <= 0)
00078 break;
00079 avio_write(output, buf, n);
00080 stream_pos += n;
00081 if (bps) {
00082 avio_flush(output);
00083 while ((av_gettime() - start_time)*bps/AV_TIME_BASE < stream_pos)
00084 usleep(50*1000);
00085 }
00086 }
00087
00088 avio_flush(output);
00089 avio_close(output);
00090 fail:
00091 avio_close(input);
00092 avformat_network_deinit();
00093 return ret ? 1 : 0;
00094 }