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1 | /* |
2 | * Copyright (c) 2003 Fabrice Bellard | |
3 | * Copyright (c) 2007 Michael Niedermayer | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include <stdint.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <string.h> | |
26 | ||
27 | #include "libavutil/common.h" | |
28 | #include "libavutil/mathematics.h" | |
29 | #include "libavformat/avformat.h" | |
30 | ||
31 | static char buffer[20]; | |
32 | ||
33 | static const char *ret_str(int v) | |
34 | { | |
35 | switch (v) { | |
36 | case AVERROR_EOF: return "-EOF"; | |
37 | case AVERROR(EIO): return "-EIO"; | |
38 | case AVERROR(ENOMEM): return "-ENOMEM"; | |
39 | case AVERROR(EINVAL): return "-EINVAL"; | |
40 | default: | |
41 | snprintf(buffer, sizeof(buffer), "%2d", v); | |
42 | return buffer; | |
43 | } | |
44 | } | |
45 | ||
46 | static void ts_str(char buffer[60], int64_t ts, AVRational base) | |
47 | { | |
48 | if (ts == AV_NOPTS_VALUE) { | |
49 | strcpy(buffer, " NOPTS "); | |
50 | return; | |
51 | } | |
52 | ts= av_rescale_q(ts, base, (AVRational){1, 1000000}); | |
53 | snprintf(buffer, 60, "%c%"PRId64".%06"PRId64"", ts<0 ? '-' : ' ', FFABS(ts)/1000000, FFABS(ts)%1000000); | |
54 | } | |
55 | ||
56 | int main(int argc, char **argv) | |
57 | { | |
58 | const char *filename; | |
59 | AVFormatContext *ic = NULL; | |
60 | int i, ret, stream_id; | |
61 | int j; | |
62 | int64_t timestamp; | |
63 | AVDictionary *format_opts = NULL; | |
64 | int64_t seekfirst = AV_NOPTS_VALUE; | |
65 | int firstback=0; | |
66 | int frame_count = 1; | |
67 | int duration = 4; | |
68 | ||
69 | for(i=2; i<argc; i+=2){ | |
70 | if (!strcmp(argv[i], "-seekforw")){ | |
71 | seekfirst = atoi(argv[i+1]); | |
72 | } else if(!strcmp(argv[i], "-seekback")){ | |
73 | seekfirst = atoi(argv[i+1]); | |
74 | firstback = 1; | |
75 | } else if(!strcmp(argv[i], "-frames")){ | |
76 | frame_count = atoi(argv[i+1]); | |
77 | } else if(!strcmp(argv[i], "-duration")){ | |
78 | duration = atoi(argv[i+1]); | |
79 | } else { | |
80 | argc = 1; | |
81 | } | |
82 | } | |
83 | ||
84 | av_dict_set(&format_opts, "channels", "1", 0); | |
85 | av_dict_set(&format_opts, "sample_rate", "22050", 0); | |
86 | ||
87 | /* initialize libavcodec, and register all codecs and formats */ | |
88 | av_register_all(); | |
89 | ||
90 | if (argc < 2) { | |
91 | printf("usage: %s input_file\n" | |
92 | "\n", argv[0]); | |
93 | return 1; | |
94 | } | |
95 | ||
96 | filename = argv[1]; | |
97 | ||
98 | ret = avformat_open_input(&ic, filename, NULL, &format_opts); | |
99 | av_dict_free(&format_opts); | |
100 | if (ret < 0) { | |
101 | fprintf(stderr, "cannot open %s\n", filename); | |
102 | return 1; | |
103 | } | |
104 | ||
105 | ret = avformat_find_stream_info(ic, NULL); | |
106 | if (ret < 0) { | |
107 | fprintf(stderr, "%s: could not find codec parameters\n", filename); | |
108 | return 1; | |
109 | } | |
110 | ||
111 | if(seekfirst != AV_NOPTS_VALUE){ | |
112 | if(firstback) avformat_seek_file(ic, -1, INT64_MIN, seekfirst, seekfirst, 0); | |
113 | else avformat_seek_file(ic, -1, seekfirst, seekfirst, INT64_MAX, 0); | |
114 | } | |
115 | for(i=0; ; i++){ | |
116 | AVPacket pkt = { 0 }; | |
117 | AVStream *av_uninit(st); | |
118 | char ts_buf[60]; | |
119 | ||
120 | if(ret>=0){ | |
121 | for(j=0; j<frame_count; j++) { | |
122 | ret= av_read_frame(ic, &pkt); | |
123 | if(ret>=0){ | |
124 | char dts_buf[60]; | |
125 | st= ic->streams[pkt.stream_index]; | |
126 | ts_str(dts_buf, pkt.dts, st->time_base); | |
127 | ts_str(ts_buf, pkt.pts, st->time_base); | |
128 | printf("ret:%-10s st:%2d flags:%d dts:%s pts:%s pos:%7" PRId64 " size:%6d", ret_str(ret), pkt.stream_index, pkt.flags, dts_buf, ts_buf, pkt.pos, pkt.size); | |
129 | av_free_packet(&pkt); | |
130 | } else | |
131 | printf("ret:%s", ret_str(ret)); // necessary to avoid trailing whitespace | |
132 | printf("\n"); | |
133 | } | |
134 | } | |
135 | ||
136 | if(i>25) break; | |
137 | ||
138 | stream_id= (i>>1)%(ic->nb_streams+1) - 1; | |
139 | timestamp= (i*19362894167LL) % (duration*AV_TIME_BASE) - AV_TIME_BASE; | |
140 | if(stream_id>=0){ | |
141 | st= ic->streams[stream_id]; | |
142 | timestamp= av_rescale_q(timestamp, AV_TIME_BASE_Q, st->time_base); | |
143 | } | |
144 | //FIXME fully test the new seek API | |
145 | if(i&1) ret = avformat_seek_file(ic, stream_id, INT64_MIN, timestamp, timestamp, 0); | |
146 | else ret = avformat_seek_file(ic, stream_id, timestamp, timestamp, INT64_MAX, 0); | |
147 | ts_str(ts_buf, timestamp, stream_id < 0 ? AV_TIME_BASE_Q : st->time_base); | |
148 | printf("ret:%-10s st:%2d flags:%d ts:%s\n", ret_str(ret), stream_id, i&1, ts_buf); | |
149 | } | |
150 | ||
151 | avformat_close_input(&ic); | |
152 | ||
153 | return 0; | |
154 | } |