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1 | /* |
2 | * Copyright (c) 2013 Clément Bœsch | |
3 | * | |
4 | * This file is part of FFmpeg. | |
5 | * | |
6 | * FFmpeg is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * FFmpeg is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with FFmpeg; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <quvi/quvi.h> | |
22 | ||
23 | #include "libavformat/avformat.h" | |
24 | #include "libavformat/internal.h" | |
25 | #include "libavutil/opt.h" | |
26 | ||
27 | typedef struct { | |
28 | const AVClass *class; | |
29 | char *format; | |
30 | AVFormatContext *fmtctx; | |
31 | } LibQuviContext; | |
32 | ||
33 | #define OFFSET(x) offsetof(LibQuviContext, x) | |
34 | #define FLAGS AV_OPT_FLAG_DECODING_PARAM | |
35 | static const AVOption libquvi_options[] = { | |
36 | { "format", "request specific format", OFFSET(format), AV_OPT_TYPE_STRING, {.str="best"}, .flags = FLAGS }, | |
37 | { NULL } | |
38 | }; | |
39 | ||
40 | static const AVClass libquvi_context_class = { | |
41 | .class_name = "libquvi", | |
42 | .item_name = av_default_item_name, | |
43 | .option = libquvi_options, | |
44 | .version = LIBAVUTIL_VERSION_INT, | |
45 | }; | |
46 | ||
47 | static int libquvi_close(AVFormatContext *s) | |
48 | { | |
49 | LibQuviContext *qc = s->priv_data; | |
50 | if (qc->fmtctx) | |
51 | avformat_close_input(&qc->fmtctx); | |
52 | return 0; | |
53 | } | |
54 | ||
55 | static int libquvi_read_header(AVFormatContext *s) | |
56 | { | |
57 | int i, ret; | |
58 | quvi_t q; | |
59 | quvi_media_t m; | |
60 | QUVIcode rc; | |
61 | LibQuviContext *qc = s->priv_data; | |
62 | char *media_url, *pagetitle; | |
63 | ||
64 | rc = quvi_init(&q); | |
65 | if (rc != QUVI_OK) | |
66 | goto quvi_fail; | |
67 | ||
68 | quvi_setopt(q, QUVIOPT_FORMAT, qc->format); | |
69 | ||
70 | rc = quvi_parse(q, s->filename, &m); | |
71 | if (rc != QUVI_OK) | |
72 | goto quvi_fail; | |
73 | ||
74 | rc = quvi_getprop(m, QUVIPROP_MEDIAURL, &media_url); | |
75 | if (rc != QUVI_OK) | |
76 | goto quvi_fail; | |
77 | ||
78 | ret = avformat_open_input(&qc->fmtctx, media_url, NULL, NULL); | |
79 | if (ret < 0) | |
80 | goto end; | |
81 | ||
82 | rc = quvi_getprop(m, QUVIPROP_PAGETITLE, &pagetitle); | |
83 | if (rc == QUVI_OK) | |
84 | av_dict_set(&s->metadata, "title", pagetitle, 0); | |
85 | ||
86 | for (i = 0; i < qc->fmtctx->nb_streams; i++) { | |
87 | AVStream *st = avformat_new_stream(s, NULL); | |
88 | AVStream *ist = qc->fmtctx->streams[i]; | |
89 | if (!st) { | |
90 | ret = AVERROR(ENOMEM); | |
91 | goto end; | |
92 | } | |
93 | avpriv_set_pts_info(st, ist->pts_wrap_bits, ist->time_base.num, ist->time_base.den); | |
94 | avcodec_copy_context(st->codec, qc->fmtctx->streams[i]->codec); | |
95 | } | |
96 | ||
97 | return 0; | |
98 | ||
99 | quvi_fail: | |
100 | av_log(s, AV_LOG_ERROR, "%s\n", quvi_strerror(q, rc)); | |
101 | ret = AVERROR_EXTERNAL; | |
102 | ||
103 | end: | |
104 | quvi_parse_close(&m); | |
105 | quvi_close(&q); | |
106 | return ret; | |
107 | } | |
108 | ||
109 | static int libquvi_read_packet(AVFormatContext *s, AVPacket *pkt) | |
110 | { | |
111 | LibQuviContext *qc = s->priv_data; | |
112 | return av_read_frame(qc->fmtctx, pkt); | |
113 | } | |
114 | ||
115 | static int libquvi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags) | |
116 | { | |
117 | LibQuviContext *qc = s->priv_data; | |
118 | return av_seek_frame(qc->fmtctx, stream_index, timestamp, flags); | |
119 | } | |
120 | ||
121 | static int libquvi_probe(AVProbeData *p) | |
122 | { | |
123 | int score; | |
124 | quvi_t q; | |
125 | QUVIcode rc; | |
126 | ||
127 | rc = quvi_init(&q); | |
128 | if (rc != QUVI_OK) | |
129 | return AVERROR(ENOMEM); | |
130 | score = quvi_supported(q, (char *)p->filename) == QUVI_OK ? AVPROBE_SCORE_EXTENSION : 0; | |
131 | quvi_close(&q); | |
132 | return score; | |
133 | } | |
134 | ||
135 | AVInputFormat ff_libquvi_demuxer = { | |
136 | .name = "libquvi", | |
137 | .long_name = NULL_IF_CONFIG_SMALL("libquvi demuxer"), | |
138 | .priv_data_size = sizeof(LibQuviContext), | |
139 | .read_probe = libquvi_probe, | |
140 | .read_header = libquvi_read_header, | |
141 | .read_packet = libquvi_read_packet, | |
142 | .read_close = libquvi_close, | |
143 | .read_seek = libquvi_read_seek, | |
144 | .priv_class = &libquvi_context_class, | |
145 | .flags = AVFMT_NOFILE, | |
146 | }; |