blob: f6d4fce25629ff3b3ab85b4f403c27165d2b467d
1 | /* |
2 | * Copyright (c) 2011 Anton Khirnov <anton@khirnov.net> |
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 | /** |
22 | * @file |
23 | * libcdio CD grabbing |
24 | */ |
25 | |
26 | #include "config.h" |
27 | |
28 | #if HAVE_CDIO_PARANOIA_H |
29 | #include <cdio/cdda.h> |
30 | #include <cdio/paranoia.h> |
31 | #elif HAVE_CDIO_PARANOIA_PARANOIA_H |
32 | #include <cdio/paranoia/cdda.h> |
33 | #include <cdio/paranoia/paranoia.h> |
34 | #endif |
35 | |
36 | #include "libavutil/log.h" |
37 | #include "libavutil/mem.h" |
38 | #include "libavutil/opt.h" |
39 | |
40 | #include "libavformat/avformat.h" |
41 | #include "libavformat/internal.h" |
42 | |
43 | typedef struct CDIOContext { |
44 | const AVClass *class; |
45 | cdrom_drive_t *drive; |
46 | cdrom_paranoia_t *paranoia; |
47 | int32_t last_sector; |
48 | |
49 | /* private options */ |
50 | int speed; |
51 | int paranoia_mode; |
52 | } CDIOContext; |
53 | |
54 | static av_cold int read_header(AVFormatContext *ctx) |
55 | { |
56 | CDIOContext *s = ctx->priv_data; |
57 | AVStream *st; |
58 | int ret, i; |
59 | char *err = NULL; |
60 | |
61 | if (!(st = avformat_new_stream(ctx, NULL))) |
62 | return AVERROR(ENOMEM); |
63 | s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err); |
64 | if (!s->drive) { |
65 | av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename); |
66 | return AVERROR(EINVAL); |
67 | } |
68 | if (err) { |
69 | av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
70 | free(err); |
71 | } |
72 | if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) { |
73 | av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename); |
74 | return AVERROR(EINVAL); |
75 | } |
76 | |
77 | cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT); |
78 | if (s->speed) |
79 | cdio_cddap_speed_set(s->drive, s->speed); |
80 | |
81 | s->paranoia = cdio_paranoia_init(s->drive); |
82 | if (!s->paranoia) { |
83 | av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n"); |
84 | return AVERROR(EINVAL); |
85 | } |
86 | cdio_paranoia_modeset(s->paranoia, s->paranoia_mode); |
87 | |
88 | st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
89 | if (s->drive->bigendianp) |
90 | st->codecpar->codec_id = AV_CODEC_ID_PCM_S16BE; |
91 | else |
92 | st->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE; |
93 | st->codecpar->sample_rate = 44100; |
94 | st->codecpar->channels = 2; |
95 | if (s->drive->audio_last_sector != CDIO_INVALID_LSN && |
96 | s->drive->audio_first_sector != CDIO_INVALID_LSN) |
97 | st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector; |
98 | else if (s->drive->tracks) |
99 | st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector; |
100 | avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2 * st->codecpar->channels * st->codecpar->sample_rate); |
101 | |
102 | for (i = 0; i < s->drive->tracks; i++) { |
103 | char title[16]; |
104 | snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack); |
105 | avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector, |
106 | s->drive->disc_toc[i+1].dwStartSector, title); |
107 | } |
108 | |
109 | s->last_sector = cdio_cddap_disc_lastsector(s->drive); |
110 | |
111 | return 0; |
112 | } |
113 | |
114 | static int read_packet(AVFormatContext *ctx, AVPacket *pkt) |
115 | { |
116 | CDIOContext *s = ctx->priv_data; |
117 | int ret; |
118 | uint16_t *buf; |
119 | char *err = NULL; |
120 | |
121 | if (ctx->streams[0]->cur_dts > s->last_sector) |
122 | return AVERROR_EOF; |
123 | |
124 | buf = cdio_paranoia_read(s->paranoia, NULL); |
125 | if (!buf) |
126 | return AVERROR_EOF; |
127 | |
128 | if (err = cdio_cddap_errors(s->drive)) { |
129 | av_log(ctx, AV_LOG_ERROR, "%s\n", err); |
130 | free(err); |
131 | err = NULL; |
132 | } |
133 | if (err = cdio_cddap_messages(s->drive)) { |
134 | av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
135 | free(err); |
136 | err = NULL; |
137 | } |
138 | |
139 | if ((ret = av_new_packet(pkt, CDIO_CD_FRAMESIZE_RAW)) < 0) |
140 | return ret; |
141 | memcpy(pkt->data, buf, CDIO_CD_FRAMESIZE_RAW); |
142 | return 0; |
143 | } |
144 | |
145 | static av_cold int read_close(AVFormatContext *ctx) |
146 | { |
147 | CDIOContext *s = ctx->priv_data; |
148 | cdio_paranoia_free(s->paranoia); |
149 | cdio_cddap_close(s->drive); |
150 | return 0; |
151 | } |
152 | |
153 | static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, |
154 | int flags) |
155 | { |
156 | CDIOContext *s = ctx->priv_data; |
157 | AVStream *st = ctx->streams[0]; |
158 | |
159 | cdio_paranoia_seek(s->paranoia, timestamp, SEEK_SET); |
160 | st->cur_dts = timestamp; |
161 | return 0; |
162 | } |
163 | |
164 | #define OFFSET(x) offsetof(CDIOContext, x) |
165 | #define DEC AV_OPT_FLAG_DECODING_PARAM |
166 | static const AVOption options[] = { |
167 | { "speed", "set drive reading speed", OFFSET(speed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, DEC }, |
168 | { "paranoia_mode", "set error recovery mode", OFFSET(paranoia_mode), AV_OPT_TYPE_FLAGS, { .i64 = PARANOIA_MODE_DISABLE }, INT_MIN, INT_MAX, DEC, "paranoia_mode" }, |
169 | { "disable", "apply no fixups", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_DISABLE }, 0, 0, DEC, "paranoia_mode" }, |
170 | { "verify", "verify data integrity in overlap area", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_VERIFY }, 0, 0, DEC, "paranoia_mode" }, |
171 | { "overlap", "perform overlapped reads", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_OVERLAP }, 0, 0, DEC, "paranoia_mode" }, |
172 | { "neverskip", "do not skip failed reads", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_NEVERSKIP }, 0, 0, DEC, "paranoia_mode" }, |
173 | { "full", "apply all recovery modes", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_FULL }, 0, 0, DEC, "paranoia_mode" }, |
174 | { NULL }, |
175 | }; |
176 | |
177 | static const AVClass libcdio_class = { |
178 | .class_name = "libcdio indev", |
179 | .item_name = av_default_item_name, |
180 | .option = options, |
181 | .version = LIBAVUTIL_VERSION_INT, |
182 | .category = AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT, |
183 | }; |
184 | |
185 | AVInputFormat ff_libcdio_demuxer = { |
186 | .name = "libcdio", |
187 | .read_header = read_header, |
188 | .read_packet = read_packet, |
189 | .read_close = read_close, |
190 | .read_seek = read_seek, |
191 | .priv_data_size = sizeof(CDIOContext), |
192 | .flags = AVFMT_NOFILE, |
193 | .priv_class = &libcdio_class, |
194 | }; |
195 |