2 * Copyright (c) 2011 Anton Khirnov <anton@khirnov.net>
4 * This file is part of Libav.
6 * Libav 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.
11 * Libav 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include <cdio/cdda.h>
27 #include <cdio/paranoia.h>
29 #include "libavutil/log.h"
30 #include "libavutil/mem.h"
31 #include "libavutil/opt.h"
33 #include "libavformat/avformat.h"
34 #include "libavformat/internal.h"
36 typedef struct CDIOContext {
39 cdrom_paranoia_t *paranoia;
47 static av_cold int read_header(AVFormatContext *ctx)
49 CDIOContext *s = ctx->priv_data;
54 if (!(st = avformat_new_stream(ctx, NULL)))
55 return AVERROR(ENOMEM);
56 s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err);
58 av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename);
59 return AVERROR(EINVAL);
62 av_log(ctx, AV_LOG_VERBOSE, "%s\n", err);
65 if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) {
66 av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename);
67 return AVERROR(EINVAL);
70 cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT);
72 cdio_cddap_speed_set(s->drive, s->speed);
74 s->paranoia = cdio_paranoia_init(s->drive);
76 av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n");
77 return AVERROR(EINVAL);
79 cdio_paranoia_modeset(s->paranoia, s->paranoia_mode);
81 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
82 if (s->drive->bigendianp)
83 st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
85 st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
86 st->codec->sample_rate = 44100;
87 st->codec->channels = 2;
88 if (s->drive->audio_last_sector != CDIO_INVALID_LSN &&
89 s->drive->audio_first_sector != CDIO_INVALID_LSN)
90 st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector;
91 else if (s->drive->tracks)
92 st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector;
93 avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2*st->codec->channels*st->codec->sample_rate);
95 for (i = 0; i < s->drive->tracks; i++) {
97 snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack);
98 avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector,
99 s->drive->disc_toc[i+1].dwStartSector, title);
102 s->last_sector = cdio_cddap_disc_lastsector(s->drive);
107 static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
109 CDIOContext *s = ctx->priv_data;
114 if (ctx->streams[0]->cur_dts > s->last_sector)
117 buf = cdio_paranoia_read(s->paranoia, NULL);
121 if (err = cdio_cddap_errors(s->drive)) {
122 av_log(ctx, AV_LOG_ERROR, "%s\n", err);
126 if (err = cdio_cddap_messages(s->drive)) {
127 av_log(ctx, AV_LOG_VERBOSE, "%s\n", err);
132 if ((ret = av_new_packet(pkt, CDIO_CD_FRAMESIZE_RAW)) < 0)
134 memcpy(pkt->data, buf, CDIO_CD_FRAMESIZE_RAW);
138 static av_cold int read_close(AVFormatContext *ctx)
140 CDIOContext *s = ctx->priv_data;
141 cdio_paranoia_free(s->paranoia);
142 cdio_cddap_close(s->drive);
146 static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp,
149 CDIOContext *s = ctx->priv_data;
150 AVStream *st = ctx->streams[0];
152 cdio_paranoia_seek(s->paranoia, timestamp, SEEK_SET);
153 st->cur_dts = timestamp;
157 #define OFFSET(x) offsetof(CDIOContext, x)
158 #define DEC AV_OPT_FLAG_DECODING_PARAM
159 static const AVOption options[] = {
160 { "speed", "Drive reading speed.", OFFSET(speed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, DEC },
161 { "paranoia_mode", "Error recovery mode.", OFFSET(paranoia_mode), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, DEC, "paranoia_mode" },
162 { "verify", "Verify data integrity in overlap area", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_VERIFY }, 0, 0, DEC, "paranoia_mode" },
163 { "overlap", "Perform overlapped reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_OVERLAP }, 0, 0, DEC, "paranoia_mode" },
164 { "neverskip", "Do not skip failed reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_NEVERSKIP }, 0, 0, DEC, "paranoia_mode" },
168 static const AVClass libcdio_class = {
169 .class_name = "libcdio indev",
170 .item_name = av_default_item_name,
172 .version = LIBAVUTIL_VERSION_INT,
175 AVInputFormat ff_libcdio_demuxer = {
177 .read_header = read_header,
178 .read_packet = read_packet,
179 .read_close = read_close,
180 .read_seek = read_seek,
181 .priv_data_size = sizeof(CDIOContext),
182 .flags = AVFMT_NOFILE,
183 .priv_class = &libcdio_class,