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 /* cdio returns some malloced strings that need to be free()d */
39 typedef struct CDIOContext {
41 cdrom_paranoia_t *paranoia;
49 static av_cold int read_header(AVFormatContext *ctx, AVFormatParameters *ap)
51 CDIOContext *s = ctx->priv_data;
56 if (!(st = avformat_new_stream(ctx, NULL)))
57 return AVERROR(ENOMEM);
58 s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err);
60 av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename);
61 return AVERROR(EINVAL);
64 av_log(ctx, AV_LOG_VERBOSE, "%s\n", err);
67 if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) {
68 av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename);
69 return AVERROR(EINVAL);
72 cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT);
74 cdio_cddap_speed_set(s->drive, s->speed);
76 s->paranoia = cdio_paranoia_init(s->drive);
78 av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n");
79 return AVERROR(EINVAL);
81 cdio_paranoia_modeset(s->paranoia, s->paranoia_mode);
83 st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
84 if (s->drive->bigendianp)
85 st->codec->codec_id = CODEC_ID_PCM_S16BE;
87 st->codec->codec_id = CODEC_ID_PCM_S16LE;
88 st->codec->sample_rate = 44100;
89 st->codec->channels = 2;
90 if (s->drive->audio_last_sector != CDIO_INVALID_LSN &&
91 s->drive->audio_first_sector != CDIO_INVALID_LSN)
92 st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector;
93 else if (s->drive->tracks)
94 st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector;
95 avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2*st->codec->channels*st->codec->sample_rate);
97 for (i = 0; i < s->drive->tracks; i++) {
99 snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack);
100 avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector,
101 s->drive->disc_toc[i+1].dwStartSector, title);
104 s->last_sector = cdio_cddap_disc_lastsector(s->drive);
109 static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
111 CDIOContext *s = ctx->priv_data;
116 if (ctx->streams[0]->cur_dts > s->last_sector)
119 buf = cdio_paranoia_read(s->paranoia, NULL);
123 if (err = cdio_cddap_errors(s->drive)) {
124 av_log(ctx, AV_LOG_ERROR, "%s\n", err);
128 if (err = cdio_cddap_messages(s->drive)) {
129 av_log(ctx, AV_LOG_VERBOSE, "%s\n", err);
134 if ((ret = av_new_packet(pkt, CDIO_CD_FRAMESIZE_RAW)) < 0)
136 memcpy(pkt->data, buf, CDIO_CD_FRAMESIZE_RAW);
140 static av_cold int read_close(AVFormatContext *ctx)
142 CDIOContext *s = ctx->priv_data;
143 cdio_paranoia_free(s->paranoia);
144 cdio_cddap_close(s->drive);
148 static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp,
151 CDIOContext *s = ctx->priv_data;
152 AVStream *st = ctx->streams[0];
154 cdio_paranoia_seek(s->paranoia, timestamp, SEEK_SET);
155 st->cur_dts = timestamp;
159 #define OFFSET(x) offsetof(CDIOContext, x)
160 #define DEC AV_OPT_FLAG_DECODING_PARAM
161 static const AVOption options[] = {
162 { "speed", "Drive reading speed.", OFFSET(speed), AV_OPT_TYPE_INT, { 0 }, 0, INT_MAX, DEC },
163 { "paranoia_mode", "Error recovery mode.", OFFSET(paranoia_mode), AV_OPT_TYPE_FLAGS, { 0 }, INT_MIN, INT_MAX, DEC, "paranoia_mode" },
164 { "verify", "Verify data integrity in overlap area", 0, AV_OPT_TYPE_CONST, { PARANOIA_MODE_VERIFY }, 0, 0, DEC, "paranoia_mode" },
165 { "overlap", "Perform overlapped reads.", 0, AV_OPT_TYPE_CONST, { PARANOIA_MODE_OVERLAP }, 0, 0, DEC, "paranoia_mode" },
166 { "neverskip", "Do not skip failed reads.", 0, AV_OPT_TYPE_CONST, { PARANOIA_MODE_NEVERSKIP }, 0, 0, DEC, "paranoia_mode" },
170 static const AVClass libcdio_class = {
171 .class_name = "libcdio indev",
172 .item_name = av_default_item_name,
174 .version = LIBAVUTIL_VERSION_INT,
177 AVInputFormat ff_libcdio_demuxer = {
179 .read_header = read_header,
180 .read_packet = read_packet,
181 .read_close = read_close,
182 .read_seek = read_seek,
183 .priv_data_size = sizeof(CDIOContext),
184 .flags = AVFMT_NOFILE,
185 .priv_class = &libcdio_class,