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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Copyright (c) 2011 Anton Khirnov |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | /** |
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| 22 | * @file |
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| 23 | * libcdio CD grabbing |
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| 24 | */ |
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| 25 | |||
| 26 | #include "config.h" |
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| 27 | |||
| 28 | #if HAVE_CDIO_PARANOIA_H |
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| 29 | #include |
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| 30 | #include |
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| 31 | #elif HAVE_CDIO_PARANOIA_PARANOIA_H |
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| 32 | #include |
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| 33 | #include |
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| 34 | #endif |
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| 35 | |||
| 36 | #include "libavutil/log.h" |
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| 37 | #include "libavutil/mem.h" |
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| 38 | #include "libavutil/opt.h" |
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| 39 | |||
| 40 | #include "libavformat/avformat.h" |
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| 41 | #include "libavformat/internal.h" |
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| 42 | |||
| 43 | typedef struct CDIOContext { |
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| 44 | const AVClass *class; |
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| 45 | cdrom_drive_t *drive; |
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| 46 | cdrom_paranoia_t *paranoia; |
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| 47 | int32_t last_sector; |
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| 48 | |||
| 49 | /* private options */ |
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| 50 | int speed; |
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| 51 | int paranoia_mode; |
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| 52 | } CDIOContext; |
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| 53 | |||
| 54 | static av_cold int read_header(AVFormatContext *ctx) |
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| 55 | { |
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| 56 | CDIOContext *s = ctx->priv_data; |
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| 57 | AVStream *st; |
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| 58 | int ret, i; |
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| 59 | char *err = NULL; |
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| 60 | |||
| 61 | if (!(st = avformat_new_stream(ctx, NULL))) |
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| 62 | return AVERROR(ENOMEM); |
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| 63 | s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err); |
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| 64 | if (!s->drive) { |
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| 65 | av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename); |
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| 66 | return AVERROR(EINVAL); |
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| 67 | } |
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| 68 | if (err) { |
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| 69 | av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
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| 70 | free(err); |
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| 71 | } |
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| 72 | if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) { |
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| 73 | av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename); |
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| 74 | return AVERROR(EINVAL); |
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| 75 | } |
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| 76 | |||
| 77 | cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT); |
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| 78 | if (s->speed) |
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| 79 | cdio_cddap_speed_set(s->drive, s->speed); |
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| 80 | |||
| 81 | s->paranoia = cdio_paranoia_init(s->drive); |
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| 82 | if (!s->paranoia) { |
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| 83 | av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n"); |
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| 84 | return AVERROR(EINVAL); |
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| 85 | } |
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| 86 | cdio_paranoia_modeset(s->paranoia, s->paranoia_mode); |
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| 87 | |||
| 88 | st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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| 89 | if (s->drive->bigendianp) |
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| 90 | st->codec->codec_id = AV_CODEC_ID_PCM_S16BE; |
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| 91 | else |
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| 92 | st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; |
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| 93 | st->codec->sample_rate = 44100; |
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| 94 | st->codec->channels = 2; |
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| 95 | if (s->drive->audio_last_sector != CDIO_INVALID_LSN && |
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| 96 | s->drive->audio_first_sector != CDIO_INVALID_LSN) |
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| 97 | st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector; |
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| 98 | else if (s->drive->tracks) |
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| 99 | st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector; |
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| 100 | avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2*st->codec->channels*st->codec->sample_rate); |
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| 101 | |||
| 102 | for (i = 0; i < s->drive->tracks; i++) { |
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| 103 | char title[16]; |
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| 104 | snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack); |
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| 105 | avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector, |
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| 106 | s->drive->disc_toc[i+1].dwStartSector, title); |
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| 107 | } |
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| 108 | |||
| 109 | s->last_sector = cdio_cddap_disc_lastsector(s->drive); |
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| 110 | |||
| 111 | return 0; |
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| 112 | } |
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| 113 | |||
| 114 | static int read_packet(AVFormatContext *ctx, AVPacket *pkt) |
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| 115 | { |
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| 116 | CDIOContext *s = ctx->priv_data; |
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| 117 | int ret; |
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| 118 | uint16_t *buf; |
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| 119 | char *err = NULL; |
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| 120 | |||
| 121 | if (ctx->streams[0]->cur_dts > s->last_sector) |
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| 122 | return AVERROR_EOF; |
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| 123 | |||
| 124 | buf = cdio_paranoia_read(s->paranoia, NULL); |
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| 125 | if (!buf) |
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| 126 | return AVERROR_EOF; |
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| 127 | |||
| 128 | if (err = cdio_cddap_errors(s->drive)) { |
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| 129 | av_log(ctx, AV_LOG_ERROR, "%s\n", err); |
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| 130 | free(err); |
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| 131 | err = NULL; |
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| 132 | } |
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| 133 | if (err = cdio_cddap_messages(s->drive)) { |
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| 134 | av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
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| 135 | free(err); |
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| 136 | err = NULL; |
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| 137 | } |
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| 138 | |||
| 139 | if ((ret = av_new_packet(pkt, CDIO_CD_FRAMESIZE_RAW)) < 0) |
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| 140 | return ret; |
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| 141 | memcpy(pkt->data, buf, CDIO_CD_FRAMESIZE_RAW); |
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| 142 | return 0; |
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| 143 | } |
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| 144 | |||
| 145 | static av_cold int read_close(AVFormatContext *ctx) |
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| 146 | { |
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| 147 | CDIOContext *s = ctx->priv_data; |
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| 148 | cdio_paranoia_free(s->paranoia); |
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| 149 | cdio_cddap_close(s->drive); |
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| 150 | return 0; |
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| 151 | } |
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| 152 | |||
| 153 | static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, |
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| 154 | int flags) |
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| 155 | { |
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| 156 | CDIOContext *s = ctx->priv_data; |
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| 157 | AVStream *st = ctx->streams[0]; |
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| 158 | |||
| 159 | cdio_paranoia_seek(s->paranoia, timestamp, SEEK_SET); |
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| 160 | st->cur_dts = timestamp; |
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| 161 | return 0; |
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| 162 | } |
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| 163 | |||
| 164 | #define OFFSET(x) offsetof(CDIOContext, x) |
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| 165 | #define DEC AV_OPT_FLAG_DECODING_PARAM |
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| 166 | static const AVOption options[] = { |
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| 167 | { "speed", "Drive reading speed.", OFFSET(speed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, DEC }, |
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| 168 | { "paranoia_mode", "Error recovery mode.", OFFSET(paranoia_mode), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, DEC, "paranoia_mode" }, |
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| 169 | { "verify", "Verify data integrity in overlap area", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_VERIFY }, 0, 0, DEC, "paranoia_mode" }, |
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| 170 | { "overlap", "Perform overlapped reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_OVERLAP }, 0, 0, DEC, "paranoia_mode" }, |
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| 171 | { "neverskip", "Do not skip failed reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_NEVERSKIP }, 0, 0, DEC, "paranoia_mode" }, |
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| 172 | { NULL }, |
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| 173 | }; |
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| 174 | |||
| 175 | static const AVClass libcdio_class = { |
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| 176 | .class_name = "libcdio indev", |
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| 177 | .item_name = av_default_item_name, |
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| 178 | .option = options, |
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| 179 | .version = LIBAVUTIL_VERSION_INT, |
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| 180 | }; |
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| 181 | |||
| 182 | AVInputFormat ff_libcdio_demuxer = { |
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| 183 | .name = "libcdio", |
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| 184 | .read_header = read_header, |
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| 185 | .read_packet = read_packet, |
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| 186 | .read_close = read_close, |
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| 187 | .read_seek = read_seek, |
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| 188 | .priv_data_size = sizeof(CDIOContext), |
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| 189 | .flags = AVFMT_NOFILE, |
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| 190 | .priv_class = &libcdio_class, |
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| 191 | }; |