| /* |
| * Copyright (c) 2011 Anton Khirnov <anton@khirnov.net> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * libcdio CD grabbing |
| */ |
| |
| #include "config.h" |
| |
| #if HAVE_CDIO_PARANOIA_H |
| #include <cdio/cdda.h> |
| #include <cdio/paranoia.h> |
| #elif HAVE_CDIO_PARANOIA_PARANOIA_H |
| #include <cdio/paranoia/cdda.h> |
| #include <cdio/paranoia/paranoia.h> |
| #endif |
| |
| #include "libavutil/log.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/opt.h" |
| |
| #include "libavformat/avformat.h" |
| #include "libavformat/internal.h" |
| |
| typedef struct CDIOContext { |
| const AVClass *class; |
| cdrom_drive_t *drive; |
| cdrom_paranoia_t *paranoia; |
| int32_t last_sector; |
| |
| /* private options */ |
| int speed; |
| int paranoia_mode; |
| } CDIOContext; |
| |
| static av_cold int read_header(AVFormatContext *ctx) |
| { |
| CDIOContext *s = ctx->priv_data; |
| AVStream *st; |
| int ret, i; |
| char *err = NULL; |
| |
| if (!(st = avformat_new_stream(ctx, NULL))) |
| return AVERROR(ENOMEM); |
| s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err); |
| if (!s->drive) { |
| av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename); |
| return AVERROR(EINVAL); |
| } |
| if (err) { |
| av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
| free(err); |
| } |
| if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) { |
| av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename); |
| return AVERROR(EINVAL); |
| } |
| |
| cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT); |
| if (s->speed) |
| cdio_cddap_speed_set(s->drive, s->speed); |
| |
| s->paranoia = cdio_paranoia_init(s->drive); |
| if (!s->paranoia) { |
| av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n"); |
| return AVERROR(EINVAL); |
| } |
| cdio_paranoia_modeset(s->paranoia, s->paranoia_mode); |
| |
| st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| if (s->drive->bigendianp) |
| st->codec->codec_id = AV_CODEC_ID_PCM_S16BE; |
| else |
| st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; |
| st->codec->sample_rate = 44100; |
| st->codec->channels = 2; |
| if (s->drive->audio_last_sector != CDIO_INVALID_LSN && |
| s->drive->audio_first_sector != CDIO_INVALID_LSN) |
| st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector; |
| else if (s->drive->tracks) |
| st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector; |
| avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2*st->codec->channels*st->codec->sample_rate); |
| |
| for (i = 0; i < s->drive->tracks; i++) { |
| char title[16]; |
| snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack); |
| avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector, |
| s->drive->disc_toc[i+1].dwStartSector, title); |
| } |
| |
| s->last_sector = cdio_cddap_disc_lastsector(s->drive); |
| |
| return 0; |
| } |
| |
| static int read_packet(AVFormatContext *ctx, AVPacket *pkt) |
| { |
| CDIOContext *s = ctx->priv_data; |
| int ret; |
| uint16_t *buf; |
| char *err = NULL; |
| |
| if (ctx->streams[0]->cur_dts > s->last_sector) |
| return AVERROR_EOF; |
| |
| buf = cdio_paranoia_read(s->paranoia, NULL); |
| if (!buf) |
| return AVERROR_EOF; |
| |
| if (err = cdio_cddap_errors(s->drive)) { |
| av_log(ctx, AV_LOG_ERROR, "%s\n", err); |
| free(err); |
| err = NULL; |
| } |
| if (err = cdio_cddap_messages(s->drive)) { |
| av_log(ctx, AV_LOG_VERBOSE, "%s\n", err); |
| free(err); |
| err = NULL; |
| } |
| |
| if ((ret = av_new_packet(pkt, CDIO_CD_FRAMESIZE_RAW)) < 0) |
| return ret; |
| memcpy(pkt->data, buf, CDIO_CD_FRAMESIZE_RAW); |
| return 0; |
| } |
| |
| static av_cold int read_close(AVFormatContext *ctx) |
| { |
| CDIOContext *s = ctx->priv_data; |
| cdio_paranoia_free(s->paranoia); |
| cdio_cddap_close(s->drive); |
| return 0; |
| } |
| |
| static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, |
| int flags) |
| { |
| CDIOContext *s = ctx->priv_data; |
| AVStream *st = ctx->streams[0]; |
| |
| cdio_paranoia_seek(s->paranoia, timestamp, SEEK_SET); |
| st->cur_dts = timestamp; |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(CDIOContext, x) |
| #define DEC AV_OPT_FLAG_DECODING_PARAM |
| static const AVOption options[] = { |
| { "speed", "Drive reading speed.", OFFSET(speed), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, DEC }, |
| { "paranoia_mode", "Error recovery mode.", OFFSET(paranoia_mode), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, DEC, "paranoia_mode" }, |
| { "verify", "Verify data integrity in overlap area", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_VERIFY }, 0, 0, DEC, "paranoia_mode" }, |
| { "overlap", "Perform overlapped reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_OVERLAP }, 0, 0, DEC, "paranoia_mode" }, |
| { "neverskip", "Do not skip failed reads.", 0, AV_OPT_TYPE_CONST, { .i64 = PARANOIA_MODE_NEVERSKIP }, 0, 0, DEC, "paranoia_mode" }, |
| { NULL }, |
| }; |
| |
| static const AVClass libcdio_class = { |
| .class_name = "libcdio indev", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| .category = AV_CLASS_CATEGORY_DEVICE_AUDIO_INPUT, |
| }; |
| |
| AVInputFormat ff_libcdio_demuxer = { |
| .name = "libcdio", |
| .read_header = read_header, |
| .read_packet = read_packet, |
| .read_close = read_close, |
| .read_seek = read_seek, |
| .priv_data_size = sizeof(CDIOContext), |
| .flags = AVFMT_NOFILE, |
| .priv_class = &libcdio_class, |
| }; |