lavd: add libcdio-paranoia input device for audio CD grabbing

1 files changed, 186 insertions, 0 deletions

diff --git a/libavdevice/libcdio.c b/libavdevice/libcdio.c
new file mode 100644
index 0000000000..be1c516b09
--- /dev/null
+++ b/libavdevice/libcdio.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2011 Anton Khirnov <anton@khirnov.net>
+ *
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ *
+ * Libav 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 Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * libcdio CD grabbing
+ */
+
+#include <cdio/cdda.h>
+#include <cdio/paranoia.h>
+
+#include "libavutil/log.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+
+#include "libavformat/avformat.h"
+#include "libavformat/internal.h"
+
+/* cdio returns some malloced strings that need to be free()d */
+#undef free
+
+typedef struct CDIOContext {
+    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, AVFormatParameters *ap)
+{
+    CDIOContext *s = ctx->priv_data;
+    AVStream *st;
+    int ret, i;
+    char *err = NULL;
+
+    if (!(st = av_new_stream(ctx, 0)))
+        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    = CODEC_ID_PCM_S16BE;
+    else
+        st->codec->codec_id    = 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;
+    av_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);
+        ff_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),         FF_OPT_TYPE_INT,   { 0 }, 0,       INT_MAX, DEC },
+    { "paranoia_mode",      "Error recovery mode.", OFFSET(paranoia_mode), FF_OPT_TYPE_FLAGS, { 0 }, INT_MIN, INT_MAX, DEC, "paranoia_mode" },
+        { "verify",         "Verify data integrity in overlap area", 0,    FF_OPT_TYPE_CONST, { PARANOIA_MODE_VERIFY },    0, 0, DEC, "paranoia_mode" },
+        { "overlap",        "Perform overlapped reads.",             0,    FF_OPT_TYPE_CONST, { PARANOIA_MODE_OVERLAP },   0, 0, DEC, "paranoia_mode" },
+        { "neverskip",      "Do not skip failed reads.",             0,    FF_OPT_TYPE_CONST, { 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,
+};
+
+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,
+};