mpv/stream/stream_cdda.c

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/*
* Original author: Albeu
*
* This file is part of mpv.
*
* mpv is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpv 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <cdio/cdio.h>
#if CDIO_API_VERSION < 6
#define OLD_API
#endif
#ifdef OLD_API
#include <cdio/cdda.h>
#include <cdio/paranoia.h>
#else
#include <cdio/paranoia/cdda.h>
#include <cdio/paranoia/paranoia.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include "mpv_talloc.h"
#include "stream.h"
#include "options/m_option.h"
#include "options/m_config.h"
#include "options/options.h"
#include "common/msg.h"
#include "config.h"
#if !HAVE_GPL
#error GPL only
#endif
typedef struct cdda_params {
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cdrom_drive_t *cd;
cdrom_paranoia_t *cdp;
int sector;
int start_sector;
int end_sector;
// options
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int speed;
int paranoia_mode;
int sector_size;
int search_overlap;
int toc_bias;
int toc_offset;
int skip;
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char *device;
int span[2];
int cdtext;
} cdda_priv;
#define OPT_BASE_STRUCT struct cdda_params
const struct m_sub_options stream_cdda_conf = {
.opts = (const m_option_t[]) {
OPT_INTRANGE("speed", speed, 0, 1, 100),
OPT_INTRANGE("paranoia", paranoia_mode, 0, 0, 2),
OPT_INTRANGE("sector-size", sector_size, 0, 1, 100),
OPT_INTRANGE("overlap", search_overlap, 0, 0, 75),
OPT_INT("toc-bias", toc_bias, 0),
OPT_INT("toc-offset", toc_offset, 0),
OPT_FLAG("skip", skip, 0),
OPT_INTPAIR("span", span, 0),
OPT_FLAG("cdtext", cdtext, 0),
{0}
},
.size = sizeof(struct cdda_params),
.defaults = &(const struct cdda_params){
.search_overlap = -1,
.skip = 1,
},
};
static const char *const cdtext_name[] = {
#ifdef OLD_API
[CDTEXT_ARRANGER] = "Arranger",
[CDTEXT_COMPOSER] = "Composer",
[CDTEXT_MESSAGE] = "Message",
[CDTEXT_ISRC] = "ISRC",
[CDTEXT_PERFORMER] = "Performer",
[CDTEXT_SONGWRITER] = "Songwriter",
[CDTEXT_TITLE] = "Title",
[CDTEXT_UPC_EAN] = "UPC_EAN",
#else
[CDTEXT_FIELD_ARRANGER] = "Arranger",
[CDTEXT_FIELD_COMPOSER] = "Composer",
[CDTEXT_FIELD_MESSAGE] = "Message",
[CDTEXT_FIELD_ISRC] = "ISRC",
[CDTEXT_FIELD_PERFORMER] = "Performer",
[CDTEXT_FIELD_SONGWRITER] = "Songwriter",
[CDTEXT_FIELD_TITLE] = "Title",
[CDTEXT_FIELD_UPC_EAN] = "UPC_EAN",
#endif
};
static void print_cdtext(stream_t *s, int track)
{
cdda_priv* p = (cdda_priv*)s->priv;
if (!p->cdtext)
return;
#ifdef OLD_API
cdtext_t *text = cdio_get_cdtext(p->cd->p_cdio, track);
#else
cdtext_t *text = cdio_get_cdtext(p->cd->p_cdio);
#endif
int header = 0;
if (text) {
for (int i = 0; i < sizeof(cdtext_name) / sizeof(cdtext_name[0]); i++) {
const char *name = cdtext_name[i];
#ifdef OLD_API
const char *value = cdtext_get_const(i, text);
#else
const char *value = cdtext_get_const(text, i, track);
#endif
if (name && value) {
if (!header)
MP_INFO(s, "CD-Text (%s):\n", track ? "track" : "CD");
header = 1;
MP_INFO(s, " %s: '%s'\n", name, value);
}
}
}
}
static void print_track_info(stream_t *s, int track)
{
MP_INFO(s, "Switched to track %d\n", track);
print_cdtext(s, track);
}
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static void cdparanoia_callback(long int inpos, paranoia_cb_mode_t function)
{
}
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static int fill_buffer(stream_t *s, char *buffer, int max_len)
{
cdda_priv *p = (cdda_priv *)s->priv;
int16_t *buf;
int i;
if (max_len < CDIO_CD_FRAMESIZE_RAW)
return -1;
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if ((p->sector < p->start_sector) || (p->sector > p->end_sector)) {
return 0;
}
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buf = paranoia_read(p->cdp, cdparanoia_callback);
if (!buf)
return 0;
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p->sector++;
memcpy(buffer, buf, CDIO_CD_FRAMESIZE_RAW);
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for (i = 0; i < p->cd->tracks; i++) {
if (p->cd->disc_toc[i].dwStartSector == p->sector - 1) {
print_track_info(s, i + 1);
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break;
}
}
return CDIO_CD_FRAMESIZE_RAW;
}
static int seek(stream_t *s, int64_t newpos)
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{
cdda_priv *p = (cdda_priv *)s->priv;
int sec;
int current_track = 0, seeked_track = 0;
int seek_to_track = 0;
int i;
newpos += p->start_sector * CDIO_CD_FRAMESIZE_RAW;
sec = newpos / CDIO_CD_FRAMESIZE_RAW;
if (newpos < 0 || sec > p->end_sector) {
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p->sector = p->end_sector + 1;
return 0;
}
for (i = 0; i < p->cd->tracks; i++) {
if (p->sector >= p->cd->disc_toc[i].dwStartSector
&& p->sector < p->cd->disc_toc[i + 1].dwStartSector)
current_track = i;
if (sec >= p->cd->disc_toc[i].dwStartSector
&& sec < p->cd->disc_toc[i + 1].dwStartSector)
{
seeked_track = i;
seek_to_track = sec == p->cd->disc_toc[i].dwStartSector;
}
}
if (current_track != seeked_track && !seek_to_track)
print_track_info(s, seeked_track + 1);
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p->sector = sec;
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paranoia_seek(p->cdp, sec, SEEK_SET);
return 1;
}
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static void close_cdda(stream_t *s)
{
cdda_priv *p = (cdda_priv *)s->priv;
paranoia_free(p->cdp);
cdda_close(p->cd);
}
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static int get_track_by_sector(cdda_priv *p, unsigned int sector)
{
int i;
for (i = p->cd->tracks; i >= 0; --i)
if (p->cd->disc_toc[i].dwStartSector <= sector)
break;
return i;
}
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static int control(stream_t *stream, int cmd, void *arg)
{
cdda_priv *p = stream->priv;
switch (cmd) {
case STREAM_CTRL_GET_NUM_CHAPTERS:
{
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int start_track = get_track_by_sector(p, p->start_sector);
int end_track = get_track_by_sector(p, p->end_sector);
if (start_track == -1 || end_track == -1)
return STREAM_ERROR;
*(unsigned int *)arg = end_track + 1 - start_track;
return STREAM_OK;
}
case STREAM_CTRL_GET_CHAPTER_TIME:
{
int track = *(double *)arg;
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int start_track = get_track_by_sector(p, p->start_sector);
int end_track = get_track_by_sector(p, p->end_sector);
track += start_track;
if (track > end_track)
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return STREAM_ERROR;
int64_t sector = p->cd->disc_toc[track].dwStartSector;
int64_t pos = sector * CDIO_CD_FRAMESIZE_RAW;
// Assume standard audio CD: 44.1khz, 2 channels, s16 samples
*(double *)arg = pos / (44100.0 * 2 * 2);
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return STREAM_OK;
}
case STREAM_CTRL_GET_SIZE:
*(int64_t *)arg =
(p->end_sector + 1 - p->start_sector) * CDIO_CD_FRAMESIZE_RAW;
return STREAM_OK;
}
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return STREAM_UNSUPPORTED;
}
static int open_cdda(stream_t *st)
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{
st->priv = mp_get_config_group(st, st->global, &stream_cdda_conf);
cdda_priv *priv = st->priv;
cdda_priv *p = priv;
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int mode = p->paranoia_mode;
int offset = p->toc_offset;
cdrom_drive_t *cdd = NULL;
int last_track;
char *global_device;
mp_read_option_raw(st->global, "cdrom-device", &m_option_type_string,
&global_device);
talloc_steal(st, global_device);
if (st->path[0]) {
p->device = st->path;
} else if (global_device && global_device[0]) {
p->device = global_device;
} else {
p->device = DEFAULT_CDROM_DEVICE;
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}
#if defined(__NetBSD__)
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cdd = cdda_identify_scsi(p->device, p->device, 0, NULL);
#else
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cdd = cdda_identify(p->device, 0, NULL);
#endif
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if (!cdd) {
MP_ERR(st, "Can't open CDDA device.\n");
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return STREAM_ERROR;
}
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cdda_verbose_set(cdd, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
if (p->sector_size)
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cdd->nsectors = p->sector_size;
if (cdda_open(cdd) != 0) {
MP_ERR(st, "Can't open disc.\n");
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cdda_close(cdd);
return STREAM_ERROR;
}
priv->cd = cdd;
if (p->toc_bias)
offset -= cdda_track_firstsector(cdd, 1);
if (offset) {
for (int n = 0; n < cdd->tracks + 1; n++)
cdd->disc_toc[n].dwStartSector += offset;
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}
if (p->speed > 0)
cdda_speed_set(cdd, p->speed);
last_track = cdda_tracks(cdd);
if (p->span[0] > last_track)
p->span[0] = last_track;
if (p->span[1] < p->span[0])
p->span[1] = p->span[0];
if (p->span[1] > last_track)
p->span[1] = last_track;
if (p->span[0])
priv->start_sector = cdda_track_firstsector(cdd, p->span[0]);
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else
priv->start_sector = cdda_disc_firstsector(cdd);
if (p->span[1])
priv->end_sector = cdda_track_lastsector(cdd, p->span[1]);
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else
priv->end_sector = cdda_disc_lastsector(cdd);
priv->cdp = paranoia_init(cdd);
if (priv->cdp == NULL) {
cdda_close(cdd);
free(priv);
return STREAM_ERROR;
}
if (mode == 0)
mode = PARANOIA_MODE_DISABLE;
else if (mode == 1)
mode = PARANOIA_MODE_OVERLAP;
else
mode = PARANOIA_MODE_FULL;
if (p->skip)
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mode &= ~PARANOIA_MODE_NEVERSKIP;
else
mode |= PARANOIA_MODE_NEVERSKIP;
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if (p->search_overlap > 0)
mode |= PARANOIA_MODE_OVERLAP;
else if (p->search_overlap == 0)
mode &= ~PARANOIA_MODE_OVERLAP;
paranoia_modeset(priv->cdp, mode);
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if (p->search_overlap > 0)
paranoia_overlapset(priv->cdp, p->search_overlap);
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paranoia_seek(priv->cdp, priv->start_sector, SEEK_SET);
priv->sector = priv->start_sector;
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st->priv = priv;
st->sector_size = CDIO_CD_FRAMESIZE_RAW;
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st->fill_buffer = fill_buffer;
st->seek = seek;
st->seekable = true;
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st->control = control;
st->close = close_cdda;
st->streaming = true;
st->demuxer = "+disc";
print_cdtext(st, 0);
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return STREAM_OK;
}
const stream_info_t stream_info_cdda = {
.name = "cdda",
.open = open_cdda,
.protocols = (const char*const[]){"cdda", NULL },
};