gstreamer/ext/cdparanoia/gstcdparanoiasrc.c
2012-04-10 00:45:16 +01:00

535 lines
16 KiB
C

/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2005> Wim Taymans <wim@fluendo.com>
* <2005> Tim-Philipp Müller <tim centricular net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <errno.h>
#include "gstcdparanoiasrc.h"
#include "gst/gst-i18n-plugin.h"
enum
{
TRANSPORT_ERROR,
UNCORRECTED_ERROR,
NUM_SIGNALS
};
enum
{
PROP_0,
PROP_READ_SPEED,
PROP_PARANOIA_MODE,
PROP_SEARCH_OVERLAP,
PROP_GENERIC_DEVICE,
PROP_CACHE_SIZE
};
#define DEFAULT_READ_SPEED -1
#define DEFAULT_SEARCH_OVERLAP -1
#define DEFAULT_PARANOIA_MODE PARANOIA_MODE_FRAGMENT
#define DEFAULT_GENERIC_DEVICE NULL
#define DEFAULT_CACHE_SIZE -1
GST_DEBUG_CATEGORY_STATIC (gst_cd_paranoia_src_debug);
#define GST_CAT_DEFAULT gst_cd_paranoia_src_debug
#define gst_cd_paranoia_src_parent_class parent_class
G_DEFINE_TYPE (GstCdParanoiaSrc, gst_cd_paranoia_src, GST_TYPE_AUDIO_CD_SRC);
static void gst_cd_paranoia_src_finalize (GObject * obj);
static void gst_cd_paranoia_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_cd_paranoia_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static GstBuffer *gst_cd_paranoia_src_read_sector (GstAudioCdSrc * src,
gint sector);
static gboolean gst_cd_paranoia_src_open (GstAudioCdSrc * src,
const gchar * device);
static void gst_cd_paranoia_src_close (GstAudioCdSrc * src);
/* We use these to serialize calls to paranoia_read() among several
* cdparanoiasrc instances. We do this because it's the only reasonably
* easy way to find out the calling object from within the paranoia
* callback, and we need the object instance in there to emit our signals */
static GstCdParanoiaSrc *cur_cb_source;
static GMutex cur_cb_mutex;
static gint cdpsrc_signals[NUM_SIGNALS]; /* all 0 */
#define GST_TYPE_CD_PARANOIA_MODE (gst_cd_paranoia_mode_get_type())
static GType
gst_cd_paranoia_mode_get_type (void)
{
static const GFlagsValue paranoia_modes[] = {
{PARANOIA_MODE_DISABLE, "PARANOIA_MODE_DISABLE", "disable"},
{PARANOIA_MODE_FRAGMENT, "PARANOIA_MODE_FRAGMENT", "fragment"},
{PARANOIA_MODE_OVERLAP, "PARANOIA_MODE_OVERLAP", "overlap"},
{PARANOIA_MODE_SCRATCH, "PARANOIA_MODE_SCRATCH", "scratch"},
{PARANOIA_MODE_REPAIR, "PARANOIA_MODE_REPAIR", "repair"},
{PARANOIA_MODE_FULL, "PARANOIA_MODE_FULL", "full"},
{0, NULL, NULL},
};
static GType type; /* 0 */
if (!type) {
type = g_flags_register_static ("GstCdParanoiaMode", paranoia_modes);
}
return type;
}
static void
gst_cd_paranoia_src_init (GstCdParanoiaSrc * src)
{
src->d = NULL;
src->p = NULL;
src->next_sector = -1;
src->search_overlap = DEFAULT_SEARCH_OVERLAP;
src->paranoia_mode = DEFAULT_PARANOIA_MODE;
src->read_speed = DEFAULT_READ_SPEED;
src->generic_device = g_strdup (DEFAULT_GENERIC_DEVICE);
src->cache_size = DEFAULT_CACHE_SIZE;
}
static void
gst_cd_paranoia_src_class_init (GstCdParanoiaSrcClass * klass)
{
GstAudioCdSrcClass *audiocdsrc_class = GST_AUDIO_CD_SRC_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->set_property = gst_cd_paranoia_src_set_property;
gobject_class->get_property = gst_cd_paranoia_src_get_property;
gobject_class->finalize = gst_cd_paranoia_src_finalize;
gst_element_class_set_static_metadata (element_class,
"CD Audio (cdda) Source, Paranoia IV", "Source/File",
"Read audio from CD in paranoid mode",
"Erik Walthinsen <omega@cse.ogi.edu>, Wim Taymans <wim@fluendo.com>");
audiocdsrc_class->open = gst_cd_paranoia_src_open;
audiocdsrc_class->close = gst_cd_paranoia_src_close;
audiocdsrc_class->read_sector = gst_cd_paranoia_src_read_sector;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_GENERIC_DEVICE,
g_param_spec_string ("generic-device", "Generic device",
"Use specified generic scsi device", DEFAULT_GENERIC_DEVICE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_READ_SPEED,
g_param_spec_int ("read-speed", "Read speed",
"Read from device at specified speed", -1, G_MAXINT,
DEFAULT_READ_SPEED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PARANOIA_MODE,
g_param_spec_flags ("paranoia-mode", "Paranoia mode",
"Type of checking to perform", GST_TYPE_CD_PARANOIA_MODE,
DEFAULT_PARANOIA_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SEARCH_OVERLAP,
g_param_spec_int ("search-overlap", "Search overlap",
"Force minimum overlap search during verification to n sectors", -1,
75, DEFAULT_SEARCH_OVERLAP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/**
* GstCdParanoiaSrc:cache-size
*
* Set CD cache size to n sectors (-1 = auto)
*
* Since: 0.10.24
*/
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CACHE_SIZE,
g_param_spec_int ("cache-size", "Cache size",
"Set CD cache size to n sectors (-1 = auto)", -1,
G_MAXINT, DEFAULT_CACHE_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
/* FIXME: we don't really want signals for this, but messages on the bus,
* but then we can't check any longer whether anyone is interested in them */
/**
* GstCdParanoiaSrc::transport-error
* @cdparanoia: The CdParanoia instance
* @sector: The sector number at which the error was encountered.
*
* This signal is emitted whenever an error occurs while reading.
* CdParanoia will attempt to recover the data.
*/
cdpsrc_signals[TRANSPORT_ERROR] =
g_signal_new ("transport-error", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstCdParanoiaSrcClass, transport_error),
NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
/**
* GstCdParanoiaSrc::uncorrected-error
* @cdparanoia: The CdParanoia instance
* @sector: The sector number at which the error was encountered.
*
* This signal is emitted whenever an uncorrectable error occurs while
* reading. The data could not be read.
*/
cdpsrc_signals[UNCORRECTED_ERROR] =
g_signal_new ("uncorrected-error", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstCdParanoiaSrcClass, uncorrected_error),
NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
}
static gboolean
gst_cd_paranoia_src_open (GstAudioCdSrc * audiocdsrc, const gchar * device)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (audiocdsrc);
gint i, cache_size;
GST_DEBUG_OBJECT (src, "trying to open device %s (generic-device=%s) ...",
device, GST_STR_NULL (src->generic_device));
/* find the device */
if (src->generic_device != NULL) {
src->d = cdda_identify_scsi (src->generic_device, device, FALSE, NULL);
} else {
if (device != NULL) {
src->d = cdda_identify (device, FALSE, NULL);
} else {
src->d = cdda_identify ("/dev/cdrom", FALSE, NULL);
}
}
/* fail if the device couldn't be found */
if (src->d == NULL)
goto no_device;
/* set verbosity mode */
cdda_verbose_set (src->d, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
/* open the disc */
if (cdda_open (src->d))
goto open_failed;
if (src->read_speed != -1) {
cdda_speed_set (src->d, src->read_speed);
}
for (i = 1; i < src->d->tracks + 1; i++) {
GstAudioCdSrcTrack track = { 0, };
track.num = i;
track.is_audio = IS_AUDIO (src->d, i - 1);
track.start = cdda_track_firstsector (src->d, i);
track.end = cdda_track_lastsector (src->d, i);
track.tags = NULL;
gst_audio_cd_src_add_track (GST_AUDIO_CD_SRC (src), &track);
}
/* create the paranoia struct and set it up */
src->p = paranoia_init (src->d);
if (src->p == NULL)
goto init_failed;
paranoia_modeset (src->p, src->paranoia_mode);
GST_INFO_OBJECT (src, "set paranoia mode to 0x%02x", src->paranoia_mode);
if (src->search_overlap != -1) {
paranoia_overlapset (src->p, src->search_overlap);
GST_INFO_OBJECT (src, "search overlap set to %u", src->search_overlap);
}
cache_size = src->cache_size;
if (cache_size == -1) {
/* if paranoia mode is low (the default), assume we're doing playback */
if (src->paranoia_mode <= PARANOIA_MODE_FRAGMENT)
cache_size = 150;
else
cache_size = paranoia_cachemodel_size (src->p, -1);
}
paranoia_cachemodel_size (src->p, cache_size);
GST_INFO_OBJECT (src, "set cachemodel size to %u", cache_size);
src->next_sector = -1;
return TRUE;
/* ERRORS */
no_device:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open CD device for reading.")), ("cdda_identify failed"));
return FALSE;
}
open_failed:
{
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
(_("Could not open CD device for reading.")), ("cdda_open failed"));
cdda_close (src->d);
src->d = NULL;
return FALSE;
}
init_failed:
{
GST_ELEMENT_ERROR (src, LIBRARY, INIT,
("failed to initialize paranoia"), ("failed to initialize paranoia"));
return FALSE;
}
}
static void
gst_cd_paranoia_src_close (GstAudioCdSrc * audiocdsrc)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (audiocdsrc);
if (src->p) {
paranoia_free (src->p);
src->p = NULL;
}
if (src->d) {
cdda_close (src->d);
src->d = NULL;
}
src->next_sector = -1;
}
static void
gst_cd_paranoia_dummy_callback (long inpos, int function)
{
/* Used by instanced where no one is interested what's happening here */
}
static void
gst_cd_paranoia_paranoia_callback (long inpos, int function)
{
GstCdParanoiaSrc *src = cur_cb_source;
gint sector = (gint) (inpos / CD_FRAMEWORDS);
switch (function) {
case PARANOIA_CB_SKIP:
GST_INFO_OBJECT (src, "Skip at sector %d", sector);
g_signal_emit (src, cdpsrc_signals[UNCORRECTED_ERROR], 0, sector);
break;
case PARANOIA_CB_READERR:
GST_INFO_OBJECT (src, "Transport error at sector %d", sector);
g_signal_emit (src, cdpsrc_signals[TRANSPORT_ERROR], 0, sector);
break;
default:
break;
}
}
static gboolean
gst_cd_paranoia_src_signal_is_being_watched (GstCdParanoiaSrc * src, gint sig)
{
return g_signal_has_handler_pending (src, cdpsrc_signals[sig], 0, FALSE);
}
static GstBuffer *
gst_cd_paranoia_src_read_sector (GstAudioCdSrc * audiocdsrc, gint sector)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (audiocdsrc);
GstBuffer *buf;
gboolean do_serialize;
gint16 *cdda_buf;
#if 0
/* Do we really need to output this? (tpm) */
/* Due to possible autocorrections of start sectors of audio tracks on
* multisession cds, we can maybe not compute the correct discid.
* So issue a warning.
* See cdparanoia/interface/common-interface.c:FixupTOC */
if (src->d && src->d->cd_extra) {
g_message
("DiscID on multisession discs might be broken. Use at own risk.");
}
#endif
if (src->next_sector == -1 || src->next_sector != sector) {
if (paranoia_seek (src->p, sector, SEEK_SET) == -1)
goto seek_failed;
GST_DEBUG_OBJECT (src, "successfully seeked to sector %d", sector);
src->next_sector = sector;
}
do_serialize =
gst_cd_paranoia_src_signal_is_being_watched (src, TRANSPORT_ERROR) ||
gst_cd_paranoia_src_signal_is_being_watched (src, UNCORRECTED_ERROR);
if (do_serialize) {
GST_LOG_OBJECT (src, "Signal handlers connected, serialising access");
g_mutex_lock (&cur_cb_mutex);
GST_LOG_OBJECT (src, "Got lock");
cur_cb_source = src;
cdda_buf = paranoia_read (src->p, gst_cd_paranoia_paranoia_callback);
cur_cb_source = NULL;
GST_LOG_OBJECT (src, "Releasing lock");
g_mutex_unlock (&cur_cb_mutex);
} else {
cdda_buf = paranoia_read (src->p, gst_cd_paranoia_dummy_callback);
}
if (cdda_buf == NULL)
goto read_failed;
buf = gst_buffer_new_and_alloc (CD_FRAMESIZE_RAW);
gst_buffer_fill (buf, 0, cdda_buf, CD_FRAMESIZE_RAW);
/* cdda base class will take care of timestamping etc. */
++src->next_sector;
return buf;
/* ERRORS */
seek_failed:
{
GST_WARNING_OBJECT (src, "seek to sector %d failed!", sector);
GST_ELEMENT_ERROR (src, RESOURCE, SEEK,
(_("Could not seek CD.")),
("paranoia_seek to %d failed: %s", sector, g_strerror (errno)));
return NULL;
}
read_failed:
{
GST_WARNING_OBJECT (src, "read at sector %d failed!", sector);
GST_ELEMENT_ERROR (src, RESOURCE, READ,
(_("Could not read CD.")),
("paranoia_read at %d failed: %s", sector, g_strerror (errno)));
return NULL;
}
}
static void
gst_cd_paranoia_src_finalize (GObject * obj)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (obj);
g_free (src->generic_device);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_cd_paranoia_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (object);
GST_OBJECT_LOCK (src);
switch (prop_id) {
case PROP_GENERIC_DEVICE:{
g_free (src->generic_device);
src->generic_device = g_value_dup_string (value);
if (src->generic_device && src->generic_device[0] == '\0') {
g_free (src->generic_device);
src->generic_device = NULL;
}
break;
}
case PROP_READ_SPEED:{
src->read_speed = g_value_get_int (value);
if (src->read_speed == 0)
src->read_speed = -1;
break;
}
case PROP_PARANOIA_MODE:{
src->paranoia_mode = g_value_get_flags (value) & PARANOIA_MODE_FULL;
break;
}
case PROP_SEARCH_OVERLAP:{
src->search_overlap = g_value_get_int (value);
break;
}
case PROP_CACHE_SIZE:{
src->cache_size = g_value_get_int (value);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (src);
}
static void
gst_cd_paranoia_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCdParanoiaSrc *src = GST_CD_PARANOIA_SRC (object);
GST_OBJECT_LOCK (src);
switch (prop_id) {
case PROP_READ_SPEED:
g_value_set_int (value, src->read_speed);
break;
case PROP_PARANOIA_MODE:
g_value_set_flags (value, src->paranoia_mode);
break;
case PROP_GENERIC_DEVICE:
g_value_set_string (value, src->generic_device);
break;
case PROP_SEARCH_OVERLAP:
g_value_set_int (value, src->search_overlap);
break;
case PROP_CACHE_SIZE:
g_value_set_int (value, src->cache_size);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (src);
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_cd_paranoia_src_debug, "cdparanoiasrc", 0,
"CD Paranoia Source");
if (!gst_element_register (plugin, "cdparanoiasrc", GST_RANK_SECONDARY,
GST_TYPE_CD_PARANOIA_SRC))
return FALSE;
#ifdef ENABLE_NLS
GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
LOCALEDIR);
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
#endif
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
cdparanoia,
"Read audio from CD in paranoid mode",
plugin_init, GST_PLUGINS_BASE_VERSION, "LGPL", GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)