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gstreamer/ext/cdparanoia/gstcdparanoia.c
Benjamin Otte 8593c57c2f uhm yeah. segfault fix for gst-inspect 
Original commit message from CVS:
uhm yeah. segfault fix for gst-inspect
2003-04-08 22:40:07 +00:00

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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
/* #define GST_DEBUG_ENABLED */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <dirent.h>
#include <errno.h>
/* taken from linux/cdrom.h */
#define CD_MSF_OFFSET 150 /* MSF numbering offset of first frame */
#define CD_SECS 60 /* seconds per minute */
#define CD_FRAMES 75 /* frames per second */
#include "gstcdparanoia.h"
static GstElementDetails cdparanoia_details = {
"CD Audio (cdda) Source, Paranoia IV",
"Source/File",
"LGPL",
"Read audio from CD in paranoid mode",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 2000",
};
GST_PAD_TEMPLATE_FACTORY (cdparanoia_src_factory,
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"cdparanoia_src",
"audio/raw",
"format", GST_PROPS_STRING ("int"),
"law", GST_PROPS_INT (0),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
"width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_INT (44100),
"channels", GST_PROPS_INT (2),
"chunksize", GST_PROPS_INT (CD_FRAMESIZE_RAW)
)
);
/********** Define useful types for non-programmatic interfaces **********/
#define GST_TYPE_PARANOIA_MODE (gst_paranoia_mode_get_type())
static GType
gst_paranoia_mode_get_type (void)
{
static GType paranoia_mode_type = 0;
static GEnumValue paranoia_modes[] = {
{ PARANOIA_MODE_DISABLE, "0", "Disable paranoid checking"},
{ PARANOIA_MODE_OVERLAP, "4", "cdda2wav-style overlap checking"},
{ PARANOIA_MODE_FULL, "255", "Full paranoia"},
{0, NULL, NULL},
};
if (!paranoia_mode_type) {
paranoia_mode_type = g_enum_register_static ("GstParanoiaMode", paranoia_modes);
}
return paranoia_mode_type;
}
#define GST_TYPE_PARANOIA_ENDIAN (gst_paranoia_endian_get_type())
static GType
gst_paranoia_endian_get_type (void)
{
static GType paranoia_endian_type = 0;
static GEnumValue paranoia_endians[] = {
{ 0, "0", "treat drive as little endian"},
{ 1, "1", "treat drive as big endian"},
{ 0, NULL, NULL},
};
if (!paranoia_endian_type) {
paranoia_endian_type = g_enum_register_static ("GstParanoiaEndian", paranoia_endians);
}
return paranoia_endian_type;
}
/********** Standard stuff for signals and arguments **********/
/* CDParanoia signals and args */
enum
{
SMILIE_CHANGE,
TRANSPORT_ERROR,
UNCORRECTED_ERROR,
LAST_SIGNAL
};
enum
{
ARG_0,
ARG_LOCATION,
ARG_GENERIC_DEVICE,
ARG_DEFAULT_SECTORS,
ARG_SEARCH_OVERLAP,
ARG_ENDIAN,
ARG_READ_SPEED,
ARG_TOC_OFFSET,
ARG_TOC_BIAS,
ARG_NEVER_SKIP,
ARG_ABORT_ON_SKIP,
ARG_PARANOIA_MODE,
ARG_SMILIE,
ARG_DISCID
};
static void cdparanoia_class_init (CDParanoiaClass *klass);
static void cdparanoia_init (CDParanoia *cdparanoia);
static void cdparanoia_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void cdparanoia_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static GstBuffer* cdparanoia_get (GstPad *pad);
static gboolean cdparanoia_event (GstPad *pad, GstEvent *event);
static const GstEventMask*
cdparanoia_get_event_mask (GstPad *pad);
static const GstFormat*
cdparanoia_get_formats (GstPad *pad);
static gboolean cdparanoia_convert (GstPad *pad,
GstFormat src_format,
gint64 src_value,
GstFormat *dest_format,
gint64 *dest_value);
static gboolean cdparanoia_query (GstPad *pad, GstQueryType type,
GstFormat *format, gint64 *value);
static const GstQueryType*
cdparanoia_get_query_types (GstPad *pad);
static void cdparanoia_set_index (GstElement *element, GstIndex *index);
static GstIndex *cdparanoia_get_index (GstElement *element);
static GstElementStateReturn cdparanoia_change_state (GstElement *element);
static GstElementClass *parent_class = NULL;
static guint cdparanoia_signals[LAST_SIGNAL] = { 0 };
static GstFormat track_format;
static GstFormat sector_format;
GType
cdparanoia_get_type (void)
{
static GType cdparanoia_type = 0;
if (!cdparanoia_type) {
static const GTypeInfo cdparanoia_info = {
sizeof (CDParanoiaClass), NULL,
NULL,
(GClassInitFunc) cdparanoia_class_init,
NULL,
NULL,
sizeof (CDParanoia),
0,
(GInstanceInitFunc) cdparanoia_init,
};
cdparanoia_type = g_type_register_static (GST_TYPE_ELEMENT, "CDParanoia", &cdparanoia_info, 0);
/* Register the track format */
track_format = gst_format_register ("track", "CD track");
sector_format = gst_format_register ("sector", "CD sector");
}
return cdparanoia_type;
}
static void
cdparanoia_class_init (CDParanoiaClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
char *success = strerror_tr[0];
success = NULL;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
cdparanoia_signals[SMILIE_CHANGE] =
g_signal_new ("smilie_change", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (CDParanoiaClass, smilie_change), NULL, NULL,
g_cclosure_marshal_VOID__STRING, G_TYPE_NONE, 1, G_TYPE_STRING);
cdparanoia_signals[TRANSPORT_ERROR] =
g_signal_new ("transport_error", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (CDParanoiaClass, transport_error), NULL, NULL,
g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
cdparanoia_signals[UNCORRECTED_ERROR] =
g_signal_new ("uncorrected_error", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (CDParanoiaClass, uncorrected_error), NULL, NULL,
g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOCATION,
g_param_spec_string ("location", "location", "location",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_GENERIC_DEVICE,
g_param_spec_string ("generic_device", "Generic device", "Use specified generic scsi device",
NULL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEFAULT_SECTORS,
g_param_spec_int ("default_sectors", "Default sectors",
"Force default number of sectors in read to n sectors",
-1, 100, -1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SEARCH_OVERLAP,
g_param_spec_int ("search_overlap", "Search overlap",
"Force minimum overlap search during verification to n sectors",
-1, 75, -1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ENDIAN,
g_param_spec_enum ("endian", "Endian", "Force endian on drive",
GST_TYPE_PARANOIA_ENDIAN, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_READ_SPEED,
g_param_spec_int ("read_speed", "Read speed", "Read from device at specified speed",
G_MININT, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOC_OFFSET,
g_param_spec_int("toc_offset", "TOC offset", "Add <n> sectors to the values reported",
G_MININT,G_MAXINT,0,G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(klass), ARG_TOC_BIAS,
g_param_spec_boolean("toc_bias", "TOC bias",
"Assume that the beginning offset of track 1 as reported in the TOC "
"will be addressed as LBA 0. Necessary for some Toshiba drives to "
"get track boundaries",
TRUE,G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NEVER_SKIP,
g_param_spec_int ("never_skip", "Never skip",
"never accept any less than perfect data reconstruction (don't allow "
"'V's) but if [n] is given, skip after [n] retries without progress.",
0, G_MAXINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ABORT_ON_SKIP,
g_param_spec_boolean ("abort_on_skip", "Abort on skip", "Abort on imperfect reads/skips",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PARANOIA_MODE,
g_param_spec_enum ("paranoia_mode", "Paranoia mode", "Type of checking to perform",
GST_TYPE_PARANOIA_MODE, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DISCID,
g_param_spec_string ("discid", "discid", "The dics id",
NULL, G_PARAM_READABLE));
gobject_class->set_property = cdparanoia_set_property;
gobject_class->get_property = cdparanoia_get_property;
gstelement_class->change_state = cdparanoia_change_state;
gstelement_class->set_index = cdparanoia_set_index;
gstelement_class->get_index = cdparanoia_get_index;
}
static void
cdparanoia_init (CDParanoia *cdparanoia)
{
cdparanoia->srcpad =
gst_pad_new_from_template (GST_PAD_TEMPLATE_GET (cdparanoia_src_factory), "src");
gst_pad_set_get_function (cdparanoia->srcpad, cdparanoia_get);
gst_pad_set_event_function (cdparanoia->srcpad, cdparanoia_event);
gst_pad_set_event_mask_function (cdparanoia->srcpad, cdparanoia_get_event_mask);
gst_pad_set_convert_function (cdparanoia->srcpad, cdparanoia_convert);
gst_pad_set_query_function (cdparanoia->srcpad, cdparanoia_query);
gst_pad_set_query_type_function (cdparanoia->srcpad, cdparanoia_get_query_types);
gst_pad_set_formats_function (cdparanoia->srcpad, cdparanoia_get_formats);
gst_element_add_pad (GST_ELEMENT (cdparanoia), cdparanoia->srcpad);
cdparanoia->device = g_strdup ("/dev/cdrom");
cdparanoia->generic_device = NULL;
cdparanoia->default_sectors = -1;
cdparanoia->search_overlap = -1;
cdparanoia->endian = 0;
cdparanoia->read_speed = -1;
cdparanoia->toc_offset = 0;
cdparanoia->toc_bias = FALSE;
cdparanoia->never_skip = FALSE;
cdparanoia->paranoia_mode = 2;
cdparanoia->abort_on_skip = FALSE;
cdparanoia->total_seconds = 0;
cdparanoia->discont_pending = FALSE;
}
static void
cdparanoia_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
CDParanoia *src;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_CDPARANOIA (object));
src = CDPARANOIA (object);
switch (prop_id) {
case ARG_LOCATION:
if (src->device)
g_free (src->device);
/* clear the filename if we get a NULL (is that possible?) */
if (!g_ascii_strcasecmp (g_value_get_string (value), ""))
src->device = NULL;
/* otherwise set the new filename */
else
src->device = g_strdup (g_value_get_string (value));
break;
case ARG_GENERIC_DEVICE:
if (src->generic_device)
g_free (src->generic_device);
/* reset the device if we get a NULL (is that possible?) */
if (!g_ascii_strcasecmp (g_value_get_string (value), ""))
src->generic_device = NULL;
/* otherwise set the new filename */
else
src->generic_device = g_strdup (g_value_get_string (value));
break;
case ARG_DEFAULT_SECTORS:
src->default_sectors = g_value_get_int (value);
break;
case ARG_SEARCH_OVERLAP:
src->search_overlap = g_value_get_int (value);
break;
case ARG_ENDIAN:
src->endian = g_value_get_enum (value);
break;
case ARG_READ_SPEED:
src->read_speed = g_value_get_int (value);
break;
case ARG_TOC_OFFSET:
src->toc_offset = g_value_get_int (value);
break;
case ARG_TOC_BIAS:
src->toc_bias = g_value_get_boolean (value);
break;
case ARG_NEVER_SKIP:
src->never_skip = g_value_get_int (value);
break;
case ARG_ABORT_ON_SKIP:
src->abort_on_skip = g_value_get_boolean (value);
break;
case ARG_PARANOIA_MODE:
src->paranoia_mode = g_value_get_enum (value);
break;
default:
break;
}
}
static void
cdparanoia_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
CDParanoia *src;
g_return_if_fail (GST_IS_CDPARANOIA (object));
src = CDPARANOIA (object);
switch (prop_id) {
case ARG_LOCATION:
g_value_set_string (value, src->device);
break;
case ARG_GENERIC_DEVICE:
g_value_set_string (value, src->generic_device);
break;
case ARG_DEFAULT_SECTORS:
g_value_set_int (value, src->default_sectors);
break;
case ARG_SEARCH_OVERLAP:
g_value_set_int (value, src->search_overlap);
break;
case ARG_ENDIAN:
g_value_set_enum (value, src->endian);
break;
case ARG_READ_SPEED:
g_value_set_int (value, src->read_speed);
break;
case ARG_TOC_OFFSET:
g_value_set_int (value, src->toc_offset);
break;
case ARG_TOC_BIAS:
g_value_set_boolean (value, src->toc_bias);
break;
case ARG_NEVER_SKIP:
g_value_set_int (value, src->never_skip);
break;
case ARG_ABORT_ON_SKIP:
g_value_set_boolean (value, src->abort_on_skip);
break;
case ARG_PARANOIA_MODE:
g_value_set_enum (value, src->paranoia_mode);
break;
case ARG_DISCID:
/**
* 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_warning("DiscID on multisession discs might be broken. Use at own risk.");
g_value_set_string (value, src->discid);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
cdparanoia_callback (long inpos, int function)
{
}
static GstBuffer *
cdparanoia_get (GstPad *pad)
{
CDParanoia *src;
GstBuffer *buf;
src = CDPARANOIA (gst_pad_get_parent (pad));
g_return_val_if_fail (GST_FLAG_IS_SET (src, CDPARANOIA_OPEN), NULL);
/* stop things apropriatly */
if (src->cur_sector > src->segment_end_sector) {
GST_DEBUG (0, "setting EOS");
buf = GST_BUFFER (gst_event_new (GST_EVENT_EOS));
gst_element_set_eos (GST_ELEMENT (src));
}
else {
gint16 *cdda_buf;
gint64 timestamp;
GstFormat format;
/* read a sector */
cdda_buf = paranoia_read (src->p, cdparanoia_callback);
/* convert the sequence sector number to a timestamp */
format = GST_FORMAT_TIME;
timestamp = 0LL;
gst_pad_convert (src->srcpad, sector_format, src->seq,
&format, &timestamp);
/* have to copy the buffer for now since we don't own it... */
/* FIXME must ask monty about allowing ownership transfer */
buf = gst_buffer_new_and_alloc (CD_FRAMESIZE_RAW);
memcpy (GST_BUFFER_DATA (buf), cdda_buf, CD_FRAMESIZE_RAW);
GST_BUFFER_TIMESTAMP (buf) = timestamp;
/* update current sector */
src->cur_sector++;
src->seq++;
}
/* we're done, push the buffer off now */
return buf;
}
/* need some stuff to get a discid (cdparanoia doesn't do cddb but lets
* not stop other ppl doing it ;-) */
typedef int byte;
typedef struct
{
byte m;
byte s;
byte f;
}
toc_msf;
/* cdparanoia provides the toc in lba format dang we need it in msf so
* we have to convert it */
static inline void
lba_to_msf (const gint lba, byte *m, byte *s, byte *f)
{
gint lba2 = lba;
lba2 += CD_MSF_OFFSET;
lba2 &= 0xffffff;
*m = lba2 / (CD_SECS * CD_FRAMES);
lba2 %= (CD_SECS * CD_FRAMES);
*s = lba2 / CD_FRAMES;
*f = lba2 % CD_FRAMES;
*f += (*m) * 60 * 75;
*f += (*s) * 75;
}
static void
lba_toc_to_msf_toc (TOC *lba_toc, toc_msf *msf_toc, gint tracks)
{
gint i;
for (i = 0; i <= tracks; i++)
lba_to_msf (lba_toc[i].dwStartSector, &msf_toc[i].m, &msf_toc[i].s, &msf_toc[i].f);
}
/* the cddb hash function */
static guint
cddb_sum (gint n)
{
guint ret;
ret = 0;
while (n > 0) {
ret += (n % 10);
n /= 10;
}
return ret;
}
static void
cddb_discid (gchar *discid, toc_msf *toc, gint tracks)
{
guint i = 0, t = 0, n = 0;
while (i < tracks) {
n = n + cddb_sum ((toc[i].m * 60) + toc[i].s);
i++;
}
t = ((toc[tracks].m * 60) + toc[tracks].s) - ((toc[0].m * 60)
+ toc[0].s);
sprintf (discid, "%08x", ((n % 0xff) << 24 | t << 8 | tracks));
}
/* get all the cddb info at once */
static void
get_cddb_info (TOC *toc, gint tracks, gchar *discid, gint64 *offsets, gint64 *total_seconds)
{
toc_msf msf_toc[MAXTRK];
gint i;
gint64 *p = offsets;
lba_toc_to_msf_toc (toc, &msf_toc[0], tracks);
cddb_discid (discid, &msf_toc[0], tracks);
for (i = 0; i < tracks; i++) {
*p++ = msf_toc[i].f;
}
*total_seconds = msf_toc[tracks].f / 75;
}
static void
add_index_associations (CDParanoia *src)
{
int i;
for (i = 0; i < src->d->tracks; i++) {
gint64 sector;
sector = cdda_track_firstsector (src->d, i + 1);
gst_index_add_association (src->index, src->index_id,
GST_ASSOCIATION_FLAG_KEY_UNIT,
track_format, i,
sector_format, sector,
GST_FORMAT_TIME, (gint64) (((CD_FRAMESIZE_RAW >> 2) * sector * GST_SECOND) / 44100),
GST_FORMAT_BYTES, (gint64) (sector << 2),
GST_FORMAT_UNITS, (gint64) ((CD_FRAMESIZE_RAW >> 2) * sector),
NULL);
#if 0
g_print ("Added association for track %d\n", i + 1);
g_print ("Sector: %lld\n", sector);
g_print ("Time: %lld\n", (gint64) (((CD_FRAMESIZE_RAW >> 2) * sector * GST_SECOND) / 44100));
g_print ("Bytes: %lld\n", (gint64) (sector << 2));
g_print ("Units: %lld\n", (gint64) ((CD_FRAMESIZE_RAW >> 2) * sector));
g_print ("-----------\n");
#endif
}
}
/* open the file, necessary to go to RUNNING state */
static gboolean
cdparanoia_open (CDParanoia *src)
{
gint i;
gint paranoia_mode;
g_return_val_if_fail (!GST_FLAG_IS_SET (src, CDPARANOIA_OPEN), FALSE);
GST_DEBUG_ENTER ("(\"%s\",...)", gst_element_get_name (GST_ELEMENT (src)));
/* find the device */
if (src->generic_device != NULL) {
src->d = cdda_identify_scsi (src->generic_device, src->device, FALSE, NULL);
} else {
if (src->device != NULL) {
src->d = cdda_identify (src->device, FALSE, NULL);
} else {
src->d = cdda_identify ("/dev/cdrom", FALSE, NULL);
}
}
/* fail if the device couldn't be found */
if (src->d == NULL) {
GST_DEBUG (0, "couldn't open device");
return FALSE;
}
/* set verbosity mode */
cdda_verbose_set (src->d, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
/* set various other parameters */
if (src->default_sectors != -1) {
src->d->nsectors = src->default_sectors;
src->d->bigbuff = src->default_sectors * CD_FRAMESIZE_RAW;
}
/* open the disc */
if (cdda_open (src->d)) {
GST_DEBUG (0, "couldn't open disc");
cdda_close (src->d);
src->d = NULL;
return FALSE;
}
/* I don't like this here i would prefer it under get_cddb_info but for somereason
* when leaving the function it clobbers the allocated mem and all is lost bugger
*/
get_cddb_info (&src->d->disc_toc[0], src->d->tracks, src->discid,
src->offsets, &src->total_seconds);
g_object_freeze_notify (G_OBJECT (src));
g_object_notify (G_OBJECT (src), "discid");
g_object_thaw_notify (G_OBJECT (src));
if (src->toc_bias) {
src->toc_offset -= cdda_track_firstsector (src->d, 1);
}
for (i = 0; i < src->d->tracks + 1; i++) {
src->d->disc_toc[i].dwStartSector += src->toc_offset;
}
if (src->read_speed != -1) {
cdda_speed_set (src->d, src->read_speed);
}
/* save thse ones */
src->first_sector = cdda_disc_firstsector (src->d);
src->last_sector = cdda_disc_lastsector (src->d);
/* this is the default segment we will play */
src->segment_start_sector = src->first_sector;
src->segment_end_sector = src->last_sector;
/* create the paranoia struct and set it up */
src->p = paranoia_init (src->d);
if (src->p == NULL) {
GST_DEBUG (0, "couldn't create paranoia struct");
return FALSE;
}
paranoia_mode = src->paranoia_mode;
if (src->never_skip)
paranoia_mode |= PARANOIA_MODE_NEVERSKIP;
paranoia_modeset (src->p, paranoia_mode);
if (src->search_overlap != -1) {
paranoia_overlapset (src->p, src->search_overlap);
}
src->cur_sector = src->first_sector;
paranoia_seek (src->p, src->cur_sector, SEEK_SET);
GST_DEBUG (0, "successfully seek'd to beginning of disk");
GST_FLAG_SET (src, CDPARANOIA_OPEN);
if (src->index && GST_INDEX_IS_WRITABLE (src->index)) {
add_index_associations (src);
}
GST_DEBUG_LEAVE ("");
return TRUE;
}
/* close the file */
static void
cdparanoia_close (CDParanoia *src)
{
g_return_if_fail (GST_FLAG_IS_SET (src, CDPARANOIA_OPEN));
/* kill the paranoia state */
paranoia_free (src->p);
src->p = NULL;
src->total_seconds = 0LL;
/* close the disc */
cdda_close (src->d);
src->d = NULL;
GST_FLAG_UNSET (src, CDPARANOIA_OPEN);
}
static GstElementStateReturn
cdparanoia_change_state (GstElement *element)
{
CDParanoia *cdparanoia;
g_return_val_if_fail (GST_IS_CDPARANOIA (element), GST_STATE_FAILURE);
cdparanoia = CDPARANOIA (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if (!cdparanoia_open (CDPARANOIA (element))) {
g_warning ("cdparanoia: failed opening cd");
return GST_STATE_FAILURE;
}
cdparanoia->seq = 0;
break;
case GST_STATE_READY_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
/* FIXME: Need code here to reset element to start of cd */
break;
case GST_STATE_READY_TO_NULL:
cdparanoia_close (CDPARANOIA (element));
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance too ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static const GstEventMask *
cdparanoia_get_event_mask (GstPad *pad)
{
static const GstEventMask masks[] = {
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_CUR |
GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH },
{GST_EVENT_SEEK_SEGMENT, GST_SEEK_METHOD_SET |
GST_SEEK_METHOD_CUR |
GST_SEEK_METHOD_END |
GST_SEEK_FLAG_FLUSH },
{0,}
};
return masks;
}
static gboolean
cdparanoia_event (GstPad *pad, GstEvent *event)
{
CDParanoia *src;
gboolean res = TRUE;
src = CDPARANOIA (gst_pad_get_parent (pad));
if (!GST_FLAG_IS_SET (src, CDPARANOIA_OPEN)) {
g_print ("Not open\n");
goto error;
}
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
case GST_EVENT_SEEK_SEGMENT:
{
gint64 offset, endoffset;
gint format;
gint64 seg_start_sector = -1, seg_end_sector = -1;
format = GST_EVENT_SEEK_FORMAT (event);
offset = GST_EVENT_SEEK_OFFSET (event);
endoffset = GST_EVENT_SEEK_ENDOFFSET (event);
/* we can only seek on sectors, so we convert the requested
* offsets to sectors first */
if (offset != -1) {
res &= gst_pad_convert (src->srcpad, format, offset,
&sector_format, &seg_start_sector);
}
if (endoffset != -1) {
res &= gst_pad_convert (src->srcpad, format, endoffset,
&sector_format, &seg_end_sector);
}
if (!res) {
GST_DEBUG (0, "could not convert offsets to sectors");
goto error;
}
switch (GST_EVENT_SEEK_METHOD (event)) {
case GST_SEEK_METHOD_SET:
/* values are set for regular seek set */
break;
case GST_SEEK_METHOD_CUR:
if (seg_start_sector != -1) {
seg_start_sector += src->cur_sector;
}
if (seg_end_sector != -1) {
seg_end_sector += src->cur_sector;
}
break;
case GST_SEEK_METHOD_END:
if (seg_start_sector != -1) {
seg_start_sector = src->last_sector - seg_start_sector;
}
if (seg_end_sector != -1) {
seg_end_sector = src->last_sector - seg_end_sector;
}
break;
default:
goto error;
}
/* do we need to update the start sector? */
if (seg_start_sector != -1) {
seg_start_sector = CLAMP (seg_start_sector,
src->first_sector, src->last_sector);
if (paranoia_seek (src->p, seg_start_sector, SEEK_SET) > -1) {
GST_DEBUG (0, "seeked to %" G_GINT64_FORMAT, seg_start_sector);
src->segment_start_sector = seg_start_sector;;
src->cur_sector = src->segment_start_sector;
}
else {
goto error;
}
}
if (seg_end_sector != -1) {
seg_end_sector = CLAMP (seg_end_sector,
src->first_sector, src->last_sector);
src->segment_end_sector = seg_end_sector;;
}
GST_DEBUG (GST_CAT_PLUGIN_INFO, "configured for %d -> %d sectors\n",
src->segment_start_sector,
src->segment_end_sector);
break;
}
default:
goto error;
}
if (FALSE) {
error:
res = FALSE;
}
gst_event_unref (event);
return res;
}
static const GstFormat *
cdparanoia_get_formats (GstPad *pad)
{
static GstFormat formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_BYTES,
GST_FORMAT_UNITS,
0, /* filled later */
0, /* filled later */
0
};
formats[3] = track_format;
formats[4] = sector_format;
return formats;
}
static gboolean
cdparanoia_convert (GstPad *pad,
GstFormat src_format, gint64 src_value,
GstFormat *dest_format, gint64 *dest_value)
{
CDParanoia *src;
src = CDPARANOIA (gst_pad_get_parent (pad));
if (!GST_FLAG_IS_SET (src, CDPARANOIA_OPEN)) {
return FALSE;
}
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
src_value <<= 2; /* 4 bytes per sample */
case GST_FORMAT_UNITS:
*dest_value = src_value * 44100 / GST_SECOND;
break;
default:
if (*dest_format == track_format || *dest_format == sector_format) {
gint sector = (src_value * 44100) / ((CD_FRAMESIZE_RAW >> 2) * GST_SECOND);
if (*dest_format == sector_format) {
*dest_value = sector;
}
else {
*dest_value = cdda_sector_gettrack (src->d, sector) - 1;
}
}
else
return FALSE;
break;
}
break;
case GST_FORMAT_BYTES:
src_value >>= 2;
case GST_FORMAT_UNITS:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * 4;
break;
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND / 44100;
break;
default:
if (*dest_format == track_format || *dest_format == sector_format) {
gint sector = src_value / (CD_FRAMESIZE_RAW >> 2);
if (*dest_format == track_format) {
*dest_value = cdda_sector_gettrack (src->d, sector) - 1;
}
else {
*dest_value = sector;
}
}
else
return FALSE;
break;
}
break;
default:
{
gint sector;
if (src_format == track_format) {
/* some sanity checks */
if (src_value < 0 || src_value > src->d->tracks)
return FALSE;
sector = cdda_track_firstsector (src->d, src_value + 1);
}
else if (src_format == sector_format) {
sector = src_value;
}
else {
return FALSE;
}
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = ((CD_FRAMESIZE_RAW >> 2) * sector * GST_SECOND) / 44100;
break;
case GST_FORMAT_BYTES:
sector <<= 2;
case GST_FORMAT_UNITS:
*dest_value = (CD_FRAMESIZE_RAW >> 2) * sector;
break;
default:
if (*dest_format == sector_format) {
*dest_value = sector;
}
else if (*dest_format == track_format) {
/* if we go past the last sector, make sure to report the last track */
if (sector > src->last_sector)
*dest_value = cdda_sector_gettrack (src->d, src->last_sector);
else
*dest_value = cdda_sector_gettrack (src->d, sector) - 1;
}
else {
return FALSE;
}
break;
}
break;
}
}
return TRUE;
}
static const GstQueryType*
cdparanoia_get_query_types (GstPad *pad)
{
static const GstQueryType src_query_types[] = {
GST_QUERY_TOTAL,
GST_QUERY_POSITION,
GST_QUERY_START,
GST_QUERY_SEGMENT_END,
0
};
return src_query_types;
}
static gboolean
cdparanoia_query (GstPad *pad, GstQueryType type,
GstFormat *format, gint64 *value)
{
gboolean res = TRUE;
CDParanoia *src;
src = CDPARANOIA (gst_pad_get_parent (pad));
if (!GST_FLAG_IS_SET (src, CDPARANOIA_OPEN)) {
return FALSE;
}
switch (type) {
case GST_QUERY_TOTAL:
/* we take the last sector + 1 so that we also have the full
* size of that last sector */
res = gst_pad_convert (src->srcpad,
sector_format, src->last_sector + 1,
format, value);
break;
case GST_QUERY_POSITION:
/* bring our current sector to the requested format */
res = gst_pad_convert (src->srcpad,
sector_format, src->cur_sector,
format, value);
break;
case GST_QUERY_START:
res = gst_pad_convert (src->srcpad,
sector_format, src->segment_start_sector,
format, value);
break;
case GST_QUERY_SEGMENT_END:
res = gst_pad_convert (src->srcpad,
sector_format, src->segment_end_sector,
format, value);
break;
default:
res = FALSE;
break;
}
return res;
}
static void
cdparanoia_set_index (GstElement *element,
GstIndex *index)
{
CDParanoia *cdparanoia;
cdparanoia = CDPARANOIA (element);
cdparanoia->index = index;
gst_index_get_writer_id (index, GST_OBJECT (cdparanoia->srcpad),
&cdparanoia->index_id);
gst_index_add_format (index, cdparanoia->index_id, track_format);
gst_index_add_format (index, cdparanoia->index_id, sector_format);
}
static GstIndex *
cdparanoia_get_index (GstElement *element)
{
CDParanoia *cdparanoia;
cdparanoia = CDPARANOIA (element);
return cdparanoia->index;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
/* create an elementfactory for the cdparanoia element */
factory = gst_element_factory_new ("cdparanoia",
GST_TYPE_CDPARANOIA,
&cdparanoia_details);
g_return_val_if_fail (factory != NULL, FALSE);
/* register the source's caps */
gst_element_factory_add_pad_template (factory,
GST_PAD_TEMPLATE_GET (cdparanoia_src_factory));
/* and add the cdparanoia element factory to the plugin */
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"cdparanoia",
plugin_init
};
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