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Add mmc routine to get the ISRC information on a CD that is in the q subchannel

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but not showing up in the CDTEXT. Contributed by Scot C. Bontrager.
This commit is contained in:
rocky
2011-05-17 22:59:36 -04:00
parent a20dbc952c
commit d10938c43c
3 changed files with 61 additions and 11 deletions
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5
THANKS
View File

@@ -75,3 +75,8 @@ Daniel Schwarz
Robert William Fuller
get_track_pregap_lba, get_track_pregap_lsn. Section on "CD-DA pregap"
in libcdio manual.
Scot C. Bontrager
mmc routine to get the ISRC information on a CD that is in the q subchannel
but not showing up in the CDTEXT.

21
include/cdio/mmc.h
View File

@@ -528,16 +528,29 @@ typedef struct mmc_cdb_s {
driver_return_code_t mmc_audio_get_volume (CdIo_t *p_cdio, /*out*/
mmc_audio_volume_t *p_volume);
/**
/**
Read Audio Subchannel information
@param p_cdio the CD object to be acted upon.
@param p_subchannel place for returned subchannel information
*/
driver_return_code_t
mmc_audio_read_subchannel (CdIo_t *p_cdio,
*/
driver_return_code_t
mmc_audio_read_subchannel (CdIo_t *p_cdio,
/*out*/ cdio_subchannel_t *p_subchannel);
/**
Read ISRC Subchannel information. Contributed by
Scot C. Bontrager (scot@indievisible.org)
May 15, 2011 -
@param p_cdio the CD object to be acted upon.
@param track the track you to get ISRC info
@param buf place to put ISRC info
*/
driver_return_code_t
mmc_isrc_track_read_subchannel (CdIo_t *p_cdio, /*in*/ const track_t track,
/*out*/ char *p_isrc);
/**
Return a string containing the name of the audio state as returned from
the Q_SUBCHANNEL.

38
lib/driver/mmc/mmc.c
View File

@@ -475,6 +475,41 @@ mmc_audio_read_subchannel (CdIo_t *p_cdio, cdio_subchannel_t *p_subchannel)
return i_rc;
}
/**
Read ISRC Subchannel information. Contributed by
Scot C. Bontrager (scot@indievisible.org)
May 15, 2011 -
@param p_cdio the CD object to be acted upon.
@param track the track you to get ISRC info
@param buf place to put ISRC info
*/
driver_return_code_t
mmc_isrc_track_read_subchannel (CdIo_t *p_cdio, /*in*/ const track_t track,
/*out*/ char *p_isrc)
{
mmc_cdb_t cdb = {{0, }};
driver_return_code_t i_rc;
char buf[28] = { 0, };
if (!p_cdio) return DRIVER_OP_UNINIT;
CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_READ_SUBCHANNEL);
CDIO_MMC_SET_READ_LENGTH8(cdb.field, sizeof(buf));
cdb.field[1] = 0x0;
cdb.field[2] = 1 << 6;
cdb.field[3] = CDIO_SUBCHANNEL_TRACK_ISRC; /* 0x03 */
cdb.field[6] = track;
i_rc = mmc_run_cmd(p_cdio, mmc_timeout_ms, &cdb, SCSI_MMC_DATA_READ,
sizeof(buf), buf);
if (DRIVER_OP_SUCCESS == i_rc) {
strncpy(p_isrc, &buf[9], sizeof(buf)-9);
}
return i_rc;
}
/**
Get the block size used in read requests, via MMC (e.g. READ_10,
READ_MSF, ...)
@@ -1015,9 +1050,6 @@ mmc_set_blocksize ( const CdIo_t *p_cdio, uint16_t i_blocksize)
i_blocksize);
}
/*
* Local variables: