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/*
* Copyright 2008-2013 Various Authors
* Copyright 2004 Timo Hirvonen
*
* This program 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.
*
* This program 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 this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "ip.h"
#include "nomad.h"
#include "id3.h"
#include "ape.h"
#include "xmalloc.h"
#include "read_wrapper.h"
#include "debug.h"
#include "utils.h"
#include "comment.h"
#include <stdio.h>
#include <math.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
/* ------------------------------------------------------------------------- */
static ssize_t read_func(void *datasource, void *buffer, size_t count)
{
struct input_plugin_data *ip_data = datasource;
return read_wrapper(ip_data, buffer, count);
}
static off_t lseek_func(void *datasource, off_t offset, int whence)
{
struct input_plugin_data *ip_data = datasource;
return lseek(ip_data->fd, offset, whence);
}
static int close_func(void *datasource)
{
struct input_plugin_data *ip_data = datasource;
return close(ip_data->fd);
}
static struct nomad_callbacks callbacks = {
.read = read_func,
.lseek = lseek_func,
.close = close_func
};
/* ------------------------------------------------------------------------- */
static int mad_open(struct input_plugin_data *ip_data)
{
struct nomad *nomad;
const struct nomad_info *info;
int rc;
rc = nomad_open_callbacks(&nomad, ip_data, &callbacks);
switch (rc) {
case -NOMAD_ERROR_ERRNO:
return -1;
case -NOMAD_ERROR_FILE_FORMAT:
return -IP_ERROR_FILE_FORMAT;
}
ip_data->private = nomad;
info = nomad_info(nomad);
/* always 16-bit signed little-endian */
ip_data->sf = sf_rate(info->sample_rate) | sf_channels(info->channels) |
sf_bits(16) | sf_signed(1);
channel_map_init_waveex(info->channels, 0, ip_data->channel_map);
return 0;
}
static int mad_close(struct input_plugin_data *ip_data)
{
struct nomad *nomad;
nomad = ip_data->private;
nomad_close(nomad);
ip_data->fd = -1;
ip_data->private = NULL;
return 0;
}
static int mad_read(struct input_plugin_data *ip_data, char *buffer, int count)
{
struct nomad *nomad;
nomad = ip_data->private;
return nomad_read(nomad, buffer, count);
}
static int mad_seek(struct input_plugin_data *ip_data, double offset)
{
struct nomad *nomad;
nomad = ip_data->private;
return nomad_time_seek(nomad, offset);
}
static int mad_read_comments(struct input_plugin_data *ip_data,
struct keyval **comments)
{
struct nomad *nomad = ip_data->private;
const struct nomad_lame *lame = nomad_lame(nomad);
struct id3tag id3;
int fd, rc, save, i;
APETAG(ape);
GROWING_KEYVALS(c);
fd = open(ip_data->filename, O_RDONLY);
if (fd == -1) {
return -1;
}
d_print("filename: %s\n", ip_data->filename);
id3_init(&id3);
rc = id3_read_tags(&id3, fd, ID3_V1 | ID3_V2);
save = errno;
close(fd);
errno = save;
if (rc) {
if (rc == -1) {
d_print("error: %s\n", strerror(errno));
return -1;
}
d_print("corrupted tag?\n");
goto next;
}
for (i = 0; i < NUM_ID3_KEYS; i++) {
char *val = id3_get_comment(&id3, i);
if (val)
comments_add(&c, id3_key_names[i], val);
}
next:
id3_free(&id3);
rc = ape_read_tags(&ape, ip_data->fd, 0);
if (rc < 0)
goto out;
for (i = 0; i < rc; i++) {
char *k, *v;
k = ape_get_comment(&ape, &v);
if (!k)
break;
comments_add(&c, k, v);
free(k);
}
out:
ape_free(&ape);
/* add last so the other tags get preference */
if (lame && !isnan(lame->trackGain)) {
char buf[64];
if (!isnan(lame->peak)) {
sprintf(buf, "%f", lame->peak);
comments_add_const(&c, "replaygain_track_peak", buf);
}
sprintf(buf, "%+.1f dB", lame->trackGain);
comments_add_const(&c, "replaygain_track_gain", buf);
}
keyvals_terminate(&c);
*comments = c.keyvals;
return 0;
}
static int mad_duration(struct input_plugin_data *ip_data)
{
struct nomad *nomad = ip_data->private;
return nomad_info(nomad)->duration;
}
static long mad_bitrate(struct input_plugin_data *ip_data)
{
struct nomad *nomad = ip_data->private;
long bitrate = nomad_info(nomad)->avg_bitrate;
return bitrate != -1 ? bitrate : -IP_ERROR_FUNCTION_NOT_SUPPORTED;
}
static long mad_current_bitrate(struct input_plugin_data *ip_data)
{
struct nomad *nomad = ip_data->private;
return nomad_current_bitrate(nomad);
}
static char *mad_codec(struct input_plugin_data *ip_data)
{
struct nomad *nomad = ip_data->private;
switch (nomad_info(nomad)->layer) {
case 3:
return xstrdup("mp3");
case 2:
return xstrdup("mp2");
case 1:
return xstrdup("mp1");
}
return NULL;
}
static char *mad_codec_profile(struct input_plugin_data *ip_data)
{
struct nomad *nomad = ip_data->private;
const struct nomad_lame *lame = nomad_lame(nomad);
const char *mode = nomad_info(nomad)->vbr ? "VBR" : "CBR";
if (lame) {
/* LAME:
* 0: unknown
* 1: cbr
* 2: abr
* 3: vbr rh (--vbr-old)
* 4: vbr mtrh (--vbr-new)
* 5: vbr mt (obsolete)
*/
int method = lame->vbr_method;
if (method == 2)
mode = "ABR";
else if (method >= 3 && method <= 5) {
const struct nomad_xing *xing = nomad_xing(nomad);
if (xing && xing->flags & XING_SCALE && xing->scale && xing->scale <= 100) {
char buf[16];
int v = 10 - (xing->scale + 9) / 10;
/* quality (-q): 10 - (xing->scale - ((9 - v) * 10)) */
sprintf(buf, "VBR V%d", v);
return xstrdup(buf);
}
}
}
return xstrdup(mode);
}
const struct input_plugin_ops ip_ops = {
.open = mad_open,
.close = mad_close,
.read = mad_read,
.seek = mad_seek,
.read_comments = mad_read_comments,
.duration = mad_duration,
.bitrate = mad_bitrate,
.bitrate_current = mad_current_bitrate,
.codec = mad_codec,
.codec_profile = mad_codec_profile
};
const int ip_priority = 55;
const char * const ip_extensions[] = { "mp3", "mp2", NULL };
const char * const ip_mime_types[] = {
"audio/mpeg", "audio/x-mp3", "audio/x-mpeg", NULL
};
const char * const ip_options[] = { NULL };
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