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/*
* Copyright (C) 2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "input/despotify_input_plugin.h"
#include "input_plugin.h"
#include "tag.h"
#include "despotify_utils.h"
#include <glib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <despotify.h>
#include <stdio.h>
struct input_despotify {
struct input_stream base;
struct despotify_session *session;
struct ds_track *track;
struct tag *tag;
struct ds_pcm_data pcm;
size_t len_available;
bool eof;
};
static void
refill_buffer(struct input_despotify *ctx)
{
/* Wait until there is data */
while (1) {
int rc = despotify_get_pcm(ctx->session, &ctx->pcm);
if (rc == 0 && ctx->pcm.len) {
ctx->len_available = ctx->pcm.len;
break;
}
if (ctx->eof == true)
break;
if (rc < 0) {
g_debug("despotify_get_pcm error\n");
ctx->eof = true;
break;
}
/* Wait a while until next iteration */
usleep(50 * 1000);
}
}
static void callback(G_GNUC_UNUSED struct despotify_session* ds,
int sig, G_GNUC_UNUSED void* data, void* callback_data)
{
struct input_despotify *ctx = (struct input_despotify *)callback_data;
switch (sig) {
case DESPOTIFY_NEW_TRACK:
break;
case DESPOTIFY_TIME_TELL:
break;
case DESPOTIFY_TRACK_PLAY_ERROR:
g_debug("Track play error\n");
ctx->eof = true;
ctx->len_available = 0;
break;
case DESPOTIFY_END_OF_PLAYLIST:
ctx->eof = true;
g_debug("End of playlist: %d\n", ctx->eof);
break;
}
}
static struct input_stream *
input_despotify_open(const char *url, G_GNUC_UNUSED GError **error_r)
{
struct input_despotify *ctx;
struct despotify_session *session;
struct ds_link *ds_link;
struct ds_track *track;
if (!g_str_has_prefix(url, "spt://"))
return NULL;
session = mpd_despotify_get_session();
if (!session)
return NULL;
ds_link = despotify_link_from_uri(url + 6);
if (!ds_link) {
g_debug("Can't find %s\n", url);
return NULL;
}
if (ds_link->type != LINK_TYPE_TRACK) {
despotify_free_link(ds_link);
return NULL;
}
ctx = g_new(struct input_despotify, 1);
memset(ctx, 0, sizeof(*ctx));
track = despotify_link_get_track(session, ds_link);
despotify_free_link(ds_link);
if (!track) {
g_free(ctx);
return NULL;
}
input_stream_init(&ctx->base, &input_plugin_despotify, url);
ctx->session = session;
ctx->track = track;
ctx->tag = mpd_despotify_tag_from_track(track);
ctx->eof = false;
/* Despotify outputs pcm data */
ctx->base.mime = g_strdup("audio/x-mpd-cdda-pcm");
ctx->base.ready = true;
if (!mpd_despotify_register_callback(callback, ctx)) {
despotify_free_link(ds_link);
return NULL;
}
if (despotify_play(ctx->session, ctx->track, false) == false) {
despotify_free_track(ctx->track);
g_free(ctx);
return NULL;
}
return &ctx->base;
}
static size_t
input_despotify_read(struct input_stream *is, void *ptr, size_t size,
G_GNUC_UNUSED GError **error_r)
{
struct input_despotify *ctx = (struct input_despotify *)is;
size_t to_cpy = size;
if (ctx->len_available == 0)
refill_buffer(ctx);
if (ctx->len_available < size)
to_cpy = ctx->len_available;
memcpy(ptr, ctx->pcm.buf, to_cpy);
ctx->len_available -= to_cpy;
is->offset += to_cpy;
return to_cpy;
}
static void
input_despotify_close(struct input_stream *is)
{
struct input_despotify *ctx = (struct input_despotify *)is;
if (ctx->tag != NULL)
tag_free(ctx->tag);
mpd_despotify_unregister_callback(callback);
despotify_free_track(ctx->track);
input_stream_deinit(&ctx->base);
g_free(ctx);
}
static bool
input_despotify_eof(struct input_stream *is)
{
struct input_despotify *ctx = (struct input_despotify *)is;
return ctx->eof;
}
static bool
input_despotify_seek(G_GNUC_UNUSED struct input_stream *is,
G_GNUC_UNUSED goffset offset, G_GNUC_UNUSED int whence,
G_GNUC_UNUSED GError **error_r)
{
return false;
}
static struct tag *
input_despotify_tag(struct input_stream *is)
{
struct input_despotify *ctx = (struct input_despotify *)is;
struct tag *tag = ctx->tag;
ctx->tag = NULL;
return tag;
}
const struct input_plugin input_plugin_despotify = {
.name = "spt",
.open = input_despotify_open,
.close = input_despotify_close,
.read = input_despotify_read,
.eof = input_despotify_eof,
.seek = input_despotify_seek,
.tag = input_despotify_tag,
};
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