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authorSimon Kagstrom <simon.kagstrom@gmail.com>2011-03-27 08:41:05 +0200
committerMax Kellermann <max@duempel.org>2011-03-29 17:01:16 +0200
commit124d1a594202319d254c41d1e568d869ea74dafb (patch)
treee313f14785c2d1f2bf6d2a5242f1a462c090b1e2 /src/input/despotify_input_plugin.c
parenteec77b3ae7d732547f65a6ae838d8acfd661dc17 (diff)
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input: Add despotify input plugin
For Spotify tracks. Uses a spt URI, so with mpc you can play tracks with e.g., mpc add spt://spotify:track:5qENVY0YEdZ7fiuOax70x1 mpc play Uses the pcm_decoder_plugin for the output
Diffstat (limited to '')
-rw-r--r--src/input/despotify_input_plugin.c226
1 files changed, 226 insertions, 0 deletions
diff --git a/src/input/despotify_input_plugin.c b/src/input/despotify_input_plugin.c
new file mode 100644
index 000000000..b63663c50
--- /dev/null
+++ b/src/input/despotify_input_plugin.c
@@ -0,0 +1,226 @@
+/*
+ * 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,
+};