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;;; emms-librefm-stream.el --- Libre.FM streaming
;; Copyright (C) 2014 Free Software Foundation, Inc.
;; Author: Yoni Rabkin <yrk@gnu.org>
;; Keywords: emms, libre.fm, GNU FM
;; EMMS 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 3, or (at your option)
;; any later version.
;;
;; EMMS 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 EMMS; see the file COPYING. If not, write to the Free
;; Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301, USA.
;;; Code:
(require 'emms-librefm-scrobbler)
(defvar emms-librefm-stream-host-url
"alpha.libre.fm"
"URL for the streaming host")
(defvar emms-librefm-stream-debug
""
"Temporary debug information.")
;;; ------------------------------------------------------------------
;;; radio handshake
;;; ------------------------------------------------------------------
;; http://alpha.libre.fm/radio/handshake.php?version=1.3.0.58&platform=linux&username=USERNAME&passwordmd5=PASSWORDMD5&language=en
(defun emms-librefm-stream-tune-handshake-string ()
(when (not emms-librefm-scrobbler-username)
(error "null username"))
(when (not emms-librefm-scrobbler-password)
(error "null password"))
(let ((url (concat "http://"
emms-librefm-stream-host-url
"/radio/handshake.php?"
"version=1.3.0.58" "&"
"platform=linux" "&"
"username=" (url-encode-url emms-librefm-scrobbler-username) "&"
"passwordmd5=" (md5 emms-librefm-scrobbler-password) "&"
"language=en")))
url))
(defun emms-librefm-stream-tune-handshake-call ()
""
(let ((url-request-method "POST"))
(let ((response
(url-retrieve-synchronously
(emms-librefm-stream-tune-handshake-string))))
(setq emms-librefm-stream-debug
(with-current-buffer response
(buffer-substring-no-properties (point-min)
(point-max))))
response)))
;;; ------------------------------------------------------------------
;;; tuning
;;; ------------------------------------------------------------------
(defun emms-librefm-stream-tune-string (session-id station)
""
(when (not session-id)
(error "null session id"))
(when (not station)
(error "null station"))
(let ((url (concat "http://"
emms-librefm-stream-host-url
"/radio/adjust.php?"
"session=" session-id "&"
"url=" (url-encode-url station))))
url))
(defun emms-librefm-stream-tune-call (session-id station)
""
(let ((url-request-method "POST"))
(let ((response
(url-retrieve-synchronously
(emms-librefm-stream-tune-string
session-id station))))
(setq emms-librefm-stream-debug
(with-current-buffer response
(buffer-substring-no-properties (point-min)
(point-max))))
response)))
(defun emms-librefm-stream-handle-tune-response (resbuf)
"Handle the tune server response."
(when (not (bufferp resbuf))
(error "response not a buffer"))
(with-current-buffer resbuf
(goto-char (point-min))
(when (not (re-search-forward "^.*200 OK$" (point-at-eol) t))
(error "bad HTTP server response"))
;; go to the start of the FM response
(when (not (re-search-forward "\n\n" (point-max) t))
(error "bad FM server response"))
(let ((status (buffer-substring (point-at-bol)
(point-at-eol))))
(cond ((string= status "OK") 'ok)
((string= status "BADSESSION") 'badsession)
(t (error "unhandled response status: [%s]" status))))))
(provide 'emms-librefm-stream)
;;; emms-librefm-stream.el ends here
|
