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authorMax Kellermann <max@duempel.org>2012-05-29 23:15:41 +0200
committerMax Kellermann <max@duempel.org>2012-05-29 23:15:41 +0200
commit457d98c8605c3406a2f83f8f099abe0048968efb (patch)
tree16c57c4ab55a219384eaed1a16fb902403a4994e /src/output/raop_output_plugin.c
parent3c3f1b7ff27c13b817a7a94ef7605e06c93e4ff2 (diff)
downloadmpd-457d98c8605c3406a2f83f8f099abe0048968efb.tar.gz
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mpd-457d98c8605c3406a2f83f8f099abe0048968efb.zip
output/raop: delete the RAOP plugin
This plugin is horrible code, I mean it. Last year, I tried hard to fix it, but I figured would take less time to do a full rewrite. Given that I don't even have any device that supports RAOP, I can't do that properly. After 16 months, nobody volunteered for fixing it. Hereby, I delete it, because having no RAOP plugin is better than having this mess. Sorry.
Diffstat (limited to '')
-rw-r--r--src/output/raop_output_plugin.c1056
1 files changed, 0 insertions, 1056 deletions
diff --git a/src/output/raop_output_plugin.c b/src/output/raop_output_plugin.c
deleted file mode 100644
index 6177b9b7d..000000000
--- a/src/output/raop_output_plugin.c
+++ /dev/null
@@ -1,1056 +0,0 @@
-/*
- * Copyright (C) 2003-2011 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 "raop_output_plugin.h"
-#include "output_api.h"
-#include "mixer_list.h"
-#include "fd_util.h"
-#include "ntp_server.h"
-#include "rtsp_client.h"
-#include "glib_compat.h"
-
-#include <glib.h>
-#include <unistd.h>
-#include <sys/time.h>
-#include <openssl/aes.h>
-#include <openssl/err.h>
-#include <openssl/rand.h>
-#include <openssl/rsa.h>
-#include <openssl/engine.h>
-
-#ifndef WIN32
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#endif
-
-#undef G_LOG_DOMAIN
-#define G_LOG_DOMAIN "raop"
-
-struct play_state {
- bool playing;
- unsigned short seq_num;
- unsigned int rtptime;
- unsigned int sync_src;
- unsigned int start_rtptime;
- struct timeval start_time;
- struct timeval last_send;
-};
-
-/*********************************************************************/
-
-enum pause_state {
- NO_PAUSE = 0,
- OP_PAUSE,
- NODATA_PAUSE,
-};
-
-#define MINIMUM_SAMPLE_SIZE 32
-
-#define RAOP_FD_READ (1<<0)
-#define RAOP_FD_WRITE (1<<1)
-
-/*********************************************************************/
-
-struct encrypt_data {
- AES_KEY ctx;
- unsigned char iv[16]; // initialization vector for aes-cbc
- unsigned char nv[16]; // next vector for aes-cbc
- unsigned char key[16]; // key for aes-cbc
-};
-
-/*********************************************************************/
-
-struct raop_data {
- struct audio_output base;
-
- struct rtspcl_data *rtspcl;
- const char *addr; // target host address
- short rtsp_port;
- struct sockaddr_in ctrl_addr;
- struct sockaddr_in data_addr;
-
- bool is_master;
- struct raop_data *next;
-
- unsigned volume;
-
- GMutex *control_mutex;
-
- bool started;
- bool paused;
-};
-
-/*********************************************************************/
-
-struct control_data {
- unsigned short port;
- int fd;
-};
-
-/*********************************************************************/
-
-#define NUMSAMPLES 352
-#define RAOP_BUFFER_SIZE NUMSAMPLES * 4
-#define RAOP_HEADER_SIZE 12
-#define ALAC_MAX_HEADER_SIZE 8
-#define RAOP_MAX_PACKET_SIZE RAOP_BUFFER_SIZE + RAOP_HEADER_SIZE + ALAC_MAX_HEADER_SIZE
-
-// session
-struct raop_session_data {
- struct raop_data *raop_list;
- struct ntp_server ntp;
- struct control_data ctrl;
- struct encrypt_data encrypt;
- struct play_state play_state;
-
- int data_fd;
-
- unsigned char buffer[RAOP_BUFFER_SIZE];
- size_t bufferSize;
-
- unsigned char data[RAOP_MAX_PACKET_SIZE];
- int wblk_wsize;
- int wblk_remsize;
-
- GMutex *data_mutex;
- GMutex *list_mutex;
-};
-
-/*********************************************************************/
-
-static struct raop_session_data *raop_session = NULL;
-
-/**
- * The quark used for GError.domain.
- */
-static inline GQuark
-raop_output_quark(void)
-{
- return g_quark_from_static_string("raop_output");
-}
-
-static void
-raop_session_free(struct raop_session_data *session)
-{
- assert(session != NULL);
- assert(session->raop_list == NULL);
-
- ntp_server_close(&session->ntp);
-
- if (session->data_mutex != NULL)
- g_mutex_free(session->data_mutex);
-
- if (session->list_mutex != NULL)
- g_mutex_free(session->list_mutex);
-
- if (raop_session->data_fd >= 0)
- close_socket(raop_session->data_fd);
-
- if (raop_session->ctrl.fd >= 0)
- close_socket(raop_session->ctrl.fd);
-
- g_free(session);
-}
-
-static struct raop_session_data *
-raop_session_new(GError **error_r)
-{
- struct raop_session_data *session = g_new(struct raop_session_data, 1);
- session->raop_list = NULL;
-
- session->data_mutex = g_mutex_new();
- session->list_mutex = g_mutex_new();
-
- ntp_server_init(&session->ntp);
- session->ctrl.port = 6001;
- session->ctrl.fd = -1;
- session->play_state.playing = false;
- session->play_state.seq_num = (short) g_random_int();
- session->play_state.rtptime = g_random_int();
- session->play_state.sync_src = g_random_int();
- session->play_state.last_send.tv_sec = 0;
- session->play_state.last_send.tv_usec = 0;
- session->data_fd = -1;
-
- if (!RAND_bytes(session->encrypt.iv, sizeof(session->encrypt.iv)) ||
- !RAND_bytes(session->encrypt.key, sizeof(session->encrypt.key))) {
- raop_session_free(session);
- g_set_error(error_r, raop_output_quark(), 0,
- "RAND_bytes error code=%ld", ERR_get_error());
- return NULL;
- }
- memcpy(session->encrypt.nv, session->encrypt.iv, sizeof(session->encrypt.nv));
- for (unsigned i = 0; i < 16; i++) {
- printf("0x%x ", session->encrypt.key[i]);
- }
- printf("\n");
- AES_set_encrypt_key(session->encrypt.key, 128, &session->encrypt.ctx);
-
- memset(session->buffer, 0, RAOP_BUFFER_SIZE);
- session->bufferSize = 0;
-
- return session;
-}
-
-static struct raop_data *
-new_raop_data(const struct config_param *param, GError **error_r)
-{
- struct raop_data *ret = g_new(struct raop_data, 1);
- if (!ao_base_init(&ret->base, &raop_output_plugin, param, error_r)) {
- g_free(ret);
- return NULL;
- }
-
- ret->control_mutex = g_mutex_new();
-
- ret->next = NULL;
- ret->is_master = 0;
- ret->started = 0;
- ret->paused = 0;
-
- if (raop_session == NULL &&
- (raop_session = raop_session_new(error_r)) == NULL) {
- g_mutex_free(ret->control_mutex);
- ao_base_finish(&ret->base);
- g_free(ret);
- return NULL;
- }
-
- return ret;
-}
-
-/*
- * remove one character from a string
- * return the number of deleted characters
- */
-static int
-remove_char_from_string(char *str, char c)
-{
- char *src, *dst;
-
- /* skip all characters that don't need to be copied */
- src = strchr(str, c);
- if (!src)
- return 0;
-
- for (dst = src; *src; src++)
- if (*src != c)
- *(dst++) = *src;
-
- *dst = '\0';
-
- return src - dst;
-}
-
-/* bind an opened socket to specified hostname and port.
- * if hostname=NULL, use INADDR_ANY.
- * if *port=0, use dynamically assigned port
- */
-static int bind_host(int sd, char *hostname, unsigned long ulAddr,
- unsigned short *port, GError **error_r)
-{
- struct sockaddr_in my_addr;
- socklen_t nlen = sizeof(struct sockaddr);
- struct hostent *h;
-
- memset(&my_addr, 0, sizeof(my_addr));
- /* use specified hostname */
- if (hostname) {
- /* get server IP address (no check if input is IP address or DNS name) */
- h = gethostbyname(hostname);
- if (h == NULL) {
- if (strstr(hostname, "255.255.255.255") == hostname) {
- my_addr.sin_addr.s_addr=-1;
- } else {
- if ((my_addr.sin_addr.s_addr = inet_addr(hostname)) == 0xFFFFFFFF) {
- g_set_error(error_r, raop_output_quark(), 0,
- "failed to resolve host '%s'",
- hostname);
- return -1;
- }
- }
- my_addr.sin_family = AF_INET;
- } else {
- my_addr.sin_family = h->h_addrtype;
- memcpy((char *) &my_addr.sin_addr.s_addr,
- h->h_addr_list[0], h->h_length);
- }
- } else {
- // if hostname=NULL, use INADDR_ANY
- if (ulAddr)
- my_addr.sin_addr.s_addr = ulAddr;
- else
- my_addr.sin_addr.s_addr = htonl(INADDR_ANY);
- my_addr.sin_family = AF_INET;
- }
-
- /* bind a specified port */
- my_addr.sin_port = htons(*port);
-
- if (bind(sd, (struct sockaddr *) &my_addr, sizeof(my_addr)) < 0) {
- g_set_error(error_r, raop_output_quark(), errno,
- "failed to bind socket: %s",
- g_strerror(errno));
- return -1;
- }
-
- if (*port == 0) {
- getsockname(sd, (struct sockaddr *) &my_addr, &nlen);
- *port = ntohs(my_addr.sin_port);
- }
-
- return 0;
-}
-
-/*
- * open udp port
- */
-static int
-open_udp_socket(char *hostname, unsigned short *port,
- GError **error_r)
-{
- int sd;
- const int size = 30000;
-
- /* socket creation */
- sd = socket(PF_INET, SOCK_DGRAM, 0);
- if (sd < 0) {
- g_set_error(error_r, raop_output_quark(), errno,
- "failed to create UDP socket: %s",
- g_strerror(errno));
- return -1;
- }
- if (setsockopt(sd, SOL_SOCKET, SO_SNDBUF, (const char *) &size, sizeof(size)) < 0) {
- g_set_error(error_r, raop_output_quark(), errno,
- "failed to set UDP buffer size: %s",
- g_strerror(errno));
- return -1;
- }
- if (bind_host(sd, hostname, 0, port, error_r)) {
- close_socket(sd);
- return -1;
- }
-
- return sd;
-}
-
-static bool
-get_sockaddr_by_host(const char *host, short destport,
- struct sockaddr_in *addr,
- GError **error_r)
-{
- struct hostent *h;
-
- h = gethostbyname(host);
- if (h) {
- addr->sin_family = h->h_addrtype;
- memcpy((char *) &addr->sin_addr.s_addr, h->h_addr_list[0], h->h_length);
- } else {
- addr->sin_family = AF_INET;
- if ((addr->sin_addr.s_addr=inet_addr(host))==0xFFFFFFFF) {
- g_set_error(error_r, rtsp_client_quark(), 0,
- "failed to resolve host '%s'", host);
- return false;
- }
- }
- addr->sin_port = htons(destport);
- return true;
-}
-
-/*
- * Calculate the current NTP time, store it in the buffer.
- */
-static void
-fill_int(unsigned char *buffer, uint32_t value)
-{
- uint32_t be = GINT32_TO_BE(value);
- memcpy(buffer, &be, sizeof(be));
-}
-
-/*
- * Store time in the NTP format in the buffer
- */
-static void
-fill_time_buffer_with_time(unsigned char *buffer, struct timeval *tout)
-{
- unsigned long secs_to_baseline = 964697997;
- double fraction;
- unsigned long long_fraction;
- unsigned long secs;
-
- fraction = ((double) tout->tv_usec) / 1000000.0;
- long_fraction = (unsigned long) (fraction * 256.0 * 256.0 * 256.0 * 256.0);
- secs = secs_to_baseline + tout->tv_sec;
- fill_int(buffer, secs);
- fill_int(buffer + 4, long_fraction);
-}
-
-static void
-get_time_for_rtp(struct play_state *state, struct timeval *tout)
-{
- unsigned long rtp_diff = state->rtptime - state->start_rtptime;
- unsigned long add_secs = rtp_diff / 44100;
- unsigned long add_usecs = (((rtp_diff % 44100) * 10000) / 441) % 1000000;
- tout->tv_sec = state->start_time.tv_sec + add_secs;
- tout->tv_usec = state->start_time.tv_usec + add_usecs;
- if (tout->tv_usec >= 1000000) {
- tout->tv_sec++;
- tout->tv_usec = tout->tv_usec % 1000000;
- }
-}
-
-/*
- * Send a control command
- */
-static bool
-send_control_command(struct control_data *ctrl, struct raop_data *rd,
- struct play_state *state,
- GError **error_r)
-{
- unsigned char buf[20];
- int diff;
- int num_bytes;
- struct timeval ctrl_time;
-
- diff = 88200;
- if (rd->started) {
- buf[0] = 0x80;
- diff += NUMSAMPLES;
- } else {
- buf[0] = 0x90;
- state->playing = true;
- state->start_rtptime = state->rtptime;
- }
- buf[1] = 0xd4;
- buf[2] = 0x00;
- buf[3] = 0x07;
- fill_int(buf + 4, state->rtptime - diff);
- get_time_for_rtp(state, &ctrl_time);
- fill_time_buffer_with_time(buf + 8, &ctrl_time);
- fill_int(buf + 16, state->rtptime);
-
- num_bytes = sendto(ctrl->fd, (const void *)buf, sizeof(buf), 0,
- (struct sockaddr *)&rd->ctrl_addr,
- sizeof(rd->ctrl_addr));
- if (num_bytes < 0) {
- g_set_error(error_r, raop_output_quark(), errno,
- "Unable to send control command: %s",
- g_strerror(errno));
- return false;
- }
-
- return true;
-}
-
-static int rsa_encrypt(const unsigned char *text, int len, unsigned char *res)
-{
- RSA *rsa;
- gsize usize;
- unsigned char *modulus;
- unsigned char *exponent;
- int size;
-
- char n[] =
- "59dE8qLieItsH1WgjrcFRKj6eUWqi+bGLOX1HL3U3GhC/j0Qg90u3sG/1CUtwC"
- "5vOYvfDmFI6oSFXi5ELabWJmT2dKHzBJKa3k9ok+8t9ucRqMd6DZHJ2YCCLlDR"
- "KSKv6kDqnw4UwPdpOMXziC/AMj3Z/lUVX1G7WSHCAWKf1zNS1eLvqr+boEjXuB"
- "OitnZ/bDzPHrTOZz0Dew0uowxf/+sG+NCK3eQJVxqcaJ/vEHKIVd2M+5qL71yJ"
- "Q+87X6oV3eaYvt3zWZYD6z5vYTcrtij2VZ9Zmni/UAaHqn9JdsBWLUEpVviYnh"
- "imNVvYFZeCXg/IdTQ+x4IRdiXNv5hEew==";
- char e[] = "AQAB";
-
- rsa = RSA_new();
-
- modulus = g_base64_decode(n, &usize);
- rsa->n = BN_bin2bn(modulus, usize, NULL);
- exponent = g_base64_decode(e, &usize);
- rsa->e = BN_bin2bn(exponent, usize, NULL);
- g_free(modulus);
- g_free(exponent);
- size = RSA_public_encrypt(len, text, res, rsa, RSA_PKCS1_OAEP_PADDING);
-
- RSA_free(rsa);
- return size;
-}
-
-static int
-raop_encrypt(struct encrypt_data *encryp, unsigned char *data, int size)
-{
- // any bytes that fall beyond the last 16 byte page should be sent
- // in the clear
- int alt_size = size - (size % 16);
-
- memcpy(encryp->nv, encryp->iv, 16);
-
- AES_cbc_encrypt(data, data, alt_size, &encryp->ctx, encryp->nv, 1);
-
- return size;
-}
-
-/* write bits filed data, *bpos=0 for msb, *bpos=7 for lsb
- d=data, blen=length of bits field
-*/
-static inline void
-bits_write(unsigned char **p, unsigned char d, int blen, int *bpos)
-{
- int lb, rb, bd;
- lb =7 - *bpos;
- rb = lb - blen + 1;
- if (rb >= 0) {
- bd = d << rb;
- if (*bpos)
- **p |= bd;
- else
- **p = bd;
- *bpos += blen;
- } else {
- bd = d >> -rb;
- **p |= bd;
- *p += 1;
- **p = d << (8 + rb);
- *bpos = -rb;
- }
-}
-
-static bool
-wrap_pcm(unsigned char *buffer, int bsize, int *size, unsigned char *inData, int inSize)
-{
- unsigned char one[4];
- int count = 0;
- int bpos = 0;
- unsigned char *bp = buffer;
- int i, nodata = 0;
- bits_write(&bp, 1, 3, &bpos); // channel=1, stereo
- bits_write(&bp, 0, 4, &bpos); // unknown
- bits_write(&bp, 0, 8, &bpos); // unknown
- bits_write(&bp, 0, 4, &bpos); // unknown
- if (bsize != 4096 && false)
- bits_write(&bp, 1, 1, &bpos); // hassize
- else
- bits_write(&bp, 0, 1, &bpos); // hassize
- bits_write(&bp, 0, 2, &bpos); // unused
- bits_write(&bp, 1, 1, &bpos); // is-not-compressed
- if (bsize != 4096 && false) {
- // size of data, integer, big endian
- bits_write(&bp, (bsize >> 24) & 0xff, 8, &bpos);
- bits_write(&bp, (bsize >> 16) & 0xff, 8, &bpos);
- bits_write(&bp, (bsize >> 8) & 0xff, 8, &bpos);
- bits_write(&bp, bsize&0xff, 8, &bpos);
- }
- while (1) {
- if (inSize <= count * 4) nodata = 1;
- if (nodata) break;
- one[0] = inData[count * 4];
- one[1] = inData[count * 4 + 1];
- one[2] = inData[count * 4 + 2];
- one[3] = inData[count * 4 + 3];
-
-#if BYTE_ORDER == BIG_ENDIAN
- bits_write(&bp, one[0], 8, &bpos);
- bits_write(&bp, one[1], 8, &bpos);
- bits_write(&bp, one[2], 8, &bpos);
- bits_write(&bp, one[3], 8, &bpos);
-#else
- bits_write(&bp, one[1], 8, &bpos);
- bits_write(&bp, one[0], 8, &bpos);
- bits_write(&bp, one[3], 8, &bpos);
- bits_write(&bp, one[2], 8, &bpos);
-#endif
-
- if (++count == bsize) break;
- }
- if (!count) return false; // when no data at all, it should stop playing
- /* when readable size is less than bsize, fill 0 at the bottom */
- for(i = 0; i < (bsize - count) * 4; i++) {
- bits_write(&bp, 0, 8, &bpos);
- }
- *size = (int)(bp - buffer);
- if (bpos) *size += 1;
- return true;
-}
-
-static bool
-raopcl_connect(struct raop_data *rd, GError **error_r)
-{
- unsigned char buf[4 + 8 + 16];
- char sid[16];
- char sci[24];
- char act_r[17];
- char *sac=NULL, *key = NULL, *iv = NULL;
- char sdp[1024];
- int rval = false;
- unsigned char rsakey[512];
- struct timeval current_time;
- unsigned int sessionNum;
- int i;
-
-
- gettimeofday(&current_time,NULL);
- sessionNum = current_time.tv_sec + 2082844804;
-
- RAND_bytes(buf, sizeof(buf));
- sprintf(act_r, "%u", (unsigned int) g_random_int());
- sprintf(sid, "%u", sessionNum);
- sprintf(sci, "%08x%08x", *((int *)(buf + 4)), *((int *)(buf + 8)));
- sac = g_base64_encode(buf + 12, 16);
- rd->rtspcl = rtspcl_open();
- rtspcl_set_useragent(rd->rtspcl, "iTunes/8.1.1 (Macintosh; U; PPC Mac OS X 10.4)");
- rtspcl_add_exthds(rd->rtspcl, "Client-Instance", sci);
- rtspcl_add_exthds(rd->rtspcl, "DACP-ID", sci);
- rtspcl_add_exthds(rd->rtspcl, "Active-Remote", act_r);
- if (!rtspcl_connect(rd->rtspcl, rd->addr, rd->rtsp_port, sid, error_r))
- goto erexit;
-
- i = rsa_encrypt(raop_session->encrypt.key, 16, rsakey);
- key = g_base64_encode(rsakey, i);
- remove_char_from_string(key, '=');
- iv = g_base64_encode(raop_session->encrypt.iv, 16);
- remove_char_from_string(iv, '=');
- sprintf(sdp,
- "v=0\r\n"
- "o=iTunes %s 0 IN IP4 %s\r\n"
- "s=iTunes\r\n"
- "c=IN IP4 %s\r\n"
- "t=0 0\r\n"
- "m=audio 0 RTP/AVP 96\r\n"
- "a=rtpmap:96 AppleLossless\r\n"
- "a=fmtp:96 %d 0 16 40 10 14 2 255 0 0 44100\r\n"
- "a=rsaaeskey:%s\r\n"
- "a=aesiv:%s\r\n",
- sid, rtspcl_local_ip(rd->rtspcl), rd->addr, NUMSAMPLES, key, iv);
- remove_char_from_string(sac, '=');
- // rtspcl_add_exthds(rd->rtspcl, "Apple-Challenge", sac);
- if (!rtspcl_announce_sdp(rd->rtspcl, sdp, error_r))
- goto erexit;
- // if (!rtspcl_mark_del_exthds(rd->rtspcl, "Apple-Challenge")) goto erexit;
- if (!rtspcl_setup(rd->rtspcl, NULL,
- raop_session->ctrl.port, raop_session->ntp.port,
- error_r))
- goto erexit;
-
- if (!get_sockaddr_by_host(rd->addr, rd->rtspcl->control_port,
- &rd->ctrl_addr, error_r))
- goto erexit;
-
- if (!get_sockaddr_by_host(rd->addr, rd->rtspcl->server_port,
- &rd->data_addr, error_r))
- goto erexit;
-
- if (!rtspcl_record(rd->rtspcl,
- raop_session->play_state.seq_num,
- raop_session->play_state.rtptime,
- error_r))
- goto erexit;
-
- rval = true;
-
- erexit:
- g_free(sac);
- g_free(key);
- g_free(iv);
- return rval;
-}
-
-static int
-difference (struct timeval *t1, struct timeval *t2)
-{
- int ret = 150000000;
- if (t1->tv_sec - t2->tv_sec < 150) {
- ret = (t1->tv_sec - t2->tv_sec) * 1000000;
- ret += t1->tv_usec - t2->tv_usec;
- }
- return ret;
-}
-
-/*
- * With airtunes version 2, we don't get responses back when we send audio
- * data. The only requests we get from the airtunes device are timing
- * requests.
- */
-static bool
-send_audio_data(int fd, GError **error_r)
-{
- int i = 0;
- struct timeval current_time, rtp_time;
- struct raop_data *rd = raop_session->raop_list;
-
- get_time_for_rtp(&raop_session->play_state, &rtp_time);
- gettimeofday(&current_time, NULL);
- int diff = difference(&rtp_time, &current_time);
- if (diff > 0)
- g_usleep(diff);
-
- gettimeofday(&raop_session->play_state.last_send, NULL);
- while (rd) {
- if (rd->started) {
- raop_session->data[1] = 0x60;
- } else {
- rd->started = true;
- raop_session->data[1] = 0xe0;
- }
- i = sendto(fd, (const void *)(raop_session->data + raop_session->wblk_wsize),
- raop_session->wblk_remsize, 0, (struct sockaddr *) &rd->data_addr,
- sizeof(rd->data_addr));
- if (i < 0) {
- g_set_error(error_r, raop_output_quark(), errno,
- "write error: %s",
- g_strerror(errno));
- return false;
- }
- if (i == 0) {
- g_set_error_literal(error_r, raop_output_quark(), 0,
- "disconnected on the other end");
- return false;
- }
- rd = rd->next;
- }
- raop_session->wblk_wsize += i;
- raop_session->wblk_remsize -= i;
-
- return true;
-}
-
-static struct audio_output *
-raop_output_init(const struct config_param *param, GError **error_r)
-{
- const char *host = config_get_block_string(param, "host", NULL);
- if (host == NULL) {
- g_set_error_literal(error_r, raop_output_quark(), 0,
- "missing option 'host'");
- return NULL;
- }
-
- struct raop_data *rd;
-
- rd = new_raop_data(param, error_r);
- if (rd == NULL)
- return NULL;
-
- rd->addr = host;
- rd->rtsp_port = config_get_block_unsigned(param, "port", 5000);
- rd->volume = config_get_block_unsigned(param, "volume", 75);
- return &rd->base;
-}
-
-static bool
-raop_set_volume_local(struct raop_data *rd, int volume, GError **error_r)
-{
- char vol_str[128];
- sprintf(vol_str, "volume: %d.000000\r\n", volume);
- return rtspcl_set_parameter(rd->rtspcl, vol_str, error_r);
-}
-
-
-static void
-raop_output_finish(struct audio_output *ao)
-{
- struct raop_data *rd = (struct raop_data *)ao;
-
- if (rd->rtspcl)
- rtspcl_close(rd->rtspcl);
-
- g_mutex_free(rd->control_mutex);
- ao_base_finish(&rd->base);
- g_free(rd);
-
- if (raop_session->raop_list == NULL) {
- raop_session_free(raop_session);
- raop_session = NULL;
- }
-}
-
-#define RAOP_VOLUME_MIN -30
-#define RAOP_VOLUME_MAX 0
-
-int
-raop_get_volume(struct raop_data *rd)
-{
- return rd->volume;
-}
-
-bool
-raop_set_volume(struct raop_data *rd, unsigned volume, GError **error_r)
-{
- int raop_volume;
- bool rval;
-
- //set parameter volume
- if (volume == 0) {
- raop_volume = -144;
- } else {
- raop_volume = RAOP_VOLUME_MIN +
- (RAOP_VOLUME_MAX - RAOP_VOLUME_MIN) * volume / 100;
- }
- g_mutex_lock(rd->control_mutex);
- rval = raop_set_volume_local(rd, raop_volume, error_r);
- if (rval) rd->volume = volume;
- g_mutex_unlock(rd->control_mutex);
-
- return rval;
-}
-
-static void
-raop_output_cancel(struct audio_output *ao)
-{
- //flush
- struct key_data kd;
- struct raop_data *rd = (struct raop_data *)ao;
- int flush_diff = 1;
-
- rd->started = 0;
- if (rd->is_master) {
- raop_session->play_state.playing = false;
- }
- if (rd->paused) {
- return;
- }
-
- g_mutex_lock(rd->control_mutex);
- static char rtp_key[] = "RTP-Info";
- kd.key = rtp_key;
- char buf[128];
- sprintf(buf, "seq=%d; rtptime=%d", raop_session->play_state.seq_num + flush_diff, raop_session->play_state.rtptime + NUMSAMPLES * flush_diff);
- kd.data = buf;
- kd.next = NULL;
- exec_request(rd->rtspcl, "FLUSH", NULL, NULL, 1,
- &kd, NULL, NULL);
- g_mutex_unlock(rd->control_mutex);
-}
-
-static bool
-raop_output_pause(struct audio_output *ao)
-{
- struct raop_data *rd = (struct raop_data *)ao;
-
- rd->paused = true;
- return true;
-}
-
-/**
- * Remove the output from the session's list. Caller must not lock
- * the list_mutex.
- */
-static void
-raop_output_remove(struct raop_data *rd)
-{
- struct raop_data *iter = raop_session->raop_list;
- struct raop_data *prev = NULL;
-
- g_mutex_lock(raop_session->list_mutex);
- while (iter) {
- if (iter == rd) {
- if (prev != NULL) {
- prev->next = rd->next;
- } else {
- raop_session->raop_list = rd->next;
- }
- if (rd->is_master && raop_session->raop_list != NULL) {
- raop_session->raop_list->is_master = true;
- }
- rd->next = NULL;
- rd->is_master = false;
- break;
- }
- prev = iter;
- iter = iter->next;
- }
- g_mutex_unlock(raop_session->list_mutex);
-
- if (raop_session->raop_list == NULL) {
- ntp_server_close(&raop_session->ntp);
- close(raop_session->ctrl.fd);
- raop_session->ctrl.fd = -1;
- }
-}
-
-static void
-raop_output_close(struct audio_output *ao)
-{
- //teardown
- struct raop_data *rd = (struct raop_data *)ao;
-
- raop_output_remove(rd);
-
- g_mutex_lock(rd->control_mutex);
- exec_request(rd->rtspcl, "TEARDOWN", NULL, NULL, 0,
- NULL, NULL, NULL);
- g_mutex_unlock(rd->control_mutex);
-
- rd->started = 0;
-}
-
-
-static bool
-raop_output_open(struct audio_output *ao, struct audio_format *audio_format, GError **error_r)
-{
- //setup, etc.
- struct raop_data *rd = (struct raop_data *)ao;
-
- g_mutex_lock(raop_session->list_mutex);
- if (raop_session->raop_list == NULL) {
- // first raop, need to initialize session data
- unsigned short myport = 0;
- raop_session->raop_list = rd;
- rd->is_master = true;
-
- raop_session->data_fd = open_udp_socket(NULL, &myport,
- error_r);
- if (raop_session->data_fd < 0)
- return false;
-
- if (!ntp_server_open(&raop_session->ntp, error_r))
- return false;
-
- raop_session->ctrl.fd =
- open_udp_socket(NULL, &raop_session->ctrl.port,
- error_r);
- if (raop_session->ctrl.fd < 0) {
- ntp_server_close(&raop_session->ntp);
- raop_session->ctrl.fd = -1;
- g_mutex_unlock(raop_session->list_mutex);
- return false;
- }
- }
- g_mutex_unlock(raop_session->list_mutex);
-
- audio_format->format = SAMPLE_FORMAT_S16;
- if (!raopcl_connect(rd, error_r)) {
- raop_output_remove(rd);
- return false;
- }
-
- if (!raop_set_volume(rd, rd->volume, error_r)) {
- raop_output_remove(rd);
- return false;
- }
-
- g_mutex_lock(raop_session->list_mutex);
- if (!rd->is_master) {
- rd->next = raop_session->raop_list;
- raop_session->raop_list = rd;
- }
- g_mutex_unlock(raop_session->list_mutex);
- return true;
-}
-
-static size_t
-raop_output_play(struct audio_output *ao, const void *chunk, size_t size,
- GError **error_r)
-{
- //raopcl_send_sample
- struct raop_data *rd = (struct raop_data *)ao;
- size_t rval = 0, orig_size = size;
-
- rd->paused = false;
- if (!rd->is_master) {
- // only process data for the master raop
- return size;
- }
-
- g_mutex_lock(raop_session->data_mutex);
-
- if (raop_session->play_state.rtptime <= NUMSAMPLES) {
- // looped over, need new reference point to calculate correct times
- raop_session->play_state.playing = false;
- }
-
- while (raop_session->bufferSize + size >= RAOP_BUFFER_SIZE) {
- // ntp header
- unsigned char header[] = {
- 0x80, 0x60, 0x00, 0x00,
- // rtptime
- 0x00, 0x00, 0x00, 0x00,
- // device
- 0x7e, 0xad, 0xd2, 0xd3,
- };
-
-
- int count = 0;
- int copyBytes = RAOP_BUFFER_SIZE - raop_session->bufferSize;
-
- if (!raop_session->play_state.playing ||
- raop_session->play_state.seq_num % (44100 / NUMSAMPLES + 1) == 0) {
- struct raop_data *iter;
- g_mutex_lock(raop_session->list_mutex);
- if (!raop_session->play_state.playing) {
- gettimeofday(&raop_session->play_state.start_time,NULL);
- }
- iter = raop_session->raop_list;
- while (iter) {
- if (!send_control_command(&raop_session->ctrl, iter,
- &raop_session->play_state,
- error_r))
- goto erexit;
-
- iter = iter->next;
- }
- g_mutex_unlock(raop_session->list_mutex);
- }
-
- fill_int(header + 8, raop_session->play_state.sync_src);
-
- memcpy(raop_session->buffer + raop_session->bufferSize, chunk, copyBytes);
- raop_session->bufferSize += copyBytes;
- chunk = ((const char *)chunk) + copyBytes;
- size -= copyBytes;
-
- if (!wrap_pcm(raop_session->data + RAOP_HEADER_SIZE, NUMSAMPLES, &count, raop_session->buffer, RAOP_BUFFER_SIZE)) {
- g_warning("unable to encode %d bytes properly\n", RAOP_BUFFER_SIZE);
- }
-
- memcpy(raop_session->data, header, RAOP_HEADER_SIZE);
- raop_session->data[2] = raop_session->play_state.seq_num >> 8;
- raop_session->data[3] = raop_session->play_state.seq_num & 0xff;
- raop_session->play_state.seq_num ++;
-
- fill_int(raop_session->data + 4, raop_session->play_state.rtptime);
- raop_session->play_state.rtptime += NUMSAMPLES;
-
- raop_encrypt(&raop_session->encrypt, raop_session->data + RAOP_HEADER_SIZE, count);
- raop_session->wblk_remsize = count + RAOP_HEADER_SIZE;
- raop_session->wblk_wsize = 0;
-
- if (!send_audio_data(raop_session->data_fd, error_r))
- goto erexit;
-
- raop_session->bufferSize = 0;
- }
- if (size > 0) {
- memcpy(raop_session->buffer + raop_session->bufferSize, chunk, size);
- raop_session->bufferSize += size;
- }
- rval = orig_size;
- erexit:
- g_mutex_unlock(raop_session->data_mutex);
- return rval;
-}
-
-const struct audio_output_plugin raop_output_plugin = {
- .name = "raop",
- .init = raop_output_init,
- .finish = raop_output_finish,
- .open = raop_output_open,
- .play = raop_output_play,
- .cancel = raop_output_cancel,
- .pause = raop_output_pause,
- .close = raop_output_close,
- .mixer_plugin = &raop_mixer_plugin,
-};