aboutsummaryrefslogtreecommitdiffhomepage
path: root/libmpdemux/demux_xmms.c
blob: e156a96bc5c15de3f408b72a1e223e9b07c33d69 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
/*
 * Copyright (C) 2002-2004 Balatoni Denes and A'rpi
 *
 * 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
 *
 */

// This is not reentrant because of global static variables, but most of
// the plugins are not reentrant either perhaps
#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <pthread.h>
#include <dlfcn.h>
#include <dirent.h>
#include <inttypes.h>
#include <string.h>
#include <sys/stat.h>

#include "m_option.h"
#include "libaf/af_format.h"
#include "stream/stream.h"
#include "demuxer.h"
#include "stheader.h"

#include "mp_msg.h"
#include "help_mp.h"

#define XMMS_PACKETSIZE 65536  // some plugins won't play if this is too small

#include "demux_xmms_plugin.h"

typedef struct {
    uint64_t spos;   // stream position in number of output bytes from 00:00:00
    InputPlugin* ip;
}  xmms_priv_t;

static pthread_mutex_t xmms_mutex;
static int format = 0x1; // Raw PCM
static char xmms_audiobuffer[XMMS_PACKETSIZE];
static uint32_t xmms_channels;
static uint32_t xmms_samplerate;
static uint32_t xmms_afmt;
static int xmms_length;
static char *xmms_title=NULL;
static uint32_t xmms_audiopos=0;
static int xmms_playing=0;
static xmms_priv_t *xmms_priv=NULL;
static uint32_t xmms_byterate;
static int64_t xmms_flushto=-1;

// =========== mplayer xmms outputplugin stuff  ==============

static void disk_close(void) {}
static void disk_pause(short p) {}
static void disk_init(void) {}

static void disk_flush(int time) {
    if (xmms_priv) xmms_flushto=time*((long long) xmms_byterate)/1000LL;
}

static int disk_free(void) { // vqf plugin sends more than it should
    return (XMMS_PACKETSIZE-xmms_audiopos<XMMS_PACKETSIZE/4 ?
                            0:XMMS_PACKETSIZE-xmms_audiopos-XMMS_PACKETSIZE/4);
}

static int disk_playing(void) {
    return 0; //?? maybe plugins wait on exit until oplugin is not playing?
}

static int disk_get_output_time(void) {
    if (xmms_byterate)
        return xmms_priv->spos*1000LL/((long long)xmms_byterate);
    else return 0;
}

static int disk_open(AFormat fmt, int rate, int nch) {
    switch (fmt) {
        case FMT_U8:
            xmms_afmt=AF_FORMAT_U8;
            break;
        case FMT_S8:
            xmms_afmt=AF_FORMAT_S8;
            break;
        case FMT_U16_LE:
            xmms_afmt=AF_FORMAT_U16_LE;
            break;
        case FMT_U16_NE:
#if WORDS_BIGENDIAN
            xmms_afmt=AF_FORMAT_U16_BE;
#else
            xmms_afmt=AF_FORMAT_U16_LE;
#endif
            break;
        case FMT_U16_BE:
            xmms_afmt=AF_FORMAT_U16_BE;
            break;
        case FMT_S16_NE:
            xmms_afmt=AF_FORMAT_S16_NE;
            break;
        case FMT_S16_LE:
            xmms_afmt=AF_FORMAT_S16_LE;
            break;
        case FMT_S16_BE:
            xmms_afmt=AF_FORMAT_S16_BE;
            break;
    }
    xmms_samplerate=rate;
    xmms_channels=nch;
    return 1;
}

static void disk_write(void *ptr, int length) {
    if (!xmms_playing) return;
    pthread_mutex_lock(&xmms_mutex);
    if (xmms_flushto!=-1) {
        xmms_priv->spos=xmms_flushto;
        xmms_flushto=-1;
        xmms_audiopos=0;
    }
    xmms_priv->spos+= length;
    memcpy(&xmms_audiobuffer[xmms_audiopos],ptr,length);
    xmms_audiopos+=length;
    pthread_mutex_unlock(&xmms_mutex);
}

static OutputPlugin xmms_output_plugin =
{
    NULL,
    NULL,
    "MPlayer output interface plugin ", /* Description */
    disk_init,
    NULL,                   /* about */
    NULL,                   /* configure */
    NULL,                   /* get_volume */
    NULL,                   /* set_volume */
    disk_open,
    disk_write,
    disk_close,
    disk_flush,
    disk_pause,
    disk_free,
    disk_playing,
    disk_get_output_time,
    disk_get_output_time //we pretend that everything written is played at once
};

// ==================== mplayer xmms inputplugin helper stuff =================

static InputPlugin* input_plugins[100];
static int no_plugins=0;

/* Dummy functions  */
static InputVisType input_get_vis_type(){return 0;}
static void input_add_vis_pcm(int time, AFormat fmt, int nch, int length,
                                                                void *ptr){}
static void input_set_info_text(char * text){}
char *xmms_get_gentitle_format(){ return ""; }
/* Dummy functions  END*/

static void input_set_info(char* title,int length, int rate, int freq, int nch)
{
    xmms_length=length;
}

static void init_plugins_from_dir(const char *plugin_dir){
    DIR *dir;
    struct dirent *ent;

    dir = opendir(plugin_dir);
    if (!dir) return;

    while ((ent = readdir(dir)) != NULL){
        char filename[strlen(plugin_dir)+strlen(ent->d_name)+4];
        void* handle;
        sprintf(filename, "%s/%s", plugin_dir, ent->d_name);
        handle=dlopen(filename, RTLD_NOW);
        if(handle){
            void *(*gpi) (void);
            gpi=dlsym(handle, "get_iplugin_info");
            if(gpi){
                InputPlugin *p=gpi();
                mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_MPDEMUX_XMMS_FoundPlugin,
                                                ent->d_name,p->description);
                p->handle = handle;
                p->filename = strdup(filename);
                p->get_vis_type = input_get_vis_type;
                p->add_vis_pcm = input_add_vis_pcm;
                p->set_info = input_set_info;
                p->set_info_text = input_set_info_text;
                if(p->init) p->init();
                input_plugins[no_plugins++]=p;
            } else
                dlclose(handle);
        }
    }
    closedir(dir);
}

static void init_plugins(){
    char *home;

    no_plugins=0;

    home = getenv("HOME");
    if(home != NULL) {
        char xmms_home[strlen(home) + 15];
        sprintf(xmms_home, "%s/.xmms/Plugins", home);
        init_plugins_from_dir(xmms_home);
    }

    init_plugins_from_dir(XMMS_INPUT_PLUGIN_DIR);
}

static void cleanup_plugins(){
    while(no_plugins>0){
        --no_plugins;
        mp_msg(MSGT_DEMUX, MSGL_INFO, MSGTR_MPDEMUX_XMMS_ClosingPlugin,
                                        input_plugins[no_plugins]->filename);
        if(input_plugins[no_plugins]->cleanup)
            input_plugins[no_plugins]->cleanup();
        dlclose(input_plugins[no_plugins]->handle);
    }
}

// ============================ mplayer demuxer stuff ===============

static int demux_xmms_open(demuxer_t* demuxer) {
    InputPlugin* ip = NULL;
    sh_audio_t* sh_audio;
    WAVEFORMATEX* w;
    xmms_priv_t *priv;
    int i;

    if (xmms_priv) return 0; // as I said, it's not reentrant :)
    init_plugins();
    for(i=0;i<no_plugins;i++){
        if (input_plugins[i]->is_our_file(demuxer->stream->url)){
            ip=input_plugins[i]; break;
        }
    }
    if(!ip) return 0; // no plugin to handle this...

    pthread_mutex_init(&xmms_mutex,NULL);

    xmms_priv=priv=malloc(sizeof(xmms_priv_t));
    memset(priv,0,sizeof(xmms_priv_t));
    priv->ip=ip;

    memset(xmms_audiobuffer,0,XMMS_PACKETSIZE);

    xmms_channels=0;
    sh_audio = new_sh_audio(demuxer,0);
    sh_audio->wf = w = malloc(sizeof(WAVEFORMATEX));
    w->wFormatTag = sh_audio->format = format;

    demuxer->movi_start = 0;
    demuxer->movi_end = 100;
    demuxer->audio->id = 0;
    demuxer->audio->sh = sh_audio;
    demuxer->priv=priv;
    sh_audio->ds = demuxer->audio;

    xmms_output_plugin.init();
    ip->output = &xmms_output_plugin;
    xmms_playing=1;
    ip->play_file(demuxer->stream->url);
    if (ip->get_song_info)
        ip->get_song_info(demuxer->stream->url,&xmms_title,&xmms_length);
    if (xmms_length<=0) demuxer->seekable=0;

    mp_msg(MSGT_DEMUX,MSGL_INFO,MSGTR_MPDEMUX_XMMS_WaitForStart,
                                                        demuxer->stream->url);
    while (xmms_channels==0) {
        usleep(10000);
        if(ip->get_time()<0) return 0;
    }
    sh_audio->sample_format= xmms_afmt;
    switch (xmms_afmt) {
        case AF_FORMAT_S16_LE:
        case AF_FORMAT_S16_BE:
        case AF_FORMAT_U16_LE:
        case AF_FORMAT_U16_BE:
            sh_audio->samplesize = 2;
            break;
        default:
            sh_audio->samplesize = 1;
    }
    w->wBitsPerSample = sh_audio->samplesize*8;
    w->nChannels = sh_audio->channels = xmms_channels;
    w->nSamplesPerSec = sh_audio->samplerate = xmms_samplerate;
    xmms_byterate = w->nAvgBytesPerSec =
                    xmms_samplerate*sh_audio->channels*sh_audio->samplesize;
    w->nBlockAlign = sh_audio->samplesize*sh_audio->channels;
    w->cbSize = 0;

    return DEMUXER_TYPE_XMMS;
}

static int demux_xmms_fill_buffer(demuxer_t* demuxer, demux_stream_t *ds) {
    sh_audio_t *sh_audio = demuxer->audio->sh;
    xmms_priv_t *priv=demuxer->priv;
    demux_packet_t*  dp;

    if (xmms_length<=0) demuxer->seekable=0;
    else demuxer->seekable=1;

    while (xmms_audiopos<XMMS_PACKETSIZE/2) {
        if((priv->ip->get_time()<0) || !xmms_playing)
            return 0;
        usleep(1000);
    }

    pthread_mutex_lock(&xmms_mutex);
    dp = new_demux_packet(XMMS_PACKETSIZE/2);
    dp->pts = priv->spos / sh_audio->wf->nAvgBytesPerSec;
    ds->pos = priv->spos;

    memcpy(dp->buffer,xmms_audiobuffer,XMMS_PACKETSIZE/2);
    memcpy(xmms_audiobuffer,&xmms_audiobuffer[XMMS_PACKETSIZE/2],
                                            xmms_audiopos-XMMS_PACKETSIZE/2);
    xmms_audiopos-=XMMS_PACKETSIZE/2;
    pthread_mutex_unlock(&xmms_mutex);

    ds_add_packet(ds,dp);

    return 1;
}

static void demux_xmms_seek(demuxer_t *demuxer,float rel_seek_secs,
                                               float audio_delay,int flags){
    stream_t* s = demuxer->stream;
    sh_audio_t* sh_audio = demuxer->audio->sh;
    xmms_priv_t *priv=demuxer->priv;
    int32_t pos;

    if(priv->ip->get_time()<0) return;

    pos = (flags & SEEK_ABSOLUTE) ? 0 : priv->spos / sh_audio->wf->nAvgBytesPerSec;
    if (flags & SEEK_FACTOR)
        pos+= rel_seek_secs*xmms_length;
    else
        pos+= rel_seek_secs;

    if (pos<0) pos=0;
    if (pos>=xmms_length) pos=xmms_length-1;

    priv->ip->seek((pos<0)?0:pos);
    priv->spos=pos * sh_audio->wf->nAvgBytesPerSec;
}

static void demux_close_xmms(demuxer_t* demuxer) {
    xmms_priv_t *priv=demuxer->priv;
    xmms_playing=0;
    xmms_audiopos=0; // xmp on exit waits until buffer is free enough
    if (priv != NULL) {
        if (priv->ip != NULL)
            priv->ip->stop();
        free(priv); xmms_priv=demuxer->priv=NULL;
    }
    cleanup_plugins();
}

static int demux_xmms_control(demuxer_t *demuxer,int cmd, void *arg){
    demux_stream_t *d_video=demuxer->video;
    sh_audio_t *sh_audio=demuxer->audio->sh;
    xmms_priv_t *priv=demuxer->priv;

    switch(cmd) {
        case DEMUXER_CTRL_GET_TIME_LENGTH:
            if (xmms_length<=0) return DEMUXER_CTRL_DONTKNOW;
            *((double *)arg)=(double)xmms_length/1000;
            return DEMUXER_CTRL_GUESS;

        case DEMUXER_CTRL_GET_PERCENT_POS:
            if (xmms_length<=0)
                return DEMUXER_CTRL_DONTKNOW;
            *((int *)arg)=(int)( priv->spos /
                        (float)(sh_audio->wf->nAvgBytesPerSec) / xmms_length );
            return DEMUXER_CTRL_OK;

        default:
            return DEMUXER_CTRL_NOTIMPL;
    }
}


const demuxer_desc_t demuxer_desc_xmms = {
    "XMMS demuxer",
    "xmms",
    "XMMS",
    "Balatoni Denes, A'rpi",
    "requires XMMS plugins",
    DEMUXER_TYPE_XMMS,
    0, // safe autodetect
    demux_xmms_open,
    demux_xmms_fill_buffer,
    NULL,
    demux_close_xmms,
    demux_xmms_seek,
    demux_xmms_control
};