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mpv/libmpdemux/demux_xmms.c

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/*
* Copyright (C) 2002-2004 Balatoni Denes and A'rpi
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; 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:
#ifdef 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(void){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(void){ 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(void) {
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(void) {
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
};
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