/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (shank@mercury.chem.pitt.edu)
* This project's homepage is: http://www.musicpd.org
*
* Media MVP audio output based on code from MVPMC project:
* http://mvpmc.sourceforge.net/
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "../audioOutput.h"
#include <stdlib.h>
#ifdef HAVE_MVP
#include "../conf.h"
#include "../log.h"
#include "../sig_handlers.h"
#include <string.h>
#include <assert.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
typedef struct {
unsigned long dsp_status;
unsigned long stream_decode_type;
unsigned long sample_rate;
unsigned long bit_rate;
unsigned long raw[64/sizeof(unsigned long)];
} aud_status_t;
#define MVP_SET_AUD_STOP _IOW('a',1,int)
#define MVP_SET_AUD_PLAY _IOW('a',2,int)
#define MVP_SET_AUD_PAUSE _IOW('a',3,int)
#define MVP_SET_AUD_UNPAUSE _IOW('a',4,int)
#define MVP_SET_AUD_SRC _IOW('a',5,int)
#define MVP_SET_AUD_MUTE _IOW('a',6,int)
#define MVP_SET_AUD_BYPASS _IOW('a',8,int)
#define MVP_SET_AUD_CHANNEL _IOW('a',9,int)
#define MVP_GET_AUD_STATUS _IOR('a',10,aud_status_t)
#define MVP_SET_AUD_VOLUME _IOW('a',13,int)
#define MVP_GET_AUD_VOLUME _IOR('a',14,int)
#define MVP_SET_AUD_STREAMTYPE _IOW('a',15,int)
#define MVP_SET_AUD_FORMAT _IOW('a',16,int)
#define MVP_GET_AUD_SYNC _IOR('a',21,pts_sync_data_t*)
#define MVP_SET_AUD_STC _IOW('a',22,long long int *)
#define MVP_SET_AUD_SYNC _IOW('a',23,int)
#define MVP_SET_AUD_END_STREAM _IOW('a',25,int)
#define MVP_SET_AUD_RESET _IOW('a',26,int)
#define MVP_SET_AUD_DAC_CLK _IOW('a',27,int)
#define MVP_GET_AUD_REGS _IOW('a',28,aud_ctl_regs_t*)
typedef struct _MvpData {
int fd;
} MvpData;
static int pcmfrequencies[][3] = {
{9 ,8000 ,32000},
{10,11025,44100},
{11,12000,48000},
{1 ,16000,32000},
{2 ,22050,44100},
{3 ,24000,48000},
{5 ,32000,32000},
{0 ,44100,44100},
{7 ,48000,48000},
{13,64000,32000},
{14,88200,44100},
{15,96000,48000}};
static int numfrequencies = sizeof(pcmfrequencies)/12;
static int mvp_testDefault() {
int fd;
fd = open("/dev/adec_pcm", O_WRONLY);
if(fd) {
close(fd);
return 0;
}
WARNING("Error opening PCM device \"/dev/adec_pcm\": %s\n",
strerror(errno));
return -1;
}
static int mvp_initDriver(AudioOutput * audioOutput, ConfigParam * param) {
MvpData * md = malloc(sizeof(MvpData));
md->fd = -1;
audioOutput->data = md;
return 0;
}
static void mvp_finishDriver(AudioOutput * audioOutput) {
MvpData *md = audioOutput->data;
free(md);
}
static int mvp_setPcmParams(MvpData *md, unsigned long rate, int channels, int big_endian, int bits){
int iloop;
int mix[5];
if (channels == 1)
mix[0] = 1;
else if (channels == 2)
mix[0] = 0;
else
return -1;
/* 0,1=24bit(24) , 2,3=16bit */
if (bits == 16)
mix[1] = 2;
else if (bits == 24)
mix[1] = 0;
else
return -1;
mix[3] = 0; /* stream type? */
if (big_endian == 1)
mix[4] = 1;
else if (big_endian == 0)
mix[4] = 0;
else
return -1;
/*
* if there is an exact match for the frequency, use it.
*/
for(iloop = 0;iloop<numfrequencies;iloop++)
{
if(rate == pcmfrequencies[iloop][1])
{
mix[2] = pcmfrequencies[iloop][0];
break;
}
}
if (iloop >= numfrequencies) {
ERROR("Can not find suitable output frequency for %ld\n",
rate);
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0){
ERROR("Can not set audio format\n");
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0){
ERROR("Can not set audio sync\n");
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0){
ERROR("Can not set audio play mode\n");
return -1;
}
return 0;
}
static int mvp_openDevice(AudioOutput * audioOutput)
{
int ret = -1;
long long int stc = 0;
MvpData * md = audioOutput->data;
AudioFormat * audioFormat = &audioOutput->outAudioFormat;
int mix[5] = { 0, 2, 7, 1, 0 };
if ((md->fd=open("/dev/adec_pcm",
O_RDWR|O_NONBLOCK)) < 0){
ERROR("Error opening /dev/adec_pcm: %s\n", strerror(errno));
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0){
ERROR("Error setting audio source: %s\n", strerror(errno));
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0){
ERROR("Error setting audio streamtype: %s\n", strerror(errno));
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0){
ERROR("Error setting audio format: %s\n", strerror(errno));
return -1;
}
ioctl(md->fd, MVP_SET_AUD_STC, &stc);
if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0){
ERROR("Error setting audio streamtype: %s\n", strerror(errno));
return -1;
}
#ifdef WORDS_BIGENDIAN
mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 0, audioFormat->bits);
#else
mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 1, audioFormat->bits);
#endif
audioOutput->open = 1;
return 0;
}
static void mvp_closeDevice(AudioOutput * audioOutput) {
MvpData * md = audioOutput->data;
if(md->fd >= 0) close(md->fd);
md->fd = -1;
audioOutput->open = 0;
}
static void mvp_dropBufferedAudio(AudioOutput * audioOutput) {
MvpData * md = audioOutput->data;
if(md->fd >=0){
ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
close(md->fd);
md->fd = -1;
audioOutput->open = 0;
}
}
static int mvp_playAudio(AudioOutput * audioOutput, char * playChunk,
int size)
{
MvpData * md = audioOutput->data;
int ret;
/* reopen the device since it was closed by dropBufferedAudio */
if(md->fd < 0) mvp_openDevice(audioOutput);
while (size > 0) {
ret = write(md->fd, playChunk, size);
if(ret<0) {
if(errno == EINTR) continue;
ERROR("closing mvp PCM device due to write error: "
"%s\n", strerror(errno));
mvp_closeDevice(audioOutput);
return -1;
}
playChunk += ret;
size -= ret;
}
return 0;
}
AudioOutputPlugin mvpPlugin =
{
"mvp",
mvp_testDefault,
mvp_initDriver,
mvp_finishDriver,
mvp_openDevice,
mvp_playAudio,
mvp_dropBufferedAudio,
mvp_closeDevice,
NULL /* sendMetadataFunc */
};
#else /* HAVE_MVP */
AudioOutputPlugin mvpPlugin =
{
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL /* sendMetadataFunc */
};
#endif /* HAVE_MVP */
