/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* 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 "../os_compat.h"
#ifdef HAVE_MVP
#include "../conf.h"
#include "../log.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(void)
{
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 = xmalloc(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)
{
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,
const char *playChunk, size_t size)
{
MvpData *md = audioOutput->data;
ssize_t 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 */
DISABLED_AUDIO_OUTPUT_PLUGIN(mvpPlugin)
#endif /* HAVE_MVP */
