/* 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 "../output_api.h"
#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "mvp"
#if G_BYTE_ORDER == G_BIG_ENDIAN
#define MVP_USE_LITTLE_ENDIAN false
#else
#define MVP_USE_LITTLE_ENDIAN true
#endif
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 {
struct audio_output *audio_output;
struct audio_format audio_format;
int fd;
} MvpData;
static unsigned 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 const unsigned numfrequencies =
sizeof(pcmfrequencies) / sizeof(pcmfrequencies[0]);
static bool mvp_testDefault(void)
{
int fd;
fd = open("/dev/adec_pcm", O_WRONLY);
if (fd) {
close(fd);
return true;
}
g_warning("Error opening PCM device \"/dev/adec_pcm\": %s\n",
strerror(errno));
return false;
}
static void *mvp_initDriver(G_GNUC_UNUSED struct audio_output *audio_output,
G_GNUC_UNUSED const struct audio_format *audio_format,
G_GNUC_UNUSED const struct config_param *param)
{
MvpData *md = g_new(MvpData, 1);
md->audio_output = audio_output;
md->fd = -1;
return md;
}
static void mvp_finishDriver(void *data)
{
MvpData *md = data;
free(md);
}
static int mvp_setPcmParams(MvpData * md, unsigned long rate, int channels,
int big_endian, unsigned bits)
{
unsigned iloop;
unsigned 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) {
g_warning("Can not find suitable output frequency for %ld\n",
rate);
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
g_warning("Can not set audio format\n");
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0) {
g_warning("Can not set audio sync\n");
return -1;
}
if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0) {
g_warning("Can not set audio play mode\n");
return -1;
}
return 0;
}
static bool
mvp_openDevice(void *data, struct audio_format *audioFormat)
{
MvpData *md = data;
long long int stc = 0;
int mix[5] = { 0, 2, 7, 1, 0 };
if ((md->fd = open("/dev/adec_pcm", O_RDWR | O_NONBLOCK)) < 0) {
g_warning("Error opening /dev/adec_pcm: %s\n",
strerror(errno));
return false;
}
if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0) {
g_warning("Error setting audio source: %s\n",
strerror(errno));
return false;
}
if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0) {
g_warning("Error setting audio streamtype: %s\n",
strerror(errno));
return false;
}
if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
g_warning("Error setting audio format: %s\n",
strerror(errno));
return false;
}
ioctl(md->fd, MVP_SET_AUD_STC, &stc);
if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0) {
g_warning("Error setting audio streamtype: %s\n",
strerror(errno));
return false;
}
mvp_setPcmParams(md, audioFormat->sample_rate, audioFormat->channels,
MVP_USE_LITTLE_ENDIAN, audioFormat->bits);
md->audio_format = *audioFormat;
return true;
}
static void mvp_closeDevice(void *data)
{
MvpData *md = data;
if (md->fd >= 0)
close(md->fd);
md->fd = -1;
}
static void mvp_dropBufferedAudio(void *data)
{
MvpData *md = data;
if (md->fd >= 0) {
ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
close(md->fd);
md->fd = -1;
audio_output_closed(md->audio_output);
}
}
static bool
mvp_playAudio(void *data, const char *playChunk, size_t size)
{
MvpData *md = data;
ssize_t ret;
/* reopen the device since it was closed by dropBufferedAudio */
if (md->fd < 0)
mvp_openDevice(md, &md->audio_format);
while (size > 0) {
ret = write(md->fd, playChunk, size);
if (ret < 0) {
if (errno == EINTR)
continue;
g_warning("closing mvp PCM device due to write error: "
"%s\n", strerror(errno));
return false;
}
playChunk += ret;
size -= ret;
}
return true;
}
const struct audio_output_plugin mvpPlugin = {
.name = "mvp",
.test_default_device = mvp_testDefault,
.init = mvp_initDriver,
.finish = mvp_finishDriver,
.open = mvp_openDevice,
.play = mvp_playAudio,
.cancel = mvp_dropBufferedAudio,
.close = mvp_closeDevice,
};
