src/audioOutputs/audioOutput_mvp.c

   1 /* the Music Player Daemon (MPD)
   2  * Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
   3  * This project's homepage is: http://www.musicpd.org
   4  *
   5  * Media MVP audio output based on code from MVPMC project:
   6  * http://mvpmc.sourceforge.net/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "../audioOutput.h"
  23
  24 #include <stdlib.h>
  25
  26 #ifdef HAVE_MVP
  27
  28 #include "../conf.h"
  29 #include "../log.h"
  30
  31 #include <string.h>
  32
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #include <sys/ioctl.h>
  36 #include <fcntl.h>
  37 #include <unistd.h>
  38 #include <errno.h>
  39
  40 typedef struct {
  41         unsigned long dsp_status;
  42         unsigned long stream_decode_type;
  43         unsigned long sample_rate;
  44         unsigned long bit_rate;
  45         unsigned long raw[64 / sizeof(unsigned long)];
  46 } aud_status_t;
  47
  48 #define MVP_SET_AUD_STOP                _IOW('a',1,int)
  49 #define MVP_SET_AUD_PLAY                _IOW('a',2,int)
  50 #define MVP_SET_AUD_PAUSE       _IOW('a',3,int)
  51 #define MVP_SET_AUD_UNPAUSE     _IOW('a',4,int)
  52 #define MVP_SET_AUD_SRC         _IOW('a',5,int)
  53 #define MVP_SET_AUD_MUTE                _IOW('a',6,int)
  54 #define MVP_SET_AUD_BYPASS      _IOW('a',8,int)
  55 #define MVP_SET_AUD_CHANNEL     _IOW('a',9,int)
  56 #define MVP_GET_AUD_STATUS      _IOR('a',10,aud_status_t)
  57 #define MVP_SET_AUD_VOLUME      _IOW('a',13,int)
  58 #define MVP_GET_AUD_VOLUME      _IOR('a',14,int)
  59 #define MVP_SET_AUD_STREAMTYPE  _IOW('a',15,int)
  60 #define MVP_SET_AUD_FORMAT      _IOW('a',16,int)
  61 #define MVP_GET_AUD_SYNC                _IOR('a',21,pts_sync_data_t*)
  62 #define MVP_SET_AUD_STC         _IOW('a',22,long long int *)
  63 #define MVP_SET_AUD_SYNC                _IOW('a',23,int)
  64 #define MVP_SET_AUD_END_STREAM  _IOW('a',25,int)
  65 #define MVP_SET_AUD_RESET       _IOW('a',26,int)
  66 #define MVP_SET_AUD_DAC_CLK     _IOW('a',27,int)
  67 #define MVP_GET_AUD_REGS                _IOW('a',28,aud_ctl_regs_t*)
  68
  69 typedef struct _MvpData {
  70         int fd;
  71 } MvpData;
  72
  73 static int pcmfrequencies[][3] = {
  74         {9, 8000, 32000},
  75         {10, 11025, 44100},
  76         {11, 12000, 48000},
  77         {1, 16000, 32000},
  78         {2, 22050, 44100},
  79         {3, 24000, 48000},
  80         {5, 32000, 32000},
  81         {0, 44100, 44100},
  82         {7, 48000, 48000},
  83         {13, 64000, 32000},
  84         {14, 88200, 44100},
  85         {15, 96000, 48000}
  86 };
  87
  88 static int numfrequencies = sizeof(pcmfrequencies) / 12;
  89
  90 static int mvp_testDefault(void)
  91 {
  92         int fd;
  93
  94         fd = open("/dev/adec_pcm", O_WRONLY);
  95
  96         if (fd) {
  97                 close(fd);
  98                 return 0;
  99         }
 100
 101         WARNING("Error opening PCM device \"/dev/adec_pcm\": %s\n",
 102                 strerror(errno));
 103
 104         return -1;
 105 }
 106
 107 static int mvp_initDriver(AudioOutput * audioOutput, ConfigParam * param)
 108 {
 109         MvpData *md = xmalloc(sizeof(MvpData));
 110         md->fd = -1;
 111         audioOutput->data = md;
 112
 113         return 0;
 114 }
 115
 116 static void mvp_finishDriver(AudioOutput * audioOutput)
 117 {
 118         MvpData *md = audioOutput->data;
 119         free(md);
 120 }
 121
 122 static int mvp_setPcmParams(MvpData * md, unsigned long rate, int channels,
 123                             int big_endian, int bits)
 124 {
 125         int iloop;
 126         int mix[5];
 127
 128         if (channels == 1)
 129                 mix[0] = 1;
 130         else if (channels == 2)
 131                 mix[0] = 0;
 132         else
 133                 return -1;
 134
 135         /* 0,1=24bit(24) , 2,3=16bit */
 136         if (bits == 16)
 137                 mix[1] = 2;
 138         else if (bits == 24)
 139                 mix[1] = 0;
 140         else
 141                 return -1;
 142
 143         mix[3] = 0;     /* stream type? */
 144
 145         if (big_endian == 1)
 146                 mix[4] = 1;
 147         else if (big_endian == 0)
 148                 mix[4] = 0;
 149         else
 150                 return -1;
 151
 152         /*
 153          * if there is an exact match for the frequency, use it.
 154          */
 155         for (iloop = 0; iloop < numfrequencies; iloop++) {
 156                 if (rate == pcmfrequencies[iloop][1]) {
 157                         mix[2] = pcmfrequencies[iloop][0];
 158                         break;
 159                 }
 160         }
 161
 162         if (iloop >= numfrequencies) {
 163                 ERROR("Can not find suitable output frequency for %ld\n", rate);
 164                 return -1;
 165         }
 166
 167         if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
 168                 ERROR("Can not set audio format\n");
 169                 return -1;
 170         }
 171
 172         if (ioctl(md->fd, MVP_SET_AUD_SYNC, 2) != 0) {
 173                 ERROR("Can not set audio sync\n");
 174                 return -1;
 175         }
 176
 177         if (ioctl(md->fd, MVP_SET_AUD_PLAY, 0) < 0) {
 178                 ERROR("Can not set audio play mode\n");
 179                 return -1;
 180         }
 181
 182         return 0;
 183 }
 184
 185 static int mvp_openDevice(AudioOutput * audioOutput)
 186 {
 187         long long int stc = 0;
 188         MvpData *md = audioOutput->data;
 189         AudioFormat *audioFormat = &audioOutput->outAudioFormat;
 190         int mix[5] = { 0, 2, 7, 1, 0 };
 191
 192         if ((md->fd = open("/dev/adec_pcm", O_RDWR | O_NONBLOCK)) < 0) {
 193                 ERROR("Error opening /dev/adec_pcm: %s\n", strerror(errno));
 194                 return -1;
 195         }
 196         if (ioctl(md->fd, MVP_SET_AUD_SRC, 1) < 0) {
 197                 ERROR("Error setting audio source: %s\n", strerror(errno));
 198                 return -1;
 199         }
 200         if (ioctl(md->fd, MVP_SET_AUD_STREAMTYPE, 0) < 0) {
 201                 ERROR("Error setting audio streamtype: %s\n", strerror(errno));
 202                 return -1;
 203         }
 204         if (ioctl(md->fd, MVP_SET_AUD_FORMAT, &mix) < 0) {
 205                 ERROR("Error setting audio format: %s\n", strerror(errno));
 206                 return -1;
 207         }
 208         ioctl(md->fd, MVP_SET_AUD_STC, &stc);
 209         if (ioctl(md->fd, MVP_SET_AUD_BYPASS, 1) < 0) {
 210                 ERROR("Error setting audio streamtype: %s\n", strerror(errno));
 211                 return -1;
 212         }
 213 #ifdef WORDS_BIGENDIAN
 214         mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 0,
 215                          audioFormat->bits);
 216 #else
 217         mvp_setPcmParams(md, audioFormat->sampleRate, audioFormat->channels, 1,
 218                          audioFormat->bits);
 219 #endif
 220         audioOutput->open = 1;
 221         return 0;
 222 }
 223
 224 static void mvp_closeDevice(AudioOutput * audioOutput)
 225 {
 226         MvpData *md = audioOutput->data;
 227         if (md->fd >= 0)
 228                 close(md->fd);
 229         md->fd = -1;
 230         audioOutput->open = 0;
 231 }
 232
 233 static void mvp_dropBufferedAudio(AudioOutput * audioOutput)
 234 {
 235         MvpData *md = audioOutput->data;
 236         if (md->fd >= 0) {
 237                 ioctl(md->fd, MVP_SET_AUD_RESET, 0x11);
 238                 close(md->fd);
 239                 md->fd = -1;
 240                 audioOutput->open = 0;
 241         }
 242 }
 243
 244 static int mvp_playAudio(AudioOutput * audioOutput, char *playChunk, int size)
 245 {
 246         MvpData *md = audioOutput->data;
 247         int ret;
 248
 249         /* reopen the device since it was closed by dropBufferedAudio */
 250         if (md->fd < 0)
 251                 mvp_openDevice(audioOutput);
 252
 253         while (size > 0) {
 254                 ret = write(md->fd, playChunk, size);
 255                 if (ret < 0) {
 256                         if (errno == EINTR)
 257                                 continue;
 258                         ERROR("closing mvp PCM device due to write error: "
 259                               "%s\n", strerror(errno));
 260                         mvp_closeDevice(audioOutput);
 261                         return -1;
 262                 }
 263                 playChunk += ret;
 264                 size -= ret;
 265         }
 266         return 0;
 267 }
 268
 269 AudioOutputPlugin mvpPlugin = {
 270         "mvp",
 271         mvp_testDefault,
 272         mvp_initDriver,
 273         mvp_finishDriver,
 274         mvp_openDevice,
 275         mvp_playAudio,
 276         mvp_dropBufferedAudio,
 277         mvp_closeDevice,
 278         NULL,   /* sendMetadataFunc */
 279 };
 280
 281 #else /* HAVE_MVP */
 282
 283 DISABLED_AUDIO_OUTPUT_PLUGIN(mvpPlugin)
 284 #endif /* HAVE_MVP */